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SE547130C2 - A method of manufacturing a secondary cell electrode - Google Patents

A method of manufacturing a secondary cell electrode

Info

Publication number
SE547130C2
SE547130C2 SE2251440A SE2251440A SE547130C2 SE 547130 C2 SE547130 C2 SE 547130C2 SE 2251440 A SE2251440 A SE 2251440A SE 2251440 A SE2251440 A SE 2251440A SE 547130 C2 SE547130 C2 SE 547130C2
Authority
SE
Sweden
Prior art keywords
ttt
conductive foil
metal sheet
tttt
exposed part
Prior art date
Application number
SE2251440A
Other languages
Swedish (sv)
Other versions
SE2251440A1 (en
Inventor
Christopher John Cook
Original Assignee
Northvolt Ab
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 Northvolt Ab filed Critical Northvolt Ab
Priority to SE2251440A priority Critical patent/SE547130C2/en
Priority to PCT/EP2023/080380 priority patent/WO2024120703A1/en
Publication of SE2251440A1 publication Critical patent/SE2251440A1/en
Publication of SE547130C2 publication Critical patent/SE547130C2/en

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • 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
    • H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
    • 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
    • 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
    • H01M10/058—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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • 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
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Catalysts (AREA)
  • Secondary Cells (AREA)

Abstract

The present disclosure relates to methods of making electrodes (1) for secondary cells (2), electrodes made by these methods, as well as methods of making secondary cells (2) and cells made by these methods. The methods involve covering part of a conductive foil (4) with an electrode coating (41) so that the conductive foil comprises a coated part and an exposed part (43). A metal sheet (20) is then welded to at least part of the exposed part.

Claims (21)

ta b-less secondary cell__ï§_L;§
1. A method of manufacturing the method comprising: (a) covering part of a conductive foil __With an electrode coatinguígíl '_i_.~ so that the conductive foil comprises a coated part and an exposed part :___extending 3_f=___of the coated part from an edge “__of the conductive foil to an edge r across a length of the conductive foil; and \\ (b) welding a metal sheet; __to at least part of the exposed part such that the metal sheet extends across at least 50% of the length of the conductive foilfi. ~««««««««««««««-wherein the conductive foil, the electrode coating and the metal sheet form " 'electrode__='“ s' t.._.=- _ :.« .fl- _-:~.'~ .vt . ._ . z-.w 5:a: §§:~s_?:_.:.ï:_ï~>f:\§. ï-ü-:ïciï LSK? :ïïàtazzš \\ .== welded to the exposed “x
2. The method of claim 1, wherein the metal sheet» extends across substantially the entire length of the conductive foil »tccccw '
3. The method of claim 1 or claim 2, wherein the metal sheetgf; .~_ welded to the exposed part f: .vextends continuously across the exposed part.
4. The method of claim 1 or claim 2, wherein the metal sheet_¿ _= comprises a plurality of sections lmand step (b) comprises welding each of the plurality of sections to the exposed part» gl, spaced apart from one another.
5. The method of any of claims 1 to 4, further comprising forming one or more notchesj; _1_ in the exposed part to form a plurality of flapsgjg
6. The method of claim 5, wherein forming one or more notches j' exposed partgíg " g to form a plurality of flaps occurs after step (b).
7. The method of any of claims 1 to 6, wherein the metal sheet is formed from a metal material having an electrical conductivity of at least 1 x1O6 S m'
8. The method of any of claims 1 to 7, wherein the metal comprises one or more of: copper, aluminium, nickel and stainless steel. :t . . _ :_ Itt .tt t: . t? .ttt _. .. . . _.. _..a.. . ...i t .-. .tt .t. . t. t .tI .tt «. .t.t. *I .Rätt .t ttt. .t i. . .ti .-t. . t. .tt .<1 .t ' tt t. . . t.. .lt.ttt.tt.. t... .ttt.t..t_t\.t\_.tt.tt .t.t.t t.t t. .t.-..t.t.tt.t. t- .t...t.- t.ttt.. tttt.. .t .t.~ t» .t.._t.-ttt...tt..,t _.. .~:; ,... ~. _.. g . .tt .ä .t. _ t ._. t. 4:. .t t.. .,..tt .tI .tt ...tt , ...z i , ___ _~._.\ tt.. . .. .t . t.'t _ t: _.. t' .\ t? t .tt .- \.~ tttta.. \.lt _ .... t. tt. t~.t.ttt.ttt.t . .tt\.lt.t .tt.tt~.\.; t.t.~ ._ tt.. .tt-t. .tt t.t t.~t wtty t.~t fit \ t ~tt t t ~ t t -« t'~l«t - i' t-t~ i- t =.~t.-tt'~t-.-t.«< t t »t .J ~t -t t.-t.~t t-t t* t l.~t.-tt'~t«-.-t.«t' t - tttft t i- - tt.- t I-.ttttfl - ä 41.» tt- -ttt _ t. _t .-t t.. _ t.. ._ t.t t t.. .. t t.. .ltt..t..t.t t.t ... .l _ t tt.t t.. t..t..t..t.-t t. . .ltt..t_.t.t t.t ... .l _ t.-t,- t.. ._ .t... .t.t t.t. .__-t tt. t.t.- t t.-t . t t . . . t t t .t. _ _ __ . . . _. . t.. . t,_t_..._.._ _.t* . _.._. t; ._.,_..t. t t t t . ttttt ...tt..t .tt t-t.t.-t\~ t .t.~t t~-t-. .-tt~ t -ttt .t-x -\-~. t __ t..lt t .t t .w t - .tc- . .t -\-\ . t.t.. t... .lt.-t.tt.-t.tt.. tt_..t t.tt.._. . .. .t) ttt.tt.tttt, t.t t tt.t. .lt t.t t .tttt tttt. .l t...- _. .t. .l_ _ t_t.. .-t .l t' It....t\ .-¿I,-_ ¿t-§¿-¿ ¿ 1 :1 än. t..1\.\.\..\. \\ .~' _..\ .__ . :_.¿ :_ . _., ;.;.. _.. _. _.._.. .._.._..~ _.. . . _.. °' w. t .,..;. _. 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H. . _ . . ___... . _. .« H t a _. _ e s S flw “_ _ . u _ _» S ... _ t _ .__ _ . . . __ _. e g ._ ._ _ h I I ._ _ ... _ _ _. _. \ _ __. e _ _ _ a S a .__ ... _ _ T _ ... _ h n .._ _ T x ._ _ _ ..._ _\_ .._ _ ... _ .I h _... . t a t ..._ _ ._ x.. _... _. _ å.. ._ _ _. . _. t. _ ... . _ s t ... e e e ...ß .. ä.. .._ .. .I w _. _. ... _. ._ m I m ___. _ _ ..._ _ _ _ . r m __... ...._ ...à t u... _. ...ï ... ._ _. ...SN p n . _. _. .._“ .A . __? __.. . . _. . u _ ._ .“ e a _ ._\_ ... .. . _ ...à m _ H ....._ e \. .Nm _.. Q. _ _ .._ _. m ... ....H n ...I n V. _ ___.. _ __ ._ ._.,_ _... O m _ _. . x.. t O t _. .._ k.. _ ___. ._ _ “... C _ M ._ ._.\~. : t c tfflïšfštšïft The tab-less secondary cell ' w, further comprising a casing housing the first and second electrodes, wherein the .. \ ašwzfršxïï' end platef and optionally the _çï___end platemíg; of any of claims wherein The tab-less secondary cell__ _.~_ further comprises a separator positioned between the the electrode roll assembly__§¿_ first and second electrodes. 21
SE2251440A 2022-12-09 2022-12-09 A method of manufacturing a secondary cell electrode SE547130C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2251440A SE547130C2 (en) 2022-12-09 2022-12-09 A method of manufacturing a secondary cell electrode
PCT/EP2023/080380 WO2024120703A1 (en) 2022-12-09 2023-10-31 A method of manufacturing a secondary cell electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2251440A SE547130C2 (en) 2022-12-09 2022-12-09 A method of manufacturing a secondary cell electrode

Publications (2)

Publication Number Publication Date
SE2251440A1 SE2251440A1 (en) 2024-06-10
SE547130C2 true SE547130C2 (en) 2025-04-29

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Publication number Priority date Publication date Assignee Title
JPH03201367A (en) * 1989-12-27 1991-09-03 Toshiba Battery Co Ltd Manufacture of paste type electrode
EP0917221A1 (en) * 1997-11-18 1999-05-19 SANYO ELECTRIC Co., Ltd. Cylindrical alkaline storage battery and manufacturing method of the same
US20040048147A1 (en) * 2002-09-10 2004-03-11 Matsusjota Electric Industrial Co., Ltd Rechargeable battery and manufacturing method thereof
US20090233177A1 (en) * 2006-06-16 2009-09-17 Hideaki Fujita Nonaqueous electrolyte secondary battery

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