CN204348855U - 一种防短路过冲锂电池 - Google Patents

一种防短路过冲锂电池 Download PDF

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CN204348855U
CN204348855U CN201420772673.4U CN201420772673U CN204348855U CN 204348855 U CN204348855 U CN 204348855U CN 201420772673 U CN201420772673 U CN 201420772673U CN 204348855 U CN204348855 U CN 204348855U
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lithium battery
overshoot
circuit
against short
matrix
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舒丽燕
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Zhang Yuqing
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    • 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

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Abstract

本实用新型公开了一种防短路过冲锂电池，包括壳体，及填充于内侧的电解液；及安装于壳体内侧的电芯单元，及与电芯单元配合安装的正极片和负极片；所述正极片和负极片由基体和伸缩装置构成；所述伸缩装置安装于基体中部；所述基体由上部和下部构成；伸缩装置由弹性机构和热胀冷缩包组成；所述弹性机构安装于上部和下部之间；所述上部和下部外围固定有保护机构。本实用新型的防短路过冲锂电池，一旦发生过冲或短路情况，正极片和负极片马上产生高温，因为高温环境下，热胀冷缩包内的气体热胀冷缩，将导电装置上顶，上部和下部分离，即可断开充电电路，防止鼓包现象。

Description

一种防短路过冲锂电池
技术领域
本实用新型属于锂电池技术领域，具体涉及一种防短路过冲锂电池。
背景技术
锂电池可以分为锂金属电池和锂离子电池；锂离子电池不含有金属态的锂，并且是可以充电的；锂电池是一类由锂金属或锂合金为负极材料、使用非水电解质溶液的电池，其使用以下反应：Li+MnO2=LiMnO2该反应为氧化还原反应，放电；锂金属电池一般是使用二氧化锰为正极材料、金属锂或其合金金属为负极材料、使用非水电解质溶液的电池；现有技术中的锂电池如果过冲或短路容易产生鼓包的现象，造成电池的损坏。
发明内容
（一）要解决的技术问题
为解决上述问题，本实用新型提出了一种防短路过冲锂电池，通过自动控温机构，进行温度控制，避免造成长时间过冲或短路造成鼓包。
（二）技术方案
本实用新型的防短路过冲锂电池，包括壳体，及填充于内侧的电解液；及安装于壳体内侧的电芯单元，及与电芯单元配合安装的正极片和负极片；所述正极片和负极片由基体和伸缩装置构成；所述伸缩装置安装于基体中部；所述基体由上部和下部构成；伸缩装置由弹性机构和热胀冷缩包组成；所述弹性机构安装于上部和下部之间；所述上部和下部外围固定有保护机构。
进一步地，所述弹性机构由弹簧和弹簧固定罩组成。
进一步地，所述热胀冷缩包由橡胶球内侧填充氮气组成。
进一步地，所述下部的顶部一体制成有导电装置；所述导电装置两侧设置有限位槽。
（三）有益效果
本实用新型与现有技术相比较，其具有以下有益效果：本实用新型的防短路过冲锂电池，一旦发生过冲或短路情况，正极片和负极片马上产生高温，因为高温环境下，热胀冷缩包内的气体热胀冷缩，将导电装置上顶，上部和下部分离，即可断开充电电路，防止鼓包现象。
附图说明
图1是本实用新型的整体结构示意图；
图2是本实用新型的正极片和负极片结构示意图。
具体实施方式
实施例1：
如图1和图2所示，本实用新型的防短路过冲锂电池；包括壳体1，及填充于内侧的电解液2；及安装于壳体内侧的电芯单元3，及与电芯单元配合安装的正极片4和负极片5；所述正极片4和负极片5由基体6和伸缩装置构成；所述伸缩装置安装于基体6中部；所述基体6由上部8和下部9构成；伸缩装置7由弹性机构10和热胀冷缩包11组成；所述弹性机构10安装于上部8和下部9之间；所述上部8和下部9外围固定有保护机构12。
其中，所述弹性机构10由弹簧和弹簧固定罩组成；所述热胀冷缩包11由橡胶球内侧填充氮气组成；所述下部9的顶部一体制成有导电装置16；所述导电装置16两侧设置有限位槽13。
本实用新型的防短路过冲锂电池，一旦发生过冲或短路情况，正极片和负极片马上产生高温，因为高温环境下，热胀冷缩包内的气体热胀冷缩，将导电装置上顶，上部和下部分离，即可断开充电电路，防止鼓包现象。
上面所述的实施例仅仅是对本实用新型的优选实施方式进行描述，并非对本实用新型的构思和范围进行限定。在不脱离本实用新型设计构思的前提下，本领域普通人员对本实用新型的技术方案做出的各种变型和改进，均应落入到本实用新型的保护范围，本实用新型请求保护的技术内容，已经全部记载在权利要求书中。

Claims (4)

1.一种防短路过冲锂电池，包括壳体，及填充于内侧的电解液；及安装于壳体内侧的电芯单元，及与电芯单元配合安装的正极片和负极片；其特征在于：所述正极片和负极片由基体和伸缩装置构成；所述伸缩装置安装于基体中部；所述基体由上部和下部构成；伸缩装置由弹性机构和热胀冷缩包组成；所述弹性机构安装于上部和下部之间；所述上部和下部外围固定有保护机构。
2.根据权利要求1 所述的防短路过冲锂电池，其特征在于：所述弹性机构由弹簧和弹簧固定罩组成。
3.根据权利要求1 所述的防短路过冲锂电池，其特征在于：所述热胀冷缩包由橡胶球内侧填充氮气组成。
4.根据权利要求1 所述的防短路过冲锂电池，其特征在于：所述下部的顶部一体制成有导电装置；所述导电装置两侧设置有限位槽。
CN201420772673.4U 2014-12-10 2014-12-10 一种防短路过冲锂电池 Expired - Fee Related CN204348855U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110120557A (zh) * 2018-02-05 2019-08-13 宁德新能源科技有限公司 保护装置及电池

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110120557A (zh) * 2018-02-05 2019-08-13 宁德新能源科技有限公司 保护装置及电池

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