Lithium ion battery acupuncture detection device

Abstract

The utility model provides a lithium ion battery acupuncture detection device. The lithium ion battery acupuncture detection device comprises an acupuncture assembly, a fixing assembly and an elastic assembly, a fixing assembly is arranged on the needling assembly, an elastic assembly is arranged in the fixing assembly, a plurality of air plug telescopic rods are arranged on the fixing assembly, and the air plug telescopic rods can move under the action of external force and the elastic assembly. Through mutual cooperation of the needling assembly, the fixing assembly, the air plug telescopic rod and the elastic assembly, the air plug telescopic rod can move under the action of external force and the elastic assembly, and the lithium ion battery is limited, fixed and unfixed.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery detection, in particular to a lithium ion battery needle puncture detection device. Background Art

[0002] Lithium battery is a battery with lithium ions as working ions, commonly used in mobile electronic devices, power tools, electric vehicles and other fields; it has the advantages of high energy density, light weight, long service life, stable capacity, etc., and is widely used in modern electronic technology and new energy fields. Generally, lithium-ion batteries will be subjected to various safety performance tests through a variety of testing equipment before being put into use, such as needle penetration test. The needle penetration test equipment is a destructive test equipment for batteries, which is suitable for various battery-level simulations of the situation where the battery is subjected to needle penetration (such as compacted garbage) when processing household waste.

[0003] A comparative document with announcement number CN215297602U discloses a lithium-ion battery puncture detection device, comprising tempered glass, a box door, a box body, a cooling and cleaning device, and a puncture positioning mechanism. A control box is fixed at one end of the box body, and a box door is rotatably connected at one end of the box body. A lock for fixed connection with the box body is fixed at one end of the box door. Tempered glass is embedded in the interior of the box door, and a universal wheel is rotatably provided at the bottom end of the box body. The utility model adopts a cooling and cleaning device. When a battery detected inside the puncture detection device catches fire, an external water pipe can be connected to the cooling and cleaning device, and water can be sprayed on the catching battery through the nozzle on the device, so that the catching battery can be effectively and quickly extinguished, and the influence of the puncture detection device on the fire can be reduced. Impurities in the water can be filtered out by the filter plate to prevent the impurities from clogging the drain pipe. The detection efficiency of the detection device on the battery can also be accelerated, and it is more convenient to use.

[0004] The comparative document uses a pressure plate to limit and fix the lithium-ion battery. When the operator is testing the lithium-ion battery or disassembling and assembling the lithium-ion battery, the position of the pressure plate needs to be adjusted by a locking sleeve and a fixing rod to complete the limit fixation of the lithium-ion battery or release the fixed state. The operation is relatively complicated, which increases the difficulty of the operator, thereby affecting the inspection efficiency of the staff and has certain limitations. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to quickly limit and fix a lithium-ion battery and release the fixation.

[0006] The utility model solves the above technical problems through the following technical means:

[0007] A lithium-ion battery needle puncture detection device comprises a needle puncture component (3), a fixing component (4), and an elastic component (5); the needle puncture component (3) is provided with a fixing component (4), the fixing component (4) is provided with an elastic component (5), and the fixing component (4) is provided with a plurality of gas plug telescopic rods, and the gas plug telescopic rods can move under the action of an external force and the elastic component (5).

[0008] Beneficial effect: Through the mutual cooperation of the puncture component, the fixing component, the gas plug telescopic rod and the elastic component, the gas plug telescopic rod can move under the action of external force and the elastic component to limit and fix the lithium-ion battery.

[0009] Furthermore, the fixing component (4) includes an installation cabinet (401), a movable plate (402), and an air plug telescopic rod. The interior of the installation cabinet (401) is hollow to form a sealed space. The interior of the installation cabinet (401) is connected to the movable plate (402) in a sliding manner along the Z axis. A plurality of air plug telescopic rods are fixedly connected to the bottom wall of the installation cabinet (401). The elastic component (5) can adjust the position of the movable plate (402).

[0010] Beneficial effect: Through the cooperation of the installation cabinet, the movable plate and the air plug telescopic rod, the interior of the installation cabinet is a sealed space. When the air plug telescopic rod moves upward, the air pressure in the installation cabinet changes, so that the movable plate moves upward to limit and fix the lithium-ion battery. After the detection is completed, the elastic component can drive the air plug telescopic rod to move downward to release the lithium-ion battery.

[0011] Furthermore, the gas plug telescopic rod comprises a mounting sleeve (403), a movable block (404), and a limiting rod (405); the mounting sleeve (403) is fixed on the bottom wall of the mounting cabinet (401); the mounting sleeve (403) is slidably connected to the inside of the mounting sleeve (403); and the bottom of the movable block (404) is fixedly connected to the limiting rod (405).

[0012] Furthermore, a plurality of elastic components (5) are provided, and the elastic components (5) include a telescopic rod (501) and a first spring (502), wherein the first spring (502) is sleeved on the telescopic rod (501), one end of the telescopic rod (501) and the first spring (502) are both fixedly connected to the installation cabinet (401), and the other ends of the first spring (502) and the telescopic rod (501) are both fixedly connected to the movable plate (402).

[0013] Beneficial effect: by setting the telescopic rod and the first spring, when the electric push rod contracts and drives the mounting plate to move away from the placement rack, the movable plate automatically moves away from the mounting plate inside the mounting cabinet under the elastic force of the first spring, so that all the limit rods can automatically extend out of the mounting sleeve until they return to their original positions, which is convenient for limiting and fixing the lithium-ion battery to be tested next time.

[0014] Furthermore, the acupuncture assembly (3) includes an electric push rod (301), a mounting plate (302), and a puncture needle (303); one end of the electric push rod (301) close to the fixed assembly (4) is fixedly connected to the mounting plate (302); the middle part of the bottom wall of the mounting plate (302) is fixedly connected to the puncture needle (303); and the fixing assembly (4) is fixedly fixed to the periphery of the bottom wall of the mounting plate (302).

[0015] Furthermore, it also includes an air filling component (6), the air filling component (6) includes a regulating cabinet (601), an exhaust pipe (602), an air intake pipe (603), and an air filling component (604), the regulating cabinet (601) is fixedly connected to the upper surface of the mounting plate (302), the regulating cabinet (601) is hollow, the exhaust pipe (602) and the air intake pipe (603) are fixedly connected through the side wall of the regulating cabinet (601), the regulating cabinet (601) is connected to the cavity inside the mounting cabinet (401) through the exhaust pipe (602), the exhaust pipe (602) and the air intake pipe (603) are both installed with a one-way valve (6021), the regulating cabinet (601) is provided with an air filling component (604), and the air filling component (604) can add air to the cavity inside the mounting cabinet (401).

[0016] Furthermore, the gas filling component (604) includes a pushing plate (6041), a pulling rod (6042), and a second spring (6043); the pushing plate (6041) is slidably connected to the inside of the regulating cabinet (601); the pulling rod (6042) is fixedly connected to the pushing plate (6041); the pulling rod (6042) extends through the regulating cabinet (601) and is slidably connected to the regulating cabinet (601); the second spring (6043) is sleeved on the pulling rod (6042) located in the regulating cabinet (601); one end of the second spring (6043) is fixed to the regulating cabinet (601); and the other end of the second spring (6043) is fixed to the pushing plate (6041).

[0017] Beneficial effect: By setting up the regulating cabinet, exhaust duct, air intake duct, push plate, pull rod and second spring, it is convenient for the operator to replenish gas in the cavity inside the installation cabinet, thereby ensuring that the movable plate can drive all movable blocks and limit rods, thereby ensuring the stability of the detection device.

[0018] Furthermore, it also includes a detection cabinet (1) and a placement rack (7), wherein the detection cabinet (1) is hollow with an opening in the side wall, an acupuncture component (3) is fixed on the top of the detection cabinet (1), a fixing component (4) is fixed on the bottom of the acupuncture component (3), an elastic component (5) is fixed inside the fixing component (4), and a placement rack (7) is fixed on the bottom of the detection cabinet (1), and the placement rack (7) is located below the acupuncture component (3).

[0019] Furthermore, it also comprises a sealed cabinet door (2), and the sealed cabinet door (2) is rotatably connected to the opening of the detection cabinet (1).

[0020] Furthermore, a fire extinguishing assembly (8) is fixed to the side wall of the detection cabinet (1) near the placement rack (7), and the fire extinguishing assembly (8) includes a support plate (801), a fire extinguisher (802), a delivery pipe (803), a ventilator (804), and a fire extinguishing pipe (805). The support plate (801) is fixedly connected to the outside of the detection cabinet (1), the fire extinguisher (802) is placed on the support plate (801), and the ventilator (804) is fixedly connected to the outside of the detection cabinet (1). On the inner side of the detection cabinet (1), the vent cylinder (804) is fixedly connected to a delivery pipe (803), one end of the delivery pipe (803) away from the vent cylinder (804) is detachably connected to the air outlet end of the fire extinguisher (802), the vent cylinder (804) is fixedly connected to a plurality of fire extinguishing pipes (805), and the fire extinguisher (802) is interconnected with all the fire extinguishing pipes (805) through the delivery pipe (803) and the vent cylinder (804).

[0021] Beneficial effect: by arranging the support plate, fire extinguisher, delivery pipe, ventilator and fire extinguishing pipeline, when the operator punctures the lithium-ion battery through the puncture assembly, if the lithium-ion battery catches fire, the operator adjusts the valve on the surface of the fire extinguisher so that the fire extinguishing agent stored in the fire extinguisher can enter the fire extinguishing pipeline through the delivery pipe and the ventilator, and extinguish the fire of the lithium-ion battery placed in the placement rack through the fire extinguishing pipeline.

[0022] The advantages of the utility model are:

[0023] The utility model cooperates with each other among the acupuncture component, the fixing component, the air plug telescopic rod and the elastic component, so that the air plug telescopic rod can move under the action of external force and the elastic component to limit and fix or release the lithium ion battery.

[0024] The utility model realizes the mutual cooperation of the installation cabinet, the movable plate and the air plug telescopic rod. The interior of the installation cabinet is a sealed space. When the air plug telescopic rod moves upward, the air pressure in the installation cabinet changes, so that the movable plate moves upward to limit and fix the lithium-ion battery. After the detection is completed, the elastic component can drive the air plug telescopic rod to move downward to release the lithium-ion battery.

[0025] The utility model provides a telescopic rod and a first spring, when the electric push rod is contracted to drive the mounting plate to move away from the placement rack, the movable plate automatically moves away from the mounting plate inside the mounting cabinet under the elastic force of the first spring, so that all the limit rods can automatically extend out of the mounting sleeve until they return to their original positions, so as to facilitate the limit fixation of the lithium-ion battery to be tested next time.

[0026] The utility model provides an adjustment cabinet, an exhaust duct, an intake duct, a push plate, a pulling rod and a second spring, so that an operator can replenish gas in the cavity inside the installation cabinet, thereby ensuring that the movable plate can drive all movable blocks and limit rods, thereby ensuring the stability of the detection device.

[0027] The utility model is provided with a support plate, a fire extinguisher, a delivery pipe, a ventilator and a fire extinguishing pipeline. After the operator punctures the lithium-ion battery through the puncture assembly, if the lithium-ion battery catches fire, the operator adjusts the valve on the surface of the fire extinguisher so that the fire extinguishing agent stored in the fire extinguisher can enter the fire extinguishing pipeline through the delivery pipe and the ventilator, and extinguishes the lithium-ion battery placed in the placement rack through the fire extinguishing pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional diagram of a lithium-ion battery puncture detection device according to a first embodiment of the utility model;

[0029] Figure 2 This is a three-dimensional view of the lithium-ion battery puncture detection device according to the first embodiment of the utility model from another perspective;

[0030] Figure 3 This is an assembly diagram of the puncture component, the fixing component, the elastic component, and the gas filling component in the lithium-ion battery puncture detection device of the first embodiment of the utility model;

[0031] Figure 4 This is an assembly diagram of the sleeve, the movable block and the limit rod installed in the lithium-ion battery puncture detection device of the first embodiment of the utility model;

[0032] Figure 5 for Figure 3 A magnified view of middle;

[0033] Figure 6 This is a schematic diagram of the interior of the gas filling assembly in the lithium-ion battery puncture detection device according to the first embodiment of the present utility model. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Embodiment 1

[0036] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides a lithium-ion battery puncture detection device, including a detection cabinet 1, a sealed cabinet door 2, a puncture assembly 3, a fixing assembly 4, an elastic assembly 5, an aeration assembly 6, a placement rack 7, and a fire extinguishing assembly 8.

[0037] like Figure 1 , Figure 2 , Figure 3 As shown, the detection cabinet 1 is hollow with an opening in the side wall, a sealed cabinet door 2 is rotatably connected to the opening of the detection cabinet 1, a puncture component 3 is fixed to the top of the detection cabinet 1, a fixing component 4 is fixed to the bottom of the puncture component 3, an elastic component 5 is fixed inside the fixing component 4, a gas filling component 6 is fixed to the top of the puncture component 3, and the gas filling component 6 is connected to the fixing component 4; a placement rack 7 is fixed to the bottom of the detection cabinet 1, and a fire extinguishing component 8 is fixed to the side wall of the detection cabinet 1 near the placement rack 7.

[0038] like Figure 1 , Figure 2 , Figure 3 As shown, the acupuncture assembly 3 includes an electric push rod 301, a mounting plate 302, and a puncture needle 303. The electric push rod 301 is fixed on the top wall inside the detection cabinet 1, the free end of the electric push rod 301 is fixedly connected to the mounting plate 302, and the middle part of the bottom wall of the mounting plate 302 is fixedly connected to the puncture needle 303.

[0039] like Figure 3 , Figure 4As shown, the fixing assembly 4 includes a mounting cabinet 401, a movable plate 402, and an air plug telescopic rod, the air plug telescopic rod includes a mounting sleeve 403, a movable block 404, and a limiting rod 405, the mounting cabinet 401 is fixedly connected to the periphery of the bottom wall of the mounting plate 302, the interior of the mounting cabinet 401 is hollow to form a sealed space, the interior of the mounting cabinet 401 is slidably connected with the movable plate 402 along the Z axis, a plurality of mounting sleeves 403 are fixedly connected through the bottom wall of the mounting cabinet 401, the interior of the mounting sleeve 403 is slidably connected with the movable block 404, the bottom of the movable block 404 is fixedly connected with the limiting rod 405, and the cross-sectional shape of the movable block 404 and the limiting rod 405 is set to be T-shaped; the limiting rod 405 can follow the movable block 404 to move up and down inside the mounting sleeve 403, thereby driving the movable plate 402 to move;

[0040] like Figure 3 , Figure 5 As shown, the elastic component 5 is arranged inside the installation cabinet 401, and the elastic component 5 can adjust the position of the movable plate 402; there are multiple elastic components 5, and the elastic component 5 includes a telescopic rod 501 and a first spring 502, and the first spring 502 is sleeved on the telescopic rod 501, and one end of the telescopic rod 501 and the first spring 502 are fixedly connected to the installation cabinet 401, and the other end of the first spring 502 and the telescopic rod 501 are fixedly connected to the movable plate 402; by setting the telescopic rod 501 and the first spring 502, when the electric push rod 301 is contracted and drives the installation plate 302 to move away from the placement rack 7, under the elastic force of the first spring 502, the movable plate 402 automatically moves away from the installation plate 302 inside the installation cabinet 401, so that all the limit rods 405 can automatically extend out of the installation sleeve 403 until they return to their original position, which is convenient for limiting and fixing the lithium-ion battery to be tested next time.

[0041] like Figure 2 As shown, when the detection device causes air leakage inside the installation cabinet 401 during long-term use, causing the air pressure inside the installation cabinet 401 to change, the operator can adjust the air pressure inside the installation cabinet 401 through the air filling component 6;

[0042] like Figure 2 , Figure 3 , Figure 6As shown, the gas filling assembly 6 includes a regulating cabinet 601, an exhaust pipe 602, an intake pipe 603, and a gas filling component 604; the regulating cabinet 601 is fixedly connected to the upper surface of the mounting plate 302, the regulating cabinet 601 is hollow, and the exhaust pipe 602 and the intake pipe 603 are fixedly connected through the side wall of the regulating cabinet 601. The regulating cabinet 601 is connected to the cavity inside the mounting cabinet 401 through the exhaust pipe 602, and the surfaces of the exhaust pipe 602 and the intake pipe 603 are both installed with one-way Valve 6021; A gas filling component 604 is arranged inside the regulating cabinet 601, and the gas filling component 604 includes a push plate 6041, a pull rod 6042, and a second spring 6043. The push plate 6041 is slidably connected to the inside of the regulating cabinet 601, and a pull rod 6042 is fixedly connected to the push plate 6041. The pull rod 6042 extends through the regulating cabinet 601 and is slidably connected to the regulating cabinet 601. The second spring 6043 is sleeved on the pull rod 6042 located in the regulating cabinet 601 , one end of the second spring 6043 is fixed on the regulating cabinet 601, and the other end of the second spring 6043 is fixed on the push plate 6041; the surfaces of the movable plate 402, the movable block 404 and the push plate 6041 are all provided with sealing pads; by setting the regulating cabinet 601, the exhaust duct 602, the intake duct 603, the push plate 6041, the pulling rod 6042 and the second spring 6043, it is convenient for the operator to replenish the gas in the cavity inside the installation cabinet 401, thereby ensuring that the movable plate 40 2 can drive all the movable blocks 404 and the limit rods 405 to ensure the stability of the detection device; when the air pressure inside the installation cabinet 401 changes, the operator can pull the pulling rod 6042, and the pulling rod 6042 drives the pushing plate 6041 to reciprocate inside the regulating cabinet 601. Since the surfaces of the exhaust pipe 602 and the intake pipe 603 are both provided with a one-way valve 6021, the regulating cabinet 601 can perform air filling treatment on the cavity inside the installation cabinet 401.

[0043] like Figure 1 As shown, a placement rack 7 is fixedly connected to the bottom of the interior of the detection cabinet 1 , and the placement rack 7 is located below the acupuncture assembly 3 .

[0044] like Figure 1 , Figure 2As shown, the fire extinguishing assembly 8 includes a support plate 801, a fire extinguisher 802, a delivery pipe 803, a ventilator 804, and a fire extinguishing pipeline 805. The support plate 801 is fixedly connected to the outer side of the detection cabinet 1, and the fire extinguisher 802 is placed on the support plate 801. The fire extinguisher 802 is a carbon dioxide fire extinguisher. The ventilator 804 is fixedly connected to the inner side of the detection cabinet 1. The delivery pipe 803 is fixedly connected to the ventilator 804. One end of the delivery pipe 803 away from the ventilator 804 is detachably connected to the air outlet end of the fire extinguisher 802. The ventilator 804 is fixedly connected to a plurality of fire extinguishing pipelines 805. The fire extinguisher 802 is connected to all the fire extinguishing pipelines 805 through the delivery pipe 803 and the ventilator 804. By setting the support plate 801, the fire extinguisher 802 is placed on the support plate 801. The fire extinguisher 802 is a carbon dioxide fire extinguisher. The ventilator 804 is fixedly connected to the inner side of the detection cabinet 1. The delivery pipe 803 is fixedly connected to the ventilator 804. The end of the delivery pipe 803 away from the ventilator 804 is detachably connected to the air outlet end of the fire extinguisher 802. The support plate 801, the fire extinguisher 802, the delivery pipe 803, the vent 804 and the fire extinguishing pipe 805 are arranged. When the operator punctures the lithium-ion battery through the puncture assembly 3, if the lithium-ion battery catches fire, the operator adjusts the valve on the surface of the fire extinguisher 802 so that the carbon dioxide stored in the fire extinguisher 802 can enter the fire extinguishing pipe 805 through the delivery pipe 803 and the vent 804, and extinguish the lithium-ion battery placed in the placement rack 7 through the fire extinguishing pipe 805. Extinguishing the lithium-ion battery with carbon dioxide instead of water can avoid chemical reactions between the lithium-ion battery and water, thereby avoiding the explosion of the battery, thereby improving the safety of the detection device.

[0045] During use, the operator directly places the lithium-ion battery on the placement rack 7, and the electric push rod 301 extends to push the mounting plate 302 and the puncture needle 303 to move closer to the placement rack 7. The limiting rod 405 first contacts the lithium-ion battery placed on the surface of the placement rack 7, and the limiting rod 405 in contact with the lithium-ion battery moves into the installation sleeve 403. The remaining limiting rods 405 are located around the lithium-ion battery to limit the lithium-ion battery. As the electric push rod 301 continues to extend, the puncture needle 303 performs a needle puncture test on the fixed lithium-ion battery; because the interior of the installation cabinet 401 is interconnected to form a sealed space, when the corresponding limiting rod 405 contacts the battery and shrinks into the installation sleeve 403, the air pressure inside the sealed space will change, which will cause the movable plate 402 to move away from the installation sleeve 403 inside the installation cabinet 401. During the movement, the movable plate 402 will squeeze the first spring 502. When the test is over, the battery is released. When limiting, the first spring 502 will also assist in pushing the movable plate 402 to return to its original position. Under the action of the air pressure inside the sealed space, all the limiting rods 405 will extend out of 403. 402 is pushed by 502, not just by the gravity of 405 itself, in order to ensure that all 405 can fully extend out of the installation sleeve 403, so as to ensure that the battery can be tested normally in the later stage; because the inside of the sealed space is sealed by a sealing gasket, it is inevitable to leak during long-term use, thereby causing the air pressure inside the sealed space to change, and the air pressure inside the sealed space can be regulated by the gas filling component 6; when the puncture needle 303 punctures the lithium-ion battery, if the lithium-ion battery catches fire, the operator adjusts the valve on the surface of the fire extinguisher 802, so that the carbon dioxide stored in the fire extinguisher 802 can enter the inside of the fire extinguishing pipe 805 through the delivery pipe 803 and the ventilator 804, and the lithium-ion battery placed inside the placement rack 7 is extinguished through the fire extinguishing pipe 805.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lithium-ion battery puncture detection device, characterized in that: It comprises a needling component (3), a fixing component (4), and an elastic component (5); The acupuncture assembly (3) is provided with a fixing assembly (4), an elastic assembly (5) is provided inside the fixing assembly (4), and a plurality of air plug telescopic rods are provided on the fixing assembly (4), and the air plug telescopic rods can move under the action of external force and the elastic assembly (5).

2. A lithium-ion battery puncture detection device according to claim 1, characterized in that: The fixing component (4) comprises an installation cabinet (401), a movable plate (402), and an air plug telescopic rod. The interior of the installation cabinet (401) is hollow to form a sealed space. The interior of the installation cabinet (401) is connected with a movable plate (402) in a sliding manner along the Z axis. A plurality of air plug telescopic rods are fixedly connected to the bottom wall of the installation cabinet (401). The elastic component (5) is capable of adjusting the position of the movable plate (402).

3. A lithium-ion battery puncture detection device according to claim 2, characterized in that: The gas plug telescopic rod comprises a mounting sleeve (403), a movable block (404), and a limiting rod (405); the mounting sleeve (403) is fixed on the bottom wall of the mounting cabinet (401); the mounting sleeve (403) is slidably connected to the inside of the mounting sleeve (403); and the bottom of the movable block (404) is fixedly connected to the limiting rod (405).

4. A lithium-ion battery puncture detection device according to claim 2, characterized in that: The elastic force components (5) are provided in plurality, and the elastic force components (5) include a telescopic rod (501) and a first spring (502), wherein the first spring (502) is sleeved on the telescopic rod (501), one end of the telescopic rod (501) and the first spring (502) are both fixedly connected to the installation cabinet (401), and the other ends of the first spring (502) and the telescopic rod (501) are both fixedly connected to the movable plate (402).

5. A lithium-ion battery puncture detection device according to claim 1, characterized in that: The acupuncture assembly (3) comprises an electric push rod (301), a mounting plate (302), and a puncture needle (303); one end of the electric push rod (301) close to the fixing assembly (4) is fixedly connected to the mounting plate (302); the middle part of the bottom wall of the mounting plate (302) is fixedly connected to the puncture needle (303); and the fixing assembly (4) is fixedly fixed to the periphery of the bottom wall of the mounting plate (302).

6. A lithium-ion battery puncture detection device according to claim 2, characterized in that: The invention also comprises an air filling component (6), wherein the air filling component (6) comprises an adjusting cabinet (601), an exhaust pipe (602), an intake pipe (603), and an air filling component (604). The adjusting cabinet (601) is fixedly connected to the upper surface of the mounting plate (302). The adjusting cabinet (601) is hollow. The exhaust pipe (602) and the intake pipe (603) are fixedly connected through the side wall of the adjusting cabinet (601). The adjusting cabinet (601) is connected to the cavity inside the mounting cabinet (401) through the exhaust pipe (602). Both the exhaust pipe (602) and the intake pipe (603) are installed with a one-way valve (6021). The adjusting cabinet (601) is provided with an air filling component (604) inside. The air filling component (604) can fill air into the cavity inside the mounting cabinet (401).

7. A lithium-ion battery puncture detection device according to claim 6, characterized in that: The gas filling component (604) includes a pushing plate (6041), a pulling rod (6042), and a second spring (6043). The pushing plate (6041) is slidably connected to the inside of the regulating cabinet (601). The pulling rod (6042) is fixedly connected to the pushing plate (6041). The pulling rod (6042) extends through the regulating cabinet (601) and is slidably connected to the regulating cabinet (601). The second spring (6043) is sleeved on the pulling rod (6042) located in the regulating cabinet (601). One end of the second spring (6043) is fixed to the regulating cabinet (601), and the other end of the second spring (6043) is fixed to the pushing plate (6041).

8. A lithium-ion battery puncture detection device according to claim 1, characterized in that: The invention also comprises a detection cabinet (1) and a placement rack (7); the detection cabinet (1) is hollow with an opening in the side wall; a needling assembly (3) is fixed on the top of the detection cabinet (1); a fixing assembly (4) is fixed on the bottom of the needling assembly (3); an elastic assembly (5) is fixed inside the fixing assembly (4); a placement rack (7) is fixed on the bottom of the detection cabinet (1); and the placement rack (7) is located below the needling assembly (3).

9. A lithium-ion battery puncture detection device according to claim 8, characterized in that: It also comprises a sealed cabinet door (2), and the sealed cabinet door (2) is rotatably connected to the opening of the detection cabinet (1).

10. A lithium-ion battery puncture detection device according to claim 8, characterized in that: A fire extinguishing assembly (8) is fixed to the side wall of the detection cabinet (1) near the placement rack (7), and the fire extinguishing assembly (8) comprises a support plate (801), a fire extinguisher (802), a delivery pipe (803), a ventilator (804), and a fire extinguishing pipeline (805). The support plate (801) is fixedly connected to the outside of the detection cabinet (1), the fire extinguisher (802) is placed on the support plate (801), and the ventilator (804) is fixedly connected to the detection cabinet (1). On the inner side of the cabinet (1), a delivery pipe (803) is fixedly connected to the vent cylinder (804), and one end of the delivery pipe (803) away from the vent cylinder (804) is detachably connected to the air outlet end of the fire extinguisher (802). A plurality of fire extinguishing pipes (805) are fixedly connected to the vent cylinder (804), and the fire extinguisher (802) is interconnected with all the fire extinguishing pipes (805) through the delivery pipe (803) and the vent cylinder (804).

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