CN217167211U

CN217167211U - Welding equipment

Info

Publication number: CN217167211U
Application number: CN202220421375.5U
Authority: CN
Inventors: 不公告发明人
Original assignee: Guangdong Liyuanheng Technology Co ltd; Guangdong Lyric Robot Intelligent Automation Co Ltd
Current assignee: Guangdong Shunyuan Laser Technology Co ltd; Guangdong Lyric Robot Automation Co Ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-08-12
Anticipated expiration: 2032-02-25

Abstract

The utility model relates to a welding equipment technical field, in particular to welding equipment, including mounting platform, the welding mechanism who sets up on mounting platform in the slip and a plurality of groups rotatable fixture that sets up on mounting platform, a plurality of groups fixture are located welding mechanism's removal route, and one side slip that is provided with on mounting platform for welding mechanism is used for detecting the detection mechanism of top cap and casing pressure equipment position. Make top cap and electric core shell pressure equipment target in place when fixing electric core shell through fixture, ensure that top cap and casing welding target in place, prevent to weld partially, phenomenon such as rosin joint and weak point welding, guarantee the welding quality of electric core equipment, fixture detects whether top cap and casing pressure equipment target in place through detection mechanism after with top cap and electric core shell pressure equipment, further ensure that top cap and casing welding target in place, guarantee the welding fastness of top cap and casing in the battery production, the welding position accuracy, improve the efficiency and the precision of welding assembly, improve battery production quality.

Description

Welding equipment

Technical Field

The application relates to the technical field of welding equipment, in particular to welding equipment.

Background

In the production of lithium batteries, after a connecting sheet of a battery cell is welded to a top cover, the battery cell is installed in a shell, and then the top cover and the shell are required to be welded. The existing welding device is low in automation degree and low in production efficiency, the top cover and the shell are required to be pressed tightly during welding, phenomena of partial welding, insufficient welding, weak welding and the like are easily caused when the top cover and the shell are not accurately positioned or pressed tightly in place, waste products are produced, the performance of a battery is directly influenced due to the fact that welding positions are inconsistent and infirm, and the quality problem and the potential safety hazard of the battery are caused.

Therefore, at present, the development of a welding device is urgently needed, so that the welding firmness and the welding position accuracy of the top cover and the shell in the battery production are ensured, and the efficiency and the precision of welding assembly are improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a welding equipment, including mounting platform, slide set up in welding mechanism and a plurality of groups on the mounting platform can rotate set up in fixture on the mounting platform, a plurality of groups fixture is located on welding mechanism's the moving path, on the mounting platform for one side slip on the welding mechanism is provided with the detection mechanism who is used for detecting top cap and casing pressure equipment position. In the above implementation scheme, when the cell shell is fixed through the clamping mechanism, the top cover and the cell shell are pressed in place through the clamping mechanism, so that the top cover and the shell are welded in place, phenomena such as partial welding, insufficient welding and weak welding are prevented, and the welding quality of cell assembly is ensured. Through sliding and being provided with detection mechanism for one side on the welding mechanism, and then fixture with top cap and electric core casing pressure equipment back, detect the back that the top cap and casing pressure equipment target in place through detection mechanism, the welding mechanism of rethread opposite side welds, further ensures that top cap and casing pressure equipment target in place and welds and target in place, guarantees the welding fastness of top cap and casing, welding position accuracy in the battery production, improves the efficiency and the precision of welding assembly, guarantees battery production quality.

Preferably, the clamping mechanism comprises a first mounting plate detachably mounted on the mounting platform, a clamping assembly rotatably arranged on the first mounting plate and used for fixing the battery cell shell, and a support frame arranged on the first mounting plate, wherein a press-fitting assembly used for pressing the top cover and the shell is rotatably arranged on the support frame. After the battery core is loaded on the clamping assembly, the battery core shell is positioned and fixed through the clamping assembly, the battery core shell and the top cover on the clamping assembly are pressed in place through the pressing assembly on the supporting frame, the top cover and the shell are welded in place, phenomena such as partial welding, insufficient welding and weak welding are prevented, welding precision is improved, and welding quality of battery core assembly is guaranteed.

Preferably, a rotatable turntable is arranged on the first mounting plate, and the clamping assembly comprises a bearing assembly and a positioning assembly which are arranged on the turntable in a sliding manner, and a first reference assembly and a second reference assembly which are arranged opposite to the bearing assembly and the positioning assembly respectively. And then carry on spacingly through carrier assembly, first benchmark subassembly and locating component to electric core shell, press the fixed effect of fastening to electric core shell simultaneously, ensure that electric core can not electric core shell take place the skew in welding process, improve casing and top cap welded stability and welding precision.

Preferably, the press-fitting assembly comprises a pressing block and a first driving assembly for driving the pressing block to be pressed on the top cover; the pressing block and the first driving assembly are arranged on the supporting frame through a bearing seat. The briquetting sets up in telescopic cylinder's flexible end, compresses tightly in the top cap through telescopic cylinder drive briquetting, and then makes top cap and casing closely laminate, and then welds top cap and casing, guarantees the welding accuracy, and briquetting and first drive assembly pass through the bearing frame and set up on the support frame.

Preferably, the detection mechanism comprises a sliding plate slidably disposed on the mounting platform, a detector disposed on the sliding plate, and a second driving assembly for driving the sliding plate to move. Through the removal of second drive assembly drive slide, and then drive the detector and shift in position between each fixture, realize detecting top cap and casing on every fixture, ensure that top cap and casing pressure equipment target in place, and then ensure that top cap and casing welding target in place, prevent phenomena such as welding partially, rosin joint and weak point welding, improve welding precision, guarantee the welding quality of electric core equipment.

Preferably, the welding mechanism including slide set up in mounting platform's second mounting panel, drive the displacement drive assembly that the second mounting panel removed and set up in the welding ware on the second mounting panel, be provided with the drive on the second mounting panel the lift drive assembly that the welding ware goes up and down. The height position of the welder is driven by the lifting driving assembly, so that the top cover and the shell on the clamping assembly are welded by adjusting the focal length of the welder, the welding precision of the top cover and the shell is ensured, and the welding quality is improved.

Preferably, the positioning assembly includes a push block slidably disposed on the turntable, and a third driving assembly for driving the push block to abut against the cell casing. The ejector pad passes through slide rail slider structure slip setting on the revolving stage, and telescopic cylinder's flexible end is connected in the ejector pad, and then removes towards electric core casing through telescopic cylinder drive ejector pad for electric core casing keeps leaning on and leans on first benchmark subassembly, and then accomplishes electric core casing's location, ensures follow-up welding quality, guarantees welding position's precision.

Preferably, the first reference assembly comprises an adjusting block arranged on the turntable, and a reference block arranged on the adjusting block and abutted against two adjacent side surfaces of the cell shell. The reference block sets up on the regulating block, and then can realize the reference block high position of adjustment through the position of adjustment regulating block to confirm the high position of electric core casing, make things convenient for follow-up pressure equipment subassembly to guarantee welding quality with electric core casing and the accurate pressure equipment of top cap.

Preferably, a detector for detecting that the rotary table rotates in place is arranged on the first mounting plate. The position of the rotary table is detected through the detector, whether the rotary table rotates in place is detected, the position accuracy of the electric core shell and the top cover relative to the welding mechanism is ensured, the welding precision is improved, and the welding quality is ensured.

Preferably, the clamping mechanism further comprises a displacement driving assembly, and the displacement driving assembly drives the second mounting plate to move among the plurality of clamping mechanisms. The second mounting plate is driven to slide on the mounting platform through the displacement driving assembly, and then the position of the welding device on the second mounting plate is driven to be switched among the plurality of clamping mechanisms, so that the welding procedure of the electric cores on the plurality of clamping mechanisms is realized, and the welding efficiency is greatly improved.

Compared with the prior art, the beneficial effects of this application are: the welding mechanism is arranged on the mounting platform in a sliding manner, and a plurality of groups of clamping mechanisms are rotatably arranged on the mounting platform, after the battery core is fed, the battery core shell is fixed through the clamping mechanisms, the top cover and the battery core shell are pressed and mounted in place through the clamping mechanisms, the top cover and the shell on the clamping mechanisms are welded through the welding mechanisms arranged on the mounting platform, the top cover and the shell are ensured to be welded in place, phenomena such as welding deviation, cold welding and weak welding are prevented, the welding quality of battery core assembly is ensured, the detection mechanism for detecting the pressing and mounting positions of the top cover and the shell is arranged on the mounting platform in a sliding manner, after the top cover and the battery core shell are pressed and mounted by the clamping mechanisms, whether the top cover and the shell are pressed and mounted in place is detected through the detection mechanism, the welding of the top cover and the shell is further ensured to be in place, and meanwhile, the welding mechanism and the clamping mechanisms are both arranged on the mounting platform, the accuracy of the relative positions of the welding mechanism and the clamping mechanism is ensured, the welding firmness and the welding position accuracy of the top cover and the shell in battery production are ensured, the welding assembly efficiency and precision are improved, and the battery production quality is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present application or the prior art will be briefly described below. It should be apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained by those skilled in the art without inventive exercise.

FIG. 1 is a perspective view of a welding apparatus according to an embodiment of the present disclosure;

FIG. 2 is a front view of a welding apparatus of an embodiment of the present application;

FIG. 3 is a partial schematic view of a welding apparatus according to an embodiment of the present application;

fig. 4 is a partially enlarged view of a welding apparatus according to an embodiment of the present application.

Reference numerals

10. Mounting a platform; 20. a clamping mechanism; 21. a first mounting plate; 211. a detector; 22. a clamping assembly; 221. a positioning assembly; 2211. a push block; 2212. a third drive assembly; 222. a first reference assembly; 2221. an adjusting block; 2222. a reference block; 2223. a fixed block; 223. a load bearing assembly; 224. a second reference assembly; 225. a turntable; 23. a support frame; 24. pressing the assembly; 241. a first drive assembly; 242. briquetting; 25. a bearing seat; 30. a welding mechanism; 31. a welder; 32. a lift drive assembly; 33. a second mounting plate; 34. a displacement drive assembly; 40. a detection mechanism; 41. a detector; 42. a slide plate; 43. a second drive assembly.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the application. That is, in some embodiments of the present application, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present application are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in this application are for descriptive purposes only, not specifically referring to the order or sequence, nor are they intended to limit the application, but merely to distinguish components or operations described in the same technical terms, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

For further understanding of the contents, features and functions of the present invention, the following embodiments are exemplified in conjunction with the accompanying drawings and the following detailed description:

in the production of lithium cell, after the connection piece welding of electricity core to the top cap, pack into the casing with electricity core after, need weld top cap and casing, need compress tightly top cap and casing when the welding, when the location inaccuracy of top cap and casing or compress tightly not in place, produce easily and weld phenomenons such as partially, rosin joint and weak point welding.

In order to solve the above technical problems, this embodiment provides a welding device, as shown in fig. 1-2, fig. 1 is a perspective view of a welding device structure of this embodiment, fig. 2 is a front view of a welding device of this embodiment, which includes an installation platform 10, a welding mechanism 30 slidably disposed on the installation platform 10, and a plurality of sets of clamping mechanisms 20 rotatably disposed on the installation platform 10, a manipulator loads a battery cell to the clamping mechanisms 20, and further fixes the battery cell casing through the clamping mechanisms 20, and at the same time, presses and mounts the top cover and the battery cell casing in place through the clamping mechanisms 20, and then welds the top cover and the casing on the clamping mechanisms 20 through the welding mechanism 30 disposed on the installation platform 10, so as to ensure that the top cover and the casing are welded in place, prevent phenomena such as welding deviation, cold welding, weak welding, and the like, and ensure the welding quality of the battery cell assembly, and a detection device for detecting the press and mount positions of the top cover and the casing is slidably disposed on one side of the installation platform 10 with respect to the welding mechanism Mechanism 40, fixture 20 detects the back that puts in place through detection mechanism 40 after with top cap and electric core shell pressure equipment, the welding mechanism of rethread opposite side welds, further ensure that top cap and shell pressure equipment put in place and weld in place, and simultaneously, welding mechanism 30 and fixture 20 are all installed on mounting platform 10, ensure the degree of accuracy of welding mechanism 30 and fixture 20 relative position, guarantee the welding fastness of top cap and shell in battery production, the welding position accuracy, improve the efficiency and the precision of welding assembly, guarantee battery production quality.

Specifically, in order to fix and position the cell casing and the top cap, as shown in fig. 3, fig. 3 is a partial schematic view of the welding apparatus of this embodiment, the clamping mechanism 20 includes a first mounting plate 21 detachably mounted on the mounting platform 10, a clamping assembly 22 rotatably disposed on the first mounting plate 21 and used for fixing the cell casing, and a support frame 23 disposed on the first mounting plate 21, the cell is loaded by the manipulator and placed on the clamping assembly 22, wherein the clamping assembly 22 can be rotatably mounted on the first mounting plate 21 through a bearing and the like, and a press-fitting assembly 24 for pressing the top cap and the casing is rotatably disposed on the support frame 23. The battery cell is loaded onto the clamping assembly 22 through the manipulator, the battery cell shell is positioned and fixed through the clamping assembly 22, the battery cell shell and the top cover on the clamping assembly 22 are pressed and mounted in place through the pressing assembly 24 on the supporting frame 23, and therefore the welding of the top cover and the shell is ensured to be in place, phenomena such as partial welding, insufficient welding and weak welding are prevented, the welding precision is improved, and the welding quality of battery cell assembly is ensured.

Further, in above-mentioned scheme, the preparation material of mounting platform 10 is the marble, mounting platform 10 made through the marble can satisfy the demand of welding production high accuracy, and then all install on mounting platform 10 welding mechanism 30 and fixture 20, wherein, fixture 20 demountable installation is in the side of mounting platform 10, welding mechanism 30 slides and sets up the top surface at mounting platform 10, and then through installing welding mechanism 30 and fixture 20 simultaneously on mounting platform 10, ensure the degree of accuracy of relative position between welding mechanism 30 and the fixture 20, guarantee the welding position accuracy of top cap and casing in the battery production, improve welding assembly's efficiency and precision, guarantee battery production quality.

Further, in the above scheme, first mounting panel 21 passes through bolt fixed mounting in the side of mounting platform 10, when welding to not unidimensional electric core man-hour, can realize dismantling clamping component 22 through dismantling first mounting panel 21, realize whole dismouting, it is high to realize changing convenient compatibility, can, according to the condition of actual production, install a plurality of fixture 20 on mounting platform 10, correspondingly set up corresponding welding mechanism 30 on mounting platform 10, set up the clamping component 22 of different models on every fixture 20, and then realize centre gripping and the electric core of fixed different models, thereby weld not unidimensional electric core simultaneously, improve welded efficiency.

Further, in the above-mentioned solution, the clamping assembly 22 is rotatably mounted on the first mounting plate 21 through a bearing and the like, and a servo motor is disposed on the other side of the mounting platform 10 opposite to the first mounting plate 21, and is connected to the clamping assembly 22 through the servo motor, so as to drive the clamping assembly 22 to rotate relative to the first mounting plate 21.

Specifically, in order to fix and position the cell casing, a rotatable turntable 225 is disposed on the first mounting plate 21, as shown in fig. 4, fig. 4 is a partially enlarged view of the welding apparatus of this embodiment, and the clamping assembly 22 includes a bearing assembly 223 and a positioning assembly 221 slidably disposed on the turntable 225, and a first reference assembly 222 and a second reference assembly 224 disposed opposite to the bearing assembly 223 and the positioning assembly 221, respectively. Bearing component 223 is used for bearing electric core, first benchmark subassembly 222 is located electric core top, second benchmark subassembly 224 and locating component 221 are located the opposite both sides of electric core, second benchmark subassembly 224 is used for carrying out the position spacing to the side of first benchmark subassembly 222, ensure the location benchmark of first benchmark subassembly 222 left and right directions, the electric core casing passes through manipulator material loading to the bearing component 223 back, through bearing component 223 slip lift, make first benchmark subassembly 222 support and lean on the top surface and a side of electric core casing, and then locating component 221 promotes electric core from another side, and then through bearing component 223, first benchmark subassembly 222 and locating component 221 carry out spacing to electric core, locating component 221 has the effect of pressure fastening to the electric core casing simultaneously, ensure that electric core can not take place the position skew in welding process, improve welded stability and welding precision. Wherein the bearing component 223 includes a bearing platform and a driving member for driving the bearing platform to ascend and descend, and after the battery cell is placed on the bearing platform, the bearing platform is driven by the driving member to ascend and abut against the first reference component 222, so as to position the battery cell.

Further, in the above solution, as shown in fig. 4, the positioning assembly 221 includes a push block 2211 slidably disposed on the turntable 225, and a third driving assembly 2212 for driving the push block 2211 to abut against the cell casing. Third drive assembly 2212 can be telescopic cylinder, and ejector pad 2211 slides through slide rail slider structure and sets up on revolving stage 225, and telescopic cylinder's flexible end is connected in ejector pad 2211, and then moves towards electric core casing through telescopic cylinder drive ejector pad 2211 for electric core casing keeps leaning on and leans on first benchmark subassembly 222, and then accomplishes electric core casing's location, ensures follow-up welding quality, guarantees welding position's precision.

Further, in the above solution, as shown in fig. 4, the first reference assembly 222 includes an adjusting block 2221 disposed on the turntable 225, and a reference block 2222 disposed on the adjusting block 2221 and abutted against two adjacent side surfaces of the cell casing. Install fixed block 2223 on revolving stage 225, regulating block 2221 is connected with fixed block 2223 through structures such as waist shape hole, and then can adjust the position of regulating block 2221 on fixed block 2223, reference block 2222 sets up on regulating block 2221, and then can realize the reference block 2222 height position of adjustment through the position of adjusting block 2221 to confirm the high position of electricity core casing, make things convenient for follow-up pressure equipment subassembly 24 to press equipment electricity core casing and top cap accuracy, guarantee welding quality.

After the battery cell shell is positioned, in order to realize press-fitting of the battery cell shell and the top cover, the press-fitting assembly 24 comprises a press block 242 and a drive press block 242, wherein the drive press block 242 is pressed against a first drive assembly 241 of the top cover, the first drive assembly 241 can be a telescopic cylinder, the press block 242 is arranged at a telescopic end of the telescopic cylinder, the press block 242 is pressed against the top cover through the telescopic cylinder, so that the top cover and the shell are tightly attached, the top cover and the shell are welded, the welding accuracy is ensured, the press block 242 and the first drive assembly 241 are arranged on the support frame 23 through the bearing seat 25, and the press block 242 is rotated along with the rotation of the battery cell.

Further, after the press-fitting assembly 24 tightly press-fits the top cover and the housing, whether the press-fitting is in place is detected by the detection mechanism 40, for this purpose, the detection mechanism 40 includes a slide plate 42 slidably disposed on the mounting platform 10, a detector 41 disposed on the slide plate 42, and a second driving assembly 43 for driving the slide plate 42 to move, where the detector 41 may be a camera and detect visually, the second driving assembly 43 may be a motor screw structure, the detection mechanism 40 is disposed below the clamping mechanisms 20, the slide plate 42 is driven by the second driving assembly 43 to move on the mounting platform 10, and then the detector 41 is driven to shift between the clamping mechanisms 20, so as to detect the top cover and the housing on each clamping mechanism 20, ensure that the top cover and the housing are in place in press-fitting, and further ensure that the top cover and the housing are welded in place, and prevent phenomena such as welding deviation, insufficient welding, weak welding, etc., the welding precision is improved, and the welding quality of the battery cell assembly is guaranteed.

In the above solution, in order to weld the top cover and the shell on each clamping mechanism 20, a welding mechanism 30 is arranged on the mounting platform 10 in a sliding way, the welding mechanism 30 comprises a second mounting plate 33 arranged on the mounting platform 10 in a sliding way, a displacement driving component 34 driving the second mounting plate 33 to move, and a welder 31 arranged on the second mounting plate 33, wherein, the displacement driving component 34 can be a motor screw structure to drive the second mounting plate 33 to move on the mounting platform 10, the second mounting plate 33 is driven to slide on the mounting platform 10 by the displacement driving assembly 34, thereby driving the welding device 31 on the second mounting plate 33 to switch positions among the plurality of clamping mechanisms 20, thereby realizing the welding process of the battery cores on the plurality of clamping mechanisms 20, greatly improving the welding efficiency, the second mounting plate 33 is provided with an elevation drive unit 32 for driving the welder 31 to ascend and descend. After the displacement driving assembly 34 drives the welding device 31 to be in place, the height position of the welding device 31 is driven by the lifting driving assembly 32, so that the focal length of the welding device 31 is adjusted, the welding precision of the top cover and the shell is ensured, and the welding quality is improved.

After welding one side of the battery cell shell and the top cover, the other side of the shell and the top cover needs to be continuously welded, and for this reason, the battery cell shell and the top cover need to be rotated, and further, in the above scheme, the clamping assembly 22 is rotatably mounted on the first mounting plate 21 through components such as bearings, specifically, the rotatable turntable 225 is arranged on the first mounting plate 21, the clamping assembly 22 is mounted on the turntable 225, a servo motor is arranged on the other side of the mounting platform 10, which is opposite to the first mounting plate 21, and is connected with the turntable 225 through the servo motor, and the motor drives the turntable 225 to rotate so as to drive the clamping assembly 22 to rotate relative to the first mounting plate 21. Meanwhile, the pressing block 242 and the first driving assembly 241 are arranged on the supporting frame 23 through the bearing seat 25, and further when the clamping assembly 22 rotates, because the pressing block 242 presses the top cover and the shell on the clamping assembly 22, and further the pressing block 242 and the first driving assembly 241 rotate synchronously with the clamping assembly 22, and further full welding of the battery cell shell and the top cover is achieved, and welding efficiency is improved.

Further, in the above scheme, a detector 211 for detecting that the turntable 225 rotates in place is arranged on the first mounting plate 21, the detector 211 may be a position sensor, and the detector 211 detects the position of the turntable 225, so as to detect whether the turntable 225 rotates in place, and ensure the position accuracy of the cell shell and the top cover relative to the welding mechanism 30, thereby improving the welding precision and ensuring the welding quality.

In summary, in one or more embodiments of the present application, a welding mechanism and a plurality of sets of clamping mechanisms rotatably disposed on a mounting platform are slidably disposed on the mounting platform, after a battery cell is loaded, a battery cell casing is fixed by the clamping mechanisms, a top cover and the battery cell casing are pressed and mounted in place by the clamping mechanisms, then the top cover and the casing on the clamping mechanisms are welded by the welding mechanism disposed on the mounting platform, so as to ensure that the top cover and the casing are welded in place, prevent phenomena such as welding deviation, insufficient welding and weak welding, and ensure the welding quality of battery cell assembly, a detection mechanism for detecting the press-mounting positions of the top cover and the casing is slidably disposed on one side of the mounting platform relative to the welding mechanism, after the top cover and the battery cell casing are pressed and mounted in place by the detection mechanism, and then welding is performed by the welding mechanism on the other side, the top cover and the shell are further guaranteed to be pressed and welded in place, meanwhile, the welding mechanism and the clamping mechanism are both installed on the installation platform, the accuracy of the relative positions of the welding mechanism and the clamping mechanism is guaranteed, the welding firmness and the welding position accuracy of the top cover and the shell in battery production are guaranteed, the welding assembly efficiency and precision are improved, and the battery production quality is guaranteed.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. The utility model provides a welding equipment for welding top cap and electric core casing, its characterized in that: including mounting platform (10), slide set up in welding mechanism (30) on mounting platform (10) and a plurality of groups rotatable set up in fixture (20) on mounting platform (10), a plurality of groups fixture (20) are located on the moving path of welding mechanism (30), mounting platform (10) for one side slip on the welding mechanism is provided with detection mechanism (40) that are used for detecting top cap and casing pressure equipment position.

2. The welding apparatus of claim 1, wherein: the clamping mechanism (20) comprises a first mounting plate (21) detachably mounted on the mounting platform (10), a clamping assembly (22) rotatably arranged on the first mounting plate (21) and used for fixing the battery cell shell, and a support frame (23) arranged on the first mounting plate (21), wherein a press-fitting assembly (24) used for pressing the top cover and the shell is rotatably arranged on the support frame (23).

3. The welding apparatus of claim 2, wherein: the first mounting plate (21) is provided with a rotatable turntable (225), and the clamping assembly (22) comprises a bearing assembly (223) and a positioning assembly (221) which are arranged on the turntable (225) in a sliding mode, and a first reference assembly (222) and a second reference assembly (224) which are arranged opposite to the bearing assembly (223) and the positioning assembly (221) respectively.

4. The welding apparatus of claim 2, wherein: the press-fitting assembly (24) comprises a pressing block (242) and a first driving assembly (241) for driving the pressing block (242) to be pressed on the top cover; the pressing block (242) and the first driving assembly (241) are arranged on the supporting frame (23) through a bearing seat (25).

5. The welding apparatus of claim 1, wherein: the detection mechanism (40) comprises a sliding plate (42) arranged on the mounting platform (10) in a sliding mode, a detector (41) arranged on the sliding plate (42), and a second driving assembly (43) for driving the sliding plate (42) to move.

6. The welding apparatus of claim 1, wherein: welding mechanism (30) including slide set up in second mounting panel (33) of mounting platform (10) and set up in welding ware (31) on second mounting panel (33), be provided with the drive on second mounting panel (33) lifting drive subassembly (32) that welding ware (31) go up and down.

7. The welding apparatus of claim 3, wherein: the positioning assembly (221) comprises a push block (2211) arranged on the rotary table (225) in a sliding mode, and a third driving assembly (2212) for driving the push block (2211) to abut against the battery cell shell.

8. The welding apparatus of claim 3, wherein: the first reference assembly (222) comprises an adjusting block (2221) arranged on the rotary table (225) and a reference block (2222) arranged on the adjusting block (2221) and abutted against two adjacent side faces of the cell shell.

9. The welding apparatus of claim 3, wherein: the first mounting plate (21) is provided with a detector (211) for detecting that the rotary table (225) rotates in place.

10. The welding apparatus of claim 6, wherein: the clamping mechanism further comprises a displacement driving assembly (34), wherein the displacement driving assembly (34) drives the second mounting plate (33) to move among the plurality of clamping mechanisms (20).