CN202231110U - 锂离子二次电池 - Google Patents

锂离子二次电池 Download PDF

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Publication number
CN202231110U
CN202231110U CN201120368513XU CN201120368513U CN202231110U CN 202231110 U CN202231110 U CN 202231110U CN 201120368513X U CN201120368513X U CN 201120368513XU CN 201120368513 U CN201120368513 U CN 201120368513U CN 202231110 U CN202231110 U CN 202231110U
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China
Prior art keywords
negative pole
current collector
pole
negative
lithium ion
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CN201120368513XU
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李震祺
刘立君
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Shenzhen Liwei Li-Energy Technology Co Ltd
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    • 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

Abstract

本实用新型提供一种锂离子二次电池,包括正极、负极、设置于正极及负极之间的隔膜、电解液及壳体,正极、隔膜及负极层叠排布形成极芯,所述极芯收容于所述壳体中,所述负极设有负极集流体,所述负极集流体采用电解铁箔。所述负极集流体的厚度小于12微米。相本实用新型的锂离子二次电池的负极集流体采用电解铁箔制成,经测试采用电解铁箔为负极集流体并没有影响电池的性能,且由于电解铁箔具有原料易得、造价低廉等特点,可明显降低了锂离子二次电池的制造成本。

Description

锂离子二次电池
技术领域
[0001] 本实用新型涉及一种锂离子二次电池,尤其涉及一种制造成本低的锂离子二次电池。
背景技术
[0002] 锂离子二次电池具有工作电压高、工作温度范围宽、使用寿命长、无记忆效应、无污染、比能量高、自放电小、循环寿命长等优点。经过近年来的快速发展,锂离子二次电池得到越来越广泛地运用。
[0003] 锂离子二次电池通常包括极性相反的正极、负极及隔膜。而负极上通常会设有负极活性物质及负极集流体,负极集流体用于将负极活性物质产生的电流汇集起来以便形成较大的电流对外输出。目前负极集流体普遍是采用电解铜箔或是压延铜箔、泡沫镍等,但铜和镍的成本较高。
实用新型内容
[0004] 为了克服上述现有技术的不足,本实用新型提供一种锂离子二次电池。
[0005] 一种锂离子二次电池,包括正极、负极、设置于正极及负极之间的隔膜、电解液及壳体,正极、隔膜及负极层叠排布形成极芯,所述极芯收容于所述壳体中,所述负极设有负极集流体,所述负极集流体采用电解铁箔。
[0006] 本实用新型的进一步改进为,所述负极集流体的厚度小于12微米。
[0007] 相较于现有技术,本实用新型的锂离子二次电池的负极集流体采用电解铁箔制成,经测试采用电解铁箔为负极集流体并没有影响电池的性能,且由于电解铁箔具有来源广、价格低廉等特点,可明显降低了锂离子二次电池的制造成本。
附图说明
[0008] 图1是本实用新型锂离子二次电池的极芯的结构示意图。 具体实施方式
[0009] 下面结合附图说明及具体实施方式对本实用新型进一步说明。
[0010] 请参阅图1,本实用新型提供了一种锂离子二次电池10,包括正极11、负极13、设置于正极11及负极13之间的隔膜15、电解液(图未示)及壳体(图未示)。正极11、隔膜15 及负极13层叠排布形成极芯,极芯收容于壳体中。正极11包括正极集流体111及分布于正极集流体111的正极活性物质113,负极13包括负极集流体131及分布于负极集流体131 的负极活性物质133,所述负极集流体131采用电解铁箔,所述负极集流体131的厚度小于 12微米。
[0011] 本实用新型的锂离子二次电池10的负极集流体131采用电解铁箔制成,经测试, 采用电解铁箔为负极集流体131并没有影响电池的性能,且由于电解铁箔具有来源广、价格低廉等特点,可明显降低了锂离子二次电池10的制造成本。
[0012] 以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明,不能认定本实用新型的具体实施只局限于这些说明。对于本实用新型所属技术领域的普通技术人员来说,在不脱离本实用新型构思的前提下,还可以做出若干简单推演或替换,都应当视为属于本实用新型的保护范围。

Claims (2)

1. 一种锂离子二次电池,其特征在于:所述锂离子二次电池包括正极、负极、设置于正极及负极之间的隔膜、电解液及壳体,正极、隔膜及负极层叠排布形成极芯,所述极芯收容于所述壳体中,所述负极设有负极集流体,所述负极集流体采用电解铁箔。
2.根据权利要求1所述锂离子二次电池,其特征在于:所述负极集流体的厚度小于12 微米。
CN201120368513XU 2011-09-30 2011-09-30 锂离子二次电池 Expired - Fee Related CN202231110U (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014017968A1 (en) * 2012-07-26 2014-01-30 Lifesize Ab Sustainable current collectors for lithium batteries
CN104134802A (zh) * 2014-07-16 2014-11-05 苏州宇量电池有限公司 锂电池

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014017968A1 (en) * 2012-07-26 2014-01-30 Lifesize Ab Sustainable current collectors for lithium batteries
CN104584291A (zh) * 2012-07-26 2015-04-29 丽视股份有限公司 用于锂电池的可持续集电体
EP2878024A4 (en) * 2012-07-26 2016-03-23 Lifesize Ab DURABLE CURRENT COLLECTORS FOR LITHIUM BATTERIES
CN104134802A (zh) * 2014-07-16 2014-11-05 苏州宇量电池有限公司 锂电池

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Address before: 518000, Guangdong, Shenzhen, Baoan District, Longhua town on the big wave, horizontal Lang Baiyun Mountain village, Xin Yongfeng Industrial Zone, A District, two floor

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