A machining platform and welding system

Abstract

This application provides a processing platform and welding system for the electrode tab welding process of battery cells. The processing platform includes: a drive base, a turntable, and a fixture; the turntable is drivenly connected to the drive base, and the turntable is provided with a first connecting part. The drive base is used to drive the turntable to rotate around its central axis; the fixture is supported on the turntable and is used to clamp the battery cell. The fixture is provided with a second connecting part, and the first connecting part and the second connecting part are movably connected to connect the fixture and the turntable. The first connecting part and the second connecting part are configured to be able to move relative to each other in a first preset direction to achieve separation. The first connecting part and the second connecting part are movably connected to the fixture and the turntable, which can effectively reduce the difficulty of fixture replacement while ensuring that the fixture can rotate with the turntable, thereby effectively improving the fixture replacement efficiency and thus effectively improving the working efficiency of the welding system.

Description

Technical Field

[0001] This application belongs to the field of battery cell processing technology, and more specifically, relates to a processing platform and welding system. Background Technology

[0002] With the rapid development of new energy vehicles, higher requirements have been placed on the battery processing and manufacturing field in China. In order to improve battery production efficiency, specialized welding systems and processing platforms are now typically used for the electrode welding process of battery cells.

[0003] Existing processing platforms for electrode welding in battery cells have structural limitations, making disassembly and replacement difficult and affecting the working efficiency of the welding system. Utility Model Content

[0004] This application provides a processing platform and welding system to improve the working efficiency of the welding system.

[0005] The technical solution adopted in this application is as follows: This application provides a processing platform for the electrode tab welding process of battery cells. The processing platform includes: a drive base, a turntable, and a fixture; the turntable is connected to the drive base in a transmission manner, the turntable is provided with a first connecting part, and the drive base is used to drive the turntable to rotate around the central axis of the turntable; the fixture is supported on the turntable and is used to hold the battery cell. The fixture is provided with a second connecting part, and the first connecting part and the second connecting part are connected in a movable manner to connect the fixture and the turntable. The first connecting part and the second connecting part are configured to be able to move relative to each other in a first preset direction to achieve separation.

[0006] In some implementations, the first preset direction is set parallel to the central axis.

[0007] In some embodiments, the first connecting part and the second connecting part are mutually matched rotationally symmetric structures, and the rotational symmetry order of the first connecting part and the second connecting part is greater than or equal to 2.

[0008] In some embodiments, one of the first connecting portion and the second connecting portion includes a plurality of pins, and the other includes a plurality of pin holes that match the plurality of pins. The plurality of pins and the plurality of pin holes are arranged in a rotationally symmetrical manner.

[0009] In some embodiments, the turntable is further provided with a first magnetic attraction part, and the clamp is further provided with a second magnetic attraction part. The first magnetic attraction part and the second magnetic attraction part are used to position the first connecting part and the second connecting part through magnetic attraction.

[0010] In some embodiments, the turntable further includes a connecting plate and a disc-shaped body. The connecting plate includes a first part and a second part connected to the first part. The first part is connected to the disc-shaped body. The second part extends radially away from the outer periphery of the disc-shaped body. The projection of the second part along a first preset direction does not overlap with the projection of the disc-shaped body along the first preset direction. The second part is provided with a first connecting portion, and a clamp is supported on the second part.

[0011] In some embodiments, the processing platform further includes a clamping device disposed on one side of the connecting plate along a first preset direction. The clamp includes: a base, supported on the second part, a second connecting part disposed on one side of the base, a positioning mounting part disposed on the side of the base opposite to the second part, and a battery cell disposed on the positioning mounting part; a holding mechanism for clamping the battery cell to the positioning mounting part; and a pull rod assembly movably connected to the base, wherein the pull rod is configured to move relative to the base along the first preset direction, a first connecting end of the pull rod assembly is connected to the holding mechanism, and a second connecting end of the pull rod assembly extends to the side of the base opposite to the positioning mounting part, the second connecting end being configured to be driveably connected to the clamping device, the clamping device being used to drive the pull rod assembly to move along the first preset direction so that the holding mechanism releases the battery cell.

[0012] In some embodiments, the pull rod assembly includes a pull rod and an opening clamp block. The pull rod is movably connected to the base and is configured to move relative to the base along a first preset direction. One end of the pull rod is connected to the holding mechanism, and the other end is connected to the opening clamp block. The loosening device includes: a toggle member, including a connecting body and a toggle part connected to the connecting body. The connecting body is radially spaced on one side of the opening clamp block, and the toggle part is spaced along the first preset direction on the side of the opening clamp block connected to the pull rod; and a drive assembly, which is drively connected to the connecting body. The drive assembly is used to drive the connecting body to move along the first preset direction toward the side away from the base, so as to drive the toggle part to move the opening clamp block downward along the first preset direction, so as to release the battery cell by the holding mechanism.

[0013] In some embodiments, the clamp includes two sets of retaining mechanisms and two sets of pull rod assemblies. The two sets of retaining mechanisms are spaced apart on both sides of the positioning and mounting part along a second preset direction. The second preset direction is perpendicular to the first preset direction and the radial direction of the turntable. The two sets of pull rod assemblies are respectively connected to the corresponding retaining mechanisms, and along the second preset direction, the two sets of pull rod assemblies are spaced apart on both sides of the second part.

[0014] This application provides a welding system for the electrode welding process of battery cells. The welding system includes the processing platform described in any of the above embodiments. The welding system includes a loading station, a unloading station, and a welding station arranged at intervals around a turntable. The welding station is located between the loading station and the unloading station. A drive base is used to drive the turntable to rotate so as to sequentially transfer the fixture to the loading station, the welding station, and the unloading station. Both the loading station and the unloading station are equipped with a clamping device and a material conveying device. The clamping device is used to drive the fixture to open the clamp, and the material conveying device is used to transport the battery cell. The welding station is equipped with welding equipment for welding the electrode of the battery cell.

[0015] In some embodiments, the battery cell includes a first tab welding end and a second tab welding end disposed opposite to each other. The movable connection method includes a first sub-movable connection method and a second sub-movable connection method. In the first sub-movable connection method, there is a first relative positional relationship between the clamp and the turntable, so that the first tab welding end is disposed away from the turntable. In the second sub-movable connection method, there is a second relative positional relationship between the clamp and the turntable, so that the second tab welding end is disposed away from the turntable.

[0016] The beneficial effects of this application are as follows: This application provides a processing platform for the electrode tab welding process of battery cells. The processing platform includes: a drive base, a turntable, and a fixture; the turntable is drivenly connected to the drive base, and the turntable is provided with a first connecting part. The drive base is used to drive the turntable to rotate around its central axis; the fixture is supported on the turntable and is used to clamp the battery cell. The fixture is provided with a second connecting part, and the first connecting part and the second connecting part are movably connected to connect the fixture and the turntable. The first connecting part and the second connecting part are configured to be able to move relative to each other in a first preset direction to achieve separation. The first connecting part and the second connecting part are movably connected to the fixture and the turntable, which can effectively reduce the difficulty of fixture replacement while ensuring that the fixture can rotate with the turntable, thereby effectively improving the fixture replacement efficiency and thus effectively improving the working efficiency of the welding system. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the processing platform according to an embodiment of this application;

[0019] Figure 2 for Figure 1 An exploded view of the processing platform shown. Figure 3 for Figure 2 A schematic diagram of the three-dimensional structure of the turntable shown; Figure 4 for Figure 2 A three-dimensional structural schematic diagram of the fixture shown; Figure 5 for Figure 4 A schematic diagram of the fixture's structure along direction A; Figure 6 for Figure 4 A three-dimensional structural schematic diagram of the fixture shown; Figure 7 for Figure 2 The diagram shows a three-dimensional structural schematic of the clamp release device.

[0020] The following are the labeling elements in the figure: 10. Machining platform; 20. Battery cell; z1. Central axis; x1. First preset direction; x2. Second preset direction; x3. Radial direction; 100. Drive base; 200. Turntable; 300. Clamp; 400. Clamp release device; 500. Material sensor; 210. Disc-shaped main body; 220. Connecting plate; 230. First connecting part; 240. First magnetic attraction part; 310. Base; 320. Holding mechanism; 330. Pull rod assembly; 340. Second magnetic attraction part; 350. Second connecting part; 410. Actuating element; 420. Drive assembly; 430. Clearance space; 221. First part; 222. Second part; 321. Linkage mechanism; 322. Elastic element; 323. Pressure block; 331. Pull rod; 332. Clamping block; 411. Connecting body; 412. Actuating part. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] Please see Figure 1 and Figure 2 The processing platform 10 and welding system (not shown) provided in the embodiments of this application will now be described. The welding system is applied to the tab welding process of the battery cell 20, and the processing platform 10 is used to position the battery cell 20 and to move the battery cell 20 to the processing station corresponding to the welding system.

[0026] Please continue reading. Figure 1 and Figure 2 And further reading Figure 3 , Figure 4 and Figure 5 The processing platform 10 includes a drive base 100, a turntable 200, and a clamp 300. The turntable 200 is connected to the drive base 100 in a transmission manner. The turntable 200 is provided with a first connecting part 230. The drive base 100 is used to drive the turntable 200 to rotate around the axial axis z1 of the turntable 200. The clamp 300 is supported on the turntable 200 and is used to clamp the battery cell 20. The clamp 300 is provided with a second connecting part 350. The first connecting part 230 and the second connecting part 350 are connected in a movable manner to connect the clamp 300 and the turntable 200. The first connecting part 230 and the second connecting part 350 are configured to be able to move relative to each other along a first preset direction x1 to achieve separation.

[0027] Specifically, the turntable 200 provides structural support and transmission components for the fixture 300. The processing station of the welding system can be arranged around the outer periphery of the turntable 200. The turntable 200 rotates under the drive of the drive seat 100, and drives the fixture 300 to rotate to the corresponding processing station, so that the equipment at the processing station can complete the specified process steps for the fixture 300 or the battery cell 20.

[0028] In this embodiment, the turntable 200 and the fixture 300 are relatively fixed by the connection of the first connecting part 230 and the second connecting part 350, so that the fixture 300 can rotate together with the turntable 200. Specifically, after the first connecting part 230 and the second connecting part 350 cooperate, the fixture 300 can be connected to the turntable 200. The turntable 200 rotates around its axial axis z1 under the drive of the drive seat 100, and drives the fixture 300 to rotate to the corresponding processing station, so that the equipment set at the processing station can complete the specified process steps on the fixture 300 or the battery cell 20 clamped on the fixture 300.

[0029] The connection between the first connecting part 230 and the second connecting part 350 is a movable connection. The first connecting part 230 and the second connecting part 350 are connected in a movable manner, so that the first connecting part 230 and the second connecting part 350 can move relative to each other along the first preset direction x1. More specifically, after the first connecting part 230 and the second connecting part 350 are paired and positioned, they can move closer to each other along the first preset direction x1 and achieve a mating connection, so that the clamp 300 can remain relatively fixed with the turntable 200, thereby allowing the clamp 300 to rotate with the turntable 200 to the preset work position. Furthermore, the first connecting part 230 and the second connecting part 350 can also separate from each other along the first preset direction x1, so that the clamp 300 can be removed from the turntable 200 along the first preset direction x1 for replacement.

[0030] Compared to other connection methods, the fixture 300 and turntable 200 connected by the movable connection method described in the above embodiment can effectively reduce the difficulty of replacing the fixture 300 while ensuring that the fixture 300 can rotate with the turntable 200, thereby effectively improving the replacement efficiency of the fixture 300. For scenarios requiring the processing of different types of battery cells 20, the replacement efficiency of the fixture 300 has a significant impact on the working efficiency of the processing platform 10 and the welding system. For example, different structural types of battery cells 20 require corresponding and compatible fixtures 300 to achieve high-precision clamping and positioning, and to better ensure the processing accuracy of the battery cells 20 by the welding system. Therefore, when processing different types of battery cells 20, it is often necessary to replace the fixture 300. If the replacement efficiency of the fixture 300 is too low, it will cause the processing chain to stagnate, affecting the working efficiency of the processing platform 10 and the welding system. Furthermore, in terms of maintenance and repair, the efficiency of fixture 300 replacement directly affects the maintenance and repair efficiency of machining platform 10, and consequently, the working efficiency of machining platform 10 and welding system. Therefore, in this embodiment, the first connecting part 230 and the second connecting part 350 are connected in a movable manner, which can effectively improve the replacement efficiency of fixture 300, thereby effectively improving the working efficiency of machining platform 10 and welding system.

[0031] The first connecting portion and the second connecting portion described in the above embodiments are configured to be separable along a first preset direction, so that the fixture can be connected to or disassembled from the turntable along the first preset direction. The first preset direction x1 is parallel to the axial axis z1. Specifically, setting the first preset direction x1, that is, the disassembly direction of the fixture 300, to be parallel to the axial axis z1 can effectively utilize the axial space of the processing platform 10, reduce the interference caused by other components such as the turntable 200 to the disassembly and replacement process of the fixture 300, and thus effectively improve the disassembly and replacement efficiency of the fixture 300.

[0032] The first connecting portion 230 and the second connecting portion 350 described in the above embodiments are mutually matched rotationally symmetric structures, and the rotational symmetry order of the first connecting portion 230 and the second connecting portion 350 is greater than or equal to 2.

[0033] Specifically, a rotationally symmetric structure has the property of achieving coincidence after rotating around a predetermined rotation angle around a rotation center. The predetermined rotation angle is equal to 360° divided by the rotational symmetry order. For specific definitions of rotationally symmetric structures and rotational symmetry orders, please refer to existing descriptions of symmetry type classifications and applications; these will not be elaborated upon here. For example, when the rotational symmetry order is 2, based on the original matching, the second connecting part 350 rotates 180° relative to the first connecting part 230 around the rotation center and then matches with the first connecting part 230 again. The rotational symmetry order of the first connecting part 230 and the second connecting part 350 can be set to actual values ​​greater than or equal to 2, such as 2, 3, or 4, and can be set according to actual working conditions; these will not be elaborated upon here.

[0034] In this embodiment, the first connecting portion 230 and the second connecting portion 350 are matched rotationally symmetrical structures. The first connecting portion 230 and the second connecting portion 350 can be connected in at least two movable connection methods, thus allowing the relative positional relationship between the fixture 300 and the turntable 200 to be adjustable, and ensuring at least two relative positional relationships between them. In actual operation, by adjusting the movable connection method of the first connecting portion 230 and the second connecting portion 350, the relative positional relationship between the fixture 300 and the turntable 200 can be adjusted, thereby achieving orientation adjustment of the battery cell 20. This facilitates the welding system's welding of the tab welding portions located at different positions on the battery cell 20. Furthermore, when adjusting the orientation of the battery cell 20, it is not necessary to remove the battery cell 20 from the fixture 300, thus eliminating the need for repositioning the battery cell 20 and operating the fixture 300, effectively reducing the difficulty of orientation adjustment of the battery cell 20, and thereby effectively improving the working efficiency of the processing platform 10.

[0035] In this embodiment, the welding equipment is disposed on the outer periphery of the turntable 200, and the rotational symmetry order of the first connecting portion 230 and the second connecting portion 350 is set to 2. This results in two relative positional relationships between the fixture 300 and the turntable 200: a first relative positional relationship and a second relative positional relationship. (See also...) Figure 5 The processing platform 10 can be applied to the tab welding process of a battery cell 20 with a first tab welding end 21 and a second tab welding end 22 arranged opposite to each other. Specifically, after the battery cell 20 is fixed on the fixture 300, if it is necessary to perform tab welding on the first tab welding end 21, the welding system can adjust the positional relationship between the fixture 300 and the turntable 200 to a first relative positional relationship, so that the first tab welding end 21 faces the welding equipment of the welding system, that is, the first tab welding end 21 is set away from the turntable 200. This can effectively reduce the interference of the turntable 200 and other equipment on the welding equipment, and effectively reduce the difficulty of the welding equipment to perform tab welding on the first tab welding end 21. If electrode welding is required on the second electrode welding end 22, the welding system can adjust the positional relationship between the fixture 300 and the turntable 200 to a second relative positional relationship, so that the welding end of the second electrode faces the welding equipment of the welding system, that is, the welding end of the second electrode is set away from the turntable 200. This can effectively reduce the interference of the turntable 200 and other equipment on the welding equipment, and effectively reduce the difficulty of the welding equipment to perform electrode welding on the welding end 22 of the second electrode.

[0036] In the above embodiments, one of the first connecting portion 230 and the second connecting portion 350 includes a plurality of pins 230a, and the other includes a plurality of pin holes 350a that match the plurality of pins 230a. The plurality of pins 230a and the plurality of pin holes 350a are arranged rotationally symmetrically, thereby enabling the first connecting portion 230 and the second connecting portion 350 to be movably connected in a first preset direction x1, and enabling the first connecting portion 230 and the second connecting portion 350 to have multiple matching relationships. In this embodiment, the pins 230a are disposed on the turntable 200, and the pin holes 350a are disposed on the clamp 300. Of course, in other embodiments, the pins 230a may also be disposed on the clamp 300, and the corresponding pin holes 350a may be disposed on the turntable 200. This will not be described in detail here.

[0037] Please continue reading. Figure 3 and Figure 5The turntable 200 described in the above embodiments is further provided with a first magnetic attraction part 240, and the clamp 300 described in the above embodiments is further provided with a second magnetic attraction part 340. The first magnetic attraction part 240 and the second magnetic attraction part 340 are used to position the first connecting part 230 and the second connecting part 350 through magnetic attraction. In this way, the first magnetic attraction part 240 and the second magnetic attraction part 340 can attract each other through magnetic attraction to achieve matching positioning of the first connecting part 230 and the second connecting part 350, thereby effectively reducing the difficulty of matching and aligning the first connecting part 230 and the second connecting part 350, and thus effectively reducing the assembly difficulty of the turntable 200 and the clamp 300. Furthermore, the magnetic attraction force between the first magnetic attraction part 240 and the second magnetic attraction part 340 can also improve the connection stability of the clamp 300 and the turntable 200 along the first preset direction x1, effectively reducing the risk of movement along the first preset direction x1 due to shaking between the clamp 300 and the turntable 200.

[0038] Please continue reading. Figure 3 The turntable 200 described in the above embodiment also includes a connecting plate 220 and a disc-shaped body 210. The connecting plate 220 includes a first part 221 and a second part 222 connected to the first part 221. The first part 221 is connected to the disc-shaped body 210. The second part 222 extends along the radial x3 of the disc-shaped body 210 away from the outer periphery of the disc-shaped body 210. The projection of the second part 222 along the first preset direction x1 does not overlap with the projection of the disc-shaped body 210 along the first preset direction x1. The second part 222 is provided with a first connecting portion 230. The clamp 300 is supported on the second part 222.

[0039] The clamp 300 is connected to the disc-shaped body 210 via the connecting plate 220 and is suspended on the outer periphery of the disc-shaped body 210 via the connecting plate 220. This ensures that the clamp 300 and the axial axis z1 of the disc-shaped body 210 (i.e., the axial axis z1 of the turntable 200) maintain a sufficient radial x3 distance, while also effectively reducing the overall volume of the disc-shaped body 210. Furthermore, the suspension of the clamp 300 on the outer periphery of the disc-shaped body 210 effectively reduces the interference of the disc-shaped body 210 on the clamp 300, thereby effectively reducing the difficulty of disassembling the clamp 300 and thus effectively improving the disassembly efficiency of the clamp 300.

[0040] Please continue reading. Figure 1 and Figure 4The processing platform 10 described in the above embodiments also includes a clamping device 400, which is disposed on one side of the connecting plate 220 along a first preset direction x1. The clamp 300 described in the above embodiments includes a base 310, a holding mechanism 320, and a pull rod assembly 330. A base 310 is supported on the second part 222. A second connecting part 350 is disposed on one side of the base 310. A positioning mounting part is provided on the side of the base 310 opposite to the second part 222. The battery cell 20 is disposed on the positioning mounting part. A retaining mechanism 320 is used to clamp the battery cell 20 to the positioning mounting part. A pull rod assembly 330 is movably connected to the base 310. The pull rod 331 is configured to move relative to the base 310 along a first preset direction x1. The first connecting end (not shown in the figure) of the pull rod assembly 330 is connected to the retaining mechanism 320. The second connecting end (not shown in the figure) of the pull rod assembly 330 extends to the side of the base 310 opposite to the positioning mounting part. The second connecting end is configured to be connected to the release device 400. The release device 400 is used to drive the pull rod assembly 330 to move along the first preset direction x1 so that the retaining mechanism 320 releases the battery cell 20.

[0041] The clamping device 400 is configured on one side of the connecting plate 220 and moves along the first preset direction x1 through the transmission rod assembly 330 to realize the clamping function of the clamp 300 (that is, to release the battery cell 20). This can effectively improve the space utilization of the processing platform 10 and thus effectively reduce the space occupancy rate of the processing platform 10.

[0042] Please see Figure 6 The holding mechanism 320 described in the above embodiment includes a linkage mechanism 321, a pressure block 323, and an elastic element 322. The linkage mechanism 321 is mounted on and rotatably connected to the base 310. One end of the linkage mechanism 321 is connected to the pressure block 323, and the other end is connected to one end of the elastic element 322 and the first connecting end of the pull rod assembly 330. The other end of the elastic element 322 is connected to the base 310. The elastic element 322 drives the linkage mechanism 321, and the pressure block 323 clamps the battery cell 20 to the positioning mounting portion under the drive of the linkage mechanism 321. Under the drive of the loosening device 400, the pull rod assembly 330 drives the linkage mechanism 321, so that the linkage mechanism 321 can overcome the elastic force of the elastic element 322 and lift the pressure block 323 away from the battery cell 20, thereby releasing the pressure on the battery cell 20.

[0043] Please continue reading. Figure 6 And further reading Figure 7The lever assembly 330 described in the above embodiments includes a lever 331 and an opening clamping block 332. The lever 331 is movably connected to the base 310, and the lever 331 is configured to move relative to the base 310 along a first preset direction x1. One end of the lever 331 is connected to the holding mechanism 320, and the other end is connected to the opening clamping block 332. The clamp release device 400 described in the above embodiments includes an actuating member 410 and a driving assembly 420. The actuating component 410 includes a connecting body 411 and an actuating part 412 connected to the connecting body 411. The connecting body 411 is arranged radially x3 at intervals on one side of the clamping block 332, and the actuating part 412 is arranged along a first preset direction x1 at intervals on the side of the clamping block 332 connected to the pull rod 331. The driving component 420 is connected to the connecting body 411 in a driving manner. The driving component 420 is used to drive the connecting body 411 to move along the first preset direction x1 toward the side away from the base 310, so as to drive the actuating part 412 to move the clamping block 332 downward along the first preset direction x1, so as to release the battery cell 20 by the holding mechanism 320.

[0044] Specifically, the clamp release device 400 is located at the loading and / or unloading station of the welding system along the rotation direction of the turntable 200. The connecting body 411 is arranged radially at intervals of x3 on one side of the clamping block 332, and the actuating part 412 is arranged at intervals along the first preset direction x1 on the side where the clamping block 332 is connected to the pull rod 331. Thus, there is a clearance space 430 between the connecting body 411 and the actuating part 412. When the clamp 300 rotates with the turntable 200, the clamping block 332 and the pull rod 331 can pass through the clearance space 430, so that the clamp release device 400 and the clamp 300 do not interfere with each other. Furthermore, when the clamp 300 rotates with the turntable 200 to the loading or unloading station, the pull rod 331 and the clamping block 332 are located within the clearance space 430, and the actuating part 412 is positioned directly above the clamping block 332 along the first preset direction x1. When loading or unloading is required, the actuating part 412 can move downward along the first preset direction x1 under the drive of the drive assembly 420 to abut against the clamping block 332, and pull the clamping block 332 and the pull rod 331 downward along the first preset direction x1, thereby causing the holding mechanism 320 to release the battery cell 20. After loading or unloading is completed, the actuating part 412 moves upward under the drive of the drive assembly 420, the holding mechanism 320 resets and clamps the battery cell 20, and the clamp 300 can pass through the clearance space 430 along the rotation direction under the drive of rotation and rotate to the next station.

[0045] The clamp 300 described in the above embodiments includes two sets of retaining mechanisms 320 described in the above embodiments and two sets of pull rod assemblies 330 described in the above embodiments. The two sets of retaining mechanisms 320 are spaced apart on both sides of the positioning and mounting part along a second preset direction x2. The second preset direction x2 is perpendicular to the first preset direction x1 and the radial direction x3 of the turntable 200. The two sets of pull rod assemblies 330 are respectively connected to the corresponding retaining mechanisms 320, and along the second preset direction x2, the two sets of pull rod assemblies 330 are spaced apart on both sides of the second part 222.

[0046] By equipping the clamp 300 with two sets of holding mechanisms 320 and two sets of pull rod assemblies 330, the positioning and clamping effect of the clamp 300 on the battery cell 20 can be effectively improved. Furthermore, the two sets of pull rod assemblies 330 are spaced apart on both sides of the second part 222, so that the two parts of the clamp 300 used to receive external force (i.e., the two sets of pull rod assemblies 330) are located on both sides of the second part 222, thereby effectively reducing the risk of the clamp 300 tilting to one side when the release device 400 pulls the pull rod assembly 330.

[0047] This application embodiment also provides a welding system for the electrode welding process of battery cell 20. The welding system includes the processing platform 10 described in the above embodiment. The welding system includes a loading station (not shown), a unloading station (not shown), and a welding station (not shown) arranged at intervals around the turntable 200. The welding station is located between the loading station and the unloading station. The drive seat 100 is used to drive the turntable 200 to rotate, so as to rotate the fixture 300 to the loading station, the welding station, and the unloading station in sequence. The loading station and the unloading station are both equipped with a clamping device 400 and a material conveying device (not shown). The clamping device 400 is used to drive the fixture 300 to realize the clamping. The material conveying device is used to transport the battery cell 20. The welding station is equipped with welding equipment (not shown) for welding the electrode of the battery cell 20.

[0048] The battery cell 20 described in the above embodiments includes a first tab welding end 21 and a second tab welding end 22 arranged opposite to each other. The movable connection method includes a first sub-movable connection method and a second sub-movable connection method. In the first sub-movable connection method, the clamp 300 and the turntable 200 have a first relative positional relationship, so that the first tab welding end 21 is set away from the turntable 200. In the second sub-movable connection method, the clamp 300 and the turntable 200 have a second relative positional relationship, so that the second tab welding end 22 is set away from the turntable 200.

[0049] Specifically, as described above, after the battery cell 20 is fixed on the fixture 300, if it is necessary to weld the first tab welding end 21, the welding system can adjust the positional relationship between the fixture 300 and the turntable 200 to a first relative positional relationship, so that the first tab welding end 21 faces the welding equipment of the welding system, that is, the first tab welding end 21 is set away from the turntable 200. This can effectively reduce the interference of the turntable 200 and other equipment on the welding equipment, thereby effectively reducing the difficulty of the welding equipment to weld the first tab welding end 21. If it is necessary to weld the second tab welding end 22, the welding system can adjust the positional relationship between the fixture 300 and the turntable 200 to a second relative positional relationship, so that the second tab welding end faces the welding equipment of the welding system, that is, the second tab welding end 22 is set away from the turntable 200. This can effectively reduce the interference of the turntable 200 and other equipment on the welding equipment, thereby effectively reducing the difficulty of the welding equipment to weld the second tab welding end 22.

[0050] The welding station described in the above embodiments includes a first welding station and a second welding station spaced apart. The welding system also includes a flipping station located between the first and second welding stations. The flipping station is equipped with a flipping device. Assuming that the relative positional relationship between the fixture 300 and the turntable 200 at the loading station is a first relative positional relationship, after the battery cell 20 is placed on the fixture 300 at the loading station, the drive assembly 420 drives the turntable 200 to rotate the fixture 300 to the first welding station. In this way, the welding equipment located at the first welding station can weld the first tab welding end 21 of the battery cell 20. Furthermore, after the welding of the first tab welding end 21 is completed, the turntable 200 continues to drive the fixture 300 to rotate to the flipping station. The flipping device removes the fixture 300 holding the battery cell 20 from the turntable 200 along the first preset direction x1, and after adjusting the position of the fixture 300, it reinstalls the fixture 300 holding the battery cell 20 onto the turntable 200 so that the fixture 300 and the turntable 200 are in a second relative position relationship. After the adjustment is completed, the turntable 200 further drives the fixture 300 to rotate to the second welding station so that the welding equipment located at the second welding station can weld the second tab welding end 22 of the battery cell 20. After the welding is completed, the rotation drives the fixture 300 to rotate to the unloading station to unload the battery cell 20.

[0051] The turntable 200 described in the above embodiment is provided with a plurality of first connecting parts 230, which are spaced apart around the axial axis z1. The processing platform 10 also includes a fixture 300 corresponding to the number of the first connecting parts 230, and the fixture 300 is connected to the corresponding first connecting part 230. Furthermore, each time the turntable 200 rotates by a preset angle, each fixture 300 can move to the corresponding processing station, thus enabling the welding system to achieve assembly line operation and effectively improving the working efficiency of the welding system.

[0052] The processing platform 10 described in the above embodiments also includes a number of material sensors 500 corresponding to the fixture 300. The material sensors 500 are arranged corresponding to the fixture 300 and are used to detect whether the fixture 300 is holding a battery cell 20.

[0053] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A processing platform, characterized in that, The processing platform for the electrode welding process of battery cells includes: Drive unit; A turntable, which is connected to the drive seat, is provided with a first connecting part. The drive seat is used to drive the turntable to rotate about its central axis. A clamp, supported on the turntable, is used to clamp the battery cell. The clamp is provided with a second connecting part. The first connecting part and the second connecting part are movably connected to connect the clamp and the turntable. The first connecting part and the second connecting part are configured to move relative to each other in a first preset direction to achieve separation.

2. The processing platform according to claim 1, characterized in that, The first preset direction is set parallel to the central axis.

3. The processing platform according to claim 2, characterized in that, The first connecting part and the second connecting part are mutually matched rotationally symmetric structures, and the rotational symmetry order of the first connecting part and the second connecting part is greater than or equal to 2.

4. The processing platform according to claim 3, characterized in that, One of the first connecting portion and the second connecting portion includes a plurality of pins, and the other includes a plurality of pin holes that match the plurality of pins. The plurality of pins and the plurality of pin holes are arranged rotationally symmetrically.

5. The processing platform according to claim 2, characterized in that, The turntable is also provided with a first magnetic attraction part, and the clamp is also provided with a second magnetic attraction part. The first magnetic attraction part and the second magnetic attraction part are used to position the first connecting part and the second connecting part through magnetic attraction.

6. The processing platform according to any one of claims 2-5, characterized in that, The turntable also includes a connecting plate and a disc-shaped body. The connecting plate includes a first part and a second part connected to the first part. The first part is connected to the disc-shaped body. The second part extends radially away from the outer periphery of the disc-shaped body. The projection of the second part along a first preset direction does not overlap with the projection of the disc-shaped body along the first preset direction. The second part is provided with the first connecting portion. The clamp is supported on the second part.

7. The processing platform according to claim 6, characterized in that, The processing platform further includes a clamping device, which is disposed on one side of the connecting plate along the first preset direction. The clamp includes: A base is provided on the second part, a second connecting part is provided on one side of the base, a positioning and mounting part is provided on the side of the base opposite to the second part, and the battery cell is provided on the positioning and mounting part; A retaining mechanism is used to clamp the battery cell to the positioning and mounting portion; A pull rod assembly is movably connected to the base, and the pull rod is configured to move relative to the base along a first preset direction. A first connecting end of the pull rod assembly is connected to the holding mechanism, and a second connecting end of the pull rod assembly extends to the side of the base opposite to the positioning mounting portion. The second connecting end is configured to be driveably connected to the release device, which is used to drive the pull rod assembly to move along the first preset direction so that the holding mechanism releases the battery cell.

8. The processing platform according to claim 7, characterized in that, The pull rod assembly includes a pull rod and an opening clamping block. The pull rod is movably connected to the base and is configured to move relative to the base along a first preset direction. One end of the pull rod is connected to the holding mechanism, and the other end is connected to the opening clamping block. The clamping release device includes: A toggle element includes a connecting body and a toggle part connected to the connecting body. The connecting body is arranged radially at intervals on one side of the clamping block, and the toggle part is arranged radially at intervals on the side of the clamping block connected to the pull rod. A driving component is connected to the connecting body in a transmission manner. The driving component is used to drive the connecting body to move in the first preset direction toward the side away from the base, so as to drive the actuating part to move the opening clamp block downward in the first preset direction, so as to release the battery cell by the holding mechanism.

9. The processing platform according to claim 7, characterized in that, The clamp includes two sets of holding mechanisms and two sets of pull rod assemblies. The two sets of holding mechanisms are spaced apart on both sides of the positioning and mounting part along a second preset direction. The second preset direction is perpendicular to the first preset direction and the radial direction of the turntable. The two sets of pull rod assemblies are respectively connected to the corresponding holding mechanisms, and along the second preset direction, the two sets of pull rod assemblies are spaced apart on both sides of the second part.

10. A welding system, characterized in that, The electrode welding process for battery cells includes a welding system comprising the processing platform as described in any one of claims 1-9. The welding system includes a loading station, a unloading station, and a welding station spaced apart around the turntable. The welding station is located between the loading station and the unloading station. The drive base drives the turntable to rotate, thereby sequentially transferring the fixture to the loading station, the welding station, and the unloading station. Both the loading station and the unloading station are equipped with a clamping release device and a material conveying device. The clamping release device is used to drive the fixture to open the clamp, and the material conveying device is used to transport the battery cell. The welding station is equipped with welding equipment for welding the electrode tabs of the battery cell.

11. The welding system according to claim 10, characterized in that, The battery cell includes a first tab welding end and a second tab welding end arranged opposite to each other. The movable connection method includes a first sub-movable connection method and a second sub-movable connection method. In the first sub-movable connection method, the clamp and the turntable have a first relative positional relationship, so that the first tab welding end is set away from the turntable. In the second sub-movable connection method, the clamp and the turntable have a second relative positional relationship, so that the second tab welding end is set away from the turntable.

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