CN103474589A - 电池组件 - Google Patents
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
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- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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Abstract
本发明公开了一种包括外壳的电池组件。至少一个端子与外壳的汇流部件熔融连接,从而相对于汇流部件密封端子,并且提供一个通向电池组件的内部的导电通道。端子可通过超声连接操作或者热***操作进行熔融连接。多个电池布置在外壳内,并且电池中的每一个通过集成在汇流部件内的汇流条电连接。电池中的每一个都包括多个通过隔离板隔开的正电极和负电极。负电极包括一个具有突出物的底板,交汇在与电极的活性材料部分连接的凸缘处。正电极包括一个具有突出物的底板,交汇在与电极的活性材料部分连接的凸缘处。
Description
本申请是申请日为2008年8月14日的名称为“电池组件”的中国专利申请200880111375.8的分案申请。
相关申请的引用
该申请要求申请日为2007年8月14日的美国临时专利申请序列号60/955,705的优先权,其内容在此通过引用以其整体引入。
技术领域
本发明涉及电池组件。
背景技术
电池组件可包括一个具有外壳的结构,交错地堆叠的正和负电极片位于该外壳中。在现有技术中,正和负电极可表现出电压降,并且穿过电极具有不均匀的电流分布。因此,在本领域需要改进的正电极和负电极,其使电压降最小化,并改善穿过电极的电流分布。
另外,现有技术中电池组件可包含有连接到外壳和与电极连接的汇流条或者其它***相接的端子(接线柱)。现有技术的电池组件中与外壳连接的端子为电池组件增加了显著的成本,这是由于端子本身的成本以及需要将端子连接到汇流条上的成本。另外,与电池组件连接的端子应当相对于外壳密封,来阻止电池组件中气体的排出,同时阻止电池组件外部的气体传入电池组件。因此,在本领域需要一种改善的具有端子的电池组件,所述端子是成本有效的并且提供与外壳的密封相接。
发明内容
一方面,本发明公开了一种包含有外壳的电池组件。至少一个端子与外壳熔融连接(melt join),这使端子相对于外壳密封,并且提供了到达电池组件内部的导电通路。端子可通过超声连接操作或者热***操作熔融连接。
另一方面,本发明公开了一种包含有外壳的电池组件。外壳中布置有多个电池,每一个电池都与汇流部件(bus member)电连接。每个电池包括多个通过隔离板分开的正电极和负电极。负电极包括底板,底板具有突出物(tab),交汇在与电极的活性材料部分连接的凸缘上。
另一方面,本发明公开了一种包含有外壳的电池组件。外壳中布置有多个电池,每一个电池都与汇流部件电连接。每个电池包括多个通过隔离板分开的正电极和负电极。正电极包括底板,底板具有突出物,交汇在与电极的活性材料部分连接的凸缘上。
附图简述
图1是电池组件的分解透视图;
图2是电池组件的组装透视图;
图3是电池组件的部分组装透视图,其中顶盖移开以展示汇流部件;
图4是图3的电池组件的俯视图;
图5是电池组件的侧视图;
图6是沿图4和5的线6-6的部分截面图;
图7是电池组件的部分端视图,其中端子相对于汇流部件的负极部分布置;
图8是电池组件的负电极的侧视图;
图9是图8的负电极的凸缘和底板的细节图;
图10是电池组件的正电极的侧视图;
图11是图10的正电极的凸缘和底板的细节图;
图12是多个相对于彼此堆叠的正电极和负电极的透视图,其中隔离板布置在正电极和负电极之间;
图13是显示正电极的多个电极的端视图;
图14是多个正电极和负电极的前视图;
图15是显示负电极的细节的多个正电极和负电极的端视图;
图16是显示外壳的公口和母口对准部件的电池组件的局部侧视图;
图17是沿着图16中的线17-17的邻近电池组件的截面图;
图18是沿着图16中的线18-18的邻近电池组件的局部截面图;
图19是示于图18中的邻近电池组件的公口和母口对准部件的细节图;
图20是详细示出间隔材料的邻近电池组件的截面图;
图21是示于图20中的间隔材料的细节图;
图22是沿着图1中的线22-22的电池组件的外壳侧壁的截面图。
具体实施方式
参考图1,示出了电池组件30。电池组件30包括外壳32,外壳32是具有侧壁34、顶部36、底部38和汇流部件40的容器,汇流部件40适于容纳连接电池组件30的电池35的多个连接器。另外,至少一个端子42与汇流部件40熔融连接,这使端子42相对于汇流部件40密封,并且提供了到达电池组件30内部的导电通路。
一方面,端子42可利用超声连接操作熔融连接。另一方面,端子42可以在热***操作中熔融连接。两种操作会在下文中详述。
如上文所述,至少一个端子42与汇流部件40熔融连接,使端子42相对于汇流部件40密封。一方面并且如图6最佳显示,至少一个端子42包括一个适于与汇流部件40相互作用的杆44,该汇流部件40与外壳32连接。杆44纵向延伸到转换部分46。杆44可包括布置在其上的第一O形环48,当端子42与汇流部件40连接时该O形环48用于相对于汇流部件40密封。杆44还可包括布置在其上的粘性的粘结层50,以在端子42和汇流部件40之间提供蒸汽阻挡层。一方面,转换部分46可包括沟槽52,其容纳用于使端子42相对于汇流部件40密封的第二O形环54。
另一方面,端子42可包括从转换部分46纵向延伸的端子部分56。端子部分56可包括具有压花构造60的外表面58,当与外壳32连接时压花构造60提供抗旋转作用。另外,端子部分56的外表面58还可包括在其上形成的抗拔出结构62,以便当连接操作后可阻止端子42从汇流部件40中拔出。例如,抗拔出结构62可以是能够使端子部分56的外表面58与汇流部件40的内表面紧扣或者连接的脊状物(ridge)。
端子部分56终止于连接表面64,该连接表面64适于连接至外部负载。连接表面64可包括螺纹部分66,其允许外部负载以螺旋式啮合与连接表面64啮合。另外,连接表面64可包括允许外部负载啮合的其它结构,包括狭缝、孔、夹子或者任何其它的连接结构。
一方面,并且如图1-3和图7最佳显示,外壳32可用塑料制成,包括具有侧壁34、顶部36、底部38和汇流部件40的容器,汇流部件40适于容纳用于连接电池组件30的电池35和至少一个端子42的多个连接器。汇流部件40可设置在容器内。如上文所述,该至少一个端子42可超声或者热的方式连接至汇流部件40,或者另一方面,可与汇流部件40连接。汇流部件40可包括一个安全出口68,用于在电池组件30短路或者过量充电时释放压力。安全出口68可与汇流部件40形成一体。汇流部件40可包括通道70,其可使各电池35的加压气体穿行通过通道70到达位于汇流部件40一端的安全出口68。
一方面,图16中最佳显示的外壳32的侧壁34中的一个可包括公口对准部件72,外壳32的另一侧壁34可包括母口对准部件74。从图18和19中可清楚看到,一个电池组件30的公口对准部件72可被容纳在邻近的电池组件30的母口对准部件74中,从而使组件30相对于彼此排成行,这提供了可靠的定位。电池组件30的这种排列提供了组件30的均匀压缩和间距,提高了电池组件30的性能。
一方面,并且如图22所示,侧壁34中的至少一个可包括层状结构或者复合结构。层状结构可包括塑料76、塑料膜78、粘合剂80、铝82,形成渗透屏障。层状结构控制材料经过侧壁34在电池组件30的内部和外部之间传输。塑料可选自聚亚苯基醚、聚苯乙烯、聚丙烯、聚苯硫或者上述物质的任意组合。
参考图20和21,外壳32的侧壁34可包括间隔材料82。一个组件30的间隔材料82压在邻近的侧壁34上,以提供邻近的电池组件30的均匀压缩和间隔。一方面,间隔材料82从侧壁34延伸出一段距离,该段距离大于在最大容许程度进行修整的溢边(flash)的高度的两倍。溢边可在连接外壳32的不同部件时形成。
一方面,所述至少一个端子42可由镍或者镍基合金制成。在可选方面,所述至少一个端子42的杆44可用抗碱性环境腐蚀的导电材料制成,如镍,而端子部分56可由具有强的结构特性和对外壳40外部的区域具有足够的耐腐蚀性的导电材料制成,如铁铜材料。铁铜材料可以是其中分散了铜的烧结铁材料。一方面,分散的铜存在的量可以为铁铜材料重量的20%到25%。
如上文所述,电池组件30包括外壳32和布置在外壳32内的多个电池35。电池35可通过与汇流部件40一体的汇流条实现电连接。电池35中的每一个包括多个通过隔离板88分隔开的负电极84和正电极86。负电极84包括具有突出物92的底板90,交汇在与电极的活性材料部分连接的凸缘94处。一方面,底板90可以由穿孔的镀镍钢制成。活性材料可以是应用于活性材料部分的AB5氢化物合金的膏状物,其中A选自La、Ce、Ti和稀土金属混合物(mischmetal),B选自Ni、Co、Mn和Al。形成在负电极84上的凸缘94的尺寸设计成使穿过电极的电压降达到最小值。另外,与现有技术的电极相比,凸缘94能改善穿过电极的电流分布。
与上面描述的负电极84相似,正电极86同样包括具有突出物100的底板98,交汇在与电极的活性材料部分连接的凸缘102处。正电极86可具有由镍泡沫形成的底板。活性材料可以是氢氧化镍和其它材料的膏状物。如负电极84的凸缘94一样,与现有技术的电极相比,正电极凸缘102的尺寸设计为使穿过电极的电压降最小并且改善穿过电极的电流分布。
如上文中所述,端子42可以与汇流部件40熔融连接,使端子42相对于汇流部件40密封,并且提供到达电池组件30的内部的导电通路。端子42可通过超声连接操作来熔融连接。在超声连接操作中,可利用合适的夹具来固定电池组件30。夹具牢固地夹在汇流部件40上。O形环48、54可如上所述设置在端子42中,同样焦油(tar)50也如上所述布置在端子42上。超声能量作用在汇流部件40的局部区域,引起材料的局部熔化。作用在局部区域的超声能量大约为20kHz,利用在表面64处紧靠端子42的喇叭施加。端子42在那里被压入汇流部件40,使得抗拔出结构62、O形环48、54和压花构造60与汇流部件40啮合。***端子42后,允许部件冷却,形成端子42相对于汇流部件40的密封连接。
仍然如上文所述,端子42可通过热***操作熔融连接。端子42可通过围绕着端子部分56的感应加热线圈进行加热,直到在压花表面58处达到塑料的熔化温度。***端子42并且压入汇流部件40中,并且被固定在适当的位置,直到围绕着表面58的塑料硬化,以固定端子42在汇流部件40中的位置。
本发明已经以图解的方式来描述。应当理解,所使用的术语只是用来描述而不是用来限定。根据上文的教导,本发明的很多修正和改变都是可能的。因此,在所附权利要求书的范围内,本发明可以不同于如明确描述的那样实施。
Claims (10)
1.一种电池组件,包括:
外壳;
设置在所述外壳中的多个电池,所述电池与汇流部件电连接;
电池中的每一个包括多个被隔离板隔开的正电极和负电极,
所述负电极包括具有突出物的底板,所述突出物和底板交汇在与电极的活性材料部分连接的凸缘处。
2.如权利要求1所述的电池组件,其中所述底板由穿孔的镀镍钢制成。
3.如权利要求1所述的电池组件,其中所述活性材料是应用于所述活性材料部分的AB5氢化物合金的膏状物,其中A选自La、Ce、Ti和稀土金属混合物,B选自Ni、Co、Mn和Al。
4.如权利要求1所述的电池组件,其中所述凸缘的尺寸设计为使电压降最小化。
5.如权利要求1所述的电池组件,其中所述凸缘改善穿过所述电极的电流分布。
6.一种电池组件,包括:
外壳;
多个布置在所述外壳中的电池,所述电池与汇流部件电连接;
所述电池中的每一个包括多个通过隔离板隔开的正电极和负电极,所述正电极包括具有突出物的底板,所述突出物和底板交汇在与电极的活性材料部分连接的凸缘处。
7.如权利要求6所述的电池组件,其中所述底板由镍泡沫制成。
8.如权利要求6所述的电池组件,其中活性材料是氢氧化镍和其它材料的膏状物。
9.如权利要求6所述的电池组件,其中所述凸缘的尺寸设计为使电压降最小化。
10.如权利要求6所述的电池组件,其中所述凸缘改善穿过所述电极的电流分布。
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JP5591351B2 (ja) | 2010-12-07 | 2014-09-17 | 株式会社オートネットワーク技術研究所 | 端子付プレート、ガイドプレート、プレート組立体、及び電池モジュール |
US9859532B2 (en) * | 2011-03-31 | 2018-01-02 | Johnson Controls Technology Llc | Battery module and method incorporating exterior casing and liner |
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PL2191524T3 (pl) | 2019-11-29 |
WO2009023775A2 (en) | 2009-02-19 |
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EP2191524A4 (en) | 2012-11-07 |
US10008707B2 (en) | 2018-06-26 |
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CN101842920B (zh) | 2015-01-07 |
US20120115017A1 (en) | 2012-05-10 |
HUE044101T2 (hu) | 2019-09-30 |
US20090047574A1 (en) | 2009-02-19 |
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EP2191524B1 (en) | 2018-10-10 |
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