CN110931667A - 高容量锂电池盖板 - Google Patents

高容量锂电池盖板 Download PDF

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CN110931667A
CN110931667A CN202010040225.5A CN202010040225A CN110931667A CN 110931667 A CN110931667 A CN 110931667A CN 202010040225 A CN202010040225 A CN 202010040225A CN 110931667 A CN110931667 A CN 110931667A
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王文林
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Suzhou Torch Communication Computer Technology Co Ltd
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Priority to DE102020130027.1A priority patent/DE102020130027A1/de
Priority to DE202020106526.2U priority patent/DE202020106526U1/de
Priority to JP2020193210A priority patent/JP6987372B2/ja
Priority to KR1020200156450A priority patent/KR102475116B1/ko
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Abstract

一种高容量锂电池盖板，包括设有二个电极通孔的盖板主体，正极压板和负极压板分别绝缘连接在盖板主体的上面，下绝缘垫连接在盖板主体下面，位于下绝缘垫下方的正极连接片和负极连接片穿入各自对应的电极通孔中分别电接触正极压板和负极压板，所述的电极通孔是带有上凸缘的台阶通孔，套有绝缘圈的正极压板和负极压板置于各自的电极通孔中并且都垫有密封垫圈，电极通孔的上凸缘内翻压触绝缘圈，形成无焊接电极密封结构。本发明的结构合理，利用电极通孔的上凸缘内翻将绝缘圈、电极压板和密封垫圈等紧压在盖板主体中密封配合，无需任何焊接，不仅装配工艺简化，生产效率提高，不会有破裂漏液风险，密封结构的安全可靠性大大提高。

Description

高容量锂电池盖板
技术领域：本发明涉及一种锂电池配件，特别是锂电池的盖板。
背景技术：高容量锂电池的壳体空间需要尽量有效利用，相应配套的盖板可以将电极压板、密封垫圈、绝缘圈等电极组件设计装配在盖板上面，减少占用下方的壳体空间。目前这类盖板上的电极组件的密封结构都依靠焊接工艺及高强度塑料件来实现，不仅装配工艺要求高，生产繁琐，并且在工况温度变化剧烈的时候，密封结构可能变形破裂，存在漏液风险，安全可靠性还不够理想。而且，这类盖板下方的下绝缘垫、电极连接片等的连接装配也较多采用铆接、焊接形式，整体装配不够简便，影响生产效率。
发明内容：针对现有技术的不足，本发明提供一种结构合理，密封可靠的高容量锂电池盖板。
本发明包括设有二个电极通孔的盖板主体，正极压板和负极压板分别绝缘连接在盖板主体的上面，下绝缘垫连接在盖板主体下面，位于下绝缘垫下方的正极连接片和负极连接片穿入各自对应的电极通孔中分别电接触正极压板和负极压板，所述的电极通孔是带有上凸缘的台阶通孔，正极压板和负极压板置于各自的电极通孔中并且都垫有密封垫圈，正极压板和负极压板的外周都各自套有绝缘圈，电极通孔的上凸缘内翻压触绝缘圈，形成无焊接电极密封结构。
进一步的，与密封垫圈接触密封处的正极压板或负极压板的下端面上设有波纹凹痕，与密封垫圈接触密封处的电极通孔表面也设有波纹凹痕，形成密封加强结构。
进一步的，在盖板主体的下表面设有多个钩脚，下绝缘垫通过钩脚连接紧贴盖板主体；下绝缘垫的下表面设有二对扣脚，正极连接片和负极连接片都通过对应的扣脚连接在下绝缘垫下方。
本发明的结构合理，利用电极通孔的上凸缘内翻将绝缘圈、电极压板和密封垫圈等紧压在盖板主体中密封配合，无需任何焊接，不仅装配工艺简化，生产效率提高，即使在工况温度变化剧烈时，密封配合结构的变形缩放量也很小，不会有破裂漏液风险，密封结构的安全可靠性大大提高。
下面结合附图和实施例进一步说明本发明。
附图说明：图1是实施例的主示意图。
图2是实施例的立体分解示意图。
图3是图1的A-A局部剖面放大示意图。
图4是上凸缘未内翻状态的盖板主体局部剖视放大示意图。
图5是图4的俯视示意图。
图6是图3中的正极压板的仰视示意图。
图7是盖板主体和下绝缘垫的底部方向立体示意图。
图8是图1的B-B剖面放大示意图。
具体实施方式：如图1至图4所示，盖板主体1上设有二个电极通孔2，正极压板3和负极压板4分别绝缘连接在盖板主体1的上面，下绝缘垫5连接在盖板主体1下面，位于下绝缘垫5下方的正极连接片6和负极连接片7穿入各自对应的电极通孔2中分别电接触正极压板3和负极压板4。所述的电极通孔2是带有上凸缘8的台阶通孔，正极压板3和负极压板4置于各自的电极通孔2中并且都垫有密封垫圈9，正极压板3和负极压板4的外周都各自套有绝缘圈10，电极通孔2的上凸缘8内翻压触绝缘圈10，形成无焊接电极密封结构。
在本实施例中，如图5和图6所示，与密封垫圈9接触密封处的正极压板3或负极压板4的下端面上设有波纹凹痕11，与密封垫圈9接触密封处的电极通孔2表面也设有波纹凹痕11，形成密封加强结构。波纹凹痕11的存在能够更充分可靠接触密封垫圈9表面，密封性能更强。
盖板产品中的正极连接片6和负极连接片7分别直接电接触正极压板3和负极压板4，电流无需经过其它结构，内阻的稳定性强，提高锂电池的过流能力。正极压板3、负极压板4和相应绝缘圈10的外形一般可设为多边形等非圆形状，这样具有止转结构，使用可靠性更好。本实施例在盖板主体1上方、电极通孔2的上凸缘8外周盖有抱紧装饰圈14，可遮挡缝隙，美观防尘。
如图7和图8所示，在盖板主体1的下表面设有多个钩脚12，下绝缘垫5通过钩脚12连接紧贴盖板主体1。下绝缘垫5的下表面设有二对扣脚13，正极连接片6和负极连接片7都通过对应的扣脚13连接在下绝缘垫5下方。这样的连接结构无需铆接、焊接，装配中也无需专用工装，提升了锂电池盖板后工段装配的简易性、可靠性，使盖板的整体装配效率明显提高。
另外，通常在盖板主体1的中部还设有防爆机构15，常见是防爆膜结构，下绝缘垫5的中部对应位置处也需要设有多个通气孔16，在压力过高时可通过气体。

Claims (7)

1.一种高容量锂电池盖板，包括设有二个电极通孔的盖板主体，正极压板和负极压板分别绝缘连接在盖板主体的上面，下绝缘垫连接在盖板主体下面，位于下绝缘垫下方的正极连接片和负极连接片穿入各自对应的电极通孔中分别电接触正极压板和负极压板，其特征为：所述的电极通孔（2）是带有上凸缘（8）的台阶通孔，正极压板（3）和负极压板（4）置于各自的电极通孔（2）中并且都垫有密封垫圈（9），正极压板（3）和负极压板（4）的外周都各自套有绝缘圈（10），电极通孔（2）的上凸缘（8）内翻压触绝缘圈（10），形成无焊接电极密封结构。
2.根据权利要求1所述的高容量锂电池盖板，其特征为：与密封垫圈（9）接触密封处的正极压板（3）或负极压板（4）的下端面上设有波纹凹痕（11），与密封垫圈（9）接触密封处的电极通孔（2）表面也设有波纹凹痕（11），形成密封加强结构。
3.根据权利要求1或2所述的高容量锂电池盖板，其特征为：在盖板主体（1）的下表面设有多个钩脚（12），下绝缘垫（5）通过钩脚（12）连接紧贴盖板主体（1）；下绝缘垫（5）的下表面设有二对扣脚（13），正极连接片（6）和负极连接片（7）都通过对应的扣脚（13）连接在下绝缘垫（5）下方。
4.根据权利要求1或2所述的高容量锂电池盖板，其特征为：在盖板主体（1）上方、电极通孔（2）的上凸缘（8）外周盖有抱紧装饰圈（14）。
5.根据权利要求3所述的高容量锂电池盖板，其特征为：在盖板主体（1）上方、电极通孔（2）的上凸缘（8）外周盖有抱紧装饰圈（14）。
6.根据权利要求1或2所述的高容量锂电池盖板，其特征为：在盖板主体（1）的中部还设有防爆机构（15），下绝缘垫（5）的中部对应位置处设有多个通气孔（16）。
7.根据权利要求3所述的高容量锂电池盖板，其特征为：在盖板主体（1）的中部还设有防爆机构（15），下绝缘垫（5）的中部对应位置处设有多个通气孔（16）。
CN202010040225.5A 2020-01-15 2020-01-15 高容量锂电池盖板 Pending CN110931667A (zh)

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CN202010040225.5A CN110931667A (zh) 2020-01-15 2020-01-15 高容量锂电池盖板
DE102020130027.1A DE102020130027A1 (de) 2020-01-15 2020-11-13 Hochleistungslithiumbatterie-Abdeckplatte
DE202020106526.2U DE202020106526U1 (de) 2020-01-15 2020-11-13 Hochleistungslithiumbatterie-Abdeckplatte
JP2020193210A JP6987372B2 (ja) 2020-01-15 2020-11-20 高容量のリチウム電池カバープレート
KR1020200156450A KR102475116B1 (ko) 2020-01-15 2020-11-20 고용량 리튬 배터리 커버 플레이트

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