JP7617866B2 - Information processing method, information processing device, and information processing system - Google Patents

Description

The present invention relates to an information processing method, an information processing device, and an information processing system.

As hybrid electric vehicles (HEVs) and electric vehicles (EVs) become more common, it is becoming increasingly important to diagnose the deterioration of the secondary batteries (also simply called "batteries") installed in these vehicles.

Patent document 1 discloses a battery degradation determination device that is installed in an automobile that has a battery and can be driven by a motor, and that determines battery degradation when the battery temperature is within a predetermined temperature threshold range and the remaining capacity of the battery is within a predetermined capacity threshold range.

JP 2019-152551 A

The device in Patent Document 1 determines battery degradation while installed in a vehicle, and can only diagnose the degradation of the specific battery installed in the vehicle. In EVs, the battery capacity generally decreases over time, shortening the driving range, so each vehicle manufacturer sets a warranty period and value for the battery capacity. However, no suitable high-speed diagnostic method has been established for many types of batteries. Moreover, even batteries that have passed the warranty period or fallen below the guaranteed value are not being fully utilized in situations where the driving range is short or when the battery is used in a stationary position, despite their market value.

The present invention was made in consideration of these circumstances, and aims to provide an information processing method, information processing device, and information processing system that can increase the utility value of batteries.

The present application includes multiple means for solving the above problems, but as one example, an information processing method obtains battery-related information about an in-vehicle battery from a battery DB, uses a diagnostic method for diagnosing the degree of deterioration of the battery according to the obtained battery-related information, records the diagnosed degree of deterioration of the battery in the diagnostic DB, and presents the trading price of the battery whose degree of deterioration has been diagnosed using a calculation method that defines the relationship between the degree of deterioration of the battery and the trading price.

The present invention can increase the utility value of batteries.

1 is a schematic diagram illustrating an example of a configuration of an information processing system according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing an example of the configuration of a ledger management node. FIG. 1 is a schematic diagram illustrating an example of the configuration of a distributed ledger. 2 is a block diagram showing an example of a configuration of a diagnosis management terminal; FIG. FIG. 2 is a block diagram showing an example of the configuration of a simple diagnosis field terminal; FIG. 2 is a block diagram showing an example of a configuration of a diagnostic information server. FIG. 4 is an explanatory diagram showing an example of a method for diagnosing the degree of deterioration of a battery. FIG. 13 is a schematic diagram showing an example of a battery information input mode. FIG. 13 is a schematic diagram showing an example of a diagnosis result presentation mode. FIG. 13 is a schematic diagram showing an example of a battery evaluation result mode. 10 is a schematic diagram showing an example of information recorded in association with a battery diagnosis result and a purchase price. FIG. FIG. 13 is a schematic diagram showing an example of the purchase price of a battery as a comparative example. 11 is a schematic diagram showing an example of information recorded in association with a diagnostic result and a purchase price after a decision has been made to purchase a battery. FIG. FIG. 2 is a block diagram showing an example of the configuration of a detailed diagnosis field terminal; FIG. 4 is a schematic diagram showing an example of information recorded when a battery is repaired and refurbished. 2 is a block diagram showing an example of the configuration of a detailed diagnosis management terminal. FIG. FIG. 13 is a schematic diagram showing an example of information recorded when a battery is recycled. 2 is a block diagram showing an example of a configuration of a battery management terminal; FIG. 11 is a schematic diagram showing an example of information recorded when a battery is reused; FIG. FIG. 11 is a flow diagram showing an example of processing between a simple diagnosis field terminal and a distributed ledger system. FIG. 11 is a flow diagram showing an example of processing between a detailed diagnosis field terminal and a distributed ledger system. FIG. 11 is a flow diagram showing an example of processing between a battery management terminal and a distributed ledger system. A flow diagram showing an example of processing between a detailed diagnosis management terminal and a distributed ledger system. A flow diagram showing an example of processing between a diagnostic management terminal and a distributed ledger system. FIG. 13 is a schematic diagram showing an example of a business evaluation information display screen. FIG. 13 is a schematic diagram showing an example of a certification information display screen. FIG. 13 is a schematic diagram showing an example of an evaluation information search screen. FIG. 13 is a schematic diagram showing an example of an evaluation information ranking screen. FIG. 13 is a schematic diagram showing an example of a battery search screen. FIG. 13 is a schematic diagram showing an example of a battery usage information screen. FIG. 13 is a schematic diagram showing a first example of a battery history information screen. FIG. 13 is a schematic diagram showing a second example of a battery history information screen.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing an example of the configuration of an information processing system according to this embodiment. The information processing system includes a distributed ledger system having a plurality of ledger management nodes 10 connected to a peer-to-peer (P2P) network 1, a diagnosis management terminal 20, a simple diagnosis site terminal 30, a detailed diagnosis site terminal 40, a detailed diagnosis management terminal 50, a battery management terminal 60, a sales management terminal 70, a battery information server 110, a diagnosis information server 120, an operation information server 130, a sales information server 140, a recycle server 150, and a history information server 170, which are connected to each ledger management node. A diagnosis method analysis terminal 160 is connected to the diagnosis information server 120. Note that the battery information server 110, the diagnosis information server 120, the operation information server 130, the sales information server 140, the recycle server 150, and the history information server 170 are divided for convenience, and the functions of each server may be integrated with other servers or distributed to other servers. The servers may be integrated into one server, or may be distributed across two or more servers. Also, the distributed ledger system does not require a specific configuration, and may be configured as a client-server system, consisting of each terminal and each server.

The diagnosis management terminal 20 is a terminal installed in the business establishment or office of a car or battery manufacturer, a car sharing business, etc. The simple diagnosis site terminal 30 is a terminal installed in the maintenance facility or office of a maintenance business such as a 4S store (4S) (a dealer store in China) or a sharing business. The detailed diagnosis site terminal 40 is a terminal installed in the factory or office of a refurbishment or dismantling business. The detailed diagnosis management terminal 50 is a terminal installed in the factory or office of a recycling business. The battery management terminal 60 is a terminal installed in the business establishment or office of a reuse operation manager. The sales management terminal 70 is a terminal installed in the business establishment or office of a user of reused batteries such as an electric power company. In this specification, the car or vehicle is assumed to be an HEV or EV.

The battery information server 110 is a server for accessing a battery DB (not shown) that records battery information related to the battery, and has a function for writing battery information to the battery DB, a function for reading battery information from the battery DB, a function for updating the battery DB, and the like. The diagnostic information server 120 has a function for diagnosing the degree of deterioration of the battery. The diagnostic information server 120 is also a server for accessing a diagnostic DB (not shown) that records battery diagnostic information, and has a function for writing diagnostic information to the diagnostic DB, a function for reading diagnostic information from the diagnostic DB, a function for updating the diagnostic DB, and the like. The operation information server 130 is a server for accessing an operation DB (not shown) that records battery operation information, and has a function for writing operation information to the operation DB, a function for reading operation information from the operation DB, a function for updating the operation DB, and the like. The sales information server 140 is a server for accessing a sales DB (not shown) that records battery sales-related information, and has a function for writing sales-related information to the sales DB, a function for reading sales-related information from the sales DB, a function for updating the sales DB, and the like. Recycle server 150 is a server for accessing a recycle DB (not shown) that records battery recycle-related information, and has functions such as writing recycle-related information to the recycle DB, reading recycle-related information from the recycle DB, and updating the recycle DB. History information server 170 is a server for accessing a history DB (not shown) that records battery history information, and has functions such as writing history information to the history DB, reading history information from the history DB, and updating the history DB.

The distributed ledger system records and manages information related to the processing executed at each of the diagnosis management terminal 20, simple diagnosis on-site terminal 30, detailed diagnosis on-site terminal 40, detailed diagnosis management terminal 50, battery management terminal 60, and sales management terminal 70, as well as information provided from each of the terminals, in a distributed ledger, which will be described later. The distributed ledger system can also provide the information recorded in the distributed ledger to each of the terminals.

The distributed ledger system records and manages in a distributed ledger information relating to the processing executed by each of the batteries information server 110, the diagnostic information server 120, the operational information server 130, the sales information server 140, and the recycle server 150, as well as information provided by each of the servers. The distributed ledger system can also provide each of the servers with the information recorded in the distributed ledger.

Figure 2 is a schematic diagram showing an example of the configuration of the ledger management node 10. The ledger management node 10 can be configured as a computer or a computer system. The ledger management node 10 is installed in the business establishments and offices of automobile and battery manufacturers, automobile sharing businesses, 4S stores (Chinese dealer stores), maintenance facilities and offices of maintenance businesses such as sharing, factories and offices of refurbishment and dismantling businesses, factories and offices of recycling businesses, businesses and offices of reuse operation managers, and businesses and offices of reuse battery users such as electric power companies. The ledger management node 10 may function as a diagnosis management terminal 20, a simple diagnosis site terminal 30, a detailed diagnosis site terminal 40, a detailed diagnosis management terminal 50, a battery management terminal 60, or a sales management terminal 70.

The ledger management node 10 includes a communication unit 11, a ledger information generation unit 12, a ledger recording unit 13, a ledger information reference unit 14, and a database 15.

The communication unit 11 has a function to communicate with other ledger management nodes 10 connected to the network 1. The communication unit 11 has a function to communicate with the diagnosis management terminal 20, the simple diagnosis site terminal 30, the detailed diagnosis site terminal 40, the detailed diagnosis management terminal 50, the battery management terminal 60, and the sales management terminal 70. The communication unit 11 also has a function to communicate with the battery information server 110, the diagnosis information server 120, the operation information server 130, the sales information server 140, and the recycle server 150.

The database 15 can be configured with a non-volatile semiconductor memory or a hard disk, whose recorded contents can be rewritten. The database 15 records a node list 151 and a distributed ledger 152.

The node list 151 registers the IP address and electronic certificate of a ledger management node 10 that has been properly registered in the distributed ledger system, in association with identification information that identifies the ledger management node 10. The public key and electronic signature of each ledger management node 10 are recorded in the electronic certificate. When a new ledger management node 10 is properly registered, the registration is reflected in the node list 151.

3 is a schematic diagram showing an example of the configuration of the distributed ledger 152. As shown in FIG. 3, the distributed ledger 152 includes multiple ledger information 200. The multiple ledger information 200 are connected in series to form a so-called blockchain. Each ledger information 200 has a timestamp 201, a hash value (also called a "hash value") 202 of the previous ledger information, and record information 203. The timestamp 201 is information indicating the date and time when the ledger information was generated. The hash value 202 is a value generated based on a hash function preset in the previous ledger information. The record information 203 is the main part of the information to be registered in the ledger information 200. The record information 203 includes, for example, information on each event such as diagnosis of the degree of deterioration, buying and selling transactions, repair and regeneration, reuse such as driving use and stationary use, and disposal over the period from the time of battery manufacture to recycling, associated with a battery ID (identification information for identifying a battery), as well as information such as the use history of the battery and the operation history of the battery.

The ledger information generation unit 12 generates ledger information 200 to be recorded in the distributed ledger 152 using information acquired via the communication unit 11 from the diagnosis management terminal 20, the simple diagnosis site terminal 30, the detailed diagnosis site terminal 40, the detailed diagnosis management terminal 50, the battery management terminal 60, and the sales management terminal 70, as well as the battery information server 110, the diagnosis information server 120, the operation information server 130, the sales information server 140, and the recycle server 150.

The ledger recorder 13 determines whether the newly generated ledger information 200 at another ledger management node 10 satisfies a consensus rule (also called a "consensus algorithm") preset in the distributed ledger system. The ledger recorder 13 records the ledger information 200 that satisfies the predetermined consensus rule in the distributed ledger 152. In this case, the new ledger information is added to the end of the vertically connected ledger information 200.

When the ledger information reference unit 14 receives a request to reference the contents of the distributed ledger 152 from the diagnosis management terminal 20, the simple diagnosis site terminal 30, the detailed diagnosis site terminal 40, the detailed diagnosis management terminal 50, the battery management terminal 60, and the sales management terminal 70, as well as the battery information server 110, the diagnosis information server 120, the operation information server 130, the sales information server 140, and the recycle server 150 via the communication unit 11, it reads the record information 203 corresponding to the request from the distributed ledger 152 and transmits the read record information 203 to the requester.

Figure 4 is a block diagram showing an example of the configuration of the diagnostic management terminal 20. The diagnostic management terminal 20 includes a control unit 21 that controls the entire terminal, a communication unit 22, a memory unit 23, a display panel 24, an operation unit 25, and an information providing unit 26. The diagnostic management terminal 20 can be configured as a personal computer, a tablet terminal, a smartphone, etc.

The control unit 21 can be composed of a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), etc.

The communication unit 22 has a function for communicating with the ledger management node 10. The storage unit 23 is composed of a semiconductor memory or a hard disk, etc., and can store information acquired via the communication unit 22. The storage unit 23 can also store required information such as the processing results in the diagnostic management terminal 20.

The display panel 24 can be configured with a liquid crystal display or an organic EL (Electro Luminescence) display. The operation unit 25 can be configured with, for example, a keyboard, a mouse, etc. The operation unit 25 can also be configured with a touch panel or the like, and can be used to input characters on the display panel 24, and to operate icons, images, characters, etc. displayed on the display panel 24.

The information providing unit 26 can provide information such as battery performance data and optimal operation methods to the ledger management node 10 via the communication unit 22. The information providing unit 26 can identify the battery's operational performance based on information such as battery information, battery diagnostic information, operational status, and usage history, or calculate the battery's average lifespan, recycling rate, etc. The information providing unit 26 can identify the optimal battery operation method based on information such as the battery's operational performance and average lifespan.

As described above, battery and automobile manufacturers and sharing businesses can use the diagnostic management terminal 20 to obtain remaining capacity information for batteries related to their companies, and by comparing it with vehicle operation methods, clarify operation methods that enable longer battery life. In addition, by tracing the usage history of batteries up until they are recycled, the businesses can understand the appropriate disposal of batteries, recycling rates, etc.

Figure 5 is a block diagram showing an example of the configuration of the simple diagnosis on-site terminal 30. The simple diagnosis on-site terminal 30 includes a control unit 31 that controls the entire terminal, a communication unit 32, a memory unit 33, a display panel 34, an operation unit 35, and an interface unit 36. The simple diagnosis on-site terminal 30 can be configured as a personal computer, a tablet terminal, a smartphone, etc.

The control unit 31 can be composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), etc.

The communication unit 32 has a function for communicating with the ledger management node 10. The memory unit 33 is composed of a semiconductor memory or a hard disk, etc., and can store information acquired via the communication unit 32. The memory unit 33 can also store required information such as the processing results in the simple diagnosis field terminal 30.

The display panel 34 can be configured with a liquid crystal display or an organic EL (Electro Luminescence) display. The operation unit 35 can be configured with, for example, a keyboard, a mouse, etc. The operation unit 35 can also be configured with a touch panel or the like, and can be used to input characters on the display panel 34, and to operate icons, images, characters, etc. displayed on the display panel 34.

The interface unit 36 is equipped with multiple terminals for connecting a battery (e.g., a battery pack), a measurement switch for measuring the battery, and the like, and can measure data such as the battery current and voltage. Here, the battery pack is composed of multiple battery modules, and each battery module has multiple cells (battery cells) connected in series or in series and parallel.

The control unit 31 can transmit a diagnostic information request together with the battery information (e.g., the manufacturer name, model, and year of the vehicle in which the battery is installed, the battery ID, the battery measurement data, etc.) to the diagnostic information server 120 via the communication unit 32. The diagnostic information server 120 can diagnose the degree of deterioration of the battery using the received battery information and measurement data. In addition, by linking with the sales information server 140, the diagnostic information server 120 can obtain the transaction price of the battery whose degree of deterioration has been diagnosed using a calculation method that defines the relationship between the degree of deterioration of the battery and the transaction price. The control unit 31 can obtain the diagnosis result (diagnosis information) indicating the degree of deterioration of the battery and the transaction price of the battery from the diagnostic information server 120 via the communication unit 32.

Maintenance businesses such as 4S shops and sharing companies can use the simple diagnosis site terminal 30 to measure the remaining battery capacity of various batteries installed in cars from various manufacturers brought into their maintenance facilities. After inputting the necessary vehicle information into the simple diagnosis site terminal 30, the battery is connected to the terminals and a comprehensive diagnosis is performed using multiple diagnostic techniques, after which the battery diagnosis results and purchase price can be confirmed. The details of this wide-ranging diagnostic system that is compatible with many types of batteries are explained below.

Figure 6 is a block diagram showing an example of the configuration of the diagnostic information server 120. The diagnostic information server 120 includes a control unit 121 that controls the entire server, a communication unit 122, a storage unit 123, a switching unit 124, a registration unit 125, and a diagnosis unit 126. The control unit 121 can be configured with a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc.

The communication unit 122 has a function of communicating with the ledger management node 10. For example, the communication unit 122 receives battery information and battery measurement data together with a diagnostic information request from the simple diagnosis field terminal 30. The communication unit 122 can also acquire battery information from the battery information server 110. The communication unit 122 can also acquire battery sales-related information from the sales information server 140.

The storage unit 123 is composed of a hard disk or semiconductor memory, etc., and can store information acquired via the communication unit 122. The storage unit 123 can also store required information such as the processing results in the diagnostic information server 120.

The switching unit 124 can selectively switch the diagnostic method used to diagnose battery deterioration based on the battery information acquired via the communication unit 122.

The registration unit 125 has a function for registering newly developed or designed simplified diagnostic algorithms. The registration unit 125 can add new simplified diagnostic algorithms and update old simplified algorithms.

The diagnostic unit 126 includes a diagnostic algorithm D1 (127), a diagnostic algorithm D2 (128), a diagnostic algorithm D3 (129), and a charge/discharge algorithm 135. Diagnostic algorithms D1 to D3 are simplified diagnostic algorithms, and are high-speed diagnostic methods that require a relatively short time for diagnosis. The charge/discharge algorithm provides highly accurate diagnostic results but requires a relatively long time for diagnosis. The switching unit 124 can select a required diagnostic algorithm based on the battery information or a diagnostic method selected by the user. The diagnostic unit 126 diagnoses the degree of deterioration of the battery using the selected diagnostic algorithm. Note that, for convenience, three simplified diagnostic algorithms are shown in the example of FIG. 6, but the diagnostic unit 126 can have four or more diagnostic algorithms.

Figure 7 is an explanatory diagram showing an example of a diagnostic method for diagnosing the degree of deterioration of a battery. The first diagnostic method is characterized by the fact that it takes a long time to diagnose but the diagnostic result is highly accurate. The first diagnostic method, for example, measures capacity using complete charging and discharging. This diagnostic method is based on a discharge current integration method during complete charging and discharging, in which the battery is once fully charged (SOC: State of Charge is 100%), and then discharged until the SOC becomes 0%, and the current integration method is used to determine the full charge capacity during discharging, and the SOH (State of Health) is estimated by dividing it by the initial full charge capacity.

The second diagnostic method is a simplified diagnostic method that has a shorter diagnostic time than the first diagnostic method (e.g., about 0.1 seconds to 10 minutes). The second diagnostic method includes, for example, diagnostic methods such as charge curve analysis, discharge curve analysis, table lookup from internal resistance, and model-based estimation.

The charging curve analysis method involves first measuring the voltage, current, and temperature of a battery during charging, recording this data as a charging curve, setting initial values for parameters that represent the internal state of the battery, and then estimating the parameters through regression calculations to calculate the battery state (e.g., battery capacity).

Discharge curve analysis involves characterizing the discharge curve by, for example, differentiating it with respect to voltage, extracting the capacity changes of each active material in the positive and negative electrodes of the battery, and calculating the state of the battery (e.g., battery capacity).

Table lookup from internal resistance involves obtaining the relationship between SOH and internal resistance in advance, putting it into a table, and then determining SOH from the measured internal resistance by table lookup.

Model-based estimation involves estimating the SOH by associating the SOH with a specific parameter in the model used in SOC estimation and then estimating the parameter. For example, the fully charged capacity of the battery can be expressed as the capacity of a capacitor in an equivalent circuit model, and the SOH can be calculated by estimating that capacity. It is also possible to estimate the SOH using a neural network. Note that the diagnostic method is not limited to the example shown in the figure. The diagnostic method as shown in FIG. 7 may be configured, for example, by automobile manufacturer, by battery manufacturer, or by battery type. For example, it can be classified into categories such as for automobile manufacturers M1, M2, and M3, and for other automobile manufacturers.

The diagnostic method analysis terminal 160 includes hardware such as a CPU (e.g., a multi-processor with multiple processor cores), GPUs (Graphics Processing Units), DSPs (Digital Signal Processors), and FPGAs (Field-Programmable Gate Arrays). The diagnostic method analysis terminal 160 can generate a new diagnostic algorithm for the diagnostic information server 120 or re-learn the simplified diagnostic algorithm by using data obtained by the first diagnostic method, which has high diagnostic accuracy, as learning data for the simplified diagnostic algorithm composed of a neural network.

The diagnostic information server 120 (registration unit 125) can register a second diagnostic method, which has a shorter diagnostic time than the first diagnostic method, from time to time, and diagnose the degree of deterioration of the battery using the registered second diagnostic method. This makes it possible to timely estimate the degree of deterioration of new automobiles and new batteries installed in those automobiles that are newly released on the market.

The diagnostic method analysis terminal 160 can also provide the data obtained by the first diagnostic method as learning data to the business operator analyzing the diagnostic method.

Next, we will explain the operation of the simple diagnosis on-site terminal 30. The simple diagnosis on-site terminal 30 can switch between the following modes: battery information input mode, diagnosis result presentation mode, and battery evaluation result mode.

8 is a schematic diagram showing an example of the battery information input mode 301. A battery installed in a vehicle brought into a maintenance facility of a maintenance company or the like is connected to the simple diagnosis site terminal 30, and a user of the maintenance company or the like can input or select various information by selecting the battery information input mode 301. The information to be input or selected includes, for example, the manufacturer name, model, year, vehicle management number, vehicle number (manufacturer's serial number, etc.), and vehicle usage status (for example, mileage, years of use, frequency of use, average daily mileage, etc.). The information to be input may be input directly, or multiple options may be displayed and the appropriate one selected. Although not shown, the simple diagnosis site terminal 30 can include the battery ID and battery measurement data (which may include, for example, current, voltage, temperature, etc.) in the input information. The battery ID can be input, for example, by reading a two-dimensional barcode attached to the battery. The information to be input in the battery information input mode 301 may be transmitted to the simple diagnosis site terminal 30 by wireless communication from a communication terminal (for example, a smartphone, etc.) carried by the user.

The simple diagnosis site terminal 30 transmits the input information to the diagnosis information server 120.

Figure 9 is a schematic diagram showing an example of the diagnostic result presentation mode 302. The diagnostic information server 120 acquires battery information on the battery from the battery information server 110 based on the input information, and based on this information, selects one or more diagnostic algorithms to be used for diagnosing the degree of deterioration of the battery, and can diagnose the degree of deterioration of the battery using the selected diagnostic algorithm. The diagnostic result presentation mode 302 includes the diagnostic result. In the diagnostic result presentation mode 302, for example, the vehicle serial number, diagnostic method, recommended method, and diagnostic methods A to C are displayed. Here, the recommended method can be, for example, a diagnostic method specific to the automobile manufacturer or a battery manufacturer linked to the automobile manufacturer, or a diagnostic method that is optimal for each of the automobile manufacturers. In addition, the diagnostic method can be recommended according to the model number of the battery. The user selects a diagnostic method and operates the "Diagnosis execution" icon, and diagnostic results 1 to 3 according to the selected diagnostic method are displayed. The diagnostic result (degree of deterioration) can be displayed, for example, as the percentage of the battery capacity (the capacity of a new battery is taken as 100%). Generally, 70% is the guaranteed capacity. The degree of deterioration can also be displayed as the remaining lifespan of the battery (how many years it will last).

The diagnostic method and the number of corresponding diagnostic results may be selected by the user or may be a preset number. As shown in FIG. 9, by displaying diagnostic results based on at least three diagnostic methods, even if the diagnostic results vary, the most likely diagnostic result can be identified. In addition, the degree of battery deterioration may be diagnosed by the simple diagnostic field terminal 30, and the diagnostic results from the diagnosis performed by the simple diagnostic field terminal 30 may be transmitted to the distributed ledger system and recorded in the diagnostic DB or a specified DB.

As described above, the method for diagnosing the degree of battery deterioration and the diagnosis results of the degree of deterioration when using this diagnostic method are displayed, so that car users can easily understand the degree of deterioration of the battery installed in their car without having to ask an authorized dealer.

Figure 10 is a schematic diagram showing an example of the battery evaluation result mode 303. In the battery evaluation result mode 303, the diagnostic method, overall result, purchase price, and detailed conditions are displayed. In the example shown in the figure, both the overall result and the purchase price are displayed, but only one of them may be displayed. Also, instead of the overall result, each diagnostic result by each diagnostic method may be displayed. The detailed conditions include information such as contract terms regarding the purchase and sale of batteries. The contract terms include, for example, wording that specifies the purchase and sale by the seller and buyer, the purchase price, payment deadline, the time of ownership transfer, liability for non-compliance with the contract, risk of risk, etc. When the "Execute" icon is operated, processing to establish a purchase contract for the battery is executed, and when the "Do not execute" icon is operated, the purchase and sale contract for the battery is not established. Note that only one of the diagnostic result and the purchase price may be displayed.

Figure 11 is a schematic diagram showing an example of information recorded in association with the diagnosis result of the battery and the purchase price. The information shown in Figure 11 can be recorded, for example, in a diagnosis DB, but may be recorded in another DB. As shown in Figure 11, information on the vehicle model, year, diagnosis date, diagnosis method, diagnosis result (for example, SOH), and purchase price is recorded in association with the battery ID. The vehicle model and year are the vehicle model and year in which the battery is installed. The diagnosis method may be either the first diagnosis method (full charge/discharge method) or the second diagnosis method (simple method), but here, the simple method is used, which is expected to be used frequently. The diagnosis result is, for example, SOH = 75%, and the purchase price calculated based on the diagnosis result, etc. is 100,000 yen. Note that the purchase price is merely an example for explanation and is not limited to this. The information shown in Figure 11 is recorded in the distributed ledger system.

Figure 12 is a schematic diagram showing an example of a purchase price of a battery as a comparative example. The comparative example shown in Figure 12 shows an example of a purchase price determined without performing the first diagnostic method (full charge and discharge method) or the second diagnostic method (simplified method) of this embodiment. That is, there are various types and years of automobiles, and the batteries installed in automobiles may also differ depending on the automobile manufacturer, and there are various types of batteries. In that case, even if an attempt is made to diagnose the degree of deterioration of a battery, there are circumstances such as not knowing an appropriate diagnostic method or not having a diagnostic method established in the first place, so it is considered that in many cases the degree of deterioration of the battery cannot be used as a judgment material when determining the purchase price of the battery. In such cases, as shown in Figure 12, the purchase price of the battery is determined based on the mileage and period of use (the period from new car registration to the present) of the automobile in which the battery is installed. In addition, since the degree of deterioration of the battery is unknown, there is a tendency in the market to set the purchase price as low as possible. In the example of Figure 12, the purchase price of a battery equivalent to that in Figure 11 is set at 70,000 yen.

As described above, according to this embodiment, a wide-ranging diagnostic system can be provided that can diagnose various batteries in one stop, so the degree of deterioration of the battery (diagnosis results) can be incorporated into the calculation of the purchase price of the battery, making it possible to suppress a decline in the market price of the battery. This makes the residual value of the battery clear, and makes it possible to expand and create a leasing market for reusing batteries.

Figure 13 is a schematic diagram showing an example of information recorded in association with the diagnosis result and the purchase price after the decision to buy the battery. The information shown in Figure 13 can be recorded, for example, in a diagnosis DB, but may be recorded in another DB. As shown in Figure 13A, the purchase price, diagnosis date, diagnosis method, diagnosis result (e.g., SOH), and updated purchase price are recorded in association with the battery ID. The purchase price is the purchase price exemplified in Figure 11. It is also assumed that the battery will be diagnosed after the decision to buy the battery is made. The diagnosis date is the diagnosis date after the decision to buy the battery. Compared to a diagnosis performed by bringing the car to a repair shop, it is assumed that the diagnosis of the battery for which the decision to buy the battery has been made will be performed with a margin of error, so here, the battery diagnosis method is the full charge/discharge method. As a result of the full charge/discharge method, the SOH is 85%. With the simple method exemplified in Figure 11, the SOH was 75%. It is assumed that the degree of deterioration of the battery by a more accurate diagnosis method is not as advanced as the initial diagnosis result. In this case, the purchase price can be set higher, so for example, the post-renewal purchase price can be set at 120,000 yen. The post-renewal purchase price is the transaction price when the 4S store, sharing or other maintenance business that purchased the battery resells it to a reuse operation manager (which may include a refurbishment/dismantling business). The actual transaction price of the battery may be the post-renewal purchase price or the recent market price (market price). The transaction unit can be the battery pack unit, but it may also be the battery module unit or the cell unit.

As shown in FIG. 13B, the purchase price, recent transaction status, and updated purchase price are recorded in association with the battery ID. The purchase price is the purchase price exemplified in FIG. 11. It is also assumed that the transaction status of the battery will be updated after the decision to purchase the battery has been made. In the example of FIG. 13B, the recent market price of battery ID: XXX is 105,000 to 115,000 yen. Since the market price is higher than the initially set purchase price, the purchase price can be set higher, and the updated purchase price can be set to 110,000 yen, for example. The information exemplified in FIG. 13 is recorded in the distributed ledger system.

As mentioned above, even after the purchase price of a battery has been determined, it is possible that the battery may need to be re-diagnosed or that the market price may fluctuate. By updating the purchase price taking these factors into account, the residual value of the battery can be made even clearer.

As described above, the diagnosis results of the battery's deterioration level and the transaction price are displayed, so that the user can easily understand the market value of the battery he or she owns. In addition, as described above, by displaying the contract terms regarding battery transactions and configuring the system to accept the possibility of trading batteries, battery transactions can be easily carried out, and the circulation of batteries that still have sufficient market value remaining can be promoted.

The calculation method for the transaction price (purchase price) of a battery can be calculated, for example, using the following formula. That is, transaction price C = (a + b + c + d + e) x C0 Here, a is a weighting coefficient for the degree of deterioration, i.e., SOH (state of health). The higher the SOH, the higher the value of a can be. b is a weighting coefficient for the diagnostic method. For example, if the diagnostic method is one simple method, a comprehensive diagnosis using multiple simple methods, and a full charge/discharge method, the weighting coefficients can be set as b1, b2, and b3, respectively, so that b1 < b2 < b3. The higher the reliability of the diagnostic method, the higher the value of b (b1, b2, b3). c is a weighting coefficient for the brand power of the automobile manufacturer and battery manufacturer, and the higher the brand power, the higher the value of c can be. d is a weighting coefficient for the battery's usage period, and the shorter the usage period, the higher the value of d can be. e is a weighting coefficient that reflects the battery's trading status, and the higher the market price, the higher the value of e can be. Note that the weighting coefficients a to e can be normalized as appropriate. The transaction price may be calculated using a trained model generated by machine learning. The weighting coefficients mentioned above are not fixed. For example, as information on the diagnosis results is collected, the weighting coefficients can be modified to calculate a more appropriate purchase price, and the trained model can be retrained.

As described above, the diagnostic information server 120 can acquire battery information (battery-related information) about the battery, diagnose the degree of deterioration of the battery using the acquired battery information and multiple diagnostic methods for diagnosing the degree of deterioration of the battery, and output at least one of the diagnosed degree of deterioration and the trading price of the battery according to the degree of deterioration. The diagnostic information server 120 can calculate the trading price of the battery according to the diagnosed degree of deterioration using a calculation method that defines the relationship between the degree of deterioration of the battery and the trading price.

In addition, the diagnostic information server 120 can diagnose the degree of deterioration of the battery (total result) by performing a predetermined calculation on each degree of deterioration diagnosed using multiple diagnostic methods. The predetermined calculation may be, for example, the average value or the median value of the multiple diagnostic results.

There are many different automobile manufacturers on the market, and a wide variety of batteries are installed in the vehicles, and no method has been established to accurately estimate the capacity of these various batteries. In this embodiment, battery information of the battery to be diagnosed is obtained, and multiple diagnostic algorithms applicable to the battery are selected to estimate the degree of deterioration, so that the degree of deterioration of various batteries installed in automobiles of each manufacturer that are being used by automobile users can be estimated. This allows automobile users to easily understand the degree of deterioration of the batteries installed in their own cars without having to ask an authorized dealer. Furthermore, from the perspective of the industry as a whole, a method can be established to evaluate the capacity of batteries in automobiles that are being used on the market.

In this embodiment, the purchase price is displayed, so that the automobile user can determine how much money can be deducted from the price if they replace the automobile battery now, and at the same time, the maintenance business can grasp the trading price of the battery. Generally, the less the deterioration of the battery, the higher the market value of the battery. Therefore, the battery can be reused for driving or stationary use at a timing when the market value is not lost, and it is possible to provide an opportunity to fully utilize batteries that have market value.

Figure 14 is a block diagram showing an example of the configuration of a detailed diagnosis field terminal 40. The detailed diagnosis field terminal 40 includes a control unit 41 that controls the entire terminal, a communication unit 42, a memory unit 43, a battery pack diagnosis unit 44, a display panel 45, an operation unit 46, and a cell diagnosis unit 47. The detailed diagnosis field terminal 40 can be configured as a personal computer, a tablet terminal, a smartphone, etc.

The control unit 41 can be composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), etc.

The communication unit 42 has a function of communicating with the ledger management node 10. The communication unit 42 can acquire battery information of the target battery from the battery information server 110. The communication unit 42 can also acquire diagnostic information of the target battery from the diagnostic information server 120.

The storage unit 43 is composed of a semiconductor memory or a hard disk, and can store information acquired via the communication unit 42. The storage unit 43 can also store required information such as the processing results in the detailed diagnosis site terminal 40.

The display panel 45 can be configured with a liquid crystal display or an organic EL (Electro Luminescence) display. The operation unit 46 can be configured with, for example, a keyboard, a mouse, etc. The operation unit 46 can also be configured with a touch panel or the like, and can be used to input characters on the display panel 45, and to operate icons, images, characters, etc. displayed on the display panel 45.

The battery pack diagnostic unit 44 has a function of diagnosing the condition of a battery pack that is the target of repair and regeneration (refurbishment, etc.). By connecting the battery pack to the required terminals, it is possible to measure the battery's voltage, current, temperature, SOC (State of Charge), etc. The battery pack diagnostic unit 44 can estimate the degree of deterioration of the battery pack using the first diagnostic method based on the discharge current integration method during full charge and discharge described above. The battery pack diagnostic unit 44 can also perform diagnosis using the second diagnostic method described above.

The cell diagnosis unit 47 can measure the voltage, current, temperature, and SOC (State of Charge) for each cell after dividing the target battery pack into cells. The cell diagnosis unit 47 can estimate the degree of deterioration of the battery pack using the first diagnosis method based on the discharge current integration method during full charging and discharging described above. In the case of a cell in which the cell state (e.g., time-series data such as voltage, current, and temperature) can be recorded in the memory installed in each cell, the cell diagnosis unit 47 can read data from the memory in the cell and estimate the degree of deterioration of the cell. In addition, the detailed diagnosis site terminal 40 can provide the data obtained by the cell diagnosis unit 47 as learning data to the business operator who analyzes the diagnosis method.

The detailed diagnosis site terminal 40 (control unit 41) can obtain battery information on the battery removed from the vehicle from the battery information server 110 via the communication unit 42, obtain diagnostic information indicating the degree of deterioration of the battery from the diagnostic information server 120, and determine whether or not the battery can be repaired and reconditioned based on the obtained battery information and diagnostic information. For example, if the SOH indicating the degree of deterioration is equal to or lower than a predetermined threshold, it can be determined that the battery cannot be repaired and reconditioned. Here, the threshold can be, for example, a value at which the battery cannot be used for stationary use.

The detailed diagnosis site terminal 40 acquires battery information relating to the battery to be repaired and reconditioned or the repaired and reconditioned battery from the battery information server 110, and diagnoses the degree of deterioration of the battery using the acquired battery-related information and a first diagnosis method based on the discharge current integration method during complete charging and discharging, and transmits the diagnosis results to the diagnosis information server 120 and records them in the diagnosis DB.

The detailed diagnosis site terminal 40 can use the required diagnostic method to diagnose the degree of deterioration of each of the multiple cells contained in the battery to be repaired and reconditioned, and transmit the diagnostic results to the diagnostic information server 120 and record them in the diagnostic DB.

The refurbishment/dismantling business can use the detailed diagnosis site terminal 40 to obtain battery information and diagnostic information of the battery to be repaired and reconditioned (refurbished, etc.) from the battery information server 110 and diagnostic information server 120, respectively. The refurbishment/dismantling business can use the detailed diagnosis site terminal 40 to check the preliminary diagnosis status of the battery pack and further perform detailed diagnosis on a cell-by-cell basis. The detailed diagnosis results performed by the refurbishment/dismantling business are recorded in the diagnostic DB by the diagnostic information server 120. In addition, when the refurbishment/dismantling business repairs and reconditioned the battery (for example, when replacing some defective cells in a battery pack, or when collecting and repacking cells determined to be good to assemble a battery pack), the battery-related information on the repaired and reconditioned battery can be transmitted to the diagnostic information server 120 and recorded in the diagnostic DB.

Figure 15 is a schematic diagram showing an example of information recorded when a battery is repaired and refurbished. The information shown in Figure 15 can be recorded, for example, in a diagnostic DB, but may also be recorded in another DB. As shown in Figure 15, the following information is recorded in association with the battery ID: the date of repair and refurbishment, the diagnostic result before repair and refurbishment, the diagnostic method of the diagnosis before repair and refurbishment, the repair and refurbishment content, the diagnostic result after repair and refurbishment, and the diagnostic method of the diagnosis after repair and refurbishment. In the example of Figure 15, the diagnostic method before repair and refurbishment is a full charge and discharge method, and the diagnostic result is 75%. The repair and refurbishment content can be a battery pack replacement or a cell replacement, but here it is cell replacement. Although not shown, the number of replaced cells, the cell ID of the cell incorporated in the battery, the cell ID of the cell removed from the battery, the diagnostic result of each cell, etc. may be recorded. The diagnostic method after repair and refurbishment is a full charge and discharge method, and the diagnostic result is 85%. By removing the defective cell and replacing it with a good cell, the SOH of the battery is increased, and the residual value of the battery can be improved. In another example of FIG. 15, the diagnostic method before repair and regeneration is the full charge and discharge method, and the diagnostic result is that the SOH is 40%. If the threshold is 45%, the SOH is below the threshold, so it is determined that repair and regeneration is not possible, and the battery is sent to, for example, a recycling company.

Figure 16 is a block diagram showing an example of the configuration of a detailed diagnosis management terminal 50. The detailed diagnosis management terminal 50 includes a control unit 51 that controls the entire terminal, a communication unit 52, a memory unit 53, a display panel 54, an operation unit 55, and an interface unit 56. The detailed diagnosis management terminal 50 can be configured as a personal computer, a tablet terminal, a smartphone, etc.

The control unit 51 can be composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), etc.

The communication unit 52 has a function of communicating with the ledger management node 10. The communication unit 52 can acquire battery information (e.g., information on batteries to be discarded) from the battery information server 110. The communication unit 52 can acquire diagnostic information on batteries to be discarded from the diagnostic information server 120.

The storage unit 53 is composed of a semiconductor memory or a hard disk, and can store information acquired via the communication unit 52. The storage unit 53 can also store required information such as the processing results in the detailed diagnosis management terminal 50.

The display panel 54 can be configured with a liquid crystal display or an organic EL (Electro Luminescence) display. The operation unit 55 can be configured with, for example, a keyboard, a mouse, etc. The operation unit 55 can also be configured with a touch panel or the like, and can be used to input characters on the display panel 54, and to operate icons, images, characters, etc. displayed on the display panel 54.

The interface unit 56 is equipped with multiple terminals for connecting a battery (e.g., a battery pack), a measurement switch for measuring the battery, and the like, and can measure data such as the battery current and voltage. A battery to be disposed of can be connected to the interface unit 56.

The control unit 51 measures the battery to be disposed of via the interface unit 56, for example, measuring the remaining capacity, and if there is remaining capacity, it can completely discharge the battery at a predetermined discharge current value. This makes it possible to prevent electric shock when disassembling the battery for disposal.

Using the detailed diagnosis management terminal 50, the recycling company can obtain information on the batteries to be discarded (e.g., information on the rare metal components contained in the discarded batteries based on component information at the time of the battery's manufacture) and can also obtain and confirm diagnostic information for the batteries. The rare metal components can be obtained, for example, from a battery DB. In addition, the recycling company can use the detailed diagnosis management terminal 50 to check how the batteries should be handled and perform refining, etc. according to the rare metal components contained in the batteries. When recycling, the discarded batteries can be separated according to their rare metal components, and discarded batteries with similar components can be collected and recycled.

The detailed diagnosis management terminal 50 can transmit the details of the recycling process according to the rare metal components contained in the discarded batteries to the recycling server 150. The recycling server 150 can record the details of the recycling in the recycling DB.

Figure 17 is a schematic diagram showing an example of information recorded when a battery is recycled. The information shown in Figure 17 can be recorded in, for example, a recycling DB, but may also be recorded in another DB. As shown in Figure 17, information such as the recycling completion date, recycling company, battery type, rare metal components, and recycling method is recorded in association with the battery ID. The battery type indicates, for example, a lithium ion battery, a nickel-metal hydride battery, and the like. The rare metal components include, for example, lithium, nickel, cobalt, and manganese. The recycling method can perform recycling processing according to the rare metal components. For example, the recycling method can be determined according to the component ratio of lithium, nickel, cobalt, manganese, and the like, the most abundant component, and the like. In addition, the optimal recycling method is determined according to the battery type, and the method actually performed is recorded. This allows the user to grasp information regarding the recycling of the battery.

The detailed diagnosis management terminal 50 may transmit the contents of the recycling process to a terminal device of the battery manufacturer or the automobile manufacturer. The contents of the recycling process may include, for example, the recycled weight (recycled and waste amount) and the recycling rate relative to the weight of the battery material name (e.g., steel, aluminum, copper, resin, LiNiO2, etc.). This allows the automobile manufacturer and battery manufacturer to have an overview of their battery recycling rates and processed weights.

Figure 18 is a block diagram showing an example of the configuration of a battery management terminal 60. The battery management terminal 60 includes a control unit 61 that controls the entire terminal, a communication unit 62, a memory unit 63, a display panel 64, an operation unit 65, and an information providing unit 66. The battery management terminal 60 can be configured as a personal computer, a tablet terminal, a smartphone, etc.

The control unit 61 can be composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory), etc.

The communication unit 62 has a function for communicating with the ledger management node 10. The communication unit 52 can acquire battery information (e.g., information on reused batteries) from the battery information server 110. The communication unit 52 can acquire diagnostic information on reused batteries from the diagnostic information server 120. The communication unit 52 can also acquire operational information on reused batteries from the operational information server 130.

Here, the reused battery can be, for example, a battery that has been used in a stationary location. Diagnostic information for the battery can be acquired by a diagnostic device installed in the facility in which the battery is installed (for example, a power supply facility of an electric power company, a base station of a telecommunications company, etc.), and the diagnostic information is transmitted from the diagnostic device to diagnostic information server 120 and recorded in the diagnostic DB. Operational information can also be acquired by a management device installed in the facility in which the battery is installed, and the operational information is transmitted from the management device to operational information server 130 and recorded in the operational DB.

The storage unit 63 is composed of a semiconductor memory or a hard disk, and can store information acquired via the communication unit 62. The storage unit 63 can also store required information such as the processing results in the battery management terminal 60.

The display panel 64 can be configured with a liquid crystal display or an organic EL (Electro Luminescence) display. The operation unit 65 can be configured with, for example, a keyboard, a mouse, etc. The operation unit 65 can also be configured with a touch panel or the like, and can be used to input characters on the display panel 64, and to operate icons, images, characters, etc. displayed on the display panel 64.

The information providing unit 66 can generate information to provide to the insurance company the operational status and diagnostic information (e.g., degree of deterioration) of the reused battery obtained via the communication unit 62.

The battery management terminal 60 can obtain battery information on reused batteries that are repurposed vehicle batteries from the battery information server 110, and can use a diagnostic method according to the obtained battery information to transmit the diagnosed degree of deterioration of the reused battery to the diagnostic information server 120 and record it in the diagnostic DB. In this case, the functions of the diagnostic information server 120 can be used to diagnose the battery.

Figure 19 is a schematic diagram showing an example of information recorded when a battery is reused. The information shown in Figure 19 can be recorded in, for example, an operation DB, but may be recorded in another DB. As shown in Figure 19, information such as the reuse business operator, reuse location, reuse period, diagnosis date during reuse, and diagnosis result are recorded in association with the battery ID. The reuse business operator may be the name of the business operator or the ID, etc. If the reuse is for driving use, the reuse business operator is the owner (user) of the vehicle or the business operating the vehicle, and if the reuse is for stationary use, the reuse business operator is a business operator such as an electric power company, a power supply equipment company, or a communication business operator. The reuse location can be, for example, XX factory storage battery, OO power plant storage battery, OX company electric vehicle, or XX (individual) in OO city. The reuse period indicates the usage period of the battery. The diagnosis date during reuse indicates the diagnosis date if a diagnosis of the deterioration degree was performed again during the usage period. The diagnosis result is, for example, SOH, which is 60% in the example shown in the figure. Although they cannot be installed in automobiles that require the required driving distance, they can be fully reused for stationary use, making it possible to provide high added-value battery services.

The battery management terminal 60 can obtain the operational status of the reused battery from the operational information server 130 and the degree of deterioration of the reused battery from the diagnostic information server 120, and provide the obtained operational status and degree of deterioration to the insurance company.

As described above, after providing the battery to be reused to the reuse battery user, the reuse operation manager can use the battery management terminal 60 to continuously diagnose the reused battery and perform quality control of the reused battery. In addition, the reuse operation manager can provide the insurance company with the operation status and diagnostic information (e.g., degree of deterioration) of the reused battery at the required timing.

The sales management terminal 70 can be configured as a personal computer, a tablet terminal, a smartphone, etc. A reuse battery user uses the sales management terminal 70 to input the transaction price (purchase price) when trading batteries to reuse in-vehicle batteries (e.g., for stationary use or driving use). The sales management terminal 70 transmits the input transaction price to the sales information server 140, which can record transaction information including the transaction price in a transaction DB.

The sales information server 140 records the actual transaction price of the battery whose deterioration level has been diagnosed in the transaction DB, and can determine a calculation method that defines the relationship between the deterioration level of the battery and the transaction price based on the transaction price recorded in the transaction DB. The calculation method can be calculated, for example, by the following formula. That is, transaction price C = (α + β + γ) × C0, where α is the degree of deterioration, i.e., a weighting coefficient for the SOH (state of health), β is a weighting coefficient for the brand power of the automobile manufacturer and battery manufacturer, γ is a weighting coefficient for the battery's usage period, and C0 is the reference transaction price. The higher the SOH, the larger the coefficient α can be, the higher the brand power, the larger the coefficient β can be, and the shorter the battery's usage period, the larger the coefficient γ can be. By collecting the transaction prices of various batteries from users who have purchased various batteries to be reused, the price fluctuations of batteries in the market can be understood. By adjusting the calculation method from time to time according to price fluctuations, a calculation method that takes into account the trading conditions of the market can be determined, and the accuracy of the calculation method can be improved.

Next, we will explain how a comprehensive diagnostic system can be made into a platform using a distributed ledger system.

Figure 20 is a flow diagram showing an example of processing between the simple diagnosis on-site terminal 30 and the distributed ledger system. Since "4S stores, sharing and other maintenance businesses" use the simple diagnosis on-site terminal 30, the following explanation will be centered on the simple diagnosis on-site terminal 30. The processing of S1 to S11 will be explained below.

S1: Battery information is input to the simple diagnosis site terminal 30. In this case, the battery information of the battery pack ID: 001 to be serviced is input. The input battery information may be the information shown in FIG. 8.

S2: The simple diagnosis on-site terminal 30 sends a diagnostic information request to the distributed ledger system. The simple diagnosis on-site terminal 30 can send the input battery information (including the battery ID and battery measurement data) together with the diagnostic information request to the distributed ledger system.

S3: The distributed ledger system sends a diagnosis request to the diagnostic information server 120 via the ledger management node 10. Here, the diagnostic information server 120 can diagnose the degree of battery degradation using the acquired battery information and multiple diagnostic methods for diagnosing the degree of battery degradation. The diagnosis of the degree of battery degradation may be performed by the simple diagnosis on-site terminal 30, and the diagnosis results from the diagnosis performed by the simple diagnosis on-site terminal 30 may be sent to the distributed ledger system and recorded in the diagnosis DB or a specified DB.

S4: The distributed ledger system obtains the diagnosis result (estimated degree of battery deterioration) from the diagnostic information server 120 via the ledger management node 10.

S5: The distributed ledger system records the diagnosis results in the distributed ledger 152.

S6: The distributed ledger system calculates a purchase price according to the diagnosis result. Note that here, the distributed ledger system requests the diagnosis information server 120 or the sales information server 140 to calculate the purchase price, and obtains the purchase price calculated by the diagnosis information server 120 or the sales information server 140.

S7: The distributed ledger system notifies the simple diagnosis site terminal 30 of the diagnosis result and the purchase price. Here, the simple diagnosis site terminal 30 can display the information exemplified in FIG. 10. Also, at this point, the information exemplified in FIG. 11 is recorded in the diagnosis DB or a specified DB.

S8: The purchase decision is made on the simple diagnosis site terminal 30.

S9: The simple diagnosis on-site terminal 30 sends a request to record transaction information to the distributed ledger system.

S10: The distributed ledger system records the transaction information in the distributed ledger 152.

S11: The distributed ledger system generates certification information (certification date, regular assessment flag, etc.) and records it in the distributed ledger 152. Also, from this point onwards, the information shown in FIG. 13 is recorded in the diagnosis DB or a specified DB.

As described above, when a diagnosis of the degree of deterioration of an on-board battery is performed using a pre-registered diagnostic method, and when a transaction is performed at the transaction price, certification information (certification date, legitimate appraisal) associated with identification information for identifying the battery (e.g., battery ID) can be stored in the distributed ledger 152. In this case, the ID of a maintenance business such as a 4S store or sharing may be stored in the distributed ledger 152 in association with the battery ID. The certification information may be in any form as long as it is information that can prove that a legitimate diagnostic method was used by a legitimate business and that a legitimate transaction was performed on the diagnostic system platform. The certification information includes both certification information for the business and certification information for the battery.

The processing executed by the ledger management node 10 can be realized by a smart contract. That is, when the degree of deterioration of the battery is diagnosed using a pre-registered diagnostic method and a transaction is made under the pre-registered buying and selling conditions, a flag for regular appraisal is set for the battery ID and business ID (an identification code that identifies the business) without the involvement of an intermediary, and a program is automatically executed to, for example, add 1 to the number of certified batteries for that battery ID and the number of certified businesses for that business ID.

The certification information may include a certification level (e.g., levels 1 to 5). In the case of certification information for a business, the certification level may be determined according to the number of processes (events such as diagnosis and buying and selling) by the business (the number of certifications) or the number of certifications within a certain period. In the case of certification information for a battery, the certification level may be determined according to the certification level (e.g., an average value) of one or more businesses that handled the battery. In addition, the certification level of a battery may be higher for a battery diagnosed by multiple diagnostic methods than for a battery diagnosed by one diagnostic method. In addition, the certification level of a battery diagnosed by a first diagnostic method based on full charging and discharging may be higher than for a battery diagnosed by a simple second diagnostic method. This allows the reliability of the battery being traded to be reflected. In addition, the reliability of the businesses that are members of the diagnostic system platform may be reflected. Regarding the certification level for a battery, for example, if the battery is recycled through a legitimate (certified) 4S store, a sharing business, a refurbishment/dismantling business, a reuse operation manager, or a recycling business, points are added according to the processing by each business, and if some of the businesses are not legitimate, points can be set not to be added. The certification level assigned to each battery ID is tallied as the certification level of the automobile manufacturer or battery manufacturer, for example.

Figure 21 is a flow diagram showing an example of processing between the detailed diagnosis site terminal 40 and the distributed ledger system. Since the "refurbishment and dismantling business" uses the detailed diagnosis site terminal 40, the following explanation will be centered on the detailed diagnosis site terminal 40. The processing of S31 to S41 will be explained below.

S31: A battery ID is input to the detailed diagnosis site terminal 40. Here, the battery ID of the battery pack ID: 002 that was removed from the vehicle and is to be repaired and reconditioned is input.

S32: The detailed diagnosis site terminal 40 sends a battery information request and a diagnostic information request for the input battery ID to the distributed ledger system.

S33: The distributed ledger system sends a battery information request to the battery information server 110 via the ledger management node 10, and obtains battery information related to the battery ID from the battery information server 110.

S34: The distributed ledger system sends a diagnostic information request to the diagnostic information server 120 via the ledger management node 10, and obtains diagnostic information related to the battery ID from the diagnostic information server 120.

S35: The distributed ledger system notifies the detailed diagnosis site terminal 40 of the acquired battery information and diagnostic information.

S36: The detailed diagnosis site terminal 40 diagnoses the condition of the battery pack that is the target of repair and refurbishment (refurbishment, etc.).

S37: The detailed diagnosis field terminal 40 performs cell diagnosis by dividing the target battery pack into cells and then measuring the voltage, current, temperature, SOC, etc. for each cell. Here, good cells can be classified from bad cells.

S38: The refurbishment/dismantling business repairs and recycles the battery, and inputs information that identifies the details of the repair and recycle into the detailed diagnosis site terminal 40.

S39: The detailed diagnosis site terminal 40 sends a request to record battery information (e.g., replaced cells, replaced modules, etc.) of the repaired and refurbished battery to the distributed ledger system. Although not shown, the refurbishment and dismantling business may diagnose the repaired and refurbished battery using, for example, a first diagnosis method based on a discharge current integration method during full charging and discharging, and send the diagnosis results to the diagnosis information server 120 to record them in the diagnosis DB.

S40: The distributed ledger system records the battery information of the repaired and refurbished battery in the distributed ledger 152. At this point, the information shown in FIG. 15 is also recorded in the diagnostic DB or a specified DB.

S41: The distributed ledger system generates certification information (certification date, regular appraisal flag, etc.) and records it in the distributed ledger 152.

The certification information can include a certification level (e.g., levels 1 to 5). For example, the certification level can be determined based on the number of processes (repair and refurbishment cases) handled by the business (certification number) or the number of certifications within a certain period of time.

As in the case of Figure 20, the processing performed by the ledger management node 10 can be realized by a smart contract.

As described above, the detailed diagnosis site terminal 40 may obtain battery information about the battery removed from the vehicle from the battery information server 110 (battery DB), obtain the degree of deterioration of the battery from the diagnosis information server 120 (diagnosis DB), and determine at least one of the possibility of repair and restoration and the diagnosis method based on the obtained battery information and degree of deterioration.

The detailed diagnosis site terminal 40 may also use a required diagnostic method to diagnose the degree of deterioration of each of the multiple cells contained in the battery to be repaired and reconditioned, and record the diagnostic results in the diagnostic information server 120 (diagnosis DB).

The detailed diagnosis site terminal 40 may also record battery information about the repaired and reconditioned battery in the battery information server 110 (battery DB).

When a battery is repaired and reconditioned, the name of the refurbishment/dismantling business that performed the repair and conditioning (business ID), the details of the repair and conditioning (e.g., the number of cells replaced, cell IDs, the number of modules replaced, module IDs, etc.), and the diagnosis results after the repair and conditioning (final diagnosis information) may be stored in the distributed ledger system in association with the battery ID of the battery.

Figure 22 is a flow diagram showing an example of processing between the battery management terminal 60 and the distributed ledger system. Since the "reuse operation manager" uses the battery management terminal 60, the following explanation will be centered on the battery management terminal 60. The processing of S51 to S61 will be explained below.

S51: The battery management terminal 60 sends a battery information request for the reused battery to the distributed ledger system.

S52: The distributed ledger system sends a battery information request to the battery information server 110 via the ledger management node 10, and obtains battery information of the reused battery from the battery information server 110.

S53: The distributed ledger system notifies the battery management terminal 60 of the acquired battery information.

S54: The battery management terminal 60 sends a request for the operational status of the reused battery to the distributed ledger system.

S55: The distributed ledger system sends an operation status request to the operation information server 130 via the ledger management node 10, and obtains the operation status of the reused battery from the operation information server 130.

S56: The distributed ledger system notifies the battery management terminal 60 of the acquired operational status.

S57: The battery management terminal 60 performs diagnosis of the reused battery. Here, the diagnosis results can be obtained from a diagnostic device that diagnoses reused batteries installed for stationary use in the power company's power supply equipment. In addition, the diagnostic device can use an appropriate diagnostic method depending on the battery information of the reused battery.

S58: The battery management terminal 60 sends a request to record the diagnosis results to the distributed ledger system.

S59: The distributed ledger system records the diagnostic results of the reused battery in the distributed ledger 152. At this point, the information shown in FIG. 19 is also recorded in the operational DB or a specified DB.

S60: The distributed ledger system generates certification information (certification date, regular appraisal flag, etc.) and records it in the distributed ledger 152.

The certification information can include a certification level (e.g., levels 1 to 5). For example, the reuse operation manager can determine the certification level based on the number of reused batteries, the period of operation performance, the number of reuse businesses, the number of certifications, and the number of certifications within a certain period of time.

S61: The battery management terminal 60 reports the operational status and diagnostic results of the reused battery to the insurance company at the required time.

As in the case of Figure 20, the processing performed by the ledger management node 10 can be realized by a smart contract.

As described above, the battery management terminal 60 may obtain battery information on reused batteries that are repurposed vehicle batteries from the battery information server 110 (battery DB), and may record the degree of deterioration of the diagnosed reused battery in the diagnostic information server 120 (diagnosis DB) using a diagnostic method according to the obtained battery information.

The battery management terminal 60 may also obtain the operational status of the reused battery from the operational information server 130 (operation DB) and the degree of deterioration of the reused battery from the diagnostic information server 120 (diagnostic DB), and output the obtained operational status and degree of deterioration to the insurance company's terminal device.

Figure 23 is a flow diagram showing an example of processing between the detailed diagnosis management terminal 50 and the distributed ledger system. Since the "recycling company" uses the detailed diagnosis management terminal 50, the following explanation will be centered on the detailed diagnosis management terminal 50. The processing of S71 to S80 will be explained below.

S71: Assume that a large number of batteries to be discarded (in the figure, battery IDs: 00X, 00Y, 00Z, ...) are brought to a recycling company. The detailed diagnosis management terminal 50 sends a battery information request for the batteries to be discarded to the distributed ledger system.

S72: The distributed ledger system sends a battery information request to the battery information server 110 via the ledger management node 10, and obtains battery information of the battery to be disposed of from the battery information server 110.

S73: The distributed ledger system notifies the detailed diagnosis management terminal 50 of the acquired battery information.

S74: The detailed diagnosis management terminal 50 measures the battery to be disposed of. Here, the remaining capacity of the battery is measured. If there is remaining capacity, the battery can be completely discharged at a specified discharge current value. This makes it possible to prevent electric shock when disassembling the battery for disposal.

S75: The detailed diagnosis management terminal 50 determines the rare metal content of a large number of batteries to be discarded based on the battery information of the batteries to be discarded (e.g., the rare metal content contained in the batteries based on the composition information at the time of the battery's manufacture).

S76: The detailed diagnosis management terminal 50 separates the discarded batteries. Here, a program for separating the discarded batteries is pre-installed, and the separation of the discarded batteries can be assisted by classifying batteries with similar components into the same group according to the amount of rare metal content in each battery to be discarded.

S77: The recycling company will carry out refining.

S78: The detailed diagnosis management terminal 50 sends a request to record the completion of recycling to the distributed ledger system.

S79: The distributed ledger system records the completion of recycling in the distributed ledger 152. At this point, the information shown in FIG. 17 is also recorded in the recycling DB or a specified DB.

S80: The distributed ledger system generates certification information (certification date, regular appraisal flag, etc.) and records it in the distributed ledger 152.

The certification information can include a certification level (e.g., levels 1 to 5). For example, the certification level can be determined by the recycling business operator's recycled weight (recycled and waste volume), recycling rate, number of certifications, and number of certifications within a certain period of time.

As in the case of Figure 20, the processing performed by the ledger management node 10 can be realized by a smart contract.

As described above, the detailed diagnosis management terminal 50 may record the contents of the recycling process according to the rare metal components contained in the discarded waste batteries in the recycling server 150 (recycle DB).

The detailed diagnosis management terminal 50 may also provide the details of the recycling process to the battery manufacturer or vehicle manufacturer.

When a battery is recycled, the details of the recycling process carried out by the recycler may be stored in the distributed ledger system in association with the battery ID of the battery.

Figure 24 is a flow diagram showing an example of processing between the diagnostic management terminal 20 and the distributed ledger system. Since the "manufacturer and sharing business operator" uses the diagnostic management terminal 20, the following explanation will be centered on the diagnostic management terminal 20. The processing from S91 to S99 will be explained below.

S91: The diagnostic management terminal 20 sends a request for battery information, a request for diagnostic information, an operational status request, and a usage history request to the distributed ledger system.

S92: The distributed ledger system sends a battery information request to the battery information server 110 via the ledger management node 10, and obtains battery information from the battery information server 110. The distributed ledger system sends a diagnostic information request to the diagnostic information server 120 via the ledger management node 10, and obtains diagnostic information from the diagnostic information server 120. The distributed ledger system sends an operation status request to the operation information server 130 via the ledger management node 10, and obtains the battery operation status from the operation information server 130. The distributed ledger system sends a usage history request to the recycle server 150 via the ledger management node 10, and obtains the battery usage history from the recycle server 150. Note that although the battery usage history is recorded in the recycle DB here, it may be recorded in another DB.

S93: The distributed ledger system notifies the diagnostic management terminal 20 of the battery's battery information, diagnostic information, operational status, and usage history.

S94: The diagnostic management terminal 20 identifies the battery's operational performance.

S95: The diagnostic management terminal 20 calculates the average battery life and recycling rate based on the identified operational performance.

S96: The diagnostic management terminal 20 identifies the optimal operating method for the battery based on the calculated average lifespan, operating history, diagnostic information, etc. Here, the optimal operating method may differ depending on the type of battery, and even for the same type of battery, it may differ depending on the battery operating plan (e.g., daily charging/discharging plan, load pattern such as charging/discharging amount, etc.).

S97: The diagnostic management terminal 20 provides the battery performance data and optimal operating methods to the distributed ledger system.

S98: The distributed ledger system records the provided information in the distributed ledger 152.

S99: The distributed ledger system generates certification information (certification date, regular appraisal flag, etc.) and records it in the distributed ledger 152.

The certification information can include a certification level (e.g., levels 1 to 5). For example, the certification level can be determined based on the number and amount of information provided by manufacturers and sharing businesses, the recycling rate, the number of certifications, and the number of certifications within a certain period of time.

As in the case of Figure 20, the processing performed by the ledger management node 10 can be realized by a smart contract.

According to this embodiment, battery information, diagnostic information, operating status, and usage history of various batteries are shared under a common platform, making it possible to propose optimal operating methods to customers not only for the company's own batteries but also for batteries from other companies. In addition, automobile manufacturers and battery manufacturers that join the diagnostic system platform will be highly evaluated in the market and will be able to have an advantage if they increase the number of certifications for their own company and for the batteries they manufacture and sell.

Next, we will explain examples of how information provided by the distributed ledger system is displayed.

Figure 25 is a schematic diagram showing an example of a business evaluation information display screen 311. Here, the business may be any type of business that joins the diagnostic system platform, such as the aforementioned battery or automobile manufacturers/sharing businesses, 4S stores/sharing maintenance businesses, refurbishment/dismantling businesses, recycling businesses, reuse operation managers, or reuse battery users.

On the evaluation information display screen 311, the business operator can input the business type and business name. The business type and business name can be input directly, or a list can be displayed and selected from the list. Operating the "Confirm" icon displays the evaluation information of the entered business operator. Evaluation information includes, for example, overall evaluation, business period, total number of certifications, number of certifications in the past year, etc., but is not limited to these. The overall evaluation is expressed, for example, on a five-point scale, and the evaluation value (4.5 points in the example shown) can be displayed as the number of stars. Operating the "Details" icon can display the certification details as shown below.

Figure 26 is a schematic diagram showing an example of the certification information display screen 312. The certification information can be displayed in list format, including the certification date and the certification details. The display order can be changed as appropriate, such as by date. The certification details can be specific details of an event (e.g., diagnosis, buying and selling, repair and refurbishment, reuse, recycling, etc.). When there is a large amount of certification information, the filtering conditions are a field for setting conditions such as the most recent 50 cases or a date range, and the certification information can be narrowed down by setting the filtering conditions and operating the "Execute" icon.

Figure 27 is a schematic diagram showing an example of the evaluation information search screen 313. In the example shown in the figure, search conditions can be set such as business type (business operators such as manufacturers and sharing, maintenance businesses such as 4S stores and sharing, refurbishment and dismantling businesses, recycling businesses, reuse operation managers, reuse battery users), overall evaluation of OO or more, and number of certifications of OO or more. Note that the search conditions are not limited to the example shown in the figure. By setting the search conditions and operating the "Search" icon, it is possible to display information such as the evaluation information exemplified in Figure 25.

Figure 28 is a schematic diagram showing an example of the evaluation information ranking screen 314. On the evaluation information ranking screen 314, the overall evaluation, number of certifications, and name of the business are displayed in a list format for each business type in descending order of overall evaluation. In addition, the user can check the detailed evaluation information of the selected business by selecting the desired business from the displayed businesses (by checking the selection box) and operating the "Details" icon.

This makes it easy to see which businesses by business type have received high ratings. Also, from the business perspective, the public recognition of their own company's ratings provides motivation for them to improve their own services. Also, because it is possible to compare with other companies in the same industry, it is easy to determine whether your company's position is better or worse than that of other companies, and this can be used as reference information for promoting or changing your own services.

Figure 29 is a schematic diagram showing an example of a battery search screen 315. In the battery search screen 315, the user can input all or part of the automobile manufacturer, model, year, and battery manufacturer as search conditions. In addition, the user can input the current usage of the battery as a search condition. The usage can be selected from among driving use, stationary use, and recycled. Driving use refers to a situation in which a new battery is installed in a vehicle, and then removed from the vehicle and reused in another vehicle (e.g., a vehicle that may have a short driving range). Stationary use refers to a situation in which a new battery is installed in a vehicle, and then removed from the vehicle and reused in a stationary power storage device, etc. In addition, the price range of the battery can be input as a search condition. If the battery is distributed on the market as a single unit, the battery can be searched for by price range. By inputting the search conditions and operating the "search" icon, the following battery usage information can be displayed.

Figure 30 is a schematic diagram showing an example of a battery usage information screen 316. In the battery usage information screen 316, usage status, price, etc. are displayed in association with the battery ID. The example in Figure 30 shows the case where "recycled" is selected as the battery usage type, and all usage statuses up to recycling are displayed. In addition, by selecting the desired battery ID from the displayed battery IDs (by checking the selection box) and operating the "select" icon, history information related to the selected battery ID can be displayed as follows.

Figure 31 is a schematic diagram showing a first example of a battery history information screen 317. In the battery history information screen 317, the battery manufacturer, battery model number, battery rating, and battery history information are displayed for each battery ID. The rating can be expressed on a five-point scale, for example, and the rating value (4.5 points in the example shown) can be displayed as the number of stars. The history information displays the date, company, event, and usage type (driving use or stationary use) in chronological order. For example, manufacturing by a battery manufacturer, diagnosis and sales by a maintenance company, restoration and sales by a refurbishment/dismantling company, diagnosis by a reuse company, recycling by a recycling company, etc. are displayed in a list. The history information is recorded in the history DB by the history information server 170.

The vendors displayed in the history information in Figure 31 are properly registered businesses, and it can be confirmed that proper processing (each process shown in the event) has been carried out by a properly registered business, and it can be proven that they have been platform certified in association with the battery ID.

As described above, when at least one of diagnosis of the degree of deterioration of an automotive battery from the start of use to disposal, operation, trading, reuse, repair and refurbishment, and recycling is performed by a pre-registered business operator, certification information associated with identification information that identifies the battery may be stored in the distributed ledger system.

Figure 32 is a schematic diagram showing a second example of the battery history information screen 318. In the example of Figure 32, the history information of two batteries (battery ID: XXXX and battery ID: OOOO) is displayed. The user can select the two batteries as appropriate. Battery ID: XXXX has undergone predetermined processing by each manufacturer, and history information from the time of battery manufacture to the present is recorded in a traceable state. Assume that each manufacturer and each process has been certified. Since the battery has been properly processed by a proper manufacturer and the usage history up to the present is clear, the evaluation is relatively high, for example, 4.5. On the other hand, battery ID: OOOO only has history information up to a certain point in the past, and cannot be traced after that point, so the evaluation of the battery is relatively low, for example, 2.5.

In this way, by differentiating between batteries whose history information has been recorded up to the present time and batteries whose history information is partially or completely missing, people are motivated to have proper processing done by proper dealers and ensure that they are traced. This promotes the distribution of proper batteries and increases the market value of batteries.

The information processing method of this embodiment acquires battery-related information about an in-vehicle battery, diagnoses the degree of deterioration of the battery using the acquired battery-related information and multiple diagnostic methods for diagnosing the degree of deterioration of the battery, and outputs at least one of the diagnosed degree of deterioration and the trading price of the battery according to the degree of deterioration.

The information processing method of this embodiment performs a predetermined calculation for each degree of deterioration diagnosed using the multiple diagnostic methods to diagnose the degree of deterioration of the battery.

The information processing method of this embodiment uses a calculation method that defines the relationship between the degree of battery deterioration and the trading price, and outputs the trading price of the battery according to the diagnosed degree of deterioration.

The information processing method of this embodiment collects the actual transaction prices of batteries whose degree of degradation has been diagnosed, and determines the calculation method based on the collected transaction prices.

The information processing method of this embodiment acquires battery-related information about a battery to be repaired and refurbished or a repaired and refurbished battery, diagnoses the degree of battery deterioration using the acquired battery-related information and a first diagnostic method based on a discharge current integration method during complete charging and discharging, and records the diagnosis results.

The information processing method of this embodiment continually registers a second diagnostic method that has a shorter diagnostic time than the first diagnostic method, and diagnoses the degree of battery deterioration using the registered second diagnostic method.

In the information processing method of this embodiment, when a diagnosis of the degree of deterioration of an on-board battery is performed using a pre-registered diagnostic method and a transaction is performed at the transaction price, certification information associated with identification information that identifies the battery is stored in the distributed ledger system.

The information processing method of this embodiment displays a method for diagnosing the degree of deterioration of a battery and the results of diagnosing the degree of deterioration using the method.

The information processing method of this embodiment displays the diagnosis results of the battery's deterioration level and the transaction price.

The information processing method of this embodiment displays the contract terms regarding the battery transaction and accepts the possibility of trading the battery.

The information processing device of this embodiment includes an acquisition unit that acquires battery-related information about an in-vehicle battery, a diagnosis unit that diagnoses the degree of deterioration of the battery using the acquired battery-related information and multiple diagnosis methods for diagnosing the degree of deterioration of the battery, and an output unit that outputs at least one of the diagnosed degree of deterioration and the trading price of the battery according to the degree of deterioration.

The information processing method of this embodiment acquires battery-related information about an in-vehicle battery from a battery DB, uses a diagnostic method for diagnosing the degree of deterioration of the battery according to the acquired battery-related information, records the diagnosed degree of deterioration of the battery in the diagnostic DB, and presents the trading price of the battery whose degree of deterioration has been diagnosed using a calculation method that defines the relationship between the degree of deterioration of the battery and the trading price.

The information processing method of this embodiment records the actual transaction price of a battery whose degree of degradation has been diagnosed in a transaction DB, and determines the calculation method based on the transaction price recorded in the transaction DB.

The information processing method of this embodiment obtains battery-related information about a battery removed from a vehicle from the battery DB, obtains the degree of deterioration of the battery from the diagnostic DB, and determines at least one of whether repair and restoration are possible and the diagnostic method based on the obtained battery-related information and the degree of deterioration.

The information processing method of this embodiment uses a required diagnostic method to diagnose the degree of deterioration of each of the multiple cells contained in the battery to be repaired and refurbished, and records the diagnostic results in the diagnostic DB.

The information processing method of this embodiment records battery-related information about repaired and refurbished batteries in the battery DB.

The information processing method of this embodiment acquires battery-related information about a reused battery that is a reused vehicle battery from the battery DB, and records the degree of deterioration of the diagnosed reused battery in the diagnostic DB using the diagnostic method according to the acquired battery-related information.

The information processing method of this embodiment obtains the operational status of the reused battery from the operation DB, obtains the degree of deterioration of the reused battery from the diagnostic DB, and provides the obtained operational status and degree of deterioration to the insurance company.

The information processing method of this embodiment records the details of the recycling process according to the rare metal components contained in the discarded batteries in a recycling DB.

The information processing method of this embodiment provides the details of the recycling process to the battery manufacturer or vehicle manufacturer.

In the information processing method of this embodiment, when at least one of diagnosis of the degree of deterioration of an in-vehicle battery from the start of use to disposal, operation, trading, reuse, repair and refurbishment, and recycling is performed by a pre-registered business operator, certification information associated with identification information that identifies the battery is stored in the distributed ledger system.

The information processing device of this embodiment includes an acquisition unit that acquires battery-related information about an in-vehicle battery from a battery DB, a diagnostic DB that records the degree of deterioration of the diagnosed battery using a diagnostic method for diagnosing the degree of deterioration of the battery according to the acquired battery-related information, and a presentation unit that presents the transaction price of the battery whose degree of deterioration has been diagnosed using a calculation method that defines the relationship between the degree of deterioration of the battery and the transaction price.

The information processing system of this embodiment includes a maintenance business terminal device, a refurbishment business terminal device, a recycling business terminal device, and a server, and the server diagnoses the degree of deterioration of the battery using a diagnostic method for diagnosing the degree of deterioration of the battery according to the battery-related information input from the maintenance business terminal device and records the diagnostic result in the diagnostic DB, diagnoses the degree of deterioration of each of the multiple cells contained in the battery to be repaired and remanufactured using the battery-related information input from the refurbishment business terminal device and a required diagnostic method and records the diagnostic result in the diagnostic DB, and records the contents of the recycling process according to the rare metal components contained in the discarded waste battery input from the recycling business terminal device in the recycling DB, and the maintenance business terminal device, refurbishment business terminal device, and recycling business terminal device are able to access the diagnostic DB and the recycling DB.

LIST OF SYMBOLS 1 Network 10 Ledger management node 11 Communication unit 12 Ledger information generation unit 13 Ledger recording unit 14 Ledger information reference unit 15 Database 151 Node list 152 Distributed ledger 20 Diagnosis management terminal 21 Control unit 22 Communication unit 23 Memory unit 24 Display panel 25 Operation unit 26 Information provision unit 30 Simple diagnosis field terminal 31 Control unit 32 Communication unit 33 Memory unit 34 Display panel 35 Operation unit 36 Interface unit 40 Detailed diagnosis field terminal 41 Control unit 42 Communication unit 43 Memory unit 44 Battery pack diagnosis unit 45 Display panel 46 Operation unit 47 Cell diagnosis unit 50 Detailed diagnosis management terminal 51 Control unit 52 Communication unit 53 Memory unit 54 Display panel 55 Operation unit 56 Interface unit 60 Battery management terminal 61 Control unit 62 Communication unit 63 Memory unit 64 Display panel 65 Operation unit 66 Information providing unit 70 Sales management terminal 110 Battery information server 120 Diagnostic information server 121 Control unit 122 Communication unit 123 Memory unit 124 Switching unit 125 Registration unit 126 Diagnosis unit 127 Diagnostic algorithm D1
128 Diagnostic Algorithm D2
129 Diagnostic Algorithm D3
135 Charging/discharging algorithm 130 Operation information server 140 Sales information server 150 Recycle server 170 History information server 200 Ledger information 201 Time stamp 202 Hash value of previous ledger information 203 Recorded information 301 Battery information input mode 302 Diagnosis result presentation mode 303 Battery evaluation result mode 311 Evaluation information display screen 312 Certification information display screen 313 Evaluation information search screen 314 Evaluation information ranking screen 315 Battery search screen 316 Battery usage information screen 317 History information screen

Claims (5)

A battery management terminal acquires battery information, including at least a diagnostic date , a diagnostic method , and a diagnostic result during reuse, from a battery information server, regarding a reused battery obtained by reusing an in-vehicle battery;
the battery management terminal selectively switches a diagnostic method used for diagnosing deterioration of the reused battery based on the acquired battery information;
The battery management terminal diagnoses the degree of deterioration of the reused battery using the switched diagnosis method.
Information processing methods. The battery management terminal transmits the degree of deterioration of the reused battery diagnosed using the diagnosis method to a diagnosis information server;
The diagnostic information server records the degree of deterioration in a diagnostic DB.
The information processing method according to claim 1 . an acquisition unit that acquires battery information, which is related to a reused battery obtained by reusing an in-vehicle battery, from a battery information server, the battery information including at least a diagnosis date , a diagnosis method , and a diagnosis result during reuse;
A switching unit that selectively switches a diagnostic method used for diagnosing deterioration of the reused battery based on the acquired battery information;
and a diagnostic unit that diagnoses the degree of deterioration of the reused battery using the switched diagnostic method.
Information processing device. a transmission unit that transmits the degree of deterioration of the reused battery diagnosed by using the diagnosis method to a diagnosis information server;
The information processing device according to claim 3 . The information processing device according to claim 3 or 4, a battery information server, and a diagnostic information server,
The information processing device includes:
Obtaining battery information from the battery information server, the battery information including at least a diagnostic date , a diagnostic method , and a diagnostic result during reuse, regarding a reused battery obtained by reusing an in-vehicle battery;
transmitting to the diagnostic information server a degree of deterioration of the reused battery diagnosed using the diagnostic method selectively switched based on the acquired battery information;
Information processing system.

Images