Battery cell welding tool

Abstract

The utility model relates to the technical field of battery cell processing, and discloses a battery cell welding tool which comprises a working table, a first threaded rod and a second threaded rod are fixedly connected to the two sides of the working table, a lower pressing plate is slidably connected to the top ends of the first threaded rod and the second threaded rod, a plurality of movable plates are slidably connected to the middle of the lower pressing plate, and a groove is formed in the middle of the lower pressing plate. The lower pressing plate is connected with the movable plates through bolt structures, a groove is formed in the middle of each movable plate, two L-shaped supports are connected to the two ends of each movable plate in a sliding mode, and a welding pressing head is fixedly connected to the lower end of each L-shaped support. According to the utility model, the battery cell main body is fixed through the extrusion of the telescopic baffle and the movable baffle, the welding accuracy is ensured, the yield is improved, and the battery cell welding device can be suitable for welding battery cells with different specifications through the combination of the partition plates and the baffles around the battery cells.

Description

Technical Field

[0001] The utility model relates to the field of battery core welding tooling, in particular to a battery core welding tooling. Background Art

[0002] Due to the presence of cylindrical pole ears in the battery cells, nickel sheet welding is used for welding, so the welding efficiency and welding area cannot be guaranteed. When processing the battery cells, the electrode sheets are usually welded to multiple battery cells so that the multiple battery cells are connected in series and parallel to form a battery module for use.

[0003] After searching, it was found that a battery cell welding tool was disclosed in the announcement number: CN218874242U, which includes a base and a protective box. Screws are provided on the top of the base and near the left and right edges. A number of evenly distributed battery cell bodies are provided inside the protective box. A fixing mechanism is provided on the inner side of the protective box and near the front edge. A positioning mechanism is provided above the protective box, and a limiting mechanism is provided above the positioning mechanism.

[0004] The above application cannot be applied to welding of cells of different specifications, and is inefficient and time-consuming. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a battery core welding tool, which aims to improve the problem that it cannot be used for welding battery cores of different specifications.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery core welding tool, including a workbench, a first threaded rod and a second threaded rod are fixedly connected on both sides of the workbench, a lower pressure plate is slidably connected to the top of the first threaded rod and the second threaded rod, a plurality of movable plates are slidably connected to the middle of the lower pressure plate, a groove is provided in the middle of the lower pressure plate, the lower pressure plate and the movable plate are connected by a bolt structure, a groove is provided in the middle of each of the movable plates, two L-shaped brackets are slidably connected at both ends of the movable plate, and a welding pressure head is fixedly connected to the lower end of each of the L-shaped brackets.

[0007] Preferably, a first fixed baffle is fixedly connected to the upper surface of the workbench, a groove is provided in the middle of the first fixed baffle, and a plurality of movable partitions are slidably connected to the inner wall of the first fixed baffle.

[0008] Preferably, a second fixed plate is fixedly connected to the upper surface of the workbench, a groove is provided in the middle of the second fixed baffle plate, and a movable baffle plate is slidably connected to the inner wall of the second fixed baffle plate.

[0009] Preferably, a groove is provided in the middle of the movable baffle, and a plurality of movable partitions are slidably connected to the inner wall of the movable baffle.

[0010] Preferably, an electric telescopic rod is fixedly connected to the upper surface of the workbench, and a transmission end of the electric telescopic rod is fixedly connected to the middle part of the movable baffle.

[0011] Preferably, an electric push rod is fixedly connected to the upper surface of the workbench, a push plate is fixedly connected to the transmission end of the electric push rod, and a telescopic baffle is slidably connected to the outside of the push plate.

[0012] Preferably, a sleeve is connected to the middle of the telescopic baffle, a spring is installed on the inner wall of the sleeve, the other end of the sleeve is slidably connected to the inside of the baffle, the sleeve is squeezed to drive the telescopic baffle to move back and forth, and the baffle is fixedly connected to the outer wall of the push plate.

[0013] Preferably, a battery cell body is placed between the plurality of movable partitions, and the battery cell body is provided with symmetrical cylindrical pole ears on the left and right sides.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the battery core body is fixed by squeezing the telescopic baffle and the movable baffle, thereby ensuring the accuracy of welding and improving the yield rate.

[0016] 2. In the utility model, the partition plate and the baffle plates around the battery cell are combined to be applicable to welding of battery cells of different specifications, thereby improving efficiency and meeting different needs.

[0017] 3. In the utility model, the nickel sheet is fully contacted with the cylindrical ear of the battery cell by the welding pressure head. During welding, the lower pressure plate squeezes the electrode sheet to make the electrode sheet fit tightly with the top of the battery cell body, which can avoid welding leakage or empty welding during welding. At the same time, the welding position can be positioned through the welding hole to ensure the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a battery core welding tool proposed by the utility model;

[0019] Figure 2 A three-dimensional diagram of a battery core welding tool proposed by the utility model;

[0020] Figure 3 This is a structural diagram of a movable baffle of a battery core welding tooling proposed by the utility model;

[0021] Figure 4 This is a structural diagram of a lower pressure plate of a battery core welding tooling proposed by the utility model;

[0022] Figure 5 This is a structural diagram of a telescopic baffle of a battery core welding tooling proposed by the utility model;

[0023] Legend:

[0024] 1. Workbench; 2. Movable partition; 3. Movable baffle; 4. Electric telescopic rod; 5. Electric push rod; 6. Telescopic baffle; 61. Baffle; 62. Spring; 63. Sleeve; 64. Push plate; 7. First threaded rod; 8. Welding pressure head; 9. Movable plate; 10. Second threaded rod; 11. Lower pressure plate; 12. First fixed baffle; 13. Second fixed baffle; 14. Battery body; 15. L-shaped bracket. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figure 1-Figure 3 An embodiment of the utility model is provided: a battery core welding tool, including a workbench 1, a first threaded rod 7 and a second threaded rod 10 are fixedly connected on both sides of the workbench 1, a lower pressure plate 11 is slidably connected to the top of the first threaded rod 7 and the second threaded rod 10, a plurality of movable plates 9 are slidably connected to the middle of the lower pressure plate 11, a groove is provided in the middle of the lower pressure plate 11, the lower pressure plate 11 and the movable plate 9 are connected by a bolt structure, a groove is provided in the middle of each movable plate 9, two L-shaped brackets 15 are slidably connected at both ends of the movable plate 9, and a welding pressure head 8 is fixedly connected to the lower end of each L-shaped bracket 15.

[0027] Both L-shaped brackets can slide and change their positions by means of the grooves thereon, and the movable plate 9 can slide and change its position by means of the grooves. The welding pressure head 8 is hollow in the middle and compacted all around. At the same time, the hollow part in the middle ensures heat dissipation during welding, thus ensuring the welding quality.

[0028] A first fixed baffle 12 is fixedly connected to the upper surface of the workbench 1 , a groove is provided in the middle of the first fixed baffle 12 , and a plurality of movable partitions 2 are slidably connected to the inner wall of the first fixed baffle 12 .

[0029] The movable partition 2 can be guided by the groove to move and separate the battery body 14 at the same time.

[0030] A second fixed plate 13 is fixedly connected to the upper surface of the workbench 1. A groove is provided in the middle of the second fixed baffle 13. A movable baffle 3 is slidably connected to the inner wall of the second fixed baffle 13. The fixed baffle 13 slides guided by the groove.

[0031] A groove is provided in the middle of the movable baffle 3, and a plurality of movable partitions 2 are slidably connected to the inner wall of the movable baffle 3. The movable partitions 2 can move guided by the groove and separate the battery body 14 at the same time.

[0032] An electric telescopic rod 4 is fixedly connected to the upper surface of the workbench 1 , and a transmission end of the electric telescopic rod 4 is fixedly connected to the middle of the movable baffle 4 . The movable baffle 4 moves to squeeze and fix the battery body 14 through the extension and retraction of the electric telescopic rod.

[0033] An electric push rod 5 is fixedly connected to the upper surface of the workbench 1, a push plate 64 is fixedly connected to the transmission end of the electric push rod 5, a telescopic baffle 6 is slidably connected to the outer wall of the push plate 64, a special-shaped groove is opened in the middle of the push plate, and a guide rail matching the special-shaped groove is opened on the outer wall of the telescopic baffle 6. In the case of extrusion, the telescopic baffle 6 slides guided by the special-shaped groove.

[0034] Reference Figure 5 A sleeve 63 is connected to the middle of the telescopic baffle 6, and a spring 62 is installed on the inner wall of the sleeve 63. When the sleeve 63 is squeezed, it can drive the telescopic baffle 6 to move back and forth. The other end of the sleeve 63 is slidably connected to the inside of the baffle 61, and the baffle 61 is fixedly connected to the outer wall of the push plate 64. The spring 62 can make the telescopic baffle automatically rebound when it is not squeezed. When the sleeve is squeezed, one end will retract into the inside of the baffle 61.

[0035] Reference Figure 4 A battery cell body 14 is placed between the multiple movable partitions 2, and the battery cell body 14 is provided with symmetrical cylindrical pole ears on the left and right sides.

[0036] The battery cell tabs are cylindrical, the nickel sheet welding cannot be positioned and the contact surface is limited. If the nickel sheet and the tabs are not fully crimped, the overcurrent cannot be guaranteed.

[0037] Working principle: first, put the battery body 14 into the position between the movable partitions 2, and the electric push rod 5 pushes the telescopic baffle 6 inward to squeeze, and then the electric telescopic rod 4 contracts inward to squeeze the telescopic baffle to fix the battery body 14, and at the same time adjust the movable plate 9 on the lower pressure plate 11 and the L-shaped bracket 15 thereon to a suitable position, and use the welding pressure head 8 under the L-shaped bracket 15 to fully contact the nickel sheet with the cylindrical pole ear of the battery cell. When welding, the lower pressure plate 11 squeezes the electrode sheet so that the electrode sheet fits tightly with the top of the battery body 14, which can avoid leakage or empty welding during the welding process. The single welding pressure head 8 is hollow in the middle and compacted all around. At the same time, the hollow part in the middle ensures heat dissipation during welding.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery core welding tool, comprising a workbench (1), Features: The workbench (1) is fixedly connected with a first threaded rod (7) and a second threaded rod (10) on both sides; a lower pressure plate (11) is slidably connected to the top of the first threaded rod (7) and the second threaded rod (10); a plurality of movable plates (9) are slidably connected to the middle of the lower pressure plate (11); a groove is provided in the middle of the lower pressure plate (11); the lower pressure plate (11) and the movable plate (9) are connected by a bolt structure; a groove is provided in the middle of each movable plate (9); two L-shaped brackets (15) are slidably connected to both ends of the movable plate (9); and a welding pressure head (8) is fixedly connected to the lower end of each L-shaped bracket (15).

2. A battery core welding tool according to claim 1, Features: A first fixed baffle (12) is fixedly connected to the upper surface of the workbench (1), a groove is provided in the middle of the first fixed baffle (12), and a plurality of movable partitions (2) are slidably connected to the inner wall of the first fixed baffle (12).

3. The battery core welding tool according to claim 2, Features: A second fixed baffle (13) is fixedly connected to the upper surface of the workbench (1), a groove is provided in the middle of the second fixed baffle (13), and a movable baffle (3) is slidably connected to the inner wall of the second fixed baffle (13).

4. The battery core welding tool according to claim 3, Features: A groove is provided in the middle of the movable baffle (3), and a plurality of movable partitions (2) are slidably connected to the inner wall of the movable baffle (3).

5. The battery core welding tool according to claim 4, Features: An electric telescopic rod (4) is fixedly connected to the upper surface of the workbench (1), and a transmission end of the electric telescopic rod (4) is fixedly connected to the middle of the movable baffle (3).

6. The battery core welding tool according to claim 5, Features: The upper surface of the workbench (1) is fixedly connected to an electric push rod (5), the transmission end of the electric push rod (5) is fixedly connected to a push plate (64), a special-shaped groove is provided in the middle of the push plate (64), and a telescopic baffle (6) is slidably connected to the outer wall of the push plate (64).

7. The battery core welding tool according to claim 6, Features: A sleeve (63) is connected to the middle of the telescopic baffle (6), a spring (62) is installed on the inner wall of the sleeve (63), the other end of the sleeve (63) is slidably connected to the inside of the baffle (61), the sleeve (63) is squeezed to drive the telescopic baffle (6) to move back and forth, and the baffle (61) is fixedly connected to the outer wall of the push plate (64) at the transmission end of the electric push rod (5).

8. The battery core welding tool according to claim 7, Features: A battery cell body (14) is placed between the plurality of movable partitions (2), and the battery cell body (14) is provided with symmetrical cylindrical pole ears on the left and right.

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