CN105556318A - 电压感测组件和包括该电压感测组件的电池模块 - Google Patents

电压感测组件和包括该电压感测组件的电池模块 Download PDF

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CN105556318A
CN105556318A CN201480051639.0A CN201480051639A CN105556318A CN 105556318 A CN105556318 A CN 105556318A CN 201480051639 A CN201480051639 A CN 201480051639A CN 105556318 A CN105556318 A CN 105556318A
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battery
battery cell
pcb
voltage sensing
sensing assembly
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CN105556318B (zh
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文祯晤
姜达模
崔钟运
成准烨
孔炳五
严英燮
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Lg Energy Solution
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Abstract

本发明提供了一种电压感测组件，包括：感测汇流条，其连接到电池单体的串联连接部分以检测电压；PCB，其上部联接有感测汇流条，并且其下部联接有下方连接器；安装在PCB上的连接器；绝缘安装部件，其具有形状与PCB的形状相对应的容纳部，其中在容纳部的一个表面中限定了开口，感测汇流条从该开口穿过；绝缘片，其附接到PCB的前表面。

Description

电压感测组件和包括该电压感测组件的电池模块
技术领域
本发明涉及一种电压感测组件和一种包括该电压感测组件的电池模块。
背景技术
近年来，能够反复地充电和放电的二次电池已经广泛地用作无线移动装置的能量源。另外，作为用于已被开发用以解决由使用化石燃料的现有汽油和柴油车辆引起的问题诸如空气污染的电动车辆(EV)、混合动力电动车辆(HEV)和插电式混合动力电动车辆(Plug-inHEV)的电源，二次电池已经受到了相当大关注。
小型移动装置为每一个装置使用一个或者几个电池单体。另一方面，因为对于中型或者大型装置而言，高输出和大容量是必要的，所以中型或者大型装置诸如车辆使用具有电连接到彼此的多个电池单体的电池模块或者电池组。对于这种二次电池，多个电池单体可以彼此串联连接从而提供安装有该二次电池的设备或者装置所需要的输出和容量。
同时，锂二次电池呈现优良的电学性质；然而，锂二次电池具有低的安全性。例如，在锂二次电池的异常操作诸如过度充电、过度放电、暴露于高温和电气短路的情形中，会发生作为电池部件的活性材料和电解质的分解，结果产生了热和气体，并且由热和气体的产生引起的高温和高压状况加速了上述分解。最终，锂二次电池可能着火或者爆炸。
对于具有多单体结构的中型或者大型电池模块或者电池组而言，锂二次电池的安全性相关问题是更加严重的。因为在多单体电池模块或者电池组中使用多个电池单体，所以某些电池单体的异常操作会引起其它电池单体的异常操作，结果电池组可能着火或者爆炸，这可以导致大规模事故。
因此，传统的中型或者大型电池模块或者电池组设有用于测量电池单体的电压和温度的感测装置和用于基于测量值控制电池单体的电池管理系统(BMS)。
然而，包括这种安全系统的中型或者大型电池模块或者电池组存在如下问题，即，由于由安全系统在电池模块或者电池组中占据的空间增大，所以单位体积的电池容量减小。
发明内容
技术问题
已经实现了本发明以解决以上问题和尚待解决的其它技术问题。
具体地，本发明目的在于提供一种具有紧凑的结构的电压感测组件和一种包括该电压感测组件的电池模块。
技术方案
根据本发明的一个方面，能够通过提供如下的电压感测组件实现以上和其它目的，该电压感测组件安装到包括彼此串联连接的多个电池单体的电池模块以测量电池单体的电压，该电压感测组件包括：连接到电池单体的串联连接部分以感测电池单体的电压的感测汇流条；印刷电路板(PCB)，感测汇流条以等间隔布置的状态联接到印刷电路板的上部，并且连接器联接到刷电路板的下部；安装在PCB上的所述连接器，其用以将感测电压传输到电池管理系统(BMS)；包括接纳部的绝缘安装部件，该接纳部的形状对应于PCB的形状，以便PCB安装在该接纳部中，该接纳部的一侧设有开口，感测汇流条延伸通过该开口；和绝缘片，其具有与PCB的形状相对应的形状，该绝缘片设有形状对应于连接器的形状的开口，绝缘片附接到PCB的前表面。
即，根据本发明的电压感测组件包括：印刷电路板PCB，感测汇流条以等间隔布置的状态联接到印刷电路板PCB；和在其中接纳PCB的绝缘安装部件。因此，制造具有紧凑结构的电池模块或者电池组是可能的。
在具体实例中，感测汇流条可以使用表面安装技术(SMT)联接到PCB。在其中使用SMT的情形中，可以减小每一个感测汇流条的形状和尺寸以简化组装过程，并且减少组装时间。
感测汇流条可以通过焊接连接到电池单体的串联连接部分。因为感测汇流条通过焊接连接到电池单体的串联连接部分，所以即使当外部冲击被施加到电池模块时，在感测汇流条和电池单体之间的连接仍然得以维持，由此可以测量每一个电池单体的电压并且检查电池模块是否正常地操作。
焊接可以是激光焊接、点焊或者超声波焊接。
PCB可以形成为具有板形状。具体地，PCB可以构造为使得PCB的上端的长度等于电池模块的宽度，并且使得PCB的下端的长度等于PCB的上端的长度的60％到80％。
绝缘安装部件可以在在构成电池模块的各电池单体的一侧处与电池单体的电极端子紧密接触的状态下安装到电池模块，同时PCB被接纳在绝缘安装部件中。因此，无需用于将电压感测组件安装到电池模块的任何额外空间，由此可以制成具有紧凑结构的电池模块。
根据本发明的另一方面，提供了一种电池模块，包括：具有上述构造的电压感测组件；包括顺序地堆叠的多个电池单体的电池单体堆叠体；安装到电池单体堆叠体的最外侧的一对端板；连接到电池单体堆叠体的最外电池单体的电极端子的外部输入输出端子；和安装到电池单体堆叠体的一个表面的BMS。
例如，每一个电池单体可以构造为具有如下结构，其中电极组件安装在由包括金属层和树脂层的层压片制成的电池外壳中，并且电池外壳的外边缘被密封。
另外，每一个电池单体可以安装在构造为具有框架结构的电池套管中。具体地，套管可以包括一对板形框架，该板形框架构造为在电池单体中相应一个的至少一个侧表面敞开的状态下固定该电池单体的外边缘。
电池单体不受特别限制，只要当使用该电池单体构造电池模块或者电池组时，电池单体能够提供高电压和高电流。例如，每一个电池单体可以是锂二次电池。
根据本发明的另一个方面，提供一种包括带有上述构造的一个或者多个电池模块的电池组。
根据本发明进一步的方面，提供一种包括该电池组作为电源的装置。具体地，该装置可以选自由移动电话、便携式计算机、智能电话、智能平板、上网本计算机、轻型电动车(LEV)、电动车辆、混合动力电动车辆、插电式混合动力电动车辆和电力存储设备组成的组。
该装置的结构和制造方法在本发明所属技术领域中是众所周知的，并且因此将省略其详细说明。
附图说明
与附图相结合，根据以下详细说明，将更加清楚地理解本发明的以上和其它目的、特征和其它优点，其中：
图1是示出根据本发明实施例的电压感测组件的透视图；
图2是图1所示电压感测组件的分解图；并且
图3是示出根据本发明实施例的电池模块的透视图。
具体实施方式
现在，将参考附图详细描述本发明的示例性实施例。然而，应该指出，本发明的范围不受所例示实施例限制。
图1是示出根据本发明实施例的电压感测组件的透视图，图2是图1所示电压感测组件的分解图。
参考图1和2，电压感测组件100包括感测汇流条110、印刷电路板(PCB)120、连接器130、绝缘安装部件140和绝缘片150。
感测汇流条110以等间隔布置的状态联接到PCB120的上部，并且连接器130联接到PCB120的下部。感测汇流条110使用表面安装技术联接到PCB120，由此简化组装过程。
绝缘安装部件140包括具有与PCB120的形状相对应的形状的接纳部141，并且侧壁141沿着接纳部141的外边缘以突出方式形成。另外，接纳部141的一侧设有开口(未示出)，每一个开口的尺寸对应于感测汇流条中相应一个的尺寸，并且开口的布置间隔对应于感测汇流条的布置间隔。
在PCB120被接纳在绝缘安装部件140中的状态中，绝缘片150附接到PCB120的暴露表面。绝缘片150设有开口(未示出)，该开口的形状对应于连接器130的形状。因此，绝缘片150使PCB120的整体除了连接器130之外相对于外部绝缘。
图3是示出根据本发明实施例的电池模块的透视图。
参考图3并结合图1和2，电池模块200包括电压感测组件100、电池单体堆叠体220、一对端板230、外部输入输出端子240和电池管理系统(BMS)(未示出)。
在电压感测组件100在电池单体堆叠体220的一侧与电池单体堆叠体220的电极端子221紧密接触的状态下，电压感测组件100安装到电池模块200。
电压感测组件100的上端的长度L1等于电池模块200的宽度L3，并且电压感测组件100的下端的长度L2等于电压感测组件100的上端的长度L1的70％，从而电压感测组件100的下端不能接触安装到相应端板230的紧固突起231。
电压感测组件100的感测汇流条110通过焊接连接到电池单体堆叠体220的电极端子221。
虽然已经为了示意性目的公开了本发明示例性实施例，但是本领域技术人员将理解，在不偏离如在所附权利要求所公开的本发明范围和精神的情况下，可以进行各种修改、添加和替代。
工业实用性
如根据以上说明清楚地，根据本发明的电压感测组件包括：印刷电路板(PCB)，感测汇流条在以等间隔布置的状态下联接到该印刷电路板(PCB)；和在其中接纳PCB的绝缘安装部件。因此，可以制造具有紧凑结构的电池模块或者电池组。

Claims (14)

1.一种电压感测组件，所述电压感测组件安装到包括彼此串联连接的多个电池单体的电池模块，以测量所述电池单体的电压，所述电压感测组件包括：
感测汇流条，所述感测汇流条连接到所述电池单体的串联连接部分，以感测电池单体的电压；
印刷电路板(PCB)，在所述感测汇流条以等间隔布置的状态下，所述感测汇流条联接到所述印刷电路板的上部，并且连接器联接到所述印刷电路板的下部；
所述连接器，所述连接器安装在所述PCB上，用于将所感测的电压传输到电池管理系统(BMS)；
绝缘安装部件，所述绝缘安装部件包括具有与所述PCB的形状相对应的形状的接纳部，以便所述PCB安装在所述接纳部中，所述接纳部的一侧设有开口，所述感测汇流条延伸通过所述开口；和
绝缘片，所述绝缘片具有与所述PCB的形状相对应的形状，所述绝缘片设有开口，所述开口具有与所述连接器的形状相对应的形状，所述绝缘片附接到所述PCB的前表面。
2.根据权利要求1所述的电压感测组件，其中，所述感测汇流条使用表面安装技术(SMT)联接到所述PCB。
3.根据权利要求1所述的电压感测组件，其中，所述感测汇流条通过焊接连接到所述电池单体的所述串联连接部分。
4.根据权利要求1所述的电压感测组件，其中，所述PCB形成为具有板形状，并且所述电压感测组件构造为使得所述电压感测组件的上端的长度等于所述电池模块的宽度。
5.根据权利要求4所述的电压感测组件，其中，所述电压感测组件构造为使得所述电压感测组件的下端的长度等于所述电压感测组件的上端的长度的60％到80％。
6.根据权利要求1所述的电压感测组件，其中，在所述绝缘安装部件在每个电池单体的一侧处与所述电池单体的电极端子紧密接触的状态下，所述绝缘安装部件被安装到所述电池模块。
7.一种电池模块，包括：
根据权利要求1到6中的任一项所述的电压感测组件；
电池单体堆叠体，所述电池单体堆叠体包括被顺序地堆叠的多个电池单体；
一对端板，所述一对端板安装到所述电池单体堆叠体的最外侧；
外部输入输出端子，所述外部输入输出端子连接到所述电池单体堆叠体的最外电池单体的电极端子；和
BMS，所述BMS安装到所述电池单体堆叠体的一个表面。
8.根据权利要求7所述的电池模块，其中，每一个所述电池单体构造为具有如下结构，即：其中电极组件安装在由包括金属层和树脂层的层压片制成的电池外壳中，并且所述电池外壳的外边缘被密封。
9.根据权利要求7所述的电池模块，其中，每一个所述电池单体安装在构造为具有框架结构的电池套管中。
10.根据权利要求9所述的电池模块，其中，所述套管包括一对板形框架，所述板形框架构造为在电池单体中相应一个的至少一个侧表面敞开的状态下固定该电池单体的外边缘。
11.根据权利要求7所述的电池模块，其中，每一个所述电池单体是锂二次电池。
12.一种电池组，包括一个或者多个根据权利要求7所述的电池模块。
13.一种包括作为电源的根据权利要求12所述的电池组的装置。
14.根据权利要求13所述的装置，其中，所述装置选自：移动电话、便携式计算机、智能电话、智能平板、上网本计算机、轻型电动车(LEV)、电动车辆、混合动力电动车辆、插电式混合动力电动车辆和电力存储设备。
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