WO2021102973A1 - 电池 - Google Patents

电池 Download PDF

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Publication number
WO2021102973A1
WO2021102973A1 PCT/CN2019/122133 CN2019122133W WO2021102973A1 WO 2021102973 A1 WO2021102973 A1 WO 2021102973A1 CN 2019122133 W CN2019122133 W CN 2019122133W WO 2021102973 A1 WO2021102973 A1 WO 2021102973A1
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WO
WIPO (PCT)
Prior art keywords
battery
output terminal
pole
battery according
electrical connection
Prior art date
Application number
PCT/CN2019/122133
Other languages
English (en)
French (fr)
Inventor
韦天华
黄小钊
王华强
李超鹏
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 CN201980089150.5A priority Critical patent/CN113302776A/zh
Priority to PCT/CN2019/122133 priority patent/WO2021102973A1/zh
Publication of WO2021102973A1 publication Critical patent/WO2021102973A1/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • 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.
  • a battery including:
  • the battery body includes a casing and a pole
  • the casing includes a top wall, a bottom wall, and a side wall connecting the top wall and the bottom wall
  • the side wall includes a curved surface area and is connected to the curved surface area In the planar area of, the pole is penetrated in the planar area, and the pole is insulated from the housing;
  • the electrical connection structure includes a first input end and a first output end electrically connected to the first input end, the first input end is electrically connected to the pole, and the first output end is along the plane where the side wall is located Is provided, and the first output terminal is insulated from the housing.
  • the electrical connection structure further includes a flexible circuit board, and the first input terminal is connected to the first output terminal through the flexible circuit board.
  • the first output terminal is an electronic wire
  • the electronic wire is arranged along the plane where the side wall is located, and one end of the electronic wire is connected to the flexible circuit board, and the other end extends The top wall.
  • the first output terminal is a pad, a gold finger, a conductive sheet, or a connector, and the first output terminal is disposed in an area corresponding to the side wall of the flexible circuit board.
  • the flexible circuit board includes a first part and a second part connected to the first part.
  • the first part is mounted on the housing, and the second part is located along the side wall.
  • the first output end is provided in the area where the second part protrudes from the top wall.
  • the electrical connection structure further includes a metal sheet, the first input end is connected to the first output end through the metal sheet, and the metal sheet is along the plane where the side wall is located.
  • the top wall is arranged and protruded, and the metal sheet is insulated from the housing, and the first output terminal is located in the area where the metal sheet protrudes from the top wall.
  • the first output terminal is any one of a pad, a conductive sheet, an electronic wire, and a connector.
  • the electrical connection structure further includes a second input terminal and a second output terminal electrically connected to the second input terminal, and the second input terminal is electrically connected to the housing.
  • the electrical connection structure further includes a flexible circuit board or a metal sheet, and the second input terminal is connected to the second output terminal through the flexible circuit board or the metal sheet.
  • the second output terminal is an electronic wire, a pad, a gold finger, a conductive sheet, or a connector.
  • the first input end is conductive foam, which is bonded to the pole post while being electrically connected to the pole; and/or the second input end is conductive foam, To be bonded to and electrically connected to the housing.
  • the battery further includes a packaging film that encapsulates the battery main body and the electrical connection structure; wherein, the first output terminal and the second output terminal are separated from the The packaging film is exposed.
  • the battery further includes a packaging film that encapsulates the battery body and the electrical connection structure; wherein the first output terminal is exposed from the packaging film.
  • the packaging film is integrally formed with the battery body and the flexible circuit board by injection molding.
  • the battery includes a plurality of battery main bodies, the plurality of battery main bodies are stacked and encapsulated by the packaging film, and the plurality of battery main bodies are connected in series or in parallel.
  • the pole since the pole is arranged in the plane area, the pole is prevented from occupying the space at the end of the battery, which is beneficial to the energy density of the battery, and the first input terminal is located in the plane area, It is beneficial to improve the effectiveness of the electrical connection of the first input terminal, thereby improving the reliability of the battery assembly.
  • the first output terminal is arranged along the direction of the side wall, which also does not occupy the space at the end of the battery, which is further conducive to improving the energy density of the battery.
  • Fig. 1 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 2 is a schematic diagram of the structure of a battery main body according to an embodiment of the application.
  • FIG. 3 is a schematic diagram of the structure of a battery main body according to an embodiment of the application.
  • FIG. 4 is a schematic cross-sectional view of a battery main body according to an embodiment of the application.
  • FIG. 5 is a partial enlarged schematic diagram of the battery main body shown in FIG. 4.
  • FIG. 6 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 7 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 8 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 9 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 10 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 11 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 12 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 13 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 14 is a schematic structural diagram of a battery according to an embodiment of the application.
  • FIG. 15 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 16 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 17 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 18 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 19 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 20 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 21 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 22 is a schematic structural diagram of a battery according to an embodiment of the application.
  • FIG. 23 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 24 is a schematic structural diagram of a battery according to an embodiment of the application.
  • FIG. 25 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 26 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • FIG. 27 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 28 is an exploded schematic diagram of a battery according to an embodiment of the application.
  • FIG. 29 is a schematic diagram of the structure of a battery according to an embodiment of the application.
  • Battery main body 10 Electrical connection structure 20 shell 11 Pole 12 Top wall 111 Bottom wall 113 Sidewall 115 Arc area 116 Plane area 117 First pole 121 Second pole 125
  • the battery 100 includes a battery main body 10 and an electrical connection structure 20.
  • the battery body 10 is a button battery.
  • the battery main body 10 includes a casing 11 and a pole 12.
  • the housing 11 is made of conductive material, such as metal or alloy.
  • the housing 11 includes a top wall 111, a bottom wall 113, and a side wall 115 connecting the top wall 111 and the bottom wall 113.
  • the side wall 115 includes an arc-shaped area 116 and a plane area 117 connected to the arc-shaped area 116.
  • the pole 12 is made of conductive material, such as metal or alloy.
  • the pole 12 is disposed on the plane area 117, and the pole 12 is insulated from the plane area 117. Wherein, the pole 12 is arranged on the plane area 117, which avoids the problem of increasing the thickness of the battery caused by placing the pole on the top of the battery, thereby improving the space utilization of the battery.
  • the arc-shaped area 116 corresponds to a partially arc-shaped side wall of a cylinder.
  • the distance D1 from other positions of the plane area 117 to the central axis of the cylinder is less than the distance D1 from the arc-shaped area 116 to the central axis of the cylinder The distance D2.
  • the ratio of D1 to D2 is 4:5-9:10, and the pole 12 is located in the circumscribed circle corresponding to the plane area 117, thereby further improving the utilization of the internal space of the electronic device.
  • the height H of the pole 12 protruding in a direction away from the center of the housing 11 compared to the plane area 117 is 0.3mm-10mm , In order to reduce the volume while facilitating connection with other components.
  • the pole 12 includes a first pole portion 121 and a second pole portion 125.
  • the first pole portion 121 is substantially T-shaped, and includes a first connecting pole 122 and a first protrusion 123 extending outward from a peripheral edge of one end of the first connecting pole 122.
  • the second pole portion 125 is substantially T-shaped, and includes a second connecting pole 126 and a second protruding portion 127 extending outward from the periphery of one end of the second connecting pole 126.
  • An end of the second connecting column 126 away from the second protrusion 127 is provided with a slot 128.
  • the first connecting post 122 is inserted into the card slot 128 to be engaged to form an I-shaped pole 12.
  • the plane area 117 is provided with a penetrating mounting hole 118, the first connecting post 122 is engaged with the second connecting post 126 and passing through the mounting hole 118, and the first protrusion 123 is located in the In the housing 11, the second protrusion 127 is located on the housing 11 so as to be limited to two sides of the mounting hole 118.
  • the battery main body 10 further includes an insulating member 15, and the insulating member 15 is disposed between the casing 11 and the pole 12 to insulate the casing 11 and the pole 12.
  • the insulating member 15 may be a separate design from the housing 11 and the pole 12.
  • the insulating member 15 may be combined with the housing 11 or the pole 12, for example, integrally molded on the housing 11 or the pole 12 by injection molding.
  • the insulating member 15 may be, but is not limited to, a polymer material, such as nylon, PFA (copolymer of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene) and other plastics or rubber.
  • the battery body 10 further includes a battery core 17, and the casing 11 and the pole 12 cooperate to encapsulate the battery core 17.
  • the battery cell 17 may be a stacked battery cell or a wound battery cell.
  • the battery core 17 includes a battery core body 171 and a first tab 173 and a second tab 175 respectively connected to the battery core body 171.
  • the first pole 173 and the second pole 175 have opposite polarities.
  • the first tab 173 is electrically connected to the cell main body 171 and the housing 11, and the second tab 175 is electrically connected to the cell main body 171 and the pole 12.
  • the casing 11 serves as a negative electrode, and the pole is a positive pole.
  • the housing 11 acts as a positive pole, and the pole is a negative pole.
  • the sidewall 115 includes an arc-shaped area 116 and a flat area 117.
  • the sidewall 115 includes two arc-shaped areas 116 and two flat areas 117, the arc-shaped areas 116 and the flat areas 117 are alternately arranged, and the two flat areas District 117 is opposite.
  • the provision of the plane area 117 improves the energy density, and at the same time facilitates the positioning of the battery 100 during installation, and at the same time facilitates the stability of the arrangement of the pole 12.
  • the electrical connection structure 20 includes a first input terminal 21 and a first output terminal 23 electrically connected to the first input terminal 21.
  • the first input terminal 21 is electrically connected to the pole 12, the first output terminal 23 is arranged along the direction of the side wall, and the first input terminal 21 and the first output terminal 23 are connected to the The housing 11 is insulated between.
  • the pole 12 since the pole 12 is disposed in the plane area 117, the pole is prevented from occupying the space at the end of the battery, thereby facilitating the energy density of the battery, and the first input terminal 21 is located on the plane.
  • the area 117 is beneficial to improve the effectiveness of the electrical connection of the first input terminal 21, thereby improving the reliability of the battery 100.
  • the first output terminal 23 is arranged along the direction of the side wall, which also does not occupy the space at the end of the battery, which is further conducive to improving the energy density of the battery.
  • first input terminal 21 and the first output terminal 23 may be spaced apart from the housing 11 to avoid short circuits.
  • an insulating layer 30 may be further provided between the first input terminal 21 and the housing 11 and between the first output terminal 23 and the housing 11 to avoid short circuits.
  • the electrical connection structure 20 further includes a second input terminal 25 and a second output terminal 27 electrically connected to the second input terminal 25.
  • the second input terminal 25 is electrically connected to the housing 11.
  • the battery 100 may further include a packaging film 40 that encapsulates the electrical connection structure 20 and the battery main body 10, wherein the first output terminal 23 and the second output terminal 27 are separated from the The packaging film 40 is exposed.
  • the packaging film 40 may be, but is not limited to, a heat-shrinkable film, and the heat-shrinkable film shrinks and closely adheres to the battery body 10 and the electrical connection structure 20 after being heated.
  • the electrical connection structure 20 may further include a flexible circuit board 29, and the first input terminal 21 is connected to the first output terminal 23 through the flexible circuit board 29.
  • the packaging film 40 can encapsulate the flexible circuit board 29.
  • the side wall 115 includes two arc-shaped areas 116 and two flat areas 117, and the two flat areas 117 are arranged substantially in parallel.
  • the pole 12 is disposed on a plane area 117.
  • the flexible circuit board 29 is arranged along an arc-shaped area 116, and one end of the flexible circuit board 29 is connected to the pole 12, and the other end is connected to a plane area 117 where the pole 12 is not provided.
  • the first output terminal 23 and the second output terminal 27 are electronic wires respectively, and are connected to the area of the flexible circuit board 29 corresponding to the arc-shaped area 116, so that the first output terminal 23 and the second output terminal 27 are connected to each other.
  • Each electronic wire is arranged along the direction of the side wall 115, and one end away from the flexible circuit board 29 extends out of the top wall 111 and extends out of the packaging film 40.
  • the flexible circuit board 29 is connected to the pole 12 to realize the electrical connection between the first output terminal 23 and the first input terminal 21, so The flexible circuit board 29 is connected to the top wall to realize the electrical connection between the second output terminal 27 and the second input terminal 25.
  • the first output terminal 23 and the second output terminal 27 are respectively electronic wires, and are arranged in parallel along the direction of the plane area 117 provided with the pole 12, and each electronic wire is away from the flexible circuit board 29.
  • One end protrudes from the top wall 111 and protrudes from the packaging film 40.
  • the flexible circuit board 29 is arranged corresponding to the plane area 117 provided with the pole 12, and the second input terminal 25 is connected to the plane area 117 provided with the pole 12.
  • the first output terminal 23 and the second output terminal 27 are respectively electronic wires, and extend out of the top wall 111 along the plane area 117 on which the pole 12 is arranged, and extend out of the packaging film 40.
  • the first output terminal 23 and the second output terminal 27 may also be one of a connector, a gold finger, a pad, or a conductive sheet.
  • the first output terminal 23 and the second output terminal 27 are disposed in the area corresponding to the flexible circuit board 29 and the side wall 115.
  • the packaging film 40 is provided with an opening 41 to expose the first output terminal 23 and the second output terminal 27.
  • the first output terminal 23 and the second output terminal 27 are arranged corresponding to the plane area 117.
  • the flexible circuit board 29 includes a first part 291 and a second part 293 connected to the first part 291.
  • the first part 291 is mounted on the housing 11 and is encapsulated by the packaging film 40, and the second part 293 extends from the top wall 111 along the plane where the side wall 115 is located, and extends from the packaging film 40 Reach out.
  • the first output terminal 23 and the second output terminal 27 are disposed on the second part 293 of the flexible circuit board 29 exposed outside the packaging film 40.
  • the second portion 293 extends from the top wall 111 from the plane area 117.
  • the electrical connection structure 20 may connect the first output terminal 23 and the first input terminal 21 through a metal sheet 28a, and the metal sheet 28a extends along the The plane area 117 is disposed and protrudes from the top wall 111 so as to protrude from the packaging film 40.
  • the metal sheet 28a is insulated from the housing 11.
  • the first output terminal 23 is located in an area where the metal sheet 28 a is exposed to the packaging film 40.
  • the second output terminal 27 and the second input terminal 25 can be connected by a metal sheet 28 b, and the second output terminal 27 is exposed from the packaging film 40.
  • the second output terminal 27 and the second input terminal 25 may also be connected through a flexible circuit board 29a.
  • the flexible circuit board 29a is arranged corresponding to the plane area 117 where the pole 12 is not provided, and the second input terminal 25 is electrically connected to the plane area 117.
  • the packaging film 40 encapsulates the flexible circuit board 29 a, and the second output terminal 27 extends from the packaging film 40.
  • the first input terminal 21 and the second input terminal 25 are made of conductive materials.
  • the first input terminal 21 may be conductive foam, so as to be bonded to the pole 12 while being electrically connected to the pole 12;
  • the second input terminal 25 may be Conductive foam is used to bond with and electrically connect to the shell 11.
  • the packaging film 40 may also be integrally formed with the battery body 10 and the electrical connection structure 20 by injection molding, so that the packaging film 40 not only covers the battery body 10 and the electrical connection structure.
  • the outer side of the connection structure 20 is also filled in the gap between the battery body 10 and the electrical connection structure 20 (for example, the gap between the first output terminal 23 and the housing 11), which improves the insulation effect.
  • the anti-drop ability of the battery 100 is improved, thereby further ensuring the stability of the electrical connection. As shown in FIG.
  • the battery 100 may further include a detachable packaging film to cover the area of the battery body 10 that is not encapsulated by the packaging film 40 by injection molding.
  • the packaging film 40 is integrally molded on the entire battery body 10 by injection molding, and covers the electrical connection structure 20 except for the first output terminal 23 and the second output terminal 27. area.
  • the battery 100 may include a plurality of battery main bodies 10, and the plurality of battery main bodies 10 are arranged in series or in parallel.

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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)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池，包括电池主体及电连接结构，所述电池主体包括外壳与极柱，所述外壳包括顶壁、底壁以及连接所述顶壁与所述底壁的侧壁，所述侧壁包括弧面区及与所述弧面区相接的平面区，所述极柱穿设于所述平面区，且所述极柱与所述外壳之间绝缘；所述电连接结构包括第一输入端及电连接所述第一输入端的第一输出端，所述第一输入端电连接所述极柱，所述第一输出端沿所述侧壁所在的平面设置，且所述第一输出端与所述外壳之间绝缘。所述电池结构有利于提高电池的能量密度以及电连接的稳固性。

Description

电池 技术领域
本申请涉及电池领域。
背景技术
随着电子科技的日益进步，市场上出现的便携式电子装置也越来越多，且为了携带方便，这些便携式电子装置的外形也越来越轻薄，为了符合外形轻薄的要求，越来越多便携式电子装置选择使用纽扣电池作为电力的供应来源。然而，目前的纽扣电池在电连接外接电子元件/设备时，其电连接的可靠性较差。
发明内容
鉴于上述情况，有必要提供一种能够提高电池能量密度且可靠性更高的电池。
一种电池，包括：
电池主体，包括外壳与极柱，所述外壳包括顶壁、底壁以及连接所述顶壁与所述底壁的侧壁，所述侧壁包括弧面区及与所述弧面区相接的平面区，所述极柱穿设于所述平面区，且所述极柱与所述外壳之间绝缘；
电连接结构，包括第一输入端及电连接所述第一输入端的第一输出端，所述第一输入端电连接所述极柱，所述第一输出端沿所述侧壁所在的平面设置，且所述第一输出端与所述外壳之间绝缘。
在本申请一实施例中，所述电连接结构还包括柔性电路板，所述第一输入端通过所述柔性电路板与所述第一输出端连接。
在本申请一实施例中，所述第一输出端为电子线，所述电子线沿所述侧壁所在的平面设置，且所述电子线的一端连接所述柔性电路板，另一端伸出所述顶壁。
在本申请一实施例中，所述第一输出端为焊盘、金手指、导电片或连接器，所述第一输出端设置于所述柔性电路板与所述侧壁对应的区域。
在本申请一实施例中，所述柔性电路板包括第一部分及与所述第一部分相接的第二部分，所述第一部分安装于所述外壳，所述第二部分沿所述侧壁所在的平面设置并伸出所述顶壁，所述第一输出端设置于所述第二部分从所述顶壁伸出的区域。
在本申请一实施例中，所述电连接结构还包括金属片，所述第一输入端通过所述金属片与所述第一输出端连接，所述金属片沿所述侧壁所在的平面设置并伸出所述顶壁，且所述金属片与外壳之间绝缘，所述第一输出端位于所述金属片从所述顶壁伸出的区域。
在本申请一实施例中，所述第一输出端为焊盘、导电片、电子线及连接器中的任意一种。
在本申请一实施例中，所述电连接结构还包括第二输入端及电连接所述第二输入端的第二输出端，所述第二输入端电连接所述外壳。
在本申请一实施例中，所述电连接结构还包括柔性电路板或金属片，所述第二输入端通过所述柔性电路板或所述金属片与所述第二输出端连接。
在本申请一实施例中，所述第二输出端为电子线、焊盘、金手指、导电片或连接器。
在本申请一实施例中，所述第一输入端为导电泡棉，以粘结于所述极柱的同时电连接所述极柱；以及/或所述第二输入端为导电泡棉，以与所述外壳粘结并电连接。
在本申请一实施例中，所述电池还包括封装膜，所述封装膜封装所述电池主体及所述电连接结构；其中，所述第一输出端及所述第二输出端从所述封装膜露出。
在本申请一实施例中，所述电池还包括封装膜，所述封装膜封装所述电池主体及所述电连接结构；其中，所述第一输出端从所述封装膜露出。
在本申请一实施例中，所述封装膜通过注塑与所述电池主体及所述柔性 电路板一体成型。
在本申请一实施例中，所述电池包括多个电池主体，多个所述电池主体层叠设置并被所述封装膜封装，多个所述电池主体之间串连或并联。
在本申请中，由于所述极柱设置于所述平面区，避免了极柱占用电池端部的空间，从而有利于电池的能量密度，而所述第一输入端位于所述平面区，有利于提高第一输入端电连接的有效性，进而提高所述电池组件的可靠性。另外，所述第一输出端沿所述侧壁所在方向设置，同样不占用电池端部的空间，进一步有利于提高电池的能量密度。
附图说明
图1为本申请一实施例的电池的分解示意图。
图2为本申请一实施例的电池主体的结构示意图。
图3为本申请一实施例的电池主体的结构示意图。
图4为本申请一实施例的电池主体的剖面示意图。
图5为图4所述的电池主体的局部放大示意图。
图6为本申请一实施例的电池的结构示意图。
图7为本申请一实施例的电池的结构示意图。
图8为本申请一实施例的电池的分解示意图。
图9为本申请一实施例的电池的分解示意图。
图10为本申请一实施例的电池的结构示意图。
图11为本申请一实施例的电池的分解示意图。
图12为本申请一实施例的电池的结构示意图。
图13为本申请一实施例的电池的分解示意图。
图14为本申请一实施例的电池的结构示意图。
图15为本申请一实施例的电池的分解示意图。
图16为本申请一实施例的电池的结构示意图。
图17为本申请一实施例的电池的分解示意图。
图18为本申请一实施例的电池的结构示意图。
图19为本申请一实施例的电池的分解示意图。
图20为本申请一实施例的电池的结构示意图。
图21为本申请一实施例的电池的分解示意图。
图22为本申请一实施例的电池的结构示意图。
图23为本申请一实施例的电池的分解示意图。
图24为本申请一实施例的电池的结构示意图。
图25为本申请一实施例的电池的分解示意图。
图26为本申请一实施例的电池的结构示意图。
图27为本申请一实施例的电池的分解示意图。
图28为本申请一实施例的电池的分解示意图。
图29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
电池主体 10
电连接结构 20
外壳 11
极柱 12
顶壁 111
底壁 113
侧壁 115
弧形区 116
平面区 117
第一极柱部 121
第二极柱部 125
第一连接柱 122
第一凸伸部 123
第二连接柱 126
第二凸伸部 127
卡槽 128
安装孔 118
绝缘件 15
电芯 17
电芯主体 171
第一极耳 173
第二极耳 175
第一输入端 21
第一输出端 23
绝缘层 30
第二输入端 25
第二输出端 27
封装膜 40
柔性电路板 29、29a
开口 41
第一部分 291
第二部分 293
金属片 28a、28b
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包括电池主体10及电连接结构20。在本申请中，所述电池主体10为纽扣电池。
请同时参阅图2，所述电池主体10包括外壳11与极柱12。所述外壳11由导电材料制得，例如金属或者合金等。所述外壳11包括顶壁111、底壁113以及连接所述顶壁111与所述底壁113的侧壁115。其中，所述侧壁115包括弧形区116及与所述弧形区116相接的平面区117。
所述极柱12由导电材料制得，例如金属或者合金。所述极柱12设置于所述平面区117上，且所述极柱12与所述平面区117之间绝缘。其中，所述极柱12设置于所述平面区117上，避免了将极柱设置于电池的顶部导致的电池的厚度增加的问题，从而提高了应用所述电池的空间利用率。
具体的，在本申请中，所述弧形区116对应一圆筒的部分弧形侧壁。请参阅图3，除与所述弧形区116的连接处外，所述平面区117的其他位置到所述圆筒中心轴线的距离D1小于所述弧形区116到所述圆筒中心轴线的距离D2。优选的，在一些实施例中，D1与D2的比为4:5～9:10，所述极柱12位于所述平面区117对应的外接圆内，进而进一步提高电子设备内部空间利用率。更优选的，请参阅图4及图5，在一些实施方式中，所述极柱12相较于所述平面区117朝背离所述外壳11中心的方向凸出的高度H为0.3mm～10mm，以在缩减体积的同时便于与其他元件连接。
请参阅图5，所述极柱12包括第一极柱部121及第二极柱部125。所述第一极柱部121大致呈T型，包括第一连接柱122及自所述第一连接柱122一端的周缘向外延伸的第一凸伸部123。所述第二极柱部125大致呈T型，包括第二连接柱126及自所述第二连接柱126一端的周缘向外延伸的第二凸伸部127。所述第二连接柱126背离所述第二凸伸部127的一端设有卡槽128。所述第一连接柱122插入所述卡槽128内卡合形成工字形的极柱12。所述平面区117上开设有贯穿的安装孔118，所述第一连接柱122与所述第二连接柱126卡合并穿过所述安装孔118，所述第一凸伸部123位于所述外壳11，所述第二凸伸部127位于所述外壳11，从而限位于所述安装孔118的两侧。
所述电池主体10还包括绝缘件15，所述绝缘件15设置于所述外壳11与所述极柱12之间以使得所述外壳11与所述极柱12之间绝缘。在一些实施例中，所述绝缘件15可与所述外壳11及所述极柱12之间为分离式设计。在另一些实施例中，所述绝缘件15可结合于所述外壳11或者所述极柱12上，例如通过注塑一体成型于所述外壳11或者所述极柱12上。所述绝缘件15可为但不仅限于高分子材料，例如尼龙、PFA(全氟丙基全氟乙烯基醚与聚四氟乙烯的共聚物)等塑料或橡胶等。
请参阅图4，所述电池主体10还包括电芯17，所述外壳11及所述极柱12配合封装所述电芯17。所述电芯17可为堆叠式电芯，也可为卷绕式电芯。所述电芯17包括电芯主体171、及分别与所述电芯主体171连接的第一极耳173与第二极耳175。所述第一极耳173与所述第二极耳175极性相反。所述第一极耳173电连接所述电芯主体171与所述外壳11，所述第二极耳175电连接所述电芯主体171与所述极柱12。即在所述电池主体10中，当所述第一极耳173为负极极耳，所述第二极耳175为正极极耳时，所述外壳11则充当负极，所述极柱则为正极；当所述第一极耳173为正极极耳，所述第二极耳175为负极极耳时，所述外壳11则充当正极，所述极柱则为负极。
请参阅图2，在一些实施例中，所述侧壁115包括一个弧形区116及一个平面区117。请参阅图3，在一些实施例中，所述侧壁115包括两个弧形 区116及两个平面区117，所述弧形区116与所述平面区117交替设置，两个所述平面区117相背。在本申请中，设置平面区117提高能量密度的同时，还便于所述电池100安装时的定位，同时有利于所述极柱12设置的稳定性。
请参阅图1、图6至图27，所述电连接结构20包括第一输入端21及电连接所述第一输入端21的第一输出端23。所述第一输入端21电连接所述极柱12，所述第一输出端23沿所述侧壁所在方向设置，且所述第一输入端21及所述第一输出端23与所述外壳11之间绝缘。在本申请中，由于所述极柱12设置于所述平面区117，避免了极柱占用电池端部的空间，从而有利于电池的能量密度，而所述第一输入端21位于所述平面区117，有利于提高第一输入端21电连接的有效性，进而提高所述电池100的可靠性。另外，所述第一输出端23沿所述侧壁所在方向设置，同样不占用电池端部的空间，进一步有利于提高电池的能量密度。
具体的，所述第一输入端21及所述第一输出端23可与所述外壳11间隔设置，从而避免短路。在一些实施例中，所述第一输入端21与所述外壳11之间及所述第一输出端23与所述外壳11之间还可设置绝缘层30以避免短路。
所述电连接结构20还包括第二输入端25及电连接所述第二输入端25的第二输出端27。所述第二输入端25电连接所述外壳11。
所述电池100还可包括封装膜40，所述封装膜40封装所述电连接结构20及所述电池主体10，其中，所述第一输出端23及所述第二输出端27从所述封装膜40露出。
在一些实施例中，所述封装膜40可为但不仅限于热缩膜，所述热缩膜在受热后收缩紧贴于所述电池主体10及所述电连接结构20上。
所述电连接结构20还可包括柔性电路板29，所述第一输入端21通过所述柔性电路板29与所述第一输出端23连接。所述封装膜40可封装所述柔性电路板29。
请参阅图1及图6，所述侧壁115包括两个弧形区116及两个平面区117， 两所述平面区117大致平行设置。所述极柱12设置于一所述平面区117上。所述柔性电路板29沿一所述弧形区116设置，且所述柔性电路板29的一端与所述极柱12连接，另一端与未设所述极柱12的平面区117连接。所述第一输出端23及所述第二输出端27分别为电子线，且连接于所述柔性电路板29对应所述弧形区116的区域，从而实现所述第一输出端23与所述第一输入端21的电连接，以及所述第二输出端27与所述第二输入端25的电连接。每一电子线沿所述侧壁115所在方向设置，且背离所述柔性电路板29的一端伸出所述顶壁111，并从所述封装膜40伸出。
在一些实施例中，请参阅图7及图8，所述柔性电路板29连接所述极柱12以实现所述第一输出端23与所述第一输入端21之间的电连接，所述柔性电路板29连接所述顶壁以实现所述第二输出端27与所述第二输入端25之间的电连接。所述第一输出端23及所述第二输出端27分别为电子线，且沿设有所述极柱12的平面区117所在方向平行设置，每一电子线背离所述柔性电路板29的一端伸出所述顶壁111，并从所述封装膜40伸出。
在一些实施例中，请参阅图9，所述柔性电路板29对应设有所述极柱12的平面区117设置，第二输入端25连接设有所述极柱12的平面区117。所述第一输出端23及所述第二输出端27分别为电子线，且沿设有所述极柱12的所述平面区117伸出所述顶壁111，并伸出所述封装膜40。
在一些实施例中，请参阅图12至图19，所述第一输出端23及所述第二输出端27还可为连接器、金手指、焊盘或导电片中的一种。所述第一输出端23及所述第二输出端27设置于所述柔性电路板29与所述侧壁115对应的区域。所述封装膜40上设有开口41以露出所述第一输出端23及所述第二输出端27。优选的，所述第一输出端23及所述第二输出端27对应所述平面区117设置。
在一些实施例中，请参阅图20至图23，所述柔性电路板29包括第一部分291及与所述第一部分291相接的第二部分293。所述第一部分291安装于所述外壳11并被所述封装膜40封装，所述第二部分293沿所述侧壁115 所在的平面伸出所述顶壁111，并从所述封装膜40伸出。
所述第一输出端23及所述第二输出端27设置于所述柔性电路板29外露于所述封装膜40外的第二部分293上。
优选的，所述第二部分293从所述平面区117伸出所述顶壁111。
在一些实施例中，请参阅图24至图27，所述电连接结构20可通过金属片28a连接所述第一输出端23与所述第一输入端21，所述金属片28a沿所述平面区117设置并伸出所述顶壁111，从而从所述封装膜40伸出。所述金属片28a与所述外壳11之间绝缘。所述第一输出端23位于所述金属片28a外露于所述封装膜40的区域。
所述第二输出端27与所述第二输入端25可通过金属片28b连接，且所述第二输出端27从所述封装膜40露出。
在另一些实施例中，请参阅图10及图11，所述第二输出端27与所述第二输入端25还可通过柔性电路板29a连接。优选的，所述柔性电路板29a对应未设有所述极柱12的平面区117设置，所述第二输入端25电连接所述平面区117。所述封装膜40封装所述柔性电路板29a，所述第二输出端27从所述封装膜40伸出。
所述第一输入端21和所述第二输入端25为导电材料。特别的，在一些实施例中，所述第一输入端21可为导电泡棉，以粘结于所述极柱12的同时电连接所述极柱12；所述第二输入端25可为导电泡棉，以与所述外壳11粘结并电连接所述外壳11。
在一些实施例中，所述封装膜40还可与所述电池主体10及所述电连接结构20通过注塑一体成型，使得所述封装膜40不仅包覆于所述电池主体10与所述电连接结构20的外侧，同时还填充于所述电池主体10与所述电连接结构20之间的间隙(例如所述第一输出端23与外壳11之间的间隙)中，在提升绝缘效果的同时还提升了所述电池100的抗跌落能力，进而进一步保障了电连接的稳固性。如图28所示，部分封装膜40直接注塑于所述电池主体10的底壁113及侧壁115上，以包覆所述底壁113、所述侧壁115以及所 述电连接结构20，仅使所述第一输出端23及所述第二输出端27外露于注塑成型的封装膜40外。所述电池100还可包括可分离式的封装膜用以包覆所述电池主体10未被注塑成型的封装膜40封装的区域。如图29所示，所述封装膜40通过注塑一体成型于整个电池主体10上，并包覆所述电连接结构20除所述第一输出端23及所述第二输出端27之外的区域。
在一些实施例中，所述电池100可包括多个电池主体10，多个所述电池主体10之间串联或者并联设置。
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权利要求的保护范围。

Claims (15)

  1. 一种电池，其特征在于，包括：
    电池主体，包括外壳与极柱，所述外壳包括顶壁、底壁以及连接所述顶壁与所述底壁的侧壁，所述侧壁包括弧面区及与所述弧面区相接的平面区，所述极柱穿设于所述平面区，且所述极柱与所述外壳之间绝缘；
    电连接结构，包括第一输入端及电连接所述第一输入端的第一输出端，所述第一输入端电连接所述极柱，所述第一输出端沿所述侧壁所在的平面设置，且所述第一输出端与所述外壳之间绝缘。
  2. 如权利要求1所述的电池，其特征在于，所述电连接结构还包括柔性电路板，所述第一输入端通过所述柔性电路板与所述第一输出端连接。
  3. 如权利要求2所述的电池，其特征在于，所述第一输出端为电子线，所述电子线沿所述侧壁所在的平面设置，且所述电子线的一端连接所述柔性电路板，另一端伸出所述顶壁。
  4. 如权利要求2所述的电池，其特征在于，所述第一输出端为焊盘、金手指、导电片或连接器，所述第一输出端设置于所述柔性电路板与所述侧壁对应的区域。
  5. 如权利要求2所述的电池，其特征在于，所述柔性电路板包括第一部分及与所述第一部分相接的第二部分，所述第一部分安装于所述外壳，所述第二部分沿所述侧壁所在的平面设置并伸出所述顶壁，所述第一输出端设置于所述第二部分从所述顶壁伸出的区域。
  6. 如权利要求1所述的电池，其特征在于，所述电连接结构还包括金属片，所述第一输入端通过所述金属片与所述第一输出端连接，所述金属片沿所述侧壁所在的平面设置并伸出所述顶壁，且所述金属片与外壳之间绝缘，所述第一输出端位于所述金属片从所述顶壁伸出的区域。
  7. 如权利要求1、5及6中任意一项所述的电池，其特征在于，所述第一输出端为焊盘、导电片、电子线及连接器中的任意一种。
  8. 如权利要求1所述的电池，其特征在于，所述电连接结构还包括第二 输入端及电连接所述第二输入端的第二输出端，所述第二输入端电连接所述外壳。
  9. 如权利要求8所述的电池，其特征在于，所述电连接结构还包括柔性电路板或金属片，所述第二输入端通过所述柔性电路板或所述金属片与所述第二输出端连接。
  10. 如权利要求8所述的电池，其特征在于，所述第二输出端为电子线、焊盘、金手指、导电片或连接器。
  11. 如权利要求8所述的电池，其特征在于，所述第一输入端为导电泡棉，以粘结于所述极柱的同时电连接所述极柱；以及/或所述第二输入端为导电泡棉，以与所述外壳粘结并电连接。
  12. 如权利要求8所述的电池，其特征在于，所述电池还包括封装膜，所述封装膜封装所述电池主体及所述电连接结构；其中，所述第一输出端及所述第二输出端从所述封装膜露出。
  13. 如权利要求1所述的电池，其特征在于，所述电池还包括封装膜，所述封装膜封装所述电池主体及所述电连接结构；其中，所述第一输出端从所述封装膜露出。
  14. 如权利要求12或13所述的电池，其特征在于，所述封装膜通过注塑与所述电池主体及所述柔性电路板一体成型。
  15. 如权利要求12所述的电池，其特征在于，所述电池包括多个电池主体，多个所述电池主体层叠设置并被所述封装膜封装，多个所述电池主体之间串连或并联。
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