CN103715378A - 电池模块以及电池模块的绝缘检查方法 - Google Patents
电池模块以及电池模块的绝缘检查方法 Download PDFInfo
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Abstract
本发明的课题在于,以简单的构成,不增加作业工序,容易地进行绝缘检查。为此,本发明的电池模块具备金属制的壳体(4)、和收纳于壳体(4)内的电池单元(3),壳体(4)在其外表面具备绝缘层(8)和导电部(11)。
Description
技术领域
本发明涉及电池模块及其绝缘检查方法。
背景技术
在现有技术中,作为电池模块,存在并列设置多个电池单元并收纳于壳体(casing)中的电池模块(例如,参照专利文献1)。
所述现有的电池模块,壳体由合成树脂材料构成。因此,强度不能说是很充分,在搭载于车辆的情况下有可能受到振动的影响。另一方面,若要充分增大强度,则壳体的占有体积变大,无法响应小型化的要求。
因此,将金属材料使用于壳体,谋求强度的提高。
另外,这样的金属制的壳体,通常,通过在壳体的表面实施涂覆(coating),来防止壳体的锈等。
在先技术文献
专利文献
专利文献1:日本特开2003—346749号公报
发明内容
发明要解决的课题
在此,在使用了金属制的壳体的电池模块中,若在制造时等电池单元在壳体内倾斜地配置等从而电池单元与壳体接触,则有可能流过微小的电流从而电池电压下降。因此,需要确认是否保持着壳体的绝缘。
但是,由于金属制的壳体在表面实施了涂覆,因此存在难以进行绝缘检查的问题。
本发明的课题在于,提供一种能够以简单的构成,无需增加作业工序,容易地进行绝缘检查的电池模块及其绝缘检查方法。
解决课题的手段
本发明的电池模块,作为解决所述课题的手段,具备:
金属制的壳体;和
收纳于所述壳体内的电池单元,
所述壳体在其外表面具备绝缘层和导电部。
通过该构成,尽管是仅预先在壳体形成导电部这一简单的构成,也能够经由该导电部容易地进行绝缘检查。
所述导电部优选为固定于所述壳体的金属构件。
所述导电部优选在贯通所述壳体以及所述绝缘层的状态下,固定于所述壳体。所述导电部优选为铆钉。
优选在所述壳体的内面形成向外侧凹陷的凹部,
所述铆钉的一端收纳于所述凹部内。
所述导电部优选是所述壳体的一部分。
优选具备在所述壳体和所述电池单元之间配置的绝缘片。所述绝缘层优选通过涂装而形成。
本发明的电池模块的绝缘检查方法,作为所述解决课题的手段,所述电池模块具备:
在外表面形成了绝缘层的金属制的壳体;和
收纳于所述壳体内的电池单元,
所述绝缘检查方法经由在所述壳体的外表面设置的导电部进行绝缘检查。
发明效果
根据本发明,因为预先在壳体形成导电部,所以尽管为简单的构成,也能够容易地进行绝缘检查。
附图说明
图1是本实施方式所涉及的电池模块单元的立体图。
图2是表示图1的电池模块和散热器的分解立体图。
图3是图2的电池模块的分解立体图。
图4是图3的筒体(胴)构件的局部剖面立体图。
具体实施方式
以下,按照附图对本发明所涉及的实施方式进行说明。另外,在以下的说明中,根据需要使用表示特定的方向或位置的用语(例如,包括“上”、“下”、“侧”、“端”在内的用语),但这些用语的使用是为了使参照附图的发明的理解容易,并不是通过这些用语的意思来限定本发明的技术范围。
此外,以下的说明,本质上只不过是例示,并不是意图限制本发明、其应用物、或者其用途。
图1是本实施方式所涉及的电池模块单元的立体图,图2表示其分解立体图。该电池模块单元由一对电池模块1构成,在电池模块1之间,配置有板状的散热器(heat sink)2。
如图3所示,各电池模块1将并列设置的4个电池单元3按2列进行配置,并将这些电池单元3收纳于壳体4内。
各电池单元3是锂离子电池等非水电解质二次电池,虽未图示,但例如成为在电池容器内收纳发电要素,并用盖体进行了密封的构成。
壳体4由设为剖面矩形的筒状的简体构件5构成,其上表面被盖构件6覆盖,其下表面被底构件7覆盖。
筒体构件5为了提高整体的刚性而由金属材料形成。但是,作为筒体构件5,为了以低价来获得希望的刚性而使用了铁等。因此,若直接使用筒体构件5,则有可能会生锈。因此,在筒体构件5的表面,形成有绝缘层8。绝缘层8由防锈性以及绝缘性优异的材料形成。绝缘层8例如能够通过阳离子电沉积涂装而形成。
如图4所示,在筒体构件5上,通过使内面的一部分向外侧凹陷而形成了凹部9。在凹部9的中央部分形成有贯通孔10。在此,在贯通孔10的周围施加掩膜(masking),在形成了上述绝缘层8之后去除该掩膜。因此,在贯通孔10的内周面没有形成绝缘层8,壳体4露出。在筒体构件5上,经由贯通孔10铆接固定了铆钉11。铆钉11由铝等具有导电性的材料构成。由此,能够使壳体4的没有形成绝缘层8的部分(贯通孔10内面)经由铆钉11与外部导通。
在筒体构件5的内表面粘贴有绝缘片12。如前所述,在壳体4形成有凹部9。因此,铆钉11的铆接部分不会从壳体4的内面向内侧突出。即,粘贴绝缘片12的内面是平坦的。因此,能够在壳体4的内面简单地粘贴绝缘片12。此外,在该粘贴时绝缘片12也不会被铆钉11损坏。进而,能够防止铆钉11的铆接部分与配置于壳体内的电池单元接触。
如图3所示,盖构件6由中盖13和外盖14构成,在中盖13上保持有电气设备(electrical equipment)(未图示)。中盖13通过对合成树脂材料进行成型加工而得到,形成有与各电池单元3相对应的、矩形状的多个开口部(未图示)。在中盖13上配置有多条线束(wire harness)(未图示)。在各线束17的一个端部连接有TAB端子,分别连接于各电池单元3的一方的电极。此外,相邻的电池单元3的一方的电极彼此之间通过汇流条(bus bar)而连接。由此,各电池单元3被串联连接。外盖14通过与中盖13同样地对合成树脂材料进行成型加工而得到,将筒体构件5的上表面封闭。
底构件7通过对合成树脂材料进行成型加工而得到,通过隔壁18形成了能够配置所述各电池单元3的定位凹部19。各定位凹部19的底面除了边缘部以外进行开口。只要将电池单元3分别配置于各定位凹部19,则电池单元3排列为4行2列。在各电池单元3之间配置有间隔件20。间隔件20粘贴于在宽度方向上相邻的一方的电池单元3的中央部分。通过将间隔件20配置于中央部分,能够有效地引导电池单元3的容易变形的部分。
接下来,对由所述构成形成的电池模块的制造方法进行说明。
在筒体构件5的侧壁上从内面向着外侧形成凹部9,并在其中央部分形成贯通孔10。此外,在筒体构件5的表面通过阳离子电沉积涂装形成绝缘层8。然后,从所形成的贯通孔10的内周面去除绝缘层8,使筒体构件5露出。下面,从筒体构件5的外面侧向贯通孔10插通铆钉11,并在凹部9内进行铆接,由此来固定于筒体构件5。在该状态下,铆钉11在贯通孔10的内周面与筒体构件5直接接触,并贯通绝缘层8而使头部露出于外部。此外,在筒体构件5的内面粘贴绝缘片12。在此情况下,铆钉11的铆接部分位于筒体构件5的凹部9内,没有从其表面露出。因此,能够顺利地进行绝缘片12的粘贴作业。此外,也不会发生铆钉11的一部分与绝缘片12接触,将绝缘片12损坏的情况。
接着,在底构件7的各定位凹部19分别配置电池单元3,并安装筒体构件5。在筒体构件5的上表面安装装有电气设备的中盖13。然后,用汇流条对相邻的电池单元3的一方的电极彼此之间进行连接。由此,电池单元3被串联连接。此外,将线束17的一个端部经由TAB端子连接于各电池单元3的一方的电极。线束17的另一个端部捆扎地连接于电气设备。最后,通过安装外盖14,电池模块完成。
在像这样完成的电池模块中,能够经由铆钉11的露出部分(头部)从外部检测绝缘状态。此外,之后不需要对铆钉11的露出部分实施任何加工,可以保持原有的状态。因此,不需要再次重新形成绝缘层8,经由铆钉11的露出部分进行多少次绝缘检测都可以,很经济。
另外,本发明不限定于所述实施方式中记载的构成,能够进行各种变更。
例如,在所述实施方式中,使用了铆钉11作为导电部,但能够以各种方式来构成,例如对棒状构件的两端部进行铆接,或者使用螺栓和螺母,或者通过焊接等将金属构件安装于壳体4等。
此外,在所述实施方式中,作为导电部,示出了将铆钉11等金属构件安装于壳体4的构成,但也可以揭下在壳体1的表面形成的绝缘层8的一部分而使壳体露出,将该露出部分作为导电部。
工业实用性
本发明所涉及的电池模块,除了可以采用为锂离子电池之外,还可以采用为铅蓄电池等各种电池。
符号说明
1...电池模块
2...散热器
3...电池单元
4...壳体
5...筒体构件
6...盖构件
7...底构件
8...绝缘层
9...凹部
10...贯通孔
11...铆钉(导通部)
12...绝缘片
13...中盖
14...外盖
16...开口部
18...隔壁
19...定位凹部
20...间隔件
Claims (9)
1.一种电池模块,具备:
金属制的壳体;和
收纳在所述壳体内的电池单元,
所述电池模块的特征在于,
所述壳体在其外表面具备绝缘层和导电部。
2.根据权利要求1所述的电池模块,其特征在于,
所述导电部是固定于所述壳体的金属构件。
3.根据权利要求1或2所述的电池模块,其特征在于,
所述导电部,在贯通所述壳体以及所述绝缘层的状态下,固定于所述壳体。
4.根据权利要求3所述的电池模块,其特征在于,
所述导电部是铆钉。
5.根据权利要求4所述的电池模块,其特征在于,
在所述壳体的内面,形成有向着外侧凹陷的凹部,
所述铆钉的一端收纳于所述凹部内。
6.根据权利要求1所述的电池模块,其特征在于,
所述导电部是所述壳体的一部分。
7.根据权利要求1~6中任一项所述的电池模块,其特征在于,
具备在所述壳体和所述电池单元之间配置的绝缘片。
8.根据权利要求1~7中任一项所述的电池模块,其特征在于,
所述绝缘层通过涂装而形成。
9.一种电池模块的绝缘检查方法,所述电池模块具备:
在外表面形成有绝缘层的金属制的壳体;和
收纳于所述壳体内的电池单元,
所述绝缘检查方法的特征在于,
经由在所述壳体的外表面设置的导电部进行绝缘检查。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-217468 | 2012-09-28 | ||
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CN108459236A (zh) * | 2018-05-09 | 2018-08-28 | 奥克斯空调股份有限公司 | 一种用于大功率器件散热器的漏电检测结构 |
CN108604664A (zh) * | 2016-02-10 | 2018-09-28 | 株式会社杰士汤浅国际 | 蓄电元件以及蓄电元件的制造方法 |
CN108666484A (zh) * | 2017-03-29 | 2018-10-16 | 孚能科技(赣州)有限公司 | 电池外壳及其制备方法和电池模组 |
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KR20220153372A (ko) * | 2021-05-11 | 2022-11-18 | 현대자동차주식회사 | 배터리 모듈 셀 파우치 절연 저항 검사 시스템 |
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EP2713418B1 (en) | 2017-06-07 |
US20140091805A1 (en) | 2014-04-03 |
CN103715378B (zh) | 2017-06-13 |
JP6135083B2 (ja) | 2017-05-31 |
US9312578B2 (en) | 2016-04-12 |
KR20140042670A (ko) | 2014-04-07 |
KR102124958B1 (ko) | 2020-06-19 |
EP2713418A1 (en) | 2014-04-02 |
JP2014072051A (ja) | 2014-04-21 |
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