CN111816805A - 用于机动车辆的电池模块及其制造方法 - Google Patents
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Abstract
本发明涉及一种用于机动车辆的电池模块,该电池模块包括具有插入开口(32)的电池模块壳体(30)和至少一个布置在该电池模块壳体(30)中的电池单元组(40)。该电池单元组(40)具有至少两个相互平行布置的电池单元(42)和至少一个与这些电池单元(42)平行布置的压缩垫(44)。该至少两个电池单元(42)和该至少一个压缩垫(44)在厚度方向(D)上以任意顺序相互堆叠。该电池单元组(40)在插入方向(E)上通过该插入开口(32)被插入该电池模块壳体(30)中。该电池单元组(40)还具有两个插入辅助层(46),这些插入辅助层构成该电池单元组(40)的在厚度方向(D)上对置的外侧面(41)。
Description
技术领域
本发明涉及一种用于机动车辆的电池模块和一种用于制造该电池模块的方法。
背景技术
在用于机动车辆的电池模块中,通常在三种不同的电池单元类型之间进行区分:具有固定的圆柱形壳体的电池单元,即所谓的圆形电池单元;具有长方体形的固定的壳体的电池单元,即所谓的棱柱形电池单元;以及没有固定壳体的扁平电池单元,即所谓的软包电池单元。
软包电池单元潜在地拥有最高的体积和重量能量密度,因为软包电池不必应付自身的壳体。
此外,从现有技术已知的是,将多个电池单元组合成一个电池模块。电池模块将电池单元连接成电学和机械上可操作的单元。因为软包电池单元是软的,它们必须由固定的壳体保护。此外,为了具有长使用寿命,软包电池单元必须从外部施加压力。
此外从现有技术中已知的是,在完全压缩时,借助于由具有高气体含量并且因此具有高压缩性而同时具有较小的剩余块件尺寸的弹性泡沫构成的压缩垫在厚度方向上张紧软包电池单元。从文献US4,554,226中已知一种这样的电池。
机动车辆可以是电驱动或部分电驱动的机动车辆并且电池对应地可以是牵引电池。
发明内容
本发明的目的在于,提出一种电池模块,其重量、结构空间需求和制造成本都得以降低。
该目的通过如下根据本发明的用于机动车辆的电池模块以及如下用于制造根据本发明的电池模块的方法来实现。
根据本发明的用于机动车辆的电池模块包括具有插入开口的电池模块壳体和至少一个布置在该电池模块壳体中的电池单元组。该电池单元组具有至少两个相互平行布置的电池单元(软包电池单元)和至少一个与这些电池单元平行布置的压缩垫。该至少两个电池单元和该至少一个压缩垫在厚度方向上以任意顺序相互堆叠。该电池单元组在插入方向上通过插入开口被插入电池模块壳体中。该电池单元组还具有两个插入辅助层,这些插入辅助层构成电池单元组的在厚度方向上对置的外侧面。
通过根据本发明的构型可以降低重量、成本和结构空间需求。通过这个构型还可以实现高过程安全性和低废品率。此外,可以避免使用在组装成电池后必须从电池壳体中移出的构件。
根据本发明的电池模块的电池单元尤其可以是软包电池单元。
在一个优选的构型中,该电池模块壳体由一体式的型材构成,尤其由铝挤出型材构成。
优选地,该电池单元组具有两个与这些电池单元平行布置的压缩垫,这些压缩垫分别布置在外侧的电池单元与这些插入辅助层中的一个插入辅助层之间。
在一个优选的构型中,这些插入辅助层分别由金属板构成。
优选地,这些插入辅助层分别由纤维增强的塑料构成。
在一个优选的构型中,该纤维增强的塑料包括与插入方向平行延伸的纤维。
优选地,该电池模块还具有降低摩擦的涂层,该降低摩擦的涂层在外侧布置在插入辅助层处,或者在内侧布置在该电池模块壳体的与插入辅助层对置的内壁处。
在一个优选的构型中,该降低摩擦的涂层是聚四氟乙烯涂层。聚四氟乙烯涂层也可以称为特氟龙涂层。
优选地,该至少两个电池单元、该至少一个压缩垫和这些插入辅助层相互粘接。
本发明还涉及一种用于制造根据本发明的电池模块的方法。该方法包括以下方法步骤:
-提供设有插入开口的电池模块壳体;
-提供电池单元组,该电池单元组具有至少两个相互平行布置的电池单元和至少一个与电池单元平行布置的压缩垫,其中该至少两个电池单元和该至少一个压缩垫在厚度方向上以任意顺序相互堆叠,并且其中该电池单元组还具有两个插入辅助层,这些插入辅助层构成电池单元组的在厚度方向上对置的外侧面;
-在厚度方向上压缩该电池单元组;以及
-将经压缩的电池单元组在插入方向上通过该插入开口插入该电池模块壳体中。
在一个优选的构型中,插入方向和厚度方向接近相互正交地延伸。
优选地,电池单元组的压缩借助于圆柱形滚筒进行,优选地借助于带橡胶的圆柱形滚筒进行。
附图说明
将借助于下文描述的实施例解释根据本发明的电池模块和根据本发明的方法的细节和其他优点。在附图中:
图1示出根据该实施例的电池模块的示意性截面图;
图2示出根据该实施例的电池模块的电池单元组的示意性截面图;
图3和图4展示用于制造根据该实施例的电池模块的方法。
具体实施方式
本申请涉及一种用于机动车辆的电池模块20,该电池模块包括具有插入开口32的电池模块壳体30和至少一个布置在电池模块壳体30中的电池单元组40。电池单元组40具有至少两个相互平行布置的电池单元42和至少一个与电池单元42平行布置的压缩垫44。该至少两个电池单元42和该至少一个压缩垫44在厚度方向D上以任意顺序相互堆叠。电池单元组40在插入方向E上通过插入开口32被插入电池模块壳体30中。电池单元组40还具有两个插入辅助层46,这些插入辅助层分别构成电池单元组40的在厚度方向D上对置的外侧面41。
通过根据本申请的电池模块20可以将降低机动车辆的电池的重量、成本和结构空间需求。
电池单元42可以尤其是软包电池单元。
插入辅助层46可以相对柔性地设计并且可以具有相对薄的厚度。插入辅助层46尤其可以设计为比压缩垫44和/或电池单元42更薄。柔性地设计在这种情况下意味着,插入辅助层46在厚度方向D上是可以弹性变形的。
插入辅助层46可以在插入方向E上设计为相对刚性的,以便能够传递纵向力。
电池单元组40还可以包括端板48,这些端板在插入方向E上布置在电池单元组40的相反的末端处。端板48可以由塑料构成。端板48可以容纳高压连接器49,这些高压连接器不受力地被固定在端板48中。端板48可以支撑在电池单元42处。端板48在向电池单元组40的内部的方向上可以比在向电池单元组40的外部的方向上设计得更软。插入辅助层46可以优选地紧固在端板48处。
电池模块壳体30可以由一体式的型材构成,尤其由铝挤出型材构成。
电池单元组40可以具有两个与电池单元42平行布置的压缩垫44,这些压缩垫分别布置在外侧的电池单元43与插入辅助层46中的一个插入辅助层之间。
插入辅助层46可以分别由金属板或纤维增强的塑料构成。
该纤维增强的塑料可以包括与插入方向E平行延伸的纤维。这些纤维尤其可以是所谓的连续纤维。
根据一个特别的构型,插入辅助层46可以由连续玻璃纤维增强的GFK带制成。
电池模块还可以具有降低摩擦的涂层,该降低摩擦的涂层在外侧布置在插入辅助层46处,或者在内侧布置在电池模块壳体30的与插入辅助层对置的内壁34处。降低摩擦的涂层尤其可以是聚四氟乙烯涂层。
该至少两个电池单元42、该至少一个压缩垫44和插入辅助层46可以相互粘接。
本申请还涉及一种用于制造根据本申请的电池模块20的方法。根据本申请的方法包括以下方法步骤:
-提供设有插入开口32的电池模块壳体30;
-提供电池单元组40,该电池单元组具有至少两个相互平行布置的电池单元42和至少一个与电池单元42平行布置的压缩垫44,其中该至少两个电池单元42和该至少一个压缩垫44在厚度方向D上以任意顺序相互堆叠,并且其中电池单元组40还具有两个插入辅助层46,这些插入辅助层构成电池单元组40的在厚度方向D上对置的外侧41;
-在厚度方向D上压缩电池单元组40;以及
-将经压缩的电池单元组40在插入方向E上通过插入开口32插入电池模块壳体30中。
插入方向E和厚度方向D可以接近相互正交地延伸。
电池单元组40的压缩可以借助于圆柱形滚筒R进行,优选地借助于带橡胶的圆柱形滚筒进行。圆柱形滚筒R可以被驱动或自由旋转地支承。
在厚度方向D上压缩电池单元组40可以与在插入方向E上插入电池单元组40同时进行。这尤其可以借助于这种圆柱形滚筒R实现。
圆柱形滚筒R可以以滚筒对的形式布置。在第一区段A中,滚筒R可以布置为漏斗形的并且在插入方向E上会聚,即滚筒对在插入方向E上具有逐渐变小的相互间隔。通过这个构型,电池单元组40可以通过电池单元组40在插入方向E上移动穿过第一区段A而在厚度方向D上被压缩。
在插入方向E上布置在第一区段A后方的第二区段B中,滚筒对可以具有保持不变的间隔并且用于将经压缩的电池单元组40导入插入开口32中。这个构型尤其在图3和图4中显示。
Claims (12)
1.一种用于机动车辆的电池模块,该电池模块包括具有插入开口(32)的电池模块壳体(30)和至少一个布置在该电池模块壳体(30)中的电池单元组(40),其中该电池单元组(40)具有至少两个相互平行布置的电池单元(42)和至少一个与这些电池单元(42)平行布置的压缩垫(44),其中该至少两个电池单元(42)和该至少一个压缩垫(44)在厚度方向(D)上以任意顺序相互堆叠,其中该电池单元组(40)在插入方向(E)上通过该插入开口(32)被插入该电池模块壳体(30)中,其特征在于,该电池单元组(40)还具有两个插入辅助层(46),这些插入辅助层分别构成该电池单元组(40)的在厚度方向(D)上对置的外侧面(41)。
2.根据权利要求1所述的电池模块,其特征在于,该电池模块壳体(30)由一体式的型材构成,尤其由铝挤出型材构成。
3.根据权利要1或2所述的电池模块,其特征在于,该电池单元组(40)具有两个与这些电池单元(42)平行布置的压缩垫(44),这些压缩垫分别布置在外侧的电池单元(43)与这些插入辅助层(46)中的一个插入辅助层之间。
4.根据权利要求1至3之一所述的电池模块,其特征在于,这些插入辅助层(46)分别由金属板构成。
5.根据权利要求1至3之一所述的电池模块,其特征在于,这些插入辅助层(46)分别由纤维增强的塑料构成。
6.根据权利要求5所述的电池模块,其特征在于,该纤维增强的塑料包括与该插入方向(E)平行延伸的纤维。
7.根据权利要求1至6之一所述的电池模块,其特征在于降低摩擦的涂层,该降低摩擦的涂层在外侧布置在这些插入辅助层(46)处,或者在内侧布置在该电池模块壳体(30)的与这些插入辅助层对置的内壁(34)处。
8.根据权利要求7所述的电池模块,其特征在于,该降低摩擦的涂层是聚四氟乙烯涂层。
9.根据权利要求1至8之一所述的电池模块,其特征在于,该至少两个电池单元(42)、该至少一个压缩垫(44)和这些插入辅助层(46)相互粘接。
10.一种用于制造根据权利要求1至9之一所述的电池模块(20)的方法,其特征在于以下方法步骤:
-提供设有插入开口(32)的电池模块壳体(30);
-提供电池单元组(40),该电池单元组具有至少两个相互平行布置的电池单元(42)和至少一个与这些电池单元(42)平行布置的压缩垫(44),其中该至少两个电池单元(42)和该至少一个压缩垫(44)在厚度方向(D)上以任意顺序相互堆叠,并且其中该电池单元组(40)还具有两个插入辅助层(46),这些插入辅助层分别构成该电池单元组(40)的在厚度方向(D)上对置的外侧面(41);
-在厚度方向(D)上压缩该电池单元组(40);以及
-将该经压缩的电池单元组(40)在插入方向(E)上通过该插入开口(32)插入该电池模块壳体(30)中。
11.根据权利要求10所述的方法,其特征在于,该插入方向(E)和该厚度方向(D)接近相互正交地延伸。
12.根据权利要求10或11所述的方法,其特征在于,该电池单元组(40)的压缩可以借助于圆柱形滚筒(R)进行,优选地借助于带橡胶的圆柱形滚筒进行。
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