Battery box laser welding tool

Abstract

The invention belongs to the technical field of battery box welding, and discloses a battery box laser welding tool which comprises a tool platform arranged on a workbench and located on the two sides of a main body of a battery box. The tool platform comprises a base fixedly installed on the workbench, threaded guide rods fixedly connected to the two ends of the base, a lifting beam movably arranged on the threaded guide rods in a sleeving mode and a fixed platform fixedly arranged on the threaded guide rods in a sleeving mode. A lifting air cylinder is fixedly installed at the bottom of the lifting beam, and the end of a piston rod of the lifting air cylinder is fixedly connected with and abuts against the fixed platform to be used for increasing the overall height of the lifting beam. According to the invention, the lifting beam is lifted to the height of the battery box body through the jacking of the lifting cylinder, so that the driving type positioning module II can position the battery box body and the cover body. The height of the lifting beam can be adjusted, blade battery boxes of different specifications and models can be lifted, the lifting beam adapts to the height of the blade battery boxes, and universality is achieved for batteries of different models.

Description

Technical Field

[0001] The invention belongs to the technical field of battery box welding, and in particular is a battery box laser welding tool. Background Art

[0002] The battery box is an important component of the battery assembly. Electrodes are provided on the cover of the battery box. In order to prevent the battery box from being damaged by contamination in the external environment, it is necessary to weld and seal the cover and the battery box. Laser welding is usually used. The existing laser welding tooling for battery boxes is usually customized for battery boxes of a certain specification, which brings relatively high costs and design time costs. And the tooling designs of the same blade battery boxes are similar, but the fixed tooling fixtures make it difficult for them to be used interchangeably. The universality is poor.

[0003] Therefore, the present application proposes a battery box laser welding tool for universal positioning of the welding of the blade battery box. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a battery box laser welding tool.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a battery box laser welding tool, comprising a tool platform, which is arranged on a workbench and located on both sides of the main body of the battery box;

[0006] The tooling platform comprises a base fixedly mounted on the workbench, threaded guide rods fixedly connected to both ends of the base, a lifting beam movably sleeved on the threaded guide rods, and a fixed platform fixedly sleeved on the threaded guide rods, a lifting cylinder is fixedly mounted on the bottom of the lifting beam, and the end of the piston rod of the lifting cylinder is fixedly connected and supported on the fixed platform to increase the overall height of the lifting beam;

[0007] The welding tool also includes two sets of driven positioning modules 2 symmetrically arranged on the lifting beam, and an adjustable driven positioning module 1 arranged on the workbench for positioning the battery box;

[0008] The second drive positioning module is used to limit the two symmetrical sides of the battery box top cover, and two groups of third drive positioning modules are symmetrically arranged on the lifting beam to limit the other two sides of the battery box top cover.

[0009] Preferably, the driven positioning module 2 includes a telescopic positioning rod that can be clamped on both sides of the top cover and a linear guide slider installed on the lifting beam, both ends of the telescopic positioning rod are installed on the linear guide slider through a set of fixing parts 2 and a cantilever, the cantilever is movably sleeved in the linear guide slider, a propulsion cylinder 2 is installed at the bottom of the lifting beam, a support shaft is connected between the two sets of cantilevers, and the telescopic end of the propulsion cylinder 2 is connected to control the advance and retreat of the telescopic positioning rod.

[0010] Preferably, one of the driven positioning modules 2 includes a pressure-sensitive element threadedly connected to the cantilever, a spring is elastically supported between the pressure-sensitive element and the linear guide slider, a rear positioning rod is arranged at one end of the cantilever that passes through the linear guide slider, and the two cantilevers are commonly connected to a rear positioning rod.

[0011] Preferably, one of the second drive positioning modules is provided with an anti-deformation adsorption component capable of adsorbing the top cover of the battery box to prevent the top cover of the battery box from deforming, and the anti-deformation adsorption component includes one or more telescopic cylinders hingedly mounted on the rear positioning rod, a rotating arm rotatably mounted on the support shaft, and a suction cup fixedly mounted on the end of the rotating arm;

[0012] The rotating arm is hinged to the telescopic end of the telescopic cylinder to control the turning of the rotating arm.

[0013] Preferably, the driven positioning module 1 comprises a propulsion cylinder 1 arranged on the workbench, the telescopic end of the propulsion cylinder 1 is drivingly connected to a parallelogram linkage mechanism, the passive rod of the parallelogram linkage mechanism is connected to a sliding base, and a positioning assembly is installed on the sliding base;

[0014] The positioning assembly is used to support the battery box body when the parallelogram linkage mechanism is extended;

[0015] Both ends of the sliding base are slidably mounted on a second slide rail arranged on the workbench.

[0016] Preferably, the positioning assembly comprises a support block slidably mounted on a sliding base, a positioning block 1 is fixedly mounted on the support block, and fixing members are arranged on both sides of the support block;

[0017] A through slot is provided on the sliding base along a straight line direction, and the fixing piece penetrates through and is fixed on the through slot by bolts, thereby fixing the supporting block on the sliding base.

[0018] Preferably, the other two sides of the battery box body are supported and positioned by a driven positioning module four, and the driven positioning module four includes a telescopic cylinder and a supporting assembly driven by the telescopic cylinder.

[0019] Preferably, the driven positioning module three includes a propulsion cylinder three installed on the lifting beam, the output end of the propulsion cylinder three is fixedly connected to a support arm, the end of the support arm is fixedly installed with a stud through a nut, the top of the stud is fixedly installed with a positioning block two through an angle iron, and the positioning block two is supported at both ends of the battery box top cover.

[0020] Preferably, the suction cup is connected to an external negative pressure machine, and the negative pressure adsorption area of ​​the suction cup is located in the middle of the battery box cover and is adjustable.

[0021] Preferably, the suction cup includes a central negative pressure zone, an end negative pressure zone, a side edge negative pressure zone 1 and a side edge negative pressure zone 2 which are opened and connected therein, the side edge negative pressure zone 2 is connected to the central negative pressure zone through the side edge negative pressure zone 1, the side edge negative pressure zone 2 and the side edge negative pressure zone 1 are connected or cut off by a knob valve arranged on their connecting passages, the end negative pressure zones are arranged at both ends of the suction cup, and the side edge negative pressure zone 1 and the side edge negative pressure zone 2 are respectively arranged at both side edges of the suction cup;

[0022] The bottom of the suction cup is provided with negative pressure holes which are respectively connected with the end negative pressure area, the side edge negative pressure area 1 and the side edge negative pressure area 2.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention uses a driven positioning module 1 and a driven positioning module 2 to perform positioning operations on the bottom and top of the battery box respectively. The driven positioning module 2 can be lifted or lowered vertically up and down with the lifting beam. The lifting beam is lifted to the height of the battery box body by the top support of the lifting cylinder, and then the driven positioning module 2 can position the battery box body and the cover body. The height of the lifting beam can be adjusted, and it can be lifted and lowered for blade battery boxes of different specifications and models to adapt to their heights, and it is universal for batteries of different models.

[0025] The battery box cover is fixed by suction cup to prevent stress deformation during welding. The suction cup is also improved for different specifications of battery box covers. The larger and smaller battery box covers are fixed by the adjustable negative pressure area. The adjustment method is simple and the performance is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a top view of the structure of the present invention;

[0028] Figure 3 It is a side view structural schematic diagram of the present invention;

[0029] Figure 4It is an isometric schematic diagram of the present invention;

[0030] Figure 5 For the present invention Figure 4 A magnified view of part A;

[0031] Figure 6 For the present invention Figure 4 A magnified view of part B;

[0032] Figure 7 It is a structural schematic diagram of the second drive positioning module of the present invention;

[0033] Figure 8 It is a top view schematic diagram of the driven positioning module 1 of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the suction cup of the present invention;

[0035] Fig.10 The figure is a layout diagram of the negative pressure holes at the bottom of the suction cup of the present invention;

[0036] Fig.11 It is a schematic diagram of the layout of the internal negative pressure area of ​​the present invention.

[0037] In the figure: 100, tooling platform; 101, base; 102, threaded guide rod; 103, fixed platform; 104, lifting beam; 1041, slide rail 1; 105, lifting cylinder; 200, driven positioning module 1; 201, propulsion cylinder 1; 202, parallelogram linkage mechanism; 203, positioning assembly; 2031, support block; 2032, positioning block 1; 2033, fixing member; 204, sliding base; 205, slide rail 2; 300, driven positioning module 2; 301, telescopic positioning rod; 302, fixing member 2; 303, cantilever; 304, pressure sensing element; 305, spring; 306, slider; 307, fixing part three; 308, linear guide slider; 309, propulsion cylinder two; 310, rear positioning rod; 311, support shaft; 400, anti-deformation adsorption component; 401, telescopic cylinder; 402, rotating arm; 403, suction cup; 4031, central negative pressure zone; 4032, end negative pressure zone; 4033, side edge negative pressure zone one; 4034, side edge negative pressure zone two; 4035, knob valve; 500, driven positioning module three; 501, positioning block two; 502, angle iron; 503, stud; 504, support arm; 505, propulsion cylinder three; 600, driven positioning module four. DETAILED DESCRIPTION

[0038] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0039] like Figures 1 to 11 As shown, the present invention provides a battery box laser welding tool, which is characterized by: comprising a tool platform 100, which is arranged on a workbench and located on both sides of the main body of the battery box;

[0040] The tooling platform 100 includes a base 101 fixedly mounted on the workbench, threaded guide rods 102 fixedly connected to both ends of the base 101, a lifting beam 104 movably sleeved on the threaded guide rods 102, and a fixed platform 103 fixedly sleeved on the threaded guide rods 102. A lifting cylinder 105 is fixedly mounted on the bottom of the lifting beam 104, and the piston rod end of the lifting cylinder 105 is fixedly connected and supported on the fixed platform 103 to increase the overall height of the lifting beam 104.

[0041] The welding tool also includes two sets of driven positioning modules 300 symmetrically arranged on the lifting beam 104, and an adjustable driven positioning module 200 arranged on the workbench for positioning the battery box;

[0042] The second driving positioning module 300 is used to limit the two symmetrical sides of the battery box top cover. Two groups of third driving positioning modules 500 are symmetrically arranged on the lifting beam 104 to limit the other two sides of the battery box top cover.

[0043] The driven positioning module 1 200 and the driven positioning module 2 300 are used to perform positioning operations on the bottom and top of the battery box, respectively. The driven positioning module 2 300 can be lifted or lowered vertically up and down with the lifting beam 104. The lifting beam 104 is extended by the lifting cylinder 105 so that it can be lifted, and the fixed platform 103 is installed on the threaded guide rod 102 through a nut, and can have an initial height. Provide an initial height platform, and then lift the lifting beam 104 to the height of the battery box body through the top support of the lifting cylinder 105, and then the driven positioning module 2 300 can position the battery box body and the cover body. The height of the lifting beam 104 can be adjusted, and it can be lifted and lowered according to blade battery boxes of different specifications and models to adapt to their height, and it is universal for batteries of different models.

[0044] like Figure 1-Figure 4 and Figure 7As shown, the driven positioning module 2 300 includes a telescopic positioning rod 301 that can be clamped on both sides of the top cover and a linear guide slider 308 installed on the lifting beam 104. Both ends of the telescopic positioning rod 301 are installed on the linear guide slider 308 through a set of fixing parts 2 302 and a cantilever 303. The cantilever 303 is movably sleeved in the linear guide slider 308. A propulsion cylinder 2 309 is installed at the bottom of the lifting beam 104. A support shaft 311 is connected between the two sets of cantilevers 303. The telescopic end of the propulsion cylinder 2 309 is connected to 3011 for controlling the advance and retreat of the telescopic positioning rod 301.

[0045] The second driving positioning module 300 can be raised and lowered along with the lifting beam 104, and adjusted along with the height of the battery box, so that the height of the telescopic positioning rod 301 is located at the upper end of the battery box. The horizontal projection of the telescopic positioning rod 301 can cover the cross section of the battery box cover, and the second propulsion cylinder 309 is controlled to drive the telescopic positioning rod 301 horizontally to support the edge of the battery box and the cover to achieve positioning of the battery box and the cover.

[0046] The telescopic positioning rod 301 is configured as two positioning rod bodies and a sliding rod slidably installed between the two rod bodies, so that the overall length of the telescopic positioning rod 301 can be controlled to adjust and adapt to battery boxes of different lengths and widths.

[0047] like Figure 7 As shown, one of the driven positioning modules 300 includes a pressure-sensing element 304 threadedly connected to the cantilever 303, a spring 305 is elastically supported between the pressure-sensing element 304 and the linear guide slider 308, a rear positioning rod 310 is arranged at one end of the cantilever 303 that passes through the linear guide slider 308, and the two cantilevers 303 are commonly connected to a rear positioning rod 310.

[0048] The above technical solution uses the pressure received by the pressure sensing element 304 to determine the displacement distance of the entire telescopic positioning rod 301. The propulsion cylinder 2 309 will cause pressure changes on the pressure sensing element 304 during the process of controlling the forward and backward displacement of the telescopic positioning rod 301. The current displacement length of the telescopic positioning rod 301 is determined by monitoring the pressure changes of the pressure sensing element 304, so that the corresponding telescopic length of the cylinder on the anti-deformation adsorption component 400 can be controlled subsequently to make the suction cup fall to the optimal suction position on the battery cover.

[0049] like Figure 1-Figure 4 As shown, one of the second driving positioning modules 300 is provided with an anti-deformation adsorption component 400 capable of adsorbing the top cover of the battery box to prevent the top cover of the battery box from deforming. The anti-deformation adsorption component 400 includes one or more telescopic cylinders 401 hingedly mounted on the rear positioning rod 310, a rotating arm 402 rotatably mounted on the support shaft 311, and a suction cup 403 fixedly mounted on the end of the rotating arm 402;

[0050] The rotating arm 402 is hinged to the telescopic end of the telescopic cylinder 401 to control the turning of the rotating arm 402 .

[0051] The anti-deformation adsorption component 400 is used to drive after the battery box and the cover are positioned. The telescopic cylinder 401 pushes the rotating arm 402 to flip and adsorb the suction cup 403 on the cover of the battery box. The position and shape of the cover are stabilized through firm adsorption to prevent it from bending or deviating during the welding process, thereby ensuring the quality of the welding to the greatest extent.

[0052] like Figure 1 As shown, the driven positioning module 200 includes a propulsion cylinder 201 disposed on a workbench, the telescopic end of the propulsion cylinder 201 is drivingly connected to a parallelogram linkage mechanism 202, the passive rod of the parallelogram linkage mechanism 202 is connected to a sliding base 204, and a positioning assembly 203 is installed on the sliding base 204;

[0053] The positioning assembly 203 is used to support the battery box body when the parallelogram linkage mechanism 202 is extended;

[0054] Both ends of the sliding base 204 are slidably mounted on a second slide rail 205 disposed on the workbench.

[0055] The two ends of the sliding base 204 are slidably installed on the slide rail 205, and the slide rail 205 is used to provide precise linear guidance. The sliding base 204 is connected to the parallelogram linkage 202, and the bottom of the rod body of the parallelogram linkage 202 connected to the piston rod of the propulsion cylinder 1 201 is provided with a guide rail for linear limiting. Therefore, the passive rod body on the other side of the parallelogram linkage 202 has a linear displacement in a direction perpendicular to the active rod body. By setting a sliding connection between the parallelogram linkage 202 and the sliding base 204, the parallelogram linkage 202 can be driven by the propulsion cylinder 1 201 to push the sliding base 204 to slide linearly along the slide rail 205. Then push the positioning assembly 203 to clamp the battery box horizontally. The two-side driven positioning module 1 200 is driven synchronously to position the battery box together.

[0056] like Figure 6 As shown, the positioning assembly 203 includes a support block 2031 slidably mounted on the sliding base 204, a positioning block 1 2032 is fixedly mounted on the support block 2031, and fixing members 2033 are provided on both sides of the support block 2031;

[0057] A through slot is formed on the sliding base 204 along a straight line direction, and the fixing member 2033 penetrates through and is fixed in the through slot by bolts, thereby fixing the supporting block 2031 on the sliding base 204 .

[0058] A thinner cushion layer is provided on the inner side of the positioning block 2032 for direct contact with the battery box to prevent the surface of the battery box from being worn due to greater pressure during rigid contact. The thickness of the cushion layer is relatively thin, not exceeding 1 mm, to prevent the inaccurate positioning of the battery box due to the clamping deformation of the cushion layer, resulting in insufficient welding accuracy. The support block 2031 is a mounting platform for the positioning block 2032, and its bottom is slidably installed on the sliding base 204, and its position on the sliding base 204 is fixed by the fixings 2033 on both sides. By adjusting the fixings 2033, the position of the support block 2031 can be adjusted along the straight line direction of the sliding base 204 to adapt to battery boxes of different sizes, lengths and widths. Therefore, its flexibility is relatively high, and it can adapt to the positioning of blade battery boxes within a certain specification range.

[0059] like Figure 3 and Figure 4 As shown, the other two sides of the battery box body are supported and positioned by a driven positioning module four 600, and the driven positioning module four 600 includes a telescopic cylinder and a supporting assembly driven by the telescopic cylinder.

[0060] The driven positioning module 4 600 is a positioning component disposed at both ends of the bottom of the battery box, and is used to cooperate with the driven positioning module 1 200 to position and clamp the bottom of the battery box from four directions. The supporting component on the driven positioning module 4 600 has the same structure as the positioning component 203, and a slide rail for linear guidance is disposed at its bottom.

[0061] like Figure 4 and Figure 5 As shown, the driven positioning module three 500 includes a propulsion cylinder three 505 installed on the lifting beam 104, the output end of the propulsion cylinder three 505 is fixedly connected to the support arm 504, the end of the support arm 504 is fixedly installed with a stud 503 through a nut, the top of the stud 503 is fixedly installed with a positioning block two 501 through an angle iron 502, and the positioning block two 501 is supported at both ends of the battery box top cover.

[0062] The propulsion cylinder 3 505 is arranged on the lifting beam 104, and its height is controlled synchronously with the lifting beam 104. When the positioning block 2 501 reaches the end of the battery box and pushes and clamps the cover body, the propulsion cylinder 3 505 is controlled to inlet air to support the support arm 504, and the positioning block 2 501 is carried to support and clamp the end of the cover body.

[0063] By setting the stud 503 to fix the positioning block 501, the height of the positioning block 501 can be adjusted in the vertical direction. The adjustment method is simple. Just loosen the nut fixing the angle iron 502 and lower the angle iron 502. The adjustment range is relatively large.

[0064] like Figure 9-11As shown, the suction cup 403 is connected to an external negative pressure machine, and the negative pressure adsorption area of ​​the suction cup 403 is located in the middle of the battery box cover and is adjustable.

[0065] The negative pressure area on the suction cup 403 can be adjusted in a small range to prevent empty suction from affecting the overall suction and fixing effect of the suction cup 403 on the battery box cover. The battery box cover is provided with electrode sheets at both ends, and the suction area is small, so the suction position is set on both sides of the middle part of the cover, avoiding the through groove in the middle, and symmetrically adsorbing the flat part to maintain the overall stability of the battery box cover and prevent it from deforming during the welding process.

[0066] like Figure 9-11 As shown, it includes a central negative pressure area 4031, an end negative pressure area 4032, a side edge negative pressure area 1 4033 and a side edge negative pressure area 2 4034 which are opened inside and connected, the side edge negative pressure area 2 4034 is connected to the central negative pressure area 4031 through the side edge negative pressure area 1 4033, the side edge negative pressure area 2 4034 and the side edge negative pressure area 1 4033 are connected or cut off by a knob valve 4035 arranged on their connecting passages, the end negative pressure area 4032 is arranged at both ends of the suction cup 403, and the side edge negative pressure area 1 4033 and the side edge negative pressure area 2 4034 are respectively arranged on both side edges of the suction cup 403;

[0067] Negative pressure holes are provided at the bottom of the suction cup 403 and are connected to the end negative pressure area 4032, the side edge negative pressure area 1 4033 and the side edge negative pressure area 2 4034 respectively.

[0068] The middle of the battery box cover is provided with a wire groove, so no negative pressure hole is provided there to avoid uneven pressure in the negative pressure cavity, which may lead to decreased or unstable adsorption capacity. Therefore, near the middle, only negative pressure areas are provided at both ends of the battery cover and negative pressure holes are provided to adsorb and fix the battery box cover. However, for both sides, since the battery cover has a high flatness on both sides and there are no holes such as through grooves that can impress pressure, this part can be effectively adsorbed by the suction cup 403. Therefore, for the cover, a shape is formed with its through groove as the center, and its surroundings are adsorbed and fixed. Prevent its deformation during the initial welding process.

[0069] Since the width of the battery box cover varies according to the model of the blade battery, it is particularly obvious in the width part. Therefore, we have made a targeted design for the distribution of the suction cups on both sides of the suction cup 403, dividing it into two cavities: the side edge negative pressure zone 1 4033 and the side edge negative pressure zone 2 4034. By turning the knob valve 4035 externally, it is allowed to penetrate deeply to cut off the passage between the side edge negative pressure zone 1 4033 and the side edge negative pressure zone 2 4034, which plays a partitioning role, so that there is no negative pressure in the side edge negative pressure zone 2 4034, and it will not affect the internal pressure of the side edge negative pressure zone 1 4033 and the end negative pressure zone 4032, ensuring stable adsorption force and maintaining the anti-deformation effect.

[0070] The working principle and use process of the present invention:

[0071] The driven positioning module 1 200 and the driven positioning module 2 300 are used to perform positioning operations on the bottom and top of the battery box, respectively. The driven positioning module 2 300 can be lifted or lowered vertically up and down with the lifting beam 104. The lifting beam 104 is extended by the lifting cylinder 105 so that it can be lifted, and the fixed platform 103 is installed on the threaded guide rod 102 through a nut, and can have an initial height. Provide an initial height platform, and then lift the lifting beam 104 to the height of the battery box body through the top support of the lifting cylinder 105, so that the driven positioning module 2 300 can position the battery box body and the cover body. The height of the lifting beam 104 can be adjusted, and it can be lifted and lowered for blade battery boxes of different specifications and models to adapt to their height. The anti-deformation adsorption component 400 can adsorb and fix the battery box cover to prevent the battery box cover from bending and deforming during the welding process. During welding, the symmetrical side of one side edge spanned by the rotating arm 402 is welded first, and then the two ends of the battery box cover are welded. After completion, the adsorption and fixation of the anti-deformation adsorption component 400 is removed and the last side is welded.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery box laser welding tool, characterized by: It comprises a tooling platform (100) which is arranged on a workbench and located on both sides of a main body of the battery box; The tooling platform (100) comprises a base (101) fixedly mounted on a workbench, a threaded guide rod (102) fixedly connected to both ends of the base (101), a lifting beam (104) movably sleeved on the threaded guide rod (102), and a fixed platform (103) fixedly sleeved on the threaded guide rod (102), a lifting cylinder (105) fixedly mounted on the bottom of the lifting beam (104), and the end of the piston rod of the lifting cylinder (105) is fixedly connected and supported on the fixed platform (103) to increase the overall height of the lifting beam (104); The welding tool also includes two sets of driven positioning modules (300) symmetrically arranged on the lifting beam (104), and an adjustable driven positioning module (200) arranged on the workbench for positioning the battery box; The second drive positioning module (300) is used to limit the two symmetrical sides of the battery box top cover, and two groups of third drive positioning modules (500) are symmetrically arranged on the lifting beam (104) to limit the other two sides of the battery box top cover.

2. A battery box laser welding tool according to claim 1, characterized in that: The driven positioning module 2 (300) includes a telescopic positioning rod (301) that can be clamped on both sides of the top cover and a linear guide slider (308) installed on the lifting beam (104). Both ends of the telescopic positioning rod (301) are installed on the linear guide slider (308) through a set of fixing parts 2 (302) and a cantilever (303). The cantilever (303) is movably sleeved in the linear guide slider (308). A propulsion cylinder 2 (309) is installed at the bottom of the lifting beam (104). A support shaft (311) is connected between the two sets of cantilevers (303). The telescopic end of the propulsion cylinder 2 (309) is connected to (3011) for controlling the advance and retreat of the telescopic positioning rod (301).

3. A battery box laser welding tool according to claim 2, characterized in that: One of the driven positioning modules (300) includes a pressure-sensitive element (304) threadedly connected to a cantilever (303), a spring (305) is elastically supported between the pressure-sensitive element (304) and the linear guide slider (308), a rear positioning rod (310) is provided at one end of the cantilever (303) that passes through the linear guide slider (308), and the two cantilevers (303) are connected to a rear positioning rod (310).

4. A battery box laser welding tool according to claim 3, characterized in that: One of the second drive positioning modules (300) is provided with an anti-deformation adsorption component (400) capable of adsorbing the top cover of the battery box to prevent the top cover of the battery box from deforming, and the anti-deformation adsorption component (400) comprises one or more telescopic cylinders (401) hingedly mounted on the rear positioning rod (310), a rotating arm (402) rotatably mounted on the support shaft (311), and a suction cup (403) fixedly mounted on the end of the rotating arm (402); The rotating arm (402) is hinged to the telescopic end of the telescopic cylinder (401) to control the turning of the rotating arm (402).

5. A battery box laser welding tool according to any one of claims 1 to 4, characterized in that: The driven positioning module (200) comprises a propulsion cylinder (201) arranged on a workbench, the telescopic end of the propulsion cylinder (201) is drivingly connected to a parallelogram linkage mechanism (202), the passive rod of the parallelogram linkage mechanism (202) is connected to a sliding base (204), and a positioning assembly (203) is installed on the sliding base (204); The positioning assembly (203) is used to support the battery box body when the parallelogram linkage mechanism (202) is extended; Both ends of the sliding base (204) are slidably mounted on a second slide rail (205) arranged on the workbench.

6. A battery box laser welding tool according to claim 5, characterized in that: The positioning assembly (203) comprises a support block (2031) slidably mounted on a sliding base (204), a positioning block 1 (2032) being fixedly mounted on the support block (2031), and fixing members (2033) are provided on both sides of the support block (2031); The sliding base (204) is provided with a through slot along a straight line direction, and the fixing member (2033) is penetrated by bolts and fixed on the through slot, thereby fixing the support block (2031) on the sliding base (204).

7. A battery box laser welding tool according to claim 6, characterized in that: The other two sides of the battery box body are supported and positioned by a driven positioning module four (600), and the driven positioning module four (600) includes a telescopic cylinder and a supporting assembly driven by the telescopic cylinder.

8. The battery box laser welding tool according to claim 1, characterized in that: The driven positioning module three (500) includes a propulsion cylinder three (505) installed on the lifting beam (104), the output end of the propulsion cylinder three (505) is fixedly connected to a support arm (504), the end of the support arm (504) is fixedly installed with a stud (503) through a nut, the top of the stud (503) is fixedly installed with a positioning block two (501) through an angle iron (502), and the positioning block two (501) is supported at both ends of the battery box top cover.

9. The battery box laser welding tool according to claim 4, characterized in that: The suction cup (403) is connected to an external negative pressure machine, and the negative pressure adsorption area of ​​the suction cup (403) is located in the middle of the battery box cover and is adjustable.

10. A battery box laser welding tool according to claim 9, characterized in that: The suction cup (403) comprises a central negative pressure zone (4031), an end negative pressure zone (4032), a side edge negative pressure zone 1 (4033) and a side edge negative pressure zone 2 (4034) which are opened and connected therein; the side edge negative pressure zone 2 (4034) is connected to the central negative pressure zone (4031) through the side edge negative pressure zone 1 (4033); the side edge negative pressure zone 2 (4034) and the side edge negative pressure zone 1 (4033) are connected or cut off by a knob valve (4035) arranged on their connecting passage; the end negative pressure zone (4032) is arranged at both ends of the suction cup (403) and the side edge negative pressure zone 1 (4033) and the side edge negative pressure zone 2 (4034) are respectively arranged at the two side edges of the suction cup (403); The bottom of the suction cup (403) is provided with negative pressure holes which are respectively connected with the end negative pressure area (4032), the side edge negative pressure area 1 (4033) and the side edge negative pressure area 2 (4034).

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