CN101401250B - 一种软包装大容量锂离子电池及其制作方法 - Google Patents

一种软包装大容量锂离子电池及其制作方法 Download PDF

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CN101401250B
CN101401250B CN2006800537373A CN200680053737A CN101401250B CN 101401250 B CN101401250 B CN 101401250B CN 2006800537373 A CN2006800537373 A CN 2006800537373A CN 200680053737 A CN200680053737 A CN 200680053737A CN 101401250 B CN101401250 B CN 101401250B
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岳载
徐华
吴宁宁
雷向利
其鲁
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CITIC Guoan Mengguli New Energy Technology Co Ltd
RiseSun MGL New Energy Technology Co Ltd
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Abstract

一种软包装大容量锂离子电池及其制作方法,该电池是由铝塑复合膜密封封装好的电池芯组成。电池芯是由正极片、负极片和隔膜交替层叠而成,所述正极片和负极片沿其长度方向划分出涂布区和未涂布区,所述多个正极片的未涂布区从所述层叠而成的结构的一侧面延伸出来,并翻折延伸到所述层叠结构的顶表面上形成正极集流体,所述多个负极片的未涂布区也均从所述层叠结构的另一相对侧面延伸出来,并同样翻折延伸到所述层叠结构的所述顶表面上形成负极集流体;采用大面积的薄铝板做正、负极耳,使其和正、负极片的集流体大面积的充分接触,以减少电池的内阻,并增加电池大电流充放的能力。

Description

一种软包装大容量锂离子电池及其制作方法
技术领域
本发明涉及动力电池领域,尤其涉及大容量(30Ah以上)的软包装锂离子动力电池。
背景技术
目前生产大容量(30Ah以上)的锂离子动力电池,一般都是采用硬壳(金属或厚壁塑料)封装,这样做的优点是由电芯引出能通过大电流的极柱(或称极耳)和易于设置安全阀;缺点是安全阀的保险系数低,电池一旦出现内部短路,过充或意外碰撞、挤压易发生爆炸等安全事故,其次是这种封装,壳体重,电池重量比能量不高,以及工艺较复杂,设备投资大。为了避免硬壳封装的这些缺点,人们尝试用铝塑复合膜来封装锂离子电池,并且在小容量的电池上被广泛地采用,但在大容量(30Ah以上)锂离子电池方面,仍然沿用小电池的一些工艺,为单片单极耳卷绕电芯,或冲切极片、隔膜再一层层叠成电芯的方式,便很难达到降低电池内阻及大电流充放电的要求。
发明内容
本发明的目的,是为了提供一种制作方法简单,电池内阻小,安全性好,且适合大电流充放的大容量软包装锂离子电池的制作方法。
为了实现上述目的,本发明提供了一种软包装大容量锂离子电池,包括电池芯、封装所述电池芯的软包装壳体、容纳在所述壳体内的电解液、与所述电池芯连接并引出到所述壳体外部的极耳。
所述电池芯包括多个正极片和多个负极片,所述正极片和负极片为形状基本相同的金属长型片材,并且分别沿其长度方向划分出涂布区和未涂布区,所述正极片的涂布区两面涂有正极活性材料,所述负极片的涂布区两面涂有负极活性材料;所述正极片的涂布区和所述负极片的涂布区大小基本相同,并基本上平展地延伸,所述涂布区的延伸长度基本上与所需的电池芯的宽度相一致。
所述多个正极片的涂布区和所述多个负极片的涂布区基本上对齐并交错层叠为一层叠结构,其中,正极片和负极片的涂布区之间设有隔膜。
所述多个正极片的未涂布区均从所述层叠结构的一侧面延伸出来,并翻折延伸到所述层叠结构的顶表面上;所述多个负极片的未涂布区均从所述层叠结构的另一相对侧面延伸出来,并同样翻折延伸到所述层叠结构的所述顶表面上。
在所述层叠结构的所述顶表面处设有两个由金属片材制成的极耳,所述两个极耳分别与所述多个正极片的未涂布区和所述多个负极片的未涂布区连接。
本发明还提供了一种软包装大容量锂离子电池的制作方法,包括如下步骤:
a)提供多个平展的正极片和多个平展的负极片,所述正极片和负极片为形状基本相同的金属长型片材,并且分别沿其长度方向划分出涂布区和未涂布区,所述正极片的涂布区两面涂有正极活性材料,所述负极片的涂布区两面涂有负极活性材料;所述正极片的涂布区和所述负极片的涂布区大小基本相同,所述涂布区的延伸长度基本上与所需的电池芯的宽度相一致;
b)用隔膜包裹所述多个正极片的涂布区或者所述多个负极片的涂布区;所述隔膜为横向开口的U形,其包裹了所述涂布区的上表面和下表面以及一端部;
c)将所述多个正极片的涂布区和所述多个负极片的涂布区基本上对齐并交错层叠为一层叠结构;其中,所述多个正极片的未涂布区均从所述层叠结构的一侧面延伸出来,所述多个负极片的未涂布区均从所述层叠结构的另一相对侧面延伸出来;
d)将所述层叠结构两侧的未涂布区分别连接上极耳;
e)将所述层叠结构两侧的未涂布区连同其上连接的极耳一起翻折到所述层叠结构的顶表面上,从而形成电池芯;
f)将做好的电池芯用软包装壳体封装;在所述封装过程中包括向所述壳体内注入电解液。
对于本发明的软包装大容量锂离子电池,在正、负极片面密度一定的情况,电池容量的大小可由极片的大小及数量来决定。在本发明中,由于本发明涂布区的长度选择成基本上与所需电池芯的宽度一致而不需要对涂布区进行卷绕,因此制造简单。而且,在本发明的大容量软包装锂离子电池中,采用大面积的薄铝板、正负极极耳与正负极集流体大面积充分接触,较之于常用的镍极耳来,不仅降低了成本便于封装,也降低了电池的内阻,允许大电流的充放能力。本发明的大容量软包装锂离子电池中制作方法简单、成本低、电池内阻较小、制成的电池安全性和电性能好。
附图说明
图1为本发明电池的剖视图;
图2为图1的俯视图;
图3为图1的侧视图;
图4为正极片展示图;
图5为负极片展示图;
图6为隔膜展示图;
图7为极耳平面图。
具体实施例
参考图1至图3,本发明的软包装大容量锂离子电池包括电池芯、封装所述电池芯的软包装壳体5、容纳在壳体5内的电解液(未示出)、与电池芯连接并引出到壳体外部的极耳4。如图7所示,正、负极耳4都是在铝制薄片上敷由一条热熔胶膜4’构成。该电池芯包括多个正极片和多个负极片,该正极片可由铝箔制成,该负极片可由铜箔制成。如图4和图5分别示出的正极片和负极片,它们为形状基本相同的金属长型片材。正极片沿其长度方向划分出涂布区1(阴影区)和未涂布区(或称为集流体)1’。负极片沿其长度方向划分出涂布区2(阴影区)和未涂布区(或称为集流体)2’。集流体1’和集流体2’用于连接极耳4之用。正极片的涂布区1两面涂有正极活性材料,负极片的涂布区2两面涂有负极活性材料。如图2以及图4和图5可看出,正极片的涂布区1和负极片的涂布区2大小基本相同(允许有少量差异),并基本上平展地延伸,涂布区1和2的延伸长度基本上与所需的电池芯(图1)的宽度相一致。
多个正极片的涂布区1和多个负极片的涂布区2基本上对齐并交错层叠为一层叠结构,其中,正极片和负极片的涂布区1和2之间设有隔膜3。隔膜3在制好的电池芯中为横向开口的U形,其包裹了正极片的涂布区1或者负极片的涂布区2的上表面和下表面以及一个端部。图6是隔膜3的展开图,其在使用时可沿图中的虚线折叠成U形。
正极片的未涂布区1’从层叠结构的一个侧面延伸出来,并翻折延伸到层叠结构的顶表面上;负极片的未涂布区2’从层叠结构的另一相对侧面延伸出来,并同样翻折延伸到层叠结构的顶表面上。翻折到层叠结构的顶表面上的未涂布区1’和2’分别连接到两个极耳4,即正极耳和负极耳。
当隔膜3包裹的是正极片的涂布区1时,正极片的数量可比负极片的数量多一个,这样层叠结构的最外层极片均为正极片,从而使得该层叠结构的最上面和最下面都暴露有隔膜3。当隔膜3包裹的是负极片的涂布区2时,负极片的数量可比正极片的数量多一个,这样层叠结构的最外层极片均为负极片,从而使得该层叠结构的最上面和最下面都暴露有隔膜3。
下面介绍几个至少本发明的软包装大容量锂离子电池的应用实施例。
实施例1:制作一块100Ah软包装锂离子电池。
按图4所示,选用40片用0.012mm厚的铝箔制成的正极片。正极片中的一部分区域上两面涂有正极活性材料,以形成涂布区1。该涂布区1长为300mm、宽为230mm,包括所涂布材料在内的总厚度0.15mm。正极片中剩下的区域为未涂布区即集流体1’,其长度为140mm,宽度为230mm。如图5所示,再选用41片用0.012mm厚的铜箔制成的负极片。负极片中的一部分区域上两面涂有负极活性材料,以形成涂布区2。该负极片的涂布区2长为302mm、宽为232mm,包括所涂布材料在内的总厚度0.15mm。负极片中剩下的区域为未涂布区即集流体2’,其长度为140mm,宽度为232mm。如图6所示,再选用41片隔膜3,其长610mm宽236mm,将隔膜3沿中虚线折叠把负极片包好。然后将正极片的涂布区1和包好的负极片的涂布区2对齐,未涂布的集流体1’和2’分放左右两侧,交错地一片片叠好。在两个叠好的集流体中1’和2’上,用超声焊机焊接上或用铆接的方式分别连接上正负极极耳4。如图7所示,极耳4为铝制薄片,该铝片的厚度为0.3mm,宽100mm,总长度350mm。在该极耳4的铝片的235mm处,在其正反面沿横向都贴上一块宽30mm长110mm的热熔胶条4′。将连接好极耳4的正负集流体1’和2’相对折两次90°后,平放在叠好的极片平面上,用高温胶带固定后即成电芯。然后将电芯用铝塑复合膜制成的壳体5封装。在封装时,在壳体5上预留一个小口,用以注入电解液和开口化成,电池化成好后,将电池内部抽成近似真空再将预留小口热合封闭即成成品电池。
实施例2:制作一块200Ah软包装锂离子电池。
按图4所示,选用40片用0.012mm厚的铝箔制成的正极片。正极片中的一部分区域上两面涂有正极活性材料,以形成涂布区1。该涂布区1长为600mm、宽为230mm,包括所涂布材料在内的总厚度0.15mm。正极片中剩下的区域为未涂布区即集流体1’,其长度为140mm,宽度为230mm。如图5所示,再选用41片用0.012mm厚的铜箔制成的负极片。负极片中的一部分区域上两面涂有负极活性材料,以形成涂布区2。该负极片的涂布区2长为602mm、宽为232mm,包括所涂布材料在内的总厚度0.15mm。负极片中剩下的区域为未涂布区即集流体2’,其长度为140mm,宽度为232mm。如图6所示,再选用41片隔膜3,其长1220mm宽236mm,将隔膜3沿中虚线折叠把负极片包好。然后将正极片的涂布区1和包好的负极片的涂布区2对齐,未涂布的集流体1’和2’分放左右两侧,交错地一片片叠好。在两个叠好的集流体中1’和2’上,用超声焊机焊接上或用铆接的方式分别连接上正负极极耳4。如图7所示,极耳4为铝制薄片,该铝片的厚度为0.3mm,宽100mm,总长度350mm。在该极耳4的铝片的235mm处,在其正反面沿横向都贴上一块宽30mm长110mm的热熔胶条4′。余下的制作步骤和实施例1完全相同。
实施例3:制作一块50Ah软包装锂离子电池。
选用20片正极片、21片负极片及21片隔膜3,它们的长、宽和厚度以及其制作方法和步骤都和实施例1一样。

Claims (11)

1.一种软包装大容量锂离子电池,包括电池芯、封装所述电池芯的软包装壳体、容纳在所述壳体内的电解液、与所述电池芯连接并引出到所述壳体外部的极耳;其特征在于,
所述电池芯包括多个正极片和多个负极片,所述正极片和负极片为形状基本相同的金属长型片材,并且分别沿其长度方向划分出涂布区和未涂布区,所述正极片的涂布区两面涂有正极活性材料,所述负极片的涂布区两面涂有负极活性材料;所述正极片的涂布区和所述负极片的涂布区大小基本相同,并基本上平展地延伸,所述涂布区的延伸长度基本上与所需的电池芯的宽度相一致;
所述多个正极片的涂布区和所述多个负极片的涂布区基本上对齐并交错层叠为一层叠结构,其中,正极片和负极片的涂布区之间设有隔膜;
所述多个正极片的未涂布区均从所述层叠结构的一侧面延伸出来,并翻折延伸到所述层叠结构的顶表面上;所述多个负极片的未涂布区均从所述层叠结构的与正极片未涂布区延伸的侧面相对的侧面延伸出来,并同样翻折延伸到所述层叠结构的所述顶表面上;
在所述层叠结构的所述顶表面处设有两个由金属片材制成的极耳,所述两个极耳分别与所述多个正极片的未涂布区和所述多个负极片的未涂布区连接。
2.根据权利要求1所述的软包装大容量锂离子电池,其特征在于,所述隔膜为横向开口的U形,其包裹了所述正极片或者负极片的涂布区的上表面和下表面以及一端部。
3.根据权利要求1所述的软包装大容量锂离子电池,其特征在于,所述隔膜为“之”字形,其同时包裹了正极片和负极片的涂布区的上表面和下表面以及一端部。
4.根据权利要求2所述的软包装大容量锂离子电池,其特征在于,
当所述隔膜包裹了所述正极片的涂布区时,所述正极片的数量比负极片的数量多一个,使得在所述层叠结构的最外层极片均为正极片;或者,
当所述隔膜包裹了所述负极片的涂布区时,所述负极片的数量比正极片的数量多一个,使得在所述层叠结构的最外层极片均为负极片。
5.根据权利要求1所述的软包装大容量锂离子电池,其特征在于,所述正极片为铝箔,所述负极片为铜箔,所述极耳为铝制薄片。
6.根据权利要求5所述的软包装大容量锂离子电池,其特征在于,所述极耳平行于所述层叠结构的顶表面设置。
7.根据权利要求5所述的软包装大容量锂离子电池,其特征在于,所述极耳上设有热熔胶膜。
8.一种软包装大容量锂离子电池的制作方法,包括如下步骤:
a)提供多个平展的正极片和多个平展的负极片,所述正极片和负极片为形状基本相同的金属长型片材,并且分别沿其长度方向划分出涂布区和未涂布区,所述正极片的涂布区两面涂有正极活性材料,所述负极片的涂布区两面涂有负极活性材料;所述正极片的涂布区和所述负极片的涂布区大小基本相同,所述涂布区的延伸长度基本上与所需的电池芯的宽度相一致;
b)用隔膜包裹所述多个正极片的涂布区或者所述多个负极片的涂布区;所述隔膜为横向开口的U形,其包裹了所述涂布区的上表面和下表面以及一端部;
c)将所述多个正极片的涂布区和所述多个负极片的涂布区基本上对齐并交错层叠为一层叠结构;其中,所述多个正极片的未涂布区均从所述层叠结构的一侧面延伸出来,所述多个负极片的未涂布区均从所述层叠结构的与正极片未涂布区延伸的侧面相对的侧面延伸出来;
d)将所述层叠结构两侧的未涂布区分别连接上极耳;
e)将所述层叠结构两侧的未涂布区连同其上连接的极耳一起翻折到所述层叠结构的顶表面上,从而形成电池芯;
f)将做好的电池芯用软包装壳体封装;在所述封装过程中包括向所述壳体内注入电解液。
9.根据权利要求8所述的软包装大容量锂离子电池的制作方法,其特征在于,
当所述隔膜包裹了所述正极片的涂布区时,所述正极片的数量比负极片的数量多一个,使得在所述层叠结构的最外层极片均为正极片;或者,
当所述隔膜包裹了所述负极片的涂布区时,所述负极片的数量比正极片的数量多一个,使得在所述层叠结构的最外层极片均为负极片。
10.根据权利要求8或9所述的软包装大容量锂离子电池的制作方法,其特征在于,所述正极片为铝箔,所述负极片为铜箔,所述极耳为铝制薄片。
11.根据权利要求10所述的软包装大容量锂离子电池的制作方法,其特征在于,所述极耳上设有热熔胶膜。
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Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8815437B2 (en) * 2009-09-10 2014-08-26 Samsung Sdi Co., Ltd. Rechargeable battery
US8546007B2 (en) 2009-10-29 2013-10-01 Samsung Sdi Co., Ltd. Rechargeable battery
US8498078B2 (en) * 2009-12-09 2013-07-30 HGST Netherlands B.V. Magnetic head with flared write pole having multiple tapered regions
US8233235B2 (en) * 2009-12-09 2012-07-31 Hitachi Global Storage Technologies Netherlands B.V. PMR writer having a tapered write pole and bump layer and method of fabrication
US8553360B2 (en) * 2009-12-09 2013-10-08 HGST Netherlands B.V. Magnetic recording head having write pole with higher magnetic moment towards trailing edge
US8451560B2 (en) * 2009-12-09 2013-05-28 HGST Netherlands B.V. Magnetic head with flared write pole with multiple non-magnetic layers thereover
US8592078B2 (en) * 2010-06-11 2013-11-26 Huijun GU Lithium ion battery
CN102136603B (zh) * 2011-02-18 2014-10-08 珠海光宇电池有限公司 一种聚合物锂离子电池及其制作方法
WO2017117748A1 (zh) * 2016-01-06 2017-07-13 宁德新能源科技有限公司 二次电池
CN107482163A (zh) * 2017-07-11 2017-12-15 多氟多(焦作)新能源科技有限公司 一种电极组件单元、电极组件的制造方法及电池单体
CN109461974A (zh) * 2018-11-02 2019-03-12 中山市众旺德新能源科技有限公司 一种叠片扣式电池及其生产工艺
CN109411803B (zh) * 2018-12-05 2022-05-13 宁德时代新能源科技股份有限公司 一种电芯及电池
CN111599977A (zh) * 2020-06-03 2020-08-28 海口博澳国兴新能源科技有限公司 一种大容量锂离子电池及电动设备
CN112164770B (zh) * 2020-08-31 2021-08-24 安徽力普拉斯电源技术有限公司 一种管式正极板挤膏装置及方法
CN115172853B (zh) * 2022-08-17 2024-06-25 厦门海辰储能科技股份有限公司 电池和制备电池的方法
CN115911504B (zh) * 2023-01-05 2023-05-09 河南锂动电源有限公司 一种用于软包电池卷芯的绕卷装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6316142B1 (en) * 1999-03-31 2001-11-13 Imra America, Inc. Electrode containing a polymeric binder material, method of formation thereof and electrochemical cell
CN1540792A (zh) * 2003-10-31 2004-10-27 中信国安盟固利电源技术有限公司 一种软包装锂离子动力电池电芯的制作方法
CN1540785A (zh) * 2003-10-31 2004-10-27 中信国安盟固利电源技术有限公司 一种软包装锂离子电池极耳的制作方法
CN2686105Y (zh) * 2003-03-04 2005-03-16 河南环宇集团有限公司 一种动力电池集流连接结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6461762B1 (en) * 2000-04-20 2002-10-08 Industrial Technology Research Institute Rechargeable battery structure having a stacked structure of sequentially folded cells
JP2002075324A (ja) * 2000-09-04 2002-03-15 Mitsubishi Chemicals Corp 電 池
JP4984202B2 (ja) 2001-05-16 2012-07-25 日本電気株式会社 二次電池及びそれを搭載する携帯機器
JP2003297430A (ja) * 2002-04-03 2003-10-17 Mitsubishi Heavy Ind Ltd 二次電池の製造方法、二次電池電極の製造装置
JP2004247209A (ja) 2003-02-14 2004-09-02 Nissan Motor Co Ltd 積層型電池
JP4605389B2 (ja) * 2003-07-31 2011-01-05 日本電気株式会社 リチウムイオン二次電池
JP4785360B2 (ja) * 2004-08-31 2011-10-05 トータル ワイヤレス ソリューショオンズ リミテッド 二次電池
KR100579376B1 (ko) * 2004-10-28 2006-05-12 삼성에스디아이 주식회사 이차 전지

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6316142B1 (en) * 1999-03-31 2001-11-13 Imra America, Inc. Electrode containing a polymeric binder material, method of formation thereof and electrochemical cell
CN2686105Y (zh) * 2003-03-04 2005-03-16 河南环宇集团有限公司 一种动力电池集流连接结构
CN1540792A (zh) * 2003-10-31 2004-10-27 中信国安盟固利电源技术有限公司 一种软包装锂离子动力电池电芯的制作方法
CN1540785A (zh) * 2003-10-31 2004-10-27 中信国安盟固利电源技术有限公司 一种软包装锂离子电池极耳的制作方法

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