WO2021195857A1 - 电池和应用所述电池的电子装置 - Google Patents

电池和应用所述电池的电子装置 Download PDF

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Publication number
WO2021195857A1
WO2021195857A1 PCT/CN2020/082123 CN2020082123W WO2021195857A1 WO 2021195857 A1 WO2021195857 A1 WO 2021195857A1 CN 2020082123 W CN2020082123 W CN 2020082123W WO 2021195857 A1 WO2021195857 A1 WO 2021195857A1
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WO
WIPO (PCT)
Prior art keywords
tab
battery
circuit board
protection circuit
electrically connected
Prior art date
Application number
PCT/CN2020/082123
Other languages
English (en)
French (fr)
Inventor
杨书俊
宁顺刚
陈光辉
黄铁军
Original Assignee
东莞新能德科技有限公司
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 东莞新能德科技有限公司 filed Critical 东莞新能德科技有限公司
Priority to PCT/CN2020/082123 priority Critical patent/WO2021195857A1/zh
Priority to CN202090000296.6U priority patent/CN216648528U/zh
Priority to EP20919358.0A priority patent/EP3916872A4/en
Priority to US17/339,852 priority patent/US20210296740A1/en
Publication of WO2021195857A1 publication Critical patent/WO2021195857A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • This application relates to the field of batteries, and in particular to a battery and an electronic device using the battery.
  • lithium-ion batteries are widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers.
  • Electric bicycles and other electric vehicles and large and medium-sized electric equipment such as energy storage facilities have a wide range of application prospects, and they have become the key to solving global problems such as energy crisis and environmental pollution.
  • a battery includes a battery cell and a protective circuit board, the battery cell includes:
  • the battery body The battery body,
  • the first tab is electrically connected to the battery core body and the protection circuit board;
  • a second tab electrically connecting the battery core body and the protection circuit board, and the second tab and the first tab have opposite polarities;
  • the third tab is electrically connected to the battery core body and the protection circuit board, and the third tab has the same polarity as the first tab.
  • the first tab and the third tab are electrically connected to the battery core body independently of each other.
  • the third tab is electrically connected to the battery core body through the first tab.
  • the protection circuit board includes a circuit board body and at least one connector, and each connector is disposed on the circuit board body.
  • the circuit board body is a rigid-flex board, including a rigid board area and a flexible board area connected to the hard board area, the first tab, the second tab, and the The third tab is connected to the hard board area, and the connector is disposed in the soft board area.
  • the battery cell further includes a fourth tab that electrically connects the cell body and the protection circuit board, and the fourth tab has the same polarity as the first tab. .
  • the battery cell further includes a fourth tab that electrically connects the battery core body and the protection circuit board, and the fourth tab and the second tab have the same polarity .
  • the fourth tab and the second tab are electrically connected to the battery core body independently of each other.
  • the fourth tab is electrically connected to the battery core body through the second tab.
  • An electronic device includes any battery as described above.
  • the battery cell is output through the first tab and the third tab with the same polarity, thereby reducing the concentration of heat during the output of the battery core, which is conducive to heat dissipation. out.
  • the first tab and the third tab with the same polarity are respectively electrically connected to the protection circuit board, which facilitates the wiring in the protection circuit board, makes the wiring in the protection circuit board smoother, and effectively reduces factors.
  • the overall impedance of the protection circuit board is increased due to the bending of the local wiring, thereby reducing the temperature rise of the protection circuit board when the battery is used, thereby helping to improve the stability of the battery.
  • FIG. 1 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 3 is a schematic structural diagram of a battery according to an embodiment of the application.
  • FIG. 4 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 5 is a schematic structural diagram of a battery according to an embodiment of the application.
  • FIG. 6 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • the battery 100 includes a battery cell 10 and a protection circuit board 30.
  • the battery core 10 is electrically connected to the protection circuit board 30.
  • the cell 10 includes a cell body 11, a first tab 13, a second tab 15 and a third tab 17.
  • One end of the first tab 13 is electrically connected to the battery core body 11, and the other end is electrically connected to the protection circuit board 30.
  • the second tab 15 and the first tab 13 have opposite polarities, and one end of the second tab 15 is electrically connected to the battery core body 11, and the other end is electrically connected to the protection circuit board 30.
  • the third tab 17 and the first tab 13 have the same polarity, and one end of the third tab 17 is electrically connected to the battery core body 11, and the other end is electrically connected to the protection circuit board 30.
  • the battery core 10 outputs through the first tab 13 and the third tab 17 with the same polarity, thereby reducing the concentration of heat during the output of the battery core 10, which is conducive to the dissipation of heat.
  • the first tab 13 and the third tab 17 with the same polarity are respectively electrically connected to the protection circuit board 30, and the internal circuits of the protection circuit board 30 can be electrically connected to the first tab 13 or the third pole according to needs.
  • the ears 17 are used to reduce wire bending or wire extension due to avoiding device interference, facilitate the wiring in the protection circuit board 30, make the wiring in the protection circuit board 30 smoother, and help reduce the overall impedance of the protection circuit board 30 , Thereby reducing the temperature rise of the protection circuit board 30 when the battery is used.
  • first tab 13 and the third tab 17 are both positive tabs, and the second tab 15 is a negative tab. In other embodiments, both the first tab 13 and the third tab 17 can be negative tabs. In this case, the second tab 15 is a positive tab.
  • the first tab 13 and the third tab 17 are electrically connected to the battery core body 11 independently of each other.
  • first tab 13 and the third tab 17 are spaced apart.
  • second tab 15 is arranged between the first tab 13 and the third tab 17, and is spaced apart from the first tab 13 and the third tab 17, respectively,
  • the wiring of the subsequent protection circuit board 30 is more convenient.
  • the third tab 17 is electrically connected to the battery core body 11 through the first tab 13. Specifically, one end of the first tab 13 is connected to the battery core body 11, and the other end is connected to the protection circuit board 30. One end of the third tab 17 is electrically connected to the first tab 13 and the other end is electrically connected to the protection circuit board 30. In some embodiments, the third tab 17 may be connected to the first tab 13 via a nickel tape or a flexible circuit board.
  • the protection circuit board 30 includes a circuit board body 31 and at least one connector 33.
  • the connector 33 is disposed on the circuit board body 31.
  • the circuit board body 31 is a rigid-flex board, and includes a rigid board area 311 and a flexible board area 313 connected to the hard board area 311.
  • the hard board area 311 and the soft board area 313 are integrally designed.
  • the connector 33 is disposed in the soft board area 313.
  • the hard plate area 311 includes a first input terminal 311a, a second input terminal 311b, and a third input terminal 311c that are spaced apart.
  • the first input end 311a is electrically connected to the first lug 13
  • the second input end 311b is electrically connected to the second lug 15
  • the third input end 311c is electrically connected to the third lug 17. .
  • the circuit board body 31 includes two soft board areas 313 and two connectors 33, and the hard board area 311 is located between the two soft board areas 313.
  • one soft plate area 313 is disposed adjacent to the first tab 13, and the other soft plate area 313 is disposed adjacent to the third tab 17.
  • Each flexible board area 313 is provided with a connector 33.
  • Each of the connectors 33 is electrically connected to the first input terminal 311a or the third input terminal 311c, and each of the connectors 33 is electrically connected to the second input terminal 311b.
  • the rigid board area 311 and the flexible board area 313 are connected by welding, which is lower in cost than a rigid-flex board with an integrated design.
  • the battery cell 10 may further include a fourth tab 19 that electrically connects the cell body 11 and the protection circuit board 30, wherein the fourth tab 19
  • the polarity of the second tab 15 is the same, and the fourth tab 19 and the second tab 15 are electrically connected to the battery core body 11 independently of each other.
  • the battery core 10 outputs through the fourth tab 19 and the second tab 15 with the same polarity, thereby further reducing the concentration of heat during the output of the battery core 10, which is beneficial to the dissipation of heat.
  • the fourth tab 19 and the second tab 15 with the same polarity are respectively electrically connected to the protection circuit board 30, which further facilitates the wiring in the protection circuit board 30, so that when the battery is used The temperature rise of the protection circuit board 30 is further reduced.
  • the fourth tab 19 can be arranged between the first tab 13 and the third tab 17, and is connected to the first tab 13 and the second tab. 15 and the third tab 17 are spaced apart.
  • the fourth tab 19 may also be arranged on a side of the third tab 17 away from the second tab 15.
  • the first tab 13 and the adjacent second tab 15 are electrically connected to the connector 33 adjacent to the first tab 13.
  • the third tab 17 and the adjacent fourth tab 19 are electrically connected to the connector 33 adjacent to the third tab 17, which is more beneficial to protect the wiring in the circuit board 30.
  • the fourth tab 19 is electrically connected to the battery core body 11 through the second tab 15. Specifically, one end of the second tab 15 is connected to the battery core body 11, and the other end is connected to the protection circuit board 30. One end of the fourth tab 19 is electrically connected to the second tab 15 and the other end is electrically connected to the protection circuit board 30. In some embodiments, the fourth tab 19 may be connected to the second tab 15 via a nickel tape or a flexible circuit board.
  • the polarity of the fourth tab 19 may be the same as the polarity of the first tab 13. That is, there may be multiple tabs with the same polarity as the first tab 13. From this, it can be seen that there may be multiple tabs with the same polarity as the second tab 15.
  • the hard board area 311 is folded toward the battery core body 11, and the soft board area 313 is folded toward the hard board area 311 to reduce the overall volume of the battery 100 .
  • the above-mentioned battery 100 is applied to an electronic device (not shown) to supply power to other electronic components of the electronic device.
  • the electronic device can be, but is not limited to, a mobile phone, a computer, an electric toy, an electric car, and the like.

Abstract

一种电池，包括电芯和保护电路板，所述电芯包括电芯本体、第一极耳、第二极耳和第三极耳。所述第一极耳电连接所述电芯本体与所述保护电路板；所述第二极耳电连接所述电芯本体与所述保护电路板，且所述第二极耳与所述第一极耳的极性相反；所述第三极耳电连接所述电芯本体与所述保护电路板，且所述第三极耳与所述第一极耳的极性相同，从而有利于降低在使用时所述电芯和所述保护电路板的温升。本申请还提供一种应用所述电池的电子装置。

Description

电池和应用所述电池的电子装置 技术领域
本申请涉及电池领域，尤其涉及一种电池和应用所述电池的电子装置。
背景技术
目前，由于锂离子电池具有能量密度高、功率密度高、循环使用次数多、存储时间长等优点，在移动电话、数码摄像机和手提电脑等便携式电子设备上得到了广泛使用，并且在电动汽车、电动自行车等电动交通工具及储能设施等大中型电动设备方面有着广泛的应用前景，成为解决能源危机和环境污染等全球性问题的关键。
随着用户对产品性能的不断追求，大家都对电池快速充电、支持更大功率的输出不断的提出新的要求，从而对电池管理电路的高效率与稳定可靠性造成巨大的挑战。当电池管理电路需要承载更大功率时，电芯、元器件的发热将会导致电池过热性能下降、电路可靠性变差甚至损坏的情形，甚至导致安全问题。
发明内容
鉴于上述情况，有必要提供一种高稳定性的电池。还有必要提供一种应用上述电池的电子装置。
一种电池，包括电芯和保护电路板，所述电芯包括：
电芯本体，
第一极耳，电连接所述电芯本体与所述保护电路板；
第二极耳，电连接所述电芯本体与所述保护电路板，且所述第二极耳与所述第一极耳的极性相反；
第三极耳，电连接所述电芯本体与所述保护电路板，且所述第三极耳与所述第一极耳的极性相同。
在本申请一实施例中，所述第一极耳与所述第三极耳相互独立地电连接 所述电芯本体。
在本申请一实施例中，所述第三极耳通过所述第一极耳与所述电芯本体电连接。
在本申请一实施例中，所述保护电路板包括电路板本体以及至少一个连接器，每一连接器设置于所述电路板本体上。
在本申请一实施例中，所述电路板本体为软硬结合板，包括硬板区及连接所述硬板区的软板区，所述第一极耳、所述第二极耳以及所述第三极耳连接所述硬板区，所述连接器设置于所述软板区。
在本申请一实施例中，所述电芯还包括电连接所述电芯本体与所述保护电路板的第四极耳，所述第四极耳与所述第一极耳的极性相同。
在本申请一实施例中，所述电芯还包括电连接所述电芯本体与所述保护电路板的第四极耳，所述第四极耳与所述第二极耳的极性相同。
在本申请一实施例中，所述第四极耳与所述第二极耳相互独立地电连接所述电芯本体。
在本申请一实施例中，所述第四极耳通过所述第二极耳与所述电芯本体电连接。
一种电子装置，包括如上所述任意一种电池。
本申请的电池及应用所述电池的电子装置，其中电芯通过极性相同的第一极耳和第三极耳进行输出，从而降低了电芯在输出时热量的集中，有利于热量的散出。另外，通过极性相同的第一极耳和第三极耳分别和所述保护电路板电连接，便于所述保护电路板内的布线，使保护电路板内的走线更加流畅，有效减少因局部走线弯绕而导致的保护电路板整体阻抗增大，从而降低在使用所述电池时所述保护电路板的温升，进而有利于提高电池的稳定性。
附图说明
图1为本申请一实施例的电池的结构示意图。
图2为本申请一实施例的电池的结构示意图。
图3为本申请一实施例的电池的结构示意图。
图4为本申请一实施例的电池的结构示意图。
图5为本申请一实施例的电池的结构示意图。
图6为本申请一实施例的电池的结构示意图。
主要元件符号说明
电池 100
电芯 10
保护电路板 30
电芯本体 11
第一极耳 13
第二极耳 15
第三极耳 17
电路板本体 31
连接器 33
硬板区 311
软板区 313
第一输入端 311a
第二输入端 311b
第三输入端 311c
第四极耳 19
如下具体实施方式将结合上述附图进一步说明本申请。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而 不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情况下，下述的实施例及实施例中的特征可以相互组合。
请参阅图1，根据本申请的一个实施例，电池100包括电芯10和保护电路板30。其中，所述电芯10与所述保护电路板30电连接。
所述电芯10包括电芯本体11、第一极耳13、第二极耳15和第三极耳17。所述第一极耳13的一端电连接所述电芯本体11，另一端电连接所述保护电路板30。所述第二极耳15与所述第一极耳13的极性相反，且所述第二极耳15的一端电连接所述电芯本体11，另一端电连接所述保护电路板30。所述第三极耳17与所述第一极耳13的极性相同，且所述第三极耳17的一端电连接所述电芯本体11，另一端电连接所述保护电路板30。所述电芯10通过极性相同的第一极耳13和第三极耳17进行输出，从而降低了电芯10在输出时热量的集中，有利于热量的散出。另外，通过极性相同的第一极耳13和第三极耳17分别和所述保护电路板30电连接，保护电路板30内部线路可根据需要选择电连接第一极耳13或第三极耳17，以减少因避免器件干涉而出现的线路弯绕或线路延长，便于所述保护电路板30内的布线，使保护电路板30内的走线更加流畅，利于降低保护电路板30整体阻抗，从而降低在使用所述电池时所述保护电路板30的温升。
在本实施例中，所述第一极耳13和所述第三极耳17均为正极极耳，所述第二极耳15为负极极耳。而在另一些实施例中，所述第一极耳13和所述第三极耳17均可为负极极耳，此时，所述第二极耳15为正极极耳。
所述第一极耳13和所述第三极耳17相互独立地与所述电芯本体11电连接。
在本实施例中，所述第一极耳13与所述第三极耳17间隔。优选的，所述第二极耳15设置于所述第一极耳13与所述第三极耳17之间，并且分别与所述第一极耳13及所述第三极耳17间隔，更加便于后续保护电路板30的布线。
在一些实施例中，请参阅图2，所述第三极耳17通过所述第一极耳13与所述电芯本体11电连接。具体的，所述第一极耳13一端连接所述电芯本体11，另一端连接所述保护电路板30。所述第三极耳17一端电连接所述第一极耳13，另一端电连接所述保护电路板30。在一些实施例中，所述第三极耳17可通过镍带或者软性电路板与所述第一极耳13连接。
所述保护电路板30包括电路板本体31以及至少一个连接器33。所述连接器33设置于所述电路板本体31上。
在一些实施例中，请参阅图1及图2，所述电路板本体31为软硬结合板，包括硬板区311和连接所述硬板区311的软板区313。所述硬板区311与所述软板区313为一体设计。所述连接器33设置于所述软板区313。
所述硬板区311包括间隔的第一输入端311a、第二输入端311b和第三输入端311c。所述第一输入端311a电连接所述第一极耳13，所述第二输入端311b电连接所述第二极耳15，所述第三输入端311c电连接所述第三极耳17。
本实施例中，所述电路板本体31包括两个软板区313和两个连接器33，所述硬板区311位于两个所述软板区313之间。优选的，一个软板区313邻近所述第一极耳13设置，另一软板区313邻近所述第三极耳17设置。每一个软板区313上设置一所述连接器33。每一所述连接器33电连接所述第一输入端311a或所述第三输入端311c，且每一所述连接器33电连接所述第二输入端311b。
在一些实施例中，请参阅图3，所述硬板区311与所述软板区313通过焊接的方式连接，相较于一体设计的软硬结合板成本更低。
在一些实施例中，请参阅图4，所述电芯10还可包括电连接所述电芯本 体11与所述保护电路板30的第四极耳19，其中，所述第四极耳19与所述第二极耳15的极性相同，且所述第四极耳19和所述第二极耳15相互独立地与所述电芯本体11电连接。所述电芯10通过极性相同的第四极耳19和所述第二极耳15进行输出，从而进一步地降低了电芯10在输出时热量的集中，有利于热量的散出。另外，通过极性相同的第四极耳19和所述第二极耳15分别和所述保护电路板30电连接，进一步便于所述保护电路板30内的布线，从而在使用所述电池时进一步降低所述保护电路板30的温升。
如图4所示，所述第四极耳19可设置于所述第一极耳13和所述第三极耳17之间，并与所述第一极耳13、所述第二极耳15和所述第三极耳17间隔。所述第四极耳19也可设置于所述第三极耳17远离所述第二极耳15的一侧。优选的，所述第一极耳13及相邻的第二极耳15电连接邻近所述第一极耳13的连接器33。第三极耳17及相邻的第四极耳19电连接邻近所述第三极耳17的连接器33，从而更加有利于保护电路板30内的布线。
在一些实施例中，请参阅图5，所述第四极耳19通过所述第二极耳15与所述电芯本体11电连接。具体的，所述第二极耳15一端连接所述电芯本体11，另一端连接所述保护电路板30。所述第四极耳19一端电连接所述第二极耳15，另一端电连接所述保护电路板30。在一些实施例中，所述第四极耳19可通过镍带或者软性电路板与所述第二极耳15连接。
在一些实施例中，所述第四极耳19的极性可与第一极耳13的极性相同。即与第一极耳13极性相同的极耳可以为多个。由此可知，与第二极耳15极性相同的极耳也可以为多个。
在本实施例中，请参阅图6，所述硬板区311朝所述电芯本体11折叠，所述软板区313朝向所述硬板区311折叠，以缩减所述电池100的整体体积。
将上述电池100应用于电子装置(图未示)中以对所述电子装置的其他电子元件进行供电。所述电子装置可为但不仅限于手机、电脑、电动玩具、电动车等。
另外，对于本领域的普通技术人员来说，可以根据本申请的技术构思做 出其它各种相应的改变与变形，而所有这些改变与变形都应属于本申请的保护范围。

Claims (10)

  1. 一种电池，包括电芯和保护电路板，所述电芯包括：
    电芯本体，
    第一极耳，电连接所述电芯本体与所述保护电路板；
    第二极耳，电连接所述电芯本体与所述保护电路板，且所述第二极耳与所述第一极耳的极性相反；
    其特征在于，所述电芯还包括：
    第三极耳，电连接所述电芯本体与所述保护电路板，且所述第三极耳与所述第一极耳的极性相同。
  2. 如权利要求1所述的电池，其特征在于，所述第一极耳与所述第三极耳相互独立地电连接所述电芯本体。
  3. 如权利要求1所述的电池，其特征在于，所述第三极耳通过所述第一极耳与所述电芯本体电连接。
  4. 如权利要求1所述的电池，其特征在于，所述保护电路板包括电路板本体以及至少一个连接器，每一连接器设置于所述电路板本体上。
  5. 如权利要求4所述的电池，其特征在于，所述电路板本体为软硬结合板，包括硬板区及连接所述硬板区的软板区，所述第一极耳、所述第二极耳以及所述第三极耳连接所述硬板区，所述连接器设置于所述软板区。
  6. 如权利要求1所述的电池，其特征在于，所述电芯还包括电连接所述电芯本体与所述保护电路板的第四极耳，所述第四极耳与所述第一极耳的极性相同。
  7. 如权利要求1所述的电池，其特征在于，所述电芯还包括电连接所述电芯本体与所述保护电路板的第四极耳，所述第四极耳与所述第二极耳的极性相同。
  8. 如权利要求7所述的电池，其特征在于，所述第四极耳与所述第二极耳相互独立地电连接所述电芯本体。
  9. 如权利要求7所述的电池，其特征在于，所述第四极耳通过所述第二极耳与所述电芯本体电连接。
  10. 一种电子装置，其特征在于，包括如权利要求1-9任意一项所述的电池。
PCT/CN2020/082123 2020-03-11 2020-03-30 电池和应用所述电池的电子装置 WO2021195857A1 (zh)

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