JP2609101B2 - Square sealed battery - Google Patents
Square sealed batteryInfo
- Publication number
- JP2609101B2 JP2609101B2 JP62051995A JP5199587A JP2609101B2 JP 2609101 B2 JP2609101 B2 JP 2609101B2 JP 62051995 A JP62051995 A JP 62051995A JP 5199587 A JP5199587 A JP 5199587A JP 2609101 B2 JP2609101 B2 JP 2609101B2
- Authority
- JP
- Japan
- Prior art keywords
- metal case
- opening
- corner
- caulking
- view
- 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.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims description 35
- 238000007789 sealing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004080 punching Methods 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
- H01M50/147—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
-
- 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
- H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は封口部材を改良した角形密閉電池に関するも
のである。Description: TECHNICAL FIELD The present invention relates to a rectangular sealed battery having an improved sealing member.
角形密閉電池、特に小形携帯用の角形密閉電池は、従
来発電要素を内填した有底角形金属ケース開口部に、蓋
板を内装した絶縁ガスケツトを圧入した後、金属ケース
開口端を内方に折曲して封口していた。Square sealed batteries, especially small portable square sealed batteries, are manufactured by inserting an insulating gasket with a cover plate into the opening of a bottomed square metal case containing a conventional power generation element, and then inserting the metal case opening end inward. It was folded and sealed.
このような場合、開口部の横方向の封口力はガスケツ
トの反発弾性力のみであるため、高い密閉性が得られな
いという問題があつた。In such a case, since the lateral sealing force of the opening is only the repulsive elastic force of the gasket, there is a problem that a high sealing property cannot be obtained.
そこで密閉性を高めるため、ケース開口部を予め外方
に拡げておき、かしめる際開口端を内方に折曲するとと
もに、予め拡げられた開口部を胴部寸法まで絞る方法が
採られていた。Therefore, in order to enhance the sealing performance, a method has been adopted in which the case opening is expanded outward in advance, and at the time of caulking, the opening end is bent inward, and the previously expanded opening is narrowed down to the body dimension. Was.
この方法によれば、部品の精度、合成樹脂部品の熱に
よる影響を考慮する必要もなく、生産性も極めて良いと
いう利点があるものの、密閉性を高めるために、金属ケ
ースの開口部の直線部分並びにコーナー部分を予め外方
に拡げておき、かしめる際に内方に絞る方法が採られる
ため、ケースコーナー部分に歪みが発生し易いという問
題があつた。According to this method, it is not necessary to consider the accuracy of the parts and the influence of heat of the synthetic resin parts, and there is an advantage that the productivity is extremely good. However, in order to improve the sealing property, the linear part of the opening of the metal case is required. In addition, since a method is used in which the corner portion is expanded outward in advance and then squeezed inward when caulking, there is a problem that distortion is likely to occur in the case corner portion.
本発明は上記欠点を除去し、角形電池の密閉性をよく
し、生産性を向上させることを目的とするものである。An object of the present invention is to eliminate the above-mentioned drawbacks, improve the sealing performance of a prismatic battery, and improve productivity.
本発明は、発電要素を内填した予め外方へ広げられた
角形金属ケース開口部に、絶縁ガスケットを介して封口
蓋板を挿入した後、前記金属ケース開口部をかしめて密
閉してなる角形電池において、 前記金属ケース開口部内面のコーナー・アールが、か
しめ封口の前後において、等しいことを特徴とする角形
密閉電池である。According to the present invention, a rectangular metal case opening is inserted into a rectangular metal case opening which has been expanded outward in advance, and a sealing lid plate is inserted through an insulating gasket. A battery according to claim 1, wherein the corner radius of the inner surface of the metal case opening is equal before and after the swaging.
上記のように、本発明は、予め外方へ広げられた角形
金属ケース開口部をかしめる際、かしめ前の金属ケース
開口部内面のコーナー・アールと、かしめ後の金属ケー
ス開口部内面のコーナー・アールとを等しくすること、
つまり、クリンプ型のコーナー・アールを金属ケース開
口部内面のコーナー・アールに合わせることで、ケース
コーナーを変形させず、ケース直線部分を内方に絞るた
め、歪みの発生は直線部分に分散されるので、開口部全
周において均一な圧縮力を得ることができ、密閉性が向
上する。As described above, according to the present invention, when caulking a square metal case opening that has been spread outward in advance, the corner radius of the inner surface of the metal case opening before caulking and the corner of the inner surface of the metal case opening after caulking.・ Equal to R,
In other words, by matching the crimp-type corner radius to the corner radius of the inner surface of the metal case opening, the case corner is not deformed, and the case straight portion is narrowed inward, so that the occurrence of distortion is distributed to the straight portion. Therefore, a uniform compressive force can be obtained over the entire circumference of the opening, and the sealing performance is improved.
さらに、かしめ方式にすることで生産性を向上させ、
製造コストを低減することができる。Furthermore, the productivity is improved by using the caulking method,
Manufacturing costs can be reduced.
以下、図面に従い本発明の一実施例を説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は金属製平板を打抜いて得られる蓋板３を示す
平面図である。コーナー部のアールRpはRp＞０となるよ
うに形成する。FIG. 1 is a plan view showing a cover plate 3 obtained by punching a metal flat plate. The corner portion Rp is formed so that Rp> 0.
第２図は、金属製平板を絞り加工または溶接法によつ
て有底角筒状に形成した金属ケース１を示す平面図及び
断面図である。金属ケース１はかしめ封口した際、かし
め力を高め密閉性を向上させるため、開口部は予め外方
に拡げられている。FIG. 2 is a plan view and a cross-sectional view showing a metal case 1 in which a flat metal plate is formed into a bottomed rectangular cylindrical shape by drawing or welding. When the metal case 1 is closed by caulking, the opening is previously expanded outward in order to increase the caulking force and improve the sealing performance.
第３図は合成樹脂を射出成形して得られた断面Ｌ字形
の絶縁ガスケツト２を示す平面図及び断面図である。平
面図において、絶縁ガスケツト２のコーナー部内面のア
ールＲ′ｇはRpととほぼ同一とし、外面のコーナー・ア
ールRgは、金属ケース内面のコーナー・アールRcとほぼ
同一となるように形成する。FIG. 3 is a plan view and a sectional view showing an insulating gasket 2 having an L-shaped section obtained by injection molding a synthetic resin. In the plan view, the radius R'g of the inner surface of the corner portion of the insulating gasket 2 is substantially the same as Rp, and the radius Rg of the outer surface is formed substantially the same as the radius Rc of the inner surface of the metal case.
第４図において、上記のように形成した蓋板３をガス
ケツト２内に載置した後、金属ケース１の開口部に挿入
する。そしてクリンプ型によりケース開口端を折り曲げ
るとともに開口部を胴部寸法まで内方に絞り、第５図電
池要部断面図に示すような角形密閉電池を完成させる。In FIG. 4, after the lid plate 3 formed as described above is placed in the gasket 2, it is inserted into the opening of the metal case 1. Then, the case opening end is bent by a crimp type and the opening is narrowed inward to the body size to complete a rectangular sealed battery as shown in FIG.
かしめの際、かしめ前の金属ケース開口部内面のコー
ナー・アールと、かしめ後の金属ケース開口部内面のコ
ーナー・アールとを等しくすること、つまり、下方から
電池を挿入し、上方へ電池を押し上げ、金属ケース開口
部を絞るテーパー状のクリンプ型に、電池を下方から挿
入し、押し上げて金属ケース開口端を折り曲げるととも
に、金属ケース開口部を発電要素が内填されている金属
ケース部分の胴部寸法まで絞る方法をとり、クリンプ型
のコーナー・アールを金属ケース開口部内面のコーナー
・アールに合わせることで、ケースコーナーを変形させ
ず、ケース直線部分を内方に絞るため、歪みの発生は直
線部分に分散されるので、金属ケースのかしめ部分の歪
みがほとんど皆無になり、安定した圧縮力が得られる。When caulking, make the corner radius of the inside of the metal case opening before caulking equal to the corner radius of the inside of the metal case opening after caulking, that is, insert the battery from below and push the battery up. Insert the battery from below into a tapered crimp type that squeezes the metal case opening, push it up and bend the metal case opening end, and place the metal case opening in the body of the metal case part in which the power generation element is inserted. By taking the method of squeezing down to the dimensions and matching the crimp type corner radius to the corner radius of the inner surface of the metal case opening, the case corner is not deformed, and the straight part of the case is squeezed inward, so the occurrence of distortion is straight Since the metal case is dispersed, almost no distortion occurs in the caulked portion of the metal case, and a stable compressive force can be obtained.
本発明によれば、金属ケース開口部をかしめる際、か
しめ前の金属ケース開口部内面のコーナー・アールと、
かしめ後の金属ケース開口部内面のコーナー・アールと
を等しくすること、つまり、クリンプ型のコーナー・ア
ールを金属ケース開口部内面のコーナー・アールに合わ
せることで、ケースコーナーを変形させず、ケース直線
部分を内方に絞るため、歪みの発生は直線部分に分散さ
れるので、開口部全周において均一な圧縮力を得ること
ができ、歪みに起因する密閉性の低下が全くなく、信頼
性の高い角形密閉電池が得られる。According to the present invention, when caulking the metal case opening, a corner radius of the metal case opening inner surface before caulking,
By making the corner radius of the inner surface of the metal case opening after caulking equal, that is, by aligning the crimp-type corner radius with the corner radius of the inner surface of the metal case opening, the case corner is not deformed and the case straight Since the portion is squeezed inward, the occurrence of distortion is distributed to the linear portion, so that a uniform compressive force can be obtained over the entire circumference of the opening, and there is no reduction in sealing performance due to distortion, and reliability A high rectangular sealed battery can be obtained.
また、かしめ封口法にすることで、レーザ溶接機のよ
うな高価な設備を必要とせず、生産性も向上し、製造コ
ストを低減できる。In addition, by using the caulking sealing method, expensive equipment such as a laser welding machine is not required, productivity is improved, and manufacturing cost can be reduced.
第１図は本発明の角形密閉電池の一実施例に用いられる
蓋板の平面図、第２図は同実施例に用いられる金属ケー
ス開口部の平面図及び断面図、第３図は同実施例に用い
られる絶縁ガスケツトの平面図及び断面図、第４図は同
実施例電池の開口部のかしめ前の断面図、第５図は同実
施例電池の開口部のかしめ後の断面図である。 １……金属ケース Rc……金属ケース開口部のコーナー・アル ２……ガスケツト Rg,R′ｇ……ガスケツトのコーナー・アール ３……蓋板 Rp……蓋板のコーナー・アールFIG. 1 is a plan view of a cover plate used in one embodiment of a rectangular sealed battery of the present invention, FIG. 2 is a plan view and a cross-sectional view of a metal case opening used in the embodiment, and FIG. FIG. 4 is a plan view and a cross-sectional view of an insulating gasket used in the example, FIG. 4 is a cross-sectional view of the opening of the battery of the embodiment before swaging, and FIG. 5 is a cross-sectional view of the opening of the battery of the embodiment after swaging. . 1 ... metal case Rc ... corner corner of metal case opening 2 ... gasket Rg, R'g ... corner R of gasket 3 ... cover plate Rp ... corner R of cover plate
Claims (1)
角形金属ケース開口部に、絶縁ガスケットを介して封口
蓋板を挿入した後、前記金属ケース開口部をかしめて密
閉してなる角形電池において、 金属ケース開口部のコーナー・アールが、かしめ封口の
前後において、等しいことを特徴とする角形密閉電池。1. A sealing cover plate is inserted through an insulating gasket into an opening of a rectangular metal case which is preliminarily spread outward and in which a power generating element is inserted, and the metal case opening is caulked and hermetically sealed. A rectangular sealed battery characterized in that the corner radius of the opening of the metal case is equal before and after the caulking seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62051995A JP2609101B2 (en) | 1987-03-09 | 1987-03-09 | Square sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62051995A JP2609101B2 (en) | 1987-03-09 | 1987-03-09 | Square sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63221554A JPS63221554A (en) | 1988-09-14 |
| JP2609101B2 true JP2609101B2 (en) | 1997-05-14 |
Family
ID=12902435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62051995A Expired - Fee Related JP2609101B2 (en) | 1987-03-09 | 1987-03-09 | Square sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2609101B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3923259B2 (en) | 2000-08-22 | 2007-05-30 | 松下電器産業株式会社 | Battery manufacturing method |
-
1987
- 1987-03-09 JP JP62051995A patent/JP2609101B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63221554A (en) | 1988-09-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |