Welding device
By designing a welding device with clamping, rotating, and pressing modules, the inconvenience and quality problems of welding the cell housing and the top cover's radius (R-angle) were solved, achieving convenient and efficient radius welding.
Patent Information
- Application Number
- CN202423258942.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing welding methods cannot weld the radius (R) of the cell casing and the top cover separately, which is inconvenient to operate and cannot guarantee the welding quality of the radius.
A welding device was designed, including a clamping module, a rotating module, and a pressing module. The clamping module fixes the battery cell, the rotating module drives the battery cell to rotate, and the pressing module keeps the battery cell fixed to the top cover. The welding device moves along the side or drives the battery cell to rotate to complete the R-corner welding.
The process of welding the R-angle between the battery cell casing and the top cover is simple, ensuring consistency in the penetration depth and width of the R-angle, and improving the welding quality.
Smart Images
Figure CN223947204U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a welding set. BACKGROUND
[0002] In the assembling process of the battery cell, the battery cell shell and the top cover need to be welded and fixed. For the battery cell shell with a steel shell, the penetration welding is usually adopted when welding the steel shell and the top cover. In the welding process of the steel shell and the top cover, the long side and the short side of the steel shell need to be welded respectively, and the R angle at the connection between the long side and the short side also needs to be welded. However, the current welding scheme cannot weld the R angle alone, and the welding of the R angle can only be realized by extending the welding distance when welding the long side and the short side respectively, which is not only inconvenient to operate, but also cannot guarantee the welding quality of the R angle. SUMMARY
[0003] The utility model provides a kind of welding set, R angle welding when battery cell shell and top cover can be conveniently realized, and the welding quality of R angle can also be guaranteed.
[0004] The utility model provides a kind of welding set, it includes clamping module, rotating module, pressure module and welding equipment;
[0005] The clamping module is used to clamp the battery cell, and the battery cell includes a battery cell shell and a top cover. The top cover and the battery cell shell are in a state to be welded. When the clamping module clamps the battery cell, the top of the battery cell shell and the top cover are exposed to the clamping module.
[0006] The pressure module includes a pressure plate and a moving assembly. The pressure plate is arranged on the side of the top cover away from the battery cell shell. The moving assembly is used to drive the pressure plate to move towards the battery cell, so that the pressure plate abuts against the side surface of the top cover away from the battery cell shell. The moving assembly is also used to drive the pressure plate to move away from the battery cell, so that the pressure plate is separated from the surface of the top cover.
[0007] The rotating module is used to drive the whole of the clamping module and the battery cell to rotate around a first axis. The extension direction of the first axis is parallel to the arrangement direction of the battery cell shell and the top cover.
[0008] The welding equipment is used to weld the top cover and the battery cell shell. During the welding process of the welding equipment, the welding equipment moves along the extension direction of the side edge of the battery cell to weld the top cover and the battery cell shell, or the rotating module drives the battery cell to rotate around the first axis relative to the welding equipment, so that the welding equipment welds the R angle between the adjacent two side edges of the battery cell.
[0009] The welding device provided by the utility model is provided with a clamping module for clamping the battery cell to ensure that the position of the battery cell is unchanged during welding. The welding device is provided with a rotating module for driving the battery cell to rotate so as to make the different sides of the battery cell face the welding equipment, thereby enabling the welding equipment to weld the different sides of the battery cell. When the R angle of the connection between the adjacent two sides needs to be welded, the welding equipment can be kept stationary, and the rotating module is used to drive the battery cell to rotate, thereby enabling the welding equipment to weld the R angle of the battery cell. When the R angle is welded, the battery cell is rotated to complete the welding of the R angle at one time, and the operation is convenient. Moreover, since the welding is completed at one time, the penetration and width of the R angle can be ensured to be consistent, thereby ensuring the welding quality of the R angle. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a structural schematic view of the welding device in the embodiment of the utility model;
[0011] Figure 2 It is a structural schematic view of the clamping module in the embodiment of the utility model;
[0012] Figure 3 It is a structural schematic view of the welding device from another angle in the embodiment of the utility model;
[0013] Figure 4 It is a structural schematic view of the pressing module in the embodiment of the utility model;
[0014] Figure 5 It is a state structural schematic view between the ejector rod and the battery cell in the embodiment of the utility model.
[0015] In the drawings:
[0016] 10-battery cell; 11-battery cell shell; 12-top cover; 100-clamping module; 110-carrier plate; 120-first clamping block; 130-second clamping block; 140-first sliding rail; 150-second sliding rail; 200-rotating module; 210-first rotating motor; 300-pressing module; 310-pressing plate; 320-moving assembly; 321-guide rail; 322-mounting plate; 330-rotating assembly; 331-rotating shaft; 332-second rotating motor; 400-ejector rod. DETAILED DESCRIPTION
[0017] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.
[0018] Reference Figure 1 The welding device in the embodiment of the present application can include a clamping module 100, a rotating module 200, a pressing module 300, and a welding device (not shown in the figure), wherein the clamping module 100, the rotating module 200, and the pressing module 300 can be used to fix the battery cell 10 to assist the welding device in welding the battery cell 10.
[0019] The welding device in the embodiment can be used for welding the square battery cell 10. Specifically, the battery cell 10 to be welded can include a battery cell shell 11 and a top cover 12, and the top cover 12 needs to be welded to the top of the battery cell shell 11. Before welding the battery cell 10, the battery cell shell 11 and the top cover 12 are two separate structures, or the battery cell shell 11 and the top cover 12 are connected by some welding points, at this time, the top cover 12 and the battery cell shell 11 are not completely fixed.
[0020] Reference Figure 1 and Figure 2 The clamping module 100 can be used to clamp the battery cell 10. Specifically, the clamping module 100 can include a carrier plate 110, two oppositely arranged first clamping blocks 120, and two oppositely arranged second clamping blocks 130, and the first clamping blocks 120 and the second clamping blocks 130 are arranged on the carrier plate 110. In specific implementation, the carrier plate 110 is arranged with a large face of the first clamping block 120 and the second clamping block 130, which can be arranged perpendicular to the vertical direction, so as to realize the reasonable arrangement of the overall structure of the welding device.
[0021] When the clamping module 100 clamps the battery cell 10, the two first clamping blocks 120 can be used to clamp the two large faces of the battery cell shell 11, and the two second clamping blocks 130 can be used to clamp the two sides of the battery cell shell 11. At this time, the four surfaces of the battery cell shell 11 are respectively resisted by the two first clamping blocks 120 and the two second clamping blocks 130, so as to realize the relative fixation between the battery cell shell 11 and the clamping module 100.
[0022] It is worth noting that when the battery cell 10 is fixed to the clamping module 100, one end of the battery cell shell 11 connected to the top cover 12 is arranged away from the carrier plate 110, so that the top of the battery cell shell 11 and the top cover 12 can be exposed to the first clamping block 120 and the second clamping block 130. That is, the welding part of the battery cell 10 is exposed outside the first clamping block 120 and the second clamping block 130, so as to facilitate the welding of the battery cell 10 by the welding device.
[0023] Continue to refer to Figure 1The pressing module 300 is arranged on the side of the battery cell 10 away from the carrier plate 110, and the pressing module 300 can include a pressing plate 310 and a moving assembly 320. The pressing plate 310 is connected to the moving assembly 320, and the moving assembly 320 can be used to drive the pressing plate 310 to move close to or away from the battery cell 10. Since the pressing plate 310 is located on the side of the top cover 12 away from the battery cell shell 11, when the moving assembly 320 drives the pressing plate 310 to move close to the battery cell 10, the pressing plate 310 can be brought into abutment with the surface of the top cover 12, so as to drive the top cover 12 to abut against the battery cell shell 11. In the subsequent welding process, the top cover 12 and the battery cell shell 11 remain relatively fixed, thereby ensuring the welding quality.
[0024] When the welding of the battery cell shell 11 and the top cover 12 is completed, the moving assembly 320 can also drive the pressing plate 310 to move away from the battery cell 10, so that the pressing plate 310 can be separated from the surface of the top cover 12. At this time, the battery cell 10 after welding can be removed from the clamping module 100, and then the next battery cell to be welded can be replaced.
[0025] The rotating module 200 can be used to drive the whole clamping module 100 and the battery cell 10 to rotate around the first axis. Here, the first axis can be understood as an axis parallel to the arrangement direction of the battery cell shell 11 and the top cover 12. The welding device can include a welding head, for example, which can perform laser welding between the battery cell shell 11 and the top cover 12 to achieve the fixation between the battery cell shell 11 and the top cover 12.
[0026] In this embodiment, since the battery cell 10 is of a square structure, the top surface of the battery cell shell 11 has four sides, and correspondingly, the top cover 12 also has four sides. During welding, the four sides of the battery cell shell 11 need to be welded and fixed with the four sides of the top cover 12, respectively. Based on this, the welding device needs to weld each side of the battery cell shell 11 when welding the battery cell shell 11 and the top cover 12. In actual implementation, the welding device can be arranged at a position opposite to the large surface or the side surface of the battery cell 10. At this time, the welding device can weld the side of the battery cell 10 opposite to the welding device, and in this process, the welding device can move along the extension direction of the welded side to complete the welding of the side.
[0027] After the welding of one side is completed, the rotating module 200 can be used to drive the battery cell 10 to rotate 90° around the first axis, so that another side of the battery cell shell 11 is opposite to the welding device. Then, the welding device moves along the extension direction of the welded side again, thereby completing the welding of the side. In this way, the welding of each side between the battery cell shell 11 and the top cover 12 can be completed.
[0028] Furthermore, the welding equipment in this embodiment can also be used to weld the R-angle connecting two adjacent sides. In specific implementation, the welding equipment can be positioned directly opposite one end of the R-angle, and the welding equipment can remain stationary. During this process, the rotating module 200 drives the battery cell 10 to rotate relative to the welding equipment around the first axis, so that the welding equipment completes the welding of the R-angle during the rotation of the battery cell 10.
[0029] Understandably, in this embodiment, during the rotation of the battery cell 10 relative to the welding equipment using the rotating module 200, the R-corner welding can be achieved directly in one step. Compared to the traditional method of extending the welding distance of two adjacent sides separately, the R-corner welding method in this embodiment is simpler and easier to operate. In addition, since the R-corner is welded in one go, the consistency of the R-corner's penetration depth and width can be guaranteed, which is beneficial to ensuring the welding quality of the R-corner.
[0030] As mentioned earlier, before welding the battery cell 10, the battery cell housing 11 and the top cover 12 can be two separate structures. To facilitate alignment of the top cover 12 with the battery cell housing 11, a positioning structure can be provided on the inner wall of the battery cell housing 11, allowing the top cover 12 to be aligned with the battery cell housing 11. When the pressure plate 310 is subsequently pressed onto the surface of the top cover 12, it not only achieves relative fixation between the top cover 12 and the battery cell housing 11 but also assists in further positioning between the top cover 12 and the battery cell housing 11, thus pressing the top cover 12 and the battery cell housing 11 together.
[0031] Alternatively, before welding the battery cell 10, when connecting the battery cell housing 11 and the top cover 12 with some solder joints, the solder joints can be distributed on each side of the battery cell 10. This pre-fixes the battery cell housing 11 and the top cover 12, preventing the top cover 12 from rotating relative to the battery cell housing 11. When the pressure plate 310 is pressed onto the surface of the top cover 12, the top cover 12 and the battery cell housing 11 are pressed tightly together, which facilitates subsequent welding work.
[0032] In some embodiments, such as Figure 2 As shown, the two first clamping blocks 120 can move closer to or further apart from each other to change the distance between them. Therefore, when the battery cell 10 needs to be placed between the two first clamping blocks 120, the two first clamping blocks 120 can be moved further apart firstly to increase the distance between them. After the battery cell 10 is in place, the two first clamping blocks 120 can be moved closer together to clamp the two large surfaces of the battery cell housing 11.
[0033] Based on this, at least one first clamping block 120 can move relative to the carrier plate 110 along the arrangement direction of the two first clamping blocks 120, so as to Figure 2For example, one of the first clamping blocks 120 can be fixedly connected to the carrier plate 110, and the other first clamping block 120 can be movably mounted on the carrier plate 110 relative to the carrier plate 110. The carrier plate 110 can be provided with a first sliding rail 140 extending along the arrangement direction of the two first clamping blocks 120, and the first clamping blocks 120 can be mounted on the first sliding rail 140 through sliding blocks, so that the first clamping blocks 120 can move relative to the first sliding rail 140.
[0034] In some optional embodiments, the carrier plate 110 can further be provided with a first limiting block (not shown in the figure), which can be used to limit the stroke of the movement of the first clamping blocks 120 relative to the first sliding rail 140. For example, when the first clamping blocks 120 move to abut against the first limiting block, the spacing between the two first clamping blocks 120 is just suitable for clamping the two large faces of the battery cell shell 11, so that the clamping force of the first clamping blocks 120 acting on the battery cell shell 11 can be prevented from being too large to damage the battery cell shell 11.
[0035] Similarly, continuing to refer to Figure 2 , the two second clamping blocks 130 can also move closer to each other or move away from each other to change the spacing between the two second clamping blocks 130. Thus, when the battery cell 10 needs to be placed between the two second clamping blocks 130, the two second clamping blocks 130 can be first moved away from each other to increase the spacing between the two second clamping blocks 130. After the battery cell 10 is placed in place, the two second clamping blocks 130 can be moved closer to each other so as to be able to clamp the two side faces of the battery cell shell 11.
[0036] Based on this, at least one of the second clamping blocks 130 can move relative to the carrier plate 110 along the arrangement direction of the two second clamping blocks 130, so as to Figure 2 For example, one of the second clamping blocks 130 can be fixedly connected to the carrier plate 110, and the other second clamping block 130 can be movably mounted on the carrier plate 110 relative to the carrier plate 110. The carrier plate 110 can be provided with a second sliding rail 150 extending along the arrangement direction of the two second clamping blocks 130, and the second clamping blocks 130 can be mounted on the second sliding rail 150 through sliding blocks, so that the second clamping blocks 130 can move relative to the second sliding rail 150.
[0037] In some optional embodiments, the carrier plate 110 can further be provided with a second limiting block, which can be used to limit the stroke of the movement of the second clamping blocks 130 relative to the second sliding rail 150. For example, when the second clamping blocks 130 move to abut against the second limiting block, the spacing between the two second clamping blocks 130 is just suitable for clamping the two side faces of the battery cell shell 11, so that the clamping force of the second clamping blocks 130 acting on the battery cell shell 11 can be prevented from being too large to damage the battery cell shell 11.
[0038] As Figure 2As shown, two first clamping blocks 120 and two second clamping blocks 130 are arranged on the four sides of the battery cell shell 11 respectively. When the battery cell 10 is fixed with the clamping module, if one of the first clamping blocks 120 is located at the bottom, the battery cell 10 can be placed on the side of the first clamping block 120 facing the second clamping block 130. At this time, the first clamping block 120 can support the battery cell 10, and then the other clamping block is driven to move, and at the same time, the second clamping block 130 is also driven to move. Under the joint action of the first clamping block 120 and the second clamping block 130, the battery cell 10 can be adjusted to the preset position, and the clamping effect on the battery cell 10 can be achieved.
[0039] Before the welding of the battery cell 10 is completed, the first clamping block 120 and the second clamping block 130 are relatively fixed with the carrier plate 110. After the welding of the battery cell 10 is completed, the first clamping block 120 and the second clamping block 130 are moved to release the clamping state of the battery cell 10, so that the battery cell 10 can be taken out.
[0040] Further, as described above, the rotating module 200 can be used to drive the overall rotation of the clamping module 100 and the battery cell 10. The rotating module 200 can be in transmission connection with the carrier plate 110, so that the rotating module 200 can drive the carrier plate 110 to rotate around the first axis. In this process, since the first clamping block 120 and the second clamping block 130 are relatively fixed with the carrier plate 110, the battery cell 10 is clamped between the first clamping block 120 and the second clamping block 130. During the rotation of the carrier plate 110, the battery cell 10 can be driven to rotate synchronously.
[0041] As an optional embodiment, referring to Figure 1 and Figure 3 , the rotating module 200 can include a first rotating motor 210, which can be arranged on the side of the carrier plate 110 away from the battery cell 10. The output shaft of the first rotating motor 210 is in rotation connection with the carrier plate 110, so that the carrier plate 110 can be driven to rotate around the first axis by the first rotating motor 210.
[0042] In some embodiments, the welding device in the present embodiment can further include an ejection module, which can be used to push the battery cell 10 to move when the battery cell 10 is placed in the clamping module 100 but has not been clamped by the clamping module 100, so that the battery cell 10 moves away from the carrier plate 110. In this process, since the part where the battery cell shell 11 is connected with the top cover 12 is located on the side of the battery cell 10 away from the carrier plate 110, by pushing the battery cell 10 to move, it can be ensured that when the battery cell 10 is clamped by the first clamping block 120 and the second clamping block 130, the part where the battery cell shell 11 is welded with the top cover 12 is exposed to the first clamping block 120 and the second clamping block 130, so as to ensure the accuracy of the welding position.
[0043] Specifically, referring to Figure 4 , the ejection module can include an ejector rod 400 and an ejection driving assembly (not shown in the figure), wherein the ejector rod 400 is arranged in the direction perpendicular to the carrier plate 110, and the ejector rod 400 can move relative to the carrier plate 110 in the direction perpendicular to the carrier plate 110 to push the battery cell 10 to move. The ejection driving assembly can be arranged on the side of the carrier plate 110 away from the battery cell 10, and the ejection driving assembly can be in transmission connection with the ejector rod 400 to drive the ejector rod 400 to move in the direction perpendicular to the carrier plate 110.
[0044] In combination with the arrows in Figure 1 and Figure 4 , Figure 4 , the moving direction of the ejector rod 400 can be understood. After the battery cell 10 is placed on the first clamping block 120, the ejection driving assembly can be used to drive the ejector rod 400 to move towards the battery cell 10, so that the ejector rod 400 pushes the battery cell 10 to move away from the carrier plate 110. After the work of pushing the battery cell 10 is completed, the ejection driving assembly can also drive the ejector rod 400 to move away from the battery cell 10, so that the ejector rod 400 is separated from the surface of the battery cell 10. Subsequently, the first clamping block 120 and the second clamping block 130 can be driven to move, so that the first clamping block 120 and the second clamping block 130 cooperate to clamp the battery cell 10.
[0045] In specific implementation, the ejection driving assembly can be, for example, a motor or a pneumatic cylinder, and the present embodiment does not limit this.
[0046] In some embodiments, before the welding of the battery cell shell 11 and the top cover 12 is completed, the pressing plate 310 can be always pressed against the top cover 12 to ensure the relative fixation between the top cover 12 and the battery cell shell 11. As described above, the rotating module 200 can drive the carrier plate 110 to rotate to drive the battery cell 10 to rotate, and in combination with Figure 1 , the pressing module 300 can further include a rotating assembly 330, which can be used to drive the pressing plate 310 to rotate synchronously with the battery cell 10 around the first axis. In this way, during the rotation of the battery cell 10, the pressing plate 310 rotates together, so that the pressing plate 310 and the top cover 12 can always be in a relatively fixed state, which facilitates the effect that the pressing plate 310 is always pressed against the top cover 12.
[0047] As an optional implementation, in combination with Figure 1 and Figure 5 , the rotating assembly 330 can include a rotating shaft 331 and a second rotating motor 332. One end of the rotating shaft 331 can be fixedly connected to the side of the pressing plate 310 away from the battery cell 10, and the other end of the rotating shaft 331 can be in transmission connection with the second rotating motor 332, so that the second rotating motor 332 transmits power to the rotating shaft 331, and then drives the pressing plate 310 to rotate by means of the rotating shaft 331.
[0048] In the embodiment, the axis of the rotating shaft 331 can be arranged coincident with the first axis, when the second rotating motor 332 drives the pressing plate 310 to rotate through the rotating shaft 331, not only the pressing plate 310 can be always pressed on the surface of the top cover 12, but also the relative fixation between the pressing plate 310 and the top cover 12 can be ensured. In this way, the fixation effect between the battery cell shell 11 and the top cover 12 can be better during the rotation of the battery cell 10, and the welding effect can be ensured.
[0049] Further, in order to facilitate the movement of the pressing plate 310 relative to the battery cell 10, the moving assembly 320 in the embodiment can include a guide rail 321, the extending direction of the guide rail 321 is parallel to the arrangement direction of the pressing plate 310 and the battery cell 10. An installation plate 322 is arranged on the guide rail 321, the installation plate 322 can be connected with the guide rail 321 through a sliding block, so that the installation plate 322 can move along the extending direction of the guide rail 321 relative to the guide rail 321. The pressing plate 310 and the rotating assembly 330 can be arranged on the installation plate 322, when the installation plate 322 moves relative to the guide rail 321, the pressing plate 310 and the rotating assembly 330 can be driven to move synchronously, so that the pressing plate 310 can move close to or away from the battery cell 10.
[0050] In addition, the moving assembly 320 can also include a pneumatic cylinder or a motor, so as to drive the installation plate 322 to move relative to the guide rail 321, so that the pressing plate 310 and the rotating assembly 330 can be kept stable during the movement.
[0051] The welding device in the embodiment of the utility model, set up rotating module and clamping module, clamping module is used for clamping battery cell, rotating module is used for driving battery cell rotation. When the battery cell shell and the top cover are welded, after one side edge welding is completed, the rotating module is used for driving the battery cell to rotate, so that the welding equipment carries out welding to the other side edge, and this cycle is used for completing the welding of each side edge. When the R angle of the connection between the adjacent two side edges is welded, the welding equipment can be kept stationary, the rotating module is used for driving the battery cell to rotate, so that the welding equipment can complete the welding of the R angle at one time. The welding device can not only facilitate the welding of the R angle, but also facilitate the guarantee of the welding quality of the R angle.
[0052] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the claims of the utility model and the equivalent technologies thereof, the utility model also intends to include these modifications and variations.
Claims
1. A welding device, characterized in that, The device comprises a clamping module, a rotating module, a pressing module and a welding device. The clamping module is used for clamping a battery cell, the battery cell comprises a battery cell shell and a top cover, the top cover and the battery cell shell are in a state to be welded, when the clamping module clamps the battery cell, the top of the battery cell shell and the top cover are exposed from the clamping module. The pressing module comprises a pressing plate and a moving assembly, the pressing plate is arranged on the side of the top cover away from the battery cell shell, the moving assembly is used for driving the pressing plate to move towards the battery cell, so that the pressing plate abuts against the side surface of the top cover away from the battery cell shell, and the moving assembly is also used for driving the pressing plate to move away from the battery cell, so that the pressing plate is separated from the surface of the top cover. The rotating module is used for driving the whole of the clamping module and the battery cell to rotate around a first axis, the extending direction of the first axis is parallel to the arrangement direction of the battery cell shell and the top cover. The welding device is used for welding the top cover and the battery cell shell, wherein, during the welding process of the welding device, the welding device moves relative to the battery cell along the extending direction of the side edge of the welding to weld the top cover and the battery cell shell, or the rotating module drives the battery cell to rotate around the first axis relative to the welding device, so that the welding device welds the R angle connected between two adjacent side edges of the battery cell.
2. The welding device of claim 1, wherein, The clamping module comprises a carrier plate, two first clamping blocks arranged oppositely and two second clamping blocks arranged oppositely, the first clamping blocks and the second clamping blocks are arranged on the carrier plate. The two first clamping blocks are used for clamping two large faces of the battery cell shell, and the two second clamping blocks are used for clamping two side faces of the battery cell shell.
3. The welding device of claim 2, wherein, Among the two first clamping blocks, at least one first clamping block can move relative to the carrier plate along the arrangement direction of the two first clamping blocks, so as to change the distance between the two first clamping blocks.
4. The welding device of claim 2, wherein, Among the two second clamping blocks, at least one second clamping block can move relative to the carrier plate along the arrangement direction of the two second clamping blocks, so as to change the distance between the two second clamping blocks.
5. The welding device of claim 2, wherein, The rotating module comprises a first rotating motor, the output shaft of the first rotating motor is in transmission connection with the carrier plate, and the first rotating motor is used for driving the carrier plate to rotate around the first axis.
6. The welding device of claim 2, wherein, The device further comprises an ejection module, the ejection module comprises an ejector rod, the ejector rod can move relative to the carrier plate along the direction perpendicular to the carrier plate, so as to push the battery cell placed on the clamping module to move away from the carrier plate.
7. The welding device of claim 6, wherein, The ejector rod is arranged in the carrier plate along the direction perpendicular to the carrier plate. The ejection module further comprises an ejection driving assembly, the ejection driving assembly is arranged on the side of the carrier plate away from the clamping module, and the ejection driving assembly is used for driving the ejector rod to move relative to the carrier plate along the direction perpendicular to the carrier plate.
8. The welding device of claim 1, wherein, The pressing module further comprises a rotating assembly, the rotating assembly is used for driving the pressing plate and the battery cell to rotate around the first axis synchronously.
9. The welding device of claim 8, wherein, The rotating assembly comprises a rotating shaft and a second rotating motor, one end of the rotating shaft is fixedly connected with the pressing plate, the other end of the rotating shaft is drivingly connected with the second rotating motor, and the second rotating motor is used for driving the rotating shaft to rotate around the first axis.
10. The welding device of claim 1, wherein, The moving assembly comprises a guide rail, the guide rail extends along the arrangement direction of the pressing plate and the battery cell, and the pressing plate is movably installed on the guide rail relative to the guide rail along the extension direction of the guide rail.