CN104521023A - 用于制造锂离子电池模块的方法和相应的锂离子电池模块 - Google Patents

用于制造锂离子电池模块的方法和相应的锂离子电池模块 Download PDF

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CN104521023A
CN104521023A CN201380022643.XA CN201380022643A CN104521023A CN 104521023 A CN104521023 A CN 104521023A CN 201380022643 A CN201380022643 A CN 201380022643A CN 104521023 A CN104521023 A CN 104521023A
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N·多奇
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Robert Bosch GmbH
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Abstract

本发明提出了用于制造锂离子电池模块(B)的方法，该方法具有如下步骤：在电池模块(B)的至少两个电池(Z)之间布置弹塑性装置(F；F；E)；路径受控地压制电池模块(B)的所述至少两个电池(Z)和布置在所述至少两个电池(Z)之间的弹塑性装置(F；F′；E)。此外，本发明提出了一种相应的锂离子电池模块(B)。

Description

用于制造锂离子电池模块的方法和相应的锂离子电池模块
技术领域
本发明涉及一种用于制造锂离子电池模块的方法和一种相应的锂离子电池模块。
背景技术
图3示出了构造机械压制的电池的示例性布置的示意图。
在图3中，附图标记10表示电子装置的盖板，20表示控制电子装置，30表示激光焊接的连接轨，40表示连接盖，50表示压力带，60表示压力板，70表示棱柱形的锂离子电池以及附图标记80表示冷却体。
已知的是，在某些情况下作用于锂离子电池上的机械压力对其使用寿命有积极影响。
此外，机械压制常常用于机械固定。为了热接触以冷却电池也常常压制电池。在特别薄并且容易构建的电池结构形式譬如袋式电池或较为硬的棱柱形金属壳电池中特别是常常看到机械压制的电池。
现有技术根据DE 10 2009 010 148 A1例如是原电池的放电器或用于其接触的接触元件，其至少局部具有表面结构，该表面结构在放电器与接触元件力配合的连接时提高相继施加到放电器和接触元件上的压力。
此外已知的是，常常使用弹性元件譬如弹性膜来“路径受控地”引入载荷力。
因此，用于引入按压力的新型、牢固和成本低廉的方案是值得期望的。在此情况下，尤其考虑电池在其使用寿命上变得更厚且更鼓。此外，要找到一个方案，其耐受制造过程中的波动，这些会导致电池密度不同。
发明内容
本发明通过如下方式来解决上述任务：其提出了用于制造锂离子电池模块的方法，该方法具有如下步骤：在电池模块的至少两个电池之间布置弹塑性装置；路径受控地压制电池模块的至少两个电池和布置在所述至少两个电池之间的弹塑性装置。
此外，本发明提出了一种相应的锂离子电池模块。
优选的改进方案是相应的从属权利要求的主题。
本发明的优点
根据一种优选的改进方案，弹塑性装置是弹塑性膜，其仅具有一定的弹性的回弹分量。通过使用纯粹弹塑性膜和由此不使用粘弹性膜(其展现出与时间有关的塑性行为)，得到了如下优点。
膜的塑性部分补偿了电池中的密度差，如其在制造过程之后会出现的那样。电池的呼吸、在电池充电和放电时电池密度的膨胀和收缩通过弹性部分来补偿并且因此在很大程度上与膜的整个挤压无关。电池随着其老化的增长通过塑性部分来补偿，使得对电池的压力仅略微小地增加。电池表面的不平坦如鼓起的形状通过塑性补偿并且电池承受均匀负载。
根据一种优选的改进方案(其中弹塑性膜为膨胀的石墨)得到如下优点：膨胀的石墨具有出色的导热性并且对电池的调温有积极影响。
根据一种优选的改进方案(其中电池形状是圆形的)得到良好热连接的优点。
根据一种优选的改进方案(其中使用纯粹塑性的膜并且弹性特性通过至少一个弹性元件来提供)，得到了如下优点：可以将多种材料应用于根据本发明的方法。
本发明的其他特征和优点从以下参考所附的附图的描述来得到。
附图说明
在附图中：
图1a)示出了按照根据本发明的方法的一种实施形式制造的锂离子电池模块的示意图；
图1b)示出了根据图1a)的锂离子电池模块的壳体的示意图；
图2示出了按照根据本发明的方法的另一种实施形式制造的锂离子电池模块的示意图；
图3示出了机械预张紧的电池的示例性布置的结构的示意图。
在这些图中，相同的附图标记表示相同或功能相同的元件。
具体实施方式
图3示出了构造机械压制的电池的示例性布置的示意图。
在图3中，附图标记10表示电子装置的盖板，20表示控制电子装置，30表示激光焊接的连接轨，40表示连接盖，50表示压力带，60表示压力板，70表示棱柱形的锂离子电池以及附图标记80表示冷却体。
图1a是按照根据本发明的方法的一种实施形式制造的锂离子电池模块的示意图以及图1b是按照根据本发明的方法的一种实施形式制造的锂离子电池模块的壳体的示意图。
在图1a)、b)中，附图标记Z表示电池模块的电池。附图标记F表示弹塑性膜而L是电池和膜构成的整个布置的纵向伸展。B表示电池模块。P表示路径受控的挤压过程进行的方向。
按照根据本发明的方法的第一实施形式，在电池模块的通常棱柱形的电池Z之间置有弹塑性膜例如由膨胀的石墨制成。
在将堆叠结构挤压在一起时，产生一作用于弹塑性膜F上的增大的压力，该膜在超过通过膜F的材料特性设定的压力时塑性屈服。电池Z和弹塑性膜F构成的堆叠结构被路径受控地压制。
“路径受控地”理解为，挤压过程沿着预给定的路径P进行至限定的端点。
在根据本发明的方法的另一种有利的实施形式中，可以使用其他弹塑性膜F，其并不由膨胀的石墨构成。
图2示出了按照根据本发明的方法的另一种实施形式制造的锂离子电池模块的示意图。
在图2中，附图标记Z表示电池模块的电池。附图标记F′表示塑性膜而附图标记E表示弹性元件例如弹簧。
尤其是，根据本发明的方法也可以应用于具有良好热连接的圆形电池Z。
尽管本发明参照优选的实施例来描述，但本发明并不限于此。尤其，所述的材料和拓扑结构仅为示例性的而不限于所阐述的例子。

Claims (11)

1.用于制造锂离子电池模块(B)的方法，该方法具有如下步骤：
在电池模块(B)的至少两个电池(Z)之间布置弹塑性装置(F；F′；E)；
路径受控地压制电池模块(B)的所述至少两个电池(Z)和布置在所述至少两个电池(Z)之间的弹塑性装置(F；F′；E)。
2.根据权利要求2所述的方法，
其中，多个分别具有弹塑性装置(F；F′；E)的电池(Z)在两个相邻的电池(Z)之间路径受控地被压制。
3.根据权利要求1或2所述的方法，
其中，所述弹塑性装置是弹塑性膜(F)。
4.根据权利要求3所述的方法，
其中，所述弹塑性膜(F)是膨胀的石墨。
5.根据权利要求1或2所述的方法，
其中，电池(Z)的形状是棱柱形的和/或圆形的。
6.根据权利要求1或2所述的方法，
其中，纯粹塑性的膜(F′)与至少一个弹性元件(E)组合地用作弹塑性装置。
7.锂离子电池模块(B)，
其具有如下部件：至少两个压制的电池(Z)和布置在至少两个所述电池(Z)之间的弹塑性装置(F；F′；E)。
8.根据权利要求7所述的锂离子电池模块(B)，
其中，所述弹塑性装置是弹塑性膜(F)。
9.根据权利要求8所述的锂离子电池模块(B)，
其中，弹塑性膜(F)是膨胀的石墨。
10.根据权利要求7所述的锂离子电池模块(B)，
其中，电池(Z)的形状是棱柱形的和/或圆形的。
11.根据权利要求7所述的锂离子电池模块(B)，
其中，纯粹塑性的膜(F′)与至少一个弹性元件(E)组合地用作弹塑性装置。
CN201380022643.XA 2012-04-30 2013-03-11 用于制造锂离子电池模块的方法和相应的锂离子电池模块 Pending CN104521023A (zh)

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DE102012207162.8 2012-04-30
DE201210207162 DE102012207162A1 (de) 2012-04-30 2012-04-30 Verfahren zur Herstellung von Li-Ionen Batteriemodulen und ein entsprechendes Li-Ionen Batteriemodul
PCT/EP2013/054892 WO2013164119A1 (de) 2012-04-30 2013-03-11 Verfahren zur herstellung von li-ionen batteriemodulen und ein entsprechendes li-ionen batteriemodul

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US11114725B2 (en) 2018-08-13 2021-09-07 Wisk Aero Llc Capacitance reduction in battery systems

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US20150104693A1 (en) 2015-04-16
US9705156B2 (en) 2017-07-11
WO2013164119A1 (de) 2013-11-07
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