JPH07183011A - Manufacture of square sealed battery - Google Patents
Manufacture of square sealed batteryInfo
- Publication number
- JPH07183011A JPH07183011A JP5324015A JP32401593A JPH07183011A JP H07183011 A JPH07183011 A JP H07183011A JP 5324015 A JP5324015 A JP 5324015A JP 32401593 A JP32401593 A JP 32401593A JP H07183011 A JPH07183011 A JP H07183011A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- sealing body
- battery
- insulating packing
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000003466 welding Methods 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000012856 packing Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 10
- 230000035515 penetration Effects 0.000 claims description 9
- 230000006866 deterioration Effects 0.000 abstract description 5
- 239000003792 electrolyte Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 229910003307 Ni-Cd Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910005580 NiCd Inorganic materials 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000009783 overcharge test Methods 0.000 description 1
- 230000002093 peripheral effect Effects 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
-
- 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
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- 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)
- Gas Exhaust Devices For Batteries (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、角形密閉電池の製造方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a prismatic sealed battery.
【０００２】[0002]
【従来の技術】ニカド電池（ニッケルカドミウム二次電
池）の後継としてニッケル水素電池が採用されてきてい
る。このニッケル水素電池は、ニカド電池に比べて単位
体積当たりのエネルギ容量が高く、且つ諸特性について
もニカド電池に遜色のない特性を有している。2. Description of the Related Art A nickel hydrogen battery has been adopted as a successor to a nicad battery (nickel cadmium secondary battery). The nickel-hydrogen battery has a higher energy capacity per unit volume than the Ni-Cd battery and has various characteristics comparable to those of the Ni-Cd battery.
【０００３】ところで、通常のニカド電池、ニッケル水
素電池は、円筒形とされているために機器への収納に際
して収納効率が悪く、特に、小型軽量化を図っているコ
ードレス機器においては大きな問題となってきている。
そこで、機器への収納効率を高めるようにした角形の電
池が使用されてきている。角形密閉電池は、図６に示す
ように偏平な直方体状をなし、例えば、高さは、円筒形
電池と同じ高さ、長側面１ａは円筒電池の直径と同じ長
さ、短側面１ｂは長側面１ａの１／３の長さとされてお
り、３個並べると円筒形電池１個分を収納するスペース
に相当する大きさとなるように形成されている。そし
て、外装缶１内に発電要素が嵌挿され、電解液が注入さ
れた後矩形状の上部開口端１ｃに封口体２が嵌合装着さ
れ、全周を溶接されて密閉構造とされている。By the way, the ordinary NiCd battery and the nickel-hydrogen battery have a cylindrical shape, so that the storage efficiency is poor when they are stored in the device, and this is a big problem especially in cordless devices which are small and lightweight. Is coming.
Therefore, a prismatic battery has been used so as to improve the storage efficiency in the device. The prismatic closed battery has a flat rectangular parallelepiped shape as shown in FIG. 6. For example, the height is the same as that of the cylindrical battery, the long side surface 1a is the same as the diameter of the cylindrical battery, and the short side surface 1b is long. The length is one-third of the side surface 1a, and when three pieces are arranged, they are formed to have a size corresponding to a space for accommodating one cylindrical battery. Then, the power generation element is fitted in the outer can 1, and after the electrolytic solution is injected, the sealing body 2 is fitted and attached to the rectangular upper opening end 1c, and the entire circumference is welded to form a hermetically sealed structure. .
【０００４】封口体２は、矩形状の蓋板３と、この蓋板
３の中央に絶縁パッキン（ガスケット）４を介して嵌合
装着され、下端が発電要素の陽極集電体が接続されるリ
ード板と共に蓋板３に固定されたリベット（図示せず）
と、このリベット上面に溶着固定され、各長側面１ａに
臨む各側面の各下端に夫々ガスの逃げ孔５ａが設けられ
た陽極キャップ５と、当該陽極キャップ５に内蔵された
安全弁等により構成されている。The sealing body 2 is fitted and attached to a rectangular lid plate 3 and an insulating packing (gasket) 4 at the center of the lid plate 3, and a lower end thereof is connected to an anode current collector of a power generating element. Rivet (not shown) fixed to the lid plate 3 together with the lead plate
And an anode cap 5 welded and fixed to the upper surface of the rivet and provided with gas escape holes 5a at the lower ends of the side surfaces facing the long side surfaces 1a, and a safety valve incorporated in the anode cap 5 and the like. ing.
【０００５】外装缶１と封口体２の蓋板３との溶接方法
としては、シーム溶接やアーク溶接が従来から広く行わ
れているが、溶接部近辺の発電要素、ガスケット等への
熱影響を抑えるため、近年は微細加工に適したパルス式
レーザ溶接方法が採用されている。ここで、溶接条件と
しては、溶け込み深さが0.15mm以上であり（例えば、特
公平４−１９６０４９号公報）、溶接位置は、外装缶１
の開口端と封口体２の蓋板３との嵌合部の隙間の中央を
溶接している。As a method of welding the outer can 1 and the lid plate 3 of the sealing body 2, seam welding or arc welding has been widely used from the past. However, thermal influence on power generating elements, gaskets and the like in the vicinity of the welded portion is affected. In order to suppress it, a pulsed laser welding method suitable for fine processing has been adopted in recent years. Here, as the welding conditions, the penetration depth is 0.15 mm or more (for example, Japanese Examined Patent Publication No. 4-196049), and the welding position is the outer can 1.
The center of the gap of the fitting portion between the open end of the cover and the cover plate 3 of the sealing body 2 is welded.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、外装缶
１の開口端と封口体２の蓋板３との嵌合部の隙間の中央
を溶接する方法は、外装缶１と封口体２との溶接強度は
向上するものの、外装缶１の長側面１ａ側では蓋板３と
の溶接部が絶縁パッキン４に近くなるために、溶接時の
熱の影響により、前縁パッキン４が劣化してしまい、内
部の電解液が漏出し、当該電池を組み込んだ機器を損傷
させる虞れがあるという問題がある。However, the method of welding the center of the gap between the open end of the outer can 1 and the lid plate 3 of the sealing body 2 is performed by welding the outer can 1 and the sealing body 2. Although the strength is improved, the welded portion with the lid plate 3 is close to the insulating packing 4 on the long side surface 1a side of the outer can 1, so the front edge packing 4 is deteriorated due to the influence of heat during welding, There is a problem that the electrolyte solution inside may leak out and damage the equipment incorporating the battery.
【０００７】本発明は上述の点に鑑みてなされたもの
で、外装缶と封口体との溶接時における絶縁パッキンへ
の熱影響を少なくして劣化を防止するようにした角形密
閉電池の製造方法を提供することを目的とする。The present invention has been made in view of the above points, and is a method for manufacturing a prismatic sealed battery in which the thermal influence on the insulating packing during welding of the outer can and the sealing body is reduced to prevent deterioration. The purpose is to provide.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に本発明によれば、角形の外装缶に発電要素を収納し、
蓋板に絶縁パッキンを介して安全弁を内蔵した陽極キャ
ップを設けた封口体を嵌合装着し、前記外装缶の開口端
と前記蓋体との嵌合部をレーザ溶接して封口する角形密
閉電池の製造方法において、前記開口端と前記蓋体との
溶接位置を前記絶縁パッキンの近辺において嵌合部より
も外側に0.05mm乃至0.07mmずらして溶接するようにした
ものである。To achieve the above object, according to the present invention, a power generating element is housed in a rectangular outer can,
A rectangular sealed battery in which a sealing body provided with an anode cap having a built-in safety valve is fitted and mounted on a cover plate through an insulating packing, and the fitting portion between the opening end of the outer can and the lid is laser-welded to seal. In the manufacturing method described above, the welding position of the opening end and the lid body is shifted by 0.05 mm to 0.07 mm to the outside of the fitting portion in the vicinity of the insulating packing, and the welding is performed.
【０００９】そして、レーザ溶接は、溶接位置を外側に
ずらした部分と、他の溶接部分との出力を変えることに
より何れの溶接部分においても溶け込み深さを0.15mm以
上とすることが好ましい。In laser welding, it is preferable that the penetration depth is 0.15 mm or more in any of the welded portions by changing the output between the portion where the welding position is shifted to the outside and the other welded portions.
【００１０】[0010]
【作用】外装缶の長側面側開口端と封口体とをレーザ溶
接する際に、溶接位置を少なくとも絶縁パッキンの近傍
においては、外方に0.05mm乃至0.07mmずらし、且つ溶け
込み深さを0.15mm以上とする。これによりレーザ溶接時
の熱影響による絶縁パッキンの劣化が防止され、溶接封
口部からの電解液の漏出が防止される。[Operation] When laser welding the long side opening end of the outer can and the sealing body, the welding position is shifted outward by at least 0.05 mm to 0.07 mm, and the penetration depth is 0.15 mm, at least in the vicinity of the insulating packing. That is all. As a result, deterioration of the insulating packing due to the influence of heat during laser welding is prevented, and leakage of the electrolytic solution from the weld sealing portion is prevented.
【００１１】[0011]
【実施例】以下本発明の一実施例を添付図面に基づいて
詳述する。尚、図４と同一部材には同一符号を付してあ
る。図１及び図２は、本発明を適用した角形密閉電池の
上部断面を示し、外装缶１は、直方体状をなし、且つ開
口端１ａは矩形状をなして形成されている。この外装缶
１の開口端１ａには封口体２が嵌合装着されており、開
口端１ａと封口体２とはレーザ溶接により全周に亘りシ
ーム溶接されて密閉構造とされている。そして、外装缶
１は、例えば、ステンレス或いは、ニッケルメッキ鋼板
により一体に形成されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The same members as those in FIG. 4 are designated by the same reference numerals. 1 and 2 show an upper cross-section of a prismatic sealed battery to which the present invention is applied. The outer can 1 has a rectangular parallelepiped shape, and the open end 1a has a rectangular shape. A sealing body 2 is fitted and attached to the opening end 1a of the outer can 1, and the opening end 1a and the sealing body 2 are seam-welded over the entire circumference by laser welding to form a closed structure. The outer can 1 is integrally formed of, for example, stainless steel or a nickel-plated steel plate.
【００１２】封口体２は、蓋板３と、当該蓋板３の中央
に穿設された孔３ａに絶縁パッキン４を介して液密に嵌
合さ装着され、下端が発電要素６の陽極集電体が接続さ
れるリード板７の一端と共に蓋板３にカシメ固定され、
中央に小孔８ａが穿設されたリベット８と、当該リベッ
ト８上に配設固定され外装缶１の長側面１ａに臨む各側
面の各下端の略中央に夫々ガスの逃げ孔５ａが設けられ
た陽極キャップ５と、当該陽極キャップ５に内蔵されリ
ベット８の孔８ａを閉塞する安全弁９等により構成され
ている。蓋板３も、外装缶１と同様ステンレス或いはニ
ッケルメッキ鋼板により形成されている。The sealing body 2 is mounted in a lid plate 3 and a hole 3a formed at the center of the lid plate 3 in a liquid-tight manner via an insulating packing 4, and the lower end thereof is an anode collector of the power generating element 6. It is fixed to the cover plate 3 by caulking together with one end of the lead plate 7 to which the electric body is connected,
A rivet 8 having a small hole 8a formed in the center, and a gas escape hole 5a are provided substantially at the center of each lower end of each side face fixed to the long side face 1a of the outer can 1 arranged and fixed on the rivet 8. The anode cap 5 includes a safety valve 9 which is built in the anode cap 5 and closes the hole 8a of the rivet 8. The lid plate 3 is also made of stainless steel or a nickel-plated steel plate, like the outer can 1.
【００１３】以下外装缶１と封口体２の蓋板３との溶接
方法について説明する。外装缶１の開口端１ｃの短側面
１ｂ側と封口体２の蓋板３との嵌合部は、図１及び図３
に示すようにガスケット４からの距離が長く、絶縁パッ
キン４は、溶接時における熱の影響を受けにくい。従っ
て、当該部分の溶接に際しては、レーザ光線Ｌを嵌合部
の中央を走査させて行っても特に問題はない。尚、レー
ザ光線Ｌは、パルス式のレーザ光線である。A method of welding the outer can 1 and the cover plate 3 of the sealing body 2 will be described below. The fitting portion between the short side surface 1b side of the opening end 1c of the outer can 1 and the lid plate 3 of the sealing body 2 is shown in FIGS.
As shown in, the distance from the gasket 4 is long, and the insulating packing 4 is less susceptible to heat during welding. Therefore, when welding the portion, there is no particular problem even if the laser beam L is made to scan the center of the fitting portion. The laser beam L is a pulsed laser beam.
【００１４】外装缶１の開口端１ｃの長側面１ａ側と封
口体２の蓋板３との嵌合部は、図２及び図４に示すよう
に絶縁パッキン４からの距離が近く、従って、絶縁パッ
キン４は、溶接時における熱の影響を受け易い。そこ
で、当該部分の溶接に際しては、レーザ光線Ｌを嵌合部
の中央から所定の距離Ｗだけ外側即ち、絶縁パッキン４
から離れた位置を走査させる。このときの溶接ビード１
０の溶け込みを深さｈは、0.15mm以上とする。ここに、
溶け込み深さｈは、外装缶１の開口端１ｃ及び蓋体３の
上面から当該開口端１ｃの内面と蓋体３の端面との当接
部における溶接されている部分までの深さをいう。The fitting portion between the long side surface 1a of the opening end 1c of the outer can 1 and the lid plate 3 of the sealing body 2 is close to the insulating packing 4 as shown in FIGS. The insulating packing 4 is easily affected by heat during welding. Therefore, when welding the relevant portion, the laser beam L is placed outside the center of the fitting portion by a predetermined distance W, that is, the insulating packing 4
Scan a position away from. Weld bead 1 at this time
The penetration depth of 0 is 0.15 mm or more. here,
The penetration depth h refers to the depth from the upper surface of the open end 1c of the outer can 1 and the upper surface of the lid 3 to the welded portion at the contact portion between the inner surface of the open end 1c and the end surface of the lid 3.
【００１５】図５は、溶接位置のずれｗと絶縁パッキン
４の周辺部及び溶接封口部の漏液不良発生率の関係をま
とめたもので、溶接位置ｗのずれが、0.05mm未満の場合
は、封口溶接部の漏液発生率は無くなるが、レーザ溶接
時の熱影響で絶縁パッキン４等が劣化してしまい、漏液
発生率が高くなり、漏液に至る可能性がある。また、溶
接位置ｗのずれが0.08mmを超えた場合には、絶縁パッキ
ン４部の漏液発生率は無くなるが、レーザ光線Ｌの出力
を上げても十分な溶け込み深さが得られず、溶接封口部
の漏液発生率が高くなり、漏液の可能性がある。FIG. 5 summarizes the relationship between the welding position deviation w and the liquid leakage defect occurrence rate at the periphery of the insulating packing 4 and the weld sealing portion. When the deviation of the welding position w is less than 0.05 mm. Although the leakage rate of the sealing welded portion disappears, the insulating packing 4 and the like deteriorate due to the heat effect during laser welding, and the leakage rate may increase, possibly leading to leakage. Further, when the deviation of the welding position w exceeds 0.08 mm, the leakage rate of the insulating packing 4 part disappears, but even if the output of the laser beam L is increased, a sufficient penetration depth cannot be obtained, and the welding The rate of liquid leakage at the sealing part is high, which may cause liquid leakage.
【００１６】従って、図５から明らかなように溶接位置
の外側へのずれｗを0.05〜0.07mmの範囲とし、溶け込み
深さｈを0.15mm以上の範囲とすることが好ましい。尚、
レーザ溶接は、溶接位置を外側にずらした部分と、他の
溶接部分との出力を変えることにより何れの溶接部分に
おいても溶け込み深さｈが0.15mm以上となるようにす
る。Therefore, as is apparent from FIG. 5, it is preferable that the deviation w of the welding position to the outside is in the range of 0.05 to 0.07 mm and the penetration depth h is in the range of 0.15 mm or more. still,
In laser welding, the penetration depth h is set to 0.15 mm or more in any of the welded portions by changing the output between the portion where the welding position is shifted to the outside and the other welded portions.
【００１７】また、長側面１ａ側における溶接位置は、
少なくとも絶縁パッキン４の近傍をずらせれば良く、当
該長側面１ａの全長に亘りずらす必要はない。尚、図５
において、○印は、溶接封口部の漏液発生率を示し、●
印は、絶縁パッキン４部の漏液発生率を示す。また、本
発明による製造方法における電池をＡ、Ｂ、Ｃ、絶縁パ
ッキン４近傍において溶接位置をずらさない従来の製造
方法による電池をＤとして、夫々ｎ＝100 個試作して過
充電試験を行ない、絶縁パッキン周辺部及び溶接封口部
の漏液不良発生率を比較した結果を表１に示す。この表
１から明らかなように、本発明方法による製造方法で試
作した電池には、漏液不良の発生は見られなかったが、
従来の製造方法で試作した電池は、絶縁パッキンの劣化
に起因する約３３％の漏液不良が見られた。The welding position on the long side 1a side is
It is sufficient to shift at least the vicinity of the insulating packing 4, and it is not necessary to shift the long side surface 1a over the entire length. Incidentally, FIG.
In, the ○ mark indicates the rate of liquid leakage at the weld seal,
The mark indicates the leakage generation rate of the insulating packing 4 part. Further, the batteries in the manufacturing method according to the present invention are A, B and C, and the battery by the conventional manufacturing method in which the welding position is not shifted in the vicinity of the insulating packing 4 is D, and n = 100 prototypes are prepared and an overcharge test is conducted. Table 1 shows the result of comparing the leakage failure occurrence rates of the insulating packing peripheral portion and the welded sealing portion. As is clear from Table 1, no battery leakage was found in the battery prototyped by the manufacturing method according to the present invention.
In the battery manufactured by the conventional manufacturing method, about 33% of defective liquid leakage due to deterioration of the insulating packing was observed.
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【発明の効果】以上説明したように本発明によれば、外
装缶への封口体の溶接時に絶縁パッキンの熱影響をなく
し、劣化を防止することができ、信頼性の高い角形密閉
電池を製造することが可能となるという効果がある。As described above, according to the present invention, it is possible to eliminate the heat effect of the insulating packing during welding of the sealing body to the outer can and prevent deterioration, and to manufacture a highly reliable prismatic sealed battery. There is an effect that it becomes possible to do.
【図１】本発明に係る角形密閉電池の陽極キャップを含
む上部断面図である。FIG. 1 is a top sectional view of a prismatic sealed battery according to the present invention including an anode cap.
【図２】図１の矢線ＩＩ−ＩＩに沿う断面図である。FIG. 2 is a sectional view taken along the line II-II in FIG.
【図３】図１の溶接部の拡大図である。FIG. 3 is an enlarged view of the welded portion of FIG. 1.
【図４】図２の溶接部の拡大図である。FIG. 4 is an enlarged view of the welded portion of FIG.
【図５】図４の溶接位置ずれとガスケットの漏液発生率
及び溶接封口部の漏液発生率を示すグラフである。5 is a graph showing the welding position shift, the leakage rate of the gasket, and the leakage rate of the welded seal portion in FIG.
【図６】角形密閉電池の外装缶の開口端と封口体との嵌
合部の溶接を示す上部斜視図である。FIG. 6 is an upper perspective view showing welding of the fitting portion between the opening end of the outer can of the prismatic sealed battery and the sealing body.
１ 外装缶 ２ 封口体 ３ 蓋板 ４ ガスケット ５ 陽極キャップ ５ａ 切欠 ６ 発電要素 ８ リベット ９ 安全弁 １０ 溶接ビード 1 Outer Can 2 Sealing Body 3 Lid Plate 4 Gasket 5 Anode Cap 5a Notch 6 Power Generation Element 8 Rivet 9 Safety Valve 10 Weld Bead
───────────────────────────────────────────────────── フロントページの続き (72)発明者 星野 耕一 福島県いわき市常磐下船尾町杭出作23−６ 古河電池株式会社いわき事業所内 (72)発明者 樋之津 直義 福島県いわき市常磐下船尾町杭出作23−６ 古河電池株式会社いわき事業所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koichi Hoshino, Jobanshita, Iwaki, Fukushima Prefecture Joban Shimo, Funao Town, 23-6 Furukawa Battery Co., Ltd., Iwaki Plant (72) Naoyoshi Hinotsu, Jobanshita, Iwaki, Fukushima Prefecture 23-6 Furukawa Battery Co., Ltd. Iwaki Plant
Claims (2)
に絶縁パッキンを介して安全弁を内蔵した陽極キャップ
を設けた封口体を嵌合装着し、前記外装缶の開口端と前
記蓋体との嵌合部をレーザ溶接して封口する角形密閉電
池の製造方法において、 前記開口端と前記蓋体との溶接位置を前記絶縁パッキン
の近辺において嵌合部よりも外側に0.05mm乃至0.07mmず
らして溶接することを特徴とする角形密閉電池の製造方
法。1. A prismatic outer can holds the power generating element, and a cover plate is fitted with a sealing body provided with an anode cap having a built-in safety valve via an insulating packing, and the opening end of the outer can and the lid are attached. In a method for manufacturing a rectangular sealed battery in which a fitting portion with a body is sealed by laser welding, a welding position between the opening end and the lid body is 0.05 mm to 0.07 outside the fitting portion in the vicinity of the insulating packing. A method for manufacturing a prismatic sealed battery, which comprises shifting and welding mm.
にずらした部分と、他の溶接部分との出力を変えること
により何れの溶接部分においても溶け込み深さを0.15mm
以上とすることを特徴とする請求項１記載の角形密閉電
池の製造方法。2. In the laser welding, the penetration depth is 0.15 mm in any of the welded portions by changing the output between the portion where the welding position is shifted to the outside and the other welded portion.
The method for manufacturing a prismatic sealed battery according to claim 1, wherein the method is as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324015A JP3069761B2 (en) | 1993-12-22 | 1993-12-22 | Manufacturing method of prismatic sealed battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324015A JP3069761B2 (en) | 1993-12-22 | 1993-12-22 | Manufacturing method of prismatic sealed battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07183011A true JPH07183011A (en) | 1995-07-21 |
| JP3069761B2 JP3069761B2 (en) | 2000-07-24 |
Family
ID=18161191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5324015A Expired - Lifetime JP3069761B2 (en) | 1993-12-22 | 1993-12-22 | Manufacturing method of prismatic sealed battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3069761B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5879416A (en) * | 1995-03-13 | 1999-03-09 | Nippondenso Co., Ltd. | Method of manufacturing battery having polygonal case |
| JP2003187859A (en) * | 2001-12-13 | 2003-07-04 | Matsushita Electric Ind Co Ltd | Square-shape battery and manufacturing method therefor |
| JP2010238672A (en) * | 1997-11-24 | 2010-10-21 | Samsung Sdi Co Ltd | Secondary battery |
| JP2011181215A (en) * | 2010-02-26 | 2011-09-15 | Hitachi Vehicle Energy Ltd | Square battery, and manufacturing method thereof |
| US8178235B2 (en) | 2005-04-26 | 2012-05-15 | Samsung Sdi Co., Ltd. | Battery with cap plate having inclined edge |
| JP2013542567A (en) * | 2010-12-07 | 2013-11-21 | エルジー・ケム・リミテッド | Cap assembly and secondary battery using the same |
| US9373825B2 (en) | 2010-09-30 | 2016-06-21 | Gs Yuasa International Ltd. | Cell and method for manufacturing cell |
| WO2023089869A1 (en) * | 2021-11-16 | 2023-05-25 | パナソニックＩｐマネジメント株式会社 | Battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056358A (en) * | 1983-09-05 | 1985-04-01 | Sanyo Electric Co Ltd | Sealing method for battery |
| JPH03295156A (en) * | 1990-04-12 | 1991-12-26 | Matsushita Electric Ind Co Ltd | Manufacture of rectangular battery |
-
1993
- 1993-12-22 JP JP5324015A patent/JP3069761B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6056358A (en) * | 1983-09-05 | 1985-04-01 | Sanyo Electric Co Ltd | Sealing method for battery |
| JPH03295156A (en) * | 1990-04-12 | 1991-12-26 | Matsushita Electric Ind Co Ltd | Manufacture of rectangular battery |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5879416A (en) * | 1995-03-13 | 1999-03-09 | Nippondenso Co., Ltd. | Method of manufacturing battery having polygonal case |
| JP2010238672A (en) * | 1997-11-24 | 2010-10-21 | Samsung Sdi Co Ltd | Secondary battery |
| JP2003187859A (en) * | 2001-12-13 | 2003-07-04 | Matsushita Electric Ind Co Ltd | Square-shape battery and manufacturing method therefor |
| US8178235B2 (en) | 2005-04-26 | 2012-05-15 | Samsung Sdi Co., Ltd. | Battery with cap plate having inclined edge |
| JP2011181215A (en) * | 2010-02-26 | 2011-09-15 | Hitachi Vehicle Energy Ltd | Square battery, and manufacturing method thereof |
| US9373825B2 (en) | 2010-09-30 | 2016-06-21 | Gs Yuasa International Ltd. | Cell and method for manufacturing cell |
| JP2013542567A (en) * | 2010-12-07 | 2013-11-21 | エルジー・ケム・リミテッド | Cap assembly and secondary battery using the same |
| WO2023089869A1 (en) * | 2021-11-16 | 2023-05-25 | パナソニックＩｐマネジメント株式会社 | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3069761B2 (en) | 2000-07-24 |
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