Welding equipment special for power battery cell support

Abstract

The invention belongs to the technical field of welding equipment, and particularly discloses special welding equipment for a power battery cell bracket, which comprises a welding unit and a positioning unit, the positioning unit comprises a working table, and a battery cell bracket positioning assembly and an n-shaped frame positioning assembly which are mounted above the working table; the battery cell bracket positioning assembly comprises a first positioning mechanism and two groups of second positioning mechanisms; the two groups of second positioning mechanisms are used for positioning one side, needing to be provided with the n-shaped frame, of the short edge of the battery cell bracket; the first positioning mechanism is used for positioning the other short edge of the battery cell bracket; the n-shaped frame positioning assembly comprises a third positioning mechanism and a fourth positioning mechanism, the third positioning mechanism is used for positioning two groups of n-shaped frames on the long side of the battery cell bracket, and the fourth positioning mechanism is used for positioning one group of n-shaped frames on the short side of the battery cell bracket. The battery cell support and the n-shaped frame are positioned by arranging the battery cell support positioning assembly and the n-shaped frame positioning assembly, and it is guaranteed that the battery cell support and the n-shaped frame do not move relatively in the welding process.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a special welding equipment for a power battery cell bracket. Background Art

[0002] As the power source of electric vehicles and energy storage power sources, power battery packs are generally assembled into battery modules by hundreds or thousands of single cells in a certain series-parallel mode. During the assembly of automotive batteries, the cells need to be reassembled into modules. Specifically, the cells that have passed the inspection need to be installed in the lower bracket, and the lower bracket with the cells installed needs to be fixed to the upper bracket.

[0003] After the cell holder is stamped, three "J"-shaped frames are welded on the surface of the cell holder. In order to ensure the stability of the three "J"-shaped frames during welding, the cell holder is usually positioned first, and then the "J"-shaped frames are placed in the designated position for welding. However, since there is no positioning mechanism during the welding process, the "J"-shaped frames are likely to shift during the welding process, resulting in the cell holder being unable to match the cell later. Summary of the invention

[0004] The purpose of the present invention is to provide a special welding equipment for a power battery cell bracket. The existing welding positioning equipment cannot simultaneously position the cell bracket and the frame, resulting in the problem that the frame may shift during the welding process.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a special welding equipment for a power battery cell bracket comprises a welding unit and a positioning unit, wherein the welding unit is used to weld the cell bracket and the several-shaped frame on the positioning unit, and the positioning unit is used to fix and position the cell bracket and the several-shaped frame; two groups of the several-shaped frames are installed side by side on the long side of the cell bracket, and another group of the several-shaped frames is installed on the short side of the cell bracket; a threaded hole is provided on the top of the several-shaped frame, and a bolt is threadedly connected in the threaded hole, and the head of the bolt is located inside the several-shaped frame;

[0006] The positioning unit includes a workbench and a battery cell holder positioning assembly and a frame positioning assembly installed above the workbench; the battery cell holder positioning assembly includes a first positioning mechanism and two groups of second positioning mechanisms, the two groups of second positioning mechanisms are used to position the short side of the battery cell holder on the side of the frame where the short side needs to be installed; the first positioning mechanism is used to position the other short side of the battery cell holder; the first positioning mechanism and the second positioning mechanism both include a first mounting seat, a first rotating drive member, a first upper clamping structure and a first lower supporting structure, the first mounting seat is fixed to the workbench, the first rotating drive member and the first lower supporting structure are installed on the first mounting seat; the first upper clamping structure is installed at the driving end of the first rotating drive member; the first lower supporting structure is used to support the battery cell holder, and the first upper clamping structure is used to press down the upper side of the battery cell holder;

[0007] The mold frame positioning assembly includes a third positioning mechanism and a fourth positioning mechanism, the third positioning mechanism is used to position two groups of mold frames on the long side of the battery cell holder, and the fourth positioning mechanism is used to position a group of mold frames on the short side of the battery cell holder; the third positioning mechanism and the fourth positioning mechanism both include a second mounting seat, a second rotating drive member, a second upper clamping structure, and a second lower supporting structure; the second mounting seat is fixed to the workbench, and the second rotating drive member and the second lower supporting structure are mounted on the second mounting seat; the second upper clamping structure is mounted on the driving end of the second rotating drive member; the second lower supporting structure is used to support the battery cell holder, and the second upper clamping structure is used to press down the mold frame.

[0008] Further, the first upper clamping structure includes a first mounting frame and two groups of first upper pressure blocks, the first mounting frame is fixed to the driving end of the first rotating drive member, and the two groups of first upper pressure blocks are fixed side by side on both sides of the first mounting frame; the first lower supporting structure includes a second mounting frame and two groups of first lower supporting blocks, the second mounting frame is fixed to the first mounting seat, the two groups of first lower supporting blocks are fixed side by side on both sides of the second mounting frame, and the two groups of first upper pressure blocks and the two groups of first lower supporting blocks correspond one to one.

[0009] Further, the second upper clamping structure includes a third mounting frame, a second upper clamping block and a suction piece, and the second upper clamping block is fixed on the third mounting frame; the second upper clamping structure of the third positioning mechanism is provided with two groups of the second upper clamping blocks; a positioning hole is provided at the center of the second upper clamping block, the suction piece is located in the positioning hole and can move vertically in the positioning hole, and the positioning hole can be directly opposite to the bolt on the several-type frame; the suction piece is used to tighten the bolt; the bottom of the second upper clamping block is provided with a groove matching the upper side of the several-type frame, and openings are provided on both sides of the groove, and the two sides of the groove without openings correspond to the open sides of the several-type frame; the two sides of the groove without openings are used to position the two sides of the several-type frame; positioning blocks are respectively installed on the two sides of the groove with openings, and the positioning blocks are used to position the other two sides of the several-type frame; the second lower supporting structure includes a fourth mounting frame and a second lower supporting block, the fourth mounting frame is fixed on the second mounting seat, the second lower supporting block is fixed on the second mounting frame, and the second upper clamping block and the second lower supporting block are correspondingly arranged.

[0010] Furthermore, the driving end of the second rotary driving member is connected to a linear driving member, and the driving end of the linear driving member is connected to the third mounting bracket.

[0011] Furthermore, a pressing plate is connected to the first upper pressing structure, and the pressing plate is used to press on the upper side of the battery cell bracket.

[0012] Furthermore, the clamping plate is provided with a plurality of slots, which are opposite to the through holes on the battery cell holder; the first lower supporting structure and the second lower supporting structure are both connected with a fifth mounting frame, and the fifth mounting frame is provided with a positioning piece opposite to the through hole, and the positioning piece is used to pass through the through hole for positioning.

[0013] Furthermore, a guide hole is provided in the linear drive member, a guide rod is fixed on the third mounting frame, and the guide rod is slidably connected in the guide hole; a clamping assembly is fixed on the linear drive member, and the clamping assembly is used to clamp the guide rod.

[0014] Furthermore, the clamping assembly includes a fixed plate, a connecting plate, a clamping rod, a support rod, a connecting rod and a driving rod, the fixed plate is fixed on the linear driving member, the upper side of the clamping rod is fixed on the connecting plate; the lower side of the clamping rod is slidably connected in the guide hole, and the connecting plate cannot pass through the guide hole; one side of the support rod is fixed on the fixed plate, the other side of the support rod is hinged to the driving rod, and the two sides of the connecting rod are respectively hinged to the connecting plate and the driving rod.

[0015] The working principle of this technical solution is:

[0016] The cell support is placed on the first lower support block and the second lower support block, and each positioning member is positioned through the through hole on the cell support. Then the three groups of first rotating driving members are started, and the first rotating driving member drives the first upper pressing block to press down on the cell support through the first mounting frame, and the pressing plate will also press down on the upper surface of the cell support. Then the two groups of second rotating driving members are driven, and the second rotating driving member drives the linear driving member and the third mounting frame to rotate above the cell support. Then the several-shaped frame is inserted into the groove, and the suction member and the bolt generate attraction, so that the entire several-shaped frame is sucked. Then the linear driving member is started, and the linear driving member drives the second upper pressing block and the several-shaped frame to press down on the cell support through the third mounting frame. Then the driving rod is pressed, and the driving rod drives the connecting plate and the pressing rod to press down, so that the pressing rod is pressed on the guide rod. Thereby, the three groups of several-shaped frames are pressed on the cell support. Then the welding unit is started, and the welding unit welds both sides of the several-shaped frame, so that the several-shaped frame is welded on the cell support. After welding is completed, lift the drive rod upward to move the clamping rod away from the guide rod. Then move the suction piece upward to disengage the suction piece from the bolt. Then start the linear drive member, which drives the second upper clamping block to move upward through the third mounting frame, so that the second upper clamping block leaves the jig. Then start the second rotary drive member, which drives the linear drive member and the third mounting frame to rotate toward the side away from the battery holder. Then start the first rotary drive member, which drives the first mounting frame to rotate toward the side away from the battery holder. Finally, take the battery holder upward.

[0017] The beneficial effects of this technical solution are:

[0018] ① In this technical solution, the battery holder and the frame are positioned by setting a battery holder positioning component and a frame positioning component to ensure that the two do not move relative to each other during the welding process.

[0019] ② In this technical solution, a clamping assembly is provided to clamp the guide rod to avoid position changes of the jigs during the welding process.

[0020] ③ In this technical solution, the battery holder is positioned by setting a positioning piece to ensure the accuracy of the position of the battery holder.

[0021] ④ In this technical solution, by setting a clamping plate, the upper side of the battery holder can be clamped over a large area.

[0022] ⑤ In this technical solution, by setting a suction piece, the entire frame can be sucked and tightened by bolts, which is convenient for subsequent tightening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of the special welding equipment for the power battery cell bracket of the present invention;

[0024] Figure 2 for Figure 1 The main view;

[0025] Figure 3 for Figure 1 A top view of

[0026] Figure 4 for Figure 1 A schematic structural diagram of the first positioning mechanism;

[0027] Figure 5 for Figure 1 A schematic diagram of the structure of the second positioning mechanism;

[0028] Figure 6 for Figure 1 A schematic diagram of the structure of the third positioning mechanism and the fourth positioning mechanism;

[0029] Figure 7 for Figure 6 A schematic diagram of the structure of the second upper clamping structure;

[0030] Figure 8 for Figure 6 a perspective view of the second upper clamping structure;

[0031] Fig. 9 for Figure 6 Schematic diagram of the structure of the clamping assembly (when the linear drive component is removed from the housing). DETAILED DESCRIPTION

[0032] The following is further described in detail through specific implementation methods:

[0033] The figure marks in the drawings of the specification include: workbench 1, control unit 2, battery cell bracket 3, mold frame 4, first positioning mechanism 5, second positioning mechanism 6, third positioning mechanism 7, fourth positioning mechanism 8, first mounting seat 9, first rotary drive member 10, first upper clamping structure 11, first lower support structure 12, first mounting frame 13, first upper clamping block 14, second mounting frame 15, first lower support block 16, second mounting seat 17, second rotary drive member 18, second upper clamping structure 19, second lower support structure 20, linear drive member 21, third mounting frame 22, second upper clamping block 23, suction member 24, bolt 25, pressing head 26, positioning block 27, fourth mounting frame 28, second lower support block 29, guide rod 30, clamping assembly 31, fixing plate 32, connecting plate 33, clamping rod 34, support rod 35, connecting rod 36, driving rod 37, clamping plate 38, positioning member 39, moving wheel group 40.

[0034] 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.

[0035] The embodiment is basically as shown in the attached Figure 1-9 As shown: Special welding equipment for power battery cell holders, including a control unit 2, a welding unit and a positioning unit. The welding unit is used to weld the cell holder 3 and the frame 4 on the positioning unit. The welding equipment can use a welding gun for manual welding or a welding robot for welding. The control unit 2 is used to control the positioning unit. The positioning unit is used to fix and position the cell holder 3 and the frame 4; two groups of frames 4 are installed side by side on the long side of the cell holder 3, and the other group of frames 4 is installed on the short side of the cell holder 3; a threaded hole is provided on the top of the frame 4, and a bolt 25 is threadedly connected to the threaded hole, and the head of the bolt 25 is located inside the frame 4, as shown in FIG. Figure 8 shown.

[0036] The positioning unit includes a workbench 1 and a cell support positioning assembly and a frame positioning assembly installed above the workbench 1; a moving wheel set 40 is provided at the bottom of the workbench 1. The cell support positioning assembly includes a first positioning mechanism 5 and two sets of second positioning mechanisms 6. The two sets of second positioning mechanisms 6 are used to position the side of the short side of the cell support 3 where the frame 4 needs to be installed (such as Figure 5 The first positioning mechanism 5 is used to position the other short side of the battery holder 3 (as shown); Figure 4 As shown in Figure 4 , 5As shown (the figure shows the starting and ending positions of the rotation), the first positioning mechanism 5 and the second positioning mechanism 6 each include a first mounting seat 9, a first rotating driving member 10, a first upper clamping structure 11 and a first lower supporting structure 12. The first mounting seat 9 is fixed on the workbench 1, and the first rotating driving member 10 and the first lower supporting structure 12 are installed on the first mounting seat 9; the first upper clamping structure 11 is installed at the driving end of the first rotating driving member 10; the first lower supporting structure 12 is used to support the battery holder 3, and the first upper clamping structure 11 is used to press down the upper side of the battery holder 3. The first upper clamping structure 11 includes a first mounting frame 13 and two groups of first upper clamps 14. The first mounting frame 13 is fixed to the driving end of the first rotating driving member 10, and the two groups of first upper clamps 14 are fixed side by side on both sides of the first mounting frame 13. The first lower supporting structure 12 includes a second mounting frame 15 and two groups of first lower supporting blocks 16. The second mounting frame 15 is fixed on the first mounting seat 9. The two groups of first lower supporting blocks 16 are fixed side by side on both sides of the second mounting frame 15, and the two groups of first upper pressing blocks 14 correspond to the two groups of first lower supporting blocks 16 one by one.

[0037] like Figure 6 As shown (the figure shows the starting and ending positions of the rotation), the mold frame positioning assembly includes a third positioning mechanism 7 and a fourth positioning mechanism 8. The third positioning mechanism 7 is used to position two groups of mold frames 4 on the long sides of the battery cell holder 3, and the fourth positioning mechanism 8 is used to position a group of mold frames 4 on the short sides of the battery cell holder 3. The third positioning mechanism 7 and the fourth positioning mechanism 8 both include a second mounting seat 17, a second rotating drive member 18, a second upper clamping structure 19, and a second lower support structure 20; the second mounting seat 17 is fixed on the workbench 1, and the second rotating drive member 18 and the second lower support structure 20 are mounted on the second mounting seat 17; the second upper clamping structure 19 is mounted on the driving end of the second rotating drive member 18, specifically, the driving end of the second rotating drive member 18 is connected to a linear drive member 21, and the driving end of the linear drive member 21 is connected to the third mounting frame 22. Fig. 9 As shown, a guide hole is provided in the linear drive member 21, a guide rod 30 is fixed on the third mounting frame 22, and the guide rod 30 is slidably connected in the guide hole; a clamping assembly 31 is fixed on the linear drive member 21, and the clamping assembly 31 is used to clamp the guide rod 30. The clamping assembly 31 includes a fixed plate 32, a connecting plate 33, a clamping rod 34, a support rod 35, a connecting rod 36 and a driving rod 37. The fixed plate 32 is fixed on the linear drive member 21, and the upper side of the clamping rod 34 is fixed on the connecting plate 33; the lower side of the clamping rod 34 is slidably connected in the guide hole, and the connecting plate 33 cannot pass through the guide hole. One side of the support rod 35 is fixed on the fixed plate 32, and the other side of the support rod 35 is hinged to the driving rod 37. The two sides of the connecting rod 36 are respectively hinged to the connecting plate 33 and the driving rod 37. The clamping rod 34 is opposite to the guide rod 30 and is used to clamp the guide rod 30.

[0038] The second lower support structure 20 is used to support the battery holder 3, and the second upper clamping structure 19 is used to press down the mold frame 4. The second upper clamping structure 19 includes a third mounting frame 22, a second upper clamping block 23 and a suction member 24. The second upper clamping block 23 is fixed on the third mounting frame 22. The second upper clamping structure 19 of the third positioning mechanism 7 is provided with two groups of second upper clamping blocks 23. Figure 7 , 8 As shown, a positioning hole is provided at the center of the second upper pressing block 23, and the suction piece 24 is located in the positioning hole and can move vertically in the positioning hole. Specifically, the suction piece 24 and the positioning hole are threadedly connected, and the vertical movement of the suction piece 24 can be achieved by rotating the suction piece 24. The positioning hole can be directly opposite to the bolt 25 on the mold frame 4; the suction piece 24 is used to suck the bolt 25, and a magnet can be provided at the bottom of the suction piece 24. A groove matching the upper side of the mold frame 4 is provided at the bottom of the second upper pressing block 23, and a pressing head 26 is provided at the top of the groove, and the pressing head 26 is used to press the top of the mold frame 4. Openings are provided on both sides of the groove, and the two sides of the groove without openings correspond to the open sides of the mold frame 4 ( Figure 8 The two sides of the groove without openings are used to position the two sides of the frame 4. The two sides of the groove with openings ( Figure 8 The left and right sides of the mold frame 4 are respectively provided with positioning blocks 27, which are used to position the other two sides of the mold frame 4. The second lower support structure 20 includes a fourth mounting frame 28 and a second lower support block 29, the fourth mounting frame 28 is fixed on the second mounting seat 17, the second lower support block 29 is fixed on the second mounting frame 15, and the second upper pressing block 23 and the second lower support block 29 are correspondingly arranged.

[0039] The first upper clamping structure 11 is also connected to a clamping plate 38, which is used to press on the upper side of the battery holder 3. The clamping plate 38 is provided with a plurality of notches, which are directly opposite to the through holes on the battery holder 3. The first lower supporting structure 12 and the second lower supporting structure 20 are both connected to a fifth mounting frame, and the fifth mounting frame is provided with a positioning member 39 directly opposite to the through hole, and the positioning member 39 is used to pass through the through hole for positioning, and the positioning member 39 is threadedly connected to the fifth mounting frame, and the positioning member 39 can be vertically moved by rotating the positioning member 39.

[0040] The specific implementation process is as follows:

[0041] The cell holder 3 is placed on the first lower support block 16 and the second lower support block 29, and each positioning member 39 is positioned through the through hole on the cell holder 3. Then the three groups of first rotating driving members 10 are started, and the first rotating driving member 10 drives the first upper pressing block 14 to press down on the cell holder 3 through the first mounting frame 13, and the pressing plate 38 is also pressed down on the upper surface of the cell holder 3. Then the two groups of second rotating driving members 18 are driven, and the second rotating driving member 18 drives the linear driving member 21 and the third mounting frame 22 to rotate to the top of the cell holder 3. Then the mold frame 4 is inserted into the groove, and the suction member 24 and the bolt 25 generate attraction, so that the entire mold frame 4 is sucked. Then the linear driving member 21 is started, and the linear driving member 21 drives the second upper pressing block 23 and the mold frame 4 to press down on the cell holder 3 through the third mounting frame 22. Then, the driving rod 37 is pressed, and the driving rod 37 drives the connecting plate 33 and the clamping rod 34 to be pressed down, so that the clamping rod 34 is pressed on the guide rod 30, so that the three groups of the jigs 4 are clamped on the battery holder 3. Then, the welding unit is started, and the welding unit welds the two sides of the jigs 4, so that the jigs 4 are welded on the battery holder 3. After the welding is completed, the driving rod 37 is lifted upward, so that the clamping rod 34 moves in a direction away from the guide rod 30. Then, the suction member 24 is rotated to move the suction member 24 upward, so that the suction member 24 is separated from the bolt 25. Then, the linear driving member 21 is started, and the linear driving member 21 drives the second upper pressing block 23 to move upward through the third mounting frame 22, so that the second upper pressing block 23 leaves the jigs 4. Then, the second rotating driving member 18 is started, and the second rotating driving member 18 drives the linear driving member 21 and the third mounting frame 22 to rotate toward the side away from the battery holder 3. Then, the first rotating driving member 10 is started, and the first rotating driving member 10 drives the first mounting frame 13 to rotate toward the side away from the battery holder 3. Finally, the battery holder 3 is taken out upwards.

[0042] 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.

[0043] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Special welding equipment for power battery cell bracket, characterized by: It comprises a welding unit and a positioning unit, wherein the welding unit is used to weld a cell support (3) and a frame (4) on the positioning unit, and the positioning unit is used to fix and position the cell support (3) and the frame (4); two groups of the frame (4) are installed side by side on the long side of the cell support (3), and another group of the frame (4) is installed on the short side of the cell support (3); a threaded hole is provided on the top of the frame (4), a bolt (25) is threadedly connected in the threaded hole, and the head of the bolt (25) is located inside the frame (4); The positioning unit comprises a workbench (1), and a cell support positioning assembly and a frame positioning assembly installed above the workbench (1); the cell support positioning assembly comprises a first positioning mechanism (5) and two sets of second positioning mechanisms (6), the two sets of second positioning mechanisms (6) being used to position the side of the short side of the cell support (3) on which the frame (4) is to be installed; the first positioning mechanism (5) is used to position the other short side of the cell support (3); the first positioning mechanism (5) and the second positioning mechanism (6) both comprise a first mounting seat (9), a first rotating drive The first mounting seat (9) is fixed on the workbench (1), and the first rotating driving member (10) and the first lower supporting structure (12) are mounted on the first mounting seat (9); the first upper clamping structure (11) is mounted on the driving end of the first rotating driving member (10); the first lower supporting structure (12) is used to support the battery cell bracket (3), and the first upper clamping structure (11) is used to press down the upper side of the battery cell bracket (3); The mold frame positioning assembly comprises a third positioning mechanism (7) and a fourth positioning mechanism (8); the third positioning mechanism (7) is used to position two groups of mold frames (4) on the long side of the battery cell support (3), and the fourth positioning mechanism (8) is used to position a group of mold frames (4) on the short side of the battery cell support (3); the third positioning mechanism (7) and the fourth positioning mechanism (8) both comprise a second mounting seat (17), a second rotating drive member (18), a second upper clamping structure (19), and a second lower supporting structure (20); the second mounting seat (17) is fixed on the workbench (1), and the second rotating drive member (18) and the second lower supporting structure (20) are mounted on the second mounting seat (17); the second upper clamping structure (19) is mounted on the driving end of the second rotating drive member (18); the second lower supporting structure (20) is used to support the battery cell support (3), and the second upper clamping structure (19) is used to press down the mold frame (4).

2. The special welding equipment for power battery cell bracket according to claim 1 is characterized in that: The first upper clamping structure (11) comprises a first mounting frame (13) and two groups of first upper clamping blocks (14), wherein the first mounting frame (13) is fixed to the driving end of the first rotating driving member (10), and the two groups of the first upper clamping blocks (14) are fixed side by side on both sides of the first mounting frame (13); the first lower supporting structure (12) comprises a second mounting frame (15) and two groups of first lower supporting blocks (16), wherein the second mounting frame (15) is fixed to the first mounting seat (9), and the two groups of the first lower supporting blocks (16) are fixed side by side on both sides of the second mounting frame (15), and the two groups of the first upper clamping blocks (14) and the two groups of the first lower supporting blocks (16) correspond one to one.

3. The special welding equipment for power battery cell bracket according to claim 1 is characterized in that: The second upper clamping structure (19) comprises a third mounting frame (22), a second upper clamping block (23) and a suction piece (24), wherein the second upper clamping block (23) is fixed on the third mounting frame (22); the second upper clamping structure (19) of the third positioning mechanism (7) is provided with two groups of the second upper clamping blocks (23); a positioning hole is provided at the center of the second upper clamping block (23), the suction piece (24) is located in the positioning hole and can move vertically in the positioning hole, and the positioning hole can be directly opposite to the bolt (25) on the mold frame (4); the suction piece (24) is used to suction the bolt (25); the bottom of the second upper clamping block (23) is provided with a bolt that matches the upper side of the mold frame (4) A groove is provided on both sides of the groove, openings are provided on both sides of the groove, and the two sides of the groove without openings correspond to the open sides of the mold frame (4); the two sides of the groove without openings are used to position the two sides of the mold frame (4); the two sides of the groove with openings are respectively installed with positioning blocks (27), and the positioning blocks (27) are used to position the other two sides of the mold frame (4); the second lower support structure (20) comprises a fourth mounting frame (28) and a second lower support block (29), the fourth mounting frame (28) is fixed on the second mounting seat (17), the second lower support block (29) is fixed on the second mounting frame (15), and the second upper pressing block (23) and the second lower support block (29) are correspondingly arranged.

4. The special welding equipment for power battery cell bracket according to claim 3 is characterized in that: The driving end of the second rotary drive member (18) is connected to a linear drive member (21), and the driving end of the linear drive member (21) is connected to a third mounting frame (22).

5. The special welding equipment for power battery cell bracket according to claim 1, characterized in that: The first upper clamping structure (11) is also connected to a clamping plate (38), and the clamping plate (38) is used to press on the upper side of the battery cell support (3).

6. The special welding equipment for power battery cell bracket according to claim 5 is characterized in that: The clamping plate (38) is provided with a plurality of notches, and the notches are directly opposite to the through holes on the battery cell bracket (3); the first lower support structure (12) and the second lower support structure (20) are both connected to a fifth mounting frame, and the fifth mounting frame is provided with a positioning member (39) directly opposite to the through hole, and the positioning member (39) is used to pass through the through hole for positioning.

7. The special welding equipment for power battery cell bracket according to claim 4 is characterized in that: A guide hole is provided in the linear drive member (21), a guide rod (30) is fixed on the third mounting frame (22), and the guide rod (30) is slidably connected in the guide hole; a clamping assembly (31) is fixed on the linear drive member (21), and the clamping assembly (31) is used to clamp the guide rod (30).

8. The special welding equipment for power battery cell bracket according to claim 7, characterized in that: The clamping assembly (31) comprises a fixing plate (32), a connecting plate (33), a clamping rod (34), a supporting rod (35), a connecting rod (36) and a driving rod (37); the fixing plate (32) is fixed on the linear driving member (21); the upper side of the clamping rod (34) is fixed on the connecting plate (33); the lower side of the clamping rod (34) is slidably connected in the guide hole; the connecting plate (33) cannot pass through the guide hole; one side of the supporting rod (35) is fixed on the fixing plate (32); the other side of the supporting rod (35) is hinged to the driving rod (37); and the two sides of the connecting rod (36) are respectively hinged to the connecting plate (33) and the driving rod (37).

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