A lithium battery detection device based on air-coupled ultrasound

Abstract

The present application relates to the field of lithium battery detection, and discloses a lithium battery detection device based on air-coupled ultrasound, comprising a base, on which a support frame, a clamping and rotating mechanism for clamping and rotating the lithium battery for detection, and a moving mechanism for moving the clamping and rotating mechanism are arranged, and a cleaning mechanism is arranged on the support frame; the present application sets a cleaning mechanism, a clamping and rotating mechanism, and a moving mechanism, and when detecting the lithium battery, the clamping and rotating mechanism that clamps the lithium battery to be detected is first moved to the bottom of the cleaning mechanism by the moving mechanism, and under the telescopic action of an electric telescopic rod, a cleaning brush soaked in a cleaning agent is used to clean impurities, dust, coatings, etc. on the surface of the lithium battery to be detected; compared with the prior art, the surface of the lithium battery to be detected is cleaned before detection, thereby avoiding the interference of impurities, dust, etc. on the surface of the lithium battery to be detected with the ultrasonic signal, which causes deviation in the detection result.

Description

Technical Field

[0001] The present application relates to the field of lithium battery detection, and in particular to a lithium battery detection device based on air-coupled ultrasound. Background Art

[0002] Lithium battery is a rechargeable battery that uses lithium compounds as positive active materials. It is a high energy density, lightweight battery type. Due to its unique performance characteristics, it is widely used in mobile devices, power tools, electric vehicles, energy storage systems and other fields. However, lithium batteries may have problems such as overcharging, over-discharging, short circuits, etc. during use, which may pose certain safety hazards. In serious cases, it may cause explosions, fires and other dangerous situations. Therefore, it is necessary to conduct regular inspections of lithium batteries. Regular inspections can timely discover potential problems with the battery, thereby ensuring safety during use. In addition, the performance of lithium batteries will gradually decline with the use time. Through inspections, the actual capacity, internal resistance, cycle life and other parameters of the battery can be evaluated to help users understand the health of the battery and replace aging batteries in time to ensure the normal operation of the equipment.

[0003] Most existing lithium battery testing equipment uses air-coupled ultrasound in the ultrasonic testing system to detect the health of lithium batteries. Air-coupled ultrasound is a non-destructive testing technology that uses air-transmitted ultrasound to detect defects and structural information inside lithium batteries. Compared with traditional direct contact ultrasonic testing technology, air-coupled ultrasound does not require direct contact between the sensor and the lithium battery. Instead, it transmits ultrasound through the air to achieve non-contact testing, which will not cause damage to the lithium battery.

[0004] Since lithium batteries have a wide range of applications and diverse usage scenarios, the cleanliness of the surface of each lithium battery being tested will vary. At the same time, the air-coupled ultrasonic method is sensitive to the state of the surface of the object to be tested. If there are impurities, dust, coatings, etc. on the surface of the lithium battery to be tested, it will interfere with the propagation and reception of the ultrasonic signal, thereby causing deviations in the test results. In order to solve the above problems, a lithium battery detection device based on air-coupled ultrasound is proposed.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] In order to solve the problem of lithium battery detection, the present application provides a lithium battery detection device based on air-coupled ultrasound.

[0007] The present application provides a lithium battery detection device based on air-coupled ultrasound, which adopts the following technical solution:

[0008] A lithium battery detection device based on air-coupled ultrasound comprises a base, on which a support frame, a clamping and rotating mechanism for clamping and rotating the lithium battery for detection, and a moving mechanism for moving the clamping and rotating mechanism are arranged, and a cleaning mechanism is arranged on the support frame;

[0009] The cleaning mechanism comprises a detergent tank and a moving part for moving the detergent tank, a moving support block is arranged at the bottom of the detergent tank, the moving support block is threadedly arranged with the moving part, an electric telescopic rod 1 and a bellows are arranged at the bottom of the moving support block, a cleaning box is arranged at the output end of the electric telescopic rod 1, the other end of the bellows is communicated with the cleaning box, a solenoid valve is arranged at one end of the bellows, and a cleaning brush is rotatably arranged in the cleaning box;

[0010] The base is also provided with an ultrasonic generating mechanism, and the support frame is also provided with an ultrasonic receiving mechanism.

[0011] Preferably, the moving component includes a motor 1, a moving groove is opened on the top of the support frame, a threaded rod 1 is arranged at the output end of the motor 1, the threaded rod 1 is threadedly arranged in the moving groove, and the threaded rod 1 is threadedly connected to the moving support block.

[0012] Preferably, the ultrasonic receiving mechanism and the ultrasonic generating mechanism both include a support column, a signal amplifier and an electric telescopic rod 2, the output end of the electric telescopic rod 2 is rotatably connected to the support column, the other end of the support column is connected to the signal amplifier, the bottom end of the electric telescopic rod 2 in the ultrasonic receiving mechanism is rotatably connected to the base, the other end of the signal amplifier in the ultrasonic receiving mechanism is provided with an ultrasonic receiver, the bottom end of the electric telescopic rod 2 in the ultrasonic generating mechanism is rotatably connected to the support frame, and the other end of the signal amplifier in the ultrasonic generating mechanism is provided with an ultrasonic generator.

[0013] Preferably, the clamping and rotating mechanism includes two rotating support blocks, a cylinder, and a clamping block, a rotating ring is rotatably arranged in one of the rotating support blocks, a plurality of rotating grooves are circumferentially provided on the outer circumference of the rotating ring, a roller is rotatably arranged in the rotating groove, a plurality of strip-shaped suction cups are circumferentially provided on the inner circumference of the rotating ring, the strip-shaped suction cups are in contact with the outer side of the cylinder, and the output end of the cylinder is connected to the clamping block, and one side of the other rotating support block is provided with gear 1, gear 2, motor 2, and a T-shaped mounting plate, the gear 1 is connected to the cylinder, and the gear 1 is meshed with the gear 2, and the output end of the motor 2 is connected to the gear The second motor is arranged on a T-shaped mounting plate, and the ultrasonic receiving mechanism and the ultrasonic generating mechanism both include a supporting column, a signal amplifier and an electric telescopic rod. The output end of the electric telescopic rod is rotatably connected to the supporting column, and the other end of the supporting column is connected to the signal amplifier. The bottom end of the electric telescopic rod in the ultrasonic receiving mechanism is rotatably connected to the base, and the other end of the signal amplifier in the ultrasonic receiving mechanism is provided with an ultrasonic receiver. The bottom end of the electric telescopic rod in the ultrasonic generating mechanism is rotatably connected to the supporting frame, and the other end of the signal amplifier in the ultrasonic generating mechanism is provided with an ultrasonic generator.

[0014] Preferably, the moving mechanism includes two electric push rods, a slide groove, a slider, and a motor three. A guide rod and a threaded rod two are rotatably arranged in the slide groove. The two ends of the slider are respectively slidably connected to the guide rod and threadedly connected to the threaded rod two. The output end of the motor three is connected to the threaded rod two, and the bottom of the electric push rod is connected to the slider.

[0015] Preferably, a soundproof cover is provided on one side of one of the rotating support blocks, and the gear 1, gear 2, motor 2 and T-shaped mounting plate are all arranged in the soundproof cover.

[0016] Preferably, a material guide plate is provided on one side of the base.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] By setting a cleaning mechanism, a clamping and rotating mechanism and a moving mechanism, when testing the lithium battery, the clamping and rotating mechanism that clamps the lithium battery to be tested is first moved to the bottom of the cleaning mechanism by the moving mechanism, and under the telescopic action of the electric telescopic rod 1, a cleaning brush soaked in a cleaning agent is used to clean the impurities, dust, coating, etc. on the surface of the lithium battery to be tested; compared with the prior art, the surface of the lithium battery to be tested is cleaned before testing, thereby avoiding the interference of impurities, dust, etc. on the surface of the lithium battery to be tested on the ultrasonic signal, which causes deviation in the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the application;

[0020] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of the structure in the middle;

[0021] Figure 3 is a schematic diagram of a top view of the structure of an embodiment of the application;

[0022] Figure 4 is a schematic diagram of the cleaning mechanism structure of an embodiment of the application;

[0023] Figure 5 is a schematic diagram of the structure of the clamping and rotating mechanism of the embodiment of the application;

[0024] Figure 6 It is a schematic diagram of the driven rotating structure in the clamping rotating mechanism of the embodiment of the application.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. support frame; 3. detergent tank; 4. motor one; 5. movable support block; 6. electric telescopic rod one; 7. bellows; 8. solenoid valve; 9. cleaning brush; 10. cleaning box; 11. threaded rod one; 12. rotating support block; 14. cylinder; 15. rotating ring; 16. clamping block; 18. gear one; 19. gear two; 20. motor two; 21. T-type mounting plate; 22. roller; 23. strip suction cup; 24. electric push rod; 25. slide groove; 26. guide rod; 27. threaded rod two; 28. slider; 29. ​​material guide plate; 30. sound insulation cover; 31. support column; 32. signal amplifier; 33. ultrasonic receiver; 34. ultrasonic generator; 35. motor three; 36. electric telescopic rod two. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-6 This application is described in further detail.

[0027] The present application embodiment discloses a lithium battery detection device based on air-coupled ultrasound. Figure 1-6 , a lithium battery detection device based on air-coupled ultrasound, comprising a base 1, a support frame 2, a clamping and rotating mechanism for clamping and rotating the lithium battery for detection, and a moving mechanism for moving the clamping and rotating mechanism, and a cleaning mechanism is arranged on the support frame 2;

[0028] The cleaning mechanism includes a detergent tank 3 and a moving part for moving the detergent tank 3. A moving support block 5 is arranged at the bottom of the detergent tank 3. The moving support block 5 is threadedly arranged with the moving part. An electric telescopic rod 6 and a bellows 7 are arranged at the bottom of the moving support block 5. A cleaning box 10 is arranged at the output end of the electric telescopic rod 6. The other end of the bellows 7 is communicated with the cleaning box 10. A solenoid valve 8 is arranged at one end of the bellows 7. A cleaning brush 9 is rotatably arranged in the cleaning box 10.

[0029] The base 1 is also provided with an ultrasonic generating mechanism, and the support frame 2 is also provided with an ultrasonic receiving mechanism;

[0030] It should be noted that the cleaning agent is an anhydrous isopropyl alcohol liquid, which is a colorless, volatile liquid. It has the following advantages when cleaning the battery surface: anhydrous isopropyl alcohol has high volatility and can evaporate quickly after use without leaving residue on the surface; isopropyl alcohol has good dissolving power and can effectively dissolve and remove surface attachments such as grease and dirt; since anhydrous isopropyl alcohol does not contain water, it will not cause electrolyte short circuit or other battery safety problems when cleaning the battery surface; isopropyl alcohol has low corrosiveness to general materials and can be safely used to clean the battery surface; therefore, you can use an appropriate amount of anhydrous isopropyl alcohol to clean the surface of the lithium battery, and then wait for it to evaporate and dry;

[0031] It should be further explained that a part of the brush surface of the cleaning brush 9 is at the bottom of the cleaning box 10. After the solenoid valve 8 is powered on and opened, a proper amount of cleaning agent flows into the cleaning box 10. The cleaning brush 9 can absorb the cleaning liquid in the cleaning box 10. Therefore, there will be no excessive cleaning agent dripping from the bottom of the cleaning box 10.

[0032] By adopting the above technical solution, when testing the lithium battery, the clamping and rotating mechanism that clamps the lithium battery to be tested is first moved to the bottom of the cleaning mechanism through the moving mechanism, and the solenoid valve 8 is opened after being energized, and an appropriate amount of detergent in the detergent tank 3 flows into the cleaning box 10 through the bellows 7. After the cleaning brush 9 is soaked with an appropriate amount of detergent, the cleaning brush 9 soaked with the detergent cleans the impurities, dust, coating, etc. on the surface of the lithium battery to be tested under the cooperation of the electric telescopic rod 6 and the clamping and rotating mechanism, so as to avoid the interference of impurities, dust, etc. on the surface of the lithium battery to be tested on the ultrasonic signal, which may cause deviation in the test result.

[0033] Reference Figure 1 and 3 The moving part includes a motor 4, a moving groove is provided on the top of the support frame 2, a threaded rod 11 is provided at the output end of the motor 4, the threaded rod 11 is threadedly arranged in the moving groove, and the threaded rod 11 is threadedly connected to the moving support block 5;

[0034] By adopting the above technical solution, the motor 4 drives the threaded rod 11 to drive the mobile support block 5 and the detergent tank 3, the electric telescopic rod 6, the threaded tube 7, the cleaning brush 9, and the cleaning box 10 which are arranged in cooperation with the mobile support block 5 to stably reciprocate in the mobile groove, so as to facilitate cleaning of impurities on the surface of the lithium battery to be tested.

[0035] Reference Figure 1 and 2The ultrasonic receiving mechanism and the ultrasonic generating mechanism both include a supporting column 31, a signal amplifier 32 and an electric telescopic rod 36. The output end of the electric telescopic rod 36 is rotatably connected to the supporting column 31, and the other end of the supporting column 31 is connected to the signal amplifier 32. The bottom end of the electric telescopic rod 36 in the ultrasonic receiving mechanism is rotatably connected to the base 1, and the other end of the signal amplifier 32 in the ultrasonic receiving mechanism is provided with an ultrasonic receiver 33. The bottom end of the electric telescopic rod 36 in the ultrasonic generating mechanism is rotatably connected to the supporting frame 2, and the other end of the signal amplifier 32 in the ultrasonic generating mechanism is provided with an ultrasonic generator 34.

[0036] It should be noted that the air-coupled ultrasonic method is mainly used for testing lithium batteries. The air-coupled ultrasonic transmission method is a technology that uses air as a medium to transmit and receive ultrasonic waves to penetrate the inside of the object to be tested for non-destructive testing. The air-coupled ultrasonic same-side V transmission method is a technology that arranges transmitting and receiving probes on the same side of the object to be tested, and uses ultrasonic waves to penetrate the inside of the object along a specific V-shaped path for non-destructive testing. Through carefully designed propagation paths and signal processing technologies, internal defects can be effectively detected and located. Therefore, the transmission method or the same-side V transmission method of the transmitting and receiving probes can achieve a more comprehensive detection of lithium batteries.

[0037] It should be further explained that one end of the ultrasonic receiver 33 and the ultrasonic generator 34 are both provided with probes, which are used for receiving and transmitting ultrasonic waves respectively;

[0038] By adopting the above technical solution, two groups of ultrasonic receiving mechanisms and ultrasonic generating mechanisms are symmetrically arranged. When the lithium battery is ultrasonically tested, the ultrasonic wave generated by the ultrasonic generator 34 after being powered on passes through the lithium battery to be tested and is received by the ultrasonic receiver 33. Under the action of the signal amplifier 32, the ultrasonic filter is amplified to facilitate the subsequent scanning data collection and the formation of scanning imaging. The two groups of ultrasonic receiving mechanisms and ultrasonic generating mechanisms can be used in a corresponding or cross-coordinated manner. At the same time, if the battery shell of the lithium battery to be tested is thicker or has a higher density and scanning at different angles and positions is required, the electric telescopic rod 2 36 can be driven to push the support column 31, thereby changing the angles of the ultrasonic receiving mechanism and the ultrasonic generating mechanism, thereby realizing scanning of the lithium battery to be tested at different angles and positions.

[0039] Reference Figure 5 and 6The clamping and rotating mechanism includes two rotating support blocks 12, a cylinder 14, and a clamping block 16. A rotating ring 15 is rotatably arranged in one rotating support block 12. A plurality of rotating grooves are opened in the outer circumference of the rotating ring 15. A roller 22 is rotatably arranged in the rotating groove. A plurality of strip-shaped suction cups 23 are circumferentially arranged in the rotating ring 15. The strip-shaped suction cups 23 are in contact with the outer side of the cylinder 14. The output end of the cylinder 14 is connected to the clamping block 16. A gear 18, a gear 2 19, a motor 20, and a T-shaped mounting plate 21 are arranged on one side of the other rotating support block 12. The gear 18 is connected to the cylinder 14, and the gear 18 and the gear 2 19 are meshed. The output end of the motor 20 is connected to the gear 2 19, and the motor 20 is arranged on the T-shaped mounting plate 21.

[0040] It should be noted that the clamping block 16 can be changed into a suitable shape according to the shape of the lithium battery to be tested, and the cylinder 14 connected to the gear 18 is rotatably connected to the rotating support block 12;

[0041] By adopting the above technical solution, the driving cylinder 14 can make the two clamping blocks 16 move relative to each other to clamp and fix the lithium battery to be tested. When cleaning the surface of the lithium battery to be tested, the roller 22 can assist the cylinder 14 to rotate, and the strip-shaped suction cup 23 can make the cylinder 14 more stable. The driving motor 20 makes the gear 18 and the gear 2 19 mesh and rotate, so that the two clamping blocks 16 drive the lithium battery to be tested to rotate together, which is convenient for cleaning the surface of the lithium battery to be tested. At the same time, if the battery shell of the lithium battery to be tested is thicker or has a higher density and scanning at different angles and positions is required, this method can also be used to rotate the lithium battery to be tested, and the ultrasonic generating mechanism and the ultrasonic receiving mechanism can be cooperated to change the detection position, so as to facilitate comprehensive detection of the lithium battery.

[0042] Reference Figure 1 The moving mechanism includes two electric push rods 24, a slide groove 25, a slider 28, and a motor 35. The slide groove 25 is provided with a guide rod 26 and a threaded rod 27 for rotation. Both ends of the slider 28 are respectively connected to the guide rod 26 for sliding connection and the threaded rod 27 for thread connection. The output end of the motor 35 is connected to the threaded rod 27. The bottom of the electric push rod 24 is connected to the slider 28.

[0043] It should be noted that the inner cavities of the two slide grooves 25 are connected, and the slider 28 passes through the same cavity and is respectively slidably connected to the guide rod 26 and threadedly connected to the second threaded rod 27;

[0044] By adopting the above technical solution, the electric push rod 24 is used to lift and lower the clamping and rotating mechanism, which is convenient for adjusting the height of the clamping and rotating mechanism according to lithium batteries of different specifications. At the same time, the motor three 35 drives the threaded rod two 27, so that the slider 28 drives the electric push rod 24 and the clamping transmission mechanism to move smoothly in the slide groove 25.

[0045] Reference Figure 1 A soundproof cover 30 is provided on one side of a rotating support block 12, and gear 1 18, gear 2 19, motor 2 20, and T-shaped mounting plate 21 are all arranged in the soundproof cover 30;

[0046] It should be noted that the material of the soundproof cover 30 is such as rubber, polyethylene foam, polyurethane foam, etc., which can play a role in isolating sound;

[0047] By adopting the above technical solution, under the sound insulation effect of the sound insulation cover 30, the noise generated when the motor 20 drives the gear 18 and the gear 2 19 to rotate can be reduced, and the interference during the air-coupled ultrasonic detection of the lithium battery can be reduced.

[0048] Reference Figure 1 , a material guide plate 29 is provided on one side of the base 1;

[0049] By adopting the above technical solution, the batteries after inspection are fed into the next step through the guide plate 29 .

[0050] The implementation principle of the lithium battery detection device based on air-coupled ultrasound in the embodiment of the present application is as follows: when detecting the lithium battery, the cylinder 14 is first driven to clamp and fix the lithium battery to be detected between the clamping blocks 16, and the motor three 35 is driven to move the clamped lithium battery to be detected to below the cleaning brush 9. At this time, the solenoid valve 8 is energized to open, and an appropriate amount of detergent flows from the detergent tank 3 into the cleaning box 10 through the threaded tube 7. The solenoid valve 8 is powered off and closed, and the cleaning brush 9 absorbs an appropriate amount of detergent. The driving motor one 4 makes the mobile support block 5 and the detergent tank 3, the electric telescopic rod one 6, the threaded tube 7, the cleaning brush 9, and the cleaning box 10 arranged in cooperation with the mobile support block 5 move back and forth stably in the mobile groove. At the same time, the driving motor two 20 makes the gear one 18 and the gear two 19 mesh and rotate, so that the two clamping blocks 16 drive the lithium battery to be detected to rotate together, which is convenient for cleaning impurities on the surface of the lithium battery to be detected. After the cleaning is completed, the motor three 35 is driven again to move the clamped lithium battery to be detected to the bottom of the ultrasonic generating mechanism. The ultrasonic wave generated by the ultrasonic generator 34 after being energized passes through the lithium battery to be detected and is received by the ultrasonic receiver 33. Under the action of the signal amplifier 32, the ultrasonic filter is amplified to facilitate the subsequent scanning data collection and the formation of scanning imaging. If the battery shell of the lithium battery to be detected is thicker or has a higher density, and scanning at different angles and positions is required, the electric telescopic rod two 36 can be driven to push the support column 31, thereby changing the angle of the ultrasonic receiving mechanism and the ultrasonic generating mechanism, and can cooperate with the driving motor two 20 at the same time to make the gear one 18 and the gear two 19 mesh and rotate, so that the two clamping blocks 16 drive the lithium battery to be detected to rotate together, so as to realize the scanning of different angles and positions of the lithium battery to be detected. After the scanning is completed, the detected lithium battery is placed on the guide plate 29 and input into the next link.

[0051] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0052] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0053] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0054] 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 lithium battery detection device based on air-coupled ultrasound, comprising a base (1), characterized in that: The base (1) is provided with a support frame (2), a clamping and rotating mechanism for clamping and rotating the lithium battery for detection, and a moving mechanism for moving the clamping and rotating mechanism, and the support frame (2) is provided with a cleaning mechanism; The cleaning mechanism comprises a detergent tank (3) and a moving component for moving the detergent tank (3); a moving support block (5) is arranged at the bottom of the detergent tank (3); the moving support block (5) is threadedly arranged with the moving component; an electric telescopic rod (6) and a bellows (7) are arranged at the bottom of the moving support block (5); a cleaning box (10) is arranged at the output end of the electric telescopic rod (6); the other end of the bellows (7) is communicated with the cleaning box (10); a solenoid valve (8) is arranged at one end of the bellows (7); and a cleaning brush (9) is rotatably arranged in the cleaning box (10); The base (1) is also provided with an ultrasonic generating mechanism, and the support frame (2) is also provided with an ultrasonic receiving mechanism.

2. The lithium battery detection device based on air-coupled ultrasound according to claim 1, characterized in that: The moving component comprises a motor (4), a moving groove is provided on the top of the support frame (2), a threaded rod (11) is provided at the output end of the motor (4), the threaded rod (11) is threadedly arranged in the moving groove, and the threaded rod (11) is threadedly connected to the moving support block (5).

3. The lithium battery detection device based on air-coupled ultrasound according to claim 1, characterized in that: The ultrasonic receiving mechanism and the ultrasonic generating mechanism both comprise a support column (31), a signal amplifier (32) and an electric telescopic rod (36); the output end of the electric telescopic rod (36) is rotatably connected to the support column (31); the other end of the support column (31) is connected to the signal amplifier (32); the bottom end of the electric telescopic rod (36) in the ultrasonic receiving mechanism is rotatably connected to the base (1); the other end of the signal amplifier (32) in the ultrasonic receiving mechanism is provided with an ultrasonic receiver (33); the bottom end of the electric telescopic rod (36) in the ultrasonic generating mechanism is rotatably connected to the support frame (2); and the other end of the signal amplifier (32) in the ultrasonic generating mechanism is provided with an ultrasonic generator (34).

4. The lithium battery detection device based on air-coupled ultrasound according to claim 1, characterized in that: The clamping and rotating mechanism comprises two rotating support blocks (12), a cylinder (14), and a clamping block (16); a rotating ring (15) is rotatably arranged inside one of the rotating support blocks (12); a plurality of rotating grooves are circumferentially provided on the outer side of the rotating ring (15); a roller (22) is rotatably arranged in the rotating groove; a plurality of strip-shaped suction cups (23) are circumferentially provided inside the rotating ring (15); the strip-shaped suction cups (23) are in contact with the outer side of the cylinder (14); and the cylinder (14) ) is connected to a clamping block (16); one side of the other rotating support block (12) is provided with a gear 1 (18), a gear 2 (19), a motor 2 (20), and a T-shaped mounting plate (21); the gear 1 (18) is connected to the cylinder (14), and the gear 1 (18) and the gear 2 (19) are meshed; the output end of the motor 2 (20) is connected to the gear 2 (19), and the motor 2 (20) is arranged on the T-shaped mounting plate (21).

5. The lithium battery detection device based on air-coupled ultrasound according to claim 1, characterized in that: The moving mechanism comprises two electric push rods (24), a slide groove (25), a slider (28), and a motor three (35). A guide rod (26) and a threaded rod two (27) are rotatably arranged in the slide groove (25). Two ends of the slider (28) are respectively slidably connected to the guide rod (26) and threadedly connected to the threaded rod two (27). The output end of the motor three (35) is connected to the threaded rod two (27). The bottom of the electric push rod (24) is connected to the slider (28).

6. The lithium battery detection device based on air-coupled ultrasound according to claim 4, characterized in that: A soundproof cover (30) is arranged on one side of the rotating support block (12), and the gear 1 (18), gear 2 (19), motor 2 (20), and T-shaped mounting plate (21) are all arranged in the soundproof cover (30).

7. The lithium battery detection device based on air-coupled ultrasound according to claim 1, characterized in that: A material guide plate (29) is provided on one side of the base (1).

Images