New energy automobile battery pack sealing ring detection device

Abstract

The invention discloses a new energy automobile battery pack sealing ring detection device which comprises a detection table, a semicircular block fixedly connected to the top end of the detection table, a lower compression block arranged on the semicircular block, a fixed frame fixedly connected to the top end of the detection table, a top plate fixedly connected to the top end of the fixed frame, a lifting plate arranged below the top plate, and an upper compression block arranged below the lifting plate. The device is provided with a lower compression block, an upper compression block, a T-shaped plate, a detection rod and other structures, not only can one part of a circular sealing ring be clamped between the upper compression block and the lower compression block for compression permanent detection, but also two ends of the other part of the circular sealing ring can be clamped between a long T-shaped block and a short T-shaped block. And then the detection mechanism drives the detection rod to move backwards, so that the circular sealing ring can be subjected to a tensile test, and the circular sealing ring is stretched backwards, so that the stretching direction is consistent with the actual stress direction of the circular sealing ring, the stress in any diameter direction is uniform, and initial bending moment caused by drooping due to gravity is avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive parts testing technology, and in particular to a testing device for the sealing ring of a new energy vehicle battery pack. Background Technology

[0002] The battery pack provides power to new energy vehicles and is a core component of electric vehicles. The safety of the battery pack directly affects the safety of the entire vehicle. The battery pack needs to have good sealing performance because in the daily use of the car, it is necessary to prevent the cells inside the battery pack from short-circuiting due to water ingress, which could lead to safety issues. The sealing ring of the battery pack is mainly used in key sealing parts to ensure the waterproof, dustproof, gas leakage prevention, and insulation safety of the battery system. Furthermore, during the research and development of battery pack sealing rings, materials such as tetrafluoroethylene, propylene copolymer, hydrogenated nitrile rubber, and organomontmorillonite nanosheets are added. The performance of the sealing rings after material improvement also needs to be tested. Therefore, the performance of the sealing rings needs to be tested during the production of the sealing rings.

[0003] A prior art patent, CN118050164B, discloses a rubber sealing ring deformation resistance testing device. This device integrates tensile testing and compression deformation testing, which are the main methods used in deformation resistance testing. A tensile testing unit is used to perform tensile testing on the rubber sealing ring, while a compression testing unit is used to perform compression deformation testing. The two methods can also be combined to obtain comprehensive deformation resistance test results. The included sleeve assembly can accommodate rubber sealing rings of different sizes. Furthermore, multiple rubber sealing rings of the same size can be stacked together to obtain comparative deformation resistance test results for rubber sealing rings of different diameters or the same diameter. This improves testing efficiency and provides more comprehensive and accurate test results.

[0004] The aforementioned device employs a concentric sleeve and annular pressure head structure to test circular sealing rings through radial expansion or axial compression. It also integrates a pre-compression followed by a tensioning action, which can meet multiple testing requirements for circular sealing rings. However, the mating surface of the upper and lower shells of the battery pack is mostly a rectangular closed-loop sealing ring with an elongated oval cross-section. The four corners need to withstand the same 25% design compression as the straight side. The arc-shaped positioning surface of the circular test platform cannot fit with the four corners of the rectangular ring, resulting in the four corners being suspended and uneven compression. Therefore, it is impossible to test the rectangular sealing ring. When it is necessary to test the rectangular sealing ring of the battery pack, the entire positioning core must be replaced, which is quite troublesome.

[0005] Therefore, a new energy vehicle battery pack sealing ring testing device is proposed to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a testing device for the sealing ring of a new energy vehicle battery pack, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a testing device for the sealing ring of a new energy vehicle battery pack, comprising a testing platform, a semi-circular block fixedly connected to the top of the testing platform, a lower compression block provided on the semi-circular block, a fixed frame fixedly connected to the top of the testing platform, a top plate fixedly connected to the top of the fixed frame, a lifting plate provided below the top plate, an upper compression block provided below the lifting plate, the semi-circular block being arranged in a stepped shape, a pair of short T-shaped blocks provided at the top of the semi-circular block, and a long T-shaped block fixedly connected to the bottom of the lifting plate relative to the position above the short T-shaped blocks. A locking mechanism for locking the sealing ring is provided between the block and the upper compression block. Horizontal grooves are provided on both the front and rear sides of the top of the lifting plate relative to the lower compression block. A laser cold cutter is provided above the horizontal end of the top of the lifting plate relative to the horizontal groove. A groove is provided between the top of the semi-circular block and the short T-shaped block. A T-shaped plate is provided inside the groove. A moving groove is provided at the bottom of the T-shaped plate. A moving rod is slidably connected to the inner side of the moving groove. A detection rod is fixedly connected to the top of the moving rod. A detection mechanism is also provided for adjusting the moving rod to move upwards or pulling the detection rod to move backwards.

[0008] In the above technical solution, the top of the top plate is further fixedly connected to an upper electric telescopic cylinder, the output end of the upper electric telescopic cylinder passes through the bottom end of the top plate and is fixedly connected to the bottom end of the lifting plate, the top of the lifting plate is fixedly connected to a horizontal mover at a position next to the laser cold cutter, the side wall of the laser cold cutter is fixedly connected to the moving end of the horizontal mover, the bottom of the top plate is provided with a storage groove at a position above the horizontal mover, and the rear side of the top of the lifting plate is provided with a rear groove.

[0009] In the above technical solution, a pair of upper T-shaped blocks are fixedly connected to the bottom end of the lifting plate, a pair of upper T-shaped grooves are opened at the top of the upper compression block, a pair of lower T-shaped blocks are fixedly connected to the steps of the semi-circular block, a pair of lower T-shaped blocks are opened at the bottom end of the lower compression block, the upper T-shaped blocks and the lower T-shaped blocks are both made of magnetic material, and the upper compression blocks and the lower compression blocks are both made of iron.

[0010] In the above technical solution, the detection mechanism further includes a lower electric telescopic cylinder. A top groove is provided at the top of the detection platform relative to the lower part of the fixed frame. The lower electric telescopic cylinder is fixedly connected to the bottom of the top groove. A U-shaped frame is longitudinally slidably connected to the inner side of the fixed frame. The front side of the U-shaped frame is fixedly connected to the rear side of the T-shaped plate. The rear side of the moving rod is slidably connected to the inner wall of the U-shaped frame. Upper round rods are fixedly connected to both sides of the outer wall of the moving rod. Lower round rods are fixedly connected to both ends of the inner side of the U-shaped frame. A moving frame is provided at the bottom of the fixed frame. The output end of the lower electric telescopic cylinder is fixedly connected to the side wall of the moving frame. Right-angled plates with inclined surfaces are provided on both sides of the top of the moving frame. Pull frames are fixedly connected to the side walls of the right-angled plates relative to the position next to the upper round rods. A bidirectional electric telescopic device is fixedly connected to the top of the moving frame.

[0011] In the above technical solution, furthermore, a rear plate is fixedly connected to the rear side of each pull frame, and the output end of each bidirectional electric telescopic device is fixedly connected to the side wall of the rear plate.

[0012] In the above technical solution, further, an adjustment groove is provided at the top of the semicircular block relative to the position below the short T-shaped block. The short T-shaped blocks are all laterally slidably connected to the inner side of the adjustment groove. A bidirectional lead screw is rotatably connected to the inner side of the adjustment groove. The bidirectional lead screw is threaded through and connected to the inner side wall of the short T-shaped block. A drive motor is fixedly connected to the side wall of the semicircular block. The output end of the drive motor passes through the inner side of the adjustment groove and is fixedly connected to the side wall of the bidirectional lead screw.

[0013] In the above technical solution, the locking mechanism further includes a limiting plate, slots are provided on both sides of the top of the upper compression block, and insert plates are fixedly connected to the top of the lower compression block relative to the position below the slots. Two pairs of limiting plates are provided, and sliding grooves are provided on both sides of the slots. The limiting plates are slidably connected to the inner side of the sliding grooves. The bottom ends of the limiting plates on the side closest to each other are inclined. A pair of limiting springs are fixedly connected between the side wall of the limiting plate and the inner side of the sliding groove. Several right-angled grooves with inclined surfaces are provided at equal intervals on both sides of the insert plates.

[0014] In the above technical solution, the sidewalls of the slide are provided with straight grooves, the sidewalls of the limiting plate are fixedly connected with connecting rods relative to the straight grooves, and the sidewalls of the connecting rods are fixedly connected with release blocks.

[0015] By adopting the above technical solution, dual-fit detection of circular and rectangular sealing rings of the battery pack was achieved.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the new energy vehicle battery pack sealing ring detection device, Equipped with a structure including a lower compression block, an upper compression block, a T-shaped plate, and a detection rod, it can not only clamp a portion of the circular sealing ring between the upper and lower compression blocks for permanent compression testing, but also clamp the other two ends of the circular sealing ring between a long T-shaped block and a short T-shaped block. Then, by driving the detection rod backward through the detection mechanism, a tensile test can be performed on the circular sealing ring. By pulling the circular sealing ring backward, the stretching direction can be aligned with the actual force direction of the circular sealing ring, ensuring uniform force in any diameter direction and preventing initial bending moment due to gravity. Furthermore, this invention, through its bidirectional electric telescopic device and right-angle plate, enables the rectangular battery pack sealing ring to be clamped between the upper and lower compression blocks for permanent compression testing when holding it. Simultaneously, the other two ends of the rectangular sealing ring are clamped between the long T-block and the short T-block. Then, the detection mechanism drives the T-block to move upward, causing the middle of the rectangular sealing ring to move upward for tensile testing. By testing the rectangular sealing ring by moving it upward, both sides of the rectangular sealing ring can be tightened simultaneously, allowing for the measurement of the true corner elongation at break, which more closely approximates the actual stress experienced by the rectangular sealing ring after installation on the battery pack. Attached Figure Description

[0017] Figure 1 This is a frontal perspective view of the detection device of the present invention; Figure 2 Appendix of the present invention Figure 1 A magnified view of the structure at point A in the middle; Figure 3 This is a rear-view three-dimensional structural diagram of the detection device of the present invention; Figure 4 A top-view perspective view of the three-dimensional structure of the circular sealing ring installed on the semi-circular block according to the present invention; Figure 5 This is a three-dimensional structural diagram of the lifting plate, upper electric telescopic cylinder and upper compression block of the present invention, viewed from below. Figure 6 Appendix of the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle; Figure 7 A top-view perspective schematic diagram of the rectangular sealing strip installation structure on the semi-circular block of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the lower compression block and the semi-circular block separated according to the present invention; Figure 9 This is a top-view three-dimensional structural diagram of the fixed frame of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the U-shaped frame, pull frame, and movable frame of the present invention.

[0018] In the diagram: 1. Inspection table; 2. Semicircular block; 3. Lower compression block; 4. Fixed frame; 5. Lifting plate; 6. Upper compression block; 7. Short T-block; 8. Long T-block; 9. Horizontal groove; 10. Laser cold cutter; 11. T-plate; 12. Moving rod; 13. Inspection rod; 14. Upper electric telescopic cylinder; 15. Upper T-block; 16. Upper T-groove; 17. Lower T-block; 18. Lower T-groove; 19. Lower electric telescopic cylinder 20. Horizontal slider; 21. U-shaped frame; 22. Upper round rod; 23. Lower round rod; 24. Moving frame; 25. Right angle plate; 26. Pull frame; 27. Back plate; 28. Two-way lead screw; 29. ​​Drive motor; 30. Top plate; 31. Rear groove; 32. Limiting plate; 33. Slot; 34. Insert plate; 35. Right angle groove; 36. Connecting rod; 37. Release block; 38. Two-way electric telescopic device; 39. Limiting spring. Detailed Implementation

[0019] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In practical use, it was found that the existing battery pack upper and lower shell mating surfaces are mostly rectangular closed-loop sealing rings with an elongated oval cross-section. The four corners need to withstand the same 25% design compression as the straight side. The arc-shaped positioning surface of the circular test platform cannot fit with the four corners of the rectangular ring, resulting in the four corners being suspended and uneven compression. Therefore, it is impossible to test the rectangular sealing ring. When it is necessary to test the rectangular sealing ring of the battery pack, the entire positioning core must be replaced, which is quite troublesome. To solve the above problems, the following structure was invented.

[0021] like Figures 1-10The device shown is a testing device for the sealing ring of a new energy vehicle battery pack. It includes a testing platform 1, a semi-circular block 2 fixedly connected to the top of the testing platform 1, a lower compression block 3 on the semi-circular block 2, a fixed frame 4 fixedly connected to the top of the testing platform 1, a top plate 30 fixedly connected to the top of the fixed frame 4, a lifting plate 5 below the top plate 30, and an upper compression block 6 below the lifting plate 5. The semi-circular block 2 is stepped, and a pair of short T-shaped blocks 7 are located at the top of the semi-circular block 2. A long T-shaped block 8 is fixedly connected to the bottom of the lifting plate 5 above the short T-shaped blocks 7. A locking mechanism for locking the sealing ring is provided between the lower compression block 3 and the upper compression block 6. Horizontal grooves 9 are provided on both the front and rear sides of the top of the lifting plate 5 relative to the lower compression block 3. A laser cold cutter 10 is located above the horizontal ends of the horizontal grooves 9 on the top of the lifting plate 5. The laser cold cutter 10 uses a femtosecond laser. Alternatively, a picosecond laser can be used, with a heat-affected zone of less than 30μm. The cut is free of scorching and flash, and the sealing ring cross-section maintains its original elasticity and strength. The cutting speed is fast and the precision is high. Complex contours can be formed in one step, eliminating the need for secondary grinding. This can improve the accuracy and repeatability of compression set testing. A groove is provided at the top of the semi-circular block 2 relative to the short T-shaped block 7. A T-shaped plate 11 is provided inside the groove. A moving groove is provided at the bottom of the T-shaped plate 11. A moving rod 12 is slidably connected to the moving groove. A detection rod 13 is fixedly connected to the top of the moving rod 12. It should be noted that both the detection rod 13 and the T-shaped plate 11 are equipped with monitors for real-time monitoring of the sealing ring tensile data. The monitors are mature technologies in the prior art, so they will not be described in detail here. A detection mechanism is also provided for adjusting the moving rod 12 to move upward or pulling the detection rod 13 to move backward. An upper electric telescopic cylinder 14 is fixedly connected to the top of the top plate 30. The output end of the upper electric telescopic cylinder 14 passes through the bottom end of the top plate 30 and is fixedly connected to the bottom end of the lifting plate 5. A horizontal mover 20 is fixedly connected to the top of the lifting plate 5 relative to the position next to the laser cold cutter 10. The horizontal mover 20 is mainly composed of a motor and a lead screw, which can drive the laser cold cutter 10 to move laterally on the lifting plate 5. This is a mature technology in the prior art and will not be described in detail here. The side walls of the laser cold cutter 10 are fixedly connected to the moving end of the horizontal mover 20. A storage groove is opened at the bottom of the top plate 30 relative to the position above the horizontal mover 20. The storage groove is designed to avoid obstructing the reset of the horizontal mover 20 and the laser cold cutter 10. A rear groove 31 is opened at the rear side of the top of the lifting plate 5. The rear groove 31 is designed to avoid obstructing the normal upward stretching detection of the rectangular sealing ring. The testing mechanism includes a lower electric telescopic cylinder 19. A top groove is provided at the top of the testing platform 1 relative to the position below the fixed frame 4. The lower electric telescopic cylinder 19 is fixedly connected to the bottom of the top groove. A U-shaped frame 21 is longitudinally slidably connected to the inner side of the fixed frame 4. The front side of the U-shaped frame 21 is fixedly connected to the rear side of the T-shaped plate 11. The rear side of the moving rod 12 is slidably connected to the inner wall of the U-shaped frame 21. Upper round rods 22 are fixedly connected to both sides of the outer wall of the moving rod 12. Lower round rods 23 are fixedly connected to both ends of the inner side of the U-shaped frame 21. A moving frame 24 is provided at the bottom of the fixed frame 4. The output end of the lower electric telescopic cylinder 19 is fixedly connected to the side wall of the moving frame 24. Right angle plates 25 with inclined surfaces are provided on both sides of the top of the moving frame 24. Pull frames 26 are fixedly connected to the side walls of the right angle plates 25 relative to the position next to the upper round rods 22. A bidirectional electric telescopic device 38 is fixedly connected to the top of the moving frame 24. The rear plate 27 is fixedly connected to the rear side of the pull frame 26, and the output end of the bidirectional electric telescopic device 38 is fixedly connected to the side wall of the rear plate 27. When testing the circular sealing ring of a new energy vehicle battery pack, the circular sealing ring is first placed on the lower compression block 3 and the short T-shaped block 7, and the testing rod 13 is placed inside the circular sealing ring. Then, the upper electric telescopic cylinder 14 is started to drive the lifting plate 5 to move downward, and at the same time, the long T-shaped block 8 and the upper compression block 6 are moved downward together, clamping a part of the circular sealing ring between the lower compression block 3 and the upper compression block 6. At the same time, by driving the long T-shaped block 8 to move downward, the other two ends of the circular sealing ring are clamped between the short T-shaped block 7 and the long T-shaped block 8. Then, the laser cold cutter 10 is started to cut off the excess circular sealing ring on the front and rear sides of the lower compression block 3, and cut off the circular sealing ring between the short T-shaped block 7 and the lower compression block 3, ensuring the independence of the two tests. Then, the lower electric telescopic cylinder 19 can be controlled to start and drive the moving frame 24 to move. At the same time, since the bidirectional electric telescopic device 38 is fixed on the moving frame 24, it will drive the bidirectional electric telescopic device 38, the rear plate 27, the pull frame 26 and the right angle plate 25 to move backward together. At this time, the upper round rod 22 is located inside the pull frame 26, and the lower round rod 23 and the right angle plate 25 are staggered. Therefore, by moving the pull frame 26 and the right angle plate 25 backward, the upper round rod 22, the moving rod 12 and the detection rod 13 will be pulled backward together. Since the right angle plate 25 and the lower round rod 23 are staggered, and the U-shaped frame 21 can only slide longitudinally inside the fixed frame 4, it will not affect the position of the U-shaped frame 21. Thus, by moving the detection rod 13 backward, the circular sealing ring between the short T-blocks 7 will be pulled backward, thereby realizing the tensile test of the circular sealing ring. After the test is completed, the control equipment is reset and the circular sealing ring can be removed. When testing the rectangular sealing ring on the battery pack, place the rectangular sealing ring on the lower compression block 3 and the short T-block 7 (note that when placing it, both ends of the rectangular sealing ring should be placed on the short T-blocks 7 on both sides). Then, control the upper electric telescopic cylinder 14 to start and repeat the above process, clamping the rectangular sealing ring between the short T-block 7 and the long T-block 8, and clamping the other part of the rectangular sealing ring between the upper compression block 6 and the lower compression block 3. Then, control the equipment and select the rectangular sealing ring test. At this time, the controller will control the bidirectional electric telescopic device 38 to start, driving the rear plate 27 and the pull frame 26 to move to both sides, thereby moving the upper round rod 22 out of the pull frame 26, and at the same time, the right angle... Plate 25 moves below the lower round rod 23, and then controls the lower electric telescopic cylinder 19 to start and drive the moving frame 24 to move. This will drive the bidirectional electric telescopic device 38, the rear plate 27, the pull frame 26 and the right angle plate 25 to move backward. Since the U-shaped frame 21 can only move longitudinally in the fixed frame 4, as the right angle plate 25 moves backward, the inclined surface of the right angle plate 25 will gradually squeeze the lower round rod 23 to move upward, thereby driving the U-shaped frame 21 and the T-shaped plate 11 to move upward, thereby moving and stretching the rectangular sealing ring part clamped between the short T-shaped blocks 7 upward. During this process, the moving rod 12 and the detection rod 13 will move upward together. Finally, after the stretching test is completed, the equipment can be controlled to reset and the rectangular sealing ring can be removed.

[0022] In summary, the above structural design not only allows the two ends of the circular sealing ring to be clamped between the long T-block 8 and the short T-block 7, but also enables the detection rod 13 to be moved backward by the detection mechanism to perform a tensile test on the circular sealing ring. Furthermore, pulling the circular sealing ring backward ensures that the stretching direction is consistent with the actual force direction of the circular sealing ring, resulting in uniform force distribution along any diameter direction and preventing initial bending moment due to gravity. Moreover, clamping the two ends of the rectangular sealing ring between the long T-block 8 and the short T-block 7, and then moving the T-plate 11 upward by the detection mechanism, causes the middle of the rectangular sealing ring to move upward for tensile testing. Detecting the rectangular sealing ring by moving it upward allows both sides of the rectangular sealing ring to be simultaneously tightened, measuring the true corner elongation at break, which more closely approximates the actual force experienced by the rectangular sealing ring after installation on the battery pack.

[0023] Based on the above embodiments, it was found during use that the short T-shaped block 7 in the above structure is fixed in position, and thus can only detect circular or rectangular sealing rings of the same size, which is relatively limited and cannot meet the diverse detection needs of users. In order to solve the above problems, the above structure has been further improved.

[0024] An adjustment groove is provided at the top of the semicircular block 2 relative to the position below the short T-block 7. The short T-block 7 is slidably connected to the inner side of the adjustment groove. A bidirectional lead screw 28 is rotatably connected to the inner side of the adjustment groove. The bidirectional lead screw 28 is threaded through and connected to the inner side wall of the short T-block 7. A drive motor 29 is fixedly connected to the side wall of the semicircular block 2. The output end of the drive motor 29 passes through the inner side of the adjustment groove and is fixedly connected to the side wall of the bidirectional lead screw 28. When it is necessary to test rectangular or circular sealing rings of different sizes, the drive motor 29 can be started to drive the bidirectional lead screw 28 to rotate, thereby driving the threaded short T-block 7 to move to both sides, thus changing the clamping position of the short T-block 7, which can be used to test rectangular or circular sealing rings of different sizes.

[0025] In summary, the design of the above structure allows for flexible adjustment of the position of the short T-block 7, enabling clamping and detection of both ends of circular and rectangular sealing rings of different sizes, thus greatly improving the flexibility of the device.

[0026] Based on the above embodiments, it was found during use that although the above structure satisfies the dual-adaptation tensile testing of circular and rectangular sealing rings, it cannot be used for the compression permanent testing of sealing rings. To solve the above problem, the above structure has been further improved.

[0027] A pair of upper T-shaped blocks 15 are fixedly connected to the bottom of the lifting plate 5. A pair of upper T-shaped grooves 16 are opened at the top of the upper compression block 6. A pair of lower T-shaped blocks 17 are fixedly connected to the steps of the semi-circular block 2. A pair of lower T-shaped grooves 18 are opened at the bottom of the lower compression block 3. Both the upper T-shaped blocks 15 and the lower T-shaped blocks 17 are made of magnetic material. Both the upper compression block 6 and the lower compression block 3 are made of iron material. The setting of the upper T-shaped blocks 15 and the lower T-shaped blocks 17 makes it easy to remove the upper compression block 6 and the lower compression block 3. The locked sealing ring and the upper compression block 6 and the lower compression block 3 can be taken into the temperature control box for further testing. At the same time, the use of magnetic and iron materials can ensure the stability of the upper compression block 6 and the lower compression block 3 after insertion, thereby ensuring the accurate docking of the two in the future. The locking mechanism includes a limiting plate 32. Slots 33 are provided on both sides of the top of the upper compression block 6. Insert plates 34 are fixedly connected to the top of the lower compression block 3 at the position below the slots 33. The limiting plate 32 is provided with two pairs. Slots are provided on both sides of the slots 33. The limiting plates 32 are slidably connected to the inner side of the slots. The bottom ends of the limiting plates 32 on the side closest to each other are inclined. A pair of limiting springs 39 are fixedly connected between the side wall of the limiting plate 32 and the inner side of the slot. Several right-angled slots 35 with inclined surfaces are provided at equal intervals on both sides of the insert plate 34. Straight grooves are provided on the sidewalls of the chute. A connecting rod 36 is fixedly connected to the sidewall of the limiting plate 32 relative to the straight groove. A release block 37 is fixedly connected to the sidewall of the connecting rod 36. When inspecting a circular or rectangular sealing ring, the upper electric telescopic cylinder 14 drives the lifting plate 5 to move downward, which in turn moves the upper compression block 6 downward. The slot 33 on the upper compression block 6 then passes through the insert plate 34, and the upper compression block 6 gradually merges with the lower compression block 3, clamping the circular or rectangular sealing ring between them. During this process, when the limiting plate 32 moves onto the insert plate 34, the inclined surface of the right-angle groove 35 on the insert plate 34 presses against the inclined surface of the limiting plate 32. Since the limiting plate 32 can only slide laterally inside the groove, it is pressed into the groove, compressing the limiting spring 39. Then, when the limiting plate 32 moves out from the inclined surface of the right-angle groove 35, it moves to the next right-angle groove 35, thus releasing the pressure on the limiting plate 32. Under the elastic force of the limiting spring 39, the limiting plate 32 is pushed to reset, so that the limiting plate 32 is stuck at the bottom of the first right angle groove 35. Then, as the upper compression block 6 continues to move down, the inclined surface of the second right angle groove 35 will squeeze the inclined surface of the limiting plate 32. Repeat the above operation until the upper compression block 6 clamps the sealing ring between the lower compression block 3 and the upper compression block 6 according to the specified compression degree. At the same time, the limiting plate 32 is inserted into the corresponding right angle groove 35, which restricts the upward sliding of the limiting plate 32, thereby restricting the upward movement of the upper compression block 6, ensuring the compression degree of the sealing ring. Then, after the laser cold cutter 10 cuts off the excess part of the sealing ring, the upper compression block 6 and the lower compression block 3 can be pulled out from the detection table 1. Then, after the upper electric telescopic cylinder 14 drives the lifting plate 5 to reset, a new upper compression block 6 and lower compression block 3 are installed and squeezed. After the rubber strip compression test is completed, the release block 37 can be pushed to both sides, and the limiting plate 32 can be moved out of the right angle groove 35 through the connecting rod 36. At the same time, the limiting spring 39 is compressed, which can release the restriction on the upper compression block 6 and remove the upper compression block 6.

[0028] In summary, the above structural design not only allows for permanent compression testing by clamping a portion of the circular sealing ring between the upper compression block 6 and the lower compression block 3, but also enables permanent compression testing by clamping a portion of the rectangular sealing ring between the upper compression block 6 and the lower compression block 3 while holding the rectangular battery pack sealing ring, greatly improving the flexibility of the device.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention.

[0030] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A testing device for the sealing ring of a new energy vehicle battery pack, comprising a testing platform (1), characterized in that: The top of the testing platform (1) is fixedly connected to a semi-circular block (2), and a lower compression block (3) is provided on the semi-circular block (2). The top of the testing platform (1) is fixedly connected to a fixed frame (4), and the top of the fixed frame (4) is fixedly connected to a top plate (30). A lifting plate (5) is provided below the top plate (30), and an upper compression block (6) is provided below the lifting plate (5). The semi-circular block (2) is set in a stepped shape, and a pair of short T-shaped blocks (7) are provided at the top of the semi-circular block (2). A long T-shaped block (8) is fixedly connected to the bottom of the lifting plate (5) above the short T-shaped blocks (7). A locking sealing ring is provided between the lower compression block (3) and the upper compression block (6). The locking mechanism has a horizontal groove (9) on the top of the lifting plate (5) relative to the front and rear sides of the lower compression block (3). A laser cold cutter (10) is provided above the horizontal end of the top of the lifting plate (5) relative to the horizontal groove (9). A groove is provided between the top of the semi-circular block (2) and the short T-shaped block (7). A T-shaped plate (11) is provided inside the groove. A moving groove is provided at the bottom of the T-shaped plate (11). A moving rod (12) is slidably connected to the inside of the moving groove. A detection rod (13) is fixedly connected to the top of the moving rod (12). A detection mechanism is also provided for adjusting the moving rod (12) to move upward or pulling the detection rod (13) to move backward.

2. The new energy vehicle battery pack sealing ring testing device according to claim 1, characterized in that: The top of the top plate (30) is fixedly connected to an upper electric telescopic cylinder (14). The output end of the upper electric telescopic cylinder (14) passes through the bottom of the top plate (30) and is fixedly connected to the bottom of the lifting plate (5). The top of the lifting plate (5) is fixedly connected to a horizontal mover (20) at a position next to the laser cold cutter (10). The side walls of the laser cold cutter (10) are fixedly connected to the moving end of the horizontal mover (20). The bottom of the top plate (30) is provided with a storage groove at a position above the horizontal mover (20). The rear side of the top of the lifting plate (5) is provided with a rear groove (31).

3. The new energy vehicle battery pack sealing ring testing device according to claim 1, characterized in that: The bottom end of the lifting plate (5) is fixedly connected to a pair of upper T-shaped blocks (15), the top end of the upper compression block (6) is provided with a pair of upper T-shaped grooves (16), the steps of the semi-circular block (2) are fixedly connected to a pair of lower T-shaped blocks (17), the bottom end of the lower compression block (3) is provided with a pair of lower T-shaped grooves (18), the upper T-shaped blocks (15) and the lower T-shaped blocks (17) are both made of magnetic material, and the upper compression block (6) and the lower compression block (3) are both made of iron material.

4. The new energy vehicle battery pack sealing ring testing device according to claim 1, characterized in that: The testing mechanism includes a lower electric telescopic cylinder (19). A top groove is provided at the top of the testing platform (1) relative to the position below the fixed frame (4). The lower electric telescopic cylinder (19) is fixedly connected to the bottom of the top groove. A U-shaped frame (21) is longitudinally slidably connected to the inner side of the fixed frame (4). The front side of the U-shaped frame (21) is fixedly connected to the rear side of the T-shaped plate (11). The rear side of the moving rod (12) is slidably connected to the inner wall of the U-shaped frame (21). Upper round rods (2) are fixedly connected to both sides of the outer wall of the moving rod (12). 2) Both ends of the U-shaped frame (21) are fixedly connected to the lower round rod (23). The bottom of the fixed frame (4) is provided with a movable frame (24). The output end of the lower electric telescopic cylinder (19) is fixedly connected to the side wall of the movable frame (24). Both sides of the top of the movable frame (24) are provided with right angle plates (25) with inclined surfaces. The side wall of the right angle plate (25) is fixedly connected to the pull frame (26) at the position next to the upper round rod (22). The top of the movable frame (24) is fixedly connected to a bidirectional electric telescopic device (38).

5. The new energy vehicle battery pack sealing ring testing device according to claim 4, characterized in that: The rear side of each pull frame (26) is fixedly connected to a rear plate (27), and the output end of each bidirectional electric telescopic device (38) is fixedly connected to the side wall of the rear plate (27).

6. The new energy vehicle battery pack sealing ring testing device according to claim 1, characterized in that: An adjustment groove is provided at the top of the semicircular block (2) relative to the position below the short T-shaped block (7). The short T-shaped blocks (7) are all slidably connected to the inner side of the adjustment groove. A double-acting screw (28) is rotatably connected to the inner side of the adjustment groove. The double-acting screw (28) is threaded through and connected to the inner side wall of the short T-shaped block (7). A drive motor (29) is fixedly connected to the side wall of the semicircular block (2). The output end of the drive motor (29) passes through the inner side of the adjustment groove and is fixedly connected to the side wall of the double-acting screw (28).

7. The new energy vehicle battery pack sealing ring testing device according to claim 1, characterized in that: The locking mechanism includes a limiting plate (32), slots (33) are provided on both sides of the top of the upper compression block (6), and insert plates (34) are fixedly connected to the top of the lower compression block (3) at a position below the slots (33). The limiting plate (32) is provided in two pairs, and sliding grooves are provided on both sides of the slots (33). The limiting plate (32) is slidably connected to the inner side of the sliding groove. The bottom ends of the limiting plates (32) on the side closest to each other are inclined. A pair of limiting springs (39) are fixedly connected between the side wall of the limiting plate (32) and the inner side of the sliding groove. Several right-angled grooves (35) with inclined surfaces are provided at equal intervals on both sides of the insert plate (34).

8. The new energy vehicle battery pack sealing ring testing device according to claim 7, characterized in that: The sidewalls of the slide are all provided with straight grooves, and the sidewalls of the limiting plate (32) are fixedly connected to the connecting rod (36) in the straight groove. The sidewalls of the connecting rod (36) are all fixedly connected to the release block (37).

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