A new energy vehicle battery laser welding tool

Abstract

The application belongs to the technical field of laser welding, and particularly relates to a tool for laser welding of new energy automobile batteries, which comprises a base, a controller fixedly connected to the side wall of the base, a mounting frame fixedly connected to the rear side wall of the base, the mounting frame being in an inverted U-shaped structure, an upper side wall of the mounting frame being fixedly connected with a lifting electric push rod, the moving end of the lifting electric push rod penetrating through the upper side wall of the mounting frame and being fixedly connected with a lifting plate, and the lower side wall of the lifting plate being fixedly connected with a screw linear module. Before the copper bar is welded by using laser, the copper bar surface can be automatically cleaned of oxidation film, oil stains, plating and other substances, thereby ensuring the welding quality of the copper bar, reducing the problem of a large number of splashes caused by foreign matters, and cleaning a small amount of splashes attached to the copper bar surface, thereby avoiding the problem of splashes damaging the flatness of the copper bar and causing a great safety hazard.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser welding, and particularly relates to a tool for laser welding of a new energy automobile battery. BACKGROUND

[0002] The copper bar can conductively connect between new energy automobile battery modules or battery monomers, realize series connection and parallel connection of the battery, form a high-voltage loop, and ensure effective transmission of current. It is an internal connecting component of the battery pack. In the field of new energy automobile batteries, in order to realize the busbar connection in the power battery module, a plurality of copper bars need to be welded together, and the copper bars are welded by using a laser welding process. Deep penetration welding of the copper bar material can be realized to form a uniform and firm weld, thereby ensuring the structural reliability during large current conduction. When the copper bar is welded, a welding tool needs to be used for clamping. For example, a new energy automobile copper bar welding tool is disclosed in patent publication No. CN222114046U.

[0003] During the welding of the copper bar, if the surface is not cleaned, the oxidation film, oil stains, moisture or plating layer and other substances on the surface will rapidly decompose or vaporize under the action of laser, a large amount of gas will escape, and then drive the splashing to be violent. After the splashing hits the surface of the copper bar, it will quickly solidify to form irregular protrusions, which will damage the flatness of the copper bar surface and cause adverse effects on subsequent assembly. More seriously, the sharp protrusions formed by the splashing may cause air breakdown discharge in a high-voltage environment, causing arc ablation of the copper bar surface, and even may cause short circuit, which has a great safety hazard.

[0004] Therefore, a tool for laser welding of a new energy automobile battery is proposed to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a tool for laser welding of a new energy automobile battery to solve the above problems.

[0006] To achieve the above purpose, the following technical scheme is adopted: a tool for laser welding of a new energy automobile battery, comprising a base, a controller fixedly connected to the side wall of the base, an installation frame fixedly connected to the rear side wall of the base, the installation frame being in an inverted U-shaped structure, an electric lifting push rod fixedly connected to the upper side wall of the installation frame, the moving end of the electric lifting push rod penetrating through the upper side wall of the installation frame and being fixedly connected to a lifting plate, a lead screw linear module fixedly connected to the lower side wall of the lifting plate, the moving end of the lead screw linear module being fixedly connected to a moving frame, the moving frame being in an inverted L-shaped structure, and the lower side wall of the moving frame being fixedly connected to a laser welding head, further comprising:

[0007] A cleaning assembly is connected to the upper side wall of the moving frame for cleaning impurities on the surface of the copper bar and splashes attached to the surface of the copper bar.

[0008] The purification assembly is arranged on the upper side wall of the lifting plate and used for purifying harmful gas generated in the copper bar welding process.

[0009] The support assembly is arranged on the upper side wall of the base and used for fixing the two copper bars, thereby ensuring the stability of the two copper bars during welding.

[0010] Preferably, the cleaning assembly comprises a dust suction box fixedly connected to the upper side wall of the moving frame, a dust suction pump fixedly connected to the front side wall of the dust suction box, an air inlet end of the dust suction pump in fixed communication with the dust suction box, a filter element arranged in the air inlet end of the dust suction pump, a dust suction pipe fixedly and communicatively connected to the rear side wall of the dust suction box, a lower end of the dust suction pipe penetrating through the moving frame and fixedly and communicatively connected to a scraper, the scraper being a hollow structure, the lower end of the scraper being a tapered structure, a plurality of dust suction ports being arranged on the side wall of the scraper and distributed on both sides of the tapered structure, a cleaning electric push rod fixedly connected to the upper side wall of the moving frame, a moving end of the cleaning electric push rod penetrating through the moving frame and fixedly connected to a polishing frame, a polishing motor fixedly connected to the right side wall of the polishing frame, an output end of the polishing motor penetrating through the polishing frame and fixedly connected to a polishing cotton shaft.

[0011] Preferably, the purification assembly comprises a purification box fixedly connected to the upper side wall of the lifting plate, an activated carbon purification mechanism arranged in the purification box, a suction pump fixedly connected to the front side wall of the purification box, an air inlet end of the suction pump in communication with the purification box, a horizontal pipe fixedly and communicatively connected to the side wall of the purification box, two vertical pipes fixedly and communicatively connected to the lower side wall of the horizontal pipe, two pressing blocks fixedly connected to the lower side wall of the lifting plate, the pressing blocks being hollow structures, an air inlet arranged on the side wall of each of the pressing blocks opposite to the other, and lower ends of the two vertical pipes penetrating through the lifting plate and respectively in communication with the two pressing blocks.

[0012] Preferably, the support assembly includes two support blocks fixedly connected to the upper side walls of the base, the upper side walls of the two support blocks are fixedly connected with the same support plate, the inside of the support plate is provided with two negative pressure cavities, the front side walls of the two negative pressure cavities are fixedly and communicatively connected with two connecting pipes, the two connecting pipes are both provided with a first control valve, the front ends of the two connecting pipes both extend out of the negative pressure cavities and are fixedly and communicatively connected with the same negative pressure pipe, the front side wall of the support block located at the front side is fixedly connected with a negative pressure pump, the air inlet end of the negative pressure pump is in communication with the negative pressure pipe, the upper side wall of the support plate is provided with a plurality of grooves above the negative pressure cavities, the lower side inner wall of the groove is fixedly connected with a suction cylinder through a spring, the upper side wall of the suction cylinder is fixedly connected with a rubber ring, the lower side wall of the suction cylinder is provided with a through hole, a vertical hole is arranged between the groove and the negative pressure cavity, and an adjusting valve is arranged in the vertical hole, the upper side inner wall of the negative pressure cavity is rotatably connected with a sealing plate located outside the vertical hole, the sealing plate and the negative pressure cavity are connected through a spring, the upper side inner wall of the negative pressure cavity is fixedly connected with a plurality of trigger switches, the plurality of trigger switches are electrically connected with a controller, and the lower side wall of the sealing plate is fixedly connected with an arc-shaped pressing rod.

[0013] Preferably, the lower side wall of the suction cylinder is fixedly connected with a conductive block, the conductive block is electrically connected with an external power supply through a conductive sliding plate assembly, the lower side wall of the groove is fixedly connected with a conductive plate, and the conductive plate is electrically connected with the controller.

[0014] Preferably, the upper side wall of the base is fixedly connected with two wires, the upper ends of the two wires are both fixedly connected with alligator clamps, the wires and the alligator clamps are electrically connected, the wire located at the right side is electrically connected with an external power supply, the wire located at the left side is electrically connected with an external ammeter, and the lower side wall of the moving frame is fixedly connected with an infrared probe.

[0015] Preferably, the inside of the support plate is provided with an air cooling cavity located between the two negative pressure cavities, the negative pressure pipe and the air cooling cavity are fixedly and communicatively connected with the same air cooling pipe, the air cooling pipe is provided with a second control valve, and the rear side wall of the air cooling cavity is provided with an air inlet.

[0016] Preferably, the rear side wall of the support plate is fixedly connected with a dustproof net located outside the air inlet, and the dustproof net is made of aluminum alloy.

[0017] Compared with the prior art, the new energy automobile battery laser welding tool has the advantages that:

[0018] 1、 Through the setting of the cleaning assembly, before the copper bar is welded by using the laser, the copper bar surface can be automatically cleaned of oxidation film, oil stains, plating and other substances, thereby ensuring the copper bar welding quality, reducing the problem of a large number of splashes caused by foreign matters, and also cleaning a small amount of splashes attached to the copper bar surface, thereby avoiding the problem of splashes damaging the flatness of the copper bar and having a large safety hazard.

[0019] 2、 Through the setting of the purification assembly, while the copper bar is welded by using the laser, the harmful gas can be automatically purified, thereby avoiding the problem of harmful gas escaping to the surrounding environment and affecting the health of the operator.

[0020] 3、 Through the setting of the support assembly, before the copper bar is welded, the position of the copper bar can be fixed, so that the weld of the copper bar is in the set position, and the width of the weld can be detected, thereby improving the efficiency of subsequent laser welding.

[0021] 4、 Through the setting of the wire, crocodile clamp and infrared probe, after the welding of the two copper bars is completed, the conductivity of the copper bar can be detected, when the conductivity of the welded copper bar is detected to be reduced, the temperature abnormal area of the weld can be detected, so that the operator can find the area with pores and other problems in the weld in time and repair it. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structure schematic view of a tool provided by the application for laser welding of a new energy automobile battery;

[0023] Figure 2 is a structure schematic view of a cleaning assembly in a tool provided by the application for laser welding of a new energy automobile battery;

[0024] Figure 3 is a structure schematic view of a purification assembly in a tool provided by the application for laser welding of a new energy automobile battery;

[0025] Figure 4 is a position relationship schematic view of a pressing block and an air inlet in a tool provided by the application for laser welding of a new energy automobile battery;

[0026] Figure 5 is a top view sectional view of a support plate in a tool provided by the application for laser welding of a new energy automobile battery;

[0027] Figure 6 is a right view sectional view of a support plate in a tool provided by the application for laser welding of a new energy automobile battery.

[0028] In the figure: 1 base, 2 controller, 3 mounting frame, 4 lifting electric push rod, 5 lifting plate, 6 screw linear module, 7 moving frame, 8 laser welding head, 9 cleaning assembly, 91 dust suction box, 92 dust suction pump, 10 dust suction pipe, 11 scraper, 12 dust suction port, 13 cleaning electric push rod, 14 polishing frame, 15 polishing motor, 16 polishing cotton shaft, 17 purification assembly, 171 purification box, 172 air suction pump, 18 horizontal pipe, 19 vertical pipe, 20 pressing block, 21 air inlet, 22 supporting assembly, 221 supporting block, 222 supporting plate, 23 negative pressure cavity, 24 connecting pipe, 25 first control valve, 26 negative pressure pipe, 27 negative pressure pump, 28 groove, 29 adsorption cylinder, 30 rubber ring, 31 through hole, 32 vertical hole, 33 regulating valve, 34 sealing plate, 35 trigger switch, 36 arc-shaped pressing rod, 37 conductive block, 38 conductive plate, 39 wire, 40 crocodile clip, 41 infrared probe, 42 air cooling cavity, 43 air cooling pipe, 44 second control valve, 45 air inlet, 46 dustproof net. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0030] As shown in Figures 1-6 A new energy automobile battery laser welding tool includes a base 1, the side wall of the base 1 is fixedly connected with a controller 2, the rear side wall of the base 1 is fixedly connected with a mounting frame 3, the mounting frame 3 is a reverse U-shaped structure, the upper side wall of the mounting frame 3 is fixedly connected with a lifting electric push rod 4, the moving end of the lifting electric push rod 4 penetrates through the upper side wall of the mounting frame 3 and is fixedly connected with a lifting plate 5, the lower side wall of the lifting plate 5 is fixedly connected with a screw linear module 6, the moving end of the screw linear module 6 is fixedly connected with a moving frame 7, the moving frame 7 is a reverse L-shaped structure, the lower side wall of the moving frame 7 is fixedly connected with a laser welding head 8, and the tool further includes:

[0031] A cleaning assembly 9 is connected to the upper side wall of the moving frame 7 and is used for cleaning impurities on the surface of the copper bar and splashes adhered to the surface of the copper bar;

[0032] A purification assembly 17 is arranged on the upper side wall of the lifting plate 5 and is used for purifying harmful gases generated in the copper bar welding process;

[0033] A supporting assembly 22 is arranged on the upper side wall of the base 1 and is used for fixing the two copper bars, so that the stability of the two copper bars during welding is ensured.

[0034] The cleaning assembly 9 comprises a dust suction box 91 fixedly connected to the side wall of the moving frame 7, the front side wall of the dust suction box 91 is fixedly connected with a dust suction pump 92, the air inlet end of the dust suction pump 92 is fixedly communicated with the dust suction box 91, the inside of the dust suction box 91 is provided with a filter element located at the air inlet end of the dust suction pump 92, the rear side wall of the dust suction box 91 is fixedly communicated with a dust suction pipe 10, the lower end of the dust suction pipe 10 penetrates through the moving frame 7 and is fixedly communicated with a scraper 11, the scraper 11 is a hollow structure, the lower end of the scraper 11 is a tapered structure, a plurality of dust suction ports 12 are arranged on the side wall of the scraper 11 and are uniformly distributed on both sides of the tapered structure, the upper side wall of the moving frame 7 is fixedly connected with a cleaning electric push rod 13, the moving end of the cleaning electric push rod 13 penetrates through the moving frame 7 and is fixedly connected with a polishing frame 14, the right side wall of the polishing frame 14 is fixedly connected with a polishing motor 15, the output end of the polishing motor 15 penetrates through the polishing frame 14 and is fixedly connected with a polishing cotton shaft 16, so that the copper bar welding seam can be polished.

[0035] The purification assembly 17 comprises a purification box 171 fixedly connected to the side wall of the lifting plate 5, the purification box 171 is provided with an activated carbon purification mechanism, the front side wall of the purification box 171 is fixedly connected with an air suction pump 172, the air inlet end of the air suction pump 172 is communicated with the purification box 171, the side wall of the purification box 171 is fixedly communicated with a horizontal pipe 18, the lower side wall of the horizontal pipe 18 is fixedly communicated with two vertical pipes 19, the lower side wall of the lifting plate 5 is fixedly connected with two pressing blocks 20, the pressing blocks 20 are hollow structures, the side wall of the opposite side of the two pressing blocks 20 is provided with an air inlet 21, the lower ends of the two vertical pipes 19 penetrate through the lifting plate 5 and are respectively communicated with the two pressing blocks 20, so that the harmful gas generated in the welding process can be treated.

[0036] The support assembly 22 comprises two support blocks 221 fixedly connected to the side walls of the base 1, the upper side walls of the two support blocks 221 are fixedly connected with the same support plate 222, the inside of the support plate 222 is provided with two negative pressure cavities 23, the front side walls of the two negative pressure cavities 23 are fixedly and communicatively provided with the same connecting pipe 24, the two connecting pipes 24 are both provided with the first control valve 25, the front ends of the two connecting pipes 24 are both extended out of the negative pressure cavities 23 and fixedly and communicatively provided with the same negative pressure pipe 26, the front side wall of the front side support block 221 is fixedly connected with the negative pressure pump 27, the air inlet end of the negative pressure pump 27 is communicated with the negative pressure pipe 26, the upper side wall of the support plate 222 is provided with a plurality of recesses 28 located above the negative pressure cavities 23, the lower side inner walls of the recesses 28 are fixedly connected with the adsorption barrels 29 through springs, the lower side walls of the adsorption barrels 29 are fixedly connected with the conductive blocks 37, the conductive blocks 37 are electrically connected with the external power supply through the conductive sliding plate assembly, the lower side walls of the recesses 28 are fixedly connected with the conductive plates 38, the conductive plates 38 are electrically connected with the controller 2, the upper side walls of the adsorption barrels 29 are fixedly connected with the rubber rings 30, the lower side walls of the adsorption barrels 29 are provided with the through holes 31, the recesses 28 and the negative pressure cavities 23 are provided with the same vertical hole 32 and are provided with the adjusting valve 33 in the vertical hole 32, the upper side inner walls of the negative pressure cavities 23 are rotatably connected with the sealing plates 34 located outside the vertical hole 32, the sealing plates 34 are connected with the negative pressure cavities 23 through springs, the upper side inner walls of the negative pressure cavities 23 are fixedly connected with the plurality of trigger switches 35, the plurality of trigger switches 35 are electrically connected with the controller 2, and the lower side walls of the sealing plates 34 are fixedly connected with the arc-shaped pressing rods 36, so that the copper bars can be adsorbed and fixed.

[0037] The upper side wall of the base 1 is fixedly connected with the two wires 39, the upper ends of the two wires 39 are fixedly connected with the alligator clips 40, the wires 39 and the alligator clips 40 are electrically connected, the wire 39 located on the right side is electrically connected with the external power supply, and the wire 39 located on the left side is electrically connected with the external ammeter, the lower side wall of the moving frame 7 is fixedly connected with the infrared probe 41, after the welding of the two copper bars is completed, the conductivity of the copper bars can be detected, when the conductivity of the welded copper bars is detected to be reduced, the temperature abnormal area of the weld can be detected, so that the operator can find the area where pores exist in the weld in time and repair it.

[0038] The inside of the support plate 222 is provided with the air cooling cavity 42 located between the two negative pressure cavities 23, the negative pressure pipe 26 and the air cooling cavity 42 are fixedly and communicatively provided with the same air cooling pipe 43, the air cooling pipe 43 is provided with the second control valve 44, the rear side wall of the air cooling cavity 42 is provided with the air inlet 45, and the rear side wall of the support plate 222 is fixedly connected with the dust screen 46 located outside the air inlet 45, the dust screen 46 is made of aluminum alloy, and the temperature of the support plate 222 can be reduced.

[0039] The operating principle of this invention is explained as follows: Two copper busbars to be welded are placed on the surface of the support plate 222, such that the weld seam of the copper busbars is located on the guide line (guide line) on the surface of the support plate 222. Figure 1 (As shown in the diagram), then another operator sends an electrical signal to controller 2 via an external switch. Upon receiving the signal, controller 2 controls the negative pressure pump 27 to operate and simultaneously opens the two first control valves 25 and multiple regulating valves 33. The negative pressure pump 27 extracts the gas from the negative pressure chamber 23 through the negative pressure pipe 26 and connecting pipe 24, putting the negative pressure chamber 23 into a negative pressure state. The gas inside the groove 28 and adsorption cylinder 29 is extracted through the through hole 31 and vertical hole 32. When the copper busbar is in adsorption... After the adsorption cylinder 29 is completely covered by the top of the cylinder 29, under the action of negative pressure, the adsorption cylinder 29 will adsorb the copper busbar, preventing external gas from entering the negative pressure chamber 23 through the through hole 31 and the vertical hole 32. The adsorption cylinder 29 will also cause the copper busbar to move downwards, making it contact the upper side wall of the support plate 222. However, for the adsorption cylinder 29 not completely covered by the copper busbar, external gas will continuously enter the negative pressure chamber 23 through the through hole 31 and the vertical hole 32. After passing through the vertical hole 32, the gas will blow downwards onto the sealing plate 34 (see reference). Figure 6 (Since the sealing plate 34 does not completely cover the vertical hole 32, gas can subsequently re-enter the groove 28 through the vertical hole 32). The sealing plate 34 will drive the arc-shaped pressure rod 36 to rotate along the hinge. The arc-shaped pressure rod 36 will press against the trigger switch 35. After the negative pressure pump 27 has been working for five seconds, the controller 2 will detect that a trigger switch 35 is still being pressed by the arc-shaped pressure rod 36. The controller 2 will then control the corresponding regulating valve 33 to close, thereby keeping the negative pressure chamber 23 in a sealed state. The controller 2 will check the negative pressure value inside the negative pressure chamber 23 through the air pressure sensor (not shown in the figure) inside the negative pressure chamber 23 to see if it has reached the set value. After a certain threshold (0.5 standard atmospheres) is reached, the controller 2 will control the two first control valves 25 to close, fix the copper busbar, and control the second control valve 44 to open, so that the airflow is extracted through the air-cooling chamber 42. The air cooling can reduce the heat conducted by the support plate 222 during subsequent welding. After the copper busbar welding is completed, the operator controls all the regulating valves 33 to open through the external control switch. The external gas will enter the negative pressure chamber 23 through the through hole 31 on the lower side of the idle adsorption cylinder 29 and the vertical hole 32 below, releasing the negative pressure state of the negative pressure chamber 23, making it convenient for the operator to take out the welded copper busbar.

[0040] When the copper bar fixing is finished, the operator sends an electrical signal to the controller 2 through an external switch, and after receiving the electrical signal, the controller 2 controls the lifting electric push rod 4 to work. The lifting electric push rod 4 drives the lifting plate 5 to move downward through the pressure sensor (not shown in the figure), and the lifting plate 5 drives the pressing block 20 to move downward and extrudes the copper bar, further fixing the copper bar. After the controller 2 detects that the data transmitted by the pressure sensor (the pressure sensor is arranged between the lifting electric push rod 4 and the lifting plate 5, and the pressure fluctuation exceeds 10N) becomes larger, the controller 2 controls the lifting electric push rod 4 to stop working, and controls the lead screw linear module 6, the cleaning electric push rod 13 and the polishing motor 15 to work. The cleaning electric push rod 13 drives the polishing cotton shaft 16 to move downward to the set position and contact the surface of the copper bar. The polishing motor 15 drives the polishing cotton shaft 16 to rotate, and then the lead screw linear module 6 drives the polishing cotton shaft 16 to move on the surface of the copper bar to polish the surface of the copper bar. During the process of fixing the copper bar, the adsorption cylinder 29 drives the conductive block 37 and the conductive plate 38 to contact. The controller 2 can judge the length of the weld by detecting the range of the conductive plate 38 (the controller 2 can judge the width of the copper bar and the placed position by detecting the position of the leftmost conductive plate 38 and the position of the rightmost conductive plate 38), and controls the moving distance of the lead screw linear module 6. During the process of polishing the copper bar by the polishing cotton shaft 16, the controller 2 also controls the dust suction pump 92 to work. The dust suction pump 92 sucks the gas in the dust suction box 91, and the external gas carries the polishing dust into the dust suction box 91 for storage. When the polishing of the copper bar is finished, the controller 2 controls the cleaning electric push rod 13 to drive the polishing cotton shaft 16 to move upward to the initial position, controls the lead screw linear module 6 to work in reverse, and controls the laser welding head 8 to work. The lead screw linear module 6 drives the laser welding head 8 to move and weld the weld of the copper bar. A small amount of spatter generated during the welding process is scraped off by the scraper 11 and enters the dust suction box 91 for storage through the dust suction port 12.

[0041] During the welding process, the controller 2 also controls the air suction pump 172 to work. The air suction pump 172 sucks the gas in the purification box 171, and the external gas carries the harmful gas generated during the welding process into the purification box 171 through the air inlet 21, the pressing block 20, the vertical pipe 19 and the horizontal pipe 18, and the harmful gas is filtered and treated by the activated carbon purification mechanism in the purification box 171.

[0042] When the copper bar welding is finished, the operator clamps two alligators 40 on both sides of the welded copper bar respectively, and then the controller 2 controls the right wire 39 and the external power supply to be connected, so that the external current is delivered to the external ammeter through the copper bar. When the controller 2 detects that the resistance of the copper bar becomes larger through the external ammeter (the continuity of the conductive path and the effective cross-sectional area are damaged by the pores existing in the weld, so that the effective cross-sectional area through which the current passes is reduced, the resistance becomes larger, more Joule heat is generated when the current passes, and the current delivered to the ammeter becomes smaller), the controller 2 controls the lead screw linear module 6 and the infrared probe 41 to work, detects the abnormal temperature area of the weld by using the infrared probe 41, and sends the detection result to the external display screen through the wireless communication module in the controller 2, so as to facilitate the subsequent operator to repair the weld.

[0043] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A new energy automobile battery laser welding tool, comprising a base (1), the side wall of the base (1) is fixedly connected with a controller (2), the rear side wall of the base (1) is fixedly connected with a mounting bracket (3), the mounting bracket (3) is inverted U-shaped structure, the upper side wall of the mounting bracket (3) is fixedly connected with a lifting electric push rod (4), the moving end of the lifting electric push rod (4) penetrates through the upper side wall of the mounting bracket (3) and is fixedly connected with a lifting plate (5), the lower side wall of the lifting plate (5) is fixedly connected with a lead screw linear module (6), the moving end of the lead screw linear module (6) is fixedly connected with a moving frame (7), the moving frame (7) is inverted L-shaped structure, the lower side wall of the moving frame (7) is fixedly connected with a laser welding head (8), characterized in that, Also includes: Cleaning assembly (9), connected in the upper side wall of the moving frame (7), for cleaning the impurities on the surface of the copper bar, and the splash attached to the surface of the copper bar; Purification assembly (17), provided on the upper side wall of the lifting plate (5), for purifying the harmful gas generated in the copper bar welding process; Support assembly (22), provided on the upper side wall of the base (1), for fixing two copper bars, to ensure the stability of the two copper bars during welding, the support assembly (22) comprises two support blocks (221) fixedly connected to the upper side wall of the base (1), the upper side wall of each of the two support blocks (221) is fixedly connected with a same support plate (222), the inside of the support plate (222) is provided with two negative pressure cavities (23), the front side wall of each of the two negative pressure cavities (23) is fixedly and communicatively connected with a connecting pipe (24), the first control valve (25) is arranged in each of the two connecting pipes (24), the front end of each of the two connecting pipes (24) extends out of the negative pressure cavity (23) and is fixedly and communicatively connected with a same negative pressure pipe (26), the front side wall of the support block (221) located at the front side is fixedly connected with a negative pressure pump (27), the air inlet end of the negative pressure pump (27) is in communication with the negative pressure pipe (26), a plurality of recesses (28) above the negative pressure cavities (23) are formed in the upper side wall of the support plate (222), the lower side inner wall of each of the recesses (28) is fixedly connected with a suction cylinder (29) through a spring, the upper side wall of the suction cylinder (29) is fixedly connected with a rubber ring (30), a through hole (31) is formed in the lower side wall of the suction cylinder (29), a same vertical hole (32) is formed between the recess (28) and the negative pressure cavity (23) and is provided with an adjusting valve (33), the upper side inner wall of the negative pressure cavity (23) is rotatably connected with a sealing plate (34) located outside the vertical hole (32), the sealing plate (34) and the negative pressure cavity (23) are connected through a spring, a plurality of trigger switches (35) are fixedly connected to the upper side inner wall of the negative pressure cavity (23), and the trigger switches (35) are electrically connected with the controller (2), the lower side wall of the sealing plate (34) is fixedly connected with an arc-shaped pressing rod (36); The inside of the support plate (222) is provided with a wind cooling cavity (42) between the two negative pressure cavities (23), the negative pressure pipe (26) and the wind cooling cavity (42) are fixedly and communicatively connected with a same wind cooling pipe (43), the second control valve (44) is arranged in the wind cooling pipe (43), and an air inlet (45) is formed in the rear side wall of the wind cooling cavity (42).

2. The tooling for laser welding of a new energy vehicle battery according to claim 1, characterized in that, The cleaning assembly (9) comprises a dust suction box (91) fixedly connected to the upper side wall of the moving frame (7), a dust suction pump (92) fixedly connected to the front side wall of the dust suction box (91), the air inlet end of the dust suction pump (92) in fixed communication with the dust suction box (91), a filter element provided in the dust suction box (91) at the air inlet end of the dust suction pump (92), a dust suction pipe (10) fixedly communicated with the rear side wall of the dust suction box (91), the lower end of the dust suction pipe (10) penetrating through the moving frame (7) and fixedly communicated with a scraper (11), the scraper (11) being a hollow structure, the lower end of the scraper (11) being a tapered structure, a plurality of dust suction ports (12) being formed in the side wall of the scraper (11) and uniformly distributed on the two sides of the tapered structure, a cleaning electric push rod (13) fixedly connected to the upper side wall of the moving frame (7), the moving end of the cleaning electric push rod (13) penetrating through the moving frame (7) and fixedly connected with a polishing frame (14), a polishing motor (15) fixedly connected to the right side wall of the polishing frame (14), the output end of the polishing motor (15) penetrating through the polishing frame (14) and fixedly connected with a polishing cotton shaft (16).

3. The tooling for laser welding of a battery for a new energy vehicle according to claim 1, characterized in that, The purification assembly (17) comprises a purification box (171) fixedly connected to the upper side wall of the lifting plate (5), an activated carbon purification mechanism provided in the purification box (171), an air suction pump (172) fixedly connected to the front side wall of the purification box (171), the air inlet end of the air suction pump (172) in communication with the purification box (171), a horizontal pipe (18) fixedly communicated with the side wall of the purification box (171), two vertical pipes (19) fixedly communicated with the lower side pipe wall of the horizontal pipe (18), two pressing blocks (20) fixedly connected to the lower side wall of the lifting plate (5), the pressing blocks (20) being hollow structures, an air inlet (21) formed in the side wall of each of the two pressing blocks (20) on the opposite side, the lower ends of the two vertical pipes (19) penetrating through the lifting plate (5) and respectively communicated with the two pressing blocks (20).

4. The tooling for laser welding of a new energy vehicle battery according to claim 1, characterized in that, The lower side wall of the adsorption cylinder (29) is fixedly connected with an electrically conductive block (37), the electrically conductive block (37) is electrically connected with an external power supply through an electrically conductive sliding plate assembly, the lower side wall of the groove (28) is fixedly connected with an electrically conductive plate (38), and the electrically conductive plate (38) is electrically connected with the controller (2).

5. The tooling for laser welding of a battery for a new energy vehicle according to claim 1, characterized in that, The upper side wall of the base (1) is fixedly connected with two wires (39), the upper ends of the two wires (39) are fixedly connected with alligator clamps (40), the wires (39) and the alligator clamps (40) are electrically connected, the wire (39) on the right side is electrically connected with an external power supply, and the wire (39) on the left side is electrically connected with an external ammeter, and the lower side wall of the moving frame (7) is fixedly connected with an infrared probe (41).

6. The tooling for laser welding of a battery for a new energy vehicle according to claim 1, characterized in that, The rear side wall of the support plate (222) is fixedly connected with a dustproof net (46) outside the air inlet (45), and the dustproof net (46) is made of aluminum alloy.

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