CN113228366A - 电池及用电装置 - Google Patents

电池及用电装置 Download PDF

Info

Publication number
CN113228366A
CN113228366A CN201980086332.7A CN201980086332A CN113228366A CN 113228366 A CN113228366 A CN 113228366A CN 201980086332 A CN201980086332 A CN 201980086332A CN 113228366 A CN113228366 A CN 113228366A
Authority
CN
China
Prior art keywords
battery
tab
negative electrode
silicon
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201980086332.7A
Other languages
English (en)
Other versions
CN113228366B (zh
Inventor
段岳廷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningde Amperex Technology Ltd
Original Assignee
Ningde Amperex Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningde Amperex Technology Ltd filed Critical Ningde Amperex Technology Ltd
Publication of CN113228366A publication Critical patent/CN113228366A/zh
Application granted granted Critical
Publication of CN113228366B publication Critical patent/CN113228366B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or 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
    • H01M10/05—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
    • H01M4/13—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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • 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
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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
    • 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
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area

Landscapes

  • 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)
  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

一种电池，包括由负极极片和正极极片一起卷绕形成的卷绕单元。所述负极极片包括负极集流体及设置于所述负极集流体上的负极活性层，所述负极活性层包括硅负极材料。所述电池还包括极耳。所述极耳焊接于所述负极集流体。其中，所述硅负极材料的克容量C、初始的电池中极耳的焊接强度a及经300个循环后的电池中极耳的焊接强度b存在以下关系：当400mAh/g<C≤600mAh/g时，50％<b/a<65％；当600mAh/g<C≤800mAh/g时，65％<b/a<80％；当800mAh/g<C≤1000mAh/g时，80％<b/a<90％；当C>1000mAh/g时，b/a>90％。本申请还提供了一种用电装置，其包括所述电池。

Description

PCT国内申请，说明书已公开。

Claims (11)

  1. PCT国内申请，权利要求书已公开。
CN201980086332.7A 2019-11-22 2019-11-22 电池及用电装置 Active CN113228366B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2019/120327 WO2021097815A1 (zh) 2019-11-22 2019-11-22 电池及用电装置

Publications (2)

Publication Number Publication Date
CN113228366A true CN113228366A (zh) 2021-08-06
CN113228366B CN113228366B (zh) 2022-03-25

Family

ID=75981124

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201980086332.7A Active CN113228366B (zh) 2019-11-22 2019-11-22 电池及用电装置

Country Status (3)

Country Link
US (1) US20220271342A1 (zh)
CN (1) CN113228366B (zh)
WO (1) WO2021097815A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101593849A (zh) * 2009-06-17 2009-12-02 广州丰江电池新技术股份有限公司 一种锂电池及其制造方法
JP2017228418A (ja) * 2016-06-22 2017-12-28 プライムアースＥｖエナジー株式会社 電池の製造方法及び電池
CN207320232U (zh) * 2017-11-13 2018-05-04 深圳市比克动力电池有限公司 一种锂离子电池负极极片及锂离子电池
CN207757066U (zh) * 2017-12-21 2018-08-24 宁德新能源科技有限公司 焊接装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102073189B1 (ko) * 2013-04-04 2020-02-04 삼성에스디아이 주식회사 이차전지용 용접혼

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101593849A (zh) * 2009-06-17 2009-12-02 广州丰江电池新技术股份有限公司 一种锂电池及其制造方法
JP2017228418A (ja) * 2016-06-22 2017-12-28 プライムアースＥｖエナジー株式会社 電池の製造方法及び電池
CN207320232U (zh) * 2017-11-13 2018-05-04 深圳市比克动力电池有限公司 一种锂离子电池负极极片及锂离子电池
CN207757066U (zh) * 2017-12-21 2018-08-24 宁德新能源科技有限公司 焊接装置

Also Published As

Publication number Publication date
US20220271342A1 (en) 2022-08-25
WO2021097815A1 (zh) 2021-05-27
CN113228366B (zh) 2022-03-25

Similar Documents

Publication Publication Date Title
WO2019239988A1 (ja) 電池用電極およびその製造方法
JP6448336B2 (ja) リチウムイオン二次電池の製造方法
JP2015222725A (ja) 蓄電装置の作製方法
JP7418462B2 (ja) リチウムイオン電池、その製作方法及び充放電方式
JP2009199761A (ja) リチウムイオン電池
CN111370644B (zh) 极片及其加工方法、电芯结构、电池
JPH10308212A (ja) ２次電池用電極板処理装置
CN114583097A (zh) 极片、卷绕电芯以及电池
TW517405B (en) Nonaqueous electrolyte secondary cell and method of producing the same
EP3793016B1 (en) Battery electrode sheet and preparation method therefor, battery management method and related apparatus
JP5690579B2 (ja) リチウムイオン二次電池
CN101667635A (zh) 电极的制造方法
JP2014053134A (ja) 二次電池およびその製造方法、ならびに電池パックおよび電動車両
JP5470335B2 (ja) 捲回式二次電池
JP2000208129A (ja) リチウム二次電池
CN202019028U (zh) 锂电池的电芯及锂电池
CN113228366B (zh) 电池及用电装置
CN113036251A (zh) 三电极锂离子电池及其制备方法
CN206163634U (zh) 一种多卷芯连续卷绕的锂离子二次电池
JP2018113220A (ja) リチウムイオン二次電池の製造方法
JP2002170555A (ja) リチウム二次電池用電極の製造方法
JP2009158142A (ja) 非水電解質二次電池の充電方法
WO2021100272A1 (ja) 二次電池及びその製造方法
JP2000285954A (ja) ラミネート外装体を用いた薄型電池の製造方法
JP2001243939A (ja) 薄型二次電池、薄型二次電池用のリード端子、およびそれらの製造方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant