Explosion-proof device for lithium battery test

Abstract

The utility model discloses an explosion-proof device for testing a lithium battery, which belongs to the field of explosion-proof boxes and comprises an explosion-proof box body, a box door is rotatably mounted on the front surface of the explosion-proof box body, a sliding groove is formed in the front surface of the box door, and a filtering device is slidably mounted in the sliding groove and located on the outer side of the explosion-proof box body. A fixing device used for fixing the filtering device is arranged at the position, located above the filtering device, of the front face of the box door, a ventilation device is arranged in the center of the front face of the box door, and the filtering device comprises a mounting ring frame and can rapidly absorb and discharge smoke generated by explosion in the anti-explosion box body, and the situation that the smoke is directly discharged to pollute air is prevented; the filter element for absorbing smoke can be rapidly replaced and can be assembled in advance, the purpose of rapid replacement can be achieved when the service life of the filter element is ended in the absorption process, the smoke absorption efficiency is guaranteed, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof boxes, and more specifically, to an explosion-proof device for testing lithium batteries. Background Technology

[0002] To prevent lithium batteries from exploding and posing a danger to the outside world during pressure testing, they are typically placed inside an explosion-proof enclosure. Patent publication number CN216589746U discloses an explosion-proof device for lithium battery testing, relating to the field of lithium batteries. The device includes a main body with a buffer mechanism on its inner sidewall. A door is located near one side of the front surface of the main body, and a smoke ventilation mechanism is located on the outer side of the door. A connecting shaft is installed between one side of the door and the outer side of the main body, allowing the door to be movably installed with the main body via the connecting shaft. The buffer mechanism includes a buffer groove, with telescopic push rods installed near the four corners of the inner sidewall of the buffer groove. One end of each telescopic push rod is connected to a buffer plate, and a spring is wound around the outer side of the telescopic push rod. This explosion-proof device for lithium battery testing effectively mitigates the impact force generated during a lithium battery explosion by incorporating a buffer mechanism, preventing damage to the device due to the explosion and thus providing excellent explosion protection. It also facilitates the rapid removal of smoke generated during a lithium battery explosion.

[0003] While existing technologies can quickly remove fumes from the inside of the enclosure, the fumes are discharged directly without proper purification, causing environmental pollution. Current technologies typically use filters for filtration, but due to the large amount of fumes from explosions, these filters need to be replaced frequently. However, current filters need to be removed and reinstalled before replacement, making pre-installation and quick replacement impossible, thus reducing the overall practicality of the device. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an explosion-proof device for lithium battery testing. It can quickly absorb and discharge the smoke generated by an explosion inside the explosion-proof enclosure, preventing direct discharge and air pollution. Furthermore, the filter element for absorbing the smoke can be quickly replaced and can be pre-assembled. If the filter element reaches the end of its service life during the absorption process, it can also be quickly replaced, ensuring the smoke absorption efficiency and improving the practicality of the device.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An explosion-proof device for testing lithium batteries includes an explosion-proof enclosure. A door is rotatably mounted on the front of the enclosure. A sliding groove is provided on the front of the door. A filter device is slidably mounted inside the sliding groove on the outside of the explosion-proof enclosure. A fixing device for fixing the filter device is fixedly provided on the front of the door above the filter device. A ventilation device is provided inside the center of the front of the door.

[0009] Furthermore, the filter device includes a mounting ring frame, on the back of which a sliding strip is fixedly mounted, and the sliding strip is slidably mounted inside a sliding groove.

[0010] Furthermore, a fixing collar is fixedly installed in the middle of the mounting ring frame, and ring tubes of the same size are fixedly installed on both the left and right sides of the inner wall of the mounting ring frame. The inner wall of the ring tubes is provided with snap-fit ​​grooves. The inner side of the mounting ring frame is fixedly installed against the outer wall of the box door, and the outer side of the inner wall of the mounting ring frame is detachably installed with the second filter plate. The left and right ends of the second filter plate are fixedly installed with locking strips.

[0011] Furthermore, the shape of the card strip is adapted to the shape of the card slot.

[0012] Furthermore, the fixing device includes a fixing plate, a T-shaped sleeve rod is movably sleeved inside the fixing plate, a pull ring is fixedly connected to the top end of the T-shaped sleeve rod, a spring is fixedly connected to the bottom side of the top end of the T-shaped sleeve rod, the bottom end of the spring is fixedly connected to the top surface of the fixing plate, one end of the fixing plate is fixedly connected to the outer wall of the box door, and the size of the bottom end of the T-shaped sleeve rod is adapted to the size of the fixing ring.

[0013] Furthermore, the ventilation device includes a motor, the output shaft of which is driven by a belt, the bottom end of which is driven by a pulley, a mounting bracket is rotatably mounted on the outer side of the pulley, a connecting shaft is fixedly mounted on the inner end of the pulley, and a plurality of fan blades are fixedly mounted on the surface of the connecting shaft.

[0014] Furthermore, a mounting groove is provided in the middle of the box door, the shape of which is adapted to the shape of the ventilation device. The left and right ends of the mounting bracket are fixedly installed on the inner wall of the box door, and the circular area formed by the joint rotation of several fan blades is adapted to the area of ​​the second filter plate.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This solution utilizes the activated carbon inside filter plate 2 and filter plate 1 to quickly absorb harmful substances in the smoke generated by the explosion inside the explosion-proof box, thereby improving the overall environmental friendliness of the device and preventing environmental pollution. Furthermore, filter plate 1 can be quickly rotated and disassembled with the clamping strip, and can also be replaced through the two ring pipes, achieving a more efficient absorption efficiency and disassembly and replacement effect, further improving the practicality of the device.

[0018] (2) This solution utilizes the belt drive method of the motor, which eliminates the need to place it inside the flue gas emission channel, thereby protecting the internal structure of the motor, extending the overall service life of the components, occupying less channel space, and increasing the gas flow speed inside the channel. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the filtration device in this utility model;

[0021] Figure 3 This is a schematic diagram of the unfolded structure of the filtration device in this utility model;

[0022] Figure 4 This is a schematic diagram of the fixing device structure in this utility model;

[0023] Figure 5 This is a schematic diagram of the ventilation device in this utility model.

[0024] Explanation of the labels in the diagram:

[0025] 1. Explosion-proof enclosure; 2. Enclosure door; 3. Sliding groove; 4. Filter device; 5. Fixing device; 6. Ventilation device; 401. Mounting ring frame; 402. Sliding strip; 403. Fixing collar; 404. Ring pipe; 405. Snap-fit ​​groove; 406. Filter plate one; 407. Clip strip; 408. Filter plate two; 501. Fixing plate; 502. T-shaped sleeve rod; 503. Spring; 504. Pull ring; 601. Motor; 602. Belt; 603. Pulley; 604. Mounting bracket; 605. Coupling shaft; 606. Fan blade. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1:

[0030] Please see Figure 1-5 An explosion-proof device for testing lithium batteries includes an explosion-proof enclosure 1. A door 2 is rotatably mounted on the front of the explosion-proof enclosure 1. A sliding groove 3 is provided on the front of the door 2. A filter device 4 is slidably mounted inside the sliding groove 3 on the outside of the explosion-proof enclosure 1. A fixing device 5 for fixing the filter device 4 is fixedly provided on the front of the door 2 above the filter device 4. A ventilation device 6 is provided inside the center of the front of the door 2.

[0031] It should be noted that the explosion-proof enclosure 1 in this application is the same component as the prior art document. The internal clamping mechanism for lithium batteries is consistent with that in the prior art document, and the structure inside the enclosure door 2 is also consistent with that in the prior art document. Therefore, this application will not elaborate on this existing mature technology.

[0032] The filter device 4 includes a mounting ring frame 401. A sliding strip 402 is fixedly mounted on the back of the mounting ring frame 401. The sliding strip 402 is slidably mounted inside the sliding groove 3. A fixing collar 403 is fixedly mounted in the middle of the mounting ring frame 401. Ring tubes 404 of the same size are fixedly mounted on both the left and right sides of the inner wall of the mounting ring frame 401. A snap-fit ​​groove 405 is formed on the inner wall of the ring tube 404. A second filter plate 408 is fixedly mounted on the inner side of the mounting ring frame 401 against the outer wall of the door 2. The second filter plate 408 is detachably mounted on the outer side of the inner wall of the mounting ring frame 401. Both ends of the 8 are fixedly installed with locking strips 407. The fixing device 5 includes a fixing plate 501. A T-shaped sleeve rod 502 is movably sleeved inside the fixing plate 501. A pull ring 504 is fixedly connected to the top of the T-shaped sleeve rod 502. A spring 503 is fixedly connected to the bottom side of the top of the T-shaped sleeve rod 502. The bottom end of the spring 503 is fixedly connected to the top surface of the fixing plate 501. One end of the fixing plate 501 is fixedly connected to the outer wall of the door 2. The size of the bottom end of the T-shaped sleeve rod 502 is adapted to the size of the fixing ring 403. The shape of the locking strip 407 is adapted to the shape of the locking groove 405.

[0033] Specifically, the clip 407 can be used in conjunction with the snap-fit ​​groove 405 to snap into the inside of the ring tube 404, and then rotated to complete the snap-fit ​​action. This method can achieve the effect of quick disassembly and assembly. Since there are two ring tubes 404, when one filter plate 406 is in use, the other filter plate 406 can be removed to replace the activated carbon inside, saving the corresponding replacement and disassembly synchronization time. The bottom end of the T-shaped sleeve 502 and the fixed collar 403 are adapted to each other so that the entire installation ring frame 401 can be fixed in the position after replacement, preventing it from sliding left and right and affecting the ventilation and filtration effect.

[0034] The ventilation device 6 includes a motor 601, the output shaft of which is driven by a belt 602. A pulley 603 is driven by the bottom end of the belt 602. A mounting bracket 604 is rotatably mounted on the outer side of the pulley 603. A connecting shaft 605 is fixedly mounted on the inner end of the pulley 603. Several fan blades 606 are fixedly mounted on the surface of the connecting shaft 605. A mounting groove is provided in the middle of the door 2. The shape of the mounting groove is adapted to the shape of the ventilation device 6. The left and right ends of the mounting bracket 604 are fixedly mounted on the inner wall of the door 2. The circular area formed by the rotation of several fan blades 606 is adapted to the area of ​​the filter plate 408.

[0035] Specifically, the motor 601 is installed inside the door 2 above the exhaust duct and driven by the belt 602 to rotate the fan blades 606 to exhaust air. This not only prevents the motor 601 from occupying space inside the exhaust duct, but also prevents the smoke inside the duct from damaging the internal structural components of the motor 601, thus improving the service life of the device.

[0036] The working principle of this utility model is as follows: When flue gas is generated inside the explosion-proof enclosure 1 and needs to be discharged, the motor 601 is started to drive the belt 602 to drive the shaft 605 to rotate continuously to discharge the internal gas. Then, the gas passes through the inside of the second filter plate 408, is adsorbed by the activated carbon placed inside the ring tube 404, and is then discharged to the outside through secondary filtration inside the first filter plate 406. When the activated carbon is used up, the T-shaped sleeve 502 is pulled out to detach it from the inside of the fixing ring 403. Then, the entire installation ring frame 401 is moved so that the other ring tube 404 is moved to the corresponding position. Then, the other T-shaped sleeve 502 is inserted into the inside of the fixing ring 403 to fix the whole. Then, the flue gas continues to be filtered and absorbed. The operator can rotate the other unused first filter plate 406 along the locking strip 407 from the inside of the ring tube 404, remove the locking strip 407 from the inside of the locking groove 405, replace the activated carbon inside the ring tube 404, and finally reset and install the first filter plate 406.

[0037] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. An explosion-proof device for testing lithium batteries, comprising an explosion-proof enclosure (1), characterized in that: The explosion-proof enclosure (1) has a door (2) rotatably mounted on its front side. The door (2) has a sliding groove (3) on its front side. A filter device (4) is slidably mounted inside the sliding groove (3) on the outside of the explosion-proof enclosure (1). A fixing device (5) for fixing the filter device (4) is fixedly located above the filter device (4) on the front side of the door (2). A ventilation device (6) is provided inside the center of the front side of the door (2).

2. The explosion-proof device for testing lithium batteries according to claim 1, characterized in that: The filter device (4) includes a mounting ring frame (401), on the back of which a sliding strip (402) is fixedly mounted, and the sliding strip (402) is slidably mounted inside the sliding groove (3).

3. The explosion-proof device for testing lithium batteries according to claim 2, characterized in that: A fixing ring (403) is fixedly installed in the middle of the mounting ring frame (401). Ring tubes (404) of the same size are fixedly installed on both the left and right sides of the inner wall of the mounting ring frame (401). The inner wall of the ring tube (404) is provided with a snap-fit ​​groove (405). The inner side of the mounting ring frame (401) is fixedly installed against the outer wall of the box door (2). The outer side of the inner wall of the mounting ring frame (401) is detachably installed with the second filter plate (408). The left and right ends of the second filter plate (408) are fixedly installed with clips (407).

4. The explosion-proof device for lithium battery testing according to claim 3, characterized in that: The shape of the card strip (407) is adapted to the shape of the card slot (405).

5. The explosion-proof device for testing lithium batteries according to claim 1, characterized in that: The fixing device (5) includes a fixing plate (501), a T-shaped sleeve rod (502) is movably sleeved inside the fixing plate (501), a pull ring (504) is fixedly connected to the top of the T-shaped sleeve rod (502), a spring (503) is fixedly connected to the bottom side of the top of the T-shaped sleeve rod (502), the bottom end of the spring (503) is fixedly connected to the top surface of the fixing plate (501), one end of the fixing plate (501) is fixedly connected to the outer wall of the box door (2), and the size of the bottom end of the T-shaped sleeve rod (502) is adapted to the size of the fixing ring (403).

6. The explosion-proof device for testing lithium batteries according to claim 1, characterized in that: The ventilation device (6) includes a motor (601), the output shaft of the motor (601) is driven by a belt (602), the bottom end of the belt (602) is driven by a pulley (603), the outer side of the pulley (603) is rotatably mounted with a mounting bracket (604), the inner end of the pulley (603) is fixedly mounted with a connecting shaft (605), the surface of the connecting shaft (605) is fixedly mounted with several fan blades (606), the left and right ends of the mounting bracket (604) are fixedly mounted on the inner wall of the box door (2), and the circular area formed by the rotation of several fan blades (606) is adapted to the area of ​​the filter plate (408).

7. The explosion-proof device for testing lithium batteries according to claim 1, characterized in that: The box door (2) has an installation groove in the middle, and the shape of the installation groove is compatible with the shape of the ventilation device (6).

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