JP6739522B2 - 蓄電素子 - Google Patents
蓄電素子 Download PDFInfo
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- JP6739522B2 JP6739522B2 JP2018514260A JP2018514260A JP6739522B2 JP 6739522 B2 JP6739522 B2 JP 6739522B2 JP 2018514260 A JP2018514260 A JP 2018514260A JP 2018514260 A JP2018514260 A JP 2018514260A JP 6739522 B2 JP6739522 B2 JP 6739522B2
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- 238000003860 storage Methods 0.000 title claims description 86
- 230000005611 electricity Effects 0.000 claims description 43
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- 230000033228 biological regulation Effects 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 description 27
- 125000006850 spacer group Chemical group 0.000 description 25
- 230000004048 modification Effects 0.000 description 23
- 238000012986 modification Methods 0.000 description 23
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- 238000010248 power generation Methods 0.000 description 13
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 239000008151 electrolyte solution Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- -1 polypropylene Polymers 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000011149 active material Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000007773 negative electrode material Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 239000007774 positive electrode material Substances 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 239000011255 nonaqueous electrolyte Substances 0.000 description 4
- 229920000069 polyphenylene sulfide Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910011157 LiMBO Inorganic materials 0.000 description 1
- 229910015118 LiMO Inorganic materials 0.000 description 1
- 229910013275 LiMPO Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910021469 graphitizable carbon Inorganic materials 0.000 description 1
- JWZCKIBZGMIRSW-UHFFFAOYSA-N lead lithium Chemical compound [Li].[Pb] JWZCKIBZGMIRSW-UHFFFAOYSA-N 0.000 description 1
- 235000013490 limbo Nutrition 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 1
- UIDWHMKSOZZDAV-UHFFFAOYSA-N lithium tin Chemical compound [Li].[Sn] UIDWHMKSOZZDAV-UHFFFAOYSA-N 0.000 description 1
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910021470 non-graphitizable carbon Inorganic materials 0.000 description 1
- 229920000447 polyanionic polymer Polymers 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000002023 wood Substances 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
- H01M10/05—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
- H01M10/052—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
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
-
- 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
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- H01M50/543—Terminals
- H01M50/562—Terminals 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
-
- 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
-
- 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
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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)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Secondary Cells (AREA)
Description
図10は、実施の形態の変形例1に係る凹部164の平面視における形状を示す図である。なお、図10は、蓋板110を、下側(Z軸方向マイナス側)から見た場合の図である。図11は、実施の形態の変形例1に係る下部絶縁部材120の外観を示す斜視図である。
図12は、実施の形態の変形例2に係る蓋板110の断面の概要を示す図である。なお、図12では、本変形例に係る蓋板110の断面であって、図8におけるIX−IX断面に相当する位置の断面が図示されている。図13は、実施の形態の変形例2に係る下部絶縁部材120の外観を示す斜視図である。
以上、本発明に係る蓄電素子について、実施の形態に基づいて説明した。しかしながら、本発明は、上記実施の形態に限定されるものではない。本発明の趣旨を逸脱しない限り、当業者が思いつく各種変形を上記実施の形態に施したものも、あるいは、上記説明された複数の構成要素を組み合わせて構築される形態も、本発明の範囲内に含まれる。
Claims (7)
- 電極体と、前記電極体を収容する容器と、前記電極体と電気的に接続された導電部材とを備える蓄電素子であって、
前記容器の壁部と前記導電部材との間に配置された第一絶縁部材と、
前記壁部に設けられた突部であって、前記第一絶縁部材とは反対側に突出して形成された突部とを備え、
前記第一絶縁部材は、前記壁部において前記突部の裏側に形成された凹部の一部である規制部と係合し、かつ、前記凹部の他の部分と係合しない第一係合部を有し、
前記電極体は、本体部と、前記本体部から突出して設けられた、前記導電部材と電気的に接続される接続部とを有し、
前記突部は、前記容器における、前記電極体の前記接続部の側に存在する前記壁部に設けられている
蓄電素子。 - さらに、前記壁部の、前記第一絶縁部材が配置された面とは反対側の面に配置された第二絶縁部材を備え、
前記突部は、突出方向から見た場合の形状が非円形であり、
前記第二絶縁部材は、前記突部と係合する第二係合部を有する
請求項1に記載の蓄電素子。 - 前記突部は、前記容器の外部に向けて突出して形成されており、
前記導電部材は、前記容器の内部に配置され、前記電極体と前記容器に固定された電極端子とを電気的に接続する集電体であり、
前記第一絶縁部材は、前記集電体と前記壁部の内面との間に、少なくとも一部が配置されており、
前記第二絶縁部材は、前記電極端子と前記壁部の外面との間に、少なくとも一部が配置されている
請求項2に記載の蓄電素子。 - 電極体と、前記電極体を収容する容器と、前記電極体と電気的に接続された導電部材とを備える蓄電素子であって、
前記容器の壁部と前記導電部材との間に配置された第一絶縁部材と、
前記壁部に設けられた突部であって、前記第一絶縁部材とは反対側に突出して形成された突部とを備え、
前記第一絶縁部材は、前記壁部において前記突部の裏側に形成された凹部の一部である規制部と係合する第一係合部を有し、
前記壁部は、前記突部の当該突出方向から見た場合、所定の方向に長尺状の形状であり、
前記突部は、当該突出方向から見た場合の形状が、前記所定の方向に直交する方向に長尺状である
蓄電素子。 - 電極体と、前記電極体を収容する容器と、前記電極体と電気的に接続された導電部材とを備える蓄電素子であって、
前記容器の壁部と前記導電部材との間に配置された第一絶縁部材と、
前記壁部に設けられた突部であって、前記第一絶縁部材とは反対側に突出して形成された突部とを備え、
前記第一絶縁部材は、前記壁部において前記突部の裏側に形成された凹部の一部である規制部と係合する第一係合部を有し、
前記規制部は、前記凹部の一部であって、深さ方向に交差する方向の幅が、他の部分の幅よりも大きく形成された部分である
蓄電素子。 - 電極体と、前記電極体を収容する容器と、前記電極体と電気的に接続された導電部材とを備える蓄電素子であって、
前記容器の壁部と前記導電部材との間に配置された第一絶縁部材と、
前記壁部に設けられた突部であって、前記第一絶縁部材とは反対側に突出して形成された突部とを備え、
前記第一絶縁部材は、前記壁部において前記突部の裏側に形成された凹部の一部である規制部と係合する第一係合部を有し、
前記壁部は薄肉部を有し、
前記突部は、前記薄肉部の一部に設けられている
蓄電素子。 - 前記電極体は、電極が巻回されることで形成されており、
前記突部は、前記容器における、前記電極体の巻回軸方向に存在する前記壁部において、前記電極体とは反対側に突出して形成されている
請求項1〜6のいずれか1項に記載の蓄電素子。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2015186088 | 2015-09-18 | ||
JP2015186088A JP2017059508A (ja) | 2015-09-18 | 2015-09-18 | 蓄電素子 |
PCT/EP2016/060446 WO2017045776A1 (en) | 2015-09-18 | 2016-05-10 | Energy storage device |
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Publication Number | Publication Date |
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JP2018534724A JP2018534724A (ja) | 2018-11-22 |
JP6739522B2 true JP6739522B2 (ja) | 2020-08-12 |
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JP2015186088A Pending JP2017059508A (ja) | 2015-09-18 | 2015-09-18 | 蓄電素子 |
JP2018514260A Active JP6739522B2 (ja) | 2015-09-18 | 2016-05-10 | 蓄電素子 |
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US (1) | US11088425B2 (ja) |
EP (1) | EP3347931B1 (ja) |
JP (2) | JP2017059508A (ja) |
CN (1) | CN108140756B (ja) |
WO (1) | WO2017045776A1 (ja) |
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KR102284570B1 (ko) * | 2016-09-06 | 2021-08-02 | 삼성에스디아이 주식회사 | 이차 전지 |
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JP2020149899A (ja) * | 2019-03-14 | 2020-09-17 | 株式会社Gsユアサ | 蓄電素子及び蓄電装置 |
CN111509150B (zh) * | 2020-03-20 | 2023-01-17 | 合肥国轩高科动力能源有限公司 | 一种锂离子电池的电芯结构 |
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