WO2017201737A1 - 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
WO2017201737A1
WO2017201737A1 PCT/CN2016/083694 CN2016083694W WO2017201737A1 WO 2017201737 A1 WO2017201737 A1 WO 2017201737A1 CN 2016083694 W CN2016083694 W CN 2016083694W WO 2017201737 A1 WO2017201737 A1 WO 2017201737A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
circuit
charging
mobile terminal
protection
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/083694
Other languages
English (en)
Chinese (zh)
Inventor
田晨
张加亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
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 Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to PCT/CN2016/083694 priority Critical patent/WO2017201737A1/fr
Priority to CN201680001774.3A priority patent/CN106471700B/zh
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 WO2017201737A1 publication Critical patent/WO2017201737A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • 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
    • H02J7/61—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overcharge
    • 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

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; One end of the battery fuel gauge is connected to the first position of the charging and discharging circuit, and the other end of the battery fuel gauge is connected to the second position of the charging and discharging circuit, and the first position is located at the battery protection In the board, the second position is located in a main board of the mobile terminal, and the first position and the second position are connected by wires, and the battery is charged and discharged through the charging and discharging circuit. And the battery fuel gauge detects a voltage drop generated by the impedance of the wire, and determines the amount of power of the battery according to the voltage drop.
  • 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, such as the battery described in the second aspect, and a main board, wherein the battery is connected to the charging interface.
  • the battery protection board further includes: a temperature detecting circuit for detecting a temperature of the battery; the battery fuel gauge is connected to the temperature detecting circuit, and the battery fuel gauge is specifically used for : according to the temperature detected by the temperature detecting circuit, and the temperature and the guide Corresponding relationship of the impedance (or resistance) of the line, determining the impedance of the wire (ie, determining the impedance of the wire at a temperature detected by the temperature detecting circuit); according to the impedance of the wire, and the pressure generated by the impedance Down, determining the current flowing through the wire; determining the amount of power of the battery based on the current flowing through the wire.
  • a temperature detecting circuit for detecting a temperature of the battery
  • the battery fuel gauge is connected to the temperature detecting circuit, and the battery fuel gauge is specifically used for : according to the temperature detected by the temperature detecting circuit, and the temperature and the guide Corresponding relationship of the impedance (or resistance) of the line, determining the impedance of the wire (i
  • 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 battery fuel gauge is coupled to the second location by a connector between the battery protection panel and the motherboard.
  • the protection circuit is a first protection circuit in the battery protection board, and the battery protection board further includes: a second protection circuit, the second protection circuit, and the charge and discharge circuit Connected, overvoltage and/or overcurrent protection of the charge and discharge circuit by a fuse.
  • 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 fuel gauge may include two current detecting points, one end of the battery fuel gauge may be a first current detecting point of the battery fuel gauge, and the other end of the battery fuel gauge may be a second current detecting point of the battery fuel gauge .
  • the battery protection board provided by the present application can not only reduce the number of devices in the battery protection board, but also save the layout area and the cost of the battery protection board, reduce the failure rate of the battery protection board, and reduce the heat generation of the battery protection board.
  • 1 is a schematic circuit 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 diagram showing the connection relationship between the battery protection board and the main board according to the 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 structural view of a battery according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • 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 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 integration scheme can be improved by using the scheme of FIG. 1.
  • the current-sense resistor 14 generally has a small area and generates a large amount of heat, the heat generation phenomenon of the battery protection board 10 may be further aggravated. Therefore, the resistor for current detection may be considered. The area is increased to reduce the amount of heat generated by the battery protection panel 10.
  • the impedance of the wire in the charge and discharge circuit can be used instead of the current-sense resistor, and the area of the wire is larger than the area of the special resistance element, so that the heat generated by the resistor can be better dissipated.
  • the battery protection board is generally packaged in a small-sized battery.
  • the area of the protection board itself is small. If the resistance of a certain wire of the current loop in the battery protection board is used instead of the current-sense resistor The area of the resistor may still be relatively small, and the heat generated by it may not be dissipated in time.
  • a current detecting point of the battery fuel gauge can be connected to the current loop of the battery protection board, and the battery fuel gauge is additionally A current detecting point is connected to the current loop of the main board through a connector between the battery protection board and the main board of the mobile terminal (it is to be noted that the broken line in FIG. 2 indicates the current detecting line of the battery fuel gauge).
  • the impedance of the intercepted wire can be calculated or simulated. After the impedance of the wire is obtained, the battery protection board and the main board can be connected together, and then an external power source is used to add a constant current to the current loop to calibrate the impedance of the wire, thereby ensuring the battery fuel gauge. Check flow accuracy.
  • the impedance of the wire may change as the temperature of the battery or battery protection plate changes.
  • a temperature detecting circuit may be added to the battery protection plate 10.
  • the battery protection board may further include: a temperature detecting circuit 18 for detecting the temperature of the battery or the battery protection board; the battery fuel gauge 15 may be connected to the temperature detecting circuit 18, and the battery fuel gauge 15 may be specifically used for: According to the temperature detected by the temperature detecting circuit 18, and the correspondence between the temperature and the impedance of the wire (the correspondence may be stored in advance in the memory of the battery protection board 10), determining the impedance of the wire at the current temperature; The current flowing through the wire is sensed based on the impedance of the wire at the current temperature; the amount of electricity is determined based on the current flowing through the wire.
  • a temperature detecting circuit 18 for detecting the temperature of the battery or the battery protection board
  • the battery fuel gauge 15 may be connected to the temperature detecting circuit 18, and the battery fuel gauge 15 may be specifically used for: According to the temperature detected by the temperature detecting circuit 18, and the correspondence between the temperature and the impedance of the wire (the correspondence may be stored in advance in the memory of the battery protection board 10), determining the imped
  • the temperature detection circuit can be integrated in a battery fuel gauge. In some embodiments, the temperature detection circuit can be provided separately from the battery fuel gauge.
  • the temperature sensing circuit can detect the temperature through the thermistor.
  • the thermistor may be a Negative Temperature Coefficient (NTC) resistor or a Possitive Temperature Coefficient (PTC) resistor.
  • NTC Negative Temperature Coefficient
  • PTC Possitive 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 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 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, the second protection circuit 21 is located at the The fuse between the 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 4.
  • the battery and the mobile terminal of the embodiment of the present invention will be described in detail below with reference to FIGS. 5 and 6.
  • Fig. 5 is a schematic structural view of a battery according to an embodiment of the present invention.
  • the battery 500 of Figure 5 includes:
  • a battery protection board 520 is connected to the battery core 510.
  • the battery protection board 520 in FIG. 5 can adopt the battery protection board described above, and to avoid repetition, it will not be described in detail herein.
  • FIG. 6 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal 600 of FIG. 6 includes:
  • a battery 500 is connected to the charging interface 610.
  • the mobile terminal 600 may 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 normal charging mode.
  • the charging current is greater than the normal charging mode.
  • the mobile terminal 600 performs bidirectional communication with the adapter through the charging interface 610.
  • 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. Based on such understanding, the technical solution of the present invention is essentially or a part contributing to the prior art or a part of the technical solution.
  • the points may be embodied in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform various embodiments of the present invention All or part of the steps of the method.
  • 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)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

Des modes de réalisation de la présente invention concernent une carte de protection de batterie, une batterie et un terminal mobile. La carte de protection de batterie comprend : un circuit de protection connecté à un circuit de charge/décharge dans une batterie dans un terminal mobile, le circuit de protection est utilisé pour commander l'activation et la désactivation du circuit de charge/décharge ; et une jauge de niveau de batterie, une extrémité de la jauge de niveau de batterie étant connectée à une première position du circuit de charge/décharge, l'autre extrémité de la jauge de niveau de batterie est connectée à une deuxième position du circuit de charge/décharge, la première position est située dans la carte de protection de batterie, la deuxième position est située dans une carte mère du terminal mobile, la première position est connectée à la deuxième position par l'intermédiaire d'un conducteur, pendant le processus dans lequel la batterie est chargée ou déchargée par l'intermédiaire du circuit de charge/décharge, et la jauge de niveau de batterie détecte une chute de tension produite par l'impédance du conducteur et détermine le niveau de puissance de la batterie sur la base de la chute de tension. Les modes de réalisation de la présente invention non seulement réduisent le nombre de composants dans la carte de protection de batterie, de façon à réduire la surface pour la disposition de la carte et le coût de la carte de protection de batterie, et réduire le taux de panne de la carte de protection de batterie, mais réduisent également la chaleur produite par la carte de protection de batterie.
PCT/CN2016/083694 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile Ceased WO2017201737A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/CN2016/083694 WO2017201737A1 (fr) 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile
CN201680001774.3A CN106471700B (zh) 2016-05-27 2016-05-27 电池保护板、电池和移动终端
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/CN2016/083694 WO2017201737A1 (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/CN2016/083695 Continuation-In-Part WO2017201738A1 (fr) 2016-05-27 2016-05-27 Carte de protection de pile, pile et terminal mobile

Related Child 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

Publications (1)

Publication Number Publication Date
WO2017201737A1 true WO2017201737A1 (fr) 2017-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/083694 Ceased WO2017201737A1 (fr) 2016-05-27 2016-05-27 Carte de protection de batterie, batterie et terminal mobile

Country Status (2)

Country Link
CN (1) CN106471700B (fr)
WO (1) WO2017201737A1 (fr)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN111082493A (zh) * 2019-12-31 2020-04-28 Oppo广东移动通信有限公司 终端设备
CN112671061A (zh) * 2020-12-15 2021-04-16 维沃移动通信有限公司 电池保护板控制系统及终端
CN112986879A (zh) * 2019-12-16 2021-06-18 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
CN113383478A (zh) * 2019-04-01 2021-09-10 Oppo广东移动通信有限公司 充电电路、充电方法、终端及计算机存储介质

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CN115528756A (zh) * 2021-06-24 2022-12-27 北京小米移动软件有限公司 储电设备及终端
CN113708022B (zh) * 2021-08-21 2023-09-22 深圳市日升质电子科技有限公司 一种具有充电保护功能的锂电池

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113383478A (zh) * 2019-04-01 2021-09-10 Oppo广东移动通信有限公司 充电电路、充电方法、终端及计算机存储介质
US12009680B2 (en) 2019-04-01 2024-06-11 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Charging circuit, charging method, and terminal
CN112986879A (zh) * 2019-12-16 2021-06-18 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
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
CN111082493A (zh) * 2019-12-31 2020-04-28 Oppo广东移动通信有限公司 终端设备
CN111082493B (zh) * 2019-12-31 2024-05-24 Oppo广东移动通信有限公司 终端设备
CN112671061A (zh) * 2020-12-15 2021-04-16 维沃移动通信有限公司 电池保护板控制系统及终端

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Publication number Publication date
CN106471700B (zh) 2020-03-06
CN106471700A (zh) 2017-03-01

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