CN1376321A - 电池盒 - Google Patents
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Abstract
本发明的密封电池盒(14)可防止水分和氧气进入以及电解质外流。电池盒包括第一端(16)、与第一端相对的第二端(18)以及第一端与第二端之间延伸的侧壁(20),从而围成用于装纳一些充电锂电池的腔。第一端和侧壁为金属,其间具有基本上不透水分和氧气的连接。第二端通过接合介质可与所述侧壁接合的金属塑料叠层,其间形成基本上不透水分和氧气的连接。第二端具有沿此延伸的电连接器(40),在充电锂电池的集电体与电池盒的外侧之间形成基本上不透水分和氧气的连接。
Description
发明领域
本发明涉及充电锂电池组成的充电锂电池组的结构和组装。
发明背景
充电锂电池一般由单个电池单元封装在圆筒形金属管或薄片盒中而成。每个电池单元含有正极和负极、电解质以及正集电体和负集电体。可从封装的外侧接近到集电体，以便电连接。
因为充电锂电池所用的材料，电池必须防止水分和氧气的进入，避免不良反应。此外，使用液体电解质，包装必须能防止液体电解质的外流。一般电池密封件体积大且重，超过电池重量和体积的10％。
为满足不同的储备容量和电压规格，一般将多个锂电池通过适当的电池互连密封在塑料电池盒中。电池盒首先提供了装纳电池的结构。密封电池自身防止氧气和水分进入以及液体电解质的外流，过去未发现为锂离子电池提供气密封电池盒的必要性或有效成本。
在“薄片”盒封装的锂电池中，使用聚合物涂覆过的薄片产生了充分确保集电体出来的引线不与薄片材料接触从而“短路”的需要。沿通常已切成型的薄片盖的外边缘，该问题尤其严重，从而暴露紧靠近引线的导电薄片，导致需要保护该区中的引线。
本发明的目的是提供用于充电锂电池的、机械性能强和气密封性好的电池盒。
本发明的另一目的是提供将充电锂电池与电池盒结合的方法，无需各个电池的薄片封装，封装材料更薄。
发明概述
密封电池盒，防止水分和氧气的进入以及液体电解质的外流。电池盒包括第一端、与第一端相对的第二端以及第一端与第二端之间延伸出的侧壁，从而确定装纳一些充电锂电池的腔。
第一端和侧壁为金属，其间具有基本上不透水分和氧气的连接。
第二端是通过接合介质可与侧壁接合的金属塑料叠层，其间形成基本上不透水分和氧气的连接。第二端具有延伸的电连接器，通过它在充电锂电池的集电体与电池盒的外侧之间形成基本上不透水分和氧气的连接。
提供将充电锂电池单元组装成锂电池组的方法，充电锂电池单元具有正极和负极、电解质以及正集电体和负集电体。方法包括步骤：在气密封盒中叠加多个电池单元。
1、在相邻的电池单元之间以及在电池单元与电池盒之间，提供电绝缘隔板。
2、在所选择的正集电体与负集电体之间，形成任何所希望的电连接。
3、在所选择的集电体与电池盒的外部之间，提供电连续。
4、气密封电池盒。
附图描述
参考附图，如下描述本发明的优选实施例：
图1是以往技术的充电锂电池的部分切开的透视图；
图2是按照本发明的充电锂电池组的分解透视图；
图3是按照本发明的电池盒的第二端顶部平面图；
图4是按照本发明的电池盒的第二端底部平面图；
图5是只表示沿图3的线5-5的截面表面。
优选实施例的描述
按照本发明的充电锂电池组一般由图2的标号10表示。电池10包括叠加在电池盒14中的充电锂电池12，电池盒14具有第一端16、第二端18和侧壁20。尽管表示3个锂离子电池，实际数目可根据应用而改变。
图1表示典型的薄片包裹的锂电池12。电池包含正极22、负极24、电解质26以及分别装纳在盒32中的正和负“引线”或“集电体”28和30。引线28和30分别在正负极22、24与盒32的外侧之间，提供电连接。
充电锂电池一般包括含有锂离子的负极，但可用锂金属或锂负极合金(negative alloy)替代。然而，因为该说明书的教导可应用于锂金属或含锂离子的负极，术语“锂电池”和“锂电池组”覆盖这两种变化。
如上述背景技术所述，必须防止水分和氧气与锂电池的内部接触。过去，通过将每个锂离子电池封装在基本上不透水分和氧气即“气密封”的壳中，基于逐个电池上可实现此。例如，在图1的以往技术的锂电池12的情况下，盒32可以由适当金属薄片组成，至少在其内表面有塑料叠层涂层，优选两个表面上有塑料叠层涂层。通常选择铝作为金属薄片，然而，也可利用铜，或可形成适当厚度并具有良好的不透水分和氧气的任何其它金属。
然而，薄片盒需要相对厚的薄片，以便充分不透水分和氧气，所得到的薄片封装可达到电池重量和体积的10％。此外，如果试图将锂电池12塞入紧密装配的容器中，薄片的角部易于破裂。
按照本发明，电池盒14具有防止水分和氧气进入的功能，不同于以往技术的基本上起单个密封电池的保持器作用的电池盒。这就可使用更薄和更轻的盒32和非金属盒32例如聚合物膜。在非液体电解质的情况下，基本上不用封装，有利于将各个锂电池12相互之间与电池盒14之间仅仅电绝缘。非金属盒的优点在于，避免了在集电体或引线28和30与沿盒32边缘暴露的金属薄片之间的短路的危险。
使用液体电解质26，盒32仅仅基本上不透电解质，其要求比防止氧气或水分进入所需要满足的要求更低。因此，当“scrunched”20进入紧密盒，与典型薄片盒的情况相比，盒32可以更薄，也不易泄漏。为简化起见，应理解为“水分”，在此主要表示水，尤其是气相形式的水。
电池盒10具有第一端16和金属材料例如锡的侧壁20。第一端16与侧壁20整体形成，然而，利用任何合适的方法例如焊接或聚合物胶粘剂，组件具有可与侧壁20相连的单独第一端16更为方便。
所示的侧壁20一般是长方形结构。这不是技术规格，但仅仅适合所示的锂电池12的形状。可按所需要的选择其它形状。
按需要通过互连引线34串联或并联锂电池12。主要输出引线36将第一和最后电池12上的相反极性的非互连集电体与经电池盒14的第二端18延伸的电连接器40相互连接。另外的输出引线38将连接引线34与经第二端18通过的另外电连接器40相互连接。无需使所有电池在内部互连接，用于充电或放电目的的单独电连接器40分别用于正集电体28和负集电体30，然后按需要，外部形成电池互连。
电池盒14的第二端18必须与侧壁20密封连接，在电连接器40处使得单独电连接经过盒的外侧。
鉴于不透氧气和水分的观点，优选金属第二端18，然而需要适当绝缘密封结构，提供独立的电连接器40。发现在如下所述的电连接器40范围中，从适当改型的铜/热固/铜印刷电路板能实现适当程度的不透氧气和水分性能。
参考图3、4和5，详细描述第二端18。图3描述具有内薄片层44的内表面42，一般是铜，层叠在基本上刚性的非导电基底46例如典型热固塑料印刷电路板基底上。内薄片层42基本上在整个内表面42上延伸，除沿电连接器40周围延伸的圆形缺口48之外，形成独立的电绝缘连接器区50。
绝缘涂层52例如塑料叠层在内薄片层44上延伸，留下暴露的边缘54，边缘54沿内表面42的圆周延伸，暴露区起电连接器40的作用。暴露边缘54在第二端18与侧壁20之间形成焊接连接。
为避免氧气和水分经基底46在缺口48迁移，在缺口48上放置基本上不透水分和氧气的盖层56。盖层56可以是胶粘剂薄片，可具有面向电池盒14的非导电聚合物涂层。每个盖层56具有圆形开口58，圆形开口经其延伸并与相关的电连接器40隔开，从而暴露接点40，避免其间的导电性。
电连接器40可以是在内薄片层44与外薄片层64的相邻部分之间经基底46的电镀通孔。电连接器40在导电层内部与电池盒14的外侧之间提供电连续(continuity)。如此，对电连接器40直接进行任何所希望的电连接。然而，一般证实沿带边缘提供电端子更为方便，例如图3和5中的也是电镀通孔的电池端子60。通过导电带62电池端子60电连接到各个电连接器40。通过蚀刻外薄片层64的部分并留下独立的导电带62，在第二端18的外表面上的外薄片层64中形成导电带62。
外绝缘涂层66例如塑料叠层可涂覆在外薄片层64上，避免与外薄片层64的不希望的电接触。
电池盒14可含有与锂电池12相连的电路，例如图2的标号68所示，以监控电池充电和放电过程。另一方面，电路68可与电池端子60外部相连，而不必是电池10的一部分。
提供密封口70，以便能抽真空并用适当密封材料密封或再填充(整体或部分)。密封口70可以是由与电连接器40焊接而密封的电镀通孔。
上述描述只是示意，而非限定性的说明。对相关技术领域的技术人员而言，可对所述特定部件和技术进行改变是显而易见的。就这些变形而论，仍在如下权利要求的精神和范围内，认为被这些 所涵盖。
Claims (9)
1.防水分和氧气进入以及电解质外流的密封电池盒，所述电池盒包括：
第一端、与所述第一端相对的第二端以及所述第一端与所述第二端之间延伸的侧壁，从而围成用于装纳多个充电锂电池的腔；
所述第一端和所述侧壁为金属，其间具有基本上不透水分和氧气的连接；
所述第二端通过接合介质可与所述侧壁接合，其间形成基本上不透水分和氧气的连接；
所述第二端具有沿此延伸的电连接器，它在所述充电锂电池的集电体与所述电池盒的外侧之间形成基本上不透水分和氧气的连接；
所述第二端还具有在基本上刚性、非导电基底上叠加的基本上不透水分和氧气的金属内薄片层，所述内薄片层基本上覆盖所述所有基底，但具有多个独立的连接器区，通过所述内薄片层的各个缺口，连接器区与所述内薄片层的剩余部分电绝缘；
绝缘涂层在内薄片层上延伸，使薄片的暴露边缘在用于固定到所述侧壁的所述第二端周围延伸；
所述电连接器在所述独立的连接器区与所述电池盒的所述外侧之间延伸；
基本上不透氧气和水分的盖层覆盖所述每个缺口并具有在所述电连接器周围延伸并与之隔开的通孔。
2.按权利要求1所述的电池盒，其中：
所述第二端由薄片/塑料/薄片印刷电路板制成；
在所述薄片上的所述绝缘涂层是塑料叠层；
所述缺口是在应用所述绝缘涂层之前，蚀刻所述内薄片层而成；
所述连接器是电镀通孔；
所述第二端在沿所述内薄片层的所述基底的相对侧上具有外薄片层；
所述外薄片层通过其中合适的缝隙分成多个相互电绝缘的独立的导电带，所述每个导电带与所述各个连接器电连接，在各个电池端子上端接；和
所述第一端和第二端通过焊接与所述侧壁接合，其间形成基本上不透水分和氧气的所述连接。
3.按权利要求3所述的电池盒，还具有用于对所述电池盒抽真空的可密封口。
4.充电锂电池组，包括气密封在按权利要求1、2或3所述的电池盒中的多个充电锂电池。
5.按权利要求4所述的充电锂电池组，其中所述每个充电锂电池，包括：
正极和负极、电解质以及正集电体和负集电体；
所述充电锂电池层叠在所述电池盒中，绝缘介质插在相邻的所述电池单元以及所述电池单元与所述电池盒之间；
所述集电体串联连接，并与所述连接器相连。
6.按权利要求5所述的充电锂电池组，其中：
所述电解质为液体；
所述每个充电锂电池封装在不透非导电电解质的盒中；
各个引线经所述盒以不透电解质的方式从所述每个正集电体和负集电体延伸引出。
7.按权利要求5所述的充电锂电池组，其中所述电池盒填充密封材料。
8.按权利要求6所述的充电锂电池组，其中所述电池盒填充密封材料。
9.按权利要求6所述的充电锂电池组，在所述盒的内部还具有与所述充电锂电池相连的电路，以监控充电和放电。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/404,602 | 1999-09-24 | ||
| US09/404,602 US6337154B1 (en) | 1999-09-24 | 1999-09-24 | Battery box with a metal plastic laminate end |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1376321A true CN1376321A (zh) | 2002-10-23 |
| CN1181587C CN1181587C (zh) | 2004-12-22 |
Family
ID=23600277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB008133093A Expired - Fee Related CN1181587C (zh) | 1999-09-24 | 2000-09-22 | 电池箱 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6337154B1 (zh) |
| EP (1) | EP1218956B1 (zh) |
| JP (1) | JP3892297B2 (zh) |
| KR (1) | KR100501416B1 (zh) |
| CN (1) | CN1181587C (zh) |
| CA (1) | CA2290714C (zh) |
| DE (1) | DE60009108T2 (zh) |
| TW (1) | TW535311B (zh) |
| WO (1) | WO2001024302A1 (zh) |
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| CN101842920B (zh) * | 2007-08-14 | 2015-01-07 | 科巴西斯有限公司 | 电池组件 |
| CN104528205A (zh) * | 2014-12-26 | 2015-04-22 | 中国船舶重工集团公司第七一〇研究所 | 一种锂电池组包装箱 |
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-
2000
- 2000-09-22 JP JP2001527390A patent/JP3892297B2/ja not_active Expired - Fee Related
- 2000-09-22 EP EP00960262A patent/EP1218956B1/en not_active Expired - Lifetime
- 2000-09-22 CN CNB008133093A patent/CN1181587C/zh not_active Expired - Fee Related
- 2000-09-22 WO PCT/CA2000/001064 patent/WO2001024302A1/en active IP Right Grant
- 2000-09-22 KR KR10-2002-7003780A patent/KR100501416B1/ko not_active IP Right Cessation
- 2000-09-22 DE DE60009108T patent/DE60009108T2/de not_active Expired - Lifetime
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842920B (zh) * | 2007-08-14 | 2015-01-07 | 科巴西斯有限公司 | 电池组件 |
| CN104528205A (zh) * | 2014-12-26 | 2015-04-22 | 中国船舶重工集团公司第七一〇研究所 | 一种锂电池组包装箱 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2290714C (en) | 2004-03-23 |
| WO2001024302A1 (en) | 2001-04-05 |
| EP1218956A1 (en) | 2002-07-03 |
| CN1181587C (zh) | 2004-12-22 |
| TW535311B (en) | 2003-06-01 |
| EP1218956B1 (en) | 2004-03-17 |
| DE60009108D1 (de) | 2004-04-22 |
| KR100501416B1 (ko) | 2005-07-18 |
| US6337154B1 (en) | 2002-01-08 |
| JP2003510789A (ja) | 2003-03-18 |
| CA2290714A1 (en) | 2001-03-24 |
| JP3892297B2 (ja) | 2007-03-14 |
| DE60009108T2 (de) | 2005-03-03 |
| KR20020059594A (ko) | 2002-07-13 |
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