Welding device and battery production equipment
By introducing detection and displacement components into the welding device, detecting the position of the end cover of the battery case and generating a welding trajectory curve, the sealing problem caused by the poor welding edge angle is solved, significantly reducing the welding scrap rate and improving the welding quality.
Patent Information
- Application Number
- CN202420164426.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-22
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-01-22
AI Technical Summary
During welding the metal battery case, the position deviation of the housing during the process of sending it to the welding station leads to a difference in the angle between the welding edge and the welding head, resulting in poor sealing and battery scrapping.
Design a welding device, including a frame, a welding assembly and a detection assembly, controls the movement of the welding head in the three directions of XYZ through the displacement assembly, and uses the detection unit and follow-up assembly to detect the position of the housing end cover to generate a welding track curve , ensure the accurate movement of the welded head along the welded seam.
By detecting and adjusting the position of the welding head, the probability of welding scrapping is significantly reduced, and the sealing and welding quality of the battery are improved.
Smart Images
Figure CN222344557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery production, in particular to a welding device and battery production equipment. Background Art
[0002] The outer shell used for general-purpose metal batteries is usually made by stamping, while the metal outer shell of larger power batteries (such as blade batteries) cannot be made by stamping. It is necessary to bend the metal plate to form the shell and end cover. There are two openings on the shell, which are arranged opposite to each other. Each opening is provided with an end cover, and the end cover is fixed to the shell by welding.
[0003] Before welding, the shell and the end cap need to be spliced and sent to the welding station, and then the welding head moves along the welding edge for welding. However, if the position of the shell is deviated during the process of being sent to the welding station, so that there is a certain angle difference between the welding edge of the shell and the welding axis of the welding head, the sealing between the shell and the end cap will be poor, and the battery will not work properly and be scrapped. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the utility model provides a welding device and a battery production equipment. The battery production equipment includes the welding device, which can reduce the probability of welding scrap.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] A welding device comprises a frame, on which a welding assembly and a detection assembly are provided, the welding assembly comprises a displacement assembly and a welding head, the welding head is arranged on the displacement assembly, the detection assembly comprises a detection unit and a follower assembly, the follower assembly comprises a mounting frame, a rotating shaft arranged on the mounting frame and a follower plate connected to the rotating shaft, the detection unit is electrically connected to the welding assembly, and the detection unit is used to detect the position of the follower plate and feed back the detection result to the welding assembly.
[0007] Furthermore, the displacement assembly includes an X-axis moving module, a Y-axis moving module arranged on the X-axis moving module, and a Z-axis moving module arranged on the Y-axis moving module. The welding head is arranged on the Z-axis moving module, and the displacement assembly is used to control the movement of the welding head in three directions of XYZ.
[0008] Furthermore, a support platform is provided on the frame, the detection component is arranged on the support platform, and a reset device is also provided on the support platform, and the reset device is used to reset the follower component.
[0009] Furthermore, the detection component also includes a bearing seat arranged on the mounting frame, a bearing is arranged in the bearing seat, and the rotating shaft is arranged on the outer periphery of the bearing.
[0010] Furthermore, the reset device includes a reset drive device and a reset plate connected to the reset drive device, and an adaptive clamping structure is provided between the reset plate and the bearing seat.
[0011] Furthermore, a limiting protrusion is provided on the reset plate, an adjustment plate is provided on the side of the bearing away from the rotating shaft, a limiting groove adapted to the limiting protrusion is provided on the adjustment plate, and the limiting groove and the limiting protrusion constitute the clamping structure.
[0012] Furthermore, the detection units are provided with two groups, and the two groups of detection units are arranged on both sides of the follower component.
[0013] Furthermore, a positioning device is provided on the frame, and the positioning device includes a rotation drive device and a mounting plate. The output shaft of the rotation drive device is connected to the mounting plate. The mounting plate is provided with a through hole and a positioning component. The positioning component is distributed in a ring shape with the through hole as the center. The through hole is used for the outer shell to pass through, and the positioning component is used to clamp the outer shell.
[0014] Furthermore, the positioning assembly includes a positioning plate and a clamping assembly, the positioning plate is fixed on the mounting plate, and the clamping assembly is provided with three groups, and the three groups of clamping assemblies and positioning plates are distributed in a ring shape with the through hole as the center.
[0015] The utility model also provides a battery production device, comprising the welding device as described above.
[0016] The beneficial effects of the utility model are:
[0017] The utility model provides a welding device and a battery production equipment. The battery production equipment comprises the welding device. The welding device detects the position of the shell end cover by setting a follower plate and a detection unit and feeds back the result to a welding assembly. The displacement assembly in the welding assembly controls the movement of the welding head along the position of the welding seam, which can reduce the probability of welding scrap. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0019] Figure 1 It is an overall schematic diagram of the welding device in the utility model;
[0020] Figure 2 yes Figure 1 A is an enlarged schematic diagram;
[0021] Figure 3 It is a schematic diagram of the detection component in the utility model;
[0022] Description of reference numerals:
[0023] 1. Frame; 2. Support table; 20. Detection unit; 21. Mounting frame; 210. Rotating axis; 211. Bearing seat; 212. Bearing; 2120. Adjusting plate; 2121. Limiting groove; 213. Follower plate; 2130. Groove; 3. Welding head; 30. X-axis moving module; 31. Y-axis moving module; 32. Z-axis moving module; 4. Reset drive device; 40. Reset plate; 401. Limiting protrusion; 5. Rotating drive device; 50. Mounting plate; 51. Clamping assembly. DETAILED DESCRIPTION
[0024] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.
[0025] Reference Figures 1 to 3 The utility model provides a welding device for welding battery shells. In this embodiment, the welding of blade batteries is taken as an example for description.
[0026] Reference Figure 1 As shown, the welding device includes a frame 1, on which a welding assembly and a support table 2 are arranged, and the welding assembly includes a displacement assembly and a welding head 3, and the welding head 3 is arranged on the displacement assembly. In this embodiment, the displacement assembly includes an X-axis moving module 30, a Y-axis moving module 31 arranged on the X-axis moving module 30, and a Z-axis moving module 32 arranged on the Y-axis moving module 31, and the welding head 3 is arranged on the Z-axis moving module 32, and the displacement assembly is used to control the movement of the welding head 3 in three directions of X, Y, and Z.
[0027] The support platform 2 is provided with a detection assembly and a reset device, the detection assembly includes a detection unit 20 and a follower assembly, the follower assembly includes a mounting frame 21, a rotating shaft 210 disposed on the mounting frame 21, and a follower plate 213 fixedly connected to the rotating shaft 210, the detection unit 20 is electrically connected to the welding assembly, and the detection unit 20 is used to detect the position of the follower plate 213 and feed the position back to the welding assembly. In this embodiment, the detection assembly also includes a bearing seat 211 disposed on the mounting frame 21, a bearing 212 is disposed in the bearing seat 211, and the rotating shaft 210 is disposed on the outer periphery of the bearing 212.
[0028] In practical applications, a slide rail mechanism perpendicular to the welding station should be provided at the bottom of the support platform, and the support platform can move along the slide rail mechanism to approach or move away from the welding station.
[0029] In this embodiment, a protruding structure (not shown) is provided on the end cover of the battery shell to be welded, so a groove 2130 for avoiding the protruding structure is provided at the end of the follower plate 213. The welding device of the utility model is provided with a shell placement position. During operation, the shell is sent to the shell placement position until the protruding structure on the shell end cover is inserted into the groove 2130 on the follower plate 213 to achieve the positioning of the shell. If the position of the shell is offset during the process of being sent to the shell placement position, an offset force will be generated during the process of the protruding structure and the groove 2130 cooperating, and the follower plate 213 is fixedly connected to the rotating shaft 210 and can rotate under the action of the offset force. The angle of rotation is the offset angle of the shell.
[0030] In this embodiment, the detection unit 20 is provided with two groups, and the two groups of detection units 20 are arranged on both sides of the follower assembly, which are used to detect the positions on both sides of the follower plate 213, process the positions on both sides of the follower plate 213 and generate a welding trajectory curve, and then feed the welding trajectory curve back to the welding assembly. The welding assembly controls the welding head 3 to move according to the trajectory curve to finally complete the welding.
[0031] The reset device includes a reset drive device 4 and a reset plate 40 connected to the reset drive device 4, and an adaptive clamping structure is provided between the reset plate 40 and the bearing seat 211. In this embodiment, the reset drive device 4 adopts a cylinder. Further, a limiting protrusion 401 is provided on the reset plate 40, and an adjustment plate 2120 is provided on the side of the bearing 212 away from the rotating shaft 210, and a limiting groove 2121 adapted to the limiting protrusion 401 is provided on the adjustment plate 2120, and the limiting groove 2121 is arranged horizontally, and the limiting groove 2121 and the limiting protrusion 401 form the clamping structure.
[0032] Combined with the above, it can be known that when the shell is sent to the shell placement position, it will drive the follower plate 213 to rotate together. The function of the reset device is to restore the follower plate 213 in the follower assembly to the initial position. When the previous shell is welded and the shell is removed, the reset drive device 4 in the reset device drives the reset plate 40 to move toward the adjustment plate 2120, so that the limiting protrusion 401 and the limiting groove 2121 are in a clamping state. Since the limiting groove 2121 is set horizontally, the force generated during the clamping process can make the bearing 212 rotate to a vertical state, thereby driving the follower plate 213 to return to the initial position.
[0033] Furthermore, the frame 1 is also provided with a positioning device, which includes a rotating drive device 5 and a mounting plate 50. The output shaft of the drive device is connected to the mounting plate 50. The mounting plate 50 is provided with a through hole and a positioning component. The positioning component is distributed in a ring shape with the through hole as the center. The through hole is used for the outer shell to pass through, and the positioning component is used to clamp the outer shell.
[0034] The positioning assembly includes a positioning plate (not shown) and a clamping assembly 51. The positioning plate is fixed on the mounting plate 50. The clamping assembly 51 is provided in three groups. The three groups of clamping assemblies 51 and positioning plates are distributed in a ring shape with the through hole as the center.
[0035] During operation, the housing is passed through the through hole, and then the positioning assembly clamps and positions the housing, and then the welding device is used to weld. Since the positioning assembly is arranged on the mounting plate 50, when the first weld on the housing is welded, the mounting plate 50 is driven to rotate by the rotary drive device 5, and the mounting plate 50 drives the positioning assembly and the housing to rotate together, thereby reducing repeated positioning and fixing operations and ensuring accurate welding.
[0036] The welding process of the battery casing is described here:
[0037] There are four welding edges between the battery shell and the end cover. When welding, the shell is placed on the positioning plate through the through hole, the clamping assembly is controlled to clamp the battery, and the welding head is cooperated to weld the first welding edge of the shell. After the first welding edge is welded, the rotation drive device 5 is controlled to rotate 90° clockwise, and the clamping assembly 51 rotates with the rotation drive device 5 and keeps the shell clamped to weld the second welding edge; after the second welding edge is welded, the rotation drive device 5 is controlled to continue to rotate 90° clockwise to weld the third welding edge of the shell; after the third welding edge is welded, the rotation drive device 5 is controlled to rotate 90° clockwise to weld the fourth welding edge of the shell; after the fourth welding edge is welded, the rotation drive device 5 is controlled to rotate 270° counterclockwise to return to the initial position, and then the clamping assembly 51 is controlled to open and remove the shell, and the welding of one shell is completed.
[0038] Combining the welding device of the utility model with the welding process of the battery shell, the working principle is as follows:
[0039] First, the support platform 2 is controlled to move along the slide rail mechanism toward the welding station to the set position, and the battery shell is placed into the shell placement position along the through hole until the shell end cover is plugged into the follower plate 213, and the positioning assembly is controlled to clamp the battery, and the detection unit 20 detects the position of the follower plate 213, and feeds back the trajectory curve generated after processing the detection result to the welding assembly, and the welding assembly controls the welding head 3 to move according to the trajectory curve to complete the welding work of the first welding edge; the support platform 2 is controlled to move along the slide rail mechanism in a direction away from the welding station, so that the limiting protrusion 401 in the reset mechanism and the limiting groove 2121 of the adjustment plate 2120 are disengaged from the reset, and the rotation drive device 5 is controlled to drive the shell to rotate. After rotating into place, the support platform 2 is controlled to move in the opposite direction toward the welding station along the slide rail mechanism until it is positioned between the follower plate 213 and the shell end cover. The detection unit 20 once again processes the detection result into a trajectory curve and feeds it back to the welding assembly, and the welding work of the second welding edge is continued; the above steps are repeated until the welding work of the shell is completed.
[0040] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.
Claims
1. A welding device, characterized in that: The invention comprises a frame (1), wherein a welding assembly and a detection assembly are arranged on the frame (1), wherein the welding assembly comprises a displacement assembly and a welding head (3), wherein the welding head (3) is arranged on the displacement assembly, wherein the detection assembly comprises a detection unit (20) and a follower assembly, wherein the follower assembly comprises a mounting frame (21), a rotating shaft (210) arranged on the mounting frame (21), and a follower plate (213) connected to the rotating shaft (210), wherein the detection unit (20) is electrically connected to the welding assembly, and wherein the detection unit (20) is used to detect the position of the follower plate (213) and to feed back the detection result to the welding assembly.
2. A welding device according to claim 1, characterized in that: The displacement assembly comprises an X-axis moving module (30), a Y-axis moving module (31) arranged on the X-axis moving module (30), and a Z-axis moving module (32) arranged on the Y-axis moving module (31); the welding head (3) is arranged on the Z-axis moving module (32); and the displacement assembly is used to control the movement of the welding head (3) in three directions of X, Y, and Z.
3. A welding device according to claim 1, characterized in that: A support platform (2) is provided on the frame (1), the detection component is arranged on the support platform (2), and a reset device is also provided on the support platform (2), and the reset device is used to reset the follower component.
4. A welding device according to claim 3, characterized in that: The detection assembly further comprises a bearing seat (211) arranged on the mounting frame (21), a bearing (212) being arranged in the bearing seat (211), and the rotating shaft (210) being arranged on the outer periphery of the bearing (212).
5. A welding device according to claim 4, characterized in that: The reset device comprises a reset drive device (4) and a reset plate (40) connected to the reset drive device (4), and an adaptive clamping structure is provided between the reset plate (40) and the bearing seat (211).
6. A welding device according to claim 5, characterized in that: A limiting protrusion (401) is provided on the reset plate (40); an adjustment plate (2120) is provided on a side of the bearing (212) away from the rotating shaft (210); a limiting groove (2121) adapted to the limiting protrusion (401) is provided on the adjustment plate (2120); the limiting groove (2121) and the limiting protrusion (401) form the clamping structure.
7. A welding device according to claim 1, characterized in that: The detection units (20) are provided in two groups, and the two groups of detection units (20) are arranged on both sides of the follower component.
8. A welding device according to claim 1, characterized in that: The frame (1) is also provided with a positioning device, the positioning device comprising a rotary drive device (5) and a mounting plate (50), the output shaft of the rotary drive device (5) being connected to the mounting plate (50), the mounting plate (50) being provided with a through hole and a positioning component, the positioning component being distributed in a ring shape with the through hole as the center, the through hole being used for allowing the outer shell to pass through, and the positioning component being used for clamping the outer shell.
9. A welding device according to claim 8, characterized in that: The positioning assembly comprises a positioning plate and a clamping assembly (51), wherein the positioning plate is fixedly mounted on the mounting plate (50), and the clamping assembly (51) is provided with three groups, wherein the three groups of the clamping assemblies (51) and the positioning plates are distributed in a ring shape with the through hole as the center.
10. A battery production device, characterized in that: Comprising the welding device according to any one of claims 1 to 9.