WO2022061517A1 - Procédé et circuit de détection de batterie, batterie et support - Google Patents

Procédé et circuit de détection de batterie, batterie et support Download PDF

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Publication number
WO2022061517A1
WO2022061517A1 PCT/CN2020/116838 CN2020116838W WO2022061517A1 WO 2022061517 A1 WO2022061517 A1 WO 2022061517A1 CN 2020116838 W CN2020116838 W CN 2020116838W WO 2022061517 A1 WO2022061517 A1 WO 2022061517A1
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WO
WIPO (PCT)
Prior art keywords
battery
discharge
circuit
control
coupled
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Application number
PCT/CN2020/116838
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English (en)
Chinese (zh)
Inventor
潘启辉
肖想民
阳林华
答盼
程允辉
Original Assignee
海能达通信股份有限公司
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Priority to PCT/CN2020/116838 priority Critical patent/WO2022061517A1/fr
Publication of WO2022061517A1 publication Critical patent/WO2022061517A1/fr

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    • 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

Definitions

  • the present application relates to the technical field of battery protection, in particular to a battery protection circuit, a battery protection method, a battery and a computer storage medium.
  • a dedicated battery management circuit is designed inside the independently packaged rechargeable battery, and these management circuits need to consume battery power when working.
  • the present application mainly provides a battery protection circuit, a method, a battery and a medium to solve the technical problem of over-discharge of battery cells during battery storage in the related art.
  • a technical solution adopted in the present application is to provide a protection circuit for a battery.
  • the protection circuit of the battery is coupled to the battery cell, and the protection circuit includes: a charging switch device, the drain of which is coupled to the positive electrode of the battery cell; a discharge switching device, whose drain is coupled to the source of the charging switch device; detection The circuit is coupled to the positive electrode of the cell, the gate of the charging switch device and the gate of the discharge switch device; the control circuit is coupled to the detection circuit and the source of the discharge switch device; wherein, the detection circuit detects that the power parameter of the cell is low When the threshold value is reached, the discharge switch device is controlled to be turned off, so that the control circuit is in a power-off state; or when the control circuit determines that the disconnection time between the battery and the load exceeds the preset time, the discharge switch device is controlled to be turned off, so that the control circuit is in a state of power off. Power off state.
  • a technical solution adopted in the present application is to provide a battery protection method.
  • the method includes: in response to detecting that the electric quantity parameter of the battery cell is lower than a threshold, or in response to judging that the disconnection time between the battery and the load exceeds a preset time, controlling the discharge switching device to turn off to disconnect the power supply input of the control circuit.
  • the battery includes a battery cell and the above-mentioned battery protection circuit.
  • a technical solution adopted in the present application is to provide a computer storage medium.
  • the computer storage medium stores a computer program, and the computer program is executed to realize the steps of the above-mentioned battery protection method.
  • the detection circuit of the present application is coupled to the positive electrode of the cell, the charging switch device and the discharge switch device, the control circuit is coupled to the source of the discharge switch device, and the detection circuit detects the When the power parameter is lower than the threshold value, or when the control circuit judges that the disconnection time between the cell and the load exceeds the preset time, the detection circuit controls the discharge switch device to turn off, so that the control circuit is disconnected from the cell and is in a power-off state, thereby Reducing the power consumption of the detection circuit and the control circuit in the state of no charge and discharge can reduce the risk of over-discharge during the battery storage process, improve the storage time of the battery, and prolong the service life of the battery.
  • FIG. 1 is a schematic structural diagram of an embodiment of a battery protection circuit provided by the present application.
  • FIG. 2 is a schematic flowchart of a first embodiment of a battery protection method provided by the present application
  • FIG. 3 is a schematic flowchart of a second embodiment of a battery protection method provided by the present application.
  • FIG. 4 is a schematic structural diagram of an embodiment of a computer storage medium provided by the present application.
  • first”, “second” and “third” in the embodiments of the present application are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as “first”, “second”, “third” may expressly or implicitly include at least one of that feature.
  • "a plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
  • the terms “comprising” and “having” and any variations thereof are intended to cover non-exclusive inclusion.
  • a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.
  • FIG. 1 is a schematic structural diagram of an embodiment of a battery protection circuit provided by the present application.
  • the battery 10 may include a battery cell 11 and a protection circuit 12 .
  • the battery cell 11 is the power storage part of the battery 10 , including a positive electrode and a negative electrode.
  • the number of the cells 11 in the schematic diagram is only illustrative, and the specific number is subject to the actual situation, which is not limited in this application.
  • the protection circuit 12 includes a charging switching device Qc, a discharging switching device Qd, a detection circuit 121 and a control circuit 122 .
  • the drain of the charging switching device Qc is coupled to the positive electrode of the battery cell 11
  • the source electrode of the charging switching device Qc is coupled to the drain of the discharging switching device Qd
  • the detection circuit 121 is coupled to the positive electrode of the battery cell 11 and the gate of the charging switching device Qc and the gate of the discharge switching device Qd
  • the control circuit 122 is coupled to the detection circuit 121, and is coupled to the source of the discharge switching device Qd.
  • the detection circuit 121 includes a detection chip U1 and a detection power supply pin VC, a charging switch driving pin CHG and a discharging switch driving pin DSG which are provided on the detection chip U1.
  • the control circuit 122 includes a control chip U2 and a control power pin VCC disposed on the control chip U2.
  • the detection power pin VC is coupled to the positive electrode of the battery cell 11
  • the charging switch driving pin CHG is coupled to the gate of the charging switching device Qc
  • the discharging switch driving pin DSG is coupled to the gate of the discharging switching device Qd
  • the control power pin VCC is coupled to the source of the discharge switching device Qd.
  • the power supply state of the control circuit 122 can be controlled according to the electric quantity parameter of the battery cell 11 . Specifically, when the detection power supply pin VC of the detection chip U1 detects that the power parameter of the battery cell 11 is lower than the threshold value, the discharge switch drive pin DSG outputs a low level to the gate of the discharge switch device Qd, so that the discharge switch Device Qd is turned off. In this way, the connection between the control circuit 122 and the positive electrode of the battery cell 11 is disconnected, so that the control circuit 122 is in a power-off state.
  • the power parameter may be the voltage value of the battery cell 11 or the remaining power of the battery cell 11 .
  • the threshold value of the electric quantity parameter can be set according to actual needs (eg, different ambient temperatures, different capacities of battery cells 11 , etc.), which is not limited in this application.
  • the power supply states of the detection circuit 121 and the control circuit 122 may also be controlled according to the disconnection time of the battery 10 and the load.
  • the detection chip U1 further includes a detection communication pin
  • the control chip U2 includes a control communication pin
  • the detection communication pin is connected to the control communication pin through the data line SDA and the control line SCL.
  • the detection circuit 121 receives and responds to the control signal, and controls the discharge switch driving pin DSG to output a low level to the gate of the discharge switch device Qd, so that the discharge switch device Qd is turned off. In this way, the connection between the control circuit 122 and the battery cell 11 is disconnected, so that the control circuit 122 is in a power-off state.
  • the control chip U2 may further include a data pin Data
  • the protection circuit 12 may further include a discharge port 123
  • the discharge port 123 includes a discharge positive terminal P+ and a discharge negative terminal P-.
  • the positive discharge terminal P+ is coupled to the source of the discharge switching device Qd, and the negative discharge terminal P- is grounded.
  • the control pole S of the discharge port 123 is coupled to the data pin Data of the control circuit 122.
  • control chip U2 has a timing function, and the control chip U2 itself can directly read the disconnection time between the battery 10 and the load.
  • the protection circuit 12 may further include a clock circuit (not shown).
  • the clock circuit includes a clock chip and a clock power supply pin and a clock communication pin arranged on the clock chip.
  • the clock power pin is coupled to the positive electrode of the battery cell 11
  • the clock communication pin is coupled to the detection communication pin and the control communication pin.
  • the clock chip can record time data, such as year, month, day, weekday, hour, minute, and second, and has the characteristics of low power consumption.
  • the clock circuit outputs time data to the control communication pin of the control chip U2 through the clock communication pin.
  • control chip U2 After the control chip U2 acquires the time data, it can judge whether the disconnection time between the battery 10 and the load exceeds the preset time according to the time data.
  • the control circuit 122 determines that the disconnection time exceeds the preset time, the detection circuit 121 switches to the off state, and controls the discharge switching device Qd to be turned off, so that the control circuit 122 is in the off state.
  • the preset time may be set according to the capacity of the battery 10 , for example, the preset time of the battery 10 with a smaller capacity of the battery 10 may be relatively smaller, such as 5 days, 10 days, 1 month, and so on.
  • the preset time of the battery 10 with a larger capacity of the battery 10 may be relatively larger, for example, 15 days, 20 days, 1 month, 2 months, and the like.
  • control circuit 122 may further include a low dropout linear regulator LDO, which is coupled to the control power pin VCC of the control chip U2 to stabilize the voltage input to the control chip U2.
  • the low dropout linear regulator LDO has the characteristics of low power consumption, small package size and low noise, and can further reduce the power consumption of the protection circuit 12 .
  • the protection circuit 12 further includes a charging port 124, and the charging port 124 includes a charging positive terminal CH+ and a charging negative terminal CH-.
  • the charging positive terminal CH+ is coupled to the source of the discharge switching device Qd, and the charging negative terminal CH- is grounded.
  • the charging port is connected to an external power supply, that is, when the battery is being charged, the source of the discharge switching device Qd is at a high level, and the voltage difference between the source and the gate of the discharge switching device Qd is higher than the turn-on threshold, and the discharge switching device Qd is turned on to Restore power to the protection circuit 12 .
  • the discharge port 123 is coupled to the detection circuit 121 , so that when the battery is connected to the load, the detection circuit detects that the load is connected to the discharge port 123 , and controls the conduction to be coupled to the discharge switch device Qd, so that the battery cell can supply power to the load and the control circuit 122 .
  • the discharge positive terminal P+ of the discharge port 123 is coupled to the sensing input pin PACK of the detection chip U1, and the sensing input pin PACK of the detection chip U1 is used to sense whether the protection circuit 12 is connected to a load or an external power source.
  • the discharge switch drive pin DSG When the sensing input pin PACK of the detection chip U1 senses that the discharge positive terminal P+ is connected to the load, the discharge switch drive pin DSG outputs a high level to the gate of the discharge switching device Qd to turn on the discharge switching device Qd and restore the The battery cell 11 supplies power to the protection circuit 12, and the battery 10 supplies power to the load.
  • the detection circuit 121 is coupled to the positive electrode of the battery cell 11 , the charging switching device Qc and the discharging switching device Qd, the control circuit 122 is coupled to the source electrode of the discharging switching device Qd, and the detection circuit 121 detects the electric quantity parameter of the battery cell 11 When it is lower than the threshold, or when the control circuit 122 determines that the disconnection time between the battery 10 and the load exceeds the preset time, the detection circuit 121 switches to the off state and controls the discharge switching device Qd to be turned off, so that the control circuit 122 and the battery cell 11 The disconnection is in the power-off state, thereby reducing the consumption of the remaining power of the battery 10 by the detection circuit 121 and the control circuit 122 in the state of no charge and discharge, which can reduce the risk of over-discharge during the storage process of the battery 10, and improve the storage time of the battery 10. Safety and prolong the service life of the battery 10 .
  • the power parameter and the preset time can be set according to the actual situation, such as
  • FIG. 2 is a schematic flowchart of the first embodiment of the battery protection method provided by the present application. This embodiment includes the following steps:
  • the detection circuit detects the electric quantity parameter of the battery cell.
  • the battery may include a battery cell and a protection circuit.
  • the battery cell is the power storage part of the battery, including a positive electrode and a negative electrode.
  • the protection circuit includes a charging switching device, a discharging switching device, a detection circuit and a control circuit.
  • the protection circuit includes a charging switching device, a discharging switching device, a detection circuit and a control circuit.
  • the drain of the charging switching device is coupled to the positive electrode of the battery cell
  • the source electrode of the charging switching device is coupled to the drain of the discharging switching device
  • the detection circuit is coupled to the positive electrode of the battery cell, the gate of the charging switching device and the gate of the discharging switching device
  • the control circuit is coupled to the detection circuit, and is coupled to the source of the discharge switching device.
  • the detection circuit includes a detection chip and a detection power supply pin, a charging switch driving pin and a discharging switch driving pin arranged on the detection chip.
  • the control circuit includes a control chip and a control power supply pin arranged on the control chip. The detection power pin is coupled to the positive electrode of the cell, the charge switch drive pin is coupled to the gate of the charge switch device, the discharge switch drive pin is coupled to the gate of the discharge switch device, and the control power pin is coupled to the source of the discharge switch device pole.
  • the electric quantity parameter of the battery cell is detected through the detection power supply pin of the detection circuit.
  • the power parameter can be the voltage value of the cell or the remaining power of the cell.
  • the threshold value of the power parameter can be set according to actual needs (such as different ambient temperatures, different battery cell capacities, etc.), which is not limited in this application.
  • S202 The detection circuit compares the electric quantity parameter and the threshold value.
  • the detection chip of the detection circuit After the detection chip of the detection circuit obtains the electric quantity parameter of the battery cell, it compares the electric quantity parameter and the threshold value. If the power parameter is lower than the threshold, execute S203. If the power parameter is higher than or equal to the threshold, continue to detect the power parameter of the cell.
  • the detection chip controls the discharge switch drive pin to output a low level to the gate of the discharge switch device to turn off the discharge switch device. In this way, the connection between the control circuit and the positive electrode of the battery cell is disconnected, so that the control circuit is in a power-off state.
  • the discharge switch device when the battery is connected to the external power source, the discharge switch device is turned on to restore the power supply of the protection circuit.
  • the protection circuit further includes a charging circuit, the charging circuit includes a charging port, the positive electrode of the charging port is coupled to the source electrode of the discharge switching device, and the negative electrode of the charging port is grounded.
  • the charging port is connected to an external power supply, the source of the discharge switch device is at a high level, and the voltage difference between the source and gate of the discharge switch device is higher than the turn-on threshold, and the discharge switch device is turned on, and the control circuit also switches to work when power is restored. condition.
  • the detection circuit of the present application is coupled to the positive electrode of the battery cell, the charging switch device and the discharge switching device, and the control circuit is coupled to the source electrode of the discharge switching device.
  • the circuit controls the discharge switch device to be turned off, so that the control circuit is disconnected from the battery cell in a power-off state, thereby reducing the consumption of the remaining battery power by the detection circuit and the control circuit in the state of no charge and discharge, and reducing the risk of battery over-discharge. It can improve the storage time and safety of the battery and prolong the service life of the battery.
  • the power parameters can be set according to actual conditions, such as battery storage environment, battery power, etc., which is more flexible.
  • FIG. 3 is a schematic flowchart of the second embodiment of the battery protection method provided by the present application. This embodiment includes the following steps:
  • S301 The control circuit obtains the disconnection time between the battery and the load.
  • the battery may include a battery cell and a protection circuit.
  • the battery cell is the power storage part of the battery, including a positive electrode and a negative electrode.
  • the protection circuit includes a discharge switching device, a detection circuit and a control circuit.
  • the discharge switch device is coupled to the positive electrode of the battery cell
  • the detection circuit is coupled to the positive electrode of the battery cell and the discharge switch device
  • the control circuit is coupled to the detection circuit, and is coupled to the positive electrode of the discharge battery cell through the discharge switch device.
  • the detection circuit includes a detection chip and a detection power supply pin, a charging switch driving pin and a discharging switch driving pin arranged on the detection chip.
  • the control circuit includes a control chip and a control power supply pin arranged on the control chip. The detection power pin is coupled to the positive electrode of the cell, the charge switch drive pin is coupled to the gate of the charge switch device, the discharge switch drive pin is coupled to the gate of the discharge switch device, and the control power pin is coupled to the source of the discharge switch device pole.
  • control chip itself has a timing function, which can record the moment when the battery is disconnected from the load, and can read the current moment, so as to calculate the disconnection time between the battery and the load.
  • the time when the battery is disconnected from the load can be obtained by reading the time of the clock circuit connected to the control circuit.
  • the detection chip further includes a detection communication pin
  • the control chip includes a control communication pin
  • the detection communication pin is coupled to the control communication pin.
  • the protection circuit may also include a clock circuit.
  • the clock circuit includes a clock chip and a clock power supply pin and a clock communication pin arranged on the clock chip.
  • the clock power pin is coupled to the positive electrode of the battery cell, and the clock communication pin is coupled to the detection communication pin and the control communication pin.
  • the clock chip can record time data, such as year, month, day, weekday, hour, minute, and second, and has the feature of protection.
  • the clock circuit outputs time data to the control communication pin of the control chip through the clock communication pin.
  • the control chip makes a difference between the time data currently obtained and the time data when the battery and the load are disconnected, so as to obtain the disconnection time of the battery and the load.
  • S302 The control circuit compares the disconnection time with the preset time.
  • the control circuit obtains the size of the connection disconnection time and the preset time. If the connection disconnection time is greater than the preset time, execute S303. If the disconnection time is less than or equal to the preset time, continue to obtain the disconnection time between the battery and the load.
  • connection disconnection time is greater than the preset time
  • the control circuit sends a control signal to the detection circuit, and the control signal is used to control the discharge switching device to be turned off to disconnect the power supply input of the control circuit.
  • control chip of the control circuit determines that the disconnection time between the battery cell and the load exceeds a preset time
  • the control chip When the control chip of the control circuit determines that the disconnection time between the battery cell and the load exceeds a preset time, the control chip generates a control signal.
  • the control communication pin outputs a control signal to the detection communication pin.
  • the detection chip receives and responds to the control signal through the detection communication pin, and controls the discharge switch drive pin to output a low level to the gate of the discharge switch device, so as to turn off the discharge switch device. In this way, the connection between the control circuit and the positive electrode of the battery cell is disconnected, so that the control circuit is in a power-off state.
  • the discharge switch device after the discharge switch device is turned off, when the battery is connected to an external power source, the discharge switch device is turned on to restore the power supply of the protection circuit.
  • the protection circuit further includes a charging circuit, the charging circuit includes a charging port, the positive electrode of the charging port is coupled to the source electrode of the discharge switching device, and the negative electrode of the charging port is grounded.
  • the charging port is connected to an external power supply, the source of the discharge switch device is at a high level, and the voltage difference between the source and gate of the discharge switch device is higher than the turn-on threshold, and the discharge switch device is turned on, and the control circuit also switches to work when power is restored. condition.
  • the discharge switch device after the discharge switch device is turned off, when the battery is connected to the load, the discharge switch device is turned on to restore the power supply of the protection circuit.
  • the protection circuit further includes a discharge port, and the discharge port includes a discharge positive terminal and a discharge negative terminal.
  • the discharge port is coupled to the detection circuit, so that when the battery is connected to the load, the detection circuit detects that the load is connected to the discharge port, and controls the conduction and coupling of the discharge switch device, so that the battery cell can supply power to the load and the control circuit.
  • the positive discharge terminal of the discharge port is coupled to the sensing input pin of the detection chip, and the sensing input pin of the detection chip is used to sense whether the protection circuit is connected to a load or an external power supply.
  • the discharge switch drive pin When the sensing input pin of the detection chip senses that the discharge positive terminal is connected to the load, the discharge switch drive pin outputs a high level to the gate of the discharge switch device, so as to turn on the discharge switch device and restore the cell's protection to the protection circuit. power supply, and realize the power supply of the battery to the load.
  • the detection circuit is coupled to the positive electrode of the battery cell, the charging switching device and the discharging switching device
  • the control circuit is coupled to the source electrode of the discharging switching device
  • the control circuit determines when the disconnection time between the battery cell and the load exceeds a preset time , the detection circuit controls the discharge switch device to be turned off, so that the control circuit is disconnected from the battery cell and is in a power-off state, thereby reducing the consumption of the remaining battery power by the detection circuit and the control circuit in the state of no charge and discharge, and reducing the over-discharge of the battery. It can improve the storage time and safety of the battery, and prolong the service life of the battery.
  • the preset time can be set according to actual conditions such as battery storage environment, battery power, etc., which is more flexible.
  • FIG. 4 is a schematic structural diagram of an embodiment of the computer storage medium provided by the present application.
  • a computer program 401 is stored in the computer storage medium 400 of this embodiment, which can be executed to implement the method in the above-mentioned embodiment.
  • the computer storage medium 400 in this embodiment may be a medium that can store program instructions, such as a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), or may also be a medium that stores the program instructions.
  • ROM read-only memory
  • RAM random access memory
  • a server the server can send the stored program instructions to other devices for running, or can also run the stored program instructions by itself.
  • the disclosed method and apparatus may be implemented in other manners.
  • the apparatus implementations described above are only illustrative, for example, the division of modules or units is only a logical function division, and other divisions may be used in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this implementation manner.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

La présente demande concerne un procédé et un circuit de protection de batterie, une batterie et un support. Le circuit de protection de batterie est couplé à un élément de batterie, et le circuit de protection comprend : un dispositif de commutation de charge, un drain du dispositif de commutation de charge étant couplé à une électrode positive de l'élément de batterie ; un dispositif de commutation de décharge, un drain du dispositif de commutation de décharge étant couplé à une source du dispositif de commutation de charge ; un circuit de détection, qui est couplé à l'électrode positive de l'élément de batterie, à une grille du dispositif de commutation de charge et à une grille du dispositif de commutation de décharge ; et un circuit de commande couplé au circuit de détection et à une source du dispositif de commutation de décharge, lorsque le circuit de détection détecte que des paramètres de quantité électrique de l'élément de batterie sont inférieurs à un seuil, le dispositif de commutation de décharge étant commandé pour se couper, de telle sorte que le circuit de commande est dans un état hors-tension ; ou lorsque le circuit de commande détermine que le temps de déconnexion entre la batterie et l'équipement de consommation électrique dépasse un temps prédéfini, le dispositif de commutation de décharge étant commandé pour se couper, de telle sorte que le circuit de commande est dans l'état hors-tension. Grâce à la manière précitée, la consommation d'énergie lorsque la batterie est inactive peut être réduite, le risque de surdécharge de la batterie peut être réduit, et le temps de stockage de la batterie peut être prolongé.
PCT/CN2020/116838 2020-09-22 2020-09-22 Procédé et circuit de détection de batterie, batterie et support WO2022061517A1 (fr)

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CN115379622A (zh) * 2022-08-30 2022-11-22 广东乐心医疗电子股份有限公司 穿戴设备的防护电路及其应用方法
CN115622193A (zh) * 2022-11-03 2023-01-17 广州云通锂电池股份有限公司 一种充电电池的保护电路
CN116344980A (zh) * 2023-05-29 2023-06-27 苏州精控能源科技有限公司 电池包内电芯漏液自诊断动态重构系统、方法及存储介质

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CN207426672U (zh) * 2017-11-06 2018-05-29 深圳市创芯微微电子有限公司 一种超低成本三串锂电池保护电路及其芯片
CN109510284A (zh) * 2019-01-02 2019-03-22 张家港华捷电子有限公司 一种锂电保护电子开关

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CN115379622A (zh) * 2022-08-30 2022-11-22 广东乐心医疗电子股份有限公司 穿戴设备的防护电路及其应用方法
CN115622193A (zh) * 2022-11-03 2023-01-17 广州云通锂电池股份有限公司 一种充电电池的保护电路
CN116344980A (zh) * 2023-05-29 2023-06-27 苏州精控能源科技有限公司 电池包内电芯漏液自诊断动态重构系统、方法及存储介质

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