CN103618051A - 一种圆柱形正负极同向锂电池 - Google Patents

一种圆柱形正负极同向锂电池 Download PDF

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CN103618051A
CN103618051A CN201310573127.8A CN201310573127A CN103618051A CN 103618051 A CN103618051 A CN 103618051A CN 201310573127 A CN201310573127 A CN 201310573127A CN 103618051 A CN103618051 A CN 103618051A
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shell
lithium battery
open end
anode
cathode
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刘志伟
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HUIZHOU HENGTAI TECHNOLOGY Co Ltd
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HUIZHOU HENGTAI TECHNOLOGY Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing 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)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

本发明公开了一种圆柱形正负极同向锂电池，包括具有一端开口的圆筒状外壳以及电池芯，电池芯封装于外壳中，开口端安装有密封盖，与电芯正负极相连接的电极导针贯穿于密封盖并延伸至外壳开口端外，所述的外壳的开口端设为锥形，密封盖位于锥形开口端内，通过锥形向内挤压固定密封盖。本发明具有结构简单，安全性高，使用密封盖固定电极导针，可以有效防止正负电极相碰造成短路，使用方便，采用锥形开口提高了密封质量，降低了加工难度，简化工艺，提高生产效率，并且也具有良好的密封效果。

Description

一种圆柱形正负极同向锂电池
技术领域
本发明属于锂电池应用领域，具体涉及一种圆柱形正负极同向锂电池。
背景技术
    目前，一般使用的圆柱形锂电池的正负极通常分布在圆柱形的两端，使用时容易将电极裝反而损坏设备，而且安全性能不高；当多个锂电池串联和/或并联时连接复杂。为此，结构简单、使用方便、安全系数高、生产工艺简单成为锂电池研发的趋势发展。
发明内容
有鉴于此，本发明提供一种结构简单、安全性能高、工艺简单的圆柱形正负极同向锂电池。
本发明采取的设计方案为：一种圆柱形正负极同向锂电池，包括具有一端开口的圆筒状外壳以及电池芯，电池芯封装于外壳中，开口端安装有密封盖，与电芯正负极相连接的电极导针贯穿于密封盖并延伸至外壳开口端外，所述的外壳的开口端设为锥形，密封盖位于锥形开口端内，通过锥形向内挤压固定密封盖。
作为本发明的改进，所述的圆筒状外壳的底面或侧面设有“一”字形或“米”字形的防爆压痕。
作为本发明的进一步改进，所述的密封盖的下端为与外壳开口端相匹配的锥形，密封盖的上端外径大于锥形开口端的内径。
与现有技术相比，本发明具有结构简单，安全性高，使用密封盖固定电极导针，可以有效防止正负电极相碰造成短路，使用方便，外壳开口端采用锥形设计可以有效的降低生产加工难度，简化工艺，提高生产效率，并且也具有良好的密封效果。
附图说明
图1 为本发明的第一种实施方式结构示意图。
图2为本发明的第二种实施方式结构示意图。
图3为本发明的第三种实施方式结构示意图。
图4 为本发明的第四种实施方式结构示意图。
具体实施方式
为了让本领域的技术人员更好地理解本发明的技术方案，下面结合附图对本发明作进一步阐述。
图1 为本发明圆柱形正负极同向锂电池的第一种实施方式。如图1所示，一种圆柱形正负极同向锂电池，包括具有一端开口的圆筒状外壳1以及电池芯，电池芯封装于外壳1中，开口端安装有密封盖2。电芯正负极分别与电极导针3连接，电极导针3贯穿于密封盖2并延伸至外壳1开口端外，盖密封2采用绝缘性能好的材料制作而成，这样可以有效防止正负电极导针相碰而造成短路。所述的外壳1的开口端设为锥形，而密封盖2的下端为与外壳1开口端相匹配的锥形，密封盖2的下端安装在锥形开口端内，通过锥形向内挤压密封盖2，实现密封盖2的固定而且还具有密封效果。密封盖2的上端外径大于锥形开口端的内径。开口端采用锥形设计封装简单，可以有效的降低生产加工难度，简化工艺，提高生产效率。
为了提高锂电池的安全性能，防止锂电池在使用过程中爆炸，在圆筒状外壳1的侧面设有“一”字形的防爆压痕4，该防爆压痕4可以有效的将锂电池在使用该过程中产生的气体及时排出。
本发明的第二种实施方式防爆压痕设计在外壳的侧面为“米”字形（如附图2所示）、第三种实施方式防爆压痕设计在外壳的侧面为“一”字形（如附图3所示）以及第四种实施方式防爆压痕设计在外壳的侧面为“米”字形（如附图4所示）的圆柱形正负极同向锂电池，与第一种实施方式的结构相同，只是防爆压痕的位置关系的变化，在此不再作重复说明。
以上为本发明较佳的实现方式，需要说明的是，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形，但这些改变和变形都应属于本发明所附的权利要求的保护范围。

Claims (3)

1.一种圆柱形正负极同向锂电池，包括具有一端开口的圆筒状外壳（1）以及电池芯，电池芯封装于外壳中，开口端安装有密封盖（2），与电芯正负极相连接的电极导针（3）贯穿于密封盖（2）并延伸至外壳（1）开口端外，其特征在于，所述的外壳（1）的开口端设为锥形，密封盖（2）位于锥形开口端内，通过锥形向内挤压固定密封盖（2）。
2.根据权利要求1所述的圆柱形正负极同向锂电池，其特征在于，所述的圆筒状外壳（1）的底面或侧面设有“一”字形或“米”字形的防爆压痕（4）。
3.根据权利要求1所述的圆柱形正负极同向锂电池，其特征在于，所述的密封盖（2）的下端为与外壳开口端相匹配的锥形，密封盖（2）的上端外径大于锥形开口端的内径。
CN201310573127.8A 2013-11-18 2013-11-18 一种圆柱形正负极同向锂电池 Pending CN103618051A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5665483A (en) * 1994-06-03 1997-09-09 Furukawa Denchi Kabushiki Kaisha Sealed storage battery
EP0948065A1 (fr) * 1998-03-30 1999-10-06 Renata AG Event de sécurité pour accumulateur ou pile
CN201689941U (zh) * 2010-06-11 2010-12-29 东莞市德而泰新能源科技有限公司 一种圆柱形铝壳束腰封口正负极同向引出的锂离子电池

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5665483A (en) * 1994-06-03 1997-09-09 Furukawa Denchi Kabushiki Kaisha Sealed storage battery
EP0948065A1 (fr) * 1998-03-30 1999-10-06 Renata AG Event de sécurité pour accumulateur ou pile
CN201689941U (zh) * 2010-06-11 2010-12-29 东莞市德而泰新能源科技有限公司 一种圆柱形铝壳束腰封口正负极同向引出的锂离子电池

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Application publication date: 20140305