WO2017183395A1 - Bloc-batterie - Google Patents

Bloc-batterie Download PDF

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Publication number
WO2017183395A1
WO2017183395A1 PCT/JP2017/012332 JP2017012332W WO2017183395A1 WO 2017183395 A1 WO2017183395 A1 WO 2017183395A1 JP 2017012332 W JP2017012332 W JP 2017012332W WO 2017183395 A1 WO2017183395 A1 WO 2017183395A1
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WO
WIPO (PCT)
Prior art keywords
battery
battery module
voltage
normal
returned
Prior art date
Application number
PCT/JP2017/012332
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English (en)
Japanese (ja)
Inventor
真一 会沢
隆広 都竹
順一 波多野
隆介 長谷
Original Assignee
株式会社豊田自動織機
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 株式会社豊田自動織機 filed Critical 株式会社豊田自動織機
Priority to JP2018513085A priority Critical patent/JP6485595B2/ja
Publication of WO2017183395A1 publication Critical patent/WO2017183395A1/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
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • 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 pack.
  • a plurality of battery modules connected in parallel to each other are provided, and when one battery module of the plurality of battery modules becomes abnormal, the abnormal battery module is electrically connected to other battery modules. In some cases, the power supply to the load is continued using only other battery modules.
  • the reflux current flowing between the battery modules also increases as the voltage difference increases. Therefore, when a battery module that has become abnormal returns to normal and the battery module that has returned to normal is reconnected to another battery module, it supports the voltage difference between the battery module that has returned to normal and the other battery module. If the reflux current to be generated is larger than the rated current of each component such as a battery, a switch, and an electric wire constituting the battery module, the components may be deteriorated or break down due to the reflux current.
  • the voltage of the battery that the battery module has returned to normal and the voltage of the battery that the other battery module has are reconnected to other battery modules when the voltages become substantially the same.
  • the battery voltage of the other battery module is lowered by discharging the battery of the other battery module to reduce the voltage of the battery of the other battery module, and the battery voltage of the other battery module and the voltage of the battery of the other battery module are returned. It is conceivable that the voltages are substantially the same.
  • Patent Document 1 is a related technique.
  • the battery pack When the battery is being charged, the battery of the other battery module cannot be discharged, so the battery voltage of the battery module that has returned to normal and the voltage of the battery of the other battery module are set to substantially the same voltage.
  • the battery module that has returned to normal while suppressing the reflux current cannot be reconnected to another battery module.
  • an object according to one aspect of the present invention is to increase the chances of reconnecting a battery module that has returned to normal while suppressing a reflux current in a battery pack including a plurality of battery modules connected in parallel to each other. It is to plan.
  • a battery pack according to one embodiment of the present invention includes a plurality of battery modules and a control unit.
  • the plurality of battery modules each have a battery and a switch connected in series, and are connected in parallel to each other.
  • the control unit disconnects the abnormal battery module from the other battery modules by turning off the switch of the abnormal battery module among the plurality of battery modules.
  • control unit returns the battery module that has returned to normal to the normal state, reconnects the battery module that has returned to normal to another battery module, and the battery voltage of the battery module that has returned to normal is
  • the voltage of the battery included in the other battery module becomes a predetermined voltage by charging the battery included in the other battery module.
  • the battery voltage of the battery module that has returned to normal and the other battery modules are charged by turning on the switch of the battery module that has returned to normal and then charging the battery that the battery module that has returned to normal returns.
  • Other battery modules have a voltage difference from the battery voltage of Switch turns on the in to connect the battery module and another battery module has returned to normal.
  • a battery pack including a plurality of battery modules connected in parallel to each other, it is possible to increase the chances of reconnecting a battery module that has returned to normal while suppressing the reflux current to another battery module.
  • FIG. 1 is a diagram illustrating an example of the battery pack according to the embodiment.
  • the battery pack 1 shown in FIG. 1 includes a plurality of battery modules 2 and a control unit 3 that are connected in parallel to each other.
  • the control unit 3 is configured by, for example, a CPU (Central Processing Unit) or a programmable device.
  • the battery pack 1 is mounted on a vehicle such as an electric forklift or a hybrid car, for example, and supplies power to the load Lo when a load Lo such as an inverter that drives a traveling motor is connected.
  • the battery pack 1 is supplied with power from the load Lo or the charger Ch when the load Lo or the charger Ch is connected.
  • Each battery module 2 includes a battery B, a switch SW, a current detection unit 21, a temperature detection unit 22, and a monitoring unit 23, respectively.
  • Battery B is composed of a plurality of batteries connected in series (for example, a lithium ion battery, a nickel metal hydride battery, or an electric double layer capacitor). Note that the battery B may be configured by one battery.
  • the switch SW is composed of a semiconductor relay or an electromagnetic relay such as a MOSFET (Metal Oxide Semiconductor Semiconductor Field Effect Transistor), and is connected to the battery B in series.
  • MOSFET Metal Oxide Semiconductor Semiconductor Field Effect Transistor
  • the current detector 21 is constituted by, for example, a Hall element or a shunt resistor, and detects a current flowing through the battery B or the switch SW.
  • the temperature detection part 22 is comprised by the thermistor, for example, and detects the ambient temperature of the battery B.
  • the monitoring unit 23 is configured by, for example, a CPU or a programmable device, and detects the voltage of the battery B. In addition, the monitoring unit 23 controls on / off of the switch SW according to an instruction sent from the control unit 3. In addition, the monitoring unit 23 sends battery state information indicating the voltage of the battery B, the current detected by the current detection unit 21, and the temperature detected by the temperature detection unit 22 to the control unit 3.
  • the control unit 3 determines that the battery module 2 that is the source of the battery state information is abnormal when at least one of the voltage, current, and temperature indicated in the battery state information is greater than or equal to the threshold value. In addition, when the voltage, current, and temperature indicated in the battery state information are all smaller than the threshold value, the control unit 3 determines that the battery module 2 that is the source of the battery state information is normal. The control unit 3 electrically disconnects the battery module 2 from the other battery modules 2 by turning off the switch SW of the battery module 2 that has become abnormal.
  • the control unit 3 charges the battery B by performing constant current constant voltage charge control. That is, as shown in FIG. 2A and FIG. 2B, the control unit 3 includes the current detection unit 21 from the start of charging until the voltage V detected by the monitoring unit 23 rises to the predetermined voltage Vf.
  • the battery B is charged by performing constant current charging control that sends a current command value to the charger Ch so that the current I detected by the monitoring unit 23 is maintained at a predetermined current, and the voltage V detected by the monitoring unit 23 is predetermined.
  • the voltage V detected by the monitoring unit 23 is a predetermined voltage until the current I detected by the current detection unit 21 decreases to the end current If corresponding to the target charge amount of the battery B after rising to the voltage Vf.
  • the battery B is charged by performing constant voltage charging control for sending a current command value to the charger Ch so as to be kept at Vf.
  • Vf the predetermined voltage
  • the end current If may be widened in consideration of variations in the full charge capacity of the battery B and the like.
  • the control unit 3 returns the normal battery module 2 to the normal state, reconnects the normal battery module 2 to another battery module 2, and the normal battery module 2 returns to the normal state.
  • the voltage Vo of the battery B of the other battery module 2 is charged by charging the battery B of the other battery module 2.
  • the switch SW of the battery module 2 that has returned to normal is turned on, and the battery module 2 that has returned to normal and the other battery module 2 Connect.
  • the voltage Vo is an average voltage of the voltages of the batteries B included in the battery modules 2 when there are a plurality of other battery modules 2.
  • control unit 3 returns the normal battery module 2 to the normal state, reconnects the normal battery module 2 to another battery module 2, and the normal battery module 2 returns to the normal state.
  • the voltage Vo of the battery B included in the other battery module 2 is charged by charging the battery B included in the other battery module 2.
  • the switch SW of the other battery module 2 is turned off, the switch SW of the battery module 2 that has returned to normal is turned on, and then the battery that the battery module 2 that has returned to normal has.
  • the voltage Vr of the battery B of the battery module 2 returned to normal by charging B becomes the predetermined voltage Vf
  • another battery Joule 2 turns on the switch SW is connected to the battery module 2 and the other battery module 2 back to normal with.
  • control unit 3 returns the normal battery module 2 to the normal state, reconnects the normal battery module 2 to another battery module 2, and the normal battery module 2 returns to the normal state.
  • the voltage Vr of the battery B that the battery module 2 has is the same as the voltage Vo of the battery B that the other battery module 2 has
  • the switch SW of the battery module 2 that has returned to normal is turned on, The battery B included and the battery B included in the other battery module 2 are charged.
  • FIG. 3 is a flowchart showing an example of the operation of the control unit 3. It is assumed that the switches SW included in all the battery modules 2 are turned on. Moreover, the voltage of the battery B which all the battery modules 2 have shall be lower than the predetermined voltage Vf.
  • the control unit 3 maintains the current state, and at least one battery module 2 among all the battery modules 2 is If it is determined that an abnormality has occurred (S301: Yes), the battery module 2 that has become abnormal by turning off the switch SW of the battery module 2 that has become abnormal is electrically disconnected from the other battery modules 2 (S302). .
  • the controller 3 determines that the abnormal battery module 2 has not yet returned to normal (S303: No)
  • the current state is maintained, and the abnormal battery module 2 is
  • the voltage Vr of the battery B included in the battery module 2 returned to normal is determined to be greater than the voltage Vo of the battery B included in the other battery modules 2 (S304: Yes).
  • the voltage Vo is increased by charging the battery B of the other battery module 2 by performing constant current charging control.
  • the switch SW of the battery module 2 that has returned to normal is off, and the battery B of the battery module 2 that has returned to normal is not charged by the constant current charge control, so the voltage Vr does not increase.
  • the control unit 3 maintains the current state and determines that the voltage Vo has increased to the voltage Vr (S306). : Yes), the switch SW of the battery module 2 that has returned to normal is turned on to connect the battery module 2 that has returned to normal and the other battery module 2 (S307). At this time, since the voltage Vr and the voltage Vo are substantially the same, the battery module 2 that has returned to normal while suppressing the reflux current can be reconnected to another battery module 2.
  • the control unit 3 determines that the voltages Vr and Vo have not increased to the predetermined voltage Vf (S308: No)
  • the current state is maintained, and the voltages Vr and Vo increase to the predetermined voltage Vf.
  • the battery B of the battery module 2 and the battery B of the other battery module 2 are charged. (S309).
  • the predetermined voltage Vf is the same as the constant voltage in the constant voltage charge control, but it does not have to be exactly the same.
  • control unit 3 determines that the battery module 2 that has become abnormal has returned to normal (S303: Yes) and determines that the voltage Vr is smaller than the voltage Vo (S304: No, S310: Yes)
  • the constant current By performing the charge control, the voltage Vo is increased by charging the battery B of the other battery module 2 (S311).
  • the switch SW of the battery module 2 that has returned to normal is off, and the battery B of the battery module 2 that has returned to normal is not charged by the constant current charge control, so the voltage Vr does not increase.
  • the control unit 3 maintains the current state and determines that the voltage Vo has increased to the predetermined voltage Vf. (S312: Yes), the switch SW of the other battery module 2 is turned off, and the switch SW of the battery module 2 returned to normal is turned on (S313). Then, the battery B included in the battery module 2 that has returned to normal by the constant current charge control is charged, and the voltage Vr increases. At this time, the switch SW included in the other battery module 2 is off, and the battery B included in the other battery module 2 is not charged, so the voltage Vo does not increase.
  • the control unit 3 maintains the current state and determines that the voltage Vr has increased to the predetermined voltage Vf. (S314: Yes), the constant current charging control is terminated, and the switch SW included in the other battery module 2 is turned on to connect the battery module 2 that has returned to normal and the other battery module 2 (S315).
  • the voltage Vr is the predetermined voltage Vf
  • the voltage Vo is the predetermined voltage Vf
  • the voltage Vr and the voltage Vo are substantially the same, the battery module 2 that has returned to normal while suppressing the return current is replaced with another battery.
  • the module 2 can be reconnected.
  • control unit 3 reconnects the battery module 2 that has returned to normal in S315 to the other battery module 2, and then performs the constant voltage charging control so that the battery B included in the battery module 2 that has returned to normal and The battery B included in the other battery module 2 is charged (S309).
  • the control unit 3 determines that the battery module 2 that has become abnormal has returned to normal (S303: Yes), and determines that the voltage Vr is the same as the voltage Vo (S304: No, S310: No).
  • the switch SW of the battery module 2 that has returned to is turned on (S316). At this time, since the voltage Vr and the voltage Vo are substantially the same, the battery module 2 that has returned to normal while suppressing the reflux current can be reconnected to another battery module 2.
  • control part 3 charges the battery B which the battery module 2 which returned to normal by performing constant current constant voltage charge control, and the battery B which the other battery module 2 has (S317).
  • FIG. 4 is a flowchart showing another example of the operation of the control unit 3. It is assumed that the switches SW included in all the battery modules 2 are turned on. Moreover, the voltage of the battery B which all the battery modules 2 have shall be lower than the predetermined voltage Vf. Further, S401 to 409 shown in FIG. 4 are the same as S301 to S309 shown in FIG.
  • the control unit 3 determines that the battery module 2 that has become abnormal has returned to normal (S403: Yes), and the voltage Vr of the battery B of the battery module 2 that has returned to normal is that of the battery B of the other battery module 2. If it is determined that the voltage is smaller than the voltage Vo (S404: No, S410: Yes), the voltage Vo is reduced to the predetermined voltage Vf by charging the battery B included in the other battery module 2 by performing constant current constant voltage charging control. After the increase, the current Io flowing through the battery B of the other battery module 2 is decreased (S411). At this time, the switch SW of the battery module 2 that has returned to normal is off, and the battery B of the battery module 2 that has returned to normal is not charged by the constant-current / constant-voltage charge control, so the voltage Vr does not increase.
  • the control unit 3 maintains the current state and determines that the current Io has decreased to the end current If. (S412: Yes), the switch SW of the other battery module 2 is turned off, and the switch SW of the battery module 2 returned to normal is turned on (S413).
  • the control unit 3 increases the voltage Ir to the predetermined voltage Vf by charging the battery B included in the battery module 2 that has returned to normal by performing constant current / constant voltage charging control, and then the current Ir. Decrease (S414).
  • the switch SW included in the other battery module 2 is off, and the battery B included in the other battery module 2 is not charged by the constant current / constant voltage charging control, so the voltage Vo does not increase.
  • the control unit 3 maintains the current state and determines that the current Ir has decreased to the end current If. (S415: Yes)
  • the battery module 2 that has returned to normal and the other battery module 2 are connected (S416).
  • the voltage Vr is the predetermined voltage Vf
  • the voltage Vo is the predetermined voltage Vf
  • the voltage Vr and the voltage Vo are substantially the same, the battery module 2 that has returned to normal while suppressing the return current is replaced with another battery.
  • the module 2 can be reconnected.
  • the control unit 3 determines that the battery module 2 that has become abnormal has returned to normal (S403: Yes), and determines that the voltage Vr is the same as the voltage Vo (S404: No, S410: No).
  • the switch SW of the battery module 2 that has returned to is turned on (S417). At this time, since the voltage Vr and the voltage Vo are substantially the same, the battery module 2 that has returned to normal while suppressing the reflux current can be reconnected to another battery module 2.
  • control part 3 charges the battery B which the battery module 2 which returned to normal by performing constant current constant voltage charge control, and the battery B which the other battery module 2 has (S418).
  • control unit 3 that performs the operation shown in FIG. 3 is configured to reconnect the battery module 2 that has returned to normal to the other battery module 2, and the voltage Vr of the battery B included in the battery module 2 that has returned to normal. Is lower than the voltage Vo of the battery B of the other battery module 2, when charging the battery B of the other battery module 2, the battery module 2 has returned to normal by performing constant current charge control.
  • constant current charging control is performed, and after the battery module 2 that has returned to normal is reconnected to another battery module 2, the battery B and the other battery module 2 that the battery module 2 that has returned to normal returns When charging the battery B included in the battery, constant voltage charging control is performed.
  • control unit 3 that performs the operation shown in FIG. 4 is configured to reconnect the battery module 2 that has returned to normal to the other battery module 2, and the voltage Vr of the battery B included in the battery module 2 that has returned to normal. Is smaller than the voltage Vo of the battery B included in the other battery module 2, when charging the battery B included in the other battery module 2, the battery module 2 that has returned to normal is controlled by performing constant current / constant voltage charging control. When the battery B is charged, constant current constant voltage charge control is performed.
  • the other battery module 2 when the battery module 2 that has returned to normal is reconnected to the other battery module 2 and when the voltage Vr is smaller than the voltage Vo, the other battery module 2
  • the voltage Vo is set to the predetermined voltage Vf by charging the battery B
  • the voltage Vr is set to the predetermined voltage Vf by charging the battery B included in the battery module 2 that has returned to normal.
  • the voltages Vr and Vo can be obtained even when the battery pack 1 is being charged.
  • Can be set to the predetermined voltage Vf, and the voltage Vr and the voltage Vo can be set to substantially the same voltage.
  • the battery module 2 that has returned to normal can be reconnected to another battery module 2 while suppressing the reflux current. That is, according to the battery pack 1 of the embodiment, it is possible to increase the chances of reconnecting the battery module 2 that has returned to normal while suppressing the reflux current to another battery module 2.
  • the battery module 2 that has returned to normal when the battery module 2 that has returned to normal is reconnected to another battery module 2 and when the voltage Vr is smaller than the voltage Vo, the battery module 2 that has returned to normal. It is also conceivable to increase the voltage Vo to the predetermined voltage Vf by charging the battery B included in another battery module 2 after the voltage Vr is increased to the predetermined voltage Vf by charging the battery B included in the In the case of such a configuration, and when the number of battery modules 2 that have returned to normal is smaller than the number of other battery modules 2, if the charging of the battery pack 1 is terminated halfway, the entire battery pack 1 is charged. Since the charging of the battery pack 1 is completed while the amount does not increase so much, the increase in the amount of charging of the battery pack 1 is not accompanied by the charging time. There is a risk that sensitive user will remember.
  • the battery pack 1 of the embodiment when the battery module 2 that has returned to normal is reconnected to the other battery module 2 and when the voltage Vr is smaller than the voltage Vo, the battery that the other battery module 2 has After charging the voltage Vo to the predetermined voltage Vf by charging B, the voltage Vr is set to the predetermined voltage Vf by charging the battery B included in the battery module 2 that has returned to normal.
  • the charge amount of the battery pack 1 can be increased sufficiently even if the charge of the battery pack 1 is terminated halfway. It is possible to prevent the user from feeling a sense of discomfort, such as the amount of increase not accompanying the charging time.
  • 5 and 6 are flowcharts showing a modification of the operation of the control unit 3 shown in FIG. It is assumed that the switches SW included in all the battery modules 2 are turned on. Moreover, the voltage of the battery B which all the battery modules 2 have shall be lower than the predetermined voltage Vf. Further, S501 to 509 shown in FIG. 5 are the same as S301 to S309 shown in FIG. Further, S517 to S518 shown in FIG. 5 are the same as S316 to S317 shown in FIG.
  • the control unit 3 determines that the battery module 2 that has become abnormal has returned to normal (S503: Yes), and the voltage Vr of the battery B included in the battery module 2 that has returned to normal is the other battery.
  • the threshold value Vth is, for example, the voltage of the battery B immediately before overdischarge.
  • the switch SW included in the other battery module 2 is turned off and returned to normal.
  • the switch SW included in the battery module 2 is turned on (S519), and the voltage Vr is increased by charging the battery B included in the battery module 2 that has returned to normal by performing constant current charge control (S520).
  • the switch SW included in the other battery module 2 is turned off, and the battery B included in the other battery module 2 is not charged by the constant current charging control. Therefore, the voltage Vo does not increase.
  • the control unit 3 determines that the voltage Vr is not the same or substantially the same as the voltage Vo (S521: No), the current state is maintained, and the voltage Vr is the same or substantially the same as the voltage Vo. If it is determined that they are the same (S521: Yes), the switch SW of the other battery module 2 is turned on to connect the battery module 2 that has returned to normal and the other battery module 2 (S522). At this time, since the voltage Vr and the voltage Vo are the same or substantially the same, the battery module 2 that has returned to normal while suppressing the return current can be reconnected to another battery module 2.
  • the control unit 3 charges the battery B of the battery module 2 that has returned to normal by performing constant voltage charging control and the battery B of the other battery module 2 (S509). .
  • the control unit 3 that performs the operations shown in FIGS. 5 and 6 returns the normal battery module 2 to the normal state, and reconnects the normal battery module 2 to the other battery module 2.
  • the voltage Vr of the battery B included in the battery module 2 that has returned to normal is smaller than the voltage Vo of the battery B included in the other battery module 2
  • the voltage Vr is equal to or less than the threshold value Vth
  • another battery Battery module 2 returned to normal by turning off switch SW included in module 2 and turning on switch SW included in battery module 2 returned to normal to charge battery B included in battery module 2 returned to normal
  • the voltage Vr of the battery B included in the battery B is the same as or substantially the same as the voltage Vo of the battery B included in the other battery module 2
  • the other battery module To connect the battery module 2 and the other battery module 2 back to normal by turning on the switch SW included in the.
  • the battery B included in the battery module 2 returned to normal when the voltage Vr of the battery B included in the battery module 2 returned to normal is equal to or lower than the threshold Vth, the battery B included in the battery module 2 returned to normal earlier than the battery B included in the other battery module 2 is present. Since the battery B of the battery module 2 that has returned to normal is in an over-discharged state, the battery B 1 that has been over-discharged remains uncharged even if the charging of the battery pack 1 is terminated halfway. It can suppress that it is left and it becomes an overdischarge.
  • the control unit 3 that performs the operation shown in FIG. 7 returns the normal battery module 2 to the normal state and reconnects the normal battery module 2 to the other battery module 2 and is normal.
  • the voltage Vr of the battery B included in the battery module 2 that has returned to is smaller than the voltage Vo of the battery B included in the other battery module 2
  • the other battery module 2 is charged by charging the battery B included in the other battery module 2.
  • the switch SW included in the other battery module 2 is turned off, the switch SW included in the battery module 2 returned to normal is turned on, and then returned to normal.
  • control unit 3 that performs the operation shown in FIG. 7 charges the battery B included in the other battery module 2
  • the control unit 3 performs constant current charging control and charges the battery B included in the battery module 2 that has returned to normal. After performing the constant current charging control and reconnecting the battery module 2 that has returned to normal to the other battery module 2, the battery B that the battery module 2 that has returned to normal and the battery B that the other battery module 2 has have When charging, constant voltage charge control is performed after performing constant current charge control.
  • the predetermined value ⁇ Vth may be zero, or may be a value other than zero in consideration of variations in voltage detection accuracy of the monitoring unit 23.
  • the battery module 2 that has returned to normal is turned on by turning on the switch SW of the other battery module 2.
  • the operation of the control unit 3 “connects the battery module 2 to another battery module 2 (S516)” is determined as “the voltage difference ⁇ V between the voltage Vr and the voltage Vo is equal to or less than a predetermined value ⁇ Vth, as shown in FIG. (S515 ′: Yes)
  • the switch SW of the other battery module 2 by turning on the switch SW of the other battery module 2, the battery module 2 returned to normal and the other battery module 2 are connected (S516) ”. It is also possible to replace it.
  • the control unit 3 that performs the operation shown in FIG. 8 returns the normal battery module 2 to a normal state and reconnects the normal battery module 2 to another battery module 2 and is normal.
  • the voltage Vr of the battery B included in the battery module 2 that has returned to is smaller than the voltage Vo of the battery B included in the other battery module 2
  • the voltage Vr of the battery B included in the battery module 2 that has returned to normal is the threshold value.
  • the battery B of the other battery module 2 is charged to charge the voltage Vo of the battery B of the other battery module 2 to the predetermined voltage Vf, and then the switch SW of the other battery module 2 has.
  • the switch SW of the battery module 2 that has returned to normal is turned on, and then the battery module 2 that has returned to normal has the power After the voltage difference ⁇ V between the voltage Vr of the battery B included in the battery module 2 returned to normal by charging B and the voltage Vo of the battery B included in the other battery module 2 becomes equal to or lower than the predetermined value ⁇ Vth, The switch SW of the battery module 2 is turned on to connect the battery module 2 that has returned to normal and the other battery module 2.

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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

Selon la présente invention, lorsqu'un module de batterie 2 qui est retourné à la normale doit être reconnecté à un autre module de batterie 2, et la tension Vr d'une batterie B dans le module de batterie 2 qui est retourné à la normale est inférieure à la tension Vo d'une batterie B de l'autre module de batterie 2, le module de batterie 2 qui est retourné à la normale est reconnecté à l'autre module de batterie 2 une fois que la tension Vo de la batterie B de l'autre module de batterie 2 a atteint une tension prédéterminée Vf et la différence de tension ΔV entre la tension Vr de la batterie B du module de batterie 2 qui est retourné à la normale et la tension de la batterie B de l'autre module de batterie 2 a atteint ou diminue au-dessous d'une valeur prédéterminée ΔVth.
PCT/JP2017/012332 2016-04-21 2017-03-27 Bloc-batterie WO2017183395A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018513085A JP6485595B2 (ja) 2016-04-21 2017-03-27 電池パック

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016085032 2016-04-21
JP2016-085032 2016-04-21

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Publication Number Publication Date
WO2017183395A1 true WO2017183395A1 (fr) 2017-10-26

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JP7504613B2 (ja) 2020-02-14 2024-06-24 新コスモス電機株式会社 充電システムおよび充電器

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JPH09215214A (ja) * 1996-01-31 1997-08-15 Toshiba Corp ポータブル電子機器及び充電制御方法
JP2009033936A (ja) * 2007-07-30 2009-02-12 Toshiba Corp 並列接続蓄電システム
WO2010103816A1 (fr) * 2009-03-13 2010-09-16 パナソニック株式会社 Circuit de commande de charge/décharge, dispositif d'alimentation et procédé de commande d'un dispositif d'alimentation
JP2016073021A (ja) * 2014-09-26 2016-05-09 株式会社日立情報通信エンジニアリング 蓄電システム及び蓄電システムのプリチャージ方法

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JPH09215214A (ja) * 1996-01-31 1997-08-15 Toshiba Corp ポータブル電子機器及び充電制御方法
JP2009033936A (ja) * 2007-07-30 2009-02-12 Toshiba Corp 並列接続蓄電システム
WO2010103816A1 (fr) * 2009-03-13 2010-09-16 パナソニック株式会社 Circuit de commande de charge/décharge, dispositif d'alimentation et procédé de commande d'un dispositif d'alimentation
JP2016073021A (ja) * 2014-09-26 2016-05-09 株式会社日立情報通信エンジニアリング 蓄電システム及び蓄電システムのプリチャージ方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7504613B2 (ja) 2020-02-14 2024-06-24 新コスモス電機株式会社 充電システムおよび充電器

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