JP2018166023A - 円筒形電池の封口体、および円筒形電池 - Google Patents
円筒形電池の封口体、および円筒形電池 Download PDFInfo
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- 238000007789 sealing Methods 0.000 title claims abstract description 141
- 238000010248 power generation Methods 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 230000000052 comparative effect Effects 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000005486 organic electrolyte Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
- H01M50/157—Inorganic material
- H01M50/159—Metals
-
- 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
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
- H01M50/188—Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
-
- 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
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic 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
- H01M50/30—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
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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
- H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides 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
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
中央に貫通孔を有する円板状の金属製封口板に、前記貫通孔に挿通される軸部を有する正負他方の電極端子が樹脂製封口ガスケットを介して嵌着されてなり、
前記封口板は、板面に形成された溝からなる薄肉部を備え、
前記薄肉部は、上下方向から見たときの平面形状が、前記封口板の外周の同心円から外れた開いた図形に沿って形成されている、
ことを特徴とする円筒形電池の封口体としている。
本発明の実施例に係る封口体は、例えば、図1に示したスパイラル型リチウム一次電池などの円筒形電池に組み込まれ、基本的な構成もほぼ同様である。すなわち、円板状の金属製封口板にガスケットを介して正負一方の電極端子が嵌着されてなる。しかし、本実施例の封口体は、薄肉部の構造に特徴を有して、電池缶の内部に多量のガスが発生した場合でも、電池缶の内圧が過大となる前に確実にガスを排出することができるようになっている。
次に本実施例の封口体20aの防爆安全機能の性能を確認するために、内部に発電要素が収納されていない電池缶2の開口を図2に示した封口体20aで封止するとともに、電池缶2の底部に孔を形成した。そして電池缶2の底部に形成した孔から電池缶2内に水圧を掛ける弁作動試験を行い、封口板6aが開裂したときの圧力を調べた。ここでは、外径14.0mmの円筒形電池(例えば、CR14250型)の電池缶2を用いた。また、図3(A)に示したトラック状の上溝41および下溝42の長径φ1と短径φ2の比をφ1:φ2=1:1.15とした。封口体20aにおける封口板6a以外の構成や構造、および封口体20aの封止方法は市販のCR14250型円筒形電池と同じとした。なお、図3に示した、上溝41a、下溝42a、および薄肉部40aの幅(w1〜w3)や深さ(D1〜D3)は、封口板6aを開裂させる圧力に応じて設定することができ、ここでは約2.15MPaの圧力で開裂するように設定した。
上記実施例に係る封口体20aは、スパイラル型リチウム一次電池に組み込まれていたが、もちろん実施例に係る封口体20aが組み込まれる電池は、円筒状の金属製電池缶2を有したものであればよい。
8 ワッシャ、9 封口ガスケット、20,20a,20b 封口体、
40,40a,40b 薄肉部、41a,41b 上溝、42a,42b 下溝、
43a 下溝内の溝、62 封口板の外周
Claims (4)
- 下方を底部として、正負一方の電極集電体を兼ねる有底円筒状の電池缶内に発電要素が密封されてなる円筒形電池において、前記電池缶の上部開口を封止する封口体であって、
中央に貫通孔を有する円板状の金属製封口板に、前記貫通孔に挿通される軸部を有する正負他方の電極端子が樹脂製封口ガスケットを介して嵌着されてなり、
前記封口板は、板面に形成された溝からなる薄肉部を備え、
前記薄肉部は、上下方向から見たときの平面形状が、前記封口板の外周の同心円から外れた開いた図形に沿って形成されている、
ことを特徴とする円筒形電池の封口体。 - 請求項1に記載の円筒形電池の封口体において、
前記封口板は、自身の直径に対して対称となる非円形の閉じた環状の溝を備え、
前記薄肉部は、上下方向から見て、前記環状の溝の形成領域内に形成されている、
ことを特徴とする円筒形電池の封口体。 - 請求項2において、
前記封口板は、上面に前記環状の溝を備えるとともに、下面に当該溝に沿う環状の第2の溝を備え、
前記薄肉部は、前記上面の溝または前記第2の溝内に形成されている、
ことを特徴とする円筒形電池の封口体。 - 下方を底部として正負一方電極集電体を兼ねる有底筒状の電池缶内に発電要素が収納されているとともに、当該電池缶の開口が請求項1〜3のいずれかに記載の封口体によって封止されていることを特徴とする円筒形電池。
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JP2017062104A JP6890027B2 (ja) | 2017-03-28 | 2017-03-28 | 円筒形電池の封口体、および円筒形電池 |
US15/937,856 US10950829B2 (en) | 2017-03-28 | 2018-03-28 | Sealing body of cylindrical battery, and cylindrical battery |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109301104A (zh) * | 2018-10-29 | 2019-02-01 | 湖南科霸汽车动力电池有限责任公司 | 圆柱形电池用盖帽组合及圆柱形二次电池 |
JP2020047536A (ja) * | 2018-09-21 | 2020-03-26 | パナソニックIpマネジメント株式会社 | 密閉型電池 |
JPWO2021117426A1 (ja) * | 2019-12-13 | 2021-06-17 | ||
JP2021118321A (ja) * | 2020-01-29 | 2021-08-10 | 株式会社アプトデイト | コンデンサ用ケース及びコンデンサ用ケース製造方法 |
WO2022170585A1 (en) * | 2021-02-10 | 2022-08-18 | Gotion, Inc. | Cylindrical battery cell, battery and method for forming cylindrical battery cell |
Families Citing this family (4)
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CN111900452B (zh) * | 2020-06-24 | 2022-05-10 | 先进储能材料国家工程研究中心有限责任公司 | 垂直封口型圆柱电池及其制备方法 |
CN112331969B (zh) * | 2020-11-13 | 2022-09-27 | 河北零点新能源科技有限公司 | 一种提高锂电池倍率的结构 |
DE102022106665A1 (de) | 2022-03-22 | 2023-09-28 | Bayerische Motoren Werke Aktiengesellschaft | Abschlussplatte für ein zellgehäuse einer batteriezelle, zellgehäuse und batteriezelle |
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JP2000251864A (ja) * | 1999-03-01 | 2000-09-14 | Matsushita Battery Industrial Co Ltd | 非水電解液二次電池 |
JP2000285892A (ja) * | 1999-03-31 | 2000-10-13 | Toshiba Electronic Engineering Corp | 非水電解液二次電池 |
JP2004335287A (ja) * | 2003-05-08 | 2004-11-25 | Hitachi Maxell Ltd | 非水二次電池 |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020047536A (ja) * | 2018-09-21 | 2020-03-26 | パナソニックIpマネジメント株式会社 | 密閉型電池 |
JP7178656B2 (ja) | 2018-09-21 | 2022-11-28 | パナソニックIpマネジメント株式会社 | 密閉型電池 |
CN109301104A (zh) * | 2018-10-29 | 2019-02-01 | 湖南科霸汽车动力电池有限责任公司 | 圆柱形电池用盖帽组合及圆柱形二次电池 |
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WO2021117426A1 (ja) * | 2019-12-13 | 2021-06-17 | パナソニックIpマネジメント株式会社 | 密閉型電池 |
JP7308469B2 (ja) | 2019-12-13 | 2023-07-14 | パナソニックIpマネジメント株式会社 | 密閉型電池 |
JP2021118321A (ja) * | 2020-01-29 | 2021-08-10 | 株式会社アプトデイト | コンデンサ用ケース及びコンデンサ用ケース製造方法 |
JP7043086B2 (ja) | 2020-01-29 | 2022-03-29 | 株式会社アプトデイト | コンデンサ用ケース及びコンデンサ用ケース製造方法 |
WO2022170585A1 (en) * | 2021-02-10 | 2022-08-18 | Gotion, Inc. | Cylindrical battery cell, battery and method for forming cylindrical battery cell |
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US10950829B2 (en) | 2021-03-16 |
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