CN101053109A - 用于测量电池组中的电池电压和温度的部件 - Google Patents

用于测量电池组中的电池电压和温度的部件 Download PDF

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CN101053109A
CN101053109A CNA2005800310026A CN200580031002A CN101053109A CN 101053109 A CN101053109 A CN 101053109A CN A2005800310026 A CNA2005800310026 A CN A2005800310026A CN 200580031002 A CN200580031002 A CN 200580031002A CN 101053109 A CN101053109 A CN 101053109A
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禹孝相
朴正民
安宰成
郑道阳
南宫檍
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LG Energy Solution Ltd
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Abstract

一种在电池组中测量电池电压和温度的部件包括：温度测量元件(a)，附着于单元电池的表面；以及印刷电路板(b)，具有：在其上端形成的凸起，以便于该凸起连接到用于与单元电池的电极引线相连接的电极引线连接部件；在其下部形成的连接部分，用于使温度测量元件安装到该印刷电路板上；以及电路，用于单元电池进行电压测量的电流和用于温度测量元件进行温度测量的电流通过其流动。

Description

用于测量电池组中的电池电压和温度的部件
技术领域
本发明涉及一种用于测量电池组中的电池电压和温度的部件，更具体地说，本发明涉及一种用于在高输出、大容量电池组中测量电池电压和温度的部件，该电池组具有互相电连接的多个单元电池，所述电压和温度测量部件安装到电引线连接部件上，该电极引线连接部件将单元电池的电极引线互相连接，用于同时测量单元电池的电压和温度。
背景技术
最近，可以充电和放电的蓄电池广泛用作无线移动设备的电源。此外，作为电动汽车和混合动力电动汽车的电源，蓄电池受到显著关注，开发这种汽车是为了解决诸如使用矿物燃料的现有汽油和柴油动力汽车所产生的空气污染的问题。
小型移动设备使用一个或者多个电池，例如，对于每个设备使用3个或者4个单元电池。相反，诸如车辆的中型或者大型设备使用包括有多个互相电连接的单元电池的电池组，因为这种中型或者大型设备需要高输出、大容量电池。
通常，互相串联或者并联连接的多个单元电池安装在电池盒中，然后，使多个这种电池盒互相并联，从而制造电池组。
图1是示出有4个单元电池安装在其内的电池盒的典型结构的透视图。
参考图1，电池盒100包括一对互相联结的框架102和104。在将框架102和104互相分离的同时将单元电池200设置于框架102和104的电池隔板110上，并且在将框架102和104互相联结后，确保将单元电池200固定在框架102和104的电池隔板110上。单元电池200具有电极引线，通过位于该电池盒100的上部的母线120，该电极引线电连接到相邻单元电池201的电极引线。如图1所示，单元电池200和201互相串联连接，但是单元电池也可以互相并联连接。各单元电池电连接到分别从电池盒100的上端两侧凸出的阴极接线端130和阳极接线端140。
用于测量在具有两个或者两个以上互相堆叠而且互相电连接的电池盒200的电池组内的单元电池200和201的电压和温度的现有方法包括步骤：通过导线将附加电压测量设备安装到电极引线连接部件上，以测量电池电压；以及将热电偶附着于电池表面或者电池表面的附近，并且，通过导线将该热电偶连接于外部测量设备，以测量电池温度。因此，该电池组需要外部连线部件，诸如用于连接电压与温度测量设备的上述导线，因此，电池组的结构更加复杂。复杂连线导致难以组装电池组，是问题的主要原因。通过设置印刷电路板，可以简化这种复杂连线。
第2002-39356号韩国未审专利公开描述了一种用于高输出、大容量电池组的印刷电路板的示例，在该专利公开中，印刷电路板用作单元电池的连接部件。该公开描述的该发明提供了一种将该印刷电路板直接连接到单元电池的方法，该印刷电路板包括：用于对其内安装的单元电池进行串联或者并联地连接所需的电路；以及电压测量专用连接插座，其用于与电压测量设备相连接。
然而，如上所述，在该印刷电路板直接用作单元电池的电连接部件时，即使该印刷电路板的一部分被损坏时，整个电池组也可能发生短路。此外，印刷电路板与单元电池之间的连接降低了耐用性。此外，所公开的发明存在的问题是，如上所述通过附加外部导线测量电池组内的电池温度。
发明内容
因此，本发明涉及一种在电池组内测量电池电压和温度的部件，它基本上克服了上述的现有技术问题以及目前所需要解决的技术问题。即，本发明的目的是提供一种印刷电路板，它可以方便地连接到电池组内各单元电池的电连接部件，以便同时测量电池电压和温度，而无需设置附加导线。
本发明人进行了各种试验和研究，而且已经新开发了一种测量部件，它可以安装到电池组中各单元电池的附加连接部件(而非各单元电池的电连接部件)，可以使用该测量部件而无须考虑各种连接部件来，而且它同时进行电压测量和温度测量，而无需设置附加导线。
根据本发明，通过设置用于测量电池组内的电池电压和温度的部件，可以实现上述以及其他目的，该部件包括：温度测量元件(a)，附着于单元电池的表面；以及印刷电路板(b)，该印刷电路板(b)具有：在其上端形成的凸起，以便于该凸起连接到用于与单元电池的电极引线相连接的电极引线连接部件；在其下部形成的连接部分，用于使温度测量元件安装在印刷电路板上；以及电路，用于单元电池进行电压测量的电流和用于温度测量元件进行温度测量的电流通过其流动。
因此，根据本发明的电压与温度测量部件具有温度测量元件安装到以特定形状形成的印刷电路板上的结构。通过将电压与温度测量部件安装在电极导线连接部件上，可以轻而易举地实现电压与温度测量部件的安装，以使得温度测量元件设置于电池组的单元电池上。因此，根据本发明的电压与温度测量部件不需要外部连线部件，例如，用于电压与温度测量部件的导线，而且在电压与温度测量部件被损坏时，可以容易并便捷地以新电压与温度测量部件替换被损坏的电压与温度测量部件，而不使电池组发生短路，而且可以减小因为电压与温度测量部件与电极引线之间直接连接所产生的接触电阻。
每个温度测量元件(a)优选均是热敏电阻，其电阻根据温度发生变化。
可以以各种方式，将印刷电路板(b)的凸起固定于电极引线连接部件。优选通过焊接，将该凸起固定于电极引线连接部件。温度测量元件(a)可以以各种方式固定于印刷电路板(b)。优选地，印刷电路板(b的每个连接部分具有通孔，通过该通孔，插入每个温度测量元件(a)的两个连接脚，在每个温度测量元件(a)的连接脚分别插入该通孔内的情况下，通过焊接，将每个温度测量元件的连接脚固定于该印刷电路板。
该印刷电路板的一端设置了连接器，该连接器与在其上安装了电压测量设备和温度测量设备的电池管理系统(BMS)相连接。
没有特别限制用于与印刷电路板(b)的凸起相连接的电极引线连接部件。该电极引线连接部件优选是母线。
附图说明
根据下面结合附图所做的详细说明，本发明的上述以及其他目的、特征和优点更加容易理解，其中：
图1是示出有4个单元电池安装在其内的电池盒的透视图；
图2是示出安装到母线上的根据本发明优选实施例的电压与温度测量部件的典型示意图；以及
图3是图2的透视图。
主要附图标记说明
100：电池组盒
120、121、122、123：母线
200、201、202、203：单元电池
210、211、212、213：阴极引线
220、221、222、223：阳极接线端
300：电压与温度测量部件
310：热敏电阻
320：印刷电路板
具体实施方式
现在，参考附图详细说明本发明的优选实施例。然而，应该注意，本发明的范围并不局限于所示的实施例。
图2是示出安装到母线121、122和123上的根据本发明优选实施例的电压与温度测量部件300的典型示意图，而图3是图2的透视图。安装到母线121、122和123上的电压与温度测量部件300可靠固定于图1所示电池盒框架，以构造电池组。为了清楚地理解问题，图2和3中没有示出盒框架。
参考图2和3，4个单元电池200、201、202和203具有电极引线，通过母线121、122和123相应之一，每个电极引线分别连接到相邻单元电池的电极引线。例如，单元电池201的阴极接线端211连接到单元电池200的阳极接线端220，而阳极接线端221通过母线122连接到单元电池202的阴极接线端212。
单元电池200、201、202和203是可以充电和放电的电池。各种电池可以用作该单元电池。以高密度累积电量的方形电池或者盒式电池(pouch-shaped cell)优选用作该单元电池。盒式电池更优选用作该单元电池。
每个单元电池分别具有以密封方式容纳在电池外壳内的阴极、阳极、分离膜以及电解液。包括位于薄膜式阴极和阳极之间的极小多孔分离膜的电池组件可以是缠绕地，或者阴极/分离膜/阳极这种结构的全电池(fullcell)或者双电池(bicell)可以是彼此顺序地堆叠的。不特别限制用于阴极和阳极的活性材料。优选地，阴极活性材料由具有高安全性的锂锰基氧化物组成，而阳极活性材料由碳组成。最优选的单元电池是锂离子电池或者锂离子聚合体电池。
重新参考图2和3，根据本发明的测量部件300包括：热敏电阻310，用作温度测量元件；以及印刷电路板320。
每个热敏电阻310分别包括：感测体312，附着于要测量的蓄电池201；以及一对连接脚314，其从该感测体312延伸。连接脚314由薄导线制成。感测体312附着于蓄电池201的表面，而连接脚314连接到印刷电路板320。经由连接脚314对感测体312施加电流，该感测体312的电阻根据温度而变化，并且，根据电阻而变化的该电流作为电信号被传输到印刷电路板320。
印刷电路板320由薄铜片制成。该印刷电路板具有多个形成在其上端的凸起322，以使各凸起322分别连接到母线121、122和123。通过进行焊接将导电的凸起322固定在母线121、122和123上，以将流过母线121、122和123的电流传输到凸起322。在印刷电路板320的下部，形成多个通孔324，热敏电阻310的连接脚314可以插入该通孔。在通过该通孔324将热敏电阻310的连接脚314插入的同时，通过焊接将连接脚314固定在印刷电路板320上。
在该印刷电路板印制电路326，通过凸起322，电流从母线120传输至该电路326，而通过通孔324，电流从热敏电阻310传输至该电路326。
在与电路326相连的印刷电路板320的一端安装连接器328，该连接器328连接电池管理系统(BMS)(未示出)，在该电池管理系统上，安装电压测量设备和温度测量设备。
尽管为了示例目的公开了本发明的优选实施例，但是本技术领域内的技术人员明白，在不脱离所附权利要求公开的本发明的精神和范围的情况下，可以进行各种修改、附加和替换。
工业应用
从上面的描述可以看出，根据本发明的电池电压与温度测量部件可以方便地连接到电极引线连接部件，该电极引线连接部件连接了与用于构成电池组的电池盒相连的单元电池的电极引线，以测量电池电压。此外，无须设置附加外部导线，而通过直接连接到印刷电路板的温度测量元件可以精确测量电池温度。在印刷电路板被损坏时，损坏的印刷电路板不影响电极引线连接部件。因此，可以方便地替换该印刷电路板，而不使电池组发生短路。

Claims (6)

1.一种在电池组中测量电池电压和温度的部件，该部件包括：
温度测量元件(a)，其附着于单元电池的表面；以及
印刷电路板(b)，其具有：在其上端形成的凸起，以便于该凸起连接到用于与单元电池的电极引线相连接的电极引线连接部件；在其下部形成的连接部分，用于使温度测量元件安装到该印刷电路板上；以及电路，用于单元电池进行电压测量的电流和用于温度测量元件进行温度测量的电流通过其流动。
2.根据权利要求1所述的部件，其中每个温度测量元件均是热敏电阻，其电阻根据温度发生变化。
3.根据权利要求1所述的部件，其中通过焊接，将该凸起固定于电极引线连接部件。
4.根据权利要求1所述的部件，其中每个连接部分分别具有通孔，通过该通孔，插入每个温度测量元件的两个连接脚，在每个温度测量元件的连接脚分别插入该通孔内的情况下，通过焊接，将每个温度测量元件的连接脚分别固定于印刷电路板。
5.根据权利要求1所述的部件，其中该印刷电路板的一端具有连接器，该连接器与在其上安装了电压测量设备和温度测量设备的电池管理系统(BMS)相连接。
6.根据权利要求1所述的部件，其中与凸起连接的电极引线连接部件是母线。
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