CN101048890B - 锁定型电池包 - Google Patents
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Abstract
这里公开了一种的电池包,其具有形成在上盖上的锁定部件和形成在壳体上的锁定槽,使得该锁定部件能与相应的锁定槽接合。通过机械式接合方法而不用超声波焊接方法,完成该电池包的组装,并且该电池包用高强度材料制成。因此,该电池包能在其厚度进一步降低的同时被制出。
Description
技术领域
本发明涉及一种锁定型电池包,更具体地,涉及一种电池包,其具有形成在上盖上的锁定部件和形成在壳体处的锁定槽,使得该锁定部件能接合在相应的锁定槽中,从而能通过机械式的接合方法来组装电池包,而不需通过超声波焊接方法,并且能使电池包以高强度材料来制造,使得电池包的厚度能进一步降低。
背景技术
随着移动设备的迅速发展以及对这样的移动设备的需求增加,对于作为电源用于移动设备的充电电池的需求也显著增加。充电电池中的一种为具有高能量密度和放电电压的锂充电电池,展开了很多关于该电池的研究,且该电池如今已被广泛地投入商用。
基于其外形,锂充电电池可分为圆柱形电池、矩形电池或袋状电池。基于其电解液,锂充电电池可分为锂离子电池或锂离子聚合物电池。
随着移动设备的小型化,对于具有较小厚度的矩形电池和袋状电池的需求在增大。在图1中显示了电池包的典型形状,它是这样的小厚度充电电池的一个例子。图2示出了组装之前的电池包的分解透视图。
参考图1和图2,电池包100包括:具有电极组的矩形芯板200,其包括阴极、阳极、隔离膜以及以密封状态安装在其中的电解液;具有用于容纳芯板200的内部空间的壳体300;和安装在具有容纳于其中的芯板200的壳体300上的上盖400,用于密封芯板200。
通常,通过超声波焊接的方法来使上盖400和壳体300彼此接合,完成具有上述结构的电池包100的组装,其中上盖400和壳体300由诸如聚碳酸酯(PC)或聚丙烯腈-丁二烯-苯乙烯(ABS)的塑性材料制成。超声波焊接方法使用通过例如20,000Hz的高频振动而产生的摩擦热来把两个表面焊接在一起。
以下参考图3至图6更具体地说明通过超声波焊接的方法来接合壳体300和上盖400。图3为示出安装在壳体300上的上盖400的平面图,图4为沿图3的线A-A剖开的垂直截面图。上盖400安装在壳体300上,该上盖400的相对端部分别与壳体300的相对端部接触。图5为示出了上盖和壳体之间的接触区域的放大图,图6为示出了通过超声波焊接方法接合上盖和壳体的视图。如图5中所示,有楔形焊接突起400a形成在每个上盖400的端部的下表面处,且有焊接表面300a形成在壳体300处,使得焊接突起400a与焊接表面300a相接触。当施加高频振动以完成上盖和壳体之间的超声波焊接时,焊接突起400a和焊接表面300a被焊接在一起,因此使上盖紧固地与壳体相接合。
随着对较小厚度电池包的需求的增加,近来壳体300和上盖400的厚度已经降低到0.3至0.35mm。因此,难以通过压铸和注模来形成壳体和上盖。而且,焊接突起400a和焊接表面300a的尺寸也减小,因此壳体和上盖之间的焊接强度降低,因而增加了焊接失败率。
在使用圆柱形金属壳电池的情况下,由于金属壳的机械特性,即使当壳的厚度较小时,该壳也能提供抵抗外部冲击的适当的强度。但是,具有如图1中所示结构的锂离子聚合物电池不具有抵抗外部冲击的适当的结构强度,因此在锂离子聚合物电池中使用较小厚度的壳体受到了限制。
因此,需要提供一种即使使用较小厚度的壳也具有抵抗外部冲击的适当强度的电池包,且该电池包具有在上盖和壳体之间的提高的接合强度。
发明内容
因此,本发明的目的是基本消除现有技术中的上述问题以及以前存在的技术问题。
本发明人对电池包的结构已经进行了各种实验和研究,并发现当有锁定部件形成在电池包的上盖处,且有锁定槽形成在电池包的壳体处,使得锁定部件能与相应的锁定槽接合时,该电池包能通过机械式的接合方法而不通过超声波焊接方法来组装,并且该电池包能用高强度材料制造,从而进一步降低电池包的厚度。
根据本发明,通过该电池包能实现上述以及其它目的,该电池包包括:具有电极组的矩形芯板,该芯板包括阴极、阳极、隔离膜以及以密封状态安装在该芯板中的电解液;具有用于容纳该芯板的内部空间的壳体;以及安装在该壳体上、用于密封所述芯板的上盖,所述壳体使芯板容纳于其中,其中,在上壳的边缘处设置有多个弹性锁定部件,在所述壳体的边缘处设置有多个锁定槽,该锁定槽对应于所述上壳的锁定部件,使得所述上壳的锁定部件插入到所述壳体的锁定槽中,而所述芯板容纳在所述壳体中,从而所述上盖与所述壳体接合。
根据本发明,上盖能通过机械式的接合方法而不通过超声波焊接方法来与壳体接合。
因此,不需要将用于上盖和壳体的材料限制为超声波焊接材料。优选地,上壳由具有比所述壳体中形成所述锁定槽的区域的强度和弹性更高的材料制成。在优选实施例中,上盖由不锈钢(SUS)制成,壳体由塑性材料制成,例如聚碳酸酯(PC)或聚丙烯腈-丁二烯-苯乙烯(ABS)。或者,壳体可以只在其形成锁定槽的区域处由塑性树脂制成。
当将SUS材料用作用于电池包的材料时,能够制造出具有高强度且进一步降低厚度(例如0.1至0.2mm)的电池包。
对锁定部件和锁定槽的结构没有特别地限制,只要当锁定部件接合到锁定槽内时,例如当突起状的锁定部件插入到凹入状的锁定槽内时,能保持该锁定部件和锁定槽之间的接合即可。在优选实施例中,每个所述锁定部件都包括一对锁定突起,该对锁定突起彼此相连,同时在该对锁定突起之间形成有间隔槽,在该对锁定突起的外侧上设置有形成为向下的锥形的突起,且每个所述锁定槽的宽度小于所述锁定突起的所述突起之间的最大距离。
在另一优选实施例中,壳体包括:形成为与所述上盖相同形状的下盖,在该下盖的边缘处设置有多个锁定部件;和具有多个锁定槽的矩形主体框架,该锁定槽对应于所述上下盖的锁定部件。
对于形成在上盖边缘(或是上下盖的边缘)的锁定部件的数量和位置没有特别的限制。优选地,锁定部件被均一地布置在上盖的边缘(或是上下盖的边缘)。
根据本发明的电池包对于用于锂离子聚合物电池的电池包非常有用。
附图说明
结合附图从以下的具体描述中能更清楚地了解本发明的上述及其它目的、特征和优点,其中:
图1为常规电池包的透视图;
图2为常规电池包在组装之前的分解透视图;
图3为安装在图2所示的常规电池包的壳体上的上盖的平面图;
图4为沿图3的线A-A剖开的垂直截面图;
图5为图4的B部分的放大视图;
图6为图5中所示的组件的视图,该组件通过超声波焊接方法来彼此接合;
图7为根据本发明的优选实施例的电池包在组装之前的分解透视图;
图8为与图7所示的电池包的壳体相接合的上盖的平面视图;
图9为沿图8中的线C-C剖开的垂直截面图;
图10-12为按顺序示出图9中的D部分处的接合过程的视图;
图13为根据本发明的另一优选实施例的电池包在组装之前的分解透视图。
附图标记说明
100: 电池包
200: 芯板
300: 壳体
400: 上盖
500: 下盖
600: PCM
700: 电极引线
800: PTC
900: 绝缘部件
1000:双面粘接带
1100:浸没标签
具体实施方式
现在参考附图对本发明的优选实施例进行具体说明。但需要注意的是,本发明的范围并不限于所述实施例。
图7为根据本发明的优选实施例的电池包100在组装之前的分解透视图。
参考图7,电池包1 00包括:具有电极组的芯板200,该芯板包括阴极、阳极、隔离膜以及以密封状态安装在其中的电解液;用于容纳芯板200的壳体300;和与壳体300接合、用于密封芯板200的上盖400。
芯板200具有阴极接头210和阳极接头220,两者均露在外面。阴极接头210通过阴极引线700而连接到保护电路模块(PCM)600。阳极接头220通过阳极引线710而连接到PCM600,该阳极引线710连接到正温度系数元件(PTC)800。
上盖400由SUS材料制成,因此当上盖400与PCM600、电极引线700和710以及PTC800相接触时,上盖400就有可能短路。因此,有绝缘部件900设置在上盖400和PCM 600/电极引线700和710/PTC800之间。而且,有双面粘接带1000设置在壳体300和芯板200之间以及上盖400和芯板200之间,使得芯板200在安装于由壳体300和上盖400限定的空间内的同时能被稳固地固定。
在上盖400的边缘处可形成有多个朝壳体300延伸的锁定部件410。在壳体300处形成有若干锁定槽310,该锁定槽310对应于上盖400的锁定部件410。壳体300包括由SUS材料制成的外壳体部分302,和由塑料材料制成的内壳体部分304。锁定槽310形成在内壳体部分304处。
电极接头210和220之间以及电极引线700和710之间的连接被焊接起来,且PCM600与电极引线700和710之间的连接被焊接起来。在将芯板200位于壳体300的内部空间内以及上盖400放置到壳体300上之后,上盖400的锁定部件410插入到壳体300的相应的锁定槽310中,以完成电池包100的组装。在电池包100的组装完成后,将浸没标签1100贴到壳体300的上端部。
下面参考图8-12更具体地说明上盖400和壳体300之间的接合。
图8为与壳体300相接合的上盖400的平面视图,图9为沿图8中的线C-C剖开的垂直截面图。图10-12为按顺序示出部分D处的接合过程的视图,在部分D处,锁定部件中的一个被接合在相应的锁定槽内。
首先参考图10,每个锁定部件410都包括一对左右锁定突起414a和414b,这两个突起彼此连接,同时在这两个锁定突起414a和414b之间形成有间隔槽412。在锁定突起414a和414b的外侧形成有突起416a和416b,这两个突起形成为向下的锥形的形状。每个锁定槽310的宽度w都小于左右锁定突起414a和414b的突起416a和416b之间的最大距离d1。另一方面,锁定部件410在其下端的宽度d2小于锁定槽310的宽度w。因此,锁定部件410能够容易地插入到锁定槽310中。
但是,当锁定部件410开始插入到锁定槽310中时,左右锁定突起414a和414b的突起416a和416b的上部被锁定槽310的上部挤压,如图11中所示,使得左右锁定突起414a和414b向内弯曲。结果,间隔槽412变窄,因此锁定部件410插入到锁定槽310中。
在锁定部件410插入锁定槽310之后,如图12所示,突起416a和416b利用弹性锁定部件410的回复力而将压力施加到锁定槽310的内表面,使得锁定部件和锁定槽之间的锁定力增加。而且,即使当有外力施加到锁定部件和锁定槽上时,通过形成为向下的锥形的突起416a和416b,防止了锁定部件410与锁定槽310脱离接合。而且,用于锁定部件410的材料的强度高于用于锁定槽310的材料。因此,突起416a和416b的部分切入相邻锁定槽310的壳体300中,且因此进一步增大了锁定部件和锁定槽之间的锁定力。
图13为根据本发明的另一优选实施例的电池包100a在组装之前的分解透视图。
如图13所示,电池包100a的特征在于,电池包100a包括在其上端和下端部分处开放的主体框架300a,以及与图7中的壳体300对应的下盖500,有多个锁定部件510形成在下盖500处,并且有多个锁定槽310形成在主体框架302处,使得下盖500的锁定部件510以及上盖400的锁定部件410能够接合在该锁定槽310内。
因此,除了下盖500与主体框架300a接合来构成图7中的壳体300以外,电池包100a与图7中的电池包100相同,因此没有给出对电池包100a的进一步的具体描述。
尽管出于示例目的公开了本发明的优选实施例,但是本领域技术人员在不脱离本发明范围和精神的情况下能够显而易见地得出如所附权利要求中所公开的、本发明的各种改变、附加和替代方案。
工业应用性
如上述说明书中所述的,能够制造出小厚度的电池包而不必使用超声波焊接方法,因此不需要使用价格高昂的精确超声波焊接机器。而且,能通过使用一般的挤压机器来形成锁定部件,且能够使用诸如SUS材料的高强度材料。因此,能生产出可抵抗外部冲击的具有高强度的电池,同时使电池的厚度显著减小。
Claims (3)
1.一种电池包,包括:具有电极组的矩形芯板,该芯板包括阴极、阳极、隔离膜以及以密封状态安装在该芯板中的电解液;具有用于容纳该芯板的内部空间的壳体;以及安装在该壳体上、用于密封所述芯板的上盖,所述壳体使所述芯板容纳于其中,其中,
上盖在其边缘处设置有多个弹性锁定部件,所述壳体在所述壳体的边缘处设置有多个锁定槽,该锁定槽对应于所述上盖的锁定部件,使得所述上盖的锁定部件插入到所述壳体的锁定槽中,而所述芯板被容纳在所述壳体中,从而所述上盖与所述壳体接合,
其中每个所述锁定部件都包括一对锁定突起,该对锁定突起彼此相连,同时在该对锁定突起之间形成有间隔槽,
该对锁定突起在其外侧上设置有形成为向下的锥形的突起,且
每个所述锁定槽的宽度都小于所述锁定突起中的所述形成为向下的锥形的突起之间的最大距离,
其中所述上盖由不锈钢制成,所述壳体由塑性材料制成,或者所述壳体只在所述壳体的形成有所述锁定槽的区域处由塑性树脂制成,由此插入到所述锁定槽中的所述锁定突起通过回复力切入与所述锁定槽相邻的壳体的内表面内,以进一步增加所述锁定部件和锁定槽之间的锁定力。
2.如权利要求1所述的电池包,其中所述壳体包括:
形成为与所述上盖相同形状的下盖,在该下盖的边缘处设置有多个锁定部件;和
具有多个锁定槽的矩形主体框架,该多个锁定槽对应于所述上和下盖的锁定部件。
3.如权利要求1所述的电池包,其中所述芯板为用于锂离子聚合物电池的芯板。
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KR10-2004-0104497 | 2004-12-10 | ||
KR1020040104497 | 2004-12-10 | ||
KR1020040104497A KR100857021B1 (ko) | 2004-12-10 | 2004-12-10 | 결착식 전지팩 |
PCT/KR2005/003753 WO2006062295A1 (en) | 2004-12-10 | 2005-11-08 | Locking-typed battery pack |
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CN101048890A CN101048890A (zh) | 2007-10-03 |
CN101048890B true CN101048890B (zh) | 2010-09-08 |
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EP (1) | EP1825542B1 (zh) |
JP (1) | JP4732462B2 (zh) |
KR (1) | KR100857021B1 (zh) |
CN (1) | CN101048890B (zh) |
BR (1) | BRPI0517029B8 (zh) |
CA (1) | CA2586642C (zh) |
RU (1) | RU2338302C1 (zh) |
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CA2586642A1 (en) | 2006-06-15 |
EP1825542A1 (en) | 2007-08-29 |
RU2338302C1 (ru) | 2008-11-10 |
WO2006062295A1 (en) | 2006-06-15 |
TW200635104A (en) | 2006-10-01 |
CA2586642C (en) | 2010-04-06 |
BRPI0517029B1 (pt) | 2018-05-22 |
TWI299921B (en) | 2008-08-11 |
US20060176014A1 (en) | 2006-08-10 |
CN101048890A (zh) | 2007-10-03 |
US7479758B2 (en) | 2009-01-20 |
KR100857021B1 (ko) | 2008-09-05 |
EP1825542B1 (en) | 2015-04-01 |
EP1825542A4 (en) | 2008-08-06 |
JP2008522361A (ja) | 2008-06-26 |
BRPI0517029B8 (pt) | 2023-01-10 |
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BRPI0517029A (pt) | 2008-09-30 |
KR20060065385A (ko) | 2006-06-14 |
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