WO2022044775A1 - Power storage device and life determination method - Google Patents

Power storage device and life determination method Download PDF

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Publication number
WO2022044775A1
WO2022044775A1 PCT/JP2021/029327 JP2021029327W WO2022044775A1 WO 2022044775 A1 WO2022044775 A1 WO 2022044775A1 JP 2021029327 W JP2021029327 W JP 2021029327W WO 2022044775 A1 WO2022044775 A1 WO 2022044775A1
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WO
WIPO (PCT)
Prior art keywords
inspection
inspection data
power storage
life
battery
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PCT/JP2021/029327
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French (fr)
Japanese (ja)
Inventor
速人 田和
大助 小西
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株式会社Ｇｓユアサ
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Publication of WO2022044775A1 publication Critical patent/WO2022044775A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a technique for determining the life of a storage cell.
  • Patent Document 1 has the following description regarding the charge / discharge life determination control device for the secondary battery.
  • Charging / discharging is detected by detecting the terminal voltage of the battery unit with a voltmeter, the charging / discharging number is stored in the charge / discharge count detection storage unit, and the charge / discharge count is displayed on the alarm display unit.
  • the charge / discharge count comparison control circuit compares the detected charge / discharge count with the preset charge / discharge life count, and when the difference becomes zero, the alarm display unit issues a warning and the battery main circuit cutoff operation circuit.
  • the battery main circuit cutoff switch is opened to cut off the discharge path of the battery unit.
  • the problem is to determine the life of the storage cell without using the information on the frequency of use (charge / discharge frequency) of the storage cell.
  • the power storage device includes a power storage cell, an input unit for inputting inspection data regarding the life of the power storage cell measured using an inspection device, a storage unit for storing the input inspection data as an inspection history, and a control unit.
  • the control unit includes the input current inspection data and the past inspection data stored as the inspection history in the storage unit. Based on the above, the life of the storage cell is determined.
  • the above technology can be applied to the method of determining the life of the storage cell.
  • the life of the storage cell can be determined without knowing the frequency of use of the storage cell.
  • FIG. 1 An exploded perspective view of the battery Plan view of secondary battery cell Cross section of secondary battery cell Battery schematic Diagram showing aircraft and airport Circuit diagram of battery and inspection device Circuit diagram of battery and inspection device Circuit diagram of battery and inspection device Discharge capacity inspection sequence The figure which shows the inspection history of the discharge capacity C The figure which shows the life curve of a secondary battery cell
  • the power storage device includes a power storage cell, an input unit for inputting inspection data regarding the life of the power storage cell measured using an inspection device, a storage unit for storing the input inspection data as an inspection history, and a control unit.
  • the control unit includes the input current inspection data and the past inspection data stored as the inspection history in the storage unit. Based on the above, the life of the storage cell is determined.
  • the life of the storage cell is determined based on the current inspection data and the past inspection data stored as the inspection history in the storage unit. Since the life of the storage cell is determined from the accumulated inspection data, the life of the storage cell can be determined even if the usage status and frequency of use of the storage cell during the inspection are not known.
  • the inspection data is stored in the inspection device, only the inspection result performed by the inspection device can be reflected in the life judgment, so that there is a problem in the life judgment accuracy. This is especially noticeable when the inspection cycle is long or when there are multiple inspection instruments used for inspection.
  • the inspection data can be accumulated in the storage unit and reflected in the life determination. Therefore, it is possible to store a large amount of inspection data as compared with the case where the inspection data is stored in the inspection device, so that the life of the power storage device can be determined with high accuracy.
  • the storage unit stores a plurality of inspection data measured at a plurality of maintenance sites as an inspection history
  • the control unit stores the current inspection data input to the input unit and the inspection history in the storage unit.
  • the life of the power storage cell may be determined based on a plurality of inspection data measured at a plurality of stored maintenance sites.
  • the control unit may obtain a life curve showing the time transition of the inspection data based on the current inspection data and the past inspection data, and determine the life of the storage cell from the obtained life curve. In this configuration, it is possible to predict the change over time of the inspection data from the life curve and determine the replacement time of the storage cell.
  • the control unit may update the life curve of the storage cell based on the current inspection data and the inspection data performed in the past each time the inspection data of the storage cell is input.
  • the number of inspections of the storage cell increases, the number of data increases and the accuracy of the life curve increases. Therefore, the life of the storage cell can be determined with high accuracy.
  • the input unit is a communication unit capable of communicating with the inspection device, and may receive the inspection data from the inspection device by communication. With this configuration, it is not necessary for the operator to input the inspection data into the power storage device, so that the burden on the operator can be reduced.
  • the battery 50 includes an assembled battery 60, a circuit board unit 65, and an accommodating body 71.
  • the housing body 71 includes a main body 73 made of a synthetic resin material and a lid body 74.
  • the main body 73 has a bottomed tubular shape.
  • the main body 73 includes a bottom surface portion 75 and four side surface portions 76.
  • An upper opening 77 is formed at the upper end portion by the four side surface portions 76.
  • the accommodating body 71 accommodates the assembled battery 60 and the circuit board unit 65.
  • the assembled battery 60 has 12 secondary battery cells 62.
  • the 12 secondary battery cells 62 are connected in 3 parallels and 4 in series.
  • the circuit board unit 65 is arranged above the assembled battery 60.
  • three secondary battery cells 62 connected in parallel are represented by one battery symbol.
  • the secondary battery cell 62 is an example of a “storage cell”.
  • the lid 74 closes the upper opening 77 of the main body 73.
  • An outer peripheral wall 78 is provided around the lid 74.
  • the lid body 74 has a protrusion 79 having a substantially T-shape in a plan view.
  • the external terminal 51 of the positive electrode is fixed to one corner, and the external terminal 52 of the negative electrode is fixed to the other corner.
  • the battery 50 supplies electric power to the loads connected to the positive and negative external terminals 51 and 52.
  • the secondary battery cell 62 contains an electrode body 83 together with a non-aqueous electrolyte in a rectangular parallelepiped case 82.
  • the secondary battery cell 62 is, for example, a lithium ion secondary battery.
  • the case 82 has a case body 84 and a lid 85 that closes an opening above the case body 84.
  • the electrode body 83 is porous between the negative electrode element in which the active material is applied to the base material made of copper foil and the positive electrode element in which the active material is applied to the base material made of aluminum foil.
  • a separator made of a resin film is arranged.
  • the positive electrode terminal 87 is connected to the positive electrode element via the positive electrode current collector 86, and the negative electrode terminal 89 is connected to the negative electrode element via the negative electrode current collector 88.
  • the positive electrode current collector 86 and the negative electrode current collector 88 include a flat plate-shaped pedestal portion 90 and leg portions 91 extending from the pedestal portion 90. A through hole is formed in the pedestal portion 90.
  • the leg 91 is connected to a positive electrode element or a negative electrode element.
  • the positive electrode terminal 87 and the negative electrode terminal 89 include a terminal main body portion 92 and a shaft portion 93 protruding downward from the center portion of the lower surface thereof.
  • the terminal body portion 92 and the shaft portion 93 of the positive electrode terminal 87 are integrally molded of aluminum (single material).
  • the terminal body portion 92 is made of aluminum and the shaft portion 93 is made of copper, and these are assembled.
  • the terminal body 92 of the positive electrode terminal 87 and the negative electrode terminal 89 is arranged at both ends of the lid 85 via a gasket 94 made of an insulating material, and is exposed to the outside from the gasket 94.
  • the lid 85 has a pressure release valve 95. As shown in FIG. 2, the pressure release valve 95 is located between the positive electrode terminal 87 and the negative electrode terminal 89. When the internal pressure of the case 82 exceeds the limit value, the pressure release valve 95 is opened to reduce the internal pressure of the case 82.
  • the electrical configuration of the battery 50 will be described with reference to FIG.
  • the battery 50 includes an assembled battery 60, a shutoff device 53, and a management device 100.
  • the assembled battery 60 is composed of a plurality of secondary battery cells 62 connected in series.
  • the secondary battery cell 62 may be a lithium ion secondary battery cell.
  • the secondary battery cell 62 is an example of the "storage cell" of the present invention.
  • the positive electrode of the assembled battery 60 is connected to the external terminal 51 of the positive electrode by the power line 55P.
  • the negative electrode of the assembled battery 60 is connected to the external terminal 52 of the negative electrode by the power line 55N.
  • the battery 50 supplies electric power to the load R connected to the external terminals 51 and 52. When a charger is connected to the external terminals 51 and 52, it can be charged from the charger.
  • the cutoff device 53 is located on the positive electrode of the assembled battery 60 and is provided on the power line 55P of the positive electrode.
  • the cutoff device 53 can be configured by a relay, an FET, or the like.
  • the cutoff device 53 is arranged on the circuit board unit 65 and is housed in the housing body 71.
  • the shutoff device 53 is normally controlled to the CLOSE state (normally close). If there is an abnormality in the battery 50, the battery 50 can be protected by cutting off the current using the cutoff device 53.
  • the management device 100 includes a control unit 111 including a CPU and the like, a storage unit 113, and a communication unit 115.
  • the management device 100 manages the battery 50.
  • the management items of the battery 50 by the management device 100 include management of the charging state such as SOC and management of the usage state of the battery 50.
  • the control of the usage state is whether the battery 50 is used within an appropriate usage range with respect to voltage, voltage, and temperature.
  • the management device 100 manages the life T of the assembled battery 60.
  • the storage unit 113 stores data used for managing the battery 50.
  • the data includes data for determining the life T of the assembled battery 60 and a program for executing an inspection sequence for determining the life T.
  • the program can be stored in a recording medium such as a CD-ROM and transferred.
  • the program can also be delivered using a telecommunication line.
  • the battery 50 can be mounted on a moving body such as an aircraft 10 or a ship and used as a power source for equipment mounted on the aircraft 10 or a ship.
  • Mobile objects may be inspected for the equipment on board on a regular basis. For example, in the case of an aircraft, as shown in FIG. 5, the equipment is inspected by removing it from the aircraft 10 at the maintenance site MT of the airport AP.
  • the maintenance site MT is provided at multiple airport APs, and equipment inspection may be performed at multiple airport APs, not limited to a specific maintenance site MT. Inspection of the equipment includes inspection of the battery 50.
  • the discharge capacity C [Ah] is the amount of electricity discharged by the assembled battery 60 from the full charge to the discharge end voltage.
  • the discharge end voltage is the minimum value of the discharge voltage at which discharge can be safely performed.
  • Each maintenance site MT of each airport AP is equipped with an inspection device 150 having the same structure, and the discharge capacity C [Ah] of the assembled battery 60 can be measured at any maintenance site MT.
  • the discharge capacity C [Ah] decreases as the assembled battery 60 deteriorates, it has a correlation with the life of the assembled battery 60.
  • the discharge capacity C [Ah] is an example of inspection data regarding the life of the assembled battery 60.
  • the inspector 150 includes a pair of connection terminals 151 and 152, a current sensor 160, a charging circuit 170, a discharge circuit 180, and a control device 200.
  • the charging circuit 170 includes a first switch 171 and a charger 173.
  • the first switch 171 and the charger 173 are connected in series.
  • the discharge circuit 180 includes a second switch 181 and a discharge resistance 183.
  • the second switch 181 and the discharge resistor 1833 are connected in series.
  • the charging circuit 170 and the discharging circuit 180 are connected in parallel.
  • One connection point P1 of the charging circuit 170 and the discharging circuit 180 is connected to the positive electrode connection terminal 151 via the power line 155P, and the other connection point P2 is connected to the negative electrode connection terminal 152 via the power line 155N. It is connected to the.
  • the current sensor 160 is located at the power line 155P of the positive electrode and measures the current flowing through the power line 155P.
  • the current sensor 160 is not limited to the power line 155P of the positive electrode, but may be arranged in the power line 155N of the negative electrode.
  • the battery 50 can be connected to the inspection device 150.
  • the charging circuit 170 of the inspection device 150 can be connected to the battery 50 by switching the first switch 171 on and the second switch 181 off (see FIG. 7).
  • the discharge circuit 180 of the inspection device 150 can be connected to the battery 50 by switching the first switch 171 off and the second switch 181 on. reference).
  • the control device 200 is connected to the positive electrode connection terminal 151 via the signal line L1, and the voltage V of the positive electrode connection terminal 151 (the terminal voltage of the positive electrode of the battery 50) is taken in. It is also connected to the current sensor 160 via the signal line L2, and the measured value Ib of the current sensor 160 is taken in.
  • the control device 200 has a communication unit 215 and can communicate with the battery 50. Communication with the battery 50 is not limited to the specific inspection device 150 installed in the specific maintenance site M, but can be performed by the inspection device 150 installed in any maintenance site M.
  • the battery 50 and the inspection device 150 shown in FIG. 6 are connected to each other by a communication line L3 for communication, but the communication between the battery 50 and the inspection device 150 may be wireless communication.
  • the battery 50 removed from the aircraft 10 is connected to the inspection device 150 installed in the maintenance site MT of the airport AP. Specifically, the external terminals 51 and 52 of the battery 50 and the connection terminals 151 and 152 of the inspection device 150 are connected, and further, the communication unit 115 of the battery 50 and the communication unit 215 of the inspection device 150 are connected by the communication line L3. ..
  • the communication line L3 is connected using a detachable connector.
  • the control device 200 of the inspection device 150 can detect that the battery 20 is connected to the inspection device 150 by connecting the communication line L3.
  • the connection of the battery 50 is not limited to the connection of the communication line L3, and can be determined by the terminal voltage V of the connection terminal 151.
  • control device 200 When the control device 200 detects the connection of the battery 50, it executes the discharge capacity inspection sequence shown in FIG. In the state before the inspection sequence is executed, both the first switch 171 and the second switch 181 are controlled to be off.
  • the control device 200 starts the inspection sequence, first, the first switch 171 is switched on and the second switch 181 is switched off, and the charging circuit 170 is connected to the battery 50 (see FIG. 7).
  • control device 200 passes a charging current Ia from the charging circuit 170 to the assembled battery 60 to charge the assembled battery 60 until it is fully charged (S10).
  • the detection of full charge can be determined from the voltage V of the connection terminal 151, the magnitude of the charge current Ia, and the like.
  • control device 200 When the control device 200 detects that the assembled battery 60 is fully charged, the control device 200 switches the first switch 171 off and the second switch 181 on, thereby connecting the discharge circuit 180 to the battery 50 (see FIG. 8).
  • a discharge current Ib flows from the fully charged assembled battery 60 to the discharge circuit 180, and the assembled battery 60 is discharged.
  • the discharge current Ib of the assembled battery 60 is measured by the current sensor 160, and the data is taken into the control device 200.
  • the control device 200 monitors the voltage V of the connection terminal 151 during the discharge of the assembled battery 60, and when the voltage V of the connection terminal 151, that is, the terminal voltage V of the battery 50 drops to a predetermined discharge end voltage, the second switch.
  • the 181 is switched from on to off to stop the discharge. As a result, the assembled battery 60 can be discharged to the discharge end voltage (S20).
  • the control device 200 can measure the discharge capacity C [Ah] of the assembled battery 60 by integrating the discharge current Ib from the start of discharge with full charge to the discharge end voltage.
  • the control device 200 transmits the data together with the measurement date and time and the maintenance site information to the battery 50 via the communication line L3 (S30).
  • the battery 50 When the battery 50 receives the measurement result of the discharge capacity C [Ah] from the inspection device 150, the battery 50 receives the current discharge capacity C [Ah] and the past discharge capacity C [Ah] stored in the storage unit 113 as the inspection history. ], The life of the assembled battery 60 is determined (S40).
  • FIG. 10 is an example of the inspection history of the discharge capacity C stored in the storage unit 113 of the battery 50.
  • the inspection history can be composed of items such as the measurement date and time, the maintenance site, and the measured value of the discharge capacity C.
  • the inspection has been executed twice in the past, and three data of discharge capacities C0 to C2 are stored in the storage unit 113 as the inspection history.
  • C0 is the initial value of the discharge capacity
  • C1 is the discharge capacity measured at the maintenance site M1 at the time of the first inspection
  • C2 is the discharge capacity measured at the maintenance site M2 at the time of the second inspection.
  • the control unit 111 has a discharge capacity C [from the past discharge capacities C0 to C2 stored in the storage unit 113 and the current discharge capacity C3 measured in the current (third) inspection.
  • the life curve LT showing the time transition of [Ah] is obtained.
  • the life curve LT may be a curve or a straight line as long as it approximates the time transition of the discharge capacity C [Ah].
  • the control unit 111 calculates the life T of the assembled battery 60 from the calculated life curve LT.
  • the life T is a period until the discharge capacity C drops from the current value C3 to the threshold value Cx.
  • the threshold value Cx is the usage limit value (minimum value) of the discharge capacity C.
  • control unit 111 determines the length of the obtained life T (S50). The control unit 111 determines that the battery 50 can be used when the life T exists for a predetermined period or longer (S50: YES).
  • the control unit 111 determines that the battery 50 can be used, the current discharge capacity C3 [Ah] measured in the third inspection is stored in the storage unit 113 together with the measurement date and time and the maintenance site (for example, the maintenance site M1). And store it as an inspection history (S60).
  • the control unit 111 then sends a charge command for the battery 50 to the inspection device 150.
  • the inspection device 150 When the inspection device 150 receives a charging command from the battery 50, the first switch 171 is turned on and the second switch 181 is turned off, the charging circuit 170 is connected to the battery 50, and the battery 50 is charged (S70). ..
  • the charged battery 50 After charging the battery 50, by removing it from the inspection device 150, the charged battery 50 can be mounted on the aircraft 10 and used.
  • the next inspection (fourth time) is performed at the maintenance site MT of one of the space APs where the aircraft 10 stays, and the discharge capacity C4 is performed by the inspection device 150 connected to the battery 50. [Ah] is remeasured.
  • the discharge capacities C1 to C3 measured during the first to third inspections are stored in the storage unit 113 of the battery 50 as the inspection history.
  • the battery 50 recalculates the life curve LT showing the time transition of the discharge capacity C [Ah] based on the data of the discharge capacities C0 to C3 stored in the storage unit 113 and the data of the remeasured discharge capacities C4. ,Update. Then, the life T of the assembled battery 60 is calculated from the updated life curve LT.
  • the data of the discharge capacity C measured in the past is cumulatively accumulated in the storage unit 113 of the battery 50 (FIG. 10).
  • the control unit 111 determines that the battery 50 cannot be used when it is less than a predetermined period (S50: No), and notifies the replacement of the battery 50.
  • a command is sent from the battery 50 to the inspection device 150, and a message prompting the replacement of the battery 50 is displayed on the display unit 220 of the inspection device 150.
  • the life T of the assembled battery 60 can be determined even if the frequency of use of the assembled battery 60 and the usage environment (mainly temperature) are not known.
  • the battery 50 is communicated with the inspection device 150, and the battery 50 can acquire the discharge capacity C [Ah] by communication. Therefore, it is not necessary to manually input the data of the inspected discharge capacity C [Ah] to the battery 50, and the burden on the operator can be reduced.
  • a secondary battery cell is shown as an example of the storage cell.
  • the storage cell may be a capacitor or the like.
  • the storage cell is not limited to a plurality of cells, but may be a single cell. A plurality of cells may be connected in series and parallel.
  • the battery 50 is used for an aircraft or a ship. Besides this, it can also be used for vehicles and railways. The usage of the battery 50 is not limited to that of a mobile body. If it is to be inspected regularly to determine its life, it can also be used for stationary purposes such as an uninterruptible power supply or a power storage device for a power generation system.
  • the discharge capacity C [Ah] was measured as the inspection data of the secondary battery cell 62.
  • the inspection data is not limited to the discharge capacity C [Ah].
  • Other data may be used as long as the data has a correlation with the life of the assembled battery 60.
  • it may be an internal resistance.
  • the internal resistance may be obtained from the terminal voltage V and the current Ib of the battery 50.
  • the battery 50 receives the inspection data (discharge capacity) inspected by the inspection device 150 by communication.
  • the method of passing inspection data is not limited to communication.
  • the battery 50 may be provided with a connection port (an example of an input unit) to which an electronic medium such as a USB memory can be connected, and inspection data may be input via the electronic media.
  • the life curve LT showing the time transition of the discharge capacity C is obtained from the data of the current discharge capacity C and the data of the past discharge capacity C stored as the inspection history in the storage unit 113. ..
  • the life of the assembled battery 60 was determined from the obtained life curve LT. If the life of the assembled battery 60 can be determined from the data of the current discharge capacity C and the data of the past discharge capacity C stored in the storage unit 113 as the inspection history, a method different from the life curve LT can be determined. Then, the life of the assembled battery 60 may be determined. For example, the life T may be determined by obtaining the rate of decrease of the discharge capacity C with respect to time and predicting the time transition of the discharge capacity C.

Abstract

A power storage device 50 comprises: a power storage cell 62; an input unit 115 to which inspection data relating to a life of the power storage cell 62 measured by using an inspection instrument 150 is inputted; a memory unit 113 that memorizes the inputted inspection data as inspection history; and a control unit 111. The control unit 111 determines, when the inspection data of the power storage cell is inputted to the input unit 115, the life of the power storage cell 62 on the basis of the currently inputted inspection data and past inspection data memorized as the inspection history in the memory unit 113.

Description

蓄電装置、寿命判断方法Power storage device, life judgment method
　本発明は、蓄電セルの寿命を判断する技術に関する。 The present invention relates to a technique for determining the life of a storage cell.
　特許文献１には、２次電池の充放電寿命判定制御装置に関し、以下の記載がある。電池ユニットの端子電圧を電圧計により検出することにより充放電を検出して、充放電回数検出記憶部に充放電回数を記憶すると共に、充放電回数を警報表示部に表示する。充放電回数比較制御回路では、検出した充放電回数と、予め設定した充放電寿命回数とを比較し、その差がゼロになったら警報表示部により警告を発生させると共に、電池主回路遮断操作回路により電池主回路遮断スイッチを開路させ、電池ユニットの放電路を遮断させる。 Patent Document 1 has the following description regarding the charge / discharge life determination control device for the secondary battery. Charging / discharging is detected by detecting the terminal voltage of the battery unit with a voltmeter, the charging / discharging number is stored in the charge / discharge count detection storage unit, and the charge / discharge count is displayed on the alarm display unit. The charge / discharge count comparison control circuit compares the detected charge / discharge count with the preset charge / discharge life count, and when the difference becomes zero, the alarm display unit issues a warning and the battery main circuit cutoff operation circuit. The battery main circuit cutoff switch is opened to cut off the discharge path of the battery unit.
特開平１１－７９０６３号公報Japanese Unexamined Patent Publication No. 11-79063
　蓄電セルの使用頻度（充放電回数）の情報を使用せずに、蓄電セルの寿命を判断することを課題とする。 The problem is to determine the life of the storage cell without using the information on the frequency of use (charge / discharge frequency) of the storage cell.
　蓄電装置は、蓄電セルと、検査器を用いて計測された前記蓄電セルの寿命に関する検査データが入力される入力部と、入力された検査データを検査履歴として記憶する記憶部と、制御部と、を備え、前記制御部は、前記入力部に前記蓄電セルの検査データの入力があった場合、入力された現在の検査データと、前記記憶部に検査履歴として記憶されている過去の検査データとに基づいて、前記蓄電セルの寿命を判断する。 The power storage device includes a power storage cell, an input unit for inputting inspection data regarding the life of the power storage cell measured using an inspection device, a storage unit for storing the input inspection data as an inspection history, and a control unit. When the input unit receives the input of the inspection data of the storage cell, the control unit includes the input current inspection data and the past inspection data stored as the inspection history in the storage unit. Based on the above, the life of the storage cell is determined.
　上記技術は、蓄電セルの寿命判断方法に適用することが出来る。 The above technology can be applied to the method of determining the life of the storage cell.
　本構成では、蓄電セルの使用頻度が分からなくても、蓄電セルの寿命を判断することが出来る。 In this configuration, the life of the storage cell can be determined without knowing the frequency of use of the storage cell.
バッテリの分解斜視図An exploded perspective view of the battery 二次電池セルの平面図Plan view of secondary battery cell 二次電池セルの断面図Cross section of secondary battery cell バッテリの回路図Battery schematic 航空機と空港を示す図Diagram showing aircraft and airport バッテリ及び検査器の回路図Circuit diagram of battery and inspection device バッテリ及び検査器の回路図Circuit diagram of battery and inspection device バッテリ及び検査器の回路図Circuit diagram of battery and inspection device 放電容量の検査シーケンスDischarge capacity inspection sequence 放電容量Ｃの検査履歴を示す図The figure which shows the inspection history of the discharge capacity C 二次電池セルの寿命曲線を示す図The figure which shows the life curve of a secondary battery cell
　蓄電装置の概要を説明する。
　蓄電装置は、蓄電セルと、検査器を用いて計測された前記蓄電セルの寿命に関する検査データが入力される入力部と、入力された検査データを検査履歴として記憶する記憶部と、制御部と、を備え、前記制御部は、前記入力部に前記蓄電セルの検査データの入力があった場合、入力された現在の検査データと、前記記憶部に検査履歴として記憶されている過去の検査データとに基づいて、前記蓄電セルの寿命を判断する。 The outline of the power storage device will be described.
The power storage device includes a power storage cell, an input unit for inputting inspection data regarding the life of the power storage cell measured using an inspection device, a storage unit for storing the input inspection data as an inspection history, and a control unit. When the input unit receives the input of the inspection data of the storage cell, the control unit includes the input current inspection data and the past inspection data stored as the inspection history in the storage unit. Based on the above, the life of the storage cell is determined.
　この構成では、現在の検査データと、記憶部に検査履歴として記憶された過去の検査データとに基づいて、蓄電セルの寿命を判断する。蓄積された検査データから蓄電セルの寿命を判断するため、検査間の蓄電セルの使用状況や使用頻度が分からなくても、蓄電セルの寿命を判断することが出来る。検査データを検査器に蓄積する場合、その検査器で行った検査結果しか、寿命判断に反映させることが出来ないので、寿命の判断精度に課題がある。特に検査のサイクルが長い場合や、検査に使用される検査器が複数ある場合、顕著である。この構成では、検査を行った検査器を問わず、検査データを記憶部に蓄積して寿命判断に反映させることが出来る。そのため、検査データを検査器に蓄積する場合に比べて、多くの検査データを蓄積することが可能となることから、蓄電装置の寿命を高精度に判断できる。 In this configuration, the life of the storage cell is determined based on the current inspection data and the past inspection data stored as the inspection history in the storage unit. Since the life of the storage cell is determined from the accumulated inspection data, the life of the storage cell can be determined even if the usage status and frequency of use of the storage cell during the inspection are not known. When the inspection data is stored in the inspection device, only the inspection result performed by the inspection device can be reflected in the life judgment, so that there is a problem in the life judgment accuracy. This is especially noticeable when the inspection cycle is long or when there are multiple inspection instruments used for inspection. In this configuration, regardless of the inspection device that has been inspected, the inspection data can be accumulated in the storage unit and reflected in the life determination. Therefore, it is possible to store a large amount of inspection data as compared with the case where the inspection data is stored in the inspection device, so that the life of the power storage device can be determined with high accuracy.
　前記記憶部は、複数の整備場で計測された複数の検査データを、検査履歴として記憶し、前記制御部は、前記入力部に入力された現在の検査データと、前記記憶部に検査履歴として記憶されている複数の整備場で計測された複数の検査データと、に基づいて、前記蓄電セルの寿命を判断してもよい。 The storage unit stores a plurality of inspection data measured at a plurality of maintenance sites as an inspection history, and the control unit stores the current inspection data input to the input unit and the inspection history in the storage unit. The life of the power storage cell may be determined based on a plurality of inspection data measured at a plurality of stored maintenance sites.
　この構成では、複数の整備場で計測された複数の検査データを検査履歴として残すため、同一の整備場からしか検査データを集めない場合に比べて、多くの検査データを得ることが可能となる。そのため、蓄電セルの寿命の判断精度が高まる。特に、移動体に搭載された蓄電装置の場合、特定の整備場に限らず、複数の整備場で検査が行わる場合がある。従って、検査データが集まり難く、寿命の判断精度が低下する懸念がある。移動体に搭載された蓄電装置に、この構成を適用することで、寿命の判断精度が高まる。 In this configuration, since a plurality of inspection data measured at a plurality of maintenance sites are recorded as an inspection history, it is possible to obtain a large amount of inspection data as compared with the case where the inspection data is collected only from the same maintenance site. .. Therefore, the accuracy of determining the life of the storage cell is improved. In particular, in the case of a power storage device mounted on a mobile body, inspection may be performed not only at a specific maintenance site but also at a plurality of maintenance sites. Therefore, it is difficult to collect inspection data, and there is a concern that the accuracy of life determination may decrease. By applying this configuration to the power storage device mounted on the mobile body, the accuracy of determining the life is improved.
　前記制御部は、現在の検査データと過去の検査データとに基づいて、前記検査データの時間推移を示す寿命曲線を求め、求めた寿命曲線より前記蓄電セルの寿命を判断してもよい。この構成では、寿命曲線により検査データの経時変化を予測して蓄電セルの交換時期を判断することが出来る。 The control unit may obtain a life curve showing the time transition of the inspection data based on the current inspection data and the past inspection data, and determine the life of the storage cell from the obtained life curve. In this configuration, it is possible to predict the change over time of the inspection data from the life curve and determine the replacement time of the storage cell.
　前記制御部は、前記蓄電セルの検査データが入力される毎に、現在の検査データと過去に行った検査データとに基づいて、前記蓄電セルの寿命曲線を更新してもよい。この構成では、蓄電セルの検査回数が増えるほど、データ数が多くなり、寿命曲線の精度が高くなる。そのため、蓄電セルの寿命を高精度に判断することが出来る。 The control unit may update the life curve of the storage cell based on the current inspection data and the inspection data performed in the past each time the inspection data of the storage cell is input. In this configuration, as the number of inspections of the storage cell increases, the number of data increases and the accuracy of the life curve increases. Therefore, the life of the storage cell can be determined with high accuracy.
　前記入力部は、前記検査器と通信可能な通信部であり、前記検査器から通信により前記検査データを受信してもよい。この構成では、作業者が検査データを蓄電装置に入力する必要がなくなるので、作業者の負担を軽減することが出来る。 The input unit is a communication unit capable of communicating with the inspection device, and may receive the inspection data from the inspection device by communication. With this configuration, it is not necessary for the operator to input the inspection data into the power storage device, so that the burden on the operator can be reduced.
　＜実施形態１＞
１．バッテリの説明
　バッテリ５０は、図１に示すように、組電池６０と、回路基板ユニット６５と、収容体７１を備える。 <Embodiment 1>
1. 1. Description of Battery As shown in FIG. 1, the battery 50 includes an assembled battery 60, a circuit board unit 65, and an accommodating body 71.
　収容体７１は、合成樹脂材料からなる本体７３と蓋体７４とを備えている。本体７３は有底筒状である。本体７３は、底面部７５と、４つの側面部７６とを備えている。４つの側面部７６によって上端部分に上方開口部７７が形成されている。 The housing body 71 includes a main body 73 made of a synthetic resin material and a lid body 74. The main body 73 has a bottomed tubular shape. The main body 73 includes a bottom surface portion 75 and four side surface portions 76. An upper opening 77 is formed at the upper end portion by the four side surface portions 76.
　収容体７１は、組電池６０と回路基板ユニット６５を収容する。組電池６０は１２個の二次電池セル６２を有する。１２個の二次電池セル６２は、３並列で４直列に接続されている。 The accommodating body 71 accommodates the assembled battery 60 and the circuit board unit 65. The assembled battery 60 has 12 secondary battery cells 62. The 12 secondary battery cells 62 are connected in 3 parallels and 4 in series.
　回路基板ユニット６５は、組電池６０の上部に配置されている。図４のブロック図では、並列に接続された３つの二次電池セル６２を１つの電池記号で表している。二次電池セル６２は「蓄電セル」の一例である。 The circuit board unit 65 is arranged above the assembled battery 60. In the block diagram of FIG. 4, three secondary battery cells 62 connected in parallel are represented by one battery symbol. The secondary battery cell 62 is an example of a “storage cell”.
　蓋体７４は、本体７３の上方開口部７７を閉鎖する。蓋体７４の周囲には外周壁７８が設けられている。蓋体７４は、平面視略Ｔ字形の突出部７９を有する。蓋体７４の前部のうち、一方の隅部に正極の外部端子５１が固定され、他方の隅部に負極の外部端子５２が固定されている。 The lid 74 closes the upper opening 77 of the main body 73. An outer peripheral wall 78 is provided around the lid 74. The lid body 74 has a protrusion 79 having a substantially T-shape in a plan view. Of the front portion of the lid 74, the external terminal 51 of the positive electrode is fixed to one corner, and the external terminal 52 of the negative electrode is fixed to the other corner.
　バッテリ５０は、正負の外部端子５１、５２に接続された負荷に対して電力を供給する。 The battery 50 supplies electric power to the loads connected to the positive and negative external terminals 51 and 52.
　図２及び図３に示すように、二次電池セル６２は、直方体形状のケース８２内に電極体８３を非水電解質と共に収容したものである。二次電池セル６２は一例としてリチウムイオン二次電池である。ケース８２は、ケース本体８４と、その上方の開口部を閉鎖する蓋８５とを有している。 As shown in FIGS. 2 and 3, the secondary battery cell 62 contains an electrode body 83 together with a non-aqueous electrolyte in a rectangular parallelepiped case 82. The secondary battery cell 62 is, for example, a lithium ion secondary battery. The case 82 has a case body 84 and a lid 85 that closes an opening above the case body 84.
　電極体８３は、詳細については図示しないが、銅箔からなる基材に活物質を塗布した負極要素と、アルミニウム箔からなる基材に活物質を塗布した正極要素との間に、多孔性の樹脂フィルムからなるセパレータを配置したものである。 Although not shown in detail, the electrode body 83 is porous between the negative electrode element in which the active material is applied to the base material made of copper foil and the positive electrode element in which the active material is applied to the base material made of aluminum foil. A separator made of a resin film is arranged.
　これらはいずれも帯状で、セパレータに対して負極要素と正極要素とを幅方向の反対側にそれぞれ位置をずらした状態で、ケース本体８４に収容可能となるように扁平状に巻回されている。 All of these are band-shaped, and are wound flat so that they can be accommodated in the case body 84 with the negative electrode element and the positive electrode element displaced from each other on the opposite sides in the width direction with respect to the separator. ..
　正極要素には正極集電体８６を介して正極端子８７が、負極要素には負極集電体８８を介して負極端子８９がそれぞれ接続されている。正極集電体８６及び負極集電体８８は、平板状の台座部９０と、この台座部９０から延びる脚部９１とからなる。台座部９０には貫通孔が形成されている。脚部９１は正極要素又は負極要素に接続されている。 The positive electrode terminal 87 is connected to the positive electrode element via the positive electrode current collector 86, and the negative electrode terminal 89 is connected to the negative electrode element via the negative electrode current collector 88. The positive electrode current collector 86 and the negative electrode current collector 88 include a flat plate-shaped pedestal portion 90 and leg portions 91 extending from the pedestal portion 90. A through hole is formed in the pedestal portion 90. The leg 91 is connected to a positive electrode element or a negative electrode element.
　正極端子８７及び負極端子８９は、端子本体部９２と、その下面中心部分から下方に突出する軸部９３とからなる。そのうち、正極端子８７の端子本体部９２と軸部９３とは、アルミニウム（単一材料）によって一体成形されている。負極端子８９においては、端子本体部９２がアルミニウム製で、軸部９３が銅製であり、これらを組み付けたものである。 The positive electrode terminal 87 and the negative electrode terminal 89 include a terminal main body portion 92 and a shaft portion 93 protruding downward from the center portion of the lower surface thereof. Among them, the terminal body portion 92 and the shaft portion 93 of the positive electrode terminal 87 are integrally molded of aluminum (single material). In the negative electrode terminal 89, the terminal body portion 92 is made of aluminum and the shaft portion 93 is made of copper, and these are assembled.
　正極端子８７及び負極端子８９の端子本体部９２は、蓋８５の両端部に絶縁材料からなるガスケット９４を介して配置され、このガスケット９４から外方へ露出されている。 The terminal body 92 of the positive electrode terminal 87 and the negative electrode terminal 89 is arranged at both ends of the lid 85 via a gasket 94 made of an insulating material, and is exposed to the outside from the gasket 94.
　蓋８５は、圧力開放弁９５を有している。圧力開放弁９５は、図２に示すように、正極端子８７と負極端子８９の間に位置している。圧力開放弁９５は、ケース８２の内圧が制限値を超えた時に、開放して、ケース８２の内圧を下げる。 The lid 85 has a pressure release valve 95. As shown in FIG. 2, the pressure release valve 95 is located between the positive electrode terminal 87 and the negative electrode terminal 89. When the internal pressure of the case 82 exceeds the limit value, the pressure release valve 95 is opened to reduce the internal pressure of the case 82.
　図４を参照して、バッテリ５０の電気的構成を説明する。バッテリ５０は、組電池６０と、遮断装置５３と、管理装置１００とを含む。 The electrical configuration of the battery 50 will be described with reference to FIG. The battery 50 includes an assembled battery 60, a shutoff device 53, and a management device 100.
　組電池６０は、直列接続された複数の二次電池セル６２から構成されている。二次電池セル６２は、リチウムイオン二次電池セルでもよい。二次電池セル６２は、本発明の「蓄電セル」の一例である。 The assembled battery 60 is composed of a plurality of secondary battery cells 62 connected in series. The secondary battery cell 62 may be a lithium ion secondary battery cell. The secondary battery cell 62 is an example of the "storage cell" of the present invention.
　組電池６０の正極は、パワーライン５５Ｐにより、正極の外部端子５１と接続されている。組電池６０の負極は、パワーライン５５Ｎにより、負極の外部端子５２に接続されている。バッテリ５０は、外部端子５１、５２に接続された負荷Ｒに対して電力を供給する。外部端子５１、５２に充電器が接続された場合、充電器より充電することも出来る。 The positive electrode of the assembled battery 60 is connected to the external terminal 51 of the positive electrode by the power line 55P. The negative electrode of the assembled battery 60 is connected to the external terminal 52 of the negative electrode by the power line 55N. The battery 50 supplies electric power to the load R connected to the external terminals 51 and 52. When a charger is connected to the external terminals 51 and 52, it can be charged from the charger.
　遮断装置５３は、組電池６０の正極に位置し、正極のパワーライン５５Ｐに設けられている。遮断装置５３は、リレーやＦＥＴなどにより構成することが出来る。 The cutoff device 53 is located on the positive electrode of the assembled battery 60 and is provided on the power line 55P of the positive electrode. The cutoff device 53 can be configured by a relay, an FET, or the like.
　遮断装置５３は、回路基板ユニット６５上に配置されており、収容体７１内に収容されている。 The cutoff device 53 is arranged on the circuit board unit 65 and is housed in the housing body 71.
　遮断装置５３は、正常時、ＣＬＯＳＥ状態（normally close）に制御される。バッテリ５０に異常があった場合、遮断装置５３を用いて電流を遮断することで、バッテリ５０を保護することが出来る。 The shutoff device 53 is normally controlled to the CLOSE state (normally close). If there is an abnormality in the battery 50, the battery 50 can be protected by cutting off the current using the cutoff device 53.
　管理装置１００は、ＣＰＵ等からなる制御部１１１と、記憶部１１３と通信部１１５とを含む。管理装置１００はバッテリ５０を管理する。 The management device 100 includes a control unit 111 including a CPU and the like, a storage unit 113, and a communication unit 115. The management device 100 manages the battery 50.
　管理装置１００によるバッテリ５０の管理項目には、ＳＯＣなど充電状態に関する管理や、バッテリ５０の使用状態の管理が含まれる。使用状態の管理は、電圧、電圧、温度に関し、適正な使用範囲内で、バッテリ５０が使用されているかである。 The management items of the battery 50 by the management device 100 include management of the charging state such as SOC and management of the usage state of the battery 50. The control of the usage state is whether the battery 50 is used within an appropriate usage range with respect to voltage, voltage, and temperature.
　管理装置１００は、組電池６０の寿命Ｔを管理する。記憶部１１３には、バッテリ５０の管理に使用となるデータが記憶されている。 The management device 100 manages the life T of the assembled battery 60. The storage unit 113 stores data used for managing the battery 50.
　データには、組電池６０の寿命Ｔを判断するためのデータや、寿命Ｔを判断する検査シーケンスを実行するためのプログラムを含む。プログラムはＣＤ－ＲＯＭ等の記録媒体に記憶して譲渡等することが出来る。プログラムは電気通信回線を用いて配信することも出来る。 The data includes data for determining the life T of the assembled battery 60 and a program for executing an inspection sequence for determining the life T. The program can be stored in a recording medium such as a CD-ROM and transferred. The program can also be delivered using a telecommunication line.
　バッテリ５０は、航空機１０や船舶などの移動体に搭載して、航空機１０や船舶に搭載された機器の電源として、使用することが出来る。 The battery 50 can be mounted on a moving body such as an aircraft 10 or a ship and used as a power source for equipment mounted on the aircraft 10 or a ship.
　移動体は、搭載されている機器の検査を定期的に行う場合がある。例えば、航空機用の場合、図５に示すように、空港ＡＰの整備場ＭＴにて、航空機１０から取り外して、機器の検査が行われる。 Mobile objects may be inspected for the equipment on board on a regular basis. For example, in the case of an aircraft, as shown in FIG. 5, the equipment is inspected by removing it from the aircraft 10 at the maintenance site MT of the airport AP.
　整備場ＭＴは、複数の空港ＡＰに設けられており、機器の検査は、特定の整備場ＭＴに限らず、複数の空港ＡＰにて行われる場合がある。機器の検査には、バッテリ５０の検査が含まれている。 The maintenance site MT is provided at multiple airport APs, and equipment inspection may be performed at multiple airport APs, not limited to a specific maintenance site MT. Inspection of the equipment includes inspection of the battery 50.
　バッテリ５０の検査項目の一つに、組電池６０の放電容量Ｃ［Ａｈ］がある。放電容量Ｃ［Ａｈ］は、満充電から放電終止電圧に至るまでに、組電池６０が放電する電気量である。放電終止電圧は、安全に放電を行える放電電圧の最低値である。 One of the inspection items of the battery 50 is the discharge capacity C [Ah] of the assembled battery 60. The discharge capacity C [Ah] is the amount of electricity discharged by the assembled battery 60 from the full charge to the discharge end voltage. The discharge end voltage is the minimum value of the discharge voltage at which discharge can be safely performed.
　各空港ＡＰの各整備場ＭＴには、同一構造の検査器１５０が設けられており、どの整備場ＭＴでも、組電池６０の放電容量Ｃ［Ａｈ］を計測することができる。 Each maintenance site MT of each airport AP is equipped with an inspection device 150 having the same structure, and the discharge capacity C [Ah] of the assembled battery 60 can be measured at any maintenance site MT.
　放電容量Ｃ［Ａｈ］は、組電池６０の劣化に伴い低下することから、組電池６０の寿命と相関性がある。放電容量Ｃ［Ａｈ］は、組電池６０の寿命に関する検査データの一例である。 Since the discharge capacity C [Ah] decreases as the assembled battery 60 deteriorates, it has a correlation with the life of the assembled battery 60. The discharge capacity C [Ah] is an example of inspection data regarding the life of the assembled battery 60.
　２．検査器１５０の説明
　検査器１５０は、図６に示すように、一対の接続端子１５１、１５２と、電流センサ１６０と、充電回路１７０と、放電回路１８０と、制御装置２００を備える。 2. 2. Description of the Inspector 150 As shown in FIG. 6, the inspector 150 includes a pair of connection terminals 151 and 152, a current sensor 160, a charging circuit 170, a discharge circuit 180, and a control device 200.
　充電回路１７０は、第１スイッチ１７１と充電器１７３を備える。第１スイッチ１７１と充電器１７３は直列に接続されている。 The charging circuit 170 includes a first switch 171 and a charger 173. The first switch 171 and the charger 173 are connected in series.
　放電回路１８０は、第２スイッチ１８１と放電抵抗１８３を備える。第２スイッチ１８１と放電抵抗１８３３は直列に接続されている。 The discharge circuit 180 includes a second switch 181 and a discharge resistance 183. The second switch 181 and the discharge resistor 1833 are connected in series.
　充電回路１７０と放電回路１８０は、並列に接続されている。充電回路１７０及び放電回路１８０の一方の接続点Ｐ１は、パワーライン１５５Ｐを介して、正極の接続端子１５１に接続され、他方の接続点Ｐ２は、パワーライン１５５Ｎを介して、負極の接続端子１５２に接続されている。 The charging circuit 170 and the discharging circuit 180 are connected in parallel. One connection point P1 of the charging circuit 170 and the discharging circuit 180 is connected to the positive electrode connection terminal 151 via the power line 155P, and the other connection point P2 is connected to the negative electrode connection terminal 152 via the power line 155N. It is connected to the.
　電流センサ１６０は、正極のパワーライン１５５Ｐに位置しており、パワーライン１５５Ｐに流れる電流を計測する。電流センサ１６０は、正極のパワーライン１５５Ｐに限らず、負極のパワーライン１５５Ｎに配置することも出来る。 The current sensor 160 is located at the power line 155P of the positive electrode and measures the current flowing through the power line 155P. The current sensor 160 is not limited to the power line 155P of the positive electrode, but may be arranged in the power line 155N of the negative electrode.
　バッテリ５０の外部端子５１、５２を、検査器１５０の接続端子１５１、１５２にそれぞれ接続することで、バッテリ５０を検査器１５０に対して接続することが出来る。 By connecting the external terminals 51 and 52 of the battery 50 to the connection terminals 151 and 152 of the inspection device 150, respectively, the battery 50 can be connected to the inspection device 150.
　検査器１５０の２つのスイッチのうち、第１スイッチ１７１をオン、第２スイッチ１８１をオフに切り換えることで、検査器１５０の充電回路１７０をバッテリ５０に接続することが出来る（図７参照）。 Of the two switches of the inspection device 150, the charging circuit 170 of the inspection device 150 can be connected to the battery 50 by switching the first switch 171 on and the second switch 181 off (see FIG. 7).
　検査器１５０の２つのスイッチ１７１、１８１のうち、第１スイッチ１７１をオフ、第２スイッチ１８１をオンに切り換えることで、検査器１５０の放電回路１８０をバッテリ５０に接続することが出来る（図８参照）。 Of the two switches 171 and 181 of the inspection device 150, the discharge circuit 180 of the inspection device 150 can be connected to the battery 50 by switching the first switch 171 off and the second switch 181 on. reference).
　制御装置２００は、正極の接続端子１５１と信号線Ｌ１を介して接続されており、正極の接続端子１５１の電圧Ｖ（バッテリ５０の正極の端子電圧）が取り込まれるようになっている。電流センサ１６０とも信号線Ｌ２を介して接続されており、電流センサ１６０の計測値Ｉｂが取り込まれるようになっている。 The control device 200 is connected to the positive electrode connection terminal 151 via the signal line L1, and the voltage V of the positive electrode connection terminal 151 (the terminal voltage of the positive electrode of the battery 50) is taken in. It is also connected to the current sensor 160 via the signal line L2, and the measured value Ib of the current sensor 160 is taken in.
　制御装置２００は通信部２１５を有しており、バッテリ５０と通信することが出来る。バッテリ５０との通信は、特定の整備場Ｍに設置された特定の検査器１５０に限らず、どの整備場Ｍに設置された検査器１５０でも行うことが出来る。図６に示すバッテリ５０と検査器１５０は、両間を通信線Ｌ３で接続して通信を行うが、バッテリ５０と検査器１５０の通信は、無線通信でもよい。 The control device 200 has a communication unit 215 and can communicate with the battery 50. Communication with the battery 50 is not limited to the specific inspection device 150 installed in the specific maintenance site M, but can be performed by the inspection device 150 installed in any maintenance site M. The battery 50 and the inspection device 150 shown in FIG. 6 are connected to each other by a communication line L3 for communication, but the communication between the battery 50 and the inspection device 150 may be wireless communication.
　３．バッテリの検査と寿命診断
　検査を行う場合、航空機１０から取り外されたバッテリ５０を、空港ＡＰの整備場ＭＴに装備された検査器１５０に接続する。具体的には、バッテリ５０の外部端子５１、５２と検査器１５０の接続端子１５１、１５２を接続し、更に、バッテリ５０の通信部１１５と検査器１５０の通信部２１５を通信線Ｌ３で接続する。通信線Ｌ３の接続は、着脱可能なコネクタを用いて行う。 3. 3. Battery inspection and life diagnosis When performing inspection, the battery 50 removed from the aircraft 10 is connected to the inspection device 150 installed in the maintenance site MT of the airport AP. Specifically, the external terminals 51 and 52 of the battery 50 and the connection terminals 151 and 152 of the inspection device 150 are connected, and further, the communication unit 115 of the battery 50 and the communication unit 215 of the inspection device 150 are connected by the communication line L3. .. The communication line L3 is connected using a detachable connector.
　検査器１５０の制御装置２００は、通信線Ｌ３の接続により、検査器１５０にバッテリ２０が接続されたことを検出することが出来る。バッテリ５０の接続は、通信線Ｌ３の接続に限らず、接続端子１５１の端子電圧Ｖで判断することも出来る。 The control device 200 of the inspection device 150 can detect that the battery 20 is connected to the inspection device 150 by connecting the communication line L3. The connection of the battery 50 is not limited to the connection of the communication line L3, and can be determined by the terminal voltage V of the connection terminal 151.
　制御装置２００はバッテリ５０の接続を検出した場合、図９に示す放電容量の検査シーケンスを実行する。検査シーケンス実行前の状態において、第１スイッチ１７１と第２スイッチ１８１はいずれもオフに制御されている。 When the control device 200 detects the connection of the battery 50, it executes the discharge capacity inspection sequence shown in FIG. In the state before the inspection sequence is executed, both the first switch 171 and the second switch 181 are controlled to be off.
　制御装置２００は、検査シーケンスを開始すると、まず、第１スイッチ１７１をオン、第２スイッチ１８１をオフに切り換え、充電回路１７０をバッテリ５０に接続する（図７参照）。 When the control device 200 starts the inspection sequence, first, the first switch 171 is switched on and the second switch 181 is switched off, and the charging circuit 170 is connected to the battery 50 (see FIG. 7).
　その後、制御装置２００は、充電回路１７０から組電池６０に充電電流Ｉａを流して、組電池６０を満充電まで充電する（Ｓ１０）。満充電の検出は、接続端子１５１の電圧Ｖや充電電流Ｉａの大きさ等から判断することが出来る。 After that, the control device 200 passes a charging current Ia from the charging circuit 170 to the assembled battery 60 to charge the assembled battery 60 until it is fully charged (S10). The detection of full charge can be determined from the voltage V of the connection terminal 151, the magnitude of the charge current Ia, and the like.
　制御装置２００は、組電池６０の満充電を検出すると、第１スイッチ１７１をオフ、第２スイッチ１８１をオンに切り換えることで、バッテリ５０に放電回路１８０を接続する（図８参照）。 When the control device 200 detects that the assembled battery 60 is fully charged, the control device 200 switches the first switch 171 off and the second switch 181 on, thereby connecting the discharge circuit 180 to the battery 50 (see FIG. 8).
　放電回路１８０の接続により、満充電に充電された組電池６０から放電回路１８０に放電電流Ｉｂが流れ、組電池６０は放電する。組電池６０の放電電流Ｉｂは電流センサ１６０により計測され、そのデータは制御装置２００に取り込まれる。 By connecting the discharge circuit 180, a discharge current Ib flows from the fully charged assembled battery 60 to the discharge circuit 180, and the assembled battery 60 is discharged. The discharge current Ib of the assembled battery 60 is measured by the current sensor 160, and the data is taken into the control device 200.
　制御装置２００は、組電池６０の放電中、接続端子１５１の電圧Ｖをモニタし、接続端子１５１の電圧Ｖ、つまりバッテリ５０の端子電圧Ｖが、所定の放電終止電圧まで下がると、第２スイッチ１８１をオンからオフに切り換えて放電を停止する。これにより、組電池６０を放電終止電圧まで放電することが出来る（Ｓ２０）。 The control device 200 monitors the voltage V of the connection terminal 151 during the discharge of the assembled battery 60, and when the voltage V of the connection terminal 151, that is, the terminal voltage V of the battery 50 drops to a predetermined discharge end voltage, the second switch. The 181 is switched from on to off to stop the discharge. As a result, the assembled battery 60 can be discharged to the discharge end voltage (S20).
　制御装置２００は、満充電で放電を開始してから放電終止電圧に至るまでの放電電流Ｉｂを積算することにより、組電池６０の放電容量Ｃ［Ａｈ］を計測することが出来る。 The control device 200 can measure the discharge capacity C [Ah] of the assembled battery 60 by integrating the discharge current Ib from the start of discharge with full charge to the discharge end voltage.
　制御装置２００は、組電池６０の放電容量Ｃ［Ａｈ］の計測が完了すると、そのデータを、計測日時、整備場の情報と共に、通信線Ｌ３を介してバッテリ５０に送信する（Ｓ３０）。 When the measurement of the discharge capacity C [Ah] of the assembled battery 60 is completed, the control device 200 transmits the data together with the measurement date and time and the maintenance site information to the battery 50 via the communication line L3 (S30).
　バッテリ５０は、検査器１５０から放電容量Ｃ［Ａｈ］の計測結果を受信すると、受信した現在の放電容量Ｃ［Ａｈ］と、記憶部１１３に検査履歴として記憶された過去の放電容量Ｃ［Ａｈ］に基づいて、組電池６０の寿命を判断する（Ｓ４０）。 When the battery 50 receives the measurement result of the discharge capacity C [Ah] from the inspection device 150, the battery 50 receives the current discharge capacity C [Ah] and the past discharge capacity C [Ah] stored in the storage unit 113 as the inspection history. ], The life of the assembled battery 60 is determined (S40).
　図１０は、バッテリ５０の記憶部１１３に記憶されている放電容量Ｃの検査履歴の一例である。検査履歴は、計測日時、整備場、放電容量Ｃの計測値の項目などから構成することが出来る。 FIG. 10 is an example of the inspection history of the discharge capacity C stored in the storage unit 113 of the battery 50. The inspection history can be composed of items such as the measurement date and time, the maintenance site, and the measured value of the discharge capacity C.
　３回目の検査の場合、過去に検査を２回実行しており、記憶部１１３に対して、検査履歴として、放電容量Ｃ０～Ｃ２の３つのデータが記憶されている。 In the case of the third inspection, the inspection has been executed twice in the past, and three data of discharge capacities C0 to C2 are stored in the storage unit 113 as the inspection history.
　「Ｃ０」は放電容量の初期値、「Ｃ１」は１回目の検査時に整備場Ｍ１にて計測した放電容量である。「Ｃ２」は２回目の検査時に整備場Ｍ２にて計測した放電容量である。 "C0" is the initial value of the discharge capacity, and "C1" is the discharge capacity measured at the maintenance site M1 at the time of the first inspection. "C2" is the discharge capacity measured at the maintenance site M2 at the time of the second inspection.
　制御部１１１は、記憶部１１３に記憶されている過去の放電容量Ｃ０～Ｃ２と、今回（３回目）の検査で計測した現在の放電容量Ｃ３から、図１１に示すように、放電容量Ｃ［Ａｈ］の時間推移を示す寿命曲線ＬＴを求める。 As shown in FIG. 11, the control unit 111 has a discharge capacity C [from the past discharge capacities C0 to C2 stored in the storage unit 113 and the current discharge capacity C3 measured in the current (third) inspection. The life curve LT showing the time transition of [Ah] is obtained.
　寿命曲線ＬＴは、放電容量Ｃ［Ａｈ］の時間推移を近似するものであれば、曲線でもいいし、直線でもよい。 The life curve LT may be a curve or a straight line as long as it approximates the time transition of the discharge capacity C [Ah].
　制御部１１１は、寿命曲線ＬＴを算出すると、算出した寿命曲線ＬＴから組電池６０の寿命Ｔを算出する。寿命Ｔは、放電容量Ｃが現在値Ｃ３から閾値Ｃｘまで低下するまでの期間である。閾値Ｃｘは、放電容量Ｃの使用限界値（最低値）である。 When the control unit 111 calculates the life curve LT, the control unit 111 calculates the life T of the assembled battery 60 from the calculated life curve LT. The life T is a period until the discharge capacity C drops from the current value C3 to the threshold value Cx. The threshold value Cx is the usage limit value (minimum value) of the discharge capacity C.
　制御部１１１は、組電池６０の寿命Ｔを求めると、求めた寿命Ｔの長さを判断する（Ｓ５０）。制御部１１１は、寿命Ｔが所定期間以上存在する場合、バッテリ５０は使用可能と判断する（Ｓ５０：ＹＥＳ）。 When the control unit 111 obtains the life T of the assembled battery 60, the control unit 111 determines the length of the obtained life T (S50). The control unit 111 determines that the battery 50 can be used when the life T exists for a predetermined period or longer (S50: YES).
　制御部１１１は、バッテリ５０は使用可能と判断した場合、３回目の検査で計測した現在の放電容量Ｃ３［Ａｈ］を、計測日時及び整備場（例えば整備場Ｍ１）と共に、記憶部１１３に対して検査履歴として記憶する（Ｓ６０）。 When the control unit 111 determines that the battery 50 can be used, the current discharge capacity C3 [Ah] measured in the third inspection is stored in the storage unit 113 together with the measurement date and time and the maintenance site (for example, the maintenance site M1). And store it as an inspection history (S60).
　制御部１１１は、その後、検査器１５０に対してバッテリ５０の充電指令を送る。 The control unit 111 then sends a charge command for the battery 50 to the inspection device 150.
　検査器１５０は、バッテリ５０から充電指令を受けると、その後、第１スイッチ１７１をオン、第２スイッチ１８１をオフに切り換え、充電回路１７０をバッテリ５０に接続し、バッテリ５０を充電する（Ｓ７０）。 When the inspection device 150 receives a charging command from the battery 50, the first switch 171 is turned on and the second switch 181 is turned off, the charging circuit 170 is connected to the battery 50, and the battery 50 is charged (S70). ..
　バッテリ５０の充電後、検査器１５０から取り外すことで、充電済みのバッテリ５０を、航空機１０に搭載して使用することが出来る。 After charging the battery 50, by removing it from the inspection device 150, the charged battery 50 can be mounted on the aircraft 10 and used.
　その後、所定期間が経過すると、航空機１０の滞在するいずれかの空間ＡＰの整備場ＭＴにて、次の検査（４回目）が行われ、バッテリ５０に接続された検査器１５０により、放電容量Ｃ４［Ａｈ］が再計測される。 After that, when the predetermined period elapses, the next inspection (fourth time) is performed at the maintenance site MT of one of the space APs where the aircraft 10 stays, and the discharge capacity C4 is performed by the inspection device 150 connected to the battery 50. [Ah] is remeasured.
　この時点では、バッテリ５０の記憶部１１３に対して、初回の放電容量Ｃ０に加えて、第１回目～第３回目までの検査時に計測した放電容量Ｃ１～Ｃ３が検査履歴として記憶されている。 At this point, in addition to the initial discharge capacity C0, the discharge capacities C1 to C3 measured during the first to third inspections are stored in the storage unit 113 of the battery 50 as the inspection history.
　バッテリ５０は、記憶部１１３に記憶された放電容量Ｃ０～Ｃ３のデータと、再計測した放電容量Ｃ４のデータに基づいて、放電容量Ｃ［Ａｈ］の時間推移を示す寿命曲線ＬＴを改めて算出し、更新する。そして、更新した寿命曲線ＬＴから組電池６０の寿命Ｔを算出する。 The battery 50 recalculates the life curve LT showing the time transition of the discharge capacity C [Ah] based on the data of the discharge capacities C0 to C3 stored in the storage unit 113 and the data of the remeasured discharge capacities C4. ,Update. Then, the life T of the assembled battery 60 is calculated from the updated life curve LT.
　このように、バッテリ５０の記憶部１１３には、過去に計測した放電容量Ｃのデータが累積的に蓄積される（図１０）。 In this way, the data of the discharge capacity C measured in the past is cumulatively accumulated in the storage unit 113 of the battery 50 (FIG. 10).
　そのため、使用期間が長くなるほど、つまり寿命Ｔが短くなるほど、寿命曲線ＬＴの算出に使用されるデータ数が増えるので、組電池６０の寿命Ｔの判定精度が高くなる。 Therefore, as the usage period becomes longer, that is, as the life T becomes shorter, the number of data used for calculating the life curve LT increases, so that the determination accuracy of the life T of the assembled battery 60 becomes higher.
　そして、制御部１１１は、組電池６０の寿命Ｔを判定した結果、所定期間未満である場合（Ｓ５０：Ｎｏ）、バッテリ５０は使用不可と判断し、バッテリ５０の交換を報知する。 Then, as a result of determining the life T of the assembled battery 60, the control unit 111 determines that the battery 50 cannot be used when it is less than a predetermined period (S50: No), and notifies the replacement of the battery 50.
　例えば、バッテリ５０から検査器１５０に指令を送り、検査器１５０の表示部２２０にバッテリ５０の交換を促すメッセージを表示する。 For example, a command is sent from the battery 50 to the inspection device 150, and a message prompting the replacement of the battery 50 is displayed on the display unit 220 of the inspection device 150.
３．効果説明
　本構成では、組電池６０の使用頻度や使用環境（主として温度）が分からなくても、組電池６０の寿命Ｔを判断することが出来る。 3. 3. Explanation of effect In this configuration, the life T of the assembled battery 60 can be determined even if the frequency of use of the assembled battery 60 and the usage environment (mainly temperature) are not known.
　本構成では、複数の整備場Ｍ１、Ｍ２で計測された複数の放電容量Ｃ［Ａｈ］を検査履歴としてバッテリ５０に残し、過去の検査データ（放電容量）をバッテリ５０で一元管理する。そのため、多くの検査データを得ることが可能となり、検査データを検査器１５０に蓄積する場合に比べて、組電池６０の寿命Ｔの判断精度が高まる。特に、検査サイクルが長い場合、検査データが集まり難く、判断精度が低下する傾向にあることから、好適である。 In this configuration, a plurality of discharge capacities C [Ah] measured at a plurality of maintenance sites M1 and M2 are left in the battery 50 as an inspection history, and past inspection data (discharge capacities) are centrally managed by the battery 50. Therefore, a large amount of inspection data can be obtained, and the accuracy of determining the life T of the assembled battery 60 is improved as compared with the case where the inspection data is stored in the inspection device 150. In particular, when the inspection cycle is long, it is difficult to collect inspection data and the judgment accuracy tends to decrease, which is preferable.
　本構成では、バッテリ５０は検査器１５０と通信接続されており、バッテリ５０は放電容量Ｃ［Ａｈ］を通信で取得できる。そのため、検査した放電容量Ｃ［Ａｈ］のデータをバッテリ５０に対して手動で入力する必要がなく、作業者の負担を軽減することが出来る。 In this configuration, the battery 50 is communicated with the inspection device 150, and the battery 50 can acquire the discharge capacity C [Ah] by communication. Therefore, it is not necessary to manually input the data of the inspected discharge capacity C [Ah] to the battery 50, and the burden on the operator can be reduced.
　＜他の実施形態＞
　本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。 <Other embodiments>
The present invention is not limited to the embodiments described above and the drawings, and for example, the following embodiments are also included in the technical scope of the present invention.
　（１）実施形態では、蓄電セルの一例として、二次電池セルを示した。蓄電セルは、キャパシタなどでもよい。蓄電セルは、複数セルに限らず、単セルでもよい。複数セルが直並列に接続されていてもよい。 (1) In the embodiment, a secondary battery cell is shown as an example of the storage cell. The storage cell may be a capacitor or the like. The storage cell is not limited to a plurality of cells, but may be a single cell. A plurality of cells may be connected in series and parallel.
　（２）実施形態では、バッテリ５０を航空機や船舶に使用する場合を例示した。これ以外にも、車両用や鉄道用に使用することも出来る。バッテリ５０の使用用途は、移動体用に限定されない。定期的に検査を行って寿命を判断する場合であれば、無停電電源装置や発電システムの蓄電装置など、定置用として使用することも出来る。 (2) In the embodiment, a case where the battery 50 is used for an aircraft or a ship is illustrated. Besides this, it can also be used for vehicles and railways. The usage of the battery 50 is not limited to that of a mobile body. If it is to be inspected regularly to determine its life, it can also be used for stationary purposes such as an uninterruptible power supply or a power storage device for a power generation system.
　（３）実施形態では、二次電池セル６２の検査データとして、放電容量Ｃ［Ａｈ］を計測した。検査データは、放電容量Ｃ［Ａｈ］に限らない。組電池６０の寿命と相関性を有するデータであれば、他のデータでもよい。例えば、内部抵抗でもよい。内部抵抗はバッテリ５０の端子電圧Ｖと電流Ｉｂから求めてもよい。 (3) In the embodiment, the discharge capacity C [Ah] was measured as the inspection data of the secondary battery cell 62. The inspection data is not limited to the discharge capacity C [Ah]. Other data may be used as long as the data has a correlation with the life of the assembled battery 60. For example, it may be an internal resistance. The internal resistance may be obtained from the terminal voltage V and the current Ib of the battery 50.
　（４）実施形態では、バッテリ５０は、検査器１５０で検査した検査データ（放電容量）を通信により受信した。検査データの受け渡し方法は、通信に限らない。バッテリ５０に、ＵＳＢメモリなど電子メディアを接続可能な接続ポート（入力部の一例）などを設けて、電子メディアを介して検査データを入力するようにしてもよい。 (4) In the embodiment, the battery 50 receives the inspection data (discharge capacity) inspected by the inspection device 150 by communication. The method of passing inspection data is not limited to communication. The battery 50 may be provided with a connection port (an example of an input unit) to which an electronic medium such as a USB memory can be connected, and inspection data may be input via the electronic media.
　（５）実施形態では、現在の放電容量Ｃのデータと、記憶部１１３に検査履歴として記憶された過去の放電容量Ｃのデータと、から放電容量Ｃの時間推移を示す寿命曲線ＬＴを求めた。求めた寿命曲線ＬＴから組電池６０の寿命を判断した。現在の放電容量Ｃのデータと、記憶部１１３に検査履歴として記憶された過去の放電容量Ｃのデータと、から組電池６０の寿命を判断することが出来れば、寿命曲線ＬＴとは別の方法で、組電池６０の寿命を判断してもよい。例えば、放電容量Ｃの時間に対する低下率を求めて、放電容量Ｃの時間推移を予想することにより、寿命Ｔを判断してもよい。 (5) In the embodiment, the life curve LT showing the time transition of the discharge capacity C is obtained from the data of the current discharge capacity C and the data of the past discharge capacity C stored as the inspection history in the storage unit 113. .. The life of the assembled battery 60 was determined from the obtained life curve LT. If the life of the assembled battery 60 can be determined from the data of the current discharge capacity C and the data of the past discharge capacity C stored in the storage unit 113 as the inspection history, a method different from the life curve LT can be determined. Then, the life of the assembled battery 60 may be determined. For example, the life T may be determined by obtaining the rate of decrease of the discharge capacity C with respect to time and predicting the time transition of the discharge capacity C.
　５０　バッテリ（本発明の「蓄電装置」に相当）
　６０　組電池
　１００　管理部
　１１１　制御部
　１１３　記憶部
　１１５　通信部（本発明の「入力部」に相当）
　１５０　検査器
　１６０　電流センサ
　１７０　放電回路
　１８０　充電回路 50 Battery (corresponding to the "power storage device" of the present invention)
60 sets of batteries 100 Management unit 111 Control unit 113 Storage unit 115 Communication unit (corresponding to the "input unit" of the present invention)
150 Inspector 160 Current sensor 170 Discharge circuit 180 Charging circuit

Claims (6)

  1. 　蓄電装置であって、
    　蓄電セルと、
    　検査器を用いて計測された前記蓄電セルの寿命に関する検査データが入力される入力部と、
    　入力された検査データを検査履歴として記憶する記憶部と、
    　制御部と、を備え、
    　前記制御部は、前記入力部に前記蓄電セルの検査データの入力があった場合、
    　入力された現在の検査データと、前記記憶部に検査履歴として記憶されている過去の検査データとに基づいて、前記蓄電セルの寿命を判断する、蓄電装置。     It ’s a power storage device.
    The storage cell and
    An input unit for inputting inspection data regarding the life of the storage cell measured using an inspection device, and an input unit.
    A storage unit that stores the input inspection data as an inspection history,
    With a control unit,
    When the input unit receives input of inspection data of the storage cell, the control unit may use the control unit.
    A power storage device that determines the life of the storage cell based on the input current inspection data and the past inspection data stored in the storage unit as inspection history.
  2. 　請求項１に記載の蓄電装置であって、
    　前記記憶部は、複数の整備場で計測された複数の検査データを、検査履歴として記憶し、
    　前記制御部は、前記入力部に入力された現在の検査データと、前記記憶部に検査履歴として記憶されている複数の整備場で計測された複数の検査データと、に基づいて、前記蓄電セルの寿命を判断する、蓄電装置。     The power storage device according to claim 1.
    The storage unit stores a plurality of inspection data measured at a plurality of maintenance sites as an inspection history, and stores the inspection data.
    The control unit is based on the current inspection data input to the input unit and a plurality of inspection data measured at a plurality of maintenance sites stored as inspection history in the storage unit. A power storage device that determines the life of the device.
  3. 　請求項１又は２に記載の蓄電装置であって、
    　前記制御部は、現在の検査データと過去の検査データとに基づいて、前記検査データの時間推移を示す寿命曲線を求め、求めた寿命曲線より前記蓄電セルの寿命を判断する、蓄電装置。     The power storage device according to claim 1 or 2.
    The control unit is a power storage device that obtains a life curve showing the time transition of the inspection data based on the current inspection data and the past inspection data, and determines the life of the power storage cell from the obtained life curve.
  4. 　請求項３に記載の蓄電装置であって、
    　前記制御部は、前記蓄電セルの検査データが入力される毎に、現在の検査データと過去に行った検査データとに基づいて、前記蓄電セルの寿命曲線を更新する、蓄電装置。     The power storage device according to claim 3.
    The control unit is a power storage device that updates the life curve of the power storage cell based on the current inspection data and the inspection data performed in the past each time the inspection data of the power storage cell is input.
  5. 　請求項１～請求項４のいずれか一項に記載の蓄電装置であって、
    　前記入力部は、前記検査器と通信可能な通信部であり、前記検査器から通信により前記検査データを受信する、蓄電装置。     The power storage device according to any one of claims 1 to 4.
    The input unit is a communication unit capable of communicating with the inspection device, and is a power storage device that receives the inspection data from the inspection device by communication.
  6. 　蓄電装置の寿命判断方法であって、
    　前記蓄電装置は、蓄電セルと、検査器を用いて計測された前記蓄電セルの寿命に関する検査データが入力される入力部と、入力された検査データを検査履歴として記憶する記憶部と、を含み、
    　前記入力部に前記蓄電セルの検査データの入力があった場合、入力された現在の検査データと、前記記憶部に検査履歴として記憶されている過去の検査データとに基づいて、前記蓄電セルの寿命を判断する、寿命判断方法。     It is a method of determining the life of a power storage device.
    The power storage device includes a power storage cell, an input unit for inputting inspection data relating to the life of the power storage cell measured using an inspection device, and a storage unit for storing the input inspection data as an inspection history. ,
    When the inspection data of the storage cell is input to the input unit, the storage cell is based on the input current inspection data and the past inspection data stored as the inspection history in the storage unit. Lifespan judgment method to judge the lifespan.
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