Battery case cover welding system and its spot inspection method

Abstract

The application relates to the technical field of battery production, and particularly discloses a battery shell cover welding system and a spot inspection method thereof, which comprises a machine body, a top plate is installed on the inner wall of the machine body, a guide hole is formed in the length direction of the top of the top plate, mounting blocks are slidably installed at the two ends of the guide hole, first electric telescopic rods are installed at the bottom of the mounting blocks, mounting sleeves are rotatably installed on the outer walls of the first electric telescopic rods, electric push rods are installed on the outer walls of the mounting sleeves, a U-shaped fixing frame is installed at the end, away from the mounting sleeves, of the electric push rods, a laser welding gun is installed in the fixing frame, and a lifting plate is slidably installed on the outer wall of the telescopic pipe of the first electric telescopic rod. In the application, the first pressing plate and the second pressing plate can uniformly press the welding position when welding the battery shell covers of different models according to the different specifications of the battery covers, can protect the splashed metal liquid during welding, and can clamp and convey the battery shell after welding.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a battery casing welding system and its inspection method. Background Technology

[0002] A battery casing is an outer shell used to encapsulate and protect the internal structure of a battery (such as the battery cells). It is a key component of a single battery cell, directly determining the battery's airtightness, cycle life, and explosion-proof safety performance. As a crucial component of new energy vehicles, it plays a vital role in the stable operation and safety protection of the battery module. A battery cover is installed at one end of the battery opening for connection and power supply to external devices. Therefore, during battery production, welding equipment is required to weld the battery cover to the edge of the battery casing opening.

[0003] Existing welding equipment often results in spattering when welding battery casings and covers. A large amount of molten metal generated during the welding process splashes onto the surface of the battery casing and cover, damaging the surface coating and directly affecting welding quality and production efficiency. Furthermore, existing welding equipment cannot provide adequate protection for the battery cover during welding. Additionally, the pressing method used when pressing the welding position on the battery cover is mostly multi-point pressing, which leads to uneven pressure distribution. It is impossible to press evenly on the welding position according to the different welding positions of the battery casing and cover, and to adjust the pressing position according to the different welding positions. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a battery casing welding system and its inspection method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A battery casing welding system and its inspection method include a body. A top plate is installed on the inner wall of the body. A guide hole is opened on the top of the top plate along its length. Mounting blocks are slidably installed at both ends of the guide hole. A first electric telescopic rod is installed at the bottom of the mounting block. A mounting sleeve is rotatably installed on the outer wall of the first electric telescopic rod. An electric push rod is installed on the outer wall of the mounting sleeve. A U-shaped fixing frame is installed at the end of the electric push rod away from the mounting sleeve. A laser welding gun is installed inside the fixing frame. A lifting plate is slidably installed on the outer wall of the telescopic tube of the first electric telescopic rod. A fixing sleeve is installed at the bottom of the lifting plate. Four second electric telescopic rods are installed on the outer wall of the fixing sleeve. N-shaped second pressure plates and first pressure plates are respectively installed at the ends of the second electric telescopic rods located below the lifting plate at both ends and on both sides away from the fixing sleeve. L-shaped adjusting plates are installed near the corners below the lifting plate. The two ends of the adjusting plates are slidably installed inside the first pressure plate and the second pressure plate, respectively.

[0006] Preferably, a retaining ring is installed on the outer wall of the bottom end of the telescopic tube of the first electric telescopic rod, a spring is installed on the outer wall of the telescopic tube of the first electric telescopic rod between the outer tube and the lifting plate, a positioning device is installed at the bottom end of the first electric telescopic rod, guide grooves are opened on the inner walls of the first pressure plate and the second pressure plate, guide blocks are installed on both sides of the adjusting plate, the guide blocks are slidably installed inside the guide groove, an annular support groove is opened on the outer wall of the first electric telescopic rod, and a third electric slider is installed on the inner wall of the mounting sleeve, the third electric slider is slidably installed inside the support groove.

[0007] Preferably, a fixed base is installed at the middle of the inner bottom of the machine body, and clamping seats are slidably installed at both ends of the fixed base on the inner bottom of the machine body. Clamping holes are opened on the opposite surfaces of the clamping seats and the fixed base. The top of the inner wall of the clamping holes is provided with a protective chamfer. The bottom of the clamping seats and the fixed base are respectively provided with a first support hole and a second support hole in the length direction. The fixed base is provided with a storage cavity. A limit hole is opened at the top of the storage cavity. A discharge hole is opened on the side of the storage cavity. The discharge hole passes through the fixed base and the machine body. A C-shaped placement shell is installed inside the storage cavity. The top of the placement shell is located inside the limit hole.

[0008] Preferably, the top of the placement shell is provided with a feed hole near the discharge hole, the placement shell contains a placement box, the inner wall of the placement box is equipped with several V-shaped partitions, the inner bottom of the placement box is equipped with conductive sponge, the inner bottom of the placement shell is provided with a limiting groove, the inner bottom of the limiting groove is rotatably mounted with a rotating plate, the bottom of the placement shell is equipped with an electric rotating shaft, the top end of the electric rotating shaft passes through the limiting groove and is connected to the bottom of the rotating plate, the top of the rotating plate is provided with a fixing groove, and the inside of the fixing groove is equipped with a gravity detection plate.

[0009] Preferably, a fan-shaped connecting plate is installed on the inner top of the placement shell away from the feed hole. Several shadowless lamps are installed at the bottom middle of the connecting plate, and several water spray heads are installed at the bottom of the connecting plate. Telescopic detection probes are installed at both ends of the bottom of the connecting plate. Hybrid data cameras are installed at an angle near the telescopic detection probes at the bottom of the connecting plate. A water-based fire extinguisher is installed on one inner wall of the storage cavity, and the water-based fire extinguisher is connected to several water spray heads.

[0010] Preferably, an arc-shaped placement groove is formed on the inner wall of the placement shell on the side away from the discharge hole. A push plate is placed inside the placement groove. A third electric telescopic rod is installed on the outer wall of the placement shell. One end of the third electric telescopic rod passes through the placement groove and is connected to the push plate. A discharge plate is installed at the bottom of the storage cavity on the side of the placement shell near the discharge hole. The end of the discharge plate away from the placement shell passes through the discharge hole. A conveyor belt is wound around the top of the discharge plate.

[0011] Preferably, a U-shaped groove is formed on the inner wall of the clamping hole, and a protective airbag is installed inside the groove. A detection patch is installed along the length of the side of the protective airbag away from the inner wall of the groove. A connecting groove is formed on the opposite side of the fixing seat and the two clamping seats. The connecting grooves on the fixing seat and the clamping seats are connected to each other by a telescopic hose. An air pump is installed on the inner wall of the storage cavity. All four protective airbags are connected to the air pump. Hydraulic cylinders are installed at both ends of the side of the two clamping seats near the fixing seat. The end of the hydraulic cylinder away from the clamping seat is installed on the end face of the fixing seat.

[0012] Preferably, the guide hole has a placement hole at the middle of both inner walls, which is located above the fixed base. The inner walls of the four sides of the machine body have sliding grooves, which are located above the top plate. The first electric slider is slidably installed inside the sliding grooves on the inner walls at both ends of the machine body. The two ends of the sliding grooves on the inner walls at both ends of the machine body have a second electric slider slidably installed inside. The top of the mounting block has a second support rod slidably installed. The two ends of the second support rod are respectively installed on the opposite faces of the two second electric sliders on the inner walls at both ends of the machine body. The middle of the mounting block has a first support rod slidably installed. The two ends of the first support rod are respectively installed on the opposite faces of the two first electric sliders. The bottom of the machine body has a mounting groove at both ends. The bottom of the mounting groove has a fourth electric telescopic rod installed. The top of the fourth electric telescopic rod has a conveying plate installed. The two conveying plates are located at both ends of the fixed base.

[0013] Preferably, a conveyor belt is installed at the inner bottom of the machine body, the conveyor belt is located inside the first support hole and the second support hole, a plurality of conveyor frames are installed at the top of the conveyor belt, conveyor holes are opened at both ends of the machine body, and the two ends of the conveyor belt pass through the two conveyor holes respectively, observation holes are opened on both sides of the machine body, a protective groove is opened on the inner wall of the first support hole, and an illumination strip is installed inside the protective groove, a slot is opened on the inner wall of both sides of the first support hole away from the fixed seat, a guide plate is installed on both sides of the inner wall of the first support hole, one end of the guide plate is located inside the slot, and a moving groove is opened along the length direction at both ends of the inner bottom of the machine body near the inner wall, and a moving block is installed at both ends of the bottom of the clamping seat, and the moving block is slidably installed inside the moving groove.

[0014] The inspection method for the battery casing welding system of the present invention includes the following steps: Step 1: Place the battery cover on top of the battery case, and place the batteries to be welded into several conveyor racks in sequence. The battery case is then transported to the space between the fixed base and the clamping base by the conveyor belt. Step 2: The fourth electric telescopic rod pushes the battery case into the clamping hole through the conveying plate, while adjusting the height of the battery cover, and the two protective airbags clamp and fix the battery case. Step 3: The bottom of the first electric telescopic rod moves down, and the first pressure plate, the second pressure plate and the adjusting plate press down and clamp the top of the battery cover near the welding position, while the laser welding gun welds the connection between the battery shell and the battery cover. Step 4: The first and second pressure plates drive the adjustment plate to extend, so that the first pressure plate, the second pressure plate and the adjustment plate clamp and move the top of the battery, and it falls into the placement box through the feed hole; Step 5: As the placement box rotates via the rotating plate, the hybrid data camera detects the welding position of the battery casing cover, and the telescopic detection probe detects the resistance of the battery. After the detection is completed, the third electric telescopic rod pushes the placement box to the top of the conveyor belt via the push plate and removes it from the machine body.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this invention, during the welding of the battery cover, the bottoms of the first pressure plate, the second pressure plate, and the adjusting plate can press down on the top edge of the battery cover near the welding point. During use, the elastic downward pressure of the spring is concentrated entirely on the top edge of the battery cover near the welding point, while the pressure is not concentrated at a single point but evenly distributed across the top edge of the battery cover near the welding point. This ensures that the pressure at the connection between the battery cover and the battery casing is uniform, preventing one area from having a strong pressure resulting in an indentation while other areas develop gaps. During welding, because the first pressure plate, the second pressure plate, and the adjusting plate are constantly pressing down on the top of the battery cover, they can shield and protect the molten metal splashing towards the top of the battery cover when welding occurs, preventing molten metal from splashing onto the top of the battery cover. This provides good protection for the top of the battery cover during use.

[0016] In this invention, when the battery casing cover is welded, the first and second pressure plates move towards the side of the battery, so that the top of the battery casing is located inside the first, second, and adjusting plates. Meanwhile, the second electric telescopic rod pulls the first and second pressure plates to clamp the four sides of the battery casing. Simultaneously, the protective airbag releases its grip on the battery casing. The first electric telescopic rod pulls the battery casing out of the clamping hole and moves it above the feed hole. The first electric telescopic rod then moves the battery casing downwards, inserting the bottom of the battery casing into the feed hole. By disengaging the clamping of the battery casing by the first and second pressure plates, the battery casing enters the placement box for inspection and storage. During use, the first and second pressure plates can press down on the welding position when welding different models of battery casing covers according to their specifications, protect against splashing molten metal during welding, and clamp and transport the welded battery casing.

[0017] In this invention, when the two clamping holes clamp and limit the battery casing, the protective airbags on their inner walls also clamp the sides of the battery casing. The detection patch located on the side of the protective airbag abuts against the surface of the battery casing. When the battery casing bulges during welding at the connection point of the battery casing cover, the detection patch can detect the degree of bulging on the side of the battery casing. This prevents the battery from bulging due to heat caused by the laser welding gun welding the welding position. Furthermore, the protective airbag provides elastic clamping to the battery casing, rather than forcibly clamping the bulging battery casing with a clamp. Instead, the protective airbag clamps the bulging battery casing while the detection patch detects the result and issues an alarm, allowing the staff to handle the situation according to the battery condition.

[0018] In this invention, two adjacent batteries inside the placement box are separated by a V-shaped partition, and the partition has a fan-shaped space inside to prevent the heat generated during battery casing storage and testing from affecting adjacent batteries. This provides good isolation and protection for the batteries during use. The conductive sponge located at the bottom of the placement box absorbs the static electricity generated during battery casing transportation and welding, preventing the static electricity on the surface of the battery casing from affecting its interior. At the same time, when the battery casing is placed into the placement box through the feed hole, it can buffer the bottom of the battery casing entering the placement box, preventing the bottom of the battery casing from colliding with the inner bottom of the placement box and causing damage to the battery casing. Attached Figure Description

[0019] Figure 1 This is a perspective view of the battery casing welding system and its inspection method proposed in this invention. Figure 2 This is a cross-sectional view of the battery casing welding system and its inspection method proposed in this invention. Figure 3 This is a schematic diagram of the top plate structure of the battery casing cover welding system and its inspection method proposed in this invention; Figure 4 This is a schematic diagram of the installation structure of the first electric telescopic rod of the battery casing welding system and its inspection method proposed in this invention. Figure 5 This is a schematic diagram of the spring mounting structure of the battery casing welding system and its inspection method proposed in this invention. Figure 6 This is a partial sectional view of the first electric telescopic rod of the battery casing welding system and its inspection method proposed in this invention. Figure 7 This is a schematic diagram of the material discharge plate installation structure of the battery casing welding system and its inspection method proposed in this invention. Figure 8 This is a schematic diagram of the fixing base structure of the battery casing welding system and its inspection method proposed in this invention; Figure 9This is a cross-sectional view of the mounting base of the battery casing welding system and its inspection method proposed in this invention. Figure 10 This is a cross-sectional view of the battery casing welding system and its inspection method proposed in this invention. Figure 11 This is a schematic diagram of the placement box structure of the battery casing welding system and its inspection method proposed in this invention; Figure 12 This is a schematic diagram of the clamping seat installation structure of the battery casing welding system and its inspection method proposed in this invention. Figure 13 This is a schematic diagram of the guide plate installation structure of the battery casing welding system and its inspection method proposed in this invention. Figure 14 This is a partial sectional view of the battery casing welding system and its inspection method proposed in this invention.

[0020] In the diagram: 1. Machine body; 2. Conveying hole; 3. Discharge hole; 4. Discharge plate; 5. Observation hole; 6. Top plate; 7. Slide groove; 8. First electric slider; 9. First support rod; 10. Second support rod; 11. Mounting block; 12. Guide hole; 13. Placement hole; 14. First electric telescopic rod; 15. Mounting sleeve; 16. Fixed seat; 17. Clamping seat; 18. Mounting groove; 19. Laser welding gun; 20. Second electric slider; 21. Lifting plate; 22. First pressure plate; 23. Second pressure plate; 24. Adjusting plate; 25. Support groove; 26. Third electric slider; 27. Spring; 28. Second electric telescopic rod; 29. ​​Guide groove; 30. Guide block; 31. Retaining ring; 32. Positioner; 33. Protective chamfer; 34. Hydraulic cylinder; 35. Placement shell; 36. Feed hole; 37. Conveyor belt; 38. 39. Support hole; 40. Conveyor belt; 41. Conveyor frame; 42. Protective airbag; 43. Second support hole; 44. Connecting groove; 45. Clamping hole; 46. Groove; 47. Detection patch; 48. Limiting hole; 49. Air pump; 50. Water-based fire extinguisher; 51. Placement box; 52. Placement groove; 53. Third electric telescopic rod; 54. Push plate; 55. Connecting plate; 56. Shadowless lamp; 57. Sprinkler head; 58. Storage chamber; 59. Hybrid data camera; 60. Telescopic detection probe; 61. Electric rotating shaft; 62. Limiting groove; 63. Rotating plate; 64. Fixing groove; 65. Gravity detection plate; 66. Partition plate; 67. Conductive sponge; 68. Protective groove; 69. Lighting strip; 70. Card slot; 71. Guide plate; 72. Moving block; 73. Moving groove; 74. Conveyor plate; 75. Fourth electric telescopic rod. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Reference Figure 1-14 A battery casing welding system and its inspection method include a body 1, a top plate 6 installed on the inner wall of the body 1, a guide hole 12 opened on the top of the top plate 6 along its length, mounting blocks 11 slidably installed at both ends of the guide hole 12, a first electric telescopic rod 14 installed at the bottom of the mounting block 11, a mounting sleeve 15 rotatably installed on the outer wall of the first electric telescopic rod 14, an electric push rod installed on the outer wall of the mounting sleeve 15, a U-shaped fixing frame installed at the end of the electric push rod away from the mounting sleeve 15, and a laser welding gun 1 installed inside the fixing frame. 9. A lifting plate 21 is slidably installed on the outer wall of the telescopic tube of the first electric telescopic rod 14. A fixing sleeve is installed at the bottom of the lifting plate 21. Four second electric telescopic rods 28 are installed on the outer wall of the fixing sleeve. At the ends of the second electric telescopic rods 28 located below the lifting plate 21 and on both sides, an N-shaped second pressure plate 23 and a first pressure plate 22 are respectively installed. An L-shaped adjusting plate 24 is installed at the lower part of the lifting plate 21 near the corner. The two ends of the adjusting plate 24 are slidably installed inside the first pressure plate 22 and the second pressure plate 23 respectively.

[0024] As a technical optimization of the present invention, a retaining ring 31 is installed on the outer wall of the bottom end of the telescopic tube of the first electric telescopic rod 14. A spring 27 is installed on the outer wall of the telescopic tube of the first electric telescopic rod 14 between the outer tube of the first electric telescopic rod 14 and the lifting plate 21. A positioning device 32 is installed at the bottom end of the first electric telescopic rod 14. Guide grooves 29 are opened on the inner walls of the first pressure plate 22 and the second pressure plate 23. Guide blocks 30 are installed on both sides of the adjusting plate 24. The guide blocks 30 are slidably installed inside the guide grooves 29. An annular support groove 25 is opened on the outer wall of the first electric telescopic rod 14. A third electric slider 26 is installed on the inner wall of the mounting sleeve 15. The third electric slider 26 is slidably installed inside the support groove 25. When in use, the positioning device 32 can correspond to the battery cover when the first electric telescopic rod 14 moves down, so that the first electric telescopic rod 14 can be adjusted in real time according to the position of the battery cover.

[0025] As a technical optimization of the present invention, a fixed base 16 is installed at the middle of the inner bottom of the body 1. Clamping seats 17 are slidably installed at both ends of the fixed base 16 on the inner bottom of the body 1. Clamping holes 44 are provided on the opposite surfaces of the clamping seats 17 and the fixed base 16. A protective chamfer 33 is provided at the top of the inner wall of the clamping holes 44. A first support hole 38 and a second support hole 42 are respectively provided at the bottom of the clamping seats 17 and the fixed base 16 along their length. A storage cavity 57 is provided inside the fixed base 16. A limited opening is provided at the top of the inner surface of the storage cavity 57. The storage cavity 57 has a discharge hole 3 on its side, which passes through the fixed base 16 and the machine body 1. A C-shaped placement shell 35 is installed inside the storage cavity 57, and the top of the placement shell 35 is located inside the limiting hole 47. The clamping hole 44 can provide a good clamping effect on the battery case during use. At the same time, the operator can adjust the position of the clamping base 17 in advance according to the specifications of the entire batch of battery cases. The protective chamfer 33 facilitates the clamping and moving of the top of the battery case by the first pressure plate 22, the second pressure plate 23 and the adjusting plate 24.

[0026] As a technical optimization of the present invention, a feed hole 36 is provided at the top of the placement shell 35 near the discharge hole 3. A placement box 50 is placed inside the placement shell 35. Several V-shaped partitions 65 are installed on the inner wall of the placement box 50. A conductive sponge 66 is installed at the bottom of the placement box 50. A limiting groove 61 is provided at the bottom of the placement shell 35. A rotating plate 62 is rotatably installed at the bottom of the limiting groove 61. An electric rotating shaft 60 is installed at the bottom of the placement shell 35. The top end of the electric rotating shaft 60 passes through the limiting groove 61 and is connected to the bottom of the rotating plate 62. A fixing groove 63 is provided at the top of the rotating plate 62. A gravity detection plate 64 is installed inside the fixing groove 63. When in use, the conductive sponge 66 can absorb the static electricity on the surface of the battery shell, preventing the static electricity on the surface of the battery from affecting the inside of the battery during transportation and welding.

[0027] As a technical optimization of the present invention, a fan-shaped connecting plate 54 is installed on the inner top of the placement shell 35 away from the feed hole 36. Several shadowless lamps 55 are installed at the bottom middle of the connecting plate 54, and several water spray heads 56 are installed at the bottom of the connecting plate 54. Telescopic detection probes 59 are installed at both ends of the bottom of the connecting plate 54. Hybrid data cameras 58 are installed at an angle near the telescopic detection probes 59 at the bottom of the connecting plate 54. A water-based fire extinguisher 49 is installed on one inner wall of the storage cavity 57, and the water-based fire extinguisher 49 is connected to several water spray heads 56. When the placement box 50 is rotated, the welded batteries can easily enter the designated position inside the placement box 50 through the feed hole 36, and at the same time, it is convenient to perform mobile testing on the placed batteries.

[0028] As a technical optimization of the present invention, an arc-shaped placement groove 51 is provided on the inner wall of the placement shell 35 away from the discharge hole 3. A push plate 53 is placed inside the placement groove 51. A third electric telescopic rod 52 is installed on the outer wall of the placement shell 35. One end of the third electric telescopic rod 52 passes through the interior of the placement groove 51 and is connected to the push plate 53. A discharge plate 4 is installed at the bottom of the storage cavity 57 on the side of the placement shell 35 near the discharge hole 3. The end of the discharge plate 4 away from the placement shell 35 passes through the discharge hole 3. A conveyor belt 37 is wound around the top of the discharge plate 4. During use, the operator can place and pick up the placement box 50 through the conveyor belt 37.

[0029] As a technical optimization of the present invention, a U-shaped groove 45 is provided on the inner wall of the clamping hole 44. A protective airbag 41 is installed inside the groove 45. A detection patch 46 is installed along the length of the side of the protective airbag 41 away from the inner wall of the groove 45. A connecting groove 43 is provided on the opposite surfaces of the fixing seat 16 and the two clamping seats 17. The connecting grooves 43 on the fixing seat 16 and the clamping seats 17 are connected to each other by a telescopic hose. An air pump 48 is installed on the inner wall of the storage cavity 57. All four protective airbags 41 are connected to the air pump 48. Hydraulic cylinders 34 are installed at both ends of the side of the two clamping seats 17 near the fixing seat 16. The end of the hydraulic cylinder 34 away from the clamping seat 17 is installed on the end face of the fixing seat 16. When the operator clamps and welds batteries of different specifications, the operator can adjust the distance between the fixing seat 16 and the clamping seat 17 through the hydraulic cylinder 34, and can also adjust the clamping force.

[0030] As a technical optimization of the present invention, placement holes 13 are provided at the middle of the inner walls on both sides of the guide hole 12. The placement holes 13 are located above the fixed base 16. Sliding grooves 7 are provided on the inner walls of all four sides of the body 1. The sliding grooves 7 are located above the top plate 6. First electric sliders 8 are slidably installed inside the sliding grooves 7 on the inner walls at both ends of the body 1. Second electric sliders 20 are slidably installed at both ends of the sliding grooves 7 on the inner walls on both sides of the body 1. A second support rod 10 is slidably installed at the top of the mounting block 11. The two ends of the second support rod 10 are respectively installed on the opposite faces of the two second electric sliders 20 on the inner walls on both sides of the body 1. A first support rod 9 is slidably installed at the middle of the mounting block 11. The two ends of the first support rod 9 are respectively installed on the opposite faces of the two first electric sliders 8. The inner bottom of the body 1 is provided with mounting grooves 18 at both ends. A fourth electric telescopic rod 74 is installed at the inner bottom of the mounting groove 18. A conveying plate 73 is installed at the top of the fourth electric telescopic rod 74. The two conveying plates 73 are located at both ends of the fixed base 16. During use, the operator can use a single large mounting block 11 to weld the battery case cover held by the two clamping seats 17 at the same time and clamp and place the welded battery. Alternatively, two smaller mounting blocks 11 can be installed so that the two mounting blocks 11 can weld and clamp and move the battery case cover held by the two clamping seats 17 respectively. The two smaller mounting blocks 11 are easy to move and adjust in position inside the placement hole 13, and will not cause mutual interference when clamping and placing the welded battery.

[0031] As a technical optimization of the present invention, a conveyor belt 39 is installed at the bottom of the inner part of the machine body 1. The conveyor belt 39 is located inside the first support hole 38 and the second support hole 42. Several conveyor frames 40 are installed on the top of the conveyor belt 39. Conveying holes 2 are opened at both ends of the machine body 1. The two ends of the conveyor belt 39 pass through the two conveying holes 2 respectively. Observation holes 5 are opened on both sides of the machine body 1. A protective groove 67 is opened on the inner wall of the first support hole 38. An illumination strip 68 is installed inside the protective groove 67. A slot 69 is opened on the inner wall of both sides of the first support hole 38 at the end away from the fixed seat 16. The inner part of the first support hole 38... Both sides of the part are equipped with guide plates 70, one end of the guide plate 70 is located inside the slot 69. The bottom of the body 1 is provided with moving slots 72 along the length direction at both ends near the inner wall. The bottom ends of the clamping seat 17 are equipped with moving blocks 71, which are slidably installed inside the moving slots 72. The conveyor belt 39 includes two conveyor belts, and the two ends of several conveyor frames 40 are respectively fixed to the top of the two conveyor belts by bolts. When placing the battery case, the bottom ends of the battery case are respectively located at the top of the two conveyor belts, so that the conveyor plate 73 can push the battery case upward through the bottom of the conveyor frame 40.

[0032] The inspection method for the battery casing welding system of the present invention includes the following steps: Step 1: Place the battery cover on top of the battery case, and place the batteries to be welded into several conveyor racks 40 in sequence. The battery case is then transported to the space between the fixed seat 16 and the clamping seat 17 via the conveyor belt 39. Step 2: The fourth electric telescopic rod 74 pushes the battery case into the clamping hole 44 through the conveying plate 73, while adjusting the height of the battery cover, and the two protective airbags 41 clamp and fix the battery case. Step 3: The bottom of the first electric telescopic rod 14 moves down, the first pressure plate 22, the second pressure plate 23 and the adjusting plate 24 press down and clamp the top of the battery cover near the welding position, while the laser welding gun 19 welds the connection position between the battery shell and the battery cover. Step 4: The first pressure plate 22 and the second pressure plate 23 drive the adjustment plate 24 to extend, so that the first pressure plate 22, the second pressure plate 23 and the adjustment plate 24 clamp and move the top of the battery, and drop it into the placement box 50 through the feed hole 36. Step 5: When the placement box 50 rotates via the rotating plate 62, the hybrid data camera 58 detects the welding position of the battery case cover, and the telescopic detection probe 59 detects the resistance of the battery. After the detection is completed, the third electric telescopic rod 52 pushes the placement box 50 to the top of the conveyor belt 37 via the push plate 53 and moves it out of the machine body 1.

[0033] In use, the operator adjusts the distance between the clamping seat 17 and the fixing seat 16 using the hydraulic cylinder 34 according to the specifications of the battery casing to be welded. This ensures that the clamping holes 44 on the opposite sides of the clamping seat 17 and the fixing seat 16 correspond to the specifications of the battery. Simultaneously, the installation method and position of the laser welding gun 19 are adjusted according to the welding position of the battery casing cover. The operator first places the battery cover at the top of the battery casing and then places the battery casings sequentially inside several conveyor frames 40 on the top of the conveyor belt 39. During use, the bottom ends of the battery casings abut against the top sides of the conveyor belt 39. The conveyor belt 39 transports several battery casings into the machine body 1. The guide plates 70 located on the inner walls on both sides of the clamping seat 17 define the position of the battery casings inside the conveyor frames 40, ensuring that the top of the battery casing is precisely positioned in the designated location during clamping, facilitating welding at the battery casing cover connection point.

[0034] When the battery case moves to below the clamping hole 44 between the fixed seat 16 and the clamping seat 17, the fourth electric telescopic rod 74 pushes the conveyor plate 73 at its top. When the conveyor plate 73 rises, it pushes the battery case inside the conveyor frame 40 to move into the clamping hole 44 between the fixed seat 16 and the clamping seat 17. During use, the operator can adjust the height of the conveyor plate 73 pushing the battery case according to the different heights of different battery specifications, so that the top of the battery case is always at the specified height, which is convenient for welding the battery case cover connection position. Once the battery case is moved to the designated position and height, the air pump 48 located inside the storage cavity 57 delivers gas to the two protective airbags 41. The protective airbags 41 located on the clamping seat 17 are connected to the air pump pipe 48 through the connecting groove 43 and the elastic hose. The protective airbags 41 located on the inner walls of the two clamping holes 44 can clamp the two sides of the battery case. At the same time, the detection patch 46 located on the side of the protective airbag 41 abuts against the surface of the battery case. When the battery case cover connection position is welded and the battery case itself bulges, the detection patch 46 can detect the degree of bulging on the side of the battery case, preventing the battery from bulging due to heat caused by the laser welding gun 19 welding the welding position.

[0035] After the protective airbag 41 clamps and fixes the battery case, the first electric telescopic rod 14 moves its bottom end downward, and at the same time the spring 27 pushes the lifting plate 21 and the fixing sleeve to move through its own elasticity, so that the bottom end of the fixing sleeve always abuts against the top of the retaining ring 31. When the bottom end of the first electric telescopic rod 14 moves down, the positioning device 32 located at the bottom end of the first electric telescopic rod 14 positions the top of the battery cover, and adjusts the position of the first electric telescopic rod 14 in real time according to the position of the battery cover through the first electric slider 8 and the second electric slider 20, until the bottoms of the two first pressure plates 22, the two second pressure plates 23 and the four adjusting plates 24 are all in contact with the top of the battery cover. When in use, the positioning device 32 can also position the edge position of the battery cover when scanning and positioning the top of the battery cover. The first pressure plates 22 and the second pressure plates 23 can be adjusted in position according to the scanned edge position of the battery cover through the second electric telescopic rod 28. At the same time, when the first pressure plates 22 and the second pressure plates 23 are adjusted by moving their positions, the two ends of the four L-shaped adjusting plates 24 will slide inside the first pressure plates 22 and the second pressure plates 23 respectively. When in use, the pressing position can be adjusted in real time according to the battery specifications and the edge welding position of the battery cover. During use, as the bottom of the first electric telescopic rod 14 moves downward, the bottoms of the first pressure plate 22, the second pressure plate 23, and the adjusting plate 24 can press down on the top edge of the battery cover near the welding position. During use, the elastic downward pressure of the spring 27 itself can be concentrated on the top edge of the battery cover near the welding position. At the same time, the downward pressure is not concentrated at one point, but is evenly distributed on the top edge of the battery cover near the edge to be welded, so that the squeezing force at the connection position between the battery cover and the battery shell is the same, and there will be no situation where one place has a strong squeezing force and an indentation, while other places have a warped gap.

[0036] During use, the electric push rod moves the laser welding gun 19, positioning its bottom end above the welding position on the battery cover. Simultaneously, as the laser welding gun 19 moves, the third electric slider 26 rotates the mounting sleeve 15, the electric push rod, and the laser welding gun 19. The electric push rod also extends and retracts the laser welding gun 19 according to its position during rotation, ensuring its bottom end always moves along the connection position of the battery cover for welding. The U-shaped mounting bracket has multiple screw holes and is connected to the laser welding gun 19 with bolts. Operators can tilt and fix the laser welding gun 19 according to usage, facilitating different welding scenarios when changing battery cover sizes. During welding, the first pressure plate 22, the second pressure plate 23, and the adjusting plate 24 always press down on the top of the battery cover. Therefore, when welding spatter occurs, the first pressure plate 22, the second pressure plate 23, and the adjusting plate 24 can shield and protect the molten metal that splashes towards the top of the battery cover, preventing the molten metal from splashing onto the top of the battery cover. This provides good protection for the top of the battery cover during use. When the laser welding gun 19 welds the top edge of the battery casing, the molten metal that splashes towards the side of the battery casing will splash onto the inner wall of the protective chamfer 33. Since the inner wall of the protective chamfer 33 does not come into contact with the surface of the battery casing, the scratches left by the subsequent cleaning of the solidified molten metal will not affect the battery casing.

[0037] In use, the operator can use a single, larger mounting block 11 to simultaneously weld the battery casings held by the two clamping seats 17 and clamp and place the welded batteries. Alternatively, two smaller mounting blocks 11 can be installed so that the two mounting blocks 11 can be used to weld and clamp and move the battery casings held by the two clamping seats 17 respectively. The two smaller mounting blocks 11 are easy to move and adjust in position within the placement hole 13, and will not interfere with each other when clamping and placing the welded batteries. After the battery casing cover is welded, the first electric telescopic rod 14 moves its bottom end slightly upward, and then extends the first pressure plate 22 and the second pressure plate 23 via the second electric telescopic rod 28 before moving downward again, so that the top of the battery casing is located inside the first pressure plate 22, the second pressure plate 23 and the adjusting plate 24, and the bottom ends of the first pressure plate 22 and the second pressure plate 23 are inside the protective chamfer 33. The second electric telescopic rod 28 pulls the first pressure plate 22 and the second pressure plate 23 towards the battery casing until the first pressure plate 22 and the second pressure plate 23 clamp the four sides of the battery casing. At the same time, the protective airbag 41 releases its clamping of the battery casing, and the operator can then pull the battery casing out of the clamping hole 44 through the first electric telescopic rod 14 and through the second electric telescopic rod 28. The two electric sliders 20 and the first electric slider 8 move the mounting block 11 into the placement hole 13, while the first electric telescopic rod 14 and the battery move above the feed hole 36. The first electric telescopic rod 14 moves the battery case down, so that the bottom end of the battery case is inserted into the feed hole 36. The second electric telescopic rod 28 releases the clamp on the battery case through the first pressure plate 22 and the second pressure plate 23, and the battery case can fall into the placement box 50 between two adjacent V-shaped partitions 65. In use, the two adjacent batteries are separated by the V-shaped partitions 65, and the partitions 65 have a fan-shaped space inside to prevent the heat generated by the battery case during storage and testing from affecting the adjacent batteries. This provides better protection for the batteries during use. A conductive sponge 66 is placed at the bottom of the placement box 50. The conductive sponge 66 can absorb the static electricity generated during the transportation and welding of the battery case, preventing the static electricity on the surface of the battery case from affecting its interior. At the same time, when the first electric telescopic rod 14 puts the battery case into the placement box 50 through the feed hole 36, it can buffer the bottom of the battery case entering the placement box 50, preventing the bottom of the battery case from colliding with the bottom of the placement box 50 and causing damage to the battery case.

[0038] During use, the electric rotating shaft 60 can drive the placement box 50 to rotate through the limiting groove 61, adjusting the position of the battery casing and separator 65 inside the placement box 50. This facilitates the subsequent entry of the welded battery casing into the placement box 50 through the feed hole 36, and simultaneously moves the battery casing under the connecting plate 54. When the placement box 50 rotates to the bottom of the connecting plate 54, several shadowless lamps 55 located at the bottom of the connecting plate 54 illuminate the welding position of the battery casing cover. Simultaneously, as the placement box 50 rotates, two tilted hybrid data cameras 58 can inspect the weld seams on both sides and ends of the battery casing cover. If the welding position of the battery casing cover is too long and the hybrid data cameras 58 cannot completely inspect the weld seam, the operator can install hybrid data cameras 58 at both ends or other positions of the connecting plate 54 until the weld seam of the battery casing cover can be completely inspected.

[0039] During use, the telescopic detection probe 59 can contact the two poles at the top of the moving battery cover below to detect the battery's resistance. If the battery overheats, bulges, or shows signs of open flame during testing by the hybrid data camera 58 and the telescopic detection probe 59, the water-based fire extinguisher 49, connected to several water nozzles 56, extinguishes and flames the battery under testing. Simultaneously, the third electric telescopic rod 52 pushes the placement box 50 to the top of the conveyor belt 37 via the push plate 53, allowing the placement box 50 and its internal batteries to be moved to the outside via the conveyor belt 37. After the batteries in the placement box 50 have been placed and tested, the placement box 50 and batteries are moved to the end via the third electric telescopic rod 52 and the push plate 53. After the staff has removed the placement box 50, the remaining placement boxes 50 can be pushed into the storage cavity 57.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A battery casing welding system, comprising a body (1), characterized in that, A top plate (6) is installed on the inner wall of the body (1). A guide hole (12) is opened on the top of the top plate (6) along the length direction. Mounting blocks (11) are slidably installed at both ends of the guide hole (12). A first electric telescopic rod (14) is installed at the bottom of the mounting block (11). A mounting sleeve (15) is rotatably installed on the outer wall of the first electric telescopic rod (14). An electric push rod is installed on the outer wall of the mounting sleeve (15). A U-shaped fixing frame is installed at the end of the electric push rod away from the mounting sleeve (15). A laser welding gun (19) is installed inside the fixing frame. The first electric telescopic rod ( A lifting plate (21) is slidably installed on the outer wall of the telescopic tube of 14). A fixed sleeve is installed at the bottom of the lifting plate (21). Four second electric telescopic rods (28) are installed on the outer wall of the fixed sleeve. The ends of the second electric telescopic rods (28) located at both ends and sides below the lifting plate (21) are respectively equipped with N-shaped second pressure plates (23) and first pressure plates (22). L-shaped adjustment plates (24) are installed at the lower part of the lifting plate (21) near the corners. The two ends of the adjustment plates (24) are slidably installed inside the first pressure plate (22) and the second pressure plate (23).

2. The battery casing welding system according to claim 1, characterized in that, A retaining ring (31) is installed on the outer wall of the bottom end of the telescopic tube of the first electric telescopic rod (14). A spring (27) is installed on the outer wall of the telescopic tube of the first electric telescopic rod (14) between the outer tube of the first electric telescopic rod (14) and the lifting plate (21). A positioning device (32) is installed at the bottom end of the first electric telescopic rod (14). Guide grooves (29) are opened on the inner walls of the first pressure plate (22) and the second pressure plate (23). Guide blocks (30) are installed on both sides of the adjusting plate (24). The guide blocks (30) are slidably installed inside the guide grooves (29). An annular support groove (25) is opened on the outer wall of the first electric telescopic rod (14). A third electric slider (26) is installed on the inner wall of the mounting sleeve (15). The third electric slider (26) is slidably installed inside the support groove (25).

3. The battery casing welding system according to claim 1, characterized in that, A fixed seat (16) is installed at the middle of the inner bottom of the machine body (1). A clamping seat (17) is slidably installed at both ends of the fixed seat (16) at the inner bottom of the machine body (1). A clamping hole (44) is opened on the opposite side of the clamping seat (17) and the fixed seat (16). A protective chamfer (33) is provided at the top of the inner wall of the clamping hole (44). A first support hole (38) and a second support hole (42) are opened at the bottom of the clamping seat (17) and the fixed seat (16) respectively in the length direction. A storage cavity (57) is provided inside the fixed seat (16). A limit hole (47) is opened at the top of the storage cavity (57). A discharge hole (3) is opened on the side of the storage cavity (57). The discharge hole (3) passes through the fixed seat (16) and the machine body (1). A C-shaped placement shell (35) is installed inside the storage cavity (57). The top of the placement shell (35) is located inside the limit hole (47).

4. The battery casing welding system according to claim 3, characterized in that, The top of the placement shell (35) is provided with a feed hole (36) near the discharge hole (3). The placement shell (35) contains a placement box (50). Several V-shaped partitions (65) are installed on the inner wall of the placement box (50). A conductive sponge (66) is installed at the bottom of the placement box (50). A limiting groove (61) is provided at the bottom of the placement shell (35). A rotating plate (62) is rotatably installed at the bottom of the limiting groove (61). An electric rotating shaft (60) is installed at the bottom of the placement shell (35). The top of the electric rotating shaft (60) extends into the limiting groove (61) and is connected to the bottom of the rotating plate (62). A fixing groove (63) is provided at the top of the rotating plate (62). A gravity detection plate (64) is installed inside the fixing groove (63).

5. The battery casing welding system according to claim 4, characterized in that, A fan-shaped connecting plate (54) is installed on the inner top of the placement shell (35) away from the feed hole (36). Several shadowless lamps (55) are installed at the bottom middle of the connecting plate (54). Several water spray heads (56) are installed at the bottom of the connecting plate (54). Telescopic detection probes (59) are installed at both ends of the bottom of the connecting plate (54). Hybrid data cameras (58) are installed at an angle near the telescopic detection probes (59) at the bottom of the connecting plate (54). A water-based fire extinguisher (49) is installed on one side of the inner wall of the storage cavity (57). The water-based fire extinguisher (49) is connected to several water spray heads (56).

6. The battery casing welding system according to claim 5, characterized in that, An arc-shaped placement groove (51) is provided on the inner wall of the placement shell (35) away from the discharge hole (3). A push plate (53) is placed inside the placement groove (51). A third electric telescopic rod (52) is installed on the outer wall of the placement shell (35). One end of the third electric telescopic rod (52) passes through the interior of the placement groove (51) and is connected to the push plate (53). A discharge plate (4) is installed at the bottom of the storage cavity (57) on the side of the placement shell (35) near the discharge hole (3). One end of the discharge plate (4) away from the placement shell (35) passes through the discharge hole (3). A conveyor belt (37) is wound around the top of the discharge plate (4).

7. The battery casing welding system according to claim 3, characterized in that, The inner wall of the clamping hole (44) is provided with a U-shaped groove (45). A protective airbag (41) is installed inside the groove (45). A detection patch (46) is installed on the side of the protective airbag (41) away from the inner wall of the groove (45) along the length direction. A connecting groove (43) is provided on the opposite side of the fixed seat (16) and the two clamping seats (17). The connecting grooves (43) on the fixed seat (16) and the clamping seats (17) are connected to each other through a telescopic hose. An air pump (48) is installed on the inner wall of the storage cavity (57). The four protective airbags (41) are all connected to the air pump (48). A hydraulic cylinder (34) is installed at both ends on the side of the two clamping seats (17) close to the fixed seat (16). The end of the hydraulic cylinder (34) away from the clamping seat (17) is installed on the end face of the fixed seat (16).

8. The battery casing welding system according to claim 3, characterized in that, The guide hole (12) has a placement hole (13) at the middle of the inner wall on both sides. The placement hole (13) is located above the fixed base (16). The inner walls of the four sides of the body (1) are provided with sliding grooves (7). The sliding grooves (7) are located above the top plate (6). The first electric slider (8) is slidably installed inside the sliding grooves (7) on the inner walls at both ends of the body (1). The second electric slider (20) is slidably installed at both ends of the sliding grooves (7) on the inner walls on both sides of the body (1). The top of the mounting block (11) is slidably installed with a second support rod (10). The two ends of the 0) are respectively installed on the opposite sides of the two second electric sliders (20) on the inner walls of the two sides of the machine body (1). The first support rod (9) is slidably installed in the middle of the mounting block (11). The two ends of the first support rod (9) are respectively installed on the opposite sides of the two first electric sliders (8). The two ends of the inner bottom of the machine body (1) are provided with mounting grooves (18). The inner bottom of the mounting groove (18) is provided with a fourth electric telescopic rod (74). The top of the fourth electric telescopic rod (74) is provided with a conveying plate (73). The two conveying plates (73) are located at the two ends of the fixed seat (16).

9. The battery casing welding system according to claim 3, characterized in that, A conveyor belt (39) is installed at the bottom of the inner part of the machine body (1). The conveyor belt (39) is located inside the first support hole (38) and the second support hole (42). Several conveyor frames (40) are installed on the top of the conveyor belt (39). Conveying holes (2) are opened at both ends of the machine body (1). The two ends of the conveyor belt (39) pass through the two conveying holes (2) respectively. Observation holes (5) are opened on both sides of the machine body (1). A protective groove (67) is opened on the inner wall of the first support hole (38). A camera is installed inside the protective groove (67). The light strip (68) has a slot (69) on the inner wall of both sides of the first support hole (38) away from the fixed seat (16). The guide plate (70) is installed on both sides of the inner wall of the first support hole (38). One end of the guide plate (70) is located inside the slot (69). The two ends of the inner bottom of the body (1) are provided with a moving groove (72) along the length direction. The two ends of the bottom of the clamping seat (17) are provided with a moving block (71). The moving block (71) is slidably installed inside the moving groove (72).

10. The inspection method for the battery casing welding system as described in any one of claims 1-9, characterized in that, This inspection method includes the following steps: Step 1: Place the battery cover on top of the battery case and place the batteries to be welded into several conveyor racks (40) in sequence. The battery case is then transported to the fixed seat (16) and the clamping seat (17) by the conveyor belt (39). Step 2: The fourth electric telescopic rod (74) pushes the battery case into the clamping hole (44) through the conveying plate (73), while adjusting the height of the battery cover, and the two protective airbags (41) clamp and fix the battery case. Step 3: The bottom of the first electric telescopic rod (14) moves down, and the first pressure plate (22), the second pressure plate (23) and the adjusting plate (24) press down and clamp the top of the battery cover near the welding position, while the laser welding gun (19) welds the connection position between the battery shell and the battery cover. Step 4: The first pressure plate (22) and the second pressure plate (23) drive the adjustment plate (24) to extend, so that the first pressure plate (22), the second pressure plate (23) and the adjustment plate (24) clamp and move the top of the battery, and drop it into the placement box (50) through the feed hole (36); Step 5: When the placement box (50) rotates via the rotating plate (62), the hybrid data camera (58) detects the welding position of the battery case cover, and the telescopic detection probe (59) detects the resistance of the battery. After the detection is completed, the third electric telescopic rod (52) pushes the placement box (50) to the top of the conveyor belt (37) via the push plate (53) and moves it out of the machine body (1).

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