WO2024096581A1 - 전극 조립체 - Google Patents
전극 조립체 Download PDFInfo
- Publication number
- WO2024096581A1 WO2024096581A1 PCT/KR2023/017286 KR2023017286W WO2024096581A1 WO 2024096581 A1 WO2024096581 A1 WO 2024096581A1 KR 2023017286 W KR2023017286 W KR 2023017286W WO 2024096581 A1 WO2024096581 A1 WO 2024096581A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cathode
- anode
- electrode assembly
- disposed
- outer end
- 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.)
- Ceased
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Classifications
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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
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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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
- 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
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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
- 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
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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
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
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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
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/595—Tapes
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- 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
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- 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
Definitions
- the present invention relates to an electrode assembly having a wound structure, and specifically, to an electrode assembly for improving the problem of cracks or disconnections in the cathode electrode by relieving the stress generated in the cathode electrode facing the outer end of the anode. It's about.
- Batteries that store electrical energy can generally be divided into primary batteries and secondary batteries.
- Primary batteries are disposable consumable batteries, while secondary batteries are rechargeable batteries manufactured using materials in which oxidation and reduction processes between current and materials can be repeated.
- lithium secondary batteries are generally manufactured by mounting an electrode assembly in which a cathode, separator, and anode are stacked in a case, and lithium ions are transferred from the lithium metal oxide of the anode to the cathode. As the process of intercalation and deintercalation is repeated, charging and discharging of the lithium secondary battery progresses.
- the electrode assembly generally consists of a plurality of unit cells in which a cathode, a separator, and an anode cut to a predetermined size are stacked in a predetermined order, or individual anodes/separators/cathode are repeatedly stacked to form an electrode assembly. And this electrode assembly is accommodated in a case such as a cylindrical can or a square pouch.
- a winding type is manufactured by laminating a separator between the cathode and the anode and then winding it, cutting the cathode and anode to have the required width and length, and then cutting the cathode and the anode into the cathode and the separator.
- a laminated type manufactured by stacking the anodes repeatedly, and a stack-and-fold type manufactured by placing unit cells side by side on a folding separator and then folding them starting from one side, etc. are known.
- the wound type (jelly roll type) electrode assembly is manufactured by fixing the first separator to the core and sequentially inserting the cathode, second separator, and anode while the core rotates (in some cases, the order of insertion of the separator, cathode, and anode) may vary).
- the cathode electrode is used for charging.
- its thickness usually increases by about 10 to 20%.
- the outer diameter of the jelly roll increases, and the circumference of the outermost cathode increases, causing the copper current collector to be stretched.
- the cathode electrode facing the step at the tip of the anode electrode is stretched at the cathode end when expanded.
- the purpose of the present invention is to provide an electrode assembly to improve the problem of cracks or disconnections in the cathode electrode by relieving the stress generated in the cathode electrode facing the outer end of the anode in order to solve the above conventional problems. There is.
- the electrode assembly according to an embodiment of the present invention has a structure in which an anode, a separator, and a cathode are wound in a stacked state, and includes a central hole in the center, and an outer end of the cathode is an outer end of the anode with respect to the central hole. It is disposed on the outer side, the positive electrode includes a positive electrode current collector and a positive electrode slurry applied on the positive electrode current collector, and the negative electrode includes a negative electrode current collector, a negative electrode slurry applied on the negative electrode current collector, and a positive electrode slurry applied on the negative electrode current collector. It includes a cathode tab disposed at, wherein the cathode tab may be disposed where an imaginary line passing through an outer end of the anode and the center point of the central hole passes.
- the cathode tab includes an outer cathode tab disposed outside the outer end of the anode with respect to the center hole and an inner cathode tab disposed inside the outer end of the anode with respect to the center hole, and the outer cathode A tab may be placed where the imaginary line passes.
- the negative electrode current collector may include a lower surface that faces the direction of the central hole and an upper surface that is formed opposite to the lower surface.
- the cathode slurry is applied to the upper and lower surfaces facing the outer end of the anode up to a preset length in the direction from the outer end of the anode to the outer end of the cathode, and from a preset length from the outer end of the anode.
- the cathode slurry may not be applied to the outer end of the cathode.
- the outer cathode tab may be disposed at a point where the cathode slurry is not applied to both the upper and lower surfaces.
- the outer cathode tab may be disposed on the upper surface, and a first protective tape may be attached to the lower surface corresponding to the surface on which the outer cathode tab is disposed.
- a second protective tape may be attached to the upper surface facing the lower surface to which the first protective tape is attached.
- a separator may be disposed between the first protective tape and the second protective tape.
- the first protective tape may be formed to be longer than the outer negative electrode tab.
- the first protective tape may be longer than or equal to the second protective tape.
- the outer negative electrode tab may be disposed on the lower surface, and a third protective tape may be attached to the upper surface corresponding to the surface on which the outer negative electrode tab is disposed.
- a second protective tape may be attached to the upper surface facing the lower surface to which the outer negative electrode tab is attached, and a separator may be disposed between the outer negative electrode tab and the second protective tape.
- Figure 1 is a diagram illustrating a conventional electrode assembly in which the anode and cathode are wound, omitting the separators.
- Figure 2 is a plan view showing the end portions of the anode and cathode in a conventional electrode assembly.
- Figure 3 is a diagram illustrating the electrode assembly according to Example 1 of the present invention, with the separators omitted and the anode and cathode wound.
- Figure 4 is a plan view showing the end portions of the anode and cathode in the electrode assembly according to Example 1 of the present invention.
- Figure 5 is a diagram illustrating the anode and cathode wound in the electrode assembly according to Example 2 of the present invention, with the separators omitted.
- Figure 6 is a plan view showing the end portions of the anode and cathode in the electrode assembly according to Example 2 of the present invention.
- Figure 1 is a diagram showing the anode and cathode wound in a conventional electrode assembly without the separators
- Figure 2 is a plan view showing the end portions of the anode and cathode in a conventional electrode assembly.
- Figure 3 is a view showing the anode and cathode wound in the electrode assembly according to Example 1 of the present invention, omitting the separators
- Figure 4 is a view showing the ends of the anode and cathode in the electrode assembly according to Example 1 of the present invention. This is a floor plan showing the parts.
- the electrode assembly 1 may include an anode 10, a separator 40, a cathode 20, and a central hole 50.
- the anode 10, separator 40, and cathode 20 of the electrode assembly 1 may have a structure in which they are wound in a stacked state.
- a central hole 50 may be formed in the center of the electrode assembly 1.
- the positive electrode 10 may include a positive electrode current collector 11 and a positive electrode slurry 12.
- the outer end 13 of the anode 10 may be located inside the outer end 23 of the cathode 20.
- the anode 10 may be coated with the anode slurry 12 on both sides up to the outer end 13.
- the negative electrode 20 may include a negative electrode current collector 21, a negative electrode slurry 22, and a negative electrode tab 24.
- the outer end 23 of the cathode 20 may be disposed outside the outer end 13 of the anode 10 with respect to the central hole 50.
- the central hole 50 may be formed due to a structure in which the cathode 20, the anode 10, and the separator 40 are wound.
- a center point 51 may be formed at the center of the center hole 50.
- the cathode tab 24 may be placed where an imaginary line 60 passing through the outer end 13 of the anode 10 and the center point 51 of the center hole 50 passes.
- the cathode tab 24 may include an outer cathode tab 241 and an inner cathode tab 242.
- the cathode tab 24 may be disposed where the imaginary line 60 passes to support the cathode 20.
- the outer cathode tab 241 may be disposed outside the outer end 13 of the anode 10 with respect to the central hole 50.
- the outer cathode tab 241 may be placed where the virtual line 60 passes.
- the cathode 20 is elongated and thus one more layer of the cathode 20 can be created at the outermost layer.
- the inner cathode tab 242 may be disposed inside the outer end 13 of the anode 10 with respect to the central hole 50.
- the inner cathode tab 242 may be disposed on the cathode 20 facing the central hole 50.
- the negative electrode current collector 21 may include an upper surface 211 and a lower surface 212.
- the lower surface 212 of the negative electrode current collector 21 may be formed to face the central hole 50.
- the upper surface 211 of the negative electrode current collector 21 may be formed on the opposite surface of the lower surface 212. Both the upper surface 211 and the lower surface 212 of the negative electrode current collector 21 may be formed to be parallel.
- the upper surface 211 and the lower surface 212 of the negative electrode current collector 21 facing the outer end 13 of the positive electrode 10 are formed from the outer end 13 of the positive electrode 10 to the outer end of the negative electrode 20 (
- the cathode slurry 22 may be applied up to a preset length in the direction 23). There is no need to apply the cathode slurry 22 to the upper surface 211 and the lower surface 212 corresponding to the portion without the anode 10.
- the upper and lower surfaces 211 and 212 facing the outer end 13 of the positive electrode 10 have the outer end 23 of the negative electrode 20 after a preset length from the outer end 13 of the positive electrode 10.
- the cathode slurry 12 may not be applied until.
- the outer cathode tab 241 may be disposed at a point where the cathode slurry 22 is not applied to both the upper surface 211 and the lower surface 212.
- the outer cathode tab 241 may be disposed on the upper surface 211.
- the electrode assembly 1 may further include a protective tape 30.
- a first protective tape 31 and a second protective tape 32 may be attached to the negative electrode current collector 21 .
- the first protective tape 31 may be attached to the lower surface 212 corresponding to the surface on which the outer negative electrode tab 241 is disposed.
- the first protective tape 31 may be formed to be longer than the outer cathode tab 241.
- the first protective tape 31 can protect the portion protruding from the surface of the outer cathode tab 241 as it is disposed on the cathode 20.
- the second protective tape 32 may be attached to the upper surface 211 facing the lower surface 212 to which the first protective tape 31 is attached.
- the second protective tape 32 may be attached to the upper surface 211 corresponding to the point where the negative electrode slurry 22 is applied to the lower surface 212.
- the second protective tape 32 may protect the upper surface 211 of the cathode 20 on which the cathode slurry 22 is not applied.
- a separator 40 may be disposed between the first protective tape 31 and the second protective tape 32.
- Embodiment 1 of the present invention as the outer cathode tab 241 is disposed on the virtual line 60 passing between the center point 51 of the center hole 50 and the outer end 13 of the anode 10, the electrode When charging the assembly 1, stress is concentrated on the cathode 20 facing the outer end 13 of the anode 10 due to expansion of the cathode electrode, thereby solving the problem of cracks in which the cathode 20 is damaged. That is, when the outer cathode tab 241 is disposed on the virtual line 60, the gap between the case 2 of the electrode assembly 1 and the outer end 23 of the cathode 20 becomes narrow.
- the degree to which the cathode 20 expands decreases as compared to before as the gap becomes narrower, and thus the degree to which stretching occurs also decreases.
- This has the effect of reducing the degree to which the thickness of the cathode 20 is reduced. Since the degree to which the thickness of the cathode 20 decreases is reduced, even if the same stress is concentrated on the cathode 20, the risk of cracking the cathode 20 is naturally reduced compared to before, thereby preventing damage to the cathode 20.
- Figure 5 is a view showing the anode and cathode wound in the electrode assembly according to Example 2 of the present invention, omitting the separators
- Figure 6 is a view showing the ends of the anode and cathode in the electrode assembly according to Example 2 of the present invention. This is a floor plan showing the parts.
- Embodiment 2 of the present invention may differ from Embodiment 1 in that the position of the outer cathode tab 241 is different and a third protective tape 33 may be included. Contents in common with Example 1 will be omitted as much as possible and Example 2 will be described focusing on the differences.
- the outer cathode tab 241 may be disposed on the lower surface 212.
- the electrode assembly 1 may further include a third protective tape 33.
- the second protective tape 32 may be attached to the upper surface 211 facing the lower surface 212 to which the outer negative tab 241 is attached.
- a separator 40 may be disposed between the outer cathode tab 241 and the second protective tape 32.
- the outer cathode tab 241 is disposed on an imaginary line 60 passing through the center point 51 of the center hole 50 and the outer end 13 of the anode 10, and the cathode ( It is disposed on the lower surface 212 of the electrode assembly 1, as in Example 1 of the present invention, and the stress resulting from expansion of the cathode 20 during charging/discharging of the electrode assembly 1 is concentrated on the cathode 20, causing the cathode 20 to ) can solve the crack problem that causes damage.
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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)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (12)
- 양극, 분리막 및 음극이 적층된 상태로 권취된 구조를 가지며, 가운데 중심홀을 포함하는 전극 조립체에 있어서,상기 음극의 외측 끝단은 상기 중심홀을 기준으로 상기 양극의 외측 끝단보다 외측에 배치되고,상기 양극은,양극 집전체; 및상기 양극 집전체 상에 도포되는 양극 슬러리를 포함하고,상기 음극은,음극 집전체;상기 음극 집전체 상에 도포되는 음극 슬러리; 및상기 음극 집전체 상에 배치되는 음극 탭을 포함하며,상기 음극 탭은 상기 양극의 외측 끝단과 상기 중심홀의 중심점을 지나는 가상의 선이 지나는 곳에 배치되는 전극 조립체.
- 제1항에 있어서,상기 음극 탭은,상기 중심홀을 기준으로 상기 양극의 외측 끝단보다 외측에 배치되는 외측 음극 탭; 및상기 중심홀을 기준으로 상기 양극의 외측 끝단보다 내측에 배치되는 내측 음극 탭을 포함하고,상기 외측 음극 탭이 상기 가상의 선이 지나는 곳에 배치되는 전극 조립체.
- 제2항에 있어서,상기 음극 집전체는,상기 중심홀 방향을 바라보는 면인 하면; 및상기 하면의 반대에 형성되는 상면을 포함하는 전극 조립체.
- 제3항에 있어서,상기 양극의 외측 끝단을 마주하고 있는 상기 상면 및 하면은,상기 양극의 외측 끝단으로부터 상기 음극의 외측 끝단 방향으로 기설정된 길이까지 상기 음극 슬러리가 도포되고,상기 양극의 외측 끝단으로부터 기설정된 길이 이후부터 상기 음극의 외측 끝단까지 상기 음극 슬러리가 미도포되는 전극 조립체.
- 제4항에 있어서,상기 외측 음극 탭은 상기 상면 및 하면에 모두 상기 음극 슬러리가 미도포되는 지점에 배치되는 전극 조립체.
- 제5항에 있어서,상기 외측 음극 탭은 상기 상면에 배치되고,상기 외측 음극 탭이 배치되는 면에 대응되는 상기 하면에 제1 보호테이프가 부착되는 전극 조립체.
- 제6항에 있어서,상기 제1 보호테이프가 부착되는 상기 하면과 마주하는 상기 상면에 제2 보호테이프가 부착되는 전극 조립체.
- 제7항에 있어서,상기 제1 보호테이프 및 상기 제2 보호테이프 사이에 분리막이 배치되는 전극 조립체.
- 제8항에 있어서,상기 제1 보호테이프는 상기 외측 음극 탭보다 더 길게 형성되는 전극 조립체.
- 제9항에 있어서,상기 제1 보호테이프는 상기 제2 보호테이프와 같거나 더 길게 형성되는 전극 조립체.
- 제5항에 있어서,상기 외측 음극 탭 은 상기 하면에 배치되고,상기 외측 음극 탭이 배치되는 면에 대응되는 상기 상면에 제3 보호테이프가 부착되는 전극 조립체.
- 제11항에 있어서,상기 외측 음극 탭이 부착되는 상기 하면과 마주하는 상기 상면에 제2 보호 테이프가 부착되고,상기 외측 음극 탭과 상기 제2 보호테이프 사이에 분리막이 배치되는 전극 조립체.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23886277.5A EP4589700A4 (en) | 2022-11-01 | 2023-11-01 | ELECTRODE ASSEMBLY |
| JP2025523552A JP7859000B2 (ja) | 2022-11-01 | 2023-11-01 | 電極組立体 |
| CN202380075031.0A CN120188291A (zh) | 2022-11-01 | 2023-11-01 | 电极组件 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2022-0144045 | 2022-11-01 | ||
| KR1020220144045A KR20240062033A (ko) | 2022-11-01 | 2022-11-01 | 전극 조립체 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024096581A1 true WO2024096581A1 (ko) | 2024-05-10 |
Family
ID=90931137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2023/017286 Ceased WO2024096581A1 (ko) | 2022-11-01 | 2023-11-01 | 전극 조립체 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4589700A4 (ko) |
| KR (1) | KR20240062033A (ko) |
| CN (1) | CN120188291A (ko) |
| WO (1) | WO2024096581A1 (ko) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240038510A (ko) * | 2022-09-16 | 2024-03-25 | 주식회사 엘지에너지솔루션 | 전극조립체 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005063680A (ja) * | 2003-08-11 | 2005-03-10 | Sanyo Electric Co Ltd | 渦巻状電極群を備えた電池 |
| US20110086254A1 (en) * | 2009-10-14 | 2011-04-14 | Eveready Battery Company, Inc. | Lithium-Iron Disulfide Cell Design |
| KR20150015253A (ko) * | 2013-07-31 | 2015-02-10 | 삼성에스디아이 주식회사 | 이차 전지 |
| JP2022137789A (ja) * | 2021-03-09 | 2022-09-22 | プライムプラネットエナジー&ソリューションズ株式会社 | 二次電池 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6325611B1 (en) * | 1998-07-10 | 2001-12-04 | Hitachi Maxell, Ltd. | Non-aqueous secondary cell |
| US20200350634A1 (en) * | 2017-11-16 | 2020-11-05 | Panasonic Intellectual Property Management Co., Ltd. | Cylindrical secondary battery |
-
2022
- 2022-11-01 KR KR1020220144045A patent/KR20240062033A/ko active Pending
-
2023
- 2023-11-01 CN CN202380075031.0A patent/CN120188291A/zh active Pending
- 2023-11-01 EP EP23886277.5A patent/EP4589700A4/en active Pending
- 2023-11-01 WO PCT/KR2023/017286 patent/WO2024096581A1/ko not_active Ceased
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| JP2005063680A (ja) * | 2003-08-11 | 2005-03-10 | Sanyo Electric Co Ltd | 渦巻状電極群を備えた電池 |
| US20110086254A1 (en) * | 2009-10-14 | 2011-04-14 | Eveready Battery Company, Inc. | Lithium-Iron Disulfide Cell Design |
| KR20150015253A (ko) * | 2013-07-31 | 2015-02-10 | 삼성에스디아이 주식회사 | 이차 전지 |
| JP2022137789A (ja) * | 2021-03-09 | 2022-09-22 | プライムプラネットエナジー&ソリューションズ株式会社 | 二次電池 |
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| Title |
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| See also references of EP4589700A4 * |
| YAO XING-YAN, PECHT MICHAEL G.: "Tab Design and Failures in Cylindrical Li-ion Batteries", IEEE ACCESS, vol. 7, 1 January 2019 (2019-01-01), pages 24082 - 24095, XP093069947, DOI: 10.1109/ACCESS.2019.2899793 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4589700A4 (en) | 2026-01-28 |
| KR20240062033A (ko) | 2024-05-08 |
| EP4589700A1 (en) | 2025-07-23 |
| JP2025534527A (ja) | 2025-10-15 |
| CN120188291A (zh) | 2025-06-20 |
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