WO2021102976A1 - 电池 - Google Patents

电池 Download PDF

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Publication number
WO2021102976A1
WO2021102976A1 PCT/CN2019/122138 CN2019122138W WO2021102976A1 WO 2021102976 A1 WO2021102976 A1 WO 2021102976A1 CN 2019122138 W CN2019122138 W CN 2019122138W WO 2021102976 A1 WO2021102976 A1 WO 2021102976A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
output terminal
pole
electrical connection
battery according
Prior art date
Application number
PCT/CN2019/122138
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 CN201980102644.2A priority Critical patent/CN114747082B/zh
Priority to PCT/CN2019/122138 priority patent/WO2021102976A1/zh
Publication of WO2021102976A1 publication Critical patent/WO2021102976A1/zh

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Classifications

    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/1243—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the internal coating on the casing
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • 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
    • H01M50/545—Terminals formed by the casing of the cells
    • 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
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides 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
    • 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
    • H01M50/552—Terminals characterised by their shape
    • 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

  • 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, a first output end, and a metal sheet electrically connecting the first input end and the first output end, the first input end is electrically connected to the pole, and the first The output end is arranged along the plane where the top wall is located.
  • an insulating layer is provided between the metal sheet and the housing.
  • the first output terminal is an electronic wire, and the electronic wire protrudes from the side wall along the direction where the top wall is located.
  • the first output terminal is a conductive sheet and is insulated from the housing.
  • 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 second output terminal is an electronic wire or a conductive sheet
  • the second output terminal is arranged in parallel with the first output terminal.
  • the first input end is conductive foam to be bonded to and electrically connected to the pole; and/or the second input end is conductive foam to be connected to the housing Bonding and electrical connection.
  • 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 packaging film is integrally formed with the battery body and the electrical connection structure by injection molding.
  • 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 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 is disposed in the plane area and the second input terminal is located in the plane area, it is beneficial to improve the effectiveness of the electrical connection of the second input terminal, thereby improving the battery assembly Reliability.
  • connecting the first input terminal and the first output terminal through the metal sheet is beneficial to reduce the size of the battery and is beneficial to the miniaturization 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 schematic partial cross-sectional view of a battery main body 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.
  • 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 a schematic structural 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 a schematic diagram of the structure 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.
  • Battery pack 100 Battery main body 10 Electrical connection structure 30 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 first connecting column 121 First protrusion 122 Second connecting column 126 Second protrusion 127 Card slot 128 Mounting holes 118
  • Insulator 15 Batteries 17 Cell body 171 First pole 173 Second pole 175 First input 31 First output 33 Metal sheets 35 Insulation 40 Encapsulation film 50 Opening 51, 53 Second input 32 Second output 34
  • the battery 100 includes a battery main body 10 and an electrical connection structure 30.
  • the battery body 10 is a button battery.
  • the battery main body 10 includes a casing 11 and a pole 12.
  • the housing 10 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 30 includes a first input terminal 31, a first output terminal 33, and a metal sheet 35 connecting the first input terminal 31 and the first output terminal 33 .
  • the metal sheet 35 realizes the electrical connection between the first input terminal 31 and the first output terminal 33.
  • the first input terminal 31 is disposed in the plane area 117 and is electrically connected to the pole 12.
  • the first output terminal 33 is arranged along the direction of the plane where the top wall 111 is located.
  • the pole 12 is disposed in the plane area 117, the first input terminal 31 is located in the plane area 117, which is beneficial to improve the effectiveness of the electrical connection of the first input terminal 31, and thereby The reliability of the battery 100 is improved.
  • connecting the first input terminal 31 and the first output terminal 33 through the metal sheet 35 is beneficial to reduce the size of the battery and is beneficial to the miniaturization of the battery.
  • the first input terminal 31, the first output terminal 33, and the metal sheet 35 may be spaced apart from the housing 11 to avoid the first input terminal 31, the first The output terminal 33 and the metal sheet 35 are in contact with the housing 11 to avoid short circuits.
  • Insulating layers 40 are respectively provided to prevent the first input terminal 31, the first output terminal 33, and the metal sheet 35 from contacting the housing 11 to avoid short circuits.
  • the first output terminal 33 may be an electronic wire or a conductive sheet.
  • the battery 100 may further include an encapsulation film 50, and the encapsulation film 50 encapsulates the battery body 10 and the electrical connection structure 30. Wherein, the first output terminal 33 is exposed from the packaging film 50.
  • the first output terminal 33 is from the side wall 115 and the packaging film 50 along the direction where the top wall 111 is located. Reach out.
  • the first output terminal 33 is a conductive sheet
  • the conductive sheet is located on the top wall 111
  • the packaging film 50 is provided with an opening 51, so The first output terminal 33 is exposed from the opening 51 so as to be electrically connected to external electronic components.
  • the electrical connection structure 30 further includes a second input terminal 32 and a second output terminal 34 electrically connected to the second input terminal 32.
  • the second input terminal 32 is electrically connected to the housing 11 and is covered by the packaging film 50.
  • the second output terminal 34 is exposed from the packaging film 50.
  • the second output terminal 34 is an electronic wire or a conductive sheet, and the second output terminal 34 protrudes from the packaging film 50 along the direction where the top wall 111 is located. In some embodiments, referring to FIG. 10, the second output terminal 34 may also extend from the packaging film 50 along the direction of the side wall 115. In other embodiments, referring to FIGS. 8 and 9, the second output terminal 34 is a conductive sheet, the conductive sheet is located on the top wall 111, the packaging film 50 is provided with an opening 53, so The second output terminal 34 is exposed from the opening 53 to link external electronic components.
  • the first output terminal 33 and the second output terminal 34 are arranged in parallel.
  • the first input terminal 31 and the second input terminal 34 are made of conductive materials. Particularly, in some embodiments, the first input end 31 is conductive foam to be bonded to and electrically connected to the pole 12; the second input end 34 may be conductive foam to be The housing 11 is bonded and electrically connected to the housing 11.
  • the packaging film 50 may be, but is not limited to, a heat-shrinkable film, which shrinks and closely adheres to the battery body 10 and the electrical connection structure 30 after being heated.
  • the packaging film 50 can also be integrally formed with the battery body 10 and the electrical connection structure 30 by injection molding, so that the packaging film 50 not only covers the battery body 10 and the electrical connection structure 30;
  • the outer side of the connection structure 30 is also filled in the gap between the battery body 10 and the electrical connection structure 30 (for example, the gap between the metal sheet 35 and the housing 11), which improves the insulation effect and at the same time.
  • the anti-drop ability of the battery 100 further ensures the stability of the electrical connection.
  • part of the packaging film 50 is directly injection molded on the top wall 111 and part of the side wall 115 of the battery body 10 to cover the electrical connection structure 30, so that only the first output terminal 33 and the The second output end 34 is exposed outside the injection molded packaging film 50.
  • 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 50 by injection molding.
  • the packaging film 50 is integrally molded on the entire battery body 10 by injection molding, and covers the electrical connection structure 30 except for the first output terminal 33 and the second output terminal 34. area.
  • the battery 100 omits the second input terminal 32, and directly uses the portion of the housing 11 exposed from the packaging film 50 as the second output terminal 34 to be electrically connected to external electronic components.
  • 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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  • 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、第一输出端以及电连接所述第一输入端与所述第一输出端的金属片，所述第一输入端电连接所述极柱，所述第一输出端沿所述顶壁所在的平面设置。所述电池的结构有利于提高电连接的稳固性以及电池的小型化。

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，有必要提供一种可靠性更高且有利于小型化的电池。
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、第一输出端以及电连接所述第一输入端与所述第一输出端的金属片，所述第一输入端电连接所述极柱，所述第一输出端沿所述顶壁所在的平面设置。
在本申请一实施例中，所述金属片与所述外壳之间设有绝缘层。
在本申请一实施例中，所述第一输出端为电子线，所述电子线沿所述顶壁所在方向从所述侧壁伸出。
在本申请一实施例中，所述第一输出端为导电片且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第二输入端以及电连接所 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，所述第二输出端为电子线或导电片
在本申请一实施例中，所述第二输出端与所述第一输出端平行设置。
在本申请一实施例中，所述第一输入端为导电泡棉，以与所述极柱粘结并电连接；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，所述封装膜通过注塑与所述电池主体及所述电连接结构一体成型。
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。
本申请的电池组件，由于所述极柱设置于所述平面区，所述第二输入端位于所述平面区，从而有利于提高第二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，通过所述金属片连接所述第一输入端与所述第一输出端，有利于减小电池的体积，有利于电池的小型化。
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为本申请一实施例的电池主体的局部剖面示意图。
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结构示意图。
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结构示意图。
图12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
电池组件 100
电池主体 10
电连接结构 30
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 121
第一凸伸部 122
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 31
第一输出端 33
金属片 35
绝缘层 40
封装膜 50
开口 51、53
第二输入端 32
第二输出端 34
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30。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10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9，所述电连接结构30包括第一输入端31、第一输出端33以及连接所述第一输入端31与所述第一输出端33的金属片35。所述金属片35实现所述第一输入端31与所述第一输出端33之间的电连接。所述第一输入端31设置于所述平面区117并电连接所述极柱12。所述第一输出端33沿所述顶壁111所在平面方向设置。在本申请中，由于所述极柱12设置于所述平面区117，因此所述第一输入端31位于所述平面区117，从而有利于提高第一输入端31电连接的有效性，进而提高所述电池100的可 靠性。另外，通过所述金属片35连接所述第一输入端31与所述第一输出端33，有利于减小电池的体积，有利于电池的小型化。
在一些实施例中，所述第一输入端31、所述第一输出端33及所述金属片35可分别与所述外壳11间隔设置，避免所述第一输入端31、所述第一输出端33及所述金属片35与所述外壳11接触从而避免短路。在一些实施例中，所述第一输入端31与所述外壳11之间、所述第一输出端33与所述外壳11之间、所述金属片35与所述外壳11之间还可分别设置绝缘层40，以避免所述第一输入端31、所述第一输出端33及所述金属片35与所述外壳11接触从而避免短路。
请参阅图6至图10，所述第一输出端33可为电子线或者导电片。
请参阅图1，所述电池100还可包括封装膜50，所述封装膜50封装所述电池主体10及所述电连接结构30。其中，所述第一输出端33从所述封装膜50露出。
具体的，在一些实施例中，请参阅图1、图6、图7及图10，所述第一输出端33沿所述顶壁111所在方向从所述侧壁115及所述封装膜50伸出。
在另一些实施例中，请参阅图8及图9，所述第一输出端33为导电片，所述导电片位于所述顶壁111上，所述封装膜50上设有开口51，所述第一输出端33从所述开口51露出，从而电连接外接电子元件。
所述电连接结构30还包括第二输入端32以及电连接所述第二输入端32的第二输出端34。所述第二输入端32电连接所述外壳11并被所述封装膜50包覆。所述第二输出端34从所述封装膜50露出。
在一些实施例中，请参阅图6，所述第二输出端34为电子线或导电片，所述第二输出端34沿所述顶壁111所在方向从所述封装膜50伸出。在一些实施例中，请参阅图10，所述第二输出端34还可沿所述侧壁115所在方向从所述封装膜50伸出。在另一些实施例中，请参阅图8及图9，所述第二输出端34为导电片，所述导电片位于所述顶壁111上，所述封装膜50上设有开口53，所述第二输出端34从所述开口53露出以点链接外接电子元件。
优选的，所述第一输出端33及所述第二输出端34平行设置。
所述第一输入端31及所述第二输入端34为导电材料。特别的，在一些实施例中，所述第一输入端31为导电泡棉，以与所述极柱12粘结并电连接；所述第二输入端34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50可为但不限于热缩膜，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30上。
在一些实施例中，所述封装膜50还可与所述电池主体10及所述电连接结构30通过注塑一体成型，使得所述封装膜50不仅包覆于所述电池主体10于所述电连接结构30的外侧，同时还填充于所述电池主体10与所述电连接结构30之间的间隙(例如金属片35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11所示，部分封装膜50直接注塑于所述电池主体10的顶壁111及部分侧壁115上，以包覆所述电连接结构30，仅使所述第一输出端33及所述第二输出端34外露于注塑成型的封装膜50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50封装的区域。如图12所示，所述封装膜50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30除所述第一输出端33及所述第二输出端34之外的区域。
在另一些实施例中，所述电池100省略所述第二输入端32，直接将所述外壳11从所述封装膜50露出的部分作为所述第二输出端34与外接电子元件电连接。
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 (12)

  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、第一输出端以及电连接所述第一输入端与所述第一输出端的金属片，所述第一输入端电连接所述极柱，所述第一输出端沿所述顶壁所在的平面设置。
  2. 如权利要求1所述的电池，其特征在于，所述金属片与所述外壳之间设有绝缘层。
  3. 如权利要求1所述的电池，其特征在于，所述第一输出端为电子线，所述电子线沿所述顶壁所在方向从所述侧壁伸出。
  4. 如权利要求1所述的电池，其特征在于，所述第一输出端为导电片且与所述外壳之间绝缘。
  5. 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以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。
  6. 如权利要求5所述的电池，其特征在于，所述第二输出端为电子线或导电片
  7. 如权利要求5所述的电池，其特征在于，所述第二输出端与所述第一输出端平行设置。
  8. 如权利要求5所述的电池，其特征在于，所述第一输入端为导电泡棉，以与所述极柱粘结并电连接；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。
  9. 如权利要求5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。
  10. 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。
  11. 如权利要求10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电连接结构一体成型。
  12. 如权利要求9-11中任意一项所述的电池，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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