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SE2330370A1 - Using compressive forces during battery cell manufacturing - Google Patents

Using compressive forces during battery cell manufacturing

Info

Publication number
SE2330370A1
SE2330370A1 SE2330370A SE2330370A SE2330370A1 SE 2330370 A1 SE2330370 A1 SE 2330370A1 SE 2330370 A SE2330370 A SE 2330370A SE 2330370 A SE2330370 A SE 2330370A SE 2330370 A1 SE2330370 A1 SE 2330370A1
Authority
SE
Sweden
Prior art keywords
cell
compressive force
cell stack
stack
fluid
Prior art date
Application number
SE2330370A
Inventor
Eerik Hantsoo
Ruyet Ronan Le
Simon Malmberg
Original Assignee
Novo Energy R&D 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 Novo Energy R&D Ab filed Critical Novo Energy R&D Ab
Priority to SE2330370A priority Critical patent/SE2330370A1/en
Priority to PCT/EP2024/073821 priority patent/WO2025045820A1/en
Publication of SE2330370A1 publication Critical patent/SE2330370A1/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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M10/0422—Cells or battery with cylindrical casing
    • 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
    • H01M10/0468—Compression means for stacks of electrodes and 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
    • H01M10/049—Processes for forming or storing electrodes in the battery container
    • 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
    • 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
    • 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
    • H01M10/058—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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/446—Initial charging measures
    • 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
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • 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
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the cells
    • 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
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/48—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by the material
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • 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
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like 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
    • 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
    • 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
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • 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)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Fuel Cell (AREA)
  • Secondary Cells (AREA)

Abstract

A method for manufacturing a battery cell is performed during one or more manufacturing stages comprising at least one of: electrolyte introduction, soaking, precharge, formation and aging. The method comprises: providing a substantially rigid cell can (102) having a cell stack (302) disposed therein, the cell stack comprising a plurality of sheetlike cell layers arranged in a stack-like or roll configuration; and applying a supplemental, actively controllable compressive force to the cell stack (302) directly or indirectly by one or more inner walls of the cell can (102), wherein the supplemental compressive force is applied in addition to any forces resulting from electrolyte introduction into the cell can (102), and the supplemental compressive force is applied in a uniaxial direction that is substantially normal to the sheetlike cell layers, causing the sheetlike cell layers to have a denser configuration in the uniaxial direction compared to when no supplemental compressive force is applied.

Claims (26)

What is claimed is:
1. A method for manufacturing a battery cell, the method being performed during one or more manufacturing stages comprising at least one of: electrolyte introduction, soaking, precharge, formation and aging, the method comprising: providing a substantially rigid cell can (102) having a cell stack (302) disposed therein, the cell stack (302) comprising a plurality of sheetlike cell layers arranged in a stack-like or roll configuration; and applying a supplemental, actively controllable compressive force to the cell stack (302) directly or indirectly by one or more inner Walls of the cell can (102), Wherein: the supplemental compressive force is applied in addition to any forces resulting from electrolyte (606) introduction into the cell can ( 102), and the supplemental compressive force is applied in a uniaXial direction that is substantially normal to the sheetlike cell layers, causing the sheetlike cell layers to have a denser configuration in the uniaXial direction compared to When no supplemental compressive force is applied.
2. The method of claim 1, Wherein the compressive force is uniformly distributed across the cell layer surface.
3. The method of claim 1, Wherein the supplemental compressive force is variable across the cell layer surface.
4. The method of claim 1, Wherein the compressive force is variable over time during the manufacturing stages.
5. The method of claim 1, Wherein the cell can (102) in is a prismatic cell can (102).
6. The method of claim 5, Wherein a cross section of the prismatic cell can (102) is substantially square, substantially rectangular, substantially heXagonal, or substantially octagonal.
7. The method of claim 1, Wherein the cell can is a cylindrical cell can (1702) and the cell stack comprises a roll (1704) of sheetlike cell layers.Docket No. 230065SE
8. The method of claim 7, further comprising: inserting a fluid-tight bag to form a center cylinder (1712) of the roll (1704); and Wherein applying the supplemental compressive force comprises pressurizing the fluid- tight bag to apply a radial outWards pressure onto the roll (1704).
9. The method of any one of claims 1 to 6, Wherein applying the supplemental compressive force comprises: applying external compression to one or more outer Walls of the cell can (102) to displace a surface section of the cell can (102).
10. The method of claim 9, Wherein applying external compression to one or more of the outer Walls of the cell can (102) is done by stamp tool (1202) having a compression plate (1204) that is smaller than the cell can front surface (104) and having an outline that substantially corresponds to the cell stack (302) layer.
11. The method of claim 9, Wherein the cell can (102) comprises a ductile area (110) allowing the surface section of the cell can ( 102) to translate in a direction normal to the surface section to apply the supplemental compressive force to the cell stack (302).
12. The method of claim 11, further comprising providing the ductile area (110) after construction of the cell can (102), such as by local heating of the cell can (102).
13. The method of any one of claims 1-6 or 9, Wherein the cell can (102) comprises a fleXural feature (304) on a cell can front surface (104), a cell can back surface, and/or a cell can side surface, allowing the cell can front surface ( 104) and/or cell can back surface to translate in a direction normal to the cell can front surface ( 104) and/or cell can back surface to apply the supplemental compressive force to the cell stack (302), and Wherein the fleXural feature (304) is arranged so that the supplemental compressive force is applied uniformly across a side of the cell stack (302).
14. The method of claim 13, Wherein the fleXural feature (304) comprises a corrugated section on the cell can (102).
15. The method of any one of claims 1-6 or 9-14, further comprising: Docket No. 230065SE providing a rigid element (502) between the side surface of the cell stack (302) and a respective inner wall of the cell can (102), the rigid element (502) being arranged to distribute an eXternally applied pressure evenly across the side surface of the cell stack (302).
16. The method of claim 15, wherein the rigid element (502) comprises an inner surface and an outer surface, the outer surface being arranged to define a desired final bulge shape of the cell can (102) after swelling.
17. The method of any one of claims 1 to 8, wherein the interior of the cell can ( 102) further comprises one or more fluid-tight bags (602) in communication with the environment outside the cell can ( 102), and wherein applying a supplemental compressive force to the cell stack (302) comprises: adjusting a fluid pressure inside or outside the one or more fluid-tight bags (602) to cause compression of the cell stack (302) as a result of direct or indirect contact with the inner wall of the cell can ( 102).
18. The method of claim 17, wherein the one or more fluid-tight bags (602) are included in the cell stack (302), and wherein the compression is achieved by adjusting a differential pressure between the inside of the one or more the fluid-tight bags (602) and the pressure inside the cell can ( 102).
19. The method of claim 18, further comprising: pressurizing the environment inside the cell can ( 102), outside the one or more fluid- tight bags (602), based on a state of one or more fluid-tight bags (602), to reduce a risk of the one or more fluid-tight bags (602) breaking due to a pressure difference between the inside and outside of the one or more fluid-tight bags (602).
20. The method of any one of claims 17 to 19, wherein at least one of the one or more fluid- tight bags (602) is a single bag surrounding the cell stack (302), and wherein the compression is achieved by pressurizing a volume between the fluid-tight bag (602) and the inner wall of the cell can ( 102) with a pressurized medium (604).
21. The method of claim 20, further comprising:Docket No. 230065SE releasing the pressurized medium (604) When the stack sWelling is sufficient to apply the supplemental compressive force to the cell stack (302) by the cell stack (302) touching the inner Wall of the cell can (102) through the fluid-tight bag (602).
22. The method of any one of claims l to 6, Wherein one or more sWell pads (802) are included in the cell stack (302), and Wherein applying the supplemental compressive force to the cell stack (302) is achieved by the one or more sWell pads (802) pushing a cell stack (302) layer against one or more of the inner Walls of the cell can (102), directly or indirectly.
23. The method of any one of claims l to 6, further comprising: inserting one or more electrolyte-filled bags ( 1002) into the cell stack (302), Wherein the one or more electrolyte-filled bags ( 1002) are configured to release their contents as a result of the cell stack (302) sWelling to a size at Which compression against the inner Wall of the cell can (l02) is achievable Without using the electrolyte-filled bag (l002).
24. The method of any one of claims l to 6, further comprising: placing a dissolvable or meltable shim (l l02) into the cell can (l02) together With the cell stack (302); and dissolving or melting the shim (l l02) into the electrolyte (606) as the cell stack (302) sWells.
25. The method of claim 24, Wherein the dissolvable shim (l l02) is made from one of: LiPF6 salt, frozen electrolyte (606) carbonate solvents, hydrocarbon Wax, or eXtruded polystyrene foam.
26. The method of any one of claims l to 25, Wherein the substantially rigid cell can (l02) is made from metal, plastic, or a combination thereof.
SE2330370A 2023-08-28 2023-08-28 Using compressive forces during battery cell manufacturing SE2330370A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2330370A SE2330370A1 (en) 2023-08-28 2023-08-28 Using compressive forces during battery cell manufacturing
PCT/EP2024/073821 WO2025045820A1 (en) 2023-08-28 2024-08-26 Method for manufacturing a battery cell using compressive forces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2330370A SE2330370A1 (en) 2023-08-28 2023-08-28 Using compressive forces during battery cell manufacturing

Publications (1)

Publication Number Publication Date
SE2330370A1 true SE2330370A1 (en) 2025-03-01

Family

ID=92593435

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2330370A SE2330370A1 (en) 2023-08-28 2023-08-28 Using compressive forces during battery cell manufacturing

Country Status (2)

Country Link
SE (1) SE2330370A1 (en)
WO (1) WO2025045820A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150295208A1 (en) * 2014-04-09 2015-10-15 Robert Bosch Gmbh Electrical energy stores, and method for operating an electrical energy store
EP4167330A1 (en) * 2020-06-15 2023-04-19 LG Energy Solution, Ltd. Secondary battery and method for manufacturing same
US20230163389A1 (en) * 2021-07-15 2023-05-25 Enevate Corporation Method and system for formation of cylindrical and prismatic can cells

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6414731B2 (en) * 2013-10-01 2018-10-31 株式会社Ｇｓユアサ Power storage element and power storage device
US12199246B2 (en) * 2017-06-15 2025-01-14 A123 Systems Llc Stacked prismatic architecture for electrochemical cell
KR102740245B1 (en) * 2018-11-05 2024-12-06 주식회사 엘지에너지솔루션 Gas remover for manufacturing battery and battery manufacturing method using the same
US20210151815A1 (en) * 2019-11-19 2021-05-20 Sion Power Corporation Electrochemical cell stacks, and associated components

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150295208A1 (en) * 2014-04-09 2015-10-15 Robert Bosch Gmbh Electrical energy stores, and method for operating an electrical energy store
EP4167330A1 (en) * 2020-06-15 2023-04-19 LG Energy Solution, Ltd. Secondary battery and method for manufacturing same
US20230163389A1 (en) * 2021-07-15 2023-05-25 Enevate Corporation Method and system for formation of cylindrical and prismatic can cells

Also Published As

Publication number Publication date
WO2025045820A1 (en) 2025-03-06

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