CN115152085A - 应用热收缩膜的电池模块以及包括其的电池组和车辆 - Google Patents
应用热收缩膜的电池模块以及包括其的电池组和车辆 Download PDFInfo
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Abstract
根据本公开的实施例的电池模块包括:单体堆组件,包括具有多个电池单体的单体堆;汇流条框架组件,覆盖单体堆的一个纵向侧和另一纵向侧;热收缩膜,覆盖单体堆组件;模块外壳,用于容纳被热收缩膜覆盖的单体堆组件;以及端板,覆盖分别形成在模块外壳的一个纵向侧和另一纵向侧的开口。
Description
技术领域
本公开涉及一种应用热收缩膜的电池模块以及包括该电池模块的电池组和车辆,更具体地,涉及一种具有单体堆组件的外表面被热收缩膜覆盖的结构的电池模块以及包括该电池模块的电池组和车辆。
本申请要求于2020年8月21日在韩国提交的韩国专利申请第10-2020-0105288号的优先权,其公开内容通过引用并入本文。
背景技术
应用于车辆的电池组的电池模块具有如下结构:汇流条框架分别接合到通过堆叠多个电池单体而形成的单体堆的两个纵向侧,以将电池单体彼此电连接,并且单体堆组件(其中单体堆与汇流条框架接合)被容纳在模块外壳中。另外,应用于车辆的电池组的电池模块具有端板分别接合到模块外壳的两个纵向侧的结构。
在制造这种用于车辆的电池模块时,为了使单体堆组件绝缘,需要应用绝缘部件来防止单体堆组件的单体堆与模块外壳之间的接触。另外,为了单体堆组件的绝缘,需要应用绝缘部件来防止单体堆组件的汇流条框架与端板之间的接触。
如果将绝缘部件单独应用于需要绝缘的每个部分,则制造电池模块所需的部件数量增加,这不可避免地增加了制造成本,并且随着部件的数量增加使制造工艺复杂化,从而降低了生产率。
另外,在电池模块中,如果将绝缘部件单独应用于需要绝缘的区域,则不可避免地会在被绝缘部件覆盖的区域和与其相邻的区域之间的边界处产生间隙,这使得难以实现完全绝缘。
因此,关于应用于用于车辆的电池组的电池模块,需要开发一种电池模块,该电池模块确保单体堆与模块外壳之间的绝缘、汇流条框架与端板之间的绝缘以及应用于电池模块的其他电子部件的绝缘,而不增加用于绝缘的部件的数量。
发明内容
技术问题
本公开设计用于解决现有技术的问题,因此本公开旨在提供一种电池模块,其可以在不增加用于绝缘的部件的数量的情况下确保电池模块的部件之间的有效绝缘。
然而,本公开要解决的技术问题不限于上述内容,并且本领域技术人员将从以下描述中理解本文未提及的其他目的。
技术方案
在本公开的一个方面中,提供了一种电池模块,包括:单体堆组件,包括具有多个电池单体的单体堆和被配置为覆盖单体堆的一个纵向侧和另一纵向侧的汇流条框架组件;热收缩膜,被配置为覆盖单体堆组件;模块外壳,被配置为容纳被热收缩膜覆盖的单体堆组件;以及端板,被配置为覆盖分别形成在模块外壳的一个纵向侧和另一纵向侧的开口。
汇流条框架组件可以包括:汇流条框架,被配置为覆盖单体堆的一个纵向侧和另一纵向侧;以及多个汇流条,被固定在汇流条框架上并且电连接到电池单体。
电池模块还可以包括一对模块端子,其电连接到单体堆并固定在汇流条框架上。
该对模块端子可以暴露于热收缩膜的外部。
电池模块还可以包括感测连接器,该感测连接器设置在被热收缩膜覆盖的单体堆组件的一个纵向侧或另一纵向侧并且电连接到电池单体。
感测连接器可以暴露于热收缩膜的外部。
模块外壳可以包括:U框架,被配置为容纳被热收缩膜覆盖的单体堆组件;以及盖框架,从U框架上方的位置接合到U框架。
电池模块还可以包括导热单元,该导热单元插置于U框架的内表面与被热收缩膜覆盖的单体堆组件的底表面之间。
导热单元可以包括导热树脂。
热收缩膜可以包括在与导热单元对应的位置处形成的暴露部。
用于实现上述目的的根据本公开的实施例的电池组和车辆包括如上所述的根据本公开的实施例的电池模块。
有益效果
根据本公开的实施例,能够在不增加用于绝缘的部件的数量的情况下确保电池模块的部件之间的有效绝缘,从而提高电池质量并降低制造成本。另外,可以提高电池模块制造工艺的便利性。
附图说明
附图示出了本公开的优选实施例,并且与前述公开内容一起用于提供对本公开的技术特征的进一步理解,因此,本公开不被解释为限于附图。
图1是示出根据本公开的实施例的电池模块的图。
图2是示出从图1所示的电池模块移除端板的状态的图。
图3是示出从图2所示的电池模块移除热收缩膜的状态的图。
图4是示出根据本公开的单体堆组件的表面被热收缩膜覆盖的状态的图。
图5是示出根据本公开的单体堆组件的图。
图6是示出从图5所示的单体堆组件移除上盖的状态的图。
图7是示出根据本公开的单体堆的图。
图8是示出根据本公开的电池单体的图。
图9是示出被热收缩膜覆盖的单体堆组件和模块外壳的分解透视图。
图10是示出被热收缩膜覆盖的单体堆组件的底表面的图。
具体实施方式
在下文中,将参照附图详细描述本公开的优选实施例。在描述之前,应理解,说明书和所附权利要求中使用的术语不应被解释为限于一般含义和字典含义,而是基于允许发明人适当地定义术语用于最佳解释的原理,根据与本公开的技术方面对应的含义和概念来解释。因此,本文所提出的描述仅是优选示例,仅用于说明的目的,而不旨在限制本公开的范围,因此,应当理解,在不脱离本公开的范围的情况下,可以对其进行其他的等同和修改。
参照图1至图6,根据本公开的实施例的电池模块包括单体堆100、汇流条框架组件300、热收缩膜10、模块外壳500以及端板600。电池模块还可以包括感测连接器组件200和/或模块端子400。
参照图7和图8,单体堆100包括多个电池单体110,多个电池单体110被堆叠成使得其宽表面彼此面对。电池单体110可以是软包型电池单体。软包型电池单体110包括电极组件(未示出)、一对电极引线111以及单体壳体112。
一对电极引线111分别连接到电极组件的正极片(未示出)和负极片(未示出),并且从单体壳体112引出。单体壳体112包括电极组件容纳部112a和从电极组件容纳部112a的周边向外延伸的密封部112b。一对电极引线111通过密封部112b从单体壳体112引出。
例如,可以将一对电极引线111分别引出到电池单体110的一个纵向侧和另一个纵向侧。也就是说,应用于本公开的电池单体110可以对应于正极引线和负极引线沿相反方向引出的双向引出型电池单体。
另外,一对电极引线111的位置可以从电池单体110的中心沿宽度方向(图7的Z轴方向)向一侧偏斜。具体地,一对电极引线111的位置从电池单体110的中心沿宽度方向向一侧偏斜,并且可以沿单体堆100的高度方向(图6中的Z轴方向)向下偏斜。
如果如上所述将一对电极引线111的位置从电池单体110的中心沿宽度方向向一侧偏斜,则可以形成用于安装稍后说明的模块端子400的空间,从而提高能量电池模块的密度。稍后将详细描述由于将电极引线111安装为偏斜的结构而导致的能量密度增加。
参照图6,感测连接器组件200包括感测线210和感测连接器220。感测210沿着电池模块的纵向(平行于Y轴)延伸以覆盖单体堆100的顶表面的至少一部分,并且感测线210的两端弯曲并且位于汇流条框架组件300上。连接端子211设置在弯曲的感测线210的两端,并且连接端子211连接到汇流条320和/或模块端子400,使得感测线210电连接到电池单体110。感测线210可以是柔性印刷电路板(FPCB)。
感测连接器220暴露于模块外壳500的外部并且安装在朝向汇流条框架组件300弯曲的感测线210上。感测连接器220可以根据电极引线111的偏斜而设置在电极引线111上方形成的空间中。感测连接器220的这种布置位置使得由于安装感测连接器220而引起的电池模块体积的增加最小化,从而提高了电池模块的能量密度。
感测连接器220通过感测线210电连接到电池单体110。另外,诸如BMS的控制装置(未示出)连接到感测连接器220,并且控制装置接收关于电池单体110的电压的信息并且参照该信息来控制电池模块的充电和放电。
同时,感测连接器组件200还可以包括安装在单体堆100的上表面(平行于X-Y平面的表面)上的感测线210上的温度传感器230。温度传感器230可以安装在通过切割以FPCB形式设置的感测线210的一部分而形成的温度传感器放置部上。温度传感器放置部的一个纵向端形成为固定端,而纵向另一端形成为自由端。因此,尽管FPCB的特性具有一定刚性,温度传感器放置部也可以自由地上下移动。因此,安装在温度传感器放置部上的温度传感器230可以通过温度传感器放置部与单体堆100间接紧密接触,以准确测量电池堆100的温度。
参照图3,汇流条框架组件300包括用于覆盖单体堆100的一个纵向侧和另一纵向侧的汇流条框架310,并且包括固定在汇流条框架310上并且电连接到电池单体110的多根汇流条320。
例如,汇流条框架310可以由诸如树脂的绝缘材料制成,并且包括汇流条放置部311,汇流条放置部311形成为在与电池单体110的电极引线111对应的位置处突出。与电极引线111类似,汇流条放置部311形成在从单体堆100的中心沿高度方向(平行于Z轴)向下偏斜的位置处。与电极引线111的偏斜类似,汇流条放置部311的偏斜用于确保部件的安装空间。
汇流条放置部311包括形成在与电极引线111相对应的位置处的多个引线狭缝S。电极引线111通过引线狭缝S从汇流条框架310中引出,并且引出的电极引线111弯曲并通过焊接等被固定在汇流条320上。
外部端子400成对设置,并且该对外部端子400分别与位于电池堆100沿宽度方向(平行于X轴)的两个最外侧的电池单体110的电极引线111连接。
与上述感测连接器220类似,由于电极引线111的偏斜,外部端子400位于形成在电极引线111和汇流条放置部311上方的空间中。外部端子400的形成位置是为了使由于通过利用电极引线111的偏斜安装所形成的空间安装外部端子400而增加的电池模块的体积最小化。
参照图5,本公开的单体堆组件1包括单体堆100和汇流条框架组件300。单体堆组件1还可以包括感测连接器组件200和/或模块端子400。单体堆组件1还可以包括覆盖单体堆100的上表面(平行于X-Y平面的表面)的上盖450。上盖450可以分别与一对汇流条框架310铰接。在这种情况下,在上盖450与汇流条框架310之间的紧固部中形成间隙,使得沿单体堆100的纵向(平行于Y轴)穿过单体堆100的上表面的感测线210通过间隙被引出到上盖450的外部。
感测连接器220安装在感测线210上,感测线210通过在上盖450与汇流条框架310之间的紧固部中形成的间隙被引出到上盖450的外部。
参照图4和图5,单体堆组件1的表面可以被热收缩膜10覆盖。热收缩膜10具有绝缘性,并且具有在对其施加一定程度或更多的热量时收缩的特性,例如,可以是PVC薄膜。
热收缩膜10可以设置为完全覆盖单体堆组件1的外表面。即,热收缩膜10覆盖单体堆100的上表面和下表面以及两侧表面,并且还覆盖接合到单体堆100的前表面和后表面(平行于X-Z平面)的汇流条框架组件300的表面。如果单体堆组件1包括上盖450,则热收缩膜10覆盖上盖450而不覆盖单体堆100的上表面。
同时,感测连接器220和/或一对模块端子400暴露于热收缩膜10的外部。即,热收缩膜10具有在与感测连接器220和/或模块端子400对应的位置处敞开的形状。
热收缩膜10覆盖单体堆组件1的表面并且确保金属模块外壳500与单体堆100之间的绝缘。另外,热收缩膜10还起到使设置在汇流条框架310上的电极引线111和汇流条320与由金属材料制成的端板600绝缘的作用。即,通过应用热收缩膜10,能够省略用于绝缘的部件。
此外,热收缩膜10可以通过在电池模块受热时收缩来包裹单体堆100的电池单体110,并且还可以增强单体堆100与汇流条框架组件300之间的紧固力和单体堆100与上盖450之间的紧固力。
参照图9,模块外壳500包括U框架510和盖框架520。U框架510具有大致U形的截面。U框架510容纳被热收缩膜10覆盖的单体堆组件1。U框架510包括底板511和一对侧板512,底板511用于支撑被热收缩膜10覆盖的单体堆组件1的底表面(平行于X-Y平面),该对侧板512用于覆盖被热收缩膜10覆盖的单体堆组件1的侧表面(平行于Y-Z平面)。底板511和一对侧板512可以一体地形成。或者,底板511和一对侧板512可以单独设置并且彼此接合以形成U框架510。
盖框架520覆盖由热收缩膜10覆盖的单体堆组件1的上表面(平行于X-Y平面)并且从U框架510上方的位置接合到U框架510。即,模块外壳500可以具有两部分结构。因此,在将被热收缩膜10覆盖的单体堆组件1放置在U框架510中之后,盖框架520可以通过焊接等接合到U框架510。
同时,根据本公开的实施例的电池模块还可以包括导热单元20,导热单元20插置于U框架510的底板511与被热收缩膜10覆盖的单体堆组件1的底表面之间。导热单元20可以包括导热树脂(热树脂)。例如,可以通过在底板511上涂覆导热树脂膏来形成导热单元20。或者,可以以包括导热树脂的垫的形式设置导热单元20。可以应用导热单元20以最大化底板511与被热收缩膜10覆盖的单体堆组件1之间的接触面积。通过应用导热单元20,可以通过模块外壳500的下表面容易地将单体堆100中产生的热量排放到外部。
例如,导热单元20可以设置为多个,并且多个导热单元20可以设置为沿单体堆100的纵向(平行于Y轴)彼此间隔开。如果设置多个导热单元20,则至少一对导热单元20可以分别位于底板511沿纵向(平行于Y轴)的两端。这是为了通过平稳地冷却靠近电极引线111的产生大量热量的区域来提高冷却效率。同时,导热单元20可以不沿纵向(平行于Y轴)应用于单体堆组件1的底表面上的中心处。这是为了通过将导热单元20集中地应用到产生相对大量热量的区域来最小化用于形成导热单元20的涂覆的导热树脂的量。
参照图10连同图9,如果电池模块包括导热单元20,则热收缩膜10包括在与导热单元20对应的位置处形成的暴露部11。导热单元20与通过暴露部11暴露的单体堆组件1的底表面(平行于X-Y平面)接触。
参照图3和图8以及图9和图10,热收缩膜10完全覆盖单体堆组件1的底表面与汇流条框架300对应的区域以及其与电池单体110的密封部112b对应的区域,并且还覆盖电极组件容纳部112a的邻近密封部112b的部分。由于热收缩膜10的应用范围,在将导热树脂涂覆在U框架510的内表面上之后,可以防止导热树脂在U框架510中放置被热收缩膜10覆盖的单体堆组件1的步骤中向电极引线111扩散。
参照图1,端板600覆盖分别形成在模块外壳500沿纵向(平行于Y轴)的一侧和另一侧的开口。端板600可以与模块外壳500接合。感测连接器220和模块端子400暴露于端板600的外部。端板600可以由金属材料制成以确保电池模块的刚性。即使端板600由金属制成,汇流条框架组件300的面对端板600的表面也覆盖有热收缩膜10,从而确保绝缘。
同时,根据本公开的实施例的电池组包括至少一个上述根据本公开的实施例的电池模块。另外,根据本公开的实施例的车辆包括至少一个根据本公开的实施例的电池组。
已经详细描述了本公开。然而,应当理解,详细描述和具体示例虽然描述了本公开的优选实施例,但仅以示例的方式给出,这是由于本公开的范围内的各种变化和修改通过该详细描述对于本领域技术人员将变得清楚。
Claims (12)
1.一种电池模块,包括:
单体堆组件,包括具有多个电池单体的单体堆和被配置为覆盖所述单体堆的一个纵向侧和另一纵向侧的汇流条框架组件;
热收缩膜,被配置为覆盖所述单体堆组件;
模块外壳,被配置为容纳被所述热收缩膜覆盖的所述单体堆组件;以及
端板,被配置为覆盖分别形成在所述模块外壳的一个纵向侧和另一纵向侧的开口。
2.根据权利要求1所述的电池模块,其中,所述汇流条框架组件包括:
汇流条框架,被配置为覆盖所述单体堆的一个纵向侧和另一纵向侧;以及
多个汇流条,被固定在所述汇流条框架上并且电连接到所述电池单体。
3.根据权利要求2所述的电池模块,其中,所述电池模块还包括一对模块端子,所述一对模块端子电连接到所述单体堆并且固定在所述汇流条框架上。
4.根据权利要求3所述的电池模块,其中,所述一对模块端子暴露于所述热收缩膜的外部。
5.根据权利要求1所述的电池模块,其中,所述电池模块还包括感测连接器,所述感测连接器设置在被所述热收缩膜覆盖的所述单体堆组件的所述一个纵向侧或所述另一纵向侧并且电连接到所述电池单体。
6.根据权利要求5所述的电池模块,其中,所述感测连接器暴露于所述热收缩膜的外部。
7.根据权利要求1所述的电池模块,其中,所述模块外壳包括:
U框架,被配置为容纳被所述热收缩膜覆盖的所述单体堆组件;以及
盖框架,从所述U框架上方的位置接合到所述U框架。
8.根据权利要求7所述的电池模块,其中,所述电池模块还包括导热单元,所述导热单元插置于所述U框架的内表面与被所述热收缩膜覆盖的所述单体堆组件的底表面之间。
9.根据权利要求8所述的电池模块,其中,所述导热单元包括导热树脂。
10.根据权利要求8所述的电池模块,其中,所述热收缩膜包括在与所述导热单元对应的位置处形成的暴露部。
11.一种电池组,包括根据权利要求1至10中任一项所述的电池模块。
12.一种车辆,包括根据权利要求1至10中任一项所述的电池模块。
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- 2021-08-18 EP EP21858591.7A patent/EP4138192A4/en active Pending
- 2021-08-18 CN CN202180016313.4A patent/CN115152085A/zh active Pending
- 2021-08-18 KR KR1020210109086A patent/KR20220023720A/ko unknown
- 2021-08-18 US US18/017,835 patent/US20230261349A1/en active Pending
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JP2023514286A (ja) | 2023-04-05 |
JP7431992B2 (ja) | 2024-02-15 |
EP4138192A1 (en) | 2023-02-22 |
WO2022039504A1 (ko) | 2022-02-24 |
KR20220023720A (ko) | 2022-03-02 |
US20230261349A1 (en) | 2023-08-17 |
EP4138192A4 (en) | 2024-03-27 |
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