Airtightness detection device for new energy battery shell

Abstract

The invention relates to the technical field of new energy battery shell airtightness detection, in particular to a new energy battery shell airtightness detection device which comprises an operation table base, and top frame plates are fixedly welded to the upper portions of the left end and the right end of the top face of the operation table base through supporting columns. Spring telescopic rods are movably arranged at the front and rear ends of the bottom faces of the ends, close to each other, of the two top frame plates, a hanging plate is movably arranged above the center of the top face of the operation table base, the bottoms of the four spring telescopic rods are movably connected with the four corners of the top face of the hanging plate correspondingly, and a circular truncated cone groove is formed in the center of the top face of the hanging plate. And a rotary circular truncated cone is rotationally arranged in the center in the circular truncated cone groove. According to the airtightness detection device for the new energy battery shell, the airtightness is detected through the differential pressure value of the two vacuum containers, the device has the function of simulating the conditions of vehicle bumping and indirect impact of the battery shell in the process, the airtightness of the battery shell can be continuously detected under two common conditions, and the airtightness detection device is more rigorous and accurate and higher in functionality.

Description

Technical Field

[0001] The present invention relates to the technical field of airtight detection for the outer shell of new energy batteries, and specifically provides an airtight detection device for the outer shell of new energy batteries. Background Art

[0002] For new energy batteries, such as lithium-ion batteries used in electric vehicles, the airtightness of the outer shell is very important, which is directly related to driving safety and performance. Problems with airtightness will directly lead to easy damage of the internal battery and leakage of battery liquid after damage, which is very dangerous. Therefore, the airtightness detection of new energy batteries is an extremely important quality inspection process.

[0003] Currently, the main detection methods include the pressure drop method, helium mass spectrometry leak detection method, water immersion method, flow method, differential pressure method, etc. However, the common point is that the battery outer shell is fixed during the detection process and no external interference is applied to it. However, during the actual handling and even operation of the battery, it will inevitably encounter a large number of jolts and bump impacts. The airtightness detected without simulating these situations is not rigorous enough and the accuracy is insufficient. It is unknown whether the battery outer shell can continuously maintain a certain airtightness in the face of these unexpected situations.

[0004] In order to solve the above problems, we have made improvements and proposed an airtight detection device for the outer shell of new energy batteries. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides an airtight detection device for the outer shell of new energy batteries, including an operation table base. Above the left and right ends of the top surface of the operation table base, top frame plates are fixedly welded through support columns. At the front and rear ends of the bottom surface of the mutually approaching ends of the two top frame plates, spring telescopic rods are movably arranged. Above the center of the top surface of the operation table base, a suspension plate is movably arranged. The bottom parts of the four spring telescopic rods are respectively movably connected to the four corner positions of the top surface of the suspension plate. A circular truncated cone groove is opened at the center of the top surface of the suspension plate, and a rotating circular truncated cone is rotatably arranged at the center of the circular truncated cone groove.

[0007] At the center of the front end of the bottom surface of the suspension plate, a circular truncated cone fixing device is installed. At equal intervals along the edge of the bottom surface of the rotating circular truncated cone, a set of positioning pin holes is opened. At the middle part of the front end of the bottom surface of the circular truncated cone groove, a set of limit pin holes is penetrated and opened. At the center of the top surface of the rotating circular truncated cone, a first vacuum detection box is installed. On the left end of the top surface of the operation table base, a support platform is fixedly welded, and a second vacuum detection box is fixedly arranged on the top surface of the support platform. A differential pressure sensor is connected in series between the second vacuum detection box and the first vacuum detection box.

[0008] Two jolting simulation rollers are movably arranged below the suspension plate. A AC motor is fixedly installed in the middle of the top end of the front inner wall of the operating table base through bolts. The rotating shaft of the AC motor is in transmission connection with the two jolting simulation rollers. A transmission pressure rod is rotatably arranged above the right front end of the outside of the operating table base. The transmission pressure rod is in transmission connection with the rotating shaft of the AC motor. A knocking rod is rotatably arranged between the two top frame plates.

[0009] As a preferred technical solution of the present invention, first hinge seats are fixedly arranged at the front and rear ends of the bottom surface of the mutually approaching ends of the two top frame plates and at the four corner positions of the top surface of the suspension plate. The top and bottom ends of each spring telescopic rod are respectively rotationally connected to the top frame plate and the suspension plate through the first hinge seats.

[0010] As a preferred technical solution of the present invention, a bearing is fixedly installed at the center of the bottom surface of the frustum groove. The bottom surface of the outer ring of the bearing is fixedly connected to the bottom surface of the frustum groove. The center of the bottom surface of the rotating frustum is fixedly connected to the top surface of the inner ring of the bearing. The limit pin hole group is composed of two limit pin holes. Each positioning pin hole group is composed of two positioning pin holes. The inner diameters of the limit pin holes and the positioning pin holes are the same, and the limit pin hole group can be aligned with each positioning pin hole group.

[0011] As a preferred technical solution of the present invention, the frustum fixing device includes a second hinge seat. The top of the second hinge seat is fixedly connected to the middle of the front end of the bottom surface of the suspension plate. Two flap side plates are rotatably installed inside the bottom end of the second hinge seat. A connecting plate is fixedly welded at the front end between the two flap side plates. A torsion spring is arranged at the top end inside the second hinge seat. The bottom and top of the torsion spring are respectively fixedly connected to the connecting plate and the suspension plate.

[0012] As a preferred technical solution of the present invention, limiting sliding grooves are respectively formed through the rear ends of the two flap side plates. A linkage rod is further arranged at the rear end of the flap side plate. The linkage rod passes through the two limiting sliding grooves, and limiting pins are fixedly welded at both the left and right ends thereof. The outer diameter dimensions of the two limiting pins are equal to the inner diameters of the limit pin hole group and each positioning pin hole group. The length of the limiting pin is greater than the length of the limit pin hole group, and the two limiting pins are slidably connected inside the limit pin hole group.

[0013] As a preferred technical solution of the present invention, a simulation component through hole is formed at the center of the top surface of the operating table base. A rotating shaft is rotatably installed at the center of the top end of the inner wall of the operating table base. The rotating shaft is located below the simulation component through hole. Linkage side plates are fixedly welded at the front and rear ends of the rotating shaft. The two linkage side plates are respectively located at the front and rear ends inside the simulation component through hole. The two jolting simulation rollers are respectively rotationally connected to the opposite surfaces between the two ends of the two linkage side plates. The center distances between the two jolting simulation rollers and the center of the rotating shaft are not equal.

[0014] As a preferred technical solution of the present invention, a bevel gear is coaxially and fixedly arranged at the front end of the rotating shaft, and a bevel gear is also coaxially and fixedly arranged at the top end of the rotating shaft of the AC motor. The two bevel gears are meshed with each other. A first transmission chamber is fixedly welded at the upper right end of the front surface of the operating table base, and a second transmission chamber is fixedly welded at the right end of the top surface of the first transmission chamber. A transmission pressure rod is rotatably arranged at the top of the front surface of the second transmission chamber.

[0015] As a preferred technical solution of the present invention, a first sprocket is rotatably installed at the left end inside the first transmission chamber, and a second sprocket and a third sprocket are rotatably arranged at the right end inside the first transmission chamber. The second sprocket and the third sprocket are coaxially and fixedly connected. The first sprocket is coaxially and fixedly connected with the rotating shaft. The first sprocket and the second sprocket are connected by a chain drive. A fourth sprocket is rotatably arranged at the top end inside the second transmission chamber. The fourth sprocket and the third sprocket are connected by a chain drive. The rotating center shaft end of the transmission pressure rod is coaxially and fixedly connected with the fourth sprocket.

[0016] As a preferred technical solution of the present invention, a distance adjusting handle is arranged at the other end of the transmission pressure rod. A threaded rod is coaxially welded at the connecting end of the distance adjusting handle. An internal threaded hole is formed on the surface of the other end of the transmission pressure rod. The distance adjusting handle is detachably connected with the transmission pressure rod through the threaded rod and the internal threaded hole. A transmission shaft rod is fixedly welded at the top of the knocking rod. The two ends of the transmission shaft rod are respectively rotatably connected to the middle parts between two top support plates. A transmission lever is fixedly welded at the right end of the front surface of the transmission shaft rod. A rubber knocking hammer is fixedly arranged at the bottom end of the knocking rod. A limiting square groove is formed at the center of the top surface of the rotating turntable. Connecting springs are fixedly arranged at equal intervals on the inner wall of the limiting square groove. The outer bottom end of the first vacuum detection box is fixedly connected with each connecting spring.

[0017] As a preferred technical solution of the present invention, a sealing cover is detachably arranged at the top of the first vacuum detection box. A first electric control vacuum ball valve is fixedly installed at the middle part of the top surface of the sealing cover. A second electric control vacuum ball valve is fixedly installed on the front surface of the outside of the first vacuum detection box. A battery case docking hose is fixedly arranged on the front inner wall of the first vacuum detection box. The battery case docking hose is communicated with the second electric control vacuum ball valve. A third electric control vacuum ball valve is fixedly and communicatively installed at the top surface of the second vacuum detection box. Flange pipes are fixedly arranged on the left side of the first vacuum detection box and the right side of the second vacuum detection box. The two ends of the differential pressure sensor are respectively fixedly communicated with the flange pipes of the first vacuum detection box and the second vacuum detection box through flanges.

[0018] The beneficial effects of the present invention are as follows: A hermeticity detection device for the outer shell of a new energy battery detects the airtightness through the differential pressure value of two vacuum containers. During the process, the device has the function of simulating vehicle bumps and indirect impacts on the battery outer shell, and can continue to detect the airtightness of the battery outer shell under two common conditions, rather than only detecting the airtightness when there is no external interference on the battery outer shell, which is more rigorous, accurate, and has stronger functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is an axonometric view of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0021] Figure 2 is a front structural schematic diagram of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0022] Figure 3 is a back structural schematic diagram of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0023] Figure 4 is a left structural schematic diagram of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0024] Figure 5 is a partial structural schematic diagram of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0025] Figure 6 is a driving transmission structural schematic diagram of a jolting simulation roller and a driving pressure rod of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0026] Figure 7 is a partial structural schematic diagram of a suspension plate of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0027] Figure 8 is a structural schematic diagram of a frustum fixing device of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0028] Figure 9 is a partial structural schematic diagram of a rotating frustum of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0029] Figure 10 is a sectional structural schematic diagram of a rotating frustum and a first vacuum detection box of a hermeticity detection device for the outer shell of a new energy battery according to the present invention;

[0030] In the figure: 1, operating table base; 101, first transmission bin; 102, second transmission bin; 2, simulation component through port; 3, top frame plate; 4, spring telescopic rod; 5, first hinge base; 6, suspension plate; 7, frustum groove; 8, bearing; 9, rotating frustum; 10, limit pin hole group; 11, frustum fixing device; 12, second hinge base; 13, paddle side plate; 14, connecting plate; 15, torsion spring; 16, limit sliding groove; 17, linkage rod; 18, limit pin; 19, positioning pin hole group; 20, AC motor; 21, rotating shaft; 22, linkage side plate; 23, jolting simulation roller; 24, first sprocket; 25, second sprocket; 26, third sprocket; 27, fourth sprocket; 28, transmission pressure rod; 29, distance adjusting handle; 30, transmission shaft rod; 31, transmission rocker; 32, knocking rod; 33, limit square groove; 34, connecting spring; 35, first vacuum detection box; 36, sealing cover; 37, first electric control vacuum ball valve; 38, second electric control vacuum ball valve; 39, battery case docking hose; 40, second vacuum detection box; 41, third electric control vacuum ball valve; 42, differential pressure sensor. Detailed implementation manners

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] Embodiment: As Figures 1 - 10 shown, a device for airtight detection of the outer shell of a new energy battery includes an operating table base 1. Top frame plates 3 are fixedly welded above the left and right ends of the top surface of the operating table base 1 through support columns. The front and rear ends of the bottom surfaces of the two mutually approaching ends of the two top frame plates 3 are movably provided with spring telescopic rods 4. Above the center of the top surface of the operating table base 1, a suspension plate 6 is movably provided. The bottom parts of the four spring telescopic rods 4 are respectively movably connected to the four corner positions of the top surface of the suspension plate 6. A frustum groove 7 is opened at the center of the top surface of the suspension plate 6, and a rotating frustum 9 is rotatably provided at the center of the frustum groove 7.

[0033] A frustum fixing device 11 is installed at the center of the front end of the bottom surface of the suspension plate 6. Positioning pin hole groups 19 are equidistantly opened at the edge of the bottom surface of the rotating frustum 9. A limit pin hole group 10 is penetrated and opened at the edge of the middle part of the front end of the bottom surface of the frustum groove 7. A first vacuum detection box 35 is installed at the center of the top surface of the rotating frustum 9. A support platform is fixedly welded at the left end of the top surface of the operating table base 1, and a second vacuum detection box 40 is fixedly provided on the top surface of the support platform. A differential pressure sensor 42 is connected in series between the second vacuum detection box 40 and the first vacuum detection box 35.

[0034] Below the suspension plate 6, two jolting simulation rollers 23 are movably arranged. In the middle of the top end of the front inner wall of the operating table base 1, an AC motor 20 is fixedly installed by bolts. The rotating shaft of the AC motor 20 is in transmission connection with the two jolting simulation rollers 23. Above the right front end of the outside of the operating table base 1, a transmission pressure rod 28 is rotatably arranged. The transmission pressure rod 28 is in transmission connection with the rotating shaft of the AC motor 20. Between the two top support plates 3, a knocking rod 32 is rotatably arranged.

[0035] At the front and rear ends of the bottom surface of the mutually approaching ends of the two top support plates 3 and at the four corner positions of the top surface of the suspension plate 6, first hinge seats 5 are fixedly arranged. The top and bottom ends of each spring telescopic rod 4 are respectively rotationally connected to the top support plate 3 and the suspension plate 6 through the first hinge seats 5.

[0036] At the center of the bottom surface of the frustum groove 7, a bearing 8 is fixedly installed. The bottom surface of the outer ring of the bearing 8 is fixedly connected to the bottom surface of the frustum groove 7. The center of the bottom surface of the rotating frustum 9 is fixedly connected to the top surface of the inner ring of the bearing 8. The limit pin hole group 10 consists of two limit pin holes. Each positioning pin hole group 19 consists of two positioning pin holes. The inner diameters of the limit pin holes and the positioning pin holes are the same, and the limit pin hole group 10 can be aligned with each positioning pin hole group 19.

[0037] The frustum fixing device 11 includes a second hinge seat 12. The top of the second hinge seat 12 is fixedly connected to the middle of the front end of the bottom surface of the suspension plate 6. Inside the bottom end of the second hinge seat 12, two flap side plates 13 are rotatably installed. At the front end between the two flap side plates 13, a connecting plate 14 is fixedly welded. At the top end inside the second hinge seat 12, a torsion spring 15 is arranged. The bottom and top of the torsion spring 15 are respectively fixedly connected to the connecting plate 14 and the suspension plate 6.

[0038] At the rear ends of the two flap side plates 13, limiting sliding grooves 16 are respectively formed through. At the rear end of the flap side plate 13, a linkage rod 17 is further arranged. The linkage rod 17 passes through the two limiting sliding grooves 16, and limiting pins 18 are fixedly welded at both its left and right ends. The outer diameter sizes of the two limiting pins 18 are equal to the inner diameters of the limit pin hole group 10 and each positioning pin hole group 19. The length of the limiting pin 18 is greater than the length of the limit pin hole group 10, and the two limiting pins 18 are slidably connected to the inside of the limit pin hole group 10.

[0039] At the center of the top surface of the operating table base 1, a simulation component through hole 2 is formed. At the center of the top end of the inner wall of the operating table base 1, a rotating shaft 21 is rotatably installed. The rotating shaft 21 is located below the simulation component through hole 2. At the front and rear ends of the rotating shaft 21, linkage side plates 22 are fixedly welded. The two linkage side plates 22 are respectively located at the front and rear ends inside the simulation component through hole 2. The two jolting simulation rollers 23 are respectively rotationally connected to the opposite surfaces between the two ends of the two linkage side plates 22. The center distances between the two jolting simulation rollers 23 and the center of the rotating shaft 21 are not equal.

[0040] A bevel gear is coaxially and fixedly arranged at the front end of the rotating shaft 21, and a bevel gear is also coaxially and fixedly arranged at the top end of the rotating shaft of the AC motor 20. The two bevel gears are meshed with each other. A first transmission chamber 101 is fixedly welded at the upper right end of the front surface of the operating table base 1. A second transmission chamber 102 is fixedly welded at the right end of the top surface of the first transmission chamber 101. A transmission pressure rod 28 is rotatably arranged at the top of the front surface of the second transmission chamber 102.

[0041] A first sprocket 24 is rotatably installed at the left end inside the first transmission chamber 101. A second sprocket 25 and a third sprocket 26 are rotatably arranged at the right end inside the first transmission chamber 101. The second sprocket 25 and the third sprocket 26 are coaxially and fixedly connected. The first sprocket 24 is coaxially and fixedly connected with the rotating shaft 21. The first sprocket 24 is connected with the second sprocket 25 through a chain drive. A fourth sprocket 27 is rotatably arranged at the top inside the second transmission chamber 102. The fourth sprocket 27 is connected with the third sprocket 26 through a chain drive. The rotating center shaft end of the transmission pressure rod 28 is coaxially and fixedly connected with the fourth sprocket 27.

[0042] The other end of the transmission pressure rod 28 is provided with an adjusting handle 29. A threaded rod is coaxially welded at the connecting end of the adjusting handle 29. An internal threaded hole is formed on the surface of the other end of the transmission pressure rod 28. The adjusting handle 29 is detachably connected with the transmission pressure rod 28 through the threaded rod and the internal threaded hole. A transmission shaft rod 30 is fixedly welded at the top of the knocking rod 32. The two ends of the transmission shaft rod 30 are respectively rotatably connected to the middle parts between the two top support plates 3. A transmission lever 31 is fixedly welded at the right end of the front surface of the transmission shaft rod 30. A rubber knocking hammer is fixedly arranged at the bottom end of the knocking rod 32. A limiting square groove 33 is formed at the center of the top surface of the rotating turntable 9. Connecting springs 34 are fixedly arranged at equal intervals on the inner wall of the limiting square groove 33. The outer bottom end of the first vacuum detection box 35 is fixedly connected with each connecting spring 34.

[0043] A sealing cover 36 is detachably arranged at the top of the first vacuum detection box 35. A first electric control vacuum ball valve 37 is fixedly installed at the middle part of the top surface of the sealing cover 36. A second electric control vacuum ball valve 38 is fixedly installed on the front surface of the outside of the first vacuum detection box 35. A battery case docking hose 39 is fixedly arranged on the front surface of the inner wall of the first vacuum detection box 35. The battery case docking hose 39 is communicated with the second electric control vacuum ball valve 38. A third electric control vacuum ball valve 41 is fixedly and communicatively installed at the top of the second vacuum detection box 40. Flange pipes are fixedly arranged on the left side of the first vacuum detection box 35 and the right side of the second vacuum detection box 40. The two ends of the differential pressure sensor 42 are respectively fixedly communicated with the flange pipes of the first vacuum detection box 35 and the second vacuum detection box 40 through flanges.

[0044] The inner wall of the first vacuum detection box 35 is provided with a clamping block for fixing the battery case. The internal width dimension of the first vacuum detection box 35 should match the battery case to prevent it from moving back and forth during testing.

[0045] Working principle: Place the battery case into the interior of the first vacuum detection box 35. Connect the battery case docking hose 39 to the vent for testing on the battery case. Then, close the sealing cover 36 to complete the sealing of the first vacuum detection box 35. Next, connect an external vacuum pump to the first electronically controlled vacuum ball valve 37 and the third electronically controlled vacuum ball valve 41 in sequence through pipelines and evacuate the air in sequence. During this process, the second electronically controlled vacuum ball valve 38 remains closed. During the process, the evacuation rates of the first vacuum detection box 35 and the second vacuum detection box 40 can be observed. If the evacuation rate of the first vacuum detection box 35 is too slow at the same power, it is considered that there is an air leakage in the battery case;

[0046] If the evacuation rates are the same, after the evacuation is completed, close the first electronically controlled vacuum ball valve 37 and the third electronically controlled vacuum ball valve 41, confirm the differential pressure value on both sides of the differential pressure sensor 42, connect the air inflation pump to the second electronically controlled vacuum ball valve 38 and start inflating the interior of the battery case. At this time, observe whether the differential pressure value of the differential pressure sensor 42 changes. Once it changes, it proves that the airtightness of the battery case is insufficient;

[0047] If the value remains unchanged, at this time, start the AC motor 20 to drive the rotating shaft 21 to drive the two jolting simulation rollers 23 to rotate in a circle with the rotating shaft 21 as the center. The two jolting simulation rollers 23 alternately contact the bottom surface of the suspension plate 6 and push it upward. The four spring telescopic rods 4 will, with the cooperation of the first hinge seat 5, make the first vacuum detection box 35 achieve a certain frequency of jolting effect, simulating the bumpy road conditions during driving. At this time, continue to observe whether the differential pressure value of the differential pressure sensor 42 changes;

[0048] If the value remains unchanged, the AC motor 20 is paused, the distance adjustment handle 29 is installed on the transmission pressure rod 28, and the AC motor 20 is started again. The rotating shaft 21 drives the first sprocket 24 to rotate. The first sprocket 24, with the assistance of the chain, drives the second sprocket 25, the third sprocket 26, and the fourth sprocket 27 to rotate in sequence. The rotation of the fourth sprocket 27 drives the transmission pressure rod 28 to rotate, and the transmission pressure rod 28 intermittently contacts and presses down the front end of the transmission tilting rod 31. As the transmission pressure rod 28 continues to rotate, it will be separated from the transmission tilting rod 31. As the transmission tilting rod 31 rotates up and down, the rubber knocking hammer of the knocking rod 32 will first rise and then fall, and knock on the outside of the first vacuum detection box 35. It can be selected according to the situation. The adjustable handle 29 of different lengths can change the lifting height of the rubber knocking hammer of the knocking rod 32, and then adjust the knocking force. During the process, pinching the connecting plate 14 of the table fixing device 11 upwards can make the limit pin 18 drop and pull out the positioning pin hole group 19. At this time, the rotating table 9 can be rotated to change the knocking position. After loosening the table fixing device 11, under the action of the torsion spring 15, the limit pin 18 will press against the bottom surface of the rotating table 9. At this time, continue to rotate until the other group of positioning pin hole groups 19 are aligned, and the limit pin 18 will be reinserted to fix the rotating table 9. During the process, observe whether the pressure difference value of the differential pressure sensor 42 changes, simulating the situation where the battery shell is subjected to indirect knock and collision.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An airtight detection device for the housing of a new energy battery, including an operation table base (1), characterized in that, Above the left and right ends of the top surface of the operating table base (1), top frame plates (3) are fixedly welded through support columns. At the front and rear ends of the bottom surface of the mutually approaching ends of the two top frame plates (3), spring telescopic rods (4) are movably arranged. Above the center of the top surface of the operating table base (1), a suspension plate (6) is movably arranged. The bottom parts of the four spring telescopic rods (4) are respectively movably connected to the four corner positions of the top surface of the suspension plate (6). A conical groove (7) is formed at the center of the top surface of the suspension plate (6). At the center of the conical groove (7), a rotating cone (9) is rotatably arranged; At the center of the front end of the bottom surface of the suspension plate (6), a conical fixing device (11) is installed. At the edge of the bottom surface of the rotating cone (9), a positioning pin hole group (19) is arranged at equal intervals. At the middle of the front end of the bottom surface of the conical groove (7), a limiting pin hole group (10) is formed through the edge. At the center of the top surface of the rotating cone (9), a first vacuum detection box (35) is installed. On the left end of the top surface of the operating table base (1), a support platform is fixedly welded. On the top surface of the support platform, a second vacuum detection box (40) is fixedly arranged. A differential pressure sensor (42) is connected in series between the second vacuum detection box (40) and the first vacuum detection box (35); Below the suspension plate (6), two jolting simulation rollers (23) are movably arranged. At the middle of the top end of the front inner wall of the operating table base (1), an AC motor (20) is fixedly installed through bolts. The rotating shaft of the AC motor (20) is in transmission connection with the two jolting simulation rollers (23). Above the right front end of the outside of the operating table base (1), a transmission pressure rod (28) is rotatably arranged. The transmission pressure rod (28) is in transmission connection with the rotating shaft of the AC motor (20). Between the two top frame plates (3), a knocking rod (32) is rotatably arranged.

2. The airtight detection device for the housing of a new energy battery according to claim 1, characterized in that, At the front and rear ends of the bottom surface of the mutually approaching ends of the two top frame plates (3) and at the four corner positions of the top surface of the suspension plate (6), first hinge seats (5) are fixedly arranged. The top and bottom ends of each spring telescopic rod (4) are respectively rotatably connected to the top frame plate (3) and the suspension plate (6) through the first hinge seat (5).

3. A hermeticity detection device for a new energy battery housing according to claim 1, characterized in that, At the center of the bottom surface of the conical groove (7), a bearing (8) is fixedly installed. The bottom surface of the outer ring of the bearing (8) is fixedly connected to the bottom surface of the conical groove (7). The bottom center of the rotating cone (9) is fixedly connected to the top surface of the inner ring of the bearing (8). The limiting pin hole group (10) consists of two limiting pin holes. Each positioning pin hole group (19) consists of two positioning pin holes. The inner diameters of the limiting pin holes and the positioning pin holes are the same, and the limiting pin hole group (10) can be aligned with each positioning pin hole group (19).

4. A hermeticity detection device for a new energy battery housing according to claim 1, characterized in that, The frustum fixing device (11) includes a second hinge base (12). The top of the second hinge base (12) is fixedly connected to the middle of the front end of the bottom surface of the suspension plate (6). Inside the bottom end of the second hinge base (12), two flap side plates (13) are rotatably installed. A connecting plate (14) is fixedly welded to the front end between the two flap side plates (13). At the top end inside the second hinge base (12), a torsion spring (15) is provided. The bottom and top of the torsion spring (15) are respectively fixedly connected to the connecting plate (14) and the suspension plate (6).

5. The airtight detection device for the housing of a new energy battery according to claim 4, characterized in that, At the rear ends of the two flap side plates (13), limiting sliding grooves (16) are respectively formed through. At the rear end of the flap side plate (13), a linkage rod (17) is further provided. The linkage rod (17) passes through the two limiting sliding grooves (16), and limiting pins (18) are fixedly welded to both the left and right ends thereof. The outer diameter dimensions of the two limiting pins (18) are equal to the inner diameter of the limiting pin hole group (10) and each positioning pin hole group (19). The length of the limiting pin (18) is greater than the length of the limiting pin hole group (10), and the two limiting pins (18) are slidably connected to the inside of the limiting pin hole group (10).

6. The airtight detection device for the housing of a new energy battery according to claim 1, wherein, A simulation component through hole (2) is formed at the center of the top surface of the operation table base (1). At the center of the top end of the inner wall of the operation table base (1), a rotating shaft (21) is rotatably installed. The rotating shaft (21) is located below the simulation component through hole (2). Linkage side plates (22) are fixedly welded to the front end and the rear end of the rotating shaft (21). The two linkage side plates (22) are respectively located at the front and rear ends inside the simulation component through hole (2). The two jolting simulation rollers (23) are respectively rotatably connected to the opposite surfaces between the two ends of the two linkage side plates (22). The center distances of the two jolting simulation rollers (23) from the center of the rotating shaft (21) are not equal.

7. The airtight detection device for the shell of a new energy battery according to claim 6, characterized in that, A bevel gear is coaxially and fixedly arranged at the front end of the rotating shaft (21). A bevel gear is also coaxially and fixedly arranged at the top end of the rotating shaft of the AC motor (20). The two bevel gears are meshed with each other. A first transmission bin (101) is fixedly welded to the upper right end of the front surface outside the operation table base (1). A second transmission bin (102) is fixedly welded to the right end of the top surface of the first transmission bin (101). A transmission pressure rod (28) is rotatably arranged at the top of the front surface of the second transmission bin (102).

8. A hermeticity detection device for a new energy battery housing according to claim 7, characterized in that, A first sprocket (24) is rotatably installed at the left end inside the first transmission bin (101). A second sprocket (25) and a third sprocket (26) are rotatably arranged at the right end inside the first transmission bin (101). The second sprocket (25) and the third sprocket (26) are coaxially and fixedly connected. The first sprocket (24) is coaxially and fixedly connected to the rotating shaft (21). The first sprocket (24) is connected to the second sprocket (25) through a chain drive. A fourth sprocket (27) is rotatably arranged at the top end inside the second transmission bin (102). The fourth sprocket (27) is connected to the third sprocket (26) through a chain drive. The rotating center shaft end of the transmission pressure rod (28) is coaxially and fixedly connected to the fourth sprocket (27).

9. The airtight detection device for the housing of a new energy battery according to claim 1, wherein, The other end of the transmission pressure rod (28) is provided with a distance adjusting handle (29). A threaded rod is coaxially welded to the connecting end of the distance adjusting handle (29). An internal threaded hole is formed on the surface of the other end of the transmission pressure rod (28). The distance adjusting handle (29) is detachably connected to the transmission pressure rod (28) through the threaded rod and the internal threaded hole. The top of the knocking rod (32) is fixedly welded with a transmission shaft rod (30). The two ends of the transmission shaft rod (30) are respectively rotatably connected to the middle parts between the two top support plates (3). A transmission lever (31) is fixedly welded to the right end of the front surface of the transmission shaft rod (30). A rubber knocking hammer is fixedly arranged at the bottom end of the knocking rod (32). A limiting square groove (33) is formed at the center of the top surface of the rotary table (9). Connecting springs (34) are fixedly arranged at equal intervals on the inner wall of the limiting square groove (33). The outer bottom end of the first vacuum detection box (35) is fixedly connected to each connecting spring (34).

10. A hermeticity detection device for a new energy battery housing according to claim 1, characterized in that, A sealing cover (36) is detachably arranged on the top of the first vacuum detection box (35). A first electric control vacuum ball valve (37) is fixedly installed at the middle part of the top surface of the sealing cover (36). A second electric control vacuum ball valve (38) is fixedly installed on the front surface of the first vacuum detection box (35). A battery case docking hose (39) is fixedly arranged on the front surface of the inner wall of the first vacuum detection box (35). The battery case docking hose (39) is communicated with the second electric control vacuum ball valve (38). A third electric control vacuum ball valve (41) is fixedly and communicatively installed on the top surface of the second vacuum detection box (40). Flange pipes are fixedly arranged on the left side of the first vacuum detection box (35) and the right side of the second vacuum detection box (40). The two ends of the differential pressure sensor (42) are respectively fixedly communicated with the flange pipes of the first vacuum detection box (35) and the second vacuum detection box (40) through flanges.

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