JP5647283B2 - Charge / discharge test system and calibration unit - Google Patents

Description

  The present invention relates to a charge / discharge test system and a calibration unit.

  2. Description of the Related Art In recent years, secondary batteries have attracted attention in various fields such as electric vehicles, nighttime response of solar cell systems, and emergency storage batteries during disasters. A secondary battery is subjected to a charge test and a discharge test under conditions preset by a charge / discharge test apparatus during manufacture (see, for example, Patent Document 1).

JP 2010-223896 A

  The manufacturer periodically checks whether the electrical characteristics of the charge / discharge test equipment, such as voltage and current when testing the charge / discharge characteristics of the secondary battery, meet the test specifications, and determines the appropriate characteristics. It is required to maintain. Therefore, the manufacturer periodically performs calibration work by measuring the voltage and current of the test terminal of the charge / discharge test apparatus with a measuring instrument, for example. The calibration work of the charge / discharge test apparatus requires a lot of labor and cost, and it is difficult to use the charge / discharge test apparatus during this period, resulting in a problem that the production efficiency is lowered.

  The charge / discharge test system and the calibration unit disclosed herein are capable of automatically calibrating a charge / discharge test apparatus used when manufacturing a secondary battery, and provide a technique capable of improving the production efficiency of the secondary battery. And

According to one aspect, a charge / discharge test system includes a charge / discharge test apparatus that performs a charge / discharge test of a secondary battery, and a calibration unit for calibrating the charge / discharge test apparatus. includes a measuring unit for measuring the electrical characteristics when charging and discharging test apparatus performs charge-discharge test of the secondary battery, possess a storage battery for supplying power to a part of the circuit of the measuring unit, the measuring unit, An analog circuit and a digital circuit are provided, and the storage battery supplies power to the analog circuit .

According to one aspect, the calibration unit is a calibration unit for calibrating a charge / discharge test apparatus used for a charge / discharge test of a secondary battery. When the charge / discharge test apparatus performs a charge / discharge test of a secondary battery, a measuring unit for measuring the electrical characteristics, possess a storage battery for supplying power to a part of the circuit of the measuring unit, the measuring unit, and an analog circuit, a digital circuit, batteries, power to the analog circuit It is characterized by supplying .

  The charge / discharge test system and the calibration unit disclosed in the present disclosure can automatically calibrate a charge / discharge test apparatus used at the time of manufacturing the secondary battery, and can greatly improve the production efficiency of the secondary battery.

It is a figure which shows an example of the manufacturing line of a charging / discharging test system. It is a figure which shows the example of a connection with a charging / discharging test apparatus, a calibration unit, and a secondary battery. It is a figure which shows an example of a charging / discharging test system. It is a figure which shows an example of a calibration unit. It is a figure which shows an example of the calibration unit when there is no battery. It is a figure which shows an example of the calibration unit which operate | moves with a battery. It is a figure which shows the other example of a calibration unit. It is a flowchart which shows the process of a charging / discharging test apparatus. It is a flowchart which shows the process of a calibration unit. It is a figure which shows an example of the charge time of a battery. It is a flowchart which shows the process of a test management apparatus.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 shows an example of a production line for a charge / discharge test system. A charge / discharge test system 100 shown in FIG. 1 is a system that performs a charge / discharge test of a completed secondary battery 150. In the charge / discharge test system 100, for example, a plurality of charge / discharge test apparatuses 101 are arranged for each test content. In the example of FIG. 1, the charge / discharge test system 100 includes three types of test lines: a test line A that performs a mode A test, a test line B that performs a mode B test, and a test line C that performs a mode C test. . Here, each test of mode A, mode B, and mode C differs in the test contents such as the magnitude of the charging current, the charging pattern, the magnitude of the discharging current, and the discharging pattern. For example, the contents of the test are trickle charging in which mode A repeats charging and discharging, rapid charging in mode B, continuous discharging in mode C, and the like.

  1, the test line A has a plurality of test devices such as a charge / discharge test device 101a1, a charge / discharge test device 101a2, a charge / discharge test device 101a3, etc., for example, the charge / discharge test device 101a1 is a secondary battery. A test of mode A is performed for 150_1. Further, the test line B has a plurality of test devices such as a charge / discharge test device 101b1, a charge / discharge test device 101b2, a charge / discharge test device 101b3, etc., for example, the charge / discharge test device 101b2 is connected to the secondary battery 150_2. On the other hand, the mode B test is performed. Similarly, the test line C includes a plurality of test apparatuses such as a charge / discharge test apparatus 101c1, a charge / discharge test apparatus 101c2, a charge / discharge test apparatus 101c3,. For example, the charge / discharge test apparatus 101c1 performs a mode C test on the secondary battery 150_3, and the charge / discharge test apparatus 101c2 performs a mode C test on the secondary battery 150_4.

  Here, in this embodiment, the code | symbol attached | subjected to each block is provided with the following method. In FIG. 1, charge / discharge test apparatuses 101a1, 101a2, 101a3, 101b1, 101b2, 101b3, 101c1, 101c2, and 101c3 are test apparatuses having the same or similar functions capable of selecting a test mode. In the following description, when the contents common to these test apparatuses are described, the symbols of the test apparatuses are the same as those of the charge / discharge test apparatus 101, for example, except for alphabets a *, b *, c * (* is a number). It is written. Further, in the case of explaining common contents for the test apparatus of the group performing the test in mode A, the test apparatus code is expressed as, for example, charge / discharge test apparatus 101a by adding different numbers in the group. In addition, the codes of the test apparatuses of mode B and mode C are different from each other in alphabetical characters, and are described as, for example, charge / discharge test apparatus 101b and charge / discharge test apparatus 101c. And when referring to the specific charge / discharge test apparatus 101, the code | symbol of a test apparatus is described with the charge / discharge test apparatus 101c1, for example. The secondary battery, the calibration unit, and the like are also expressed in the same way, and the reference of the secondary battery is expressed as a secondary battery 150 when it is common to a plurality of secondary batteries, for example, and indicates a specific secondary battery 150. In this case, “_number” is added, and it is expressed as “secondary battery 150_3”. Similarly, the code of the calibration unit is expressed as calibration unit 102 when common to a plurality of calibration units, and “_number” is added when referring to a specific calibration unit 102, such as “calibration unit 102_2”. It is written.

  Here, the maintenance person periodically inspects the electrical characteristics when the charge / discharge test apparatus 101 tests the secondary battery 150, and when the inspection result does not satisfy the predetermined specification, the charge / discharge test apparatus 101 The electrical characteristics are adjusted so that 101 satisfies the specifications.

  For example, the maintenance person measures whether or not the charging current when performing the charging test of the secondary battery 150 is within a predetermined range. Then, when the charging current is out of the specified range, the maintenance person adjusts the charge / discharge test apparatus 101 so that the charging current becomes, for example, the median value of the specified range. Here, when the charging current is out of the specified range, the rechargeable battery 150 that has been tested in the past by the charge / discharge test apparatus 101 will be retested. Even if there is, adjust and manage so that it does not greatly deviate from the specified range. A detailed adjustment method will be described later. Thus, the calibration work of the charge / discharge test apparatus 101 takes time and cost. In addition, since the charge / discharge test apparatus 101 during the calibration operation cannot test the secondary battery 150, the production efficiency of the secondary battery 150 is also reduced.

  Therefore, in the charge / discharge test system 100 according to the present embodiment, the maintenance person should flow the calibration unit 102 having the same or similar size as the case of the secondary battery 150 to each test line instead of the secondary battery 150. The charge / discharge test apparatus 101 is automatically calibrated.

  FIG. 2 shows a connection example between the charge / discharge test apparatus 101, the calibration unit 102, and the secondary battery 150.

  FIG. 2A shows a state in which the secondary battery 150 is connected to the charge / discharge test apparatus 101. In FIG. 2A, the test terminals 117 of the charge / discharge test apparatus 101 are arranged so as to correspond one-to-one with the terminals 151 of the secondary battery 150. During the test, the terminal 117 comes into contact with the terminal 151, and the charge / discharge test apparatus 101 starts a test of the secondary battery 150.

  FIG. 2B shows a state in which the calibration unit 102 is connected to the charge / discharge test apparatus 101. The calibration unit 102 is a casing having the same or similar size as the secondary battery 150, and includes a terminal 118 having the same or similar arrangement as the terminal 151 of the secondary battery 150. At the time of calibration, the terminal 117 of the charge / discharge test apparatus 101 contacts the terminal 118 of the calibration unit 102, and the calibration unit 102 measures the electrical characteristics of the charge / discharge test apparatus 101.

  In FIG. 1, the movement of the secondary battery 150 and the calibration unit 102 within the test line may be performed manually by an operator, or may be automatically performed by a conveyor, a robot, or the like. Further, the calibration unit 102 may move within a group of the same test mode, or may move between groups of different test modes. Further, the calibration unit 102 is placed on the standby rack 160 or the like when not flowing on the test line. In this case, the calibration unit 102 is moved to the standby rack 160 by an operator, a conveyor, a robot, or the like, and flows again to the test line at the time of calibration. The calibration schedule is determined in advance according to the manufacturing process and manufacturing inspection items, and the charge / discharge test apparatus 101 is calibrated according to the calibration schedule. Further, when calibration is automatically performed, the test management apparatus 103 calibrates each charge / discharge test apparatus 101 by flowing the calibration unit 102 to the test line using a conveyor or a robot according to a calibration schedule. Here, the test management apparatus 103 can acquire the position of the calibration unit 102 in the factory such as the charge / discharge test apparatus 101, the standby rack 160, and the test line to which the calibration unit 102 is connected. A method for acquiring the position of the calibration unit 102 will be described later.

  FIG. 3 shows an example of the charge / discharge test system 100. In the charge / discharge test system 100, the charge / discharge test apparatus 101 is connected to the calibration unit 102 and is controlled and managed by the test management apparatus 103. The charge / discharge test apparatus 101 is connected to the test management apparatus 103 by, for example, a LAN (Local Area Network). Note that the test management apparatus 103 may manage the charge / discharge test apparatuses 101 of the same test group, or may manage the charge / discharge test apparatuses 101 of a plurality of test groups in common. In FIG. 3, the charge / discharge test apparatus 101 and the test management apparatus 103 are separated as separate apparatuses, but the charge / discharge test apparatus 101 may include the function of the test management apparatus 103 as the charge / discharge test apparatus 101.

  In FIG. 3, the charge / discharge test apparatus 101 includes, for example, a charge / discharge circuit 111, a control unit 112, and a power supply unit 113. Here, the charge / discharge test system 100 has, for example, an RFID (Radio Frequency IDentification) function in order to detect that the secondary battery 150 or the calibration unit 102 has flowed through the production line and has come to the charge / discharge test apparatus 101. Have. The RFID function is a technique for recognizing an article to which the RFID tag 191 is attached by reading information stored in the RFID tag 191 in advance with the RFID reader 192. In the example of FIG. 3, the RFID tag 191 is attached to the secondary battery 150 or the calibration unit 102, and the RFID reader 192 reads information of the RFID tag 191 when the RFID tag 191 approaches a short distance of several centimeters. The read information is analyzed by the control unit 112 or the control personal computer 133 of the test management apparatus 103. The information stored in advance in the RFID tag 191 is unique identification information, for example, identification information of the secondary battery 150 or the calibration unit 102, or correspondence with the secondary battery 150 or the calibration unit 102 is known. For example, the identification number or identification code of the RFID tag 191 itself may be used. From this identification information, the test management apparatus 103 can know to which charge / discharge test apparatus 101 the secondary battery 150 and the calibration unit 102 are connected. Furthermore, by installing the RFID reader 192 on the conveyor or standby rack 160 of the production line, the test management apparatus 103 can know the positions of the secondary battery 150 and the calibration unit 102 on the production line. Instead of the RFID function, identification information may be printed on a code such as a barcode, attached to the secondary battery 150 or the calibration unit 102, and read by a barcode reader provided in the charge / discharge test apparatus 101. Good.

  The charge / discharge circuit 111 has a terminal 117 for connecting the secondary battery 150 and the calibration unit 102. In the example of FIG. 3, the terminal 117 has 10 sets of channels from ch01 to ch10, but may not be 10 sets. Each set has a plus (+) terminal and a minus (−) terminal. In the charging / discharging circuit 111, the control unit 112 controls the magnitude and charging time of the charging current, the magnitude and discharging time of the discharging current, and the like. In addition, the charge / discharge circuit 111 measures impedance characteristics, voltage, temperature, and the like of the secondary battery 150 and outputs them to the control unit 112. In the secondary battery 150, a plurality of cells are stacked, each cell is connected to a terminal of the charge / discharge test apparatus 101, and the electrical characteristics are tested for each cell. When the calibration unit 102 is connected to the charge / discharge test apparatus 101, the charge / discharge test apparatus 101 removes the calibration unit 102 from a predetermined connection terminal (for example, ch10) among ten sets of connection terminals from ch01 to ch10. Supply power to operate. For example, the control unit 112 controls the output voltage of the charging / discharging circuit 111 and supplies a constant voltage power source (DC (Direct Current) 5V or the like) from the ch 10 to the calibration unit 102.

  The control unit 112 has a LAN interface circuit, is connected to the test management apparatus 103, and controls the charge / discharge circuit 111 according to a preset test mode or the test contents instructed from the test management apparatus 103.

  The power supply unit 113 is connected to a commercial power supply (AC (Alternating Current) 100V or the like) and supplies power required for the operation of the charge / discharge circuit 111 and the control unit 112.

  In FIG. 3, the test management apparatus 103 includes, for example, a HUB 131, a wireless master device 132, and a control personal computer 133.

  The HUB 131 is a network device for connecting a plurality of charge / discharge test apparatuses 101, a wireless master device 132, and a control personal computer via a LAN.

  The wireless master device 132 is wirelessly connected to the plurality of calibration units 102, transmits / receives control information to / from the calibration unit 102, and receives the status of the calibration unit 102, measurement results, and the like.

  The control personal computer 133 controls the charge / discharge test apparatus 101 in the same test group, or the charge / discharge test apparatuses 101 in a plurality of test groups, sets the test contents before the test, monitors the test state during the test, and after the test Obtains and manages test results.

  In FIG. 3, the calibration unit 102 includes, for example, a control unit 120, a multimeter device 121, a wireless slave device 122, a voltage conversion unit 123, a battery 124, and a switching circuit 141. Further, as described above, the calibration unit 102 has the RFID tag 191 in which the identification information of the unit itself is stored, and the charge / discharge test apparatus 101 reads the information of the RFID tag 191 by the RFID reader 192. Further, the calibration unit 102 has a terminal 118 connected to the terminal 117 of the charge / discharge test apparatus 101.

  The control unit 120 is realized by a CPU (Central Processing Unit) or the like, and controls the operation of the entire calibration unit 102 according to a program stored in the CPU. For example, the control unit 120 communicates with the multimeter device 121 and the wireless slave device 122 via the LAN, and transmits the result measured by the multimeter device 121 from the wireless slave device 122 to the wireless master device 132 of the test management device 103. . Further, the control unit 120 controls the switching circuit 141 to connect each channel ch of the charge / discharge test apparatus 101 and the multimeter apparatus 121, or to convert a part of the channel ch of the charge / discharge test apparatus 101 to the voltage conversion unit 123. Connect to.

  The multimeter device 121 includes a measurement circuit 125 and a measurement control circuit 126. Details of the multimeter device 121 will be described later in detail. The measurement circuit 125 measures the current characteristics, voltage characteristics, impedance, etc. of each channel of the terminal 118 connected to the charge / discharge test apparatus 101. The measurement control circuit 126 controls the measurement contents of the measurement circuit 125 and reads the measurement data of the measurement circuit 125. The measurement control circuit 126 is connected to the control unit 120 via a LAN, and executes measurement based on a command from the control unit 120 or outputs a measurement result to the control unit 120.

  The wireless slave device 122 establishes a wireless line (for example, a wireless LAN line) with the wireless master device 132 of the test management apparatus 103, and information on the calibration unit 102 (measurement data, unit information, etc.) and control information such as an alarm. Are transmitted to and received from the test management apparatus 103.

  The voltage converter 123 converts the power supplied from the charge / discharge test apparatus 101 via the switching circuit 141 into a voltage required for the operation of the multimeter apparatus 121 and the wireless slave unit 122. In the example of FIG. 3, the voltage conversion unit 123 converts the DC5V voltage supplied from the charge / discharge test apparatus 101 into the same AC100V as the commercial power supply and supplies the converted voltage to the multimeter apparatus 121. In addition, the voltage conversion unit 123 converts the DC 5V voltage into DC 24V and supplies the converted voltage to the wireless slave device 122 and the control unit 120.

  The battery 124 is a small storage battery for supplying power to some circuits in the multimeter device 121. The battery 124 does not have a power capacity for driving the entire multimeter device 121, and has a power capacity capable of supplying power to some circuits of the multimeter device 121 for a time longer than at least a predetermined calibration interval. That's fine. Further, the battery 124 supplies power to some circuits in the multimeter device 121 while being charged from the voltage conversion unit 123 while the power is supplied from the charge / discharge test apparatus 101 to the calibration unit 102. In addition, the battery 124 supplies power to some circuits in the multimeter device 121 even during a period when power is not supplied from the charge / discharge test apparatus 101 to the calibration unit 102. Thereby, since power is continuously supplied to some circuits in the multimeter device 121, it is possible to prevent the operation of the circuit from becoming unstable due to turning on and off of the power. The circuit of the multimeter device 121 that supplies power from the battery 124 will be described in detail later.

  The switching circuit 141 includes a switch for switching a channel ch for supplying power from the charge / discharge test apparatus 101 to the calibration unit 102, and the switch is controlled by the control unit 120. For example, when supplying DC5V power from ch10, the control unit 120 switches ch10 connected to the charge / discharge test apparatus 101 from the multimeter device 121 side to the voltage conversion unit 123 side.

  As described above, the calibration unit 102 does not have a power cord for connecting to a commercial power source, and can be handled as a stand-alone like the product secondary battery 150, and flows in the secondary battery 150 on the test line. be able to. The calibration unit 102 shown in FIG. 3 is equipped with a commercial product with a guaranteed measurement accuracy as the multimeter device 121, so that the voltage conversion unit 123 supplies the same AC 100 V as the commercial power supply. For example, when a dedicated measuring instrument is developed and used instead of the multimeter device 121, the power source of the dedicated measuring instrument may directly use DC5V supplied from the charge / discharge test apparatus 101. Further, if DC5V is used for the control unit 120, the wireless slave unit 122, and the battery 124, the calibration unit 102 does not have to include the voltage conversion unit 123. In any case, the calibration unit 102 according to the present embodiment has a casing and a terminal 118 having the same or similar size as the secondary battery 150 and the same or similar arrangement as the terminal 151 of the secondary battery 150. Terminal 118. The calibration unit 102 is supplied with power from the charge / discharge test apparatus 101 during a period in which it is connected to the charge / discharge test apparatus 101, and is a part of the multimeter apparatus 121 during a period in which it is not connected to the charge / discharge test apparatus 101. Power is supplied from the battery 124 to the circuit.

  FIG. 4 shows an example of the calibration unit 102. In FIG. 4, blocks having the same reference numerals as those in FIG. 3 have the same or similar functions. In FIG. 4, the multimeter device 121 includes a measurement circuit 125, a measurement control circuit 126, a power supply circuit 127, and a display circuit 128.

  The measurement circuit 125 measures the electrical characteristics of each channel of the charge / discharge test apparatus 101 connected via the switching circuit 141 and the terminal 118 based on the control of the measurement control circuit 126, and outputs the electrical characteristics to the measurement control circuit 126. .

  The measurement control circuit 126 controls the measurement circuit 125 according to the measurement content instructed from the control unit 120, and outputs the measured electrical characteristics of the charge / discharge test apparatus 101 to the control unit 120.

  The power supply circuit 127 converts the AC 100V AC voltage supplied from the voltage converter 123 into a DC voltage, and supplies the DC voltage to the measurement control circuit 126, the display circuit 128, and a part of the measurement circuit 125.

  The display circuit 128 has a liquid crystal display panel, for example, and the measurement control circuit 126 displays setting parameters and measurement results of the multimeter device 121. In this embodiment, the multimeter device 121 is stored inside the casing of the calibration unit 102. However, the display content of the liquid crystal display panel may be confirmed from outside the casing of the calibration unit 102.

  In FIG. 4, the measurement circuit 125 includes an analog circuit 401 and a digital circuit 402. The analog circuit 401 includes an A / D converter (indicated as A / D in FIG. 4) 411, an OP amplifier (indicated as AMP in FIG. 4) 412, a reference voltage circuit (indicated as Ref in FIG. 4) 413, and the like. The analog circuit 401 is a circuit for measuring electrical characteristics (charging voltage, charging current, discharging voltage, discharging current, impedance, etc.) of the charging / discharging test apparatus 101. The analog measurement value is converted into digital data by the A / D converter 411, and the analog circuit 401 outputs the digital measurement value to the digital circuit 402. The digital circuit 402 has an oscillation circuit 414 and a logic circuit, and holds final measurement values, counts numerical values, decodes and encodes measurement results, and performs final measurement values (voltage value, current value, resistance value, and the like). ) To the measurement control circuit 126.

  Here, the A / D converter 411, the OP amplifier 412, the reference voltage circuit 413, and the like of the analog circuit 401 may perform a heat run while being energized for a certain time or more after the power is turned on, thereby stabilizing the operation of the circuit. Desired. For this purpose, the calibration unit 102 according to the present embodiment supplies power to the analog circuit 401 of the measurement circuit 125 directly from the small battery 124. The digital circuit 402 is supplied with power from the power supply circuit 127 instead of the battery 124. Here, a problem when the battery 124 is not provided will be described.

  FIG. 5 shows an example of the calibration unit 102a when there is no battery. 5 is different from FIG. 4 in that the battery 124 is not provided and the analog circuit 401 of the measurement circuit 125 is supplied with power from the power supply circuit 127. For this reason, during the period when the calibration unit 102 a is not connected to the charge / discharge test apparatus 101, the voltage converter 123 is not supplied with power from the charge / discharge test apparatus 101, so that the measurement circuit 125 (analog circuit 401 or digital circuit 402) is supplied. Power is not supplied. Therefore, when the calibration unit 102a is connected to the next charge / discharge test apparatus 101 and the supply of power is started, the calibration unit 102a is energized without measurement for a certain period until the operation of the analog circuit 401 is stabilized. Is required. For this reason, it takes a long time for the calibration unit 102a to calibrate the charge / discharge test apparatus 101, resulting in a problem that the efficiency of the calibration test is deteriorated.

  On the other hand, the calibration unit 102 according to the present embodiment described with reference to FIG. 4 is supplied with power from the battery 124 to the analog circuit 401 of the measurement circuit 125 during a period in which the calibration unit 102 is not connected to the charge / discharge test apparatus 101. . Thereby, when the calibration unit 102 is connected to the next charge / discharge test apparatus 101 and the supply of power is started, the operation of the analog circuit 401 is already in a stable state, so that the measurement can be performed immediately. And the efficiency of the calibration test can be improved.

  FIG. 6 shows an example of a calibration unit that operates on a battery. Since the calibration unit 102a shown in FIG. 5 operates with the power supplied from the charge / discharge test apparatus 101, no power is supplied to the analog circuit 401 of the measurement circuit 125 while the charge / discharge test apparatus 101 is not connected. There was a problem. On the other hand, the calibration unit 102b shown in FIG. 6 has a large battery 141 and supplies power to the entire calibration unit 102b without receiving power from the charge / discharge test apparatus 101. Can work. For this reason, the analog circuit 401 of the measurement circuit 125 is always supplied with power from the battery 141. As a result, when the calibration unit 102b is connected to the next charge / discharge test apparatus 101, the operation of the analog circuit 401 is already in a stable state, so that the measurement can be performed immediately. However, the calibration unit 102b is required to be periodically removed from the test line and charged with the battery 141. This causes a problem that the use efficiency of the calibration unit 102b decreases and maintenance work increases.

  On the other hand, the calibration unit 102 according to the present embodiment shown in FIG. 4 charges the battery 124 from the voltage conversion unit 123 when connected to the charge / discharge test apparatus 101. Therefore, the battery 124 is charged periodically. It does not have to be. The battery 124 may be a small battery with a small capacity. Further, since the calibration unit 102 does not need to be removed from the test line and charged, the use efficiency of the calibration unit 102 is improved and maintenance work can be reduced.

  FIG. 7 shows another example of the calibration unit 102. In the calibration unit 102 in FIG. 4, the battery 124 supplies power to the analog circuit 401 of the measurement circuit 125, but power may be supplied to some circuits of the digital circuit 402. For example, in the calibration unit 102c of FIG. 7, the battery 124 supplies power to the analog circuit 401 and the oscillation circuit 414 of the digital circuit 402c. Since the oscillation circuit 414 may take time until the oscillation frequency becomes stable, the oscillation frequency can be kept stable by energizing the battery 124. Note that the digital circuit 402 c includes wiring for supplying power to the oscillation circuit 414 and wiring for supplying power to circuits other than the oscillation circuit 414.

  The battery 124 may supply power to the A / D converter 411 in the analog circuit 401. Or you may make it change suitably the location which supplies power from the battery 124 according to the time which is not connected to the charging / discharging test apparatus 101. FIG. For example, when the time (standby time) that is not connected to the charge / discharge test apparatus 101 is 30 minutes or less, from 30 minutes to 5 hours, and when it is 5 hours or more, the calibration unit 102 is separated from the battery 124. You may make it switch the part which supplies power. For example, the battery 124 supplies power to the entire measurement circuit 125 when the standby time is 30 minutes or less, and does not supply power other than the analog circuit 401 when it is from 30 minutes to 5 hours, and when it is 5 hours or more. Do not supply power to any device other than the A / D converter 411. In any case, the calibration unit 102 can shorten the time from the connection to the charge / discharge test apparatus 101 to the start of calibration.

  FIG. 8 shows the processing of the charge / discharge test apparatus 101.

  In step S101, the control unit 112 of the charge / discharge test apparatus 101 detects whether or not the secondary battery 150 (or the calibration unit 102) is connected, and waits until it is connected.

  The presence / absence of connection can be detected, for example, by reading information of the RFID tag 191 attached to the calibration unit 102 (or the secondary battery 150) with the RFID reader 192 described with reference to FIG.

  In step S <b> 151, the control unit 112 of the charge / discharge test apparatus 101 determines whether the connected apparatus is the calibration unit 102. Then, the control unit 112 proceeds to the process of step S152 when it is the calibration unit 102, and proceeds to the process of step S102 when it is the secondary battery 150.

  Whether the calibration unit 102 or the secondary battery 150 is used can be determined based on information read from the RFID tag 191 by the RFID reader 192. For example, the charge / discharge test apparatus 101 or the test management apparatus 103 has a table in which the identification information of the calibration unit 102 and the secondary battery 150 flowing through the test line is registered in advance. Then, the charge / discharge test apparatus 101 or the test management apparatus 103 compares the identification information read by the RFID reader 192 with the identification information registered in the table, and connected to the calibration unit 102 (or the secondary battery 150). Can be identified. Alternatively, the RFID reader 192 may be replaced with a scanner that reads a print code such as a two-dimensional barcode. Then, the charge / discharge test apparatus 101 may perform individual identification of the calibration unit 102 (or secondary battery 150) by reading the print code of the calibration unit 102 (or secondary battery 150) with a scanner.

  In step S152, the control unit 112 of the charge / discharge test apparatus 101 prepares for a calibration test because the connected apparatus is the calibration unit 102. For example, the control unit 112 starts supplying power to a predetermined designated channel. For example, in FIG. 3, when the calibration unit 102 switches ch10 (may be another ch) to the voltage conversion unit 123 side by the switching circuit 141, the charge / discharge circuit 111 of the charge / discharge test apparatus 101 has DC5V on ch10. Supply constant voltage power. In step S152, the control unit 112 of the charge / discharge test apparatus 101 notifies the control personal computer 133 of the test management apparatus 103 via the LAN that the calibration unit 102 is connected.

  In step S153, the control unit 112 of the charge / discharge test apparatus 101 is instructed by the test management apparatus 103 to start a calibration test. Note that the test management apparatus 103 is notified from the control unit 120 of the calibration unit 102 through the wireless slave device 122 and the wireless master device 132 that the activation has been completed. Then, the test management apparatus 103 instructs the calibration unit 102 to start a calibration test. Thereafter, the control unit 112 of the charge / discharge test apparatus 101 performs a preset calibration test on each channel other than the channel supplying power to the calibration unit 102. For example, when a DC 5V constant voltage power supply is supplied at ch10, the calibration unit 102 performs a charge test and a discharge test on each ch from ch01 to ch09 of the charge / discharge test apparatus 101. Here, in the calibration test, the measurement circuit 125 of the multimeter device 121 measures values such as a charging voltage and a charging current when the charge / discharge test device 101 tests the secondary battery 150, and the measurement result is appropriately determined. The control unit 120 notifies the test management apparatus 103 wirelessly.

  In step S154, the control unit 112 of the charge / discharge test apparatus 101 determines whether or not the calibration test is completed, and continues the operation of step S153 until the calibration test is completed. When the calibration test is completed, the control unit 112 proceeds to the next step S155. The series of processing is performed in cooperation with the processing of the calibration unit 102 and the processing of the test management apparatus 103. For example, the test management apparatus 103 instructs the charge / discharge test apparatus 101 to perform a charge test and charges the calibration unit 102. Instruct to measure the electrical characteristics during the test.

  In step S155, the control unit 112 of the charge / discharge test apparatus 101 determines whether or not the calibration test for the ch01 to ch10 has been completed. If the calibration test has not been completed, the process proceeds to step S156. Advances to the process of step S157. The series of processing is performed in cooperation with the processing of the calibration unit 102 and the processing of the test management device 103. The test management device 103 determines whether the calibration unit 102 is in the state of the switching circuit 141 or the charge / discharge test device 101. The channels that supply power to 102 are managed.

  In step S156, the control unit 112 of the charge / discharge test apparatus 101 switches the ch supplying power to the calibration unit 102 to another ch for which the calibration test has been completed, based on a command from the test management apparatus 103. In the case of the previous example, since the charge / discharge test apparatus 101 supplies power from the ch10 to the calibration unit 102, the power supply is switched to ch09 (which may be ch01 to ch08) for which the calibration test has been completed. At this time, the charge / discharge test apparatus 101 starts power supply from ch09 before turning off power supply to ch10, and stops power supply to ch10 after power supply from ch09 is completed. As a result, the calibration unit 102 is supplied with power in a time-overlapping manner from ch09 and ch10, so that the operation is not interrupted. In parallel with the operation of the charge / discharge test apparatus 101, the test management apparatus 103 instructs the calibration unit 102 to switch the ch connected to the voltage conversion unit 123 from ch10 to ch9. Then, returning to step S153, the charge / discharge test apparatus 101 and the calibration unit 102 similarly perform the calibration test of ch10 for which the calibration test has not been completed.

  In step S157, the control unit 112 of the charge / discharge test apparatus 101 stops power supply to the calibration unit 102 when notified from the test management apparatus 103 that the calibration test for each channel has been completed. In the previous example, the power supply to ch09 is stopped, and the setting of ch09 of charge / discharge circuit 111 is returned to the charge / discharge test of secondary battery 150. Thereby, the charge / discharge test apparatus 101 can immediately perform the charge / discharge test of the secondary battery 150 when the secondary battery 150 is connected to the charge / discharge test apparatus 101 next to the calibration unit 102. Then, the charge / discharge test apparatus 101, the calibration unit 102, and the test management apparatus 103 end a series of calibration tests.

  Next, when the charge / discharge test apparatus 101 detects the connection of the secondary battery 150 in step S151, the charge / discharge test apparatus 101 performs the following process.

  In step S102, the control unit 112 of the charge / discharge test apparatus 101 performs a charge / discharge test of the secondary battery 150 in a preset test mode. For example, the control unit 112 tests the voltage change and the temperature change when charging the first 30 minutes with the charging current 2A and charging the next 30 minutes with the charging current 1A.

  In step S103, the control unit 112 of the charge / discharge test apparatus 101 determines whether or not the test is finished, and continues the operation of step S102 until the test is finished. Then, when the test is completed, the control unit 112 proceeds to the next step.

  In step S104, the control unit 112 of the charge / discharge test apparatus 101 notifies the identification information of the secondary battery 150 and the test result to the control personal computer 133 of the test management apparatus 103 via the LAN.

  In this way, the charge / discharge test apparatus 101 performs a charge / discharge test of the secondary battery 150 when the secondary battery 150 is connected, and a calibration test by the calibration unit 102 when the calibration unit 102 is connected. be able to.

  Here, the process for adjusting the calibration test and the charge / discharge test apparatus 101 in step S153 will be described. The control personal computer 133 of the test management apparatus 103 designates a charging voltage, a charging current, and the like to the control unit 112 of the charge / discharge test apparatus 101. Then, the charging / discharging circuit 111 supplies a charging voltage and a charging current to the calibration unit 102 under specified conditions. On the other hand, the calibration unit 102 measures a charging voltage, a charging current, and the like by the measurement circuit 125, and transmits the measurement result from the wireless slave unit 122 of the calibration unit 102 to the wireless master unit 132 of the test management device 103, and the control personal computer 133. Notify The control personal computer 133 checks whether the measurement result satisfies the test specification of the charge / discharge test apparatus 101. For example, the control personal computer 133 checks whether or not the measured values of the test voltage and the test current specified in the charge / discharge test apparatus 101 are within a specified range. Then, the control personal computer 133 determines whether to adjust the charge / discharge test apparatus 101 according to the measurement result.

  For example, if the measurement result is within the specified range and there is a margin, the control personal computer 133, if the measurement result is within the specified range but there is no margin, if the measurement result is not within the specified range, Which of the following is true. Here, the control personal computer 133 determines whether or not there is a margin, for example, based on whether or not the measurement result is within a range of 50% of the specified range. If the measurement result is within the specified range and there is a margin, the control personal computer 133 determines that the charge / discharge test apparatus 101 is acceptable. Further, the control personal computer 133 instructs the control unit 112 of the charge / discharge test apparatus 101 when the measurement result is within the specified range and there is no allowance (for example, when it exceeds 50% of the specified range). Then, the setting of the charge / discharge circuit 111 is adjusted. For example, when the charging voltage of ch1 is lower than 50% of the specified range, the control personal computer 133 increases the charging voltage of ch1 to the control range 112 of the charge / discharge test apparatus 101 to the median value of the specified range. To command. After that, the control personal computer 133 instructs the calibration unit 102 to measure the charging voltage of ch1, and confirms whether the measurement result is within the specified range and there is a margin. If there is still no room, the control personal computer 133 repeats the same operation until there is room in the measurement result. On the other hand, if the measurement result does not fall within the specified range, the control personal computer 133 displays the alarm message on the screen of the control personal computer 133 as the charge / discharge test apparatus 101 fails. At this time, the control personal computer 133 may generate an alarm sound. Thereby, the operator can recognize the abnormality of the charge / discharge test apparatus 101. Then, after the previous calibration, the operator confirms the list of the production numbers of the secondary batteries 150 tested by the charge / discharge test apparatus 101 with the control personal computer 133, and retests these secondary batteries 150. . The control personal computer 133 associates and manages the identification information of the secondary battery 150 read by the charge / discharge test apparatus 101 with the RFID reader 192 and the test result of the secondary battery 150.

  In this way, the charge / discharge test apparatus 101 is automatically calibrated by the calibration unit 102 and can maintain the quality of the charge / discharge test of the secondary battery 150.

  FIG. 9 shows the processing of the calibration unit 102.

  In step S201, the calibration unit 102 detects whether or not the charge / discharge test apparatus 101 is connected, and waits until it is connected. Actually, since the calibration unit 102 does not operate until power is supplied from the charge / discharge test apparatus 101, the charge / discharge test apparatus 101 and the test management apparatus 103 wait until the calibration unit 102 is activated. Here, the activation of the calibration unit 102 is equivalent to the detection of the connection of the charge / discharge test apparatus 101, but the calibration unit 102 has a DC 5V power supply voltage for a channel (for example, ch10) that is scheduled to be supplied after the activation for confirmation. You may check whether there is. Alternatively, the calibration unit 102 may detect the presence / absence of connection based on a change in impedance between terminals when the terminal 118 of the multimeter device 121 is connected to the terminal 117 of the charge / discharge test device 101. The calibration unit 102 may include a mechanical switch that detects an operation in which the terminal 118 is pressed against the terminal 117 of the charge / discharge test apparatus 101.

  In step S <b> 202, the calibration unit 102 measures the current and voltage of the charge / discharge test performed by the charge / discharge test apparatus 101, and outputs the measurement result to the wireless slave device 122.

  In step S <b> 203, the calibration unit 102 transmits the measurement result from the wireless slave device 122 to the wireless master device 132 of the test management apparatus 103. When transmitting the measurement result to the test management apparatus 103, the calibration unit 102 transmits the identification information of the calibration unit 102 itself together with the measurement result to the test management apparatus 103. The test management apparatus 103 uses the identification information received from the calibration unit 102 by the control personal computer 133 and the identification information read by the RFID reader 192 of the charge / discharge test apparatus 101, which charge / discharge test apparatus 101 and which calibration unit 102. It is managed whether it was calibrated with.

  In step S204, the calibration unit 102 determines whether or not the calibration test is completed, and continues the operation of step S202 until the calibration test is completed. Then, when the measurement is completed, the calibration unit 102 proceeds to the process of the next step. The series of processing is performed in cooperation with the processing of the charge / discharge test apparatus 101 and the processing of the test management apparatus 103, and the calibration unit 102 is notified of the end of measurement from the test management apparatus 103.

  In step S251, the calibration unit 102 uses the switching circuit 141 to switch the power supply channel to another channel for which the calibration test has been completed, based on a command from the test management apparatus 103. For example, when the power supply from ch10 is received and the calibration test from ch01 to ch09 is completed, the calibration unit 102 switches the power supply from, for example, ch09 to the voltage converter 123 according to an instruction from the test management apparatus 103. 141 is switched. In addition, the calibration unit 102 switches the ch 10 that has been supplied with power from the voltage conversion unit 123 side to the measurement circuit 125 side. At this time, similarly to the charge / discharge circuit 111 described above, the control unit 120 switches the switching circuit 141 so that the power supply from ch09 and ch10 overlaps in time.

  In step S252, the calibration unit 102 determines whether or not the calibration test for each channel from ch01 to ch10 is completed. If not completed, the process returns to step S202. If completed, the process of step S205 is performed. Proceed to The series of processes is performed in cooperation with the process of the charge / discharge test apparatus 101 and the process of the test management apparatus 103, and the calibration unit 102 finishes measuring all the channels of the charge / discharge test apparatus 101 from the test management apparatus 103. You will be notified.

  In step S205, the calibration unit 102 notifies the test management apparatus 103 that the calibration test process in the calibration unit 102 has been completed. Note that the test management apparatus 103 receives a calibration test end notification from the charge / discharge test apparatus 101, so the calibration unit 102 may omit the test end notification to the test management apparatus 103.

  In step S253, the calibration unit 102 returns the ch that receives power supply from the charge / discharge test apparatus 101 to the default ch. In the previous example, since the default ch that is first supplied with power is ch10, the calibration unit 102 switches ch10 to the voltage converter 123 side by the switching circuit 141 and switches ch01 to ch09 to the measurement circuit 125 side. . The calibration unit 102 promptly executes the process of step S253 after notifying the test management apparatus 103 of the end of the calibration test in step S252. This is because the test management apparatus 103 stops the power supplied to the calibration unit 102 from the charge / discharge circuit 111 of the charge / discharge test apparatus 101 when receiving a notification of completion of the calibration test from the calibration unit 102 (or charge / discharge test apparatus 101). Therefore, the switching is finished before this. Note that the test management apparatus 103 may instruct the charge / discharge test apparatus 101 to stop supplying power to the calibration unit 102 after receiving a notification of completion of the calibration test from the calibration unit 102. In addition, when the switching circuit 141 is not a mechanical switch but an electronic switch that performs electrical switching, the switching circuit 141 is switched to a default state at the time of startup, and thus may not be returned to the default state. .

  Here, a switching example of the switching circuit 141 will be described in detail.

  FIG. 10 shows an example of the charging time of the battery 124. In FIG. 10, the calibration time Tr from ch01 to ch09 when no power is supplied to the calibration unit 102 is a period from timing t0 to timing t10. Note that ch10 supplies power to the calibration unit 102 from timing ts slightly before calibration t0. The period from timing t10 to timing t11 when the calibration time Tr from ch01 to ch09 ends is an overlapping period when the power supply is switched from ch10 to ch09. The charge / discharge test apparatus 101 supplies power to the calibration unit 102 from both ch09 and ch10 during this overlap period. Then, at timing t11, the switching circuit 141 switches ch10 to the multimeter device 121 side, and the calibration unit 102 calibrates ch10 of the charge / discharge test apparatus 101 during the period up to timing t20 (calibration period Tr).

  In this way, the calibration unit 102 ends the calibration of the charge / discharge test apparatus 101 from ch01 to ch10. Then, at timing te, the charge / discharge test apparatus 101 ends the power supply to the calibration unit 102, the terminal 118 of the calibration unit 102 is separated from the terminal 117 of the charge / discharge test apparatus 101, and the calibration unit 102 performs the next charge / discharge test. Move to the position of the device 101. In the example of FIG. 10, the period from the timing ts to the timing te is the charging period of the battery 124.

  In the above example, the power supply is performed by two channels ch09 and ch10. However, for example, the power supply may be performed by ch01 to ch08. The power supply may be switched in turn using three or more channels. Alternatively, when it is difficult to supply power with a capacity sufficient to operate the calibration unit 102 with one channel, power may be supplied in parallel from a plurality of channels. For example, when the power supply capacity for driving the calibration unit 102 is DC5V and 2A, and the power supply capacity that can be supplied from one channel of the charge / discharge circuit 111 is DC5V and 1A, the power supply is connected in parallel from the two channels. Supply. Note that the number of channels to be arranged in parallel may be three or more plural channels in parallel instead of two channels.

  Next, an operation example of the test management apparatus 103 will be described.

  FIG. 11 shows processing of the test management apparatus 103. Note that the flowchart of FIG. 11 is a calibration process performed by the control personal computer 133. The control personal computer 133 performs manufacturing management processing of the secondary battery 150 (such as managing test results and test date for each serial number of the secondary battery 150) in addition to the processing at the time of calibration, and the charge / discharge test apparatus 101. Performs processing to manage calibration schedules and calibration results.

  Hereinafter, processing at the time of calibration of the test management apparatus 103 will be described in order. The calibration unit 102 is connected to the charge / discharge test apparatus 101, and the charge / discharge test apparatus 101 starts calibration of a charge / discharge test in a preset test mode, and the calibration unit 102 is adjusted accordingly. Is in a state in which measurement for calibration is started. Further, as described above, the control personal computer 133 acquires the identification information of the charge / discharge test apparatus 101 and the calibration unit 102 at the time of connection.

  In step S301, the control personal computer 133 stands by until a measurement value is received from the calibration unit 102. Actually, the control personal computer 133 performs processing by interruption by the wireless master device 132, and therefore performs other processing during standby. When the control personal computer 133 receives the measurement value from the calibration unit 102, the control personal computer 133 proceeds to the process of the next step S302.

  In step S <b> 302, the control personal computer 133 compares the measured value received in step S <b> 301 with the output set value (the test value of the secondary battery 150) preset in the charge / discharge test apparatus 101. If the comparison result deviates from the preset output setting value, the process proceeds to step S303. If the comparison result does not deviate from the output setting value, the process proceeds to step S304.

  Here, the case where the charge / discharge test apparatus 101 calibrates the charging voltage output from the ch01 of the terminal 117 will be described as an example. When the specified range of the charging voltage output from the charge / discharge test apparatus 101 is determined to be, for example, 18 V ± 0.5 V in the test specification, the test management apparatus 103 determines that the voltage of ch01 of the terminal 118 measured by the calibration unit 102 is Check whether it is within the specified range. Actually, as described above, when the measured voltage is a value (for example, 17.6 V) that is out of 50% (18 V ± 0.25 V) of the specified range, for example, the test management apparatus 103 performs step S303. Proceed to processing. Here, as described above, when the measured value of the calibration unit 102 exceeds the specified range of the test specification of the secondary battery 150 (for example, the measured value is 19V or 17V), the manufacturer can charge / discharge the battery. It is required to retest the past secondary battery 150 tested by the test apparatus 101. If the measurement value of the calibration unit 102 exceeds the specified range of the test specification of the secondary battery 150, the control personal computer 133 of the test management apparatus 103 generates an alarm sound in the process of step S302 of FIG. An alarm message may be displayed. Thereby, the production manager can know the test failure of the secondary battery 150.

  In step S303, the control personal computer 133 adjusts the output voltage of ch01 of the terminal 117 of the charge / discharge test apparatus 101 according to the comparison result of step S302. In the previous example, the control personal computer 133 instructs the control unit 112 of the charge / discharge test apparatus 101 to increase the output voltage (17.6V) of ch01 to 18V via the HUB 131. Receiving this, the control unit 112 of the charge / discharge test apparatus 101 controls the charge / discharge circuit 111 so as to increase the output voltage of ch01 of the charge / discharge circuit 111 by 0.4V. Then, the control personal computer 133 requests the adjusted measurement value from the calibration unit 102, and the calibration unit 102 measures ch01 again and transmits it to the control personal computer 133. The control personal computer 133 checks whether or not the remeasured value is adjusted within the specified range. When adjustment is insufficient (for example, when the output voltage of ch01 has increased only from 17.6V to 17.7V), the control personal computer 133 does not perform steps S302 and S302 until the output voltage of ch01 falls within the specified range. The process of step S303 is repeated.

  In step S304, the control personal computer 133 determines whether or not the calibration test items (charging voltage, charging current, etc.) of the charge / discharge test apparatus 101 have been completed. Return to processing and continue the calibration test. If the calibration is not completed normally, the control personal computer 133 displays a calibration error together with the identification information of the charge / discharge test apparatus 101 on the screen, for example, and prompts the maintenance manager to stop using the charge / discharge test apparatus 101. . Here, as an example of the case where the calibration is not completed normally, there are, for example, a case where the normal value cannot be set by the adjustment in step S303 and a case where the measured value exceeds the specified range.

In step S305, the control personal computer 133 records and manages the result of the calibration test of the charge / discharge test apparatus 101 on a hard disk in the personal computer. The following is an example of recorded information.
Charge / discharge test apparatus 101: identification information = 1112
・ Calibration date and time: February 3, 2013 6:00
Calibration unit: identification information = 0033
Calibration result: normal In this way, the charge / discharge test system 100 according to the present embodiment performs the charge / discharge test of the secondary battery 150 by the charge / discharge test apparatus 101, the calibration unit 102, and the test management apparatus 103. The charge / discharge test apparatus 101 can be automatically calibrated.

  As described above, the manufacturer can automatically calibrate the charge / discharge test apparatus 101 only by flowing the calibration unit 102 having the same or similar shape as the secondary battery 150 to the test line. In addition, since the calibration unit 102 according to the present embodiment is mounted with a small battery 124 and energizes the entire measurement circuit 125 or a part of the circuit, the calibration unit 102 is activated by being connected to the charge / discharge test apparatus 101 in step S201. Later, calibration measurement can be performed immediately. Thereby, compared with the case where a maintenance person manually calibrates the charge / discharge test apparatus 101, the calibration can be performed quickly. As a result, the operating rate of the charge / discharge test apparatus 101 is increased, and the production efficiency of the secondary battery can be improved.

  From the above detailed description, features and advantages of the embodiments will become apparent. This is intended to cover the features and advantages of the embodiments described above without departing from the spirit and scope of the claims. Also, any improvement and modification should be readily conceivable by those having ordinary knowledge in the art. Therefore, there is no intention to limit the scope of the inventive embodiments to those described above, and appropriate modifications and equivalents included in the scope disclosed in the embodiments can be used.

DESCRIPTION OF SYMBOLS 100 ... Charge / discharge test system; 101, 101a1, 101a2, 101a3, 101b1, 101b2, 101b3, 101c1, 101c2, 101c3 ... Charge / discharge test apparatus; 102a, 102b, 102c ... calibration unit; 103 ... test management device; 111 ... charge / discharge circuit; 112 ... control part; 113 ... power supply part; 117 ... terminal; 120 terminal: control unit 121 121 multimeter device 122 wireless sub-unit 123 voltage conversion unit 124 battery 141 switching circuit 125 125 Measurement circuit 126 Measurement control circuit 127 Power supply circuit 128 Display circuit 131 132: Wireless master unit; 133: Control personal computer; 150, 150_1, 150_2, 150_3, 150_4 ... Secondary battery; 151 ... Terminal; 160 ... Standby rack; RFID tag; 192 ... RFID reader; 401 ... analog circuit; 402 ... digital circuit; 411 ... A / D converter; 412 ... OP amplifier; 413 ... reference voltage circuit; ... Oscillation circuits

Claims (8)

In a charge / discharge test system having a charge / discharge test apparatus for performing a charge / discharge test of a secondary battery, and a calibration unit for calibrating the charge / discharge test apparatus,
The calibration unit is
A measurement unit that measures electrical characteristics when the charge / discharge test apparatus performs a charge / discharge test of the secondary battery; and
Wherein possess a storage battery for supplying power to a part of the circuit of the measuring unit,
The measurement unit includes an analog circuit and a digital circuit,
The storage battery, the charge and discharge test system and supplying power to the analog circuit. The charge / discharge test system according to claim 1,
The charge / discharge test apparatus comprises:
When the secondary battery is connected, a charge / discharge test of the secondary battery is performed, and when the calibration unit is connected, power is supplied to operate the calibration unit, and the storage battery of the calibration unit is A charge / discharge test system comprising a charge / discharge section for charging. In the charge / discharge test system according to claim 1 or 2,
The calibration unit is
A plurality of connection terminals for connecting to the charge / discharge test apparatus arranged in the same or similar position as the secondary battery in the same or similar shape as the secondary battery,
A power supply for supplying the power supplied from the charge / discharge test apparatus to the unit and charging the storage battery;
Of the plurality of connection terminals, a predetermined part of the connection terminals are connected to the power supply unit, and the remaining connection terminals are connected to the measurement unit, and a switching unit,
A control unit that replaces the connection terminal that supplies power to the power supply unit and the connection terminal that is connected to the measurement unit and performs a calibration test of the charge / discharge test apparatus;
The charge / discharge test apparatus comprises:
A detection unit for detecting connection of the calibration unit;
When the detection unit detects the connection of the calibration unit, the power is supplied to the power unit of the calibration unit from a predetermined part of the plurality of connection terminals, and the remaining units A charge / discharge test system further comprising: a control unit that performs a calibration test using the connection terminal. In the charging / discharging test system according to any one of claims 1 to 3 ,
The analog circuit has an A / D converter,
The storage battery supplies power to the A / D converter. A charge / discharge test system according to claim 1. In a calibration unit for calibrating a charge / discharge test device used for a charge / discharge test of a secondary battery,
A measurement unit that measures electrical characteristics when the charge / discharge test apparatus performs a charge / discharge test of the secondary battery; and
Wherein possess a storage battery for supplying power to a part of the circuit of the measuring unit,
The measurement unit includes an analog circuit and a digital circuit,
The storage battery, the calibration unit and supplying power to the analog circuit. The calibration unit according to claim 5 ,
The said storage battery is charged with the power supply supplied from the said charge / discharge test apparatus, while being connected to the said charge / discharge test apparatus. The calibration unit characterized by the above-mentioned. In the calibration unit according to claim 5 or 6 ,
The calibration unit is
A plurality of connection terminals for connecting to the charge / discharge test apparatus arranged in the same or similar position as the secondary battery in the same or similar shape as the secondary battery,
A power supply for supplying the power supplied from the charge / discharge test apparatus to the unit and charging the storage battery;
Of the plurality of connection terminals, a predetermined part of the connection terminals are connected to the power supply unit, and the remaining connection terminals are connected to the measurement unit, and a switching unit,
A calibration unit, further comprising: a control unit that replaces the connection terminal that supplies power to the power supply unit and the connection terminal that is connected to the measurement unit and performs a calibration test of the charge / discharge test apparatus. In the calibration unit according to any one of claims 5 to 7 ,
The analog circuit has an A / D converter,
The said storage battery supplies a power supply to the said A / D converter. The calibration unit characterized by the above-mentioned.

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