A quick replacement mechanism for laser welding pressure head suitable for different soft package batteries

Abstract

This invention provides a quick-change mechanism for laser welding pressure heads suitable for different soft-pack batteries, including a welding pressure head base and a welding pressure head. A pressure head connecting part is installed at the front end of the welding pressure head base. The welding pressure head base is movably connected to the welding pressure head through the pressure head connecting part and a connecting mechanism. The connecting mechanism includes a pressure head stop block, two spring pillars, two springs, a pressure head stop fixing block, and two pressure head stop fixing screws. This invention allows welding of the tabs of different soft-pack batteries by changing different types of welding pressure heads; it can improve the utilization rate of welding equipment and reduce the investment cost of welding equipment; the welding pressure head does not require fasteners such as screws for fixation, improving the pressure head replacement efficiency; the welding pressure head can be quickly replaced and is easy to operate.

Description

Technical Field

[0001] This utility model belongs to the field of battery laser welding technology, and relates to a quick-change mechanism for laser welding pressure heads suitable for different soft-pack batteries. Background Technology

[0002] In the new energy vehicle industry, the three most prominent components are the motor, electronic control system, and battery. There are various battery connection methods, including ultrasonic welding, laser welding, and resistance welding, with laser welding being the most widely used in series-parallel battery connections. In typical production line designs, laser welding equipment can only weld one type of product at a time, unable to weld different products. Modifying laser welding equipment to provide greater flexibility could significantly reduce costs. During lithium battery welding, the biggest difference between products lies in the welding area of ​​the electrode tabs. Changing the welding head for different lithium battery products can greatly improve the utilization rate of the welding equipment, allowing different lithium battery products to be welded on the same production line, thus saving labor and production line costs.

[0003] Existing welding equipment can only be used for dedicated lines and cannot meet the welding requirements of different products. Summary of the Invention

[0004] The purpose of this invention is to provide a quick-change mechanism for laser welding pressure heads of different soft-pack batteries, so as to solve the problems mentioned in the background art.

[0005] The purpose of this utility model can be achieved through the following technical solution: a quick-change mechanism for laser welding pressure heads suitable for different soft-pack batteries, including a welding pressure head base and a welding pressure head, wherein a pressure head connecting part is installed at the front end of the welding pressure head base, and the welding pressure head base is movably connected to the welding pressure head through the pressure head connecting part and the connecting mechanism.

[0006] The connecting mechanism includes a pressure head stop block, two spring pillars, two springs, a pressure head stop fixing block, and two pressure head stop fixing screws; The top of the welding head is provided with two T-shaped limiting strips, and one end of each of the two T-shaped limiting strips is provided with a V-shaped limiting part. The bottom of the welding head base is provided with two T-shaped grooves corresponding to the T-shaped limiting strips, and the front end of the two T-shaped grooves is provided with a V-shaped part corresponding to the V-shaped limiting part.

[0007] In the above-mentioned quick-change mechanism for laser welding pressure heads applicable to different soft-pack batteries, the pressure head stop fixing block is installed on the pressure head connection part and is threadedly connected to the welding pressure head base by two pressure head stop fixing screws.

[0008] In the above-mentioned quick-change mechanism for laser welding pressure heads applicable to different soft-pack batteries, two springs are sleeved on corresponding spring posts, and both spring posts are connected to the pressure head stop fixing block so that the pressure head stop block is installed with the pressure head connection part.

[0009] In the above-mentioned quick-change mechanism for laser welding pressure heads applicable to different soft-pack batteries, the pressure head stop block includes a toggle rod, and the two ends of the toggle rod are provided with ear plate connecting parts, and the ends of the two ear plate connecting parts are provided with insertion parts.

[0010] In the above-mentioned quick-change mechanism for laser welding pressure heads applicable to different soft-pack batteries, the two ends of the pressure head connection are provided with insertion slots, and the two insertion slots correspond to two insertion parts.

[0011] In the above-mentioned quick-change mechanism for laser welding pressure heads applicable to different soft-pack batteries, the insertion part abuts against the end of the T-shaped limiting strip when connected to the insertion slot.

[0012] Compared with the prior art, the advantages of this utility model of a quick-change mechanism for laser welding heads suitable for different soft-pack batteries are as follows: welding of the tabs of different soft-pack batteries can be performed by changing different types of welding heads; the utilization rate of welding equipment can be improved and the investment cost of welding equipment can be reduced; the welding heads do not need to be fixed with screws or other fasteners, improving the efficiency of head replacement; the welding heads can be quickly replaced and are easy to operate. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a quick-change mechanism for laser welding pressure heads of different soft-pack batteries according to this utility model.

[0014] Figure 2 This utility model relates to a quick-change mechanism for laser welding pressure heads suitable for different soft-pack batteries. Figure 1 A schematic diagram of its decomposed structure.

[0015] Figure 3 This is a three-dimensional structural diagram of a pressure head stop block for a quick-change mechanism for laser welding pressure heads of different soft-pack batteries, according to this utility model.

[0016] Figure 4 This is a schematic diagram of the connection between the welding head base and the pressure head stop block in a quick-change mechanism for laser welding pressure heads applicable to different soft-pack batteries.

[0017] Figure 5 This is a three-dimensional structural diagram of a welding pressure head base for a quick-change mechanism for laser welding pressure heads of different soft-pack batteries, according to this utility model.

[0018] Figure 6This is a schematic diagram of a quick-change mechanism for laser welding pressure heads of different soft-pack batteries, where the welding pressure head base and the welding pressure head are separated.

[0019] In the figure, 1. Welding head base; 2. Welding head; 3. Head connecting part; 301. Insertion slot; 4. Head stop block; 401. Actuating rod; 402. Ear plate connecting part; 403. Insertion part; 5. Spring column; 6. Spring; 7. Head stop fixing block; 8. Head stop fixing screw; 9. T-shaped limit strip; 10. V-shaped limit part; 11. T-shaped slot. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this utility model provides a quick-change mechanism for laser welding pressure heads suitable for different soft-pack batteries; Example 1: The quick-change mechanism includes a welding head base 1 and a welding head 2. A head connecting part 3 is installed at the front end of the welding head base 1. The welding head base 1 is movably connected to the welding head 2 through the head connecting part 3 and the connecting mechanism. The top of the welding head 2 is provided with two T-shaped limiting strips 9, and one end of each T-shaped limiting strip 9 is provided with a V-shaped limiting part 10. The bottom of the welding head base 1 is provided with two T-shaped grooves 11 corresponding to the T-shaped limiting strips 9, and the front end of the two T-shaped grooves 11 is provided with a V-shaped part corresponding to the V-shaped limiting part 10.

[0022] The connecting mechanism includes a pressure head stop block 4, two spring pillars 5, two springs 6, a pressure head stop fixing block 7, and two pressure head stop fixing screws 8. The pressure head stop fixing block 7 is installed on the pressure head connecting part 3 and is threadedly connected to the welded pressure head base 1 through the two pressure head stop fixing screws 8. The two springs 6 are sleeved on the corresponding spring pillars 5, and both spring pillars 5 are connected to the pressure head stop fixing block 7 so that the pressure head stop block 4 is installed with the pressure head connecting part 3.

[0023] Furthermore, based on Embodiment 1, the pressure head stop block 4 includes a toggle lever 401, with ear plate connecting portions 402 at both ends of the toggle lever 401, and an insertion portion 403 at the end of each of the two ear plate connecting portions 402; the pressure head connecting portion 3 has insertion slots 301 at both ends, with the two insertion slots 301 corresponding to the two insertion portions 403; when the insertion portion 403 is connected to the insertion slot 301, it abuts against the end of the T-shaped limiting strip 9.

[0024] Quick-change process for welding pressure head; Welding head base: Used to fix the welding head base; Pressure head stop spring: provides elastic force to the pressure head stop block; Pressure head stop block: used to limit the welding pressure head; Pressure head stop fixing block: Fix the pressure head stop block; Screws for fixing the pressure head stop: Connect and fix the pressure head stop and weld the pressure head base; Welding head: Used to provide pressure during battery tab welding.

[0025] 1. The welding head base and the head stop fixing block are connected by the head stop fixing screws; 2. The pressure head stop spring and pressure head stop block are installed into the welding pressure head base. When changing different welding pressure heads, the pressure head stop block needs to be pushed upward first. The welding pressure head base contains a T-slot for limiting the welding pressure head in the Z and Y directions, and a V-slot for limiting the welding pressure head in the X direction. Then push in the welding pressure head. The welding pressure head has a T-shaped structure for engaging with the T-slot of the welding pressure head base, and a V-shaped structure for engaging with the V-slot of the welding pressure head base. After the welding pressure head is fully pushed in, the pressure head stop block is lowered. The pressure head stop block returns to its initial position under the spring force and its own weight, completing the X-limiting of the welding pressure head.

[0026] When welding different soft-pack batteries, only the welding area of ​​the welding head needs to be changed when designing the welding head; the assembly method and position of the welding head and the welding head base do not need to be changed.

[0027] This solution increases the ability to weld the tabs of different pouch batteries by changing different types of welding heads; it also increases the efficiency of head replacement by eliminating the need for screws or other fasteners.

[0028] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A quick replacement mechanism for laser welding jigs for different soft package batteries, comprising a welding jig base (1) and a welding jig (2), characterized in that, The front end of the welding head base (1) is equipped with a head connecting part (3), and the welding head base (1) is movably connected to the welding head (2) through the head connecting part (3) and the connecting mechanism. The connecting mechanism includes a pressure head stop block (4), two spring pillars (5), two springs (6), a pressure head stop fixing block (7), and two pressure head stop fixing screws (8). The top of the welding head (2) is provided with two T-shaped limiting strips (9), and one end of each of the two T-shaped limiting strips (9) is provided with a V-shaped limiting part (10). The bottom of the welding head base (1) is provided with two T-shaped grooves (11) corresponding to the T-shaped limiting strips (9), and the front end of the two T-shaped grooves (11) is provided with a V-shaped part corresponding to the V-shaped limiting part (10).

2. The quick replacement mechanism for laser welding pressure head for different soft package batteries according to claim 1, characterized in that, The pressure head stop fixing block (7) is installed on the pressure head connection part (3) and is threadedly connected to the welded pressure head base (1) by two pressure head stop fixing screws (8).

3. The quick replacement mechanism for laser welding pressure head for different soft package batteries according to claim 2, characterized in that, The two springs (6) are sleeved on the corresponding spring posts (5), and the two spring posts (5) are connected to the pressure head stop fixing block (7) so that the pressure head stop block (4) is installed with the pressure head connection part (3).

4. The quick replacement mechanism for laser welding pressure head for different pouch cells according to claim 1, wherein, The pressure head stop block (4) includes a toggle rod (401), and the two ends of the toggle rod (401) are provided with ear plate connecting parts (402), and the ends of the two ear plate connecting parts (402) are provided with insertion parts (403).

5. A quick-change mechanism for laser welding pressure heads of different soft-pack batteries according to claim 4, characterized in that, The pressure head connection part (3) is provided with insertion slots (301) at both ends, and the two insertion slots (301) correspond to two insertion parts (403).

6. A quick-change mechanism for laser welding pressure heads of different soft-pack batteries according to claim 5, characterized in that, When the insertion part (403) is connected to the insertion slot (301), it abuts against the end of the T-shaped limiting strip (9).

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