CN115533278A - Battery tray arc welding deformation control device and use method thereof - Google Patents

Abstract

The invention relates to a battery tray arc welding deformation control device which comprises a placing frame and a bearing frame, wherein the bearing frame is connected with the placing frame through a bearing rod, the bearing frame is arranged opposite to the placing frame, first limiting parts which are arranged in one-to-one correspondence with a plurality of reinforcing beams are arranged on the bearing frame, a plurality of placing plates are connected onto the placing frame in a sliding mode, a plurality of positioning cylinders are arranged on the placing frame and are uniformly distributed on the placing frame, and a plurality of first abutting assemblies for abutting against side frames of aluminum alloy are arranged on the bearing frame. This application has the effect that can improve the quality of the battery tray that the welding was accomplished.

Description

Battery tray arc welding deformation control device and use method thereof

Technical Field

The invention relates to the technical field of battery tray welding, in particular to a battery tray arc welding deformation control device and a using method thereof.

Background

New energy industry development demand energy storage battery, the battery tray is energy storage battery's core part, the battery tray is formed by polylith aluminum alloy welding usually, when welding the battery package, place the aluminum alloy bottom plate on the rack usually, splice aluminum alloy side frame and aluminum alloy bottom plate again, put into a plurality of stiffening beams on the aluminum alloy bottom plate, the stiffening beam is the aluminum alloy material also, the concatenation department of rethread arc welder to aluminum alloy bottom plate and aluminum alloy side frame, the concatenation department of aluminum alloy bottom plate and stiffening beam welds.

When welding the aluminum alloy side frame in the battery tray length direction, the operator can also place the aluminum alloy side frame on the rack usually, with aluminum alloy side frame and aluminum alloy bottom plate concatenation, then weld, among the welding process, because welding temperature is high for the work piece can be out of shape after being heated, can produce the clearance because of warping between aluminum alloy bottom plate and the aluminum alloy side frame, thereby makes the battery tray quality reduction of final welding completion.

Disclosure of Invention

In order to improve the quality of a welded battery tray, the application provides a battery tray arc welding deformation control device.

In a first aspect, the present application provides a battery tray arc welding deformation control device, which adopts the following technical scheme:

the utility model provides a battery tray arc-welding deformation control device, includes rack and bearing frame, the bearing frame with the rack passes through the bearing bar and connects, the bearing frame with the rack sets up relatively, be equipped with the first locating part that sets up with a plurality of stiffening beam one-to-one on the bearing frame, sliding connection has a plurality of boards of placing on the rack, be provided with a plurality of location cylinders on the rack, be provided with a plurality of tight subassemblies of first supporting that are used for supporting tight aluminum alloy side frame on the bearing frame.

Through adopting above-mentioned technical scheme, during the use, the operator places the aluminum alloy bottom plate on a plurality of boards of placing, a plurality of boards of placing support the aluminum alloy bottom plate jointly, then remove the aluminum alloy bottom plate between bearing frame and the rack, later place the stiffening beam on the aluminum alloy bottom plate, then start a plurality of location cylinders simultaneously, a plurality of location cylinders move together towards the direction of first locating part, it is spacing to the stiffening beam until first locating part, aluminum alloy bottom plate and stiffening beam are all spacing this moment, then aluminum alloy side frame and aluminum alloy bottom plate's both sides concatenation, the tight subassembly of rethread first support is supported both tightly, then weld the concatenation department of aluminum alloy bottom plate and aluminum alloy side frame, weld the contact point of aluminum alloy bottom plate and stiffening beam, because aluminum alloy bottom plate, aluminum alloy side frame and stiffening beam are all spacing, consequently, deformation after being heated can not make their displacement, consequently, can improve the quality of welded battery tray.

Optionally, a slide is arranged on the placing plate, the slide includes a plurality of rollers arranged along the length direction of the placing plate, the slide is arranged along the width direction of the placing frame, a plurality of pushing cylinders arranged in one-to-one correspondence with the placing plates are arranged on the placing frame, and piston rods of the pushing cylinders are connected with the placing plate.

Through adopting above-mentioned technical scheme, during the use, the operator places aluminum alloy bottom plate on the slide, promotes aluminum alloy bottom plate and makes it and roller sliding fit, has reduced frictional force, has saved the manpower, then starts push cylinder, and push cylinder drives and places board and slide and move towards first locating part together, realizes preliminary spacing to aluminum alloy bottom plate.

Optionally, the first limiting part includes a limiting frame and two clamping claws, the limiting frame is disposed on the bearing frame, the two clamping claws are disposed at two ends of the limiting frame, clamping grooves are formed in the clamping claws, and the clamping grooves are abutted to corresponding stiffening beams.

Through adopting above-mentioned technical scheme, when the stiffening beam inserted the joint inslot, the jack catch had realized spacingly to the stiffening beam, had reduced the stiffening beam and has taken place gliding possibility, meanwhile, promote the cylinder through the cooperation with the joint claw, with the aluminum alloy bottom plate tentatively support tightly on the bearing frame, realize spacingly.

Optionally, the first tight subassembly of supporting includes spacing cylinder, slide rail, mounting panel, pulling plate, first catch plate and second catch plate, the mounting panel sets up on the bearing frame, spacing cylinder sets up on the mounting panel, the piston rod of spacing cylinder runs through the mounting panel and connects the pulling plate, first catch plate with the equal coaxial rotation of second catch plate is connected on the pulling plate, the slide rail sets up on the mounting panel, sliding connection has the tight frame of supporting that is used for supporting tight aluminum alloy side frame on the slide rail, first catch plate is kept away from the one end of pulling plate is rotated and is connected on the mounting panel, the second catch plate is kept away from the one end of pulling plate is rotated and is connected the one end of supporting the tight frame.

Through adopting above-mentioned technical scheme, during the use, the operator starts spacing cylinder, the piston rod of spacing cylinder drives the pulling plate and removes, the pulling plate drives first catch plate and second catch plate and removes, under the direction of slide rail, the second catch plate promotes to support tight frame and remove towards aluminum alloy side frame, and support tightly aluminum alloy side frame and aluminum alloy bottom plate's lateral wall, and through setting up first catch plate and second catch plate, make to support tight frame and receive the power that is on a parallel with the slide rail all the time, reduce the possibility that the card went up at the in-process that removes of stopper frame.

Optionally, a stress plate is arranged on the bearing frame and corresponds to the plurality of first abutting assemblies one to one, a first stress block is arranged on the stress plate, and the first stress block is in contact with the side wall of the aluminum alloy side frame, which faces away from the limiting frame.

Through adopting above-mentioned technical scheme, when the aluminum alloy side frame was supported tightly, first atress piece also received supporting power, has reduced the aluminum alloy side frame because of unilateral atress too big possibility that produces the deformation.

Optionally, the device further comprises a positioner, one end of the bearing frame is connected with a driving shaft of the positioner, and the other end of the bearing frame is connected with a driven shaft of the positioner.

Through adopting above-mentioned technical scheme, during the use, the operator starts the machine of shifting, and the machine of shifting drives rack and bearing frame reverse rotation for the opening of battery tray upwards, conveniently welds the stiffening beam in the battery tray, makes the welding seam be located the battery tray, and the product that the welding was accomplished is more pleasing to the eye.

Optionally, be equipped with a type frame on the mounting panel, can dismantle on the type frame and be connected with the locating piece, work as spacing conflict during the aluminum alloy side frame, first slurcam with the second slurcam all is in the horizontality, the locating piece is contradicted simultaneously the pulling rod first slurcam with the common junction of second slurcam.

Through adopting above-mentioned technical scheme, when the pulling plate rebound, the link of first catch plate and second catch plate and pulling plate all rebound, until the bottom of conflict locating piece, first catch plate and second catch plate are in horizontal position this moment, have reduced the pulling plate and have removed the distance too big for the second catch plate will support the frame and pull back, and does not support the possibility of tight aluminum alloy side frame.

In a second aspect, the present application provides a method for using a battery tray arc welding deformation control device. The method comprises the following steps:

s1: placing an aluminum alloy bottom plate on the plurality of slideways and pushing the aluminum alloy bottom plate;

s2: starting a pushing cylinder, and closing the pushing cylinder when the stiffening beam is inserted into the corresponding clamping groove;

s3: simultaneously starting a plurality of positioning cylinders;

s4: starting the displacement machine to enable the slide rail to be arranged upwards, splicing the aluminum alloy side frame with the aluminum alloy bottom plate, and then starting the limiting cylinder;

s5: and starting the positioner again to enable the opening of the battery tray to be arranged upwards, and then simultaneously welding from two sides of the positioner by using two welding robots.

By adopting the technical scheme, the aluminum alloy bottom plate is placed on the roller, the aluminum alloy bottom plate is pushed to be in sliding fit with the roller, the reinforcing beam is placed on the aluminum alloy bottom plate, the aluminum alloy bottom plate and the reinforcing beam move towards the direction of the clamping groove through the pushing air cylinder until the reinforcing beam is inserted into the clamping groove, preliminary limiting is realized, then the plurality of positioning air cylinders are started simultaneously, the plurality of positioning air cylinders simultaneously abut against the aluminum alloy bottom plate, at the moment, the clamping claws limit the reinforcing beam, then the positioner is started, the reinforcing beam is enabled to be arranged upwards, the opening of the battery tray is also arranged upwards, then the aluminum alloy side frame is spliced with the aluminum alloy bottom plate, a gap to be welded is enabled to be upwards, then an operator starts the limiting air cylinder, a piston rod of the limiting air cylinder drives the pulling plate to move, the pulling plate drives the first pushing plate and the second pushing plate to move, under the guidance of the sliding rail, the second pushing plate pushes the abutting frame to move towards the aluminum alloy side frame, the aluminum alloy side frame abuts against the side frame and the side wall of the aluminum alloy bottom plate, finally, welding of the aluminum alloy side frame and the side frame abut against the side wall of the aluminum alloy bottom plate through the positioner, deformation amount of the welding machine can be welded, and the battery tray can be welded at the maximum, and the deformation of the aluminum alloy bottom plate can be prevented, and the displacement of the battery tray can be prevented after the battery can be welded.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the battery tray, the first limiting parts, the placing plates, the plurality of positioning cylinders and the first abutting assembly are arranged, the aluminum alloy bottom plate is placed on the plurality of placing plates, the plurality of placing plates jointly support the aluminum alloy bottom plate, then the aluminum alloy bottom plate is moved between the bearing frame and the placing frame, the reinforcing beam is placed on the aluminum alloy bottom plate, then the plurality of positioning cylinders are started simultaneously, the plurality of positioning cylinders move together towards the first limiting parts until the first limiting parts limit the reinforcing beam, at the moment, the aluminum alloy bottom plate and the reinforcing beam are both limited, then the aluminum alloy side frame is spliced with the two sides of the aluminum alloy bottom plate, the aluminum alloy bottom plate and the aluminum alloy side frame are abutted through the first abutting assembly, then the spliced part of the aluminum alloy bottom plate and the aluminum alloy side frame is welded, the contact points of the aluminum alloy bottom plate and the reinforcing beam are welded, the aluminum alloy bottom plate, the aluminum alloy side frame and the reinforcing beam are both limited, so that the heated deformation can not cause displacement, and the quality of the welded battery tray can be improved;

2. this application is through setting up spacing cylinder, a slide rail, the mounting panel, the pulling plate, first catch plate and second catch plate, start spacing cylinder, the piston rod of spacing cylinder drives the pulling plate and removes, the pulling plate drives first catch plate and second catch plate and removes, under the direction of slide rail, the second catch plate promotes to support tight frame and remove towards aluminum alloy side frame, and support tight with the lateral wall of aluminum alloy side frame and aluminum alloy bottom plate, and through setting up first catch plate and second catch plate, make to support tight frame and receive the power of parallel and slide rail all the time, reduce the possibility that the card went up at the in-process of removal of spacing frame.

Drawings

Fig. 1 is a schematic structural diagram of the present application.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 1.

Fig. 4 is a schematic structural view of the cross plate and the riser in the embodiment of the present application.

Fig. 5 is an enlarged view of a portion C in fig. 4.

Fig. 6 is an enlarged view of a portion D in fig. 1.

FIG. 7 is a schematic diagram of a limiting cylinder, a sliding block, a force bearing plate and a first force bearing block in the embodiment of the application.

Description of reference numerals: 1. placing a rack; 2. a bearing frame; 3. a load-bearing bar; 4. a connecting plate; 5. a drive shaft; 6. a driven shaft; 7. a push cylinder; 8. placing a plate; 9. a slideway; 10. a roller; 11. positioning the air cylinder; 12. a transverse plate; 13. a vertical plate; 14. a clamping claw; 15. a clamping groove; 16. a limiting cylinder; 17. a slide rail; 18. mounting a plate; 19. pulling the movable plate; 20. a first push plate; 21. a second pusher plate; 22. a sliding plate; 23. a compression plate; 24. a slider; 25. a reinforcing beam; 27. a resisting block; 28. a stress plate; 29. a first force-bearing block; 30. a gantry frame; 31. positioning blocks; 32. an aluminum alloy base plate; 33. an aluminum alloy side frame; 34. and (7) positioning the blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a battery tray arc welding deformation control device. Referring to fig. 1, 2 and 3, the arc welding deformation control device for the battery tray comprises a positioner, a placing frame 1 and a bearing frame 2, wherein two ends of the bearing frame 2 are connected with the placing frame 1 through bearing rods 3, the bearing frame 2 is arranged on the placing frame 1 vertically and oppositely, two ends of the bearing frame 2 are connected with the positioner through connecting plates 4, one connecting plate 4 is connected with a driving shaft 5 of the positioner, and the other connecting plate 4 is connected with a driven shaft 6 of the positioner.

Referring to fig. 1, 2 and 3, two push cylinders 7 are arranged on the placing frame 1, the two push cylinders 7 are located on the central line of the placing frame 1, a placing plate 8 is connected to a piston rod of each push cylinder 7, the placing plate 8 is arranged along the width direction of the placing frame 1, a slide 9 is arranged on the placing plate 8, the slide 9 comprises a plurality of rollers 10 arranged along the length direction of the placing plate 8, and the rollers 10 are all rotatably connected to the placing plate 8.

Referring to fig. 1, 4 and 5, a plurality of positioning cylinders 11 are arranged on the placing frame 1, the plurality of positioning cylinders 11 are divided into three groups, each group of positioning cylinders 11 is arranged at intervals, and the three groups of positioning cylinders 11 are uniformly distributed on the placing frame 1. Be connected with locating piece 34 on the piston rod of positioning cylinder 11, be provided with the first locating part with a plurality of stiffening beams 25 one-to-one on the bearing frame 2, first locating part sets up with push cylinder 7 is relative, first locating part includes spacing and two joint claw 14, spacing includes diaphragm 12 and riser 13, riser 13 is connected with bearing frame 2, diaphragm 12 keeps away from the end connection of bearing frame 2 with riser 13, a joint claw 14 is all connected at the both ends of diaphragm 12, offer on the joint claw 14 and be used for supplying stiffening beam 25 male joint groove 15, joint groove 15 communicates to the both ends of joint claw 14, when stiffening beam 25 inserts, joint groove 15 laminates and supports tightly with the stiffening beam 25 lateral wall that corresponds.

Referring to fig. 1, fig. 6 and fig. 7, be provided with a plurality of first tight subassemblies that support that are used for supporting tight aluminum alloy side frame 33 on the bearing frame 2, first tight subassembly that supports includes spacing cylinder 16, slide rail 17, mounting panel 18, the pulling plate 19, first slurcam 20 and second slurcam 21, mounting panel 18 is connected on bearing frame 2 and is located the edge of bearing frame 2, the interval sets up between two adjacent mounting panels 18, the vertical setting of spacing cylinder 16 is on mounting panel 18, the piston rod of spacing cylinder 16 runs through mounting panel 18 and connects the pulling plate 19, the vertical setting of pulling plate 19.

Referring to fig. 1, fig. 6 and fig. 7, first catch plate 20 and second catch plate 21 are all connected on pulling plate 19 in a coaxial rotation manner, slide rail 17 connects on mounting panel 18, the length direction of slide rail 17 sets up with the length direction of bearing frame 2 is perpendicular, sliding connection has the support frame that is used for supporting tight aluminum alloy side frame 33 on slide rail 17, support the frame and include sliding plate 22, pressure strip 23 and slider 24, pressure strip 23 fixed connection is on sliding plate 22, slider 24 fixed connection is in the bottom of sliding plate 22, set up the spout with slide rail 17 sliding fit on the slider 24, be provided with a plurality of support blocks 27 that are used for supporting tight aluminum alloy side frame 33 on the vertical lateral wall of pressure strip 23.

Referring to fig. 1, 6 and 7, the end of the first pusher plate 20 remote from the pull plate 19 is pivotally attached to the mounting plate 18, and the end of the second pusher plate 21 remote from the pull plate 19 is pivotally attached to the end of the slide plate 22. The bearing frame 2 is provided with a stress plate 28 which is arranged in a one-to-one correspondence manner with the first abutting assemblies, the stress plate 28 is vertically and fixedly connected to one end, away from the limiting cylinder 16, of the mounting plate 18, the stress plate 28 is connected with first stress blocks 29 which are arranged in a one-to-one correspondence manner with the abutting blocks 27, and the first stress blocks 29 are in contact with the side wall of the aluminum alloy side frame 33, back to the limiting frame.

Referring to fig. 1, 6 and 7, one end of the mounting plate 18, which is far away from the stress plate 28, is connected with a door-shaped frame 30, the door-shaped frame 30 covers the pulling rod, the top of the door-shaped frame 30 is connected with a positioning block 31 through a bolt, when the limiting frame abuts against an aluminum alloy side frame 33, the first pushing plate 20 and the second pushing plate 21 are both in a horizontal state, and the positioning block 31 abuts against the joint of the pulling rod, the first pushing plate 20 and the second pushing plate 21.

The implementation principle of the arc welding deformation control device for the battery tray in the embodiment of the application is as follows: an operator places the aluminum alloy bottom plate 32 on the roller 10, pushes the aluminum alloy bottom plate 32 to be in sliding fit with the roller 10, moves the aluminum alloy bottom plate 32 to a proper position, places the reinforcing beam 25 on the aluminum alloy bottom plate 32, starts the pushing cylinder 7, and pushes the pushing cylinder 7 to move the aluminum alloy bottom plate 32 and the reinforcing beam 25 together towards the direction of the clamping groove 15 until the reinforcing beam 25 is inserted into the clamping groove 15, so that preliminary limiting is realized;

then, the plurality of positioning cylinders 11 are started simultaneously, the plurality of positioning cylinders 11 move towards the direction of the aluminum alloy bottom plate 32 simultaneously, the positioning blocks 34 abut against the aluminum alloy bottom plate 32 and further abut against the reinforcing beam 25, the aluminum alloy bottom plate 32 is abutted against the bearing frame 2, the clamping claws 14 limit the reinforcing beam 25, then the positioner is started, the reinforcing beam 25 is arranged upwards, the opening of the battery tray is also arranged upwards, then the aluminum alloy side frame 33 is spliced with the aluminum alloy bottom plate 32, the gap to be welded is arranged upwards, then an operator starts the limiting cylinder 16, the piston rod of the limiting cylinder 16 drives the pulling plate 19 to move, the pulling plate 19 drives the first pushing plate 20 and the second pushing plate 21 to move, the second pushing plate 21 pushes the sliding plate 22, the sliding block 24 is in sliding fit with the sliding rail 17, the second pushing plate 21 pushes the abutting frame to move towards the aluminum alloy side frame 33, and abuts against the side wall of the aluminum alloy bottom plate 32;

and finally, welding is carried out simultaneously through welding robots on two sides of the positioner, so that the deformation can be counteracted to the maximum extent, and the aluminum alloy bottom plate 32, the aluminum alloy side frame 33 and the reinforcing beam 25 are limited, so that the deformation after heating can not cause the displacement of the aluminum alloy side frame 33 and the reinforcing beam, and the quality of the welded battery tray can be improved.

The embodiment of the application also discloses a battery tray arc welding deformation control device, which comprises the following steps:

s1: placing the aluminum alloy bottom plate 32 on the plurality of slideways 9 and pushing the aluminum alloy bottom plate 32;

s2: starting the pushing cylinder 7, and closing the pushing cylinder 7 when the reinforcing beam 25 is inserted into the corresponding clamping groove 15;

s3: simultaneously starting a plurality of positioning cylinders 11;

s4: starting a displacement machine to enable the sliding rail 17 to be arranged upwards, splicing the aluminum alloy side frame 33 with the aluminum alloy bottom plate 32, and then starting the limiting cylinder 16;

s5: and starting the positioner again to enable the opening of the battery push disc to face upwards, and then simultaneously welding from two sides of the positioner by using two welding robots.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a battery tray arc-welding deformation control device, includes rack (1) and bearing frame (2), bearing frame (2) with rack (1) is connected through bearing bar (3), bearing frame (2) with rack (1) sets up its characterized in that relatively: be equipped with on bearing frame (2) with the first locating part that a plurality of stiffening beams (25) one-to-one set up, sliding connection has a plurality of boards (8) of placing on rack (1), be provided with a plurality of location cylinders (11) on rack (1), be provided with a plurality of tight subassemblies of first supporting that are used for supporting tight aluminum alloy side frame (33) on bearing frame (2).

2. The battery tray arc welding deformation control apparatus according to claim 1, wherein: the novel bearing rack is characterized in that a slide (9) is arranged on the placing plate (8), the slide (9) comprises a plurality of rollers (10) which are arranged along the length direction of the placing plate (8), the slide (9) is arranged along the width direction of the placing rack (1), pushing cylinders (7) which are arranged in one-to-one correspondence with the placing plates (8) are arranged on the placing rack (1), and piston rods of the pushing cylinders (7) are connected with the placing plates (8).

3. The battery tray arc-welding deformation control device according to claim 2, characterized in that: the first limiting part comprises a limiting frame and two clamping claws (14), the limiting frame is arranged on the bearing frame (2), the two clamping claws (14) are arranged at two ends of the limiting frame, clamping grooves (15) are formed in the clamping claws (14), and the clamping grooves (15) are tightly abutted to corresponding reinforcing beams (25).

4. The battery tray arc-welding deformation control device according to claim 3, characterized in that: first tight subassembly of supporting includes spacing cylinder (16), slide rail (17), mounting panel (18), pulling plate (19), first pushing plate (20) and second pushing plate (21), mounting panel (18) set up on bearing frame (2), spacing cylinder (16) set up on mounting panel (18), the piston rod of spacing cylinder (16) runs through mounting panel (18) and connects pulling plate (19), first pushing plate (20) with the equal coaxial rotation of second pushing plate (21) is connected on pulling plate (19), slide rail (17) set up on mounting panel (18), sliding connection has the tight frame that supports that is used for supporting tight aluminum alloy side frame (33) on slide rail (17), first pushing plate (20) are kept away from the one end of pulling plate (19) is rotated and is connected on mounting panel (18), second pushing plate (21) are kept away from the one end of pulling plate (19) is rotated and is connected the one end of supporting the tight frame.

5. The battery tray arc-welding deformation control device according to claim 4, characterized in that: the bearing frame (2) is provided with stress plates (28) which correspond to the first abutting assemblies one to one, first stress blocks (29) are arranged on the stress plates (28), and the first stress blocks (29) are in contact with the side wall of the limiting frame, back to the aluminum alloy side frame (33).

6. The battery tray arc welding deformation control apparatus according to claim 4, wherein: the device is characterized by further comprising a position changing machine, wherein one end of the bearing frame (2) is connected with a driving shaft (5) of the position changing machine, and the other end of the bearing frame is connected with a driven shaft (6) of the position changing machine.

7. The battery tray arc-welding deformation control device according to claim 4, characterized in that: be equipped with a type frame (30) on mounting panel (18), can dismantle on type frame (30) and be connected with locating piece (31), work as spacing conflict during aluminum alloy side frame (33), first slurcam (20) with second slurcam (21) all are in the horizontality, locating piece (31) are contradicted simultaneously the pulling rod first slurcam (20) with the common junction of second slurcam (21).

8. A method of using the battery tray arc welding deformation control apparatus according to claim 4, characterized in that: the method comprises the following steps:

s1: placing an aluminum alloy bottom plate (32) on the plurality of slideways (9) and pushing the aluminum alloy bottom plate (32);

s2: starting a pushing cylinder (7), and closing the pushing cylinder (7) when the reinforcing beam (25) is inserted into the corresponding clamping groove (15);

s3: -activating a plurality of said positioning cylinders (11) simultaneously;

s4: starting the positioner to enable the sliding rail (17) to be arranged upwards, splicing an aluminum alloy side frame (33) and an aluminum alloy bottom plate (32), and then starting the limiting cylinder (16);

s5: and starting the positioner again to enable the opening of the battery tray to be arranged upwards, and then simultaneously welding from two sides of the positioner by using two welding robots.

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