Square aluminum shell battery laser welding and detecting integrated equipment
By using heat dissipation and fixation techniques on the cover plate of the square aluminum-cased battery during the welding process, the problem of thermal deformation during welding was solved, ensuring welding quality and the integrity of the battery structure.
Patent Information
- Application Number
- CN202511294993.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2025-10-31
AI Technical Summary
When welding square aluminum-cased batteries, traditional welding equipment is prone to thermal deformation and structural damage due to the thinness of the casing and cover material, which affects the dimensional accuracy and appearance quality of the battery.
During the welding process, a retaining sleeve is used to spray gas onto the square aluminum shell and cover plate for heat dissipation, and a suction cup is used to fix the cover plate to prevent structural damage caused by heat concentration, while also checking the strength of the weld quality.
It effectively prevents structural damage caused by heat during welding, ensures welding quality and product precision, maintains airtightness, and prevents material leakage and intrusion of external impurities.
Smart Images
Figure CN120862067A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of laser welding and inspection technology, specifically to an integrated device for laser welding and inspection of square aluminum-cased batteries. Background Technology
[0002] The integrated laser welding and inspection equipment for square aluminum-cased batteries is an advanced manufacturing equipment specifically designed for the production process of square aluminum-cased batteries. It integrates laser welding technology with multiple inspection technologies to achieve seamless connection between the welding process and the quality inspection process in battery production, thereby improving production efficiency, ensuring product quality, and reducing production costs. During the traditional welding process of clamping and welding the square aluminum shell and the top cover plate, the thin material of the square aluminum shell battery shell and the cover plate can easily lead to local thermal deformation, affecting the dimensional accuracy and appearance quality of the battery, and may even cause damage to the internal structure of the square aluminum shell battery. Summary of the Invention
[0003] The purpose of this invention is to provide an integrated laser welding and inspection device for square aluminum-cased batteries. By closing the valve, the gas is no longer transmitted to the inside of the spring through the air inlet. Instead, the gas is concentrated and transmitted to the nozzles on both sides of the air inlet. The fixed sleeve sprays the gas onto the square aluminum casing and the cover plate to dissipate heat from the square aluminum casing and the cover plate. This prevents the laser welding method from generating a large amount of heat during the welding process, which could damage the internal structure of the square aluminum-cased battery.
[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated laser welding and inspection device for square aluminum-shell batteries, comprising a welding platform and a turntable rotating on the welding platform. A welding assembly is installed on the welding platform, the welding assembly including a cylinder. A fixed frame is connected to the output end of the cylinder. A fixed sleeve is fixedly installed on one side of the fixed frame. A fixed rod is fixedly installed inside the fixed sleeve. One end of the fixed rod is connected to an air inlet. Both sides of the air inlet are connected to nozzles. A telescopic rod is slidably installed inside the fixed rod. A suction cup is fixedly installed at one end of the telescopic rod. Gears are slidably connected to both sides of the telescopic rod. A rack meshes with one side of the gears. A movable disk is fixedly connected to one end of the rack. Clamps are fixedly installed around the movable disk and on one side of the turntable. A piston block is fixedly connected to one side of the movable disk. A piston tube is installed on the outer surface of the piston block. One end of the piston tube is connected to one side of the suction cup.
[0005] Preferably, a laser welding arm is installed on the welding platform, and a motor is installed inside the welding platform, with the output end of the motor connected to one side of the turntable.
[0006] Preferably, each set of clamps is provided with a fixing frame, a fixing screw is slidably installed on the fixing frame, and a clamping plate is fixedly installed at one end of the fixing screw.
[0007] Preferably, the cylinder is fixedly mounted on the welding platform, a blower is connected to one end of the air inlet, and a valve is provided on the air inlet.
[0008] Preferably, a spring is fixedly connected inside the fixed rod, one end of the spring is fixedly connected to one end of the telescopic rod, and one end of the telescopic rod passes through the inside of the fixed sleeve.
[0009] Preferably, the telescopic rod has toothed grooves on both sides, the two sets of telescopic rods respectively mesh with one side of the gear, the fixed sleeve has grooves on both sides, the gear is rotatably installed in the grooves, and the movable disk is slidably connected to the outer surface of the fixed sleeve.
[0010] Preferably, a piston rod is fixedly connected to the movable disk, one end of the piston rod passes through one side of the piston tube, and the other end of the piston rod is fixedly mounted on the piston block.
[0011] Preferably, one end of the piston tube extends through one side of the movable disk, and a connecting pipe is connected to one side of the piston tube, which is connected to one side of the suction cup.
[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, after the telescopic rod drives the suction cup to be fixed on the cover plate, by closing the valve, the gas is no longer transmitted to the inside of the spring through the air inlet. Instead, the gas is concentrated and transmitted to the nozzles on both sides of the air inlet. The fixing sleeve sprays the gas onto the square aluminum shell and the cover plate to dissipate heat from the square aluminum shell and the cover plate. This prevents the welding method of the laser welding machine from generating a large amount of heat during the welding process, which could damage the internal structure of the square aluminum shell battery.
[0013] 2. In this invention, when the construction personnel start the blower connected to one end of the air inlet and open the valve on the air inlet, the blower transmits gas to the inside of the fixed rod through the air inlet. Then, the gas compresses the telescopic rod to move downward, and the telescopic rod drives the suction cup to move downward, so that the suction cup applies pressure to the cover plate and fixes the cover plate to the square aluminum shell. This prevents the welding position deviation from being caused by inaccurate workpiece positioning or insecure clamping during welding, which would affect the welding quality and product precision.
[0014] 3. In this invention, the piston block is stretched inside the piston tube, and gas is drawn from inside the suction cup through a connecting pipe at one end of the piston tube, making the suction cup more firmly fix the cover plate. After welding is completed, the construction personnel start the cylinder, and the cylinder retracts. The cylinder drives the fixing plate to stretch through the fixing frame, spring, telescopic rod, and suction cup. The strength of the weld between the cover plate and the square aluminum shell is checked to ensure product performance. Good weld strength can maintain sealing, prevent internal material leakage and external impurities from entering, and ensure that the product functions normally. Attached Figure Description
[0015] Figure 1 This is one of the overall structural schematic diagrams of the present invention; Figure 2 This is a second schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the overall structure of the present invention; Figure 4 This is a schematic diagram of the welding assembly structure of the present invention; Figure 5 This is one of the cross-sectional views of the welding assembly structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of the structure at point A in the middle; Figure 7 This is a second cross-sectional view of the welding assembly structure of the present invention.
[0016] In the diagram: 1. Welding platform; 102. Motor; 103. Turntable; 104. Laser welding arm; 2. Welding assembly; 201. Cylinder; 202. Bearing; 203. Fixture; 204. Fixing sleeve; 205. Fixing rod; 206. Air inlet; 207. Telescopic rod; 208. Suction cup; 209. Gear groove; 210. Gear; 211. Rack; 212. Moving plate; 213. Clamp; 214. Nozzle; 215. Spring; 216. Piston rod; 217. Piston block; 218. Piston tube. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0018] See Figures 1 to 7As shown, this invention provides an integrated laser welding and inspection device for square aluminum-cased batteries, including a welding platform 1 and a turntable 103 rotating on the welding platform 1. A welding assembly 2 is mounted on the welding platform 1. The welding assembly 2 includes a cylinder 201, the output end of which is connected to a fixing frame 203. A fixing sleeve 204 is fixedly installed on one side of the fixing frame 203. A fixing rod 205 is fixedly installed inside the fixing sleeve 204. One end of the fixing rod 205 is connected to an air inlet 206, and nozzles 214 are connected to both sides of the air inlet 206. A telescopic rod 207 is slidably installed inside the fixed rod 205. A suction cup 208 is fixedly installed at one end of the telescopic rod 207. Gears 210 are slidably connected to both sides of the telescopic rod 207. A rack 211 meshes with one side of the gear 210. A movable disk 212 is fixedly connected to one end of the rack 211. Clamps 213 are fixedly installed around the movable disk 212 and on one side of the turntable 103. A piston block 217 is fixedly connected to one side of the movable disk 212. A piston tube 218 is installed on the outer surface of the piston block 217. One end of the piston tube 218 is connected to one side of the suction cup 208. The construction workers placed the square aluminum shell between the four sets of clamps 213 on the turntable 103. Then, the construction workers rotated the fixing screws on the fixing frames of the four sets of clamps 213 respectively. The four sets of fixing screws respectively drove the four sets of clamping plates to fix and hold the square aluminum shell on the four sides, thus clamping and fixing the square aluminum shell. Then, the construction workers start cylinder 201. Cylinder 201 drives the fixed frame 203 downward through bearing 202. The fixed frame 203 drives the moving plate 212 downward through the fixed sleeve 204, so that the moving plate 212 drives the clamp 213 to the welding position between the square aluminum shell and the cover plate. The construction workers rotate the fixing screws on the four sets of clamp 213 fixing frames respectively. The four sets of fixing screws drive the four sets of clamping plates to fix and clamp the square aluminum shell and the cover plate at the connection point, aligning the square aluminum shell and the cover plate. Afterwards, the construction workers started the blower connected to one end of the air inlet 206 and opened the valve on the air inlet 206. The blower transmitted gas to the inside of the fixed rod 205 through the air inlet 206. Then the gas squeezed the telescopic rod 207 to move downward. The telescopic rod 207 drove the suction cup 208 to move downward, so that the suction cup 208 applied pressure to the cover plate and fixed the cover plate to the square aluminum shell. This prevents the welding position deviation from being affected by the welding quality and product precision if the workpiece is not positioned accurately or not clamped firmly during welding. After the telescopic rod 207 drives the suction cup 208 to be fixed to the cover plate, the construction personnel close the valve. The gas is no longer transmitted to the inside of the spring 215 through the air inlet 206. Instead, the gas is concentrated and transmitted to the inside of the nozzles 214 on both sides of the air inlet 206. The fixing sleeve 204 sprays the gas onto the square aluminum shell and the cover plate to dissipate heat from the square aluminum shell and the cover plate. This prevents the welding method of the laser welding machine from generating a lot of heat during the welding process, which could damage the internal structure of the square aluminum shell battery. When the gas compression telescopic rod 207 moves downward, the spring 215 is also stretched as the telescopic rod 207 moves downward. The spring 215 is used to open the valve on the air inlet 206 again after the welding work is completed and the auxiliary blower stops running. The gas inside the fixed rod 205 is transmitted out, and the spring 215 drives the telescopic rod 207 to reset, which is convenient for the next operation of the equipment. As the gas extrusion telescopic rod 207 moves downward, it drives two sets of gears 210 to rotate through the toothed grooves 209 on both sides. The two sets of gears 210 drive two sets of racks 211 to move upward. The two sets of racks 211 drive four sets of clamps 213 to move upward through the moving disk 212, away from the connection between the square aluminum shell and the cover plate, so that the laser welding arm 104 can weld the connection between the square aluminum shell and the cover plate. The construction workers start the motor 102. The motor 102 drives the square aluminum shell and the cover plate to rotate through the turntable 103 and the clamp 213, which facilitates the laser welding arm 104 to perform uniform welding at the connection between the square aluminum shell and the cover plate, thereby improving the welding quality and increasing the welding efficiency. Two sets of racks 211 drive four sets of clamps 213 upward via the moving plate 212. At the same time, the moving plate 212 drives the piston block 217 upward via the piston rod 216. Since the telescopic rod 207 also drives the suction cup 208 downward, the piston block 217 is stretched inside the piston tube 218. The gas inside the suction cup 208 is extracted through the connecting pipe at one end of the piston tube 218, so that the suction cup 208 fixes the cover plate more firmly. After welding is completed, the construction personnel start the cylinder 201. The cylinder 201 retracts. The cylinder 201 drives the fixed plate to stretch through the fixed frame 203, spring 215, telescopic rod 207, and suction cup 208. Check the firmness of the welding quality between the cover plate and the square aluminum shell to ensure product performance. Good welding firmness can maintain the sealing performance, prevent internal material leakage and external impurities from entering, and ensure that the product functions normally.
[0019] In an optional embodiment, a laser welding arm 104 is mounted on the welding platform 1, and a motor 102 is installed inside the welding platform 1. The output end of the motor 102 is connected to one side of the turntable 103.
[0020] It should be noted that when the construction personnel start the motor 102, the motor 102 drives the square aluminum shell and the cover plate to rotate through the turntable 103 and the clamp 213, which facilitates the laser welding arm 104 to perform uniform welding at the connection between the square aluminum shell and the cover plate, thereby improving the welding quality and increasing the welding efficiency.
[0021] In an optional embodiment, each set of clamps 213 is provided with a fixing frame, a fixing screw is slidably mounted on the fixing frame, and a clamping plate is fixedly mounted on one end of the fixing screw.
[0022] It should be noted that the construction workers place the square aluminum shell between the four sets of clamps 213 on the turntable 103. Then, the construction workers rotate the fixing screws on the fixing frames of the four sets of clamps 213 respectively. The four sets of fixing screws drive the four sets of clamping plates to fix and hold the square aluminum shell on the four sides, thus clamping and fixing the square aluminum shell.
[0023] In an optional embodiment, the cylinder 201 is fixedly mounted on the welding platform 1, and a blower is connected to one end of the air inlet 206, which is equipped with a valve.
[0024] It should be noted that initially, when the valve is opened, the blower transmits air to the inside of the fixed rod 205 through the air inlet 206. The gas compresses the telescopic rod 207, which drives the suction cup 208 to press and fix the cover plate, preventing inaccurate workpiece positioning or insecure clamping during welding, which could lead to welding position deviation. After the valve is closed, the gas no longer enters the inside of the spring 215, but is concentrated in the nozzle 214 and sprayed onto the square aluminum shell and the cover plate for heat dissipation, avoiding local thermal deformation caused by laser welding heat that could affect quality. After welding is completed, the valve is opened again, the gas inside the fixed rod 205 is discharged, and the spring 215 drives the telescopic rod 207 to reset for easy operation next time.
[0025] In an optional embodiment, a spring 215 is fixedly connected inside the fixed rod 205, one end of the spring 215 is fixedly connected to one end of the telescopic rod 207, and one end of the telescopic rod 207 passes through the inside of the fixed sleeve 204.
[0026] It should be noted that the spring 215 is stretched when the telescopic rod 207 moves downward with the gas compression. This is used to assist the blower in stopping after welding and to drive the telescopic rod 207 to reset when the air inlet valve 206 is opened again and the gas in the fixed rod 205 is discharged, so as to facilitate the next operation of the equipment. At the same time, it participates in the action process when the cylinder 201 retracts and drives the relevant components to stretch. The whole process helps to ensure the weld strength of the cover plate and the square aluminum shell after welding to maintain product performance.
[0027] In an optional embodiment, the telescopic rod 207 has toothed grooves 209 on both sides, and the two sets of telescopic rods 207 respectively mesh with one side of the gear 210. The fixed sleeve 204 has grooves on both sides, and the gear 210 is rotatably installed in the grooves. The movable disk 212 is slidably connected to the outer surface of the fixed sleeve 204.
[0028] It should be noted that when the gas extrusion telescopic rod 207 moves downward, it drives the two sets of gears 210 to rotate via the toothed grooves 209 on both sides, thereby causing the two sets of racks 211 to move upward. The moving disk 212 moves the four sets of clamps 213 away from the connection between the square aluminum shell and the cover plate, which facilitates the welding of the laser welding arm 104.
[0029] In an optional embodiment, a piston rod 216 is fixedly connected to the movable disk 212, one end of the piston rod 216 passes through one side of the piston tube 218, and one end of the piston rod 216 is fixedly mounted on the piston block 217.
[0030] It should be noted that when the extension rod 207 moves the suction cup 208 downward, the piston block 217 is pulled upward in the piston tube 218 along with the moving disk 212 via the piston rod 216. The gas inside the suction cup 208 is extracted through the connecting pipe at one end of the piston tube 218, so that the suction cup 208 can more firmly fix the cover plate, ensuring the stability of the cover plate position during welding and helping to improve the welding quality.
[0031] In an optional embodiment, one end of the piston tube 218 penetrates one side of the movable disk 212, and a connecting pipe is connected to one side of the piston tube 218, which is connected to one side of the suction cup 208.
[0032] It should be noted that the piston block 217 is stretched inside the piston tube 218, and the gas inside the suction cup 208 is extracted through the connecting pipe at one end of the piston tube 218, so that the suction cup 208 can more firmly fix the cover plate.
[0033] Working principle: The construction personnel place the square aluminum shell between the four sets of clamps 213 on the turntable 103. Then, the construction personnel rotate the fixing screws on the fixing frame of the four sets of clamps 213 respectively. The four sets of fixing screws drive the four sets of clamping plates to fix and hold the square aluminum shell on the four sides, thus clamping and fixing the square aluminum shell. Then, the construction workers start cylinder 201. Cylinder 201 drives fixed frame 203 to move downward through bearing 202. Fixed frame 203 drives moving plate 212 to move downward through fixed sleeve 204. Moving plate 212 drives clamp 213 to the position where square aluminum shell and cover plate are welded. The construction workers rotate the fixing screws on the four sets of clamp 213 fixed frames respectively. The four sets of fixing screws drive the four sets of clamping plates to fix and clamp on the connection between square aluminum shell and cover plate. The square aluminum shell and cover plate are aligned. After alignment, the construction workers start the blower connected to one end of air inlet 206 and open the valve on air inlet 206. The blower transmits gas to the inside of fixed rod 205 through air inlet 206. Then the gas squeezes telescopic rod 207 to move downward. Telescopic rod 207 drives suction cup 208 to move downward, so that suction cup 208 applies pressure to cover plate and fixes cover plate to square aluminum shell. After the telescopic rod 207 drives the suction cup 208 to be fixed to the cover plate, the construction personnel close the valve. The gas is no longer transmitted to the inside of the spring 215 through the air inlet 206. The gas will be concentrated and transmitted to the inside of the nozzles 214 on both sides of the air inlet 206. The fixing sleeve 204 sprays the gas onto the square aluminum shell and the cover plate to dissipate heat from the square aluminum shell and the cover plate. As the gas extrusion telescopic rod 207 moves downward, it drives two sets of gears 210 to rotate through the toothed grooves 209 on both sides. The two sets of gears 210 drive two sets of racks 211 to move upward. The two sets of racks 211 drive four sets of clamps 213 to move upward through the moving disk 212, away from the connection between the square aluminum shell and the cover plate, so that the laser welding arm 104 can weld the connection between the square aluminum shell and the cover plate. The construction workers start the motor 102. The motor 102 drives the square aluminum shell and the cover plate to rotate through the turntable 103 and the clamp 213, so that the laser welding arm 104 can perform uniform welding at the connection between the square aluminum shell and the cover plate. Two sets of racks 211 drive four sets of clamps 213 to move upward via the moving plate 212. At the same time, the moving plate 212 drives the piston block 217 to move upward via the piston rod 216. Since the telescopic rod 207 also drives the suction cup 208 to move downward, the piston block 217 is stretched inside the piston tube 218. The gas inside the suction cup 208 is extracted through the connecting pipe at one end of the piston tube 218, so that the suction cup 208 can fix the cover plate more firmly. After the welding is completed, the construction personnel start the cylinder 201. The cylinder 201 retracts. The cylinder 201 drives the fixed plate to stretch through the fixed frame 203, spring 215, telescopic rod 207, and suction cup 208 to check the firmness of the welding quality between the cover plate and the square aluminum shell.
[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An integrated laser welding and inspection device for square aluminum-cased batteries, comprising a welding platform (1) and a turntable (103) rotating on the welding platform (1), characterized in that, Welding assembly (2) is installed on the welding platform (1). The welding assembly (2) includes a cylinder (201). The output end of the cylinder (201) is connected to a fixing frame (203). A fixing sleeve (204) is fixedly installed on one side of the fixing frame (203). A fixing rod (205) is fixedly installed inside the fixing sleeve (204). One end of the fixing rod (205) is connected to an air inlet (206). Both sides of the air inlet (206) are connected to nozzles (214). A telescopic rod (207) is slidably installed inside the fixing rod (205). A suction cup (208) is fixedly installed at one end of the telescopic rod (207). Gears (210) are slidably connected to both sides of the telescopic rod (207). A rack (211) meshes with one side of the gear (210). A movable disk (212) is fixedly connected to one end of the rack (211). A clamp (213) is fixedly installed around the movable disk (212) and on one side of the turntable (103). A piston block (217) is fixedly connected to one side of the movable disk (212). A piston tube (218) is installed on the outer surface of the piston block (217). One end of the piston tube (218) is connected to one side of the suction cup (208).
2. The integrated laser welding and inspection equipment for square aluminum-cased batteries according to claim 1, characterized in that, A laser welding arm (104) is installed on the welding platform (1), and a motor (102) is installed inside the welding platform (1). The output end of the motor (102) is connected to one side of the turntable (103).
3. The integrated laser welding and testing equipment for square aluminum-cased batteries according to claim 2, characterized in that, Each set of clamps (213) is provided with a fixing frame, and a fixing screw is slidably installed on the fixing frame. A clamping plate is fixedly installed at one end of the fixing screw.
4. The integrated laser welding and inspection equipment for square aluminum-cased batteries according to claim 1, characterized in that, The cylinder (201) is fixedly installed on the welding platform (1), and a blower is connected to one end of the air inlet (206). A valve is provided on the air inlet (206).
5. The integrated laser welding and inspection equipment for square aluminum-cased batteries according to claim 1, characterized in that, A spring (215) is fixedly connected inside the fixed rod (205). One end of the spring (215) is fixedly connected to one end of the telescopic rod (207). One end of the telescopic rod (207) passes through the inside of the fixed sleeve (204).
6. The integrated laser welding and inspection equipment for square aluminum-cased batteries according to claim 1, characterized in that, The telescopic rod (207) has toothed grooves (209) on both sides. The two sets of telescopic rods (207) respectively mesh with one side of the gear (210). The fixed sleeve (204) has grooves on both sides. The gear (210) is rotatably installed inside the grooves. The movable disk (212) is slidably connected to the outer surface of the fixed sleeve (204).
7. The integrated laser welding and testing equipment for square aluminum-cased batteries according to claim 1, characterized in that, A piston rod (216) is fixedly connected to the movable disk (212). One end of the piston rod (216) passes through one side of the piston tube (218), and the other end of the piston rod (216) is fixedly installed on the piston block (217).
8. The integrated laser welding and inspection equipment for square aluminum-cased batteries according to claim 1, characterized in that, One end of the piston tube (218) passes through one side of the moving disk (212), and a connecting pipe is connected to one side of the piston tube (218), which is connected to one side of the suction cup (208).