Impact strength detection device for cylindrical lithium battery

Abstract

The invention relates to an impact strength detection device, in particular to a cylindrical lithium battery impact strength detection device, and belongs to the technical field of battery detection equipment.The cylindrical lithium battery impact strength detection device comprises a detection case, a rotating disc and a detection disc, supporting tables are distributed and fixedly installed on the detection disc, and a fire extinguishing device is arranged on the detection disc; a clamping assembly used for clamping the cylindrical lithium batteries is arranged on the supporting table, fire extinguishing nozzles are distributed on the detection disc, the fire extinguishing nozzles are communicated with a fire extinguishing device, and the fire extinguishing nozzles are connected with the detection disc through a rotary adjusting assembly. The cylindrical lithium battery is clamped through the clamping assembly, then the cylindrical lithium battery is detected through the impact block capable of freely falling, and two different forms of piercing pieces are arranged below the impact block, so that the cylindrical lithium battery can be pierced and cut. And therefore, the impact strength of the cylindrical lithium battery in different modes can be detected.

Description

Technical Field

[0001] The present invention relates to an impact strength detection device, specifically an impact strength detection device for cylindrical lithium batteries, belonging to the technical field of battery detection equipment. Background Art

[0002] The existing impact strength detection device for cylindrical lithium batteries has the publication number (CN117782498B), including an impact testing machine. Inside the impact testing machine, there are symmetrically arranged lifting guide rails in pairs and a base fixedly installed at the bottom. The surface of the lifting guide rail is slidably connected with a top plate. In the present invention, by starting the servo motor, when the lead screw drives the sleeve plate and the impact block to move to a suitable position, the electromagnet in the sleeve plate is powered off. At this time, the electromagnet at the bottom of the sleeve plate no longer adsorbs the impact block, so that the impact block drives the insertion block to fall towards the cylindrical lithium battery, enabling different parts of it to be impacted and detected at one time, greatly improving the detection efficiency and making the detection more perfect. At the same time, it is also convenient to adjust the position of the impact block for cylindrical lithium batteries of different lengths to achieve the purpose of accurate detection.

[0003] Although the above - type devices can conveniently adjust the position of the impact block for cylindrical lithium batteries of different lengths, these devices have certain defects. After the staff places the cylindrical lithium battery in the device, the above - type devices can detect the impact strength of the cylindrical lithium battery. However, the above - type devices use a method of repeatedly detecting the same sample, which does not conform to the single - variable principle, and the detection data is inaccurate. When the staff measures the same batch of batteries, after measuring one, they need to take the battery out of the device and then put the next battery into the device. This method is rather cumbersome, and the above - existing devices have poor safety.

[0004] In view of this, the present invention is specifically proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an impact strength detection device for cylindrical lithium batteries, which has the effects of high safety, saving time and effort.

[0006] The present invention realizes the above purpose through the following technical solutions. An impact strength detection device for cylindrical lithium batteries includes a detection chassis, a rotating disk and a detection disk. The detection disk is rotatably installed on the rotating disk. Support platforms are fixedly distributed on the detection disk. A fire - extinguishing device is arranged on the detection disk. A clamping assembly for clamping the cylindrical lithium battery is arranged on the support platform.

[0007] It further includes an impact detection box which is fixedly installed on the top of the detection chassis. A rope roller is rotatably installed inside the impact detection box. A detection rope is wound around the rope roller. The lower end of the detection rope is fixedly installed with a detection block. An impact block is detachably connected below the detection block. A positioning drive assembly for rotating and fixing the rope roller is symmetrically arranged inside the impact detection box;

[0008] Fire extinguishing nozzles are distributed on the detection disc. The fire extinguishing nozzles are communicated with the fire extinguishing device. The fire extinguishing nozzles are connected to the detection disc through a rotation adjustment assembly. The rotation adjustment assembly is used to swing the fire extinguishing nozzles left and right.

[0009] Furthermore, in order to drive the detection disc to rotate through the rotation motor, a rotation motor is fixedly installed inside the rotating disc. The output end of the rotation motor is fixedly connected to the detection disc. A limiting ring is sleeved on the outer surface of the rotating disc. A limiting groove is integrally formed on the inner wall of one end of multiple support platforms. The limiting ring and the limiting groove are rotationally and detachably connected to each other.

[0010] Furthermore, in order to clamp a vertically placed cylindrical lithium battery and a horizontally placed cylindrical lithium battery through the clamping plate, the clamping assembly includes a mounting plate which is symmetrically and fixedly installed on the support platform. One end of the mounting plate is fixedly installed with a clamping plate through a clamping spring. The clamping plate is provided with a semi-circular structure and a planar structure.

[0011] Furthermore, in order to be able to fix the clamping plate through the clamping screw, sliding blocks are symmetrically and fixedly installed at the lower end of the clamping plate. Sliding grooves are symmetrically opened at both ends of the upper surface of the support platform. The sliding blocks and the sliding grooves are slidably and detachably connected to each other. A threaded hole is opened on the mounting plate. The axis of the threaded hole coincides with the axis of the clamping spring. A clamping screw is screwed into the threaded hole. One end of the clamping screw abuts against one side surface of the clamping plate.

[0012] Furthermore, in order to be able to limit the rope roller, rope frames are symmetrically and fixedly installed inside the impact detection box. A ball bearing is fixedly installed inside the rope frame. Both ends of the rope roller are respectively inserted into the inner ring of the ball bearing. The detection ropes are symmetrically sleeved on the rope roller.

[0013] Furthermore, in order to drive the drive motor to move through the telescopic cylinder, a support block is fixedly installed inside the impact detection box. The positioning drive assembly includes a drive motor, a guide rod and a telescopic cylinder. A motor frame is sleeved outside the drive motor. The guide rods are symmetrically and fixedly installed on one side of the support block. One end of the guide rod penetrates through the motor frame and is fixedly connected to the rope frame.

[0014] Further, in order to limit the rope roller through the limit between the positioning gear and the positioning tooth groove, the telescopic cylinder is fixedly installed on one side of the bottom of the support block, the output end of the telescopic cylinder is fixedly connected to the motor frame, the telescopic cylinder is a telescopic hydraulic cylinder or a telescopic air cylinder, the output end of the driving motor is fixedly installed with a positioning gear, positioning tooth grooves are formed at both ends of the rope roller, and the positioning gear and the positioning tooth grooves are engaged with each other.

[0015] Further, in order to provide spring force to the positioning conical rod through the positioning spring, T-shaped card slots are symmetrically formed on one side surface of the detection block, T-shaped cards are symmetrically fixedly installed on the impact block, the T-shaped card slots and the T-shaped cards are slidably clamped with each other, spring grooves are distributed in the T-shaped card slots, positioning springs are fixedly installed in the spring grooves, one end of the positioning spring is fixedly installed with a positioning conical rod, positioning grooves are formed on the T-shaped cards, the positioning conical rod and the positioning grooves are engaged with each other, and piercing members are uniformly and fixedly installed on one side surface of the impact block.

[0016] Further, in order to detect the cylindrical lithium battery by switching the form of the piercing member, the piercing member is of a conical structure and an arc structure.

[0017] Further, in order to drive the fire extinguishing nozzle to swing through the adjusting motor, the rotation adjustment assembly includes an adjusting motor, the adjusting motor is fixedly installed inside the detection disc, the output end of the adjusting motor is fixedly connected to the fire extinguishing nozzle, a photosensitive detector is fixedly installed on the fire extinguishing nozzle, one end of the fire extinguishing nozzle is fixedly communicated with the fire extinguishing device through a telescopic hose, and a programmable logic controller is fixedly installed on the detection disc.

[0018] Technical effects and advantages of the present invention: This device can place multiple cylindrical lithium batteries vertically and horizontally on the support table, clamp the cylindrical lithium batteries through the clamping assembly, and then detect the cylindrical lithium batteries through the impact block that can freely fall. Moreover, two different forms of piercing members are arranged below the impact block, which can detect the cylindrical lithium batteries by piercing and cutting, and thus can detect the impact strength of the cylindrical lithium batteries in different ways.

[0019] 2. Through the fire extinguishing device, the photosensitive detector, the fire extinguishing nozzle and the rotation adjustment assembly, when the unqualified cylindrical lithium battery catches fire during detection, the cylindrical lithium battery can be extinguished, thereby ensuring the personal safety of the staff and improving the safety of this device. Description of the Drawings

[0020] Figure 1Schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the position of the impact detection box of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the limiting ring of the present invention;

[0023] Figure 4 Schematic diagram of the position of the rotating motor of the present invention;

[0024] Figure 5 Schematic diagram of the position of the sliding block of the present invention;

[0025] Figure 6 Schematic diagram of the position of the positioning tooth groove of the present invention;

[0026] Figure 7 Schematic diagram of one form of the piercing member of the present invention;

[0027] Figure 8 Schematic diagram of the position of the T-shaped card slot of the present invention;

[0028] Figure 9 Schematic diagram of the position of the positioning groove of the present invention;

[0029] Figure 10 Schematic diagram of another form of the piercing member of the present invention;

[0030] Figure 11 Schematic diagram of the structure of the positioning conical rod of the present invention;

[0031] Figure 12 is Figure 2 Enlarged view of the structure at A in

[0032] Figure 13 is Figure 3 Enlarged view of the structure at B in

[0033] Figure 14 is Figure 3 Enlarged view of the structure at C in

[0034] In the figure: 1, detection chassis; 2, rotating disk; 3, detection disk; 4, support platform; 5, fire extinguishing device; 6, clamping assembly; 601, mounting plate; 602, clamping spring; 603, clamping plate; 604, sliding block; 605, clamping screw; 7, impact detection box; 8, rope roller; 9, detection rope; 10, detection block; 11, impact block; 12, positioning drive assembly; 1201, drive motor; 1202, guide rod; 1203, telescopic cylinder; 1204, motor bracket; 1205, positioning gear; 1206, positioning tooth groove; 13, fire extinguishing nozzle; 14, rotating motor; 15, limit ring; 16, limit groove; 17, rope bracket; 18, ball bearing; 19, support block; 20, T-shaped card slot; 21, T-shaped card block; 22, positioning spring; 23, positioning conical rod; 24, piercing part; 25, rotation adjustment assembly; 2501, adjustment motor; 2502, photosensitive detector; 2503, telescopic hose; 26, programmable logic controller; 27, positioning groove. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figure 1-14 As shown in the figure, a cylindrical lithium battery impact resistance detection device includes a detection chassis 1, a rotating disk 2 and a detection disk 3. The detection disk 3 is rotatably installed on the rotating disk 2. Support platforms 4 are fixedly installed on the detection disk 3 in a distributed manner. A fire extinguishing device 5 is provided on the detection disk 3. The fire extinguishing device 5 is a prior art feature and is composed of a control valve, a safety valve, a driving device, and a fire extinguishing agent storage container. When the photosensitive detector 2502 on this device detects a fire source, it transmits a signal to the programmable logic controller 26, and then the programmable logic controller 26 controls the driving device to open the control valve. The driving device is an electric device, a pneumatic device or a hydraulic device, preferably a hydraulic device. When the control valve is opened, the fire extinguishing agent is released from the storage container and sprayed onto the fire source through the fire extinguishing nozzle 13 for fire extinguishing. A clamping assembly 6 for clamping the cylindrical lithium battery is provided on the support platform 4;

[0037] It further includes an impact detection box 7. The impact detection box 7 is fixedly installed on the top of the detection chassis 1. A rope roller 8 is rotatably installed inside the impact detection box 7. A detection rope 9 is wound around the rope roller 8. The lower end of the detection rope 9 is fixedly installed with a detection block 10. An impact block 11 is detachably connected below the detection block 10. A positioning drive assembly 12 for rotating and fixing the rope roller 8 is symmetrically arranged inside the impact detection box 7;

[0038] The detection plate 3 is distributed with fire extinguishing nozzles 13, and the fire extinguishing nozzles 13 are communicated with the fire extinguishing device 5. The fire extinguishing nozzles 13 are connected to the detection plate 3 through a rotation adjustment assembly 25, and the rotation adjustment assembly 25 is used to swing the fire extinguishing nozzles 13 left and right.

[0039] As Figure 3 and Figure 4 shown, a rotation motor 14 is fixedly installed inside the rotating disk 2, and the output end of the rotation motor 14 is fixedly connected to the detection plate 3. A limit ring 15 is sleeved on the outer surface of the rotating disk 2. A limit groove 16 is integrally formed on the inner wall of one end of multiple support platforms 4, and the limit ring 15 is rotationally clamped with the limit groove 16. It should be noted that the rotation motor 14 is a servo motor, which is electrically connected to the programmable logic controller 26 provided on the device. Then, the rotation motor 14 can be controlled to start through the programmable logic controller 26, and then the rotation motor 14 drives the detection plate 3 to rotate. By rotating the detection plate 3, it is convenient to rotate the cylindrical lithium battery placed on the support platform 4, and then the device can detect the impact strength of different cylindrical lithium batteries. It should be noted that in order to ensure the accuracy of the detection, each cylindrical lithium battery can only be detected once.

[0040] As Figure 5 shown, the clamping assembly 6 includes a mounting plate 601, and the mounting plate 601 is symmetrically and fixedly installed on the support platform 4. One end of the mounting plate 601 is fixedly installed with a clamping plate 603 through a clamping spring 602. The clamping plate 603 is set as a semi-circular structure and a flat structure. The lower ends of the clamping plates 603 are symmetrically and fixedly installed with sliding blocks 604. Sliding grooves are symmetrically opened at both ends of the upper surface of the support platform 4, and the sliding blocks 604 are slidably clamped with the sliding grooves. A threaded hole is opened on the mounting plate 601, and the axis of the threaded hole coincides with the axis of the clamping spring 602. A clamping screw 605 is screwed into the threaded hole, and one end of the clamping screw 605 abuts against one side surface of the clamping plate 603. By setting the clamping plates 603 with different shapes, the horizontally placed cylindrical lithium battery can be clamped, and the vertically placed cylindrical lithium battery can be placed. It should be noted that when the device places the cylindrical lithium battery, the cylindrical lithium battery needs to be placed vertically and horizontally alternately on adjacent support platforms 4. When the clamping screw 605 is not screwed in, through the elastic deformation of the clamping spring 602, cylindrical lithium batteries with different lengths and thicknesses can be clamped. After the clamping screw 605 is screwed in, the clamping screw 605 can increase the clamping force of the clamping plate 603 on the cylindrical lithium battery, ensuring that the cylindrical lithium battery is not easily separated from the support platform 4 during the impact strength detection.

[0041] As Figure 6As shown, a rope holder 17 is symmetrically and fixedly installed inside the impact detection box 7. A ball bearing 18 is fixedly installed inside the rope holder 17. Both ends of the rope roller 8 are respectively inserted into the inner ring of the ball bearing 18. The detection rope 9 is symmetrically sleeved on the rope roller 8. It should be noted that the detection rope 9 is made of a high-strength fireproof and lightweight material, such as an aramid fiber rope, but not limited to this. And a slot is opened at the bottom of the impact detection box 7 to enable the detection rope 9 to be connected to the detection block 10.

[0042] As Figure 6 and Figure 12 As shown, a support block 19 is fixedly installed inside the impact detection box 7. The positioning drive assembly 12 includes a drive motor 1201, a guide rod 1202, and a telescopic cylinder 1203. A motor frame 1204 is sleeved outside the drive motor 1201. The guide rods 1202 are symmetrically and fixedly installed on one side of the support block 19. One end of the guide rod 1202 passes through the motor frame 1204 and is fixedly connected to the rope holder 17. The telescopic cylinder 1203 is fixedly installed on one side of the bottom of the support block 19. The output end of the telescopic cylinder 1203 is fixedly connected to the motor frame 1204. The telescopic cylinder 1203 is a telescopic hydraulic cylinder or a telescopic air cylinder. The output end of the drive motor 1201 is fixedly installed with a positioning gear 1205. Positioning tooth grooves 1206 are opened at both ends of the rope roller 8. The positioning gear 1205 is engaged with the positioning tooth grooves 1206. So that when the telescopic cylinder 1203 is controlled by the programmable logic controller 26 to contract, at this time the positioning gear 1205 is disengaged from the positioning tooth grooves 1206. Then at this time, the detection block 10, the impact block 11, and the piercing member 24 start to perform free fall motion, and the cylindrical lithium battery is arranged directly below it, so as to realize the impact strength detection of the cylindrical lithium battery. After the strength detection is completed, the telescopic cylinder 1203 is controlled by the programmable logic controller 26 to extend, so that the drive motor 1201 drives the positioning gear 1205 to move towards the end of the rope roller 8. Through the engagement of the positioning gear 1205 and the positioning tooth grooves 1206, the positioning of the rope roller 8 can be realized. Then the drive motor 1201 is started by the programmable logic controller 26, so that the detection rope 9 can drive the detection block 10 to move up to a suitable position, thus preparing for the next impact strength detection.

[0043] As Figures 7-11As shown in the figure, on one side surface of the detection block 10, T-shaped card slots 20 are symmetrically opened. T-shaped clamping blocks 21 are symmetrically and fixedly installed on the impact block 11. The T-shaped card slots 20 and the T-shaped clamping blocks 21 are slidably clamped with each other. Spring grooves are distributed inside the T-shaped card slots 20. A positioning spring 22 is fixedly installed in the spring grooves. One end of the positioning spring 22 is fixedly installed with a positioning tapered rod 23. A positioning groove 27 is opened on the T-shaped clamping block 21. The positioning tapered rod 23 and the positioning groove 27 are clamped with each other. On one side surface of the impact block 11, piercing members 24 are evenly and fixedly installed. The piercing members 24 are of a tapered structure and an arc-shaped structure. It should be noted that in order to perform two types of detections on the same batch of cylindrical lithium batteries, the impact block 11 below the detection block 10 can be pulled out to replace the impact block 11. When the impact block 11 is pulled out, the positioning tapered rod 23 can be slidably clamped with the positioning groove 27 under the elastic contraction of the positioning spring 22. Then, the impact block 11 with different-shaped piercing members 24 is replaced, so that different impact strength detections can be performed on the same batch of impact blocks 11.

[0044] As Figure 14 shown, the rotation adjustment assembly 25 includes an adjustment motor 2501. The adjustment motor 2501 is fixedly installed inside the detection disc 3. The output end of the adjustment motor 2501 is fixedly connected to the fire extinguishing nozzle 13. A photosensitive detector 2502 is fixedly installed on the fire extinguishing nozzle 13. One end of the fire extinguishing nozzle 13 is fixedly communicated with the fire extinguishing device 5 through a telescopic hose 2503. A programmable logic controller 26 is fixedly installed on the detection disc 3. So that when the photosensitive detector 2502 receives a light signal, at this time, a signal is transmitted to the programmable logic controller 26, and then the fire extinguishing device 5 and the adjustment motor 2501 are controlled to operate through the programmable logic controller 26. The adjustment motor 2501 is a servo motor. At this time, it can rotate reciprocally under the control of the programmable logic controller 26, so that the fire extinguishing nozzle 13 can spray fire left and right on the cylindrical lithium battery.

[0045] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0046] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cylindrical lithium battery impact strength testing device, comprising a testing chassis (1), a rotating disk (2) and a testing disk (3), wherein the testing disk (3) is rotatably mounted on the rotating disk (2), and a support platform (4) is distributed and fixedly mounted on the testing disk (3), characterized in that: The detection plate (3) is provided with a fire extinguishing device (5), and the support platform (4) is provided with a clamping assembly (6) for clamping a cylindrical lithium battery; It also comprises an impact detection box (7), the impact detection box (7) is fixedly mounted on the top of the detection chassis (1), a rope roller (8) is rotatably mounted inside the impact detection box (7), a detection rope (9) is wound around the rope roller (8), a detection block (10) is fixedly mounted at the lower end of the detection rope (9), an impact block (11) is detachably connected below the detection block (10), and a positioning drive assembly (12) for rotating and fixing the rope roller (8) is symmetrically arranged inside the impact detection box (7); Fire extinguishing nozzles (13) are distributed on the detection disk (3), the fire extinguishing nozzles (13) are connected to the fire extinguishing device (5), and the fire extinguishing nozzles (13) are connected to the detection disk (3) via a rotating adjustment component (25), and the rotating adjustment component (25) is used to make the fire extinguishing nozzles (13) swing left and right.

2. The device for testing the impact strength of a cylindrical lithium battery according to claim 1, characterized in that: A rotating motor (14) is fixedly installed inside the rotating disk (2), and the output end of the rotating motor (14) is fixedly connected to the detection disk (3). A limiting ring (15) is sleeved on the outer surface of the rotating disk (2), and an integrally formed limiting groove (16) is formed on the inner wall of one end of the plurality of support platforms (4), and the limiting ring (15) and the limiting groove (16) are rotatably engaged with each other.

3. The device for testing the impact strength of a cylindrical lithium battery according to claim 1, characterized in that: The clamping assembly (6) comprises a mounting plate (601), wherein the mounting plate (601) is symmetrically fixedly mounted on the support platform (4), and a clamping plate (603) is fixedly mounted on one end of the mounting plate (601) via a clamping spring (602), and the clamping plate (603) is configured as a semicircular structure and a planar structure.

4. The device for testing the impact strength of a cylindrical lithium battery according to claim 3, characterized in that: A sliding block (604) is symmetrically fixedly installed at the lower end of the clamping plate (603), and sliding grooves are symmetrically provided at both ends of the upper surface of the support platform (4). The sliding block (604) and the sliding grooves are slidably engaged with each other. A screw hole is provided on the mounting plate (601), and the axis of the screw hole coincides with the axis of the clamping spring (602). A clamping screw (605) is screwed into the screw hole, and one end of the clamping screw (605) is against a surface of one side of the clamping plate (603).

5. The device for testing the impact strength of a cylindrical lithium battery according to claim 1, characterized in that: A rope rack (17) is symmetrically fixedly installed inside the impact detection box (7), a ball bearing (18) is fixedly installed inside the rope rack (17), two ends of the rope roller (8) are respectively inserted into the inner ring of the ball bearing (18), and the detection rope (9) is symmetrically sleeved on the rope roller (8).

6. A cylindrical lithium battery impact strength testing device according to claim 5, characterized in that: A support block (19) is fixedly installed inside the impact detection box (7); the positioning drive assembly (12) comprises a drive motor (1201), a guide rod (1202) and a telescopic cylinder (1203); a motor frame (1204) is sleeved on the outside of the drive motor (1201); the guide rod (1202) is symmetrically fixedly installed on one side of the support block (19); one end of the guide rod (1202) penetrates the motor frame (1204) and is fixedly connected to the rope frame (17).

7. A cylindrical lithium battery impact strength testing device according to claim 6, characterized in that: The telescopic cylinder (1203) is fixedly mounted on one side of the bottom of the support block (19); the output end of the telescopic cylinder (1203) and the motor frame (1204) are fixedly connected to each other; the telescopic cylinder (1203) is a telescopic hydraulic cylinder or a telescopic air cylinder; a positioning gear (1205) is fixedly mounted on the output end of the drive motor (1201); positioning tooth grooves (1206) are provided at both ends of the rope roller (8); and the positioning gear (1205) and the positioning tooth grooves (1206) are engaged with each other.

8. The device for testing the impact strength of a cylindrical lithium battery according to claim 1, characterized in that: A T-shaped card slot (20) is symmetrically provided on one side surface of the detection block (10), a T-shaped card block (21) is symmetrically fixedly installed on the impact block (11), the T-shaped card slot (20) and the T-shaped card block (21) are slidably engaged with each other, a spring slot is distributed inside the T-shaped card slot (20), a positioning spring (22) is fixedly installed in the spring slot, a positioning conical rod (23) is fixedly installed at one end of the positioning spring (22), a positioning slot (27) is provided on the T-shaped card block (21), the positioning conical rod (23) and the positioning slot (27) are engaged with each other, and a piercing member (24) is evenly distributed and fixedly installed on one side surface of the impact block (11).

9. A cylindrical lithium battery impact strength testing device according to claim 8, characterized in that: The piercing member (24) has a conical structure and an arc structure.

10. The device for testing the impact strength of a cylindrical lithium battery according to claim 1, characterized in that: The rotary adjustment component (25) comprises an adjustment motor (2501), the adjustment motor (2501) is fixedly mounted inside the detection disk (3), the output end of the adjustment motor (2501) and the fire extinguishing nozzle (13) are fixedly connected to each other, a photosensitive detector (2502) is fixedly mounted on the fire extinguishing nozzle (13), one end of the fire extinguishing nozzle (13) is fixedly connected to the fire extinguishing device (5) through a retractable hose (2503), and a programmable logic controller (26) is fixedly mounted on the detection disk (3).

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