CN201877526U - 锂离子电池 - Google Patents

锂离子电池 Download PDF

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CN201877526U
CN201877526U CN2010206693557U CN201020669355U CN201877526U CN 201877526 U CN201877526 U CN 201877526U CN 2010206693557 U CN2010206693557 U CN 2010206693557U CN 201020669355 U CN201020669355 U CN 201020669355U CN 201877526 U CN201877526 U CN 201877526U
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lithium ion
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耿继兵
邓平华
王愈进
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Dongguan Amperex Technology Ltd
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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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
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    • H—ELECTRICITY
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    • 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
    • H01M50/147—Lids or covers
    • H01M50/155—Lids or covers characterised by the material
    • H01M50/157—Inorganic material
    • H01M50/159—Metals
    • 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
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
    • 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
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • 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
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
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    • 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
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/198—Sealing members characterised by the material characterised by physical properties, e.g. adhesiveness or hardness
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Abstract

本实用新型公开了一种锂离子电池，其包括电池壳体、收容于电池壳体内的电池芯、灌注于电池壳体内的电解液，以及密封电池壳体的电池顶盖。电池壳体设有法兰边，电池顶盖设有与电池壳体的法兰边对应的裙边，电池顶盖的裙边包住电池壳体的法兰边，裙边和法兰边一起卷曲挤压实现电池壳体和电池顶盖的良好密封。本实用新型锂离子电池的电池壳体和电池顶盖之间的密封效果良好，且可快速封装。

Description

锂离子电池
技术领域
本实用新型属于锂离子电池领域，更具体地说，本实用新型涉及一种具有理想密封性能的锂离子电池。
背景技术
随着现代社会和科技的发展，各种移动设备，如摄像机、笔记本电脑、便携式DVD和数码相机等都有了越来越广泛的应用。锂离子电池因具有能量密度高、工作电压高和使用寿命长等优点，也越来越受到人们的青睐，成为移动设备的理想电源，在航空、航天、航海、汽车、医疗设备等领域中也逐步取代了其他的传统电池。
锂离子电池一般包括电池壳体、收容于电池壳体内的电池芯、灌注于电池壳体内的电解液，以及密封电池壳体的电池顶盖。现有锂离子电池中的电池顶盖一般都是通过激光焊接密封电池壳体，但是，通过激光焊接密封连接电池壳体和电池顶盖至少存在以下缺陷：首先，激光焊接的效率低，导致封装慢、工时成本高；其次，激光焊接容易产生缺陷，如果焊接位置贴合不紧密或者焊接位置有杂质，就更容易产生缺陷，导致密封效果完全消失。
有鉴于此，确有必要提供一种具有良好密封性能且可快速封装的锂离子电池。
发明内容
本实用新型的目的在于：提供一种具有良好密封性能且可快速封装的锂离子电池。
为了实现上述目的，本实用新型提供了一种锂离子电池，其包括电池壳体、收容于电池壳体内的电池芯、灌注于电池壳体内的电解液，以及密封电池壳体的电池顶盖。电池壳体设有法兰边，电池顶盖设有与电池壳体的法兰边对应的裙边，电池顶盖的裙边包住电池壳体的法兰边，裙边和法兰边一起卷曲挤压实现电池壳体和电池顶盖的良好密封。
作为本实用新型锂离子电池的一种改进，所述电池壳体和电池顶盖是由相同的材料制成。
作为本实用新型锂离子电池的一种改进，所述电池壳体和电池顶盖均由铝材或钢材制成。
作为本实用新型锂离子电池的一种改进，所述电池壳体和电池顶盖的横截面为圆形或方形。
作为本实用新型锂离子电池的一种改进，所述电池壳体的法兰边和电池顶盖的裙边之间设有填充物。
作为本实用新型锂离子电池的一种改进，所述填充物是由不与电解液反应的塑料或橡胶材料制成。
作为本实用新型锂离子电池的一种改进，所述填充物是由聚丙烯塑料、氟塑料或氟橡胶制成。
作为本实用新型锂离子电池的一种改进，所述填充物的长度小于或等于所述电池壳体的法兰边的宽度。
作为本实用新型锂离子电池的一种改进，所述填充物的厚度小于2mm。
相对于现有技术，本实用新型锂离子电池至少具有以下优点：电池壳体和电池顶盖之间的密封效果良好且可快速封装，测试结果表明，电池壳体和电池顶盖的封口速度可达每分钟800个以上。
附图说明
下面结合附图和具体实施方式，对本实用新型锂离子电池及其有益技术效果进行详细说明。
图1A至1D所示为本实用新型锂离子电池的电池壳体和电池顶盖的封装过程示意图。
图2为按照图1A至1D所示封装过程组装后的本实用新型锂离子电池的剖视示意图。
图3为图2所示锂离子电池的局部放大示意图。
具体实施方式
请参阅图1至图3所示，本实用新型锂离子电池包括电池壳体10、收容于电池壳体10内的电池芯40、灌注于电池壳体10内的电解液，以及密封电池壳体10的电池顶盖20。
电池壳体10由铝材或钢材制成，其横截面可以是圆形、方形或其他适当的形状。电池壳体10的顶端周边向外延伸形成法兰边102。
电池顶盖20是由与电池壳体10相同的材料制成，根据本实用新型的一个实施方式，电池顶盖20也是由铝材或钢材制成。电池顶盖20的形状和尺寸与电池壳体10的形状和尺寸相适配，围绕电池顶盖20的周边设有一圈裙边202，当电池顶盖20置于电池壳体10上时，裙边202刚好可以包覆住电池壳体10的法兰边102。
为了改善锂离子电池的电池壳体10和电池顶盖20之间的密封性能，电池壳体10和电池顶盖20之间设有填充物30。填充物30的长度小于或等于电池壳体10的法兰边102的宽度，厚度小于2mm。填充物30是由不与电池壳体10中的电解液反应的材料制成，具有良好的变形能力。根据本实用新型锂离子电池的一个实施方式，填充物30是由塑料或橡胶材料制成，例如可以是由聚丙烯塑料、氟塑料或氟橡胶制成。
以下结合图1至图3详细说明本实用新型锂离子电池的组装过程，其中，图1仅示出了锂离子电池一侧的电池壳体10、电池盖帽20和填充物30。本实用新型锂离子电池的具体组装过程为：将组装好的电池芯40置于电池壳体10中；向电池壳体10内灌注电解液；将电池顶盖20置于电池壳体10上，填充物30置于电池壳体10与电池顶盖20之间；将电池顶盖20的裙边202弯曲约90度，使其包住电池壳体10的法兰边102；以及一起卷曲挤压电池壳体10的法兰边102和电池顶盖20的裙边202，填充物30通过变形填满电池壳体10的法兰边102和电池顶盖20的裙边202之间的空隙，从而实现电池壳体10和电池顶盖20之间的良好密封。
结合上面对本实用新型锂离子电池的具体实施方式的描述可以看出：本实用新型锂离子电池的电池壳体10和电池顶盖20之间的密封性能良好且可快速封装，测试结果表明，电池壳体10和电池顶盖20的封口速度可达每分钟800个以上。
根据上述原理，本实用新型还可以对上述实施方式进行适当的变更和修改。因此，本实用新型并不局限于上面揭示和描述的具体实施方式，对本实用新型的一些修改和变更也应当落入本实用新型的权利要求的保护范围内。此外，尽管本说明书中使用了一些特定的术语，但这些术语只是为了方便说明，并不对本实用新型构成任何限制。

Claims (9)

1.一种锂离子电池，其包括电池壳体、收容于电池壳体内的电池芯、灌注于电池壳体内的电解液，以及密封电池壳体的电池顶盖，其特征在于：电池壳体设有法兰边，电池顶盖设有与电池壳体的法兰边对应的裙边，电池顶盖的裙边包住电池壳体的法兰边，裙边和法兰边一起卷曲挤压实现电池壳体和电池顶盖的良好密封。
2.根据权利要求1所述的锂离子电池，其特征在于：所述电池壳体和电池顶盖是由相同的材料制成。
3.根据权利要求1所述的锂离子电池，其特征在于：所述电池壳体和电池顶盖均由铝材或钢材制成。
4.根据权利要求1所述的锂离子电池，其特征在于：所述电池壳体和电池顶盖的横截面为圆形或方形。
5.根据权利要求1所述的锂离子电池，其特征在于：所述电池壳体的法兰边和电池顶盖的裙边之间设有填充物。
6.根据权利要求5所述的锂离子电池，其特征在于：所述填充物是由不与电解液反应的塑料或橡胶材料制成。
7.根据权利要求5所述的锂离子电池，其特征在于：所述填充物是由聚丙烯塑料、氟塑料或氟橡胶制成。
8.根据权利要求5所述的锂离子电池，其特征在于：所述填充物的长度小于或等于所述电池壳体的法兰边的宽度。
9.根据权利要求5所述的锂离子电池，其特征在于：所述填充物的厚度小于2mm。
CN2010206693557U 2010-12-20 2010-12-20 锂离子电池 Expired - Lifetime CN201877526U (zh)

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CN104953182A (zh) * 2015-05-25 2015-09-30 安徽天康(集团)股份有限公司 解决方型钢壳动力锂离子电池侧面封装密封问题的方法
US9647471B2 (en) 2014-10-17 2017-05-09 Trion Energy Solutions Corp. Battery management system and method
US9646774B2 (en) 2014-06-05 2017-05-09 Trion Energy Solutions Corp. Power wafer
CN115347286A (zh) * 2021-05-14 2022-11-15 中创新航科技股份有限公司 电池制造方法及电池

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KR20140109693A (ko) * 2013-03-06 2014-09-16 삼성에스디아이 주식회사 이차 전지 팩
CN103474599B (zh) 2013-09-15 2018-08-31 宁德新能源科技有限公司 具有理想安全性能的锂离子电池和电池包

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JP4491753B2 (ja) * 2007-11-30 2010-06-30 トヨタ自動車株式会社 密閉型電池

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9646774B2 (en) 2014-06-05 2017-05-09 Trion Energy Solutions Corp. Power wafer
US9647471B2 (en) 2014-10-17 2017-05-09 Trion Energy Solutions Corp. Battery management system and method
CN104953182A (zh) * 2015-05-25 2015-09-30 安徽天康(集团)股份有限公司 解决方型钢壳动力锂离子电池侧面封装密封问题的方法
CN104953182B (zh) * 2015-05-25 2018-03-30 安徽天康(集团)股份有限公司 解决方型钢壳动力锂离子电池侧面封装密封问题的方法
CN115347286A (zh) * 2021-05-14 2022-11-15 中创新航科技股份有限公司 电池制造方法及电池
CN115347286B (zh) * 2021-05-14 2024-02-27 中创新航科技股份有限公司 电池制造方法及电池

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