Explosion-proof device of test box

Abstract

The utility model discloses an explosion-proof device of a test box, which is characterized in that the side wall of the test box is provided with a pressure relief opening, and the explosion-proof device comprises a pressure relief door, a sealing element and a clamping assembly; the clamping assembly comprises a first clamping piece and a second clamping piece; the first edge part of the pressure relief door is hinged with the side wall of the test box; the sealing element is arranged outside the pressure relief opening in a surrounding manner, and the sealing element can be clamped between the pressure relief door and the side wall of the test box; the first clamping piece is arranged on the second edge portion of the pressure relief door, the first edge portion is parallel to the second edge portion, and the second clamping piece is arranged on the side wall of the test box and used for being matched with the first clamping piece. The pressure relief reliability of the pressure relief door can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection of test boxes, in particular to an explosion-proof device for a test box. Background Art

[0002] Batteries undergo various performance tests before leaving the factory. Currently, this is commonly done in test chambers to simulate the actual battery operating environment, fully testing the battery's performance under different extreme conditions. During testing, the battery may experience excessive pressure. To relieve pressure during testing, a pressure relief window is typically installed in the side wall of the chamber, along with a pressure relief door to ensure the seal within the chamber.

[0003] However, the existing pressure relief door generally achieves sealing by interlocking with the pressure relief port. Specifically, part of the pressure relief door structure protrudes outward and is embedded in the pressure relief port. This will cause interference when the pressure is too high and the pressure relief door will be affected. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an explosion-proof device for a test box, which can quickly release pressure while ensuring sealing.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An explosion-proof device for a test box, wherein a pressure relief port is provided on a side wall of the test box, and comprises a pressure relief door, a sealing member, and a clamping assembly;

[0007] The clamping assembly includes a first clamping member and a second clamping member;

[0008] The first edge of the pressure relief door is hinged to the side wall of the test box;

[0009] The sealing member is disposed around the outside of the pressure relief port, and the sealing member can be sandwiched between the pressure relief door and the side wall of the test box;

[0010] The first clamping member is arranged on the second side of the pressure relief door, the first side and the second side are parallel to each other, and the second clamping member is arranged on the side wall of the test box and is used to cooperate with the first clamping member.

[0011] Furthermore, the first clamping member includes at least two limiting components arranged opposite to each other in the vertical direction;

[0012] A limiting channel for the second clamping member to be embedded is formed between every two of the relatively arranged limiting components, and the limiting components can be embedded with the second clamping member.

[0013] Furthermore, in the vertical direction, a card slot is respectively provided on both sides of the second card connector;

[0014] The limiting assembly is engaged with the corresponding card slot.

[0015] Furthermore, the limiting assembly includes a sleeve, an elastic member, a sliding member and an adjusting member;

[0016] The sleeve is connected to the side wall of the test box, and the axial direction and vertical direction of the sleeve are parallel to each other;

[0017] The two ends of the sleeve are interconnected;

[0018] In the vertical direction, the sliding member, the elastic member and the adjusting member are sequentially arranged in a direction gradually away from the limiting channel and press against each other;

[0019] At least a portion of the sliding member protrudes out of the sleeve and can be engaged with the second clamping member.

[0020] Furthermore, part of the adjusting member is threadedly connected to the sleeve.

[0021] Furthermore, the inner wall of one end of the sleeve away from the limiting channel has an internal thread;

[0022] A portion of the adjusting member is threadedly connected to the internal thread;

[0023] Another part of the adjusting member protrudes out of the sleeve.

[0024] Furthermore, the other part of the adjusting member is provided with a limiting member;

[0025] The outer diameter of the limiting member is greater than the inner diameter of the sleeve.

[0026] Furthermore, a protective net is provided in the pressure relief port, and a side of the protective net close to the pressure relief door is covered with a sealing film.

[0027] Furthermore, at least four corners of the sealing membrane are connected to the protective net, and a pressure relief gap can be formed between the sealing membrane and the protective net.

[0028] Furthermore, the cross section of the sealing element is circular, semicircular or square.

[0029] The beneficial effects of this utility model are that, through the cooperation of the first and second clamping members, the pressure relief door is tightly connected to the outer wall of the test chamber, and a sealing member is provided between the protective door and the side wall of the test chamber, thereby improving the sealing between the protective door and the side wall of the test chamber. Compared with the existing technology, the inner wall of the protective door can be kept flat or nearly flat, thereby maintaining smoothness during the opening process of the protective door, ensuring effective and reliable pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the test box in the present utility model;

[0031] Figure 2 This is a partial exploded view of the test box in the present utility model;

[0032] Figure 3 It is a partial structural diagram and a partial enlarged diagram of the test box in the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the clamping assembly in the utility model

[0034] Figure 5 It is a cross-sectional view of the clamping assembly in the present invention.

[0035] Description of labels:

[0036] 1. Test chamber; 11. Pressure relief port;

[0037] 2. Pressure relief door;

[0038] 3. Seals;

[0039] 4. Snap-fit ​​assembly; 41. First snap-fit ​​member; 411. Position-limiting assembly; 412. Position-limiting channel; 413. Sleeve; 414. Elastic member; 415. Sliding member; 416. Adjusting member; 417. Closing member; 418. Position-limiting member; 42. Second snap-fit ​​member; 421. Slot;

[0040] 5. Protective net; 6. Sealing film. DETAILED DESCRIPTION

[0041] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0042] Please refer to Figure 1-Figure 5, an explosion-proof device of a test box 1, a pressure relief port 11 is opened on the side wall of the test box 1, including a pressure relief door 2, a seal 3 and a clamping assembly 4; the clamping assembly 4 includes a first clamping member 41 and a second clamping member 42; the first side of the pressure relief door 2 is hinged to the side wall of the test box 1; the seal 3 is arranged around the outside of the pressure relief port 11, and the seal 3 can be clamped between the pressure relief door 2 and the side wall of the test box 1; the first clamping member 41 is arranged on the second side of the pressure relief door 2, the first side and the second side are parallel to each other, and the second clamping member 42 is arranged on the side wall of the test box 1 and is used to cooperate with the first clamping member 41.

[0043] It is understood that the cooperation between the first and second clamping members 41, 42 achieves a tight connection between the pressure relief door 2 and the outer wall of the test chamber 1. Furthermore, the sealing member 3 is interposed between the protective door and the side wall of the test chamber 1 to improve the sealing between the protective door and the side wall of the test chamber 1. Compared to the prior art, this allows the inner wall of the protective door to remain flat or nearly flat, thereby maintaining smoothness during the opening process of the protective door and ensuring effective pressure relief.

[0044] In some embodiments, the first clamping member 41 includes at least two limiting assemblies 411 arranged opposite to each other in the vertical direction; a limiting channel 412 for the second clamping member 42 to be embedded is formed between each two limiting assemblies 411 arranged opposite to each other, and the limiting assembly 411 can be engaged with the second clamping member 42. Preferably, two limiting assemblies 411 are provided. In other equivalent embodiments, the limiting assemblies 411 can be arranged in groups of two, and multiple groups of limiting assemblies 411 are arranged in sequence in the horizontal direction. The setting of the limiting assembly 411 is used to form a limiting channel 412 so that the second clamping member 42 can be engaged with or separated from the limiting channel 412, on the one hand to ensure the tightness of the connection, and on the other hand to enable the second clamping member 42 to be quickly withdrawn from the limiting channel 412 when the pressure relief door 2 is subjected to high pressure, thereby ensuring the pressure relief effect.

[0045] In some embodiments, a slot 421 is defined vertically on either side of the second engaging member 42; the retaining assembly 411 engages with the corresponding slot 421. The provision of the slot 421 ensures a tight engagement and smooth separation of the second engaging member 42 from the retaining assembly 411 when the protective door springs open.

[0046] In some embodiments, the limiting assembly 411 includes a sleeve 413, an elastic member 414, a sliding member 415, and an adjusting member 416. The sleeve 413 is connected to the side wall of the test chamber 1, and the axial direction of the sleeve 413 is parallel to the vertical direction. The two ends of the sleeve 413 are interconnected. In the vertical direction, the sliding member 415, the elastic member 414, and the adjusting member 416 are arranged in sequence in a direction gradually away from the limiting channel 412 and press against each other. The sliding member 415 at least partially protrudes from the sleeve 413 and can be engaged with the second clamping member 42. Preferably, the elastic member 414 is a compression spring, and the sliding member 415 is a ball. The sleeve 413 has a constriction 417 at one end near the limiting channel 412. The diameter of the constriction 417 is smaller than the diameter of the sliding member 415, so that part of the sliding member 415 protrudes outside the sleeve 413, while the other part is confined within the sleeve 413, ensuring that the sliding member 415 and the second clamping member 42 are interlocked. The adjustment member 416 is provided to apply pressure to the elastic member 414, so that the elastic member 414 always applies pressure to the sliding member 415, ensuring the sealing effect of the protective door. The provision of the adjustment member 416 also facilitates the replacement of the elastic member 414 and the sliding member 415, reducing the difficulty and cost of maintenance. Furthermore, due to different test conditions in the test chamber 1, different pressures are generated. The provision of the adjustment member 416 can also adjust the tightness of the connection between the sliding member 415 and the second clamping member 42 to adapt to different usage environments.

[0047] In some embodiments, a portion of the adjusting member 416 is threadedly connected to the sleeve 413 to facilitate controlling the pressure of the adjusting member 416 on the elastic member 414 .

[0048] In some embodiments, the inner wall of one end of the sleeve 413 away from the limiting channel 412 has an internal thread; a portion of the adjusting member 416 is threadedly connected to the internal thread; and another portion of the adjusting member 416 protrudes outward from the sleeve 413 .

[0049] In some embodiments, another portion of the adjustment member 416 is provided with a limit member 418; the outer diameter of the limit member 418 is larger than the inner diameter of the sleeve 413. Preferably, the adjustment member 416 is a bolt, and when the elastic member 414 is at its minimum deformation, a distance of at least 2 cm should be provided between the limit member 418 and the end face of the sleeve 413 away from the limit channel 412 to facilitate pressure adjustment of the elastic member 414.

[0050] In some embodiments, a protective net 5 is provided within the pressure relief port 11, and the side of the protective net 5 close to the pressure relief door 2 is covered with a sealing film 6. The provision of the protective net 5 is used to support the sealing film 6, and the covering of the sealing film 6 is used to improve the sealing performance of the test chamber.

[0051] In some embodiments, at least four corners of the sealing membrane 6 are connected to the protective net 5, and a pressure relief gap is formed between the sealing membrane 6 and the protective net 5. Because the sealing membrane 6 is only partially connected to the protective net 5, a deformation space is generated between the sealing membrane 6 and the protective net 5 to relieve pressure when the pressure in the test chamber 1 is too high.

[0052] In some embodiments, the cross section of the sealing member 3 is circular, semicircular or square to improve the sealing performance. Preferably, the sealing member 3 is made of foam to extend the service life of the sealing member 3.

[0053] Embodiment 1 of the present utility model is:

[0054] A explosion-proof device for a test box 1, wherein a pressure relief port 11 is provided on a side wall of the test box 1, and the device comprises a pressure relief door 2, a seal 3 and a clamping assembly 4; the clamping assembly 4 comprises a first clamping member 41 and a second clamping member 42; a first side of the pressure relief door 2 is hinged to the side wall of the test box 1; the seal 3 is arranged around the outside of the pressure relief port 11, and the seal 3 can be clamped between the pressure relief door 2 and the side wall of the test box 1; the first clamping member 41 is arranged on the second side of the pressure relief door 2, the first side and the second side are parallel to each other, and the second clamping member 42 is arranged on the side wall of the test box 1 and is used to cooperate with the first clamping member 41.

[0055] In this embodiment, the first clamping member 41 includes two limiting components 411 arranged opposite to each other in the vertical direction; a limiting channel 412 for the second clamping member 42 to be embedded is formed between each two oppositely arranged limiting components 411, and the limiting component 411 can be embedded with the second clamping member 42.

[0056] In this embodiment, in the vertical direction, a slot 421 is provided on each side of the second clamping member 42; the limiting assembly 411 is engaged with the corresponding slot 421. The limiting assembly 411 includes a sleeve 413, an elastic member 414, a sliding member 415 and an adjusting member 416; the sleeve 413 is connected to the side wall of the test box 1, and the axial direction of the sleeve 413 is parallel to the vertical direction; the two ends of the sleeve 413 are interconnected; in the vertical direction, the sliding member 415, the elastic member 414 and the adjusting member 416 are arranged in sequence in a direction gradually away from the limiting channel 412, and press against each other; a portion of the sliding member 415 protrudes from the outside of the sleeve 413 and can be engaged with the second clamping member 42. Preferably, the elastic member 414 is a compression spring and the sliding member 415 is a ball. The sleeve 413 has a closing opening 417 in one end close to the limiting channel 412, and the diameter of the closing opening 417 is smaller than the diameter of the sliding member 415.

[0057] In this embodiment, the inner wall of the end of the sleeve 413 away from the limiting passage 412 has an internal thread; a portion of the adjusting member 416 is threadedly connected to the internal thread; another portion of the adjusting member 416 protrudes outward from the sleeve 413, and another portion of the adjusting member 416 is provided with a limiting member 418; the outer diameter of the limiting member 418 is larger than the inner diameter of the sleeve 413. Preferably, the adjusting member 416 is a bolt, and when the elastic member 414 is in the minimum deformation state, a distance of at least 2 cm should be provided between the limiting member 418 and the end surface of the sleeve 413 away from the limiting passage 412.

[0058] In this embodiment, a protective net 5 is disposed within the pressure relief port 11. The side of the protective net 5 near the pressure relief door 2 is covered with a sealing membrane 6. The four corners of the sealing membrane 6 are connected to the protective net 5, and a pressure relief gap is formed between the sealing membrane 6 and the protective net 5. Preferably, the cross-section of the sealing member 3 is semicircular.

[0059] The working principle of this utility model is:

[0060] In the initial state, the second engaging member 42 is embedded in the limiting channel 412 , and the sliding member 415 is embedded in the engaging groove 421 ;

[0061] When the pressure in the test chamber 1 is too high, the pressure relief door 2 is subjected to pressure shock, and the air flow is discharged from the gap between the sealing membrane 6 and the protective net 5 and impacts the pressure relief door 2, the sealing membrane 6 is lifted up, and the second clamping member 42 is separated from the limiting channel 412.

[0062] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. An explosion-proof device for a test box, wherein a pressure relief port is provided on the side wall of the test box, characterized in that: Includes pressure relief door, seal and snap-on assembly; The clamping assembly includes a first clamping member and a second clamping member; The first edge of the pressure relief door is hinged to the side wall of the test box; The sealing member is disposed around the outside of the pressure relief port, and the sealing member can be sandwiched between the pressure relief door and the side wall of the test box; The first clamping member is arranged on the second side of the pressure relief door, the first side and the second side are parallel to each other, and the second clamping member is arranged on the side wall of the test box and is used to cooperate with the first clamping member.

2. The explosion-proof device of a test chamber according to claim 1, characterized in that: The first clamping member includes at least two limiting components arranged opposite to each other in the vertical direction; A limiting channel for the second clamping member to be embedded is formed between every two of the relatively arranged limiting components, and the limiting components can be embedded with the second clamping member.

3. The explosion-proof device of a test chamber according to claim 2, characterized in that: In the vertical direction, a card slot is respectively provided on both sides of the second card connector; The limiting assembly is engaged with the corresponding card slot.

4. The explosion-proof device of a test chamber according to claim 2, characterized in that: The limiting assembly includes a sleeve, an elastic member, a sliding member and an adjusting member; The sleeve is connected to the side wall of the test box, and the axial direction and vertical direction of the sleeve are parallel to each other; The two ends of the sleeve are interconnected; In the vertical direction, the sliding member, the elastic member and the adjusting member are sequentially arranged in a direction gradually away from the limiting channel and press against each other; At least a portion of the sliding member protrudes out of the sleeve and can be engaged with the second clamping member.

5. The explosion-proof device of a test chamber according to claim 4, characterized in that: Part of the adjusting member is threadedly connected to the sleeve.

6. The explosion-proof device of a test chamber according to claim 5, characterized in that: The inner wall of one end of the sleeve away from the limiting channel has an internal thread; A portion of the adjusting member is threadedly connected to the internal thread; Another part of the adjusting member protrudes out of the sleeve.

7. The explosion-proof device of a test chamber according to claim 6, characterized in that: The other part of the adjusting member is provided with a limiting member; The outer diameter of the limiting member is greater than the inner diameter of the sleeve.

8. The explosion-proof device of a test chamber according to claim 1, characterized in that: A protective net is provided in the pressure relief port, and a side of the protective net close to the pressure relief door is covered with a sealing film.

9. The explosion-proof device of a test chamber according to claim 8, characterized in that: At least four corners of the sealing film are connected to the protective net, and a pressure relief gap can be formed between the sealing film and the protective net.

10. The explosion-proof device of a test chamber according to claim 1, characterized in that: The cross section of the sealing member is circular, semicircular or square.

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