Spot welding device for assembling and processing lithium battery

Abstract

The utility model relates to the field of lithium battery assembly, and discloses a spot welding device for lithium battery assembly processing, which comprises a supporting table, two first moving plates are slidably connected to the upper surface of the supporting table, two second moving plates are slidably connected to the upper surface of the supporting table, and limiting grooves are formed in the side surfaces of the two first moving plates in a penetrating manner; the two second moving plates slide relative to the inner wall of the limiting groove, a nickel strap pressing plate is slidably connected to the side surface of the first moving plate, a first door-shaped frame is fixedly connected to the upper surface of the supporting table, and a second door-shaped frame is slidably connected to the inner top surface of the first door-shaped frame; a sliding block is slidably connected to the inner top face of the second door-shaped frame, the sliding block is slidably connected with a welding box through two hydraulic rods, and two spot welding heads are fixedly connected to the lower surface of the welding box. According to the lithium battery spot welding device, different numbers of lithium batteries can be conveniently and stably fixed, so that the spot welding efficiency and the spot welding quality are improved.

Description

Technical Field

[0001] The present application relates to the field of lithium battery assembly, and particularly to a spot welding device for lithium battery assembly and processing. Background Art

[0002] A lithium battery is a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution. Lithium battery packs under different application requirements are assembled by spot welding different numbers of lithium batteries. During the assembly and processing of lithium batteries, the spot welding device has an important impact on the performance, safety, and production efficiency of the batteries;

[0003] However, most of the existing devices perform spot welding by manually fixing the batteries by workers. It is difficult to stably limit and fix different numbers of lithium batteries through a fixing device, which not only easily causes safety accidents, but also the quality and efficiency of spot welding are extremely low;

[0004] Regarding the above related technology, the inventor believes that the spot welding device for lithium battery assembly and processing has the defect that it is difficult to stably fix different numbers of lithium batteries, resulting in low spot welding efficiency and quality;

[0005] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Utility Model Content

[0006] In order to solve the problem that the spot welding device for lithium battery assembly and processing is difficult to stably fix different numbers of lithium batteries, resulting in low spot welding efficiency and quality, the present application provides a spot welding device for lithium battery assembly and processing.

[0007] The spot welding device for lithium battery assembly and processing provided by the present application adopts the following technical solutions:

[0008] A spot welding device for lithium battery assembly and processing includes a support table. Two first moving plates are slidably connected to the upper surface of the support table. Two second moving plates are slidably connected to the upper surface of the support table. Limiting grooves are respectively formed through the side surfaces of the two first moving plates. The two second moving plates are relatively slidable with respect to the inner walls of the limiting grooves. A nickel strip pressing plate is slidably connected to the side surface of the first moving plate. A first gantry is fixedly connected to the upper surface of the support table. A second gantry is slidably connected to the inner top surface of the first gantry. A slider is slidably connected to the inner top surface of the second gantry. Two hydraulic rods are fixedly connected to the lower surface of the slider. The slider is slidably connected to a welding box through the two hydraulic rods. Two spot welding heads are fixedly connected to the lower surface of the welding box.

[0009] Preferably, two first support plates and two second support plates are fixedly connected to the upper surface of the support platform. A first double-headed lead screw is rotatably connected to the side surfaces of the two first support plates, and the outer surface of the first double-headed lead screw is in relative screw engagement with both of the two first moving plates. First limit columns are fixedly connected to the side surfaces of the two second support plates, and the outer surfaces of the first limit columns are in relative sliding connection with both of the two first moving plates.

[0010] Preferably, a first sliding groove and a second sliding groove are formed in the upper surface of the support platform. A second limit column is fixedly connected to the inner side wall of the first sliding groove, and the outer surface of the second limit column is in relative sliding connection with both of the two second moving plates. A second double-headed lead screw is rotatably connected to the inner side wall of the first sliding groove, and the outer surface of the second double-headed lead screw is in relative screw engagement with both of the two second moving plates.

[0011] Preferably, a third sliding groove is formed through the side surface of the first moving plate. A first ball screw is rotatably connected to the inner wall of the third sliding groove, and the outer surface of the first ball screw is in relative screw engagement with the nickel strip pressing plate.

[0012] Preferably, a second ball screw is rotatably connected to the inner side wall of the first gantry, and the outer surface of the second ball screw is in relative screw engagement with the second gantry. A third ball screw is rotatably connected to the inner side wall of the second gantry, and the outer surface of the third ball screw is in relative screw engagement with the slider.

[0013] In summary, the present application includes the following beneficial technical effects:

[0014] By making the two first moving plates slide relative to each other and making the two second moving plates slide relative to each other, the two first moving plates and the two second moving plates are made to closely adjoin the four sides of the lithium battery pack and stably fix it together, so that it can be suitable for stably fixing and limiting the four sides of lithium battery packs with different quantities, in order to ensure the stable progress of subsequent spot welding, thereby improving the spot welding efficiency and quality; compared with the prior art, it has the effect of being convenient to stably fix lithium batteries with different quantities, thereby improving the spot welding efficiency and quality. Description of the Drawings

[0015] Figure 1 is the overall schematic diagram of the application embodiment;

[0016] Figure 2 is the connection structure diagram of the lithium battery fixing mechanism;

[0017] Figure 3 is the sectional view of the connection structure of the nickel strip pressing plate.

[0018] Description of the reference numerals: 1. Support platform; 2. First moving plate; 3. Second moving plate; 4. Limiting groove; 5. Nickel strip pressing plate; 6. First portal frame; 7. Second portal frame; 8. Slide block; 9. Hydraulic rod; 10. Welding box; 11. Spot welding head; 12. First support plate; 13. First double-headed lead screw; 14. Second support plate; 15. First limiting post; 16. First sliding groove; 17. Second limiting post; 18. Second sliding groove; 19. Second double-headed lead screw; 20. Third sliding groove; 21. First ball screw; 22. Second ball screw; 23. Third ball screw. Detailed implementation mode

[0019] The following will further describe the present application in detail with reference to the attached Figures 1-3 drawings.

[0020] An embodiment of the present application discloses a spot welding device for lithium battery assembly and processing. Referring to Figure 1 、 Figure 2 , it includes a table-shaped support platform 1 to stably support the entire device through the support platform 1, and two plate-shaped first moving plates 2 are slidably connected to the upper surface of the support platform 1. Two plate-shaped second moving plates 3 are slidably connected to the upper surface of the support platform 1. Square groove-shaped limiting grooves 4 are penetrated and opened on the side surfaces of the two first moving plates 2, and the two second moving plates 3 are relatively slidable with the inner walls of the limiting grooves 4, so that by making the two first moving plates 2 slide relatively and making the two second moving plates 3 slide relatively, it is possible to stably fix and limit the four sides of different numbers of lithium battery packs, so as to ensure the stable progress of subsequent spot welding. Secondly, a plate-shaped nickel strip pressing plate 5 is slidably connected to the side surface of the first moving plate 2, so that after the lithium battery pack is fixed, the nickel strip required for spot welding is placed on the lithium battery pack, and then by sliding the two nickel strip pressing plates 5 downward, the two sides of several nickel strips are pressed and fixed on the lithium battery, thereby ensuring the stability of subsequent spot welding, improving the spot welding efficiency and the spot welding quality;

[0021] Secondly, a first portal frame 6 is fixedly connected to the upper surface of the support platform 1. A second portal frame 7 is slidably connected to the inner top surface of the first portal frame 6. A cuboid-shaped slide block 8 is slidably connected to the inner top surface of the second portal frame 7. Two hydraulic rods 9 are fixedly connected to the lower surface of the slide block 8, and the slide block 8 is slidably connected to a welding box 10 through the two hydraulic rods 9. Two spot welding heads 11 are fixedly connected to the lower surface of the welding box 10, so that during the spot welding process, by moving the second portal frame 7 and moving the slide block 8, the welding box 10 and the two spot welding heads 11 are driven to move horizontally and vertically, so as to facilitate the stable spot welding of the nickel strip on each lithium battery, thereby completing the assembly of the lithium battery pack. The setting of the two spot welding heads 11 can improve the spot welding efficiency and greatly improve the assembly efficiency of the lithium battery pack.

[0022] Refer to Figure 1 , on the inner side wall of the first portal frame 6, a second ball screw 22 is rotatably connected. The outer surface of the second ball screw 22 is in relative screw engagement with the second portal frame 7. One end of the second ball screw 22 penetrates through the first portal frame 6 to its side surface and is fixedly connected to the output end of the motor. Secondly, on the inner side wall of the second portal frame 7, a third ball screw 23 is rotatably connected. One end of the third ball screw 23 penetrates through the second portal frame 7 to its side surface and is fixedly connected to the output end of the motor. The outer surface of the third ball screw 23 is in relative screw engagement with the slider 8. So as to drive the second ball screw 22 to rotate through the motor, thereby driving the second portal frame 7 to move longitudinally on the lower surface of the first portal frame 6. At the same time, drive the third ball screw 23 to rotate through the motor, thereby driving the slider 8 to move horizontally on the lower surface of the second portal frame 7, so as to drive the two hydraulic rods 9, the welding box 10, and the two spot welding heads 11 to move horizontally and longitudinally, so as to spot weld different batteries in the lithium battery pack.

[0023] Refer to Figure 2 , on the upper surface of the support table 1, two plate-shaped first support plates 12 and two plate-shaped second support plates 14 are fixedly connected. On the side surfaces of the two first support plates 12, a first double-headed screw 13 is rotatably connected. The outer surface of the first double-headed screw 13 is in relative screw engagement with both of the two first moving plates 2. And on the side surfaces of the two second support plates 14, a columnar first limiting column 15 is fixedly connected. The outer surface of the first limiting column 15 is in relative sliding with both of the two first moving plates 2. Secondly, on the upper surface of the support table 1, a groove-shaped first sliding groove 16 and a groove-shaped second sliding groove 18 are opened. On the inner side wall of the first sliding groove 16, a columnar second limiting column 17 is fixedly connected. The outer surface of the second limiting column 17 is in relative sliding with both of the two second moving plates 3. And on the inner side wall of the first sliding groove 16, a second double-headed screw 19 is rotatably connected. The outer surface of the second double-headed screw 19 is in relative screw engagement with both of the two second moving plates 3. So as to drive the two first moving plates 2 to slide relatively or away from each other by the operator rotating the first double-headed screw 13 under the limiting action of the first limiting column 15. Then, under the limiting action of the second limiting column 17 on the second moving plates 3, drive the two second moving plates 3 to slide relatively or away from each other by the operator rotating the second double-headed screw 19, so as to complete the adjustment of the distance between the two first moving plates 2 and the distance between the two second moving plates 3, so as to be applicable to stably limit and fix lithium battery packs with different numbers of batteries, so as to perform high-efficiency spot welding on them subsequently, improving the practicability and versatility of the present device.

[0024] Refer to Figure 3, a groove-shaped third sliding groove 20 is formed through the side surface of the first moving plate 2, and a first ball screw 21 is rotatably connected to the inner wall of the third sliding groove 20. The outer surface of the first ball screw 21 is screwed with the nickel strip pressing plate 5 relatively, so that by rotating the first ball screw 21 by a worker, the nickel strip pressing plate 5 can be driven to slide downward along the inner wall of the third sliding groove 20, so that the two ends of the nickel strip placed on the upper end of the lithium battery pack can be pressed and fixed by the nickel strip pressing plate 5.

[0025] The implementation principle of a spot welding device for lithium battery assembly and processing in an embodiment of the present application is as follows: Place the lithium battery pack to be spot welded between two first moving plates 2 and two second moving plates 3 on the support table 1. Then, under the limiting action of the first limiting column 15, by rotating the first double-headed screw 13 by a worker, the two first moving plates 2 can be driven to slide relatively. Then, under the limiting action of the second limiting column 17 on the second moving plate 3, by rotating the second double-headed screw 19 by a worker, the two second moving plates 3 can be driven to slide relatively, so as to complete the adjustment of the distance between the two first moving plates 2 and the distance between the two second moving plates 3, so that the two first moving plates 2 and the two second moving plates 3 are close to the four sides of the lithium battery pack, so that it can be suitable for stably limiting and fixing lithium battery packs with different numbers of batteries, improving the spot welding efficiency and spot welding quality. Then, place the nickel strip required for spot welding on the lithium battery pack, and then by rotating the first ball screw 21 by a worker, the nickel strip pressing plate 5 can be driven to slide downward along the inner wall of the third sliding groove 20, so that the two ends of the nickel strip placed on the upper end of the lithium battery pack can be pressed and fixed by the nickel strip pressing plate 5, so as to ensure the stability of subsequent spot welding. Then, the second ball screw 22 is driven to rotate by a motor, so that the second gantry 7 moves longitudinally on the lower surface of the first gantry 6. At the same time, the third ball screw 23 is driven to rotate by a motor, so that the slider 8 moves horizontally on the lower surface of the second gantry 7, so as to drive the two hydraulic rods 9, the welding box 10, and the two spot welding heads 11 to move horizontally and longitudinally, so as to spot weld different batteries in the lithium battery pack, so as to facilitate the stable spot welding of the nickel strip to each battery. Then, the welding box 10 and the two spot welding heads 11 are driven to slide downward by the hydraulic rod 9, so that two batteries can be spot welded at the same time, improving the spot welding efficiency, and thus greatly improving the assembly efficiency of the lithium battery pack.

[0026] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, and can also be the communication inside two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change;

[0027] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

[0029] The above are all the preferred embodiments of this application and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A spot welding device for lithium battery assembly and processing, comprising a support table (1), characterized in that: Two first moving plates (2) are slidably connected to the upper surface of the support table (1). Two second moving plates (3) are slidably connected to the upper surface of the support table (1). Limiting grooves (4) are respectively formed through the side surfaces of the two first moving plates (2). The two second moving plates (3) slide relative to the inner walls of the limiting grooves (4). A nickel strip pressing plate (5) is slidably connected to the side surface of the first moving plate (2). A first portal frame (6) is fixedly connected to the upper surface of the support table (1). A second portal frame (7) is slidably connected to the inner top surface of the first portal frame (6). A slider (8) is slidably connected to the inner top surface of the second portal frame (7). Two hydraulic rods (9) are fixedly connected to the lower surface of the slider (8). The slider (8) is slidably connected to a welding box (10) through the two hydraulic rods (9). Two spot welding heads (11) are fixedly connected to the lower surface of the welding box (10).

2. The spot welding device for lithium battery assembly and processing according to claim 1, wherein: Two first support plates (12) and two second support plates (14) are fixedly connected to the upper surface of the support table (1). A first double-headed lead screw (13) is rotatably connected to the side surfaces of the two first support plates (12). The outer surface of the first double-headed lead screw (13) is in relative screw engagement with the two first moving plates (2). A first limiting column (15) is fixedly connected to the side surfaces of the two second support plates (14). The outer surface of the first limiting column (15) is in relative sliding with the two first moving plates (2).

3. The spot welding device for lithium battery assembly and processing according to claim 1, wherein: A first sliding groove (16) and a second sliding groove (18) are formed in the upper surface of the support table (1). A second limiting column (17) is fixedly connected to the inner side wall of the first sliding groove (16). The outer surface of the second limiting column (17) is in relative sliding with the two second moving plates (3). A second double-headed lead screw (19) is rotatably connected to the inner side wall of the first sliding groove (16). The outer surface of the second double-headed lead screw (19) is in relative screw engagement with the two second moving plates (3).

4. A spot welding device for lithium battery assembly and processing according to claim 1, characterized in that: A third sliding groove (20) is formed through the side surface of the first moving plate (2). A first ball screw (21) is rotatably connected to the inner wall of the third sliding groove (20). The outer surface of the first ball screw (21) is in relative screw engagement with the nickel strip pressing plate (5).

5. The spot welding device for lithium battery assembly and processing according to claim 1, wherein: A second ball screw (22) is rotatably connected to the inner side wall of the first portal frame (6). The outer surface of the second ball screw (22) is in relative screw engagement with the second portal frame (7). A third ball screw (23) is rotatably connected to the inner side wall of the second portal frame (7). The outer surface of the third ball screw (23) is in relative screw engagement with the slider (8).

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