Explosion venting device for lithium battery bin

Abstract

The utility model relates to the technical field of lithium battery bin explosion venting devices, and discloses a lithium battery bin explosion venting device which comprises an explosion venting box, a rotating door is rotatably connected to the left side of the inner wall of the explosion venting box, a second connecting shaft is slidably connected to the position, close to the front side, of the inner wall of the rotating door, and a first spring is fixedly connected to the left side end of the outer wall of the second connecting shaft. The other end of the first spring is fixed to the front side of the inner wall of the rotating door, extrusion plates are fixedly connected to the upper end and the lower end of the right side of the outer wall of the second connecting shaft, a third spring is fixedly connected between every two adjacent extrusion plates, and a limiting plate is fixedly connected to the position, close to the front side, of the inner wall of the rotating door. And the outer wall of the limiting plate is in contact with the inner wall of the extrusion plate. According to the explosion venting device, the rotating door is rotationally connected to the left side of the outer wall of the explosion venting box, meanwhile, the second connecting shaft slides to the position, close to the front side, of the inner wall of the rotating door, the function of rapidly opening the rotating door is achieved, operation is easy and convenient, and meanwhile the stability of the rotating door is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery compartment explosion relief devices, and in particular to a lithium battery compartment explosion relief device. Background Technology

[0002] With the rapid development of new energy vehicles, energy storage power stations, and portable electronic devices, lithium batteries have become the mainstream energy storage component in the market due to their high energy density and long cycle life. However, lithium batteries are prone to thermal runaway under conditions of overcharging, over-discharging, high temperature, collision, and internal short circuit. This causes a large amount of high-temperature, high-pressure gas and flammable materials to be rapidly generated inside the battery. When the pressure and temperature inside the lithium battery compartment reach critical values, if the pressure cannot be released in time, it will cause a violent explosion and combustion, resulting in serious casualties and property damage. According to statistics, in recent years, fire and explosion accidents caused by lithium battery thermal runaway have been on the rise globally. In the field of new energy vehicles, the direct economic losses caused by related accidents amount to billions of yuan annually, which seriously restricts the safe development of the lithium battery industry. At the same time, existing explosion relief devices lack effective control over the direction and intensity of the explosion relief. During the explosion relief process, high-temperature, high-pressure gas and flames may spray onto surrounding equipment and personnel, causing secondary injuries. Furthermore, without effective protection for the lithium battery compartment after the explosion relief, outside air may flow back into the compartment, exacerbating the risk of combustion and explosion of the lithium battery.

[0003] Currently available lithium battery compartment explosion relief devices mainly consist of pressure sensors and control units. Existing devices suffer from slow response, low explosion relief efficiency, and poor reliability. Traditional devices often use a single pressure sensor for triggering, relying solely on pressure changes to determine whether to initiate explosion relief. When a small amount of gas is generated in the early stages of lithium battery thermal runaway, the pressure change is not significant enough to trigger explosion relief in time, leading to continuous pressure accumulation within the compartment and delaying the optimal explosion relief time. Furthermore, in extreme high-temperature and complex vibration environments, the structure and sensors of traditional explosion relief devices are prone to failure, causing the device to malfunction. In addition to being unable to function effectively at critical moments, the structural design of existing lithium battery compartment explosion relief devices also increases the difficulty of cleaning the inner walls. Many explosion relief devices adopt an integrated, closed structure with a complex inner wall structure containing a large number of dead corners and gaps. When an explosion occurs, the electrolyte, active materials, and combustion residues generated inside the lithium battery are very likely to remain in these hard-to-reach areas. Taking the common pipeline-type explosion relief channel as an example, impurities easily accumulate in its internal bends and corners. Ordinary cleaning tools cannot penetrate into them, while special cleaning equipment is difficult to adapt to its complex structure, making it difficult to carry out cleaning work effectively. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a lithium battery compartment explosion relief device, which aims to improve the problem that traditional lithium battery compartment explosion relief devices in the prior art are not convenient for cleaning the inner wall.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a lithium battery compartment explosion relief device, including an explosion relief box, a rotating door rotatably connected to the left side of the inner wall of the explosion relief box, a connecting shaft two slidably connected to the inner wall of the rotating door near the front side, a spring one fixedly connected to the left end of the outer wall of the connecting shaft two, the other end of the spring one fixedly fixed to the front side of the inner wall of the rotating door, compression plates fixedly connected to the upper and lower ends of the outer wall of the connecting shaft two, a spring three fixedly connected between adjacent compression plates, a limiting plate fixedly connected to the inner wall of the rotating door near the front side, the outer wall of the limiting plate contacting the inner wall of the compression plate, a fixing sleeve fixedly connected to the upper and lower ends of the inner wall of the rotating door near the front side, a locking shaft slidably connected to the inner wall of the fixing sleeve, a spring two fixedly connected to the bottom of the outer wall of the locking shaft, the other end of the spring two fixed to the bottom of the outer wall of the fixing sleeve, multiple locking shafts locking into the inner wall of the rotating door, and the explosion relief box is provided with a disassembly mechanism for fixing the device.

[0006] As a further description of the above technical solution:

[0007] The disassembly mechanism includes fixed blocks. The outer walls of multiple fixed blocks are fixedly connected to the four corners at the bottom of the outer wall of the explosion relief box. A connecting shaft is slidably connected to the top of the inner wall of the fixed block. An adjuster is rotatably connected to the top of the connecting shaft. A sliding shaft is fixedly connected to the bottom of the connecting shaft. Clamping plates are fixedly connected to the front and rear sides of the outer wall of the sliding shaft. Rotating shafts are rotatably connected to the inner walls of multiple clamping plates. The two ends of multiple rotating shafts are fixed to the inner walls of the fixed blocks. The bottom of the clamping plates is in contact with the fixed shafts.

[0008] As a further description of the above technical solution:

[0009] Protective strips are fixedly connected to the upper and lower ends of the left side of the outer wall of the revolving door, and protective pads are fixedly connected to the four corners of the left side of the outer wall of the revolving door.

[0010] As a further description of the above technical solution:

[0011] A handle is fixedly connected to the left side of the outer wall of the rotating door near the front end, and a connecting pipe is fixedly connected to the rear side of the outer wall of the explosion relief box.

[0012] As a further description of the above technical solution:

[0013] The explosion relief box has two handles fixedly connected to the top left and right sides of its outer wall, and the outer walls of the multiple handles are fixedly connected to anti-slip sleeves.

[0014] As a further description of the above technical solution:

[0015] The outer walls of the explosion relief box are fixedly connected to soft pads on the left and right sides near the top, and mounting holes are provided at the four corners of the bottom of the outer walls of the explosion relief box near the edge.

[0016] As a further description of the above technical solution:

[0017] Protective strips are fixedly connected to the front and rear sides of the bottom of the outer wall of the explosion relief box, and protective plates are fixedly connected to the left and right sides of the bottom of the outer wall of the explosion relief box.

[0018] As a further description of the above technical solution:

[0019] Square pads are fixedly connected to the bottom left and right ends of the front side of the outer wall of the explosion relief box, and protective plates are fixedly connected to the top left and right ends of the outer wall of the explosion relief box.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, a rotating door is rotatably connected to the left side of the outer wall of the explosion relief box. At the same time, a connecting shaft two slides on the inner wall of the rotating door near the front. The connecting shaft two can move to the right under the elastic action of a spring fixed on the inner wall of the rotating door. The upper and lower ends of the outer wall of the spring one are rotatably connected to a pressing plate. By adjusting the connecting shaft two, the pressing plate can retract inward under the limiting action of the limiting plate, and the outer wall of the locking shaft can retract inward under the elastic action of the spring two, realizing the function of quickly opening the rotating door. While being easy to operate, it also ensures its stability.

[0022] 2. In this utility model, fixing blocks are fixed at the four corners of the outer wall of the explosion relief box. The top of the inner wall of the fixing block is slidably connected to the connecting shaft. By adjusting the adjuster connected to the top of the connecting shaft, the inclined surface can make contact with the fixing block. Thus, the bottom of the outer wall of the two clamping plates is engaged in the inner wall of the fixing shaft, realizing the function of quickly fixing the explosion relief box. While meeting the fixing requirements, it is convenient to operate and the fixing is more stable, meeting the usage requirements. Attached Figure Description

[0023] Figure 1 This is a perspective view of the front side of the explosion relief box of a lithium battery compartment explosion relief device proposed in this utility model;

[0024] Figure 2 This is a structural diagram of the handle of a lithium battery compartment explosion relief device proposed in this utility model;

[0025] Figure 3 This is a partial structural diagram of the rotating door of a lithium battery compartment explosion relief device proposed in this utility model;

[0026] Figure 4This is a schematic diagram of the fixed sleeve structure of a lithium battery compartment explosion relief device proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the locking clamp structure of a lithium battery compartment explosion relief device proposed in this utility model.

[0028] Legend:

[0029] 1. Explosion relief box; 2. Disassembly mechanism; 201. Fixing block; 202. Rotating shaft; 203. Connecting shaft one; 204. Sliding shaft; 205. Clamping plate; 206. Fixing shaft; 207. Adjuster; 3. Rotating door; 4. Connecting shaft two; 5. Spring one; 6. Spring two; 7. Limiting plate; 8. Squeezing plate; 9. Spring three; 10. Fixing sleeve; 11. Clamping shaft; 12. Protective pad; 13. Protective strip; 14. Handle one; 15. Soft pad; 16. Protective strip; 17. Connecting pipe; 18. Handle two; 19. Anti-slip sleeve; 20. Protective plate; 21. Protective plate; 22. Square pad; 23. Mounting hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 2 - Appendix Figure 4This utility model provides an embodiment of a lithium battery compartment explosion relief device, comprising an explosion relief box 1. A rotating door 3 is rotatably connected to the left side of the inner wall of the explosion relief box 1. A connecting shaft 4 is slidably connected to the inner wall of the rotating door 3 near the front side. A spring 5 is fixedly connected to the left end of the outer wall of the connecting shaft 4. The other end of the spring 5 is fixed to the front side of the inner wall of the rotating door 3. Squeezing plates 8 are fixedly connected to the upper and lower ends of the outer wall of the connecting shaft 4. A spring 9 is fixedly connected between adjacent squeezing plates 8. A limiting plate 7 is fixedly connected to the inner wall of the rotating door 3 near the front side. The outer wall of the limiting plate 7 contacts the inner wall of the squeezing plate 8. A fixing sleeve 10 is fixedly connected to the upper and lower ends of the inner wall of the rotating door 3 near the front side. A clip is slidably connected to the inner wall of the fixing sleeve 10. A locking shaft 11 is fixedly connected to the bottom of its outer wall, and the other end of the spring 6 is fixed to the bottom of the outer wall of the fixing sleeve 10. Fixing sleeves 10 are fixedly connected to the upper and lower ends of the inner wall of the rotating door 3 near the front. A locking shaft 11 is installed on the inner wall of the fixing sleeve 10 by a sliding connection. A spring 6 is fixedly connected to the bottom of the outer wall of the locking shaft 11, and the other end of the spring 6 is fixed to the bottom of the outer wall of the fixing sleeve 10. Multiple locking shafts 11 are evenly locked on the inner wall of the rotating door 3 to ensure the stability and safety of the rotating door 3. Multiple locking shafts 11 are locked on the inner wall of the rotating door 3. The explosion relief box 1 is equipped with a disassembly mechanism 2, which is used to fix the device.

[0032] Specifically, a rotatable rotating door 3 is installed on the left side of the inner wall of the explosion relief box 1 via a rotating connection. A connecting shaft 4 is slidably connected to the inner wall of the rotating door 3 near the front. A spring 5 is fixedly connected to the left end of the outer wall of the connecting shaft 4, and the other end of the spring 5 is firmly fixed to the front of the inner wall of the rotating door 3. Furthermore, compression plates 8 are fixedly connected to the upper and lower ends of the right side of the outer wall of the connecting shaft 4, and a spring 9 is fixedly connected between adjacent compression plates 8. To limit the movement range of the rotating door 3, a limiting plate 7 is fixedly connected to the inner wall of the rotating door 3 near the front. The outer wall of the limiting plate 7 contacts the inner wall of the compression plates 8, serving a limiting function. In addition, a disassembly mechanism 2 is specially provided in the explosion relief box 1. The main function of the disassembly mechanism 2 is to fix the entire device so that it can be easily disassembled and maintained when needed, improving the ease of use of the explosion relief box 1 and greatly enhancing its safety and reliability.

[0033] Please see the appendix Figure 3 - Appendix Figure 5The disassembly mechanism 2 includes a fixing block 201. The outer walls of multiple fixing blocks 201 are fixedly connected to the four corners of the bottom of the outer wall of the explosion relief box 1. The top of the inner wall of the fixing block 201 is slidably connected to a connecting shaft 203. The top of the connecting shaft 203 is rotatably connected to an adjuster 207. The bottom of the connecting shaft 203 is fixedly connected to a sliding shaft 204. The front and rear sides of the outer wall of the sliding shaft 204 are fixedly connected to locking plates 205. The inner walls of multiple locking plates 205 are rotatably connected to rotating shafts 202. Multiple locking plates 205 are fixedly connected to the front and rear sides of the outer wall of the sliding shaft 204. The locking plates 205 are all rotatably connected to rotating shafts 202 at their inner wall positions. The two ends of the multiple rotating shafts 202 are fixed to the inner wall of the fixing block 201. The bottom of the locking plates 205 is in contact with the fixing shaft 206.

[0034] Specifically, a connecting shaft 203 is slidably connected to the top of the inner wall of the fixed block 201. The top part of the connecting shaft 203 is rotatably connected to an adjuster 207 to ensure the flexible rotation of the adjuster 207. At the same time, the bottom part of the connecting shaft 203 is fixedly connected to a sliding shaft 204 to ensure its stability during sliding. Both ends of these rotating shafts 202 are firmly fixed to the inner wall of the fixed block 201 to ensure the stability and reliability of the entire structure. In addition, the bottom part of the clamping plate 205 is in contact with a fixed shaft 206, thereby playing a supporting and positioning role during the movement of the structure.

[0035] Please see the appendix Figure 1 - Appendix Figure 3 Protective strips 13 are fixedly connected to the upper and lower ends of the left side of the outer wall of the rotating door 3. Protective pads 12 are fixedly connected to the four corners of the left side of the outer wall of the rotating door 3. A handle 14 is fixedly connected to the left side of the outer wall of the rotating door 3 near the front end. A connecting pipe 17 is fixedly connected to the rear side of the outer wall of the explosion relief box 1. A handle 14 is also fixedly installed on the left side of the outer wall of the rotating door 3 near the front end through a sturdy connection. The handle 14 makes it easy for users to open or close the rotating door 3, providing a convenient operating experience. At the same time, a connecting pipe 17 is fixedly installed on the rear side of the outer wall of the explosion relief box 1 through a sturdy connection. A handle 2 18 is fixedly connected to the top left and right sides of the outer wall of the explosion relief box 1. Anti-slip sleeves 19 are fixedly connected to the outer walls of multiple handles 2 18.

[0036] Specifically, protective strips 13 are securely installed on the left side of the outer wall of the revolving door 3. The main function of these protective strips 13 is to prevent accidental collisions during the opening or closing of the revolving door 3, thereby effectively protecting the door and the user's safety. In addition, protective pads 12 are reliably fixed at the four corners of the left side of the outer wall of the revolving door 3. These protective pads 12 can effectively buffer and reduce friction and impact between the door and the surrounding environment or objects during rotation, further improving safety. Handles 18 are securely installed on the top of the outer wall of the explosion relief box 1 on both the left and right sides. These handles 18 provide convenient gripping points when the explosion relief box 1 needs to be moved or transported. Anti-slip sleeves 19 are securely installed on the outer surface of the multiple handles 18. The main function of these anti-slip sleeves 19 is to increase the friction of the handles 18, preventing accidents caused by slipping during use, and improving the overall safety and operability of the equipment.

[0037] Please see the appendix Figure 1 - Appendix Figure 3 The outer walls of the explosion relief box 1 are fixedly connected with soft pads 15 on the left and right sides near the top. The four corners of the bottom of the outer walls of the explosion relief box 1 are provided with mounting holes 23 near the edge. The outer walls of the explosion relief box 1 are fixedly connected with protective strips 16 on the front and back sides of the bottom. The outer walls of the explosion relief box 1 are fixedly connected with protective plates 21 on the left and right sides of the bottom. The outer walls of the explosion relief box 1 are also fixedly connected with protective strips 16 on the front and back sides. These protective strips 16 can effectively prevent the explosion relief box 1 from being impacted and worn during transportation or use. The outer walls of the explosion relief box 1 are fixedly connected with square pads 22 on the left and right ends of the bottom front side. The outer walls of the explosion relief box 1 are fixedly connected with protective plates 20 on the left and right ends near the top.

[0038] Specifically, soft pads 15 are firmly fixed to the left and right sides of the outer wall of the explosion relief box 1 near the top. These soft pads 15 are mainly used to absorb shock and buffer during the explosion relief process to protect the explosion relief box 1 and its surrounding environment. At the same time, mounting holes 23 are opened at the four corners of the bottom of the outer wall of the explosion relief box 1 near the edge for installation and fixing. These mounting holes 23 facilitate the secure installation of the explosion relief box 1 in the designated position to ensure its stability. Square pads 22 are fixed to the left and right ends of the bottom front side of the outer wall of the explosion relief box 1. These square pads 22 are mainly used to support and balance the explosion relief box 1, making it more stable during placement and use. Finally, protective plates 20 are firmly fixed to the left and right ends of the outer wall of the explosion relief box 1 near the top. These protective plates 20 can effectively prevent the top from being impacted by external forces, ensuring the overall structural safety and reliability of the explosion relief box 1.

[0039] Working principle: A rotating door 3 is rotatably connected to the left side of the outer wall of the explosion relief box 1. At the same time, a connecting shaft 4 slides on the inner wall of the rotating door 3 near the front. The connecting shaft 4 can move to the right under the elastic action of a spring 5 fixed to the inner wall of the rotating door 3. The upper and lower ends of the outer wall of the spring 5 are rotatably connected to a pressing plate 8. The pressing plate 8 can contact the locking shaft 11 under the elastic action of a spring 9, so that the locking shaft 11 can be locked in the inner wall of the explosion relief box 1 to achieve the function of sealing and fixing. By adjusting the connecting shaft 4, the pressing plate 8 can retract inward under the limiting action of the limiting plate 7, and the outer wall of the locking shaft 11 can retract inward under the elastic action of a spring 6, so as to achieve the function of quickly opening the rotating door 3. While being easy to operate, it also ensures its stability.

[0040] Fixing blocks 201 are fixed at the four corners of the outer wall of the explosion relief box 1. The top of the inner wall of the fixing block 201 is slidably connected to the connecting shaft 203. By adjusting the adjuster 207 connected to the top of the connecting shaft 203, its inclined surface can make contact with the fixing block 201. After contact, the connecting shaft 203 can drive the sliding shaft 204 to move upward. The locking plates 205 fixed on the front and rear sides of the sliding shaft 204 can rotate along the outer wall of the locking plates 205. Thus, the bottom of the outer walls of the two locking plates 205 are locked in the inner wall of the fixing shaft 206, realizing the function of quickly fixing the explosion relief box 1. While meeting the fixing requirements, it is easy to operate and the fixing is more stable, meeting the usage requirements.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery compartment explosion relief device, comprising an explosion relief box (1), characterized in that: The explosion relief box (1) has a rotating door (3) rotatably connected to the left side of its inner wall. A connecting shaft (4) is slidably connected to the inner wall of the rotating door (3) near the front. A spring (5) is fixedly connected to the left end of the outer wall of the connecting shaft (4). The other end of the spring (5) is fixed to the front side of the inner wall of the rotating door (3). Squeezing plates (8) are fixedly connected to the upper and lower ends of the outer right side of the connecting shaft (4). A spring (9) is fixedly connected between the two adjacent squeezing plates (8). A limiting plate (7) is fixedly connected to the inner wall of the rotating door (3) near the front. (7) The outer wall of the rotating door (3) is in contact with the inner wall of the extrusion plate (8). The upper and lower ends of the inner wall of the rotating door (3) are fixedly connected to the upper and lower ends of the front side. The inner wall of the fixed sleeve (10) is slidably connected to the locking shaft (11). The bottom of the outer wall of the locking shaft (11) is fixedly connected to the second spring (6). The other end of the second spring (6) is fixed to the bottom of the outer wall of the fixed sleeve (10). Multiple locking shafts (11) are locked in the inner wall of the rotating door (3). The explosion relief box (1) is provided with a disassembly mechanism (2). The disassembly mechanism (2) is used to fix the device.

2. The lithium battery compartment explosion relief device according to claim 1, characterized in that: The disassembly mechanism (2) includes a fixing block (201). The outer walls of multiple fixing blocks (201) are fixedly connected to the four corners of the bottom of the outer wall of the explosion relief box (1). A connecting shaft (203) is slidably connected to the top of the inner wall of the fixing block (201). An adjuster (207) is rotatably connected to the top of the connecting shaft (203). A sliding shaft (204) is fixedly connected to the bottom of the connecting shaft (203). A locking plate (205) is fixedly connected to the front and rear sides of the outer wall of the sliding shaft (204). A rotating shaft (202) is rotatably connected to the inner wall of multiple locking plates (205). The two ends of multiple rotating shafts (202) are fixed to the inner wall of the fixing block (201). The bottom of the locking plate (205) is in contact with the fixing shaft (206).

3. The lithium battery compartment explosion relief device according to claim 1, characterized in that: Protective strips (13) are fixedly connected to the upper and lower ends of the left side of the outer wall of the rotating door (3), and protective pads (12) are fixedly connected to the four corners of the left side of the outer wall of the rotating door (3).

4. The lithium battery compartment explosion relief device according to claim 1, characterized in that: A handle (14) is fixedly connected to the left side of the outer wall of the rotating door (3) near the front end, and a connecting pipe (17) is fixedly connected to the rear side of the outer wall of the explosion relief box (1).

5. The lithium battery compartment explosion relief device according to claim 1, characterized in that: The explosion relief box (1) is fixedly connected to the top left and right sides of the outer wall of each handle (18), and the outer walls of each handle (18) are fixedly connected to anti-slip sleeves (19).

6. The lithium battery compartment explosion relief device according to claim 1, characterized in that: The outer walls of the explosion relief box (1) are fixedly connected with soft pads (15) on the left and right sides near the top, and the four corners of the bottom of the outer walls of the explosion relief box (1) are provided with mounting holes (23) near the edge.

7. The lithium battery compartment explosion relief device according to claim 1, characterized in that: The explosion relief box (1) has protective strips (16) fixedly connected to the bottom front and rear sides of the outer wall, and protective plates (21) fixedly connected to the bottom left and right sides of the outer wall.

8. The lithium battery compartment explosion relief device according to claim 1, characterized in that: Square pads (22) are fixedly connected to the bottom left and right ends of the front side of the outer wall of the explosion relief box (1), and protective plates (20) are fixedly connected to the top left and right ends of the outer wall of the explosion relief box (1).

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