CN105390740A - 一种锂离子电池 - Google Patents

一种锂离子电池 Download PDF

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CN105390740A
CN105390740A CN201510867589.XA CN201510867589A CN105390740A CN 105390740 A CN105390740 A CN 105390740A CN 201510867589 A CN201510867589 A CN 201510867589A CN 105390740 A CN105390740 A CN 105390740A
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lithium ion
ion battery
electrode plate
metal shell
inner casing
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缪家戌
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Chengdu Kechuang Jiasi 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/409—Separators, membranes or diaphragms characterised by the material
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0025—Organic electrolyte
    • 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

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

本发明公开一种锂离子电池，包括金属外壳、绝缘内壳、正极片和负极片，所述绝缘内壳设在金属外壳内，所述绝缘内壳与金属外壳胶合连接，所述正极片外侧设置有聚偏氟乙烯隔膜，所述正极片、聚偏氟乙烯隔膜和负极片依次从内至外胶合连接，所述负极片外侧设置有绝缘胶带，所述绝缘胶带分别与正极片、聚偏氟乙烯隔膜和负极片胶合连接，所述绝缘内壳设置有电解液，所述电解液为碳酸丙烯酯电解液，所述金属外壳上设置有注液孔和极耳，所述注液孔与绝缘内壳连通，该锂离子电池散热效果好，使用寿命长，结构稳定可靠，维护方便。

Description

一种锂离子电池
技术领域
本发明涉及一种锂电池技术领域，特别是涉及一种锂离子电池。
背景技术
锂离子电池：是一种二次电池（充电电池），它主要依靠锂离子在正极和负极之间移动来工作，在充放电过程中，Li+在两个电极之间往返嵌入和脱嵌：充电时，Li+从正极脱嵌，经过电解质嵌入负极，负极处于富锂状态；放电时则相反，电池一般采用含有锂元素的材料作为电极，是现代高性能电池的代表，锂系电池分为锂电池和锂离子电池，手机和笔记本电脑使用的都是锂离子电池，通常人们俗称其为锂电池，而真正的锂电池由于危险性大，很少应用于日常电子产品。
可充电锂离子电池是目前手机、笔记本电脑等现代数码产品中应用最广泛的电池，但它较为“娇气”，在使用中不可过充、过放(会损坏电池或使之报废)，因此，在电池上有保护元器件或保护电路以防止昂贵的电池损坏，锂离子电池充电要求很高，要保证终止电压精度在±1%之内，各大半导体器件厂已开发出多种锂离子电池充电的IC，以保证安全、可靠、快速地充电，手机基本上都是使用锂离子电池，正确地使用锂离子电池对延长电池寿命是十分重要的，它根据不同的电子产品的要求可以做成扁平长方形、圆柱形、长方形及扣式，并且有由几个电池串联并联在一起组成的电池组，锂离子电池的额定电压，因为材料的变化，一般为3.7V，磷酸铁锂（以下称磷铁）正极的则为3.2V，充满电时的终止充电电压一般是4.2V，磷铁3.65V，锂离子电池的终止放电电压为2.75V～3.0V(电池厂给出工作电压范围或给出终止放电电压，各参数略有不同，一般为3.0V，磷铁为2.5V)，低于2.5V（磷铁2.0V）继续放电称为过放，过放对电池会有损害。
锂离子电池散热效果不好，长时间使用存在一定的安全隐患，维护不方便。
发明内容
本发明要解决的技术问题是提供一种散热效果好，使用寿命长，结构稳定可靠，维护方便的锂离子电池。
为解决上述问题，本发明采用如下技术方案：一种锂离子电池，包括金属外壳、绝缘内壳、正极片和负极片，所述绝缘内壳设在金属外壳内，所述绝缘内壳与金属外壳胶合连接，所述正极片外侧设置有聚偏氟乙烯隔膜，所述正极片、聚偏氟乙烯隔膜和负极片依次从内至外胶合连接，所述负极片外侧设置有绝缘胶带，所述绝缘胶带分别与正极片、聚偏氟乙烯隔膜和负极片胶合连接，所述绝缘内壳设置有电解液，所述电解液为碳酸丙烯酯电解液，所述金属外壳上设置有注液孔和极耳，所述注液孔与绝缘内壳连通。
作为优选，所述极耳设有一个以上，极耳方便电池导出电流。
作为优选，所述极耳分别与正极片和负极片电性连接，保持电路连接顺畅。
作为优选，所述金属外壳上设置有散热通孔，保持散热效率高。
作为优选，所述散热通孔设有一个以上。
本发明的有益效果是：设置的金属外壳保持散热效果好，绝缘内壳保持良好的绝缘性，聚偏氟乙烯隔膜耐腐蚀使用寿命长，绝缘胶带分别与正极片、聚偏氟乙烯隔膜和负极片胶合连接保持结构稳定性好，采用碳酸丙烯酯电解液方便维护，无毒使用安全。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的一种锂离子电池的结构图。
具体实施方式
参阅图1所示，一种锂离子电池，包括金属外壳1、绝缘内壳2、正极片3和负极片4，所述绝缘内壳2设在金属外壳1内，所述绝缘内壳2与金属外壳1胶合连接，所述正极片3外侧设置有聚偏氟乙烯隔膜5，所述正极片3、聚偏氟乙烯隔膜5和负极片4依次从内至外胶合连接，所述负极片4外侧设置有绝缘胶带6，所述绝缘胶带6分别与正极片3、聚偏氟乙烯隔膜5和负极片4胶合连接，所述绝缘内壳2设置有电解液7，所述电解液7为碳酸丙烯酯电解液，所述金属外壳1上设置有注液孔8和极耳9，所述注液孔8与绝缘内壳2连通。
所述极耳9设有一个以上。
所述极耳9分别与正极片3和负极片4电性连接。
所述金属外壳1上设置有散热通孔10。
所述散热通孔10设有一个以上。
本发明的有益效果是：设置的金属外壳保持散热效果好，绝缘内壳保持良好的绝缘性，聚偏氟乙烯隔膜耐腐蚀使用寿命长，绝缘胶带分别与正极片、聚偏氟乙烯隔膜和负极片胶合连接保持结构稳定性好，采用碳酸丙烯酯电解液方便维护，无毒使用安全。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何不经过创造性劳动想到的变化或替换，都应涵盖在本发明的保护范围之内，因此，本发明的保护范围应该以权利要求书所限定的保护范围为准。

Claims (5)

1.一种锂离子电池，其特征在于：包括金属外壳、绝缘内壳、正极片和负极片，所述绝缘内壳设在金属外壳内，所述绝缘内壳与金属外壳胶合连接，所述正极片外侧设置有聚偏氟乙烯隔膜，所述正极片、聚偏氟乙烯隔膜和负极片依次从内至外胶合连接，所述负极片外侧设置有绝缘胶带，所述绝缘胶带分别与正极片、聚偏氟乙烯隔膜和负极片胶合连接，所述绝缘内壳设置有电解液，所述电解液为碳酸丙烯酯电解液，所述金属外壳上设置有注液孔和极耳，所述注液孔与绝缘内壳连通。
2.根据权利要求1所述的锂离子电池，其特征在于：所述极耳设有一个以上。
3.根据权利要求1所述的锂离子电池，其特征在于：所述极耳分别与正极片和负极片电性连接。
4.根据权利要求1所述的锂离子电池，其特征在于：所述金属外壳上设置有散热通孔。
5.根据权利要求1所述的锂离子电池，其特征在于：所述散热通孔设有一个以上。
CN201510867589.XA 2015-12-02 2015-12-02 一种锂离子电池 Pending CN105390740A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109449322A (zh) * 2018-12-21 2019-03-08 河南鼎能电子科技有限公司 一种具有超薄金属外壳的新型锂电池

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US20080254344A1 (en) * 2002-02-04 2008-10-16 Nissan Chemical Industries , Ltd. Lithium Secondary Battery Having Internal Protection Circuit
CN102110824A (zh) * 2011-01-28 2011-06-29 福建南平南孚电池有限公司 一种锂-二硫化铁电池
CN102956852A (zh) * 2012-11-25 2013-03-06 杭州万马高能量电池有限公司 一种汽车用锂离子电池
CN103311568A (zh) * 2012-03-14 2013-09-18 昆山正国能源科技有限公司 大容量磷酸铁锂动力电池
CN205177961U (zh) * 2015-12-02 2016-04-20 东莞环亚高科电子有限公司 一种锂离子电池

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Publication number Priority date Publication date Assignee Title
US20080254344A1 (en) * 2002-02-04 2008-10-16 Nissan Chemical Industries , Ltd. Lithium Secondary Battery Having Internal Protection Circuit
CN102110824A (zh) * 2011-01-28 2011-06-29 福建南平南孚电池有限公司 一种锂-二硫化铁电池
CN103311568A (zh) * 2012-03-14 2013-09-18 昆山正国能源科技有限公司 大容量磷酸铁锂动力电池
CN102956852A (zh) * 2012-11-25 2013-03-06 杭州万马高能量电池有限公司 一种汽车用锂离子电池
CN205177961U (zh) * 2015-12-02 2016-04-20 东莞环亚高科电子有限公司 一种锂离子电池

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109449322A (zh) * 2018-12-21 2019-03-08 河南鼎能电子科技有限公司 一种具有超薄金属外壳的新型锂电池

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