Explosion-proof lithium ion storage battery power supply pressure relief device for coal mine
By designing a pressure relief mechanism and explosion-proof mesh structure that dynamically adjusts the pressure relief path, the problem of low efficiency in existing explosion-proof lithium-ion battery pressure relief devices for coal mines has been solved. This achieves effective pressure relief and safe release under different pressure levels, thereby improving equipment safety.
Patent Information
- Application Number
- CN202422694893.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-06
AI Technical Summary
Existing pressure relief devices for explosion-proof lithium-ion batteries used in coal mines cannot dynamically adjust according to the actual rate of pressure increase, resulting in low pressure relief efficiency and increased safety risks.
An explosion-proof lithium-ion battery power supply pressure relief device including a pressure relief mechanism was designed. Through the coordinated movement of the sealing plug and the connecting plate, the pressure relief path is dynamically adjusted according to pressure changes to ensure effective pressure release under different pressure levels. An explosion-proof mesh and an explosion-proof pressure relief valve are used to improve safety.
It enables effective pressure release at different pressure levels, improves pressure relief efficiency, reduces safety risks, prevents flame spread and dust ingress, and ensures equipment safety.
Smart Images
Figure CN223583165U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of explosion -proof technology, specifically is a coal mine explosion -proof lithium ion battery power supply pressure -relief device. BACKGROUND
[0002] The coal mine explosion -proof lithium ion battery power supply pressure -relief device is designed for high-risk environments such as coal mines, and is intended to ensure that the battery can safely and effectively release internal pressure under abnormal conditions and prevent the occurrence of safety accidents such as explosions.
[0003] At present, the traditional pressure -relief device generally uses an explosion -proof sheet for pressure relief. Specifically, when the pressure is abnormal due to short circuit, overcharge, etc. during the operation of the explosion -proof lithium ion battery, the internal pressure of the battery will gradually accumulate. Once the pressure in the battery reaches the preset rupture pressure value, the explosion -proof sheet will rupture, and then the pressure will be released instantaneously. However, the pressure relief efficiency of the prior art is fixed and cannot be dynamically adjusted according to the actual growth rate of the pressure, which may result in delayed pressure release, reduced pressure relief efficiency, and increased safety risks. SUMMARY
[0004] To solve the problems raised in the background art, the utility model provides a coal mine explosion -proof lithium ion battery power supply pressure -relief device.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a coal mine explosion -proof lithium ion battery power supply pressure -relief device, comprising a shell, a battery body is arranged at the bottom of the inside of the shell, a ventilation hole one is formed in one side of the inside of the battery body, a fixed groove is formed in the inside of the battery body at the top of the ventilation hole one, an installation groove is formed in one side of the outer surface of the shell.
[0006] A pressure -relief mechanism is arranged at the top of the fixed groove. The pressure -relief mechanism comprises a spring, the spring is fixedly connected to the top of the fixed groove, a sealing plug is fixedly installed at the bottom of the spring in the ventilation hole one, a connecting plate is fixedly installed at the top of the sealing plug, a ventilation hole two is formed in the opposite side of the ventilation hole one in the inside of the battery body, a blocking block is slidably connected in the inside of the ventilation hole two, square plates are fixedly installed at the top of the connecting plate on both ends of the blocking block, a ventilation pipe one is fixedly installed on one side of the outer surface of the battery body on one side of the ventilation hole one, and a ventilation pipe two is fixedly installed on one side of the outer surface of the battery body on one side of the ventilation hole two.
[0007] Preferably, ventilation holes three and four are formed in one side of the outer surface of the shell, and the other ends of the ventilation pipe one and the ventilation pipe two are fixedly connected to one side of the ventilation hole three and the ventilation hole four.
[0008] Preferably, the inside of the vent hole three is provided with an explosion-proof net one, and the inside of the vent hole four is provided with an explosion-proof net two.
[0009] Preferably, the surface of the explosion-proof net one and the explosion-proof net two is fixedly provided with a U-shaped plate located in the inside of the mounting groove, each group of the U-shaped plate is four, and the U-shaped plates are arrayed on the surface of the explosion-proof net one and the explosion-proof net two.
[0010] Preferably, the inside of the bottom end of the blocking block is provided with a metal block, and the inside of the bottom end of the vent hole two is provided with a magnet located at the bottom end of the metal block.
[0011] Preferably, the surface of the shell is fixedly provided with a mounting plate at both ends, and the mounting plate is designed to be transversely symmetrical about the center of the shell.
[0012] Preferably, the sealing plug is designed to be semicircular, the surface of the sealing plug is fully matched with the inner wall of the vent hole one, and the surface of the blocking block is matched with the inner wall of the vent hole two.
[0013] Preferably, one side of the surface of the shell is provided with three explosion-proof pressure relief valves, and one side of the surface of the shell is provided with a socket.
[0014] Compared with the prior art, the utility model has the advantages that:
[0015] The utility model discloses a sealing plug is pushed up by gas, then gas is discharged from the inside of vent hole three through vent hole one, when the pressure in the battery body continuously rises, the distance of the sealing plug is increased, then the connecting plate is moved, then the moving connecting plate pushes square plate and blocking block up, because vent hole one and vent hole two are mutually penetrated, then the gas with pressure also enters the inside of vent hole two, then the gas is discharged from the inside of vent hole four through vent hole two, finally the sealing plug is pushed up by the gas with pressure, thereby the battery body can be relieved, when the pressure is larger, the connecting plate pushes square plate and blocking block up, then vent hole two can also relieve, thereby ensuring that the equipment can effectively release pressure under different pressure levels, and the pressure relief efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a structural schematic view of the utility model;
[0017] Figure 2 It is a schematic view of the utility model oblique equipment;
[0018] Figure 3 It is a schematic view of the utility model cut shell;
[0019] Figure 4 It is a schematic view of the utility model cut battery body;
[0020] Figure 5 It is the display schematic view of the air hole two of the utility model;
[0021] Figure 6 It is the display schematic view of the air hole one of the utility model;
[0022] Figure 7 It is the enlarged schematic view of A in the utility model Figure 3 ;
[0023] Figure 8 It is the enlarged schematic view of B in the utility model Figure 4 .
[0024] In the figure: 1, shell; 2, battery body; 3, air hole one; 4, fixed groove; 5, spring; 6, sealing plug; 7, connecting plate; 8, air hole two; 9, plugging block; 10, mounting plate; 11, square plate; 12, air pipe one; 13, air pipe two; 14, air hole three; 15, metal block; 16, air hole four; 17, explosion-proof net one; 18, explosion-proof net two; 19, U-shaped plate; 20, mounting groove; 21, magnet; 22, explosion-proof pressure relief valve; 23, socket. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0026] As Figures 1 to 8 shown, the utility model provides a kind of explosion-proof lithium ion battery power supply pressure relief device for coal mine, including shell 1, the bottom of the inside of shell 1 is provided with battery body 2, the inside of battery body 2 is opened in one side and is provided with air hole one 3, the inside of battery body 2 is opened and is provided with fixed groove 4 located at the top of air hole one 3, the outside surface of shell 1 is opened in one side and is provided with mounting groove 20;
[0027] The pressure relief mechanism is located at the top of the fixed groove 4. The pressure relief mechanism includes a spring 5, which is fixedly connected to the top of the fixed groove 4. A sealing plug 6 located inside the vent hole 3 is fixedly installed at the bottom of the spring 5. A connecting plate 7 is fixedly installed at the top of the sealing plug 6. A second vent hole 8 is opened inside the battery body 2, located on the opposite side of the first vent hole 3. A sealing block 9 is slidably connected inside the second vent hole 8. A square plate 11 located at the top of the connecting plate 7 is fixedly installed at both ends of the sealing block 9. A vent pipe 12 located on the side of the first vent hole 3 is fixedly installed on one side of the outer surface of the battery body 2. A second vent pipe 13 located on the side of the second vent hole 8 is fixedly installed on one side of the outer surface of the battery body 2.
[0028] Using the above scheme: when the pressure of the battery body 2 rises abnormally due to short circuit, overcharge or other reasons, pressurized gas will enter the interior of the vent hole 3. Then the gas will come into contact with the surface of the sealing plug 6 and push the sealing plug 6 upward. When the sealing plug 6 moves upward, the spring 5 will be compressed, and the sealing plug 6 will unblock the vent hole 3. Then the gas will pass through the vent hole 3 and be discharged from the interior of the vent pipe 12.
[0029] As the pressure inside the battery body 2 continues to rise, the sealing plug 6 will move upward a greater distance. As the sealing plug 6 moves, the connecting plate 7 will move along with it. Then, the top of the connecting plate 7 will contact the bottom of the square plate 11, and the connecting plate 7 will push the square plate 11 upward. The square plate 11 will then drive the sealing block 9 upward, and the sealing block 9 will then unblock the vent hole 2 8. Since the vent hole 1 3 and the vent hole 2 8 are interconnected, pressurized gas will also enter the interior of the vent hole 2 8. Then, the gas will pass through the vent hole 2 8 and be discharged from the interior of the vent pipe 2 13. Finally, the pressurized gas will push the sealing plug 6 upward, thereby depressurizing the battery body 2. When the pressure is high, the connecting plate 7 will push the square plate 11 and the sealing block 9 upward, and the vent hole 2 8 can also depressurize it, thus ensuring that the equipment can effectively release pressure under different pressure levels and improving the pressure relief efficiency.
[0030] like Figure 7 As shown, ventilation holes 14 and 16 are respectively provided on one side of the outer surface of the shell 1, and the other end of ventilation pipe 12 and ventilation pipe 2 13 are fixedly connected to one side of ventilation holes 14 and 16. Explosion-proof mesh 17 is provided inside ventilation hole 14, and explosion-proof mesh 2 18 is provided inside ventilation hole 16.
[0031] The above-mentioned scheme is adopted: through the design of vent hole 3 14 and vent hole 4 16, since the other end of vent pipe 1 12 and vent pipe 2 13 are fixedly connected to one side of vent hole 3 14 and vent hole 4 16, when gas is discharged from vent pipe 1 12 and vent pipe 2 13, the gas will pass through vent pipe 1 12 and vent pipe 2 13, and then be discharged from the inside of vent hole 3 14 and vent hole 4 16 to the outside of the shell 1. Through the design of explosion-proof mesh 1 17 and explosion-proof mesh 2 18, the explosion-proof mesh 1 17 and explosion-proof mesh 2 18 can effectively isolate the flame that may be generated inside the battery body 2, prevent the flame from spreading outward through vent pipe 1 12 and vent pipe 2 13, and prevent the spread and expansion of the fire. In addition, the explosion-proof mesh 1 17 and explosion-proof mesh 2 18 can block dust and prevent dust from entering the inside of the battery body 2 through vent hole 3 14 and vent hole 4 16.
[0032] like Figure 7 and Figure 8 As shown, U-shaped plates 19 are fixedly installed inside the mounting groove 20 on the surfaces of explosion-proof mesh 17 and explosion-proof mesh 28. There are four U-shaped plates 19 in each group, and they are arranged in an array on the surfaces of explosion-proof mesh 17 and explosion-proof mesh 28. A metal block 15 is provided inside the bottom end of the sealing block 9, and a magnet 21 is provided at the bottom end of the metal block 15 inside the vent hole 28.
[0033] Using the above scheme: Through the design of the U-shaped plate 19, explosion-proof mesh 17 and explosion-proof mesh 2 18 can be placed inside the ventilation holes 3 14 and 4 16 respectively. Then, the U-shaped plate 19 is inserted into the mounting groove 20. After the U-shaped plate 19 is inside the mounting groove 20, fixing bolts can be inserted into the U-shaped plate 19, thereby fixing explosion-proof mesh 17 and explosion-proof mesh 2 18 inside the ventilation holes 3 14 and 4 16. This is achieved through the metal block 15 and magnet 21. In this design, after the inclined plane of the equipment is completed, the spring 5 will return to its original position, and then the spring 5 will push the sealing plug 6 to return to its original position. In this way, the sealing plug 6 will re-seal the vent hole 3. Then the connecting plate 7 will move away from the bottom end of the vent hole 8. Next, the sealing block 9 will descend, and then the bottom end of the metal block 15 will contact the bottom end of the magnet 21. In this way, the metal block 15 will be attracted to the surface of the magnet 21, thereby fixing the sealing block 9. The sealing block 9 will then re-seal the vent hole 8.
[0034] like Figure 2 , Figure 5 and Figure 6 As shown, mounting plates 10 are fixedly installed at both ends of the surface of the housing 1. The mounting plates 10 are symmetrically designed about the center of the housing 1. The sealing plug 6 is semi-circular and the surface of the sealing plug 6 is fully in contact with the inner wall of the vent hole 1 3. The surface of the sealing block 9 is in contact with the inner wall of the vent hole 2 8.
[0035] By the design of the mounting plate 10, the fixing bolt can be inserted into the interior of the mounting plate 10, and the entire device can be fixed at a preset position, and by the design of the sealing plug 6, since the sealing plug 6 is designed in a semicircular shape, the sealing plug 6 can be fully attached to the inner wall of the air hole one 3, and the surface of the blocking block 9 is attached to the inner wall of the air hole two 8, thereby improving the blocking effect of the air hole one 3 and the air hole two 8.
[0036] As shown in Figure 1 The surface of the shell 1 is provided with three explosion-proof pressure relief valves 22, and the surface of the shell 1 is provided with a socket 23.
[0037] By the design of the explosion-proof pressure relief valve 22 and the socket 23, while the shell 1 is relieved by the air hole one 3 and the air hole two 8, the gas in the interior of the shell 1 also enters the interior of the three explosion-proof pressure relief valves 22, and then the explosion-proof pressure relief valve 22 can also relieve the shell 1, thereby improving the efficiency of the relief, and then the socket 23 and the shell 1 are fixed by bolts, and then the connector is inserted into the interior of the socket 23, and then the power supply in the interior of the shell 1 can charge other devices through the connector.
[0038] The working principle and use process of the utility model:
[0039] Firstly, the operating personnel can insert the fixing bolt into the interior of the mounting plate 10, and then the device can be fixed at a preset position, and when the device is working, and the pressure of the battery body 2 is abnormally increased due to short circuit, overcharge and other reasons, the gas with pressure enters the interior of the air hole one 3, and then the moving gas pushes the sealing plug 6 to move upwards, and when the sealing plug 6 moves upwards, the spring 5 is compressed, and then the sealing plug 6 cancels the blocking of the air hole one 3, and then the gas is discharged from the interior of the air hole three 14 through the air hole one 3, and when the pressure in the interior of the battery body 2 continues to increase, the distance of the upward movement of the sealing plug 6 increases, and then the connecting plate 7 moves, and then the moving connecting plate 7 pushes the square plate 11 and the blocking block 9 to move upwards, and then the blocking block 9 cancels the blocking of the air hole two 8, since the air hole one 3 and the air hole two 8 are mutually penetrated, and then the gas with pressure also enters the interior of the air hole two 8, and then the gas is discharged from the interior of the air hole four 16 through the air hole two 8, finally, the excess pressure in the battery is discharged to the outside through the air hole one 3 and the air hole two 8, thereby protecting the safety of the battery and the power supply device.
[0040] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0041] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.
Claims
1. A power relief device for explosion-proof lithium-ion batteries used in coal mines, comprising a housing (1), characterized in that: The bottom of the housing (1) is provided with a battery body (2), and a vent hole (3) is provided on one side of the battery body (2). A fixing groove (4) located at the top of the vent hole (3) is provided inside the battery body (2). An installation groove (20) is provided on one side of the outer surface of the housing (1). The pressure relief mechanism is located at the top of the fixed groove (4). The pressure relief mechanism includes a spring (5). The spring (5) is fixedly connected to the top of the fixed groove (4). A sealing plug (6) located inside the first vent (3) is fixedly installed at the bottom of the spring (5). A connecting plate (7) is fixedly installed at the top of the sealing plug (6). A second vent (8) located on the opposite side of the first vent (3) is opened inside the battery body (2). A sealing block (9) is slidably connected inside the second vent (8). A square plate (11) located at the top of the connecting plate (7) is fixedly installed at both ends of the sealing block (9). A first vent pipe (12) located on the side of the first vent (3) is fixedly installed on one side of the outer surface of the battery body (2). A second vent pipe (13) located on the side of the second vent (8) is fixedly installed on one side of the outer surface of the battery body (2).
2. The power pressure relief device for explosion-proof lithium-ion batteries used in coal mines according to claim 1, characterized in that: Ventilation holes three (14) and four (16) are respectively provided on one side of the outer surface of the shell (1), and the other end of ventilation pipe one (12) and ventilation pipe two (13) are fixedly connected to one side of ventilation holes three (14) and four (16).
3. The power pressure relief device for explosion-proof lithium-ion batteries used in coal mines according to claim 2, characterized in that: The vent hole three (14) is provided with an explosion-proof mesh one (17), and the vent hole four (16) is provided with an explosion-proof mesh two (18).
4. The power pressure relief device for explosion-proof lithium-ion batteries used in coal mines according to claim 3, characterized in that: The surfaces of the explosion-proof mesh one (17) and the explosion-proof mesh two (18) are fixedly installed with U-shaped plates (19) located inside the mounting groove (20). There are four U-shaped plates (19) in each group, and they are arranged in an array on the surfaces of the explosion-proof mesh one (17) and the explosion-proof mesh two (18).
5. The power pressure relief device for explosion-proof lithium-ion batteries used in coal mines according to claim 1, characterized in that: The bottom of the sealing block (9) is provided with a metal block (15), and the bottom of the vent hole (8) is provided with a magnet (21) located at the bottom of the metal block (15).
6. The power pressure relief device for explosion-proof lithium-ion batteries used in coal mines according to claim 1, characterized in that: Mounting plates (10) are fixedly installed at both ends of the surface of the housing (1), and the mounting plates (10) are symmetrically designed about the center of the housing (1).
7. The power pressure relief device for explosion-proof lithium-ion batteries used in coal mines according to claim 1, characterized in that: The sealing plug (6) is semi-circular in design, and the surface of the sealing plug (6) is fully in contact with the inner wall of the first vent (3), and the surface of the sealing block (9) is in contact with the inner wall of the second vent (8).
8. The power pressure relief device for explosion-proof lithium-ion batteries used in coal mines according to claim 1, characterized in that: Three explosion-proof pressure relief valves (22) are provided on one side of the surface of the housing (1), and a socket (23) is provided on one side of the surface of the housing (1).