WO2015156210A1 - 電池監視装置 - Google Patents
電池監視装置 Download PDFInfo
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- WO2015156210A1 WO2015156210A1 PCT/JP2015/060520 JP2015060520W WO2015156210A1 WO 2015156210 A1 WO2015156210 A1 WO 2015156210A1 JP 2015060520 W JP2015060520 W JP 2015060520W WO 2015156210 A1 WO2015156210 A1 WO 2015156210A1
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- battery
- monitoring
- control unit
- power supply
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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
- H01M10/48—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
-
- 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]
-
- 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]
- G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
-
- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- 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]
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a battery monitoring device that monitors the state of a battery.
- a battery monitoring device for example, as disclosed in Patent Document 1, there is a device that monitors the state (overcharge, overdischarge, etc.) of a battery used in a vehicle.
- the control unit determines that an abnormality has occurred in the battery based on the state information indicating the state of the battery transmitted from the monitoring unit, a power cutoff request is transmitted from the control unit to the monitoring unit, and the battery Some power supplies to the load are cut off.
- the present invention provides a battery monitoring device that cuts off the power supply to the monitoring unit, so that even if a communication abnormality occurs between the monitoring unit and the control unit or an abnormality occurs in the monitoring unit, the battery The purpose is to cut off the power supply to the load.
- the battery monitoring apparatus includes first and second blocking units, a monitoring unit, and a control unit.
- the monitoring unit transmits state information indicating the state of the battery.
- the monitoring unit cuts off the power supply from the battery to the load by the first cutoff unit.
- control unit determines that an abnormality has occurred in the battery based on the status information transmitted from the monitoring unit, the control unit transmits a power interruption request to the monitoring unit.
- the control unit determines that a communication abnormality has occurred between the monitoring unit and the control unit, or an abnormality has occurred in the monitoring unit, the power supply to the monitoring unit is blocked by the second blocking unit.
- the power supply from the battery to the load can be cut off.
- a power cutoff request is transmitted from the control unit to the monitoring unit, and the power supply from the battery to the load is cut off.
- the power supply from the battery to the load can be cut off.
- FIG. 1 is a diagram illustrating an example of a battery pack.
- a battery pack 1 shown in FIG. 1 is mounted on, for example, a vehicle (for example, an electric forklift, a hybrid vehicle, or an electric vehicle), and includes a battery module 2 and a control ECU (Electronic Control Unit) 3. Prepare.
- a vehicle for example, an electric forklift, a hybrid vehicle, or an electric vehicle
- a control ECU Electric Control Unit
- the battery module 2 includes a battery 21, a blocking unit 22 (first blocking unit), a monitoring ECU 23, a voltage detection unit 24, a current detection unit 25, and a temperature detection unit 26.
- the battery 21 includes seven batteries (for example, a lithium ion secondary battery and a nickel metal hydride battery) connected in series. Note that the number of batteries constituting the battery 21 is not limited to seven.
- the blocking unit 22 includes N-channel MOSFETs (Metal Oxide Semiconductors Field Effect Transistors) 221 and 222, and a drive circuit 223 that controls the operation of the MOSFETs 221 and 222. That is, the drain terminal of the MOSFET 221 is connected to the negative terminal of the battery 21, the source terminal of the MOSFET 221 is connected to the source terminal of the MOSFET 222, and the drain terminal of the MOSFET 222 is connected to the load 4 (for example, a vehicle driving motor). .
- the MOSFETs 221 and 222 are turned on, power is supplied from the battery 21 to the load 4.
- the MOSFETs 221 and 222 are turned off, power supply from the battery 21 to the load 4 is cut off.
- the MOSFETs 221 and 222 may be replaced with other transistors such as bipolar transistors or mechanical relays. Further, the blocking unit 22 may be provided between the positive terminal of the battery 21 and the load 4.
- a low level signal is input to the gate terminals of the MOSFETs 221 and 222, the MOSFETs 221 and 222 are turned off, and the power supply from the battery 21 to the load 4 is cut off.
- the cut-off unit 22 cuts off the power supply from the battery 21 to the load 4.
- the voltage detection unit 24 is composed of, for example, a voltmeter, detects the voltage of the battery 21, and sends the detected voltage to the monitoring unit 233 described later.
- the current detection unit 25 includes, for example, an ammeter, detects the current flowing through the battery 21, and sends the detected current to the monitoring unit 233.
- the temperature detection unit 26 is composed of, for example, a thermistor, detects the temperature of the battery 21, and sends the detected temperature to the monitoring unit 233.
- the monitoring ECU 23 includes a power supply unit 231, a blocking unit 232 (third blocking unit), and a monitoring unit 233.
- the power supply unit 231 is configured by a DC / DC converter, for example, and supplies power to the drive circuit 223 of the blocking unit 22 using power supplied from the battery 21.
- the blocking unit 232 is configured by, for example, a transistor or a mechanical relay, and is provided between the battery 21 and the power supply unit 231. Further, the blocking unit 232 electrically connects or disconnects the battery 21 and the power supply unit 231. When the battery 21 and the power supply unit 231 are electrically connected by the blocking unit 232, power is supplied to the drive circuit 223, and when the battery 21 and the power supply unit 231 are electrically disconnected by the blocking unit 232, driving is performed. The power supply to the circuit 223 is cut off. Note that the blocking unit 232 may be provided between the power supply unit 231 and the drive circuit 223.
- the monitoring unit 233 includes, for example, a CPU (Central Processing Unit), a multi-core CPU, a programmable device (FPGA (Field Programmable Gate Array), PLD (Programmable Logic Device, etc.)), and the like.
- a status information transmission request transmitted from the control ECU 3 the voltage transmitted from the voltage detection unit 24, the current transmitted from the current detection unit 25, and the temperature detection unit 26. Is sent to the control ECU 3 as state information indicating the state of the battery 21.
- the monitoring unit 233 causes the cutoff unit 22 or the cutoff unit 232 to cut off power supply from the battery 21 to the load 4.
- the monitoring unit 233 illustrated in FIG. 1 is configured to be driven by power supplied from the battery 21 via the control ECU 3, but is driven by power supplied from a battery other than the battery 21 or a power source. It may be configured.
- the control ECU 3 includes a power supply unit 31, a blocking unit 32 (second blocking unit), and a control unit 33.
- the power supply unit 31 is configured by, for example, a DC / DC converter, and supplies power to the control unit 33 using power supplied from the battery 21 or supplies power to the monitoring unit 233 via the cutoff unit 32. To do.
- the blocking unit 32 is configured by, for example, a transistor or a mechanical relay, and is provided between the power supply unit 31 and the monitoring unit 233. Further, the blocking unit 32 electrically connects or disconnects the power supply unit 31 and the monitoring unit 233. When the power supply unit 31 and the monitoring unit 233 are electrically connected by the blocking unit 32, power is supplied to the monitoring unit 233, and when the power supply unit 31 and the monitoring unit 233 are electrically disconnected by the blocking unit 32. The power supply to the monitoring unit 233 is cut off.
- the control unit 33 includes, for example, a CPU, a multi-core CPU, a programmable device, and the like. For example, the control unit 33 transmits a status information transmission request to the monitoring unit 233 every elapse of a predetermined time. For example, when the control unit 33 determines that an abnormality has occurred in the battery 21, the control unit 33 transmits a power cut instruction to the monitoring unit 233. For example, when the control unit 33 determines that a communication abnormality has occurred between the monitoring unit 233 and the control unit 33 or determines that an abnormality has occurred in the monitoring unit 233, the blocking unit 32 causes the monitoring unit 233 to The power supply to is cut off. Further, for example, when the control unit 33 is activated by an instruction from a user or the like, the control unit 33 activates the monitoring unit 233.
- the battery monitoring apparatus includes, for example, a blocking unit 22, a blocking unit 32, a monitoring unit 233, and a control unit 33.
- FIG. 2 is a flowchart showing an example of the operation of the monitoring unit 233 in the battery monitoring device of the embodiment.
- the monitoring unit 233 receives the status information transmission request transmitted from the control unit 33 after starting itself or after receiving the previous status information transmission request until a predetermined time T1 elapses. Then (S21: Yes), the state information is transmitted to the control unit 33 (S22).
- the monitoring unit 233 issues a power cut-off instruction transmitted from the control unit 33 during a certain period of time T1 after the start of the monitoring unit 233 or after receiving the previous status information transmission request.
- S21: No, S23: Yes the operation of the blocking unit 22 and the blocking unit 232 is controlled so that the power supply from the battery 21 to the load 4 is blocked (S24).
- the operation of the blocking unit 22 and the blocking unit 232 is controlled so that the power supply from the battery 21 to the load 4 is blocked (S24).
- the monitoring unit 233 outputs a low level signal to the gate terminals of the MOSFETs 221 and 222 via the drive circuit 223 when receiving a power cutoff instruction or when power supply to itself is cut off. Further, for example, the monitoring unit 233 controls the operation of the cutoff unit 232 so that the battery 21 and the power source unit 231 are electrically disconnected when receiving a power cutoff instruction or when the power supply to itself is cut off. As a result, the power supply from the power supply unit 231 to the drive circuit 223 is interrupted, and a low level signal is output to the gate terminals of the MOSFETs 221 and 222. Thereby, the MOSFETs 221 and 222 are turned off, and the power supply from the battery 21 to the load 4 is cut off.
- the monitoring unit 233 receives the status information transmission request or the power cutoff instruction without receiving the status information transmission request or the power cutoff instruction, or after receiving the previous status information transmission request. If it is determined that a certain time T1 has elapsed, that is, if it is determined that a communication abnormality has occurred between the monitoring unit 233 and the control unit 33 (S21: No, S23: No, S25: No, S26: Yes) ) And shift to the sleep mode (S27). For example, when the monitoring unit 233 shifts to the sleep mode, the monitoring unit 233 stops some functions (for example, functions other than the communication function) among all the functions provided in itself. Thereby, the power consumption of the battery 21 can be reduced.
- some functions for example, functions other than the communication function
- the monitoring unit 233 completes the data writing process so that the data writing process is not completed in the middle of the process and the data is not damaged when shifting to the sleep mode while the data is being written to the storage unit such as the flash memory. Then go to sleep mode.
- the monitoring unit 233 receives the status information transmission request and the status information when no abnormality has occurred in the battery 21 and no communication abnormality has occurred between the monitoring unit 233 and the control unit 33. Transmission is repeated (S21 to S22).
- FIG. 3 is a flowchart showing an example of the operation of the control unit 33 in the battery monitoring apparatus of the embodiment.
- control unit 33 starts up, the control unit 33 starts a periodical communication process for transmitting a status information transmission request every elapse of a predetermined time T2 (S31).
- control unit 33 uses the state information to transmit the battery 21. It is determined whether or not an abnormality has occurred (S33).
- the control unit 33 determines that an abnormality has occurred in the battery 21 (S33: Yes)
- the control unit 33 transmits a power interruption instruction to the monitoring unit 233 (S34), and determines that no abnormality has occurred in the battery 21 (S33: No)
- the control unit 33 determines that an abnormality has occurred in the battery 21 when at least one of the voltage, current, and temperature indicated in the state information is greater than or equal to the threshold, and the voltage, current, and temperature indicated in the state information. Are all smaller than the threshold value, it is determined that no abnormality has occurred in the battery 21.
- control unit 33 determines that the state information has not been received after the transmission of the state information transmission request until the fixed time T3 elapses, that is, between the monitoring unit 233 and the control unit 33.
- the power supply to the monitoring unit 233 is cut off after a certain period of time T4 has elapsed (S36: Yes) after the regular communication process is terminated (S35).
- the operation of the blocking unit 32 is controlled (S37).
- produces between the monitoring part 233 and the control part 33, for example, a communication line is disconnected or short-circuited between the monitoring part 233 and the control part 33, or the communication function of the monitoring part 233 May break down.
- the monitoring unit 233 when receiving the status information transmission request periodically transmitted from the control unit 33, the monitoring unit 233 transmits the status information to the control unit 33, and transmits the status information transmission request periodically transmitted from the control unit 33. If it cannot be received, it shifts to sleep mode.
- the cutoff unit 22 or the cutoff unit 232 cuts off the power supply from the battery 21 to the load 4.
- control unit 33 determines that a communication abnormality has occurred between the monitoring unit 233 and the control unit 33, the control unit 33 shuts off after a predetermined time T4 has elapsed since the process of periodically transmitting the status information transmission request has ended.
- the power supply to the monitoring unit 233 is cut off by the unit 32.
- the fixed time T4 is set to be equal to or longer than the time required for the monitoring unit 233 to complete the transition to the sleep mode after the process of periodically transmitting the status information transmission request in the control unit 33 is completed.
- the process of S35 may be omitted.
- the control unit 33 determines that a communication abnormality has occurred between the monitoring unit 233 and the control unit 33 (S32: No)
- the control unit 33 does not end the process of periodically transmitting the state information transmission request, and does not end the process.
- T4 the elapse of time T4
- the operation of the blocking unit 32 is controlled so that the power supply to the monitoring unit 233 is blocked (S37).
- the processes of S35 and S36 may be omitted.
- the control unit 33 determines that a communication abnormality has occurred between the monitoring unit 233 and the control unit 33 (S32: No)
- the process of periodically transmitting the status information transmission request is not terminated.
- the operation of the blocking unit 32 is controlled so that the power supply to the monitoring unit 233 is blocked without waiting for a certain time T4 (S37).
- the control unit 33 determines that an abnormality has occurred in the battery 21 (S33: Yes), and transmits a power cutoff instruction to the monitoring unit 233 (S34). If it is determined that an abnormality has occurred in the monitoring unit 233 by determining that the power supply to the load 4 is not interrupted (S38: Yes), the process proceeds to S37, and the power to the monitoring unit 233 is determined. You may control the operation
- the control unit 33 transmits a power cutoff instruction to the monitoring unit 233, and then when the current indicated by the state information transmitted from the monitoring unit 233 (the current flowing through the battery 21) is equal to or greater than a threshold value, the control unit 33 loads the load. 4 determines that the power supply to 4 is not interrupted.
- blocking part 232 are disconnected or short-circuited, for example. It is conceivable that the function for controlling the operation of the blocking unit 22 and the blocking unit 232 in the monitoring unit 233 fails.
- S31 to S37 in the flowchart shown in FIG. 4 are the same as S31 to S37 in the flowchart shown in FIG.
- a communication abnormality that occurs between the monitoring unit 233 and the control unit 33 that is, an abnormality in which a status information transmission request or a power cut-off instruction does not reach the monitoring unit 233 from the control unit 33, Or, an abnormality that the control unit 33 cannot confirm whether or not the processing corresponding to the status information transmission request or the power interruption instruction has been executed) or an abnormality that occurs in the monitoring unit 233 (that is, the control unit)
- a status information transmission request or a power shut-off instruction arrives from 33 to the monitoring unit 233, an abnormality in which the monitoring unit 233 cannot execute processing corresponding to the request or instruction is conceivable.
- the blocking unit The power supply to the monitoring unit 233 is interrupted by 32. Further, when the power supply to the monitoring unit 233 is cut off, the MOSFETs 221 and 222 are turned off. Thereby, even if a communication abnormality occurs between the monitoring unit 233 and the control unit 33 or an abnormality occurs in the monitoring unit 233, the power supply from the battery 21 to the load 4 can be cut off.
- the control unit 33 determines that a communication abnormality has occurred between the monitoring unit 233 and the control unit 33, the control unit 33 ends the process of periodically transmitting the status information transmission request.
- the power supply to the monitoring unit 233 is cut off by the cut-off unit 32 after a certain time T4 has elapsed.
- a status information transmission request can be transmitted from the control unit 33 to the monitoring unit 233, but even if a communication abnormality occurs in a state where the status information cannot be transmitted from the monitoring unit 233 to the control unit 33, Since it is possible to prevent the power supply to the monitoring unit 233 from being cut off until the transition to the sleep mode is completed in the monitoring unit 233, the power supply to the monitoring unit 233 is not cut off during data writing. Can be prevented from being damaged.
- the monitoring unit 233 blocks the power supply to the cutoff unit 22 by the cutoff unit 232. Moreover, the interruption
- the battery pack 1 is configured to include one battery module 2.
- a plurality of battery modules 2 (2-1, 2-2) , etc.
- the batteries 21 are connected in parallel to each other.
- the power supply terminals of the monitoring unit 233 of each battery module 2 are connected to each other, and a blocking unit 32 is provided between the connection point and the power supply unit 31.
- the control unit 33 determines that at least one of the batteries 21 of each battery module 2 is abnormal based on the state information transmitted from the monitoring unit 233 of each battery module 2, Assume that a power cutoff signal is transmitted to the monitoring unit 233 of each battery module 2.
Abstract
Description
2 電池モジュール
3 制御ECU
4 負荷
21 電池
22、232、32 遮断部
23 監視ECU
24 電圧検出部
25 電流検出部
26 温度検出部
221、222 MOSFET
223 駆動回路
231 電源部
233 監視部
31 電源部
33 制御部
Claims (4)
- 第1及び第2の遮断部と、
電池の状態を示す状態情報を送信するとともに、電力遮断要求を受信すると又は自身への電力供給が遮断されると、前記第1の遮断部により前記電池から負荷への電力供給を遮断させる監視部と、
前記監視部から送信される前記状態情報により前記電池に異常が発生したと判断すると、前記電力遮断要求を前記監視部へ送信する制御部と、
を備え、
前記制御部は、前記監視部と前記制御部との間で通信異常が発生した、又は、前記監視部で異常が発生したと判断すると、前記第2の遮断部により前記監視部への電力供給を遮断させる
ことを特徴とする電池監視装置。 - 請求項1に記載の電池監視装置であって、
前記制御部は、前記監視部と前記制御部との間で通信異常が発生したと判断すると、一定時間経過後に、前記第2の遮断部により前記監視部への電力供給を遮断させる
ことを特徴とする電池監視装置。 - 請求項2に記載の電池監視装置であって、
前記監視部は、前記制御部から定期的に送信される状態情報送信要求を受信すると、前記状態情報を前記制御部へ送信し、前記制御部から定期的に送信される状態情報送信要求を受信できないと、スリープモードに移行し、
前記制御部は、前記監視部と前記制御部との間で通信異常が発生したと判断すると、前記状態情報送信要求を定期的に送信する処理を終了してから前記一定時間経過後に、前記第2の遮断部により前記監視部への電力供給を遮断させる
ことを特徴とする電池監視装置。 - 請求項1~3の何れか1項に記載の電池監視装置であって、
第3の遮断部を備え、
前記監視部は、自身への電力供給が遮断されると、前記第3の遮断部により前記第1の遮断部への電力供給を遮断させ、
前記第1の遮断部は、自身への電力供給が遮断されると、前記電池から前記負荷への電力供給を遮断する
ことを特徴とする電池監視装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016512691A JP6135823B2 (ja) | 2014-04-08 | 2015-04-02 | 電池監視装置 |
DE112015001745.3T DE112015001745B4 (de) | 2014-04-08 | 2015-04-02 | Batterieüberwachungsvorrichtung |
US15/129,189 US9966639B2 (en) | 2014-04-08 | 2015-04-02 | Battery monitoring device |
CN201580018533.5A CN106165239B (zh) | 2014-04-08 | 2015-04-02 | 电池监视装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014079103 | 2014-04-08 | ||
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US (1) | US9966639B2 (ja) |
JP (1) | JP6135823B2 (ja) |
CN (1) | CN106165239B (ja) |
DE (1) | DE112015001745B4 (ja) |
WO (1) | WO2015156210A1 (ja) |
Cited By (4)
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JP2015220828A (ja) * | 2014-05-16 | 2015-12-07 | 株式会社豊田自動織機 | 電池監視装置 |
CN106080229A (zh) * | 2016-06-08 | 2016-11-09 | 简式国际汽车设计(北京)有限公司 | 电池安全充电处理方法、装置及电池管理系统 |
JP2017221063A (ja) * | 2016-06-09 | 2017-12-14 | トヨタ自動車株式会社 | 電力システム及びその制御方法 |
CN106114227B (zh) * | 2016-06-30 | 2018-11-23 | 简式国际汽车设计(北京)有限公司 | 动力电池故障保护方法、装置及动力电池 |
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WO2017089871A1 (es) * | 2015-11-27 | 2017-06-01 | Centro De Investigación Científica De Yucatán, A. C. | Circuito electrónico para la cosecha de energía de fuentes de ultra baja potencia |
US10439409B2 (en) * | 2016-04-13 | 2019-10-08 | Microsoft Technology Licensing, Llc | Enhanced parallel protection circuit |
EP3462560B1 (en) * | 2017-09-27 | 2021-05-12 | Indielux UG (Haftungsbeschränkt) | A method and system for determining and controlling an electricity feed to an electricity grid from a load side of an electric circuit |
JP6903762B2 (ja) * | 2017-11-10 | 2021-07-14 | 株式会社東芝 | 蓄電池システム、方法及びプログラム |
JP7135548B2 (ja) * | 2018-08-01 | 2022-09-13 | 株式会社ジェイテクト | 電源監視装置及び電源監視方法 |
CN112638719A (zh) * | 2018-09-26 | 2021-04-09 | 株式会社杰士汤浅国际 | 检测装置和检测方法 |
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- 2015-04-02 US US15/129,189 patent/US9966639B2/en active Active
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Also Published As
Publication number | Publication date |
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DE112015001745T5 (de) | 2016-12-29 |
CN106165239B (zh) | 2018-04-03 |
US20170117595A1 (en) | 2017-04-27 |
CN106165239A (zh) | 2016-11-23 |
US9966639B2 (en) | 2018-05-08 |
DE112015001745T8 (de) | 2017-03-09 |
DE112015001745B4 (de) | 2018-01-11 |
JP6135823B2 (ja) | 2017-05-31 |
JPWO2015156210A1 (ja) | 2017-04-13 |
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