CN215266464U - Welding structure of steel shell cylindrical battery - Google Patents
Welding structure of steel shell cylindrical battery Download PDFInfo
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- CN215266464U CN215266464U CN202120768544.8U CN202120768544U CN215266464U CN 215266464 U CN215266464 U CN 215266464U CN 202120768544 U CN202120768544 U CN 202120768544U CN 215266464 U CN215266464 U CN 215266464U
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- laser welding
- explosion
- welding spots
- shaped
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- 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
Abstract
The utility model relates to a welded structure of box hat cylinder battery, including setting up explosion-proof piece in the box hat cylinder battery and the connection piece that is located explosion-proof piece downside, put through the central point that sets up in explosion-proof piece between explosion-proof piece and the connection piece to the combination formula laser solder joint that comprises circular or convex solder joint and sharp or convex solder joint realizes connecting. The welding structure increases the welding area and the reliability, and the consistency of the explosion-proof pressure is better.
Description
Technical Field
The utility model relates to a welded structure of box hat cylinder battery.
Background
The current interrupt device (chinese name is current cut-off device) welding method of the existing steel shell cylindrical battery is continuous welding at the CID center position by a pulse laser, and the shape is circular. However, due to the fact that a round angle exists at the circle (area A in fig. 2) after the die is punched, the consistency of positioning CID of assembly equipment and the like, the contact between the connecting sheet and the explosion-proof sheet is poor at a welding point, so that the welding stability is poor, the actual welding area is small, and the consistency of explosion-proof pressure is poor.
Disclosure of Invention
An object of the utility model is to provide a welded structure of box hat cylinder battery, this welded structure has increased welding area and reliability, and explosion-proof pressure's uniformity is better.
The technical scheme of the utility model lies in: the utility model provides a welded structure of box hat cylinder battery, is including setting up explosion-proof piece in the box hat cylinder battery and the connection piece that is located explosion-proof piece downside, put through the central point that sets up in explosion-proof piece between explosion-proof piece and the connection piece to the combination formula laser welding spot that constitutes by circular or convex solder joint plus straight line or convex solder joint realizes connecting.
Furthermore, the combined laser welding spots are graphic laser welding spots or character type laser welding spots.
Furthermore, the graphic laser welding spots consist of C-shaped laser welding spots and linear or arc-shaped laser welding spots located in an area surrounded by the C-shaped laser welding spots.
Furthermore, the character-shaped laser welding spots are S-shaped and comprise straight line or arc-shaped laser welding spots, and two ends of each straight line or arc-shaped laser welding spot are respectively connected with one arc-shaped laser welding spot.
Further, the combined laser welding spot is formed by continuously welding the semiconductor laser at the central position of the explosion-proof sheet.
Furthermore, a cover plate which covers the pattern laser welding spots or the character type laser welding spots is arranged on the lower side of the connecting sheet.
Compared with the prior art, the utility model has the advantages of it is following: because the combination tightness of the middle is superior to that of the edge, the middle is additionally welded by straight lines or circular arcs, the welding area and the reliability are increased, and the consistency of explosion-proof pressure is better.
Drawings
FIG. 1 is a schematic structural view of a conventional cylindrical battery (with a cover removed);
fig. 2 is a schematic cross-sectional view of a conventional cylindrical battery;
FIG. 3 is a schematic structural view of the patterned laser spot of the present invention (with the cover removed);
fig. 4 is a cross-sectional view taken along line B-B of fig. 3 in accordance with the present invention;
FIG. 5 is a schematic structural view of the character-type laser welding spot of the present invention (removing the cover sheet);
fig. 6 is a cross-sectional view of fig. 5, taken along line C-C, in accordance with the present invention.
Detailed Description
In order to make the aforementioned features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Refer to fig. 3 to 6
The utility model provides a welded structure of box hat cylinder battery, is including setting up explosion-proof piece 11 in box hat cylinder battery 10 and the connection piece 12 that is located explosion-proof piece downside, put through the central point that sets up in explosion-proof piece between explosion-proof piece and the connection piece to by circular or convex solder joint with the combination formula laser welding spot realization connection that sharp or convex solder joint constitutes, thereby through increase sharp or circular arc welding point in the centre, increase welding area and reliability, let explosion-proof pressure's uniformity better.
In this embodiment, the combined laser welding spot is a graphic laser welding spot or a character type laser welding spot.
In this embodiment, when the laser welding spots are graphic laser welding spots, the laser welding spots are composed of C-shaped laser welding spots 13 and linear or arc-shaped laser welding spots 14 located in an area surrounded by the C-shaped laser welding spots; wherein, the central line of the linear or arc laser welding spot is vertical to the central line of the opening of the C-shaped laser welding spot. See fig. 3, 4.
In this embodiment, when the laser welding spot is a character-shaped laser welding spot, the character-shaped laser welding spot is S-shaped, and includes a linear or arc-shaped laser welding spot 15, and two ends of the linear or arc-shaped laser welding spot are respectively connected with an arc-shaped laser welding spot 16, so as to form an S-shape, thereby increasing a welding area and improving reliability. See fig. 4, 5.
In this embodiment, the middle of the connecting sheet is provided with a welding counter bore, and the combined laser welding spot is arranged on
The combined laser welding spot is formed by continuously welding a semiconductor laser at the center of the explosion-proof sheet.
In this embodiment, a cover 17 covering the pattern laser welding spot or the character laser welding spot is disposed on the lower side of the connection sheet.
The welding structure adopts a semiconductor laser to continuously weld at the center position of a CID, and forms a pattern or character type through a combination mode of a circular welding spot and a linear welding spot. Because the tight type of combination in the middle of connection piece and the explosion-proof piece is superior to the edge, the middle straight line or circular arc welding point that increases has increased welding area and reliability, and the uniformity of explosion-proof pressure is better.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (6)
1. The utility model provides a welded structure of box hat cylinder battery, is including setting up explosion-proof piece in the box hat cylinder battery and the connection piece that is located explosion-proof piece downside, its characterized in that, put through the central point that sets up in explosion-proof piece between explosion-proof piece and the connection piece to the combination formula laser welding spot that constitutes by circular or convex solder joint plus straight line or convex solder joint realizes connecting.
2. The welded structure of cylindrical steel-shelled batteries according to claim 1, characterized in that the combined laser welding spots are pattern laser welding spots or character type laser welding spots.
3. The welded structure of cylindrical steel-shell batteries according to claim 2, wherein said pattern laser welding spots are composed of C-shaped laser welding spots and linear or arc-shaped laser welding spots located in the area enclosed by the C-shaped laser welding spots.
4. The welding structure of the cylindrical battery with a steel shell according to claim 2, wherein the character-shaped laser welding spots are S-shaped and comprise linear or arc-shaped laser welding spots, and two ends of each linear or arc-shaped laser welding spot are respectively connected with one arc-shaped laser welding spot.
5. The welded structure of cylindrical cell with steel shell as claimed in claim 1, 2, 3 or 4, wherein the combined laser welding spot is formed by continuously welding semiconductor laser at the center position of the explosion-proof sheet.
6. The welded structure of cylindrical steel-shelled batteries according to claim 1, characterized in that a cover plate covering the pattern laser welding spots or the character laser welding spots is further arranged on the lower side of the connecting sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768544.8U CN215266464U (en) | 2021-04-15 | 2021-04-15 | Welding structure of steel shell cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768544.8U CN215266464U (en) | 2021-04-15 | 2021-04-15 | Welding structure of steel shell cylindrical battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215266464U true CN215266464U (en) | 2021-12-21 |
Family
ID=79508796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120768544.8U Active CN215266464U (en) | 2021-04-15 | 2021-04-15 | Welding structure of steel shell cylindrical battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215266464U (en) |
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2021
- 2021-04-15 CN CN202120768544.8U patent/CN215266464U/en active Active
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