CN110521045A - 电极组件和包括该电极组件的电池 - Google Patents
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 229910003307 Ni-Cd Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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Abstract
本发明涉及一种电极组件,该电极组件包括:正极,在该正极上形成通过以预定间隔图案涂覆正极活性材料而形成的多个正极图案,并且包括未涂覆所述正极活性材料的正极未涂覆部分;负极,在该负极上形成通过以预定间隔图案涂覆负极活性材料而形成的多个负极图案,并且包括未涂覆所述负极活性材料的负极未涂覆部分;以及隔膜,该隔膜设置在正极和负极之间,并且所述电极组件通过弯曲所述正极未涂覆区域和所述负极未涂覆区域以Z字形形成。
Description
技术领域
相关申请的交叉引用
本申请要求于2017年12月1日向韩国知识产权局提交的韩国专利申请No.10-2017-0164358的优先权和权益,其全部内容通过引用结合于此。
本发明涉及电池领域,更具体地,涉及一种电极组件和包括该电极组件的电池。
背景技术
最近,人们对能量存储技术越来越感兴趣。最重要的是,开发能够容易充电/放电的可充电电池已成为人们关注的焦点。可再充电电池作为一种新能源而备受关注,其主要优点在于,因为可以减少化石燃料的使用,从而提高环保特性和能源效率,并且根本不产生由使用能量产生的副产物。
在现在广泛使用的可充电电池中,锂离子电池由于具有比诸如使用电解质水溶液的Ni-MH、Ni-Cd和硫酸铅电池的现有技术中的可充电电池更高的工作电压和更高的能量密度的优点而在各个领域备受关注。
随着诸如移动电话或膝上型计算机的便携式电子设备的发展,对作为其能源的可再充电电池的需求急剧增加。近年来,已经实现了可再充电电池作为混合动力电动车辆(HEV)和电动车辆(EV)的动力源的使用。因此,已经对能够满足各种需求,特别是,正在增加的对具有高能量密度、高放电电压和高输出的锂可再充电电池需求的可再充电电池进行了大量研究。
现有技术中的电池通过层叠或简单堆叠工艺交替堆叠电极和隔膜来制造。然而,该工艺直接影响能量密度,并且因此,隔膜和电极的尺寸之间可能只有很小的差异。
因此,当发生电池隔膜的热收缩、折叠、端撕裂等时,负极和正极可能短路而引起火灾等。
发明内容
技术问题
本发明致力于提供一种电极组件和包括该电极组件的电池,其具有即使隔膜收缩也能防止短路的优点。
技术方案
本发明的示例性实施方式提供了一种电极组件,该电极组件包括:正极,该正极具有通过以预定间隔用正极活性材料进行图案涂覆而形成的多个正极图案,并且包括未涂覆所述正极活性材料的正极未涂覆区域;负极,该负极具有通过以预定间隔用负极活性材料进行图案涂覆而形成的多个负极图案,并且包括未涂覆所述负极活性材料的负极未涂覆区域;以及隔膜,该隔膜设置在所述正极和所述负极之间,其中,所述电极组件通过弯曲所述正极未涂覆区域和所述负极未涂覆区域以Z字形形成。
此外,在所述电极组件中,可以依次堆叠所述正极、所述隔膜和所述负极,并且可以通过弯曲所述正极未涂覆区域和所述负极未涂覆区域而以Z字形形成所述电极组件。
此外,第一电极接头可以与所述正极未涂覆区域联接,并且第二电极接头可以与所述负极未涂覆区域联接。
此外,所述正极可以被堆叠在所述隔膜的上表面上,并且所述负极可以被堆叠在所述隔膜的下表面上。
此外,所述第一电极接头和所述第二电极接头可以被设置在彼此相对的两侧。
本发明的另一示例性实施方式,提供了一种电池,该电池包括多个电芯,其中,所述多个电芯中的每一个包括电池组件,所述电池组件包括:正极,该正极具有通过以预定间隔用正极活性材料进行图案涂覆而形成的多个正极图案,并且包括未涂覆所述正极活性材料的正极未涂覆区域;负极,该负极具有通过以预定间隔用负极活性材料进行图案涂覆而形成的多个负极图案,并且包括未涂覆所述负极活性材料的负极未涂覆区域;以及隔膜,该隔膜设置在所述正极和所述负极之间,其中,所述电极组件通过弯曲所述正极未涂覆区域和所述负极未涂覆区域以Z字形形成。
此外,在所述电极组件中,可以依次堆叠所述正极、所述隔膜和所述负极,并且可以通过弯曲所述正极未涂覆区域和所述负极未涂覆区域而以Z字形形成所述电极组件。
此外,第一电极接头可以与所述正极未涂覆区域联接,并且第二电极接头可以与所述负极未涂覆区域联接。
此外,所述正极可以被堆叠在所述隔膜的上表面上,并且所述负极可以被堆叠在所述隔膜的下表面上。
此外,所述第一电极接头和所述第二电极接头可以被设置在彼此相对的两侧。
有益效果
根据本发明的示例性实施方式,提供了一种即使隔膜收缩也能够防止短路的电极组件和包括该电极组件的电池。
附图说明
图1是示出根据本发明的示例性实施方式的正极的视图。
图2是示出根据本发明的示例性实施方式的负极的视图。
图3是示出根据本发明的示例性实施方式的电极组件的折叠结构的视图。
具体实施方式
图1是示出根据本发明的示例性实施方式的正极的视图。
图2是示出根据本发明的示例性实施方式的负极的视图。
图3是示出根据本发明的示例性实施方式的电极组件的折叠结构的视图。
在下文中,将参照图1至图3描述根据本发明的示例性实施方式的电极组件1。
参照图1,正极10具有多个正极图案12,多个正极图案12通过以预定间隔用正极活性材料对板状的金属薄膜的集流器11(例如,正极集流器)进行图案涂覆而形成。在多个正极图案12之间形成有未涂覆正极活性材料的正极未涂覆区域13。第一电极接头(下文中,称为“正极接头”)14可以与正极未涂覆区域13联接。
参照图2,负极20具有多个负极图案,多个负极图案通过以预定间隔用负极活性材料对板状的金属薄膜的集流器21(例如,负极集流器)进行图案涂覆而形成。在多个负极图案之间形成未涂覆负极活性材料的负极未涂覆区域23。第二电极接头(下文中,称为“负极接头”)24可以与负极未涂覆区域23联接。
参照图3,为了使根据示例性实施方式的电极组件1具有正极10/隔膜30/负极20的结构,正极10堆叠在隔膜30的一个表面上(例如,隔膜30的上表面),并且负极20堆叠在隔膜30的另一个表面上(例如,隔膜30的下表面),然后,通过弯曲正极未涂覆区域13和负极未涂覆区域23,以Z字形形成电极组件1。
电极组件1的负极未涂覆区域23和正极未涂覆区域13在电极组件1的宽度方向上(图3的水平方向)被设置在彼此相对的两侧。分别与负极未涂覆区域23和正极未涂覆区域13联接的负极接头24和正极接头14位于彼此相对的两侧。
因此,利用根据本发明的电极组件1的结构,即使隔膜收缩,也可以防止短路。
在上文中,为了便于描述,已经描述了具有正极10/隔膜30/负极20的堆叠结构的电极组件1的折叠结构,但是,本发明中的正极、隔膜30和负极的堆叠顺序不限于此。
在下文中,将详细描述包括根据本发明的示例性实施方式的电极组件1的电池。
根据本发明的示例性实施方式的电池包括多个电芯,并且多个电芯中的每一个包括电极组件1。
电极组件1包括正极10、隔膜30、负极20、正极接头14和负极接头。
正极10具有多个正极图案12,多个正极图案12通过以预定间隔用正极活性材料对板状的金属薄膜的集流器11进行图案涂覆而形成。在多个正极图案12之间形成未涂覆正极活性材料的正极未涂覆区域13。正极接头可以与正极未涂覆区域13联接。
负极20具有多个负极图案,多个负极图案通过以预定间隔用负极活性材料对板状的金属薄膜的集流器21进行图案涂覆而形成。在多个负极图案之间形成未涂覆负极活性材料的负极未涂覆区域23。负极接头可以与负极未涂覆区域23联接。
为了使根据本发明的示例性实施方式的电池的电极组件1具有正极10/隔膜30/负极20的结构,正极10堆叠在隔膜30的上表面上,并且负极20堆叠在隔膜30的下表面上,然后,通过弯曲正极未涂覆区域13和负极未涂覆区域23,以Z字形形成电极组件1。
根据本发明的示例性实施方式的电池的电极组件1的负极未涂覆区域23和正极未涂覆区域13在电极组件1的宽度方向上被设置在彼此相对的两侧。分别与负极未涂覆区域23和正极未涂覆区域13联接的负极接头和正极接头14位于彼此相对的两侧。
因此,利用根据本发明的电极组件1的结构,即使隔膜收缩,也可以防止短路。
Claims (10)
1.一种电极组件,该电极组件包括:
正极,该正极具有通过以预定间隔用正极活性材料进行图案涂覆而形成的多个正极图案,并且包括未涂覆所述正极活性材料的正极未涂覆区域;
负极,该负极具有通过以预定间隔用负极活性材料进行图案涂覆而形成的多个负极图案,并且包括未涂覆所述负极活性材料的负极未涂覆区域;以及
隔膜,该隔膜设置在所述正极和所述负极之间,
其中,所述电极组件通过弯曲所述正极未涂覆区域和所述负极未涂覆区域以Z字形形成。
2.根据权利要求1所述的电极组件,其中,
在所述电极组件中,依次堆叠所述正极、所述隔膜和所述负极,并且通过弯曲所述正极未涂覆区域和所述负极未涂覆区域而以Z字形形成所述电极组件。
3.根据权利要求2所述的电极组件,其中,
第一电极接头与所述正极未涂覆区域联接,并且第二电极接头与所述负极未涂覆区域联接。
4.根据权利要求3所述的电极组件,其中,
所述正极被堆叠在所述隔膜的上表面上,并且所述负极被堆叠在所述隔膜的下表面上。
5.根据权利要求4所述的电极组件,其中,
所述第一电极接头和所述第二电极接头被设置在彼此相对的两侧。
6.一种电池,所述电池包括多个电芯,其中,
所述多个电芯中的每一个包括电池组件,
所述电池组件包括:
正极,该正极具有通过以预定间隔用正极活性材料进行图案涂覆而形成的多个正极图案,并且包括未涂覆所述正极活性材料的正极未涂覆区域;
负极,该负极具有通过以预定间隔用负极活性材料进行图案涂覆而形成的多个负极图案,并且包括未涂覆所述负极活性材料的负极未涂覆区域;以及
隔膜,该隔膜设置在所述正极和所述负极之间,
其中,所述电极组件通过弯曲所述正极未涂覆区域和所述负极未涂覆区域以Z字形形成。
7.根据权利要求6所述的电池,其中,
在所述电极组件中,依次堆叠所述正极、所述隔膜和所述负极,并且通过弯曲所述正极未涂覆区域和所述负极未涂覆区域而以Z字形形成所述电极组件。
8.根据权利要求7所述的电池,其中,
第一电极接头与所述正极未涂覆区域联接,并且第二电极接头与所述负极未涂覆区域联接。
9.根据权利要求8所述的电池,其中,
所述正极被堆叠在所述隔膜的上表面上,并且所述负极被堆叠在所述隔膜的下表面上。
10.根据权利要求9所述的电池,其中,
所述第一电极接头和所述第二电极接头被设置在彼此相对的两侧。
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US20220302463A1 (en) | 2021-03-18 | 2022-09-22 | Prologium Technology Co., Ltd. | Electrode assembly and its battery device thereof |
CN113299920B (zh) * | 2021-05-24 | 2022-05-03 | 合肥国轩高科动力能源有限公司 | 一种锂电池卷芯 |
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EP3614477B1 (en) | 2024-03-20 |
US20200335813A1 (en) | 2020-10-22 |
WO2019107776A1 (ko) | 2019-06-06 |
EP3614477A4 (en) | 2020-08-19 |
KR20190064977A (ko) | 2019-06-11 |
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