CN115516691A - 电极组件及其制造方法和制造系统、电池单体以及电池 - Google Patents

电极组件及其制造方法和制造系统、电池单体以及电池 Download PDF

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CN115516691A
CN115516691A CN202180007207.XA CN202180007207A CN115516691A CN 115516691 A CN115516691 A CN 115516691A CN 202180007207 A CN202180007207 A CN 202180007207A CN 115516691 A CN115516691 A CN 115516691A
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active material
pole piece
bent
straight
per unit
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郑义
康海杨
许虎
孙成栋
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Contemporary Amperex Technology Co Ltd
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Contemporary Amperex 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
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H01M10/0409—Machines for assembling batteries for cells with wound electrodes
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • 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
    • 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
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/028—Positive electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • 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)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

本申请实施例提供一种电极组件及其制造方法和制造系统、电池单体以及电池。电极组件包括负极极片和正极极片，负极极片和正极极片卷绕并形成卷绕结构，卷绕结构包括弯折区和平直区。负极极片和正极极片均包括位于弯折区的多个弯折部和位于平直区的多个平直部。正极极片中的至少一个弯折部为第一弯折部，正极极片中的至少一个平直部为连接于第一弯折部的第一平直部，第一弯折部内侧的单位面积活性物质容量小于第一平直部内侧的单位面积活性物质容量；和/或，负极极片中的至少一个弯折部为第二弯折部，负极极片中的至少一个平直部为连接于第二弯折部的第二平直部，第二弯折部外侧的单位面积活性物质容量大于第二平直部外侧的单位面积活性物质容量。

Description

PCT国内申请，说明书已公开。

Claims (20)

  1. PCT国内申请，权利要求书已公开。
CN202180007207.XA 2021-04-22 2021-04-22 电极组件及其制造方法和制造系统、电池单体以及电池 Pending CN115516691A (zh)

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PCT/CN2021/088914 WO2022222092A1 (zh) 2021-04-22 2021-04-22 电极组件及其制造方法和制造系统、电池单体以及电池

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CN115516691A true CN115516691A (zh) 2022-12-23

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US (1) US20220367921A1 (zh)
EP (1) EP4102591A4 (zh)
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WO (1) WO2022222092A1 (zh)

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JP2002260673A (ja) * 2001-03-06 2002-09-13 Toshiba Battery Co Ltd リチウム二次電池、リチウム二次電池用電極の製造方法及びリチウム二次電池の製造方法
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JP2012174579A (ja) * 2011-02-23 2012-09-10 Denso Corp 捲回型電池、その製造方法および製造装置
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JP2012252961A (ja) * 2011-06-06 2012-12-20 Hitachi Ltd リチウムイオン二次電池
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Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002008709A (ja) * 2000-06-23 2002-01-11 Nec Mobile Energy Kk 巻回型電池
JP2002260673A (ja) * 2001-03-06 2002-09-13 Toshiba Battery Co Ltd リチウム二次電池、リチウム二次電池用電極の製造方法及びリチウム二次電池の製造方法
KR20060010656A (ko) * 2004-07-28 2006-02-02 삼성에스디아이 주식회사 권취형 전극 조립체 및 이를 구비하는 리튬 이차 전지
US20100015492A1 (en) * 2006-06-27 2010-01-21 Yukihisa Katayama Tubular fuel cell and production method thereof
CN101150185A (zh) * 2006-09-19 2008-03-26 深圳市比克电池有限公司 一种卷绕式锂二次电池
CN102077392A (zh) * 2009-01-26 2011-05-25 丰田自动车株式会社 锂二次电池用正极及其利用
US20110195287A1 (en) * 2010-02-10 2011-08-11 Sanyo Electric Co., Ltd. Prismatic sealed secondary cell and method of manufacturing the same
JP2011192505A (ja) * 2010-03-15 2011-09-29 Panasonic Corp 非水電解質二次電池
JP2012174579A (ja) * 2011-02-23 2012-09-10 Denso Corp 捲回型電池、その製造方法および製造装置
US20120237819A1 (en) * 2011-03-16 2012-09-20 Chang-Bum Ahn Electrode assembly and secondary battery using the same
JP2012252961A (ja) * 2011-06-06 2012-12-20 Hitachi Ltd リチウムイオン二次電池
JP2015125832A (ja) * 2013-12-25 2015-07-06 トヨタ自動車株式会社 二次電池用電極の製造方法
JP2016207576A (ja) * 2015-04-27 2016-12-08 株式会社日本自動車部品総合研究所 非水電解液二次電池
CN205564871U (zh) * 2016-01-19 2016-09-07 宁德新能源科技有限公司 正极极片及卷绕式电芯
CN105958124A (zh) * 2016-07-21 2016-09-21 东莞新能源科技有限公司 一种锂离子电池及其制备方法
CN111244388A (zh) * 2018-07-13 2020-06-05 宁德时代新能源科技股份有限公司 极片、极片的制造方法以及二次电池
CN208955106U (zh) * 2018-10-17 2019-06-07 宁德时代新能源科技股份有限公司 二次电池及其电极构件
WO2020226320A1 (ko) * 2019-05-03 2020-11-12 주식회사 엘지화학 전극조립체 및 그의 제조방법
CN111180664A (zh) * 2019-06-28 2020-05-19 宁德时代新能源科技股份有限公司 一种电极极片和电化学装置

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US20220367921A1 (en) 2022-11-17
EP4102591A1 (en) 2022-12-14
WO2022222092A1 (zh) 2022-10-27

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