CN113519087A - 卷绕式电芯及电化学装置 - Google Patents

卷绕式电芯及电化学装置 Download PDF

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Publication number
CN113519087A
CN113519087A CN202080005204.8A CN202080005204A CN113519087A CN 113519087 A CN113519087 A CN 113519087A CN 202080005204 A CN202080005204 A CN 202080005204A CN 113519087 A CN113519087 A CN 113519087A
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China
Prior art keywords
section
tab
pole piece
segment
wound cell
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Pending
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CN202080005204.8A
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English (en)
Inventor
杨典
闫聪飞
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Ningde Amperex Technology Ltd
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Ningde Amperex Technology Ltd
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Publication of CN113519087A publication Critical patent/CN113519087A/zh
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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
    • H01M10/0431—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
    • 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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • 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

Abstract

卷绕式电芯(10I)及电化学装置。该卷绕式电芯(10I)包括第一极片(100)、第二极片(200)、隔离膜(300)、由第一极片(100)、第二极片(200)及隔离膜(300)所围封的中心区域(S)及厚度方向(X)。第一极片(100)、第二极片(200)及隔离膜(300)经卷绕以形成卷绕式电芯(10I)。第一极片(100)包括具有第一表面(101a)和与第一表面(101a)相对的第二表面(101b)的第一集流体(101)，第一表面(101a)相对于第二表面(101b)更靠近中心区域(S)；具有第一端(103a)和第二端(103b)的第一区段(103)，第一端(103a)为第一极片(100)的卷绕起始端；及具有第三端(105a)和第四端(105b)的平面状的第二区段(105)，第二区段(105)的第一表面(101a)设置第一极耳(111)。第二极片(200)包括第一侧(211a)设置于第二极片(200)的第二极耳(211)。第一端(103a)、第一极耳(111)和第二极耳(211)在厚度方向(X)上不重叠。该卷绕式电芯及电化学装置具有较高的空间利用率和能量密度。

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。
CN202080005204.8A 2020-03-12 2020-03-12 卷绕式电芯及电化学装置 Pending CN113519087A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/079038 WO2021179261A1 (zh) 2020-03-12 2020-03-12 卷绕式电芯及电化学装置

Publications (1)

Publication Number Publication Date
CN113519087A true CN113519087A (zh) 2021-10-19

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CN202080005204.8A Pending CN113519087A (zh) 2020-03-12 2020-03-12 卷绕式电芯及电化学装置

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US (1) US20220223922A1 (zh)
CN (1) CN113519087A (zh)
WO (1) WO2021179261A1 (zh)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106025377A (zh) * 2016-08-01 2016-10-12 东莞新能源科技有限公司 一种卷绕式电芯
CN205828556U (zh) * 2016-07-08 2016-12-21 宁德新能源科技有限公司 二次电池卷绕式电芯
CN205828578U (zh) * 2016-07-08 2016-12-21 宁德新能源科技有限公司 二次电池卷绕式电芯
CN206697567U (zh) * 2017-03-31 2017-12-01 宁德新能源科技有限公司 卷绕式电芯
CN208444906U (zh) * 2018-04-23 2019-01-29 宁德新能源科技有限公司 电芯以及电化学装置
CN110808377A (zh) * 2018-08-06 2020-02-18 宁德新能源科技有限公司 电芯、电池以及电子设备

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102157752B (zh) * 2011-03-16 2015-11-25 宁德新能源科技有限公司 具有散热性能的动力型锂离子电池

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205828556U (zh) * 2016-07-08 2016-12-21 宁德新能源科技有限公司 二次电池卷绕式电芯
CN205828578U (zh) * 2016-07-08 2016-12-21 宁德新能源科技有限公司 二次电池卷绕式电芯
CN106025377A (zh) * 2016-08-01 2016-10-12 东莞新能源科技有限公司 一种卷绕式电芯
CN206697567U (zh) * 2017-03-31 2017-12-01 宁德新能源科技有限公司 卷绕式电芯
CN208444906U (zh) * 2018-04-23 2019-01-29 宁德新能源科技有限公司 电芯以及电化学装置
CN110808377A (zh) * 2018-08-06 2020-02-18 宁德新能源科技有限公司 电芯、电池以及电子设备

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US20220223922A1 (en) 2022-07-14

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