CN1210820C - 电池组 - Google Patents

电池组 Download PDF

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Publication number
CN1210820C
CN1210820C CNB021471088A CN02147108A CN1210820C CN 1210820 C CN1210820 C CN 1210820C CN B021471088 A CNB021471088 A CN B021471088A CN 02147108 A CN02147108 A CN 02147108A CN 1210820 C CN1210820 C CN 1210820C
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battery
insulating properties
protection member
relief valve
pressure relief
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CN1412865A (zh
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冈本季贵
藤塚幸一
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Envision Aesc Energy Components Co ltd
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NEC Tokin Tochigi Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • H01M50/30Arrangements for facilitating escape of gases
    • 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
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/584Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • 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
    • H01M50/572Means for preventing undesired use or discharge
    • H01M50/584Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593Spacers; Insulating plates
    • 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
    • H01M50/30Arrangements for facilitating escape of gases
    • H01M50/342Non-re-sealable arrangements
    • H01M50/3425Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

一种电池组,在设有利用电池密封外壳的电池的电池组中,是一种压力释放阀的动作不受绝缘性保护构件的恶劣影响的电池组,其特征为,在所形成的设于电池密封外壳上的压力释放阀的表面上,安装绝缘性保护构件,所述绝缘性保护构件在压力释放阀所处的位置上设有至少一个与形成压力释放阀的面的外周部连通的开口部。

Description

电池组
技术领域
本发明涉及电池组,涉及将由电池的密封外壳构成的电池的电极端子等绝缘,把保护电池的保护构件安装到电池表面上的电池组。
背景技术
锂离子电池等充放电容量密度大的电池,很少被单独使用,通常作为和内装部件一起容纳到合成树脂制造的框体等内的电池组安装到使用电池的设备上,其中,所述内装部件由在电池端子短路等情况下流过太大的电流时,或者电池温度过高等的情况下过放电时切断电流、对电池进行保护的充放电保护电路等构成。
容纳在电池组内的电池,采用中间加装绝缘材料形成在电池密封外壳上的电极端子,并把电池密封外壳作为另一个电极端子。
为了不让这些电极端子或从电极端子引出的不同的极性的导电连接片相互接触造成短路,在电池表面的电极端子附近等处用绝缘材料进行包覆。
图3是说明将绝缘性保护构件安装到电池表面上的电池组的一个例子的图示。
图3(A)是说明容纳在电池组内的电池的说明图。在从电池密封外壳3的开口部将中间经由隔离层使正电极和负电极对向地卷绕成的电池部件容纳之后,装上电池端板4,将周围封口制成电池2。
在电池端板4上,中间经由绝缘性构件在金属板上安装与电池密封外壳3的极性不同的电极端子5。
此外,在电池端板4上,设置由壁比较薄的薄壁部构成的压力释放阀6,用于在电池的端子短路等时,电池的反应发生异常,电池的内部压力增大时,将电池内部的压力释放,以便避免电池发生破裂。
图3(B)是电池组的说明图。在电池组1中,和具有对过充电、过放电进行保护的保护电路的电路基板等内装部件一起,将电池2容纳在用虚线表示的合成树脂成形体构成的框体7内,并且在框体7的表面上设置导电连接端子9。
此外,在以电池端板部为主的电池外表面上,除电极端子部接头片的接合区域之外,粘贴绝缘性保护构件10,将连接到电池的电极端子上的导电连接接头片11与内装构件8接合。
然后,如图3(B)所示,由于绝缘性保护构件10也将图中用虚线表示的压力释放阀6的上部覆盖,所以,绝缘性保护构件会使压力释放阀难以迅速动作,出现异常时,很难保证电池不会产生破裂。
发明内容
本发明的目的是,提供一种电池组,其压力释放阀的动作不受安装在电池组内的电池表面上的绝缘性保护构件的影响,进行可靠的压力释放动作,不存在电池破裂等危险。
本发明的课题,可以用如下所述的电池组加以解决,即,在具有利用电池密封外壳的电池的电池组中,在具有压力释放阀的表面上安装有绝缘性保护构件,在绝缘性保护构件上,具有至少一个位于压力释放阀上、并且与形成压力释放阀的表面的外周部连通的开口部。
前述电池组中,设置在绝缘性保护构件上的开口部形成在相对于绝缘性保护构件的中心对称的位置上。
前述电池组中,绝缘性保护构件是耐热性合成纸2。
附图的简单说明
图1是说明本发明的电池组的一个实施例的图示。
图2是说明设置在电池端板上的绝缘性保护构件的图示。
图3是说明把绝缘性保护构件安装到电池表面上的电池组的一个例子的图示。
对优选实施例的描述
根据本发明,在电池组中,通过将作为防止接合到电池密封外壳上的电极端子上的导电连接片与电池密封外壳短路、防止电池表面的氧化等安装的绝缘性保护构件制成特殊的形状,可以防止对压力释放阀的动作造成恶劣的影响。
下面参照附图对本发明进行说明。
图1是说明本发明的电池组的一个实施例的图示。
图1(A)是说明容纳在电池组内的电池的图示。把中间经由隔离层将正电极和负电极对向卷绕制成的电池部件从电池密封外壳3的开口部容纳到该密封外壳中之后,安装电池端板4,将周围封口制成电池2。
在电池端板4上,中间经由绝缘性保护构件将与电池密封外壳2极性不同的电极端子5安装到金属板上。
此外,在电池端板4上设置由厚度薄的薄壁等构成的压力释放阀6,用于在电池的端子短路等时、电池反应出现异常、电池内部压力增大的情况下,释放电池内部的压力,以避免发生电池破裂等事故。
图1(B)是说明本发明的电池组的图示。
在电池组1中,将电池2和具有保护电池免于过充电、过放电的保护电路的电路基板等内装部件8一起容纳到用虚线表示的由合成树脂的成形体构成的框体7内,在框体7的表面上设置导电连接端子9。
此外,在以电池端板部为主的电池外表面上,除去电极端子部的接头片的接合区域之外,粘贴绝缘性保护构件10,将连接到电池的电池端子上的导电连接接头片11与内装部件8接合。
此外,绝缘性保护构件10安装到具有压力释放阀的表面上,但在位于压力释放阀上的部分上,设有与具有压力释放阀6的表面的外周部连通的开口部12。
由于设有与具有压力释放阀的表面外周部连通的开口部,所以在电池内部的压力上升、压力释放阀动作时,压力从开口部12迅速被释放,从而可以避免发生电池的破裂等危险事故。
图2是说明设于电池端板上的绝缘性保护构件的图示。
图2(A)表示,在把绝缘性保护构件10安装到电池组上时,在电池的压力释放阀位置13处设置的开口部12a,在相对于绝缘性保护构件10的中心与开口部12a对称的位置处,形成开口部12b,在中心部设置电极端子开口14。
借此,在把绝缘性保护构件10安装到电池上时,即使绝缘性保护构件的方向装反,在电池的应力释放阀的位置上都存在其中任意一个开口部。
此外,图2(B)也是在对称的位置上设置两个开口部12a,12b,即使绝缘性保护构件10反转,其中任意一个开口部仍会存在于电池的应力释放阀的位置13处。
图2(C)表示在对称的位置处设置四个开口部12a,12b,12c及12d,由于在压力释放阀位置13处总是存在有两个开口部,所以,可以更迅速地释放压力。
这些开口部的优选的大小因电池的大小而异,在厚度约为几个毫米的电池的情况下,优选地设置宽0.5mm~1.0mm,长0.5mm~1.0mm的开口部。
此外,作为绝缘性保护构件,可以列举出在具有绝缘性的同时、对焊接、钎焊等时产生的热具有耐热性的芳香族聚酰胺类合成纸,例如,杜邦公司制的诺梅克斯(Nomex),可以利用粘接性物质将绝缘性保护构件粘贴到电池表面上。
本发明的电池组,在赋予电池表面以绝缘性、并对电池进行保护使用的绝缘性保护构件所处的电池的压力释放阀的位置上,设置与设有电池的压力释放阀的表面的外周部连通的开口部,所以,不会由于所安装的绝缘性保护构件妨碍压力释放阀的动作,压力释放阀可以迅速动作,从而可以获得安全性很高的电池组。

Claims (4)

1、一种电池组,是具有采用电池密封外壳的电池的电池组,其特征为,在具有压力释放阀的表面上安装有绝缘性保护构件,在绝缘性保护构件上,具有至少一个位于压力释放阀上、并且与形成压力释放阀的表面的外周部连通的开口部。
2、如权利要求1所述的电池组,其特征为,绝缘性保护构件是耐热性合成纸。
3、如权利要求1所述的电池组,其特征为,设于绝缘性保护构件上的开口部形成在相对于绝缘性保护构件的中心对称的位置上。
4、如权利要求2所述的电池组,其特征为,设于绝缘性保护构件上的开口部形成在相对于绝缘性保护构件的中心对称的位置上。
CNB021471088A 2001-10-16 2002-10-16 电池组 Expired - Lifetime CN1210820C (zh)

Applications Claiming Priority (2)

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JP2001318126A JP4039657B2 (ja) 2001-10-16 2001-10-16 電池パック
JP318126/2001 2001-10-16

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CN1412865A CN1412865A (zh) 2003-04-23
CN1210820C true CN1210820C (zh) 2005-07-13

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JP (1) JP4039657B2 (zh)
KR (1) KR100462356B1 (zh)
CN (1) CN1210820C (zh)
TW (1) TW574763B (zh)

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US8956746B2 (en) * 2005-06-22 2015-02-17 Lenovo (Singapore) Pte. Ltd. Apparatus, system, and method for battery venting containment

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JP2971031B2 (ja) * 1996-06-18 1999-11-02 サンリット工業株式会社 リチウム二次電池
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US20030072992A1 (en) 2003-04-17
JP2003123713A (ja) 2003-04-25
KR20030031871A (ko) 2003-04-23
JP4039657B2 (ja) 2008-01-30
KR100462356B1 (ko) 2004-12-17
CN1412865A (zh) 2003-04-23

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Granted publication date: 20050713