JP7109152B2 - Electric vehicle charging system, electric vehicle charging device and electric vehicle charging method - Google Patents

Description

The present disclosure relates to an electric vehicle charging system, an electric vehicle charging device, and an electric vehicle charging method.

Conventionally, with the spread of electric vehicles powered by electric motors, electric vehicle charging devices for charging driving batteries mounted on electric vehicles in homes, store parking lots, etc. (for example, patent Reference 1). According to this type of charging device, a user (a driver or the like) can, for example, connect a connector of a charging cable connected to a charging outlet in a house or a charging cable provided in a charging station located in a store to an electrical outlet. By connecting to the charging port of the automobile, the battery can be easily charged.

JP 2010-115038 A

By the way, in order to improve the convenience of electric vehicle users, it is necessary to enable charging in more places. there is

On the other hand, as one of the candidates for the installation location of the charging device, the vicinity of the roadway where the automobile runs (for example, the shoulder of the road, the planted belt, the bicycle path, the sidewalk, etc.) can be considered, but since the space around the roadway is limited, It is not easy to secure a lot of installation space for charging devices. Furthermore, when installing a charging device, it is necessary to secure power necessary for charging, so it is desirable that power can be easily secured at the installation location.

The present disclosure has been devised in view of such problems of the conventional technology, and an electric vehicle charging apparatus and an electric vehicle charging method that can easily secure an installation space and electric power necessary for charging around a roadway. The main purpose is to provide

The electric vehicle charging system of the present disclosure includes a plurality of electric vehicle charging apparatuses arranged at predetermined intervals along a high-voltage distribution line and a road, and various types of electric vehicle charging between the plurality of electric vehicle charging apparatuses. and a server device that transmits and receives information, and each of the electric vehicle charging devices includes at least one of a multi-circuit switch, a ground transformer, and a low-voltage branch device, and is installed on the ground along with the removal of utility poles. It includes ground power distribution equipment to be installed and a transformer that converts high-voltage power supplied by the high-voltage distribution line into low-voltage power that can charge a battery mounted on an electric vehicle, and uses the low-voltage power. and a housing for housing the charger and the ground power distribution equipment.

Advantageous Effects of Invention According to the present disclosure, it is possible to easily secure an installation space and electric power necessary for charging in the vicinity of a roadway.

1 is an overall configuration diagram of a charging system according to an embodiment Perspective view showing the EV charging device (newly installed) shown in FIG. 1 and its surroundings A perspective view showing the EV charging device (additional) shown in FIG. 1 and its surroundings. A diagram showing a more detailed configuration of the EV charging device shown in FIGS. 2A and 2B Block diagram showing a schematic configuration of the signage device shown in FIGS. 2A and 2B FIG. 2 is a block diagram showing a schematic configuration of the server device shown in FIG. 1; Flow chart showing an example of operation of the EV charging device shown in FIG. Block diagram showing a first modification of the EV charging device shown in FIG. Flow chart showing an example of the operation of the EV charging device shown in FIG. Block diagram showing a second modification of the EV charging device shown in FIG.

A first invention made to solve the above problems is a charger for charging a battery mounted on an electric vehicle, a ground power distribution device for relaying power supplied from an underground distribution line to the ground, and a roadway. and a housing that is installed in the periphery and accommodates the charger and the ground power distribution equipment, wherein the charger charges the battery using power supplied from the distribution line.

According to this, by housing the charger and the ground power distribution device in a shared housing, it is possible to easily secure the installation space and the electric power necessary for charging around the roadway.

In a second aspect of the invention, the ground power distribution equipment includes at least one of a multi-circuit switch, a ground transformer, and a low-voltage branching device.

According to this, at least one of a multi-circuit switch, a ground transformer, and a low-voltage branch device, which are installed on the ground due to the elimination of utility poles (wires underground), shares the housing of the charger. Therefore, it is possible to easily secure the installation space and the electric power necessary for charging in the vicinity of the roadway.

In a third invention, the charger has a transformer that converts the voltage of the power supplied from the distribution line to charge the battery.

According to this, it becomes possible to easily secure the electric power (for example, 200 V) necessary for charging by using the electric power (for example, 6600 V) supplied to the ground from the underground high-voltage distribution line.

In a fourth invention, the charger charges the battery using power supplied from the distribution line to the ground power distribution equipment.

According to this, with a simple configuration, it is possible to easily secure the power required for charging by using the power supplied from the underground distribution line to the ground.

In a fifth aspect of the invention, the charger has a communication unit capable of communicating with an external device via a communication network, and a control unit that controls charging of the battery, and the control unit controls charging of the external device. It is characterized by judging whether the electric power supply to the electric vehicle is appropriate or not based on the electric power supply and demand balance information in a predetermined area acquired through communication with the device.

According to this, it is possible to appropriately charge the electric vehicle according to the power supply and demand balance (for example, the presence or absence of surplus power, etc.) in the predetermined area. For example, in a charger, when the power supply and demand in a predetermined area where the charger is installed becomes tight (unsuitable for power supply), it is possible to stop charging or raise the charging fee. When the supply and demand are not tight (suitable for power supply), charging can be started (or promoted), the charging fee can be reduced, and the like.

In a sixth aspect of the invention, the ground power distribution equipment is a low-voltage branch device, the charger has a control unit for controlling charging of the battery, and the control unit obtains from the low-voltage branch device It is characterized in that the propriety of power supply to the electric vehicle is determined based on the obtained information on the power distribution status.

According to this, it is possible to appropriately charge the electric vehicle according to the power distribution status by the low-voltage branching device (that is, the status of the power distributed from the low-voltage branching device to each power distribution target (house, etc.)). Become. For example, in a charger, when the power demand to be distributed by the low-voltage branch device is relatively high (unsuitable for power supply), it is possible to stop charging or raise the charging fee. is relatively low (suitable for power supply), charging can be initiated (or promoted), charging fees can be reduced, and the like.

A seventh aspect of the invention further comprises a signage device attached to the housing and supplied with power from the charger or the ground power distribution equipment, wherein the signage device provides information relating to charging performed by the charger. is displayed.

According to this, in the vicinity of the roadway, it is possible to easily secure installation space for a signage for displaying information about charging and electric power necessary for driving the signage.

An eighth invention is characterized in that the charging information includes at least one of charging time, charging amount, charging fee, and charging fee discount information.

According to this, a user (for example, a driver of an electric vehicle) using the charger can easily grasp the charging status.

A ninth aspect of the invention is characterized in that the housing is arranged adjacent to an on-street parking space in which the electric vehicle can be parked.

According to this, it is possible to charge the electric vehicle while it is parked in the on-street parking space around the roadway.

A tenth invention is a charging method using the electric vehicle charging device according to the first invention, wherein the charger, based on the power supply and demand balance information in a predetermined area acquired by communication with an external device, It is characterized by determining whether or not the electric power supply to the electric vehicle is appropriate.

According to this, it is possible to appropriately charge the electric vehicle according to the power supply and demand balance (for example, the presence or absence of surplus power, etc.) in the predetermined area.

An eleventh invention is a charging method using the electric vehicle charging apparatus according to the first invention, wherein the ground power distribution device is a low-voltage branch device, and the charger is obtained from the low-voltage branch device. It is characterized in that the suitability of power supply to the electric vehicle is determined based on the information on the power distribution status.

According to this, it is possible to appropriately charge the electric vehicle according to the power distribution status by the low-voltage branching device (that is, the status of the power distributed from the low-voltage branching device to each power distribution target (house, etc.)). Become.

Embodiments of the present disclosure will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a charging system 1 according to the present embodiment, and FIGS. 2A and 2B are perspective views showing the EV charging device 2 shown in FIG. 1 and its surroundings. Here, FIG. 2A shows an example in which the EV charging device 2 is newly installed, and FIG. It is an example of the case where it is provided.

This charging system 1 is a system for charging a battery mounted on an electric vehicle (not shown), and as shown in FIG. 2 and a server device 4 as an external device capable of communicating with the EV charging device 2 via a network 3 .

The network 3 is composed of the Internet or the like, but is not limited to this, and a known communication network can be used as appropriate. The server device 4 can transmit and receive various types of information regarding charging of electric vehicles by communicating with each EV charging device 2 . In addition, the term "electric vehicle" in the present disclosure means a vehicle that can run on roads using at least an electric motor as a drive source, and such electric vehicles include plug-in hybrid cars equipped with internal combustion engines. obtain.

As shown in FIGS. 2A and 2B, the EV charging device 2 can be installed as a road installation around the roadway 11 (here, the sidewalk 12 adjacent to the roadway 11). A box-shaped housing 21 that forms the outer shell of the EV charging device 2 contains a charger 22 that charges the battery mounted on the electric vehicle, and electric power that is supplied from an underground power line (distribution line) 23 to the ground. Ground power distribution equipment 24 to be relayed is accommodated. A signage device 25 for displaying various information is attached to the housing 21 . However, the EV charging device 2 can also be configured without the signage device 25 . In that case, in the example of FIG. 2B, only the charger 22 is added to the existing ground power distribution equipment 24 . A plurality of power lines 23 and a plurality of communication lines 27 are arranged in a utility trench 26 provided in the ground of the sidewalk 12 so as to run parallel to them. These communication lines 27 form part of the network 3 (see FIG. 1). Also, when constructing a network, means such as radio may be used without using underground communication lines.

Such an EV charging device 2 is not limited to a sidewalk but is adjacent to the roadway 11 as long as it is in the vicinity of the roadway 11 on which an electric vehicle can run (at least an area in which electric power can be supplied to a parked electric vehicle). It can also be installed in any area of the road (eg, shoulders, planted strips, bicycle paths, etc.).

The power lines 23 include a high voltage power line 23A that supplies relatively high voltage (here, 6600 V) power and a low voltage power line 23B that supplies relatively low voltage (here, 100 V and 200 V) power.

The material, shape, and size of the housing 21 can be appropriately changed as long as the housing 21 can be installed at least on the ground (here, the sidewalk 12) and can accommodate the charger 22 and the ground power distribution equipment 24. be. By housing the charger 22 and the ground power distribution equipment 24 in the shared housing 21 in this way, it is possible to easily secure the installation space for the EV charging device 2 and the power required for charging around the roadway 11. It has the advantage of being able to

If there is a housing for the existing ground power distribution equipment, at least part of it may be used as a component of the housing 21 (see FIG. 2B, for example). Further, if the housing 21 is at least substantially integrated as a whole, it is not necessary to accommodate the charger 22 and the ground power distribution device 24 in a single accommodation space. For example, the housing 21 has a first accommodation space for the charger 22 and a second accommodation space for the ground power distribution equipment 24 separated from the first accommodation space by a wall. good too.

The charger 22 has the same functions as a known charging stand installed at a so-called charging spot, and in addition to a power meter and the like described later, a charging cable 31 arranged outside the housing 21 and its tip A charging connector 32 and the like are provided. Although not shown, a power supply line used for power supply and a communication line used for communication are arranged in the sheath of the charging cable 31 . A user (such as a driver) of the charging system 1 removes the charging connector 32 from the connector holder provided on the side wall of the EV charging device 2 and connects it to the charging port of the electric vehicle, thereby charging the charging cable 31 . Charging can be performed with a predetermined power (for example, AC200V). Here, the charging cable 31 is set to a length that allows the charging connector 32 to be connected to the charging port of the electric vehicle parked in the on-street parking space 34 defined by the white line frame. This makes it easy to charge the electric vehicle while it is parked around the roadway.

In addition, the charger 22 is electrically connected to the underground power line 23 directly or indirectly via the ground power distribution equipment 24, so that the power supplied from the power line 23 is used to charge the battery of the electric vehicle. It is possible. Furthermore, charger 22 can communicate with server device 4 via network 3 (see FIG. 1) by being connected to communication line 27 .

The ground power distribution equipment 24 may be any equipment capable of relaying power supplied from the underground power line 23 to the ground. preferably include one. These devices were conventionally attached to utility poles, but have been installed on the ground as utility poles have been removed (wires have been placed underground). In that case, the EV charging devices 2 can be installed along the sidewalk 12 on which the power line 23 is laid in the ground so as to be scattered on the ground at intervals of, for example, 20 m to 50 m.

Thus, in the EV charging device 2, at least one of the multi-circuit switch, the ground transformer, and the low-voltage branch device installed on the ground due to the removal of utility poles (underground electric wires) and the charger 22 By sharing the housing, it is possible to easily secure an installation space for the EV charging device 2 and electric power required for charging in the vicinity of the roadway 11 .

The signage device 25 is arranged above the charger 22 and the ground power distribution equipment 24 in the EV charging device 2 and includes a display 35 exposed through an opening in the side wall of the housing 21 . The display 35 consists of a known liquid crystal display, and can display information regarding charging performed by the charger 22 . Also, the display 35 is provided on the sidewalk, and pedestrians and people (drivers, etc.) who get off the electric vehicle being charged can view videos and images displayed on the display 35 . With such a configuration, it is possible to easily secure an installation space for the signage device 25 for displaying information about charging and the electric power necessary to drive the signage device 25 around the roadway.

Note that the display 35 is not limited to a liquid crystal display, and may be another known display device (for example, a projector that displays images on the road or the like). A configuration in which the signage device 25 is attached to the outside of the housing 21 (for example, the upper wall surface) is also possible. Furthermore, in the EV charging device 2, the signage device 25 can be omitted.

3 is a diagram showing a more detailed configuration of the EV charging device 2 shown in FIGS. 2A and 2B, and FIG. 4 is a block diagram showing a schematic configuration of the signage device 25 shown in FIGS. 2A and 2B. be. Here, an example using a ground transformer as the ground power distribution equipment 24 is shown.

The charger 22 is connected to a transformer 41 connected to the underground high voltage power line 23A, and regarding the power transformed by the transformer 41, the amount of power supplied to the charging connector 32 side (that is, the electric vehicle using the EV charging device 2 and a charging controller 43 for controlling the operation of the charger 22 .

The transformer 41 converts the voltage of the power supplied from the high-voltage power line 23A (here, 6600 V) to the voltage for charging the battery of the electric vehicle (here, 200 V). The power converted by the transformer 41 is supplied to the electric vehicle via the power meter 42 and charging cable 31 (power supply line). As a result, the charger 22 can easily secure the power required for charging by using the power supplied to the ground from the underground high voltage power line 23A. Similarly, the transformer 41 converts the voltage of the power from the high-voltage power line 23A into a voltage for driving the signage device 25 (here, 100 V), and sends the converted power to the signage device 25 via the power meter 44. can be supplied to

The charging controller 43 executes a predetermined program stored in a memory (not shown) to connect a processor 51 as a control unit that executes various processes related to charging control to the network 3 ( 1), and a communication interface (I/F) 52 as a communication unit. As will be described in detail later, the charging controller 43 periodically obtains from the server device 4 the power supply and demand balance information in a predetermined area where the EV charging device 2 is located, thereby determining whether or not power is supplied to the electric vehicle. can do.

In addition, the charging controller 43 transmits various information about the electric vehicle to be charged (for example, identification information of the vehicle, travel history, detection information of various sensors in the vehicle, electronic payment settlement, etc.) via the charging cable 31 (communication line). information, membership number, point card number, etc.), and the information is used for charging services by the EV charging device 2 (for example, discounts on charging fees, issuance of various coupons, etc.).

The ground power distribution equipment 24 is a ground transformer (so-called pad-mounted transformer) including a transformer 61 . The transformer 61 converts high-voltage power supplied from the high-voltage power line 23A into low-voltage power (here, 100V, 200V) required on the ground demand side. Transformer 61 is also connected to low-voltage power line 23B.

The signage device 25 can obtain information about charging performed by the charger 22 based on a signal from the charging controller 43 (processor 51 ) and display this information on the display 35 .

Further, as shown in FIG. 4, the signage device 25 is used not only for the display 35 but also for the communication I/F 71 connected to the EV charging device 2 and the network 3 (see FIG. 1) and the display on the display 35. A storage unit 72 including an auxiliary storage device for storing various information and a processor 73 for controlling various operations of the signage device 25 are provided.

Communication I/F 71 receives information about charging transmitted from EV charging device 2 and content distributed from server device 4 . In addition, communication I/F 71 receives information on the charging and instructions on the content display method (display start instruction, display end instruction, etc.) from EV charging device 2 and server device 4, respectively.

The communication I/F 71 is connected to the network 3 via the communication line 27, and the signage device 25 receives content useful for the user from the server device 4 (for example, traffic information, weather information, event information in the surrounding area, crime prevention information, etc.). information, coupon information of nearby stores, etc.) via the communication I/F 71, and display the acquired content on the display 35 together with the information on charging (or instead of the information on charging). is possible. Note that the signage device 25 can be configured to perform wireless communication with the server device 4 via the network 3 without the communication line 27 by including a known wireless device.

In addition, the charging information transmitted from the EV charging device 2 includes at least one of charging time, charging amount, charging fee, and charging fee discount information. As a result, a user (for example, a driver of an electric vehicle) using the charger 22 can easily grasp the charging status.

Referring to FIG. 3 again, processor 51 controls display on display 35 of signage device 25 and communication with external devices. For example, the processor 51 displays the content from the server device 4 on the display 35 when charging by the charger 22 is not being performed, and suspends the display of the content when charging is being performed. (or in some area of the screen where the content is displayed) can display information about charging.

In addition, the processor 51 can measure the charging time, calculate the charging amount, the charging fee, and the discount rate of the charging fee, and can also perform processing related to various services provided to the user of the charger 22 . . For example, the processor 51 determines whether or not the electric vehicle to be charged is eligible for a discount on the charging fee, based on information from the electric vehicle acquired via the charging cable 31 (communication line). be able to.

Each wiring for supplying electric power from the power line 23 to the EV charging device 2 or the ground power distribution equipment 24 and each wiring for transmitting signals (communication data) from the communication line 27 are connected to the lower wall of the housing 21 from underground. is introduced into the housing 21 through the .

FIG. 5 is a block diagram showing a schematic configuration of the server device 4 shown in FIG. 1. As shown in FIG.

The server device 4 includes a storage unit 81 including an auxiliary storage device for appropriately storing content to be displayed on the display 35 and power supply and demand balance information in a predetermined area, a communication I/F 82 connected to the network 3, a server and a processor 83 that controls various operations of the device 4 and operations of each unit in the charging system 1 .

Through communication I/F 82 , processor 83 distributes predetermined content to signage device 25 at preset timing, and transmits power supply and demand balance information in a predetermined area to EV charging device 2 . Processor 83 also transmits instructions (display start instruction, display end instruction, etc.) regarding the display method of the contents to signage device 25 via communication I/F 82 .

Note that the charging system 1 may be configured such that the server device 4 executes part of the processing by the charging controller 43 described above. Also, in charging system 1 , a server that distributes content to signage device 25 and a server that transmits power supply and demand balance information in a predetermined area to EV charging device 2 may be separately provided.

FIG. 6 is a flowchart showing an operation example of the EV charging device 2 shown in FIG.

EV charging device 2 first acquires power supply and demand balance information in a target area (predetermined area including the installation location of EV charging device 2) from server device 4 (ST101). It is determined whether or not the supply and demand of electric power in the area is tight (ST102). This power demand determination can be made based on comparison with a preset power usage threshold.

Therefore, when it is determined that the power supply and demand is not tight (that is, that it is suitable for supplying power to the electric vehicle) (ST102: Yes), the EV charging device 2 performs charging (that is, that the electric vehicle is supplied with power). allow charging) (ST103). In this case, the EV charging device 2 can not only allow charging, but also appropriately execute processing (for example, increasing the discount rate, etc.) for promoting charging.

On the other hand, when it is determined that the power supply and demand is tight (that is, it is not suitable for supplying power to the electric vehicle) (ST102: No), the EV charging device 2 stops charging (that is, (ST104). In this case, instead of stopping charging, the EV charging device 2 performs processing for suppressing charging (e.g., raising the charging fee, limiting the charging time, and setting charging attribute (whether member is registered, etc.). limitation, etc.) can be executed as appropriate.

In this way, the EV charging device 2 can appropriately charge the electric vehicle according to the power supply and demand balance (for example, the presence or absence of surplus power) in a predetermined area.

FIG. 7 is a block diagram showing a first modification of the EV charging device shown in FIG. 3, and FIG. 8 is a flow chart showing an operation example of the EV charging device 2 shown in FIG. Here, an example using a low-voltage branch device as the ground power distribution device 24 is shown. Matters not specifically mentioned below are the same as those of the EV charging device 2 described above.

As shown in FIG. 7, the ground power distribution equipment 24 is a low-voltage branching device with a branching switch 91 . The branch switch 91 distributes the low-voltage (here, 100 V, 200 V) power supplied from the low-voltage power line 23B to each power distribution target (houses, etc.) (not shown) via the power distribution line 92 .

In addition, as will be described below, the charging controller 43 (processor 51) obtains information on the power distribution status from the ground power distribution equipment 24 (the power distribution status monitoring unit in the branch switch 91), thereby enabling power supply to the electric vehicle. The adequacy of supply can be determined.

As shown in FIG. 8, the EV charging device 2 first acquires information on the distribution status of electric power to be distributed from the ground power distribution equipment 24 to each power distribution object (houses, etc.) (ST201), and uses the information on the distribution status. Based on this, it is determined whether or not the power demand of the distribution target is relatively high (ST202). The power demand can be determined based on a comparison with a preset threshold value of the power supply amount to each power distribution target.

Therefore, when it is determined that the power demand is not high (that is, that it is suitable for supplying power to the electric vehicle) (ST202: Yes), the EV charging device 2 performs normal charging (that is, that the electric vehicle is supplied with power). allow charging) (ST203). In this case, the EV charging device 2 not only permits charging, but also appropriately executes processing for promoting charging (for example, increasing the discount rate, making the vehicle free of charge, etc.).

On the other hand, when it is determined that the power supply and demand is high (that is, it is not suitable for supplying power to the electric vehicle) (ST202: No), the EV charging device 2 stops charging (that is, stops charging the electric vehicle). prohibited) (ST204). In this case, instead of stopping charging, the EV charging device 2 performs processing for suppressing charging (e.g., raising the charging fee, limiting the charging time, and changing charging attributes (such as whether or not the user is registered as a member). limitation, etc.) can be executed as appropriate.

In this way, the EV charging device 2 appropriately charges the electric vehicle according to the distribution status of the low-voltage branch device (that is, the status of the power distributed from the low-voltage branch device to each power distribution target (house, etc.)). It can be carried out.

FIG. 9 is a block diagram showing a second modification of the EV charging device 2 shown in FIG. Matters not particularly mentioned below are the same as those of the EV charging device 2 (including the first modified example) described above.

As shown in FIG. 9, the ground power distribution equipment 24 is a low-voltage branching device with a branching switch 91 . Here, branch switch 91 can supply low-voltage (100 V, 200 V) power to EV charging device 2 and signage device 25 via power supply lines 95 and 96, respectively. Different from the case.

With such a configuration, in the EV charging device 2 according to the second modification, the charger 22 does not need to be provided with a transformer, and the simple configuration utilizes electric power supplied from the underground distribution line to the ground. can easily secure the power required for charging.

As described above, the present disclosure has been described based on specific embodiments, but these embodiments are merely examples, and the present disclosure is not limited by these embodiments. For example, the external device is not limited to a server device, and may be other information equipment capable of performing similar functions. Also, it is not essential that the EV charging device 2 is connected to the network 3 . For example, the EV charging device 2 may be of a stand-alone type, and the EV charging device 2 may be provided with a control unit capable of performing the same functions as the server device 4 . It should be noted that not all of the constituent elements of the electric vehicle charging device and the electric vehicle charging method according to the present disclosure shown in the above embodiments are necessarily essential, and at least they can be appropriately selected as long as they do not depart from the scope of the present invention. is possible.

An electric vehicle charging device and an electric vehicle charging method according to the present disclosure make it possible to easily secure an installation space and electric power necessary for charging in the vicinity of a roadway, and the electric vehicle charging device and the electric vehicle installed in the vicinity of the roadway. It is useful as a charging method and the like.

1: charging system 2: EV charging device 3: network 4: server device (external device)
11 : Roadway 12 : Sidewalk 21 : Housing 22 : Charger 23 : Power line 23A : High voltage power line 23B : Low voltage power line 24 : Ground power distribution equipment 25 : Signage device 26 : Common groove 27 : Communication line 31 : Charging cable 32 : Charging connector 34 : On-street parking space 35 : Display 41 : Transformer 42 : Power meter 43 : Charging controller 42
44: Power meter 51: Processor (control unit)
52: Communication I/F (communication unit)
61: Transformer 71: Communication I/F
72: storage unit 73: processor 81: storage unit 82: communication I/F
83: Processor 91: Branch switch 92: Power distribution line 95: Power supply line 96: Power supply line

Claims (9)

a plurality of electric vehicle charging devices spaced at predetermined intervals along high voltage distribution lines and roads;
a server device that transmits and receives various information regarding charging to and from the plurality of electric vehicle charging devices;
An electric vehicle charging system comprising:
Each electric vehicle charging device includes :
Ground power distribution equipment including at least one of a multi-circuit switch, a ground transformer, and a low-voltage branching device, and installed on the ground along with the elimination of utility poles ;
A charger that includes a transformer that converts high-voltage power supplied by the high-voltage distribution line into low-voltage power that can charge a battery mounted on an electric vehicle, and charges the battery using the low-voltage power. When,
a housing that houses the charger and the ground power distribution equipment;
An electric vehicle charging system comprising : The charger has a communication unit that can communicate with the server device via a communication network, and a control unit that controls charging of the battery,
2. The electric vehicle charging apparatus according to claim 1, wherein the control unit determines whether or not power supply to the electric vehicle is appropriate based on power supply and demand balance information in a predetermined area acquired through communication with the server device. system. each said electric vehicle charging device further comprising a signage device attached to said housing and powered by said charger or said ground power distribution equipment;
3. The electric vehicle charging system according to claim 1, wherein the signage device displays information regarding charging performed by the charger. The signage device displays the content acquired from the server device when the charger is not charging, and displays information about charging when the charger is charging. The electric vehicle charging system according to claim 3, characterized by: a charger for charging a battery mounted on an electric vehicle;
ground power distribution equipment that relays power supplied from underground low-voltage distribution lines to the electric vehicle on the ground;
a housing that is installed around the roadway and houses the charger and the ground power distribution device;
with
the ground distribution equipment includes a low-voltage branching device;
The charger has a control unit that controls charging of the battery,
The electric vehicle charging apparatus, wherein the control unit determines whether or not power is supplied to the electric vehicle based on information about the power distribution status obtained from the low-voltage branching device. further comprising a signage device attached to the housing and powered by the charger or the ground power distribution equipment;
6. The electric vehicle charging apparatus according to claim 5, wherein the signage device displays information regarding charging performed by the charger. 7. The electric vehicle charging device according to claim 6, wherein the charging information includes at least one of charging time, charging amount, charging fee, and charging fee discount information. The electric vehicle charging device according to any one of claims 5 to 7, wherein the housing is arranged adjacent to an on-street parking space in which the electric vehicle can be parked. A charging method by the electric vehicle charging device according to claim 5,
An electric vehicle charging method, wherein the charger determines whether or not power supply to the electric vehicle is appropriate based on information about the power distribution status obtained from the low-voltage branch device.

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