WO2019146520A1 - Dispositif de commande de batterie, bloc-batterie, procédé de commande de batterie et programme - Google Patents

Dispositif de commande de batterie, bloc-batterie, procédé de commande de batterie et programme Download PDF

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Publication number
WO2019146520A1
WO2019146520A1 PCT/JP2019/001443 JP2019001443W WO2019146520A1 WO 2019146520 A1 WO2019146520 A1 WO 2019146520A1 JP 2019001443 W JP2019001443 W JP 2019001443W WO 2019146520 A1 WO2019146520 A1 WO 2019146520A1
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Prior art keywords
battery pack
battery
information
abnormality
constant current
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PCT/JP2019/001443
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English (en)
Japanese (ja)
Inventor
誠 向野
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Ｎｅｃエナジーデバイス株式会社
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Priority to JP2019567041A priority Critical patent/JP7425607B2/ja
Publication of WO2019146520A1 publication Critical patent/WO2019146520A1/fr

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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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • 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 control technology of a secondary battery.
  • secondary batteries are used as a power source.
  • Patent Document 1 An example of a technology related to a secondary battery is disclosed in Patent Document 1 below.
  • an abnormality such as overcharge, overdischarge, overcurrent, or the like
  • constant current control is performed for a certain period of time instead of shutting down the circuit immediately, and then the abnormality is a secondary battery.
  • a battery pack is disclosed that has a protection circuit that shuts off the circuit if it is caused by a short circuit or the like.
  • an inrush current generated at the time of power on or the like may adversely affect the secondary battery or a circuit component connected to the secondary battery.
  • another problem may occur by forcibly stopping the secondary battery. For example, if the battery pack 10 is forcibly stopped while the unmanned air vehicle (eg, drone or the like) is flying, the unmanned air vehicle may be damaged by the impact of a fall. In such a case, it is necessary to continue using the secondary battery knowing that the secondary battery and the circuit components connected to the secondary battery are adversely affected.
  • the adverse effect on the secondary battery and each circuit component is naturally desirably as small as possible.
  • the present invention has been made in view of the above problems.
  • One of the objects of the present invention is to provide a technology for protecting circuit components including a secondary battery.
  • one of the objects of the present invention is to provide a technique for reducing the adverse effect in the case where a secondary battery with an abnormality is inevitably used.
  • Operation control means for controlling the operation during charging and discharging of the battery pack including the secondary battery,
  • the operation control unit operates the battery pack in a constant current mode at the start of operation of the battery pack or at the time of maintenance of the battery pack.
  • a first battery control device is provided.
  • Abnormality detection means for detecting an abnormality of the battery pack; An information storage unit that stores forced stop availability information indicating whether the battery pack is forcibly stopped; Operation control means for controlling the operation at the time of charge and discharge of the battery pack; The operation control means is When the abnormality detection unit detects an abnormality in the battery pack, it is determined whether the battery pack is operated in a constant current mode or forcibly stopped based on the forced stopability information stored in the information storage unit. decide, A second battery control device is provided.
  • a battery pack comprising at least
  • the computer is A first battery control method is provided that includes operating the battery pack in a constant current mode at the start of operation of a battery pack including a secondary battery or at the time of maintenance of the battery pack.
  • the computer is When abnormality of the battery pack is detected, the battery pack is operated in the constant current mode or forcibly stopped based on the forcible stopability information indicating whether the forcible stop of the battery pack is stored, which is stored in the information storage means. To decide A second battery control device is provided.
  • a program is provided that causes a computer to execute the first battery control method.
  • a program is provided that causes a computer to execute the second battery control method.
  • circuit components including a secondary battery can be protected. Further, according to the present invention, it is possible to reduce the adverse effect in the case of using a secondary battery having an abnormality without fail.
  • FIG. 1 is a diagram illustrating the configuration of the battery pack 10 according to the first embodiment.
  • the battery pack 10 includes a battery unit 110, a battery control unit 120, a constant current control unit 130, a voltage measurement unit 140, an external positive terminal 150, an external negative terminal 160, and an external communication terminal 170. ing.
  • the battery unit 110 includes at least one or more secondary batteries 111.
  • the battery unit 110 includes n secondary batteries 111 (secondary batteries 111 1 to secondary batteries 111 n ) connected in series.
  • the secondary battery 111 is, for example, a lithium ion battery or a nickel hydrogen battery.
  • the first resistor R C on the positive electrode side of the battery unit 110, the first resistor R C , the first switch element FET C , the second switch element FET D , and the second resistor R D are They are arranged in series in the order described.
  • the first switch element FET C is used to control the magnitude of the charging current of the battery unit 110.
  • the second switch element FET D is used to control the magnitude of the discharge current of the battery unit 110.
  • the first switch element FETC and the second switch element FETD are described as n-type MOSFETs (Metal Oxide Semiconductor Field Effect Transistors), but even if they are p-type MOSFETs Good.
  • the first resistor RC is used by the constant current control unit 130 described later to measure the magnitude of the charging current of the battery unit 110.
  • the second resistor RD is used by the constant current control unit 130 described later to measure the magnitude of the discharge current of the battery unit 110.
  • the battery control unit 120 controls the operation of the battery control unit 120 of the battery pack 10 based on measured values such as the voltage, current, and temperature of the battery pack 10. Details of the battery control unit 120 will be described later.
  • Constant current control unit 130 may be during charging of the battery unit 110, based on the voltage across the first resistor R C and the resistance value of the first resistor R C, and calculates the value of the charging current.
  • the constant current control unit 130 during discharging of the battery unit 110, the voltage value across the second resistor R D and based on the resistance value of the second resistor R D, and calculates the value of the discharge current Can.
  • the constant current control unit 130 also controls the charging current of the battery unit 110 by adjusting the gate voltage applied to the first switch element FET C in accordance with an instruction from the battery control unit 120.
  • the constant current control unit 130 by controlling the maximum value of the drain current of the first switching element FET C adjustments to the charging current of the gate voltage of the first switching element FET C, the battery pack 10 is constant The charging operation by the current becomes possible.
  • the constant current control unit 130 also controls the discharge current of the battery unit 110 by adjusting the gate voltage applied to the second switch element FET D in accordance with an instruction from the battery control unit 120.
  • the constant current control unit 130 by controlling the maximum value of the drain current of the second switching element FET D adjustments to the charging current of the gate voltage of the second switching element FET D, the battery pack 10 is constant Discharge operation with current is possible.
  • the voltage measurement unit 140 can measure the terminal voltage (V BAT + ⁇ V PACK + ) between the positive electrode side terminal of the battery unit 110 and the external positive electrode terminal 150.
  • the battery control unit 120 can refer to the terminal voltage (V BAT + -V PACK + ) measured by the voltage measurement unit 140.
  • the external positive electrode terminal 150, the external negative electrode terminal 160, and the external communication terminal 170 are terminals used to connect the battery pack 10 to an external electric device (not shown).
  • the external positive electrode terminal 150 is connected to the positive electrode terminal on the electrical device side.
  • the external negative electrode terminal 160 is connected to the negative electrode terminal on the electrical device side.
  • the external communication terminal 170 is connected to the communication terminal on the electrical device side.
  • the battery control unit 120 can obtain an output signal on the electrical device side via the external communication terminal 170.
  • a temperature sensor for example, a thermistor or the like
  • the battery control unit 120 can measure the temperature of the battery unit 110 and the temperature of the internal substrate of the battery pack 10 using a temperature sensor.
  • FIG. 2 is a block diagram conceptually showing the functional configuration of the battery control unit 120 according to the first embodiment.
  • the battery control unit 120 of the present embodiment at least includes an operation control unit 121.
  • the operation control unit 121 controls operations at the time of charging and discharging of the battery pack 10.
  • the operation control unit 121 operates the battery pack 10 in a constant current mode when the operation of the battery pack 10 is started or when the battery pack 10 is maintained.
  • the constant current mode means a mode in which the charge current or discharge current of the battery pack 10 is limited to a certain value.
  • the operation start time of the battery pack 10 means, for example, the timing at which power supply is started to start the electric device connected to the battery pack 10. Further, with the maintenance of the battery pack 10, for example, the battery pack 10 is inspected or repaired such as addition of a new secondary battery 111, replacement of a deteriorated secondary battery 111, addition / replacement of electronic parts such as a capacitor. It means timing.
  • the current flowing inside the battery pack 10 is limited to a fixed value at the start of operation or at the time of maintenance.
  • the start of the operation there is a difference between the terminal voltage of the battery unit 110 and the terminal voltage of the external terminal of the battery pack 10 connected to the external electric device, and rush current may occur.
  • a voltage difference occurs when connecting replacement parts, and rush current It may occur.
  • the battery control unit 120 of the present embodiment further includes an abnormality detection unit 122 and an information storage unit 123.
  • the abnormality detection unit 122 detects an abnormality of the battery pack 10.
  • the abnormality detection unit 122 can determine that an abnormality has occurred in the battery pack 10 when the measured values of the voltage, current, temperature, and the like of the battery pack 10 exceed the normal range.
  • a normal range defined for measured values such as voltage, current, and temperature is stored, for example, in a storage area (not shown) of the battery control unit 120.
  • the information storage unit 123 stores forced stop availability information.
  • the forced stop availability information indicates whether or not the battery pack 10 is forcibly stopped.
  • the operation control unit 121 determines the battery pack 10 based on the forced stop availability information stored in the information storage unit 123. It is determined whether to operate in the current mode or to forcibly stop. Specifically, when the forcible stop possibility information stored in the information storage unit 123 indicates “forcible stop possibility”, the operation control unit 121 forcibly stops the battery pack 10. On the other hand, when the forcible-stoppability information stored in the information storage unit 123 indicates “forced-stop impossible”, the operation control unit 121 operates the battery pack 10 in the constant current mode.
  • the battery pack 10 it is possible to control the operation of the battery pack 10 after the occurrence of an abnormality of the battery pack 10 according to the forcible stop possibility information stored in the information storage unit 123.
  • the information storage unit 123 stores the forcible stop availability information indicating "forced stop impossible"
  • the battery pack 10 is in the constant current mode in which the discharge current is limited. Keep working.
  • the electric devices operating with the power of the battery pack 10 do not stop.
  • the battery pack 10 is forcibly stopped while a drone such as a drone is flying at a relatively high position, the drone may be damaged by a falling impact. According to the above-described configuration, such a problem can be avoided.
  • the battery control unit 120 can be realized, for example, as an embedded microcomputer.
  • the microcomputer includes a processor such as a CPU (Central Processing Unit), a storage area such as a memory and a storage, and the like.
  • the microcomputer is connected to the battery unit 110, the external communication terminal 170, and other circuit components in the battery pack 10 by electrical wiring.
  • Program modules that realize the functions of the operation control unit 121, the abnormality detection unit 122, and the information storage unit 123 are stored in the storage area of the microcomputer.
  • the processor of the microcomputer calls and executes the program module stored in the storage area, and cooperates with the circuit components in the battery pack 10 to realize each of the functions described above.
  • Second Embodiment The present embodiment is the same as the first embodiment except for the points described later.
  • FIG. 3 is a block diagram conceptually showing the functional configuration of the battery control unit 120 according to the second embodiment.
  • the battery control unit 120 of the present embodiment has an event detection unit 124 and an information rewrite unit 125 in addition to the configuration of the first embodiment (example: FIG. 2).
  • the event detection unit 124 detects a rewrite event of the forcible stop availability information stored in the information storage unit 123. Further, the information rewriting unit 125 rewrites the forcible stop possibility information stored in the information storage unit 123 according to the rewriting event detected by the event detection unit 124.
  • the rewrite event of the forced stop availability information can be arbitrarily set according to the electric device connected to the battery pack 10 and operated by the power from the battery pack 10.
  • the electrical device is an unmanned air vehicle such as a drone
  • the event detection unit 124 detects an output signal from the unmanned air vehicle via the external communication terminal 170.
  • the event detection unit 124 can detect an output signal output from the unmanned air vehicle based on remote control by the operator of the unmanned air vehicle.
  • This remote control is an operation for transmitting to the unmanned air vehicle an instruction to set the forcible stop availability information to either "forcible stop possibility" or "forcible stop impossible".
  • This remote control is performed, for example, on a smartphone or tablet PC (Personal Computer) that communicates with the unmanned air vehicle.
  • the event detection unit 124 can detect output signals of various sensors provided in the unmanned air vehicle. For example, the event detection unit 124 can obtain a signal indicating the flight altitude of the unmanned air vehicle from an altitude sensor provided on the unmanned air vehicle.
  • the event detection unit 124 can obtain a signal indicating the flight position of the unmanned air vehicle from a GPS (Global Positioning System) sensor provided on the unmanned air vehicle. Furthermore, as another example, the event detection unit 124 outputs, from the unmanned air vehicle, an indication that the safety device operated normally when the safety device (for example, a parachute etc.) provided to the unmanned air vehicle operates normally. The signal can be detected. The event detection unit 124 detects at least one of the output signals exemplified above.
  • GPS Global Positioning System
  • the information rewriting unit 125 rewrites the forcible stop availability information stored in the information storage unit 123 based on the output signal from the electrical geometry detected by the event detection unit 124.
  • the information storage unit 123 stores forced stop availability information indicating “forced stop impossible”.
  • the event detection unit 124 detects, from the unmanned air vehicle, an output signal indicating that the forced stop availability information is rewritten as “forced stoppable” according to the remote control by the operator of the unmanned air vehicle.
  • the information rewriting unit 125 rewrites the forcible stop possibility information stored in the information storage unit 123 into “forcible stop possible”.
  • the event detection unit 124 detects the output signal of the altitude sensor from the unmanned air vehicle.
  • the information rewriting unit 125 determines whether the altitude of the unmanned air vehicle indicated by the output signal is less than or equal to a predetermined threshold.
  • the predetermined threshold is stored in the storage area of the battery control unit 120 as, for example, a height that causes no problem even if the unmanned air vehicle falls by forcibly stopping the battery pack 10. Then, in accordance with the determination result, the information rewriting unit 125 sets the forced stop availability information stored in the information storage unit 123 to either “forced stop possible” or “forced stop not possible”. As yet another example.
  • the event detection unit 124 acquires an output signal indicating that a safety device such as a parachute has normally operated from the unmanned air vehicle.
  • the information rewriting unit 125 can set the forcible stop possibility information stored in the information storage unit 123 to “forcible stop possible”.
  • the operation control unit 121 controls the battery pack 10 based on the forced stopability information stored in the information storage unit 123. Is operated in constant current mode or forced to stop.
  • the forcible stopability information stored in the information storage unit 123 by the information rewriting unit 125 is It may be rewritten as "forced stoppable". Therefore, the operation control unit 121 of the present embodiment is configured to determine whether to forcibly stop the battery pack 10 based on the forcible stop possibility information after the rewriting.
  • program modules for realizing the functions of the event detection unit 124 and the information rewriting unit 125 are further stored in the storage area of the microcomputer.
  • the processor of the microcomputer calls and executes the program module stored in the storage area, and cooperates with the circuit components in the battery pack 10 to realize each of the functions described above.
  • FIG. 4 is a flowchart illustrating the flow of processing from the start of operation of the battery pack 10.
  • the battery pack 10 receives a start instruction from the electric device via the external communication terminal 170 (S102).
  • the abnormality detection unit 122 refers to the history of the test measurement values such as the current, voltage, and temperature before the activation of the battery pack 10 and the measurement values at the time of the immediately preceding operation in response to the activation instruction from the electrical device. It is determined whether there is an abnormality in the pack (S104).
  • the operation control unit 121 ends the process without activating the battery pack 10. In this case, the operation control unit 121 may notify the electric device side of a signal indicating a start error due to a battery abnormality via the external communication terminal 170.
  • the operation control unit 121 activates the battery pack 10.
  • the operation control unit 121 controls the operation of the battery pack 10 in the constant current mode (S106).
  • the abnormality detection unit 122 appropriately measures the voltage, current, temperature, and the like of the battery pack 10, and monitors whether or not an abnormality occurs in the battery pack 10 (S108).
  • the operation control unit 121 cancels the operation in the constant current mode and operates the battery pack 10 in the normal mode. It is determined whether or not there is a problem. Specifically, operation control unit 121 determines whether or not the difference value between voltage V BAT + of the positive electrode terminal of battery pack 10 and voltage V PACK + of external negative electrode terminal 160 has become equal to or less than a predetermined threshold voltage V th. (S110).
  • the predetermined threshold voltage V th is set to a voltage value that does not generate a current having a magnitude that affects the circuit of the battery pack 10.
  • the predetermined threshold voltage V th is stored, for example, in a storage area of the battery control unit 120.
  • the operation control unit 121 cancels the operation in the constant current mode and controls the operation of the battery pack 10 in the normal mode (S112). Specifically, the operation control unit 121 transmits, to the constant current control unit 130, an instruction to release the current limitation by the gate voltage. The constant current control unit 130 raises the gate voltage according to the instruction. This releases the restriction on the drain current of the first switch element FET C or the second switch element FET D.
  • the abnormality detection unit 122 appropriately measures the voltage, current, temperature, and the like of the battery pack 10 as in the process of S108, and monitors whether or not an abnormality occurs in the battery pack 10 (S114).
  • the operation control unit 121 instructs the operation of the battery pack 10 to stop with the end of the operation of the electric device (operation stop Instruction) It is monitored whether or not it has been received from an electric device connected to the battery pack 10 (S116).
  • the operation control unit 121 stops the operation of the battery pack 10 (S118). Specifically, the operation control unit 121 transmits, to the constant current control unit 130, an instruction to turn off the first switch element FET C and the second switch element FET D. The constant current control unit 130 adjusts the gate voltage of each switch element according to this instruction, and turns off each switch element. Thereby, the operation of the battery pack 10 is stopped.
  • FIG. 5 is a flowchart illustrating the flow of the battery abnormality processing.
  • the operation control unit 121 confirms the forced stopability information stored in the information storage unit 123 (S202).
  • the operation control unit 121 controls the operation of the battery pack in the constant current mode (S204) .
  • the operation control unit 121 controls the operation of the battery pack 10 in the constant current mode until the forcible-stoppability information is rewritten to “impossible”.
  • the process of rewriting the forced stopability information is executed separately from the processes of FIGS. 4 and 5. The process of rewriting the forced stop availability information will be described later.
  • the operation control unit 121 stops the operation of the battery pack 10 (S206).
  • the operation control unit 121 transmits, to the constant current control unit 130, an instruction to turn off the first switch element FET C and the second switch element FET D.
  • the constant current control unit 130 adjusts the gate voltage of each switch element according to this instruction, and turns off each switch element. Thereby, the operation of the battery pack 10 is stopped.
  • FIG. 6 is a flowchart illustrating the flow of the process of rewriting the forced stop availability information.
  • the event detection unit 124 determines whether or not the rewrite event of the forced stop availability information has been detected (S302).
  • the event detection unit 124 can determine, for example, based on an output signal from an electrical device connected to the battery pack 10, whether or not a rewrite event has occurred.
  • the event detection unit 124 can receive an output signal from the electrical device via the external communication terminal 170.
  • the information rewrite unit 125 determines the setting value of the forcible stop possibility information corresponding to the detected rewrite event (S304).
  • the setting value is either a setting value (“possible”) that enables the forced stop of the battery pack 10 or a setting value (“impossible”) that makes the forced stop of the battery pack 10 impossible.
  • the set value for each rewrite event is stored in advance in, for example, a storage area of the battery control unit 120.
  • the information rewriting unit 125 can acquire the setting value of the forcible stopability information corresponding to the rewriting event detected in the process of S302 with reference to the information stored in the storage area.
  • the setting value corresponding to the detected rewrite event is "possible” (S304: “possible")
  • the information rewrite unit 125 rewrites the forced stopability information stored in the information storage unit 123 into "possible”. (S306).
  • the setting value corresponding to the detected rewriting event is "impossible" (S304: “impossible")
  • FIG. 7 is a flowchart illustrating the flow of processing at the time of maintenance of the battery pack 10.
  • the operation control unit 121 determines whether a transition event of the battery pack 10 to the maintenance mode is detected (S402).
  • the operation control unit 121 can detect, for example, removal of the battery pack 10 from the electrical device, removal of an exterior part of the battery pack 10, and the like as a transition event to the maintenance mode.
  • the operation control unit 121 can detect that the battery pack 10 has been removed from the electrical device from the conduction state of the external positive electrode terminal 150, the external negative electrode terminal 160, or the external communication terminal 170.
  • the operation control unit 121 indicates, for example, that a button provided on the exterior part has been removed (for example, “during installation” when the button is pressed) that the exterior part of the battery pack 10 has been removed. When the button is not pressed, it can be determined based on "during removal” and the like.
  • the operation control unit 121 controls the operation of the battery pack 10 in the constant current mode (S404).
  • operation control unit 121 sets the difference between voltage V BAT + of the positive terminal of battery pack 10 and voltage V PACK + of external positive terminal 150 to a predetermined value. It may be monitored whether or not the threshold value V Th of the threshold value is less than or equal to the threshold value V Th .
  • the operation control unit 121 when the difference between the positive terminal of the voltage V BAT + and an external positive terminal 150 of the voltage V PACK + of the battery pack 10 is equal to or less than a predetermined threshold value V Th, the operation in the constant current mode You may cancel it.
  • the first switch element FETC, the first resistor RC, the second switch element FETD, and the second resistor RD are not limited to the configurations of the respective drawings used in the description of the respective embodiments. It may be
  • Operation control means for controlling the operation during charging and discharging of the battery pack including the secondary battery
  • the operation control unit operates the battery pack in a constant current mode at the start of operation of the battery pack or at the time of maintenance of the battery pack.
  • Battery control unit 2.
  • the operation control means when operating the battery pack in a constant current mode, a voltage of an external connection terminal of the battery pack connected to a device operated by power from the battery pack, and the secondary battery Release the constant current mode when the difference between the open circuit voltage of 1.
  • the battery control device as described in. 3.
  • Abnormality detection means for detecting an abnormality of the battery pack; An information storage unit that stores forced stop availability information indicating whether the battery pack is forcibly stopped; Operation control means for controlling the operation at the time of charge and discharge of the battery pack; The operation control means is When the abnormality detection unit detects an abnormality in the battery pack, it is determined whether the battery pack is operated in a constant current mode or forcibly stopped based on the forced stopability information stored in the information storage unit. decide, Battery control unit. 4.
  • An event detection unit that detects a rewrite event of the forced stop availability information; Information rewriting means for rewriting the forced stopability information stored in the information storage means according to the rewriting event detected by the event detection means;
  • the operation control means rewrites the forced stopability information stored in the information storage means by the information rewriting means after the abnormality detection means detects an abnormality in the battery pack. It is determined whether to forcibly stop the battery pack, based on the later forced-stoppability information. 3.
  • the battery control device as described in. 5.
  • the event detection means detects an output signal from a device operated by the power from the battery pack,
  • the information rewriting unit rewrites the forced stop availability information stored in the information storage unit based on the output from the device detected by the event detection unit. 4.
  • the device is a drone. 5.
  • the event detection means normally operates an output signal based on a remote control by the unmanned aerial vehicle operator, an output signal of a sensor provided on the unmanned aerial vehicle, and a safety device provided on the unmanned aerial vehicle. Detect at least one of the output signals indicating that 6.
  • the computer is A battery control method comprising operating the battery pack in a constant current mode at the start of operation of a battery pack including a secondary battery or at the time of maintenance of the battery pack. 10.
  • the computer When the computer is operating the battery pack in a constant current mode, the voltage of the external connection terminal of the battery pack connected with the device operated by the power from the battery pack, and the release of the secondary battery The constant current mode is canceled when the difference from the voltage becomes lower than the reference, 9. further including The battery control method described in. 11.
  • the computer is When abnormality of the battery pack is detected, the battery pack is operated in the constant current mode or forcibly stopped based on the forcible stopability information indicating whether the forcible stop of the battery pack is stored, which is stored in the information storage means. To decide Battery control method including. 12.
  • the computer Detecting a rewrite event of the forced stop availability information; Rewriting the forced stopability information stored in the information storage means in accordance with the detected rewrite event.
  • the battery pack is forced based on the forcible stopability information after the rewriting. Decide whether to stop or not 11. further including The battery control method described in. 13. The computer Detecting an output signal from a device operated by the power from the battery pack; The forced stop availability information stored in the information storage unit is rewritten based on the detected output from the device. Further including 12. The battery control method described in. 14. The device is a drone. 13. The battery control method described in. 15.
  • the computer An output signal based on remote control by the pilot of the unmanned aerial vehicle, an output signal of a sensor provided on the unmanned aerial vehicle, and an output signal indicating that a safety device provided on the unmanned aerial vehicle has operated normally. Detect at least one of Further including 14.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Protection Of Static Devices (AREA)

Abstract

La présente invention concerne une unité de commande de batterie (120) qui est pourvue d'une unité de commande de fonctionnement qui commande le fonctionnement d'un bloc-batterie (10) comprenant une batterie rechargeable (111) pendant la charge et la décharge. L'unité de commande de fonctionnement, au début du fonctionnement du bloc-batterie (10) ou pendant la maintenance du bloc-batterie (10), amène le bloc-batterie (10) à fonctionner dans un mode à courant constant. L'unité de commande de batterie (120) peut en outre être pourvu d'une unité de détection d'anomalie pour détecter une anomalie dans le bloc-batterie (10), et une unité de stockage d'informations pour stocker des informations d'opportunité d'arrêt obligatoire indiquant l'opportunité de l'arrêt obligatoire du bloc-batterie (10). Dans ce cas, l'unité de commande de fonctionnement, si une anomalie dans le bloc-batterie (10) a été détectée par l'unité de détection d'anomalie, détermine si le bloc-batterie (10) doit être autorisé à fonctionner dans le mode à courant constant ou être amené à être arrêté obligatoirement sur la base des informations d'opportunité d'arrêt obligatoire stockées dans l'unité de stockage d'informations.
PCT/JP2019/001443 2018-01-26 2019-01-18 Dispositif de commande de batterie, bloc-batterie, procédé de commande de batterie et programme WO2019146520A1 (fr)

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JP2008134060A (ja) * 2006-11-27 2008-06-12 Matsushita Electric Ind Co Ltd 蓄電装置の異常検出装置、蓄電装置の異常検出方法及びその異常検出プログラム
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