Battery extrusion and collision testing device

Abstract

The utility model belongs to the field of battery testing, and particularly relates to a battery extrusion collision testing device which comprises a shell, a working table fixedly installed at the bottom of an inner cavity of the shell, a through groove formed in the working table, two baffles installed in the through groove in a sliding mode, a U-shaped frame fixedly installed at the top of the working table, and a hydraulic cylinder fixedly installed on the U-shaped frame. When the whole device is used, it is ensured that parts splashing in the battery pack in the combustion and explosion process are blocked, fire extinguishing is rapidly conducted on the combusted battery pack, the safety of personnel is guaranteed, fine sand can be repeatedly used, and the device is convenient to use, low in cost and high in practicability. The fire extinguishing device is simple in structure and convenient to use, the fine sand can be repeatedly used for extinguishing fire of the combusted battery pack when a plurality of groups of batteries are subjected to an extrusion collision test, so that additional economic expenditure is reduced, smoke generated in the combustion and explosion process of the battery pack is filtered out, and damage to the body health of personnel is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery test field especially relates to a battery extrusion collision test device. BACKGROUND

[0002] Battery is a kind of device that converts chemical energy into electric energy, is widely used in various electronic equipment, vehicles and energy storage systems, and the starting or work of current large equipment such as automobile is battery to provide electric energy, if the equipment is used in relatively harsh environment, for example, collision, extrusion or impact often occurs, resulting in battery damage and leakage under extrusion or impact, so battery needs to be tested.

[0003] For example, the Chinese patent with publication number CN221765613U discloses a battery pack collision detection device. Its technical scheme includes: frame, top plate and extrusion block, the inner wall of the frame is provided with heat conducting piece, and the inner wall of the heat conducting piece is provided with electric heating tube; the top end face of the top plate is provided with guide frame two and driving motor; the top end face of the extrusion block is welded with sliding groove plate, and the sliding groove plate is sleeved with counterweight block; the outer surface of the extrusion block is welded with connecting block at both ends; the output shaft of the driving motor is provided with unwinding wheel, the bottom end face of the frame is welded with fixed plate, and the bottom end face of the fixed plate is welded with bearing base, the bottom end face of the top plate is welded with mounting block, and the bottom end face of the mounting block is welded on the frame, and the top end face of the extrusion block is welded with guide frame one. The utility model satisfies battery pack detection, and can be adjusted according to actual collision weight during detection, and can be simulated according to actual battery pack use environment.

[0004] The above patent has the following problems:

[0005] The above device has some shortcomings when used, for example: when the battery pack is extruded and collided, the structure inside the battery pack changes as the extrusion force increases, resulting in rapid temperature rise and a large amount of heat, and the battery pack may burn or even explode, and the internal parts may splash out during the burning and explosion process, which may cause great harm to personnel, and the smoke produced during the burning and explosion process is easy to choke personnel and cause damage to personnel's health, and the battery pack usually needs to be extinguished with a fire extinguisher when burning, and when personnel perform multiple battery extrusion collision tests, the use frequency of fire extinguisher increases, resulting in consumption of a large amount of fire extinguisher and easy to cause additional economic expenditure. In view of this, we propose a battery extrusion collision test device. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a battery extrusion collision test device to solve the problems in the above background.

[0007] Therefore, the utility model provides a battery extrusion collision test device, including the cavity bottom of casing fixed mounting has work table, the work table is equipped with the through slot, two baffle are installed in the through slot, the top of work table is fixedly installed with U shape frame, the U shape frame is fixedly installed with hydraulic cylinder, the output end of hydraulic cylinder is fixedly installed with pressure sensor, the bottom of pressure sensor is fixedly installed with the sliding plate of U shape frame sliding connection, the bottom of sliding plate is fixedly installed with transparent fireproof glass fiber cloth and counterweight, and the counterweight is located in the transparent fireproof glass fiber cloth, the bottom of transparent fireproof glass fiber cloth is fixedly installed with the pressure plate of U shape frame sliding connection, and the bottom of pressure plate is fixedly installed with magnet, the rear side of casing is equipped with the air outlet,

[0008] Drive assembly, drive assembly is located in the work table, and is used for driving two baffle to be close to each other or be away from each other;

[0009] Filter box, the filter box is fixedly installed at the rear side of casing and is communicated with the air outlet, and the filter box is fixedly installed with activated carbon filter screen, and the filter box is fixedly installed with the exhaust fan on one side;

[0010] Explosion -proof box, the explosion -proof box is fixedly installed at the bottom of casing;

[0011] Two sand storage tanks, two sand storage tanks are fixedly installed at the left and right sides of casing, and the bottom of two sand storage tanks is fixedly installed with sand discharge pipe, and the tail end of two sand discharge pipes is respectively through the left and right sides of explosion -proof box;

[0012] Cabinet door, the cabinet door is rotatably installed at the export position of casing.

[0013] In the technical scheme, when the battery pack needs to be extruded and collided, the staff pours fine sand into the sand storage tank through the feeding port, then opens the cabinet door, places the battery pack on the two baffle in the through slot, closes the cabinet door, connects the hydraulic cylinder to the power supply and starts, the output shaft of the hydraulic cylinder drives the pressure sensor to descend, the pressure sensor drives the sliding plate to descend in the U-shaped frame, the sliding plate drives the counterweight and the transparent fireproof glass fiber cloth to descend, the transparent fireproof glass fiber cloth drives the pressure plate and the magnet at the bottom of the pressure plate to descend in the U-shaped frame, under the action of the magnetic force of the magnet, the magnet and the top of the workbench are attracted to each other and attached, at the same time, under the action of the pressure, the sliding plate extrudes the transparent fireproof glass fiber cloth, which is deformed and folded under the action of the extrusion force, at the same time, the counterweight moves downward and extrudes the battery pack below, the staff observes the deformation of the battery and the pressure value detected by the pressure sensor and records the data by naked eye;

[0014] When the battery pack is damaged, burned or even exploded in the extrusion collision of the counterweight, at this time, the battery pack will produce smoke and splash during the burning and explosion process, the splashed parts inside the battery pack will be blocked inside the transparent fireproof fiberglass cloth, avoiding the splashed parts from splashing to the workers, then the driving assembly is started, the driving assembly drives the two baffles away from each other, at this time, the burning and exploding battery pack will fall into the explosion-proof box through the through slot under the action of gravity, then the fine sand in the sand storage tank flows into the explosion-proof box through the sand discharge pipe, and a large amount of fine sand quickly buries the burning battery pack in the collection box, so as to isolate the burning battery pack from the air, thereby extinguishing the burning battery pack, ensuring that the above operation can block the internal splashed parts of the battery pack during the burning and explosion process, and can quickly extinguish the burning battery pack, ensuring the safety of the personnel;

[0015] At the same time, the smoke produced by the battery pack during the burning and explosion process will pass through the transparent fireproof fiberglass cloth and spread to the entire shell, at this time, the worker will connect the air extractor to the power supply and start it, under the action of the air extractor, negative pressure is generated in the shell, under the action of air pressure, external air is sucked into the shell through the ventilation opening of the shell, then, the smoke produced by the battery pack during the burning process will be sucked into the filter box along with the air through the exhaust port, the smoke produced by the battery pack during the burning process will be purified by the activated carbon filter screen in the filter box and sucked into the air extractor, and then discharged to the outside through the air extractor, ensuring that the smoke produced by the battery pack during the burning and explosion process will be filtered out, so as to not cause damage to the health of the personnel, wherein the fine sand can be reused, ensuring that the fine sand can be repeatedly used to extinguish the burning battery pack when multiple battery extrusion collision tests are performed, thereby reducing additional economic expenditure.

[0016] In the above technical solution, further, the driving assembly comprises:

[0017] A sliding groove is arranged in the workbench and is in communication with the through slot, a two-way threaded rod is rotatably installed in the sliding groove and located at the rear side of the through slot, two connecting blocks are slidably installed in the sliding groove and located on the two-way threaded rod, the two connecting blocks are tightly welded to the two baffles respectively, a motor is fixedly installed on the right side of the shell, and the output shaft of the motor extends into the sliding groove through the right side of the shell and one side of the workbench and is coaxially connected with the two-way threaded rod.

[0018] In the present technical solution, the motor is connected to the power supply and started, the output shaft of the motor rotates to drive the two-way threaded rod to rotate, under the action of the thread, the two-way threaded rod drives the two connecting blocks to move away from each other in the sliding groove, the two connecting blocks drive the two baffles to move away from each other, at this time, the burning and exploding battery pack will fall into the collection box in the explosion-proof box through the through slot under the action of gravity.

[0019] Further, the bidirectional threaded rod is threadedly connected with the two connecting blocks, and the output shaft of the motor is rotationally connected with the shell and the workbench.

[0020] In the technical solution, the rotation of the bidirectional threaded rod can drive the two connecting blocks to move closer to or farther away from each other, and the motor can operate normally.

[0021] Further, the technical solution further comprises:

[0022] The collecting box is slidably installed in the explosion-proof box and located below the tail end of the sand discharge pipe.

[0023] The two plug plates are respectively plug-in installed at the positions of the discharge ports of the two sand storage boxes.

[0024] In the technical solution, when the burning and exploding battery pack falls into the collecting box in the explosion-proof box, the plug plate is extracted, the fine sand in the sand storage box flows into the collecting box in the explosion-proof box through the sand pipe, and a large amount of fine sand quickly buries the burning battery pack in the collecting box, so that the burning battery pack is isolated from the air, thereby extinguishing the burning battery pack. In this process, a fire extinguisher is not needed, and the fine sand can be reused to extinguish the burning battery pack during multiple battery extrusion and collision tests, thereby reducing additional economic expenditure.

[0025] Further, the technical solution further comprises:

[0026] The two C-shaped baffles are respectively fixedly installed in the two ventilation openings of the shell, the circular plates are rotationally installed in the two ventilation openings of the shell, the circular plates are in contact with the C-shaped baffles, and the gravity blocks are fixedly installed on the sides of the circular plates away from the C-shaped baffles.

[0027] In the technical solution, the exhaust fan is connected to the power supply and started, under the action of the exhaust fan, the exhaust fan extracts the air in the filtering box, the air in the shell is sucked into the filtering box through the filtering box and the exhaust port, and the air is discharged to the outside through the exhaust fan. The shell generates a negative pressure under the action of the air pressure, the circular plates at the ventilation openings on both sides of the shell rotate around the shafts at both ends, so that the circular plates and the C-shaped baffles are not in a parallel and pasted state. Therefore, the air from the outside enters the ventilation openings of the shell through the gap between the circular plate and the C-shaped baffle and is then sucked into the shell. When the exhaust fan is not working, the pressure in the shell is consistent with the outside, and the gravity blocks on the circular plates slowly rotate around the shafts at both ends under the action of gravity, so that the circular plates and the C-shaped baffles are in a parallel and pasted state. At the same time, it is also ensured that the smoke generated by the battery pack during the burning process will not be discharged to the outside through the ventilation openings of the shell.

[0028] Further, the gravity blocks are located at the bottom of the circular plate, the two ends of the C-shaped baffle are lower than the height of the center of the circular plate, and the two gravity blocks are located between the two circular plates and the two C-shaped baffles.

[0029] In the technical solution, when the air extractor does not work, the pressure in the shell is consistent with the outside, the gravity blocks on the circular plate slowly rotate the circular plate with the two ends as the centers under the action of gravity, and the circular plate and the C-shaped baffle are in parallel and close to each other, so that the circular plate rotates with the two ends as the centers.

[0030] Further, the cabinet door is fixedly installed with a sealing gasket on the side close to the shell, the cabinet door is threadedly installed with a bolt, one end of the bolt extends into the shell through the cabinet door, the bolt is threadedly connected with the cabinet door and the shell, and the cabinet door is fixedly installed with a glass cover.

[0031] In the technical solution, the bolt is rotated, one end of the bolt is away from the shell under the action of the thread, so that the cabinet door is opened, the cabinet door is closed, the bolt is rotated in the opposite direction, one end of the bolt enters the shell under the action of the thread, the cabinet door and the shell are fixed, the sealing gasket on the cabinet door is tightly attached to the outlet of the shell, and the shell is in a sealed state.

[0032] Further, the shell, the workbench and the explosion-proof box are integrally formed, the filter box is connected with the air extractor, the inner cavity of the explosion-proof box is connected with the bottom of the shell and the through groove, and the filtering precision of the activated carbon filter screen is 0.1-0.5 mu m.

[0033] In the technical solution, the overall structure is stable, the smoke generated in the combustion process of the battery pack is purified by the activated carbon filter screen in the filter box, inhaled into the air extractor, and then discharged to the outside through the air extractor, the battery pack in combustion and explosion is dropped into the collecting box in the explosion-proof box through the through groove under the action of gravity, and the smoke generated in the combustion process of the battery pack can be filtered.

[0034] The beneficial effects of the utility model are as follows:

[0035] 1. The battery extrusion collision test device, by setting the cooperation between the transparent fireproof glass cloth, the baffle, the two-way threaded rod, the explosion-proof box, the collection box, the sand storage tank, the plug plate, the sand discharge pipe, the chute, the through slot and the connecting block, the parts inside the battery pack are blocked during the burning and explosion process, and the burning battery pack can be quickly extinguished, ensuring the safety of personnel, wherein the fine sand can be reused, ensuring that the fine sand can be repeatedly used to extinguish the burning battery pack when performing multiple battery extrusion collision tests, thereby reducing additional economic expenditure.

[0036] 2. The battery extrusion collision test device, by setting the cooperation between the filter box, the air extractor, the circular plate, the C-shaped baffle and the gravity block, the air extractor extracts the air in the shell and the smoke generated during the burning and explosion of the battery pack is filtered through the activated carbon filter plate in the filter box, so that the smoke generated during the burning and explosion of the battery pack is filtered and discharged to the outside, so as not to cause damage to the health of personnel. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 The overall structure of the utility model is shown Figure One ;

[0038] Figure 2 The overall structure of the utility model is shown Figure Two ;

[0039] Figure 3 The internal detailed structure of the shell in the utility model is shown in the schematic view.

[0040] Figure 4 The cross-sectional structure of the workbench in the utility model is shown in the schematic view.

[0041] Figure 5 The cross-sectional structure of the shell and the explosion-proof box in the utility model is shown in the schematic view.

[0042] Figure 6 The structure of the transparent fireproof glass cloth and the counterweight block in the utility model is shown in the schematic view.

[0043] Figure 7 The cross-sectional structure of the sand storage tank in the utility model is shown in the schematic view.

[0044] Figure 8 The structure of the circular plate and the C-shaped baffle in the utility model is shown in the schematic view.

[0045] Figure 9 The structure of the shell and the cabinet door in the utility model is shown in the schematic view.

[0046] The marks in the figure represent:

[0047] 1, housing; 2, workbench; 3, U-shaped frame; 4, transparent fireproof glass cloth; 5, counterweight; 6, sliding plate; 7, baffle; 8, two-way threaded rod; 9, pressure sensor; 10, hydraulic cylinder; 11, explosion-proof box; 12, collection box; 13, pressing plate; 14, sand storage tank; 15, plug plate; 16, sand discharge pipe; 17, filter box; 18, exhaust fan; 20, circular plate; 21, C-shaped baffle; 22, cabinet door; 23, motor; 24, sliding groove; 25, through groove; 26, connecting block. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0049] In the description of the present application, it should be noted that the terms used herein are only intended to describe the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but under appropriate circumstances, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0050] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally a class, and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents a "or" relationship between the front and rear associated objects.

[0051] It should be noted that in the description of the present application, the terms of orientation such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation terms "inner, outer" refer to the inner and outer of the profile of each component itself.

[0052] It should be noted that in the present application, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0053] Embodiment 1:

[0054] Please refer to Figures 1-9 The embodiment provides a battery extrusion impact test device, which comprises:

[0055] A housing 1, a workbench 2 is fixedly installed at the bottom of the inner cavity of the housing 1, a through slot 25 is formed in the workbench 2, two baffles 7 are slidably installed in the through slot 25, a U-shaped frame 3 is fixedly installed at the top of the workbench 2, a hydraulic cylinder 10 is fixedly installed on the U-shaped frame 3, a pressure sensor 9 is fixedly installed at the output end of the hydraulic cylinder 10, a sliding plate 6 slidably connected with the U-shaped frame 3 is fixedly installed at the bottom of the pressure sensor 9, a transparent fireproof glass cloth 4 and a counterweight 5 are fixedly installed at the bottom of the sliding plate 6, and the counterweight 5 is located in the transparent fireproof glass cloth 4, a pressing plate 13 slidably connected with the U-shaped frame 3 is fixedly installed at the bottom of the transparent fireproof glass cloth 4, and a magnet is fixedly installed at the bottom of the pressing plate 13, and an air outlet is formed in the rear side of the housing 1;

[0056] A driving assembly is located in the workbench 2 and is used for driving the two baffles 7 to move close to each other or move away from each other;

[0057] A filter box 17 is fixedly installed at the rear side of the shell 1 and communicates with the air outlet, and an activated carbon filter screen is fixedly installed in the filter box 17, and an air extractor 18 is fixedly installed on one side of the filter box 17;

[0058] An explosion-proof box 11 is fixedly installed at the bottom of the shell 1;

[0059] Two sand storage boxes 14 are fixedly installed at the left and right sides of the shell 1, and a sand discharge pipe 16 is fixedly installed at the bottom of each of the two sand storage boxes 14, and the tail ends of the two sand discharge pipes 16 respectively penetrate through the left and right sides of the explosion-proof box 11;

[0060] A cabinet door 22 is rotatably installed at the outlet position of the shell 1.

[0061] When the battery pack needs to be subjected to the extrusion and impact test, the staff pours fine sand into the sand storage box 14 through the feeding port of the sand storage box 14, then opens the cabinet door 22, places the battery pack on the two baffles 7 in the through slot 25, and then closes the cabinet door 22, connects the hydraulic cylinder 10 to the power supply and starts it, the output shaft of the hydraulic cylinder 10 drives the pressure sensor 9 to descend, the pressure sensor 9 drives the sliding plate 6 to descend in the U-shaped frame 3, the sliding plate 6 drives the counterweight block 5 and the transparent fireproof glass cloth 4 to descend, the transparent fireproof glass cloth 4 drives the pressing plate 13 and the magnet at the bottom of the pressing plate 13 to descend in the U-shaped frame 3, under the action of the magnetic force of the magnet, the magnet and the top of the workbench 2 are attracted to each other and are attached to each other, and under the action of the pressure, the sliding plate 6 extrudes the transparent fireproof glass cloth 4, so that the transparent fireproof glass cloth 4 is deformed and folded under the action of the extrusion force, and at the same time, the counterweight block 5 moves downward and extrudes the battery pack below, the staff observes the deformation of the battery by naked eye and records the pressure value detected by the pressure sensor 9;

[0062] When the battery pack is damaged, burns or even explodes in the extrusion and impact of the counterweight block 5, at this time, the battery pack will produce smoke and be accompanied by the spatter of the internal parts of the battery pack in the process of burning and exploding, the spattered parts of the battery pack will be blocked in the transparent fireproof glass cloth 4, avoiding the spattered parts from splashing to the staff, then the driving assembly is started, the driving assembly drives the two baffles 7 to move away from each other, at this time, the burning and exploding battery pack will fall into the explosion-proof box 11 through the through slot 25 under the action of gravity, then the fine sand in the sand storage box 14 flows into the explosion-proof box 11 through the sand discharge pipe 16, and a large amount of fine sand quickly buries the burning battery pack in the collection box 12, so as to isolate the burning battery pack from the air, thereby extinguishing the burning battery pack, and ensuring that the above operation blocks the internal spattered parts of the battery pack in the process of burning and exploding, and can quickly extinguish the burning battery pack, ensuring the safety of the staff;

[0063] Meanwhile, the smoke generated by the battery pack in the combustion and explosion process can pass through the transparent fireproof glass cloth 4 and spread throughout the shell 1. At this time, the staff will power on and start the exhaust fan 18. Under the action of the exhaust fan 18, a negative pressure is generated in the shell 1. Under the action of air pressure, external air is sucked into the shell 1 through the ventilation opening of the shell 1. Subsequently, the smoke generated by the battery pack in the combustion process is sucked into the filter box 17 along with the air through the exhaust opening. The smoke generated by the battery pack in the combustion process is purified by the activated carbon filter screen in the filter box 17 and is sucked into the exhaust fan 18. Then, the smoke is discharged to the outside through the exhaust fan 18. It is ensured that the smoke generated by the battery pack in the combustion and explosion process can be filtered out, so as not to cause damage to the health of the personnel. The fine sand can be reused. When multiple battery extrusion collision tests are performed, the fine sand can be repeatedly used to extinguish the burning battery pack, thereby reducing additional economic expenditure.

[0064] Embodiment 2:

[0065] The embodiment provides a battery extrusion collision test device. In addition to the technical solutions of the above-mentioned embodiments, the battery extrusion collision test device further has the following technical features. The driving assembly comprises:

[0066] The chute 24 is arranged in the workbench 2 and is in communication with the through groove 25. The bidirectional threaded rod 8 is rotatably arranged in the chute 24 and located at the rear side of the through groove 25. The two connecting blocks 26 are slidably arranged in the chute 24 and located on the bidirectional threaded rod 8. The two connecting blocks 26 are tightly welded to the two baffles 7, respectively. The motor 23 is fixedly arranged on the right side of the shell 1. The output shaft of the motor 23 extends to the chute 24 through the right side of the shell 1 and one side of the workbench 2 and is coaxially connected with the bidirectional threaded rod 8.

[0067] The motor 23 is powered on and started. The output shaft of the motor 23 drives the bidirectional threaded rod 8 to rotate. Under the action of the thread, the bidirectional threaded rod 8 drives the two connecting blocks 26 to move away from each other in the chute 24. The two connecting blocks 26 drive the two baffles 7 to move away from each other, respectively. At this time, the burning and exploding battery pack falls into the collecting box 12 in the explosion-proof box 11 through the through groove 25 under the action of gravity.

[0068] Embodiment 3:

[0069] The embodiment provides a battery extrusion collision test device. In addition to the technical solutions of the above-mentioned embodiments, the battery extrusion collision test device further has the following technical features. The bidirectional threaded rod 8 is threadedly connected with the two connecting blocks 26. The output shaft of the motor 23 is rotatably connected with the shell 1 and the workbench 2.

[0070] The bidirectional threaded rod 8 can drive the two connecting blocks 26 to move close to each other or move away from each other, and the motor 23 can normally operate.

[0071] Embodiment 4:

[0072] The embodiment provides a battery extrusion collision test device, in addition to comprising the technical scheme in the above embodiment, further has the following technical features, and further comprises:

[0073] The collecting box 12 is slidably installed in the explosion-proof box 11 and located below the tail end of the sand discharging pipe 16.

[0074] The two plug plates 15 are respectively plug-connected and installed at the positions of the discharge ports of the two sand storage boxes 14.

[0075] When the battery pack on fire and explosion falls into the collecting box 12 in the explosion-proof box 11, the worker extracts the plug plate 15, so that the fine sand in the sand storage box 14 flows into the collecting box 12 in the explosion-proof box 11 through the sand discharging pipe 16, and a large amount of fine sand quickly buries the battery pack on fire in the collecting box 12, so that the battery pack on fire is isolated from air, and the battery pack on fire is extinguished, and in the process, a fire extinguisher is not needed, wherein the fine sand can be repeatedly used, so that the fine sand can be repeatedly used to extinguish the battery pack on fire when a plurality of groups of battery extrusion collision tests are performed, and therefore, the additional economic expenditure is reduced.

[0076] Embodiment 5:

[0077] The embodiment provides a battery extrusion collision test device, in addition to comprising the technical scheme in the above embodiment, further has the following technical features, and further comprises:

[0078] The two C-shaped baffles 21 are respectively fixedly installed in the two ventilation openings of the shell 1, the circular plate 20 is rotatably installed in the two ventilation openings of the shell 1, the circular plate 20 is in contact with the C-shaped baffle 21, and the gravity block is fixedly installed on the side, away from the C-shaped baffle 21, of the circular plate 20.

[0079] Wherein, the exhaust fan 18 is powered on and started, under the action of the exhaust fan 18, the exhaust fan 18 extracts the air in the filter box 17, the air in the shell 1 is sucked into the filter box 17 through the filter box 17, and the air is discharged to the outside through the exhaust fan 18, so that the negative pressure is generated in the shell 1, under the action of the air pressure, the circular plate 20 at the ventilation port of the shell 1 rotates around the shaft at both ends as the center, so that the circular plate 20 and the C-shaped baffle 21 are not in parallel and pasted state, so that the air outside enters the ventilation port of the shell 1 through the gap between the circular plate 20 and the C-shaped baffle 21 and is sucked into the shell 1, when the exhaust fan 18 is not working, the pressure in the shell 1 is consistent with the outside, the gravity block on the circular plate 20 rotates slowly around the shaft at both ends as the center under the action of gravity, so that the circular plate 20 and the C-shaped baffle 21 are in parallel and pasted state, and it is also ensured that the smoke generated in the battery pack during the combustion process will not be discharged to the outside through the ventilation port of the shell 1.

[0080] Embodiment 6:

[0081] The embodiment provides a battery extrusion collision test device, in addition to comprising the technical scheme of the above-mentioned embodiment, further having the following technical features, the gravity block is located at the bottom position close to the circular plate 20, the height of the two ends of the C-shaped baffle 21 is lower than the center of the circular plate 20, the two gravity blocks are located between the two circular plates 20, and the two circular plates 20 are located between the two C-shaped baffles 21.

[0082] Wherein, when the exhaust fan 18 is not working, the pressure in the shell 1 is consistent with the outside, the gravity block on the circular plate 20 rotates slowly around the shaft at both ends as the center under the action of gravity, so that the circular plate 20 and the C-shaped baffle 21 are in parallel and pasted state, and it is also ensured that the circular plate 20 rotates around the shaft at both ends as the center.

[0083] Embodiment 7:

[0084] The embodiment provides a battery extrusion collision test device, in addition to comprising the technical scheme of the above-mentioned embodiment, further having the following technical features, the cabinet door 22 is fixedly installed with a sealing gasket on one side close to the shell 1, the cabinet door 22 is screw-mounted with a bolt, one end of the bolt penetrates through the cabinet door 22 and extends into the shell 1, the bolt is screw-connected with the cabinet door 22 and the shell 1, and the cabinet door 22 is fixedly installed with a glass cover.

[0085] Wherein, the bolt is rotated, at this time, under the action of the thread, one end of the bolt is away from the shell 1, so that the cabinet door 22 is opened, the cabinet door 22 is closed, the bolt is rotated in the opposite direction, at this time, under the action of the thread, one end of the bolt will enter the shell 1, so that the cabinet door 22 and the shell 1 are fixed, at this time, the sealing gasket on the cabinet door 22 is tightly combined with the outlet of the shell 1, so that the shell 1 is in a sealed state.

[0086] Embodiment 8:

[0087] The embodiment provides a battery extrusion collision test device, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the shell 1, the workbench 2 and the explosion-proof box 11 are integrally formed structure, the filter box 17 is communicated with the exhaust fan 18, the inner chamber of the explosion-proof box 11 is communicated with the bottom of the shell 1 and the through slot 25, the filtering precision of the activated carbon filter screen is 0.1-0.5 μm.

[0088] Wherein, ensure the stability of the overall structure, ensure that the battery pack in the combustion process will produce smoke through the activated carbon filter screen in the filter box 17 purification suction into the exhaust fan 18, then through the exhaust fan 18 is discharged to the outside, ensure that the battery pack will be in the combustion process under the action of gravity through the through slot 25 drop into the explosion-proof box 11 in the collection box 12, ensure that the battery pack in the combustion process can produce smoke filtering.

[0089] It is worth mentioning that the sealing gasket and the magnet are in the shape of a back.

[0090] Working principle: when the battery pack needs to be extruded and collided, the worker pours fine sand into the sand storage box 14 through the inlet, then the worker rotates the bolt, at this time under the action of the screw thread, one end of the bolt is away from the shell 1, so that the cabinet door 22 is opened, then the battery pack is placed on the two baffles 7 in the through slot 25, and then the cabinet door 22 is closed, and the bolt is rotated in the opposite direction, at this time, under the action of the screw thread, one end of the bolt will enter the shell 1, and the cabinet door 22 and the shell 1 are fixed, at this time, the sealing gasket on the cabinet door 22 is tightly attached to the outlet of the shell 1, to ensure that the shell 1 is in a sealed state, then the hydraulic cylinder 10 is connected to the power supply and started, the output shaft of the hydraulic cylinder 10 drives the pressure sensor 9 to descend, the pressure sensor 9 drives the sliding plate 6 to descend in the U-shaped frame 3, the sliding plate 6 drives the counterweight 5 and the transparent fireproof glass fiber cloth 4 to descend, the transparent fireproof glass fiber cloth 4 drives the pressure plate 13 and the magnet at the bottom of the pressure plate 13 to descend in the U-shaped frame 3, under the action of the magnetic force of the magnet, the magnet is attached to the top of the workbench 2, and under the action of the pressure, the sliding plate 6 extrudes the transparent fireproof glass fiber cloth 4, so that the transparent fireproof glass fiber cloth 4 is deformed and folded under the action of the extrusion force, and at the same time, the counterweight 5 moves downward and extrudes the battery pack below, the worker observes the deformation of the battery by naked eye and records the data of the pressure value detected by the pressure sensor 9;

[0091] When the battery pack is damaged, burned or even exploded in the extrusion collision of the counterweight 5, at this time the battery pack will produce smoke and splash during the burning and explosion process, the splashed parts inside the battery pack will be blocked inside the transparent fireproof glass cloth 4, avoiding the splashed parts from splashing to the staff, then the staff will connect the power supply and start the motor 23, the output shaft of the motor 23 rotates to drive the bidirectional threaded rod 8 to rotate, under the action of the thread, the bidirectional threaded rod 8 rotates to drive the two connecting blocks 26 to move away from each other in the sliding groove 24, the two connecting blocks 26 drive the two baffles 7 to move away from each other respectively, at this time the burning and exploding battery pack will fall into the collecting box 12 in the explosion-proof box 11 under the action of gravity, at this time the plugboard 15 is taken out, under the action of gravity, the fine sand in the sand storage tank 14 flows into the corresponding sand discharge pipe 16 through the discharge port, and the fine sand flows into the collecting box 12 in the explosion-proof box 11 through the sand discharge pipe 16, and quickly buries the burning battery pack in the collecting box 12, which isolates the burning battery pack from the air, thereby extinguishing the burning battery pack and ensuring that the above operation blocks the internal splashed parts of the battery pack during the burning and explosion process, while quickly extinguishing the burning battery pack to ensure the safety of personnel, wherein the fine sand can be reused to ensure that the fine sand can be repeatedly used to extinguish the burning battery pack during multiple battery extrusion collision tests, thereby reducing additional economic expenditure;

[0092] At the same time, the smoke produced by the battery pack during the burning and explosion process will pass through the transparent fireproof glass cloth 4 and spread throughout the shell 1, at this time the staff will connect the power supply and start the air extractor 18, under the action of the air extractor 18, a negative pressure is generated in the shell 1, under the action of air pressure, the circular plate 20 at the ventilation opening of the shell 1 will rotate with the two ends of the shaft as the center, so that the circular plate 20 and the C-shaped baffle 21 are not in parallel and pasted state, thereby allowing external air to enter the ventilation opening of the shell 1 through the gap between the circular plate 20 and the C-shaped baffle 21 and then be sucked into the shell 1, when the air extractor 18 is not working, the pressure in the shell 1 is consistent with the outside, the weight block on the circular plate 20 will rotate slowly with the two ends of the shaft as the center under the action of gravity, so that the circular plate 20 and the C-shaped baffle 21 are in parallel and pasted state, which also ensures that the smoke produced by the battery pack during the burning process will not be discharged to the outside through the ventilation opening of the shell 1, and then the smoke produced by the battery pack during the burning process will be sucked into the filter box 17 through the exhaust port, the smoke produced by the battery pack during the burning process will be purified by the activated carbon filter screen in the filter box 17 and sucked into the air extractor 18, and then discharged to the outside through the air extractor 18, ensuring that the smoke produced by the battery pack during the burning and explosion process is filtered out, so as not to cause damage to the health of personnel.

[0093] The embodiments of the present application are described above with reference to the drawings, and the embodiments and features in the embodiments of the present application can be combined with each other without conflict, and the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are only illustrative but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection of the present application.

Claims

1. A battery compression impact testing device, characterized in that, include: The housing (1) has a workbench (2) fixedly installed at the bottom of the inner cavity of the housing (1). A through groove (25) is opened on the workbench (2). Two baffles (7) are slidably installed in the through groove (25). A U-shaped frame (3) is fixedly installed on the top of the workbench (2). A hydraulic cylinder (10) is fixedly installed on the U-shaped frame (3). A pressure sensor (9) is fixedly installed at the output end of the hydraulic cylinder (10). A sliding plate (6) is fixedly installed at the bottom of the pressure sensor (9) and is slidably connected to the U-shaped frame (3). A transparent fireproof fiberglass cloth (4) and a counterweight (5) are fixedly installed at the bottom of the sliding plate (6). The counterweight (5) is located inside the transparent fireproof fiberglass cloth (4). A pressure plate (13) is fixedly installed at the bottom of the transparent fireproof fiberglass cloth (4) and is slidably connected to the U-shaped frame (3). A magnet is fixedly installed at the bottom of the pressure plate (13). An exhaust port is opened on the rear side of the housing (1). A drive assembly located within the worktable (2) and used to drive two baffles (7) to move closer to or further away from each other; A filter box (17) is fixedly installed on the rear side of the housing (1) and connected to the exhaust port. An activated carbon filter screen is fixedly installed inside the filter box (17), and an exhaust fan (18) is fixedly installed on one side of the filter box (17). An explosion-proof box (11) is fixedly installed at the bottom of the housing (1); Two sand storage boxes (14) are fixedly installed on the left and right sides of the shell (1), and sand discharge pipes (16) are fixedly installed at the bottom of the two sand storage boxes (14). The tail ends of the two sand discharge pipes (16) pass through the left and right sides of the explosion-proof box (11) respectively. Cabinet door (22), which is rotatably installed at the outlet position of the housing (1).

2. The battery compression impact testing device according to claim 1, characterized in that, The driving component includes: A slide (24) is formed in the workbench (2) and is connected to the through groove (25). A bidirectional threaded rod (8) is rotatably installed in the slide (24) and on the back side of the through groove (25). Two connecting blocks (26) are slidably installed in the slide (24) and on the bidirectional threaded rod (8). The two connecting blocks (26) are tightly welded to two baffles (7) respectively. A motor (23) is fixedly installed on the right side of the housing (1). The output shaft of the motor (23) extends through the right side of the housing (1) and one side of the workbench (2) into the slide (24) and is coaxially connected to the bidirectional threaded rod (8).

3. The battery compression collision testing device according to claim 2, characterized in that, The bidirectional threaded rod (8) is threadedly connected to two connecting blocks (26), and the output shaft of the motor (23) is rotatably connected to the housing (1) and the worktable (2).

4. The battery compression collision testing device according to claim 1, characterized in that, Also includes: Collection box (12), which is slidably installed inside the explosion-proof box (11) and located below the tail end of the sand discharge pipe (16); Two insert plates (15) are respectively inserted and installed at the outlet of the two sand storage boxes (14).

5. The battery compression collision testing device according to claim 1, characterized in that, Also includes: Two C-shaped baffles (21) are fixedly installed in two vents of the housing (1). A circular plate (20) is rotatably installed in each of the two vents of the housing (1). The circular plate (20) is in contact with the C-shaped baffles (21). A gravity block is fixedly installed on the side of the circular plate (20) away from the C-shaped baffles (21).

6. The battery compression impact testing device according to claim 5, characterized in that, The gravity block is located near the bottom of the circular plate (20), and the two ends of the C-shaped baffle (21) are lower than the height of the center of the circular plate (20). The two gravity blocks are located between the two circular plates (20), and the two circular plates (20) are located between the two C-shaped baffles (21).

7. The battery compression impact testing device according to claim 1, characterized in that, A sealing gasket is fixedly installed on the side of the cabinet door (22) near the shell (1). A bolt is threaded on the cabinet door (22). One end of the bolt passes through the cabinet door (22) and extends into the shell (1). The bolt is threadedly connected to the cabinet door (22) and the shell (1). A glass cover is fixedly installed on the cabinet door (22).

8. The battery compression impact testing device according to claim 5, characterized in that, The shell (1), workbench (2) and explosion-proof box (11) are integrally formed. The filter box (17) is connected to the exhaust fan (18). The inner cavity of the explosion-proof box (11) is connected to the bottom of the shell (1) and the through groove (25). The filtration accuracy of the activated carbon filter is 0.1-0.5μm.

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