Welding device and welding method

Abstract

The invention provides a welding device and a welding method. The welding device comprises a positioning mechanism, a transferring mechanism and a welding mechanism. The positioning mechanism comprises a first clamp and a second clamp which are arranged in the first direction, and the first clamp is used for clamping a workpiece so as to keep the first welding edge in the first direction; the second clamp is used for clamping the workpiece so as to keep the second welding edge in the first direction; the transferring mechanism is used for transferring the workpiece between the first clamp and the second clamp and rotating the workpiece so that the first welding edge or the second welding edge can be switched to the first direction. The welding mechanism is used for welding the first welding edge of the workpiece located on the first clamp and welding the second welding edge of the workpiece located on the second clamp. According to the welding device, manual operation can be reduced, the welding machining difficulty of the workpiece is lowered, and the welding machining cost of the workpiece is lowered.

Description

Technical Field

[0001] The present application relates to the technical field of welding processing, and in particular to a welding device and a welding method. Background Art

[0002] When welding a workpiece, it is usually necessary to weld multiple welding edges of the workpiece. However, after welding a single welding edge, the position of the workpiece needs to be manually switched to achieve welding of other welding edges, which makes the welding operation complicated and the labor cost high. Summary of the invention

[0003] The embodiments of the present application provide a welding device and a welding method, which can reduce the welding processing cost of a workpiece.

[0004] In a first aspect, an embodiment of the present application provides a welding device, the welding device is used to weld a workpiece, the workpiece has a first welding edge and a second welding edge adjacent to each other, and the welding device includes a positioning mechanism, a transfer mechanism, and a welding mechanism. The positioning mechanism includes a first clamp and a second clamp arranged along a first direction, the first clamp is used to clamp the workpiece to keep the first welding edge in the first direction; the second clamp is used to clamp the workpiece to keep the second welding edge in the first direction; the transfer mechanism is used to realize the transfer of the workpiece between the first clamp and the second clamp, and rotate the workpiece to switch the first welding edge or the second welding edge to the first direction; the welding mechanism is used to weld the first welding edge of the workpiece located in the first clamp, and weld the second welding edge of the workpiece located in the second clamp.

[0005] In the above technical solution, the positioning mechanism can locate the position of the workpiece; the first fixture and the second fixture of the positioning assembly can locate workpieces in different states, so that the welding mechanism can weld the first welding edge of the workpiece located in the first fixture and the second welding edge of the workpiece located in the second fixture. And the welding mechanism can weld the first welding edge and the second welding edge, which improves the performance of the welding mechanism. The transfer mechanism can rotate the workpiece on the first fixture and transfer it to the second fixture, and can also rotate the workpiece on the second fixture and transfer it to the first fixture, which reduces manual operation, reduces the difficulty of welding processing of the workpiece, and reduces the welding processing cost of the workpiece.

[0006] In some embodiments, the first fixture has a first welding station and a first transfer station, and the positioning mechanism also includes a first drive component, which is connected to the first fixture and is configured to drive the first fixture to move along a first direction so that the first fixture switches between the first welding station and the first transfer station; the welding mechanism is used to weld the first welding edge of the workpiece on the first fixture located at the first welding station, and the transfer mechanism is used to pick up the workpiece on the first fixture located at the first transfer station.

[0007] In this embodiment, the first driving assembly can drive the first fixture to switch between the first welding station and the first transfer station to facilitate the transfer of the workpiece. The welding mechanism and the transfer mechanism can respectively weld the workpiece at the first welding station and transfer the workpiece at the first transfer station. The welding and transfer of the workpiece are performed at different positions, reducing the risk of interference between the welding mechanism and the transfer mechanism.

[0008] In some embodiments, the welding mechanism and the positioning mechanism are arranged along a second direction, and the second direction is perpendicular to the first direction; the welding device also includes a first clamping mechanism, which is used to clamp the workpiece on the first clamp located at the first welding station along the second direction.

[0009] In this embodiment, the workpiece on the first fixture located at the first welding station is clamped by the first clamping mechanism. The first clamping mechanism can further limit the position of the workpiece and improve the position stability of the workpiece, thereby improving the welding quality of the workpiece. The first clamping mechanism clamps the side of the workpiece facing the welding mechanism, making the welding more stable and improving the welding accuracy of the workpiece.

[0010] In some embodiments, the first fixture also has a loading station, and along the first direction, the first welding station is located between the loading station and the first transfer station, the positioning mechanism and the welding mechanism are arranged along the second direction, and the second direction is perpendicular to the first direction; the welding device also includes an adjustment mechanism, and the adjustment mechanism is configured to adjust the workpiece on the first fixture located at the loading station to a preset position along the second direction, and the first fixture is configured to clamp the workpiece located at the preset position.

[0011] In this embodiment, the workpiece on the first fixture is adjusted to a preset position by the adjusting mechanism, thereby improving the position accuracy of the workpiece on the first fixture, which is beneficial to improving the welding accuracy of the workpiece.

[0012] In some embodiments, the second fixture has a second welding station and a second transfer station, and the positioning mechanism also includes a second drive component, which is connected to the second fixture and configured to drive the second fixture to move along a first direction so that the second fixture switches between the second welding station and the second transfer station; the transfer mechanism is used to transfer the workpiece to the second transfer station, and the welding mechanism is used to weld the first welding edge of the workpiece on the second fixture located at the second welding station.

[0013] In this embodiment, the second driving assembly can drive the second fixture to switch between the second welding station and the second transfer station to facilitate the transfer of the workpiece. The welding mechanism and the transfer mechanism can respectively weld the workpiece at the second welding station and transfer the workpiece at the second transfer station. The welding and transfer of the workpiece are performed at different positions, reducing the risk of interference between the welding mechanism and the transfer mechanism.

[0014] In some embodiments, the welding mechanism and the positioning mechanism are arranged along a second direction, and the second direction is perpendicular to the first direction; the welding device also includes a second clamping mechanism, which is used to clamp the workpiece on the second clamp located at the second welding station along the second direction.

[0015] In this embodiment, the workpiece on the second fixture located at the second welding station is clamped by the second clamping mechanism. The second clamping mechanism can further limit the position of the workpiece and improve the position stability of the workpiece, thereby improving the welding quality of the workpiece. The second clamping mechanism clamps the side of the workpiece facing the welding mechanism, making the welding more stable and improving the welding accuracy of the workpiece.

[0016] In some embodiments, the welding mechanism and the positioning mechanism are arranged along the second direction, and the transfer mechanism includes a clamping assembly, a rotating assembly and a third driving assembly; the clamping assembly is used to clamp the workpiece; the rotating assembly is connected to the clamping assembly, and the rotating assembly is used to drive the clamping assembly to rotate around an axis extending along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; the third driving assembly is connected to the rotating assembly, and the third driving assembly is configured to drive the rotating assembly to move along the third direction.

[0017] In this embodiment, the clamping assembly can clamp the workpiece to facilitate picking up or placing the workpiece; the rotating assembly can rotate the clamping assembly to adjust the state of the workpiece clamped by the clamping assembly to achieve the switching of the first welding edge and the second welding edge orientation; the third driving assembly can drive the rotating assembly to move along the third direction to make the clamping assembly close to or away from the first fixture or the second fixture where the workpiece is placed, reducing the risk of interference between the transfer mechanism and the first fixture or between the transfer mechanism and the second fixture. The transfer mechanism realizes the transfer of the workpiece between the first fixture and the second fixture, and realizes the state conversion of the workpiece, reduces manual operation, reduces the difficulty of processing the workpiece, and improves the welding processing efficiency of the workpiece.

[0018] In some embodiments, the welding mechanism includes a welding assembly and a fourth driving assembly; the welding assembly is used to weld a first welding edge of the workpiece located in a first fixture, and to weld a second welding edge of the workpiece located in a second fixture; the fourth driving assembly is connected to the welding assembly, and the fourth driving assembly is used to drive the welding assembly to move along a first direction.

[0019] In this embodiment, by setting the fourth driving component to drive the welding component to move along the first direction, the welding component can switch between the first clamp and the second clamp by moving to weld the workpiece on the first clamp or the second clamp, thereby reducing the difficulty of welding the workpiece.

[0020] In some embodiments, the fourth driving assembly is further configured to drive the welding assembly to move along the second direction and the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. In this way, the welding assembly can also move closer to or farther away from the welding position of the workpiece along the second direction to adjust the welding distance of the workpiece; the welding assembly can also move along the third direction to adjust the welding position of the workpiece in the third direction, and it is more convenient to adjust the welding position and welding focal length.

[0021] In some embodiments, the welding device includes two welding mechanisms, and the positioning mechanism is disposed between the two welding mechanisms along the second direction, and the second direction is perpendicular to the first direction. In this way, welding mechanisms are disposed on both sides of the positioning mechanism along the second direction, and the two welding mechanisms can simultaneously weld the two sides of the workpiece along the second direction, thereby improving the welding efficiency of the workpiece.

[0022] In some embodiments, the first clamp includes a first base and a first pressing mechanism; the first base is used to support the workpiece; the first pressing mechanism is disposed on the first base, and the first pressing mechanism is configured to press the workpiece against the first base. By arranging the first base and the first pressing mechanism to cooperate and fix the workpiece, on the one hand, the position of the workpiece is fixed; on the other hand, by pressing the workpiece down, it is helpful to expose the first welding edge or the second welding edge along the second direction, thereby reducing the welding difficulty of the workpiece.

[0023] In some embodiments, the first clamp includes two first pressing mechanisms, and the two first pressing mechanisms are arranged along the first direction. In this way, the two first pressing mechanisms can make the fixation of the workpiece more stable and reduce the risk of the workpiece escaping from the first clamp.

[0024] In some embodiments, the first pressing mechanism includes a first column, a first pressing swing arm and a first driving member; one end of the first column is connected to the first base; the first pressing swing arm is rotatably disposed at an end of the first column away from the first base; the first driving member is connected to the first column, and the first driving member is configured to drive the first pressing swing arm to rotate so as to press the workpiece against the first base.

[0025] In this embodiment, the first pressing swing arm is driven to move by the first driving member, and the first pressing swing arm can swing to press the workpiece against the first base, so that the workpiece is fixed more conveniently.

[0026] In some embodiments, the first column is provided with a limiter, the limiter is provided with a slot for the workpiece to be inserted, and the slot is used to limit the range of movement of the workpiece along the second direction; the first column extends along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. By providing the slot, the slot can limit the range of movement of the workpiece along the second direction, reducing the risk of the workpiece escaping from the first fixture.

[0027] In some embodiments, the second fixture includes a second base and a second pressing mechanism; the second base is used to support the workpiece; the second pressing mechanism is disposed on the second base, and the second pressing mechanism is configured to press the workpiece against the second base. By providing the second base and the second pressing mechanism to cooperate in fixing the workpiece, on the one hand, the position of the workpiece is fixed; on the other hand, by pressing the workpiece, it is helpful to expose the first welding edge or the second welding edge along the second direction, thereby reducing the difficulty of welding the workpiece.

[0028] In some embodiments, the second clamp includes two second pressing mechanisms, and the two second pressing mechanisms are arranged along the first direction. In this way, the two second pressing mechanisms can make the fixation of the workpiece more stable and reduce the risk of the workpiece escaping from the second clamp.

[0029] In some embodiments, the second pressing mechanism includes a second column, a second pressing swing arm and a first driving unit; one end of the second column is connected to the second base; the second pressing swing arm is rotatably arranged at an end of the second column away from the second base; the first driving unit is connected to the second column, and the first driving unit is configured to drive the second pressing swing arm to rotate so as to press the workpiece against the second base.

[0030] In this embodiment, the second downward pressing swing arm is driven to move by the first driving unit, and the second downward pressing swing arm can swing to press the workpiece against the second base, so that the workpiece is fixed more conveniently.

[0031] In some embodiments, the workpiece is a battery cell, the battery cell includes a shell and an end cover, and the joint position of the shell and the end cover has a first welding edge and a second welding edge. In this way, the positioning mechanism can position the shell and the end cover, and the welding mechanism can weld the first welding edge and the second welding edge respectively to achieve welding of the shell and the end cover of the battery cell.

[0032] In a second aspect, an embodiment of the present application provides a welding method, the method comprising: positioning a workpiece and keeping a first welding edge of the workpiece in a first direction; welding the first welding edge of the workpiece; transferring and rotating the workpiece to switch a second welding edge of the workpiece adjacent to the first welding edge to the first direction; positioning the workpiece again and keeping the second welding edge of the workpiece in the first direction; welding the second welding edge of the workpiece. When the first welding edge is kept in the first direction, the first welding edge of the workpiece can be welded; when the second welding edge is kept in the first direction, the second welding edge of the workpiece can be welded, so switching and rotating the workpiece can adjust the directions of the first welding edge and the second welding edge, thereby facilitating welding, reducing welding difficulty, and improving welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a welding device provided in some embodiments of the present application; Figure 2 A schematic diagram of the structure of a welding device provided in some other embodiments of the present application; Figure 3 A schematic diagram of the structure of a positioning mechanism provided in some embodiments of the present application; Figure 4 A schematic diagram of the structure of the positioning mechanism and the adjustment mechanism provided in some embodiments of the present application; Figure 5 A schematic diagram of the structure of a positioning mechanism provided in some other embodiments of the present application; Figure 6 for Figure 1 A partial enlarged view of the middle A area; Figure 7 A schematic diagram of the structure of a transfer mechanism provided in some embodiments of the present application; Figure 8 A schematic diagram of the structure of a welding mechanism provided in some embodiments of the present application; Fig. 9 A schematic diagram of the structure of a first clamp provided in some embodiments of the present application; Fig.10 A schematic diagram of the structure of a second clamp provided in some embodiments of the present application; Fig.11 A schematic diagram of the structure of a battery cell provided in some embodiments of the present application.

[0035] Icons: 1-first clamp; 11-first base; 12-first pressing mechanism; 121-first column; 1211-limiting member; 1212-slot; 122-first pressing swing arm; 1221-first pressing section; 1222-first hinged section; 1223-first connecting section; 123-first driving member; 2-second clamp; 21-second base; 22-second pressing mechanism; 221-second column; 222-second pressing swing arm; 2221-second pressing section; 2222-second hinged section; 2223-second connecting section; 223-first driving unit; 3-first drive assembly; 4-first guide rail; 5-second drive assembly; 10-positioning mechanism; 20-transfer mechanism; 201-clamping assembly; 2011-fifth driving member; 2012-first clamping portion; 2013-second clamping portion; 202-rotating assembly; 203-third driving assembly; 2031-sixth driving member; 2032-first mounting frame; 30-welding mechanism; 301-welding assembly; 302-fourth driving assembly; 3021-seventh driving member; 3022-eighth driving member; 3023-ninth driving member; 303-second guide rail; 40-first clamping mechanism; 401-second driving member; 402-first clamping portion; 50-adjusting mechanism; 501-third driving member; 502-push block; 60-second clamping mechanism; 601-fourth driving member; 602-second clamping portion; 100 - welding device; 200 - workpiece; 2001 - first welding edge; 2002 - second welding edge; 300 - battery cell; 3001 - housing; 3002 - end cover; X - first direction; Y - second direction; Z - third direction. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0038] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0039] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0040] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0041] The term “plurality” used in this application refers to two or more (including two).

[0042] When a workpiece is welded, a welding mechanism can be used to weld multiple welding edges of the workpiece. However, when welding the welding edges of the workpiece, in addition to considering the welding quality, the efficiency of the welding is also an issue that cannot be ignored.

[0043] Taking the square shell battery cell as an example, the battery cell includes an end cover and a shell with an opening. The end cover covers the opening of the shell, and the joint position between the end cover and the shell has two relatively long welding edges and two relatively short welding edges. The battery cell is placed on the welding station, and one of the long welding edge and the short welding edge is welded. After welding is completed, the battery cell can be manually rotated so that the other of the long welding edge and the short welding edge can be welded. Manual rotation of the battery cell is inefficient and has high labor costs.

[0044] In view of this, an embodiment of the present application provides a welding device, which is used for welding a workpiece, wherein the workpiece has a first welding edge and a second welding edge adjacent to each other, and the welding device includes a positioning mechanism, a transfer mechanism, and a welding mechanism. The positioning mechanism includes a first clamp and a second clamp arranged along a first direction, wherein the first clamp is used for clamping the workpiece to keep the first welding edge in the first direction; the second clamp is used for clamping the workpiece to keep the second welding edge in the first direction; the transfer mechanism is used for transferring the workpiece between the first clamp and the second clamp, and rotating the workpiece to switch the first welding edge or the second welding edge to the first direction; the welding mechanism is used for welding the first welding edge of the workpiece located in the first clamp, and welding the second welding edge of the workpiece located in the second clamp.

[0045] In such a welding device, the welding device can reduce manual operation when welding workpieces, reduce the difficulty of welding workpieces, and reduce the welding cost of workpieces.

[0046] The welding device is described in detail below with reference to the accompanying drawings.

[0047] Please refer to Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of a welding device 100 provided in some embodiments of the present application; Figure 2 The schematic diagram of the structure of the welding device 100 provided in some embodiments of the present application. The embodiment of the present application provides a welding device 100, which is used for welding a workpiece 200, the workpiece 200 has a first welding edge 2001 and a second welding edge 2002 adjacent to each other, and the welding device 100 includes a positioning mechanism 10, a transfer mechanism 20 and a welding mechanism 30. The positioning mechanism 10 includes a first clamp 1 and a second clamp 2 arranged along a first direction X, the first clamp 1 is used to clamp the workpiece 200 to keep the first welding edge 2001 in the first direction X; the second clamp 2 is used to clamp the workpiece 200 to keep the second welding edge 2002 in the first direction X; the transfer mechanism 20 is used to realize the transfer of the workpiece 200 between the first clamp 1 and the second clamp 2, and rotate the workpiece 200 to switch the first welding edge 2001 or the second welding edge 2002 to the first direction X; the welding mechanism 30 is used to weld the first welding edge 2001 of the workpiece 200 located in the first clamp 1, and weld the second welding edge 2002 of the workpiece 200 located in the second clamp 2.

[0048] The first clamp 1 and the second clamp 2 are arranged along the first direction X. The first clamp 1 and the second clamp 2 may be respectively arranged at two fixed positions, and the two fixed positions are arranged along the first direction X; one of the first clamp 1 and the second clamp 2 may move along the first direction X, and the other may be arranged at a fixed position; both the first clamp 1 and the second clamp 2 may move along the first direction X. The first clamp 1 and the second clamp 2 are both used to clamp the workpiece 200 to locate the workpiece 200 on the first clamp 1 and the second clamp 2.

[0049] The first welding edge 2001 is maintained in the first direction X, that is, the first welding edge 2001 has an extension direction, and the extension direction of the first welding edge 2001 is parallel to the first direction X. The second welding edge 2002 is maintained in the first direction X, that is, the second welding edge 2002 has an extension direction, and the extension direction of the second welding edge 2002 is parallel to the first direction X. It can be understood that the extension direction of the first welding edge 2001 and the extension direction of the second welding edge 2002 intersect.

[0050] The transfer mechanism 20 may transfer the workpiece 200 on the first fixture 1 to the second fixture 2; or the transfer mechanism 20 may transfer the workpiece 200 on the second fixture 2 to the first fixture 1. After picking up the workpiece 200 on the first fixture 1, the transfer mechanism 20 may rotate the workpiece 200 so that the second welding edge 2002 of the workpiece 200 is parallel to the first direction X, and then place the workpiece 200 on the second fixture 2; or after picking up the workpiece 200 on the second fixture 2, the transfer mechanism 20 may rotate the workpiece 200 so that the first welding edge 2001 of the workpiece 200 is parallel to the first direction X, and then place the workpiece 200 on the first fixture 1.

[0051] The transfer mechanism 20 can be fixedly arranged or movably arranged along the first direction X.

[0052] The welding mechanism 30 can weld the first welding edge 2001 of the workpiece 200 on the first fixture 1 and can weld the second welding edge 2002 of the workpiece 200 on the second fixture 2. The welding mechanism 30 can be moved along the first direction X to the welding position of the first fixture 1 or the second fixture 2 to achieve welding of the first welding edge 2001 or the second welding edge 2002; the first fixture 1 and the second fixture 2 can also be moved along the first direction X to the welding position of the welding mechanism 30 to achieve welding of the first welding edge 2001 or the second welding edge 2002.

[0053] In the embodiment of the present application, the positioning mechanism 10 can locate the position of the workpiece 200; the first fixture 1 and the second fixture 2 of the positioning assembly can locate the workpiece 200 in different states, so that the welding mechanism 30 can weld the first welding edge 2001 of the workpiece 200 located in the first fixture 1 and the second welding edge 2002 of the workpiece 200 located in the second fixture 2. The welding mechanism 30 can weld the first welding edge 2001 and the second welding edge 2002, which improves the performance of the welding mechanism 30. The transfer mechanism 20 can rotate the workpiece 200 on the first fixture 1 and transfer it to the second fixture 2, and can also rotate the workpiece 200 on the second fixture 2 and transfer it to the first fixture 1, which reduces manual operation, reduces the difficulty of welding processing of the workpiece 200, and reduces the welding processing cost of the workpiece 200.

[0054] In some embodiments, please refer to Figure 1-Figure 3 , Figure 3A schematic diagram of the structure of the positioning mechanism 10 provided in some embodiments of the present application. The first fixture 1 has a first welding station and a first transfer station, and the positioning mechanism 10 also includes a first drive assembly 3, the first drive assembly 3 is connected to the first fixture 1, and the first drive assembly 3 is configured to drive the first fixture 1 to move along the first direction X, so that the first fixture 1 switches between the first welding station and the first transfer station; the welding mechanism 30 is used to weld the first welding edge 2001 of the workpiece 200 on the first fixture 1 located at the first welding station, and the transfer mechanism 20 is used to pick up the workpiece 200 on the first fixture 1 located at the first transfer station.

[0055] The first welding station and the first transfer station are two stations where the first fixture 1 is arranged along the first direction X. The welding mechanism 30 can weld the first welding edge 2001 of the workpiece 200 on the first fixture 1 at the first welding station. The transfer mechanism 20 can pick up the workpiece 200 on the first fixture 1 at the first transfer station, or place the workpiece 200 on the first fixture 1 at the first transfer station.

[0056] The first drive assembly 3 can drive the first fixture 1 to move along the first direction X. The positioning mechanism 10 may further include a first guide rail 4, the first drive assembly 3 connects the first guide rail 4 and the first fixture 1; the first guide rail 4 extends along the first direction X, and the first drive assembly 3 is configured to drive the first fixture 1 to move along the first direction X on the first guide rail 4; wherein the first drive assembly 3 may be a linear motor.

[0057] In this embodiment, the first driving assembly 3 can drive the first fixture 1 to switch between the first welding station and the first transfer station to facilitate the transfer of the workpiece 200. The welding mechanism 30 and the transfer mechanism 20 can respectively weld the workpiece 200 at the first welding station and transfer the workpiece 200 at the first transfer station. The welding and transfer of the workpiece 200 are performed at different positions, which reduces the risk of interference between the welding mechanism 30 and the transfer mechanism 20.

[0058] In some embodiments, please refer to Figure 2 and Figure 3 The welding mechanism 30 and the positioning mechanism 10 are arranged along the second direction Y, and the second direction Y is perpendicular to the first direction X. The welding device 100 further includes a first clamping mechanism 40, which is used to clamp the workpiece 200 on the first fixture 1 at the first welding station along the second direction Y.

[0059] There can be one welding mechanism 30 , which is located on one side of the positioning mechanism 10 along the second direction Y; there can also be two welding mechanisms 30 , which are located on both sides of the positioning mechanism 10 along the second direction Y.

[0060] The first clamping mechanism 40 may be arranged with the first welding station along the third direction Z. The first clamping mechanism 40 may include a second driving member 401 and two first clamping portions 402, wherein the second driving member 401 connects the two first clamping portions 402, and the second driving member 401 is configured to drive the two first clamping portions 402 to move closer to or farther from each other along the second direction Y to clamp or release the workpiece 200.

[0061] In the embodiment where the workpiece 200 is a battery cell 300, after the end cover 3002 covers the opening of the shell 3001, the battery cell 300 can be placed on the first fixture 1 so that the opening of the shell 3001 is arranged toward the side away from the first clamping mechanism 40. The two first clamping parts 402 can clamp the shell 3001 of the battery cell 300 close to the end cover 3002, so that the opening of the shell 3001 can be in close contact with the end cover 3002, thereby improving the welding accuracy of the shell 3001 and the end cover 3002, and making the welding of the shell 3001 and the end cover 3002 more stable. Among them, the two first clamping parts 402 can be clamped to a position where the distance from the first welding edge 2001 is 2mm-5mm, so as to improve the contact effect between the shell 3001 and the end cover 3002, and the first welding edge 2001 is the edge formed at the junction of the shell 3001 and the end cover 3002.

[0062] In this embodiment, the workpiece 200 on the first fixture 1 located at the first welding station is clamped by the first clamping mechanism 40. The first clamping mechanism 40 can further limit the position of the workpiece 200 and improve the position stability of the workpiece 200, thereby improving the welding quality of the workpiece 200. The first clamping mechanism 40 clamps the side of the workpiece 200 facing the welding mechanism 30, so that the welding is more stable and the welding accuracy of the workpiece 200 is improved.

[0063] In some embodiments, please refer to Figure 1-Figure 4 , Figure 4 A schematic diagram of the structure of the positioning mechanism 10 and the adjustment mechanism 50 provided in some embodiments of the present application. The first fixture 1 also has a loading station, along the first direction X, the first welding station is located between the loading station and the first transfer station, the positioning mechanism 10 and the welding mechanism 30 are arranged along the second direction Y, and the second direction Y is perpendicular to the first direction X; the welding device 100 also includes an adjustment mechanism 50, the adjustment mechanism 50 is configured to adjust the workpiece 200 on the first fixture 1 at the loading station to a preset position along the second direction Y, and the first fixture 1 is configured to clamp the workpiece 200 at the preset position.

[0064] The unwelded workpiece 200 can be provided to the first fixture 1 located at the loading station; the position of the workpiece 200 on the first fixture 1 located at the loading station can also be adjusted by the adjustment mechanism 50.

[0065] There can be one adjusting mechanism 50, which moves the workpiece 200 along the second direction Y to adjust the workpiece 200 to a preset position; there can also be multiple adjusting mechanisms 50, which are located on both sides of the first fixture 1 along the second direction Y, and move the workpiece 200 together to adjust the workpiece 200 to a preset position.

[0066] The preset position is a position on the first fixture 1. When the first fixture 1 is located at any position, the first fixture 1 has a preset position for placing the workpiece 200. During the welding process of the workpiece 200, in order to directly weld the workpiece 200 after the workpiece 200 is loaded and transferred to the first welding station, it is necessary to locate the position of the workpiece 200 on the first fixture 1, so as to reduce the problem of poor welding caused by inconsistent welding focus of the workpiece 200.

[0067] It is understandable that when the adjustment mechanism 50 adjusts the position of the workpiece 200 on the first fixture 1 , the first fixture 1 does not clamp the workpiece 200 . After the workpiece 200 is adjusted to the preset position, the first fixture 1 clamps the workpiece 200 .

[0068] The adjustment mechanism 50 may include a third driving member 501 and a push block 502, wherein the third driving member 501 is connected to the push block 502, and the third driving member 501 is configured to drive the push block 502 to move toward the workpiece 200 along the second direction Y to push the workpiece 200. The third driving member 501 may be a cylinder.

[0069] In this embodiment, the workpiece 200 on the first fixture 1 is adjusted to a preset position by the adjustment mechanism 50 , thereby improving the position accuracy of the workpiece 200 on the first fixture 1 , thereby facilitating improving the welding accuracy of the workpiece 200 .

[0070] In some embodiments, please refer to Figure 5 , Figure 5 A schematic diagram of the structure of the positioning mechanism 10 provided for some other embodiments of the present application. The second fixture 2 has a second welding station and a second transfer station, and the positioning mechanism 10 also includes a second drive assembly 5, the second drive assembly 5 is connected to the second fixture 2, and the second drive assembly 5 is configured to drive the second fixture 2 to move along the first direction X, so that the second fixture 2 switches between the second welding station and the second transfer station; the transfer mechanism 20 is used to transfer the workpiece 200 to the second transfer station, and the welding mechanism 30 is used to weld the first welding edge 2001 of the workpiece 200 on the second fixture 2 located at the second welding station.

[0071] The second welding station and the second transfer station are arranged along the first direction X. The position of the first transfer station may overlap with the position of the second transfer station. After the transfer mechanism 20 picks up the workpiece 200 on the first fixture 1, the first fixture 1 leaves the first transfer station, the second fixture 2 enters the second transfer station, and the transfer mechanism 20 rotates the workpiece 200 and places it on the second fixture 2. The first transfer station and the second transfer station may also be arranged along the first direction X. After the transfer mechanism 20 picks up the workpiece 200 on the first fixture 1, the transfer mechanism 20 rotates the workpiece 200 so that the workpiece 200 reaches the second transfer workpiece 200, so as to place the workpiece 200 on the second fixture 2 located at the second transfer station.

[0072] The second drive assembly 5 can drive the second fixture 2 to move along the first direction X. The second drive assembly 5 connects the first guide rail 4 and the second fixture 2; the second drive assembly 5 is configured to drive the second fixture 2 to move along the first direction X on the first guide rail 4; wherein the second drive assembly 5 may be a linear motor.

[0073] In this embodiment, the second driving assembly 5 can drive the second fixture 2 to switch between the second welding station and the second transfer station to facilitate the transfer of the workpiece 200. The welding mechanism 30 and the transfer mechanism 20 can respectively weld the workpiece 200 at the second welding station and transfer the workpiece 200 at the second transfer station. The welding and transfer of the workpiece 200 are performed at different positions, which reduces the risk of interference between the welding mechanism 30 and the transfer mechanism 20.

[0074] In some embodiments, please refer to Figure 2 and Figure 6 , Figure 6 for Figure 1 A partial enlarged view of the area A in the middle. The welding mechanism 30 and the positioning mechanism 10 are arranged along the second direction Y, and the second direction Y is perpendicular to the first direction X; the welding device 100 also includes a second clamping mechanism 60, which is used to clamp the workpiece 200 on the second fixture 2 located at the second welding station along the second direction Y.

[0075] The second clamping mechanism 60 may be located above the second welding station. When the second clamp 2 is at the second welding station, the second clamping mechanism 60 can clamp the workpiece 200 along the second direction Y. The second clamping mechanism 60 may include a fourth driving member 601 and two second clamping portions 602. The fourth driving member 601 connects the two second clamping portions 602. The fourth driving member 601 is configured to drive the two second clamping portions 602 to move closer to or farther from each other along the second direction Y to clamp or release the workpiece 200.

[0076] In the embodiment where the workpiece 200 is a battery cell 300, after the end cover 3002 covers the opening of the shell 3001, the battery cell 300 can be placed on the second fixture 2 so that the opening of the shell 3001 is arranged toward the side away from the second clamping mechanism 60. The two second clamping parts 602 can clamp the shell 3001 of the battery cell 300 close to the end cover 3002, so that the opening of the shell 3001 can be in close contact with the end cover 3002, thereby improving the welding accuracy of the shell 3001 and the end cover 3002, and making the welding of the shell 3001 and the end cover 3002 more stable. Among them, the two second clamping parts 602 can be clamped to a position where the distance from the second welding edge 2002 is 2mm-5mm, so as to improve the contact effect between the shell 3001 and the end cover 3002, and the second welding edge 2002 is the edge formed at the junction of the shell 3001 and the end cover 3002.

[0077] In this embodiment, the workpiece 200 on the second fixture 2 located at the second welding station is clamped by the second clamping mechanism 60. The second clamping mechanism 60 can further limit the position of the workpiece 200 and improve the position stability of the workpiece 200, thereby improving the welding quality of the workpiece 200. The second clamping mechanism 60 clamps the side of the workpiece 200 facing the welding mechanism 30, making the welding more stable and improving the welding accuracy of the workpiece 200.

[0078] In some embodiments, when the welding mechanism 30 welds the workpiece 200, the workpiece located on the first fixture 1 or the second fixture 2 can move along the first direction X following the first fixture 1 or the second fixture 2, thereby adjusting the relative displacement of the welding assembly 301 and the workpiece 200 along the first direction X. The same-direction movement of the welding assembly 301 and the workpiece 200 along the first direction X is conducive to reducing the relative movement speed of the welding assembly 301 and the workpiece 200, thereby improving the strength of the welding assembly 301 welding the workpiece 200, and when the welding assembly 301 and the workpiece 200 move in the same direction toward the second fixture 2 along the first direction X, the processing time of the workpiece 200 can be reduced and the processing efficiency can be improved. The relative movement of the welding assembly 301 and the workpiece 200 along the first direction X is conducive to improving the welding speed and the processing efficiency of the workpiece 200.

[0079] In some embodiments, please refer to Figure 7 , Figure 7A schematic diagram of the structure of the transfer mechanism 20 provided in some embodiments of the present application. The welding mechanism 30 and the positioning mechanism 10 are arranged along the second direction Y, and the transfer mechanism 20 includes a clamping assembly 201, a rotating assembly 202 and a third driving assembly 203; the clamping assembly 201 is used to clamp the workpiece 200; the rotating assembly 202 is connected to the clamping assembly 201, and the rotating assembly 202 is used to drive the clamping assembly 201 to rotate around an axis extending along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other; the third driving assembly 203 is connected to the rotating assembly 202, and the third driving assembly 203 is configured to drive the rotating assembly 202 to move along the third direction Z.

[0080] The transfer mechanism 20 can be fixedly arranged, and the transfer mechanism 20 is located above the first transfer station and the second transfer station; or the transfer mechanism 20 can be movably arranged along the first direction X, and the transfer mechanism 20 switches between the first transfer station and the second transfer station.

[0081] The clamping assembly 201 may include a fifth driving member 2011, a first clamping portion 2012 and a second clamping portion 2013, the fifth driving member 2011 connecting the first clamping portion 2012 and the second clamping portion 2013, the fifth driving member 2011 being configured to drive the first clamping portion 2012 and the second clamping portion 2013 closer to or away from each other to clamp or release the workpiece 200; wherein the fifth driving member 2011 may be a cylinder.

[0082] The rotating assembly 202 may be connected to the fifth driving member 2011 and configured to drive the fifth driving member 2011 to rotate, thereby driving the workpiece 200 clamped by the first clamping portion 2012 and the second clamping portion 2013 to rotate around an axis extending along the third direction Z. The rotating assembly 202 may be a motor.

[0083] The third driving component 203 may include a sixth driving member 2031 and a first mounting frame 2032, the sixth driving member 2031 is connected to the first mounting frame 2032, the rotating component 202 is arranged on the first mounting frame 2032, and the sixth driving member 2031 is configured to drive the first mounting member to move along the third direction Z to drive the first clamping part 2012 and the second clamping part 2013 to clamp the workpiece 200 and move along the third direction Z.

[0084] In this embodiment, the clamping assembly 201 can clamp the workpiece 200 so as to pick up or place the workpiece 200; the rotating assembly 202 can rotate the clamping assembly 201 to adjust the state of the workpiece 200 clamped by the clamping assembly 201, and realize the switching of the orientation of the first welding edge 2001 and the second welding edge 2002; the third driving assembly 203 can drive the rotating assembly 202 to move along the third direction Z, so that the clamping assembly 201 is close to or away from the first fixture 1 or the second fixture 2 where the workpiece 200 is placed, reducing the risk of interference between the transfer mechanism 20 and the first fixture 1 or between the transfer mechanism 20 and the second fixture 2. The transfer mechanism 20 realizes the transfer of the workpiece 200 on the first fixture 1 and the second fixture 2, and realizes the state conversion of the workpiece 200, reduces manual operation, reduces the processing difficulty of the workpiece 200, and improves the welding processing efficiency of the workpiece 200.

[0085] In some embodiments, please refer to Figure 8 , Figure 8 A schematic diagram of the structure of a welding mechanism 30 provided in some embodiments of the present application. The welding mechanism 30 includes a welding assembly 301 and a fourth driving assembly 302; the welding assembly 301 is used to weld a first welding edge 2001 of a workpiece 200 located in a first fixture 1, and to weld a second welding edge 2002 of a workpiece 200 located in a second fixture 2; the fourth driving assembly 302 is connected to the welding assembly 301, and the fourth driving assembly 302 is used to drive the welding assembly 301 to move along a first direction X.

[0086] The first welding edge 2001 and the second welding edge 2002 both extend along the first direction X during welding. When the first fixture 1 is located at the first welding station, the fourth driving assembly 302 can drive the welding assembly 301 to move along the first direction X, so that the welding assembly 301 welds the first welding edge 2001 of the workpiece 200 located on the first fixture 1. When the second fixture 2 is located at the second welding station, the fourth driving assembly 302 can drive the welding assembly 301 to move along the first direction X, so that the welding assembly 301 welds the second welding edge 2002 of the workpiece 200 located on the second fixture 2. The fourth driving assembly 302 can also drive the welding assembly 301 to move along the first direction X, so that the fourth driving assembly 302 can switch between the first welding station and the second welding station.

[0087] The welding mechanism 30 further includes a second guide rail 303 , and the fourth driving assembly 302 can drive the welding assembly 301 to move along the first direction X on the second guide rail 303 .

[0088] In this embodiment, by setting the fourth driving component 302 to drive the welding component 301 to move along the first direction X, the welding component 301 can switch between the first clamp 1 and the second clamp 2 by moving to weld the workpiece 200 on the first clamp 1 or the second clamp 2, thereby reducing the welding difficulty of the workpiece 200.

[0089] In some embodiments, please refer to Figure 8 The fourth driving assembly 302 is further configured to drive the welding assembly 301 to move along the second direction Y and the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0090] The fourth driving assembly 302 may include a seventh driving member 3021, an eighth driving member 3022 and a ninth driving member 3023, the eighth driving member 3022 connects the seventh driving member 3021 and the ninth driving member 3023, the seventh driving member 3021 is connected to the second guide rail 303, the ninth driving member 3023 is connected to the welding assembly 301, and the ninth driving member 3023 is configured to drive the welding assembly 301 to move along the third direction Z to adjust the position of the welding assembly 301 along the third direction Z; the eighth driving member 3022 is configured to drive the ninth driving member 3023 to move along the second direction Y to adjust the position of the welding assembly 301 along the second direction Y, thereby adjusting the distance between the welding assembly 301 and the workpiece 200 to adapt to the welding focal length; the seventh driving member 3021 is configured to drive the eighth driving member 3022 to move along the first direction X to adjust the position of the welding assembly 301 along the first direction X.

[0091] In this embodiment, the welding assembly 301 can also move closer to or away from the welding position of the workpiece 200 along the second direction Y to adjust the welding distance of the workpiece 200; the welding assembly 301 can also move along the third direction Z to adjust the welding position of the workpiece 200 in the third direction Z, making it more convenient to adjust the welding position and welding focal length.

[0092] In some embodiments, please refer to Figure 8 The welding device 100 includes two welding mechanisms 30 , and the positioning mechanism 10 is disposed between the two welding mechanisms 30 along a second direction Y, and the second direction Y is perpendicular to the first direction X.

[0093] The two welding mechanisms 30 are located on both sides of the positioning mechanism 10 along the second direction Y. The two welding mechanisms 30 can move along the first direction X synchronously or independently.

[0094] In this embodiment, welding mechanisms 30 are provided on both sides of the positioning mechanism 10 along the second direction Y. The two welding mechanisms 30 can weld both sides of the workpiece 200 along the second direction Y at the same time, thereby improving the welding efficiency of the workpiece 200 .

[0095] In some embodiments, please refer to Fig. 9 , Fig. 9 The first clamp 1 is a schematic diagram of the structure of some embodiments of the present application. The first clamp 1 includes a first base 11 and a first pressing mechanism 12; the first base 11 is used to support the workpiece 200; the first pressing mechanism 12 is disposed on the first base 11, and the first pressing mechanism 12 is configured to press the workpiece 200 against the first base 11.

[0096] The workpiece 200 is placed on the first base 11 , and the first pressing mechanism 12 can press the workpiece 200 along the third direction Z, so that the first base 11 and the first pressing mechanism 12 cooperate to press the workpiece 200 .

[0097] Taking the workpiece 200 as a battery cell 300 as an example, the first welding edge 2001 and the second welding edge 2002 of the battery cell 300 need to extend along the first direction X during welding, and the first pressing mechanism 12 presses down the shell of the battery cell 300 along the third direction Z, which is conducive to pressing the end cover 3002 through the shell 3001, and improving the position stability of the end cover 3002 and the shell 3001 before welding. In addition, the shell and the end cover 3002 are arranged along the third direction Z, so that the first welding edge 2001 can extend along the first direction X, and the arrangement is more reasonable.

[0098] By setting the first base 11 and the first pressing mechanism 12 to cooperate and fix the workpiece 200, on the one hand, the position of the workpiece 200 is fixed, and on the other hand, pressing the workpiece 200 by pressing down helps to expose the first welding edge 2001 or the second welding edge 2002 along the second direction Y, thereby reducing the welding difficulty of the workpiece 200.

[0099] In some embodiments, please refer to Fig. 9 The first clamp 1 includes two first pressing mechanisms 12 , and the two first pressing mechanisms 12 are arranged along the first direction X.

[0100] The two first pressing mechanisms 12 are arranged along the first direction X, so that the first pressing mechanisms 12 can press the two sides of the workpiece 200 along the first direction X along the third direction Z, so that the position of the workpiece 200 on the first fixture 1 is more stable.

[0101] In this embodiment, the two first pressing mechanisms 12 can make the fixation of the workpiece 200 more stable and reduce the risk of the workpiece 200 escaping from the first fixture 1 .

[0102] In some embodiments, please refer to Fig. 9The first pressing mechanism 12 includes a first column 121, a first pressing swing arm 122 and a first driving member 123; one end of the first column 121 is connected to the first base 11; the first pressing swing arm 122 is rotatably disposed at one end of the first column 121 away from the first base 11; the first driving member 123 is connected to the first column 121, and the first driving member 123 is configured to drive the first pressing swing arm 122 to rotate so as to press the workpiece 200 against the first base 11.

[0103] The first base 11 is used to carry the workpiece 200 . In the embodiment where the workpiece 200 is a battery cell 300 , the end cover 3002 of the battery cell 300 contacts the first base 11 , and the first downward pressure swing arm 122 and the first base 11 clamp the end cover 3002 and the shell 3001 .

[0104] There may be one first column 121 . In the embodiment where there are two first pressing mechanisms 12 , each first pressing mechanism 12 includes one first column 121 , the two first columns 121 are disposed opposite to each other along the first direction X, and the workpiece 200 may be disposed between the two first columns 121 .

[0105] The first downward pressing swing arm 122 may include a first pressing section 1221, a first hinged section 1222 and a first connecting section 1223. The first hinged section 1222 connects the first pressing section 1221 and the first connecting section 1223. The first hinged section 1222 is disposed at one end of the first column 121 away from the first base 11. The first connecting section 1223 is connected to the first driving member 123. The first driving member 123 is used to drive the first connecting section 1223 to move, so as to drive the first pressing section 1221 to press the workpiece 200. The first driving member 123 may be a pneumatic telescopic rod.

[0106] In this embodiment, the first pressing arm 122 is driven to move by the first driving member 123, and the first pressing arm 122 can swing to press the workpiece 200 against the base, so that the fixing method of the workpiece 200 is more convenient.

[0107] In some embodiments, please refer to Fig. 9 The first column 121 is provided with a limiter 1211, and the limiter 1211 is provided with a slot 1212 for the workpiece 200 to be inserted into, and the slot 1212 is used to limit the range of movement of the workpiece 200 along the second direction Y; the first column 121 extends along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0108] The size of the slot 1212 along the second direction Y is larger than the size of the workpiece 200 along the second direction Y when on the first fixture 1. The workpiece 200 can move along the second direction Y in the slot 1212. The slot 1212 can limit the position of the workpiece 200 along the second direction Y so as to adjust the workpiece 200 to a preset position.

[0109] By providing the clamping groove 1212 , the clamping groove 1212 can limit the movement range of the workpiece 200 along the second direction Y, thereby reducing the risk of the workpiece 200 being separated from the first fixture 1 .

[0110] In some embodiments, please refer to Fig.10 , Fig.10 The second clamp 2 provided in some embodiments of the present application is a schematic diagram of the structure. The second clamp 2 includes a second base 21 and a second pressing mechanism 22; the second base 21 is used to support the workpiece 200; the second pressing mechanism 22 is disposed on the second base 21, and the second pressing mechanism 22 is configured to press the workpiece 200 against the second base 21.

[0111] The workpiece 200 is placed on the second base 21 , and the second pressing mechanism 22 can press the workpiece 200 along the third direction Z, so that the second base 21 and the second pressing mechanism 22 cooperate to press the workpiece 200 .

[0112] The second pressing mechanism 22 may be one or more.

[0113] Taking the workpiece 200 as a battery cell 300 as an example, the first welding edge 2001 and the second welding edge 2002 of the battery cell 300 need to extend along the first direction X during welding, and the second pressing mechanism 22 presses down the shell of the battery cell 300 along the third direction Z, which is conducive to pressing the end cover 3002 through the shell 3001, and improving the position stability of the end cover 3002 and the shell 3001 before welding. And the shell and the end cover 3002 are arranged along the third direction Z, so that the second welding edge 2002 can extend along the first direction X, and the arrangement is more reasonable.

[0114] By setting the second base 21 and the second pressing mechanism 22 to cooperate and fix the workpiece 200, on the one hand, the position of the workpiece 200 is fixed, and on the other hand, the workpiece 200 is pressed down, which helps to expose the first welding edge 2001 or the second welding edge 2002 along the second direction Y, thereby reducing the welding difficulty of the workpiece 200.

[0115] In some embodiments, please refer to Fig.10 The second clamp 2 includes two second pressing mechanisms 22 , and the two second pressing mechanisms 22 are arranged along the first direction X.

[0116] The two second pressing mechanisms 22 are arranged along the first direction X, so that the second pressing mechanisms 22 can press the two sides of the workpiece 200 along the first direction X along the third direction Z.

[0117] In this embodiment, the two second pressing mechanisms 22 can make the fixation of the workpiece 200 more stable and reduce the risk of the workpiece 200 escaping from the second fixture 2 .

[0118] In some embodiments, please refer to Fig.10 In some embodiments, the second pressing mechanism 22 includes a second column 221, a second pressing swing arm 222 and a first driving unit 223; one end of the second column 221 is connected to the second base 21; the second pressing swing arm 222 is rotatably disposed at one end of the second column 221 away from the second base 21; the first driving unit 223 is connected to the second column 221, and the first driving unit 223 is configured to drive the second pressing swing arm 222 to rotate so as to press the workpiece 200 against the second base 21.

[0119] The second base 21 is used to carry the workpiece 200 . In the embodiment where the workpiece 200 is a battery cell 300 , the end cover 3002 of the battery cell 300 contacts the second base 21 , and the second downward swing arm 222 and the second base 21 clamp the end cover 3002 and the shell 3001 .

[0120] There may be one second column 221 . In the embodiment where there are two second pressing mechanisms 22 , each second pressing mechanism 22 includes one second column 221 , and the two second columns 221 are disposed opposite to each other along the first direction X, and the workpiece 200 may be disposed between the two second columns 221 .

[0121] The second downward pressing swing arm 222 may include a second pressing section 2221, a second hinged section 2222, and a second connecting section 2223. The second hinged section 2222 connects the second pressing section 2221 and the second connecting section 2223. The second hinged section 2222 is disposed at one end of the second column 221 away from the second base 21. The second connecting section 2223 is connected to the first driving portion 223. The first driving portion 223 is used to drive the second connecting section 2223 to move, so as to drive the second pressing section 2221 to press the workpiece 200. The first driving portion 223 may be a pneumatic telescopic rod.

[0122] In this embodiment, the second pressing arm 222 is driven to move by the first driving part 223 , and the second pressing arm 222 can swing to press the workpiece 200 against the second base 21 , so that the fixing method of the workpiece 200 is more convenient.

[0123] In some embodiments, please refer to Fig.11 , Fig.11 The workpiece 200 is a battery cell 300, which includes a shell 3001 and an end cover 3002. The joint between the shell 3001 and the end cover 3002 has a first welding edge 2001 and a second welding edge 2002.

[0124] The combined position of the shell 3001 and the end cover 3002 has two first welding edges 2001 and two second welding edges 2002 arranged opposite to each other. The two first welding edges 2001 and the two second welding edges 2002 are surrounded to form a ring, and the opening is located in the ring area.

[0125] In this embodiment, the positioning mechanism 10 can position the shell 3001 and the end cover 3002 , and the welding mechanism 30 can weld the first welding edge 2001 and the second welding edge 2002 respectively to achieve welding of the shell 3001 and the end cover 3002 of the battery cell 300 .

[0126] An embodiment of the present application provides a welding method, which includes: positioning a workpiece 200 and keeping a first welding edge 2001 of the workpiece 200 in a first direction X; welding the first welding edge 2001 of the workpiece 200; transferring and rotating the workpiece 200 to switch a second welding edge 2002 of the workpiece 200 that is adjacent to the first welding edge 2001 to the first direction X; positioning the workpiece 200 again and keeping the second welding edge 2002 of the workpiece 200 in the first direction X; welding the second welding edge 2002 of the workpiece 200.

[0127] Take the method applied to the above welding device 100 and the workpiece 200 as a battery cell 300 as an example: The first clamp 1 is located at the loading station. After the end cover 3002 of the battery cell 300 is covered on the shell 3001, the battery cell 300 is placed on the first base 11 of the first clamp 1, and the end cover 3002 is located below the shell 3001; the battery cell 300 is adjusted to a preset position through the adjustment mechanism 50 so that the first welding edge 2001 of the battery cell 300 is parallel to the first direction X, and the battery cell 300 is pressed against the first base 11 through the first pressing mechanism 12.

[0128] The first clamp 1 moves to the first welding station along the first direction X, the first clamping mechanism 40 clamps the shell 3001 along the second direction Y, and the two welding assemblies 301 located on both sides of the positioning mechanism 10 along the second direction Y move along the first direction X under the driving action of the two fourth driving assemblies 302 respectively, so as to realize the welding of the two first welding edges 2001 of the battery cell 300.

[0129] The first fixture 1 moves to the first transfer station along the first direction X, the clamping assembly 201 clamps the workpiece 200 located on the first fixture 1, the third driving assembly 203 drives the first fixture 1 to lift along the third direction Z, the rotating assembly 202 rotates the clamping assembly 201 so that the second welding edge 2002 of the battery cell 300 is in the first direction X, the third driving assembly 203 descends along the third direction Z, and the clamping assembly 201 places the battery cell 300 on the second fixture 2 located at the second transfer station.

[0130] The second clamp 2 moves to the second welding station, and the second clamping mechanism 60 clamps the shell 3001 of the battery cell 300 along the second direction Y. The two welding assemblies 301 located on both sides of the positioning assembly along the second direction Y move along the first direction X under the driving action of the two fourth driving assemblies 302 respectively to realize the welding of the two second welding edges 2002 of the battery cell 300.

[0131] The second fixture 2 continues to move away from the second transfer station to the unloading station to remove the welded battery cell 300 .

[0132] In this embodiment, the positioning mechanism 10 can locate the position of the workpiece 200; the first fixture 1 and the second fixture 2 of the positioning assembly can locate the workpiece 200 in different states, so that the welding mechanism 30 can weld the first welding edge 2001 of the workpiece 200 located in the first fixture 1 and the second welding edge 2002 of the workpiece 200 located in the second fixture 2. The welding mechanism 30 can weld the first welding edge 2001 and the second welding edge 2002, which improves the performance of the welding mechanism 30. The transfer mechanism 20 can rotate the workpiece 200 on the first fixture 1 and transfer it to the second fixture 2, and can also rotate the workpiece 200 on the second fixture 2 and transfer it to the first fixture 1, which reduces manual operation, reduces the difficulty of welding processing of the workpiece 200, and reduces the welding processing cost of the workpiece 200. When the first welding edge 2001 is maintained in the first direction X, the first welding edge 2001 of the workpiece 200 can be welded; when the second welding edge 2002 is maintained in the first direction X, the second welding edge 2002 of the workpiece 200 can be welded. Therefore, switching and rotating the workpiece 200 can adjust the directions of the first welding edge 2001 and the second welding edge 2002, which is beneficial to welding, reduces welding difficulty, and improves welding accuracy.

[0133] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0134] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A welding device, the welding device is used for welding a workpiece, the workpiece having a first welding edge and a second welding edge adjacent to each other, characterized in that: The welding device comprises: A positioning mechanism, comprising a first clamp and a second clamp arranged along a first direction, wherein the first clamp is used to clamp the workpiece to keep the first welding edge in the first direction; and the second clamp is used to clamp the workpiece to keep the second welding edge in the first direction; A transfer mechanism, used to transfer the workpiece between the first fixture and the second fixture, and to rotate the workpiece to switch the first welding edge or the second welding edge to the first direction; The welding mechanism is used for welding the first welding edge of the workpiece located in the first fixture, and welding the second welding edge of the workpiece located in the second fixture.

2. The welding device according to claim 1, characterized in that The first fixture has a first welding station and a first transfer station, and the positioning mechanism further includes a first driving assembly, the first driving assembly is connected to the first fixture, and the first driving assembly is configured to drive the first fixture to move along the first direction, so that the first fixture switches between the first welding station and the first transfer station; The welding mechanism is used to weld the first welding edge of the workpiece on the first fixture located at the first welding station, and the transfer mechanism is used to pick up the workpiece on the first fixture located at the first transfer station.

3. The welding device according to claim 2, characterized in that: The welding mechanism and the positioning mechanism are arranged along a second direction, and the second direction is perpendicular to the first direction; The welding device further comprises a first clamping mechanism, and the first clamping mechanism is used for clamping the workpiece on the first clamp located at the first welding station along the second direction.

4. The welding device according to claim 2, characterized in that: The first fixture further comprises a loading station, and along the first direction, the first welding station is located between the loading station and the first transfer station, and the positioning mechanism and the welding mechanism are arranged along a second direction, and the second direction is perpendicular to the first direction; The welding device further includes an adjusting mechanism, which is configured to adjust the workpiece on the first clamp located at the loading station to a preset position along the second direction, and the first clamp is configured to clamp the workpiece located at the preset position.

5. The welding device according to claim 1, characterized in that: The second fixture has a second welding station and a second transfer station, and the positioning mechanism further includes a second driving assembly, the second driving assembly is connected to the second fixture, and the second driving assembly is configured to drive the second fixture to move along the first direction, so that the second fixture switches between the second welding station and the second transfer station; The transfer mechanism is used to transfer the workpiece to the second transfer station, and the welding mechanism is used to weld the first welding edge of the workpiece on the second fixture located at the second welding station.

6. The welding device according to claim 5, characterized in that The welding mechanism and the positioning mechanism are arranged along a second direction, and the second direction is perpendicular to the first direction; The welding device further comprises a second clamping mechanism, and the second clamping mechanism is used for clamping the workpiece on the second clamp located at the second welding station along the second direction.

7. The welding device according to claim 1, characterized in that: The welding mechanism and the positioning mechanism are arranged along the second direction, and the transfer mechanism includes: A clamping assembly, used for clamping the workpiece; A rotating assembly connected to the clamping assembly, the rotating assembly is used to drive the clamping assembly to rotate around an axis extending along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other; The third driving assembly is connected to the rotating assembly, and the third driving assembly is configured to drive the rotating assembly to move along the third direction.

8. The welding device according to claim 1, characterized in that: The welding mechanism comprises: A welding assembly, used for welding the first welding edge of the workpiece located in the first fixture, and welding the second welding edge of the workpiece located in the second fixture; A fourth driving assembly is connected to the welding assembly, and the fourth driving assembly is used to drive the welding assembly to move along the first direction.

9. The welding device according to claim 8, characterized in that The fourth driving assembly is further configured to drive the welding assembly to move along a second direction and a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

10. The welding device according to any one of claims 1 to 9, characterized in that: The welding device comprises two welding mechanisms, and the positioning mechanism is arranged between the two welding mechanisms along a second direction, and the second direction is perpendicular to the first direction.

11. The welding device according to any one of claims 1 to 9, characterized in that: The first fixture comprises: A first base, used to support the workpiece; The first pressing mechanism is disposed on the first base, and the first pressing mechanism is configured to press the workpiece against the first base.

12. The welding device according to claim 11, characterized in that The first clamp includes two first pressing mechanisms, and the two first pressing mechanisms are arranged along the first direction.

13. The welding device according to claim 11, characterized in that The first pressing mechanism comprises: A first column, one end of which is connected to the first base; A first downward swing arm, rotatably disposed at an end of the first column away from the first base; A first driving member is connected to the first column, and the first driving member is configured to drive the first pressing swing arm to rotate so as to press the workpiece against the first base.

14. The welding device according to claim 13, characterized in that The first column is provided with a limiting member, the limiting member is provided with a slot for the workpiece to be inserted into, and the slot is used to limit the range of movement of the workpiece along the second direction; The first column extends along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

15. The welding device according to any one of claims 1 to 9, characterized in that: The second fixture comprises: A second base, used for supporting the workpiece; The second pressing mechanism is disposed on the second base, and the second pressing mechanism is configured to press the workpiece against the second base.

16. The welding device according to claim 15, characterized in that The second clamp includes two second pressing mechanisms, and the two second pressing mechanisms are arranged along the first direction.

17. The welding device according to claim 15, characterized in that The second pressing mechanism comprises: A second column, one end of which is connected to the second base; A second downward swing arm is rotatably disposed at an end of the second column away from the second base; The first driving part is connected to the second column, and the first driving part is configured to drive the second pressing swing arm to rotate so as to press the workpiece against the second base.

18. The welding device according to any one of claims 1 to 9, characterized in that: The workpiece is a battery cell, and the battery cell includes a shell and an end cover. The joint position of the shell and the end cover has the first welding edge and the second welding edge.

19. A welding method, characterized in that: The method comprises: Positioning a workpiece and maintaining a first welding edge of the workpiece in a first direction; welding the first welding edge of the workpiece; Transferring and rotating the workpiece to switch a second welding edge of the workpiece disposed adjacent to the first welding edge to the first direction; repositioning the workpiece and maintaining the second welding edge of the workpiece in the first orientation; The second welding edge of the workpiece is welded.

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