JPWO2019093333A1 - 電池及び電池パック - Google Patents
電池及び電池パック Download PDFInfo
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- JPWO2019093333A1 JPWO2019093333A1 JP2019552814A JP2019552814A JPWO2019093333A1 JP WO2019093333 A1 JPWO2019093333 A1 JP WO2019093333A1 JP 2019552814 A JP2019552814 A JP 2019552814A JP 2019552814 A JP2019552814 A JP 2019552814A JP WO2019093333 A1 JPWO2019093333 A1 JP WO2019093333A1
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- electrode group
- electrode
- positive electrode
- negative electrode
- lid
- Prior art date
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- Granted
Links
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- 229920006259 thermoplastic polyimide Polymers 0.000 description 1
- 150000003568 thioethers Chemical class 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
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
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- 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
- 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
- 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
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
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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
- H01M50/543—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
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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
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- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
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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
- H01M50/60—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
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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
-
- 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)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Cell Separators (AREA)
- Filling, Topping-Up Batteries (AREA)
- Primary Cells (AREA)
Abstract
Description
正極は、正極集電体と、集電体の表面の一部に形成された正極活物質含有層と、を備えることができる。正極集電体は、アルミニウム箔又はアルミニウム合金箔等であり、厚さが10μm〜20μm程度である。 正極活物質含有層は、正極活物質と、任意に導電剤及び結着剤と、を含むことができる。 正極活物質としては、例えば、酸化物又は硫化物を用いることができる。例えば、正極活物質としては、これらに限定されるものではないが、リチウムイオンを吸蔵放出できる酸化物、硫化物及びポリマー等が挙げられる。また、高い正極電位を得られる観点から、正極活物質は、リチウムマンガン複合酸化物、リチウムニッケル複合酸化物、リチウムコバルト複合酸化物及びリチウム燐酸鉄等が、用いられることが好ましい。
負極は、負極集電体と、負極集電体の表面の一部に形成された負極活物質含有層と、を備えることができる。負極集電体は、アルミニウム箔、アルミニウム合金箔又は銅箔等であり、厚さが10μm〜20μm程度である。
セパレータは、例えば、ポリエチレン、ポリプロピレン、セルロース、又は、ポリフッ化ビニリデン(PVdF)を含む多孔質フィルム、又は、合成樹脂製の不織布から形成されてよい。中でも、ポリエチレン又はポリプロピレンから形成された多孔質フィルムは、一定温度において溶融し、電流を遮断することが可能であるため、安全性を向上できる。
電極群に含侵される電解液としては、例えば、非水電解質を用いることができる。非水電解質は、例えば、電解質を有機溶媒に溶解することにより調製される液状の非水電解質、又は、液状の電解質と高分子材料とを複合化したゲル状の非水電解質であってもよい。液状の非水電解質は、電解質を0.5モル/L以上2.5モル/L以下の濃度で有機溶媒に溶解したものであることが好ましい。
容器としては、図1を参照しながら説明した電池100が具備する容器1のように、金属製容器を用いることができる。
電極群は、正極活物質と負極活物質とがセパレータを介して向き合っている構造であれば、如何なる構造を採用することもできる。また、セパレータの代わりに、非水電解質である固体電解質を用いることもできる。
Claims (11)
- 正極及び負極を備える電極群と、
前記電極群を収納するとともに、高さ方向の一方側へ開口する開口部が形成される容器と、
前記容器の前記開口部を塞ぐ蓋体であって、ガス排出弁を備えるとともに、前記蓋体を貫通する注液口が形成される蓋体と、
前記蓋体の外表面に取付けられ、前記電極群に電気的に接続される一対の電極端子と、
前記容器の内部において前記蓋体と前記電極群との間に設けられるとともに、前記蓋体に対して重ねられる電極群押さえであって、前記ガス排出弁に対向する部位及び前記注液口に対向する部位に跨って前記電極群押さえを貫通する開口孔が形成される電極群押さえと、
を具備する、電池。 - 前記電極群押さえは、前記開口孔の周囲において前記電極群が位置する側へ突出する突起を備える、請求項1の電池。
- 前記突起は、前記高さ方向に交差する横方向について、前記開口孔の両側に設けられる、
請求項2の電池。 - 前記一対の電極端子は、前記高さ方向に交差する横方向について、互いに対して離れて配置され、
前記ガス排出弁、前記注液口、前記開口孔及び前記突起は、前記横方向について、前記一対の電極端子の間に配置される、
請求項2又は3の電池。 - 前記電極群押さえは、前記蓋体が位置する側から前記突起を支持する格子状のリブを備える、請求項2乃至4のいずれか1項の電池。
- 前記一対の電極端子は、前記高さ方向に交差する横方向について、互いに対して離れて配置され、
前記ガス排出弁、前記注液口及び前記開口孔は、前記横方向について、前記一対の電極端子の間に配置される、
請求項1の電池。 - 前記電極群押さえは、前記高さ方向に交差する横方向に対して前記電極群押さえの長手方向が一致する状態で配置され、
前記蓋体は、前記横方向に対して前記蓋体の長手方向が一致する状態で配置される、
請求項1乃至6のいずれか1項の電池。 - 前記電極群の前記正極は、正極集電体と、前記正極集電体の表面に担持される正極活物質含有層と、を備え、
前記電極群の前記負極は、負極集電体と、前記負極集電体の表面に担持される負極活物質含有層と、を備え、
前記正極集電体は、前記表面において前記正極活物質含有層が担持されない正極集電タブを備え、
前記負極集電体は、前記表面において前記負極活物質含有層が担持されない負極集電タブを備え、
前記正極集電タブは、前記高さ方向に交差する横方向について一方側へ、前記負極に対して突出し、
前記負極集電タブは、前記横方向について前記正極集電タブが突出する側とは反対側へ、前記正極に対して突出する、
請求項1乃至7のいずれか1項の電池。 - 請求項1乃至8のいずれか1項の電池を具備する、電池パック。
- 正極、負極、及び、セパレータを重ねてなる電極群と、
前記電極群に電気的に接続された正極端子及び負極端子を備える蓋体と、
前記電極群と前記蓋体との間に前記蓋体に近接するよう重ねて設けられる電極群押さえと、
前記電極群及び前記電極群押さえを収容する容器と、
を備え、
前記蓋体には、前記蓋体を貫通する注液口と、溝を有し肉薄に形成されているガス排出弁と、が設けられ、
前記電極群押さえは、前記注液口及び前記ガス排出弁に対応した位置に跨って開口部を有する、
電池。 - 前記電極群押さえの前記開口部の周辺には、前記電極群と対向する側に凸の突起部が設けられている、請求項10の電池。
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JP2012084525A (ja) * | 2010-10-08 | 2012-04-26 | Sb Limotive Co Ltd | 二次電池 |
JP2014072018A (ja) * | 2012-09-28 | 2014-04-21 | Sanyo Electric Co Ltd | 電池 |
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