JP3447088B2 - Manufacturing method of prismatic sealed storage battery - Google Patents
Manufacturing method of prismatic sealed storage batteryInfo
- Publication number
- JP3447088B2 JP3447088B2 JP26784193A JP26784193A JP3447088B2 JP 3447088 B2 JP3447088 B2 JP 3447088B2 JP 26784193 A JP26784193 A JP 26784193A JP 26784193 A JP26784193 A JP 26784193A JP 3447088 B2 JP3447088 B2 JP 3447088B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- welding
- batteries
- sides
- welded
- 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
- 238000003860 storage Methods 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000003466 welding Methods 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 5
- 238000007796 conventional method Methods 0.000 description 6
- 239000011324 bead Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010959 steel 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
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
- H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
-
- 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
- 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】
【０００１】
【産業上の利用分野】本発明は、角形密閉式蓄電池の製
造方法に係わり、さらに詳しくはその電池容器と電池蓋
との接合部分の溶接方法の改良に関する。
【０００２】
【従来の技術】従来、角形密閉式蓄電池の電池容器と電
池蓋との接合部分の溶接にあたっては、特開昭６４−３
９５４号公報に示されるように、電池容器と電池蓋との
接合部分を全周連続して溶接していたため、電池をＸＹ
テーブルで移動させるか（つまり、上記接合部分の一辺
を溶接する場合は電池を載置したテーブルを直線状に移
動させ、次の隣接する一辺を溶接する場合には電池を載
置したテーブルを先の移動方向に対して直交する方向に
移動させる）、あるいはレーザー光線の出射側をＸＹ方
向に移動させていた。
【０００３】そのため、ＸＹテーブルの慣性モーメント
などによる加減速によって溶接ビード（数珠状に連続し
た溶接部分）の粗密が生じやすく、その結果、溶接不良
が発生し、ひいては電解液の漏出を引き起こすという問
題があった。
【０００４】また、四つの角部を直線部分と同程度に溶
接するには、角部の溶接速度にあわせて直線部分の溶接
速度も７〜１２ｍｍ／秒程度の低速に抑えなくてはなら
ず、そのため、高価なレーザー溶接機の有する能力を充
分に活用できず、生産性に欠け、生産コストを高くさせ
る原因になっていた。
【０００５】
【発明が解決しようとする課題】上記のように従来の角
形密閉式蓄電池の製造においては、溶接不良が生じやす
く、また、その溶接にあたってレーザー溶接機の有する
能力を充分に活用することができないため、生産性に欠
け、生産コストが高くなるという問題があった。
【０００６】したがって、本発明は、上記のような従来
の角形密閉式蓄電池の製造時における問題点を解消し、
溶接不良の発生が少なく、かつ生産性よく角形密閉式蓄
電池を製造する方法を提供することを目的とする。
【０００７】
【課題を解決するための手段】本発明は、角形密閉式蓄
電池の電池容器と電池蓋との接合部分の溶接にあたり、
１個の電池についてその全周をいわゆる一筆書きに連続
して溶接するのではなく、複数個の電池について、接合
部分の４辺のうち平行する２辺を同時にレーザー光線で
連続的に溶接し、つぎに残りの２辺が溶接できるように
複数個の電池を並び変え、それら複数個の電池を前記同
様に直線状に移動させながら、それら複数個の電池の残
りの２辺を同時にレーザー溶接で連続的に溶接すること
により、上記目的を達成したものである。
【０００８】すなわち、本発明では、複数個の電池につ
いて、その電池容器と電池蓋との接合部分の４辺のうち
平行する２辺を連続的に溶接し、その後、それら複数個
の電池を並び変え、残りの２辺を同時に連続的に溶接す
るので、電池の移動速度を一定にできるようになり、そ
の結果、溶接ビードの粗密化が解消されて、溶接ビード
の密度が一定になり、溶接不良の発生が防止される。
【０００９】また、上記のように電池容器と電池蓋との
接合部分の４辺を２つに分けて直線状に溶接するように
したことにより、角部の溶接にあわせて全体の溶接速度
を低速に抑える必要がなくなり、電池の移動速度をレー
ザー溶接機の有する能力にあわせて高めることができ、
しかも溶接に際して電池を複数個連続して並べるので、
電池の位置合わせやレーザー発振器の原点出しに要する
時間を大幅に短縮することが可能になり、生産性を向上
させることができる。
【００１０】しかも、レーザー光線をビームスプリッタ
で２つに分け、接合部分の４辺のうち平行する２辺に同
時に照射して溶接するので、単位時間当りの溶接長さを
長くすることができ、より一層生産性を高めることがで
きる。
【００１１】本発明においては、電池容器と電池蓋との
接合部分を直線状にして溶接するので、その角部の溶接
がどのように行われるかを説明する必要があるが、通常
の小形電池では、角部のＲ（アール）は大きい場合でも
０．２ｍｍ程度であり、レーザー光線の先端の幅が０．
５ｍｍ程度あって、レーザー光線の幅の方が広いので、
接合部分を直線状に溶接しても、角部を充分に溶接する
ことができる。
【００１２】
【実施例】つぎに、本発明の実施例を図面を参照しつつ
説明する。ただし、本発明は実施例に例示のもののみに
限定されることはない。
【００１３】図１は本発明に係る角形密閉式蓄電池の一
例を示す概略斜視図である。図中、１はニッケル鋼板で
作製された電池容器であり、この電池容器１にはセパレ
ータに包まれた正極板を負極板で挾持させ最外側に負極
板が配置されるように積層化された極板群と電解液が収
容されていて、その開口部には電池蓋２が嵌合されてい
る。そして、電池蓋２の中央の突出部は端子２ａであ
り、この実施例に示すものでは、正極側の端子である。
【００１４】この電池の平面形状は長方形状であって、
その長辺の長さは１７ｍｍ、短辺の長さは６ｍｍであ
り、上記のように電池容器１の開口部に電池蓋２を嵌合
した後、その電池容器１と電池蓋２との接合部分を下記
に示すようにレーザー光線で溶接して密閉することによ
り完成した電池にされる。
【００１５】図２は本発明の角形密閉式蓄電池の製造に
あたり電池容器１と電池蓋２との接合部分を溶接する際
の状態を示す平面図であり、図３はその側面図である。
【００１６】まず、電池容器１の開口部に電池蓋２を嵌
合した状態の電池Ａを直線状に定速移動するコンベヤ
（図示せず）上に載置し、図２に示すように電池を連続
的に並べる。そして、図３に示すように、電池Ａを矢示
方向に移動させながら、レーザー光線３を集光レンズ４
を介して電池容器１と電池蓋２との接合部分に照射し、
溶接して密閉する。
【００１７】その際、集光レンズ４の手前の部分にビー
ムスプリッタを追加配置することによって、レーザー光
線を２つに分け、同じ強さのレーザー光線を同時に２箇
所、すなわち接合部分の４辺のうち平行する２辺に照射
するので、生産性をより一層高めることができる。
【００１８】そして、図２に示すようにして、電池容器
１と電池蓋２との接合部分の長辺の溶接が済むと、電池
を上記接合部分の短辺がレーザー溶接できるように並び
変えて、同様に直線状に移動させながら溶接して密閉す
る。また、逆に、電池容器１と電池蓋２との接合部分の
短辺を先にレーザー溶接してから、長辺をレーザー溶接
することももちろんできる。
【００１９】上記実施例に示す方法と、従来法（つま
り、４辺全周をいわゆる一筆書きで連続的に溶接する方
法）とによって、溶接したときの溶接不良の発生を調べ
た結果を表１に示す。
【００２０】
【表１】
【００２１】レーザー出力は実施例、従来法とも、１０
０Ｗであって、同じである。
【００２２】溶接速度は、実施例が１４ｍｍ／秒であ
り、１個の電池の溶接に要する時間は電池の位置合わせ
とレーザー発振器の原点出しを含めて５秒であったが、
従来法では溶接速度が８ｍｍ／秒で、個々の電池の位置
合わせと原点出しに時間がかかったため、１個の電池の
溶接に要する時間は１２秒であった。
【００２３】そして、上記表１に示すように、従来法で
は、溶接をゆっくりとしているにもかかわらず、溶接不
良率が１０％も発生したのに対し、本発明の実施例で
は、溶接時間が短いにもかかわらず、溶接不良の発生が
まったくなかった。なお、従来法による溶接不良の発生
箇所はほとんどが角部であった。このように、角部に溶
接不良が集中したのは、電池を載置したＸＹテーブルの
慣性モーメントと該テーブルを移動させるモータの起動
との不整合などによるものと思われる。
【００２４】
【発明の効果】以上説明したように、本発明では、前記
構成の採用により、電池容器と電池蓋との接合部分の溶
接に際してレーザー光線を定速で照射できるようにな
り、その結果、溶接ビードの粗密化が解消されて、溶接
ビードの密度が一定になり、溶接不良の発生が防止さ
れ、溶接品質を向上させることができるようになった。
【００２５】また、本発明によれば、前記構成の採用に
より、角部の溶接にあわせて全体の溶接速度を低速に抑
える必要がなくなったので、溶接速度を高めることがで
きるようになり、しかも、溶接に際し電池を複数個連続
して並べるので、電池の位置合わせとレーザー発振器の
原点出しに要する時間を大幅に短縮することができるよ
うになり、生産性を高めることができ、その結果、角形
密閉式蓄電池を安価に提供できるようになった。
【００２６】従来法に従い、電池容器と電池蓋との接合
部分の溶接をいわゆる一筆書きで全周連続して行う場合
には、角部の溶接にあわせて溶接速度を低速に抑えなけ
ればならなかったため、電池の形状、サイズなどによっ
ても異なるが、溶接速度が７〜１２ｍｍ／秒になり、ま
た個々の電池の位置合わせとレーザー発振器の原点出し
に時間がかかるため、１個の電池の溶接に８〜１２秒間
要したが、本発明による場合は溶接速度が約２割向上
し、電池の形状、サイズなどによっても異なるが、溶接
速度が１０〜１５ｍｍ／秒になり、また電池の位置合わ
せとレーザー発振器の原点出しに要する時間が大幅に短
縮できるので、１個の電池の溶接に要する時間は４〜８
秒に短縮できるようになった。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a rectangular sealed storage battery, and more particularly to an improvement in a method for welding a joint portion between a battery container and a battery lid. . 2. Description of the Related Art Conventionally, in welding a joint portion between a battery container and a battery cover of a rectangular sealed storage battery, Japanese Unexamined Patent Publication No.
No. 954, the joint between the battery container and the battery lid was continuously welded all around, so that the battery was
Move the table with the battery (that is, when welding one side of the above joint, move the table on which the battery is placed in a straight line, and when welding the next adjacent side, move the table on which the battery is placed first. In the direction orthogonal to the moving direction of the laser beam), or the laser beam emission side is moved in the XY directions. [0003] Therefore, the acceleration and deceleration due to the moment of inertia of the XY table and the like tend to cause unevenness of the weld bead (bead-shaped continuous welded portion), resulting in poor welding and leakage of the electrolyte. was there. In order to weld the four corners to the same degree as the straight part, the welding speed of the straight part must be suppressed to a low speed of about 7 to 12 mm / sec in accordance with the welding speed of the corner. For this reason, the ability of the expensive laser welding machine cannot be fully utilized, resulting in low productivity and high production cost. [0005] As described above, in the production of the conventional rectangular sealed storage battery, poor welding is liable to occur, and the ability of the laser welding machine is fully utilized for the welding. Therefore, there is a problem that productivity is lacking and production costs increase. Accordingly, the present invention solves the above-mentioned problems in the production of the conventional rectangular sealed storage battery,
It is an object of the present invention to provide a method for producing a rectangular sealed storage battery with less occurrence of poor welding and high productivity. SUMMARY OF THE INVENTION The present invention relates to welding of a joint between a battery container and a battery cover of a rectangular sealed storage battery.
Rather than continuously welding the entire circumference of one battery in a so-called one-stroke stroke, for a plurality of batteries, two parallel sides of the four sides of the joint portion are continuously welded simultaneously with a laser beam, and then A plurality of batteries are rearranged so that the remaining two sides can be welded, and while the plurality of batteries are moved linearly in the same manner as described above, the remaining two sides of the plurality of batteries are simultaneously welded by laser welding. The above object has been achieved by selective welding. That is, according to the present invention, two parallel sides of the four sides of the joint portion between the battery container and the battery lid are continuously welded to a plurality of batteries, and then the plurality of batteries are arranged. In this case, the remaining two sides are welded simultaneously and continuously, so that the moving speed of the battery can be kept constant. As a result, the density of the weld bead is reduced, and the density of the weld bead becomes constant. The occurrence of defects is prevented. Further, as described above, the four sides of the joint portion between the battery container and the battery lid are divided into two parts and are welded linearly, so that the overall welding speed can be adjusted in accordance with the welding of the corners. It is no longer necessary to keep the speed low, and the moving speed of the battery can be increased according to the ability of the laser welding machine.
Moreover, since a plurality of batteries are continuously arranged during welding,
The time required for the alignment of the battery and the search for the origin of the laser oscillator can be greatly reduced, and the productivity can be improved. In addition, since the laser beam is divided into two by the beam splitter, and two parallel sides of the four sides of the joint portion are simultaneously irradiated and welded, the welding length per unit time can be increased. Productivity can be further improved. In the present invention, since the joint between the battery container and the battery cover is welded in a straight line, it is necessary to explain how the corners are welded. In this case, even if the R (R) of the corner is large, it is about 0.2 mm, and the width of the tip of the laser beam is 0.
Since there is about 5mm and the width of the laser beam is wider,
Even if the joint is welded in a straight line, the corner can be sufficiently welded. Next, an embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to only those illustrated in the embodiments. FIG. 1 is a schematic perspective view showing an example of a rectangular sealed storage battery according to the present invention. In the drawing, reference numeral 1 denotes a battery container made of a nickel steel plate, and the battery container 1 was laminated such that a positive electrode plate wrapped in a separator was sandwiched by a negative electrode plate and a negative electrode plate was disposed on the outermost side. The electrode group and the electrolyte are accommodated, and the battery cover 2 is fitted in the opening. The protruding portion at the center of the battery cover 2 is a terminal 2a, and in this embodiment, a terminal on the positive electrode side. The planar shape of this battery is rectangular,
The length of the long side is 17 mm and the length of the short side is 6 mm. After the battery cover 2 is fitted into the opening of the battery case 1 as described above, the joining of the battery case 1 and the battery cover 2 is performed. The battery is completed by welding and sealing the parts with a laser beam as shown below. FIG. 2 is a plan view showing a state in which the joint between the battery case 1 and the battery cover 2 is welded in manufacturing the prismatic sealed storage battery of the present invention, and FIG. 3 is a side view thereof. First, the battery A with the battery cover 2 fitted in the opening of the battery container 1 is placed on a conveyor (not shown) that moves linearly at a constant speed, and the battery A as shown in FIG. Are arranged continuously. Then, as shown in FIG. 3, while moving the battery A in the direction of the arrow, the laser beam 3 is focused on the condenser lens 4.
Irradiates the joint portion between the battery container 1 and the battery lid 2 through
Weld and seal. At this time, by additionally arranging a beam splitter in front of the condenser lens 4, the laser beam is divided into two, and laser beams of the same intensity are simultaneously emitted at two places, that is, parallel among the four sides of the joint portion. Since the two sides are irradiated, the productivity can be further improved. Then, as shown in FIG. 2, when the long side of the joint between the battery container 1 and the battery lid 2 is welded, the batteries are rearranged so that the short side of the joint can be laser-welded. Similarly, welding is performed while moving in a straight line, and sealing is performed. Conversely, it is also possible to perform laser welding on the short side of the joint between the battery container 1 and the battery lid 2 first, and then perform laser welding on the long side. Table 1 shows the results of examining the occurrence of poor welding at the time of welding using the method shown in the above embodiment and the conventional method (that is, a method of continuously welding the entire circumference of four sides with a single stroke). Shown in [Table 1] The laser output is 10 in both the embodiment and the conventional method.
0W, which is the same. The welding speed was 14 mm / sec in the embodiment, and the time required for welding one battery was 5 seconds including the positioning of the battery and the origin setting of the laser oscillator.
In the conventional method, the welding speed was 8 mm / sec, and it took a long time to position and locate the origin of each battery, so that the time required for welding one battery was 12 seconds. As shown in Table 1, in the conventional method, the welding failure rate was as high as 10% despite the slow welding, whereas in the embodiment of the present invention, the welding time was short. Despite its short length, no welding defects occurred. It should be noted that most of the locations where poor welding was caused by the conventional method were corners. It is considered that the poor welding concentration at the corners was caused by a mismatch between the moment of inertia of the XY table on which the batteries were placed and the activation of the motor for moving the table. As described above, according to the present invention, by employing the above-described structure, it becomes possible to irradiate a laser beam at a constant speed when welding a joint portion between a battery container and a battery lid. The densification of the weld bead was eliminated, the density of the weld bead became constant, the occurrence of poor welding was prevented, and the weld quality could be improved. Further, according to the present invention, by employing the above configuration, it is not necessary to suppress the entire welding speed to a low speed in accordance with the welding of the corners, so that the welding speed can be increased, and Since a plurality of batteries are continuously arranged during welding, the time required for positioning the batteries and finding the origin of the laser oscillator can be greatly reduced, and productivity can be increased. Sealed storage batteries can now be provided at low cost. According to the conventional method, when the joint between the battery container and the battery lid is welded continuously in a single stroke with a single stroke, the welding speed must be kept low in accordance with the welding of the corners. Therefore, although it depends on the shape and size of the battery, the welding speed is 7 to 12 mm / sec, and it takes time to align each battery and find the origin of the laser oscillator. It took 8 to 12 seconds, but in the case of the present invention, the welding speed was improved by about 20%, and depending on the shape and size of the battery, the welding speed was 10 to 15 mm / sec. Since the time required to find the origin of the laser oscillator can be greatly reduced, the time required to weld one battery is 4 to 8
Can be reduced to seconds.
【図面の簡単な説明】
【図１】本発明に係る角形密閉式蓄電池の一例を示す概
略斜視図である。
【図２】本発明において、電池容器と電池蓋との接合部
分を溶接する際の状態を示す平面図である。
【図３】本発明において、電池容器と電池蓋との接合部
分を溶接する際の状態を示す側面図である。
【符号の説明】
１ 電池容器
２ 電池蓋
２ａ 端子BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing an example of a rectangular sealed storage battery according to the present invention. FIG. 2 is a plan view showing a state in which a joint portion between a battery container and a battery lid is welded in the present invention. FIG. 3 is a side view showing a state where the joint between the battery container and the battery lid is welded in the present invention. [Description of Signs] 1 Battery container 2 Battery cover 2a Terminal
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 2/04 H01M 2/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. 7 , DB name) H01M 2/04 H01M 2/02
Claims (1)
備えた電池蓋（２）を、発電要素が収容された断面形状
が四角形の電池容器（１）の開口部に嵌合した後、その
電池容器（１）と電池蓋（２）との接合部分をレーザー
光線で溶接して密閉する角形密閉式蓄電池を複数個連続
して製造するにあたり、電池容器（１）の開口部に電池
蓋（２）を嵌合した状態の複数個の電池を直線状に定速
移動するコンベヤ上に載置して連続的に並べ、それら複
数個の電池を直線状に移動させながら、まず、それら複
数個の電池の電池容器（１）と電池蓋（２）との接合部
分の４辺のうち平行する２辺を同時にレーザー光線で連
続的に溶接し、つぎに残りの２辺が溶接できるように複
数個の電池を並び変え、それら複数個の電池を前記と同
様に直線状に移動させながら、それら複数個の電池の残
りの２辺を同時にレーザー光線で連続的に溶接して密閉
することを特徴とする角形密閉式蓄電池の製造方法。(57) [Claim 1] A battery cover ( 2 ) having a terminal ( 2a ) of one electrode provided on an upper part thereof is provided with a battery container ( 1 ) having a rectangular cross section in which a power generating element is housed. ) , And a plurality of square sealed storage batteries that are sealed by welding the joint between the battery container ( 1 ) and the battery lid ( 2 ) with a laser beam.
In manufacturing the battery, the battery is placed in the opening of the battery container (1).
Constant speed linear operation of multiple batteries with lid (2) fitted
Place them on a moving conveyor and arrange them continuously.
While moving several batteries in a straight line, first
Of the four sides of the joint between the battery case ( 1 ) and the battery cover ( 2 ) of several batteries, two parallel sides are simultaneously connected with a laser beam.
Weld continuously and then duplicate so that the remaining two sides can be welded.
Rearrange several batteries and replace them with the same
A method for manufacturing a rectangular sealed storage battery, characterized in that the remaining two sides of the plurality of batteries are continuously welded and sealed simultaneously with a laser beam while being moved linearly as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26784193A JP3447088B2 (en) | 1993-09-29 | 1993-09-29 | Manufacturing method of prismatic sealed storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26784193A JP3447088B2 (en) | 1993-09-29 | 1993-09-29 | Manufacturing method of prismatic sealed storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0799043A JPH0799043A (en) | 1995-04-11 |
| JP3447088B2 true JP3447088B2 (en) | 2003-09-16 |
Family
ID=17450372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26784193A Expired - Fee Related JP3447088B2 (en) | 1993-09-29 | 1993-09-29 | Manufacturing method of prismatic sealed storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3447088B2 (en) |
Families Citing this family (3)
| 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 |
| CN113767512B (en) * | 2019-03-29 | 2023-12-29 | 三洋电机株式会社 | Power supply device, electric vehicle provided with same, power storage device, and method for manufacturing power supply device |
| CN114171829B (en) * | 2022-02-11 | 2022-05-03 | 中创新航科技股份有限公司 | Battery and battery device |
-
1993
- 1993-09-29 JP JP26784193A patent/JP3447088B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0799043A (en) | 1995-04-11 |
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