High-efficiency welding device for blade battery shell production
Patent Information
- Application Number
- CN202610536376.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-22
- Publication Date
- 2026-05-29
Smart Images
Figure CN122099732A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of blade battery casing welding technology, specifically to a high-efficiency welding device for the production of blade battery casings. Background Technology
[0002] Blade battery casings are typically made from open aluminum tubes using an aluminum extrusion molding process. These tubes have a wall thickness of only 0.3-0.8 mm and a length of 600-2000 mm, exhibiting typical structural characteristics of being long, thin, and narrow. Welding the bottom of the casing to the base plate is a crucial step in ensuring the battery's airtightness.
[0003] However, due to the high coefficient of thermal expansion and rapid thermal conductivity of aluminum alloys, coupled with the extremely poor rigidity of the casing itself, localized high temperatures during welding can easily induce significant welding thermal deformation, manifesting as warping at the casing ends, concavity of the sidewalls, or overall bending. Welding deformation not only leads to weld dimensional deviations and affects subsequent electrode assembly insertion, but also induces internal defects such as porosity and hot cracking, severely reducing the battery's sealing reliability and structural strength. To control deformation, existing processes often require reducing welding speed or employing segmented welding, but this significantly sacrifices production efficiency. Furthermore, a straightening process is required after welding, further lengthening the production cycle. In addition, thin-walled casings are extremely sensitive to welding heat input, with a narrow process window; even slight power fluctuations or positioning deviations can cause insufficient penetration or burn-through, resulting in batch defects.
[0004] Therefore, it is necessary to provide a high-efficiency welding apparatus for the production of blade battery casings to solve the above problems. Summary of the Invention
[0005] The purpose of this invention is to provide a high-efficiency welding device for the production of blade battery casings, which can achieve fast and continuous high-efficiency welding while ensuring welding quality, thereby improving the manufacturing yield and production capacity of blade battery casings and solving the problems mentioned in the background art.
[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-efficiency welding device for the production of blade battery casings, comprising a welding mechanism and several welding clamping mechanisms, wherein the several welding clamping mechanisms are equidistantly arranged on one side of the welding mechanism, and the welding clamping mechanisms are used to clamp the open aluminum tube and the base plate to be welded and to perform quality inspection on the blade battery casings before and after welding. The welding clamping mechanism includes a second bracket, a clamping assembly, and two sets of detection assemblies. The clamping assembly is located on the periphery of the second bracket, and the detection assemblies are located on the second bracket. The two sets of detection assemblies are located at both ends of the clamping assembly. The detection assemblies are used to detect both ends of the open aluminum tube, assist in positioning the base plate to be welded, and perform welding sealing tests on the welded blade battery casing. The detection assembly includes a cylinder, a rotating plate, a lifting back plate, a pressure sensor, and several suction cups. The lifting back plate is L-shaped and hollow. An air port is provided on the short side of the L-shape of the lifting back plate, and several air ports are provided on the long side of the L-shape of the lifting back plate. The suction cups are fixedly connected to the air ports. The pressure sensor is fixed to the side of the lifting back plate, and the air ports penetrate the pressure sensor. The air inlet is connected to a dual-purpose air pump via a pipeline, and a pressure sensor is installed on the pipeline connecting the air inlet and the dual-purpose air pump.
[0007] According to the above technical solution, the welding mechanism includes a support and a welding assembly. The welding assembly is mounted on the support and includes two sets of single-axis moving seats, a lifting part, a second single-axis moving seat, and a welding head. The two sets of single-axis moving seats are mounted on the top of the support, and the lifting part is mounted on the single-axis moving seat and slidably connected to the top of the single-axis moving seat.
[0008] According to the above technical solution, the lifting unit includes a gantry frame, a hydraulic cylinder, a lifting plate, and a rotating platform. The gantry frame is mounted on two sets of single-axis moving seats and slidably connected to the top of the single-axis moving seats. The hydraulic cylinder is fixed to the top of the gantry frame, and the output end of the hydraulic cylinder passes through the top of the gantry frame and is fixedly connected to the lifting plate. An extension column is fixedly connected to the bottom center of the lifting plate, and a connecting seat is fixedly connected to the bottom of the extension column. The connecting seat is L-shaped, and the rotating platform is fixed to the side of the connecting seat.
[0009] According to the above technical solution, the second single-axis movable seat is fixed to the side of the first rotating platform. The second single-axis movable seat is provided with a second connecting seat on its side. The second connecting seat is slidably connected to the second single-axis movable seat. The second connecting seat is L-shaped. The second rotating platform is provided on the second connecting seat. The second rotating platform includes a rotating end and a driving end. The rotating end of the second rotating platform is located on the side of the second connecting seat away from the second single-axis movable seat. The rotating end of the second rotating platform is rotatably connected to the second connecting seat. The driving end of the second rotating platform is located on the side of the second connecting seat close to the second single-axis movable seat. The driving end of the second rotating platform is fixedly connected to the second connecting seat. The output end of the driving end of the second rotating platform passes through the second connecting seat.
[0010] According to the above technical solution, a multi-axis movable seat is fixedly connected to the rotating end of the rotating table 2, and the welding head is set on the multi-axis movable seat.
[0011] According to the above technical solution, the clamping assembly includes a top clamping part and a bottom support part. The top clamping part includes a connecting seat three, two sets of cylinders one, a pressure block and a top pressure plate. The connecting seat three is fixed to the side of the bracket two. The two sets of cylinders one are fixed to the top of both ends of the connecting seat three. The top of the cylinder one is hinged to the end of the pressure block. The bottom of the pressure block is also hinged to a connecting arm. The other end of the connecting arm is hinged to the top of the bracket two. The top pressure plate is fixed to the bottom of the end of the pressure block away from the cylinder one.
[0012] According to the above technical solution, the bottom support includes a second cylinder, a connecting frame, two sets of lifting columns and a bottom pressure plate. The second cylinder is fixed at the bottom of the second support. The connecting frame is fixedly connected to the output end of the second cylinder. The two sets of lifting columns are fixed at both ends of the connecting frame. The lifting columns are installed through the top of the second support. The bottom pressure plate is located above the top of the second support and is fixedly connected to the top of the two sets of lifting columns.
[0013] According to the above technical solution, the cylinder three is fixed at the bottom of the bracket two, the output end of the cylinder three passes through the top of the bracket two, the output end of the cylinder three is fixedly connected to a lifting plate, the top of the lifting plate is slidably connected to a sliding seat, the sliding seat is provided with a notch, the rotating plate is disposed in the notch, the rotating plate is rotatably connected to the sliding seat, the side of the sliding seat is fixedly connected to a motor, the output end of the motor passes through the sliding seat, and the output end of the motor is fixedly connected to the rotating plate.
[0014] According to the above technical solution, a cylinder four is fixedly connected to the rotating plate, the short side of the L-shaped lifting back plate is fixedly connected to the output end of the cylinder four, the long side of the L-shaped lifting back plate is parallel to the cylinder four, and the number and position of the suction cups and the air ports two correspond to each other.
[0015] According to the above technical solution, a cooling pipe is fixedly connected to the side of the pressure block near the support, and the cooling pipe is connected to an air pump.
[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting a welding clamping mechanism, can clamp the top and bottom of the open aluminum tube. It can also utilize a suction cup, pressure sensor, air pressure sensor and dual-purpose air pump to work together to achieve auxiliary positioning by suction adsorption of the base plate, and to achieve airtightness detection by inflating or deflating the inside of the aluminum tube. At the same time, the pressure sensor can detect deformation after it is attached to the end of the aluminum tube. It realizes multiple uses of one device, reduces process changeover time and equipment space occupation, and achieves fast and continuous high-efficiency welding while ensuring welding quality, thereby improving the manufacturing yield and production capacity of blade battery shells. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the welding mechanism of the present invention; Figure 3 This is a partial structural schematic diagram of the welding mechanism of the present invention; Figure 4 This is a schematic diagram of the welding clamping mechanism of the present invention; Figure 5 This is a cross-sectional schematic diagram of the welding clamping mechanism of the present invention; Figure 6 This is the invention Figure 5 Enlarged structural diagram of region A in the middle; In the diagram: 1. Support 1; 2. Welding assembly; 21. Single-axis moving seat 1; 22. Lifting unit; 221. Gantry frame; 222. Hydraulic cylinder; 223. Lifting plate; 224. Extension column; 225. Connecting seat 1; 226. Rotating table 1; 23. Single-axis moving seat 2; 24. Connecting seat 2; 25. Rotating table 2; 26. Multi-axis moving seat; 27. Welding head; 3. Support 2; 4. Clamping assembly; 41. Connecting seat 3; 4 2. Cylinder 1; 43. Pressure Block; 44. Top Pressure Plate; 45. Cylinder 2; 46. Connecting Frame; 47. Lifting Column; 48. Bottom Pressure Plate; 5. Detection Components; 51. Cylinder 3; 52. Lifting Plate; 53. Sliding Seat; 531. Notch; 54. Motor; 55. Rotating Plate; 56. Cylinder 4; 57. Lifting Back Plate; 571. Air Port 1; 572. Air Port 2; 58. Pressure Sensor; 59. Suction Cup; 6. Cooling Pipeline. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] Please see Figure 1-6 The present invention provides a technical solution: a high-efficiency welding device for the production of blade battery casings, comprising a welding mechanism and several welding clamping mechanisms. The several welding clamping mechanisms are equidistantly arranged on one side of the welding mechanism. The welding mechanism is used to weld the open aluminum tube and the base plate on the welding clamping mechanism. The welding clamping mechanism is used to clamp the open aluminum tube and the base plate to be welded and to perform quality inspection on the blade battery casings before and after welding.
[0020] Specifically, such as Figure 2 and Figure 3 As shown, the welding mechanism includes a support 1 and a welding assembly 2. The welding assembly 2 is mounted on the support 1. The welding assembly 2 includes two sets of single-axis moving seats 21, a lifting part 22, a second single-axis moving seat 23, and a welding head 27. The two sets of single-axis moving seats 21 are mounted on the top of the support 1. The lifting part 22 is mounted on the single-axis moving seat 21 and slidably connected to the top of the single-axis moving seat 21. The two sets of single-axis moving seats 21 are used to drive the lifting part 22 to move along the setting direction of the single-axis moving seat 21.
[0021] Furthermore, such as Figure 2 As shown, the lifting unit 22 includes a gantry frame 221, a hydraulic cylinder 222, a lifting plate 223, and a rotating platform 226. The gantry frame 221 is mounted on two sets of single-axis moving seats 21 and is slidably connected to the top of the single-axis moving seats 21. The hydraulic cylinder 222 is fixed to the top of the gantry frame 221. The output end of the hydraulic cylinder 222 passes through the top of the gantry frame 221 and is fixedly connected to the lifting plate 223. An extension column 224 is fixedly connected to the bottom center of the lifting plate 223. A connecting seat 225 is fixedly connected to the bottom of the extension column 224. The connecting seat 225 is L-shaped. The rotating platform 226 is fixed to the side of the connecting seat 225. The extension and retraction of the hydraulic cylinder 222 is used to synchronously drive the extension column 224, the connecting seat 225, and the rotating platform 226 on the side of the connecting seat 225 to rise and fall synchronously, thereby adjusting the height of the rotating platform 226.
[0022] Specifically, such as Figure 2 and Figure 3 As shown, a single-axis movable seat 23 is fixed to the side of a rotating platform 226. A connecting seat 24 is provided on the side of the single-axis movable seat 23. The connecting seat 24 is slidably connected to the single-axis movable seat 23. The connecting seat 24 is L-shaped. A rotating platform 25 is provided on the connecting seat 24. The rotating platform 25 includes a rotating end and a driving end. The rotating end of the rotating platform 25 is located on the side of the connecting seat 24 away from the single-axis movable seat 23. The rotating end of the rotating platform 25 is rotatably connected to the connecting seat 24. The driving end of the rotating platform 25 is located on the side of the connecting seat 24 close to the single-axis movable seat 23. The driving end of the rotating platform 25 is fixedly connected to the connecting seat 24. The output end of the driving end of the rotating platform 25 passes through the connecting seat 24. The output end of the rotating platform 25 uses planetary gear transmission to drive the rotating end of the rotating platform 25 to rotate.
[0023] A multi-axis movable seat 26 is fixedly connected to the rotating end of the rotating table 25. The welding head 27 is set on the multi-axis movable seat 26. The rotating table 226 is used to drive the single-axis movable seat 23 to rotate in a plane parallel to the gantry frame 221. The single-axis movable seat 23 is used to drive the connecting seat 24, the rotating table 25, the multi-axis movable seat 26 and the welding head 27 to move along the setting direction of the single-axis movable seat 23. The rotating table 25 is used to drive the multi-axis movable seat 26 to rotate along the circumferential direction of the rotating end of the rotating table 25. The multi-axis movable seat 26 is used to fine adjust the position of the welding head 27 within the spatial range. The multi-axis movable seat 26 needs to be able to adjust the up and down, left and right, front and back positions of the welding head 27 and the pitch angle of the welding head 27. The welding head 27 is used to weld the open aluminum tube and the base plate.
[0024] It should be noted that the single-axis moving seat 1 21 and the single-axis moving seat 23 can be driven by a driving method according to actual needs. For example, the single-axis moving seat 1 21 is driven by a motor screw drive, the single-axis moving seat 23 is driven by a cylinder drive, and the multi-axis moving seat 26 is driven by several cylinders in different directions.
[0025] Specifically, such as Figures 3-6 As shown, the welding clamping mechanism includes a second bracket 3, a clamping assembly 4, and two sets of detection assemblies 5. The clamping assembly 4 is located on the periphery of the second bracket 3, and the detection assemblies 5 are located on the second bracket 3. The two sets of detection assemblies 5 are located at both ends of the clamping assembly 4. The clamping assembly 4 is used to clamp the top and bottom of the open aluminum tube to be welded. The detection assemblies 5 are used to detect the two ends of the open aluminum tube, assist in positioning the base plate to be welded, and perform welding seal test on the welded blade battery casing.
[0026] Furthermore, such as Figure 4 As shown, the clamping assembly 4 includes a top clamping part and a bottom support part. The top clamping part includes a connecting seat 3 41, two sets of cylinders 1 42, a pressure block 43, and a top pressure plate 44. The connecting seat 3 41 is fixed to the side of the bracket 2 3. The two sets of cylinders 1 42 are fixed to the top of both ends of the connecting seat 3 41. The top of the cylinders 1 42 is hinged to the end of the pressure block 43. The bottom of the pressure block 43 is also hinged to a connecting arm. The other end of the connecting arm is hinged to the top of the bracket 2 3. The top pressure plate 44 is fixed to the bottom of the end of the pressure block 43 away from the cylinders 1 42. When the cylinders 1 42 extend, the pressure block 43 at the end of the connecting arm near the cylinders 1 42 tends to move upward, and the end of the pressure block 43 away from the cylinders 1 42 tends to move downward, until the top pressure plate 44 is in a horizontal state, thus clamping the open aluminum tube. When cylinder 42 retracts, the pressure block 43 at the end of the connecting arm near cylinder 42 moves downward and the end of the pressure block 43 away from cylinder 42 moves upward until the top pressure plate 44 is in a vertical state, releasing the clamping of the open aluminum tube.
[0027] Furthermore, such as Figure 4 and Figure 5 As shown, the bottom support includes a second cylinder 45, a connecting frame 46, two sets of lifting columns 47, and a bottom pressure plate 48. The second cylinder 45 is fixed to the bottom of the second bracket 3. The connecting frame 46 is fixedly connected to the output end of the second cylinder 45. The two sets of lifting columns 47 are fixed to both ends of the connecting frame 46. The lifting columns 47 are installed through the top of the second bracket 3. The bottom pressure plate 48 is located above the top of the second bracket 3. The bottom pressure plate 48 is fixedly connected to the top of the two sets of lifting columns 47. When the second cylinder 45 extends, it drives the connecting frame 46 and the two sets of lifting columns 47 on the connecting frame 46 to rise. Simultaneously, it drives the bottom pressure plate 48 at the top of the two sets of lifting columns 47 to rise, thereby driving the open aluminum tube at the top of the bottom pressure plate 48 to move upward until the top of the open aluminum tube contacts the bottom of the top pressure plate 44. The bottom pressure plate 48 and the top pressure plate 44 clamp the top and bottom of the open aluminum tube. Conversely, cylinder 2 45 retracts, causing the connecting frame 46 and the two sets of lifting columns 47 on the connecting frame 46 to descend, simultaneously causing the bottom pressure plate 48 at the top of the two sets of lifting columns 47 to descend, thereby causing the open aluminum tube at the top of the bottom pressure plate 48 to move downward until the bottom of the bottom pressure plate 48 contacts the top of bracket 2 3.
[0028] Specifically, such as Figures 4-5 As shown, the detection component 5 includes a cylinder 51, a rotating plate 55, a lifting back plate 57, a pressure sensor 58, and several suction cups 59. The cylinder 51 is fixed to the bottom of the bracket 3, and its output end passes through the top of the bracket 3. A lifting plate 52 is fixedly connected to the output end of the cylinder 51. A sliding seat 53 is slidably connected to the top of the lifting plate 52. A notch 531 is provided on the sliding seat 53, and the rotating plate 55 is disposed in the notch 531. The rotating plate 55 is rotatably connected to the sliding seat 53. A motor 54 is fixedly connected to the side of the slide plate 52. The output end of the motor 54 passes through the slide base 53 and is fixedly connected to the rotating plate 55. The output end of the motor 54 and the rotating plate 55 are coaxial at the rotational connection point on the slide base 53. A drive device is provided on the slide base 53 for driving the slide base 53 to slide on the top of the lifting plate 52. The drive device is not shown in the figure. The motor 54 is used to drive the rotating plate 55 to rotate alternately in the circumferential direction along the rotational connection point between the rotating plate 55 and the slide base 53.
[0029] A cylinder 4 56 is fixedly connected to the rotating plate 55. The lifting back plate 57 is L-shaped and hollow. The short side of the L-shape of the lifting back plate 57 is fixedly connected to the output end of the cylinder 4 56. An air port 1 571 is provided on the short side of the L-shape of the lifting back plate 57. The long side of the L-shape of the lifting back plate 57 is parallel to the cylinder 4 56. Several air ports 2 572 are provided on the long side of the L-shape of the lifting back plate 57. Several suction cups 59 correspond to the number and position of several air ports 2 572. The suction cups 59 are fixedly connected to the air ports 2 572. The pressure sensor 58 is fixed on the side of the lifting back plate 57. The air ports 2 572 pass through the pressure sensor 58. Air inlet 571 is connected to a dual-purpose air pump via a pipeline. A pressure sensor is installed on the pipeline connecting air inlet 571 and the dual-purpose air pump. When the dual-purpose air pump is started to evacuate air, it can create a negative pressure state at one end of suction cup 59 to evacuate air from the open aluminum tube, thereby reducing the air pressure inside the open aluminum tube, or it can cause suction cup 59 to adhere to the base plate and position the base plate. When the dual-purpose air pump is started to inflate air, it can inflate air into the open aluminum tube through suction cup 59, thereby increasing the air pressure inside the open aluminum tube.
[0030] It should be noted that one side of several welding clamping mechanisms is also equipped with robots for picking up and placing open aluminum tubes and picking up base plates; it also includes a visual positioning mechanism composed of several cameras. The visual positioning mechanism is used to capture the position of the positioned open aluminum tube and base plate through the cameras, and then identify the position of the open aluminum tube and base plate in the captured image and feed it back to the welding mechanism and welding clamping mechanism. After adjusting the position and angle of the welding head 27, the welding head 27 welds the open aluminum tube and base plate to form the blade battery casing.
[0031] In actual operation, after the robot places the open aluminum tube on the bottom pressure plate 48, cylinder 1 42 and cylinder 2 45 start to extend, so that the top pressure plate 44 and the bottom pressure plate 48 clamp the top and bottom of the open aluminum tube. After the vision positioning mechanism obtains the position of the open aluminum tube, it feeds back to the welding clamping mechanism. The motor 54 of the two sets of detection components 5 is controlled to start to rotate forward, driving the rotating plate 55 to drive cylinder 4 56 to rotate towards the open aluminum tube, so that cylinder 4 56 is in a vertical state. Then, the cylinder 4 56 is controlled to start to extend and retract, adjusting the height of the lifting back plate 57 so that all the suction cups 59 can be located in the opening of the open aluminum tube. Then, the drive device of the sliding seat 53 is controlled to start, adjusting the position of the sliding seat 53 on the lifting plate 52 so that the pressure sensor 58 is attached to the end of the open aluminum tube. The pressure sensor 58 detects pressure data and keeps it within a certain pressure range. At this time, the shape of the two ends of the open aluminum tube can be obtained by obtaining the position where the pressure sensor 58 detects pressure data, and then the deformation of the end of the open aluminum tube can be judged. Then, the dual-purpose air pump is started to inflate the air, increasing the air pressure inside the open aluminum tube to a certain high pressure state. After maintaining the pressure for a certain period of time, the dual-purpose air pump is started to evacuate the air, reducing the air pressure inside the open aluminum tube to a certain low pressure state and maintaining the pressure for a certain period of time. During this process, the air pressure sensor continuously acquires the pressure data inside the open aluminum tube, thereby obtaining the airtightness of the open aluminum tube.
[0032] It should be noted that the pressure data for both high-pressure and low-pressure states during this process are set by the staff according to actual needs. If the pressure inside the open aluminum tube fails to reach the set high-pressure or low-pressure state during this process, it may be caused by pipeline leakage or abnormal sealing at the end of the open aluminum tube. If the data detected by the two sets of pressure sensors deviate significantly during this process, it indicates that the pressure sensors are malfunctioning.
[0033] Then, the motors 54 controlling the two sets of detection components 5 start to reverse, driving the rotating plate 55 to rotate the cylinder 4 56 away from the open aluminum tube, so that the cylinder 4 56 is in a horizontal state. Then, the robot is controlled to place the base plate on several suction cups 59 of the detection component 5 near the bracket 1. Then, the dual-purpose air pump connected to the suction cup 59 is controlled to start to pump air, using negative pressure to adsorb the base plate.
[0034] Then, the detection component 5 near the bracket 1 is controlled to operate, that is, the motor 54 is controlled to start rotating forward, driving the rotating plate 55 to drive the cylinder 4 56 to rotate towards the direction of the open aluminum tube, so that the cylinder 4 56 is in a vertical state. Then the drive device of the sliding seat 53 is controlled to start, and the position of the sliding seat 53 on the lifting plate 52 is adjusted so that the bottom plate adsorbed by the lifting back plate 57 is attached to the end of the open aluminum tube. Then the welding mechanism drives the welding head 27 to weld the open aluminum tube and the bottom plate to form the blade battery shell. The dual-purpose air pump of this group is changed to air filling, so that the suction cup 59 releases the adsorption of the bottom plate. Then, control the detection component 5, which is far away from the support 1, to operate. Then, control the motor 54 to start rotating forward, drive the rotating plate 55 to drive the cylinder 4 56 to rotate towards the open aluminum tube, so that the cylinder 4 56 is in a vertical state. Then, control the drive device of the sliding seat 53 to start, adjust the position of the sliding seat 53 on the lifting plate 52, so that the pressure sensor 58 is in contact with the end of the open aluminum tube, and re-perform the airtightness test.
[0035] Specifically, such as Figure 4 As shown, a cooling pipe 6 is fixedly connected to the side of the pressure block 43 near the bracket 1. The cooling pipe 6 is connected to an air pump, which is not shown in the figure. When the air pump is started, it can introduce cold air into the welding area to cool the welding area.
[0036] It should be noted that both bracket 1 and welding assembly 2 are equipped with casters at the bottom to facilitate the movement of bracket 1 and welding assembly 2.
[0037] Welding method of high-efficiency welding equipment for blade battery casing production: Step 1: Clamping and positioning of the open aluminum tube: The robot places the open aluminum tube to be welded on the bottom pressure plate 48 of the welding clamping mechanism. Then, cylinder 1 42 starts to extend, driving the top pressure plate 44 to rotate downward to a horizontal state; at the same time, cylinder 2 45 starts to extend, driving the bottom pressure plate 48 to move upward. The bottom pressure plate 48 lifts the open aluminum tube, so that its top contacts the bottom of the top pressure plate 44, thereby forming a stable clamping between the top and bottom of the open aluminum tube by the bottom pressure plate 48 and the top pressure plate 44.
[0038] Step 2: Visual positioning: A visual positioning mechanism consisting of several cameras acquires the position information of the open aluminum tube. After identification, the position of the open aluminum tube is obtained and fed back to the welding mechanism and welding clamping mechanism for subsequent adjustment of the position and angle of the welding head 27.
[0039] Step 3: Pre-welding inspection of the end shape and airtightness of the open aluminum tube: First, control the motor 54 of the two sets of detection components 5 to start rotating forward, driving the rotating plate 55 to rotate the cylinder 4 56 towards the open aluminum tube, so that the cylinder 4 56 is in a vertical position; then, control the extension and retraction of the cylinder 4 56, adjust the height of the lifting back plate 57, so that all the suction cups 59 enter the opening of the open aluminum tube; then, start the drive device of the sliding seat 53, adjust the position of the sliding seat 53 on the lifting plate 52, so that the pressure sensor 58 fixed on the side of the lifting back plate 57 is in close contact with the end of the open aluminum tube; the pressure sensor 58 detects the contact pressure data and maintains it within the set pressure range; by obtaining the position of the effective pressure data detected by the pressure sensor 58, the actual shape of both ends of the open aluminum tube can be identified, thereby determining whether there is deformation at the end of the open aluminum tube.
[0040] After completing the end shape inspection, an airtightness test is performed: the dual-purpose air pump is started to inflate the tube, and air is injected into the open aluminum tube through the suction cup 59 to raise the air pressure inside the tube to the high pressure state preset by the operator, and the pressure is maintained for a certain period of time; then the dual-purpose air pump is started to evacuate the tube, and the air pressure inside the tube is lowered to the set low pressure state, and the pressure is maintained again for a certain period of time; throughout the entire inflation, pressure holding, evacuation and pressure holding process, the air pressure sensor installed on the pipeline connecting the air port 571 and the dual-purpose air pump continuously acquires the pressure data inside the open aluminum tube; based on the changes in pressure data, the integrity of the open aluminum tube itself and its end seal is evaluated; if the pressure inside the tube cannot reach the set high or low pressure value, it may indicate that there is a leak in the pipeline or an abnormality in the end seal of the open aluminum tube; if the data detected by the air pressure sensors of the two sets of detection components 5 deviate significantly, it indicates that the pressure sensor 58 itself is abnormal.
[0041] Step 4: Reset of Detection Components and Placement of Base Plate: After completing the pre-welding inspection, control the motors 54 of the two sets of detection components 5 to start reversing, driving the rotating plate 55 to rotate the cylinder 56 away from the open aluminum tube, so that the cylinder 56 returns to a horizontal state, making room for the subsequent placement of the base plate; then, the robot places the base plate to be welded on several suction cups 59 of the detection component 5 near the bracket 1, and then controls the dual-purpose air pump connected to the suction cup 59 to start pumping air, so that one end of the suction cup 59 generates negative pressure, thereby firmly adsorbing the base plate and realizing the auxiliary positioning of the base plate.
[0042] Step 5: Fit the base plate with the end of the open aluminum tube: Control the detection component 5 near bracket 1 to operate. First, start the motor 54 to rotate forward, driving the rotating plate 55 to rotate the cylinder 4 56 towards the open aluminum tube, so that the cylinder 4 56 is in a vertical position again; then start the drive device of the sliding seat 53, adjust the position of the sliding seat 53 on the lifting plate 52, so that the base plate adsorbed by the suction cup 59 fits tightly with the end of the open aluminum tube, and prepare for welding.
[0043] Step Six: Welding and Cooling: Based on the positional information fed back by the visual positioning mechanism, the welding mechanism adjusts the spatial position and angle of the welding head 27, and then starts welding head 27 to weld the open aluminum tube to the base plate, forming a complete blade battery casing. After welding is completed, the dual-purpose air pump of the detection component 5 is switched to inflation mode, causing the suction cup 59 to release its adhesion to the base plate. At the same time, the inflation pump connected to the cooling pipeline 6 is started, introducing cold air into the weld area to rapidly cool the weld.
[0044] Step 7: Post-weld airtightness test: After welding is completed and cooled, the detection component 5, which is far away from the support 1, is controlled to perform a post-weld airtightness test. The detection component 5 first starts the motor 54 to rotate forward, so that the cylinder 4 56 rotates to a vertical position. Then, the position of the sliding seat 53 is adjusted so that the pressure sensor 58 is in contact with the end of the open aluminum tube. Then, the airtightness test operation in step 3 is repeated, that is, first inflating to a high pressure state and holding the pressure, then evacuating to a low pressure state and holding the pressure. At the same time, the pressure sensor continuously monitors the pressure data. By comparing the airtightness data before and after welding, the overall sealing quality of the blade battery shell after welding is evaluated, and it is determined whether there are any defects in the welding.
[0045] It should be noted that in step seven, a cooling device can be added to the connecting pipe between the suction cup 59 and the dual-purpose air pump. During the process of first pressurizing the open aluminum tube, the cooling device can be activated to lower the temperature of the gas entering the open aluminum tube. Then, the temperature of the open aluminum tube can be lowered through heat transfer, further promoting the cooling of the weld. After welding is completed, the welding component 2 is controlled to move the welding head 27 to correspond to different sets of welding clamping components and perform welding operations. This can make full use of the cooling and inspection time after the blade battery shell is welded, improving the continuity and efficiency of welding.
[0046] After all the above steps, the welding and quality inspection of the blade battery casing are completed, and it can be cut into materials or transferred to subsequent processes.
[0047] The above methods enable efficient welding that is fast and continuous, while ensuring welding quality, thereby improving the manufacturing yield and production capacity of blade battery casings.
[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A high-efficiency welding apparatus for producing blade battery casings, comprising a welding mechanism and several welding clamping mechanisms, characterized in that, Several of the aforementioned welding clamping mechanisms are equidistantly arranged on one side of the welding mechanism. The welding clamping mechanisms are used to clamp the open aluminum tube and the base plate to be welded and to perform quality inspection on the blade battery casing before and after welding. The welding clamping mechanism includes a second bracket (3), a clamping assembly (4), and two sets of detection assemblies (5). The clamping assembly (4) is located on the periphery of the second bracket (3), and the detection assembly (5) is located on the second bracket (3). The two sets of detection assemblies (5) are located at both ends of the clamping assembly (4). The detection assembly (5) is used to detect the two ends of the open aluminum tube, assist in positioning the base plate to be welded, and perform welding sealing tests on the welded blade battery casing. The detection component (5) includes a cylinder (51), a rotating plate (55), a lifting back plate (57), a pressure sensor (58), and several suction cups (59). The lifting back plate (57) is L-shaped and hollow. The short side of the L-shape of the lifting back plate (57) is provided with an air port (571), and the long side of the L-shape of the lifting back plate (57) is provided with several air ports (572). The suction cups (59) are fixedly connected to the air ports (572). The pressure sensor (58) is fixed to the side of the lifting back plate (57), and the air ports (572) pass through the pressure sensor (58). The air inlet (571) is connected to a dual-purpose air pump via a pipeline, and a pressure sensor is installed on the pipeline connecting the air inlet (571) and the dual-purpose air pump.
2. The high-efficiency welding device for producing blade battery casings according to claim 1, characterized in that, The welding mechanism includes a support (1) and a welding assembly (2). The welding assembly (2) is mounted on the support (1). The welding assembly (2) includes two sets of single-axis moving seats (21), a lifting part (22), a single-axis moving seat (23), and a welding head (27). The two sets of single-axis moving seats (21) are mounted on the top of the support (1). The lifting part (22) is mounted on the single-axis moving seat (21) and is slidably connected to the top of the single-axis moving seat (21).
3. The high-efficiency welding device for producing blade battery casings according to claim 2, characterized in that, The lifting unit (22) includes a gantry frame (221), a hydraulic cylinder (222), a lifting plate (223), and a rotating platform (226). The gantry frame (221) is mounted on two sets of single-axis moving seats (21) and is slidably connected to the top of the single-axis moving seats (21). The hydraulic cylinder (222) is fixed on the top of the gantry frame (221). The output end of the hydraulic cylinder (222) passes through the top of the gantry frame (221) and is fixedly connected to the lifting plate (223). An extension column (224) is fixedly connected to the bottom center of the lifting plate (223). A connecting seat (225) is fixedly connected to the bottom of the extension column (224). The connecting seat (225) is L-shaped. The rotating platform (226) is fixed to the side of the connecting seat (225).
4. The high-efficiency welding device for producing blade battery casings according to claim 3, characterized in that, The single-axis moving seat 2 (23) is fixed on the side of the rotating platform 1 (226). The side of the single-axis moving seat 2 (23) is provided with a connecting seat 2 (24). The connecting seat 2 (24) is slidably connected to the single-axis moving seat 2 (23). The connecting seat 2 (24) is L-shaped. The rotating platform 2 (25) is provided on the connecting seat 2 (24). The rotating platform 2 (25) includes a rotating end and a driving end. The rotating end of the rotating platform 2 (25) is located on the side of the connecting seat 2 (24) away from the single-axis moving seat 2 (23). The rotating end of the rotating platform 2 (25) is rotatably connected to the connecting seat 2 (24). The driving end of the rotating platform 2 (25) is located on the side of the connecting seat 2 (24) close to the single-axis moving seat 2 (23). The driving end of the rotating platform 2 (25) is fixedly connected to the connecting seat 2 (24). The output end of the driving end of the rotating platform 2 (25) passes through the connecting seat 2 (24).
5. The high-efficiency welding device for producing blade battery casings according to claim 4, characterized in that, The rotating end of the rotating platform (25) is fixedly connected to a multi-axis moving seat (26), and the welding head (27) is set on the multi-axis moving seat (26).
6. The high-efficiency welding device for producing blade battery casings according to claim 5, characterized in that, The clamping assembly (4) includes a top clamping part and a bottom support part. The top clamping part includes a connecting seat three (41), two sets of cylinders one (42), a pressure block (43) and a top pressure plate (44). The connecting seat three (41) is fixed to the side of the bracket two (3). The two sets of cylinders one (42) are fixed to the top of both ends of the connecting seat three (41). The top of the cylinders one (42) is hinged to the end of the pressure block (43). The bottom of the pressure block (43) is also hinged to a connecting arm. The other end of the connecting arm is hinged to the top of the bracket two (3). The top pressure plate (44) is fixed to the bottom of the end of the pressure block (43) away from the cylinders one (42).
7. The high-efficiency welding device for producing blade battery casings according to claim 6, characterized in that, The bottom support includes a second cylinder (45), a connecting frame (46), two sets of lifting columns (47) and a bottom pressure plate (48). The second cylinder (45) is fixed at the bottom of the second bracket (3). The connecting frame (46) is fixedly connected to the output end of the second cylinder (45). The two sets of lifting columns (47) are fixed at both ends of the connecting frame (46). The lifting columns (47) are installed through the top of the second bracket (3). The bottom pressure plate (48) is located above the top of the second bracket (3). The bottom pressure plate (48) is fixedly connected to the top of the two sets of lifting columns (47).
8. The high-efficiency welding device for producing blade battery casings according to claim 7, characterized in that, The cylinder three (51) is fixed at the bottom of the bracket two (3). The output end of the cylinder three (51) passes through the top of the bracket two (3). The output end of the cylinder three (51) is fixedly connected to the lifting plate (52). The top of the lifting plate (52) is slidably connected to the sliding seat (53). The sliding seat (53) is provided with a notch (531). The rotating plate (55) is set in the notch (531). The rotating plate (55) is rotatably connected to the sliding seat (53). The side of the sliding seat (53) is fixedly connected to the motor (54). The output end of the motor (54) passes through the sliding seat (53). The output end of the motor (54) is fixedly connected to the rotating plate (55).
9. The high-efficiency welding device for producing blade battery casings according to claim 8, characterized in that, A cylinder four (56) is fixedly connected to the rotating plate (55). The short side of the L-shaped lifting back plate (57) is fixedly connected to the output end of the cylinder four (56). The long side of the L-shaped lifting back plate (57) is parallel to the cylinder four (56). The number and position of the suction cups (59) and the air ports (572) correspond.
10. A high-efficiency welding device for producing blade battery casings according to claim 9, characterized in that, A cooling pipe (6) is fixedly connected to the side of the pressure block (43) near the support (1), and the cooling pipe (6) is connected to an air pump.