A kind of acupuncture equipment for underbody

Abstract

The present application relates to the technical field of battery puncture test, and specifically discloses a vehicle bottom puncture device, including a bottom plate and a ground rail, a roller is provided at the bottom of the bottom plate, the roller is located in the ground rail, a slide rail is provided on the bottom plate, the slide rail is vertically arranged with the ground rail, a mounting plate is slidably connected to the slide rail, a clamping assembly and a first cylinder for driving the clamping assembly are provided on the mounting plate, a plug bolt is threadedly connected to the bottom plate, a first spring is sleeved on the plug bolt, a top plate is slidably connected to the plug bolt, one end of the first spring is connected to the top plate, and the other end of the first spring is connected to the plug bolt, a first electromagnet is provided between the bottom plate and the ground rail, a guide column is connected to the first electromagnet, and one end of the guide column passes through the bottom plate and is connected to the top plate. The present application has the effect of taking into account both the test accuracy and responsiveness of the puncture test.

Description

Technical Field

[0001] The present application relates to the technical field of battery puncture testing, and in particular to a vehicle bottom puncture device. Background Art

[0002] Batteries are the core components of new energy vehicles, and their safety performance is related to the reliability of the entire vehicle and the safety of users. Among them, lithium-ion batteries are widely used due to their high energy density, but under the conditions of collision, extrusion or puncture, the battery is prone to diaphragm rupture, positive and negative short circuits and other faults, causing thermal runaway and leading to fire and explosion. Therefore, reliability testing of batteries is a key link before new energy vehicles leave the factory.

[0003] The needle puncture test is a common battery safety performance testing method. By piercing the battery with a steel needle to trigger an internal short circuit, it can effectively evaluate the battery's ability to suppress thermal runaway and the effectiveness of the protection design. Traditional mobile needle puncture machines mostly use universal wheels to achieve position adjustment. Although they have a certain degree of flexibility, it is difficult to achieve precise positioning of the puncture point, and the clamping force of the locking device is limited. When the reaction force is impacted at the moment of puncture, the equipment is prone to displacement, affecting the accuracy of the data.

[0004] For the bottom needle penetration test of the whole vehicle or large battery pack, if a fixed needle penetration machine is used, the positioning accuracy can be improved, but the flexibility of the test will be sacrificed; if the traditional universal wheel movement solution is adopted, repeated calibration and locking are required, which greatly reduces the test efficiency.

[0005] Therefore, there is an urgent need to provide a needling device with both high positioning accuracy and rapid response capability to improve the defects of common needling machines. Summary of the invention

[0006] In order to take into account both the test accuracy and response capability of the acupuncture test, the present application provides a vehicle bottom acupuncture device, which adopts the following technical solution:

[0007] A vehicle underbody acupuncture device comprises a bottom plate and a ground rail, wherein a roller is provided at the bottom of the bottom plate, the roller is located inside the ground rail, a slide rail is provided on the bottom plate, the slide rail is vertically arranged to the ground rail, a mounting plate is slidably connected to the slide rail, a clamping assembly and a first cylinder for driving the clamping assembly are provided on the mounting plate, a plug bolt is threadedly connected to the bottom plate, a first spring is sleeved on the plug bolt, a top plate is slidably connected to the plug bolt, one end of the first spring is connected to the top plate, and the other end of the first spring is connected to the plug bolt, a first electromagnet is provided between the bottom plate and the ground rail, a guide column is connected to the first electromagnet, and one end of the guide column passes through the bottom plate and is connected to the top plate.

[0008] By adopting the above technical solution, when performing a bottom needle penetration test on a new energy vehicle battery pack, the position of the bottom plate on the ground rail is determined by a roller, and then the top plate is pressed down to make the first electromagnet contact the ground rail, so that the first electromagnet is energized, thereby locking the position of the bottom plate;

[0009] Move the mounting plate on the slide rail to determine the position of the mounting plate, then install the steel needle on the clamping assembly, start the first cylinder, push the steel needle into the battery pack, and after the needle puncture test is completed, start the first cylinder to lower the clamping assembly, turn off the first electromagnet, and then the bottom plate can be moved to the next required position;

[0010] Through the cooperation of the ground rail and the slide rail, the steel needle has higher positioning accuracy and faster response capability, which improves the defect of common acupuncture machines that it is difficult to balance flexibility and test efficiency, and the setting of the first electromagnet improves the stability during the test.

[0011] Optionally, a panel is provided between the top plate and the bottom plate, the driving bolts penetrate the panel, the panel is fixed to the bottom plate by studs, and the guide column penetrates the panel and is slidably connected to the panel.

[0012] By adopting the above technical solution, the setting of the enclosure not only plays a role in limiting the top plate, but also improves the stability of the top plate, the guide column and the first electromagnet.

[0013] Optionally, four guide columns are provided, and the guide columns are located at four corners of the top plate. A linear bearing is connected to the bottom plate, and the guide columns are slidably connected in the linear bearing.

[0014] Optionally, a lead screw is provided on the base plate, an output shaft of the lead screw is arranged parallel to the slide rail, a threaded block is threadedly connected to the output shaft of the lead screw, and the threaded block is fixed to the mounting plate.

[0015] By adopting the above technical solution, the setting of the lead screw enables the positioning of the mounting plate to be completed mechanically, thereby improving the test efficiency and positioning accuracy.

[0016] Optionally, a sliding block is slidably connected to the slide rail, the sliding block is fixed to a mounting plate, a track cover is connected to the base plate, the track cover is located above the slide rail, and the sliding block is slidably connected to the track cover.

[0017] By adopting the above technical solution, the provision of the track cover can prevent liquid accumulation in the slide rail, thereby improving the safety of the needle puncture test.

[0018] Optionally, an electric cylinder cover is provided on the mounting plate, and the electric cylinder cover covers the first cylinder, and the output shaft of the first cylinder passes through the electric cylinder cover.

[0019] Optionally, the clamping assembly includes a connecting seat, a second electromagnet and an oblique well are provided on the connecting seat, the oblique well is in conflict with the second electromagnet, a connecting tube is provided on the second electromagnet, a first clamping groove is provided on one side of the connecting tube, a connecting column is inserted in the connecting tube, a second clamping groove is provided on one side of the connecting column, the first clamping groove and the second clamping groove are connected, a clamping piece is provided in the second clamping groove, a second cylinder is provided on one side of the oblique well, the output shaft of the second cylinder passes through the oblique well, a clamping block is connected to the output shaft of the second cylinder, the clamping block is inserted in the first clamping groove, a third clamping groove is provided on the clamping block, the clamping piece is inserted in the third clamping groove, and a chuck is connected to the connecting column.

[0020] By adopting the above technical solution, when performing a bottom puncture test on a new energy vehicle battery pack, a chuck is used to clamp a steel needle, and the electromagnet is energized to fix the position of the inclined well and the connecting tube, and the cylinder is started to push the clamping block into the first clamping groove, and the clamping piece is inserted into the third clamping groove, thereby locking the clamping block, the connecting column and the connecting tube, and the connecting seat rises, so that the steel needle is inserted into the battery pack;

[0021] If the steel needle needs to be pulled out, the connecting seat is directly lowered; if the steel needle needs to be left in the battery pack for further observation, the cylinder can be started to separate the clamping block from the connecting tube, and then the connecting seat is lowered. The chuck and the connecting column will remain under the battery pack together with the steel needle, making the post-processing plan of the puncture test selectable, thereby improving the test efficiency.

[0022] Optionally, a vertical launch well is provided on the connecting seat, the vertical launch well is in conflict with the oblique launch well, the second electromagnet is located between the vertical launch well and the oblique launch well, and the side wall of the second electromagnet is in conflict with the inner wall of the vertical launch well.

[0023] Optionally, a limit slot is provided on the vertical launch shaft, a limit block is fixed on one side of the second electromagnet, and the limit block is located in the limit slot.

[0024] Optionally, a connecting block is provided on the connecting seat, and the connecting block is connected to the inclined launch well through a torsion spring. When the bottom of the inclined launch well is in full contact with the connecting seat, the torsion spring is in a natural state.

[0025] By adopting the above technical solution, when the steel needle is too long, an escape state can be adopted. After the needle is pulled out, the electromagnet is powered off. In the process of pulling the connecting seat, the steel needle encounters an obstacle, and the oblique well flips a certain angle to avoid danger. After the escape is completed, the oblique well can be reset under the action of the tension spring, so that the test efficiency of the needle puncture test is further improved. While accurately simulating bottom puncture, an optional post-processing solution is provided, which can be flexibly applied to different scenarios.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Through the cooperation of the ground rail and the slide rail, the steel needle has higher positioning accuracy and faster response ability, which improves the defects of common acupuncture machines that are difficult to balance flexibility and test efficiency, and the setting of the first electromagnet improves the stability during the test;

[0028] 2. The setting of the lead screw enables the positioning of the mounting plate to be completed mechanically, which improves the test efficiency and positioning accuracy;

[0029] 3. When the steel needle is too long, an escape state can be adopted. After the needle is pulled out, the electromagnet is powered off. In the process of pulling the connecting seat, the steel needle encounters an obstacle, and the oblique well flips a certain angle to avoid danger. After the escape, the oblique well can be reset under the action of the tension spring, so that the test efficiency of the needle puncture test is further improved. While accurately simulating the bottom puncture, it provides an optional post-processing solution, which can be flexibly applied to different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a vehicle bottom acupuncture device in an embodiment of the present application.

[0031] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0032] Figure 3 It is a structural schematic diagram of a vehicle underbody acupuncture device in an embodiment of the present application when the electric cylinder cover and the shield cover are hidden.

[0033] Figure 4 It is a schematic diagram of the structure of the magnetic attraction component in the embodiment of the present application.

[0034] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0035] Figure 6 It is a schematic diagram of the structure of the clamping assembly in an embodiment of the present application.

[0036] Figure 7 It is a schematic diagram of the structure of the connecting seat, the mounting block and the connecting block in the embodiment of the present application.

[0037] Figure 8 It is a top view of the clamping assembly in the embodiment of the present application.

[0038] Fig. 9 is along Figure 8 Cross-sectional view along the AA direction.

[0039] Fig.10 It is a structural schematic diagram of the first base, the connecting tube, the second base, the connecting column and the clamping block in the embodiment of the present application.

[0040] Fig.11 It is a schematic diagram of the structure of the vertical launch shaft in the embodiment of the present application.

[0041] Fig.12 is along Figure 8 Cross-sectional view along the BB direction.

[0042] Fig.13 is along Figure 8 Cross-sectional view along CC direction.

[0043] Fig.14 It is a schematic diagram of the structure of the oblique launch well in an embodiment of the present application.

[0044] Fig.15 It is a schematic diagram of the structure of the clamping assembly during escape in an embodiment of the present application.

[0045] Explanation of the reference numerals: 1. ground rail; 2. reinforcement rod; 3. bottom plate; 4. roller; 5. slide rail; 6. sliding block; 7. track cover; 8. lead screw; 9. threaded block; 10. lifting ring; 11. mounting plate; 12. top plate; 13. enclosure; 14. cover plate; 15. plug bolt; 16. linear bearing; 17. guide column; 18. stud; 19. first electromagnet; 20. handle; 21. first spring; 22. first cylinder; 23. shield cover; 24. electric cylinder cover; 25. pressure gauge; 26. connecting seat; 27. mounting block; 28. mounting groove; 29. ​​first accommodating groove; 30. connecting block; 31. connecting groove; 32. second electromagnet; 33. first base; 34. connecting tube; 35. second base; 36. 6. Protective cover; 37. Mounting ring; 38. Clamp; 39. Limit block; 40. Latch; 41. First clamping groove; 42. Connecting column; 43. Second clamping groove; 44. Clamping piece; 45. Connecting platform; 46. Plug block; 47. Umbrella plate; 48. Connecting plate; 49. Overlap groove; 50. Vertical launch shaft; 51. Oblique launch shaft; 52. First assembly groove; 53. Second assembly groove; 54. Limiting groove; 55. Second accommodating groove; 56. Third accommodating groove; 57. First reset rod; 58. Second reset rod; 59. Reset block; 60. Second spring; 61. Third assembly groove; 62. Fourth assembly groove; 63. Connecting groove; 64. Second cylinder; 65. Clamping block; 66. Third clamping groove; 67. Torsion groove. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-15 This application is described in further detail.

[0047] Example

[0048] The embodiment of the present application discloses a vehicle bottom acupuncture device.

[0049] Reference Figure 1A vehicle underbody acupuncture device includes a plurality of ground rails 1. In this embodiment, the number of ground rails 1 is three, and the three ground rails 1 are arranged in parallel, and the interval between two adjacent ground rails 1 is equal. A reinforcing rod 2 is fixedly connected to the bottom of the ground rail 1, and the reinforcing rod 2 is arranged vertically to the ground rail 1, and the reinforcing rod 2 connects the three ground rails 1.

[0050] Reference Figure 1 , a bottom plate 3 is provided on the ground rail 1, and the bottom plate 3 spans across the three ground rails 1. Three groups of rollers 4 are provided at the bottom of the bottom plate 3, and each group of rollers 4 is located in one ground rail 1. In this embodiment, each group includes two rollers 4, and the rollers 4 of the same group are located on both sides of the bottom plate 3.

[0051] Reference Figure 1 and Figure 2 , a plurality of slide rails 5 are fixedly connected to the bottom plate 3. In this embodiment, there are three slide rails 5. The slide rails 5 are arranged perpendicular to the ground rail 1, and there is a gap between two adjacent slide rails 5. Slide blocks 6 are slidably connected to the slide rails 5. In this embodiment, two slide blocks 6 are arranged on each slide rail 5. A track cover 7 is arranged above each slide rail 5, and both ends of the track cover 7 are fixed to the bottom plate 3 by bolts (not shown in the figure). The track cover 7 is arranged parallel to the slide rail 5, and there is a gap between the track cover 7 and the slide rail 5. The top of the slide block 6 is slidably connected to the bottom of the track cover 7.

[0052] Reference Figure 3 A lead screw 8 is fixedly connected to the bottom plate 3, and the output shaft of the lead screw 8 is arranged parallel to the slide rail 5. A threaded block 9 is threadedly connected to the output shaft of the lead screw 8. Both ends of the lead screw 8 are provided with lifting rings 10, and the lifting rings 10 are fixedly connected to the bottom plate 3. A mounting plate 11 is provided above the slide rail 5, and the mounting plate 11 spans across the three slide rails 5 and the lead screw 8. The sliding block 6 and the threaded block 9 are fixedly connected to the bottom of the mounting plate 11.

[0053] Reference Figure 4 and Figure 5 , two magnetic components are provided on the ground rail 1, one magnetic component is located on the ground rail 1 on one side of the bottom plate 3, and the other magnetic component is located on the ground rail 1 on the other side of the bottom plate 3. The magnetic component includes a top plate 12, a surrounding plate 13, a cover plate 14, a plug bolt 15, a linear bearing 16, a guide column 17, a stud 18, a first electromagnet 19 and a handle 20. The surrounding plate 13 is located above the bottom plate 3, and the surrounding plate 13 is arranged parallel to the bottom plate 3. The stud 18 is fixedly connected to the bottom of the surrounding plate 13, and the stud 18 is threadedly connected to the bottom plate 3. In this embodiment, the number of studs 18 is four.

[0054] Reference Figure 5The top plate 12 is located above the enclosure 13, and the top plate 12 is arranged parallel to the enclosure 13, and there is a gap between the top plate 12 and the enclosure 13. The handle 20 is fixed to one side of the top plate 12 by bolts. The top of the plug bolt 15 is located above the top plate 12, and one end of the plug bolt 15 passes through the top plate 12 and the enclosure 13, and is threadedly connected to the bottom plate 3. The plug bolt 15 is located between the four studs 18, and the plug bolt 15 is slidably connected to the top plate 12. The plug bolt 15 is sleeved with a first spring 21, and the first spring 21 is located between the top plate 12 and the enclosure 13. One end of the first spring 21 is fixedly connected to the bottom of the top plate 12, and the other end of the first spring 21 is fixedly connected to the side wall of the plug bolt 15.

[0055] Reference Figure 5 In this embodiment, there are four linear bearings 16, which are located at the four corners of the enclosure 13. The linear bearings 16 are fixed to the bottom plate 3 by bolts, and the linear bearings 16 penetrate the bottom plate 3. A guide column 17 is slidably connected in each linear bearing 16, and the top of the guide column 17 is fixed to the bottom of the top plate 12 by bolts, and one end of the guide column 17 penetrates the enclosure 13 and the linear bearing 16. The guide column 17 is slidably connected to the enclosure 13.

[0056] Reference Figure 5 The cover plate 14 is located below the bottom plate 3, and the cover plate 14 is arranged parallel to the bottom plate 3. The guide posts 17 are fixedly connected to the four corners of the top of the cover plate 14. The first electromagnet 19 is fixed to the bottom of the cover plate 14 by bolts, and the first electromagnet 19 is located above the ground rail 1. When the first electromagnet 19 is adsorbed on the ground rail 1, the first spring 21 is in a compressed state.

[0057] Reference Figure 3 and Figure 4 , a first cylinder 22 is fixed to the mounting plate 11 by bolts. A shield cover 23 and an electric cylinder cover 24 are provided on the mounting plate 11. The electric cylinder cover 24 is located above the shield cover 23, and the interior of the electric cylinder cover 24 is connected to the interior of the shield cover 23. The electric cylinder cover 24 and the shield cover 23 form a closed space above the mounting plate 11, and the first cylinder 22 is located in the closed space formed by the electric cylinder cover 24 and the shield cover 23. A pressure gauge 25 is provided above the electric cylinder cover 24, and the output shaft of the first cylinder 22 passes through the electric cylinder cover 24 and is fixedly connected to the bottom of the pressure gauge 25. A clamping assembly is fixedly connected to the top of the pressure gauge 25.

[0058] Reference Figure 6 and Figure 7 The clamping assembly includes a connecting seat 26, and the cross section of the connecting seat 26 is circular. A mounting block 27 is provided at the bottom of the connecting seat 26, and the mounting block 27 is a cylinder. The axis of the mounting block 27 coincides with the axis of the connecting seat 26, and the mounting block 27 is integrally formed with the connecting seat 26, and the mounting block 27 is fixedly connected to the pressure gauge 25.

[0059] Reference Figure 7 , a mounting groove 28 is provided on the connection seat 26, the mounting groove 28 opens upward, the cross section of the mounting groove 28 is circular, and the axis of the mounting groove 28 coincides with the axis of the connection seat 26. Two first receiving grooves 29 are provided on the connection seat 26, the first receiving groove 29 is a through groove in the vertical direction, the cross section of the first receiving groove 29 is circular, and there is a gap between the first receiving groove 29 and the mounting groove 28. Two connecting blocks 30 are provided on the side of the connection seat 26 away from the first receiving groove 29, and there is a gap between the two connecting blocks 30. The edge of the connecting block 30 is set in an arc shape, and the curvature of the edge of the connecting block 30 is consistent with the curvature of the edge of the connection seat 26, and the connecting block 30 and the connection seat 26 are integrally formed. A connecting groove 31 is provided on the connection block 30, and the connecting groove 31 is a through groove in the horizontal direction. The connecting grooves 31 on the two connecting blocks 30 are coaxially arranged.

[0060] Reference Figure 8 and Fig. 9 The second electromagnet 32, the first base 33, the connecting tube 34, the second base 35, the protective cover 36, the mounting ring 37 and the chuck 38 are sequentially arranged on the connecting seat 26 from bottom to top. The second electromagnet 32 ​​is located in the mounting groove 28, the bottom of the second electromagnet 32 ​​abuts against the bottom of the mounting groove 28, and the axis of the second electromagnet 32 ​​coincides with the axis of the mounting groove 28. A stop block 39 is arranged on one side of the second electromagnet 32, the stop block 39 is a cylinder, the longitudinal section of the stop block 39 is circular, and the stop block 39 is integrally formed with the second electromagnet 32.

[0061] Reference Fig. 9 and Fig.10 The first base 33 is a cylinder, the first base 33 is coaxially arranged with the second electromagnet 32, the radius of the cross section of the first base 33 is equal to the radius of the cross section of the second electromagnet 32, and the first base 33 conflicts with the top of the second electromagnet 32. A latch 40 is provided at the bottom of the first base 33, the latch 40 is coaxially arranged with the first base 33, the latch 40 and the first base 33 are integrally formed, and the latch 40 passes through the top of the second electromagnet 32.

[0062] Reference Fig. 9 and Fig.10 The connecting tube 34 is a hollow cylinder, and the cross section of the connecting tube 34 is a ring. The connecting tube 34 is coaxially arranged with the first base 33, and the radius of the cross section of the connecting tube 34 is smaller than the radius of the cross section of the first base 33, and the connecting tube 34 and the first base 33 are integrally formed. A first clamping groove 41 is provided on one side of the connecting tube 34, and the longitudinal section of the first clamping groove 41 is a trapezoid, and the groove bottom of the first clamping groove 41 is inclined downward away from the side of the axis of the connecting tube 34, and the first clamping groove 41 is connected with the interior of the connecting tube 34.

[0063] Reference Fig. 9 and Fig.10 The second base 35 is a cylinder, the second base 35 is coaxially arranged with the connecting tube 34, and the radius of the cross section of the second base 35 is greater than the radius of the cross section of the connecting tube 34. A connecting column 42 is provided at the bottom of the second base 35, the connecting column 42 is a cylinder, the connecting column 42 is coaxially arranged with the second base 35, and the connecting column 42 and the second base 35 are integrally formed. The connecting column 42 is inserted into the connecting tube 34, the side wall of the connecting column 42 is in conflict with the inner wall of the connecting tube 34, and the bottom of the connecting column 42 is in conflict with the top of the first base 33.

[0064] Reference Fig.10 A second snap-in groove 43 is provided on one side of the connecting column 42. The longitudinal section of the second snap-in groove 43 is a trapezoid. The bottom of the second snap-in groove 43 is inclined downward on the side away from the axis of the connecting column 42. The second snap-in groove 43 is connected to the first snap-in groove 41. The longitudinal section of the groove formed by the first snap-in groove 41 and the second snap-in groove 43 is a complete trapezoid. A snap-in piece 44 is provided in the second snap-in groove 43. The longitudinal section of the snap-in piece 44 is a trapezoid. The top edge of the snap-in piece 44 coincides with the top of the second snap-in groove 43, the bottom edge of the snap-in piece 44 coincides with the bottom of the second snap-in groove 43, and the side wall edge of the snap-in piece 44 coincides with the side wall of the second snap-in groove 43. The snap-in piece 44 is integrally formed with the connecting column 42.

[0065] Reference Fig. 9 and Fig.10 A connecting platform 45 is provided on the top of the second base 35. The connecting platform 45 is a cylinder. The connecting platform 45 is coaxially arranged with the second base 35. The radius of the cross section of the connecting platform 45 is smaller than the radius of the cross section of the second base 35. The connecting platform 45 and the second base 35 are integrally formed. The mounting ring 37 is sleeved on the connecting platform 45. The mounting ring 37 and the connecting platform 45 are coaxially arranged. The mounting ring 37 and the connecting platform 45 are fixedly connected. The bottom of the mounting ring 37 is in contact with the second base 35. A plug-in block 46 is provided on the top of the connecting platform 45. The plug-in block 46 and the connecting platform 45 are coaxially arranged. The plug-in block 46 and the connecting platform 45 are integrally formed. The plug-in block 46 is plugged into the inside of the chuck 38. The chuck 38 and the plug-in block 46 are coaxially fixedly connected.

[0066] Reference Figure 8 and Fig. 9 The protective cover 36 is umbrella-shaped and includes a plurality of umbrella plates 47 and a connecting plate 48. In this embodiment, eight umbrella plates 47 are provided, and the eight umbrella plates 47 are evenly arranged around the axis of the mounting ring 37. One side of the umbrella plate 47 is fixed to the bottom of the mounting ring 37 by bolts (not shown in the figure), and the other side of the umbrella plate 47 is inclined downward, and the length of the umbrella plate 47 away from the mounting ring 37 is greater than the length of the umbrella plate 47 close to the mounting ring 37.

[0067] Reference Figure 8 and Fig. 9A connecting plate 48 is provided between every two adjacent umbrella plates 47. Therefore, in this embodiment, eight connecting plates 48 are provided. One side of the connecting plate 48 is fixed to the bottom plate of the mounting ring 37 by bolts (not shown in the figure), and the other side of the connecting plate 48 is inclined downward. A lap groove 49 is provided on the connecting plate 48, and the lap groove 49 opens upward. The edges of both sides of the umbrella plate 47 are bent downward, and the downwardly bent edges of the umbrella plate 47 are overlapped in adjacent lap grooves 49.

[0068] Reference Figure 6 and Fig. 9 The connecting seat 26 is provided with a vertical launching well 50 and an oblique launching well 51. The vertical launching well 50 is a semi-cylinder. The vertical launching well 50 is coaxially arranged with the connecting seat 26. The radius of the vertical launching well 50 is equal to the radius of the connecting seat 26. The bottom of the vertical launching well 50 conflicts with the connecting seat 26. The oblique launching well 51 is a semi-cylinder. The oblique launching well 51 is coaxially arranged with the connecting seat 26. The oblique launching well 51 is coaxially arranged with the connecting seat 26. The radius of the oblique launching well 51 is equal to the radius of the connecting seat 26. The bottom of the oblique launching well 51 conflicts with the connecting seat 26. The side wall of the vertical launching well 50 conflicts with the side wall of the oblique launching well 51. The vertical launching well 50 and the oblique launching well 51 are combined to form a cylinder.

[0069] Reference Fig. 9 A first assembly groove 52 is provided on the vertical launch shaft 50. The first assembly groove 52 is a through groove in the vertical direction. The cross section of the first assembly groove 52 is semicircular. The first assembly groove 52 is coaxially arranged with the vertical launch shaft 50. A second assembly groove 53 is provided at the bottom of the vertical launch shaft 50. The second assembly groove 53 opens downward. The cross section of the second assembly groove 53 is semicircular. The second assembly groove 53 is coaxially arranged with the vertical launch shaft 50. The second assembly groove 53 is connected with the first assembly groove 52. The radius of the cross section of the second assembly groove 53 is greater than the radius of the cross section of the first assembly groove 52. A limiting groove 54 is provided on the side wall of the vertical launch shaft 50. The limiting groove 54 is a through groove in the horizontal direction. The limiting groove 54 is connected with the second assembly groove 53.

[0070] Reference Fig.11 and Fig.12The bottom of the vertical launch shaft 50 is provided with two second receiving grooves 55, the second receiving grooves 55 open downward, the second receiving grooves 55 are cylindrical, the positions of the two second receiving grooves 55 correspond to the first receiving groove 29, the second receiving grooves 55 are connected to the first receiving groove 29, the axis of the second receiving groove 55 coincides with the axis of the first receiving groove 29, and the radius of the cross section of the second receiving groove 55 is greater than the radius of the cross section of the first receiving groove 29. The vertical launch shaft 50 is provided with two third receiving grooves 56, the third receiving grooves 56 open upward, the third receiving grooves 56 are cylindrical, the positions of the two third receiving grooves 56 correspond to the second receiving grooves 55, the third receiving grooves 56 are connected to the second receiving groove 55, and a through groove in the vertical direction is formed. The axis of the third receiving groove 56 coincides with the axis of the second receiving groove 55, and the radius of the cross section of the third receiving groove 56 is greater than the radius of the cross section of the second receiving groove 55.

[0071] Reference Fig.12 , a first reset rod 57 is inserted into each first receiving groove 29, the first reset rod 57 is coaxially arranged with the first receiving groove 29, and the first reset rod 57 is fixedly connected with the connecting seat 26. A second reset rod 58 is coaxially arranged on the top of the first reset rod 57, and the second reset rod 58 is integrally formed with the first reset rod 57. The second reset rod 58 is located in the through groove formed by the second receiving groove 55 and the third receiving groove 56, and the radius of the second reset rod 58 is greater than the radius of the cross section of the first receiving groove 29. A reset block 59 is coaxially arranged on the top of the second reset rod 58, and the reset block 59 is integrally formed with the second reset rod 58. The reset block 59 is located in the third receiving groove 56, and the radius of the reset block 59 is greater than the radius of the second reset rod 58.

[0072] Reference Fig.12 , a second spring 60 is sleeved on the second reset rod 58, and the second spring 60 is located in the third receiving groove 56. One end of the second spring 60 is fixedly connected to the bottom of the reset block 59, and the other end of the second spring 60 is fixedly connected to the bottom of the third receiving groove 56. When the bottom of the vertical launch shaft 50 completely contacts the top of the connecting seat 26, the second spring 60 is in a natural state.

[0073] Reference Fig.12 and Fig.13 The oblique launch well 51 is provided with a third assembly groove 61, which is a through groove in the vertical direction, and has a semicircular cross section. The third assembly groove 61 is coaxially arranged with the oblique launch well 51. The third assembly groove 61 is connected with the first assembly groove 52 to form a complete cylindrical groove, and the connecting tube 34 is located in the through groove formed by the first assembly groove 52 and the third assembly groove 61. The side wall of the connecting tube 34 conflicts with the side wall of the first assembly groove 52, and the side wall of the connecting tube 34 conflicts with the side wall of the third assembly groove 61.

[0074] Reference Fig. 9 and Fig.13 A fourth assembly groove 62 is provided at the bottom of the oblique launch well 51. The fourth assembly groove 62 opens downward. The cross section of the fourth assembly groove 62 is semicircular. The fourth assembly groove 62 is coaxially arranged with the oblique launch well 51. The fourth assembly groove 62 is connected with the third assembly groove 61. The radius of the cross section of the fourth assembly groove 62 is greater than the radius of the cross section of the third assembly groove 61. The fourth assembly groove 62 is connected with the second assembly groove 53 to form a complete cylindrical groove. The first base 33 is located in the through groove formed by the second assembly groove 53 and the fourth assembly groove 62. The side wall of the first base 33 conflicts with the side wall of the second assembly groove 53, and the side wall of the first base 33 conflicts with the side wall of the fourth assembly groove 62.

[0075] Reference Fig. 9 The second electromagnet 32 ​​is located in the through groove formed by the second assembly groove 53 and the fourth assembly groove 62, the side wall of the second electromagnet 32 ​​abuts against the side wall of the second assembly groove 53, and the side wall of the second electromagnet 32 ​​abuts against the side wall of the fourth assembly groove 62. The limit block 39 is located in the limit groove 54, and there is a gap between the limit block 39 and the side wall of the limit groove 54.

[0076] Reference Fig.14 and Fig.15 The side wall of the oblique launch well 51 is provided with a connecting groove 63, which is a through groove in the horizontal direction and is connected to the third assembly groove 61. The side wall of the oblique launch well 51 is provided with a second cylinder 64, which is fixed to the oblique launch well 51 by bolts (not shown in the figure), and the second cylinder 64 covers the notch of the connecting groove 63, and the output shaft of the second cylinder 64 is located in the connecting groove 63.

[0077] Reference Fig. 9 and Fig.10 A clamping block 65 is fixedly connected to the output shaft of the second cylinder 64, and the contour of the clamping block 65 matches the shape of the first clamping groove 41, and the contour of the clamping block 65 matches the shape of the second clamping groove 43. When the output shaft of the second cylinder 64 pushes the clamping block 65 into the first clamping groove 41, the side wall of the clamping block 65 contacts the side wall of the first clamping groove 41, the top of the clamping block 65 fits the top of the first clamping groove 41, and the bottom of the clamping block 65 fits the bottom of the first clamping groove 41. The side wall of the clamping block 65 contacts the side wall of the second clamping groove 43, the top of the clamping block 65 fits the top of the second clamping groove 43, and the bottom of the clamping block 65 fits the bottom of the second clamping groove 43. The clamping block 65 is provided with a third clamping slot 66 , which is a through slot in the vertical direction. When the clamping block 65 is inserted into the first clamping slot 41 , the clamping piece 44 is inserted into the third clamping slot 66 .

[0078] Reference Fig.14 and Fig.15The bottom of the oblique launch well 51 is provided with two torsion grooves 67, which open downwards, and the positions of the torsion grooves 67 correspond to the connection blocks 30 one by one, and the connection blocks 30 are located in the torsion grooves 67. The connection blocks 30 are connected to the torsion grooves 67 by torsion springs (not shown in the figure), and when the bottom of the oblique launch well 51 is completely in contact with the connection seat 26, the torsion springs are in a natural state.

[0079] The implementation principle of a vehicle bottom puncture device in an embodiment of the present application is as follows: when performing a bottom puncture test on a new energy vehicle battery pack, the bottom plate 3 is dragged manually or mechanically to determine the position of the bottom plate 3 on the ground rail 1, and then the top plate 12 is pressed down by the handle 20 to make the first electromagnet 19 contact with the ground rail 1, so that the first electromagnet 19 is energized, thereby locking the position of the bottom plate 3.

[0080] Start the lead screw 8, and the output shaft of the lead screw 8 drives the threaded block 9 to move, thereby driving the mounting plate 11 to move on the slide rail 5. After determining the position of the mounting plate 11, use the chuck 38 to clamp the steel needle, energize the second electromagnet 32 ​​to fix the positions of the vertical launch well 50 and the oblique launch well 51, start the second cylinder 64, push the clamping block 65 into the first clamping groove 41, and insert the clamping piece 44 into the third clamping groove 66. Start the first cylinder 22 to raise the clamping assembly and insert the steel needle into the battery pack.

[0081] If the steel needle needs to be pulled out, the first cylinder 22 is activated to lower the clamping assembly. If the steel needle needs to be left in the battery pack, the second cylinder 64 is activated to separate the clamping block 65 from the connecting tube 34, and then the clamping assembly is lowered, so that the clamp 38, the protective cover 36, the second base 35, the connecting column 42 and the steel needle are left under the battery pack.

[0082] When the steel needle is too long, an escape state can be adopted. After pulling out the needle, the first electromagnet 19 and the second electromagnet 32 ​​are powered off. In the process of pulling the bottom plate 3, the steel needle encounters an obstacle, and the oblique launch well 51 flips over a certain angle to avoid danger. The vertical launch well 50 rises under the lifting of the limit block 39. After the escape is completed, the oblique launch well 51 is reset under the action of the tension spring, and the vertical launch well 50 is reset under the action of the second spring 60.

[0083] After the needle puncture test is completed, the first cylinder 22 is started to lower the clamping assembly, the first electromagnet 19 is turned off, and the bottom plate 3 is pulled to the required position by manpower or machinery.

[0084] The undercar acupuncture device provided in the embodiment of the present application enables the steel needle to have higher positioning accuracy and faster response capability through the cooperation of the ground rail 1 and the slide rail 5, thereby improving the defect that the common acupuncture machine has difficulty in taking both flexibility and test efficiency into consideration.

[0085] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vehicle bottom acupuncture device, characterized in that: The invention comprises a bottom plate (3) and a ground rail (1), wherein a roller (4) is provided at the bottom of the bottom plate (3), wherein the roller (4) is located inside the ground rail (1), wherein a slide rail (5) is provided on the bottom plate (3), wherein the slide rail (5) is vertically arranged with the ground rail (1), wherein a mounting plate (11) is slidably connected to the slide rail (5), wherein a clamping assembly and a first cylinder (22) for driving the clamping assembly are provided on the mounting plate (11), wherein a plugging bolt (15) is threadedly connected to the bottom plate (3), wherein a first spring (21) is sleeved on the plugging bolt (15), and wherein a top plate (22) is slidably connected to the plugging bolt (15). 12), one end of the first spring (21) is connected to the top plate (12), the other end of the first spring (21) is connected to the plug bolt (15), a first electromagnet (19) is provided between the bottom plate (3) and the ground rail (1), a guide column (17) is connected to the first electromagnet (19), one end of the guide column (17) passes through the bottom plate (3) and is connected to the top plate (12), the clamping assembly comprises a connecting seat (26), a second electromagnet (32), a vertical launch well (50) and an inclined launch well (51) are provided on the connecting seat (26), the vertical launch well (50) and the inclined launch well (51) are connected to each other The second electromagnet (32) is located between the vertical launch well (50) and the inclined launch well (51), the side wall of the second electromagnet (32) is in contact with the inner wall of the vertical launch well (50), the inclined launch well (51) is in contact with the second electromagnet (32), a connecting tube (34) is provided on the second electromagnet (32), a first clamping groove (41) is provided on one side of the connecting tube (34), a connecting column (42) is inserted in the connecting tube (34), a second clamping groove (43) is provided on one side of the connecting column (42), the first clamping groove (41) and the second clamping groove (43) are connected to each other. The second clamping groove (43) is provided with a clamping piece (44), a second cylinder (64) is provided on one side of the inclined launch well (51), an output shaft of the second cylinder (64) passes through the inclined launch well (51), a clamping block (65) is connected to the output shaft of the second cylinder (64), the clamping block (65) is inserted into the first clamping groove (41), a third clamping groove (66) is provided on the clamping block (65), the clamping piece (44) is inserted into the third clamping groove (66), and a chuck (38) is connected to the connecting column (42), and the chuck (38) is used to clamp the steel needle.

2. A vehicle bottom acupuncture device according to claim 1, characterized in that: A panel (13) is provided between the top plate (12) and the bottom plate (3), the driving bolts (15) penetrate the panel (13), the panel (13) is fixed to the bottom plate (3) by means of studs (18), and the guide column (17) penetrates the panel (13) and is slidably connected to the panel (13).

3. A vehicle bottom acupuncture device according to claim 2, characterized in that: Four guide columns (17) are provided, and the guide columns (17) are located at the four corners of the top plate (12). A linear bearing (16) is connected to the bottom plate (3), and the guide columns (17) are slidably connected in the linear bearing (16).

4. A vehicle bottom acupuncture device according to claim 1, characterized in that: A lead screw (8) is provided on the base plate (3), the output shaft of the lead screw (8) is arranged parallel to the slide rail (5), a threaded block (9) is threadedly connected to the output shaft of the lead screw (8), and the threaded block (9) is fixed on the mounting plate (11).

5. The vehicle bottom acupuncture device according to claim 1, characterized in that: The slide rail (5) is slidably connected to a slide block (6), the slide block (6) is fixed to a mounting plate (11), the bottom plate (3) is connected to a track cover (7), the track cover (7) is located above the slide rail (5), and the slide block (6) is slidably connected to the track cover (7).

6. The vehicle bottom acupuncture device according to claim 1, characterized in that: An electric cylinder cover (24) is provided on the mounting plate (11), and the electric cylinder cover (24) covers the first cylinder (22), and the output shaft of the first cylinder (22) passes through the electric cylinder cover (24).

7. The vehicle bottom acupuncture device according to claim 1, characterized in that: A limiting groove (54) is provided on the vertical launch shaft (50), a limiting block (39) is fixed on one side of the second electromagnet (32), and the limiting block (39) is located in the limiting groove (54).

8. The vehicle bottom acupuncture device according to claim 7, characterized in that: A connecting block (30) is provided on the connecting seat (26), and the connecting block (30) is connected to the inclined launch well (51) via a torsion spring. When the bottom of the inclined launch well (51) is in full contact with the connecting seat (26), the torsion spring is in a natural state.

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