JP6565873B2 - 密閉型電池 - Google Patents
密閉型電池 Download PDFInfo
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- JP6565873B2 JP6565873B2 JP2016225912A JP2016225912A JP6565873B2 JP 6565873 B2 JP6565873 B2 JP 6565873B2 JP 2016225912 A JP2016225912 A JP 2016225912A JP 2016225912 A JP2016225912 A JP 2016225912A JP 6565873 B2 JP6565873 B2 JP 6565873B2
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- 238000003466 welding Methods 0.000 description 38
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- 238000007789 sealing Methods 0.000 description 17
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- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
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- 239000008151 electrolyte solution Substances 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
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- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003566 sealing material 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
- 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
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
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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
-
- 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
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- 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
- 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
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch 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
- H01M50/543—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
- 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
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Description
この発明の別の局面に従った密閉型電池は、電流遮断機構を備える密閉型電池である。密閉型電池は、電池要素を収容する外装体と、外装体内において電池要素に接続される集電端子と、外装体の外部に連通する中空部を形成する中空部材と、集電端子および中空部材の間に配置され、外装体の内圧が所定以上に上昇した時に変形することにより、電池要素と、外装体の外部に設けられた外部端子との間の電流の流れを遮断する反転板とを備える。集電端子は、中空部材に向けて突出する凸部と、凸部の周縁に沿って設けられる周縁部と、凸部を取り囲むように周縁部に設けられ、凸部の突出方向において集電端子の厚みを減じるように形成される切り欠き部とを含む。凸部は、凸部の突出方向において周縁部の厚みよりも大きい厚みを有する。反転板には、凸部が嵌合される嵌合部が設けられる。密閉型電池は、中空部材と対向する頂面を有し、凸部および嵌合部の間で、集電端子と反転板とを接合する溶接部を備える。
このように構成された密閉型電池によれば、集電端子に対する反転板の溶接位置がずれることを、より効果的に防ぐことができる。
図1は、この発明の実施の形態1における密閉型電池を示す斜視図である。図2は、図1中のII−II線上に沿った密閉型電池を示す断面図である。
凸部52の厚みA=1.0mm
周縁部53(肉厚部53p)の厚みB=0.5mm
凸部52の直径φC=2.0mm
嵌合部44の直径φD=2.2mm
凸部52および嵌合部44の隙間の大きさE=0.1mm
集電端子51における溶融部66の中心位置φF=1.8mm
反転板41における溶融部66の中心位置φG=2.4mm
反転板41における溶融部66の幅H=0.4mm
集電端子51における溶融部66の幅I=0.4mm
集電端子51における溶融部66の深さJ(図8)=0.3mm
反転板41における溶融部66の深さK(図8)=0.1mm
反転板41の厚みL=0.3mm
中空部36(溶接時の開口部)の直径=5mm
集電端子51における溶融部66の深さM(図9)=0.6mm
反転板41における溶融部66の深さN(図9)=0.4mm
上記の寸法条件のもと、図8における反転板41および集電端子51の溶け込み量が0.9mm3となり、図9における反転板41および集電端子51の溶け込み量が2.58mm3となる。この場合、溶接部61における厚み方向の溶接代を約2.5倍以上に確保することが可能となる。
図10は、この発明の実施の形態2における密閉型電池を示す断面図である。図10は、実施の形態1における図3に対応する図である。本実施の形態における密閉型電池は、実施の形態1における密閉型電池10と比較して、基本的には同様の構造を備える。以下、重複する構造については、その説明を繰り返さない。
嵌合部44の深さP=0.5mm
窪み部45の底部分の厚みQ=0.3mm
凸部52の直径φR=2.0mm
嵌合部44の直径φS=2.2mm
このように構成された、この発明の実施の形態2における密閉型電池によれば、実施の形態1に記載の効果を同様に奏することができる。また、溶接部61における厚み方向の溶接代をさらに容易に確保することができる。
Claims (1)
- 電流遮断機構を備える密閉型電池であって、
電池要素を収容する外装体と、
前記外装体内において前記電池要素に接続される集電端子と、
前記外装体の外部に連通する中空部を形成する中空部材と、
前記集電端子および前記中空部材の間に配置され、前記外装体の内圧が所定以上に上昇した時に変形することにより、前記電池要素と、前記外装体の外部に設けられた外部端子との間の電流の流れを遮断する反転板とを備え、
前記集電端子は、
前記中空部材に向けて突出する凸部と、
前記凸部の周縁に沿って設けられる周縁部と、
前記凸部を取り囲むように前記周縁部に設けられ、前記凸部の突出方向において前記集電端子の厚みを減じるように形成される切り欠き部とを含み、
前記凸部は、前記凸部の突出方向において前記周縁部の厚みよりも大きい厚みを有し、
前記反転板には、前記凸部が嵌合される嵌合部が設けられ、さらに、
前記中空部材と対向する頂面を有し、前記凸部および前記嵌合部の間で、前記集電端子と前記反転板とを接合する溶接部を備え、
前記反転板は、前記反転板が前記凸部に向かい合う側で凹形状をなし、前記反転板が前記中空部材に向かい合う側で凸形状をなす窪み部を含み、
前記嵌合部は、前記窪み部がなす凹形状により構成される、密閉型電池。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016225912A JP6565873B2 (ja) | 2016-11-21 | 2016-11-21 | 密閉型電池 |
US15/814,753 US10381631B2 (en) | 2016-11-21 | 2017-11-16 | Sealed-type battery having a current interrupt device |
CN201711136411.3A CN108091814B (zh) | 2016-11-21 | 2017-11-16 | 密闭型电池 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2016225912A JP6565873B2 (ja) | 2016-11-21 | 2016-11-21 | 密閉型電池 |
Publications (2)
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JP2018085178A JP2018085178A (ja) | 2018-05-31 |
JP6565873B2 true JP6565873B2 (ja) | 2019-08-28 |
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JP2016225912A Active JP6565873B2 (ja) | 2016-11-21 | 2016-11-21 | 密閉型電池 |
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US (1) | US10381631B2 (ja) |
JP (1) | JP6565873B2 (ja) |
CN (1) | CN108091814B (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016157749A1 (ja) * | 2015-03-27 | 2016-10-06 | 三洋電機株式会社 | 円筒形電池 |
JP7084239B2 (ja) * | 2018-07-18 | 2022-06-14 | 三洋電機株式会社 | 二次電池 |
DE102022201087A1 (de) | 2022-02-02 | 2023-08-03 | Volkswagen Aktiengesellschaft | Verfahren zur Befüllung und zum Verschließen einer Batteriezelle sowie Batteriezelle mit mindestens einem in einer Befüllöffnung angeordneten Hohlkörper, insbesondere einem Hohlniet |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150072179A1 (en) * | 2012-01-27 | 2015-03-12 | Toshiyuki Itabashi | Sealed battery |
JP5803875B2 (ja) * | 2012-10-19 | 2015-11-04 | トヨタ自動車株式会社 | 密閉型電池 |
JP6112338B2 (ja) * | 2012-10-24 | 2017-04-12 | トヨタ自動車株式会社 | 二次電池 |
JP2014139904A (ja) * | 2013-01-21 | 2014-07-31 | Hitachi Vehicle Energy Ltd | 角形二次電池 |
JP5942950B2 (ja) * | 2013-09-19 | 2016-06-29 | トヨタ自動車株式会社 | 二次電池 |
JP6246904B2 (ja) * | 2014-04-09 | 2017-12-13 | 日立オートモティブシステムズ株式会社 | 二次電池 |
JP6423250B2 (ja) * | 2014-11-14 | 2018-11-14 | 日立オートモティブシステムズ株式会社 | 二次電池 |
JP6447266B2 (ja) * | 2015-03-11 | 2019-01-09 | トヨタ自動車株式会社 | 電流遮断装置の製造方法 |
CN205621794U (zh) * | 2016-02-25 | 2016-10-05 | 比亚迪股份有限公司 | 单体电池、电池模组、动力电池及电动汽车 |
CN205645975U (zh) * | 2016-02-25 | 2016-10-12 | 比亚迪股份有限公司 | 单体电池、电池模组、动力电池及电动汽车 |
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2016
- 2016-11-21 JP JP2016225912A patent/JP6565873B2/ja active Active
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2017
- 2017-11-16 US US15/814,753 patent/US10381631B2/en active Active
- 2017-11-16 CN CN201711136411.3A patent/CN108091814B/zh active Active
Also Published As
Publication number | Publication date |
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CN108091814B (zh) | 2021-01-12 |
US20180145307A1 (en) | 2018-05-24 |
JP2018085178A (ja) | 2018-05-31 |
US10381631B2 (en) | 2019-08-13 |
CN108091814A (zh) | 2018-05-29 |
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