CN201523050U - 一种双向极柱的锂离子动力电池 - Google Patents

一种双向极柱的锂离子动力电池 Download PDF

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CN201523050U
CN201523050U CN2009201908386U CN200920190838U CN201523050U CN 201523050 U CN201523050 U CN 201523050U CN 2009201908386 U CN2009201908386 U CN 2009201908386U CN 200920190838 U CN200920190838 U CN 200920190838U CN 201523050 U CN201523050 U CN 201523050U
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王为希
闻人红雁
毛松科
闻人红权
孔建锋
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Ningbo Yijia Energy Science and Technology Co Ltd
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Abstract

本实用新型属于电动车的电池制造技术领域，特别涉及一种双向极柱的锂离子动力电池，包括电池盒外壳，电池盒外壳的两头分别一体成型正极压力盖、负极压力盖；正极压力盖注塑成型正极铝极柱，正极铝极柱与正极压力盖的接触处置入第一密封圈；正极压力盖还开有第一注液孔，该注液孔由第一安全盖封盖；负极压力盖注塑成型负极铝极柱，负极铝极柱与负极压力盖的接触部置入第二密封圈；负极压力盖还开有第二注液孔，该注液孔由第二安全盖封盖。本实用新型双向极柱的锂离子动力电池，使Li离子和电子能通过所有极片，且其增设了密封圈，以增强电池的密封性能，延长了使用寿命，又提高了电池的使用安全性，其可以适用于多种型号的锂离子动力电池。

Description

一种双向极柱的锂离子动力电池
【技术领域】
本实用新型属于电动车电池制造技术领域，特别涉及一种双向极柱的锂离子动力电池。
【背景技术】
电池是电动车的“心脏”，电池的性能直接关系到电动车的性能和质量。现有电池的结构如下：其电池盒外壳呈长形方柱状，于一侧面开口，电池的内部部件通过该开口置入，该开口由盖子密封，盖子上设有一对铝极柱，两铝极柱与置于电池盒内的同一极片相连，两铝极柱凸出于盖子的部分各与一导电条相连。
现有的电池结构存在以下缺陷。两极柱引出头处于同一方向，而在电池在充放电过程中，正极的Li离子只通过靠近极柱那一部分极片(仅局部)，因为像离子或电子的颗料运动通常是以最短路径为路线的。因此，当两极柱处于同一方向时，离子运行的路径通常是在极片的上部分，而很少进入极片的下部分。这样，只有一部分处于工作状态的极片不仅容易老化，降低使用寿命，而且影响电池的充放电效果。为解决此技术问题，目前也出现一些双向引出极柱的电池，但目前此类电池的密封性能差，而致使电池的使用寿命短。
【发明内容】
本实用新型公开了一种双向极柱的锂离子动力电池，其解决了现有技术由于电池存在密封性能差，从而降低使用寿命的技术问题。
为解决上述技术问题，本实用新型所采取的技术方案：一种双向极柱的锂离子动力电池，包括电池盒外壳，电池盒外壳的两头分别一体成型正极压力盖、负极压力盖；正极压力盖注塑成型正极铝极柱，正极铝极柱与正极压力盖的接触处置入第一密封圈；正极压力盖还开有第一注液孔，该注液孔由第一安全盖封盖；负极压力盖注塑成型负极铝极柱，负极铝极柱与负极压力盖的接触部置入第二密封圈；负极压力盖还开有第二注液孔，该注液孔由第二安全盖封盖。
所述的双向极柱的锂离子动力电池，正极铝极柱由正极上极柱与正极下极柱通过铆钉螺接而成，铆钉的外头垫入平垫及第三密封圈，正极上极柱与正极压力盖的接触部形成一道环槽，环槽内置入所述的第一密封圈。
所述的双向极柱的锂离子动力电池，电池盒外壳的两端部分别外罩一透明罩。
所述的双向极柱的锂离子动力电池，电池盒外壳的外壁形成横向均匀排布的数条加强筋。
所述的双向极柱的锂离子动力电池，的加强筋上形成定位凸点，与该加强筋相邻侧壁的相应加强筋形成定位孔，定位孔与定位凸点大小、形状相适配。
本实用新型双向极柱的锂离子动力电池，使Li离子和电子能通过所有极片，且其增设了密封圈，以增强电池的密封性能，延长了使用寿命，又提高了电池的使用安全性，其可以适用于多种型号的锂离子动力电池。
【附图说明】
图1为本实用新型的结构示意图。
图2为图1的A部放大图。
图3为图1的B部放大图。
【具体实施方式】
下面结合附图对本实用新型作详细说明。
如图1-3所示，电池盒外壳1呈长形方柱状，其四周外壁形成横向均匀排布的加强筋17，以增强电池盒外壳的强度。于某几根加强筋17上形成定位凸点18，与该加强筋17相邻侧壁的相应加强筋形成相对应的定位孔，定位孔与定位凸点18大小、形状相适配。当两个电池盒组装时，通过第一电池盒外壳的定位凸点陷入第二电池盒外壳相应的定位孔而完成。
于电池盒外壳1的两头分别一体成型正极压力盖2、负极压力盖11。
正极压力盖2的中部注塑成型正极上极柱3，正极上极柱3与正极压力盖2的接触部形成一道环槽，环槽内置入圆形密封圈8。正极上极柱3的内侧面与正极下极柱4贴合，两者间形成相对应的螺纹孔，螺纹孔内伸入铆钉5，将两者铆接，构成一个整体的正极铝极柱。在安装过程当中，铆钉将上、下极柱通过镙纹锁紧，使上、下极柱准确定位，方便安装。铆钉5的外头垫入平垫6及方形密封圈7，方形密封圈7处于平垫6之内。电池盒外壳1的该头外部扣接正极透明罩9，以外界灰尘、水滴等对电池的影响。正极压力盖2还开有注液孔15，注液孔15由安全盖2封盖。
负极压力盖14中间注塑成型负极铝极柱11，负极铝极柱11与负极压力盖14的接触部形成一道环槽，该环槽内置入圆形密封圈12。负极压力盖14还开有注液孔16，注液孔16由安全盖封盖。电池盒外壳4的该头外部扣接负极透明罩10，以防尘、防水。
上述只是对本实用新型优选实施例所作的说明，而并非作为对本实用新型的限制，本技术领域的普通技术人员应当认识到，任何对本实用新型所作的变换、变型都落入本实用新型的保护范围。

Claims (5)

1.一种双向极柱的锂离子动力电池，包括电池盒外壳，其特征在于：电池盒外壳的两头分别一体成型正极压力盖、负极压力盖；正极压力盖注塑成型正极铝极柱，正极铝极柱与正极压力盖的接触处置入第一密封圈；正极压力盖还开有第一注液孔，该注液孔由第一安全盖封盖；
负极压力盖注塑成型负极铝极柱，负极铝极柱与负极压力盖的接触部置入第二密封圈；负极压力盖还开有第二注液孔，该注液孔由第二安全盖封盖。
2.如权利要求1所述的双向极柱的锂离子动力电池，其特征是：所述的正极铝极柱由正极上极柱与正极下极柱通过铆钉螺接而成，铆钉的外头垫入平垫及第三密封圈，正极上极柱与正极压力盖的接触部形成一道环槽，环槽内置入所述的第一密封圈。
3.如权利要求1所述的双向极柱的锂离子动力电池，其特征是：电池盒外壳的两端部分别外罩一透明罩。
4.如权利要求1或3所述的双向极柱的锂离子动力电池，其特征是：电池盒外壳的外壁形成横向均匀排布的数条加强筋。
5.如权利要求4所述的双向极柱的锂离子动力电池，其特征是：所述的加强筋上形成定位凸点，与该加强筋相邻侧壁的相应加强筋形成定位孔，定位孔与定位凸点大小、形状相适配。
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WO2011018018A1 (zh) * 2009-08-10 2011-02-17 Wenren Hongyan 双向极柱的锂离子动力电池

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WO2011018016A1 (zh) * 2009-08-10 2011-02-17 Wenren Hongyan 双头引出极柱的高密封性锂离子动力电池
WO2011018018A1 (zh) * 2009-08-10 2011-02-17 Wenren Hongyan 双向极柱的锂离子动力电池

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