WO2014141747A1 - 電池システム - Google Patents
電池システム Download PDFInfo
- Publication number
- WO2014141747A1 WO2014141747A1 PCT/JP2014/051245 JP2014051245W WO2014141747A1 WO 2014141747 A1 WO2014141747 A1 WO 2014141747A1 JP 2014051245 W JP2014051245 W JP 2014051245W WO 2014141747 A1 WO2014141747 A1 WO 2014141747A1
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- Prior art keywords
- battery
- voltage
- monitor
- battery system
- batteries
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- 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
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- 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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- 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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
- H02J7/0049—Detection of fully charged condition
-
- 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 battery system including a battery.
- battery systems equipped with secondary batteries such as lithium ion batteries have been used for various purposes.
- Such battery systems include, for example, backup power supply for the purpose of dealing with power outages in electronic devices in the home, power supply for outdoor stationary houses, auxiliary power supply in factories and plant facilities, Used for backup power supply in office buildings.
- Such a battery system is used for power peak cut and peak shift for the purpose of using nighttime power while avoiding peak power consumption during the daytime.
- the battery system described above is required not only to have a high capacity and a high voltage, but also to have high safety and economy as the application spreads.
- Patent Document 1 Japanese Patent Laid-Open No. 2011-109768
- a connection object to be charged / discharged is not attached to the battery pack. Discloses a technique for shutting down a protection circuit.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2008-1252678 describes a case where a battery pack having a protection circuit for protecting a battery does not receive a command indicating that information on remaining battery capacity is requested from an external device. Discloses a technique for transitioning the operating state of the protection circuit to an operating state with low power consumption.
- the power consumption can be reduced and the economic efficiency can be improved by stopping the protection circuit or changing to a low power consumption operation state. it can.
- the protection circuit detects the voltage value of the battery using ADC (Analog to Digital Converter), and protects the battery according to the detected voltage value. If a plurality of such protection circuits are operated, the power consumption by the ADC of each protection circuit increases the power consumption in the system and the economic efficiency is impaired.
- ADC Analog to Digital Converter
- An object of the present invention is to provide a battery system capable of achieving both safety and economy.
- the battery system of the present invention provides: Multiple batteries, A first monitor that inputs the output of the battery, compares it with a predetermined threshold, and outputs a signal indicating the result; A second monitor unit that detects a voltage value of the battery and outputs a signal indicating the detected voltage value; A first operation mode in which the first monitor unit and the second monitor unit are stopped; a second operation mode in which the first monitor unit is operated; and the second monitor unit is stopped; And a third operation mode in which the first monitor unit and the second monitor unit operate.
- FIG. 1 is a block diagram showing a configuration of a battery system 100 according to an embodiment of the present invention.
- the battery system according to the present invention is connected to a connection object including a system controller 130 for controlling the operation of the entire system, a power converter 140 for performing AC-DC conversion, an external display operation panel 150 for operation input, and the like. Is done.
- the battery system 100 is connected to a switchboard or the like (not shown) through the connection object, and supplies power.
- FIG. 1 has a battery unit 110 and a protection unit 120.
- the battery system 100 shown in FIG. 1 has a battery unit 110 and a protection unit 120.
- the battery unit 110 includes a plurality of rechargeable batteries 111 such as lithium ion batteries.
- the battery unit 110 has a configuration in which a plurality of batteries 111 are connected in series.
- the battery unit 110 may be configured with a single battery 111 or may be configured with a plurality of batteries 111 connected in parallel or in a matrix.
- the protection unit 120 performs a protection operation of the battery 111 of the battery unit 110.
- the protection unit 120 includes a threshold determination IC (Integrated Circuit) 121, a monitor IC 122, a charge / discharge switch 123, a detection resistor 124, a microcomputer (hereinafter referred to as a microcomputer) 125, and an OR circuit 126.
- the threshold determination IC 121 is an example of a first monitor unit
- the monitor IC 122 is an example of a second monitor unit.
- the threshold determination IC 121 inputs the output of each of the plurality of batteries 111 and compares it with a predetermined threshold.
- the predetermined threshold is a value that can determine whether or not the voltage of the battery 111 is a dangerous voltage.
- the overcharge protection voltage threshold and the overdischarge protection voltage threshold can be raised, but the present invention is not limited thereto.
- the threshold determination IC 121 may be configured to determine whether or not it is a dangerous voltage based on whether or not it is included in a voltage range including two predetermined thresholds.
- a voltage range composed of an overcharge protection voltage threshold and an overdischarge protection voltage threshold can be raised, but is not limited thereto.
- the threshold determination IC 121 outputs a signal indicating the comparison result (a signal indicating whether or not the voltage of the battery 111 is a dangerous voltage) to the OR circuit 126.
- the threshold determination IC 121 only compares the output of the battery 111 with a predetermined threshold, so that it is not necessary to detect the voltage value itself of the battery 111 and can be configured by a simple circuit such as a comparator. . Therefore, the average power consumption of the threshold determination IC 121 is small.
- the monitor IC 122 detects the voltage value of each of the plurality of batteries 111 and outputs a signal indicating the detected voltage value to the microcomputer 125.
- the monitor IC 122 includes an ADC, and detects the voltage value of the battery 111 by the ADC. Since the monitor IC 122 includes an ADC, the average power consumption is higher than that of the threshold determination IC 121 configured by a simple circuit such as a comparator.
- the charge / discharge switch 123 is provided on the wiring that connects the battery unit 110 and the connection object. When the charge / discharge switch 123 is turned on, power can be supplied from the battery unit 110 to the connection target, and when the charge / discharge switch 123 is turned off, power is supplied from the battery unit 110 to the connection target. Is cut off.
- the detection resistor 124 is provided on the wiring that connects the battery unit 110 and the connection object.
- the microcomputer 125 outputs a signal indicating whether or not the voltage of the battery 111 is a dangerous voltage to the OR circuit 126 based on the signal output from the monitor IC 122. Further, the microcomputer 125 detects the current value of the current flowing through the detection resistor 124, and performs processing such as balancing the voltages between the plurality of batteries 111 based on the detection result and the signal output from the monitor IC 122. Do.
- the OR circuit 126 charges / discharges a signal indicating that the charge / discharge switch 123 is turned off when a signal indicating that the voltage of the battery 111 is a dangerous voltage is output from at least one of the threshold determination IC 121 and the microcomputer 125. Output to the switch 123 to turn off the charge / discharge switch 123.
- the threshold determination IC 121 and the microcomputer 125 each output a signal indicating whether or not the voltage of the battery 111 is a dangerous voltage to the OR circuit 126, and the OR circuit 126 indicates that the voltage of the battery 111 is a dangerous voltage.
- the charge / discharge switch 123 is turned off when a signal indicating the above is output.
- the threshold determination IC 121 and the microcomputer 125 may each output an alarm to the system controller 130 that performs processing for an error in the battery system 100 when the voltage of the battery 111 is a dangerous voltage.
- the battery system 100 of the present embodiment has three operation modes.
- the first operation mode is a sleep mode. In the sleep mode, the threshold determination IC 121 and the monitor IC 122 are stopped.
- the battery system 100 operates in the sleep mode in a state where the connection target is not connected (storage state), or in a state where the connection target is connected but the connection target is not turned on. In such a state, since it is not necessary to output an alarm, the threshold determination IC 121 and the monitor IC 122 are stopped. Since threshold determination IC 121 and monitor IC 122 are stopped, monitoring of the voltage value of battery 111 is completely stopped, and power consumption in battery system 100 is minimized.
- the second operation mode is a standby mode. In the standby mode, the monitor IC 122 stops and the threshold determination IC 121 operates.
- the battery system 100 operates in the standby mode in a state where the connection target is connected and the connection target is turned on, but a command for monitoring the state of the battery 111 is not transmitted from the system controller 130. .
- the state operating in the standby mode the following can be raised. That is, in the battery system for peak cut / peak shift for office use, there is a state immediately after the battery 111 is fully charged after being charged at night.
- a battery system is installed in a household storage battery system, there is a state in which charging is completed and not used due to reasons such as a resident being before residence. Further, in the backup battery system, the state immediately after the power failure is resolved and the charging of the battery 111 is completed.
- the charging / discharging operation is not performed, and therefore the system controller 130 does not need to transmit a command and perform monitoring by the monitor IC 122.
- the battery system 100 may remain in a standby state for a long period of time. In such a case, by operating in the standby mode, the battery 111 can be protected while suppressing power consumption.
- the monitor IC 122 In the standby mode, since the monitor IC 122 is stopped, the voltage value itself of the battery 111 cannot be detected, and the voltage between the batteries 111 cannot be balanced. However, since the threshold determination IC 121 is operating, it can be determined whether or not the voltage of the battery 111 is a dangerous voltage. Therefore, when an abnormality occurs in the battery 111, an alarm can be output to the system controller 130. Moreover, since the monitor IC 122 having a large average power consumption is stopped, the power consumption in the battery system 100 is suppressed. Thus, in the standby mode, the battery 111 can be protected with low power consumption.
- the third operation mode is a normal operation mode.
- the threshold determination IC 121 and the monitor IC 122 operate.
- the battery system 100 operates in the normal operation mode in a state where the connection target is connected, the power of the connection target is turned on, and charging / discharging is performed.
- the threshold determination IC 121 and the monitor IC 122 are operating. Therefore, it is determined whether or not the voltage of the battery 111 is a dangerous voltage based on the comparison with the predetermined threshold by the threshold determination IC 121. If the voltage of the battery 111 is a dangerous voltage, the fact that it is dangerous is displayed on the external display operation panel 150 via the system controller 130, and an appropriate action is prompted to the user. Further, the charge / discharge switch 123 is turned off, and the supply of power is stopped. Further, the microcomputer 125 performs a process of determining whether or not the voltage of the battery 111 is a dangerous voltage based on the detection result of the monitor IC 122 and balancing the voltage between the batteries.
- the battery 111 can be sufficiently protected.
- the threshold determination IC 121 if the threshold determination IC 121 is operating, it is possible to determine whether or not the voltage of the battery 111 is a dangerous voltage. The voltage of 111 is not left as a dangerous voltage, and safety can be further improved.
- the operation mode of the battery system 100 is switched in accordance with, for example, an input from the administrator.
- the battery system 100 inputs the outputs of the plurality of batteries 111 and the plurality of batteries 111, compares them with a predetermined threshold value, and outputs a signal indicating the result.
- a sleep mode in which the threshold determination IC 121 and the monitor IC 122 are stopped, the threshold determination IC 121, and a monitor IC 122 that detects a voltage value of each of the plurality of batteries 111 and outputs a signal indicating the detected voltage value;
- a standby mode in which the IC 121 operates and the monitor IC 122 stops and a normal operation mode in which the threshold determination IC 121 and the monitor IC 122 operate are provided.
- the threshold determination IC 121 can be configured with a simple circuit, it consumes less power than the monitor IC 122. For this reason, the threshold determination IC 121 and the monitor IC 122 are operated or stopped by switching the operation mode according to the usage state of the battery 100, thereby improving safety and improving economy by reducing power consumption. it can.
- the threshold determination IC 121, the monitor IC 122, the charge / discharge switch 123, the detection resistor 124, the microcomputer 125, and the OR circuit 126 are described using an example configured on one substrate. The configuration is not limited to this.
- FIG. 2 is a block diagram showing a configuration of a battery system 100A having a configuration different from that of the battery system 100 shown in FIG. In FIG. 2, the same components as those in FIG.
- the battery system 100 ⁇ / b> A shown in FIG. 2 is obtained by removing the protection unit 120, adding a voltage monitoring unit 210, a current monitoring unit 220, and a control unit 230. Is different.
- the voltage monitoring unit 210 includes a threshold determination IC 121, a monitor IC 122, a microcomputer 211, and an OR circuit 212.
- the current monitoring unit 220 includes a charge / discharge switch 123, a detection resistor 124, a current detection unit 221, and a microcomputer 222.
- the control unit 230 includes a microcomputer 231. The voltage monitoring unit 210, the current monitoring unit 220, and the control unit 230 are each configured on different substrates.
- the voltage monitoring unit 210 monitors the voltage of each of the plurality of batteries 111.
- the microcomputer 211 outputs a signal indicating whether or not the voltage of the battery 111 is a dangerous voltage to the OR circuit 212 based on the signal output from the monitor IC 122. Further, the microcomputer 211 outputs a signal indicating the voltage value of each of the plurality of batteries 111 detected by the monitor IC 122 to the microcomputer 231.
- the OR circuit 212 When a signal indicating that the voltage of the battery 111 is a dangerous voltage is output from at least one of the threshold determination IC 121 and the microcomputer 211, the OR circuit 212 outputs a signal indicating that the charge / discharge switch 123 is turned off to the microcomputer 231. Output to.
- the current monitoring unit 220 detects the current value of the current flowing through the detection resistor 124 and outputs a signal corresponding to the detection result to the microcomputer 231.
- the current detection unit 221 detects the current value of the current flowing through the detection resistor 124 and outputs a signal indicating the detected current value to the microcomputer 222.
- the microcomputer 222 outputs a signal indicating that the charge / discharge switch 123 is turned off to the microcomputer 231 when the current value detected by the current detection unit 221 is an abnormal value.
- the control unit 230 performs processing such as on / off control of the charge / discharge switch 123 and balancing of voltages among the plurality of batteries 111.
- the microcomputer 231 turns off the charge / discharge switch 123 when a signal indicating that the charge / discharge switch 123 is turned off is output from the OR circuit 212 or the microcomputer 222. Further, the microcomputer 231 performs processing such as balancing the voltages among the batteries 111 based on the voltage values of the plurality of batteries 111 indicated by the signal output from the microcomputer 211.
- the configuration shown in FIG. 1 or 2 is merely an example, and the present invention is not limited to that configuration. That is, the battery system 100, 100A of the present embodiment has the configuration of FIG. 3 or FIG. 4 and is connected to an arbitrary connection target that is a power supply target, and is charged and discharged with the connection target. Is possible.
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
Description
複数の電池と、
前記電池の出力を入力して所定の閾値との比較を行い、その結果を示す信号を出力する第1のモニタ部と、
前記電池の電圧値を検出し、該検出した電圧値を示す信号を出力する第2のモニタ部と、を有し、
前記第1のモニタ部および前記第2のモニタ部が停止した第1の動作モードと、前記第1のモニタ部が動作し、前記第2のモニタ部が停止した第2の動作モードと、前記第1のモニタ部および前記第2のモニタ部が動作する第3の動作モードと、を備える。
Claims (2)
- 複数の電池と、
前記電池の出力を入力して所定の閾値との比較を行い、その結果を示す信号を出力する第1のモニタ部と、
前記電池の電圧値を検出し、該検出した電圧値を示す信号を出力する第2のモニタ部と、を有し、
前記第1のモニタ部および前記第2のモニタ部が停止した第1の動作モードと、前記第1のモニタ部が動作し、前記第2のモニタ部が停止した第2の動作モードと、前記第1のモニタ部および前記第2のモニタ部が動作する第3の動作モードと、を備えることを特徴とする電池システム。 - 請求項1記載の電池システムにおいて、
前記電池と前記電池システムの接続対象物とを接続する配線上に設けられ、前記第1のモニタ部から出力された信号および前記第2のモニタ部から出力された信号の少なくともいずれか一方に応じて、オンまたはオフとなる充放電スイッチをさらに備えることを特徴とする電池システム。
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JP2015505312A JP6288722B2 (ja) | 2013-03-14 | 2014-01-22 | 電池システム |
US14/775,303 US9847657B2 (en) | 2013-03-14 | 2014-01-22 | Battery system |
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JP2013051874 | 2013-03-14 | ||
JP2013-051874 | 2013-03-14 |
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Cited By (1)
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JP2016086523A (ja) * | 2014-10-24 | 2016-05-19 | 株式会社豊田自動織機 | 電池監視装置 |
Families Citing this family (6)
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CN206067600U (zh) * | 2016-09-27 | 2017-04-05 | 汪玉华 | 车载照明装置 |
TWM564746U (zh) * | 2018-04-24 | 2018-08-01 | 穩態光電科技股份有限公司 | Load-adaptive power supply |
DE102019201968A1 (de) * | 2018-05-08 | 2019-11-14 | Robert Bosch Gmbh | Batterieeinheit und Verfahren zum Betrieb einer Batterieeinheit |
WO2019220804A1 (ja) * | 2018-05-14 | 2019-11-21 | 三洋電機株式会社 | 管理装置、蓄電システム |
TWI775100B (zh) * | 2020-06-22 | 2022-08-21 | 宏碁股份有限公司 | 電池模組 |
US11984748B2 (en) * | 2022-03-25 | 2024-05-14 | Xiamen Hechu Energy Technology Co., Ltd. | Battery module based on full current control and battery energy storage system |
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JP2016086523A (ja) * | 2014-10-24 | 2016-05-19 | 株式会社豊田自動織機 | 電池監視装置 |
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US9847657B2 (en) | 2017-12-19 |
US20160028257A1 (en) | 2016-01-28 |
JP6288722B2 (ja) | 2018-03-07 |
JPWO2014141747A1 (ja) | 2017-02-16 |
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