JP6721059B2 - 二次電池 - Google Patents
二次電池 Download PDFInfo
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- JP6721059B2 JP6721059B2 JP2018561860A JP2018561860A JP6721059B2 JP 6721059 B2 JP6721059 B2 JP 6721059B2 JP 2018561860 A JP2018561860 A JP 2018561860A JP 2018561860 A JP2018561860 A JP 2018561860A JP 6721059 B2 JP6721059 B2 JP 6721059B2
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- 239000000470 constituent Substances 0.000 claims description 18
- 238000006073 displacement reaction Methods 0.000 claims description 13
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 10
- 229910001416 lithium ion Inorganic materials 0.000 claims description 10
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- 239000011230 binding agent Substances 0.000 description 9
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- 239000011255 nonaqueous electrolyte Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- -1 lithium transition metal Chemical class 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 4
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- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
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- 229910000625 lithium cobalt oxide Inorganic materials 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
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- 229910052738 indium Inorganic materials 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- 229910052745 lead Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- URIIGZKXFBNRAU-UHFFFAOYSA-N lithium;oxonickel Chemical compound [Li].[Ni]=O URIIGZKXFBNRAU-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 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 description 1
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- 229910052714 tellurium Inorganic materials 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc 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
- H01M10/04—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
- H01M10/05—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
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat 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
-
- 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
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Sealing Battery Cases Or Jackets (AREA)
Description
正極、負極および当該正極と負極との間のセパレータを含む電極構成層が積層した電極組立体、ならびに、電極組立体を包み込む外装体を有して成る二次電池であって、
電極組立体が相対的に低いレベルの組立体低面と相対的に高いレベルの組立体高面とから構成された組立体段差を有すると共に、二次電池が相対的に低いレベルの電池低面と相対的に高いレベルの電池高面とから構成された電池段差を有し、
電池低面が、組立体段差と電池段差との位置ずれをマージンとした基板配置面となっていることを特徴とする。
本発明では二次電池が提供される。本明細書でいう「二次電池」とは、充電・放電の繰り返しが可能な電池のことを指している。従って、本発明の二次電池は、その名称に過度に拘泥されるものでなく、例えば“蓄電デバイス”なども対象に含まれ得る。
本発明に係る二次電池は、正極、負極及びセパレータを含む電極構成層が積層した電極組立体を有して成る。図1(A)および1(B)には電極組立体100’を例示している。図示されるように、正極1と負極2とはセパレータ3を介して積み重なって電極構成層5を成しており、かかる電極構成層5が少なくとも1つ以上積層して電極組立体100’が構成されている。図1(A)では、電極構成層5が巻回されずに平面状に積層した平面積層構造を有している。一方、図1(B)では、電極構成層5が巻回状に巻かれた巻回積層構造を有している。二次電池ではこのような電極組立体100’が電解質(例えば非水電解質)と共に外装体に封入されている。
本発明の二次電池に係る基本的な電池製法について説明する。二次電池の製法では、正極、負極、電解液およびセパレータをそれぞれに作製・調製した後(必要に応じて市販品から調達してもよい)、それらを一体化して組み合わせることで二次電池を得ることができる。
本発明の二次電池は、その凹凸の外形設計に特徴を有している。特に、本発明は、電極組立体とそれを外装体で包み込んで得られる二次電池とで凹凸段差の位置設計が好適に図られた特徴を有している。つまり、正極、負極およびそれらの間のセパレータを含む電極構成層が積層した電極組立体と、かかる電極組立体を包み込む外装体を有して成る二次電池との間において段差位置の設計がより好適になされている。
2 負極
3 セパレータ
5 電極構成層
10 金属シート材
20 電極材層
30 電極前駆体
42 小片形
42’ 小片積層体
47 大片形
47’ 大片積層体
100 二次電池
160 電池低面
180 電池高面
190 電池段差
100’ 電極組立体
160’ 組立体低面
180’ 組立体高面
190’ 組立体段差
Claims (12)
- 正極、負極および該正極と該負極との間のセパレータを含む電極構成層が積層した電極組立体、ならびに、該電極組立体を包み込む外装体を有して成る二次電池であって、
前記電極組立体が相対的に低いレベルの組立体低面と相対的に高いレベルの組立体高面とから構成された組立体段差を有すると共に、前記二次電池が相対的に低いレベルの電池低面と相対的に高いレベルの電池高面とから構成された電池段差を有し、
前記電池低面が、前記組立体段差と前記電池段差との位置ずれをマージンとした基板配置面となっており、
前記二次電池の全体外形に切欠部が含まれ、平面視にて該切欠部の周縁ラインと前記組立体段差との差が、前記位置ずれに相当する、二次電池。 - 前記位置ずれが前記外装体に起因する、請求項1に記載の二次電池。
- 前記位置ずれの寸法が、前記外装体の厚みの1.5倍以上50倍以下となっている、請求項1または2に記載の二次電池。
- 平面視において前記切欠部の形状が矩形状である一方、前記電極組立体または前記二次電池の輪郭形状が非矩形状である、請求項1に記載の二次電池。
- 平面視において前記組立体高面の面積が前記切欠部の面積よりも小さい、請求項1に記載の二次電池。
- 平面視において前記位置ずれを成す方向の寸法を位置ずれ方向寸法とすると、前記電極組立体の輪郭形状における最大位置ずれ方向寸法と最小位置ずれ方向寸法との差よりも前記組立体高面の位置ずれ方向寸法が小さくなっている、請求項1に記載の二次電池。
- 前記電極組立体の底面と前記組立体低面とのレベル差が、前記組立体段差の段差寸法に相当する、請求項1〜6のいずれかに記載の二次電池。
- 前記位置ずれの寸法が0.5mm以上5mm以下である、請求項1〜7のいずれかに記載の二次電池。
- 前記基板配置面に配置される基板がリジッド基板またはフレキシブル基板である、請求項1〜8のいずれかに記載の二次電池。
- 前記基板配置面に配置される基板が保護回路基板である、請求項1〜9のいずれかに記載の二次電池。
- 前記正極、前記負極および前記セパレータが平面状に積層した平面積層構造を有する、請求項1〜10のいずれかに記載の二次電池。
- 前記正極および前記負極が、リチウムイオンを吸蔵放出可能な層を有する、請求項1〜11のいずれかに記載の二次電池。
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JP3611765B2 (ja) * | 1999-12-09 | 2005-01-19 | シャープ株式会社 | 二次電池及びそれを用いた電子機器 |
JP2010244725A (ja) * | 2009-04-01 | 2010-10-28 | Sony Corp | 非水電解質電池 |
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