Welding equipment compatible with CTP whole package and module

Abstract

The utility model discloses welding equipment compatible with a CTP whole package and a module, which comprises a module welding module, a CTP welding module and a robot module, the module welding module comprises a first workbench, a module welding assembly horizontally erected above the first workbench and a jacking assembly which is located under the module welding assembly and can vertically ascend and descend relative to the module welding assembly. The CTP welding module comprises a three-axis driving assembly, a CTP welding assembly arranged at the driving end of the three-axis driving assembly and a CTP trolley used for transferring a whole CTP bag. The robot module comprises a robot and a first laser device located at the movable end of the robot, and the first laser device can be driven by the robot to conduct laser welding on the to-be-welded assemblies on the module welding module and the CTP welding module. According to the welding equipment, the automation degree and the intelligence degree are high, Busbar welding of a whole CTP package and a module can be achieved through the same work station, the utilization rate of the robot is improved to a great extent, and the investment on the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing equipment, in particular to a welding device compatible with a CTP whole package and a module. Background Art

[0002] CTP whole pack and module are two different structures in battery pack design. Among them, CTP whole pack is a module-free technology, that is, the battery cell is directly integrated into the battery pack, eliminating the intermediate link of the battery module. Therefore, the integration and space utilization of CTP whole pack are higher, and the battery pack can be lightweight and have high energy density. The battery pack with module structure is composed of battery cells first to form modules, and then the modules to form battery packs. The structure is more stable and easy to maintain and reuse.

[0003] During the assembly process of CTP packages and modules, the battery poles need to be connected to the bars to achieve series / parallel connection between multiple battery cells. The existing welding equipment is carried out separately on two production lines, the equipment cost is high, and the robot module has the problem of idleness. Utility Model Content

[0004] In order to solve one or more of the above technical problems, the present application provides a welding device compatible with CTP whole package and module, including:

[0005] A module welding module, the module welding module comprising a first workbench, a module welding assembly horizontally erected above the first workbench, and a jacking assembly located directly below the module welding assembly and capable of vertically lifting and lowering relative to the module welding assembly, the jacking assembly and the module welding assembly together press and fix the assembly to be welded;

[0006] A CTP welding module, the CTP welding module comprising a three-axis driving assembly, a CTP welding assembly arranged at the driving end of the three-axis driving assembly, and a CTP trolley for transferring a whole CTP package, wherein the CTP welding assembly, driven by the three-axis driving assembly, presses and fixes the assembly to be welded on the CTP trolley;

[0007] A robot module is located between the module welding module and the CTP welding module, and includes a robot and a first laser located at the movable end of the robot. The first laser can perform laser welding on the module welding module and the components to be welded on the CTP welding module under the drive of the robot. The beneficial effect is that the busbar welding of the module and the CTP package can be realized at the same workstation, with a high degree of automation and intelligence, which can greatly improve the utilization rate of the robot and reduce the investment in equipment.

[0008] Furthermore, the module welding assembly includes columns, a first pressing plate assembly, and a first copper nozzle assembly.

[0009] There are four groups of columns, which are respectively vertically arranged at the four top corners of the first workbench.

[0010] The first pressing plate assembly includes a first pressing plate and a second pressing plate. The first pressing plate is horizontally arranged at the top of the column, and two rectangular square holes are arranged side by side in the middle of the first pressing plate along the first direction. The second pressing plate is arranged below the first pressing plate, and a plurality of welding through holes are arranged side by side at positions corresponding to the rectangular square holes on the second pressing plate.

[0011] There are two groups of the first copper nozzle assemblies, which are arranged side by side on both sides of the first pressing plate assembly, and include a plurality of first copper nozzle bodies and a first gas guiding pipe component that is conducted with the first copper nozzle body. The first copper nozzle body is arranged at the welding through hole. The beneficial effect is that the fixation of the component to be welded is more stable, facilitating the robot to carry a laser to perform Busbar welding on the component to be welded.

[0012] Furthermore, the first gas guiding pipe component includes a first connecting pipe, a second connecting pipe, a first manifold pipe, and a second manifold pipe. The first manifold pipe is arranged on the upper surface of the second pressing plate along the first direction, the second manifold pipe is arranged on the upper surface of the first pressing plate along the first direction, there are a plurality of first connecting pipes for connecting the copper nozzle body and the first manifold pipe, and there are a plurality of second connecting pipes for connecting the first manifold pipe and the second manifold pipe. The beneficial effect is that it can better protect the welding part and improve the welding quality.

[0013] Furthermore, the lifting assembly includes a fixing plate, a lifting plate located above the fixing plate, a sliding assembly located between the fixing plate and the lifting plate, and a lifting driving assembly for driving the lifting plate to perform vertical lifting. There are four groups of the sliding assemblies, which are respectively arranged at the four top corners of the fixing plate, and include vertical guide rails and sliders that can be movably arranged on the guide rails. The sliders are fixedly arranged on the fixing plate through first fixing blocks, the guide rails are fixedly arranged on the lifting plate through second fixing blocks, and slot holes for the up and down movement of the guide rails are opened at the four top corners of the fixing plate. The beneficial effect is that the component to be welded is lifted upward by the lifting assembly and is pressed and fixed together with the first pressing plate assembly, which can be applicable to the fixation of components to be welded with different sizes.

[0014] Furthermore, the CTP welding assembly includes a second pressing plate assembly and a second copper nozzle assembly. The second pressing plate assembly includes a vertical plate and a horizontal plate. The vertical plate is fixedly arranged at the driving end of the three-axis driving assembly, and the horizontal plate is horizontally arranged at the lower end of the vertical plate. The second copper nozzle assembly includes a plurality of second copper nozzle bodies and a second air duct member communicated with the second copper nozzle bodies. The second copper nozzle bodies are arranged under the horizontal plate.

[0015] Furthermore, the welding equipment further includes a conveying line module. The conveying line module penetrates through the middle of the first workbench along the first direction and is used for conveying the component to be welded to the module welding module. It includes a conveying rack with upper and lower layers and elevators located on both sides of the conveying rack. Each layer of the conveying rack is provided with a horizontally driven conveying chain, and a supporting tray is arranged on the conveying chain. The supporting tray can be switched between the double-layer structure of the conveying rack under the drive of the elevator. The beneficial effect is that it can complete the automatic conveying of the component to be welded, improving the automation degree and production efficiency of the equipment.

[0016] Furthermore, a module addressing module and a module cleaning module are also arranged upstream of the module welding module.

[0017] The module addressing module includes a second workbench, a first three-axis module erected above the second workbench, and a first photographing assembly arranged at the driving end of the first three-axis module. The second workbench straddles both sides of the conveying rack. The first photographing assembly takes pictures and analyzes the positions of the pole columns of the battery cell module under the drive of the first three-axis module.

[0018] The module cleaning module is located in the next process of the module addressing module. It includes a third workbench, a second three-axis module erected above the third workbench, and a second laser arranged at the driving end of the second three-axis module. The second laser cleans the pole columns of the battery cell module under the drive of the second three-axis module. The beneficial effect is that it is convenient for the robot module to perform Busbar welding on the battery cell module according to the addressing data, improving the welding precision and welding quality of the equipment.

[0019] Furthermore, the welding device further includes a CTP addressing and cleaning module, which is located upstream of the CTP welding module and includes a fourth workbench, a third three-axis module installed above the fourth workbench, a second photographing component, and a third laser. The third three-axis module has two driving ends, and the second photographing component and the third laser are respectively arranged at the two driving ends of the third three-axis module, and under the drive of the third three-axis module, they perform photographing analysis and laser cleaning on the poles of the CTP whole package on the CTP trolley. The beneficial effect is that it is convenient for the robot module to perform Busbar welding on the CTP whole package according to the addressing data, improving the yield rate of Busbar welding.

[0020] Furthermore, the welding device further includes:

[0021] a loading lifting mechanism, which is located at the front end of the conveyor line module and is used to complete the loading of the battery cell module;

[0022] an unloading lifting mechanism, which is located at the rear end of the conveyor line module and is used to complete the unloading of the battery cell module.

[0023] Furthermore, a third photographing component is further arranged at the movable end of the robot. The third photographing component, under the drive of the robot, takes pictures of the pole positions of the components to be welded on the module welding module and the CTP welding module. The beneficial effect is that it can perform photographing and ranging on the components to be welded, which is convenient for the robot module to perform Busbar welding on the components to be welded according to the addressing data of the previous station, improving the welding quality and welding accuracy of Busbar welding.

[0024] The beneficial effect of the technical solution of the present utility model is that: through the reasonable setting of the module welding module, the CTP welding module, and the robot module in the embodiments of the present application, it is possible to realize the Busbar welding of the battery cell module and the CTP whole package at the same workstation, with a high degree of automation and intelligence, which can greatly improve the utilization rate of the robot and reduce the investment in equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic perspective view of a welding device compatible with CTP whole packages and modules shown in an embodiment of the present application;

[0026] Figure 2 is Figure 1 a schematic structural view of the welding module of a welding device compatible with CTP whole packages and modules shown;

[0027] Figure 3 is Figure 2 a schematic structural view of the module welding component of the module welding module of the welding module shown;

[0028] Figure 4 、 5 are Figure 3 front and back schematic views of the first pressing plate assembly of the module welding assembly shown;

[0029] Figure 6 are Figure 3 structural schematic view of the first copper nozzle assembly of the module welding assembly shown;

[0030] Figure 7 are Figure 2 structural schematic view of the CTP welding module of the welding module shown;

[0031] Figure 8 are Figure 1 structural schematic view of the module addressing module and the module cleaning module of a welding device compatible with CTP whole package and module shown;

[0032] Figure 9 are Figure 1 structural schematic view of the CTP addressing and cleaning module of a welding device compatible with CTP whole package and module shown;

[0033] Reference numerals in the figure: 100, module welding module; 110, first workbench; 120, module welding assembly; 121, column; 122, first pressing plate assembly; 1221, first pressing plate; 12211, rectangular square hole; 1222, second pressing plate; 12221, welding through hole; 123, first copper nozzle assembly; 1231, first copper nozzle body; 1232, first air duct component; 130, lifting assembly; 131, fixing plate; 1311, slot hole; 132, lifting plate; 133, sliding assembly; 1331, slide rail; 1332, slider; 134, lifting drive assembly; 200, CTP welding module; 210, three-axis drive assembly; 220, CTP welding assembly; 221, second pressing plate assembly; 222, second copper nozzle assembly; 230, CTP trolley; 300, robot module; 310, robot; 320, first laser; 330, third photographing assembly; 400, conveying line module; 500, module addressing module; 510, second workbench; 520, first three-axis module; 530, first photographing assembly; 600, module cleaning module; 610, third workbench; 620, second three-axis module; 630, second laser; 700, CTP addressing and cleaning module; 710, fourth workbench; 720, third three-axis module; 730, second photographing assembly; 740, third laser; 800, loading lifting mechanism; 900, unloading lifting mechanism. Detailed implementation manners

[0034] To enable those skilled in the art to better understand the solution of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0035] Figure 2 The structural schematic diagram of the welding module of a welding device compatible with CTP whole packages and modules of the present utility model is schematically shown, including a module welding module 100, a CTP welding module 200, and a robot module 300. The module welding module 100 includes a first workbench 110, a module welding assembly 120 horizontally arranged above the first workbench 110, and a first lifting assembly 130 located directly below the module welding assembly 120 and capable of vertically lifting relative to the module welding assembly 120. The first lifting assembly 130 and the module welding assembly 120 together press and fix the component to be welded; the CTP welding module 200 includes a three-axis driving assembly 210, a CTP welding assembly 220 arranged at the driving end of the three-axis driving assembly 210, and a CTP trolley 230 for transferring the CTP whole package. The CTP welding assembly 220 can press and fix the component to be welded located on the CTP trolley 230 under the drive of the three-axis driving assembly 210; the robot module 300 is located between the module welding module 100 and the CTP welding module 200, including a robot 310 and a first laser 320 arranged at the movable end of the robot 310. The first laser 320 can perform laser welding on the components to be welded on the module welding module 100 and the CTP welding module 200 under the drive of the robot 310.

[0036] The robot module 300 of the welding device in the embodiment of the present application is located between the module welding module 100 and the CTP welding module 200, and can perform laser welding on the battery cell module assembled with a busbar on the module welding module 100 and the CTP whole package assembled with a busbar on the CTP welding module 200, realizing the busbar welding of the battery cell module and the CTP whole package at the same workstation, with a relatively high degree of intelligence, improving the utilization rate of the robot, and reducing the investment in equipment.

[0037] It should be noted here that the CTP complete pack and the module are two different structures in the battery pack design. Among them, the CTP complete pack is a module-free technology, that is, the battery cells are directly integrated into the battery pack, eliminating the intermediate link of the battery module. Therefore, the CTP complete pack has higher integration and space utilization, and can achieve the lightweight and high energy density of the battery pack. The battery pack with a module structure is composed of battery cells first forming modules, and then the modules forming the battery pack. The structure is more stable, and it is easier to repair and reuse in a ladder manner. During the assembly process of the CTP complete pack and the module, it is necessary to weld the busbar on the pole columns of the battery cells to achieve series / parallel connection between multiple battery cells. The component to be welded in the embodiments of the present application is the CTP complete pack or the battery cell module assembled with the busbar.

[0038] Specifically, as shown in Figure 2 -6, the module welding assembly 120 includes columns 121, a first pressing plate assembly 122, and a first copper nozzle assembly 123. There are four groups of columns 121, which are respectively vertically arranged at the four top corners of the first workbench 110; the first pressing plate assembly 122 includes a first pressing plate 1221 and a second pressing plate 1222. The first pressing plate 1221 is horizontally arranged at the top of the column 121, and two rectangular square holes 12211 are arranged side by side in the middle of the first pressing plate 1221 along the first direction. The second pressing plate 1222 is arranged below the first pressing plate 1221, and a plurality of welding through holes 12221 are arranged side by side at positions corresponding to the rectangular square holes 12211 on the second pressing plate 1222; there are two groups of the first copper nozzle assembly 123, which are arranged side by side on both sides of the first pressing plate assembly 122, and include a plurality of first copper nozzle bodies 1231 and a first gas guide pipe member 1232 electrically connected to the first copper nozzle body 1231. The first copper nozzle body 1231 is arranged at the welding through hole 12221. The first gas guide pipe member 1232 includes a first connecting pipe 12321, a second connecting pipe 12322, a first manifold 12323, and a second manifold 12324. The first manifold 12323 is arranged along the first direction on the upper surface of the second pressing plate 1222, the second manifold 12324 is arranged along the first direction on the upper surface of the first pressing plate 1221, there are a plurality of first connecting pipes 12321 for connecting the first copper nozzle body 1231 and the first manifold 12323, and there are a plurality of second connecting pipes 12322 for connecting the first manifold 12323 and the second manifold 12324. The module welding assembly 120 of the present application is provided in a matching manner with the battery cell module to be welded. Through the setting of the first pressing plate assembly 122 and the first copper nozzle assembly 123, the busbar can be accurately pressed and fixed on the pole columns of the battery cell module, which is convenient for the robot module 300 to weld the battery cell module, and can greatly improve the welding quality and welding efficiency of the equipment.

[0039] Furthermore, the first lifting assembly 130 includes a fixing plate 131, a lifting plate 132 located above the fixing plate 131, a sliding assembly 133 located between the fixing plate 131 and the lifting plate 132, and a lifting drive assembly 134 for driving the lifting plate 132 to vertically lift. There are four groups of sliding assemblies 133, which are respectively arranged at the four top corners of the fixing plate 131. The sliding assembly 133 includes a vertical slide rail 1331 and a slider 1332 that can be movably arranged on the slide rail 1331. The slider 1332 is fixedly arranged on the fixing plate 131 through a first fixing block 1333, and the slide rail 1331 is fixedly arranged on the lifting plate 132 through a second fixing block 1334. Slot holes 1311 for the up-and-down movement of the slide rail 1331 are opened at the four top corners of the fixing plate 131. Thus, the first lifting assembly 130 lifts the battery cell module assembled with the bar piece upward, so that the battery cell module assembled with the bar piece is pressed and fixed between the lifting plate 132 and the first pressing plate assembly 122, facilitating the robot module 300 to perform Busbar welding on the component to be welded, and improving the welding quality and welding precision of the equipment.

[0040] Furthermore, as shown in Figure 7 , the CTP welding assembly 220 includes a second pressing plate assembly 221 and a second copper nozzle assembly 222. The second pressing plate assembly 221 includes a vertical plate and a horizontal plate. The vertical plate is fixedly arranged at the driving end of the three-axis driving assembly 210, and the horizontal plate is horizontally arranged at the lower end of the vertical plate. The second copper nozzle assembly 222 includes a plurality of second copper nozzle bodies and a second air duct member communicated with the second copper nozzle bodies. The second copper nozzle bodies are arranged under the horizontal plate. Thus, the CTP trolley transports the CTP battery pack assembled with the bar piece to the CTP welding module 200, and the three-axis driving assembly 210 drives the second pressing plate assembly 221 to press and fix the CTP whole pack on the CTP trolley, facilitating the robot module 300 to perform Busbar welding on the CTP whole pack.

[0041] Furthermore, as shown in Figure 1As shown, the welding equipment of the present application is also provided with a conveyor line module 400, which passes through the middle of the first workbench 110 along the first direction, and is used to convey the components to be welded to the module welding module 100, including a conveyor frame with an upper and lower layer and elevators located on both sides of the conveyor frame, each layer of the conveyor frame is provided with a horizontally driven conveyor chain, and the conveyor chain is provided with a supporting tray, and the supporting tray can be switched on the double-layer structure of the conveyor frame under the drive of the elevator. Thus, the battery cell module assembled with the bar piece is transported by the conveyor chain to the top of the first lifting assembly 130 of the module welding module 100, and the lifting drive assembly 134 drives the lifting plate 132 to lift upward, and the first copper nozzle body 1231 fixed under the first pressure plate assembly 122 presses the bar piece onto the pole of the battery cell module, and the robot 310 carries the laser 320 to perform laser welding on the battery cell module. After the welding is completed, the lifting drive assembly 132 drives the lifting plate 132 to descend and puts the battery cell module back to the conveyor chain, which greatly improves the degree of automation of the welding equipment of the present application.

[0042] Further, combined with Figure 8 As shown, in order to improve the welding accuracy and welding quality of the welding equipment of the embodiment of the present application, a module addressing module 500 and a module cleaning module 600 are also arranged upstream of the module welding module 100. The module addressing module 500 includes a second workbench 510, a first three-axis module 520 mounted above the second workbench 510, and a first camera assembly 530 arranged at the driving end of the first three-axis module 520. The second workbench 510 is arranged on both sides of the conveyor frame 410. The first camera assembly 530 can take photos and analyze the pole position of the battery module under the drive of the first three-axis module 520. The laser cleaning module 600 is located in the next process of the module addressing module 500, including a third workbench 610, a second three-axis module 620 mounted above the third workbench 610, and a second laser 630 arranged at the driving end of the second three-axis module 620. The second laser 630 cleans the pole of the battery module under the drive of the second three-axis module 620.

[0043] Further, combined with Figure 9 As shown, a CTP addressing and cleaning module 700 is also provided upstream of the CTP welding module 200. The CTP addressing and cleaning module 700 is located upstream of the CTP welding module 200, and includes a fourth workbench 710, a third three-axis module 720 mounted above the fourth workbench 710, a second camera assembly 730 and a third laser 740. The third three-axis module 720 has two driving ends, and the second camera assembly 730 and the third laser 740 are respectively arranged at the two driving ends of the third three-axis module 720. Under the drive of the third three-axis module 720, the poles of the entire CTP package on the CTP trolley 210 are photographed, analyzed and laser cleaned.

[0044] Further, in combination with Figure 1 As shown, a loading lifting mechanism 800 and an unloading lifting mechanism 900 are respectively arranged at the front and rear ends of the conveyor line module 400. The loading lifting mechanism 800 is used to complete the automatic loading of the battery cell module, and the unloading lifting mechanism 900 is used to complete the automatic unloading of the battery cell module, further improving the automation degree of the welding equipment.

[0045] Further, in combination with Figure 2 As shown, a third photographing component 330 is further arranged at the movable end of the robot 310. The third photographing component 330 takes pictures and measures distances of the components to be welded located on the module welding module 100 and the CTP welding module 200 under the drive of the robot 310.

[0046] In summary, the welding equipment of the present application has a high degree of automation and intelligence, and can realize the Busbar welding of the battery cell module and the CTP whole package at the same workstation, reducing the investment in equipment.

[0047] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A welding device compatible with CTP whole packages and modules, characterized in that Comprising: A module welding module (100), the module welding module (100) includes a first workbench (110), and a module welding assembly (120) horizontally arranged above the first workbench (110). And a lifting assembly (130) located directly below the module welding assembly (120) and capable of vertically lifting relative to the module welding assembly (120), the lifting assembly (130) and the module welding assembly (120) together press and fix the component to be welded. A CTP welding module (200), the CTP welding module (200) includes a three-axis drive assembly (210), a CTP welding assembly (220) arranged at the drive end of the three-axis drive assembly (210), and a CTP trolley (230) for transferring the CTP whole package. The CTP welding assembly (220) presses and fixes the component to be welded located on the CTP trolley (230) under the drive of the three-axis drive assembly (210). A robot module (300), the robot module (300) is located between the module welding module (100) and the CTP welding module (200), includes a robot (310) and a first laser (320) located at the movable end of the robot (310). The first laser (320) can perform laser welding on the components to be welded on the module welding module (100) and the CTP welding module (200) under the drive of the robot (310).

2. The welding device according to claim 1, characterized in that, The module welding assembly (120) includes columns (121), a first pressing plate assembly (122), and a first copper nozzle assembly (123). There are four groups of the columns (121), which are respectively vertically arranged at the four top corners of the first workbench (110). The first pressing plate assembly (122) includes a first pressing plate (1221) and a second pressing plate (1222). The first pressing plate (1221) is horizontally arranged at the top of the column (121), and two rectangular square holes (12211) are arranged side by side in the middle of the first pressing plate (1221) along the first direction. The second pressing plate (1222) is arranged below the first pressing plate (1221), and a plurality of welding through holes (12221) are arranged side by side at the positions corresponding to the rectangular square holes (12211) on the second pressing plate (1222). There are two groups of the first copper nozzle assemblies (123), which are arranged side by side on both sides of the first pressing plate assembly (122), and include a plurality of first copper nozzle bodies (1231) and a first air duct component (1232) communicated with the first copper nozzle bodies (1231). The first copper nozzle bodies (1231) are arranged at the welding through holes (12221).

3. The welding device according to claim 2, wherein The first air duct member (1232) includes a first connecting pipe (12321), a second connecting pipe (12322), a first confluence pipe (12323) and a second confluence pipe (12324). The first confluence pipe (12323) is arranged above the second pressing plate (1222) along a first direction. The second confluence pipe (12324) is arranged above the first pressing plate (1221) along the first direction. There are a plurality of the first connecting pipes (12321) for connecting the copper nozzle body (1231) and the first confluence pipe (12323). There are a plurality of the second connecting pipes (12322) for connecting the first confluence pipe (12323) and the second confluence pipe (12324).

4. The welding device according to claim 1, wherein The jacking assembly (130) includes a fixed plate (131), a lifting plate (132) located above the fixed plate (131), a sliding assembly (133) located between the fixed plate (131) and the lifting plate (132), and a lifting drive assembly (134) for driving the lifting plate (132) to vertically lift. There are four groups of the sliding assemblies (133), which are respectively arranged at four top corners of the fixed plate (131), and each includes a vertically oriented slide rail (1331) and a slider (1332) movably arranged on the slide rail (1331). The slider (1332) is fixedly arranged on the fixed plate (131) through a first fixing block. The slide rail (1331) is fixedly arranged on the lifting plate (132) through a second fixing block. Slots for the up-and-down movement of the slide rail (1331) are formed at four top corners of the fixed plate (131).

5. The welding device according to claim 1, wherein, The CTP welding assembly (220) includes a second pressing plate assembly (221) and a second copper nozzle assembly (222). The second pressing plate assembly (221) includes a vertical plate and a horizontal plate. The vertical plate is fixedly arranged at the driving end of the three-axis driving assembly (210). The horizontal plate is horizontally arranged at the lower end of the vertical plate. The second copper nozzle assembly (222) includes a plurality of second copper nozzle bodies and a second air duct member communicating with the second copper nozzle bodies. The second copper nozzle bodies are arranged below the horizontal plate.

6. The welding device according to claim 1, characterized in that, It further includes a conveying line module (400). The conveying line module (400) penetrates through the middle of the first workbench (110) along a first direction for conveying the assembly to be welded to the module welding module (100). It includes a conveying rack with upper and lower layers and elevators located on both sides of the conveying rack. Each layer of the conveying rack is provided with a horizontally driven conveying chain. A supporting tray for carrying is arranged on the conveying chain. The supporting tray can be switched between the double-layer structure of the conveying rack under the drive of the elevator.

7. The welding device according to claim 6, wherein Upstream of the module welding module (100), a module addressing module (500) and a module cleaning module (600) are further arranged. The module addressing module (500) includes a second workbench (510), a first three-axis module (520) installed above the second workbench (510), and a first photographing assembly (530) disposed at the driving end of the first three-axis module (520). The second workbench (510) straddles both sides of the conveying rack. The first photographing assembly (530) takes pictures and analyzes the positions of the pole columns of the battery cell module under the drive of the first three-axis module (520). The module cleaning module (600) is located in the next process of the module addressing module (500), and includes a third workbench (610), a second three-axis module (620) installed above the third workbench (610), and a second laser (630) disposed at the driving end of the second three-axis module (620). The second laser (630) cleans the pole columns of the battery cell module under the drive of the second three-axis module (620).

8. The welding device according to claim 1, characterized in that, It further includes a CTP addressing and cleaning module (700). The CTP addressing and cleaning module (700) is located upstream of the CTP welding module (200), and includes a fourth workbench (710), a third three-axis module (720) installed above the fourth workbench (710), a second photographing assembly (730), and a third laser (740). The third three-axis module (720) has two driving ends. The second photographing assembly (730) and the third laser (740) are respectively disposed at the two driving ends of the third three-axis module (720), and take pictures and analyze and laser clean the pole columns of the CTP whole package on the CTP trolley (210) under the drive of the third three-axis module (720).

9. The welding device according to claim 6, wherein It further includes: a loading lifting mechanism (800), which is located at the front end of the conveying line module (400) and is used to complete the loading of the battery cells; an unloading lifting mechanism (900), which is located at the rear end of the conveying line module (400) and is used to complete the unloading of the battery cells.

10. The welding device according to claim 1, characterized in that, A third photographing assembly (330) is further disposed at the movable end of the robot (310). The third photographing assembly (330) takes pictures of the positions of the pole columns of the components to be welded on the module welding module (100) and the CTP welding module (200) under the drive of the robot (310).

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