JPH0778602A - Metallic case for square sealed battery - Google Patents
Metallic case for square sealed batteryInfo
- Publication number
- JPH0778602A JPH0778602A JP5248571A JP24857193A JPH0778602A JP H0778602 A JPH0778602 A JP H0778602A JP 5248571 A JP5248571 A JP 5248571A JP 24857193 A JP24857193 A JP 24857193A JP H0778602 A JPH0778602 A JP H0778602A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- battery
- sealing
- thickness
- metallic case
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 abstract description 20
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
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
- H01M50/103—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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は角形密閉電池の電池用金
属ケースの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a metal case for a prismatic sealed battery battery.
【０００２】[0002]
【従来の技術】従来、角形電池、特にニッケルカドミウ
ム蓄電池、ニッケル水素蓄電池に代表される小形携帯用
の角形密閉アルカリ蓄電池においては、帯状の正極及び
負極をセパレータを介して交互に重ね合わせて構成した
極板群を、均一な板厚の有底金属ケース内に収納したの
ち、安全弁を備えた封口蓋体をレーザー封口もしくはか
しめ封口することにより密閉化を図っていた。2. Description of the Related Art Conventionally, in a small portable prismatic alkaline alkaline storage battery represented by a prismatic battery, particularly a nickel-cadmium storage battery and a nickel-hydrogen storage battery, a strip-shaped positive electrode and a negative electrode are alternately stacked with a separator interposed therebetween. After the electrode plate group was housed in a bottomed metal case having a uniform plate thickness, a sealing lid equipped with a safety valve was laser-sealed or caulked to achieve sealing.
【０００３】密閉化は、まず、前記金属ケース内の開口
端付近を縮口する。ひきつづき開口端付近のかしめ封口
は予め拡口した開口部を縮寸および開口端を内方にカー
リングすることによって、前記金属ケースと、金属製封
口板との間に介在させた樹脂製の封口ガスケットを圧縮
せしめ、その反発弾性力により気密かつ液密に封口を図
っているものが一般的である。ところが、かしめ封口さ
れた略四辺形状の封口部分のうち、長辺側は電池内部圧
力の上昇により膨らみやすく、耐ガス圧が劣ってしま
い、安全弁の作動圧とほぼ同等程度の耐ガス圧となるお
それがあり、信頼性の点から耐ガス圧の向上が望まれて
いた。In the hermetic sealing, first, the vicinity of the opening end in the metal case is narrowed. Continuously, the caulking sealing near the opening end is a resin sealing gasket interposed between the metal case and the metal sealing plate by reducing the size of the pre-expanded opening and curling the opening end inward. It is general that the seal is compressed and its repulsive elastic force is used to seal airtightly and liquidtightly. However, in the caulked and sealed quadrangular shape, the long side easily swells due to the increase in the battery internal pressure, and the gas pressure resistance becomes poor, and the gas pressure resistance is about the same as the operating pressure of the safety valve. There is a possibility that the gas pressure resistance may be improved from the viewpoint of reliability.
【０００４】[0004]
【発明が解決しようとする問題点】従来用いられてきた
角形密閉金属ケースは、電極の積層方向への膨らみを考
慮して０．４ｍｍ程度の板厚としており、開口部の加工
性を向上させる目的で開口部と胴部との板厚をほとんど
同一としているため、ケースの硬度を低下させた場合と
か、開口部の板厚を胴部板厚よりも薄くした場合に、縮
寸およびカーリングによって胴部に負荷がかかるため、
変形を生じてしまったり、逆に、変形を生じさせない範
囲で封口を行なうと、カーリング状態が弱く、封口耐圧
強度が弱くなってしまうことがあった。The rectangular closed metal case which has been used conventionally has a plate thickness of about 0.4 mm in consideration of the bulging of the electrodes in the stacking direction, thereby improving the workability of the opening. Since the thickness of the opening and the body are almost the same for the purpose, when the hardness of the case is lowered or the thickness of the opening is made thinner than the body thickness, it may be reduced or curled. Because the load on the torso,
If deformation is caused, or conversely, if the sealing is performed within a range that does not cause deformation, the curling state may be weak and the pressure resistance of the sealing may be weak.
【０００５】本発明は、前述した従来の欠点を改善し、
角形電池の封口耐圧強度及び製造上の安定化を提供する
ことを目的とする。The present invention improves on the above-mentioned conventional drawbacks,
It is an object to provide sealing pressure resistance strength and manufacturing stability of a prismatic battery.
【０００６】[0006]
【問題点を解決するための手段】本発明は予め拡口した
開口部を縮寸ならびに開口端を内方に屈曲し封口する角
形密閉電池用金属ケースであって、開口部板厚が胴部板
厚より厚く、開口部のビッカース硬度（Ｈｖ）が胴部の
ビッカース硬度より小であり、かつ１５０以下であるこ
とを特徴とした角形密閉電池用金属ケースである。SUMMARY OF THE INVENTION The present invention is a metal case for a prismatic sealed battery in which a pre-expanded opening is reduced in size and the opening end is bent inward to close the opening. A metal case for a prismatic sealed battery, which is thicker than a plate thickness, has a Vickers hardness (Hv) of an opening smaller than a Vickers hardness of a body, and is 150 or less.
【０００７】[0007]
【作用】上記のように構成された角形電池用ケースを用
いることにより、本発明は胴部の強度を高く保持したま
まで、開口部をカール金型に沿って屈曲しやすくし、封
口耐圧強度を強くすることができる。By using the prismatic battery case configured as described above, the present invention makes it easy to bend the opening along the curl mold while keeping the strength of the body high, and the sealing pressure resistance strength. Can be stronger.
【０００８】[0008]
【実施例】以下、本発明による一実施例を図面に従い説
明する。図１に示す金属ケース１は、予め開口部１ｂを
拡口した段差を０．３ｍｍ、胴部板厚Ａを０．４ｍｍ、
開口部板厚Ｂを０．４５ｍｍとし、胴部とのビッカース
硬度（Ｈｖ）を１６０、開口部１ｂのＨｖを１００とし
てある。図２において、このケースの開口部内面にアス
ファルト系シール剤を塗布したのち、絶縁ガスケット２
内にトップ３ａを溶接した封口部材３を、金属ケース１
の開口部１ｂに挿入し、段部１ａ上に載置し、金属ケー
ス１の開口部１ｂを縮寸ならびに内方に折り曲げて封口
した。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The metal case 1 shown in FIG. 1 has a step difference of 0.3 mm and a body plate thickness A of 0.4 mm obtained by expanding the opening 1b in advance.
The plate thickness B of the opening is 0.45 mm, the Vickers hardness (Hv) with the body is 160, and the Hv of the opening 1b is 100. In FIG. 2, after applying an asphalt-based sealant on the inner surface of the opening of this case, the insulating gasket 2
The sealing member 3 having the top 3a welded therein is attached to the metal case 1
The opening 1b of the metal case 1 was inserted into the opening 1b, placed on the stepped portion 1a, and the opening 1b of the metal case 1 was reduced in size and bent inward to seal.
【０００９】ちなみに、比較例として開口部と胴部の板
厚が同じで、各部のビッカース硬度がそれぞれ表１中に
示される３種の金属ケースを作成し、同様に封口し、封
口後の状態及び金属ケースに孔を開けケース内部にガス
圧を加え封口部よりのガスの漏れ始める圧力を測定し、
結果を表１に示した。Incidentally, as a comparative example, three kinds of metal cases having the same plate thickness of the opening and the body and the Vickers hardness of each part shown in Table 1 were prepared, similarly sealed, and the state after sealing was performed. Also, make a hole in the metal case, apply gas pressure inside the case, and measure the pressure at which gas begins to leak from the sealing part,
The results are shown in Table 1.
【００１０】[0010]
【表１】 [Table 1]
【００１１】表１から明らかなように、本発明の開口部
の板厚が胴部よりも厚く、開口部のビッカース硬度（Ｈ
ｖ）が胴部より小であり、かつ１５０以下である角形密
閉電池用ケースは、封口後の状態が良好で変形がなく、
封口耐圧も１８〜２０ｋｇｆと高く、比較例１，２，３
に比べて、優れていることが判る。As is clear from Table 1, the plate thickness of the opening of the present invention is thicker than that of the body, and the Vickers hardness (H
In the case of the prismatic sealed battery in which v) is smaller than the body and is 150 or less, the state after sealing is good and there is no deformation,
The sealing pressure resistance is as high as 18 to 20 kgf, and Comparative Examples 1, 2, 3
It turns out that it is superior to.
【００１２】[0012]
【発明の効果】以上のように、本発明は電池用金属ケー
スの開口部の板厚を厚くし、硬度を胴部より下げること
により、角形電池の内部圧力が上昇した時の封口部の膨
みを抑制することができると共に、封口金型に沿って屈
曲しやすいため、胴部に過大な負担を与えることなく、
良好に角形電池を封口することができる。As described above, according to the present invention, by increasing the plate thickness of the opening of the metal case for the battery and lowering the hardness thereof from the body, the expansion of the sealing part when the internal pressure of the prismatic battery rises. It is possible to suppress the damage and it is easy to bend along the sealing mold, so without giving an excessive load to the body,
The prismatic battery can be sealed well.
【図１】本発明の角形密閉電池用金属ケースの断面図で
ある。FIG. 1 is a cross-sectional view of a metal case for a prismatic sealed battery of the present invention.
【図２】本発明の電池用ケースを用いた角形電池の封口
部の断面図である。FIG. 2 is a cross-sectional view of a sealing portion of a prismatic battery using the battery case of the present invention.
１ 金属ケース １ｂ 開口部 １ｃ 胴部 Ａ 胴部板厚 Ｂ 開口部板厚 1 Metal case 1b Opening 1c Body part A Body part thickness B Opening part thickness
───────────────────────────────────────────────────── フロントページの続き (72)発明者 柳川 浩章 東京都品川区南品川３丁目４番10号 東芝 電池株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Yanagawa 3-4-10 Minami-Shinagawa, Shinagawa-ku, Tokyo Inside Toshiba Battery Co., Ltd.
Claims (1)
端を内方に屈曲し封口する角形密閉電池用金属ケースで
あって、開口部板厚が胴部板厚より厚く、開口部のビッ
カース硬度（Ｈｖ）が胴部のビッカース硬度より小であ
り、かつ１５０以下であることを特徴とした角形密閉電
池用金属ケース。1. A metal case for a prismatic sealed battery, wherein a pre-expanded opening is reduced in size and the opening end is bent inward to close the opening, and the opening plate thickness is larger than the body plate thickness. A metal case for a prismatic sealed battery, which has a Vickers hardness (Hv) lower than the Vickers hardness of the body and is 150 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5248571A JPH0778602A (en) | 1993-09-10 | 1993-09-10 | Metallic case for square sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5248571A JPH0778602A (en) | 1993-09-10 | 1993-09-10 | Metallic case for square sealed battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0778602A true JPH0778602A (en) | 1995-03-20 |
Family
ID=17180124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5248571A Pending JPH0778602A (en) | 1993-09-10 | 1993-09-10 | Metallic case for square sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0778602A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100601507B1 (en) * | 2004-09-22 | 2006-07-19 | 삼성에스디아이 주식회사 | Secondary battery |
| KR100709874B1 (en) * | 2005-12-29 | 2007-04-20 | 삼성에스디아이 주식회사 | Prismatric type lithium secondary battery and method thereof |
| CN1316646C (en) * | 2002-09-05 | 2007-05-16 | 三星Sdi株式会社 | Cylindrical lithium secondary battery and its mfg. method |
-
1993
- 1993-09-10 JP JP5248571A patent/JPH0778602A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1316646C (en) * | 2002-09-05 | 2007-05-16 | 三星Sdi株式会社 | Cylindrical lithium secondary battery and its mfg. method |
| US7927734B2 (en) | 2002-09-05 | 2011-04-19 | Samsung Sdi Co., Ltd. | Lithium secondary battery and fabrication method thereof |
| KR100601507B1 (en) * | 2004-09-22 | 2006-07-19 | 삼성에스디아이 주식회사 | Secondary battery |
| KR100709874B1 (en) * | 2005-12-29 | 2007-04-20 | 삼성에스디아이 주식회사 | Prismatric type lithium secondary battery and method thereof |
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