JP7070571B2 - 円筒形電池 - Google Patents
円筒形電池 Download PDFInfo
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- JP7070571B2 JP7070571B2 JP2019530564A JP2019530564A JP7070571B2 JP 7070571 B2 JP7070571 B2 JP 7070571B2 JP 2019530564 A JP2019530564 A JP 2019530564A JP 2019530564 A JP2019530564 A JP 2019530564A JP 7070571 B2 JP7070571 B2 JP 7070571B2
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- Prior art keywords
- washer
- recess
- opening
- valve body
- battery
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- 238000007789 sealing Methods 0.000 claims description 18
- 239000008151 electrolyte solution Substances 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 37
- 239000002184 metal Substances 0.000 description 37
- 238000004519 manufacturing process Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 239000011255 nonaqueous electrolyte Substances 0.000 description 8
- 238000004080 punching Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000007769 metal material Substances 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000007665 sagging Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button cells
- H01M50/56—Cup shaped terminals
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
-
- 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
-
- 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
- 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
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
Landscapes
- 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
比較例のワッシャ82は実施例と同様に、まず、ニッケル製の金属板30の打ち抜き加工により開口部82aを形成した(図7(a))。次に、開口部82aの周囲に凹部を形成するのではなく、金属板30の全面を平坦な表面を有するプレス治具36,37を用いてプレスして平面成形した(図7(b))。最後に、開口部82aの中心から所定半径の円に沿って金属板30を打ち抜いて、外径が15.5mmの図8に示すワッシャ82を作製した。ワッシャ82の開口部82aの内径は6.4mmとした。その内径は実施例のワッシャ22の平面部22bと凹部22cの境界線22dが形成する円の直径に一致している。なお、比較例のワッシャ82の表裏の一方にはダレ83が形成され、他方にはバリ84が形成されている。上記の平面成形の工程ではダレ83やバリ84は消失しなかった。
封口体の内部端子板側に空洞を有する金型を当接させて密閉空間を形成した。その密閉空間にガス供給路を通じてガスを供給することで電池内部の圧力の上昇を模擬した電流遮断機構の作動圧の測定を行った。密閉空間の圧力を一定の速度で上昇させている間に、封口体と内部端子板の間の電気抵抗が作動圧の測定前の電気抵抗よりも1Ω上昇した時点の密閉空間の圧力を電流遮断機構の作動圧とした。実施例及び比較例ともに各20個の封口体の作動圧(MPa)を測定し、標準偏差(σ)を算出して実施例と比較例のバラツキを比較した。その結果を表1に示す。なお、作動圧の測定に用いた封口体には、ワッシャの表裏の向きがランダムに配置されている。
14 電極体
18 外装缶
20 封口体
21 端子キャップ
22 ワッシャ
22a 開口部
22b 平面部
22c 凹部
22d 境界線
23 弁体
24 インナーガスケット
25 内部端子板
Claims (5)
- 正極板及び負極板がセパレータを介して巻回された電極体と、電解液と、前記電極体及び前記電解液を収容する有底筒状の外装缶と、封口体と、を備え、
前記封口体が、端子キャップ、電流遮断機構を構成する弁体、及びそれらの間に介在する中心に開口部を有するワッシャを含み、
前記ワッシャが、その厚み方向の両端の各表面において、前記開口部の周囲に形成された凹部と、前記凹部の周囲に配置された平面部を有し、
前記ワッシャの各表面における前記凹部と前記平面部の境界線は前記厚み方向で互いに重なるように配置されている、円筒形電池。 - 前記境界線は円形状である請求項1に記載の円筒形電池。
- 前記境界線に段差が形成されている請求項1又は2に記載の円筒形電池。
- 前記凹部の厚みは一定である請求項3に記載の円筒形電池。
- 前記凹部は、前記境界線から前記開口部に向けて厚みが小さくなる傾斜部を有する請求項1又は2に記載の円筒形電池。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017140509 | 2017-07-20 | ||
JP2017140509 | 2017-07-20 | ||
PCT/JP2018/026895 WO2019017382A1 (ja) | 2017-07-20 | 2018-07-18 | 円筒形電池 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2019017382A1 JPWO2019017382A1 (ja) | 2020-05-28 |
JP7070571B2 true JP7070571B2 (ja) | 2022-05-18 |
Family
ID=65015782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019530564A Active JP7070571B2 (ja) | 2017-07-20 | 2018-07-18 | 円筒形電池 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200136097A1 (ja) |
JP (1) | JP7070571B2 (ja) |
CN (1) | CN110800132B (ja) |
WO (1) | WO2019017382A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114171858B (zh) * | 2021-12-10 | 2024-03-29 | 合肥力翔电池科技有限责任公司 | 一种圆形锂离子电池的极柱结构 |
DE102023127572B3 (de) | 2023-10-10 | 2024-05-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zum Herstellen einer Rundzelle einer Traktionsbatterie |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007018962A (ja) | 2005-07-11 | 2007-01-25 | Matsushita Electric Ind Co Ltd | 密閉型二次電池 |
JP2007027020A (ja) | 2005-07-21 | 2007-02-01 | Matsushita Electric Ind Co Ltd | 密閉型電池 |
JP2008282679A (ja) | 2007-05-10 | 2008-11-20 | Sanyo Electric Co Ltd | 密閉型電池 |
US20120213611A1 (en) | 2011-02-17 | 2012-08-23 | Raytheon Company | Gripping washer having one or more deformable gripping tabs and method for reducing foreign object debris |
WO2012118153A1 (ja) | 2011-03-03 | 2012-09-07 | タイコエレクトロニクスジャパン合同会社 | 保護素子 |
CN202659694U (zh) | 2012-05-09 | 2013-01-09 | 苏州友尼可紧固件有限公司 | 一种双倒角垫圈 |
JP2015510659A (ja) | 2012-11-23 | 2015-04-09 | エルジー・ケム・リミテッド | 防錆性ワッシャー及びこれを含む二次電池 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0532938Y2 (ja) * | 1988-03-08 | 1993-08-23 | ||
JP2750390B2 (ja) * | 1992-06-01 | 1998-05-13 | 武田工業株式会社 | 座金の製造方法 |
TW200529484A (en) * | 2003-11-13 | 2005-09-01 | Rovcal Inc | Pressure dissipation assembly for electrochemical cell |
WO2014017091A1 (ja) * | 2012-07-26 | 2014-01-30 | パナソニック株式会社 | 二次電池 |
CN203641557U (zh) * | 2013-10-12 | 2014-06-11 | 谢贺义 | 一种双层密封垫圈 |
-
2018
- 2018-07-18 US US16/629,182 patent/US20200136097A1/en active Pending
- 2018-07-18 CN CN201880042356.8A patent/CN110800132B/zh active Active
- 2018-07-18 JP JP2019530564A patent/JP7070571B2/ja active Active
- 2018-07-18 WO PCT/JP2018/026895 patent/WO2019017382A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007018962A (ja) | 2005-07-11 | 2007-01-25 | Matsushita Electric Ind Co Ltd | 密閉型二次電池 |
JP2007027020A (ja) | 2005-07-21 | 2007-02-01 | Matsushita Electric Ind Co Ltd | 密閉型電池 |
JP2008282679A (ja) | 2007-05-10 | 2008-11-20 | Sanyo Electric Co Ltd | 密閉型電池 |
US20120213611A1 (en) | 2011-02-17 | 2012-08-23 | Raytheon Company | Gripping washer having one or more deformable gripping tabs and method for reducing foreign object debris |
WO2012118153A1 (ja) | 2011-03-03 | 2012-09-07 | タイコエレクトロニクスジャパン合同会社 | 保護素子 |
CN202659694U (zh) | 2012-05-09 | 2013-01-09 | 苏州友尼可紧固件有限公司 | 一种双倒角垫圈 |
JP2015510659A (ja) | 2012-11-23 | 2015-04-09 | エルジー・ケム・リミテッド | 防錆性ワッシャー及びこれを含む二次電池 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2019017382A1 (ja) | 2020-05-28 |
CN110800132B (zh) | 2022-07-08 |
WO2019017382A1 (ja) | 2019-01-24 |
CN110800132A (zh) | 2020-02-14 |
US20200136097A1 (en) | 2020-04-30 |
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