WO2018094840A1 - 电池保护装置及电池保护方法 - Google Patents

电池保护装置及电池保护方法 Download PDF

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Publication number
WO2018094840A1
WO2018094840A1 PCT/CN2016/113499 CN2016113499W WO2018094840A1 WO 2018094840 A1 WO2018094840 A1 WO 2018094840A1 CN 2016113499 W CN2016113499 W CN 2016113499W WO 2018094840 A1 WO2018094840 A1 WO 2018094840A1
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Prior art keywords
battery
battery cell
temperature
circuit
switch
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PCT/CN2016/113499
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English (en)
French (fr)
Inventor
刘毅
赖文华
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/64—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overvoltage
    • 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
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/62—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overcurrent
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/65—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overtemperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/685—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using connection detecting circuits
    • 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 the field of battery protection technologies, and in particular, to a battery protection device and a battery protection method.
  • the temperature of the battery is mainly monitored by the change of the resistance value of the negative temperature coefficient thermistor (NTC), but the NTC is placed on the battery protection board, and only the average of the battery protection board can be detected. temperature.
  • the battery cell is the most temperature sensitive core device in the battery, but because the battery cell is wrapped by an aluminum plastic film, it is difficult for the NTC to directly detect the internal temperature of the battery cell. Many times in real life, because the battery is in use, the battery is self-igniting due to the high temperature of the battery, which seriously affects the user's personal safety.
  • a battery protection device the battery protection device being connected to a battery pack, the battery protection device comprising a temperature control chip and a first switch, the battery package comprising a battery cell and a temperature measuring component;
  • the temperature measuring component is configured to measure a temperature of the battery cell
  • One end of the temperature control chip is connected to the temperature measuring component, the other end of the temperature control chip is connected to the first switch, and the first switch is connected to a charging circuit or a discharging circuit of the battery cell. ;
  • the temperature control chip acquires a temperature of the battery cell measured by the temperature measuring component, and controls charging or discharging of the battery cell by controlling the first switch according to a temperature of the battery cell .
  • the first switch when the battery cell is in a charging state, the first switch is connected to a charging negative circuit or a charging positive circuit of the battery cell; or
  • the first switch When the battery cell is in a discharging state, the first switch is connected to a discharge negative circuit or a discharge positive circuit of the battery cell.
  • the temperature control chip disconnects the first switch to disconnect the charging circuit of the battery cell or discharge Loop.
  • the temperature control chip acquires the temperature of the battery cell again through the temperature measuring component, and updates the temperature of the battery cell;
  • the temperature control chip closes the first switch and turns on a charging circuit or a discharging circuit of the battery cell.
  • the battery protection device further includes a second switch, a voltage protection chip, and a fuse;
  • the second switch is connected to a charging circuit or a discharging circuit of the battery cell, and the voltage protection chip is configured to collect a voltage of the battery pack, and one end of the voltage protection chip is connected to the second switch.
  • the second switch is connected on the charging positive circuit or the discharging positive circuit, the other end of the voltage protection chip is connected to the negative electrode interface of the battery cell, or when the second switch is connected to the charging negative circuit
  • the upper or the discharge negative circuit is connected, the other end of the voltage protection chip is connected to the positive electrode interface of the battery cell;
  • the fuse is connected to a charging positive circuit of the battery cell or to a discharge positive circuit, and the fuse is used to collect a charging current or a discharging current of the battery cell.
  • the voltage protection chip when the voltage of the battery pack collected by the voltage protection chip is higher than the first preset voltage, the voltage protection chip disconnects the second switch, and the battery cell is cut off. Charging circuit or discharging circuit; or
  • the fuse automatically cuts off the charging circuit or the discharging circuit when the charging current or the discharging current of the battery cell detected by the fuse is higher than the first preset current.
  • a battery protection method is applied to a battery protection device, the method comprising:
  • the first switch of the battery protection device is disconnected to disconnect the charging circuit or the discharging circuit of the battery cell.
  • the method further includes:
  • the first switch When the temperature of the updated battery cell is less than or equal to a preset temperature value, the first switch is closed, and the charging circuit or the discharging circuit of the battery cell is turned on.
  • the method further includes:
  • the second switch When the collected voltage of the battery pack is higher than the first preset voltage, the second switch is turned off, and the charging circuit or the discharging circuit of the battery cell is cut off.
  • the method further includes:
  • the current of the charging circuit or the discharging circuit is automatically cut off.
  • the temperature of the battery cell can be collected by the temperature measuring component, and the temperature control chip controls the first switch by controlling the temperature of the battery cell according to the temperature of the battery cell.
  • the charging or discharging of the battery cells can effectively prevent the battery explosion caused by the excessive temperature of the battery cells.
  • FIG. 1 is a schematic view of a battery protection device according to a first preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a battery protection device according to another embodiment of the present invention.
  • FIG. 3 is a flow chart of a preferred embodiment of the battery protection method of the present invention.
  • Battery protection device 1 Battery pack 10 Battery cell 101 Temperature measuring element 102 Temperature control chip 11 First switch 12 Second switch 13 Voltage protection chip 14 resistance 15 Negative temperature coefficient thermistor 16 fuse 17
  • FIG. 1 is a schematic diagram of a battery protection device according to a first preferred embodiment of the present invention.
  • the battery protection device 1 is connected to a battery pack 10.
  • the battery protection device 1 provided in at least one embodiment of the present invention includes a temperature control chip 11 and a first switch 12.
  • the battery pack 10 internally includes a battery cell 101 and a temperature measuring element 102.
  • the battery cell 101 is used for energy storage and supply.
  • the battery protection device 1 may be a device such as a circuit.
  • the temperature measuring component 102 is used to measure the temperature of the battery cell 101.
  • the temperature measuring component 102 can be a temperature sensitive resistor, a temperature sensor (such as a thermocouple, etc.).
  • One end of the temperature control chip 11 is connected to the temperature measuring component 102, the other end of the temperature control chip 11 is connected to the first switch 12, and the first switch 12 is connected to the battery cell 101. On the charging circuit or the discharging circuit.
  • the temperature control chip 11 acquires the temperature of the battery cell 101 measured by the temperature measuring component 102, and controls the battery power by controlling the first switch 12 according to the temperature of the battery cell 101. Charging or discharging of the core 101.
  • the temperature control chip 11 when the first switch 12 is connected to a charging circuit of the battery cell 101, the temperature control chip 11 controls charging of the battery cell 101 when the first When a switch 12 is connected to the discharge circuit of the battery cell 101, the temperature control chip 11 controls the discharge of the battery cell 101.
  • the temperature control chip 11 controls the state of the first switch 12 in accordance with the temperature of the battery cell 101 to control charging or discharging of the battery cell 101.
  • the charging circuit or the discharging circuit is in an on state, and the battery cell 101 is charged or discharged.
  • the charging circuit or the discharging circuit is in an off state, and the battery cell 101 cannot be charged or discharged.
  • the first switch 12 is connected to a charging negative circuit or a discharging negative circuit of the battery cell 101 , and one end of the first switch 12 is connected to a negative interface of the battery cell 101 .
  • the other end of the first switch 12 is connected to the negative interface of the battery protection device 1.
  • the charging circuit or the discharging circuit is in an on state, and the negative terminal of the battery cell 101 and the negative interface of the battery protection device 1 can perform data transmission. That is, the battery cell 101 can be charged or discharged.
  • the first switch 12 is in an off state, the charging circuit or the discharging circuit is in an off state, and the negative interface of the battery cell 101 and the negative interface of the battery protection device 1 cannot perform data transmission. That is, the battery cell 101 cannot be charged or discharged.
  • the first switch 12 is connected to the charging positive circuit or the discharging positive circuit of the battery cell 101, and one end of the first switch 12 is connected to the positive interface of the battery cell 101. And the other end of the first switch 12 is connected to the positive interface of the battery protection device 1.
  • the temperature control chip 11 can include a processor, a memory, and the like.
  • the memory is used to store a program of a battery protection method and various data, and to realize high-speed, automatic completion of access of programs or data during operation of the battery protection device 1.
  • the memory may be an external storage device and/or an internal storage device of the battery protection device 1.
  • the memory may be a circuit having a storage function in a physical form, such as a RAM (Random-Access Memory), a FIFO (First In First Out), or the like.
  • the memory may also be a storage device having a physical form, such as a memory stick, a TF card, or the like.
  • the processor is an operation core (Core) and a control unit of the battery protection device 1.
  • the processor can execute various types of application programs, program codes, and the like installed in the battery protection device 1.
  • connection relationship of the respective components in the battery protection device 1 is not limited to the above embodiment, and the first switch 12 may be connected to other components as well.
  • FIG. 2 is a schematic diagram of a battery protection device according to another embodiment.
  • the battery protection device 1 further includes a second switch 13, a voltage protection chip 14, a resistor 15, a negative temperature coefficient thermistor 16, and a fuse 17.
  • the second switch 13 is connected to a charging circuit or a discharging circuit of the battery cell 101, and the voltage protection chip 15 is configured to collect the voltage of the battery pack 10, One end of the voltage protection chip 101 is connected to the second switch 13.
  • the second switch 13 When the second switch 13 is connected to the charging positive circuit of the battery cell 101 or to the discharge positive circuit, the other end of the voltage protection chip 15 is connected to the negative terminal of the battery cell 101.
  • the second switch 13 is connected to the charging negative circuit or the discharging negative circuit, the other end of the voltage protection chip 15 is connected to the positive terminal of the battery cell 101.
  • the voltage protection chip 15 turns off the second switch 13, and cuts off the battery cell 101. Charging circuit or discharging circuit.
  • the fuse 17 is used to collect a charging current or a discharging current of the battery cell 101.
  • the fuse 17 is connected to the charging positive circuit of the battery cell 101 or to the discharge positive circuit.
  • the fuse 17 detects that the charging current or the discharging current of the battery cell 101 is higher than the first predetermined current, the fuse 17 automatically cuts off the current of the charging circuit or the discharging circuit of the battery cell 101.
  • the resistor 15 is a fixed resistance for identifying the type or capacity of the battery cell 15. As shown in FIG. 2, one end of the resistor 15 is connected to a data pin (ID interface) of the battery protection device 1, and the other end of the resistor 15 is connected to a charging negative circuit.
  • ID interface data pin
  • the negative temperature coefficient thermistor 16 is used to detect the average temperature of the battery protection device 1. As shown in FIG. 2, one end of the negative temperature coefficient thermistor 16 is connected to the temperature pin of the battery protection device 1, and the other end of the negative temperature coefficient thermistor 16 is connected to the charging negative circuit.
  • the present invention is not limited to the above-described circuit of FIG. 1 and FIG. 2, and those skilled in the art can easily infer the remaining embodiments of the above circuit after the disclosure of the present invention. , do not add to the description here.
  • FIG. 4 is a flow chart of a preferred embodiment of the battery protection method of the present invention. The order of the steps in the flowchart may be changed according to different requirements, and some steps may be omitted.
  • the temperature control chip 11 acquires the temperature of the battery cell 101 through the temperature measuring component 102.
  • the temperature measuring component 102 collects the temperature of the battery cell 101 and transmits the temperature of the battery cell 101 to the temperature control chip 11.
  • the temperature control chip 11 determines whether the temperature of the battery cell 101 is greater than or equal to a preset maximum temperature value.
  • the temperature control chip 11 turns off the first switch 12 to disconnect charging or discharging of the battery cell 101.
  • the temperature control chip 11 acquires the temperature of the battery cell 101 again through the temperature measuring component 102, and updates the temperature of the battery cell 101.
  • the temperature control chip 11 determines whether the temperature of the updated battery cell 101 is less than a preset temperature value.
  • the temperature control chip 11 closes the first switch 12, and turns on the charging circuit or discharge of the battery cell 101. Loop.
  • the voltage protection chip 15 when the voltage of the battery pack 10 collected by the voltage protection chip 15 is higher than the first preset voltage, the voltage protection chip 15 turns off the second switch 13 Turning off the charging circuit or the discharging circuit of the battery cell 101.
  • the fuse 17 When the fuse 17 detects that the charging current or the discharging current of the battery cell 101 is higher than the first predetermined current, the fuse 17 automatically cuts off the current of the charging circuit or the discharging circuit of the battery cell 101.
  • an electronic device may include the battery protection device 1.
  • the electronic device is a device capable of automatically performing numerical calculation and/or information processing according to an instruction set or stored in advance, and the hardware thereof includes but is not limited to a microprocessor and an application specific integrated circuit (ASIC). , Field-Programmable Gate Array (FPGA), Digital Signal Processor (DSP), embedded devices, etc.
  • ASIC application specific integrated circuit
  • FPGA Field-Programmable Gate Array
  • DSP Digital Signal Processor
  • the electronic device further includes, but is not limited to, any electronic product that can interact with a user through a keyboard, a mouse, a remote controller, a touch panel or a voice control device, for example, a personal computer, a tablet computer, or a smart phone. , Personal Digital Assistant (PDA), game consoles, Internet Protocol Television (IPTV), smart wearable devices, etc.
  • PDA Personal Digital Assistant
  • IPTV Internet Protocol Television
  • the temperature of the battery cell 101 can be collected by the temperature measuring component 102, and the temperature control chip 11 controls the battery power by controlling the first switch 12 according to the temperature of the battery cell 101.
  • the charging or discharging of the core 101 can effectively prevent the battery explosion caused by the excessive temperature of the battery core.
  • the above-described integrated unit implemented in the form of a software function module can be stored in a computer readable storage medium.
  • the software function modules described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • modules described as separate components may or may not be physically separated, and the components displayed as modules 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 modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional module in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software function modules.

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

Abstract

一种电池保护装置（1）和一种电池保护方法。该电池保护装置（1）与电池包（10）相连接，电池保护装置包括温度控制芯片（11）及第一开关（12），该电池包包括电池电芯（101）和温度测量元件（102）；该温度测量元件用于测量电池电芯的温度；温度控制芯片的一端与温度测量元件连接，温度控制芯片的另一端与第一开关连接，第一开关连接在电池电芯的充电回路或者放电回路上；温度控制芯片获取温度测量元件所测量的电池电芯的温度，并根据电池电芯的温度，通过控制第一开关来控制电池电芯的充电或放电。该电池保护装置及方法可以有效地防止因电芯温度过高造成的电池爆炸。

Description

电池保护装置及电池保护方法
本申请要求于2016年11月23日提交中国专利局，申请号为201611038668.0、发明名称为“电池保护装置及电池保护方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电池保护技术领域，尤其涉及一种电池保护装置及电池保护方法。
背景技术
现有技术中，对电池进行保护时，主要依靠负温度系数热敏电阻（NTC）阻值的变化来监测电池的温度，但NTC放置于电池保护板上，只能检测电池电池保护板的平均温度。电芯是电池中对温度最为敏感的核心器件，但由于电芯由铝塑膜进行包裹，NTC很难直接检测到电芯的内部温度。现实生活中很多时候回因为电池在使用过程中，因电芯温度过高引起了电池自燃，严重影响了使用者的人身安全。
发明内容
鉴于以上内容，有必要提供一种电池保护装置及电池保护方法，可以有效地防止因电芯温度过高造成的电池爆炸。
一种电池保护装置，所述电池保护装置与电池包相连接，所述电池保护装置包括温度控制芯片及第一开关，所述电池包包括电池电芯和温度测量元件；
所述温度测量元件用于测量所述电池电芯的温度；
所述温度控制芯片的一端与所述温度测量元件连接，所述温度控制芯片的另一端与所述第一开关连接，所述第一开关连接在所述电池电芯的充电回路或者放电回路上；
所述温度控制芯片获取所述温度测量元件所测量的所述电池电芯的温度，并根据所述电池电芯的温度，通过控制所述第一开关来控制所述电池电芯的充电或放电。
根据本发明优选实施例，当所述电池电芯处于充电状态时，所述第一开关连接在所述电池电芯的充电负极回路或充电正极回路上；或
当所述电池电芯处于放电状态时，所述第一开关连接在所述电池电芯的放电负极回路或放电正极回路上。
根据本发明优选实施例，当所述电池电芯的温度大于或者等于预设最高温度值时，所述温度控制芯片断开所述第一开关以断开所述电池电芯的充电回路或者放电回路。
根据本发明优选实施例，所述温度控制芯片通过所述温度测量元件再次获取所述电池电芯的温度，并更新所述电池电芯的温度；
当更新后的所述电池电芯的温度小于或等于预设温度值时，所述温度控制芯片闭合所述第一开关，接通所述电池电芯的充电回路或放电回路。
根据本发明优选实施例，所述电池保护装置还包括第二开关、电压保护芯片及保险丝；
所述第二开关连接在所述电池电芯的充电回路或者放电回路上，所述电压保护芯片用于采集所述电池包的电压，所述电压保护芯片的一端与所述第二开关相连，当所述第二开关连接在充电正极回路上或者放电正极回路上时，所述电压保护芯片的另一端连接在所述电池电芯的负极接口，或者当所述第二开关连接在充电负极回路上或者放电负极回路上时，所述电压保护芯片的另一端连接在所述电池电芯的正极接口；
所述保险丝连接在所述电池电芯的充电正极回路上或者放电正极回路上，所述保险丝用于采集所述电池电芯的充电电流或者放电电流。
根据本发明优选实施例，当所述电压保护芯片所采集的所述电池包的电压高于第一预设电压时，所述电压保护芯片断开所述第二开关，切断所述电池电芯的充电回路或者放电回路；或
当所述保险丝检测的所述电池电芯的充电电流或者放电电流高于第一预设电流时，所述保险丝自动切断所述充电回路或者放电回路。
一种电池保护方法，应用于电池保护装置中，所述方法包括：
通过所述电池保护装置的温度测量元件获取所述电池保护装置的电池电芯的温度；
当所述电池电芯的温度大于或者等于预设最高温度值时，断开所述电池保护装置的第一开关以断开所述电池电芯的充电回路或者放电回路。
根据本发明优选实施例，所述方法还包括：
通过所述温度测量元件再次获取所述电池电芯的温度，并更新所述电池电芯的温度；
当更新后的所述电池电芯的温度小于或等于预设温度值时，闭合所述第一开关，接通所述电池电芯的充电回路或放电回路。
根据本发明优选实施例，所述方法还包括：
获取所述电池保护装置的电压保护芯采集所述电池保护装置的电池包的电压；
当所采集的所述电池包的电压高于第一预设电压时，断开所述第二开关，切断所述电池电芯的充电回路或者放电回路。
根据本发明优选实施例，所述方法还包括：
通过所述电池保护装置的保险丝检测所述电池电芯的充电电流或者放电电流；
当所检测到所述电池电芯的充电电流或者放电电流高于第一预设电流时，自动切断所述充电回路或者放电回路的电流。
由以上技术方案可以看出，本发明能通过所述温度测量元件采集所述电池电芯的温度，所述温度控制芯片根据所述电池电芯的温度，通过控制所述第一开关来控制所述电池电芯的充电或放电，可以有效地防止因电芯温度过高造成的电池爆炸。
 附图说明
图1是本发明第一较佳实施例的电池保护装置示意图。
图2是本发明另一实施例的电池保护装置示意图。
图3是本发明电池保护方法的较佳实施例的流程图。
主要元件符号说明
电池保护装置 1
电池包 10
电池电芯 101
温度测量元件 102
温度控制芯片 11
第一开关 12
第二开关 13
电压保护芯片 14
电阻 15
负温度系数热敏电阻 16
保险丝 17
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对本发明进行详细描述。
如图1所示，图1是本发明第一较佳实施例的电池保护装置示意图所述电池保护装置1与电池包10相连接。在本发明的至少一个实施例提供的电池保护装置1包括温度控制芯片11及第一开关12。所述电池包10内部包含电池电芯101和温度测量元件102。所述电池电芯101用于能量存储与供给。所述电池保护装置1可以是电路等装置。
在本发明的至少一个实施例中，所述温度测量元件102用于测量所述电池电芯101的温度。所述温度测量元件102可以是温敏电阻、温度传感器（如热电偶等等）。
所述温度控制芯片11的一端与所述温度测量元件102连接，所述温度控制芯片11的另一端与所述第一开关12连接，所述第一开关12连接在所述电池电芯101的充电回路或者放电回路上。
所述温度控制芯片11获取所述温度测量元件102所测量的所述电池电芯101的温度，并根据所述电池电芯101的温度，通过控制所述第一开关12来控制所述电池电芯101的充电或放电。
在本发明的至少一个实施例中，当所述第一开关12连接在所述电池电芯101的充电回路时，所述温度控制芯片11控制所述电池电芯101的充电，当所述第一开关12连接在所述电池电芯101的放电回路时，所述温度控制芯片11控制所述电池电芯101的放电。
在本发明的至少一个实施例中，所述温度控制芯片11根据所述电池电芯101的温度控制所述第一开关12的状态，以控制所述电池电芯101的充电或放电。当所述第一开关12处于闭合状态时，所述充电回路或者所述放电回路处于接通状态，所述电池电芯101进行充电或放电。当所述第一开关12处于断开状态时，所述充电回路或者所述放电回路处于断开状态，所述电池电芯101不能进行充电或放电。
如图1所示，所述第一开关12连接在所述电池电芯101的充电负极回路或放电负极回路上，所述第一开关12的一端与所述电池电芯101的负极接口连接，所述第一开关12的另一端与所述电池保护装置1的负极接口连接。当所述第一开关12处于闭合状态时，所述充电回路或者所述放电回路处于接通状态，所述电池电芯101的负极接口与所述电池保护装置1的负极接口能进行数据传输，即所述电池电芯101能进行充电或放电。当所述第一开关12处于断开状态时，所述充电回路或者所述放电回路处于断开状态，所述电池电芯101的负极接口与所述电池保护装置1的负极接口不能进行数据传输，即所述电池电芯101不能进行充电或放电。
在其他实施例中，所述第一开关12连接在所述电池电芯101的充电正极回路或放电正极回路上，所述第一开关12的一端与所述电池电芯101的正极接口相连，及所述第一开关12的另一端与所述电池保护装置1的正极接口连接。
在本发明的至少一个实施例中，所述温度控制芯片11可以包括处理器、存储器等。
所述存储器用于存储一种电池保护方法的程序和各种数据，并在所述电池保护装置1运行过程中实现高速、自动地完成程序或数据的存取。所述存储器可以是所述电池保护装置1的外部存储设备和/或内部存储设备。进一步地，所述存储器可以是集成电路中没有实物形式的具有存储功能的电路，如RAM（Random-Access Memory，随机存取存储设备）、FIFO（First In First Out，）等。或者，所述存储器也可以是具有实物形式的存储设备，如内存条、TF卡（Trans-flash Card）等等。
所述处理器是所述电池保护装置1的运算核心（Core）和控制核心（Control Unit）。所述处理器可执行所述电池保护装置1中安装的各类应用程序、程序代码等。
需要指出的是，所述电池保护装置1中的各个元件的连接关系不限于上述实施例中，如所述第一开关12也可以与其他元件相连。
如图2所示，图2是另一实施例的电池保护装置示意图。所述电池保护装置1还包括第二开关13、电压保护芯片14、电阻15、负温度系数热敏电阻16及保险丝17。
在本发明的至少一个实施例中，所述第二开关13连接在所述电池电芯101的充电回路或者放电回路上，所述电压保护芯片15用于采集所述电池包10的电压，所述电压保护芯片101的一端与所述第二开关13相连。当所述第二开关13连接在所述电池电芯101的充电正极回路上或者放电正极回路上时，所述电压保护芯片15的另一端连接在所述电池电芯101的负极接口。如图2所示，当所述第二开关13连接在充电负极回路上或者放电负极回路上时，所述电压保护芯片15的另一端连接在所述电池电芯101的正极接口。当所述电压保护芯片15所采集的所述电池包10的电压高于第一预设电压时，所述电压保护芯片15断开所述第二开关13，切断所述所述电池电芯101的充电回路或者放电回路。
在本发明的至少一个实施例中，所述保险丝17用于采集所述电池电芯101的充电电流或者放电电流。所述保险丝17连接在所述电池电芯101的充电正极回路上或者放电正极回路上。当所述保险丝17检测到所述电池电芯101的充电电流或者放电电流高于第一预设电流时，所述保险丝17自动切断所述电池电芯101的充电回路或者放电回路的电流。
在本发明的至少一个实施例中，所述电阻15是固定阻值，用于标识所述电池电芯15的类型或者容量。如图2所示，所述电阻15的一端连接所述电池保护装置1的数据引脚（ID接口），所述电阻15的另一端连接在充电负极回路上。
在本发明的至少一个实施例中，所述负温度系数热敏电阻16用于检测所述电池保护装置1的平均温度。如图2所示，所述负温度系数热敏电阻16的一端连接所述电池保护装置1的温度引脚，所述负温度系数热敏电阻16的另一端连接在充电负极回路上。
仅为本发明的一实施例，本发明并不以上述图1及图2的电路为限，本技术领域具有通常知识者在经由本发明的揭露后，应可轻易推知上述电路的其余实施方式，在此不加累述。
如图4所示，是本发明电池保护方法较佳实施例的流程图。根据不同的需求，该流程图中步骤的顺序可以改变，某些步骤可以省略。
S10，所述温度控制芯片11通过所述温度测量元件102获取所述电池电芯101的温度。
在本发明的至少一个实施例中，所述温度测量元件102采集所述电池电芯101的温度，并将所述电池电芯101的温度发送至所述温度控制芯片11。
S11，所述温度控制芯片11判断所述电池电芯101的温度是否大于或者等于预设最高温度值。
在本发明的至少一个实施例中，当所述电池电芯101的温度大于或者等于预设最高温度值时，执行S12。当所述电池电芯101的温度小于预设最高温度值时，返回执行S10。
S12，当所述电池电芯101的温度大于或者等于预设最高温度值时，所述温度控制芯片11断开所述第一开关12以断开所述电池电芯101的充电或者放电。
S13，所述温度控制芯片11通过所述温度测量元件102再次获取所述电池电芯101的温度，并更新所述电池电芯101的温度。
S14，所述温度控制芯片11判断更新后的所述电池电芯101的温度是否小于预设温度值。
在本发明的至少一个实施例中，当更新后的所述电池电芯101的温度小于或等于预设温度值时，执行S15。当所述电池电芯101的温度打于预设最高温度值时，返回执行S13。
S15，当更新后的所述电池电芯101的温度小于或等于预设温度值时，所述温度控制芯片11闭合所述第一开关12，接通所述电池电芯101的充电回路或放电回路。
在本发明的其他实施例中，当所述电压保护芯片15所采集的到所述电池包10的电压高于第一预设电压时，所述电压保护芯片15断开所述第二开关13，切断所述电池电芯101的充电回路或者放电回路。
当所述保险丝17检测所述电池电芯101的充电电流或者放电电流高于第一预设电流时，所述保险丝17自动切断所述电池电芯101的充电回路或者放电回路的电流。
在本发明的其他实施例中，一个电子设备可以包括所述电池保护装置1。
所述电子设备是一种能够按照事先设定或存储的指令，自动进行数值计算和/或信息处理的设备，其硬件包括但不限于微处理器、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程门阵列(Field－Programmable Gate Array，FPGA)、数字处理器(Digital Signal Processor，DSP)、嵌入式设备等。
所述电子设备还包括，但不限于：任何一种可与用户通过键盘、鼠标、遥控器、触摸板或声控设备等方式进行人机交互的电子产品，例如，个人计算机、平板电脑、智能手机、个人数字助理（Personal Digital Assistant，PDA）、游戏机、交互式网络电视（Internet Protocol Television，IPTV）、智能式穿戴式设备等。
本发明能通过所述温度测量元件102采集所述电池电芯101的温度，所述温度控制芯片11根据所述电池电芯101的温度，通过控制所述第一开关12来控制所述电池电芯101的充电或放电，可以有效地防止因电芯温度过高造成的电池爆炸。
上述以软件功能模块的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能模块存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）或处理器（processor）执行本发明各个实施例所述方法的部分步骤。
在本发明所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能模块可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能模块的形式实现。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化涵括在本发明内。不应将权利要求中的任何附关联图标记视为限制所涉及的权利要求。
此外，显然“包括”一词不排除其他单元或步骤，单数不排除复数。系统权利要求中陈述的多个单元或装置也可以由一个单元或装置通过软件或者硬件来实现。第二等词语用来表示名称，而并不表示任何特定的顺序。
最后应说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或等同替换，而不脱离本发明技术方案的精神和范围。

Claims (10)

  1. 一种电池保护装置，其特征在于，所述电池保护装置与电池包相连接，所述电池保护装置包括温度控制芯片及第一开关，所述电池包包括电池电芯及温度测量元件；
    所述温度测量元件用于测量所述电池电芯的温度；
    所述温度控制芯片的一端与所述温度测量元件连接，所述温度控制芯片的另一端与所述第一开关连接，所述第一开关连接在所述电池电芯的充电回路或者放电回路上；
    所述温度控制芯片获取所述温度测量元件所测量的所述电池电芯的温度，并根据所述电池电芯的温度，通过控制所述第一开关来控制所述电池电芯的充电或放电。
  2. 如权利要求1所述的电池保护装置，其特征在于，当所述电池电芯处于充电状态时，所述第一开关连接在所述电池电芯的充电负极回路或充电正极回路上；或
    当所述电池电芯处于放电状态时，所述第一开关连接在所述电池电芯的放电负极回路或放电正极回路上。
  3. 如权利要求1所述的电池保护装置，其特征在于，当所述电池电芯的温度大于或者等于预设最高温度值时，所述温度控制芯片断开所述第一开关以断开所述电池电芯的充电回路或者放电回路。
  4. 如权利要求3所述的电池保护装置，其特征在于，所述温度控制芯片通过所述温度测量元件再次获取所述电池电芯的温度，并更新所述电池电芯的温度；
    当更新后的所述电池电芯的温度小于或等于预设温度值时，所述温度控制芯片闭合所述第一开关，接通所述电池电芯的充电回路或放电回路。
  5. 如权利要求1至4中任一项所述的电池保护装置，其特征在于，所述电池保护装置还包括第二开关、电压保护芯片及保险丝；
    所述第二开关连接在所述电池电芯的充电回路或者放电回路上，所述电压保护芯片用于采集所述电池包的电压，所述电压保护芯片的一端与所述第二开关相连，当所述第二开关连接在充电正极回路上或者放电正极回路上时，所述电压保护芯片的另一端连接在所述电池电芯的负极接口，或者当所述第二开关连接在充电负极回路上或者放电负极回路上时，所述电压保护芯片的另一端连接在所述电池电芯的正极接口；
    所述保险丝连接在所述电池电芯的充电正极回路上或者放电正极回路上，所述保险丝用于采集所述电池电芯的充电电流或者放电电流。
  6. 如权利要求5所述的电池保护装置，其特征在于，当所述电压保护芯片所采集的所述电池包的电压高于第一预设电压时，所述电压保护芯片断开所述第二开关，切断所述电池电芯的充电回路或者放电回路；或
    当所述保险丝检测的所述电池电芯的充电电流或者放电电流高于第一预设电流时，所述保险丝自动切断所述充电回路或者放电回路。
  7. 一种电池保护方法，应用于电池保护装置中，其特征在于，所述方法包括：
    通过所述电池保护装置的温度测量元件获取所述电池保护装置的电池电芯的温度；
    当所述电池电芯的温度大于或者等于预设最高温度值时，断开所述电池保护装置的第一开关以断开所述电池电芯的充电回路或者放电回路。
  8. 如权利要求7所述的电池保护方法，其特征在于，所述方法还包括：
    通过所述温度测量元件再次获取所述电池电芯的温度，并更新所述电池电芯的温度；
    当更新后的所述电池电芯的温度小于或等于预设温度值时，闭合所述第一开关，接通所述电池电芯的充电回路或放电回路。
  9. 如权利要求7所述的电池保护方法，其特征在于，所述方法还包括：
    获取所述电池保护装置的电压保护芯采集所述电池保护装置的电池包的电压；
    当所采集的所述电池包的电压高于第一预设电压时，断开所述第二开关，切断所述电池电芯的充电回路或者放电回路。
  10. 如权利要求7所述的电池保护方法，其特征在于，所述方法还包括：
    通过所述电池保护装置的保险丝检测所述电池电芯的充电电流或者放电电流；
    当所检测到所述电池电芯的充电电流或者放电电流高于第一预设电流时，自动切断所述充电回路或者放电回路的电流。
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