JP5727397B2 - Calibration unit for charge / discharge test equipment - Google Patents

Calibration unit for charge / discharge test equipment Download PDF

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JP5727397B2
JP5727397B2 JP2012009077A JP2012009077A JP5727397B2 JP 5727397 B2 JP5727397 B2 JP 5727397B2 JP 2012009077 A JP2012009077 A JP 2012009077A JP 2012009077 A JP2012009077 A JP 2012009077A JP 5727397 B2 JP5727397 B2 JP 5727397B2
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charge
test
discharge
unit
discharge test
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JP2013148459A (en
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慶彦 牛渡
慶彦 牛渡
義紀 谷本
義紀 谷本
山本 哲也
哲也 山本
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富士通テレコムネットワークス株式会社
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Description

  The present invention relates to a calibrator unit that calibrates a charge / discharge test apparatus for a secondary battery.

  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. When manufacturing secondary batteries, it is necessary to check whether the required performance is satisfied by performing a charge test and discharge test under preset conditions, and a charge / discharge test device for inspecting the performance of the secondary battery in the production line Is used (see, for example, Patent Document 1).

  In addition, various techniques have been studied for a calibration method for a production line inspection apparatus (see, for example, Patent Documents 2 and 3).

JP 2010-223896 A Japanese Patent Laid-Open No. 06-011494 JP 2004-125715 A

  However, it is necessary to periodically inspect whether the electrical characteristics such as voltage and current at the time of testing the secondary battery by the charge / discharge test apparatus match the test conditions. For this purpose, for example, a maintenance person must regularly perform a work to check the voltage and current between the output terminals of the charge / discharge test system using a measuring instrument, which not only takes great effort and cost, During calibration, there was a problem that the charge / discharge test apparatus could not be used and the production efficiency of the secondary battery was lowered.

  Further, as a calibration facility, a load resistance for a charge test calibration and a DC battery for a discharge test calibration are required, and there are problems such as downsizing and heat generation.

  In view of the above problems, an object of the present invention is to calibrate a charge / discharge test apparatus used at the time of manufacturing a secondary battery, to reduce the amount of heat generation and to reduce the size, and to greatly improve the production efficiency of the secondary battery. Is to provide a machine unit.

The calibrator unit according to the present invention is a calibrator unit for calibrating a charge / discharge test apparatus used for a test of a secondary battery, wherein the calibrator unit has positive and negative connection terminals arranged in the same manner as the secondary battery and A measuring unit configured with a housing of the same shape, connected to the charge / discharge test apparatus via the connection terminal instead of the secondary battery, and measuring electrical characteristics between the charge / discharge test apparatus; A wireless communication slave device that performs wireless communication with the charge / discharge test device; a unit secondary battery that supplies power to the measurement unit and the wireless communication slave device; and the charge / discharge test device includes: A bi-directional converter that switches between charge and discharge, and the measurement unit does not have a load resistance for a charge test and a power source for a discharge test, and is a current connected in series between the positive and negative connection terminals. Total shunt resistance and on / off switch Is composed of a voltmeter connected in parallel with the on-off switch, when performing the calibration of the charging current characteristics of the charge and discharge test device, the proof press unit, check the on-off switch is controlled by the charging operation said charging current output from the bidirectional converter to flow to said ammeter to return the charging current after the measurement to the bidirectional converter, when performing the calibration of the discharge current characteristics of the charge and discharge test device, the calibration machine unit, turn on the on-off switch, the discharge current output from the controlled the bidirectional converter discharge operation by passing the current meter to return the discharge current after the measurement to the bidirectional converter, the charge when performing the calibration of the charging voltage characteristics of the discharge test device, the proof press unit, turn off the on-off switch, the bidirectional graphics that are controlled in the charging operation If the charging voltage between the positive and negative connection terminals connected to the converter is measured by the voltmeter, calibrated discharge voltage characteristics of the charge and discharge test device, the proof press unit, turn off the on-off switch The discharge voltage between the positive and negative connection terminals connected to the bidirectional converter controlled by the discharge operation is measured by the voltmeter.

In particular, the measurement information of the ammeter or the voltmeter is transmitted from the wireless communication slave unit to the charge / discharge test apparatus side.

  Furthermore, a noise removing resistor is arranged in parallel with the on / off switch.

  The calibrator unit according to the present invention can calibrate a charge / discharge test apparatus used at the time of manufacturing a secondary battery, can be reduced in size with little heat generation, and can greatly improve the production efficiency of the secondary battery.

It is a figure which shows an example of the manufacturing line which performs the test of a secondary battery. It is a figure which shows the example of a connection of the charging / discharging test apparatus 101, the calibration machine unit 102, and the secondary battery 150. FIG. It is a figure which shows the structural example of the charging / discharging test apparatus 101 which concerns on 1st Embodiment, the calibration machine unit 102, and the test management apparatus 103. FIG. 3 is a diagram illustrating a circuit example of a charge / discharge circuit 111. FIG. It is a figure which shows the operation example at the time of charge. It is a figure which shows the operation example at the time of discharge. It is a figure which shows the calibration method of the conventional charge / discharge characteristic. It is a figure which shows the calibration method of the charging / discharging characteristic in this embodiment. 3 is a flowchart showing a processing example of a charge / discharge test apparatus 101. 5 is a flowchart showing a processing example of a proof machine unit 102. 5 is a flowchart illustrating an example of processing at the time of calibration of the test management apparatus 103.

  Hereinafter, embodiments of a calibrator unit according to the present invention will be described in detail with reference to the drawings.

  A plurality of charge / discharge test apparatuses 101 are arranged on a production line for testing a produced secondary battery, and for example, a line is configured for each test content. In the example of FIG. 1, 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 are arranged. Here, the mode A, the mode B, and the mode C are different from each other in test contents such as the magnitude and charge pattern of the charge current, the magnitude and discharge pattern of the discharge current, and the like. As an example, a test in which mode A is trickle charge, mode B is quick charge, and mode C is continuous discharge is performed.

  1, 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,... Are arranged on the test line A. For example, the charge / discharge test device 101a1 is a secondary battery 150_1. A mode A test is performed. In the test line B, 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,... Are arranged. To perform a mode B test. Similarly, in the test line C, a plurality of test devices such as a charge / discharge test device 101c1, a charge / discharge test device 101c2, a charge / discharge test device 101c3,... Are arranged, for example, the charge / discharge test device 101c1 is connected to the secondary battery 150_3. On the other hand, the charge / discharge test apparatus 101c2 performs the mode C test on the secondary battery 150_4.

Here, how to attach a code in this embodiment is defined. In FIG.
Charge / discharge test apparatus 101a1, charge / discharge test apparatus 101a2, charge / discharge test apparatus 101a3, charge / discharge test apparatus 101b1, charge / discharge test apparatus 101b2, charge / discharge test apparatus 101b3, charge / discharge test apparatus 101c1, charge / discharge test apparatus 101c2, charge / discharge A plurality of test apparatuses such as the test apparatus 101c3 are test apparatuses having the same configuration in which a test can be selected in which mode. In the following description, when the contents common to these test apparatuses are described, the charge / discharge test apparatus 101 is simply indicated except for alphabets a *, b *, and c * (* is a number). Further, in the case where the test apparatus is common to the test apparatus of the group performing the mode A test, the charge / discharge test apparatus 101a is described. The same applies to mode B and mode C. Only when a specific charge / discharge test apparatus 101 is pointed out, all symbols are added and expressed, for example, “secondary battery 150_3 is connected to charge / discharge test apparatus 101c1 on test line C”. . The same concept is used for secondary batteries and calibrator units. For example, when all secondary batteries are common, the secondary battery 150 is indicated, and when referring to a specific secondary battery 150, “_number” is used. In addition, it is expressed as “secondary battery 150_3”. In the case of a calibrator unit as well, when it is common to all calibrator units, it is expressed as a calibrator unit 102, and when referring to a specific calibrator unit 102, “_number” is added and “calibrator unit 102_2” is designated. Indicate.

  In general, in the production line for testing the secondary battery 150 as shown in FIG. 1, in order to maintain the quality of the secondary battery 150, it is periodically checked whether the performance of the charge / discharge test apparatus 101 itself, which is a test apparatus, is out of order. You must inspect and calibrate if you are crazy. For example, it is measured whether or not the charging current at the time of performing the charging test of the secondary battery 150 is within a predetermined range determined as a test condition, and when it is out of the predetermined range, the center value of the predetermined range is set. It is necessary to redo. Actually, if the secondary battery 150 that has been tested in the past needs to be retested when it is out of the predetermined range, the adjustment is made early when the secondary battery 150 is out of the predetermined range. It is managed so as not to deviate from.

  Therefore, in this embodiment, instead of the secondary battery 150 to be tested, a calibrator unit 102 having a casing of the same size as the secondary battery 150 is periodically passed through each test line. Here, FIG. 2A is a diagram showing a state in which the secondary battery 150 is connected to the charge / discharge test apparatus 101. Each terminal of the test terminal group 117 of the charge / discharge test apparatus 101 is arranged to correspond to each terminal of the terminal group 151 of the secondary battery 150 on a one-to-one basis. During the test, the terminal group 117 and the terminal group 151 come into contact with each other, and the test of the secondary battery 150 is started. On the other hand, FIG. 2B is a diagram showing a state in which the calibration machine unit 102 is connected to the charge / discharge test apparatus 101. The calibrator unit 102 includes a casing having the same size as the secondary battery 150 and a terminal group 118 having the same arrangement as the terminal group 151 of the secondary battery 150. At the time of calibration, the terminal group 117 and the terminal group 118 come into contact with each other, and calibration of the charge / discharge test apparatus 101 is started.

  In the example of FIG. 1, a method for moving the secondary battery 150, the calibration unit 102, etc. to the position of the charge / discharge test apparatus 101 in the next test mode is not illustrated. Alternatively, it may be automatically distributed by a conveyor or the like. Further, the calibrator unit 102 may be moved only within a group of the same test mode, or may be moved to a group of different test modes. Furthermore, when the interval for flowing the calibrator units 102 is long or when the number of calibrator units 102 is large, a rack 160 for temporarily waiting the calibrator units 102 may be provided. In this case, the calibration machine unit 102 is moved to the standby rack 160 by an operator or a conveyor, and flows to the charge / discharge test apparatus 101 in the target test mode at the time of calibration. The calibration schedule is determined in advance as a manufacturing process or manufacturing inspection item. When an operator performs the calibration schedule, the calibration is performed according to the calibration schedule. When the calibration schedule is automatically performed, a plurality of charge / discharge test apparatuses 101 are managed. Calibration is performed according to the calibration schedule on the test management apparatus 103 side. Further, a method for acquiring the position of the own unit in the factory such as on the charge / discharge test apparatus 101, the standby rack 160 and the line to which the calibrator unit 102 is connected will be described in detail later.

  FIG. 3 is a diagram showing a configuration example in the case where a calibrator unit 102 is connected to the charge / discharge test apparatus 101 to perform a charge / discharge test. Here, the charge / discharge test apparatus 101 is connected to the test management apparatus 103 side via a LAN. Note that the test management device 103 is arranged for each test group, and may manage and control only the charge / discharge test devices 101 in the same test group, or may manage the charge / discharge test devices 101 of all test groups. -You may make it control. In FIG. 3, the charge / discharge test apparatus 101 and the test management apparatus 103 are separated for easy understanding. However, the charge / discharge test apparatus 101 may include the function of the test management apparatus 103 as the charge / discharge test apparatus 101. The charge / discharge test apparatus 101 and the test management apparatus 103 may be combined to form a charge / discharge test system. The charge / discharge test apparatus in each claim of the present application includes the functions of both the charge / discharge test apparatus 101 and the test management apparatus 103.

  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.

  The charging / discharging circuit 111 has a terminal group 117 for connecting the secondary battery 150 and the calibrator unit 102. In the example of FIG. 3, the terminal group 117 is composed of 10 sets of connection terminals from ch01 to ch10. The The charging / discharging circuit 111 is controlled by the control unit 112 such as the magnitude and charging time of the charging current, the magnitude and discharging time of the discharging current, and measures the impedance characteristics, voltage, temperature, and the like of the secondary battery 150. To 112. Note that the secondary battery 150 is configured such that a plurality of cells are stacked, and the characteristics of each cell can be tested by connecting the terminals of the charge / discharge test apparatus 101 for each cell.

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

  The power supply unit 113 is connected to a commercial power supply (such as AC100v) and supplies power necessary for operation to 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 wirelessly connects to a plurality of calibration machine units 102, transmits information for controlling the calibration machine unit 102, receives measurement information of the calibration machine unit 102, 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 all test groups, sets the test contents before the test, monitors the test status when the test is in progress, Acquire and manage results.

  On the other hand, in FIG. 3, the calibration machine unit 102 includes, for example, a multimeter 121, a wireless slave device 122, a voltage conversion unit 123, and a battery 124.

  The multimeter 121 controls a measurement circuit 125 that measures current characteristics, voltage characteristics, impedance, and the like of each channel of the terminal group 118, and measurement control that controls measurement contents of the measurement circuit 125 and reads measurement data of the measurement circuit 125. Part 126. The measurement control unit 126 is connected to the wireless slave unit 122 via a LAN (which may be a dedicated wiring), and measurement data is wirelessly transmitted from the wireless slave unit 122 to the test management apparatus 103 side.

  The wireless slave device 122 establishes a wireless line with the wireless master device 132 of the test management device 103, and the information (measurement data, voltage of the battery 124, alarm, etc.) on the calibrator unit 102 side is stored on the test management device 103 side. Send to.

  The voltage converter 123 converts the voltage supplied from the battery 124 into a voltage necessary for the operation of the multimeter 121 and the wireless slave device 122. In the example of FIG. 3, the voltage of DC16v output from the battery 124 is converted to AC100v that is the same as the commercial power supply and supplied to the multimeter 121, and is converted to DC24v and supplied to the wireless slave unit 122.

  The battery 124 is configured by a secondary battery such as a lithium ion battery. Thus, the calibrator unit 102 does not require a power cord or the like and can be handled stand-alone like the product secondary battery 150, and can be mixed and flowed between the secondary batteries 150 in the test line. . Note that the calibrator unit 102 in FIG. 3 uses a commercial product used as a multimeter 121 with a commercial power source that allows easy calibration management, and therefore requires AC100v, has a LAN interface, but developed a dedicated measuring instrument. The battery 124 may be directly connectable. Similarly, the wireless slave device 122 is not a commercially available product corresponding to the wireless master device 132 but may be equipped with a dedicated wireless device that can be directly connected to the battery 124 or the multimeter 121. In such a case, it is not necessary to use the voltage converter 123 or the LAN. In any case, the calibrator unit 102 according to the present embodiment has a casing and a terminal group 118 equivalent to the secondary battery 150, a circuit that wirelessly communicates with the test management device 103 side, and a battery 124. It is only necessary to realize a stand-alone operation, and the present invention is not limited to the configuration example of FIG.

  Here, a circuit example in the case where the secondary battery 150 or the calibration machine unit 102 is connected to the charge / discharge circuit 111 of the charge / discharge test apparatus 101 will be described with reference to FIG. 4, the charge / discharge circuit 111 has the same charge / discharge circuit for each channel. For example, the ch charge / discharge circuit 161 for ch01, the ch charge / discharge circuit 162 for ch02, and the ch charge / discharge circuit 163 for ch10. Are arranged respectively. Since all circuit configurations are the same, the channel charge / discharge circuit 161 will be described as a representative. The ch charge / discharge circuit 161 includes a regenerative inverter 164 connected to the power supply unit 113, a discharge test boost circuit 165, a charge test chopper circuit 166, and a bias power supply 167.

  The regenerative inverter 164 supplies power to the chopper circuit 166 during charging, and recovers power from the boost circuit 165 during discharging.

  The boost circuit 165 includes an inductor, a diode, a capacitor, and a switch including a switching element, and gives a load during discharging. For example, when the test is performed with a discharge current of 100 A, the control unit 112 controls the current flowing through the boost circuit 165 to be 100 A. The bias power supply 167 inserted in series in the circuit is a power supply that gives an offset of about several volts so that the tested side (secondary battery side) can discharge to 0 volts.

  The chopper circuit 166 includes an inductor, a diode, a capacitor, and a switch using a switching element, and supplies power during charging.

  The regenerative inverter 164, the boost circuit 165, and the chopper circuit 166 are controlled by the control unit 112. Further, the ch charge / discharge circuit 161 performs a charge / discharge test of a part of the cells of the secondary battery 150 described in FIG. Here, a part of the cells of the secondary battery 150 is referred to as a secondary battery 150-n.

  FIG. 5A is a diagram illustrating a state when the secondary battery 150-n is connected to the chopper circuit 166. In FIG. 5A, the chopper circuit 166 outputs a charging current from the + terminal 1 and is refluxed to the −terminal 2 through the secondary battery 150-n. Thus, the charge test of the secondary battery 150-n is performed.

  On the other hand, FIG. 5B is a diagram showing a state when the calibrator unit 102 is connected to the chopper circuit 166. In FIG. 5B, the chopper circuit 166 outputs the charging current from the positive terminal 1 and returns to the negative terminal 2 through the calibrator unit 102. At this time, inside the measuring circuit 125 on the calibrator unit 102 side, the charging current input from the + terminal 1 is short-circuited by the switch and is returned to the − terminal 2. Then, the charging current is measured by the ammeter 168, and the measured value is output to the measurement control unit 126. In this way, the calibration test is performed, and the measured value is adjusted so as to become the set value of the charging current of the ch charge / discharge circuit 161.

  FIG. 6A is a diagram showing a state when the secondary battery 150-n is connected to the boost circuit 165 via the bias power source 167. In FIG. 6A, the discharge current from the secondary battery 150-n is input from the + terminal 1 and flows into the boost circuit 165 serving as a load via the bias power source 167. Thus, the charge test of the secondary battery 150-n is performed.

  On the other hand, FIG. 6B is a diagram showing a state when the calibrator unit 102 is connected to the boost circuit 165. 6B, when the discharge test is performed, the bias power source 167 is short-circuited between the + terminal 1 and the − terminal 2 by a switch via the ammeter 169 in the measurement circuit 125 of the calibrator unit 102. To recirculate the discharge current. Then, the discharge current is measured by the ammeter 169 and the measurement value is output to the measurement control unit 126. In this way, the calibration test is performed, and the load by the boost circuit 165 is adjusted so that the measured value becomes the set value of the discharge current of the ch charge / discharge circuit 161.

Here, when performing the discharge test, the calibrator unit 102 according to the present embodiment shorts between the + terminal 1 and the − terminal 2 with a switch via the ammeter 169 as shown in FIG. 6. Thus, loss can be prevented from occurring. Conventionally, since a dummy battery is connected during calibration, there is a problem that loss occurs. Alternatively, even when calibration is performed by short-circuiting, the maintenance person must manually short-circuit and measure the current value, which is troublesome. On the other hand, in the calibrator unit 102 according to the present embodiment, the switch in the measurement circuit 125 of the calibrator unit 102 is automatically closed by a series of calibration programs, so that it is possible to save time and loss. it can.
[Calibration method for charge / discharge characteristics]
Next, the charge / discharge characteristic calibration method will be described in detail. First, a conventional calibration method will be described with reference to FIG. 7 so that the features of the calibration unit 102 for the charge / discharge test apparatus in this embodiment can be easily understood. In FIG. 7, the same reference numerals as those in FIGS. 3, 4 to 6 denote the same components.

  FIG. 7A shows a conventional method for measuring the discharge voltage and the discharge current. In FIG. 7A, conventionally, a DC stabilized power supply DVR is connected to the + terminal 1 and the − terminal 2 of each channel of the charge / discharge circuit 111 of the charge / discharge test apparatus 101. Then, the discharge current characteristic is measured with an ammeter 169 inserted in series with the DC stabilized power supply DVR, and the discharge voltage characteristic is measured with a voltmeter 170 connected in parallel with the DC stabilized power supply DVR.

  FIG. 7B shows a conventional method for measuring the charging voltage and the charging current. In FIG. 7B, conventionally, the load resistance Rf is connected to the + terminal 1 and the −terminal 2 of each channel of the charge / discharge circuit 111 of the charge / discharge test apparatus 101. The charging current characteristic is measured by an ammeter 169 inserted in series with the load resistance Rf, and the charging voltage characteristic is measured by a voltmeter 170 connected in parallel with the load resistance Rf.

  However, in the conventional method, there is a problem that the load resistance Rf generates heat due to the current flowing through the load resistance Rf when measuring the charging current characteristics, and the calibrator unit 102 has the same shape as the secondary battery 150 as in this embodiment. In the case of using the case, there is a problem in downsizing. Therefore, in the calibrator unit 102 for the charge / discharge test apparatus according to the present embodiment, as shown in FIG.

  FIG. 8 is a diagram illustrating a circuit example of the calibrator unit 102 connected to the + terminal 1 and the − terminal 2 of each channel of the charge / discharge circuit 111 of the charge / discharge test apparatus 101. In FIG. 8, the same reference numerals as those in FIGS. 3, 4 to 6 denote the same components. Further, the charge / discharge circuit 111 shown in FIGS. 8A to 8D is composed of a bidirectional converter 261 unlike the examples of FIGS. The bidirectional converter 261 includes, for example, switches 181, 182, 183, 184, coils 185, 186, and capacitors 187, 188, and the on width of the switches 181 and 184 (the off width of the switches 182 and 183). By changing, charging and discharging can be switched. Thereby, the calibrator unit 102 side can perform a charge test and a discharge test without the load resistance Rf and the DC stabilized power supply DVR. The bi-directional converter 261 is the same as a bi-directional converter that is generally used, and detailed description thereof will be omitted. However, the magnitude of the current passed through the calibrator unit 102 by the on / off operation of the switches 181, 182, 183, and 184 The direction can be freely controlled.

  FIG. 8A shows a configuration example in the case of measuring discharge characteristics, and the measurement circuit 125 includes an ammeter 169 and a switch 171. In FIG. 8A, the bidirectional converter 261 reverses the current from the negative terminal 2 to the positive terminal 1 and calibrates the discharge characteristics by the calibrator unit 102. In this case, in the measurement circuit 125 of the calibrator unit 102, the switch 171 is closed, and the discharge current flows in the direction of the positive terminal 1 of the bidirectional converter 261 through the shunt resistor of the ammeter 169. Thereby, the discharge current can be measured and calibrated with the ammeter 169.

  FIG. 8B shows a configuration example in the case of measuring the charging characteristics. The measurement circuit 125 has the switch 171 closed as in FIG. 8A, but the direction of the current flowing from the bidirectional converter 261 is Different. In FIG. 8B, the bidirectional converter 261 passes a current from the + terminal 1 to the −terminal 2 and calibrates the charging characteristics by the calibrator unit 102. In this case, in the measurement circuit 125 of the calibrator unit 102, the switch 171 is closed, and the charging current flows in the direction of the negative terminal 2 of the bidirectional converter 261 through the shunt resistor of the ammeter 169. Thereby, the charging current can be measured and calibrated with the ammeter 169.

  FIG. 8C shows a configuration example in the case of measuring the voltage at the time of charging / discharging, and the measuring circuit 125 includes an ammeter 169, a voltmeter 170, and a switch 171. In this case, in the measurement circuit 125 of the calibrator unit 102, the switch 171 is opened, and the voltage characteristic of the bidirectional converter 261 can be measured and calibrated by the voltmeter 170 via the shunt resistor of the ammeter 169.

  FIG. 8D shows an application example in which a resistor 172 is arranged in parallel with the switch 171 and the influence of noise during voltage measurement can be suppressed. As the resistor 172, a resistor having a relatively high resistance that hardly generates heat is used.

  As described above, the calibrator unit 102 according to the present embodiment does not need to use the load resistance Rf and the DC stabilized power supply DVR as in the conventional case, and does not need to consider the heat generated by the load resistance Rf, and thus is suitable for downsizing. In particular, like the calibrator unit 102 according to the present embodiment, it can be accommodated in a casing having the same shape as the secondary battery 150.

  Next, processing during calibration of the charge / discharge test apparatus 101 and the calibration machine unit 102 will be described with reference to the flowchart of FIG.

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

  Note that the detection of the connection is performed, for example, because the impedance between the terminals changes when the terminal group 117 of the charge / discharge circuit 111 is connected to the secondary battery 150 (or the calibrator unit 102). By detecting it, the presence or absence of connection can be detected. Alternatively, as described with reference to FIG. 2, the mechanical switch is turned on / off by the operation in which the terminal group 117 of the charge / discharge test apparatus 101 is pressed against the terminal group 151 of the secondary battery 150 (or the terminal group 118 of the calibrator unit 102). You may detect as follows.

  (Step S102) The controller 112 of the charge / discharge test apparatus 101 performs a charge / discharge test in a preset test mode. For example, the voltage change and the temperature change when the first 30 minutes are charged with the charging current 2A and the next 30 minutes are charged with the charging current 1A are tested.

  (Step S103) The control unit 112 of the charge / discharge test apparatus 101 determines whether or not the test is completed, and continues the operation of step S102 until the test is completed. And when a test is complete | finished, it progresses to the next step.

  (Step S104) The control unit 112 of the charge / discharge test apparatus 101 notifies the test result of the control personal computer 133 of the test management apparatus 103 via the LAN.

In the description of FIG. 9, the result is notified to the control personal computer 133 after the end of the test, but the value under test may be sequentially transmitted to the control personal computer 133. In addition, when the charge / discharge test apparatus 101 transmits the test result to the control personal computer 133, information such as the serial number of the secondary battery 150 that has been tested and the identification number of the charge / discharge test apparatus 101 is included along with the test result. You may make it notify to the control personal computer 133. FIG. Furthermore, information such as the test date and time may be notified, or date and time information may be added on the control personal computer 133 side. In any case, the control personal computer 133 side manages information such as test contents, test results, test date and time, corresponding to the serial number of the secondary battery. An example is shown below.
・ Secondary battery: SN = 123456
・ Test date: 20110922, 13:10
・ Test content: Mode A
Test result (voltage): voltage before / after charging = 11v / 18v
Test result (temperature): Temperature before / after charging = 15 ° C./40° C.
Here, as a method for the charge / discharge test apparatus 101 to obtain the serial number of the secondary battery 150, for example, a bar code or an RFID tag is attached around the terminal group 151 of the secondary battery 150, and the charge / discharge test apparatus 101 is used. A barcode reader, RFID reader, or the like may be mounted around the terminal group 117 and controlled by the control unit 112. Further, this mechanism may be used for the connection determination process in step S101. A similar mechanism may be applied to the calibrator unit 102 to acquire the identification number of the calibrator unit 102 connected to the charge / discharge test apparatus 101.

  In this way, the charge / discharge test apparatus 101 performs the charge / discharge test of the secondary battery 150.

  Next, an operation example of the calibration machine unit 102 will be described with reference to FIG. Note that the calibrator unit 102 in this embodiment also serves as a control unit in which the wireless slave unit 122 controls the entire calibrator unit 102. However, as described in FIG. 4, the calibrator unit 102 controls the entire calibrator unit 102. A unit control unit 128 may be provided. The unit controller 128 may control the multimeter 121 and the wireless slave device 122.

  (Step S201) The calibration machine unit 102 detects whether or not the charge / discharge test apparatus 101 is connected, and waits until it is connected.

  As in the charge / discharge test apparatus 101 described above, the connection is detected by changing the impedance between the terminals when the terminal group 118 of the multimeter 121 is connected to the terminal group 117 of the charge / discharge test apparatus 101. The charge current output from the charge / discharge test apparatus 101 may be detected. Alternatively, as described with reference to FIG. 2, an operation in which the terminal group 118 of the calibrator unit 102 is pressed against the terminal group 117 of the charge / discharge test apparatus 101 may be detected by a mechanical switch or the like. Alternatively, as described above, when identifying the calibration machine unit 102 connected by a barcode, RFID, or the like, calibration is performed wirelessly from the charge / discharge test apparatus 101 that has read this information via the test management apparatus 103. You may make it notify to the radio | wireless subunit | mobile_unit 122 by the side of the machine unit 102. FIG.

  (Step S <b> 202) The calibrator unit 102 performs calibration measurement for monitoring changes in charge / discharge current and voltage of the charge / discharge test performed by the charge / discharge test apparatus 101, and outputs the measurement to the wireless slave unit 122.

  (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. The calibration unit 102 may transmit information such as the identification number of the calibration unit 102 itself to the test management apparatus 103 together with the measurement result when transmitting the measurement result to the test management apparatus 103. . Alternatively, the identification number of the charge / discharge test apparatus 101 to be measured may be transmitted, or the correspondence between the calibrator unit 102 and the charge / discharge test apparatus 101 may be managed by the control personal computer 133 on the test management apparatus 103 side. . Further, information such as the test date and time may be transmitted, or date and time information may be added on the control personal computer 133 side of the test management apparatus 103. In any case, on the control personal computer 133 side, information such as measurement content, measurement value, and measurement date / time is associated with the identification number of the charge / discharge test apparatus 101 and the identification number of the calibration unit 102. Is managed.

  (Step S204) The calibrator unit 102 determines whether or not the calibration test is completed, and continues the operation of step S202 until the calibration test is completed. And when measurement is complete | finished, it progresses to the next step. The end of the calibration test may be determined by detecting that the connection of the terminal group 118 to the terminal group 117 of the charge / discharge test apparatus 101 has been released, or by measuring a test pattern in advance. The end may be determined. Here, the secondary battery 150 and the calibrator unit 102 may be a system that automatically moves on the line and is automatically connected to the charge / discharge test apparatus 101, The calibrator unit 102 may be connected to the charge / discharge test apparatus 101 on the line. For example, when the secondary battery 150 or the calibration machine unit 102 automatically moves on the line and connects to the charge / discharge test apparatus 101 or performs standby control with the standby rack 160, the test management apparatus 103 is used. It is executed based on a process stored in advance.

  (Step S205) The calibrator unit 102 notifies the test management apparatus 103 that the calibration test has been completed. Since the test end notification is transmitted from the charge / discharge test apparatus 101 to the test management apparatus 103 side, it is not necessary to notify the end of the calibration test.

  In this way, the charge / discharge current and voltage are given to the calibrator unit 102 in the same manner as the charge / discharge test apparatus 101 tests the secondary battery 150, and the test pattern such as the charge current and voltage under test is preliminarily set. The test management apparatus 103 can check whether it conforms to the set test regulations and perform calibration.

  Next, an operation example of the test management apparatus 103 will be described with reference to FIG. Note that the test management apparatus 103 is controlled by the control personal computer 133. Further, the flowchart of FIG. 11 describes only the calibration process performed by the control personal computer 133. In fact, the control personal computer 133 uses the serial of the secondary battery 150 as the production management of the secondary battery 150 as described above. Processing such as management of test results for each number is performed, and calibration schedule management and control of all charge / discharge test apparatuses 101 under its control are performed.

  Here, the calibrator unit 102 is connected to the charge / discharge test apparatus 101, the test in the test mode in which the charge / discharge test apparatus 101 is set is started, and the calibrator unit 102 starts calibration measurement accordingly. . It is assumed that the identification numbers of the charge / discharge test apparatus 101 and the calibration machine unit 102 have been acquired from each apparatus in advance as described above.

  (Step S301) The control personal computer 133 stands by until it receives a measurement value from the calibrator 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 measurement value is received from the calibrator unit 102, the process proceeds to the next step. The received measurement value includes the identification number of the calibration machine unit 102, the measurement date and time, and the like. Further, when the calibrator unit 102 has acquired the identification number of the charge / discharge test apparatus 101, this information may be included, or the position information of the calibrator unit 102 is acquired on the test management apparatus 103 side. In this case, it is possible to know which charge / discharge test apparatus 101 is connected to by this position information.

  (Step S302) The control personal computer 133 compares the measured value received in Step S301 with the output set value (the test value of the secondary battery 150) set in the charge / discharge test apparatus 101. If the comparison result is not within the predetermined range set in advance, the process proceeds to step S303. If the comparison result is within the predetermined range, the process proceeds to step S304.

  For example, when the charge voltage output range is set to 18v ± 0.5v from ch01 of the terminal group 107 of the charge / discharge test apparatus 101, the actual measurement of ch01 of the terminal group 108 of the multimeter 121 of the calibrator unit 102 is performed. If the voltage is 16v, the charging voltage is out of the output range, and the process proceeds to step S303. Here, as described above, when the output set value of the charge / discharge test apparatus 101 and the actually measured value are different from each other and completely deviate from the test specification of the secondary battery 150, it becomes a serious problem in manufacturing. All the past secondary batteries 150 tested by the same charge / discharge test apparatus 101 must be retested. Therefore, it is actually desirable to set a predetermined range that is stricter than the test specifications. As a result, when there is a deviation from the predetermined range but the test specification is satisfied, that is, when there is a possibility that the test specification may be lost if left unattended, the test specification can be adjusted to have a sufficient margin.

  (Step S303) The control personal computer 133 adjusts so as to increase the output voltage of ch01 of the terminal group 107 of the charge / discharge test apparatus 101 according to the comparison result of step S302. In the above example, the control personal computer 133 instructs the control unit 112 of the charge / discharge test apparatus 101 to increase the output voltage of ch01 by 2 V via the HUB 131. Receiving this, the control unit 112 controls the charge / discharge circuit 111 to increase the output voltage of ch01 of the charge / discharge circuit 111 by 2v.

  After the adjustment is performed in this way, the process returns to step S301 to wait for the next measurement result to be sent from the calibrator unit 102. Then, when the measurement value of the same ch01 is received next, the result of the previous adjustment is reflected, and it can be confirmed whether the adjustment is within a predetermined range. If the adjustment is insufficient, the same operation is repeated until the adjustment is within a predetermined range.

  (Step S304) The control personal computer 133 ends the series of calibration processes for the charge / discharge test apparatus 101 when it receives a test end notification from the charge / discharge test apparatus 101, and returns to step S301 when it does not end. If the configuration does not end normally (for example, if it cannot be set to a normal value regardless of the adjustment in step S303), a calibration error is displayed on the screen of the control personal computer 133 together with the identification number of the charge / discharge test apparatus 101. And prompts the maintenance manager to stop using the charge / discharge test apparatus 101.

(Step S305) The control personal computer 133 records and manages the result of the calibration process of the charge / discharge test apparatus 101 on a hard disk in the personal computer. An example is shown below.
Identification number of charge / discharge test apparatus 101: 1112
・ Calibration date and time: October 3, 2011 6:00
・ Calibrator unit: Identification number = 0033
Calibration result: normal In this manner, the calibration unit 102 can automatically calibrate the charge / discharge test apparatus 101.

  As described above, the calibrator unit 102 according to the present embodiment can automatically calibrate the charge / discharge test apparatus 101 used when the secondary battery 150 is manufactured, and is periodically calibrated by a maintenance person. Since the charge / discharge test apparatus 101 can be calibrated quickly, the production efficiency of the secondary battery 150 can be improved. In particular, the calibrator unit 102 according to the present embodiment includes the measurement circuit 125 including the shunt resistor and the switch 171, and thus can be reduced in size with little heat generation and housed in a casing having the same shape as the secondary battery 150. can do. As described above, the charge / discharge circuit 111 of the charge / discharge test apparatus 101 is preferably constituted by the bidirectional converter 261.

  Further, the calibrator unit and the charge / discharge test apparatus according to the present invention have been described with reference to the respective embodiments, but can be implemented in various other forms without departing from the spirit or main features thereof. . For this reason, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The present invention is defined by the claims, and the present invention is not limited to the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

101, 101 a 1, 101 a 2, 101 a 3, 101 b 1, 101 b 2, 101 b 3, 101 c 1, 101 c 2, 101 c 3... Management device 111 ... Charge / discharge circuit 112 ... Control unit 113 ... Power source 117 ... Terminal group 118 ... Terminal group 121 ... Multimeter 122 ... Wireless handset 123 ... Voltage converter 124 ... Battery 125 ... Measurement circuit 126 ... Measurement control unit 127 ... Charge circuit 128 ... Unit control unit 131 ... HUB
132 ... Wireless master 133 ... Control personal computer 141 ... Switching circuit 142 ... Position information acquisition unit 150, 150_1, 150_2, 150_3, 150_4 ... Secondary battery 151 ... Terminal group 160 ..Stand-by racks 161, 162, 163... Ch charge / discharge circuit 164... Regenerative inverter 165... Boost circuit 166 .. Chopper circuit 167 .. Bias power supply 168, 169. .... Voltmeter 171 ... Switch 261 ... Bidirectional converter

Claims (3)

  1. In a calibrator unit for calibrating a charge / discharge test apparatus used for a secondary battery test,
    The calibration unit is
    Consists of positive and negative connection terminals and the same shape housing as the secondary battery,
    A measuring unit for measuring electrical characteristics between the charge / discharge test apparatus connected to the charge / discharge test apparatus via the connection terminal instead of the secondary battery;
    A wireless communication slave that performs wireless communication with the charge / discharge test apparatus;
    A unit secondary battery for supplying power to the measurement unit and the wireless communication slave unit;
    The charge / discharge test apparatus has a bidirectional converter for switching between charge and discharge,
    The measuring unit does not have a load resistance for a charge test and a power source for a discharge test, and is connected in parallel with a shunt resistor and an on / off switch of an ammeter connected in series between the positive and negative connection terminals. Consists of connected voltmeters,
    When the charge current characteristic of the charge / discharge test apparatus is calibrated , the calibrator unit turns on the on / off switch, and supplies the charge current output from the bidirectional converter controlled by the charge operation to the ammeter. the charging current after the measurement by supplying to return to the bidirectional converter,
    When calibrating the discharge current characteristics of the charge / discharge test apparatus, the calibrator unit turns on the on / off switch and supplies the discharge current output from the bidirectional converter controlled by the discharge operation to the ammeter. the discharge current after measurement by flowing to return to the bidirectional converter,
    When calibrating the charge voltage characteristics of the charge / discharge test apparatus, the calibrator unit turns off the on / off switch and connects between the positive and negative connection terminals connected to the bidirectional converter controlled by a charge operation . Measure the charging voltage with the voltmeter,
    When calibrating the discharge voltage characteristics of the charge / discharge test apparatus, the calibrator unit turns off the on / off switch and connects the positive and negative connection terminals connected to the bidirectional converter controlled by a discharge operation . A calibrator unit that measures a discharge voltage with the voltmeter.
  2. The calibrator unit according to claim 1,
    The calibrator unit, wherein the measurement information of the ammeter or the voltmeter is transmitted from the wireless communication slave unit to the charge / discharge test apparatus side.
  3. The calibrator unit according to claim 1 or 2,
    A calibrator unit comprising a noise removing resistor arranged in parallel with the on / off switch.
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JP6017848B2 (en) * 2012-06-14 2016-11-02 住友重機械工業株式会社 Charging / discharging inspection device, calibration device for calibrating charging / discharging inspection device, and calibration method
KR101574969B1 (en) * 2013-09-24 2015-12-21 주식회사 엘지화학 Precise Detector of Charge Current for Charge-Discharge Device
JP6269277B2 (en) * 2014-04-11 2018-01-31 株式会社富士通テレコムネットワークス福島 Calibration unit for charge / discharge test equipment
JP2016076399A (en) * 2014-10-07 2016-05-12 日鉄住金テックスエンジ株式会社 Current/voltage calibration method for charge/discharge power source, and load device for calibration therefor
JP6397720B2 (en) * 2014-10-22 2018-09-26 日鉄住金テックスエンジ株式会社 Voltage calibration method for charge / discharge power supply and apparatus for voltage calibration
JP6460854B2 (en) * 2015-03-12 2019-01-30 株式会社富士通テレコムネットワークス福島 Charge / discharge test system, calibration unit and calibration method
CN105044614B (en) * 2015-08-05 2017-12-08 国家电网公司 A kind of accelerated test system and method for single-phase electric energy meter battery life

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JP2003219565A (en) * 2002-01-18 2003-07-31 Japan Control Engineering Co Ltd Method and apparatus for calibrating battery charging/ discharging system
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