Welding pressure head

Abstract

The utility model discloses a welding pressure head which comprises a first welding pressure head part and a second welding pressure head part, the second welding pressure head part and the first welding pressure head part have the same structure and are arranged in parallel, and the first welding pressure head part and the second welding pressure head part are movably connected through a third movable guide part; a plurality of welding copper nozzles are arranged in the first welding pressure head part, and the distance between every two adjacent welding copper nozzles is adjustably arranged. The welding pressure head device is provided with the adjustable welding pressure heads, so that the welding pressure head device does not change types when products are replaced, and the distance between the welding pressure heads is automatically or manually adjusted when the production line products are changed types, so that the production efficiency is improved, and the production cost is reduced. And the automation and flexibility of the welding station and even the whole module pack production line are improved.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery module manufacturing, in particular to a welding pressure head. Background Art

[0002] The welding station is a crucial workstation in the lithium-ion battery pack manufacturing process, present on nearly every module pack assembly line. During module welding, a welding pressure head mechanism is required to apply a certain amount of pressure to the cell terminals to ensure weld stability. However, since conventional pressure heads are fixed, they must be replaced with new ones every time a product is changed, which is very labor-intensive and has a significant impact on production.

[0003] In the current market, with increasing customer demand and more and more products, how to improve production line flexibility and reduce labor input has become a major challenge for existing module pack production lines. As an important welding work station, the automatic adjustment of the spacing of the welding pressure head to adapt to different products is a problem that needs to be solved and has become an important part of the entire module pack production line. Utility Model Content

[0004] The purpose of this utility model is to provide a welding pressure head, so that when changing products, the welding pressure head device no longer needs to be changed. When the product on the production line is changed, the welding station only needs to automatically adjust the distance between each welding pressure head according to the program, thereby improving the automation and flexibility of the welding station and even the entire module pack production line.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A welding pressure head, comprising a first welding pressure head portion and a second welding pressure head portion, wherein the second welding pressure head portion has the same structure as the first welding pressure head portion and is arranged in parallel, and the first welding pressure head portion and the second welding pressure head portion are movably connected via a third movable guide portion;

[0007] A plurality of welding copper nozzles are arranged in the first welding pressure head portion, and the spacing between adjacent welding copper nozzles can be adjusted.

[0008] By adjusting the distance between the first welding pressure head and the second welding pressure head, as well as the spacing between the welding copper nozzles in the pressure head, the welding requirements of batteries of different models and sizes can be adapted.

[0009] As a further solution of the present invention: three welding copper nozzles are provided in the first welding pressure head portion, and the three welding copper nozzles are movably connected through a first movable guide portion.

[0010] By setting up three welding copper nozzles, three batteries can be welded at the same time, and the spacing between the three welding copper nozzles can also be adjusted to adapt to batteries of different sizes.

[0011] As a further solution of the present invention: the first movable guide portion includes at least one first slide rail, a plurality of first sliders are slidably connected to the first slide rail, and the welding copper nozzle is slidably connected to the first slide rail through the first slider.

[0012] The distance between the welding copper nozzles is adjusted by the first slider and the first slide rail.

[0013] As a further solution of the present invention: a mounting plate is fixedly connected to the first sliding block, and the welding copper nozzle is slidably connected to the mounting plate through a guide rod and a compression spring.

[0014] By arranging the guide rod and the compression spring, the welding copper nozzle can be pressed onto the battery under the action of the spring pre-tightening force, thereby improving the welding quality.

[0015] As a further solution of the present invention: a driving motor is provided on the first sliding block for driving the first sliding block to slide on the first sliding rail.

[0016] The distance between the sliders is adjusted by driving the motor, thereby adjusting the position of the welding copper nozzle.

[0017] As a further solution of the present invention: three welding copper nozzles are provided in the second welding pressure head portion, and the three welding copper nozzles are movably connected through a second movable guide portion, and the second movable guide portion has the same structure as the first movable guide portion.

[0018] By arranging three welding copper nozzles in the second welding pressure head portion, six batteries can be welded simultaneously in combination with the first welding pressure head portion.

[0019] As a further solution of the present invention: the third movable guide portion includes two second slide rails arranged in parallel, the first welding pressure head portion is slidably connected to the second slide rails, and the second welding pressure head portion is fixedly connected to the second slide rails.

[0020] The second slide rail provides the first welding pressure head with the ability to move horizontally.

[0021] As a further solution of the present invention: a second slider is slidably connected to the second slide rail, a support plate is fixedly connected to the second slider, the end of the first slide rail is fixedly connected to the second slider through the support plate, and the second slider is provided with a drive motor for driving the second slider to slide on the second slide rail.

[0022] By setting a second slide rail and a second slider, the second slider slides on the second slide rail, and then the second slider can be appropriately moved horizontally. Both ends of the first slide rail are arranged on the second slider, so that the first slide rail can slide horizontally with the second slide rail.

[0023] As a further solution of the present invention: the driving motor adopts an ultra-thin motor.

[0024] Using ultra-thin motors, the minimum distance can reach 20mm, which can cover most of the distance between battery cells, thereby improving the flexibility of the device.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention is provided with an adjustable welding pressure head, so that when the product is replaced, the welding pressure head device no longer needs to be changed. When the production line product is changed, the distance between each welding pressure head is automatically or manually adjusted, thereby improving the automation and flexibility of the welding station and even the entire module pack production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0027] Figure 2 This is a schematic structural diagram of the first welding pressure head of this embodiment;

[0028] Figure 3 This is a schematic diagram of the second welding pressure head of this embodiment;

[0029] Figure 4 This is a schematic diagram of the drive motor structure of this embodiment;

[0030] Figure 5 This is a schematic diagram of the distribution and movement of the drive motors in this embodiment.

[0031] In the figure: 1-first welding pressure head, 2-second welding pressure head, 3-first moving guide part, 4-second moving guide part, 5-third moving guide part, 6-driving motor, 7-welding copper nozzle, 8-compression spring, 9-mounting plate, 10-first slider, 11-first slide rail, 12-second slide rail, 13-support plate, 14-second slider. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1 In an embodiment of the present invention, a welding pressure head includes a first welding pressure head portion 1 and a second welding pressure head portion 2. The second welding pressure head portion 2 has the same structure as the first welding pressure head portion 1 and is arranged in parallel. The first welding pressure head portion 1 and the second welding pressure head portion 2 are movably connected through a third movable guide portion 5. By adjusting the distance between the first welding pressure head portion 1 and the second welding pressure head portion 2, the welding requirements of batteries of different models and sizes can be adapted.

[0034] See also Figure 2 , a plurality of welding copper nozzles 7 are provided in the first welding pressure head 1, and the spacing between adjacent welding copper nozzles 7 is adjustable. In this embodiment, three welding copper nozzles 7 are provided in the first welding pressure head 1. By providing three welding copper nozzles 7, three batteries can be welded at the same time. The spacing between the three welding copper nozzles 7 can also be adjusted to adapt to batteries of different sizes. The three welding copper nozzles 7 are movably connected by a first movable guide part 3. The first movable guide part 3 includes at least one first slide rail 11. A plurality of first sliders 10 are slidably connected to the first slide rail 11. The welding copper nozzle 7 is slidably connected to the first slide rail 11 through the first slider 10. A mounting plate 9 is fixedly connected to the first slider 10. The welding copper nozzle 7 is slidably connected to the mounting plate 9 through a guide rod and a compression spring 8. By providing a guide rod and a compression spring 8, the welding copper nozzle can be pressed against the battery under the action of the spring preload force to improve the welding quality. A driving motor 6 for driving the first slider 10 to slide on the first slide rail 11 is provided on the first slider 10. The distance between the sliders is adjusted by the driving motor 6, thereby realizing the adjustment of the position of the welding copper nozzle 7.

[0035] See also Figure 1 Three welding copper nozzles 7 are provided in the second welding pressure head 2, and the three welding copper nozzles 7 are movably connected through the second movable guide part 4. The second movable guide part 4 has the same structure as the first movable guide part 3. By arranging three welding copper nozzles 7 in the second welding pressure head 2, combined with the first welding pressure head 1, six batteries can be welded at the same time.

[0036] See also Figure 1 、 Figure 3The third movable guide part 5 includes two second slide rails 12 arranged in parallel, the first welding pressure head 1 is slidably connected to the second slide rail 12, and the second welding pressure head 2 is fixedly connected to the second slide rail 12. The second slide rail 12 is slidably connected with a second slider 14, and the second slider 14 is fixedly connected with a support plate. The end of the first slide rail 11 is fixedly connected to the second slider 14 through the support plate 13, and the second slider 14 is provided with a driving motor 6 for driving the second slider 14 to slide on the second slide rail 12. The second slide rail 12 is used to provide the first welding pressure head 1 with the ability to move horizontally. By setting the second slide rail 12 and the second slider 14, the second slider 14 slides on the second slide rail 12, and then the second slider 14 can be appropriately moved horizontally. Both ends of the first slide rail 11 are arranged on the second slider 14, so that the first slide rail 11 can slide horizontally with the second slide rail 12.

[0037] See also Figure 4 In this embodiment, the driving motor 6 adopts an ultra-thin motor. By using the ultra-thin motor, the minimum distance can reach 20 mm, which can cover the distance between most battery cells, thereby improving the flexibility of the device.

[0038] When the utility model is used, Figure 5 As shown, it includes a first welding pressure head 1 and a second welding pressure head 2. Three welding copper nozzles 7 are provided in the first welding pressure head 1 and the second welding pressure head 2. Each welding copper nozzle 7 has an ultra-thin motor drive in the Y direction, which can automatically adjust the spacing along the Y direction. When producing the same battery cell products or different battery cells with the same spacing between the batteries in the Y-axis direction, the welding copper nozzle 7 can be driven by the motor to move and adapt to different battery cell sizes; when switching different battery cell products and the distance between the batteries in the Y-axis direction is different, the welding pressure head device is driven by the ultra-thin motor according to the originally set program to move each pressure head a certain distance according to the battery cell spacing, thereby meeting the distance between each battery cell in the Y-axis direction, ensuring the pole position during laser welding, and thus completing the accuracy of the pole Y-axis.

[0039] At the same time, in the X-axis direction, the first welding pressure head 1 is driven by a motor to move in the X-direction, so that the distance between the two welding pressure heads can be adjusted. When switching between battery cells of different products, the distance between the positive and negative poles of a single battery cell is adjusted along the X-axis direction to meet the distance between the two poles of each battery cell in the X-axis direction.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A welding pressure head, characterized in that: The invention comprises a first welding pressure head portion (1) and a second welding pressure head portion (2), wherein the second welding pressure head portion (2) has the same structure as the first welding pressure head portion (1) and is arranged in parallel, and the first welding pressure head portion (1) and the second welding pressure head portion (2) are movably connected via a third movable guide portion (5); A plurality of welding copper nozzles (7) are provided in the first welding pressure head portion (1), and the spacing between adjacent welding copper nozzles (7) can be adjusted.

2. A welding pressure head according to claim 1, characterized in that: Three welding copper nozzles (7) are provided in the first welding pressure head portion (1), and the three welding copper nozzles (7) are movably connected via a first movable guide portion (3).

3. A welding pressure head according to claim 2, characterized in that: The first movable guide portion (3) comprises at least one first slide rail (11), a plurality of first sliders (10) are slidably connected to the first slide rail (11), and the welding copper nozzle (7) is slidably connected to the first slide rail (11) via the first sliders (10).

4. A welding pressure head according to claim 3, characterized in that: A mounting plate (9) is fixedly connected to the first sliding block (10), and the welding copper nozzle (7) is slidably connected to the mounting plate (9) via a guide rod and a compression spring (8).

5. A welding pressure head according to claim 3, characterized in that: The first sliding block (10) is provided with a driving motor (6) for driving the first sliding block (10) to slide on the first sliding rail (11).

6. A welding pressure head according to claim 2, characterized in that: Three welding copper nozzles (7) are provided in the second welding pressure head portion (2), and the three welding copper nozzles (7) are movably connected via a second movable guide portion (4), and the second movable guide portion (4) has the same structure as the first movable guide portion (3).

7. A welding pressure head according to claim 3, characterized in that: The third movable guide portion (5) comprises two second slide rails (12) arranged in parallel, the first welding pressure head portion (1) is slidably connected to the second slide rails (12), and the second welding pressure head portion (2) is fixedly connected to the second slide rails (12).

8. A welding pressure head according to claim 7, characterized in that: A second slider (14) is slidably connected to the second slide rail (12), a support plate is fixedly connected to the second slider (14), an end of the first slide rail (11) is fixedly connected to the second slider (14) via a support plate (13), and a driving motor (6) is provided on the second slider (14) for driving the second slider (14) to slide on the second slide rail (12).

9. A welding pressure head according to claim 5 or 8, characterized in that: The driving motor (6) is an ultra-thin motor.

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