CN117203832A - 密封电池壳体 - Google Patents

密封电池壳体 Download PDF

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CN117203832A
CN117203832A CN202280028053.7A CN202280028053A CN117203832A CN 117203832 A CN117203832 A CN 117203832A CN 202280028053 A CN202280028053 A CN 202280028053A CN 117203832 A CN117203832 A CN 117203832A
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metal frame
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A·马蒂厄
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Renault SAS
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Abstract

本发明涉及一种两件式电池壳体,包括底部壳体(2)和顶部壳体。根据本发明,附有金属框架(101)的EPDM密封件(102)被插入在该底部壳体(2)与该顶部框架之间,以确保所获得的壳体的良好水密性。

Description

密封电池壳体
技术领域
本发明涉及一种密封电池壳体。
背景技术
一般而言,牵引电池由结构性底部壳体和非结构性顶部壳体组成。底部壳体优选地由金属制成并且构成围绕所述电池的模块的框架。顶部壳体仅确保水密性和电磁流密封性。
顶部壳体与底部壳体之间的水密性可以通过EPDM(乙烯-丙烯-二烯单体)唇形密封件来确保,该密封件特别适合这种类型的构造。随着电池大小的增大,这些EPDM密封件变得越来越大,并且为了优化结构,它们也变得越来越薄。现在,在组装这种壳体时,太大太薄的EPDM密封件很难操纵。
申请CN 107946515披露了一种具有唇形密封件和两个壳体的电池壳体,该唇形密封件旨在插入在所述两个壳体之间。密封件由EPDM制成,并且可以安装在外壳的底部壳体上。密封件分布在连接这两个壳体的整个表面上,从而围绕这些壳体的固定点。这种解决方案在组装期间尤其存在上述缺点。
发明内容
根据本发明的电池的壳体使得能够克服现有技术中遇到的缺点。
本发明的主题是一种电池壳体,其旨在容纳所述电池的至少一个模块,所述壳体由两部分制成,该两部分包括具有平坦接合缘的底部壳体和具有平坦接合面的顶部壳体,该底部壳体和该顶部壳体能够通过将该平坦接合缘放置成与该平坦接合面接触而彼此抵靠以形成该壳体,EPDM密封件被插入到该平坦接合缘与该平坦接合面之间,以便使该壳体密封。
根据本发明,金属框架被固定到该EPDM密封件,以增加所述密封件的刚性,由该EPDM密封件和该金属框架组成的组件被插入在该底部壳体的平坦接合缘与该顶部壳体的平坦接合面之间。
包括该EPDM密封件和该金属框架的组件构成了刚性的最终密封件,其通过该金属框架具有刚性部件并通过该EPDM密封件具有密封性部件。该金属框架由遵循该EPDM密封件的轮廓的金属杆实施。该金属框架可以存在于该EPDM密封件的整个长度上,也可以存在于所述EPDM密封件的某些区段上。该金属框架的存在是合理的,因为它使得可以加固该EPDM密封件,从而使得机器人能够轻松、精确地操纵最终的密封件,以便将其放置在底部壳体的平坦接合缘上的正确位置。作为示例,如果底部壳体的平坦接合缘具有矩形框架的形式,则EPDM密封件也将具有矩形框架的形式,并且金属框架也将具有完全或部分地伴随所述EPDM密封件的矩形框架的一般形式。术语“底部”和“顶部”表示当包含电池的壳体将被安装在车辆中时这两个壳体的定位。
根据本发明的可能特征,在平坦接合缘上,EPDM密封件占据中心位置,而金属框架占据偏心位置。以这种方式,由于平坦接合缘具有一定的宽度,因此EPDM密封件不会存在与平坦接合缘分离的风险,并且不会存在不再完全靠在所述接合缘上并因此不再确保底部壳体与顶部壳体之间的良好密封性的风险。通过将密封件放置在平坦接合缘上的中心位置,所述密封件将完全且牢固地靠在所述接合缘上。平坦接合缘具有一定的长度和宽度,并且应当相对于该宽度来考虑上述中心位置。
根据本发明的可能特征,底部壳体的平坦接合缘具有旨在与顶部壳体的互补固定点配合的几个固定点,所述固定点通过沿着所述接合缘的纵向和中心轴线对齐而从平坦接合缘伸出,EPDM密封件夹紧所述固定点。这些固定点可以例如由从平坦接合缘伸出的螺纹圆柱形插入件来表示。有利地,EPDM密封件具有旨在用于所述固定点穿过的孔。这些固定点除了实现其原始功能外,还充当将EPDM密封件正确定位在平坦接合缘上的引导元件。
根据本发明的可能特征,EPDM密封件以使得所述固定点沿着所述密封件的纵向和中心轴线对齐的方式来夹紧这些固定点。
根据本发明的可能特征,EPDM密封件包覆成型在金属框架上。
根据本发明的可能特征,金属框架的长度小于或等于EPDM密封件的长度。事实上,金属框架可以具有的长度与EPDM密封件的长度相同,或者可以具有的长度小于EPDM密封件的长度、同时继续加固EPDM密封件。事实上,机器人不需要具有在EPDM密封件的整个长度上延伸的刚性框架,就能够高效且精确地操纵由EPDM密封件和金属框架组成的组件。
根据本发明的可能特征,金属框架的长度严格小于EPDM密封件的长度,使得所述金属框架沿着所述EPDM密封件呈现不连续。这样,金属框架沿着EPDM密封件均匀分布,而不会产生其中密封件未被金属框架加固的明显区域。
根据本发明的可能特征,EPDM密封件具有没有任何金属框架的区域,所述区域各自包括连接具有金属框架的两个区域的主要部分、以及与该主要部分成直角地交叉的至少一个次要部分。
根据本发明的可能特征,EPDM密封件的不具有金属框架的每个区域具有与主要部分成直角地交叉的三个平行的次要部分。这代表“鱼骨”构造,其中密封件的主要部分被与所述主要部分成直角地延伸的三个平行的次要部分交叉。
根据本发明的可能特征,框架由选自钢和铝的金属制成。这些材料特别但不排他地适用于旨在固定至EPDM密封件的金属框架,以用于生产根据本发明的电池壳体。
根据本发明的电池壳体通过将金属框架巧妙地固定到EPDM密封件而提供了完全密封同时容易且快速地制造的优点。此外,这种壳体的优点是继续具有与现有壳体相同的恒定体积,同时完全密封。
附图说明
下文参考以下附图对根据本发明的电池壳体的两个优选实施例进行了详细描述:
[图1]表示用于生产根据本发明的壳体的第一实施例的底部壳体的接合缘的区域的立体图,
[图2]表示图1的接合缘的区域的截面视图,
[图3]表示用于生产根据本发明的壳体的第二实施例的底部壳体的接合缘的区域的立体图,
[图4]表示图3的接合缘的区域的截面视图,
[图5]表示用于生产根据本发明的壳体的第二实施例的底部壳体的接合缘的特定区域的立体图,所述区域示出了不连续的金属框架。
具体实施方式
机动车辆的电池包括壳体,所述电池的模块容纳在该壳体中。该壳体分为两部分,包括底部壳体2和顶部壳体,所述底部壳体2界定旨在用于接纳电池的模块的容器,并且该顶部壳体用作旨在盖住底部壳体2的盖子。
作为非限制性示例,参考不同的附图,底部壳体2具有矩形平坦底部和从所述矩形底部的四个外周边缘伸出的四个平坦侧壁3,所述侧壁3与所述底部邻接并且成直角。这样,底部壳体2界定了开放的平行六面体容器,电池的模块被放置在该容器中。这四个侧壁3各自具有细长的自由边缘4,该自由边缘平行于底部壳体2的所述壁与底部之间的接合线。这四个侧壁3具有恒定的高度,所述高度是沿着与底部壳体的底部成直角的轴线考虑的侧壁尺寸。这样,侧壁的四个自由边缘位于与所述底部平行的同一平面内。每个自由边缘4由与底部壳体2的底部平行的平坦表面5实施,所述自由边缘4的四个平坦表面5位于同一平面中并且限定平坦接合缘6,该平坦接合缘可以被比作平坦矩形框架。
图中未表示的顶部壳体具有平坦接合面,该平坦接合面旨在与底部壳体2的平坦接合缘6接触以形成容纳电池的封闭壳体。
为了确保底部壳体2与顶部壳体之间良好的水密性,在底部壳体的接合缘6上放置了EPDM密封件,使得当所述两个壳体被组装在一起时,所述密封件被压紧在底部壳体2与顶部壳体之间。
现在,这种类型的密封件经常遇到的一个问题是,所述密封件长且薄,因此刚性低,这使得其难以(尤其是由机器人)操纵以将其正确放置在底部壳体2的接合缘上。
根据本发明的壳体通过将金属框架固定到EPDM密封件来解决该问题,以便获得更刚性并且因此更易于操作的最终密封件。优选地并且以非限制性的方式,该金属框架由钢或铝制成。有利地并且以非限制性的方式,EPDM密封件包覆成型在金属框架上。
参考图1和图2,根据本发明壳体50的第一优选实施例,金属框架51和EPDM密封件52沿着底部壳体2的平坦接合缘6平行延伸,使得所述金属框架51位于所述接合缘6上的中心位置,而EPDM密封件52位于所述接合缘6上的偏心位置。表述“中心位置”和“偏心位置”应当相对于接合缘6的宽度来考虑。底部壳体2的接合缘6具有旨在与顶部壳体的互补固定点配合的固定点7。这些固定点7呈现为螺纹圆柱形插入件的形式,从接合缘6伸出。这些固定点7沿着接合缘6均匀地间隔开,并且考虑到该边缘6的宽度而放置在所述接合缘6上的中心位置。对于本实施例,金属框架51在其长度上具有一系列圆形孔53,这些孔的直径大于实施固定点的插入件7的直径。因此,金属框架51被放置在接合缘6上的中心位置,使得每个孔53容纳插入件7。为了能够绕过这些插入件7,金属框架53具有显著的宽度,该宽度大于EPDM密封件52的宽度。由于金属框架52的这种显著宽度,EPDM密封件52在界定接合缘6的宽度的端部边缘处被推回。
参考图2,这种构造的风险在于EPDM密封件52不再完全靠在接合缘6上,因此不再充分有效地确保底部壳体2与顶部壳体之间的良好密封性。事实上,如图2所展示,EPDM密封件52的一部分54延伸出接合缘6,因此不能完全压靠在所述平坦接合缘6上。这种构造的结果是EPDM密封件52不再充分有效地确保其在底部壳体2与顶部壳体之间的密封功能。
参考图4、图5和图6,为了检查EPDM密封件102是否将完全靠在底部壳体2的平坦接合缘6上,根据本发明的壳体100的第二优选实施例,所述EPDM密封件102和金属框架101的位置相对于先前描述的第一实施例是相反的。事实上,对于该第二优选实施例100,金属框架101和EPDM密封件102沿着底部壳体2的平坦接合缘6平行延伸,使得所述EPDM密封件位于所述接合缘6上的中心位置,而金属框架101位于所述接合缘6上的偏心位置。表述“中心位置”和“偏心位置”应当相对于接合缘6的宽度来考虑。以这种方式,通过位于中心位置,EPDM密封件102将肯定完全靠在底部壳体2的平坦接合缘6上,并且将充分确保其在底部壳体2与顶部壳体之间的密封功能。对于本实施例,EPDM密封件102在其长度上具有一系列圆形孔103,这些孔的直径大于实施固定点的插入件7的直径。因此,EPDM密封件102被放置在接合缘6上的中心位置,使得每个孔103容纳插入件7。为了能够绕过这些插入件7,EPDM密封件具有显著的宽度,该宽度大于金属框架101的宽度。
如图4所展示,EPDM密封件102以一定的安全裕度保持完全压靠底部壳体2的平坦接合缘6。事实上,在该中心位置,EPDM密封件102不存在看到其在平坦接合缘6上的位置偏离到不再完全压靠所述平坦接合缘6的程度的风险。
参考图5,其涉及根据本发明的壳体100的第二优选实施例,金属框架101不必在EPDM密封件102的整个长度上延伸。事实上,经检验,EPDM密封件102可以由机器人以相同的效率来操纵,无论金属框架101是在所述EPDM密封件102的整个长度上延伸,还是仅部分地沿着该EPDM密封件102延伸。当金属框架101没有在整个EPDM密封件102上延伸时,其优选地沿着该EPDM密封件102呈现不连续,使得由EPDM密封件102和金属框架101形成的最终密封件交替出现具有金属丝网101的区域104和没有金属丝网101的区域105。在没有金属丝网101的区域105中,EPDM密封件102呈现特定的形式,即,由连接具有金属丝网101的两个区域104的主要部分106、以及与主要部分106成直角地交叉的三个平行的次要部分107、108、109组成。主要部分106的宽度小于EPDM密封件102在设置有金属丝网101的区域104中的宽度。这三个次要部分107、108、109倾向于在没有任何金属丝网101的区域105中将EPDM密封件102“散布”在底部壳体2的平坦接合缘6上,以增加所述EPDM密封件102在所述区域105中的密封能力。
由于EPDM密封件102优选地包覆成型在金属框架101上,因此没有任何金属丝网101的区域105的产生使得可以使用较小的模具,因为EPDM密封件102然后可以在这些没有任何金属丝网101的区域105中折叠在所述模具中。使用较小的模具使得可以显著降低由EPDM密封件102和不连续金属丝网101组成的组件的制造成本。

Claims (10)

1.一种电池壳体(50,100),旨在容纳所述电池的至少一个模块,所述壳体(50,100)由两部分制成,该两部分包括具有平坦接合缘(6)的底部壳体(2)和具有平坦接合面的顶部壳体,该底部壳体(2)和该顶部壳体能够通过将该平坦接合缘(6)放置成与该平坦接合面接触而彼此抵靠以形成该壳体,EPDM密封件(52,102)被插入在该平坦接合缘(6)与该平坦接合面之间,以便使该壳体密封,其特征在于,金属框架(51,101)被固定到该EPDM密封件(52,102),并且由该EPDM密封件(52,102)和该金属框架(51,101)组成的组件被插入在该底部壳体(2)的平坦接合缘(6)与该顶部壳体的平坦接合面之间。
2.如权利要求1所述的电池壳体,其特征在于,在该平坦接合缘(6)上,该EPDM密封件(102)占据中心位置,而该金属框架(101)占据偏心位置。
3.如权利要求2所述的电池壳体,其特征在于,该底部壳体(2)的平坦接合缘(6)具有旨在与该顶部壳体的互补固定点配合的几个固定点(7),所述固定点(7)通过沿着所述接合缘(6)的纵向和中心轴线对齐而从所述接合缘(6)伸出,并且该EPDM密封件(102)通过夹紧这些固定点而绕过所述固定点(7)。
4.如权利要求3所述的电池壳体,其特征在于,该EPDM密封件(102)以使得所述固定点(7)沿所述密封件(102)的纵向和中心轴线对齐的方式来夹紧这些固定点(7)。
5.如权利要求1至4中任一项所述的电池壳体,其特征在于,该EPDM密封件(52,102)包覆成型在该金属框架(51,101)上。
6.如权利要求1至5中任一项所述的电池壳体,其特征在于,该金属框架(101)的总长度小于或等于该EPDM密封件(102)的总长度。
7.如权利要求6所述的电池壳体,其特征在于,该金属框架(101)的总长度严格小于该EPDM密封件(102)的总长度,使得所述金属框架(101)沿着所述EPDM密封件(102)呈现不连续。
8.如权利要求7所述的电池壳体,其特征在于,该EPDM密封件(102)具有没有任何金属框架(101)的区域(105),并且所述区域(105)各自包括连接具有该金属框架(101)的两个区域(104)的主要部分(106)、以及与该主要部分(106)成直角地交叉的至少一个次要部分(107,108,109)。
9.如权利要求8所述的电池壳体,其特征在于,该EPDM密封件(102)的没有任何金属框架(101)的每个区域(105)具有与该主要部分(106)成直角地交叉的三个平行的次要部分(107,108,109)。
10.如权利要求1至9中任一项所述的电池壳体,其特征在于,该金属框架(101)由选自钢和铝的金属制成。
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