KR20200064752A - 양극 및 상기 양극을 포함하는 전극조립체 - Google Patents
양극 및 상기 양극을 포함하는 전극조립체 Download PDFInfo
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- KR20200064752A KR20200064752A KR1020180151258A KR20180151258A KR20200064752A KR 20200064752 A KR20200064752 A KR 20200064752A KR 1020180151258 A KR1020180151258 A KR 1020180151258A KR 20180151258 A KR20180151258 A KR 20180151258A KR 20200064752 A KR20200064752 A KR 20200064752A
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- 239000011248 coating agent Substances 0.000 claims abstract description 39
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 239000007774 positive electrode material Substances 0.000 claims abstract description 36
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 239000007773 negative electrode material Substances 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 35
- 229910052759 nickel Inorganic materials 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 10
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 1
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 239000011572 manganese Substances 0.000 claims 1
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000010406 cathode material Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 nickel-cobalt-Manganese-Aluminum Chemical compound 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000006182 cathode active material Substances 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 150000002642 lithium compounds Chemical class 0.000 description 1
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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
-
- 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
-
- H01M2/0275—
-
- H01M2/34—
-
- 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
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
- H01M50/105—Pouches or flexible bags
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/258—Modular batteries; Casings provided with means for assembling
-
- 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
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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
- H01M2200/00—Safety devices for primary or secondary 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
- 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
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- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
본 발명에 따른 전극조립체는, 양극집전체의 표면에 양극활물질이 도포된 유지부와 미도포된 무지부의 경계에서 상기 양극집전체의 표면에 절연코팅부가 부착된 양극; 음극집전체의 표면에 음극활물질이 도포된 음극; 및 상기 양극과 음극 사이에 적층되는 분리막;을 포함하고, 온도상승에 따른 분리막의 수축에 의해서 상기 양극의 절연코팅부에 상기 음극이 접촉하게 되면 상기 음극과 양극 사이로 미세전류가 흘러 충전량(SOC: State of charge)이 감소되는 것을 특징으로 한다.
Description
도 2 는 본 발명의 제1실시예에 따른 양극의 평면도.
도 3 은 본 발명의 제1실시예에 따른 양극의 측면도.
도 4 는 본 발명의 제2실시예에 따른 전극조립체 일부분의 측면도.
도 5 는 도 4 의 'A' 부분 확대도로써, 절연코팅부가 대전류의 흐름은 차단하고, 미세전류의 흐름은 허용하는 것을 표시한 도면.
도 6 은 본 발명에 따른 양극이 적층된 전극조립체에서 과충전이 발생했을 때 SOC 가 하강하여 온도가 떨어지는 것이 표시된 그래프.
11 : 양극집전체
12 : 양극활물질
13 : 절연코팅부
20 : 음극
30 : 분리막
Claims (10)
- 음극 및 분리막과 함께 적층되어 전극조립체를 구성하는 양극에 있어서,
판 모양의 양극집전체;
양극집전체의 표면에 도포되는 양극활물질; 및
상기 양극활물질이 표면에 도포된 유지부와 미도포된 무지부의 경계에 접착되는 절연코팅부;를 포함하고,
상기 절연코팅부는 순간적으로 발생하는 단락전류의 흐름은 방지하되, 과충전에 의한 미세전류의 흐름은 허용하는 것을 특징으로 하는 양극.
- 제 1 항에 있어서,
상기 절연코팅부는 전도성이 없는 폴리머와 전도성을 갖는 폴리머가 혼합되어 제조되는 것을 특징으로 하는 양극.
- 제 1 항에 있어서,
상기 양극활물질은 니켈, 코발트, 망간, 알루미늄이 혼합되어 제조된 것을 특징으로 하는 양극.
- 제 3 항에 있어서,
상기 양극활물질은 니켈, 코발트, 망간, 알루미늄 중 니켈의 함유율이 가장 높은 것을 특징으로 하는 양극.
- 제 2 항에 있어서,
상기 절연코팅부가 양극집전체의 표면에 접착됐을 때의 높이는 상기 양극집전체의 표면에 양극활물질이 도포된 높이 보다 낮거나 같은 것을 특징으로 하는 양극.
- 양극집전체의 표면에 양극활물질이 도포된 유지부와 미도포된 무지부의 경계에서 상기 양극집전체의 표면에 절연코팅부가 부착된 양극;
음극집전체의 표면에 음극활물질이 도포된 음극; 및
상기 양극과 음극 사이에 적층되는 분리막;을 포함하고,
온도상승에 따른 분리막의 수축에 의해서 상기 양극의 절연코팅부에 상기 음극이 접촉하게 되면 상기 음극과 양극 사이로 미세전류가 흘러 충전량이 감소되는 것을 특징으로 하는 전극조립체.
- 제 6 항에 있어서,
상기 양극은 분리막과 적층될 때, 절연코팅부가 상기 분리막과 맞닿은 상태로 적층이 이뤄지는 것을 특징으로 하는 전극조립체.
- 제 6 항에 있어서,
상기 음극은 양극 보다 더 긴 길이를 갖는 것을 특징으로 하는 전극조립체.
- 제 6 항 내지 제 8 항 중 어느 한 항의 전극조립체가 파우치에 내장되는 이차전지.
- 제 9 항의 이차전지 복수 개가 서로 간에 전기적으로 연결되도록 구성된 이차전지모듈.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180151258A KR102734115B1 (ko) | 2018-11-29 | 2018-11-29 | 양극 및 상기 양극을 포함하는 전극조립체 |
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| KR1020180151258A KR102734115B1 (ko) | 2018-11-29 | 2018-11-29 | 양극 및 상기 양극을 포함하는 전극조립체 |
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| Publication Number | Publication Date |
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| KR20200064752A true KR20200064752A (ko) | 2020-06-08 |
| KR102734115B1 KR102734115B1 (ko) | 2024-11-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993378A (zh) * | 2021-03-26 | 2021-06-18 | 天津市捷威动力工业有限公司 | 一种应用于锂二次电池的电极组件 |
| CN115513532A (zh) * | 2022-09-02 | 2022-12-23 | 中国第一汽车股份有限公司 | 一种防短路固态电池及其制备方法 |
| WO2023027364A1 (ko) * | 2021-08-27 | 2023-03-02 | 주식회사 엘지에너지솔루션 | 비수계 용매 치환된 수계 바인더를 포함하는 절연 조성물을 이용한 이차전지용 전극 제조방법 |
| WO2023123013A1 (zh) * | 2021-12-29 | 2023-07-06 | 宁德时代新能源科技股份有限公司 | 绝缘浆料及其制备方法、正极极片、二次电池、电池模块、电池包及用电装置 |
| WO2024101033A1 (ja) * | 2022-11-11 | 2024-05-16 | 株式会社村田製作所 | 二次電池及び二次電池の製造方法 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112993378A (zh) * | 2021-03-26 | 2021-06-18 | 天津市捷威动力工业有限公司 | 一种应用于锂二次电池的电极组件 |
| WO2023027364A1 (ko) * | 2021-08-27 | 2023-03-02 | 주식회사 엘지에너지솔루션 | 비수계 용매 치환된 수계 바인더를 포함하는 절연 조성물을 이용한 이차전지용 전극 제조방법 |
| WO2023123013A1 (zh) * | 2021-12-29 | 2023-07-06 | 宁德时代新能源科技股份有限公司 | 绝缘浆料及其制备方法、正极极片、二次电池、电池模块、电池包及用电装置 |
| CN116848725A (zh) * | 2021-12-29 | 2023-10-03 | 宁德时代新能源科技股份有限公司 | 绝缘浆料及其制备方法、正极极片、二次电池、电池模块、电池包及用电装置 |
| JP2024508065A (ja) * | 2021-12-29 | 2024-02-22 | 寧徳時代新能源科技股▲分▼有限公司 | 絶縁スラリー及びその製造方法、正極極板、二次電池、電池モジュール、電池パック及び電力消費装置 |
| JP7651675B2 (ja) | 2021-12-29 | 2025-03-26 | 香港時代新能源科技有限公司 | 絶縁スラリー及びその製造方法、正極極板、二次電池、電池モジュール、電池パック及び電力消費装置 |
| CN115513532A (zh) * | 2022-09-02 | 2022-12-23 | 中国第一汽车股份有限公司 | 一种防短路固态电池及其制备方法 |
| WO2024045688A1 (zh) * | 2022-09-02 | 2024-03-07 | 中国第一汽车股份有限公司 | 一种防短路固态电池及其制备方法 |
| WO2024101033A1 (ja) * | 2022-11-11 | 2024-05-16 | 株式会社村田製作所 | 二次電池及び二次電池の製造方法 |
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