JPS63291353A - Squared sealed-type battery - Google Patents
Squared sealed-type batteryInfo
- Publication number
- JPS63291353A JPS63291353A JP62126216A JP12621687A JPS63291353A JP S63291353 A JPS63291353 A JP S63291353A JP 62126216 A JP62126216 A JP 62126216A JP 12621687 A JP12621687 A JP 12621687A JP S63291353 A JPS63291353 A JP S63291353A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- battery container
- lid
- container
- rectangular
- 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
- 230000000630 rising effect Effects 0.000 claims abstract description 26
- 238000010409 ironing Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 23
- 238000003466 welding Methods 0.000 abstract description 15
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000001678 irradiating effect Effects 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009966 trimming 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
-
- 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)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は発電要素を収納した金属製の電池容器と蓋体と
をレーザ溶接により密封した角形密閉式電池に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a rectangular sealed battery in which a metal battery container housing a power generation element and a lid are sealed by laser welding.
従来の技術
近年、ポータプル電子機器の小型、薄形化が進むととも
に、その電源として用いる密閉式′１を池に対しても小
型で容量密度の大きいものが要求されるようになってき
た。とくに、機器と一体に組込まれて長期間使用される
ことが多い電池、例えば密閉式アルカリ蓄電池あるいは
リチウム電池などにおいて、従来の円筒形、ボタン形の
電池よりも収納時のスペース効率のよい小型の角形、角
・薄形電池への要望が強まシ、その具体化が進められて
いる。小型の角形密閉式電池の場合、容積効率を低下さ
せずに、過充電、過放電時などに発生するガス圧力に耐
えるものとするために、金属製の電池容器に蓋板を嵌合
し、その接合部をレーザ溶接により密封した構造が一般
に採用されている。BACKGROUND OF THE INVENTION In recent years, as portable electronic devices have become smaller and thinner, there has been a demand for a sealed type 1 used as a power source to be smaller and have a higher capacity density. In particular, for batteries that are often integrated into equipment and used for long periods of time, such as sealed alkaline storage batteries or lithium batteries, compact and space-efficient batteries are more efficient than conventional cylindrical or button-shaped batteries. There is a growing demand for square, rectangular and thin batteries, and efforts are being made to make them a reality. In the case of small prismatic sealed batteries, in order to withstand the gas pressure that occurs during overcharging and overdischarging without reducing volumetric efficiency, a lid plate is fitted to the metal battery container. A structure in which the joint is sealed by laser welding is generally adopted.
前記電池構造において、レーザ溶接に対応するために電
池容器と蓋体の嵌合形式として、第５図側面要部断面図
に示した、例えば特開昭５９−５１４５７号公報に開示
されたごとく、発電要素２２を収納したステンレス鋼製
などの電池容器２１の開口部に、周縁に環状の立上り部
２３＆を設けたステンレス鋼製などの電池蓋２３を図示
のように嵌合し、両者の接合部にレーザビームを照射し
て溶接部２５を形成し密封する方式が多く用いられてい
る。角形の電池においては、電池蓋の周縁の相対する２
辺にのみ電池内方側に向けて立上り部を形成しく図示せ
ず）、この立上り部をガイドとして電池容器の開口部の
所定位置に嵌合固定した後、嵌合部全周を溶接する方式
もあった。In the battery structure, as a fitting type of the battery container and the lid body in order to support laser welding, as shown in the side cross-sectional view of the main part in FIG. As shown in the figure, a battery lid 23 made of stainless steel or the like having an annular rising portion 23 on its periphery is fitted into the opening of a battery container 21 made of stainless steel or the like that houses the power generation element 22, and the joint between the two is fitted. A method is often used in which a welded portion 25 is formed and sealed by irradiating the welded portion 25 with a laser beam. For square batteries, the two opposite edges of the battery lid
A method in which a rising part is formed only on the side (not shown) facing inward of the battery, and after fitting and fixing in a predetermined position in the opening of the battery container using this rising part as a guide, the entire circumference of the fitted part is welded. There was also.
発明が解決しようとする問題点
このような従来の構成では、特開昭５７−１４５２６５
号公報などに示されているように、用いる電池容器およ
び立上り部を有する電池蓋などの部品は、生産性の観点
から一般に鋼板などを切り絞りあるいはトリミング法を
用いた絞り加工法によって作られる。そのため、前記接
合部を形成する電池容器の開口部端面および電池蓋の立
上り部端面が直角に成型されにくく、接合部端面の密着
性が不十分あるいは第６固型部断面図に示したごとく電
池容器３１の開口部と電池蓋３３の立上り部３３＆の嵌
合部に間隙Ｇ１ が生じやすい。ところがレーザ溶接に
よれば、溶接部周辺を過熱させずに微細な溶接が精度よ
くできる反面、レーザビームは微細径で直進するため、
接合部の嵌合精度が問題になり、溶接不良あるいは電池
内部の発電要素に損傷を与える原因となりやすい。Problems to be Solved by the Invention In such a conventional configuration,
As shown in the above publication, parts such as the battery container and the battery cover having a rising portion are generally made from a steel plate by cutting or drawing using a trimming method from the viewpoint of productivity. Therefore, it is difficult for the opening end face of the battery container and the rising end face of the battery lid, which form the joint part, to be formed at right angles, and the adhesion of the joint end face is insufficient, or as shown in the cross-sectional view of the sixth solid part, A gap G1 is likely to occur at the fitting portion between the opening of the container 31 and the rising portion 33& of the battery cover 33. However, with laser welding, it is possible to perform fine welds with high accuracy without overheating the area around the weld, but on the other hand, because the laser beam travels in a straight line with a fine diameter,
The fitting accuracy of the joint becomes a problem, which tends to cause poor welding or damage to the power generation element inside the battery.
円筒形の電池では、例えば前記特開昭６７−１４５２６
５号公報に図示されたように電池蓋の立上り部端面を外
方に折曲して電池容器の開口部端面を覆うようにし、電
池の側面方向からレーザビームを照射するなど接合部の
形状を変える方法、まだは第７図に示した、例えば実開
昭５９−１９２２６１号公報に開示されたように電池蓋
４３の立上り部４３＆の外径φ２ を電池容器３１の内
径φ１より若干大きくして、電池蓋４３を圧入嵌合させ
て接合部の密着性改善を図った提案がある。しかし角形
電池の場合、部品加工の技術上の問題およびレーザ溶接
装置が複雑となシ精度の安定性に欠けるなどの理由から
、従来の提案を適用することは困難であった。上記した
ように電池容器と電池蓋を嵌合した接合部をレーザ溶接
によって密封する場合、接合面はできる限り密着し、食
い違いなども少ないことが要求される。溶接可能な間隙
（例えば第６図のＧ＋）は、実開昭６１−１１９２５５
号公報に示された角形電池では、直線部で０．１５ｆｆ
以下などの規制を設けているが、電池蓋嵌入時の安定性
、溶接時の生産性（溶接速度）を考慮すれば、前記間隙
はおよそ０．１ｆｌ以下にする必要がある。前記実開昭
６１−１１９２５５号に示された角形電池では角筒を用
い、底板および蓋板をそれぞれ嵌合させ溶接する方式で
あり、角筒は製造する場合に中型を用い、寸法的に選別
して使用することにより、精度を確保することは可能で
ある。しかし、生産性及び信頼性の面から見ると、有底
の電池容器を使用することが望まれる。ところが、前記
したように絞り加工法によって角形の電池容器を成型し
た場合、第８図に示した上面形状模式図に見られるよう
に、電池容器５１は角部５１ｂに偏肉し直線部６１＆が
薄肉となり彎曲しゃすく、直線に対しＧ２の間隙を生じ
る。また成型性を確保するためには角部６１ｂには図示
のごとく比較的大きな円弧を設ける必要があるが、その
形状寸法精度を確保するのは難しい。また立上り部を有
する７（ｉ池蓋の場合は、その立上り部の高さが低いた
め影響は少なくなるが同様に形状１寸法精度上の課題が
あり、これらを嵌合して用いると０．１〜０．３ｎ程度
の間隙を生じる部分および電池蓋が傾いて装着されやす
いという問題があった。For cylindrical batteries, for example, the above-mentioned Japanese Patent Application Laid-Open No. 67-14526
As shown in Publication No. 5, the end face of the rising part of the battery cover is bent outward to cover the end face of the opening of the battery container, and the shape of the joint is modified by irradiating a laser beam from the side of the battery. There is no way to change the method, as shown in FIG. 7, for example, as disclosed in Japanese Utility Model Application Publication No. 59-192261, by making the outer diameter φ2 of the rising portion 43& of the battery cover 43 slightly larger than the inner diameter φ1 of the battery container 31. There is a proposal in which the battery cover 43 is press-fitted to improve the adhesion of the joint. However, in the case of prismatic batteries, it has been difficult to apply conventional proposals due to technical problems in processing parts, complicated laser welding equipment, and lack of stability in accuracy. When the joint where the battery container and the battery cover are fitted is sealed by laser welding as described above, the joint surfaces are required to be in as close contact as possible and to have little discrepancy. The weldable gap (for example, G+ in Fig. 6) is based on Utility Model Application No. 61-119255.
In the prismatic battery shown in the publication, 0.15ff in the straight section
Although the following regulations have been established, the gap needs to be approximately 0.1 fl or less in consideration of stability when fitting the battery cover and productivity during welding (welding speed). The prismatic battery shown in the above-mentioned Utility Model Application Publication No. 61-119255 uses a square tube, and the bottom plate and the cover plate are fitted and welded, respectively.When manufacturing the square tube, a medium-sized one is used and the size is sorted. It is possible to ensure accuracy by using However, from the viewpoint of productivity and reliability, it is desirable to use a battery container with a bottom. However, when a rectangular battery container is formed by the drawing method as described above, the battery container 51 has uneven thickness at the corner portion 51b and the straight portion 61 & It is thin and curved, creating a gap of G2 with respect to a straight line. Further, in order to ensure moldability, it is necessary to provide a relatively large circular arc in the corner portion 61b as shown in the figure, but it is difficult to ensure the accuracy of the shape and size. In addition, in the case of a 7 (i) pond lid that has a rising part, the influence will be less because the height of the rising part is low, but there is also a problem with the shape 1 dimensional accuracy, and if these are used by fitting together, the effect will be less. There was a problem in that the part where a gap of about 1 to 0.3 nm was formed and the battery cover were likely to be installed at an angle.
本発明はこのような問題点を解決するもので、しごき加
工を併用した成型法により形状を整えた電池容器及び蓋
体を用いることにより、両者の嵌合精度を向上安定させ
ることを目的とするものである。The present invention is intended to solve these problems, and aims to improve and stabilize the fitting precision between the two by using a battery container and a lid shaped by a molding method that combines ironing. It is something.
問題点を解決するだめの手段
この問題点を解決するために本発明は、角形の電池容器
及び立上り部を有する蓋体として金属板を絞り成型した
ものをしごき加工によって形状を整えることにより、そ
の嵌合状態を調整したものを用い、両者を嵌合した接合
部を溶接して密封するようにしたものである。Means for Solving the Problem In order to solve this problem, the present invention provides a rectangular battery container and a lid having a raised portion by drawing and molding a metal plate and adjusting the shape by ironing. The fitting condition is adjusted, and the joint where the two are fitted is welded and sealed.
作用
この構成により、電池容器の開口部に蓋体を安定した状
態で載置することができるとともに、電池容器の開口部
と蓋体の立上り部との嵌合精度を高めることができるの
で、レーザ溶接を容易ならしめ、確実な電池の密封状態
が得られることとなる。Function: With this configuration, the lid can be stably placed in the opening of the battery container, and the accuracy of fitting between the opening of the battery container and the rising part of the lid can be improved, so the laser This makes welding easier and ensures a reliable battery seal.
実施例
本発明の角形密閉式電池の一実施例を図によって説明す
るっ第１図人は実施例の電池の上部外観を示し、第１図
Ｂはその要部の側断面を示すものである。角形の電池容
器１及び蓋体３は本発明の主体となるものであり、鋼板
などの金属板を絞り ・成型法によって予備成型した角
形容器及び立上り部を有する蓋板を、後述するようにし
ごき加工により所定の形状、嵌合寸法精度に調整加工し
た電池容器１及び蓋体３を用いる。発電要素２を収納し
た電池容器１の開口部に、周縁に立上り部３ａを有しそ
の中央に端子頭部４ａの脚部４ｄを絶縁リング４ｅ、金
属ワッシャー４でと共に締着して電池端子４を設けた蓋
体３を嵌合載置して形成された接合部５ａに所定のレー
ザビームを照射して溶接し溶接部６を形成して密封した
ものである。Embodiment An embodiment of the prismatic sealed battery of the present invention will be explained with reference to figures. Figure 1 shows the upper appearance of the battery of the embodiment, and Figure 1B shows a side cross-section of its main parts. . The rectangular battery container 1 and the lid 3 are the main components of the present invention, and the rectangular container and the lid plate having the rising portion are preformed by squeezing a metal plate such as a steel plate and a molding method, and are pressed as described below. A battery container 1 and a lid 3 that have been processed to have a predetermined shape and fitting dimension accuracy are used. The opening of the battery container 1 housing the power generation element 2 has a rising portion 3a on the periphery, and the leg portion 4d of the terminal head 4a is fastened to the center thereof with an insulating ring 4e and a metal washer 4 to form a battery terminal 4. A welded portion 6 is formed by irradiating a predetermined laser beam onto a joint portion 5a formed by fitting and placing a lid body 3 provided with a predetermined laser beam, thereby forming a welded portion 6 and sealing the joint portion 5a.
次に第２図〜第４図により上記した電池容器１及び立上
り部３ａを有する蓋体３の加工について詳述する。第２
図ム、Ｂは、本発明で用いる角形の電池容器１の加工工
程における側面要部断面を示す模式図であシ、第３図ム
、Ｂ、Ｃは第２図の工程を経て完成した矩形状の電池容
器１の形状を示す模式図である。まず第３図に示した完
成した電池容器１の側壁の厚さｔｌの１．２〜１．８倍
程度の厚さを有する鋼板を素板とし、通常用いられる絞
り加工法により、第２図人に示す側壁厚さ１゜が素板厚
さの約０．９〜１倍の矩形状の角形容器１′を成型する
。次いでこの容器１′を第２図Ｂに示したしごき加工（
Ｉｒｏｎｉｎｇ）型によって所定の形状寸法に整える。Next, the processing of the battery container 1 and the lid 3 having the rising portion 3a will be described in detail with reference to FIGS. 2 to 4. Second
Figures 3A and 3B are schematic diagrams showing cross sections of main parts of the side surfaces in the processing process of the rectangular battery container 1 used in the present invention, and Figures 3A, 3B, and 3B are schematic diagrams showing the cross sections of the main parts of the rectangular battery container 1 used in the present invention. 2 is a schematic diagram showing the shape of a shaped battery container 1. FIG. First, a steel plate having a thickness of about 1.2 to 1.8 times the side wall thickness tl of the completed battery container 1 shown in FIG. A rectangular container 1' having a side wall thickness of about 0.9 to 1 times the thickness of the blank plate is molded. Next, this container 1' was subjected to the ironing process (
It is shaped into a predetermined shape and size using an ironing mold.
しごき加工型は、ガイド部（ネス） ）１２１Ｌ、ダイ
ス部１２ｂを備えた外型１２と、ポンチ１１及び受型１
３を主体に構成されてプレス機に取り付けられている。The ironing mold includes an outer mold 12 having a guide part (nest) 121L and a die part 12b, a punch 11 and a receiving mold 1.
3 and is attached to the press machine.
プレス機に固定された外型１２のガイド部１２２Ｌに前
記第２図人の角形容器１′を載置し、上下可動のポンチ
１１に矢印方向の押圧力を加えることによシ、角形容器
１′はガイド部１２＆によって支持されながらダイス部
１２ｂに押しこまれ、しごき加工を受け、図示のごとく
下部から順次押し出され所定の内外寸法形状の厚さｔｌ
の側壁部を有する容器が形成される。次いで規定の高さ
に切断され、所定のニッケルめっきを施されて第３図人
に示す一方の側面断面図、第３図Ｂに示す他方の側面断
面図、第３図Ｇに上面図をそれぞれ示した矩形状の電池
容器１を得る。上記第２図において、ポンチ１１の形状
は、第３図の電池容器１の内寸法り、Ｗと同寸法とし、
ダイス部１２ｂの寸法は電池容器１の外寸法り。、Ｗｏ
と同じにする。このしごき加工型によって第２図人の角
形容器１′の側壁（厚さｔｏ）は、約９０〜６０％の厚
さにしごき加工を受けることによって、所定寸法精度の
形状の電池容器１（厚さ１．）となる。なお、角形容器
１′の内寸法Ｌ＋（Ｗ＋）は、ポンチ１１の挿入が容易
となるよう０．０１〜０．０５ＭＭ程度大きくしておく
とよい。また第２図Ｂにおいて、受型１３は加工中の電
池容器１の底部に圧接しながら下方に移動し、容器底部
の変形を防止するものであり、加工された電池容器１は
受型１３に設けられたノックアウトピン１４によって外
型１２から取出される。The rectangular container 1' shown in FIG. ' is pushed into the die part 12b while being supported by the guide part 12&, undergoes ironing, and is sequentially extruded from the bottom as shown in the figure to form a thickness tl with predetermined internal and external dimensions.
A container is formed having a sidewall of . Then, it is cut to a specified height and subjected to a predetermined nickel plating, and one side cross-sectional view is shown in Figure 3, the other side cross-sectional view is shown in Figure 3B, and the top view is shown in Figure 3G. A rectangular battery container 1 as shown is obtained. In FIG. 2 above, the shape of the punch 11 is the same as the inner dimension W of the battery container 1 in FIG.
The dimensions of the dice portion 12b are the same as the outer dimensions of the battery container 1. ,Wo
Make it the same as. By ironing the side wall (thickness to) of the rectangular container 1' in Figure 2 to approximately 90 to 60% thickness using this ironing mold, the battery container 1 (thickness to) is shaped with predetermined dimensional accuracy. 1.). Note that the inner dimension L+(W+) of the rectangular container 1' is preferably increased by about 0.01 to 0.05 mm so that the punch 11 can be inserted easily. In addition, in FIG. 2B, the receiving mold 13 moves downward while being in pressure contact with the bottom of the battery container 1 being processed to prevent the bottom of the container from being deformed, and the processed battery container 1 is placed in the receiving mold 13. It is removed from the outer mold 12 by means of the knockout pins 14 provided.
次に蓋体３について説明する。第４図はその加工工程を
示す縦断面図であり、前記電池容器１と同様に、鋼板を
絞り加工法によって周縁に素板の約０．９〜１倍の厚さ
ｔｌの立上り部３ａ、を有する蓋板１′を成型しく第４
図人）、次いで第２図Ｂによって説明したものと同様構
造のしごき加工型（図示せず）を用いてしごき加工を行
ない、厚さを減少させて立上り部３ａ、の厚さｔｌを約
９６〜７０チの厚さにしごく形状寸法を整えた立上り部
３ゐ（厚さｔｓ）を有する矩形状の蓋体３を得る（第４
図Ｂ）。次いで所定のニッケルめっきを施し、端子部を
形成して完成部品とする。上記において、蓋体３の外形
寸法の寸法規準は、原則として電池容器１の開口部内寸
法Ｌ（Ｗ）と同じとする。そのために、蓋体のしごき型
ダイス部の寸法は、電池容器１のしごき型ポンチ１１と
同寸法か僅かに小さく（〜０．０５）することによって
達せられる。Next, the lid 3 will be explained. FIG. 4 is a longitudinal cross-sectional view showing the processing process, and similarly to the battery container 1, a steel plate is drawn by a drawing method to form a rising portion 3a on the periphery with a thickness tl about 0.9 to 1 times that of the base plate. 4th molding the lid plate 1' having
(Figure 2B), then ironing is performed using an ironing die (not shown) having the same structure as that explained with reference to FIG. Obtain a rectangular lid 3 having a rising portion 32 (thickness ts) whose shape and dimensions are adjusted to a thickness of ~70 inches (fourth step).
Figure B). Next, a predetermined nickel plating is applied to form a terminal portion to form a completed part. In the above, the dimensional standard for the external dimensions of the lid body 3 is, in principle, the same as the internal dimension L (W) of the opening of the battery container 1. For this purpose, the size of the ironing type die part of the lid body can be achieved by making the size of the ironing type punch 11 of the battery container 1 the same or slightly smaller (~0.05).
上記のしごき加工によって形状を整えた電池容器１及び
蓋体３を嵌合させた場合、第１図Ｂに示した接合部６ａ
に生ずる間隙（第６図参照）は、本発明の対象とする小
型電池の場合０．０３〜ｏ、０７羽以下とすることがで
き、前記したレーザ溶接の一つの条件である間隙０．１
１ＩＩ以内を満足させることができる。上記において蓋
板１′を絞り加工する際に第４図人のごとく、立上り部
３ａ１の形状としてその下部を電池容器１の開口部の内
寸法Ｌ（Ｗ）より若干小さくすれば、蓋体３は電池容器
１の開口部に容易に安定して嵌合することができる（第
４図Ｂ参考）。従って第４図Ｃに示したように、立上り
部３１Ｌの上部外形寸法Ｌｓ（Ｌ ）が、前記開口部寸
法Ｌ（Ｗ）より約０．０５１１Ｍ以内の範囲で大きくな
っても正常な形態で押しこみ嵌合させることができる。When the battery container 1 and the lid body 3, which have been shaped by the ironing process described above, are fitted together, the joint 6a shown in FIG. 1B
The gap (see FIG. 6) that occurs in the small battery that is the object of the present invention can be 0.03 to 0.07 mm or less, and the gap of 0.1 which is one of the conditions for laser welding described above.
1II or less can be satisfied. In the above process, when drawing the lid plate 1', if the shape of the rising portion 3a1 is made slightly smaller than the inner dimension L (W) of the opening of the battery container 1, as shown in FIG. can be easily and stably fitted into the opening of the battery container 1 (see FIG. 4B). Therefore, as shown in FIG. 4C, even if the upper external dimension Ls (L) of the rising portion 31L is larger than the opening dimension L (W) by within about 0.0511M, the normal shape will not be maintained. A tight fit is possible.
故に前記した電池容器１及び蓋体の製作条件において、
型の若干の摩耗、ニッケルめっき厚さの変動によって嵌
合がきつくなった場合でも吸収することができる。また
、蓋板３′（第４図人）の外形寸法Ｌ ２（Ｗ２ ）は
、前記した立上り部３Ｊのしごき率に対応して設定する
。Therefore, under the manufacturing conditions of the battery container 1 and the lid described above,
Even if the fit becomes tight due to slight wear of the mold or variations in the thickness of the nickel plating, it can be absorbed. Further, the external dimension L 2 (W2) of the lid plate 3' (Figure 4) is set in accordance with the above-described straining rate of the rising portion 3J.
以上述べた本発明のものと、絞り加工法で成型し形状組
み合わせ選別した従来方法で得た電池容器及び蓋体を用
いて、第１図に示した形状の角形密閉式アルカリ蓄電池
を製作し比較した。電池容器の外形寸法はＬＱ＝＝ ２
６１１１１． ｗｏ＝ １０１１Ｍ、高さ４８ＭＮ、側
壁厚さ＝０．６ＭＭとし、蓋体立上り部厚さ＝ ０．５
ＭＭとしたものを用い、第１図Ｂに示したごとく接合
部６＆の上面からＹＡＧレーザ装置を用いてレーザビー
ムを照射し、溶接部６を形成密封した。A rectangular sealed alkaline storage battery having the shape shown in Fig. 1 was manufactured using the battery container and lid of the present invention described above and the battery container and lid obtained by the conventional method of forming by drawing and selecting shape combinations, and comparison was made. did. The external dimensions of the battery container are LQ==2
61111. wo=1011M, height 48MN, side wall thickness=0.6MM, lid body rising part thickness=0.5
Using a MM, a laser beam was irradiated from the upper surface of the joint 6 & using a YAG laser device as shown in FIG. 1B to form and seal the weld 6.
（以下余白）
なお表中、（→付号を付したものは、電池容器の内寸法
より蓋体の外形寸法が大きいことを示す。(Left below) In the table, items marked with (→ indicate that the external dimensions of the lid are larger than the internal dimensions of the battery container.
この場合は嵌合せずに個別に測定した。又、間隙を生じ
たものは樹脂接着後に切断して測定した。In this case, measurements were taken individually without fitting. In addition, those with gaps were cut after resin adhesion and measured.
製作した各電池をｏ、１０ｒｎムで２０時間充電した後
、溶接部からの電解液の漏出及び外観から密封性を判別
した。その結果は、第１表に示したように本発明によれ
ば、蓋体の嵌合不良及び溶接工程における不良発生率を
著しく低減できることがわわる。After each of the manufactured batteries was charged at 10 rpm for 20 hours, the sealing performance was determined from leakage of electrolyte from the welded portion and appearance. As shown in Table 1, the results show that according to the present invention, it is possible to significantly reduce the incidence of defects in the fitting of the lid and in the welding process.
なお、電池容器１をしごき加工によって得るときに、用
いた鋼材、しごき率の程度によって、作業性、型の損耗
を改善するだめに、しごき加工工程を２回以上に分けて
も本発明の目的を達することができる。Note that when obtaining the battery container 1 by ironing, depending on the steel material used and the degree of ironing, the ironing process may be divided into two or more times in order to improve workability and mold wear. can be reached.
発明の効果
以上のように本発明によれば、角形の電池容器の開口部
と蓋体の嵌合を容易にし、蓋体周縁の立上り部と電池容
器の開口部との嵌合精度を高めることができるので、レ
ーザ溶接を容易に確実にし、密封性のすぐれた信頼性の
高い角形密閉式電池を提供できるという効果が得られる
。Effects of the Invention As described above, according to the present invention, it is possible to easily fit the opening of a rectangular battery container and the lid, and to improve the fitting precision between the rising portion of the periphery of the lid and the opening of the battery container. As a result, laser welding can be performed easily and reliably, and a highly reliable prismatic sealed battery with excellent sealing performance can be provided.
第１図は本発明の実施例における角形密閉式電池を示し
、ムはその上部外観図、Ｂは人の要部側断面図、第２図
は第１図の電池に使用される本発明の角形電池容器の加
工工程を示す要部側断面を示す模式図、ムは絞り成型し
た角形容器、Ｂはしごき加工途中の状態を示す図、第３
図は第２図の工程を経て完成した本発明に使用する角形
の電池容器を示し、ムは一方の側面を示す断面図、Ｂは
他方の側面を示す断面図、Ｃはその上面図、第４図は本
発明の角形の電池容器と組み合わせる蓋体の加工状態を
示す側面断面模式図、ムは絞り成型した蓋板、Ｂはしご
き加工した蓋体及び電池容器との嵌合状態を示す断面図
、Ｃは蓋体の立上り部の拡大図、第６図、第６図、およ
び第７図は従来の密閉式電池の電池容器と電池蓋の嵌合
状態を示す要部断面図、第８図は従来の角形の電池容器
の成型形状を示す上面図である。
１・・・・・・角形の電池容器、ヂ・・・・・・角形容
器、２・・・・・・発電要素、３・・・・・・蓋体、ぎ
・・・・・・蓋板、３！Ｌ・・・・・・蓋体の立上り部
、３＆１・・・・・・しごき加工前の立上り部、４・・
・・・・電池端子、６・・・・・・溶接部、Ｓａ・・・
・・・接合部、１１・・・・・・しごき型のポンチ、１
２・・・・・・外型、１２＆・・・・・ガイド部、１２
ｂ・・・・・・ダイス部、１３・・・・・・受型、１４
・・・・・ノックアウトピン。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
Ｌｆ−一一一方力内丁迭
Ｗ４−−−１ぜ太っケ
１−−一先壇哀ま
第３図
１−＠イ喜呑
区
ｑコ
′ 派Figure 1 shows a rectangular sealed battery according to an embodiment of the present invention, M is an external view of its upper part, B is a side sectional view of the main part of a person, and Figure 2 is a battery of the present invention used in the battery of Figure 1. A schematic diagram showing a side cross section of the main part showing the processing process of a square battery container, M is a drawing-formed square container, B is a diagram showing a state in the middle of ironing process, 3rd
The figure shows a rectangular battery container used in the present invention completed through the steps shown in Figure 2, where M is a sectional view showing one side, B is a sectional view showing the other side, C is a top view, and Figure 4 is a schematic side cross-sectional view showing the processed state of the lid combined with the rectangular battery container of the present invention, M is the draw-formed lid plate, B is the cross-sectional view showing the drawn lid and the fitted state with the battery container. Figures 6 and 7 are enlarged views of the rising portion of the lid, Figures 6 and 7 are cross-sectional views of essential parts showing the fitted state of the battery container and battery lid of a conventional sealed battery, and Figure 8 The figure is a top view showing the molded shape of a conventional rectangular battery container. 1... Square battery container, Di... Square container, 2... Power generation element, 3... Lid body, G... Lid. Board, 3! L...Rising part of the lid body, 3&1...Rising part before ironing process, 4...
...Battery terminal, 6...Welding part, Sa...
... joint, 11 ... ironing type punch, 1
2... Outer mold, 12 &... Guide part, 12
b...Dice part, 13...Mold, 14
...Knockout pin. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure Lf-11-1 Rikiuchicho W4--1 Zetakka 1--Ichisendan Aima 3rd figure 1-@Ikiton-ku qco' faction
Claims (1)
立上り部を有する蓋体を嵌合し、両者の接合部を溶接し
て密封するものにおいて、電池容器及び蓋体として、金
属板を絞り成型したものをしごき加工によって形状を整
えて両者の嵌合状態を調整したものを用いたことを特徴
とする角形密閉式電池。A lid body having a rising portion on the periphery is fitted into the opening of a rectangular battery container housing a power generating element, and the joints of both are welded and sealed, and a metal plate is used as the battery container and the lid body. A prismatic sealed battery characterized by using a product that has been drawn and molded and shaped by ironing to adjust the fitting state of the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62126216A JPS63291353A (en) | 1987-05-22 | 1987-05-22 | Squared sealed-type battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62126216A JPS63291353A (en) | 1987-05-22 | 1987-05-22 | Squared sealed-type battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63291353A true JPS63291353A (en) | 1988-11-29 |
Family
ID=14929607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62126216A Pending JPS63291353A (en) | 1987-05-22 | 1987-05-22 | Squared sealed-type battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63291353A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58188050A (en) * | 1982-04-26 | 1983-11-02 | Matsushita Electric Ind Co Ltd | Manufacture of case for cell |
| JPS61169120A (en) * | 1985-01-22 | 1986-07-30 | Canon Inc | Base body for image preserving part |
-
1987
- 1987-05-22 JP JP62126216A patent/JPS63291353A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58188050A (en) * | 1982-04-26 | 1983-11-02 | Matsushita Electric Ind Co Ltd | Manufacture of case for cell |
| JPS61169120A (en) * | 1985-01-22 | 1986-07-30 | Canon Inc | Base body for image preserving part |
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