WO2022041541A1 - 一种电池 - Google Patents

一种电池 Download PDF

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Publication number
WO2022041541A1
WO2022041541A1 PCT/CN2020/133145 CN2020133145W WO2022041541A1 WO 2022041541 A1 WO2022041541 A1 WO 2022041541A1 CN 2020133145 W CN2020133145 W CN 2020133145W WO 2022041541 A1 WO2022041541 A1 WO 2022041541A1
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WO
WIPO (PCT)
Prior art keywords
end plate
battery
electrode end
core assembly
battery body
Prior art date
Application number
PCT/CN2020/133145
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English (en)
French (fr)
Inventor
李澎栋
卢海军
Original Assignee
中山市小万能源科技有限公司
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Publication date
Application filed by 中山市小万能源科技有限公司 filed Critical 中山市小万能源科技有限公司
Priority to US17/419,097 priority Critical patent/US11837753B2/en
Priority to JP2021600091U priority patent/JP3239502U/ja
Priority to RU2021123859U priority patent/RU208518U1/ru
Publication of WO2022041541A1 publication Critical patent/WO2022041541A1/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
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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 of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/107—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button 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
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
    • H01M50/56—Cup shaped terminals
    • 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

  • the present invention relates to a battery.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a battery with low internal resistance and high rate after being connected to each other.
  • a battery according to an embodiment of the present invention includes a battery body, two ends of the battery body are respectively provided with a first electrode end plate and a second electrode end plate, and a connection kit is provided on the first electrode end plate,
  • the contour edge of the second electrode end plate extends along the length direction of the battery body and is away from the battery body to enclose a first installation counterbore; the connection kit can be connected with the first mounting hole of the other battery.
  • the mounting countersink can be detachably connected, and the free end of the connection sleeve has an electrical contact surface that forms surface contact with the second electrode end plate.
  • the battery with the above structure is provided with a connection kit on the first electrode end plate of the battery body, and a first installation counterbore matching the connection kit and similar to the outline size of the battery body is provided on the second electrode end plate of the battery body.
  • the connection kit on one battery is installed on the first mounting countersunk hole of the other battery, and the electrical contact surface of the connection kit can be in surface contact with the second electrode end plate.
  • the above structure includes: It is beneficial to increase the contact area when adjacent batteries are connected, reduce the internal resistance of the battery, and achieve the technical effect of high rate.
  • the inner wall surface of the first mounting counterbore is provided with a first internal thread
  • the connection sleeve is provided with a first external thread matching the first internal thread
  • the contour edge of the first electrode end plate extends along the length direction of the battery body and faces away from the battery body to enclose a second installation counterbore, and the connection kit can be detachably installed in the second mounting counterbore.
  • the inner wall surface of the second mounting counterbore is provided with a second internal thread
  • the connection sleeve is provided with a second external thread matching the second internal thread
  • connection kit includes a cylindrical portion, and the electrical contact surface is located on a lower end surface of the cylindrical portion and extends inward to close or narrow the lower opening of the cylindrical portion.
  • a winding core assembly is provided inside the battery body, and the winding core assembly is formed by stacking and winding a positive electrode film, a first insulating film, a negative electrode film and a second insulating film in sequence.
  • the positive film of each circle is connected with the first pole piece that protrudes out of the core assembly, the first pole piece is connected to the first bus piece, the first bus piece Electrically connected with the second electrode end plate, the negative film of each circle is connected with a second pole piece that protrudes out of the core assembly, and the second pole piece is connected to the second pole piece.
  • the second busbar is electrically connected to the first electrode end plate.
  • the battery body includes a barrel-shaped casing, and the first electrode end plate and the second electrode end plate are respectively disposed at two ends of the barrel-shaped casing to enclose a casing assembly , the winding core assembly is accommodated in the housing assembly, the first busbar is sandwiched between the winding core assembly and the second electrode end plate, and the second busbar is sandwiched between between the winding core assembly and the first electrode end plate.
  • one of the positive electrode film and the negative electrode film protrudes upward from the whole of the winding core assembly, and the other protrudes downward from the whole of the winding core assembly.
  • the first pole piece is fixed on the first bus piece by welding
  • the second pole piece is fixed on the second bus piece by welding
  • Fig. 1 is the appearance schematic diagram of one of the embodiments of the present invention.
  • Fig. 2 is the structure exploded schematic diagram of Fig. 1;
  • FIG. 3 is a schematic diagram of the internal structure of an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the internal structure of another embodiment of the present invention.
  • Figure 5 is a schematic structural diagram of an embodiment of the winding core assembly combined with the first pole piece and the second pole piece after unrolling.
  • orientation descriptions are involved, such as the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal” “,” “top”, “bottom”, “inside”, “outside” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
  • the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below, within, etc. are understood as including this number. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • connection should be understood in specific situations.
  • a battery according to an embodiment of the present invention includes: a battery body 100 , two ends of the battery body 100 are respectively provided with a first electrode end plate 200 and a second electrode end plate 600 .
  • the plate 200 is provided with a connection kit 300 , and the contour edge of the second electrode end plate 600 extends along the length direction of the battery body 100 and faces away from the battery body 100 to enclose a first mounting counterbore 601 ; the connection kit 300 can be connected with another battery.
  • the first mounting counterbore 601 is detachably connected, and the free end of the connection sleeve 300 has an electrical contact surface 301 that forms surface contact with the second electrode end plate 600 .
  • the battery body 100 may be cylindrical or prismatic, and the shape is not limited.
  • the battery with the above structure is provided with a connection kit on the first electrode end plate of the battery body, and a first installation counterbore matching the connection kit and similar to the outline size of the battery body is provided on the second electrode end plate of the battery body.
  • the connection kit on one battery is installed on the first mounting countersunk hole of the other battery, and the electrical contact surface of the connection kit can be in surface contact with the second electrode end plate.
  • the above structure includes: It is beneficial to increase the contact area when adjacent batteries are connected, reduce the internal resistance of the battery, and achieve the technical effect of high rate.
  • the inner wall surface of the first mounting counterbore 601 is provided with a third An inner thread 602 is provided on the connecting sleeve 300 with a first outer thread 302 matching the first inner thread 602 .
  • the detachable connection structure between the connection kit 300 and the first mounting counterbore 601 can also be replaced by other means such as snap connection.
  • the contour edge of the first electrode end plate 200 extends along the length direction of the battery body 100 and faces away from the battery body 100 to enclose a second mounting counterbore, and the connecting sleeve 300 It is detachably installed in the second installation counterbore, so that the battery of the embodiment of the present invention can be used alone or only the battery can be replaced among several batteries connected in series.
  • a second internal thread 201 is provided on the inner wall of the second installation counterbore, and the connection kit 300 There is a second external thread 303 matching the second internal thread 201 thereon.
  • the detachable connection structure between the connection kit 300 and the second installation counterbore can also be replaced by other means such as snap connection.
  • the connection kit 300 includes a cylindrical portion, and the electrical contact surface 301 is located on the lower end surface of the cylindrical portion and extends inward to narrow the lower opening of the cylindrical portion, see FIG. 4 , in another embodiment of the present invention, the electrical contact surface 301 is located on the lower end face of the cylindrical portion and extends inward to close the lower opening of the cylindrical portion. Both embodiments can further increase the electrical contact surface The area of 301 further reduces the internal resistance of the battery.
  • the battery is a nickel-metal hydride battery
  • a core assembly 400 is provided inside the battery body 100
  • the core assembly 400 is composed of a positive electrode film 401 and a first insulating film 402 , the negative electrode film 403 and the second insulating film 404 are stacked in turn and wound into several turns, wherein, in order to avoid the traditional positive electrode film 401 being connected with the second electrode end plate 600 only through one pole piece, the internal resistance increases.
  • the positive diaphragms 401 of each circle are connected with the first pole pieces 51 that protrude out of the winding core assembly 400 , the first pole pieces 51 are all connected to the first bus bar 52 , and the first bus bar 52 is connected to the first pole piece 51 .
  • the two electrode end plates 600 are electrically connected.
  • the negative electrode diaphragm 403 of each circle is connected with The second pole pieces 53 extending out of the winding core assembly 400 are all connected to the second bus bar 54 , and the second bus bar 54 is electrically connected to the first electrode end plate 200 . Thereby, the charging and discharging efficiency of the battery is further improved.
  • the battery body 100 includes a barrel-shaped casing, the first electrode end plate 200 and the second electrode end plate 600 are respectively disposed at two ends of the barrel-shaped casing to enclose a casing assembly, wherein the barrel-shaped casing An insulating sealing ring 7 is provided between the outer casing and the first electrode end plate 200 and between the barrel-shaped outer casing and the second electrode end plate 600 , the winding core assembly 400 is accommodated in the casing assembly, and the first bus bar 52 is sandwiched between Between the winding core assembly 400 and the second electrode end plate 600 , the second bus bar 54 is sandwiched between the winding core assembly 400 and the first electrode end plate 200 , so as to avoid unstable electrical connection.
  • one of the positive electrode film 401 and the negative electrode film 403 protrudes upward from the whole of the winding core assembly 400 , and the other protrudes downward from the whole of the winding core assembly 400 , Thus, the first pole piece 51 and the second pole piece 53 are easily drawn out, and the battery production process is simplified.
  • the first pole piece 51 in order to ensure that the first pole piece 51 and the first bus piece 52 can be firmly connected, the first pole piece 51 is welded and fixed on the first bus piece 52.
  • the two bus bars 54 can be firmly connected, and the second pole piece 53 is welded and fixed on the second bus bar 54 .

Abstract

本发明公开了一种电池，包括：电池本体，所述电池本体的两端分别设有第一电极端板和第二电极端板，所述第一电极端板上设置有连接套件，所述第二电极端板的轮廓边缘沿所述电池本体的长度方向延伸且背离所述电池本体而围成第一安装沉孔；所述连接套件能够与另一所述电池的第一安装沉孔可拆卸连接，且所述连接套件的自由端具有与所述第二电极端板形成面接触的电性接触面。相邻两个上述电池进行连接时，将一个电池上的连接套件安装在另一电池的第一安装沉孔上，并且连接套件的电性接触面能够与第一安装沉孔内的第二电极端板实现面接触，从而有利于增大相邻的电池相连接时的接触面积，达到减小电池内阻、实现高倍率的技术效果。

Description

一种电池 技术领域
本发明涉及一种电池。
背景技术
目前，为了将多节电池通过机械结构连接在一起，通常的做法是在电池本体的正极端和负极端的中心位置分别设置金属连接柱和金属连接套，相邻的两节电池之间通过金属连接柱与金属连接套相配合进行连接。但是，金属连接柱与金属连接套相接触的端面面积较小，导致多节电池相连接后的电阻值增大，进行导致电池组的充放电效率较低，影响电池组的性能。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种相互连接后内阻较小、高倍率的电池。
根据本发明实施例的一种电池，包括：电池本体，所述电池本体的两端分别设有第一电极端板和第二电极端板，所述第一电极端板上设置有连接套件，所述第二电极端板的轮廓边缘沿所述电池本体的长度方向延伸且背离所述电池本体而围成第一安装沉孔；所述连接套件能够与另一所述电池的所述第一安装沉孔可拆卸连接，且所述连接套件的自由端具有与所述第二电极端板形成面接触的电性接触面。
根据本发明实施例的一种电池，至少具有如下有益效果：
以上结构的电池在电池本体的第一电极端板上设置连接套件，在电池本体的第二电极端板上设置与连接套件相匹配且与电池本体的轮廓尺寸相近的第一安装沉孔，相邻两个电池进 行连接时，将一个电池上的连接套件安装在另一电池的第一安装沉孔上，并且连接套件的电性接触面能够与第二电极端板实现面接触，以上结构有利于增大相邻的电池相连接时的接触面积，减小电池内阻,从而达到高倍率的技术效果。
在本发明的一些实施例中，所述第一安装沉孔的内壁面上设有第一内螺纹，所述连接套件上设有与第一内螺纹相匹配的第一外螺纹。
在本发明的一些实施例中，所述第一电极端板的轮廓边缘沿所述电池本体的长度方向延伸且背离所述电池本体而围成第二安装沉孔，所述连接套件可拆卸安装在所述第二安装沉孔内。
在本发明的一些实施例中，所述第二安装沉孔的内壁面上设有第二内螺纹，所述连接套件上设有与所述第二内螺纹相匹配的第二外螺纹。
在本发明的一些实施例中，所述连接套件包括圆筒部，所述电性接触面位于所述圆筒部的下端面并向内延伸以闭合或者缩小所述圆筒部的下开口。
在本发明的一些实施例中，所述电池本体的内部设有卷芯组件，所述卷芯组件由正极膜片、第一绝缘膜、负极膜片和第二绝缘膜依次层叠并卷绕成若干圈，每一圈的所述正极膜片均连接有伸出于所述卷芯组件外的第一极片，所述第一极片均连接在第一汇流片上，所述第一汇流片与所述第二电极端板电性 连接，每一圈的所述负极膜片均连接有伸出于所述卷芯组件外的第二极片，所述第二极片均连接在第二汇流片上，所述第二汇流片与所述第一电极端板电性连接。
在本发明的一些实施例中，所述电池本体包括桶形外壳，所述第一电极端板和所述第二电极端板分别设于所述桶形外壳的两端而围成壳体组件，所述卷芯组件容置于所述壳体组件内，所述第一汇流片夹设于所述卷芯组件与所述第二电极端板之间，所述第二汇流片夹设于所述卷芯组件与所述第一电极端板之间。
在本发明的一些实施例中，所述正极膜片和所述负极膜片的其中之一向上凸出于所述卷芯组件的整体，另一向下凸出于所述卷芯组件的整体。
在本发明的一些实施例中，所述第一极片焊接固定在所述第一汇流片上，所述第二极片焊接固定在所述第二汇流片上。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为本发明其中一种实施例的外观示意图；
图2为图1的结构分解示意图；
图3是本发明其中一种实施例的内部结构示意图；
图4是本发明另一种实施例的内部结构示意图；
图5是卷芯组件的一种实施例展开后与第一极片、第二极 片相结合的结构示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，若干的含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发 明中的具体含义。
参见图1至图4，根据本发明实施例的一种电池，包括：电池本体100，电池本体100的两端分别设有第一电极端板200和第二电极端板600，第一电极端板200上设置有连接套件300，第二电极端板600的轮廓边缘沿电池本体100的长度方向延伸且背离电池本体100而围成第一安装沉孔601；连接套件300能够与另一电池的第一安装沉孔601可拆卸连接，且连接套件300的自由端具有与第二电极端板600形成面接触的电性接触面301。其中，电池本体100可以为圆柱形，也可以为棱柱形，形状不限定。
以上结构的电池在电池本体的第一电极端板上设置连接套件，在电池本体的第二电极端板上设置与连接套件相匹配且与电池本体的轮廓尺寸相近的第一安装沉孔，相邻两个电池进行连接时，将一个电池上的连接套件安装在另一电池的第一安装沉孔上，并且连接套件的电性接触面能够与第二电极端板实现面接触，以上结构有利于增大相邻的电池相连接时的接触面积，减小电池内阻,从而达到高倍率的技术效果。
参见图2，在本发明的一些实施例中，为了将一个电池上的连接套件300与另一电池之间可以快速且牢固地可拆卸连接，第一安装沉孔601的内壁面上设有第一内螺纹602，连接套件300上设有与第一内螺纹602相匹配的第一外螺纹302。当然在其他实施例中，连接套件300与第一安装沉孔601之间的可拆卸连接结构还可以替代为卡扣连接等其他方式。
参见图3或图4，在本发明的一些实施例中，第一电极端板200的轮廓边缘沿电池本体100的长度方向延伸且背离电池 本体100而围成第二安装沉孔，连接套件300可拆卸安装在第二安装沉孔内，以便于本发明实施例的电池单独使用或者在若干串联的电池中只对电池进行更换。
参见图3或图4，在本发明的一些实施例中，为了方便将电池上的连接套件300快速地拆装，第二安装沉孔的内壁面上设有第二内螺纹201，连接套件300上设有与第二内螺纹201相匹配的第二外螺纹303。当然在其他实施例中，连接套件300与第二安装沉孔之间的可拆卸连接结构还可以替代为卡扣连接等其他方式。
参见图3，在本发明的一种实施例中，连接套件300包括圆筒部，电性接触面301位于圆筒部的下端面并向内延伸以缩小圆筒部的下开口，参见图4，在本发明的另一种实施例中，电性接触面301位于圆筒部的下端面并向内延伸并闭合圆筒部的下开口，两种实施例均能够进一步增大电性接触面301的面积，进一步减小电池的内阻。
参见图3或图4，在本发明的一些实施例中，该电池为镍氢电池，电池本体100的内部设有卷芯组件400，卷芯组件400由正极膜片401、第一绝缘膜402、负极膜片403和第二绝缘膜404依次层叠并卷绕成若干圈，其中，为了避免传统的正极膜片401只通过一个极片与第二电极端板600相连而导致内阻增大的情况，每一圈的正极膜片401均连接有伸出于卷芯组件400外的第一极片51，第一极片51均连接在第一汇流片52上， 第一汇流片52与第二电极端板600电性连接，为了避免传统的负极膜片403只通过一个极片与第一电极端板200相连而导致内阻增大的情况，每一圈的负极膜片403均连接有伸出于卷芯组件400外的第二极片53，第二极片53均连接在第二汇流片54上，第二汇流片54与第一电极端板200电性连接。从而进一步提高电池的充放电效率。
在本发明的一些实施例中，电池本体100包括桶形外壳，第一电极端板200和第二电极端板600分别设于桶形外壳的两端而围成壳体组件，其中，桶形外壳与第一电极端板200之间、桶形外壳与第二电极端板600之间均设有绝缘密封圈7，卷芯组件400容置于壳体组件内，第一汇流片52夹设于卷芯组件400与第二电极端板600之间，第二汇流片54夹设于卷芯组件400与第一电极端板200之间，从而避免电性连接不稳定的情况。
参见图5，在本发明的一些实施例中，正极膜片401和负极膜片403的其中之一向上凸出于卷芯组件400的整体，另一向下凸出于卷芯组件400的整体，从而方便将第一极片51和第二极片53向外引出，简化电池生产流程。
在本发明的一些实施例中，为了确保第一极片51与第一汇流片52能够稳固连接，第一极片51焊接固定在第一汇流片52上，为了确保第二极片53与第二汇流片54能够稳固连接，第二极片53焊接固定在第二汇流片54上。
以上所述实施例的各技术特征可以进行任意的组合，为使 描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (9)

  1. 一种电池，其特征在于，包括：
    电池本体(100)，所述电池本体(100)的两端分别设有第一电极端板(200)和第二电极端板(600)，所述第一电极端板(200)上设置有连接套件(300)，所述第二电极端板(600)的轮廓边缘沿所述电池本体(100)的长度方向延伸且背离所述电池本体(100)而围成第一安装沉孔(601)；
    所述连接套件(300)能够与另一所述电池的所述第一安装沉孔(601)可拆卸连接，且所述连接套件(300)的自由端具有与所述第二电极端板(600)形成面接触的电性接触面(301)。
  2. 根据权利要求1所述的一种电池，其特征在于：
    所述第一安装沉孔(601)的内壁面上设有第一内螺纹(602)，所述连接套件(300)上设有与第一内螺纹(602)相匹配的第一外螺纹(302)。
  3. 根据权利要求1所述的一种电池，其特征在于：
    所述第一电极端板(200)的轮廓边缘沿所述电池本体(100)的长度方向延伸且背离所述电池本体(100)而围成第二安装沉孔，所述连接套件(300)可拆卸安装在所述第二安装沉孔内。
  4. 根据权利要求3所述的一种电池，其特征在于：
    所述第二安装沉孔的内壁面上设有第二内螺纹(201)， 所述连接套件(300)上设有与所述第二内螺纹(201)相匹配的第二外螺纹(303)。
  5. 根据权利要求1所述的一种电池，其特征在于：
    所述连接套件(300)包括圆筒部，所述电性接触面(301)位于所述圆筒部的下端面并向内延伸以闭合或者缩小所述圆筒部的下开口。
  6. 根据权利要求1-5任一项所述的一种电池，其特征在于：
    所述电池本体(100)的内部设有卷芯组件(400)，所述卷芯组件(400)由正极膜片(401)、第一绝缘膜(402)、负极膜片(403)和第二绝缘膜(404)依次层叠并卷绕成若干圈，每一圈的所述正极膜片(401)均连接有伸出于所述卷芯组件(400)外的第一极片(51)，所述第一极片(51)均连接在第一汇流片(52)上，所述第一汇流片(52)与所述第二电极端板(600)电性连接，每一圈的所述负极膜片(403)均连接有伸出于所述卷芯组件(400)外的第二极片(53)，所述第二极片(53)均连接在第二汇流片(54)上，所述第二汇流片(54)与所述第一电极端板(200)电性连接。
  7. 根据权利要求6所述的一种电池，其特征在于：
    所述电池本体(100)包括桶形外壳，所述第一电极端板(200)和所述第二电极端板(600)分别设于所述桶形外壳的两端而围成壳体组件，所述卷芯组件(400)容置于所述壳体组件内，所述第一汇流片(52)夹设于所述卷芯组件(400) 与所述第二电极端板(600)之间，所述第二汇流片(54)夹设于所述卷芯组件(400)与所述第一电极端板(200)之间。
  8. 根据权利要求6所述的一种电池，其特征在于：
    所述正极膜片(401)和所述负极膜片(403)的其中之一向上凸出于所述卷芯组件(400)的整体，另一向下凸出于所述卷芯组件(400)的整体。
  9. 根据权利要求6所述的一种电池，其特征在于：
    所述第一极片(51)焊接固定在所述第一汇流片(52)上，所述第二极片(53)焊接固定在所述第二汇流片(54)上。
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JPH08298107A (ja) * 1995-04-26 1996-11-12 Ricoh Co Ltd 電池及びその電極接続金具
JPH11339761A (ja) * 1998-05-25 1999-12-10 Denso Corp 車両用組み電池
JP2000138051A (ja) * 1998-10-30 2000-05-16 Sanyo Electric Co Ltd 電池及び組電池
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