CN1292935A - 棱柱形电池壳体 - Google Patents
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Abstract
有导电的壳体的棱柱形电池(10),包括有开口的长棱柱形罐(12)以及压入罐(12)开口端内及原位焊接的壳体盖子(16),盖子(16)具有沿其周边的外凸缘(34),在罐侧边的延伸方向上延伸,盖子压入罐时弹性弯曲以便为焊接提供良好的接触。盖子具有两个升高的凸耳(36)形成属于电池内部容积一部分的内室。凸耳(36)的设置可防止密封件/通气组件(18,20,22,24,26)的转动。一个实施例还在一个凸耳(36)内具有堵塞的充填孔(46)。还公开了相应的制造方法。
Description
本发明涉及带有棱柱形壳体的电池及其结构。
棱柱形电池的横截面为棱形，而不是圆形。棱柱形电池的实例包括可再充电的F6镍金属氢化物(NiMH)电池，它们现在用于便携式电子设备，例如手机中，其横截面为矩形。这种棱柱形电池的壳体典型地具有深拉伸(或纵向缝接的)罐，它用带有一个或多个电触点的刚性的平板盖子组件封闭。盖子典型地压入罐的开口端，直至盖子的上边缘稍稍低于罐的上边缘，以及随后在原位焊接(如用激光焊)以密封电池。壳体材料包括不锈钢或镀镍的冷轧碳钢。
罐和盖子要求精确的公差以保证沿盖子整个周边紧密的接触和焊接时密封良好。理想的是零件的尺寸保持线对线或轻微压配合以避免沿焊缝的空隙。如果过盈过大，则平板盖子可能典型地通过其触点／通气组件用的冲孔翘曲。如果盖子弯曲较大，则这些冲孔的密封是作些牺牲。如果在盖子和罐之间存在过大的局部间隙，则于由部分缺少焊接过程中用的填料使得难以获得气密性的激光焊缝。对要求高的罐和盖子要求极严格的尺寸公差有上述考虑，从而增加了部件的费用。一些现在的F6设计使用的总的罐的公差为±0．002 inch(0．05mm)，举例来说，它在深拉伸过程中很难可靠而经济地实现。
触点／通气组件典型地安装在平板盖子的圆冲孔内，它们用聚合物密封件与盖子电绝缘和密封。在制造和使用中必须注意避免触点／通气组件在其安装孔内转动，这种转动引起内部短路。
特别对于薄电池，例如普通的F6棱柱形电池，必须注意不要在焊接过程中损坏或扭曲触点／通气组件上的密封材料，因为密封件的边缘非常接近焊缝。限制在接近密封件区域的热量可以降低密封件的扭曲以及降低密封处漏气导致的报废率，但仍会引起焊缝漏气导致的高报废率。
许多标准的棱柱形电池的尺寸，例如F6电池，要求它们的触点相对于它们罐的开口端边缘具有特殊的高度。当盖子在原位焊接后，有时在盖子和外触点之间增加隔片以控制此尺寸。理想的是，盖子精确定位在尽可能向外，以保证供活性材料用的最大的电池内部容积。
本发明提供了棱柱形壳体盖子结构，它可以有效地降低密封过程对盖子／罐尺寸公差的敏感性，可以使用较高的焊接热而不损坏密封以及可以在某些实施例中借助使用升高的盖子部分提供附加的内部电池容积和防止密封件转动。
本发明的特点是具有带外凸缘的棱柱形电池壳体盖子，凸缘一般沿罐侧边的延伸方向围绕盖子的周边延伸。
根据本发明的一个方面，提供了一种具有导电的壳体的棱柱形电池，包括棱柱形罐和壳体盖子组成。罐的开口端被限定在罐的延伸的相对的侧边之间，以及壳体盖子位于罐的开口处相对的侧边之间并对其密封，这样罐与盖子一起封闭一个容积。盖子具有围绕其周边的外凸缘，凸缘一般沿罐侧边的延伸方向延伸。凸缘和罐的侧边一起限定了凸缘远边缘处的焊缝。
最好，盖子具有升高部分，形成与封闭容积液压连通的内室，以保证供活性材料和／或电解液用的附加的内部电池容积。
特殊用途的电池可以非常薄，例如，在现有最佳实施例中，棱柱形罐在其开口端相对的侧边之间的最小尺寸小于约6．0mm。在说明的实施例中，该尺寸约5．0mm。
本发明的不同的实施例可能包含以下一个或多个特点。盖子是冲压金属制成的。盖子是带有半径隅角的矩形的。盖子凸缘是向外斜的以保证凸缘与壳体罐侧边之间的压力。升高部分具有通过盖子的充填孔及塞子(即小金属球)，塞子放在充填孔内使其密封。
在一些实施例中，盖子开有通孔以及电池具有连接在盖子孔处的外电触点。在触点和盖子之间的密封件使触点与盖子电绝缘。在一些情况下，升高部分设置得可连接密封件以防止密封件相对于盖子转动。在一个实施例中，盖子具有这样两个升高部分，密封件位于其间和受此两个升高部分约束而阻止转动。
最好，凸缘在罐侧边延伸方向上的高度至少为盖子公称厚度的3倍。
根据本发明的另一方面，本发明还提供了一种制造带有导电的棱柱形电池壳体的电池的方法，该方法包括以下步骤：a)将壳体盖子(具有适当上述凸缘的)压入长棱柱形罐的开口端，以封闭容积，以及b)焊接接缝，以密封盖子到罐上。
焊接步骤可用例如施加激光束指向罐侧边的延伸方向上的接缝处。
典型的是，压入步骤包括在罐的开口端处向外弹性弯曲罐的侧边。
在一些情况下，升高部分具有充填孔(如同上述)，本方法还包括在焊接步骤之后的以下步骤：c)通过充填孔向封闭容积添加电解液；以及d)堵塞充填孔以密封封闭容积，在堵塞之前，可通过充填孔向封闭容积充入升高的试验压力。
本发明的其他特点和优点可通过本发明实施例的陈述及权利要求书结合附图阅读而获得最佳理解，附图中：
图1和2是通过棱柱形电池壳体的纵向的剖切的正交的两个剖面图；
图3是图2盖子组件的放大图；
图4是沿图5直线4-4切取的盖子的剖面图；
图5是盖子的顶视图；
图6是图2区域6的放大图，没有示出绝缘子32；
图7是第二实施例的说明图，通过盖子的升高部分的充填孔被堵塞；
图8是图3剖面图所示盖子组件的顶视图。
参见图1和2，F6棱柱形电池10具有壳体组件，包括深拉伸的镀镍的碳钢罐12和盖子组件14。电池的内部组件在图中未示出，但它们是标准F6电池的典型件，以及含至少两个电极。盖子组件14包括冲压的镀镍的碳钢盖子16、一塑料通气密封件18、一金属铆钉20、一垫圈22、一通气塞24和一金属触点(标记)26。装配时盖子16被压入罐12的开口端28以及沿接缝30在其整个长度附近焊接，使盖子密封至罐上。在装配之后将可热收缩的材料制的外绝缘子32放在壳体上。
参见图3和4，盖子16的公称厚度tc为约0．33mm，当冲压至总高度HL为1．62mm时，具有向盖子一宽侧边伸出的周边唇34，周边唇34的唇高度HL为约1．3mm。在盖子内还冲压出两个升高的凸耳36，各位于孔38的一侧，孔38是在盖子中心冲压出的。孔38也可以在周边唇和凸耳形成之前由盖子毛坯的外侧冲压而成。借助由盖子外侧冲压此孔时，在其内侧面形成隆脊40以及外表面41保持平坦用于密封。冲孔工序还提供了盖子外侧边处孔边缘的半径以便于密封件18的插入。铆钉20插入穿过密封件，垫圈22放置就位，以及铆钉的较小的内凸缘的成形用于保持铆钉、密封件和垫圈就位。通气塞24和标记26放置在位置上和标记被点焊在铆钉20的较大的外凸缘上。在装配完成后，密封件18和垫圈22使铆钉和标记与盖子电绝缘，而盖子与电池的阳极电连接以及标记与电池的阴极电连接。周边唇34向外斜的角度约2．5°，以保证与壳体罐的内表面牢固的接合，详见下面对图6的讨论。
如图5所示，升高的凸耳36的侧边42面向通气组件安装孔38，它是圆形的，具有半径R为约2．2mm。在密封件和标记装配到盖子上之后，这些弯曲侧边42限制椭圆的通气组件(铆钉20和与其接触的每个部件)在孔38内转动，如图8所示。除了防止密封件转动外，凸耳36在盖子的内侧边上形成空腔44(图4)，它提供了附加的电池的内部容积。凸耳36和唇部34还提高了盖子的弯曲刚性。盖子的最终总尺寸Wo和Lo相应为约5．0mm和15．8mm，稍稍大于罐在其开口端相对的侧边之间的相应的尺寸。盖子16的4个隅角具有外半径r为约0．75mm以与罐开口端隅角处的类似的内半径匹配。
参见图6，当盖子被压入罐12的开口端时，盖子16向外斜的唇部34向内弹性弯曲，而罐的侧边向外弯曲。这些弹性弯曲提供了罐与盖子之间的接触载荷，即使在较高的尺寸公差时也可保证接缝30的紧密配合。例如，罐12可以用0．25°的侧倾斜角拉伸，以及每个尺寸的开口公差为±0．04inch(0．1mm)，而仍保持可靠的压配合。被压入位置时，盖子沿长度Xc为约0．6mm与罐12的内表面接触(最好为两个接合壁中较重壁厚度的约3倍)。在盖子被压入罐中直至唇部34与罐12的边缘齐平，如图所示之后，盖子和罐用激光焊接到一起，激光沿箭头A方向指向接缝30处形成虚线B所示熔融区，以及密封此接缝。激光束沿接缝30的长度前进(或电池或激光移动)以完成焊接。
参见图7，盖子组件的第二实施例14’，它具有盖子16’，在一个升高的凸耳36上具有堵塞的充填孔46。充填孔用于将盖子组件14’焊接到罐上后的压力试验和用电解液充电池，以及随后用不锈钢球48(直径约1．6mm)，它可用激光焊接或钨极惰性气体保护焊接在原位焊接，未堵塞住。
Claims (17)
1．一种带有导电壳体的棱柱形电池，包括：
一个棱柱形的罐，罐的开口端限定在其相对的侧边之间；以及
壳体盖子，设置在罐开口端的相对的侧边之间和对其密封，该罐和盖子一起封闭一个容积，盖子具有沿其周边的外凸缘，该凸缘通常在罐侧边的延伸方向上延伸，以及限定一条焊缝。
2．按照权利要求1的棱柱形电池，其特征在于所述的盖子具有升高的部分，它限定一个内室与封闭的容积液压连通。
3．按照权利要求1的棱柱形电池，其特征在于所述的棱柱形的罐在其开口端相对的侧边之间的最小尺寸小于约6．0mm。
4．按照权利要求1的棱柱形电池，其特征在于所述的盖子是冲压金属的。
5．按照权利要求1的棱柱形电池，其特征在于所述的盖子是带有半径隅角的矩形的。
6．按照权利要求2的棱柱形电池，其特征在于所述的盖子具有通孔，所述的电池还包括：
连接在盖子孔处的外电触点；以及
设置在触点和盖子之间的密封件，用以使触点与盖子电绝缘。
7．按照权利要求6的棱柱形电池，其特征在于所述的升高部分设置得可连接密封件以防止密封件相对于盖子转动。
8．按照权利要求7的棱柱形电池，它具有两个上述升起部分，密封件位于其间和受此两个升高部分约束而阻止转动。
9．按照权利要求1的棱柱形电池，其特征在于所述的盖子凸缘是向外斜的以保证凸缘和壳体罐的侧边之间的压力。
10．按照权利要求2的棱柱形电池，其特征在于所述的升高部分限定一个充填通孔，电池还具有位于通孔中的塞子，用于密封充填孔。
11．按照权利要求10的棱柱形电池，其特征在于所述的塞子具有金属球。
12．按照权利要求1的棱柱形电池，其特征在于所述的凸缘在罐侧边的延伸方向上的高度至少为盖子公称厚度的3倍。
13．一种制造带有导电的棱柱形电池壳体的电池的方法，包括以下步骤：
将壳体盖子压入长棱柱形罐的开口端以封闭一个容积，开口端被限定在罐延伸的相对的侧边之间，盖子具有沿其周边的外凸缘，凸缘通常在罐侧边的延伸方向上延伸以及限定一条接缝，盖子具有升高部分限定其中一个内室与封闭容积液压贯通；以及
焊接该接缝以密封盖子到罐上。
14．按照权利要求13的方法，其特征在于所述的焊接步骤包括把激光束施加到指向罐侧边的延伸方向上的接缝处。
15．按照权利要求13的方法，其特征在于所述的压入步骤包括在罐的开口端处罐侧边的弹性弯曲。
16．按照权利要求13的方法，其特征在于所述的升高部分限定一个充填通孔，该方法还包括在焊接之后，
通过充填孔添加电解液至封闭容积；以及
堵塞充填孔以密封封闭容积的步骤。
17．按照权利要求16的方法，它还包括在堵塞之前，
通过填充孔充入升高的试验压力至封闭容积的步骤。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/038,326 US6001504A (en) | 1998-03-11 | 1998-03-11 | Prismatic battery housing |
| US09/038,326 | 1998-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1292935A true CN1292935A (zh) | 2001-04-25 |
Family
ID=21899309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99803889XA Pending CN1292935A (zh) | 1998-03-11 | 1999-03-04 | 棱柱形电池壳体 |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6001504A (zh) |
| EP (1) | EP1062704B1 (zh) |
| JP (1) | JP2002507047A (zh) |
| KR (1) | KR20010041724A (zh) |
| CN (1) | CN1292935A (zh) |
| AT (1) | ATE405955T1 (zh) |
| AU (1) | AU2983399A (zh) |
| CA (1) | CA2322897A1 (zh) |
| DE (1) | DE69939372D1 (zh) |
| TW (1) | TW416162B (zh) |
| WO (1) | WO1999046825A1 (zh) |
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| CN100375321C (zh) * | 2002-02-21 | 2008-03-12 | 吉莱特公司 | 具有扁平外壳的碱性电池组 |
| CN102280598A (zh) * | 2011-01-27 | 2011-12-14 | 丁振荣 | 锂电池盖帽、制作方法及锂电池 |
| CN104094450A (zh) * | 2012-02-22 | 2014-10-08 | 日立汽车系统株式会社 | 方形二次电池 |
| CN113479053A (zh) * | 2015-04-13 | 2021-10-08 | Cps 科技控股有限公司 | 汇流条载体的柔性肋 |
| CN114976406A (zh) * | 2021-02-19 | 2022-08-30 | 三星Sdi株式会社 | 可再充电电池 |
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- 1999-03-04 WO PCT/US1999/004781 patent/WO1999046825A1/en not_active Application Discontinuation
- 1999-03-04 CA CA002322897A patent/CA2322897A1/en not_active Abandoned
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375321C (zh) * | 2002-02-21 | 2008-03-12 | 吉莱特公司 | 具有扁平外壳的碱性电池组 |
| US7242838B2 (en) | 2003-12-19 | 2007-07-10 | Hon Hai Precision Industry Co., Ltd. | Backlight module with reflection member |
| CN102280598A (zh) * | 2011-01-27 | 2011-12-14 | 丁振荣 | 锂电池盖帽、制作方法及锂电池 |
| CN102280598B (zh) * | 2011-01-27 | 2014-03-12 | 丁振荣 | 锂电池盖帽、制作方法及锂电池 |
| CN104094450A (zh) * | 2012-02-22 | 2014-10-08 | 日立汽车系统株式会社 | 方形二次电池 |
| CN104094450B (zh) * | 2012-02-22 | 2016-11-16 | 日立汽车系统株式会社 | 方形二次电池 |
| CN113479053A (zh) * | 2015-04-13 | 2021-10-08 | Cps 科技控股有限公司 | 汇流条载体的柔性肋 |
| CN114976406A (zh) * | 2021-02-19 | 2022-08-30 | 三星Sdi株式会社 | 可再充电电池 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69939372D1 (de) | 2008-10-02 |
| WO1999046825A1 (en) | 1999-09-16 |
| EP1062704A1 (en) | 2000-12-27 |
| CA2322897A1 (en) | 1999-09-16 |
| ATE405955T1 (de) | 2008-09-15 |
| EP1062704A4 (en) | 2004-08-04 |
| US6001504A (en) | 1999-12-14 |
| EP1062704B1 (en) | 2008-08-20 |
| KR20010041724A (ko) | 2001-05-25 |
| AU2983399A (en) | 1999-09-27 |
| TW416162B (en) | 2000-12-21 |
| JP2002507047A (ja) | 2002-03-05 |
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