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CN104054194A - 电池单元 - Google Patents

电池单元 Download PDF

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Publication number
CN104054194A
CN104054194A CN201380005816.7A CN201380005816A CN104054194A CN 104054194 A CN104054194 A CN 104054194A CN 201380005816 A CN201380005816 A CN 201380005816A CN 104054194 A CN104054194 A CN 104054194A
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battery unit
positive terminal
anode connector
housing
plate
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孔明哲
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SK Innovation Co Ltd
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SK Innovation Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general
    • H01M10/0459Cells or batteries with folded separator between plate-like electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • H01M10/0585Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/24Alkaline accumulators
    • H01M10/30Nickel accumulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/172Arrangements of electric connectors penetrating the casing
    • H01M50/174Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • H01M50/547Terminals characterised by the disposition of the terminals on the cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • H01M50/552Terminals characterised by their shape
    • H01M50/553Terminals adapted for prismatic, pouch or rectangular cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • H01M50/564Terminals characterised by their manufacturing process
    • H01M50/566Terminals characterised by their manufacturing process by welding, soldering or brazing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Cell Separators (AREA)

Abstract

本发明涉及一种电池单元,具体地,涉及一种能够防止因热化导致耐久性降低,提高充电和放电效率的电池单元。

Description

电池单元
技术领域
本发明涉及一种电池单元,具体地,涉及一种能够防止因热化导致耐久性降低,提高充电和放电效率的电池单元。
背景技术
通常,二次电池与一次电池不同,能够进行充电和放电,因此适用于数码相机、手机、笔记本电脑、混合动力汽车等各种领域,且对其进行活跃的研究。作为二次电池,可列举镍镉电池、镍金属氢化物电池、镍氢电池、锂二次电池等。
这些二次电池中,对具有高能量密度和放电电压的锂二次电池进行了大量研究,并且得到普及而被广泛使用。
锂二次电池可制造成多种形状,但作为具有代表性的形状可例举主要用于锂离子电池的圆筒型(cylinder type)和棱柱型(prismatictype),最近受瞩目的聚合物锂电池制造成具有柔软性的袋型(pouchedtype),因此其形状比较灵活。
这样的二次电池以负极板和正极板的负极接头和正极接头向外部突出的方式形成,通过所述负极接头和正极接头实施充电和放电。但是,随着反复充电和放电,电池单元内部温度上升,发生电池单元的热化,因此寿命缩短,或者由于袋内部产生气体导致的鼓起的膨胀现象等具有爆炸和起火的危险性。
另一方面,在壳体内部设有多个负极板和正极板的情况下,层压式制造二次电池内部单元。其中,以Z-卷曲(称为Z-folding、zigzagfolding或accordion folding)方式层压形状构成的二次电池内部单元堆,已在多个专利文献中公开。
此时,隔膜3形成为之字形折叠的形状,负极板1及正极板2以交替插入其中的形状来进行层压,但是这种形状的电池单元会使上述说明的因热化导致的耐久性的降低问题更加严重,因此需要一种能够防止热化,进一步提高充电和放电效率的电池单元。
发明内容
(一)要解决的技术问题
本发明是为了解决如上所述的问题而提出的,本发明的目的在于提供一种能够防止因热化导致耐久性降低,提高充电和放电效率的电池单元。
(二)技术方案
为了达成如上所述的目的,本发明的电池单元,其特征在于,包括:电池部,其包括正极板、负极板以及隔膜;正极接头,其从所述正极板延长;负极接头,其从所述负极板延长;壳体,所述正极接头及负极接头向外侧突出,其内部包括所述电池部并进行密封,其中,所述正极接头及负极接头中的一个或全部形成两个以上。
并且,所述电池单元的特征为,所述正极接头及负极接头突出形成在所述壳体的上下左右方向中选择的两个以上的侧面上。
并且,所述电池单元的特征为,所述正极接头及负极接头在所述壳体的上下左右方向中选择的侧面上并排形成两个。
同时,所述电池单元的特征为,充电和放电通过各不相同的所述正极接头及负极接头实施。
并且,所述电池单元的特征为,所述隔膜为之字形折叠的形状,所述正极板及负极板交替插入层压。
(三)有益效果
由此,本发明的电池单元具有能够防止因热化导致耐久性降低,提高充电和放电效率的优点。
附图说明
图1和图2是表示本发明实施例的电池单元的立体图和分解立体图。
图3是表示本发明实施例的电池单元的另一正视图。
图4和图5是表示本发明实施例的电池单元的其他立体图和分解立体图。
图6是表示本发明实施例的电池单元的其他分解立体图。
图7和图8是表示本发明实施例的电池单元的电池部的立体图和剖视图。
附图标记说明
1000:电池单元 110:壳体
120:电池部    121:正极板
122:负极板    123:隔板
130:正极接头(在形成两个的情况下,131:第一正极接头,132:第二正极接头)
140:负极接头(在形成两个的情况下,141:第一负极接头,142:第二负极接头)
具体实施方式
以下,参照附图对具有如上所述的特征的本发明的电池单元1000进行详细说明。
本发明的电池单元1000的特征为,其包括电池部120、正极接头130、负极接头140以及壳体110,正极接头130及负极接头140中的一个或全部形成两个以上。
电池部120包括正极板121、负极板122以及隔膜,其设置在壳体110内部。
正极板121与负极板122之间设有隔膜,且正极板121、隔膜、负极板122与电解质溶液一同设置在壳体110内部。
正极接头130和负极接头140是为了电池部120的充电和放电,而分别从正极板121和负极板122延长形成的结构,向壳体110外侧突出形成。
此时,正极接头130和负极接头140能够焊接形成于正极板121和负极板122上。
壳体110作为形成电池单元1000的基本主体,以袋形状密封。
此时,壳体110可以利用薄膜形状的部件,或可以利用形成有能够设置电池部120的空间的部件。
本发明的电池单元1000中,正极接头130和负极接头140中的一个或全部可形成两个以上。
即,本发明的电池单元1000能够具有两个以上形成于正极板121和负极板122中一个的正极接头130和负极板122,并且能够形成两个以上在正极板121和负极板122上均形成的正极接头130和负极板122。
此时,形成两个以上的正极接头130或负极接头140能够通过不同组合实施充电和放电。
正极接头130和负极接头140能够突出于选自壳体110的上下左右方向中所选择的两个以上的侧面上,能够在所述壳体110的上下左右方向中所选择的侧面上并排形成两个。
由此,本发明的电池单元1000中,形成于正极板121上的正极接头130与形成于负极板122上的负极接头140中的一个或全部形成两个以上,因此能够分离充电和放电接头,具有能够防止因热化导致耐久性下降,提高充电和放电效率的优点。
下面,以图示的第一实施例至第四实施例为基准,对正极接头130及负极接头140的各种形成例进行说明。
第1实施例
图1和图2所示的本发明的第1实施例的电池单元1000示出壳体110为以下侧面为基准折叠而相互密封的形状,正极接头130包括在壳体110上侧面以一定距离间隔设置的第一正极接头131和第二正极接头132而形成,壳体110的右侧面设有单个负极接头140的例子。
第2实施例
图3所示的本发明的第2实施例的电池单元1000示出与图1和图2所示的形状相同,但负极接头140在左侧和右侧面分别包括一个第一负极接头141和第二负极接头142而构成的例子。
此时,能够以第一正极接头131和第二负极接头142实施充电,第二正极接头132和第一负极接头141实施放电功能的方式形成,当然,也能够以相反的方式形成。
第3实施例
图4和图5所示的本发明的第3实施例的电池单元1000示出壳体110为以左侧面为基准折叠而相互密封的形状,正极接头130包括在壳体110上侧面以一定距离间隔设置的第一正极接头131和第二正极接头132而构成,负极接头140包括在壳体110下侧面以一定距离间隔设置的第一负极接头141和第二负极接头142而构成的例子。
第4实施例
图6所示的本发明的第4实施例的电池单元1000示出壳体110由两个结构分开形成,正极接头130包括设置在壳体110上侧和侧面一侧的第一正极接头131和第二正极接头132而构成,负极接头140包括设置在壳体110下面及侧面另一侧的第二负极接头142和第二负极接头142而构成的例子。
同时,图中虽没有示出本发明的电池单元1000,其可以是正极板121上侧及下侧形成有第一正极接头131和第二正极接头132,负极板122两侧面形成有第一负极接头141和第二负极接头141的形状。
第5实施例
图7和图8所示的本发明的第5实施例的电池单元1000示出隔膜为之字形折叠的形状,正极板121和负极板122交替插入层压的例子,图7中表示了正极接头130包括向图前侧和后侧方向突出的第一正极接头131和第二正极接头132而构成,负极接头140包括向图前侧和后侧方向突出的第一负极接头141和第二负极接头142而构成的例子。
但本发明的电池单元中,下面第1实施例至第4实施例为一实施例,本发明的电池单元的正极接头和负极接头可以形成为与上述第1实施例至第4实施例中形成的正极接头和负极接头相反,正极接头和负极接头的数量及形成位置除说明的例子以外,还可以进行多种变更。
本发明并不限定于上述实施例,其适用范围多样,而且在不脱离权利要求所要求保护的本发明的主旨的范围内,只要是具有本发明所属技术领域普通知识的人,均能够进行各种变更。

Claims (5)

1.一种电池单元,其特征在于,包括:
电池部,其包括正极板、负极板以及隔膜;
正极接头,其从所述正极板延长;
负极接头,其从所述负极板延长;
壳体,所述正极接头及负极接头向外侧突出,其内部包括所述电池部而密封;
其中,所述正极接头及负极接头中的一个或全部形成两个以上。
2.根据权利要求1所述的电池单元,其特征在于,所述电池单元的所述正极接头及负极接头突出形成在所述壳体的上下左右方向中选择的两个以上的侧面上。
3.根据权利要求2所述的电池单元,其特征在于,所述电池单元的所述正极接头及负极接头在所述壳体的上下左右方向中选择的侧面上并排形成两个。
4.根据权利要求2或3所述的电池单元,其特征在于,所述电池单元的充电和放电通过各不相同的所述正极接头及负极接头实施。
5.根据权利要求4所述的电池单元,其特征在于,所述电池单元的所述隔膜为之字形折叠的形状,且所述正极板及负极板交替插入层压。
CN201380005816.7A 2012-02-07 2013-01-09 电池单元 Pending CN104054194A (zh)

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KR10-2012-0012228 2012-02-07
KR1020120012228A KR20130091031A (ko) 2012-02-07 2012-02-07 배터리 셀
PCT/KR2013/000149 WO2013118972A1 (ko) 2012-02-07 2013-01-09 배터리 셀

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JP (1) JP2015512119A (zh)
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WO (1) WO2013118972A1 (zh)

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