Battery explosion testing device

Abstract

The utility model relates to the technical field of battery production, in particular to a battery explosion testing device, which comprises an explosion box, a pressure carrier and a traction mechanism, the plurality of ballasting bodies are respectively arranged above the burning and explosion box, the plurality of ballasting bodies are arranged along the height direction, and each ballasting body can respectively fall onto the burning and explosion box; and the plurality of traction mechanisms are respectively connected with each pressure carrier and are used for enabling the corresponding pressure carriers to generate impact pressure on the batteries in the blast box until the batteries are subjected to blast, and the pressure carriers are pulled to reset. According to the battery burning explosion testing device, the plurality of pressure carriers are arranged on the burning explosion box, the lifting of the pressure carriers is controlled through the traction mechanism, and the pressure carriers fall onto the burning explosion box in sequence from bottom to top during testing until the battery in the burning explosion box is burnt and exploded; the device can accurately detect the maximum external force which can be borne by the square lithium battery when the square lithium battery is exploded, can prevent splashes generated by the explosion of the battery from flying out, and is high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a battery explosion testing device. Background Art

[0002] A square lithium battery is a lithium battery with a negative electrode made of lithium metal or lithium alloy and a non-aqueous electrolyte solution and a rectangular shape. Generally, square lithium batteries are used in large equipment such as electric vehicles and electric motorcycles.

[0003] During the production process of square lithium batteries, it is necessary to conduct sampling inspection on the produced square lithium batteries.

[0004] At present, when square lithium batteries are subjected to large external forces, their internal structures are damaged and prone to combustion and explosion, but existing detection devices are unable to detect the maximum external force that square lithium batteries can withstand. Utility Model Content

[0005] The utility model provides a battery explosion test device, which is used to solve the problem in the prior art that the maximum external force when a square lithium battery explodes cannot be detected.

[0006] The utility model provides a battery explosion test device, comprising:

[0007] An explosion box for containing batteries;

[0008] There are multiple ballast bodies, which are respectively arranged above the explosion box. The multiple ballast bodies are arranged in the height direction, and each ballast body can fall onto the explosion box respectively;

[0009] There are multiple traction mechanisms, which are respectively connected to each ballast body and are used to make the corresponding ballast body generate impact pressure on the battery in the explosion box until the battery explodes and the traction ballast body is reset.

[0010] Preferably, the explosion box comprises:

[0011] A box for placing batteries;

[0012] The sealing cover is installed at the upper end of the box body, and the lower end surface of the sealing cover can maintain pressure contact with the upper end surface of the battery in the box body.

[0013] Preferably, the explosion box further includes a limiting mechanism, and the limiting mechanism includes:

[0014] There are two limit grooves, symmetrically arranged on the inner wall of the box;

[0015] There are two limiting parts, which are respectively arranged at positions on the sealing cover opposite to the limiting grooves and are slidably matched with the sealing cover;

[0016] A pushing assembly is arranged on the sealing cover and is located between the two limiting parts. The pushing assembly can make the outer ends of the two limiting parts respectively snap outward into the corresponding limiting grooves.

[0017] There are two return springs, each capable of causing the outer end of the limiting portion to retract inwardly into the sealing cover.

[0018] Preferably, the pushing assembly comprises:

[0019] A propulsion part, wherein the outer wall of the propulsion part is a first inclined surface inclined inward from top to bottom;

[0020] There are two connecting parts, the outer sides of the two connecting parts are respectively connected to the two limiting parts, the inner sides of the two connecting parts are respectively second inclined surfaces inclined inward from top to bottom, and the first inclined surface is slidably matched with the second inclined surface;

[0021] When the propulsion part moves downward, the two connection parts move in opposite directions, so that the two limiting parts are clamped outward into the limiting grooves;

[0022] When the propulsion portion moves upward, the return spring pushes the two connection portions to move toward each other, so that the two limiting portions are retracted into the sealing cover.

[0023] Preferably, a threaded hole is provided on the sealing cover, and the pushing assembly further comprises a pushing screw, which is arranged in the threaded hole, and the lower end of the pushing screw is connected to the pushing part.

[0024] Preferably, each traction mechanism comprises:

[0025] There are at least two traction members, at least one end of which is connected to one side of the corresponding ballast body, and at least one end of which is connected to the other side of the corresponding ballast body;

[0026] There are two rotating shafts, one of which is connected to the starting end of the traction member located on one side of the ballast body, and the other rotating shaft is connected to the starting end of the traction member located on the other side of the ballast body;

[0027] There are two rotating driving members, which are respectively connected to the two rotating shafts and are used to unwind the traction member from the rotating shaft or rewind the traction member onto the rotating shaft.

[0028] Preferably, it further comprises a plurality of supporting mechanisms, which are respectively arranged at the lower end of each pressure body, and each supporting mechanism comprises:

[0029] A support plate is arranged at the lower end of the pressure carrier;

[0030] The driving mechanism is connected to one end of the supporting plate and can drive the supporting plate to move to the outside of the pressure body.

[0031] Preferably, the driving mechanism comprises:

[0032] Linear drive components;

[0033] A toothed plate connected to the linear drive member and arranged along the axis of the linear drive member;

[0034] The gear is fixedly mounted on one end of the support plate and meshes with the tooth plate.

[0035] Preferably, it also includes a gas storage tank and a pressure relief pipe, and both ends of the pressure relief pipe are connected to the gas storage tank and the explosion box respectively.

[0036] Preferably, it also includes:

[0037] A base, on which the explosion box is arranged;

[0038] A support frame, the lower end of which is mounted on the base;

[0039] A plurality of traction mechanisms are respectively installed on the supporting frames.

[0040] The beneficial effects of the utility model are as follows:

[0041] 1. The battery explosion test device of the utility model is provided with a plurality of ballasts on the explosion box, and the lifting and lowering of the ballasts is controlled by a traction mechanism. During the test, the ballasts are sequentially dropped onto the explosion box from bottom to top until the battery in the explosion box explodes. The maximum external force that a square lithium battery can withstand when it explodes can be accurately detected. After the test, the ballasts on the explosion box are reset sequentially from top to bottom to facilitate subsequent testing of other batteries.

[0042] 2. The battery explosion test device of the utility model places the battery to be tested in the explosion box for the maximum explosion pressure test, and the pressure carrier covers the upper end of the explosion box, which can prevent the splashes generated by the battery explosion from flying outward, and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] Figure 1 This is a schematic diagram of the overall structure of the battery explosion test device of the utility model;

[0045] Figure 2 This is a schematic diagram of the internal structure of the battery explosion test device of the utility model;

[0046] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0047] Figure 4 for Figure 2 A magnified view of the structure at point B.

[0048] Reference numerals:

[0049] 100-explosion box, 110-box, 120-sealing cover, 130-limiting mechanism, 131-limiting groove, 132-limiting part, 133-pushing assembly, 1331-pushing part, 1332-connecting part, 134-reset spring, 135-pushing screw, 200-pressure carrier, 300-traction mechanism, 310-traction member, 320-rotating shaft, 330-rotating drive member, 400-supporting mechanism, 410-support plate, 420-drive mechanism, 421-linear drive member, 422-tooth plate, 423-gear, 500-gas storage tank, 510-sealing plug, 600-pressure relief pipe, 610-check valve, 700-base, 800-support frame, 900-controller. DETAILED DESCRIPTION

[0050] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. 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.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] like Figure 1-4 As shown, this embodiment provides a battery explosion test device, including an explosion box 100, a ballast body 200 and a traction mechanism 300, wherein the explosion box 100 is used to accommodate batteries. There are multiple ballast bodies 200, which are respectively arranged above the explosion box 100, and the multiple ballast bodies 200 are arranged in the height direction, and each ballast body 200 can be dropped onto the explosion box 100 respectively. There are multiple traction mechanisms 300, and each traction mechanism 300 is respectively connected to a ballast body 200, which is used to make the corresponding ballast body 200 generate impact pressure on the battery in the explosion box 100 until the battery explodes, and the traction ballast body 200 is reset.

[0055] By using the technical solution of this embodiment, a plurality of ballast bodies 200 are arranged on the explosion box 100, and each ballast body 200 is connected to a traction mechanism 300 respectively. Under the traction of the traction mechanism 300, the ballast body 200 can be raised and lowered. During the test, the lowest ballast body 200 first falls onto the explosion box 100. If the battery in the explosion box 100 does not explode, the second ballast body 200 from the bottom to the top continues to fall onto the first ballast body 200. If the battery in the explosion box 100 explodes, the pressure at this time (the weight of the two ballast bodies 200) is recorded. If the battery in the explosion box 100 still does not explode, the ballast body 200 is continued to fall onto the explosion box 100 in a bottom-to-top order until the battery in the explosion box 100 explodes. By allowing a plurality of ballast bodies 200 to fall onto the explosion box 100 in sequence, the maximum external force that a square lithium battery can withstand when it explodes can be accurately detected. The ballast bodies 200 dropped onto the explosion box 100 are stacked on each other in the height direction, which can well apply pressure to the battery in the explosion box 100, ensuring the accuracy of the test results. After the test is completed, under the traction of the traction mechanism 300, the top ballast body 200 rises first, and the lower ballast bodies 200 rise in turn, and the ballast bodies 200 on the explosion box 100 are reset in turn in a top-to-bottom order. The time required for all ballast bodies 200 to be reset is short, which is convenient for testing other batteries.

[0056] It should be noted that the ballast 200 is made of high-density, high-strength material and has a certain weight and strength. The shape of the ballast 200 is preferably a rectangular block, which can be stacked in the height direction so that the ballast 200 can fall smoothly on the explosion box 100 or the upper ballast 200 can fall smoothly on the lower ballast 200.

[0057] like Figure 2 As shown, in the technical solution of this embodiment, the explosion box 100 includes a box body 110 and a sealing cover 120. The box body 110 is used to place the battery to be tested. The sealing cover 120 is installed on the upper end of the box body 110, and the lower end surface of the sealing cover 120 can maintain pressure contact with the upper end surface of the battery in the box body 110.

[0058] Specifically, after the sealing cover 120 is fully buckled on the box body 110, the distance between the lower end surface of the sealing cover 120 and the inner bottom of the box body 110 is equal to the thickness of the battery, so that after the sealing cover 120 is fully buckled on the box body 110, the lower end surface of the sealing cover 120 and the upper end surface of the battery are in contact with each other and there is a slight pressure. This is to ensure that when the ballast body 200 falls to the upper end surface of the sealing cover 120, the sealing cover 120 can better transfer the pressure of the ballast body 200 to the battery, so that the battery can withstand all the pressure brought by the ballast body 200, and improve the test accuracy of the maximum explosion pressure value.

[0059] like Figure 2 , Figure 3 As shown, in the technical solution of this embodiment, the explosion box 100 also includes a limiting mechanism 130, which includes a limiting groove 131, a limiting portion 132, a pushing assembly 133 and a reset spring 134, wherein there are two limiting grooves 131, and the two limiting grooves 131 are symmetrically opened on the inner side wall of the box body 110. There are two limiting portions 132, and the two limiting portions 132 are respectively arranged on the sealing cover 120 at positions opposite to the limiting groove 131, and the two limiting portions 132 are respectively slidably matched with the sealing cover 120. The pushing assembly 133 is arranged on the sealing cover 120, and the pushing assembly 133 is located between the two limiting portions 132, and the pushing assembly 133 can make the outer ends of the two limiting portions 132 respectively snap into the corresponding limiting grooves 131 outwardly. There are two reset springs 134, and the compression elastic force of the two reset springs 134 can make the outer ends of the limiting portions 132 retract inwardly into the sealing cover 120.

[0060] It should be noted that, after the sealing cover 120 is completely buckled on the box body 110, the distance between the lower end surface of the sealing cover 120 and the inner bottom of the box body 110 is equal to the thickness of the battery. Therefore, after the battery is placed in the box body 110, a large force is required to completely buckle the sealing cover 120 on the box body 110 so that the lower end surface of the sealing cover 120 and the upper end surface of the battery are in contact with each other. The function of the limiting mechanism 130 is to easily buckle the sealing cover 120 completely on the box body 110 after the battery is placed in the box body 110 so that the lower end surface of the sealing cover 120 and the upper end surface of the battery are slightly pressed against each other.

[0061] Specifically, if Figure 3 As shown, a cavity is provided in the sealing cover 120, and the limiting part 132, the pushing component 133 and the reset spring 134 are all arranged in the cavity. The two limiting parts 132 are respectively slidably matched with the inner wall of the cavity and can move horizontally left and right. When the pushing component 133 moves downward, the outer ends of the two limiting parts 132 can be respectively inserted outward into the corresponding limiting grooves 131, so that the sealing cover 120 is completely buckled on the box body 110; when the pushing component 133 moves upward, the compression elastic force of the reset spring 134 can make the outer ends of the limiting parts 132 retract inward into the sealing cover 120, and the sealing cover 120 can be taken out from the box body 110.

[0062] like Figure 3 As shown, in the technical solution of this embodiment, the pushing assembly 133 includes a pushing portion 1331 and a connecting portion 1332, and the outer wall of the pushing portion 1331 is a first inclined surface that is inclined inward from top to bottom. There are two connecting portions 1332, and the outer sides of the two connecting portions 1332 are respectively connected to the two limiting portions 132, and the inner sides of the two connecting portions 1332 are respectively second inclined surfaces that are inclined inward from top to bottom, and the first inclined surface and the second inclined surface are slidably matched. When the pushing portion 1331 moves downward, the two connecting portions 1332 move in opposite directions, so that the two limiting portions 132 are outwardly inserted into the limiting groove 131; when the pushing portion 1331 moves upward, the reset spring 134 pushes the two connecting portions 1332 to move toward each other, so that the two limiting portions 132 are retracted into the sealing cover 120.

[0063] Specifically, the outer wall of the propulsion part 1331 is a conical surface with a large diameter at the upper end and a small diameter at the lower end, the two connecting parts 1332 are symmetrically arranged, the outer sides of the two connecting parts 1332 are respectively fixedly connected with the corresponding limiting parts 132 by means of snap connection, screw connection or bonding, the inner sides of the two connecting parts 1332 are respectively a conical surface, and the inner sides of the two connecting parts 1332 are respectively slidably matched with the outer wall of the propulsion part 1331. The two ends of the reset spring 134 are respectively against the outer side of the connecting part 1332 and the inner cavity wall of the sealing cover 120. Since the upper end diameter of the propulsion portion 1331 is large and the lower end diameter is small, when the propulsion portion 1331 moves downward, the two limiting portions 132 can be pushed to move outward respectively, and the outer ends of the two limiting portions 132 can be respectively inserted into the corresponding limiting grooves 131 outward; when the propulsion portion 1331 moves upward, under the action of the compression elastic force of the return spring 134, the two limiting portions 132 move inward respectively, so that the outer ends of the two limiting portions 132 are respectively retracted inward into the cavity of the sealing cover 120.

[0064] like Figure 3 As shown, in the technical solution of this embodiment, a threaded hole is provided on the sealing cover 120, and the pushing assembly 133 further includes a pushing screw 135, which is threadedly connected to the inner wall of the threaded hole, and the lower end of the pushing screw 135 is fixedly connected to the pushing portion 1331 by means of clamping or bonding. A screw groove is provided at the top of the pushing screw 135, and a screwdriver can be inserted into the screw groove from the threaded hole, and the pushing screw 135 can be rotated to make the pushing screw 135 drive the pushing portion 1331 to move up or down, so that the sealing cover 120 can be completely buckled on the box body 110 without any effort.

[0065] like Figure 2 , Figure 4 As shown, in the technical solution of this embodiment, each traction mechanism 300 includes a traction member 310, a rotating shaft 320 and a rotating driving member 330, wherein there are at least two traction members 310, the end of at least one traction member 310 is connected to one side of the corresponding ballast body 200, and the end of at least another traction member 310 is connected to the other side of the corresponding ballast body 200. There are two rotating shafts 320, one of which is connected to the beginning of the traction member 310 located on one side of the ballast body 200, and the other is connected to the beginning of the traction member 310 located on the other side of the ballast body 200. There are two rotating driving members 330, and the two rotating driving members 330 are respectively connected to the two rotating shafts 320, so as to unwind the traction member 310 from the rotating shaft 320 or rewind the traction member 310 onto the rotating shaft 320.

[0066] Specifically, the traction member 310 is a steel wire rope, the beginning of the traction member 310 is wound around the rotating shaft 320, and the ends of the two traction members 310 are respectively fixedly connected to the two sides of the ballast body 200. The rotating drive member 330 is a servo motor or a stepping motor, which has stable power output, fast action, and simple structure. The rotating drive member 330 can unwind the traction member 310 from the rotating shaft 320 by forward rotation, and can rewind the traction member 310 onto the rotating shaft 320 by reverse rotation.

[0067] It should be noted that the rotation speed of the rotating drive member 330 can simulate the falling speed of the ballast body 200. By changing the rotation speed of the rotating drive member 330 to change the falling speed of the ballast body 200 during the test, the maximum pressure value of the battery explosion at different speeds can be tested.

[0068] like Figure 2 , Figure 4 As shown, in the technical solution of this embodiment, a supporting mechanism 400 is also included. There are multiple supporting mechanisms 400, which are respectively arranged at the lower end of each ballast body 200, and are used to support the ballast body 200 together with the traction member 310, share the tension borne by the traction member 310, avoid the traction member 310 breaking and causing the ballast body 200 to fall accidentally, and extend the service life of the traction member 310. Specifically, each supporting mechanism 400 includes two supporting plates 410 and a driving mechanism 420, and the two supporting plates 410 are symmetrically arranged at the lower end of the ballast body 200, and the driving mechanism 420 is connected to one end of the supporting plate 410, and can drive the supporting plate 410 to move to the outside of the ballast body 200.

[0069] Before the ballast body 200 is about to fall, the driving mechanism 420 drives the support plate 410 to move to the outside of the ballast body 200, so that the support plate 410 no longer supports the ballast body 200, so that the ballast body 200 can descend smoothly; after the ballast body 200 is reset, the driving mechanism 420 drives the two support plates 410 to move to the left and right sides of the lower end of the ballast body 200, and support the ballast body 200 together with the traction member 310.

[0070] like Figure 2 , Figure 4 As shown, in the technical solution of this embodiment, the driving mechanism 420 includes a linear driving member 421, a toothed plate 422 and a gear 423. The toothed plate 422 is connected to the linear driving member 421 and is arranged along the axis of the linear driving member. The gear 423 is fixedly mounted on one end of the support plate 410, and the gear 423 and the toothed plate 422 are meshed with each other.

[0071] The linear drive member 421 can be an electric push rod, a cylinder, a hydraulic cylinder, or a servo electric cylinder. Figure 2 , Figure 4As shown, the axis of the linear drive member 421 is vertically arranged, the outer side of the tooth plate 422 is fixedly connected to the driving end of the linear drive member 421, and the inner side of the tooth plate 422 is meshed with the gear 423. When the linear drive member 421 is in motion, the tooth plate 422 is meshed with the gear 423, so that the support plate 410 rotates to a horizontal position to support the ballast member, or rotates to a vertical position to avoid the ballast member.

[0072] like Figure 1 , Figure 2 As shown, in the technical solution of this embodiment, the battery explosion test device also includes a gas tank 500 and a pressure relief pipe 600, and the two ends of the pressure relief pipe 600 are respectively connected to the gas tank 500 and the explosion box 100. After the battery explodes, the high-pressure gas generated by the explosion will flow into the gas tank 500 through the pressure relief pipe 600 and be stored in the gas tank 500. A one-way valve 610 is installed on the pressure relief pipe 600 to prevent gas backflow. A sealing plug 510 is installed on the upper port of the gas tank 500 to prevent gas overflow.

[0073] like Figure 1 , Figure 2 As shown, in the technical solution of this embodiment, the battery explosion test device also includes a base 700 and a support frame 800. The explosion box 100 is arranged on the base 700. The base 700 is provided with a circuit and a power plug. There are two support frames 800, and the lower ends of the two support frames 800 are respectively installed on the base 700. A plurality of pressure bodies 200 are respectively located between the two support frames 800, and a plurality of traction mechanisms 300 and a plurality of supporting mechanisms 400 are respectively installed on the corresponding support frames 800.

[0074] The battery explosion test device also includes a controller 900, which is connected to the rotary drive member 330 and the linear drive member 421 respectively. After receiving the corresponding instructions, the controller 900 sends instructions to the rotary drive member 330 to control the rotary drive member 330 to rotate forward or reverse; the controller 900 sends instructions to the linear drive member 421 to control the linear drive member 421 to move upward or downward. The degree of automation is high.

[0075] Working principle:

[0076] Open the sealing cover 120, put the battery into the box body 110, and then buckle the sealing cover 120 to press the battery; the controller 900 sends a command to the linear drive member 421, the linear drive member 421 drives the tooth plate 422 to move downward, the tooth plate 422 engages with the gear 423, so that the support plate 410 rotates from the horizontal position to the vertical position, and the support plate 410 no longer supports the pressure carrier 200. The controller 900 sends a command to the rotary drive member 330, and the rotary drive member 330 drives the rotating shaft 320 to rotate, so that the traction member 310 is unwound from the rotating shaft 320, and the ballast body 200 falls down onto the explosion box 100 and presses the battery, and the battery status in the explosion box 100 is observed. If it has not exploded, another set of rotary drive members 330 is started to increase the pressure above the battery until the battery explodes, and the pressure the battery is subjected to when it explodes is recorded; after the battery explodes, the high-pressure gas generated by the explosion flows into and is stored in the gas storage tank 500 through pressure relief; the rotary drive member 330 rotates in the opposite direction, driving the rotating shaft 320 to rotate in the opposite direction to retract the traction member 310, and the ballast body 200 pulls the ballast body 200 to move upward and reset; finally, the sealing cover 120 is opened to clean up the battery debris in the explosion box 100.

[0077] Combined with the above structure, the battery explosion test device of this embodiment has the following advantages:

[0078] 1. It can more accurately detect the maximum external force that a square battery can withstand when it explodes.

[0079] 2. When the battery explodes, the sealing cover 120 is pressed by the ballast plate to prevent the sealing cover 120 from flying outward. At the same time, the high-pressure gas generated by the explosion flows into the gas storage tank 500 through the pressure relief pipe 600, and the high-pressure gas is promptly diverted to avoid damage to the explosion box 100 due to excessive internal pressure.

[0080] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0081] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A battery explosion test device, characterized in that: include: An explosion box for containing batteries; There are multiple ballast bodies, which are respectively arranged above the explosion box. The multiple ballast bodies are arranged in the height direction, and each of the ballast bodies can fall onto the explosion box respectively; There are multiple traction mechanisms, which are respectively connected to each of the pressure carriers, and are used to make the corresponding pressure carriers generate impact pressure on the batteries in the explosion box until the batteries explode, and then pull the pressure carriers to reset.

2. The battery explosion test device according to claim 1, characterized in that: The explosion box comprises: A box for placing batteries; The sealing cover is installed at the upper end of the box body, and the lower end surface of the sealing cover can maintain pressure contact with the upper end surface of the battery in the box body.

3. The battery explosion test device according to claim 2, characterized in that: The explosion box further includes a limiting mechanism, which includes: There are two limit grooves, which are symmetrically arranged on the inner wall of the box body; There are two limiting parts, which are respectively arranged at positions on the sealing cover opposite to the limiting grooves, and the limiting parts are slidably matched with the sealing cover; A pushing assembly is arranged on the sealing cover and is located between the two limiting parts. The pushing assembly can make the outer ends of the two limiting parts respectively snap outward into the corresponding limiting grooves. There are two return springs, which can respectively retract the outer ends of the two limiting parts inwardly into the sealing cover.

4. The battery explosion test device according to claim 3, characterized in that: The pushing component comprises: A propulsion portion, wherein the outer wall of the propulsion portion is a first inclined surface inclined inward from top to bottom; There are two connecting parts, the outer sides of the two connecting parts are respectively connected to the two limiting parts, and the inner sides of the two connecting parts are respectively second inclined surfaces inclined inward from top to bottom, and the first inclined surface is slidably matched with the second inclined surface; When the propulsion portion moves downward, the two connection portions move away from each other, so that the two limiting portions are clamped outwardly into the limiting grooves; When the propulsion portion moves upward, the return spring pushes the two connection portions to move toward each other, so that the two limiting portions are retracted into the sealing cover.

5. The battery explosion test device according to claim 4, characterized in that: The sealing cover is provided with a threaded hole, and the pushing assembly further comprises a pushing screw, which is arranged in the threaded hole, and the lower end of the pushing screw is connected to the pushing part.

6. The battery explosion test device according to claim 1, characterized in that: Each of the traction mechanisms comprises: There are at least two traction members, at least one end of which is connected to one side of the corresponding ballast body, and at least one end of which is connected to the other side of the corresponding ballast body; There are two rotating shafts, one of which is connected to the starting end of the traction member located on one side of the ballast body, and the other rotating shaft is connected to the starting end of the traction member located on the other side of the ballast body; There are two rotating driving members, which are respectively connected to the two rotating shafts and are used to unwind the traction member from the rotating shaft or rewind the traction member onto the rotating shaft.

7. The battery explosion test device according to claim 1, characterized in that: It also includes a plurality of supporting mechanisms, which are respectively arranged at the lower end of each of the pressure bodies, and each of the supporting mechanisms respectively includes: A support plate, symmetrically arranged at the lower end of the pressure carrier; The driving mechanism is connected to one end of the supporting plate and can drive the supporting plate to move to the outside of the pressure body.

8. The battery explosion test device according to claim 7, characterized in that: The driving mechanism comprises: Linear drive components; A toothed plate connected to the linear drive member and arranged along the axis of the linear drive member; The gear is fixedly mounted on one end of the support plate and meshes with the toothed plate.

9. The battery explosion test device according to any one of claims 1 to 8, characterized in that: It also includes a gas storage tank and a pressure relief pipe, and the two ends of the pressure relief pipe are respectively connected to the gas storage tank and the explosion box.

10. The battery explosion test device according to claim 9, characterized in that: Also includes: A base, on which the explosion box is arranged; A support frame, the lower end of which is mounted on the base; The plurality of traction mechanisms are respectively mounted on the support frame.

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