WO2017201735A1 - Carte de protection de batterie, batterie et terminal mobile - Google Patents

Carte de protection de batterie, batterie et terminal mobile Download PDF

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Publication number
WO2017201735A1
WO2017201735A1 PCT/CN2016/083692 CN2016083692W WO2017201735A1 WO 2017201735 A1 WO2017201735 A1 WO 2017201735A1 CN 2016083692 W CN2016083692 W CN 2016083692W WO 2017201735 A1 WO2017201735 A1 WO 2017201735A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
charging
mobile terminal
circuit
wire
Prior art date
Application number
PCT/CN2016/083692
Other languages
English (en)
Chinese (zh)
Inventor
田晨
张加亮
Original Assignee
广东欧珀移动通信有限公司
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.)
Filing date
Publication date
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Priority to CN201680001789.XA priority Critical patent/CN106489223A/zh
Priority to PCT/CN2016/083692 priority patent/WO2017201735A1/fr
Priority to JP2018554754A priority patent/JP6665317B2/ja
Priority to KR1020187029583A priority patent/KR102121545B1/ko
Priority to PCT/CN2017/085793 priority patent/WO2017202349A1/fr
Priority to US15/606,463 priority patent/US10644520B2/en
Publication of WO2017201735A1 publication Critical patent/WO2017201735A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H02J7/0085—
    • H02J7/0086—
    • 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

  • Embodiments of the present invention relate to the field of mobile terminals, and, more particularly, to a battery protection board, a battery, and a mobile terminal.
  • mobile terminals such as smart phones
  • the security of mobile terminals has become the focus of users.
  • the present application provides a battery protection board and a battery suitable for a mobile terminal, and provides a mobile terminal.
  • a battery protection board includes: a protection circuit connected to a charge and discharge circuit of a battery in a mobile terminal, wherein the protection circuit is configured to control conduction and shutdown of the charge and discharge circuit;
  • the wire is connected in series in the charging and discharging circuit;
  • the battery fuel gauge is connected to both ends of the wire, and the battery fuel gauge is charged and discharged during the charging and discharging of the battery through the charging and discharging circuit. Detecting a voltage drop generated by the impedance of the wire and determining a quantity of the battery based on the voltage drop; wherein the wire is coupled in parallel with a temperature compensating electronic component for counteracting the effect of temperature changes on the wire impedance.
  • a battery comprising a battery cell, and a battery protection plate as described in the first aspect, the battery protection plate being coupled to the battery cell.
  • a mobile terminal comprising a charging interface, and a battery as described in the second aspect, the battery being coupled to the charging interface.
  • the temperature compensation electronic component is a negative temperature coefficient (NTC) resistor.
  • NTC negative temperature coefficient
  • the wire is an impedance-designed trace in the battery protection panel.
  • the battery fuel gauge includes the temperature detection circuit.
  • the protection circuit includes: a field effect transistor, the field effect transistor is located in the charge and discharge circuit; and a controller, the controller is connected to the field effect transistor (eg, with a field effect) The gate of the tube) controls conduction and shutdown of the charge and discharge circuit through the field effect transistor.
  • the protection circuit may be a first protection circuit in the battery protection board, and the battery protection board may further include: a second protection circuit, the second protection circuit and the charging The discharge circuits are connected, and the charge and discharge circuits are over-pressed and/or over-current protected by fuses.
  • the mobile terminal supports a normal charging mode and a fast charging mode, wherein the charging speed of the fast charging mode is greater than the charging speed of the normal charging mode.
  • the charging current of the fast charging mode is greater than the charging current of the normal charging mode.
  • the charging voltage of the fast charging mode is greater than the charging voltage of the normal charging mode.
  • the mobile terminal in the fast charging mode, performs two-way communication with an adapter through the charging interface.
  • the battery protection board provided by the present application not only reduces the number of devices in the battery protection board, but also saves the layout area and the cost of the battery protection board, and reduces the failure rate of the battery protection board.
  • FIG. 1 is an exemplary diagram of a battery protection board.
  • FIG. 2 is a schematic circuit diagram of a battery protection board according to an embodiment of the present invention.
  • FIG. 3 is a schematic circuit diagram of a battery protection board according to an embodiment of the present invention.
  • FIG. 4 is a schematic circuit diagram of a battery protection board according to an embodiment of the present invention.
  • Fig. 5 is a schematic circuit diagram of a battery protection board according to an embodiment of the present invention.
  • Fig. 6 is a schematic structural view of a battery according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • FIG. 1 is an exemplary diagram of a battery protection board.
  • the battery protection panel 10 of Figure 1 includes:
  • the protection circuit 11 is connected to the charge and discharge circuit 13 of the battery in the mobile terminal, and the protection circuit 11 is used to control the on and off of the charge and discharge circuit 13;
  • the current detecting resistor 14 is connected in series in the charging and discharging circuit 13;
  • the battery fuel gauge 15 is connected to both ends of the current detecting resistor 14. During the charging and discharging of the battery through the charging and discharging circuit, the battery fuel gauge 15 detects the voltage drop generated by the impedance of the current detecting resistor 14, and according to the The voltage drop determines the battery's charge.
  • the protection circuit 11 of FIG. 1 includes a control IC 16 and a pair of back-to-back MOS transistors T1 and T2, which are connected to the MOS transistor T1 and the MOS transistor T2 through the Cout terminal and the Dout terminal, respectively.
  • the Cout terminal can be an overcharge control terminal that controls the switching of the MOS transistor through the gate voltage of the MOS transistor T2.
  • the Dout terminal can be an over-discharge, over-current, or short-circuit control terminal that controls the switching of the MOS transistor through the gate voltage of the MOS transistor T1.
  • P+ and P- represent the positive and negative electrodes of the battery protection panel 10, respectively.
  • P+ and P- represent the positive and negative electrodes of the battery cell 12 which are taken out through the battery protection plate 10, respectively.
  • the size of mobile terminals is getting smaller and smaller, and the integration requirements for circuits are getting higher and higher.
  • the battery protection board in the scheme not only integrates the protection circuit, but also integrates the battery fuel gauge, and has high integration degree, which is suitable for application inside the mobile terminal and provides protection for the battery of the mobile terminal.
  • the current-sense resistor 14 may be removed and the battery fuel gauge 15 connected to both ends of one or more MOS tubes of the protection circuit 11. That is to say, the current detecting function can be realized by using the resistor Rds of the MOS transistor instead of the current detecting resistor 14, so that the device in the battery protection board 10 can be further reduced.
  • the above embodiment has high reliability requirements for the MOS transistor in the protection circuit 11.
  • the battery fuel gauge 15 and the wire 17 on the battery protection board 10 may be used.
  • the wire 17 may be a section of the battery protection board 10, and the route may be passed through.
  • the copper sheath of the impedance design is connected, that is, the current-sense resistor 14 of FIG. 1 is replaced by the resistance of the wire 17 in the battery protection panel 10. This not only reduces the number of devices in the battery protection board, saves the layout area and the cost of the battery protection board, but also reduces the battery protection. The failure rate of the shield.
  • the battery protection board is generally sealed in the battery together with the battery core. Due to the limited volume of the battery, the area of the battery protection board is relatively small, resulting in poor heat dissipation of the battery protection board.
  • the scheme of FIG. 2 can improve the integration degree of the battery protection board, but subject to the limitation of the area of the battery protection board, the heat generation of the wire 17 during the current detection process may be relatively large, resulting in a high temperature rise of the battery protection board.
  • the impedance of a wire (such as a copper wire) is positively related to temperature, that is, the greater the temperature, the greater the impedance of the wire. Since the battery fuel gauge measures the current in the charge and discharge circuit in a manner that the impedance of the current-sense resistor (the current-sense resistor in FIG. 2 is a wire) is fixed, the temperature rise of the battery protection plate is higher. The measurement results of the battery fuel gauge will be less accurate.
  • the scheme shown in FIG. 3 can be employed, that is, the NTC resistor 18 is connected in parallel across the wire 17.
  • the characteristic of the NTC resistor 18 is that as the temperature increases, the resistance decreases.
  • the embodiment of the present invention selects the NTC resistor 18 for counteracting the influence of the temperature change on the impedance of the wire, and does not limit the embodiment of the present invention. It can be understood that other temperature compensation electronic components and/or other embodiments may be selected in the embodiment of the present invention. Or circuit (such as negative temperature coefficient electronic components), only the temperature compensation electronic components and / or circuits (such as negative temperature coefficient electronic components) can offset / compensate for the influence of temperature changes on the impedance of the wire or the change of impedance, thus ensuring The accuracy of the calculation results of the battery fuel gauge.
  • the protection circuit 11 may be the first protection circuit in the battery protection board 10.
  • the battery protection board 10 may further include:
  • the second protection circuit 21 and the second protection circuit 21 can provide protection for the charging and discharging process of the battery in case of failure of the protection circuit.
  • the battery protection panel 10 can also include a temperature detection circuit 19.
  • the temperature detecting circuit 19 may be separate from the battery fuel gauge 15 or may be located in the battery fuel gauge 15.
  • temperature sensing circuit 19 can be located in battery fuel gauge 15 and sense temperature through a thermistor.
  • the thermistor may be an NTC resistor or a positive temperature coefficient (PTC) resistor.
  • PTC positive temperature coefficient
  • one end of the thermistor is connected to the positive pole P+ of the battery protection plate by a pull-up resistor.
  • the second protection circuit 21 can provide overvoltage or overcurrent protection for the charge and discharge process of the battery through the fuse.
  • the second protection circuit 21 may include a first fuse pin F1 and a second fuse pin F2. When an overvoltage or overcurrent occurs in the charge and discharge circuit 13, the second protection circuit 21 is located. The fuse between the first fuse pin F1 and the second fuse pin F2 is blown.
  • the battery protection panel of the embodiment of the present invention has been described in detail above with reference to FIGS. 1 through 5.
  • the battery and the mobile terminal of the embodiment of the present invention will be described in detail below with reference to FIGS. 6 and 7.
  • Fig. 6 is a schematic structural view of a battery according to an embodiment of the present invention.
  • the battery 600 of Figure 6 includes:
  • a battery protection board 620 is connected to the battery core 610.
  • the battery protection board 620 in FIG. 6 can adopt the battery protection board described above, and to avoid repetition, it will not be described in detail herein.
  • FIG. 7 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal 700 of FIG. 7 includes:
  • a battery 600 is connected to the charging interface 710.
  • the mobile terminal 700 can support a normal charging mode and a fast charging mode, wherein the charging speed of the fast charging mode is greater than the charging speed of the normal charging mode.
  • the charging current of the fast charging mode is greater than the charging current of the normal charging mode.
  • the mobile terminal 700 performs bidirectional communication with the adapter through the charging interface 710.
  • the embodiment of the present invention does not specifically limit the communication process between the mobile terminal and the adapter.
  • the communication between the mobile terminal and the adapter may refer to the handshake process of the two parties, that is, the mobile terminal and the adapter determine the charging mode, the charging voltage, and the charging by shaking hands. Current and other parameters.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed 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 of the embodiment.
  • each functional unit 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 functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne une carte de protection de batterie, une batterie et un terminal mobile. La carte de protection de batterie comprend : un circuit de protection (11) connecté à un circuit de charge/décharge (13) d'une batterie dans un terminal mobile, le circuit de protection étant utilisé pour commander la mise sous tension et hors tension du circuit de charge/décharge ; un conducteur (17), le conducteur étant connecté en série dans le circuit de charge/décharge ; et une jauge de niveau de batterie (15), la jauge de niveau de batterie étant connectée aux bornes du conducteur. Pendant le processus de charge ou de décharge de la batterie par l'intermédiaire du circuit de charge/décharge, la jauge de niveau de batterie détecte une chute de tension produite par l'impédance du conducteur et détermine le niveau d'énergie de la batterie sur la base de la chute de tension. Des composants électroniques de compensation de température (18) utilisés pour annuler des variations en température sont connectés en parallèle aux bornes du conducteur. La carte de protection de batterie, la batterie et le terminal mobile réduisent le nombre de composants dans la carte de protection de batterie et réduisent la superficie nécessaire à l'implantation sur la carte et les coûts de la carte de protection de batterie.
PCT/CN2016/083692 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile WO2017201735A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN201680001789.XA CN106489223A (zh) 2016-05-27 2016-05-27 电池保护板、电池和移动终端
PCT/CN2016/083692 WO2017201735A1 (fr) 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile
JP2018554754A JP6665317B2 (ja) 2016-05-27 2017-05-24 電池保護基板、電池、および携帯端末
KR1020187029583A KR102121545B1 (ko) 2016-05-27 2017-05-24 배터리 보호 보드, 배터리 및 이동 단말기
PCT/CN2017/085793 WO2017202349A1 (fr) 2016-05-27 2017-05-24 Carte de protection de batterie, batterie et terminale mobile
US15/606,463 US10644520B2 (en) 2016-05-27 2017-05-26 Battery protection board, battery and mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/083692 WO2017201735A1 (fr) 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/083693 Continuation-In-Part WO2017201736A1 (fr) 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminale mobile

Related Child Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/083691 Continuation-In-Part WO2017201734A1 (fr) 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile

Publications (1)

Publication Number Publication Date
WO2017201735A1 true WO2017201735A1 (fr) 2017-11-30

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PCT/CN2016/083692 WO2017201735A1 (fr) 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile

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CN (1) CN106489223A (fr)
WO (1) WO2017201735A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112986879B (zh) * 2019-12-16 2023-11-14 北京小米移动软件有限公司 电量计校正方法和装置、电子设备、存储介质
CN113295291A (zh) * 2020-02-21 2021-08-24 Oppo广东移动通信有限公司 温度检测方法、装置、电子设备和计算机可读存储介质
CN115343529B (zh) * 2022-10-12 2023-03-10 荣耀终端有限公司 一种电量检测电路、方法及电子设备

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Publication number Priority date Publication date Assignee Title
CN1134620A (zh) * 1995-01-19 1996-10-30 京都陶瓷株式会社 蓄电池充电器
CN2678222Y (zh) * 2003-12-01 2005-02-09 珠海市三超模型有限公司 一种负载和电源控制保护电路
CN2935489Y (zh) * 2006-06-19 2007-08-15 许英熙 手持式电子装置的电池模组及其电池保护电路板
CN105021998A (zh) * 2015-08-11 2015-11-04 深圳市亿通科技有限公司 电池电压检测装置及电子设备

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Publication number Priority date Publication date Assignee Title
CN100578889C (zh) * 2007-07-25 2010-01-06 中兴通讯股份有限公司 为便携式手持设备的电池充电的方法
CN102176627A (zh) * 2011-02-10 2011-09-07 张佳宾 一体化蓄电池充放电过程自适应测控系统
CN104269899B (zh) * 2014-09-25 2017-09-15 武汉中原长江科技发展有限公司 机载锂离子蓄电池系统
CN104579172B (zh) * 2014-11-28 2017-06-06 上海华虹宏力半导体制造有限公司 具有温度系数补偿的电阻电路
CN204422727U (zh) * 2015-01-29 2015-06-24 深圳市路远电子科技有限公司 高精度电量显示电池保护板

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1134620A (zh) * 1995-01-19 1996-10-30 京都陶瓷株式会社 蓄电池充电器
CN2678222Y (zh) * 2003-12-01 2005-02-09 珠海市三超模型有限公司 一种负载和电源控制保护电路
CN2935489Y (zh) * 2006-06-19 2007-08-15 许英熙 手持式电子装置的电池模组及其电池保护电路板
CN105021998A (zh) * 2015-08-11 2015-11-04 深圳市亿通科技有限公司 电池电压检测装置及电子设备

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