CN115041897A - Horizontal automatic penetration welding equipment for full-lug large-cylinder lithium battery - Google Patents
Horizontal automatic penetration welding equipment for full-lug large-cylinder lithium battery Download PDFInfo
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- CN115041897A CN115041897A CN202210668187.7A CN202210668187A CN115041897A CN 115041897 A CN115041897 A CN 115041897A CN 202210668187 A CN202210668187 A CN 202210668187A CN 115041897 A CN115041897 A CN 115041897A
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- Prior art keywords
- battery cell
- fixed
- full
- lug
- welding equipment
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Links
- 238000003466 welding Methods 0.000 title claims abstract description 55
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 21
- 230000035515 penetration Effects 0.000 title claims abstract description 20
- 239000000779 smoke Substances 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to the technical field of lithium battery welding, in particular to horizontal automatic penetration welding equipment for a full-lug large-cylinder lithium battery, which comprises a swing rod pushing assembly, a vibrating mirror welding machine, a battery cell positioning support and a battery cell pushing support, wherein the swing rod pushing assembly is arranged on the swing rod pushing assembly; the galvanometer welding machine, the battery cell positioning support and the battery cell pushing support are sequentially arranged along the linear direction; the battery core pushing support is connected with a sliding table in a sliding manner; the sliding table is connected with a top rod; a battery cell positioning sleeve is fixed on the battery cell positioning support; the swing rod pushing assembly can push the sliding table to slide along the direction of the battery cell positioning sleeve. When the structure is used, the battery cores with different lengths can be welded under the condition that the jig is not required to be replaced, so that the products welded by the battery core welding equipment are more diversified.
Description
Technical Field
The invention relates to the technical field of lithium battery welding, in particular to horizontal automatic penetration welding equipment for a full-lug large-cylinder lithium battery.
Background
The penetration welding mechanism is commonly used in the welding of lithium batteries; before welding the battery, the battery needs to be positioned and oriented by a positioning mechanism, clamped and fixed, and conveyed to a light beam range penetrating through a welding machine; and then welding is performed using a penetration welder. The existing penetrating welder positioning mechanisms are positioned at two ends through a jig; the positioning mechanism cannot be adjusted according to the length change of the battery core; different size jigs all need to be changed to each not unidimensional electric core, delays the production progress.
Disclosure of Invention
The invention aims to provide horizontal automatic penetration welding equipment for a full-lug large-cylinder lithium battery, aiming at the defects and shortcomings of the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention relates to horizontal automatic penetration welding equipment for a full-lug large-cylinder lithium battery, which comprises a swing rod pushing assembly, a vibrating mirror welding machine, a battery cell positioning support and a battery cell pushing support; the galvanometer welding machine, the battery cell positioning support and the battery cell pushing support are sequentially arranged along a linear direction;
the battery cell push-out support is connected with a sliding table in a sliding manner; the sliding table is connected with a top rod; a battery cell positioning sleeve is fixed on the battery cell positioning support; the pendulum rod promotes the subassembly and can promote the slip table and slide along electric core location sleeve's direction.
Furthermore, the swing rod pushing assembly comprises a front fixed seat, a swing rod rotatably connected to the front fixed seat and a sliding plate slidably connected to the front fixed seat; a push rod is fixed between the sliding plate and the sliding table; a connecting plate is fixed on the sliding plate; the tail end of the swing rod can slide along the height direction of the connecting plate.
Furthermore, a strip-shaped hole extending along the height direction is formed in the connecting plate; the tail end of the swing rod is rotatably connected with a roller embedded into the strip-shaped hole; the diameter of the roller is equal to the width of the strip-shaped hole.
Further, a cylinder and a guide rail are fixed on the sliding table; the guide rail is connected with a push block in a sliding manner; the ejector rod is fixed on the push block; and the piston rod end of the air cylinder is fixed on the push block.
Further, the swing rod is in an L shape.
Furthermore, a top rod guide seat is fixed on the sliding table; and a connecting rod which is in sliding connection with the ejector rod guide seat is fixed between the ejector rod and the push block.
Furthermore, a support rod is fixed between the galvanometer welding machine and the battery core positioning support.
Furthermore, a sleeve seat guide rail is fixed on the battery cell positioning support; the sleeve seat guide rail is connected with a sleeve seat in a sliding manner; the battery cell positioning sleeve is connected to the sleeve seat; and a locking piece capable of being locked on the battery cell positioning support is fixed on the sleeve seat.
Furthermore, the battery core positioning sleeve is locked and fixed on the sleeve seat through a plurality of bolts.
Furthermore, a smoke exhaust pipe is fixed on the battery cell positioning support; the smoke exhaust pipe is communicated with the battery cell positioning sleeve.
After adopting the structure, the invention has the beneficial effects that: according to the horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery, when the equipment is used, a battery cell is conveyed to a position between the ejector rod and the battery cell positioning sleeve; the swing rod pushing assembly pushes a push rod on the sliding table to do linear motion, and the battery cell is pushed into the battery cell positioning sleeve through the push rod to be positioned; welding the battery cell positioned in the battery cell positioning sleeve by using a light beam generated by a galvanometer welding machine; this structure can weld the electric core of different length under the condition that need not to change the tool for electric core welding equipment welded product is more diversified.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of a galvanometer welding machine;
FIG. 3 is a left side view of a galvanometer welding machine;
fig. 4 is a structural diagram of the mechanism for adjusting the initial position of the ejector rod after the battery cell is pushed out of the support;
FIG. 5 is a structural diagram of the swing link and the sliding plate connected to the front fixing seat;
description of reference numerals:
1. a battery cell positioning support; 2. a mandril guide seat; 3. connecting a push block; 4. a push rod; 5. a slide plate;
6. a cylinder; 7. a top rod; 8. a galvanometer welding machine; 801. a support bar; 9. a swing rod;
10. pushing the battery core out of the support; 11. a smoke exhaust pipe; 12. a battery cell positioning sleeve; 13. a sliding table;
14. a push block; 15. a connecting rod; 16. a guide rail; 17. a front fixed seat; 18. a slide guide rail;
19. a connecting plate; 1901. a strip-shaped hole; 20. a roller; 21. a sleeve seat; 22. a sleeve mount guide rail;
A. a light beam; B. and (5) battery cores.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 5, the horizontal automatic penetration welding device for the full-tab large cylindrical lithium battery comprises a swing rod pushing assembly, a galvanometer welding machine 8, a battery cell positioning support 1 and a battery cell pushing support 10; the galvanometer welding machine 8, the battery cell positioning support 1 and the battery cell pushing support 10 are sequentially arranged along a linear direction;
the battery cell push-out support 10 is connected with a sliding table 13 in a sliding manner; the sliding table 13 is connected with a mandril 7; a battery cell positioning sleeve 12 is fixed on the battery cell positioning support 1; the swing rod pushing assembly can push the sliding table 13 to slide along the direction of the cell positioning sleeve 12;
the galvanometer welding machine 8 has no essential difference from the prior art, so the details are not described; the battery core B is conveyed to a position between the ejector rod 7 and the battery core positioning sleeve 12; the swing rod pushing assembly pushes the ejector rod 7 on the sliding table 13 to do linear motion, and the battery core B is pushed into the battery core positioning sleeve 12 through the ejector rod 7 for positioning; then, welding the battery core B positioned in the battery core positioning sleeve 12 by using a light beam A generated by the galvanometer welding machine 8; this structure can weld the electric core of different length under the condition that need not to change the tool for electric core welding equipment welded product is more diversified.
As a preferred mode of the present invention, the swing link pushing assembly comprises a front fixing seat 17, a swing link 9 rotatably connected to the front fixing seat 17, and a sliding plate 5 slidably connected to the front fixing seat 17; a push rod 4 is fixed between the sliding plate 5 and the sliding table 13; a connecting plate 19 is fixed on the sliding plate 5; the tail end of the swing rod 9 can slide along the height direction of the connecting plate 19;
a sliding plate guide rail 18 is fixed on the front fixed seat 17; a sliding block which is in sliding connection with a sliding plate guide rail 18 is fixed at the bottom of the sliding plate 5; an external power mechanism pushes the swing rod 9 to swing, so that the swing rod 9 slides along the height direction of the connecting plate 19, and the horizontal direction fractional motion of the swing rod 9 pushes the sliding plate 5 to slide along the sliding plate guide rail 18; the sliding table 13 is pushed to slide by the push rod 4.
In a preferred embodiment of the present invention, the connecting plate 19 is provided with a strip-shaped hole 1901 extending in the height direction; the tail end of the swing rod 9 is rotatably connected with a roller 20 embedded into the strip-shaped hole 1901; the diameter of the roller 20 is equal to the width of the strip-shaped hole 1901; the rotatable roller 20 is inserted into the strip-shaped hole 1901, so that the end of the swing link 9 can slide along the height direction of the connecting plate 19.
In a preferred embodiment of the present invention, the sliding table 13 is fixed with a cylinder 6 and a guide rail 16; the guide rail 16 is connected with a push block 14 in a sliding way; the ejector rod 7 is fixed on the push block 14; the piston rod end of the cylinder 6 is fixed on the push block 14; after the cylinder 6 is started, the push block 14 and the push rod 7 are driven to slide along the length direction of the guide rail 16; adjusting the initial position of the mandril 7; after the battery cell B enters between the ejector rod 7 and the battery cell positioning sleeve 12, one end of a current collecting disc of the battery cell B is closer to the ejector rod 7, so that the stroke of the sliding plate 5 in the process that the battery cell B is pushed into the battery cell positioning sleeve 12 is reduced; the efficiency of pushing the battery cell B into the battery cell positioning sleeve 12 is improved.
In a preferred embodiment of the present invention, the swing link 9 is in an "L" shape.
As a preferred mode of the present invention, a mandril guide seat 2 is fixed on the sliding table 13; a connecting rod 15 which is in sliding connection with the ejector rod guide seat 2 is fixed between the ejector rod 7 and the push block 14;
the ejector rod 7 slides on the ejector rod guide seat 2 through the connecting rod 15, and the guide of the ejector rod 7 is realized.
As a preferred mode of the invention, a support rod 801 is fixed between the galvanometer welding machine 8 and the electric core positioning support 1; the spacing of the battery cell positioning support 1 by the support rod 801 enables the gap between the battery cell positioning support 1 and the galvanometer welding machine 8 to be consistent all the time; because the end of the cell positioning sleeve 12 is provided with a structure for limiting the cell B, the limiting structure prevents the cell B from moving forward after the end (the welded end) of the cell B away from the current collecting plate reaches the limiting structure; and ensuring that the welding position of each cell B can reach the same intensity position of the light beam A.
As a preferred mode of the invention, a sleeve seat guide rail 22 is fixed on the battery cell positioning support 1; the sleeve seat guide rail 22 is connected with a sleeve seat 21 in a sliding manner; the battery cell positioning sleeve 12 is connected to the sleeve seat 21; a locking piece capable of being locked on the battery cell positioning support 1 is fixed on the sleeve seat 21; the locking piece is a screw which is in threaded connection with the sleeve seat 21, and after the screw is tightly pressed against the dent on the surface of the battery cell positioning support 1, the sleeve seat 21 cannot slide relative to the sleeve seat guide rail 22; when the distance between the battery cell positioning sleeve 12 and the galvanometer welding machine 8 needs to be adjusted to adjust the illumination intensity of the welding point, the locking piece is loosened, so that the sleeve seat 21 slides relative to the sleeve seat guide rail 22.
As a preferred mode of the invention, the battery cell positioning sleeve 12 is fixed on the sleeve seat 21 by multiple bolts; according to the different diameters of the battery cell B, the battery cell positioning sleeve 12 with different inner hole sizes can be replaced after the bolt is loosened, and the battery cell B with more specifications can be adapted.
As a preferred mode of the invention, a smoke exhaust pipe 11 is fixed on the battery cell positioning support 1; the smoke exhaust pipe 11 is communicated with the battery core positioning sleeve 12; the smoke exhaust pipe 11 is connected to negative pressure equipment, and when welding, smoke or dust in the cell positioning sleeve 12 is exhausted to the outside of the cell positioning sleeve 12 through the smoke exhaust pipe 11.
When the battery cell positioning device is used, the battery cell is conveyed between the ejector rod and the battery cell positioning sleeve; an external power mechanism pushes the swing rod to swing, the idler wheel slides in the strip-shaped hole, the horizontal direction of the swing rod moves to push the sliding plate to slide along the sliding plate guide rail, the push rod on the sliding table is pushed by the push rod to do linear motion, and the battery core is pushed into the battery core positioning sleeve to be positioned through the push rod; welding the battery cell positioned well in the battery cell positioning sleeve by using a light beam generated by the galvanometer welding machine; this structure can weld the electric core of different length under the condition that need not to change the tool for electric core welding equipment welded product is more diversified. Before the product enters between the ejector rod and the battery cell positioning sleeve; the push block and the ejector rod are driven to slide along the length direction of the guide rail after the cylinder is started; adjusting the initial position of the ejector rod; after the battery cell enters the space between the ejector rod and the battery cell positioning sleeve, one end of the current collecting disc of the battery cell is closer to the ejector rod.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a horizontal automatic penetration welding equipment of big cylinder lithium cell of full utmost point ear which characterized in that: the device comprises a swing rod pushing assembly, a galvanometer welding machine (8), a battery cell positioning support (1) and a battery cell pushing support (10); the galvanometer welding machine (8), the battery cell positioning support (1) and the battery cell pushing support (10) are sequentially arranged along a linear direction;
the battery cell push-out support (10) is connected with a sliding table (13) in a sliding manner; the sliding table (13) is connected with a top rod (7); a battery cell positioning sleeve (12) is fixed on the battery cell positioning support (1); the swing rod pushing assembly can push the sliding table (13) to slide along the direction of the battery cell positioning sleeve (12).
2. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery according to claim 1 is characterized in that: the swing rod pushing assembly comprises a front fixed seat (17), a swing rod (9) rotatably connected on the front fixed seat (17) and a sliding plate (5) slidably connected on the front fixed seat (17); a push rod (4) is fixed between the sliding plate (5) and the sliding table (13); a connecting plate (19) is fixed on the sliding plate (5); the tail end of the swing rod (9) can slide along the height direction of the connecting plate (19).
3. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery as claimed in claim 2, characterized in that: a strip-shaped hole (1901) extending along the height direction is formed in the connecting plate (19); the tail end of the swing rod (9) is rotatably connected with a roller (20) embedded into the strip-shaped hole (1901); the diameter of the roller (20) is equal to the width of the strip-shaped hole (1901).
4. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery as claimed in claim 2, characterized in that: a cylinder (6) and a guide rail (16) are fixed on the sliding table (13); the guide rail (16) is connected with a push block (14) in a sliding way; the ejector rod (7) is fixed on the push block (14); and the piston rod end of the air cylinder (6) is fixed on the push block (14).
5. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery as claimed in claim 2, characterized in that: the swing rod (9) is L-shaped.
6. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery as claimed in claim 4, characterized in that: a mandril guide seat (2) is fixed on the sliding table (13); a connecting rod (15) which is in sliding connection with the ejector rod guide seat (2) is fixed between the ejector rod (7) and the push block (14).
7. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery according to claim 1 is characterized in that: and a support rod (801) is fixed between the galvanometer welding machine (8) and the electric core positioning support (1).
8. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery according to claim 1 is characterized in that: a sleeve seat guide rail (22) is fixed on the battery cell positioning support (1); the sleeve seat guide rail (22) is connected with a sleeve seat (21) in a sliding way; the battery cell positioning sleeve (12) is connected to the sleeve seat (21); and a locking piece capable of being locked on the battery cell positioning support (1) is fixed on the sleeve seat (21).
9. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery according to claim 8 is characterized in that: the battery core positioning sleeve (12) is locked and fixed on the sleeve seat (21) through a plurality of bolts.
10. The horizontal automatic penetration welding equipment for the full-lug large-cylinder lithium battery according to claim 1 is characterized in that: a smoke exhaust pipe (11) is fixed on the battery cell positioning support (1); the smoke exhaust pipe (11) is communicated with the battery cell positioning sleeve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210668187.7A CN115041897A (en) | 2022-06-14 | 2022-06-14 | Horizontal automatic penetration welding equipment for full-lug large-cylinder lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210668187.7A CN115041897A (en) | 2022-06-14 | 2022-06-14 | Horizontal automatic penetration welding equipment for full-lug large-cylinder lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115041897A true CN115041897A (en) | 2022-09-13 |
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ID=83162086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210668187.7A Pending CN115041897A (en) | 2022-06-14 | 2022-06-14 | Horizontal automatic penetration welding equipment for full-lug large-cylinder lithium battery |
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| Country | Link |
|---|---|
| CN (1) | CN115041897A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880351Y (en) * | 2006-03-22 | 2007-03-21 | 深圳市比克电池有限公司 | Laser welding clamp of battery |
| CN105643178A (en) * | 2016-03-15 | 2016-06-08 | 温州智元知识产权管理有限公司 | Cylindrical lithium battery and collector welding machine achieving reliable battery cell feeding |
| CN107160038A (en) * | 2017-05-26 | 2017-09-15 | 惠州市三协精密有限公司 | A kind of battery core welding equipment |
| CN108637478A (en) * | 2018-05-15 | 2018-10-12 | 合肥国轩高科动力能源有限公司 | Rotary welding positioning device for lithium ion cylindrical battery cover plate |
| CN108890129A (en) * | 2018-08-02 | 2018-11-27 | 合肥国轩高科动力能源有限公司 | Semi-automatic welding machine for cylindrical battery core and current collecting disc |
| CN209110384U (en) * | 2018-09-01 | 2019-07-16 | 深圳市中基自动化有限公司 | A kind of cylindrical lithium battery nut cap welding mechanism |
| CN110394552A (en) * | 2019-08-29 | 2019-11-01 | 武汉逸飞激光设备有限公司 | Current collecting plates welder |
| CN212599667U (en) * | 2020-06-30 | 2021-02-26 | 联动天翼新能源有限公司 | Cylindrical battery laser welding device |
| CN114346424A (en) * | 2021-11-08 | 2022-04-15 | 天津空间电源科技有限公司 | Lithium ion cylinder electricity core utmost point ear welding set |
-
2022
- 2022-06-14 CN CN202210668187.7A patent/CN115041897A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880351Y (en) * | 2006-03-22 | 2007-03-21 | 深圳市比克电池有限公司 | Laser welding clamp of battery |
| CN105643178A (en) * | 2016-03-15 | 2016-06-08 | 温州智元知识产权管理有限公司 | Cylindrical lithium battery and collector welding machine achieving reliable battery cell feeding |
| CN107160038A (en) * | 2017-05-26 | 2017-09-15 | 惠州市三协精密有限公司 | A kind of battery core welding equipment |
| CN108637478A (en) * | 2018-05-15 | 2018-10-12 | 合肥国轩高科动力能源有限公司 | Rotary welding positioning device for lithium ion cylindrical battery cover plate |
| CN108890129A (en) * | 2018-08-02 | 2018-11-27 | 合肥国轩高科动力能源有限公司 | Semi-automatic welding machine for cylindrical battery core and current collecting disc |
| CN209110384U (en) * | 2018-09-01 | 2019-07-16 | 深圳市中基自动化有限公司 | A kind of cylindrical lithium battery nut cap welding mechanism |
| CN110394552A (en) * | 2019-08-29 | 2019-11-01 | 武汉逸飞激光设备有限公司 | Current collecting plates welder |
| CN212599667U (en) * | 2020-06-30 | 2021-02-26 | 联动天翼新能源有限公司 | Cylindrical battery laser welding device |
| CN114346424A (en) * | 2021-11-08 | 2022-04-15 | 天津空间电源科技有限公司 | Lithium ion cylinder electricity core utmost point ear welding set |
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