CN103843175B - 具有改善的可靠性的电池模块组件和采用该电池模块组件的电池组 - Google Patents
具有改善的可靠性的电池模块组件和采用该电池模块组件的电池组 Download PDFInfo
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- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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Abstract
本发明提供一种电池模块组件,包括:(a)至少两个电池模块,其中,包括至少一个电池单元的单体单元被彼此并联地连接;(b)一对上和下壳体,用于覆盖被竖立在其横向侧面中的电池模块的上部和下部;(c)汇流条组件,用于在电池模块的前表面处彼此并联地电连接电池模块;以及(d)联接孔,该联接孔被形成在上壳体的前表面和/或下壳体的前表面处,以固定电池模块组件的位置或者在其上安装电池模块组件。
Description
技术领域
本发明涉及具有提高可靠性的电池模块和包括该电池模块的中大型电池组,更具体地,涉及一种电池模块组件,该电池模块组件包括:(a)两个或更多个电池模块,所述电池模块具有彼此并联地连接的单体单元,单体单元中的每一个单体单元包括一个或更多个电池单元;(b)一对上壳体和下壳体,在电池模块被竖立在其侧面上的状态下,所述一对上壳体和下壳体包围电池模块的上部和下部;(c)汇流条组件,该汇流条组件被布置在电池模块的前面处,以彼此并联地电连接电池模块;以及(d)紧固孔,该紧固孔被形成在上壳体的前面和/或下壳体的前面处,以定位或者固定电池模块组件。
背景技术
近来,能够充电和放电的二次电池已广泛用作无线移动装置的能量源。另外,将二次电池作为电动车辆(EV)和混合动力电动车辆(HEV)的动力源已引起了相当大的关注,已经开发了所述二次电池来解决由现有的使用化石燃料的汽油车和柴油车所引起的问题,例如空气污染。
小型移动装置为每个装置使用一个或数个电池单元。另一方面,由于中大型装置需要高输出和大容量,所以中大型装置诸如车辆使用具有被彼此电连接的多个电池单元的中大型电池组。
优选地,中大型电池组被制造成具有尽可能小的尺寸和重量。为此,通常棱形电池或袋状电池用作中大型电池组的电池单元,棱形电池或袋状电池能够以高的集成度进行堆叠并具有小的重量容量比。特别地,目前很多兴趣集中在使用铝层压片作为包覆构件(sheathingmember)的袋状电池,是因为袋状电池的重量轻,袋状电池的制造成本低,并且容易修改袋状电池的形状。
为了让中大型电池组提供由特定的设备或者装置所要求的输出和容量,有必要将中大型电池组构造成具有下述结构,即,多个电池单元被彼此串联地电连接或者彼此串联和并联地电连接,并且电池单元对外力而言是稳定的。
具体地,当电池单元被彼此并联地连接时,在单个焊接点处通过一对一焊接,相应的电池单元的电极端子被彼此连接。
然而,当三个或更多个电池单元被彼此并联地连接同时被堆叠时,需要在电池单元的电极端子之间的三个或更多个连接,因此当相同的区域被焊接时,电池组的结构变复杂并且内部电阻增加。
同时,为了确保动态稳定性,通过将电池模块固定到底板并且使用用于电池模块的一部分的端板和支撑条,而通常地制造传统的电池组。
然而,具有上述结构的电池组在将电池模块安装在该电池组中时具有空间限制。在使用大量的电池模块以构成电池组的情况下,电池组的结构稳定性被降低。
另外,传统的电池组被构造成具有下述结构,即,使用螺栓或者螺母而将电池模块固定到底板,使得不能够向上和向下移动电池模块,并且使用端板和支撑条在纵向方向上固定电池模块以便于确保动态稳定性。
然而,在具有上述结构的电池组中,使用紧固构件诸如多个螺栓或者螺母而将电池模块固定到底板,因此组装工艺复杂并且麻烦。另外,有必要确保用于紧固构件的空间,从而导致紧固构件的空间限制和重量限制。
因此,对能够解决上述问题的具有紧凑结构的电池组存在高度需求。
发明内容
技术问题
因此,为解决以上问题和尚待解决的其它技术问题而完成本发明。
具体地,本发明的目的是,提供一种电池模块组件,该电池模块组件被构造成,使得使用汇流条基于每两个电池单元而彼此并联地连接单体单元(cell unit),从而提高焊接可靠性并且使内部电阻最小化。
本发明的另一目的是,提供一种电池模块组件,基于要固定电池模块的新颖的紧固结构,该电池模块组件的组装工艺被简化,并且该电池模块组件整体紧凑并且重量轻。
技术解决方案
根据本发明的一个方面,通过提供电池模块组件,能够完成以上和其它的目的,该电池模块组件包括:(a)两个或更多个电池模块,所述电池模块具有彼此并联地连接的单体单元,所述单体单元的每一个包括一个或更多个电池单元;(b)一对上壳体和下壳体,在电池模块被竖立在其侧面上的状态下,所述一对上壳体和下壳体包围电池模块的上部和下部;(c)汇流条组件,该汇流条组件被布置在电池模块的前面处,以彼此并联地电连接电池模块;以及(d)紧固孔,该紧固孔被形成在上壳体的前面和/或下壳体的前面处,以定位或者固定电池模块组件。
即,在根据本发明的电池模块中,使用最小数目的构件,电池模块能够被联接在上壳体和下壳体之间,从而容易地实现电池组的组装,并且因此优化电池组的空间,并且减少电池组的重量。特别地,在电池组被组装以具有搁板结构诸如机架的情况下,易于固定电池组,从而确保电池组的整体结构稳定性。
在优选示例中,紧固孔可以被构造成具有下述结构,即,紧固螺纹被形成在紧固孔的内周处的结构。因此,通过将构件诸如螺栓容易地插入并紧固到紧固孔中,能够容易地构造具有搁板结构的电池组。
在另一优选示例中,凹陷可以进一步被形成在上壳体的后面和/或下壳体的后面处,使得要定位或者固定电池模块组件的条型构件能够被联接在凹陷中。
凹陷可以被构造成具有下述结构,即,凹陷被压下使得具有与条型构件的外部形状对应的内部形状的结构,并且在与电池模块被布置的方向成横向的方向上,凹陷可以被形成在上壳体的后面和/或下壳体的后面处。因此,当条型构件被安装在凹陷中时,电池模块可以被间接地固定。
同时,电池模块可以具有彼此并联地连接的单体单元,单体单元中的每一个单体单元优选地具有两个或更多个电池单元。
另外,单体单元中的每一个,单体单元可以包括偶数个电池单元。即,在考虑到电池模块的容量而彼此并联地连接电池模块的情况下,在多个电极端子之间或者在电极端子和汇流条之间的焊接期间在相同的区域处同时执行焊接,导致在被焊接的区域处的内部电阻的增加。
另一方面,在根据本发明的电池模块中,基于每两个电池单元,单体单元的电池单元被彼此并联地连接,从而提高在焊接区域的焊接可靠性。另外,能够基于偶数个电池单元容易地实现并联连接。
单体单元的电极端子可以经由汇流条而被彼此电连接。基于包括偶数个,例如两个或更多个电池单元的单体单元,可以容易地执行焊接。
在优选示例中,汇流条组件可以包括:(a)盖板,该盖板由电绝缘材料形成,盖板被固定到电池模块的前面,盖板包括一对本体部;和(b)一对本体部,所述一对本体部中的每一个本体部被构造成具有下述结构,即,在本体部被安装在盖板的状态下,外部输入和输出端子被形成在本体部的L形侧处,并且两个或更多个汇流条从本体部的的另一侧分叉开的结构,并且本体部可以被布置成使得在与电池模块被布置的方向成横向的方向上彼此面对。
优选地,本体部可以通过嵌入注射成型而被联接到盖板。
另外,本体部可以设置有台阶,以防止在电池模块组件的外部输入和输出端子之间的短路。因此,可以基于台阶设定外部输入和输出端子的位置。
电池单元中的每一个电池单元是下述二次电池,即具有小的厚度和相对大的宽度和长度,以当电池单元被堆叠以构成电池模块时,使电池单元的整体大小最小化的二次电池。在优选示例中,二次电池可以被构造成具有下述结构,即,阴极/分隔物/阳极结构的电极组件被安装在由包括树脂层和金属层的层压片形成的电池壳体中并且阴极端子和阳极端子从电池壳体的相反两端或者一端突出。具体地,二次电池可以被构造成具有下述结构,即,电极组件被安装在由层压片形成的袋状壳体中的结构。具有与上述的结构的二次电池也可以被称为袋状电池单元。
在优选示例中,单体单元中的每一个单体单元可以被构造成具有下述结构,即,在电池单元彼此紧密接触的状态下,电池单元被安装在金属外壳之间的结构。
在上面的结构中,金属外壳可以被彼此联接以包围电池单元堆的除电池单元的阴极端子和阳极端子之外的外侧的整体,该电池单元堆通过两个或更多个电池单元构成。因此,在电池单元的充电和放电期间,金属外壳抑制由于电池单元的重复膨胀和收缩引起的电池单元的变形,同时保护机械强度低的电池单元,以防止电池单元的密封部被彼此分离。
具体地,金属外壳中的每一个金属外壳可以具有与电池单元堆的外形对应的内部结构,并且特别地,金属外壳可以以组装紧固方式被彼此联接。例如,金属外壳可以被构造成具有阴性和阳性紧固结构,在该阴性和阳性紧固结构中,在金属外壳被彼此接触使得金属外壳彼此面对的状态下,当朝着彼此推动金属外壳时,通过弹性联接金属外壳的截面联接部彼此配合。
同时,在二次电池的充电和放电期间,从二次电池产生热,并且在延长二次电池的寿命以及确保二次电池的安全性方便,将产生的热从二次电池中有效排放是非常重要的。为此,金属外壳中的每一个金属外壳可以是由呈现高导热性的金属片制成,通过金属外壳从被安装在金属外壳之间的电池单元产生的热被容易地排放到外部。
根据情形,绝缘带可以被附接到电池单元中的每一个电池单元的除电池单元中的每一个电池单元的电极端子之外的外周。因此,能够防止由于在电池单元和其它构件诸如金属外壳之间的接触而引起的绝缘电阻的破坏。
根据本发明的另一方面,提供一种高输出和大容量的大中型电池组,该高输出和大容量的大中型电池组基于所期望的输出和容量而包括两个或更多个电池模块。
基于所期望的输出和容量,通过组合电池模块可以制造根据本发明的电池组。
根据本发明的又一方面,提供一种包括中大型电池组的装置。
考虑到如上所述的安装效率和结构稳定性,装置可以是电动车辆、混合动力电动车辆、插电式混合动力电动车辆或者电力存储装置。然而,本发明不限于此。
附图说明
与附图相结合,根据以下详细说明,将更清楚地理解本发明的以上和其它目的、特征和其它优点,其中:
图1是示出根据本发明的电池模块组件的透视图;
图2是在图1中示出的电池模块组件的分解透视图;
图3是在图1中示出的电池模块组件的前视图;
图4是在图1中示出的电池模块组件的侧视图;
图5是单体单元的典型视图;
图6是在图5中示出的电池单元的部分放大图;
图7是汇流条组件的典型视图;以及
图8是示出在图7中示出的一对本体部的典型视图。
具体实施方式
现在,将参考附图详细地描述本发明的优选实施例。然而,应注意的是,所图示的实施例不限制本发明的范围。
图1是典型地示出根据本发明的电池模块组件的透视图,并且图2是典型地示出在图1中示出的电池模块组件的分解透视图。
参考这些附图,电池模块组件300包括:八个电池模块200,电池模块200具有彼此并联地连接的单体单元(cell unit)100,单体单元100中的每一个单体单元包括两个电池单元10;一对上壳体210和下壳体220,在电池模块200被竖立在其侧面上的状态下,所述一对上壳体210和下壳体220包围电池模块200的上部和下部;汇流条组件230,该汇流条组件230被布置在电池模块200的前面处,以彼此并联地电连接电池模块200;以及紧固孔211和221,该紧固孔211和221被形成在上壳体210的前面和/或下壳体220的前面处,以定位或者固定电池模块组件300。
图3是典型地示出在图1中示出的电池模块组件的前视图,并且图4是典型地示出在图1中示出的电池模块组件的侧视图。
参考这些附图以及图1和图2,紧固孔211和221被构造成具有下述结构,即,紧固螺纹(未示出)被形成在紧固孔211和221中的每一个紧固孔的内周处。因此,通过将螺栓250插入并紧固到紧固孔211和221中,能够将电池模块组件固定到预定的区域或者预定的装置。
另外,在与电池模块220被布置的方向成横向的方向(图3的方向A)上,凹陷240和241被形成在上壳体210的后面和下壳体220的后面处,使得要定位或者固定电池模块组件300的条型构件(未示出)能够被联接在凹陷240和241中。
图5是单体单元的典型视图并且图6是典型地示出在图5中示出的电池单元的部分放大图。
参考这些附图,单体单元100包括两个电池单元10。绝缘带15被附接到每个电池单元10的除电极端子11之外的外周,以防止由于在电池单元10和金属外壳120之间的接触引起的绝缘电阻的破坏。
具体地,示出一对高强度金属外壳120,所述一对高强度金属外壳120被构造成具有完全地包围两个电池单元10的外侧的结构。在电池单元10的充电和放电期间,金属外壳120抑制由于电池单元10的重复膨胀和收缩引起的电池单元10的变形,同时保护机械强度低的电池单元10,以防止电池单元10的密封部被彼此分离。金属外壳120包括左外壳121和右外壳122,在没有使用附加的紧固构件的情况下,可以彼此联接该左外壳121和该右外壳122。
图7是根据本发明的实施例的汇流条组件的典型视图,并且图8是示出在图7中示出的一对本体部的典型视图。
参考这些附图和其它附图,汇流条组件230包括盖板231和本体部232。
盖板231是由电绝缘材料形成。盖板231被固定到电池模块200的前面。盖板231包括一对本体部232。因此,单体单元100的电极端子11经由汇流条233而被彼此电连接。
每一个本体部232被构造成具有下述结构,即,在本体部231通过嵌入注射成型而被联接到盖板231的状态下,外部输入和输出端子234被形成在本体部232的L形侧面处,并且两个或更多个汇流条233在平面上从本体部232的另一侧分叉开(diverge)的结构。
本体部232和232’被布置成使得在与电池模块200被布置的方向成横向的方向(图3的方向A)上彼此面对。
本体部232设置有台阶,以防止在外部输入和输出端子234和234’之间的短路。因此,可以基于台阶设定外部输入和输出端子234和234’的位置。
尽管为了说明性目的已经公开了本发明的优选实施例,但是本领域普通技术人员应理解的是,在不偏离如权利要求中所公开的本发明的范围和精神的情况下,能够进行各种变型、添加和替代。
工业实用性
如从上面的描述显而易见的,根据本发明的电池模块组件被构造成使得使用汇流条基于每两个电池单元而彼此并联地连接单体单元,从而提高焊接可靠性。
另外,通过被形成在电池模块组件的上壳体的前面和/或下壳体的前面处的紧固孔固定电池模块,从而容易地实现电池组的组装,并且制造具有高空间利用性的电池组。
Claims (19)
1.一种电池模块组件,包括:
(a)两个或更多个电池模块,所述电池模块具有彼此并联连接的单体单元,所述单体单元的每一个包括一个或更多个电池单元;
(b)一对上壳体和下壳体,在所述电池模块被竖立于其侧面上的状态下,所述一对上壳体和下壳体包围所述电池模块的上部和下部;
(c)汇流条组件,所述汇流条组件被布置在所述电池模块的前面处,以将所述电池模块彼此并联地电连接;以及
(d)紧固孔,所述紧固孔被形成在所述上壳体的前面和/或所述下壳体的前面处,以定位或者固定所述电池模块组件,
其中,所述汇流条组件包括:
(i)盖板,所述盖板由电绝缘材料形成,所述盖板被固定到所述电池模块的前面,所述盖板包括一对本体部;和
(ii)所述一对本体部,所述一对本体部中的每一个被构造成具有下述结构,即:在所述本体部被安装在所述盖板上的状态下,外部输入和输出端子被形成在所述本体部的L形侧处,并且两个或更多个汇流条从所述本体部的另一侧分叉开,并且
其中所述本体部被布置成在与所述电池模块所布置的方向成横向的方向上彼此面对。
2.根据权利要求1所述的电池模块组件,其中,所述紧固孔被构造成具有紧固螺纹被形成在所述紧固孔的内周处的结构。
3.根据权利要求1所述的电池模块组件,其中,在所述上壳体的前面和/或所述下壳体的后面处进一步形成有凹陷,使得用于定位或者固定所述电池模块组件的条型构件能够被联接在所述凹陷中。
4.根据权利要求3所述的电池模块组件,其中,在与所述电池模块所布置的方向成横向的方向上,所述凹陷被形成在所述上壳体的后面和/或所述下壳体的后面处。
5.根据权利要求1所述的电池模块组件,其中,所述电池模块的彼此并联连接的所述单体单元中的每一个包括两个或更多个电池单元。
6.根据权利要求1所述的电池模块组件,其中,所述单体单元中的每一个包括偶数个电池单元。
7.根据权利要求1所述的电池模块组件,其中,所述单体单元的电极端子经由汇流条而彼此电连接。
8.根据权利要求1所述的电池模块组件,其中,所述本体部通过嵌入注射成型而被联接到所述盖板。
9.根据权利要求8所述的电池模块组件,其中,所述本体部设置有台阶,以防止在所述外部输入和输出端子之间的短路。
10.根据权利要求1所述的电池模块组件,其中,所述电池单元中的每一个被构造成使得:阴极/分隔物/阳极结构的电极组件被安装在由包括树脂层和金属层的层压片形成的电池壳体中,并且阴极端子和阳极端子从所述电池壳体的相反两端突出。
11.根据权利要求1所述的电池模块组件,其中,绝缘带被附接到所述电池单元中的每一个电池单元的除了所述电池单元中的每一个电池单元的电极端子之外的外周。
12.根据权利要求1所述的电池模块组件,其中,所述单体单元中的每一个被构造成具有下述结构,即:在所述电池单元彼此紧密接触的状态下,所述电池单元被安装在金属外壳之间。
13.根据权利要求12所述的电池模块组件,其中,所述金属外壳被彼此联接,以包围由两个或更多个电池单元构成的电池单元堆的除了所述电池单元的阴极端子和阳极端子之外的外侧的整体。
14.根据权利要求12所述的电池模块组件,其中,所述金属外壳中的每一个具有与电池单元堆的外形对应的内部结构,并且所述金属外壳以组装紧固方式被彼此联接。
15.根据权利要求12所述的电池模块组件,其中,所述金属外壳被构造成具有阴性和阳性紧固结构,在所述阴性和阳性紧固结构中,在所述金属外壳彼此接触使得所述金属外壳彼此面对的状态下,当朝着彼此推动所述金属外壳时,所述金属外壳的截面联接部通过弹性联接而彼此配合。
16.根据权利要求12所述的电池模块组件,其中,所述金属外壳中的每一个由金属片制成。
17.一种电池组,基于输出和容量,所述电池组被构造成具有包括两个或更多个根据权利要求1所述的电池模块组件的结构。
18.一种装置,包括根据权利要求17所述的电池组。
19.一种电池模块组件,包括:
(a)两个或更多个电池模块,所述电池模块具有彼此并联连接的单体单元,所述单体单元的每一个包括一个或更多个电池单元;
(b)一对上壳体和下壳体,在所述电池模块被竖立于其侧面上的状态下,所述一对上壳体和下壳体包围所述电池模块的上部和下部;
(c)汇流条组件,所述汇流条组件被布置在所述电池模块的前面处,以将所述电池模块彼此并联地电连接;以及
(d)紧固孔,所述紧固孔被形成在所述上壳体的前面和/或所述下壳体的前面处,以定位或者固定所述电池模块组件,
其中,所述单体单元中的每一个被构造成具有下述结构,即:在所述电池单元彼此紧密接触的状态下,所述电池单元被安装在金属外壳之间,
其中,所述金属外壳被构造成具有阴性和阳性紧固结构,在所述阴性和阳性紧固结构中,在所述金属外壳彼此接触使得所述金属外壳彼此面对的状态下,当朝着彼此推动所述金属外壳时,所述金属外壳的截面联接部通过弹性联接而彼此配合。
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