A flame retardant device for lithium battery puncture test equipment

Abstract

The present invention relates to the field of acupuncture equipment, and discloses a flame retardant device for lithium battery acupuncture test equipment, including a body, two clamping seats for supporting raw materials and a puncture needle for testing are arranged inside the body, a cover shell for supporting the puncture needle and a driving module for driving the cover shell to move are arranged inside the body, the bottom of the puncture needle protrudes relative to the bottom of the cover shell, and the cover shell corresponds to the two clamping seats up and down, and two telescopic components for supporting the two clamping seats are arranged inside the body. The present invention can drive the two clamping seats to separate to both sides when a fire occurs through the cooperation between the cover shell, the clamping seat and the telescopic component, so that the puncture needle and the cover shell can drive the raw materials to drop into the water source synchronously, thereby realizing the synchronous fire extinguishing and cooling of the raw materials, the puncture needle and the cover shell, and there is no need to disassemble and assemble the puncture needle many times during the test process, which can effectively improve the overall experimental efficiency and reduce the operation burden of the user.

Description

Technical Field

[0001] The invention relates to the technical field of acupuncture equipment, and in particular to a flame retardant device used for lithium battery acupuncture test equipment. Background Art

[0002] The lithium battery puncture test is to place a fully charged battery on a flat surface and pierce the battery radially with a steel needle with a diameter of 3-8mm to simulate internal short circuit and external short circuit processes. At this time, the battery's electrical energy is converted into heat energy and stored inside the battery. The short circuit causes a concentrated burst and release of energy in a short period of time, which may cause smoke, leakage, or even fire and explosion. The gases produced by its continued combustion or explosion will cause continuous pollution and damage to the surrounding environment, so timely fire extinguishing is very necessary.

[0003] For example, Chinese patent publication number CN115963295A discloses a flame retardant device and test method for lithium battery needle puncture test, which aims to solve the problems of high cost of eliminating fire source after lithium battery needle puncture fire and complex automation procedures in the prior art. It includes a water tank for providing reaction space, a fixing device for clamping lithium batteries, a probe that can be melted after the lithium battery burns, and a clamping block with a special structure. The clamping device can be forcibly opened to release the lithium battery during the puncture process, and the probe can fall into the aqueous solution under the water tank after melting to achieve the fire extinguishing function. It is used to cool down and extinguish the burning lithium battery in the lithium battery needle puncture experiment. The device does not need to prepare additional spraying environment and equipment. It can realize the automation of fire extinguishing through mechanical components on the basis of the original test substrate. At the same time, it can effectively reduce the cost of fire extinguishing and promote the reduction of test costs.

[0004] This application separates the measuring needle from the mounting block, allowing the measuring needle and the raw material to drop synchronously into the water to complete fire extinguishing and cooling. In actual use, if multiple tests are carried out, the measuring needle needs to be disassembled and assembled multiple times, which reduces the overall efficiency of the test. In addition, the mounting block is often burned by flames during experiments. If it is not effectively cooled, its service life will be affected. There are certain limitations to its use.

[0005] Therefore, it is necessary to provide a flame retardant device for lithium battery puncture test equipment to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a flame retardant device for lithium battery puncture test equipment to solve the problems raised in the above background technology.

[0007] To achieve the above purpose, a flame retardant device for lithium battery puncture test equipment is designed, in which the needle and the component on which the needle is installed can be lowered synchronously, so that the needle, the component on which the needle is installed and the raw material can be extinguished and cooled at the same time.

[0008] Based on the above ideas, the present invention provides the following technical solutions: a flame retardant device for lithium battery puncture test equipment, comprising a body, wherein two clamping seats for supporting raw materials and a needle for testing are arranged inside the body, and a cover shell for supporting the needle and a driving module for driving the cover shell to move are arranged inside the body, the bottom of the needle protrudes relative to the bottom of the cover shell and the cover shell corresponds to the two clamping seats up and down, and two telescopic components for supporting the two clamping seats respectively are arranged inside the body; when the driving module drives the cover shell and the needle to descend, the telescopic component can make the cover shell, the needle and the raw material pass over the clamping seat and descend again.

[0009] As a further solution of the present invention: the telescopic assembly includes a sleeve arranged on the inner wall of the body, the interior of the sleeve is elastically connected to a support rod fixedly connected to the clamp seat through a first spring, and the first spring makes the support rod tend to be relatively away from the sleeve.

[0010] As a further solution of the present invention: the sleeve is fixedly connected to the inner wall of the body.

[0011] As a further solution of the present invention: outer arc edges are arranged on both sides of the bottom of the cover shell; when the cover shell descends, the two clamping seats can be driven to separate to both sides through the outer arc edges.

[0012] As a further solution of the present invention: the sleeve is slidably matched with the inner side wall of the body, and the inner side wall of the body is provided with a vertical groove for the sleeve to slide up and down.

[0013] As a further solution of the present invention: inner arc edges are arranged on both sides of the inner wall of the cover shell; when the cover shell descends, the inner arc edges can drive the two clamping seats to close toward the middle.

[0014] As a further solution of the present invention: an adjustment component is commonly arranged between the sleeve, the clamp seat and the body; when the cover shell descends and the two clamp seats are closed to the middle, the clamp seat and the telescopic component can be driven to descend synchronously through the adjustment component.

[0015] As a further solution of the present invention: the adjustment assembly includes a second spring fixedly connected to the sleeve, a bottom plate fixedly connected to the clamp seat, and a top plate fixedly installed on the bottom wall of the machine body, and the top of the top plate is against the bottom of the bottom plate; when the cover shell descends and the two clamp seats are closed to the middle, the bottom plate can be moved to be offset from the top plate.

[0016] As a further solution of the present invention: the second spring is located below the sleeve, and the second spring is arranged inside the vertical groove.

[0017] As a further solution of the present invention: an air extraction module is disposed between the top of the cover shell and the machine body.

[0018] Compared with the prior art, the beneficial effects of the present invention are: through the cooperation between the cover, the clamping seat and the telescopic assembly, when a fire occurs, the two clamping seats can be driven to separate to both sides, so that the thorn needle and the cover can drive the raw material to drop into the water source synchronously, thereby realizing the synchronous fire extinguishing and cooling of the raw material, the thorn needle and the cover, which can relatively extend the service life of the cover, and has a gathering effect on the smoke and gas during the fire, which can be easily collected to avoid escaping. There is no need to disassemble and assemble the thorn needle multiple times during the test, which can effectively improve the overall experimental efficiency and reduce the user's operating burden, and the overall practicality is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0021] Figure 2 It is a front view of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the telescopic assembly structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the clamping seat and the adjusting assembly of the present invention;

[0024] Figure 5 It is a schematic diagram of the sleeve and the second spring structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the top plate and bottom plate structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the cover shell and the clamping seat structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the U-shaped shell and partition structure of the present invention;

[0028] Fig. 9 It is a schematic diagram of the transmission assembly structure of the present invention;

[0029] Fig.10 It is a schematic diagram of the partition and clamping seat structure of the present invention.

[0030] In the figure: 1, machine body; 2, cover shell; 3, drive module; 4, needle; 5, telescopic assembly; 6, clamp seat; 7, adjustment assembly; 8, transmission assembly; 101, vertical slot; 201, outer arc edge; 202, inner arc edge; 203, U-shaped shell; 204, partition; 205, placement slot; 501, sleeve; 502, support rod; 503, first spring; 701, bottom plate; 702, top plate; 703, second spring; 801, rack; 802, gear; 803, gear plate. DETAILED DESCRIPTION

[0031] Embodiment 1:

[0032] See also Figures 1 to 3 The embodiment of the present invention provides a flame retardant device for lithium battery puncture test equipment, which is mainly used to reduce the number of disassembly and assembly of the puncture needle 4 on the basis of ensuring that the puncture needle 4 and the raw material are extinguished and cooled. The device includes a body 1, and the body 1 is provided with two clamping seats 6 for supporting the raw material and the puncture needle 4 for testing. The body 1 is provided with a cover 2 for supporting the puncture needle 4 and a driving module 3 for driving the cover 2 to move. The cover 2 is open at the bottom and the bottom of the puncture needle 4 can protrude relative to the bottom of the cover 2.

[0033] Furthermore, in the working state, a cooling water source is placed at the bottom of the body 1, such as Figure 2 As shown, the water source is located at the bottom of the clamp seat 6 and can be relatively close to the clamp seat 6; two telescopic components 5 are provided inside the machine body 1 for supporting the two clamp seats 6 respectively. When the driving module 3 drives the cover 2 and the thorn needle 4 to descend, the acupuncture test can be realized. When a fire occurs, the driving module 3 drives the cover 2 and the thorn needle 4 to continue to descend, and the thorn needle 4 continues to be inserted into the raw material; then the cover 2 contacts the two clamp seats 6 and drives the two clamp seats 6 to separate, and finally the driving module 3 can drive the cover 2, the thorn needle 4 and the raw material to descend into the water source synchronously, so that the cover 2, the thorn needle 4 and the raw material can be extinguished and cooled.

[0034] In this embodiment, the needle 4 is fixedly connected to the housing 2, and the driving module 3 can drive the housing 2 to move in the up and down direction, and the two clamping seats 6 can be closed toward the middle under the action of the two telescopic components 5, thereby realizing the position limitation of the intermediate raw material. Among them, the driving module 3, the needle 4 and the clamping seat 6 are all existing mature technologies and will not be described in detail here.

[0035] It is understandable that the machine body 1 shown in the drawings of the specification omits the door panel. In actual use, the door panel is openable and closable based on the machine body 1 for taking and placing raw materials, and the opening and closing of the door panel will not affect the water source at the bottom of the machine body 1.

[0036] Reference Figure 1 and Figure 2 In this embodiment, preferably: outer arc edges 201 are provided on both sides of the bottom of the cover shell 2, and the cover shell 2 and the two clamping seats 6 are in a vertically corresponding state; when the cover shell 2 is driven by the driving module 3 to descend, the outer arc edges 201 of the cover shell 2 can contact the two clamping seats 6 and drive the two clamping seats 6 to separate to both sides. Of course, the tops of the two clamping seats 6 can also be provided with arc surfaces to better contact the outer arc edges 201 of the cover shell 2.

[0037] Reference Figure 2 and Figure 3In this embodiment, preferably: the telescopic assembly 5 includes a sleeve 501 arranged on the inner wall of the body 1, and the interior of the sleeve 501 is elastically connected to a support rod 502 fixedly connected to the clamp seat 6 through a first spring 503. The first spring 503 makes the support rod 502 have a tendency to be relatively far away from the sleeve 501, thereby driving the two clamp seats 6 to have a tendency to close toward the middle. When the raw material is placed between the two clamp seats 6, the clamping and limiting of the raw material is achieved, and a certain gap is left between the two clamp seats 6 to facilitate the relative opening of the two clamp seats 6 and the placement of the raw material.

[0038] In this embodiment, the sleeve 501 is fixedly connected to the inner wall of the body 1, so that the clamping seat 6 can only move in the left and right directions. In order to facilitate observation of the state of the raw materials, the cover shell 2 can also be designed to be transparent.

[0039] When in use, the raw material is placed between the two clamping seats 6, and the two clamping seats 6 are closed by the first spring 503 to clamp the raw material in the middle and provide a certain support force for the raw material. Then the driving module 3 drives the cover 2 and the needle 4 to descend, so that the needle 4 pierces the raw material for acupuncture test. When a fire occurs, the driving module 3 drives the cover 2 and the needle 4 to continue to descend. When the cover 2 contacts the clamping seats 6, the two clamping seats 6 can be driven to separate to the left and right sides, thereby releasing the limit on the raw material; at this time, the descent of the cover 2 and the needle 4 will drive the raw material to move synchronously, and finally the cover 2, the needle 4 and the raw material can all descend to the water source, thereby achieving effective fire extinguishing and cooling of the raw material, the needle 4 and the cover 2.

[0040] In this embodiment, the cover 2 can also play a protective role against fire and combustion, and avoid the splashing of materials caused by explosion. In actual use, an exhaust module (not shown in the figure) can be installed between the top of the cover 2 and the body 1. The exhaust module can have a hose or a telescopic tube that will not affect the movement of the cover 2; when a fire occurs, the exhaust module can be activated to extract harmful smoke and gas. Among them, the exhaust module is an existing mature technology and will not be described in detail here.

[0041] In summary, through the coordination of the structures such as the cover 2, the outer arc edge 201, the clamp seat 6 and the support rod 502, when a fire occurs, the two clamp seats 6 can be driven to separate to both sides, so that the needle 4 and the cover 2 can drive the raw material to drop into the water source synchronously, thereby realizing the synchronous fire extinguishing and cooling of the raw material, the needle 4 and the cover 2, which can relatively extend the service life of the cover 2, and has a gathering effect on the smoke and gas during the fire, which can be easily collected to avoid escaping. There is no need to disassemble and assemble the needle 4 many times during the test, which can effectively improve the overall experimental efficiency, reduce the user's operating burden, and have higher overall practicality.

[0042] Embodiment 2:

[0043] See also Figures 1 to 7On the basis of the first embodiment, in order to realize the fire extinguishing cooling of the clamp seat 6, the placement of the sleeve 501 and the cover 2 are improved: at this time, the sleeve 501, the clamp seat 6 and the machine body 1 are jointly provided with an adjustment component 7, and the sleeve 501 and the inner side wall of the machine body 1 are in up and down sliding cooperation. When the cover 2 drives the needle 4 to descend in the initial state, the clamp seat 6 will not move in the up and down direction, which can realize the effective support of the raw material; when the cover 2 contacts the clamp seat 6 when the fire starts, the clamp seat 6 can drive the raw material and the needle 4 to descend synchronously through the adjustment component 7; thus, the synchronous fire extinguishing cooling of the clamp seat 6, the raw material, the needle 4 and the cover 2 can be realized.

[0044] In this embodiment, the cover shell 2 does not have an outer arc edge 201 but is instead provided with an inner arc edge 202. The cover shell 2 is also in a corresponding relationship with the two clamp seats 6 up and down. When the cover shell 2 descends, the two clamp seats 6 can be driven to continue to close toward the middle through the inner arc edge 202. When the puncture needle 4 is inserted into the battery, the battery itself undergoes a certain bending deformation. Therefore, the continued closing of the two clamp seats 6 will not be interfered with and can proceed smoothly.

[0045] Reference Figure 4 and Figure 6 In this embodiment, preferably, the adjustment component 7 includes a second spring 703 fixedly connected to the sleeve 501, a bottom plate 701 fixedly connected to the clamp seat 6, and a top plate 702 fixedly installed on the bottom wall of the body 1, and the top of the top plate 702 is abutted against the bottom of the bottom plate 701, so as to realize effective support for the bottom plate 701 and the clamp seat 6 in the up and down directions.

[0046] Furthermore, the inner wall of the body 1 is provided with a vertical groove 101 for the sleeve 501 to slide up and down, and the second spring 703 is also arranged inside the vertical groove 101. When the cover 2 contacts the two clamping seats 6 and drives the two clamping seats 6 to close, the bottom plate 701 can be driven to close to the middle and finally staggered with the top plate 702; then the cover 2 continues to descend and contacts the support rod 502 and pushes the support rod 502 to continue to descend, and the support rod 502 drives the sleeve 501 and the clamping seat 6 to synchronously descend along the vertical groove 101 and squeeze the second spring 703.

[0047] When in use, the cover 2, the outer arc edge 201 and the support rod 502 and other structures can make the needle 4, the cover 2 and the raw material synchronously descend into the water source, so that the raw material, the needle 4 and the cover 2 can be synchronously extinguished and cooled. The working process and effect of this part are the same as those in the first embodiment, and will not be repeated here. The difference is that in the normal state, the needle 4 is in contact with the raw material, and at this time, the top plate 702 can effectively support the top plate 702 and the clamping seat 6. When the fire starts and the driving module 3 drives the cover shell 2 and the needle 4 to continue to descend, the inner arc edge 202 of the cover shell 2 drives the two clamping seats 6 to close to the middle, and the clamping seat 6 drives the two bottom plates 701 to move synchronously so that the bottom plate 701 and the top plate 702 are staggered; then the cover shell 2 and the needle 4 continue to descend, so that the bottom wall of the cover shell 2 contacts the top surface of the support rod 502 and pushes the support rod 502 to descend, and the support rod 502 drives the sleeve 501, the clamping seat 6 and the raw material to descend synchronously, and finally the sleeve 501, the support rod 502, the clamping seat 6, the cover shell 2, the needle 4 and the raw material can all be immersed in the water source.

[0048] In the first embodiment, the cover shell 2, the needle 4 and the raw material can be driven to descend into the water source synchronously. However, the clamp seat 6 is in direct contact with the raw material in actual use, and the clamp seat 6 is greatly damaged when it catches fire. If the clamp seat 6 is not properly and effectively cooled, the service life of the clamp seat 6 and adjacent components will be greatly shortened, and there are certain limitations in use.

[0049] Compared with the first embodiment, through the cooperation of the structures such as the cover shell 2, the top plate 702, the bottom plate 701 and the second spring 703, when a fire occurs, the position limit of the clamp seat 6 and the sleeve 501 in the vertical direction can be released, so that the continued descent of the cover shell 2 can drive the sleeve 501, the support rod 502, the clamp seat 6 and the raw material to move synchronously, so that the sleeve 501, the support rod 502, the clamp seat 6, the raw material, the cover shell 2 and the needle 4 can all be immersed in the water source, which can achieve effective fire extinguishing and cooling of multiple corresponding parts, and the overall cooling effect is better and more parts are cooled, which can effectively extend the service life of multiple corresponding parts. The overall design is combined with the movement of the clamp seat 6, and a certain support force can be provided for the clamp seat 6 in the vertical direction, so that the needle 4 can be better inserted into the raw material for testing, which is more conducive to the test and has stronger applicability.

[0050] Embodiment three:

[0051] See also Figures 1 to 10 On the basis of the second embodiment, in order to further avoid smoke escape and material splashing, an improvement is made: at this time, the cover shell 2 includes a U-shaped shell 203 fixedly connected to the driving module 3 and the needle 4 and two partitions 204 that slide up and down with the U-shaped shell 203, and the two partitions 204 are arranged in front and back correspondence based on the U-shaped shell 203, and the inner arc edge 202 is set on the inner wall of the U-shaped shell 203.

[0052] Furthermore, a transmission assembly 8 is provided between the U-shaped shell 203 and the two partitions 204, and the transmission assembly 8 protrudes relative to the bottom surface of the U-shaped shell 203; at the same time, the transmission assembly 8 also corresponds to the position of the support rod 502, and when the U-shaped shell 203 descends, it can contact the clamping seat 6 to drive the two clamping seats 6 to continue to close, and can also make the transmission assembly 8 contact the top wall of the support rod 502, and then drive the two partitions 204 to descend based on the U-shaped shell 203 through the transmission assembly 8, so that the front and rear sides of the clamping seat 6 are correspondingly closed.

[0053] In this embodiment, the opposite sides of the two partitions 204 can correspond to the front and rear sides of the clamp seat 6 respectively. When the partition 204 is lowered, it fits with the front surface / rear surface of the clamp seat 6, and cooperates with the U-shaped shell 203 to form a relatively sealed space; of course, the bottoms of the two clamp seats 6 are exposed, allowing water to enter freely. At the same time, the partition 204 can protrude relative to the top surface of the U-shaped shell 203, so that the sealing effect can still be guaranteed even if the U-shaped shell 203 is lowered.

[0054] Reference Figures 8 to 10 In this embodiment, preferably, the transmission assembly 8 includes a toothed plate 803 fixedly connected to the partition 204, a rack 801 slidably matched with the U-shaped shell 203, and a gear 802 rotatably mounted on the side wall of the U-shaped shell 203. The toothed plate 803 and the rack 801 are both meshed with the gear 802 for transmission, and the two are symmetrically staggered, so that the moving directions of the rack 801 and the toothed plate 803 are opposite. At the same time, the rack 801 corresponds to the support rod 502 in the upper and lower directions, and when the U-shaped shell 203 descends, the rack 801 can contact the support rod 502.

[0055] In order to ensure the automatic reset of the rack 801, the gear 802 is rotatably mounted on the U-shaped shell 203 through a rotating shaft and a torsion spring (not shown). At the same time, both sides of the U-shaped shell 203 are provided with placement grooves 205 for the placement of the rack 801, the gear 802 and the tooth plate 803.

[0056] When in use, through the structures such as the cover shell 2, the top plate 702 and the bottom plate 701, the sleeve 501, the support rod 502, the clamp seat 6, the raw material, the cover shell 2 and the needle 4 can all be immersed in the water source, which can achieve effective fire extinguishing and cooling of multiple corresponding components. The working process and effect of this part are the same as those in Example 2 and will not be repeated here. The difference is that: when a fire breaks out and the driving module 3 drives the U-shaped shell 203, the partition 204 and the needle 4 to continue to descend, the inner arc edge 202 of the U-shaped shell 203 drives the two clamping seats 6 and the bottom plate 701 to close to the middle, releasing the limit of the clamping seat 6 in the up and down directions; at the same time, the U-shaped shell 203 can drive the bottom of the rack 801 to contact the top surface of the support rod 502, so that the rack 801 slides along the mounting groove 205 and drives the toothed plate 803 and the partition 204 to descend through the gear 802, and finally the two partitions 204 respectively descend to the front and rear surfaces of the clamping seat 6 and achieve adhesion, thereby forming a relatively sealed space above the clamping seat 6 and on the front and rear sides.

[0057] In the second embodiment, since both the front and rear sides of the clamp seat 6 are exposed, when a fire or even an explosion occurs, smoke and materials are likely to escape and splash from the front and rear sides of the clamp seat 6, thereby posing certain safety hazards and certain usage limitations.

[0058] Compared with the second embodiment, through the coordination of the partition plate 204, the U-shaped shell 203, the rack 801 and the tooth plate 803, when the U-shaped shell 203 drives the clamp seat 6 and the raw material to descend, a relatively sealed space can be formed above and on both sides of the clamp seat 6, effectively reducing smoke escaping and material splashing, and reducing the possibility of safety accidents. The overall design is combined with the movement of the U-shaped shell 203 and the setting of the support rod 502. When used in conjunction with the exhaust module, it can also effectively improve the efficiency of extracting waste, and at the same time, water will not enter from the clamp seat 6 to quickly cool the raw material, so that the safety of the overall test is improved, meeting more needs in actual use.

Claims

1. A flame retardant device for lithium battery puncture test equipment, comprising a body, wherein two clamping seats for supporting raw materials and a puncture needle for testing are arranged inside the body, characterized in that: The body is provided with a cover for supporting the needle and a driving module for driving the cover to move, the bottom of the needle protrudes relative to the bottom of the cover, and the cover corresponds to the two clamping seats in an up-down manner, and the body is provided with two telescopic components for supporting the two clamping seats respectively, and a cooling water source is placed at the bottom of the body; when the driving module drives the cover and the needle to descend, the cover, the needle and the raw material can pass over the clamping seats and descend again through the telescopic components; The telescopic assembly comprises a sleeve arranged on the inner wall of the body, the interior of the sleeve is elastically connected to a support rod fixedly connected to the clamp seat via a first spring, and the first spring makes the support rod have a tendency to be relatively far away from the sleeve.

2. The flame retardant device for lithium battery puncture test equipment according to claim 1, characterized in that: The sleeve is fixedly connected to the inner side wall of the body.

3. The flame retardant device for lithium battery puncture test equipment according to claim 2, characterized in that: Both sides of the bottom of the cover shell are provided with outer arc edges; when the cover shell descends, the outer arc edges can drive the two clamping seats to separate to both sides.

4. The flame retardant device for lithium battery puncture test equipment according to claim 1, characterized in that: The sleeve is slidably matched with the inner side wall of the machine body, and the inner side wall of the machine body is provided with a vertical groove for the sleeve to slide up and down.

5. The flame retardant device for lithium battery puncture test equipment according to claim 4, characterized in that: Both sides of the inner wall of the cover shell are provided with inner arc edges; when the cover shell descends, the inner arc edges can drive the two clamping seats to close toward the middle.

6. The flame retardant device for lithium battery puncture test equipment according to claim 5, characterized in that: An adjusting assembly is provided between the sleeve, the clamping seat and the machine body; when the cover shell descends and the two clamping seats are closed toward the middle, the clamping seat and the telescopic assembly can be driven to descend synchronously through the adjusting assembly.

7. The flame retardant device for lithium battery puncture test equipment according to claim 6, characterized in that: The adjustment assembly includes a second spring fixedly connected to the sleeve, a bottom plate fixedly connected to the clamp seat, and a top plate fixedly mounted on the bottom wall of the body, the top of the top plate abutting against the bottom of the bottom plate; When the cover shell descends and the two clamping seats are closed toward the middle, the bottom plate can be moved to be staggered with the top plate.

8. The flame retardant device for lithium battery puncture test equipment according to claim 7, characterized in that: The second spring is located below the sleeve, and the second spring is arranged inside the vertical slot.

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