CN111092251A - 袋型电池单元 - Google Patents

袋型电池单元 Download PDF

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CN111092251A
CN111092251A CN201910153137.3A CN201910153137A CN111092251A CN 111092251 A CN111092251 A CN 111092251A CN 201910153137 A CN201910153137 A CN 201910153137A CN 111092251 A CN111092251 A CN 111092251A
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negative electrode
battery cell
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positive electrode
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李尚俊
李允智
安胜浩
金东熺
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Hyundai Motor Co
Kia Corp
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Kia Motors Corp
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Abstract

本发明提供一种袋型电池单元。电池单元包括负电极和正电极，负电极和正电极在彼此间隔开的同时彼此重叠。负电极包括从负电极的相反两端的第一侧突出的一对负极端子。附加地，正电极包括从正电极的相反两端的第二侧突出的一对正极端子。

Description

袋型电池单元
技术领域
本发明涉及一种袋型电池单元，其防止随着其长度增加而出现的输出减少。
背景技术
袋型电池单元包括：正电极、负电极、隔板和电解质。多个袋型电池单元彼此连接以形成电池单元。近来，袋型电池单元的形状在减小宽度的方向上发生改变，以便在延长的同时更容易地安装在车辆上，从而将能量密度最大化。然而，当袋型电池单元的长度增加时，电子的移动距离增加，并且因此，袋型电池单元的输出可能减少。
发明内容
本发明的一方面是提供一种袋型电池单元，其可以在增加其长度的同时防止输出减少。本发明的其他方面将部分地在下面的描述中阐述，并且部分地通过所述描述而变得明显，或者可以从本发明的实践中学习到。
根据本发明的一方面，袋型电池单元可以包括负电极和正电极，负电极和正电极在彼此间隔开的同时彼此重叠。负电极可以包括从负电极的相反两端的第一侧突出的一对负极端子，并且正电极可以包括从正电极的相反两端的第二侧突出的一对正极端子。
袋型电池单元可以进一步包括：负极极耳，其具有连接到负极端子的第一端和朝向正极端子延伸的第二端；以及正极极耳，其具有连接到正极端子的第一端和朝向负极端子延伸的第二端。正极极耳与负极端子的第二端以及负极极耳与正极端子的第二端可以分别由绝缘体绝缘。
附加地，负电极可以包括板状负电极部，并且正电极可以包括板状正电极部。袋型电池单元可以进一步包括：隔板，其设置在负电极部和正电极部之间，以使负电极部和正电极部在彼此间隔开的同时彼此重叠。
进一步地，袋型电池单元可以包括用于容纳一对正极端子和一对负极端子的袋。袋可以包括：用于容纳彼此重叠的正电极部和负电极部的电极容纳部；设置在袋的相反两端的第一侧以容纳一对负极端子的一对负极端子容纳部；以及设置在袋的相反两端的第二侧以容纳一对正极端子的一对正极端子容纳部。负极极耳可以穿过负极端子容纳部向外突出，并且正极极耳可以穿过正极端子容纳部向外突出。
附图说明
结合附图，根据以下示例性实施例的描述，本发明公开的这些和/或其他方面将变得明显且更容易理解：
图1是示出根据本发明示例性实施例的袋型电池单元的内部结构的示意图；
图2是示出根据本发明示例性实施例的袋型电池单元中的端子和极耳的安装状态的截面图；以及
图3至图8是依次示出根据本发明示例性实施例的袋型电池单元的制造过程的示意图。
具体实施方式
可以理解的是，本文使用的术语“车辆”或“车辆的”或其它相似的术语一般包括机动车辆，例如包括运动型多功能车辆(SUV)、公共汽车的客车、卡车、各种商用车辆；包括各种艇、船只的船舶、航空器等，并包括混合动力车辆、电动车辆、燃料车辆、插电式混合动力电动车辆、氢动力车辆和其他替代燃料车辆(例如，来自非石油资源的燃料)。
在此使用的术语仅用于说明特定实施例，而非旨在限制本发明。如在本文使用的，单数形式“一个”、“一种”和“该”也旨在包括复数形式，除非上下文明确指示。要进一步理解的是，当在本说明书中使用“包括”和/或“包含”时，是指陈述的特征、整数、步骤、操作、元件和/或部件的存在，但不排除一个或多个其它特征、整数、步骤、操作、元件、部件和/或其组合的存在或添加。如在本文使用的，词语“和/或”包括一个或多个相关所列项目的任何和全部的组合。
除非特别说明或从上下文明显看出，此处所用的词语“约”理解为在本领域的正常容差范围内，比如在平均值的两个标准偏差内。“约”可以理解为规定数值的10％、9％、8％、7％、6％、5％、4％、3％、2％、1％、0.5％、0.1％、0.05％或0.01％之内。除非上下文明确指示，否则此处的所有数值均可由词语“约”修饰。
这里描述的实施例和附图中示出的配置仅是本发明的示例性实施例的示例，并且在提交本发明时可以进行各种修改以替换本说明书的实施例和附图。
本申请的各个附图中的相同附图标记或名称表示执行基本相同功能的部件或组件。这里使用的术语是为了描述示例性实施例，而不是为了限制和/或限制本发明。在本说明书中，词语“前”、“后”、“上”、“下”、“左”和“右”是参照附图定义的，并且各部件的形状和位置不受这些词语的限制。
在下文中，将参照附图详细描述根据本发明的示例性实施例。如图1所示，根据本发明的一方面的袋型电池单元可以包括：交替堆叠的负电极10和正电极20；设置在负电极10和正电极20之间以使负电极10和正电极20彼此分离的隔板30；以及用于容纳负电极10、正电极20、隔板30和电解质的袋40。
特别地，负电极10可以包括：形成为矩形平板状的负电极部11、以及从负电极部11的相反两端的第一侧突出的一对负极端子12。正电极20可以包括：形成为矩形平板状的正电极部21、以及从正电极部21的相反两端的第二侧突出的一对正极端子22。
隔板30可以设置在负电极10和正电极20之间，以使负电极10和正电极20彼此重叠。隔板30可以形成为矩形板状，并且可以设置在负电极部11和正电极部21之间。因此，当负电极10和正电极20堆叠以彼此重叠时，负极端子12可以位于袋型电池单元的相反两端的第一侧，并且正极端子22可以位于袋型电池单元的相反两端的第二侧。
如上所述，当负极端子12分别从负电极部11的相反两端突出，并且正极端子22分别从正电极部21的相反两端突出时，电子可以分散并移动到两个位置，并因此电阻减小。此外，电子可以移动通过两个负极端子12中较近的一个以减小电子的行进路径，并且因此即使当袋型电池单元的长度增加时，也可以防止由此导致的输出减少。
此外，袋型电池单元可以包括：连接到负极端子12以使电子传输到袋型电池单元外部的负极极耳13；以及连接到正极端子22以使电子从外部传输到袋型电池单元内部的正极极耳23。负极极耳13的第一端可以通过超声波焊接连接到负极端子12，并且负极极耳13的第二端可以朝向正极端子22延伸并且与正极端子22重叠，同时彼此间隔开。
正极极耳23的第一端可以通过超声波焊接连接到正极端子22，并且正极极耳23的第二端可以朝向负极端子12延伸并且与负极端子重叠，同时彼此间隔开。正极端子22与负极极耳13的第二端以及负极端子12与正极极耳23的第二端可以分别通过绝缘体绝缘。绝缘体可以形成为单独的构件，并且稍后将描述的袋40的电极容纳部41可以用作绝缘体。
此外，袋40可以包括：电极容纳部41，其用于容纳彼此重叠且同时通过隔板30彼此间隔开的正电极部21和负电极部11；负极端子容纳部42，其设置在电极容纳部41的相反两端的第一侧以容纳负极端子12；以及正极端子容纳部43，其设置在电极容纳部41的相反两端的第二侧以容纳正极端子22。
负极极耳13可以突出以穿过负极端子容纳部42并与正极端子容纳部43重叠。负极极耳13的第二端和正极端子22可以彼此绝缘，同时通过正极端子容纳部43彼此间隔开。正极极耳23可以突出以穿过正极端子容纳部43并与负极端子容纳部42重叠。正极极耳23的第二端和负极端子12可以彼此绝缘，同时通过负极端子容纳部42彼此间隔开。
在下文中，将参照附图描述如上所述构造的袋型电池单元的制造。
首先，如图3和图4所示，负电极10和正电极20可以彼此重叠，并且负电极部11和正电极部21可以彼此重叠，同时通过隔板彼此间隔开。接下来，如图6所示，负极极耳13可以通过超声波焊接固定到负极端子12，并且如图7所示，正极极耳23可以通过超声波焊接固定到正极端子22。然而，本发明不限于超声波焊接，并且可以使用其他类型的紧固方法将部件固定在一起。
最后，如图8所示，可以通过使彼此重叠的负电极10和正电极20容纳在袋40中来完成袋型电池单元的制造。这里，负极极耳13可以安装成穿过负极端子容纳部42向外突出，并且正极极耳23可以安装成穿过正极端子容纳部43向外突出。
如从上面显而易见的，由于负极端子可以设置在负电极的相反两端，并且正极端子可以设置在正电极的相反两端，所以根据本发明的方面的袋型电池单元可以防止当负电极部和正电极部的长度增加时可能出现的输出减少。
尽管已经示出和描述了本发明的一些示例性实施例，但是本领域技术人员将理解，在不脱离由权利要求及其等同物限定的本发明的原理和精神的情况下，可以对这些示例性实施例进行改变。

Claims (8)

1.一种袋型电池单元，包括：
负电极和正电极，所述负电极和所述正电极在彼此间隔开的同时彼此重叠，
其中，所述负电极包括从所述负电极的相反两端的第一侧突出的一对负极端子，并且
其中，所述正电极包括从所述正电极的相反两端的第二侧突出的一对正极端子。
2.根据权利要求1所述的袋型电池单元，还包括：
负极极耳，具有连接到所述负极端子的第一端和朝向所述正极端子延伸的第二端；和
正极极耳，具有连接到所述正极端子的第一端和朝向所述负极端子延伸的第二端。
3.根据权利要求2所述的袋型电池单元，其中，所述正极极耳与所述负极端子的第二端以及所述负极极耳与所述正极端子的第二端分别通过绝缘体绝缘。
4.根据权利要求1所述的袋型电池单元，其中，所述负电极包括板状负电极部，并且所述正电极包括板状正电极部。
5.根据权利要求1所述的袋型电池单元，其中，所述袋型电池单元还包括：
隔板，设置在所述负电极部和所述正电极部之间，以使所述负电极部和所述正电极部在彼此间隔开的同时彼此重叠。
6.根据权利要求2所述的袋型电池单元，还包括：
袋，用于在内部容纳所述一对正极端子和所述一对负极端子。
7.根据权利要求6所述的袋型电池单元，其中，所述袋包括：
电极容纳部，用于容纳彼此重叠的正电极部和负电极部；
一对负极端子容纳部，设置在所述袋的相反两端的第一侧以容纳所述一对负极端子；以及
一对正极端子容纳部，设置在所述袋的相反两端的第二侧以容纳所述一对正极端子。
8.根据权利要求7所述的袋型电池单元，其中，所述负极极耳穿过所述负极端子容纳部向外突出，并且所述正极极耳穿过所述正极端子容纳部向外突出。
CN201910153137.3A 2018-10-24 2019-02-28 袋型电池单元 Pending CN111092251A (zh)

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