JPH09293486A - Manufacture of metal case for square sealed battery - Google Patents
Manufacture of metal case for square sealed batteryInfo
- Publication number
- JPH09293486A JPH09293486A JP8106715A JP10671596A JPH09293486A JP H09293486 A JPH09293486 A JP H09293486A JP 8106715 A JP8106715 A JP 8106715A JP 10671596 A JP10671596 A JP 10671596A JP H09293486 A JPH09293486 A JP H09293486A
- Authority
- JP
- Japan
- Prior art keywords
- opening
- case
- enlarged portion
- metal case
- sealed battery
- 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 title claims abstract description 24
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000137 annealing Methods 0.000 claims abstract description 8
- 239000010960 cold rolled steel Substances 0.000 claims abstract description 3
- 230000006698 induction Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 24
- 239000000565 sealant Substances 0.000 abstract description 2
- 238000010409 ironing Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin 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
- Heat Treatment Of Articles (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は角形密閉電池の金属
ケースの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a metal case of a prismatic sealed battery.
【０００２】[0002]
【従来の技術】従来、角形電池、特にニッケルカドニウ
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、帯状の正極およ
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、有底の金属ケース内に収納した後、安全弁
を備えた封口板をケース開口部にレーザ溶接もしくはか
しめ固定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, strip-shaped positive electrodes and negative electrodes are alternately stacked with a separator interposed therebetween. After the electrode plate group was housed in a bottomed metal case, a sealing plate equipped with a safety valve was laser-welded or caulked and fixed to the opening of the case for sealing.
【０００３】かしめ封口による密閉化は、予め拡口段部
を形成した金属ケースの開口部に封口板を配置し、ケー
スの拡口部を縮径するとともに開口端を内方に折り曲げ
ることによって、金属ケースと金属製封口板との間に介
在させた合成樹脂製の封口ガスケットを加圧圧縮し、そ
の反発弾性力により耐圧・耐漏液性の確保を図っている
ものが一般的である。The sealing by caulking and sealing is performed by arranging a sealing plate in the opening of a metal case in which a step for expanding is formed in advance, reducing the diameter of the opening of the case and bending the opening end inward. In general, a synthetic resin sealing gasket interposed between a metal case and a metal sealing plate is pressed and compressed, and the repulsive elasticity of the sealing gasket ensures pressure resistance and liquid leakage resistance.
【０００４】ところが、前記角形ケースの開口端を内方
に折り曲げようとすると、封口部のコーナー部分に偏肉
あるいは歪みが生じるため、前記ケースの開口端を金型
に沿って内方に正確に折り曲げることは困難であった。However, if the opening end of the rectangular case is bent inward, uneven thickness or distortion occurs at the corner portion of the sealing portion, so that the opening end of the case is accurately moved inward along the mold. It was difficult to fold.
【０００５】そこで、特開平７−７８６０２号公報に
は、角形密閉電池用金属ケースとして、開口部の板厚が
胴部の板厚よりも厚く、開口部のビッカース硬度（Ｈ
ｖ）が胴部のそれよりも小であり、かつ、Ｈｖを１５０
以下とするのがよい旨の提案がある。In view of this, Japanese Patent Laid-Open No. 7-78602 discloses a metal case for a prismatic sealed battery in which the thickness of the opening is thicker than the thickness of the body and the Vickers hardness (H) of the opening is high.
v) is smaller than that of the body, and Hv is 150
There is a suggestion that the following should be done.
【０００６】[0006]
【発明が解決しようとする課題】上記のような角形密閉
電池用金属ケースの製造方法は、ケース開口部を拡口し
て封口板配置用の段部を形成し、次いで段部の形成され
た拡口部を焼鈍処理する方法が一般的である。しかし矩
形の拡口部のうち、その長辺側は焼鈍処理により残留応
力が除去されるために膨らむことがあり、封口板をかし
め固定したときに、その封口部の耐圧・耐漏液性の十分
な確保が困難である。In the method of manufacturing the metal case for the prismatic sealed battery as described above, the case opening is expanded to form the step portion for placing the sealing plate, and then the step portion is formed. The method of annealing the widened portion is common. However, the long side of the rectangular opening may swell because residual stress is removed by annealing, and when the sealing plate is caulked and fixed, the sealing part has sufficient pressure resistance and liquid leakage resistance. Is difficult to secure.
【０００７】本発明は、前述した従来の課題を改善し、
角形電池の封口部の耐圧・耐漏液性の確保および安定し
て製造できる製造方法を提供することを目的とする。The present invention improves the above-mentioned conventional problems,
An object of the present invention is to provide a manufacturing method capable of ensuring pressure resistance and liquid leakage resistance of a sealing portion of a prismatic battery and stably manufacturing the same.
【０００８】[0008]
【課題を解決するための手段】本発明は角形ケースの開
口部を焼鈍処理した後その開口部を拡口し、ついでこの
拡口部に段部を形成することにより、所定の形状寸法に
整形する角形密閉電池用金属ケースの製造方法である。According to the present invention, an opening portion of a rectangular case is annealed, the opening portion is expanded, and then a step portion is formed in the expanded portion to shape it into a predetermined shape and dimension. Is a method for manufacturing a metal case for a prismatic sealed battery.
【０００９】[0009]
【発明の実施の形態】上記の角形密閉電池用金属ケース
の製造方法を用いることにより、ケース開口部の形状が
ばらつくことなく、所定の形状寸法に正確にケースを整
形することができ、封口板をかしめ封口したときに、そ
の封口部の耐圧・耐漏液性を十分に確保できる。BEST MODE FOR CARRYING OUT THE INVENTION By using the method for manufacturing a metal case for a prismatic sealed battery described above, the case can be accurately shaped into a predetermined shape and dimension without changing the shape of the case opening, and the sealing plate When caulking and sealing, it is possible to secure sufficient pressure resistance and liquid leakage resistance of the sealing portion.
【００１０】[0010]
【実施例】以下、本発明による実施例を図面に従い説明
する。図１に示す角形金属ケース１は、ケースの材料が
冷間圧延鋼板であり、ケースの板厚が０．４ｍｍである
金属ケースの開口部を高周波誘導加熱器で４５０〜６０
０℃の温度で焼鈍処理し、次いでその開口部をダイスを
用いた絞り加工により拡口１ｂし、この拡口部にしごき
加工により段部１ａを形成している。なお１ｃは胴部を
示す。Embodiments of the present invention will be described below with reference to the drawings. In the rectangular metal case 1 shown in FIG. 1, the case material is a cold rolled steel plate, and the opening of the metal case having a plate thickness of 0.4 mm is 450 to 60 by a high frequency induction heater.
Annealing treatment is performed at a temperature of 0 ° C., and then the opening is expanded by a drawing process using a die to form a widened portion 1b. In addition, 1c shows a body part.
【００１１】図２において、このケース１の拡口部１ｂ
内面に封止剤（図示せず）を薄く塗布した後、断面Ｌ形
の絶縁ガスケット２内に端子キャップ３ａを中央部分に
溶接した封口板３を配して、ケース１の拡口部１ｂ内に
挿入し、段部１ａ上に配置した後、金属ケース１の拡口
部１ｂを縮径させるとともに開口端を内方に折り曲げて
封口した。In FIG. 2, the widened portion 1b of the case 1 is shown.
After thinly applying a sealant (not shown) on the inner surface, a sealing plate 3 having a central portion welded to a terminal cap 3a is arranged in an insulating gasket 2 having an L-shaped cross section, and inside the widening portion 1b of the case 1. After being placed on the stepped portion 1a, the diameter of the opening portion 1b of the metal case 1 was reduced, and the opening end was bent inward to close the opening.
【００１２】比較例のための従来の方法により同様の角
形金属ケースを作成し、前記実施例同様に封口したもの
を用意した。この２つの金属ケースに孔を開け、ケース
内部にガス圧を加えて封口部よりのガスの漏れ始める圧
力を測定した結果を（表１）に示した。A similar rectangular metal case was prepared by the conventional method for the comparative example, and the same sealed case was prepared as in the above example. A hole was opened in these two metal cases, gas pressure was applied to the inside of the cases, and the pressure at which the gas started to leak from the sealing portion was measured. The results are shown in Table 1.
【００１３】[0013]
【表１】 [Table 1]
【００１４】（表１）から明らかなように本発明の方法
により作成された角形密閉電池用金属ケースは、拡口部
の状態が良好で膨れがなく、封口部の耐圧も１６〜１８
ｋｇｆと高く、比較例に比べて、優れていることがわか
る。これはケース開口部を焼鈍処理後に拡口すること
で、拡口時の残留応力が保たれることによる。As is apparent from (Table 1), the metal case for a prismatic sealed battery produced by the method of the present invention has a good state of the widened portion, does not swell, and has a pressure resistance of 16 to 18 at the sealed portion.
It is as high as kgf, which shows that it is superior to the comparative example. This is because the case opening is expanded after the annealing treatment so that the residual stress at the time of expansion is maintained.
【００１５】[0015]
【発明の効果】以上のように、本発明は開口部を焼鈍処
理した後拡口し、拡口部に段部を形成することにより、
ケース開口部の形状がばらつくことなく、所定の形状寸
法に正確に整形することができ、従って封口板をかしめ
固定しても、封口部の耐圧・耐漏液性が十分に確保でき
る。As described above, according to the present invention, the opening is annealed and then expanded, and the step is formed in the expanded part.
The shape of the case opening can be accurately shaped into a predetermined shape without variation, and therefore even if the sealing plate is caulked and fixed, the pressure resistance and liquid leakage resistance of the sealing portion can be sufficiently secured.
【図１】本発明の方法で製造した角形密閉電池用金属ケ
ースの断面図FIG. 1 is a sectional view of a metal case for a prismatic sealed battery manufactured by the method of the present invention.
【図２】同金属ケースを用いた角形電池の封口部の断面
図FIG. 2 is a sectional view of a sealing portion of a prismatic battery using the same metal case.
１ 金属ケース １ａ 段部 １ｂ 拡口部 １ｃ 胴部 ２ 絶縁ガスケット ３ 封口板 ３ａ 端子キャップ 1 Metal Case 1a Step 1b Opening 1c Body 2 Insulation Gasket 3 Sealing Plate 3a Terminal Cap
Claims (4)
口部を拡口し、この拡口部分に段部を形成する角形密閉
電池用金属ケースの製造方法。1. A method for manufacturing a metal case for a prismatic sealed battery, comprising annealing an opening of a case, expanding the opening, and forming a step at the expanded portion.
ースの板厚が０．４ｍｍである請求項１記載の角形密閉
電池用金属ケースの製造方法。2. The method for manufacturing a metal case for a prismatic sealed battery according to claim 1, wherein the case material is a cold rolled steel plate, and the plate thickness of the case is 0.4 mm.
請求項１記載の角形密閉電池用金属ケースの製造方法。3. The method for manufacturing a metal case for a prismatic sealed battery according to claim 1, wherein high frequency induction heating is used as the annealing treatment.
請求項１記載の角形密閉電池用金属ケースの製造方法。4. The method for manufacturing a metal case for a prismatic closed battery according to claim 1, wherein the annealing treatment temperature is 450 to 600 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8106715A JPH09293486A (en) | 1996-04-26 | 1996-04-26 | Manufacture of metal case for square sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8106715A JPH09293486A (en) | 1996-04-26 | 1996-04-26 | Manufacture of metal case for square sealed battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09293486A true JPH09293486A (en) | 1997-11-11 |
Family
ID=14440663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8106715A Pending JPH09293486A (en) | 1996-04-26 | 1996-04-26 | Manufacture of metal case for square sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09293486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2769260A1 (en) | 1997-10-02 | 1999-04-09 | Asahi Optical Co Ltd | THERMAL HEAD AND ITS USE IN AN INK TRANSFER PRINTER |
| CN112086691A (en) * | 2020-09-17 | 2020-12-15 | 潘文硕 | Preparation method of button lithium battery and obtained product |
| CN117403156A (en) * | 2023-12-14 | 2024-01-16 | 东方蓝天钛金科技有限公司 | Heat treatment method of GH4169 alloy flaring nut |
-
1996
- 1996-04-26 JP JP8106715A patent/JPH09293486A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2769260A1 (en) | 1997-10-02 | 1999-04-09 | Asahi Optical Co Ltd | THERMAL HEAD AND ITS USE IN AN INK TRANSFER PRINTER |
| FR2798881A1 (en) | 1997-10-02 | 2001-03-30 | Asahi Optical Co Ltd | THERMAL HEAD AND ITS USE IN AN INK TRANSFER PRINTER |
| CN112086691A (en) * | 2020-09-17 | 2020-12-15 | 潘文硕 | Preparation method of button lithium battery and obtained product |
| CN117403156A (en) * | 2023-12-14 | 2024-01-16 | 东方蓝天钛金科技有限公司 | Heat treatment method of GH4169 alloy flaring nut |
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