Battery shell sealing performance detection device and detection method

Abstract

The invention relates to the technical field of detection, and discloses a battery shell sealing performance detection device and detection method.The battery shell sealing performance detection device comprises a support, two electric pistons are fixedly connected to the inner wall of the top of the support, and two clamping plates are driven to get close to each other through two ropes when a workbench moves downwards; two first rotating shafts are rotationally connected to the inner wall of the front side of a support, meanwhile, a second small spring is stretched, the second small spring generates inward pulling force, when a battery shell is clamped, a clamping head moves towards the interior of a hollow block under the action of clamping force, meanwhile, the first small spring is extruded, the first small spring generates elastic force, and the buffering effect is achieved; when the working table moves upwards, the second small spring generates pulling force to drive the two clamping plates to be away from each other and release clamping of the battery shell, under the action of the elastic force of the first small spring, the clamping head is reset, position deviation of the battery shell under the action of buoyancy of water is prevented, and the detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a battery casing sealing detection device and a detection method. Background Art

[0002] In today's era, batteries are widely used in many fields such as consumer electronics and electric vehicles. The sealing of battery shells is crucial to battery performance and safety. On the one hand, the industry has higher requirements for product quality and safety. For example, if the battery shell of an electric vehicle is not well sealed, electrolyte leakage will cause short circuits, fires and explosions, and other serious consequences. Moisture in consumer electronics will also affect the performance of the battery. On the other hand, existing detection methods have limitations. Traditional appearance inspection methods rely on manual visual inspection, which is inefficient, easy to miss minor defects, and greatly interfered by subjective factors of inspectors; simple pressure test methods are difficult to accurately measure minor leakage and cannot locate the leakage position.

[0003] Among them, when the battery shell sealing detection device is in use, the battery shell is often immersed in water for detection. During this process, the buoyancy of the water will provide an upward buoyancy for the battery shell, resulting in deviations in the detection results. In view of the above problems, the following solutions are proposed. Summary of the invention

[0004] The cam is provided with a toothed plate, and the toothed plate ... The clamping mechanism includes a hollow groove opened on the workbench, a clamping plate is slidably connected to the inner wall of the hollow groove, a hollow block is fixedly connected to the clamping plate, a clamping head is slidably connected to the inner wall of the hollow block, a small spring 1 is fixedly connected to the right inner wall of the hollow block, the left side of the small spring 1 is fixedly connected to the clamping head, two small springs 2 are fixedly connected to the right side of the clamping plate, the right sides of the two small springs 2 are fixedly connected to the right inner wall of the hollow groove, two wire wheels are rotatably connected to the inner wall of the hollow groove, a rope is fixedly connected to the top inner wall of the bracket, the side of the rope away from the top inner wall of the bracket is fixedly connected to the clamping plate, the rope is slidably connected to the recesses of the two wire wheels, and a water inlet is fixedly connected to the bottom of the hollow groove When the workbench moves downward, the two clamping plates are driven to approach each other through two ropes, and at the same time, the small spring 2 is stretched, so that the small spring 2 generates an inward pulling force. When the battery shell is clamped, the clamping head moves toward the inside of the hollow block under the action of the clamping force, and at the same time, the small spring 1 is squeezed to generate an elastic force for the small spring 1 to play a buffering role and prevent wear on the outside of the battery shell. When the workbench moves upward, the two clamping plates are driven away from each other under the action of the pulling force of the small spring 2, thereby releasing the clamping of the battery shell, and the clamping head is reset under the action of the elastic force of the small spring 1 to prevent the battery shell from shifting in position under the action of the buoyancy of the water, thereby improving the detection efficiency.

[0005] Preferably, the water inlet assembly includes a trapezoidal slide opened at the bottom of the hollow groove, the inner wall of the trapezoidal slide is slidably connected with a trapezoidal plate, the top of the trapezoidal plate is fixedly connected to the clamping plate, a water inlet is opened at the bottom of the trapezoidal slide, and a cleaning assembly is fixedly connected to the top of the water tank. When the two clamping plates approach each other, the two trapezoidal plates are driven to move into the trapezoidal slide, and the water inlet at the bottom is opened at the same time, so that the water in the water tank flows out from the bottom of the workbench; when the workbench moves upward, the two clamping plates will move away from each other, driving the two trapezoidal plates to move to block the water inlet, and the water that has not flowed out will flow into the water tank through the water inlet, preventing the water in the water tank from overflowing through the edge of the workbench, keeping the working area clean, and improving the service life of the detection equipment.

[0006] Preferably, the cleaning assembly comprises a rectangular frame fixedly connected to the top of the water tank, four frames of the rectangular frame are fixedly connected with small hydraulic rods, and the cleaning blocks are fixedly connected to the small hydraulic rods.

[0007] Preferably, the cleaning assembly also includes large hydraulic rods fixedly connected to the top of the left and right sides of the rectangular frame, and the two racks are fixedly connected to the sides close to each other with extrusion plates, and the two extrusion plates are respectively fixedly connected to the two large hydraulic rods.

[0008] Preferably, the cleaning assembly also includes short pipes respectively connected to the two large hydraulic rods, the two short pipes are respectively connected to the two small hydraulic rods close to the two large hydraulic rods, the two large hydraulic rods are both connected with long pipes, the two long pipes are respectively connected to the two small hydraulic rods far away from the two large hydraulic rods, and an injection assembly is fixedly connected to the top inner wall of the bracket. When the two racks drive the workbench to move downward, the two extrusion plates are driven to move to squeeze the two large hydraulic rods, so that the liquid in the large hydraulic rod enters the small hydraulic rod through the short pipe and the long pipe, so that the small hydraulic rod is stretched, and the cleaning blocks are driven to approach each other, so that the cleaning blocks are close to the surface of the battery shell, and under the action of the movement of the battery shell, the surface of the battery shell is cleaned, and when it moves upward toward the rack, the large hydraulic rod is stretched, so as to draw out the liquid in the small hydraulic rod, shorten the small hydraulic rod, and drive the cleaning blocks away from each other, so as to prevent impurities on the surface of the battery shell from affecting the detection results and improve the accuracy of the detection.

[0009] Preferably, the gas injection assembly includes intake pipes that are both connected to the two electric pistons, the two intake pipes extend to the outside of the bracket, the insides of the two intake pipes are rotatably connected to rectangular plate 1, the two electric pistons are connected to a three-way pipe, the outer wall of the three-way pipe is fixedly connected to two rectangular blocks, the two rectangular blocks are fixedly connected to the top inner wall of the bracket, and the insides of the two rectangular blocks are rotatably connected to two rectangular plates 2.

[0010] Preferably, the gas injection assembly also includes a telescopic pipe fixedly connected to the gas outlet hole at the central axis of the three-way pipe, the bottom of the telescopic pipe is connected to a gas injection head, two telescopic suction cups are fixedly connected to the top inner wall of the bracket, and a fixing plate is fixedly connected to the two telescopic suction cups and the gas injection head. The gas injection head is inserted into the gas injection port of the battery shell so that the telescopic suction cup is adsorbed on the surface of the battery shell, and the electric piston is started. When inhaling, the two rectangular plates can only rotate toward the inside of the bracket, so that external air enters the electric piston, so that the gas cannot be discharged through the air intake pipe. In addition, the two rectangular plates can only rotate inwardly, so that the three-way pipe can only discharge the gas, and there is no The method is to extract the air, so that the electric piston moves continuously, and the external air is sucked into the electric piston through the suction pipe, and the air is injected into the battery housing through the three-way pipe through the gas injection head. At the same time, when the rack two descends, the battery housing is driven to be immersed in water. In the process of moving downward, the telescopic suction cup will be stretched, so that the air in the suction cup is extracted, thereby improving the fixation. Under the action of the fixed plate, the telescopic suction cup moves downward and drives the gas injection head to move synchronously through the telescopic pipe. At the same time, observe whether there are bubbles in the water. If no bubbles are generated, it proves that the airtightness of the battery housing is passed. If bubbles are generated, it proves that the airtightness of the battery housing is defective, thereby improving the accuracy of detection.

[0011] A detection method of a battery housing sealing detection device comprises the following steps: S1: Place the battery housing: Place the battery housing on the workbench; S2: Fix the battery shell: attach the telescopic suction cup to the battery shell, so that the gas injection head is connected to the gas injection port of the battery shell; S3: Starting device: The electric piston drives gear 1 to rotate through the connecting rod, so that the two racks 1 move upward in the slide groove and squeeze the two large springs at the same time, so that the large springs generate elastic force. When the two racks 1 move upward, the two racks 2 are driven to move downward through the two gears 2 and the workbench fixed at the bottom is driven to move, so that the battery shell is immersed in water.

[0012] The present invention has the following beneficial effects: When the present invention is in use, it may float in the water under the action of the buoyancy of the water. When the workbench moves downward, the two clamping plates are driven to approach each other by two ropes, and at the same time, the small spring 2 is stretched, so that the small spring 2 generates an inward pulling force. When the battery shell is clamped, the clamping head moves toward the inside of the hollow block under the action of the clamping force, and at the same time, the small spring 1 is squeezed to generate an elastic force of the small spring 1, which plays a buffering role and prevents wear on the outside of the battery shell. When the workbench moves upward, the two clamping plates are driven away from each other under the action of the pulling force of the small spring 2, thereby releasing the clamping of the battery shell, and the clamping head is reset under the action of the elastic force of the small spring 1 to prevent the battery shell from being displaced under the action of the buoyancy of the water, thereby improving the detection efficiency.

[0013] The present invention utilizes the force of the movement of the clamping plates. When the two clamping plates approach each other, the two trapezoidal plates are driven to move into the trapezoidal chute, and at the same time, the water inlet at the bottom is opened to allow the water in the water tank to flow out from the bottom of the workbench. When the workbench moves upward, the two clamping plates will move away from each other, driving the two trapezoidal plates to move to block the water inlet, and the water that has not flowed out will flow into the water tank through the water inlet, preventing the water in the water tank from overflowing through the edge of the workbench, keeping the working area clean, and increasing the service life of the detection equipment.

[0014] The present invention utilizes the moving force of rack two. When the two racks two drive the workbench to move downward, the two extrusion plates are driven to move to squeeze the two large hydraulic rods, so that the liquid in the large hydraulic rod enters the small hydraulic rod through the short pipe and the long pipe, the small hydraulic rod is extended, and the cleaning blocks are driven to approach each other, so that the cleaning blocks are closely attached to the surface of the battery shell. Under the action of the movement of the battery shell, the surface of the battery shell is cleaned. When the rack two moves upward, the large hydraulic rod is extended, so that the liquid in the small hydraulic rod is extracted, the small hydraulic rod is shortened, and the cleaning blocks are driven to move away from each other, so as to prevent impurities on the surface of the battery shell from affecting the detection result and improve the accuracy of the detection.

[0015] The present invention utilizes the force of repeated movement of the electric piston, inserts the gas injection head into the gas injection port of the battery shell, makes the telescopic suction cup adsorbed on the surface of the battery shell, starts the electric piston, and during air inhalation, because the two rectangular plates 1 can only rotate toward the inside of the bracket, external air enters the electric piston, so that the gas cannot be discharged through the air inhalation pipe, and because the two rectangular plates 2 can only rotate inward, the three-way pipe can only discharge the gas but cannot extract the air, so that the electric piston continuously moves to inhale the external air into the electric piston through the air inhalation pipe, and injects the air into the battery shell through the gas injection head through the three-way pipe. At the same time, when the rack 2 descends, the battery shell is driven to be immersed in water. In the process of moving downward, the telescopic suction cup will be stretched, so that the air in the suction cup is extracted, thereby improving the fixation. Under the action of the fixed plate, when the telescopic suction cup moves downward, the gas injection head is driven to move synchronously through the telescopic pipe, and whether bubbles are generated in the water is observed at the same time. If no bubbles are generated, it is proved that the airtightness of the battery shell is passed. If bubbles are generated, it is proved that the airtightness of the battery shell is defective, thereby improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A is an enlarged schematic diagram; Figure 3 It is a schematic diagram of the overall structure of the present invention; Figure 4 is a cross-sectional schematic diagram of the clamping mechanism of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of B; Figure 6 is a cross-sectional schematic diagram of a water inlet assembly of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of middle C; Figure 8 A schematic diagram of a cleaning component of the present invention; Fig. 9 For the present invention Figure 8 A magnified schematic diagram of D in the middle; Fig.10 It is a cross-sectional schematic diagram of the gas injection assembly of the present invention; Fig.11 For the present invention Fig.10 Middle E is an enlarged schematic diagram; Fig.12 It is a schematic diagram of the working process of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. bracket; 11. electric piston; 12. rotating shaft 1; 13. gear 1; 14. connecting rod; 15. slideway; 16. rack 1; 17. large spring; 18. rotating shaft 2; 19. gear 2; 110. rack 2; 111. workbench; 112. water tank; 2. clamping mechanism; 21. hollow groove; 22. clamping plate; 23. hollow block; 24. clamping head; 25. small spring 1; 26. small spring 2; 27. wire wheel; 28. rope; 3. feed Water assembly; 31. Trapezoidal chute; 32. Trapezoidal plate; 33. Water inlet; 4. Cleaning assembly; 41. Rectangular frame; 42. Small hydraulic rod; 43. Cleaning block; 44. Large hydraulic rod; 45. Extrusion plate; 46. Short pipe; 47. Long pipe; 5. Gas injection assembly; 51. Suction pipe; 52. Rectangular plate one; 53. Three-way pipe; 54. Rectangular block; 55. Rectangular plate two; 56. Telescopic pipe; 57. Gas injection head; 58. Telescopic suction cup; 59. Fixed plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] For example, see Figure 1 - Figure 5The present invention is a battery shell sealing detection device, comprising a bracket 1, two electric pistons 11 are fixedly connected to the top inner wall of the bracket 1, two rotating shafts 12 are rotatably connected to the front inner wall of the bracket 1, gears 13 are fixedly connected to the outer walls of the two rotating shafts 12, connecting rods 14 are rotatably connected to the output rods of the two rotating shafts 12, and the two connecting rods 14 are rotatably connected to the two gears 13 on the sides away from the electric pistons 11, and the inner walls of the left and right sides of the bracket 1 are provided with sliding grooves 15, and the inner walls of the two sliding grooves 15 are slidably connected with racks 13. 16, two racks 16 slide through the top of the bracket 1, the top inner walls of the two slide grooves 15 are fixedly connected with large springs 17, the bottoms of the two large springs 17 are fixedly connected with the two racks 16, the front side of the bracket 1 is rotatably connected with two shafts 2 18, the outer walls of the two shafts 2 18 are fixedly connected with gears 2 19, the top of the bracket 1 slides through two racks 2 110, the bottoms of the two racks 2 110 are fixedly connected with a workbench 111, the bottom inner wall of the bracket 1 is fixedly connected with a water tank 112, and the water tank 112 is located below the workbench 111: The clamping mechanism 2 includes three hollow grooves 21 opened on the workbench 111, a clamping plate 22 is slidably connected to the inner wall of the hollow groove 21, a hollow block 23 is fixedly connected to the clamping plate 22, a clamping head 24 is slidably connected to the inner wall of the hollow block 23, a small spring 1 25 is fixedly connected to the right inner wall of the hollow block 23, the left side of the small spring 1 25 is fixedly connected to the clamping head 24, two small springs 26 are fixedly connected to the right side of the clamping plate 22, the right sides of the two small springs 26 are fixedly connected to the right inner wall of the hollow groove 21, two wire wheels 27 are rotatably connected to the inner wall of the hollow groove 21, a rope 28 is fixedly connected to the top inner wall of the bracket 1, the side of the rope 28 away from the top inner wall of the bracket 1 is fixedly connected to the clamping plate 22, the rope 28 is slidably connected to the recesses of the two wire wheels 27, and the hollow groove The bottom of 21 is fixedly connected with a water inlet assembly 3. When the workbench 111 moves downward, the two clamping plates 22 are driven to approach each other through two ropes 28. At the same time, the small spring 26 is stretched, so that the small spring 26 generates an inward pulling force. When the battery shell is clamped, the clamping head 24 moves toward the inside of the hollow block 23 under the action of the clamping force, and at the same time, the small spring 1 25 is squeezed to make the small spring 1 25 generate elastic force, which plays a buffering role and prevents wear on the outside of the battery shell. When the workbench 111 moves upward, under the action of the pulling force of the small spring 26, the two clamping plates 22 are driven away from each other, thereby releasing the clamping of the battery shell, and under the action of the elastic force of the small spring 1 25, the clamping head 24 is reset to prevent the battery shell from being displaced under the action of the buoyancy of water, thereby improving the detection efficiency.

[0021] For example 2, please refer to Figure 6 - Fig.12The present invention is a battery shell sealing detection device. On the basis of Example 1, the water inlet component 3 includes a trapezoidal slide 31 opened at the bottom of the hollow groove 21, the inner wall of the trapezoidal slide 31 is slidably connected with a trapezoidal plate 32, the top of the trapezoidal plate 32 is fixedly connected to the clamping plate 22, and a water inlet 33 is opened at the bottom of the trapezoidal slide 31. The top of the water tank 112 is fixedly connected with a cleaning component 4. When the two clamping plates 22 approach each other, the two trapezoidal plates 32 are driven to move into the trapezoidal slide 31, and the water inlet at the bottom is opened, so that the water in the water tank 112 flows out from the bottom of the workbench 111. When the workbench 111 moves upward, the two clamping plates 22 will move away from each other, driving the two trapezoidal plates 32 to move and block the water inlet, and the water that has not flowed out will flow into the water tank 112 through the water inlet 33, preventing the water in the water tank 112 from overflowing through the edge of the workbench 111, keeping the working area clean, and improving the use of the detection equipment.

[0022] The cleaning assembly 4 comprises a rectangular frame 41 fixedly connected to the top of the water tank 112 , and small hydraulic rods 42 are fixedly connected to the four frames of the rectangular frame 41 , and a cleaning block 43 is fixedly connected to the small hydraulic rods 42 .

[0023] The cleaning assembly 4 also includes large hydraulic rods 44 fixedly connected to the top of the left and right sides of the rectangular frame 41, and the two racks 110 are fixedly connected to the sides close to each other with extrusion plates 45, and the two extrusion plates 45 are fixedly connected to the two large hydraulic rods 44 respectively.

[0024] The cleaning assembly 4 also includes short pipes 46 respectively connected to the two large hydraulic rods 44, and the two short pipes 46 are respectively connected to the two small hydraulic rods 42 close to the two large hydraulic rods 44. The two large hydraulic rods 44 are both connected to long pipes 47, and the two long pipes 47 are respectively connected to the two small hydraulic rods 42 away from the two large hydraulic rods 44. The top inner wall of the bracket 1 is fixedly connected with an air injection assembly 5. When the two racks 110 drive the workbench 111 to move downward, the two extrusion plates 45 are driven to move to squeeze the two large hydraulic rods 44, so that The liquid in the large hydraulic rod 44 enters the small hydraulic rod 42 through the short pipe 46 and the long pipe 47, so that the small hydraulic rod 42 is extended, and the cleaning blocks 43 are driven to approach each other, so that the cleaning blocks 43 are closely attached to the surface of the battery shell. Under the action of the movement of the battery shell, the surface of the battery shell is cleaned. When moving upward toward the rack 2 110, the large hydraulic rod 44 is extended, so that the liquid in the small hydraulic rod 42 is extracted, and the small hydraulic rod 42 is shortened, and the cleaning blocks 43 are driven to move away from each other, so as to prevent impurities on the surface of the battery shell from affecting the detection results and improve the accuracy of the detection.

[0025] The gas injection assembly 5 includes an air intake pipe 51 which is connected to the two electric pistons 11, and the two air intake pipes 51 extend to the outside of the bracket 1. The insides of the two air intake pipes 51 are rotatably connected to a rectangular plate 1 52. A three-way pipe 53 is connected to the two electric pistons 11, and two rectangular blocks 54 are fixedly connected to the outer wall of the three-way pipe 53. The two rectangular blocks 54 are fixedly connected to the top inner wall of the bracket 1, and the insides of the two rectangular blocks 54 are rotatably connected to two rectangular plates 2 55.

[0026] The gas injection assembly 5 also includes a telescopic pipe 56 fixedly connected to the gas outlet hole at the central axis of the three-way pipe 53, and a gas injection head 57 is arranged at the bottom of the telescopic pipe 56. Two telescopic suction cups 58 are fixedly connected to the top inner wall of the bracket 1. A fixing plate 59 is fixedly connected to the two telescopic suction cups 58 and the gas injection head 57. The gas injection head 57 is inserted into the gas injection port of the battery shell so that the telescopic suction cup 58 is adsorbed on the surface of the battery shell. The electric piston 11 is started. When inhaling, the two rectangular plates 52 can only rotate toward the inside of the bracket 1, so that the external air enters the electric piston 11, so that the gas cannot be discharged through the suction pipe 51. Because the two rectangular plates 55 can only rotate inward, the three-way pipe 53 can only do the gas The air cannot be extracted and the electric piston 11 is continuously moved to inhale the external air into the electric piston 11 through the air suction pipe 51, and the air is injected into the battery housing through the three-way pipe 53 via the air injection head 57. At the same time, when the rack 110 descends, the battery housing is driven to be immersed in water. In the process of moving downward, the telescopic suction cup 58 will be stretched to extract the air in the suction cup, thereby improving the fixation. Under the action of the fixing plate 59, the telescopic suction cup 58 moves downward and drives the air injection head 57 to move synchronously through the telescopic pipe 56. At the same time, observe whether there are bubbles in the water. If no bubbles are generated, it proves that the battery housing is airtight. If bubbles are generated, it proves that the airtightness of the battery housing is defective, thereby improving the accuracy of detection.

[0027] The detection method of the battery shell sealing detection device includes the following steps: S1: Placing the battery housing: placing the battery housing on the workbench 111; S2: Fix the battery housing: adsorb the telescopic suction cup 58 on the battery housing, so that the gas injection head 57 is connected to the gas injection port of the battery housing; S3: Starting device: The electric piston 11 drives the gear 13 to rotate through the connecting rod 14, so that the two racks 16 move upward in the slide groove 15 and squeeze the two large springs 17 at the same time, so that the large springs 17 generate elastic force. When the two racks 16 move upward, the two racks 2 110 are driven to move downward through the two gears 2 19 and the workbench 111 fixed at the bottom is driven to move, so that the battery housing is immersed in water.

[0028] A specific application of this embodiment is: when in use, add a proper amount of water into the water tank 112, place the battery shell on the workbench 111, then adsorb the telescopic suction cup 58 on the battery shell, connect the gas injection head 57 with the gas injection port of the battery shell, start the two electric pistons 11, and the electric piston 11 drives the gear 13 to rotate through the connecting rod 14 to make the two racks 16 move upward in the slide groove 15 and squeeze the two large springs 17 at the same time, so that the large springs 17 generate elastic force, when the two racks 16 move upward, the two racks 2 110 are driven to move downward through the two gears 2 19 and the workbench 111 fixedly connected at the bottom is driven to move, so that the battery shell is immersed in water, when the electric piston 11 stops, under the weight of the rack 16 itself and the elastic force of the large spring 17, the two racks 16 are reset to their original positions, and at the same time, the rack 2 110 is driven to move upward through the gear 2 19 to move the workbench 111 out of the water.

[0029] When the battery shell is driven to move, it may float in the water due to the buoyancy of the water. When the workbench 111 moves downward, the two clamping plates 22 are driven closer to each other through the two ropes 28. At the same time, the small spring 26 is stretched, so that the small spring 26 generates an inward pulling force. When the battery shell is clamped, the clamping head 24 moves toward the inside of the hollow block 23 under the action of the clamping force, and at the same time, the small spring 1 25 is squeezed to generate an elastic force of the small spring 1 25, which plays a buffering role and prevents wear on the outside of the battery shell. When the workbench 111 moves upward, under the action of the pulling force of the small spring 26, the two clamping plates 22 are driven away from each other, thereby releasing the clamping of the battery shell, and under the action of the elastic force of the small spring 1 25, the clamping head 24 is reset to prevent the battery shell from being displaced due to the buoyancy of the water, thereby improving the detection efficiency.

[0030] When the workbench 111 moves into the water tank 112, water may overflow from the edge of the water tank 112, resulting in a shortened use time of the detection equipment. When the two clamping plates 22 approach each other, they drive the two trapezoidal plates 32 to move into the trapezoidal chute 31, and at the same time open the water inlet at the bottom, so that the water in the water tank 112 flows out from the bottom of the workbench 111. When the workbench 111 moves upward, the two clamping plates 22 will move away from each other, driving the two trapezoidal plates 32 to move and block the water inlet, and the water that has not flowed out will flow into the water tank 112 through the water inlet 33, preventing the water in the water tank 112 from overflowing through the edge of the workbench 111, keeping the working area clean, and improving the use of the detection equipment.

[0031] When the battery shell is inspected, the detection value may be reduced due to impurities on the surface of the battery shell. When the two racks 110 drive the workbench 111 to move downward, the two extrusion plates 45 are driven to move to squeeze the two large hydraulic rods 44, so that the liquid in the large hydraulic rod 44 enters the small hydraulic rod 42 through the short pipe 46 and the long pipe 47, and the small hydraulic rod 42 is extended, driving the cleaning blocks 43 to approach each other, so that the cleaning blocks 43 are close to the surface of the battery shell. Under the action of the movement of the battery shell, the surface of the battery shell is cleaned. When the rack 110 moves upward, the large hydraulic rod 44 is extended, thereby extracting the liquid in the small hydraulic rod 42, shortening the small hydraulic rod 42, and driving the cleaning blocks 43 to move away from each other, so as to prevent the impurities on the surface of the battery shell from affecting the detection results and improve the accuracy of the detection.

[0032] After the battery shell is placed in the water tank 112, gas is injected into the battery shell to observe whether bubbles are generated, and the sealing of the battery shell is judged. The gas injection head 57 is inserted into the gas injection port of the battery shell, so that the telescopic suction cup 58 is adsorbed on the surface of the battery shell, and the electric piston 11 is started. When inhaling, the two rectangular plates 1 52 can only rotate toward the inside of the bracket 1, so that external air enters the electric piston 11, so that the gas cannot be discharged through the suction pipe 51. Because the two rectangular plates 2 55 can only rotate inward, the three-way pipe 53 can only discharge the gas but cannot extract the air, so that the electric piston 11 continuously moves through The air intake pipe 51 sucks external air into the electric piston 11, and then injects the air into the battery housing through the three-way pipe 53 via the gas injection head 57. At the same time, when the rack 2 110 descends, the battery housing is driven to be immersed in water. During the downward movement, the telescopic suction cup 58 will be stretched to extract the air in the suction cup, thereby improving the fixation. Under the action of the fixed plate 59, the telescopic suction cup 58 moves downward and drives the gas injection head 57 to move synchronously through the telescopic pipe 56. At the same time, observe whether there are bubbles in the water. If no bubbles are generated, it proves that the battery housing is airtight. If bubbles are generated, it proves that the airtightness of the battery housing is defective, thereby improving the accuracy of detection.

[0033] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A battery shell sealing detection device, comprising a bracket (1), wherein two electric pistons (11) are fixedly connected to the top inner wall of the bracket (1), two rotating shafts (12) are rotatably connected to the front inner wall of the bracket (1), the outer walls of the two rotating shafts (12) are fixedly connected to gears (13), the output rods of the two rotating shafts (12) are rotatably connected to connecting rods (14), the sides of the two connecting rods (14) away from the electric pistons (11) are respectively rotatably connected to the two gears (13), the inner walls of the left and right sides of the bracket (1) are each provided with a slide groove (15), the inner walls of the two slide grooves (15) are each slidably connected to a rack (16), and the two racks One (16) slides through the top of the bracket (1), the top inner walls of the two slide grooves (15) are fixedly connected with a large spring (17), the bottoms of the two large springs (17) are respectively fixedly connected to the two racks one (16), the front side of the bracket (1) is rotatably connected to two rotating shafts two (18), the outer walls of the two rotating shafts two (18) are fixedly connected with gears two (19), the top of the bracket (1) slides through two racks two (110), the bottoms of the two racks two (110) are fixedly connected with a workbench (111), the bottom inner wall of the bracket (1) is fixedly connected with a water tank (112), and the water tank (112) is located below the workbench (111), characterized in that Also includes: The clamping mechanism (2) comprises three hollow grooves (21) formed on the workbench (111), a clamping plate (22) being slidably connected to the inner wall of the hollow groove (21), a hollow block (23) being fixedly connected to the clamping plate (22), a clamping head (24) being slidably connected to the inner wall of the hollow block (23), a small spring (25) being fixedly connected to the right inner wall of the hollow block (23), the left side of the small spring (25) being fixedly connected to the clamping head (24), and the right side of the clamping plate (22) being fixedly connected to the inner wall of the hollow block (23). Two small springs (26) are fixedly connected, the right sides of the two small springs (26) are fixedly connected to the right inner wall of the hollow groove (21), two wire wheels (27) are rotatably connected to the inner wall of the hollow groove (21), a rope (28) is fixedly connected to the top inner wall of the bracket (1), the side of the rope (28) away from the top inner wall of the bracket (1) is fixedly connected to the clamping plate (22), the rope (28) is slidably connected to the recessed parts of the two wire wheels (27), and the bottom of the hollow groove (21) is fixedly connected to a water inlet assembly (3).

2. A battery casing sealing detection device according to claim 1, characterized in that: The water inlet assembly (3) comprises a trapezoidal slide groove (31) provided at the bottom of the hollow groove (21); a trapezoidal plate (32) is slidably connected to the inner wall of the trapezoidal slide groove (31); the top of the trapezoidal plate (32) is fixedly connected to the clamping plate (22); a water inlet (33) is provided at the bottom of the trapezoidal slide groove (31); and a cleaning assembly (4) is fixedly connected to the top of the water tank (112).

3. A battery casing sealing detection device according to claim 2, characterized in that: The cleaning assembly (4) comprises a rectangular frame (41) fixedly connected to the top of the water tank (112), four frames of the rectangular frame (41) are fixedly connected to small hydraulic rods (42), and the small hydraulic rods (42) are fixedly connected to a cleaning block (43).

4. A battery casing sealing detection device according to claim 3, characterized in that: The cleaning assembly (4) further comprises large hydraulic rods (44) fixedly connected to the top of the left and right sides of the rectangular frame (41); a squeezing plate (45) is fixedly connected to the sides of the two racks (110) close to each other; and the two squeezing plates (45) are respectively fixedly connected to the two large hydraulic rods (44).

5. A battery casing sealing detection device according to claim 4, characterized in that: The cleaning assembly (4) further comprises short pipes (46) respectively connected to the two large hydraulic rods (44), the two short pipes (46) respectively connected to the two small hydraulic rods (42) close to the two large hydraulic rods (44), the two large hydraulic rods (44) are both connected to long pipes (47), the two long pipes (47) respectively connected to the two small hydraulic rods (42) far from the two large hydraulic rods (44), and the top inner wall of the bracket (1) is fixedly connected to the gas injection assembly (5).

6. A battery casing sealing detection device according to claim 5, characterized in that: The gas injection assembly (5) comprises an air intake pipe (51) which is connected to the two electric pistons (11), the two air intake pipes (51) extend to the outside of the bracket (1), the inside of the two air intake pipes (51) is rotatably connected to a rectangular plate 1 (52), the two electric pistons (11) are connected to a three-way pipe (53), the outer wall of the three-way pipe (53) is fixedly connected to two rectangular blocks (54), the two rectangular blocks (54) are fixedly connected to the top inner wall of the bracket (1), and the inside of the two rectangular blocks (54) is rotatably connected to two rectangular plates 2 (55).

7. A battery casing sealing detection device according to claim 6, characterized in that: The gas injection assembly (5) further comprises a telescopic pipe (56) fixedly connected to the gas outlet hole at the central axis of the three-way pipe (53); a gas injection head (57) is provided at the bottom of the telescopic pipe (56); two telescopic suction cups (58) are fixedly connected to the top inner wall of the bracket (1); and a fixing plate (59) is fixedly connected to the two telescopic suction cups (58) and the gas injection head (57).

8. A method for detecting a battery casing sealing property detection device, using the battery casing sealing property detection device as claimed in claim 7, characterized in that: The steps include: S1: Placing a battery housing: placing the battery housing on a workbench (111); S2: Fixing the battery housing: adsorbing the telescopic suction cup (58) onto the battery housing, so that the gas injection head (57) is connected to the gas injection port of the battery housing; S3: Starting device: The electric piston (11) drives the gear 1 (13) to rotate through the connecting rod (14), so that the two racks 1 (16) move upward in the slide groove (15) and squeeze the two large springs (17) so that the large springs (17) generate elastic force. When the two racks 1 (16) move upward, the two gears 2 (19) drive the two racks 2 (110) to move downward and drive the workbench (111) fixedly connected at the bottom to move, so that the battery housing is immersed in water.

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