Elastic force and magnetic force double-control type anti-explosion pressure release valve
The explosion-proof pressure relief valve design, which combines elasticity and magnetic force control, solves the problem of elastic structure jamming in existing technologies. It enables automatic pressure relief under high temperature and high pressure, ensuring the safety of the battery pack and personal safety, and is suitable for flying cars with high safety requirements.
Patent Information
- Application Number
- CN202520180485.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-05
AI Technical Summary
Existing explosion-proof pressure relief valves in automobiles and flying cars mostly use a single spring control structure. When the spring mechanism gets stuck, it cannot open normally, resulting in damage to the internal electrochemical structure of the battery pack and insufficient safety.
It adopts a dual control method of elasticity and magnetism. The valve is automatically opened when the magnet loses its magnetism at high temperature and the air pressure reaches a certain value. Combined with the breathable layer design, it ensures that the valve can be reliably opened under any circumstances, and has a double insurance mechanism.
The opening safety of the explosion-proof pressure relief valve has been improved, ensuring automatic pressure relief under high temperature and high pressure, protecting battery facilities and personal safety, and is suitable for flying cars with high safety requirements.
Smart Images
Figure CN223868616U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of explosion -proof pressure -relief valve, concretely is a kind of elastic magnetic force double -control type explosion -proof pressure -relief valve. BACKGROUND
[0002] Explosion -proof pressure -relief valve is a kind of safety device for preventing the explosion or damage of equipment or system due to internal pressure is too high, and the existing automobile and flying automobile power battery pack pressure -relief valve or explosion -proof valve technology mostly uses elastic pressure -relief structure.
[0003] The existing automobile and flying automobile technology on pressure -relief explosion -proof valve adopt elastic control type structure, when battery pack internal pressure exceeds elastic force, explosion -proof pressure -relief valve opens and carries out pressure relief, when spring mechanism is stuck, explosion -proof pressure -relief valve cannot normally open to thereby produce damage to all electrochemistry structure in battery pack internal, and valve opening safety is single. UTILITY MODEL CONTENTS
[0004] The utility model is to provide a kind of elastic magnetic force double -control type explosion -proof pressure -relief valve to solve the problems presented in the above background technique.
[0005] In order to achieve the above object, the utility model provides the following technical scheme: a elastic magnetic double -control formula explosion -proof pressure -relief valve, including the body, the inner wall of body is placed with the snap spring, the inner wall of body can detachably install the limit ring, the inner wall of body is connected with the guide rod, through setting up the guide rod can connect the body and the piston, play the connecting effect, the outer wall of guide rod is connected with the snap spring, through setting up the snap spring can improve the stability of guide rod, the bottom of body is fixedly installed with the shell, the outer wall of guide rod is fixedly installed with the spring, the end away from the guide rod of spring is fixedly installed in the bottom of body, through setting up the spring can make the piston adhere to the sealing ring, and then can improve the sealing effect of piston, the top of body is fixedly installed with the inner sealing ring, and the inner sealing ring is mainly sealed between the piston and the body, the bottom of body is fixedly installed with the outer sealing ring, and the outer sealing ring is mainly sealed between the body and the power battery pack installation part, the inner wall of guide rod is fixedly installed with the magnet, the top of magnet is fixedly installed with the iron sleeve, through the magnet generates the magnetic force and holds the iron sleeve, when the battery pack or the energy storage facility inside heat runaway, the temperature will be rising, when the temperature reaches 310~350 DEG C above, the magnetic material will lose the magnetic force, thereby makes the piston fall off, and the valve will open and release pressure, the top of iron sleeve is fixedly installed with the piston, when the air pressure reaches 2~20KPa and exceeds the elastic structure force value, the elastic structure makes the piston open and release pressure under the action of pressure, the top of piston is fixedly installed with the air -permeable layer, the air -permeable layer is made of the expanded polytetrafluoroethylene PTEE, and the EPTEE is a kind of high polymer material, which is a high polymer compound formed by polymerization of tetrafluoroethylene, with excellent chemical stability and corrosion resistance, the top of air -permeable layer is fixedly installed with the compression ring, the air -permeable layer can be pressed by the compression ring, to improve the stability of the air -permeable layer, the top of compression ring is fixedly installed with the iron sheet, the top of iron sheet is fixedly installed with the upper cover, the body is provided with adjusting mechanism, the body can be installed on different models and sizes of power battery pack by setting the adjusting mechanism, so that the body is more convenient to install.
[0006] Preferably, the adjusting mechanism includes a mounting block, the mounting block is slidably connected to the inner wall of the body, a through hole is formed in the mounting block, and a bolt passes through the through hole. The body and the power battery pack of the automobile can be installed by cooperating with the mounting block. The position of the through hole can be adjusted by sliding the mounting block, so that the body can be installed on different models and sizes of power battery packs.
[0007] Preferably, a fixing ring is fixedly installed on the outer wall of the mounting block. The threaded rod and the mounting block can be connected by setting the fixing ring, so that the threaded rod can drive the mounting block to slide on the inner wall of the body.
[0008] Preferably, the outer wall of the fixed ring is rotationally connected with a threaded rod, and the threaded rod can drive the mounting block to slide on the inner wall of the body by cooperating with the fixed ring, so that the position of the mounting block can be freely adjusted.
[0009] Preferably, one end of the threaded rod away from the fixed ring penetrates the body and is fixedly connected with a rotating rod, and the threaded rod can be rotated by the rotating rod, so that the threaded rod can rotate on the outer wall of the fixed ring.
[0010] Preferably, the threaded rod is threadedly connected with the body at the penetration position, so that the threaded rod can move on the inner wall of the body while rotating, and the threaded rod can drive the mounting block to slide on the inner wall of the body while moving in cooperation with the fixed ring.
[0011] Preferably, the guide rod is located in the interior of the shell, the guide rod is hollow, and the magnet and the iron sleeve are located in the interior of the guide rod, so that the guide rod and the spring can be protected by the shell, and the elasticity of the spring can be prevented from being affected by impact.
[0012] Preferably, the limiting ring is located on the top of the clasp spring, and the clasp spring can be pressed in the interior of the body by the limiting ring, so that displacement of the clasp spring can be prevented and the stability of the clasp spring can be improved.
[0013] Compared with the prior art, the elastic magnetic double-control type explosion-proof pressure relief valve has the following beneficial effects:
[0014] 1. The elastic magnetic double-control type explosion-proof pressure relief valve adopts a new magnetic control mode and an original elastic control mode to control the opening of the explosion-proof pressure relief valve, and when the internal pressure reaches the elastic control point, the valve is opened, and the piston has a locking structure to prevent the valve from being closed.
[0015] 2、The elastic magnetic double-control type explosion-proof pressure relief valve passes through the through hole and is screwed on the automobile power battery pack, and the body and the automobile power battery pack can be installed by cooperating with the mounting block, the threaded rod is rotated through the rotating rod, and the mounting block can slide on the inner wall of the body by cooperating with the fixing ring, the position of the through hole can be adjusted through the sliding of the mounting block, the position of the through hole is adjusted, the body can adapt to automobile power batteries of different models and sizes, and therefore the applicability of the body can be improved, and the body is more flexible to use. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a whole structure schematic view of the utility model;
[0017] Figure 2 It is a whole structure schematic view of the utility model Figure 1 It is an explosion structure schematic view of the utility model;
[0018] Figure 3 It is a cross section structure schematic view of the utility model guide rod;
[0019] Figure 4 It is a whole structure schematic view of the utility model adjusting mechanism.
[0020] In the drawing: 1, shell, 2, spring, 3, guide rod, 4, outer sealing ring, 5, clamping spring, 6, limit ring, 7, body, 8, inner sealing ring, 9, magnet, 10, iron sleeve, 11, piston, 12, air-permeable layer, 13, pressing ring, 14, iron sheet, 15, upper cover, 16, adjusting mechanism, 161, mounting block, 162, through hole, 163, fixing ring, 164, threaded rod, 165, rotating rod. DETAILED DESCRIPTION
[0021] As Figures 1-4As shown, the utility model provides a technical scheme: a elastic magnetic double control formula explosion -proof pressure relief valve, including body 7, body 7 plays the frame effect, can install body 7 on the automobile power battery package using bolt through the through -hole 162 cooperation mounting block 161, the inner wall of body 7 places has the snap spring 5, the inner wall of body 7 can be detached and installed with the limiting ring 6, the limiting ring 6 is located at the top of snap spring 5, limiting ring 6 is used for pressing snap spring 5, prevent snap spring 5 from the inside of body 7 and pop out, the inner wall of body 7 is clamped with guide rod 3, guide rod 3 is used for connecting body 7 and piston 11, and it plays the connecting effect, the outer wall of guide rod 3 is provided with 1~4 snap spring 5 slot positions, guide rod 3 is located in the inside of shell 1, snap spring 5 is clamped in the outer wall of guide rod 3, when body 7 opens valve, snap spring 5 can steady guide rod 3, prevent valve and close, the bottom of body 7 is fixedly installed with shell 1, shell 1 can cover spring 2, and then can protect spring 2, the outer wall of guide rod 3 is fixedly installed with spring 2, the end away from guide rod 3 of spring 2 is fixedly installed in the bottom of body 7, and the elastic force provided by spring 2 can make piston 11 adhere to sealing ring, the top of body 7 is fixedly installed with inner sealing ring 8, and inner sealing ring 8 is mainly sealed between piston 11 and body 7, the bottom of body 7 is fixedly installed with outer sealing ring 4, and outer sealing ring 4 can seal body 7 and power battery package installation part, the inner wall of guide rod 3 is fixedly installed with magnet 9, magnet 9 is neodymium iron boron magnetic material, diameter 8~20mm, thickness 2~20mm pre-magnetization intensity 2000~6000Gs, magnetic force is at 6~50N, the top of magnet 9 is fixedly installed with iron sleeve 10, and iron sleeve 10 is ferromagnetic material sleeve, length is from 5~18mm, generates magnetic force through magnet 9 and holds iron sleeve 10, when battery package or energy storage facility inside thermal runaway, temperature will increase constantly, when temperature reaches 310 DEG C ~ 350 DEG C above, magnetic material will lose magnetic force, thereby make piston 11 fall off, and valve will open and relieve pressure, guide rod 3 is hollow, and magnet 9 and iron sleeve 10 are arranged in the inside of guide rod 3, the top of iron sleeve 10 is fixedly installed with piston 11, and piston 11 is used for adhering to sealing ring, when body 7 opens valve, piston 11 is separated from sealing ring by air pressure, and iron sleeve 10 is mainly used for connecting piston 11 and magnet 9, when the space air pressure of battery package or energy storage facility increases constantly because of the gas generated by chemical battery, when air pressure reaches 2~20KPa and exceeds elastic force structure force value, elastic force structure makes piston 11 open and relieve pressure under pressure effect, and also has locking structure to prevent valve from closing due to pressure fluctuation after opening, when elastic force structure is locked and fails, air pressure reaches elastic force structure force value, and elastic force structure cannot open, and pressure will further increase, when air pressure reaches 10~30KPa and exceeds magnetic force structure force value, piston 11 will also open and relieve pressure, so that double insurance is realized, and piston 11 is separated from sealing ring by air pressure when valve is opened, the top of piston 11 is fixedly installed with air-permeable layer 12, air-permeable layer 12 is mainly made of expanded polytetrafluoroethylene (EPTEE), the top of air-permeable layer 12 is fixedly installed with pressure ring 13,The pressure ring 13 is mainly used for pressing the air permeable layer 12 and improving the stability of the air permeable layer 12, the top of the pressure ring 13 is fixedly provided with an iron sheet 14, the iron sheet 14 is mainly used for sealing detection of the body 7, the top of the iron sheet 14 is fixedly provided with an upper cover 15, the gap between the upper cover 15 and the body 7 is perpendicular to the opening direction, and the upper cover 15 has an anti-jamming function, the body 7 is provided with an adjusting mechanism 16, the adjusting mechanism 16 is arranged to enable the body 7 to be installed on power battery packs of different models and sizes, improve the applicability of the body 7, and make the body 7 more convenient to install.
[0022] The adjusting mechanism 16 comprises a mounting block 161 which is slidably connected to the inner wall of the body 7, a through hole 162 is formed in the mounting block 161, a bolt is passed through the through hole 162 and is screwed on the automobile power battery pack, so that the body 7 can be installed on the automobile power battery pack, and the position of the through hole 162 can be adjusted through sliding of the mounting block 161, so that the body 7 can adapt to automobile power battery packs of different sizes and models, a fixing ring 163 is fixedly arranged on the outer wall of the mounting block 161, a threaded rod 164 is rotatably connected to the outer wall of the fixing ring 163, a rotating rod 165 is fixedly arranged on the end of the threaded rod 164 away from the fixing ring 163 and penetrates through the body 7, and the threaded rod 164 is screwed at the penetration position of the body 7, the rotating rod 165 is rotated to rotate the threaded rod 164, and the fixing ring 163 can drive the mounting block 161 to slide on the inner wall of the body 7 in cooperation with the fixing ring 163.
[0023] Working principle: when the body 7 needs to be installed, the bolt is passed through the through hole 162 and is screwed on the automobile power battery pack, when the through hole 162 deviates from the bolt hole on the automobile power battery pack, the threaded rod 164 is rotated through the rotating rod 165, the threaded rod 164 rotates on the outer wall of the fixing ring 163, the threaded rod 164 moves on the inner wall of the body 7 due to the threaded connection between the threaded rod 164 and the body 7, the fixing ring 163 moves synchronously with the threaded rod 164, the mounting block 161 slides on the inner wall of the body 7 with the fixing ring 163, the position of the through hole 162 can be adjusted through the sliding of the mounting block 161, and then the through hole 162 can be kept concentric with the bolt hole on the automobile power battery pack, so that the body 7 can be installed on the automobile power battery pack.
[0024] The above is a detailed description of the general application, but some modifications or improvements can be made on the basis of the application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the application are within the protection scope of the application.
Claims
1. A double-controllable explosion-proof pressure relief valve with elastic magnetic force, comprising a body (7), characterized in that: A retaining ring (5) is placed on the inner wall of the body (7). A limit ring (6) is detachably installed on the inner wall of the body (7). A guide rod (3) is snapped onto the inner wall of the body (7). The retaining ring (5) is snapped onto the outer wall of the guide rod (3). A shell (1) is fixedly installed at the bottom of the body (7). A spring (2) is fixedly installed on the outer wall of the guide rod (3). The end of the spring (2) away from the guide rod (3) is fixedly installed at the bottom of the body (7). An inner sealing ring (8) is fixedly installed at the top of the body (7). A bottom sealing ring (8) is fixedly installed at the bottom of the body (7). The guide rod (3) is equipped with an outer sealing ring (4), a magnet (9) is fixedly installed on the inner wall of the guide rod (3), an iron sleeve (10) is fixedly installed on the top of the magnet (9), a piston (11) is fixedly installed on the top of the iron sleeve (10), a breathable layer (12) is fixedly installed on the top of the piston (11), a pressure ring (13) is fixedly installed on the top of the breathable layer (12), an iron sheet (14) is fixedly installed on the top of the pressure ring (13), a top cover (15) is fixedly installed on the top of the iron sheet (14), and an adjustment mechanism (16) is provided on the main body (7).
2. The elastic magnetic dual-control explosion-proof pressure relief valve according to claim 1, characterized in that: The adjustment mechanism (16) includes a mounting block (161), which is slidably connected to the inner wall of the body (7), and a through hole (162) is provided on the mounting block (161).
3. The elastic magnetic dual-control explosion-proof pressure relief valve according to claim 2, characterized in that: A fixing ring (163) is fixedly installed on the outer wall of the mounting block (161).
4. The elastic magnetic dual-control explosion-proof pressure relief valve according to claim 3, characterized in that: The outer wall of the fixed ring (163) is rotatably connected to a threaded rod (164).
5. The elastic magnetic dual-control explosion-proof pressure relief valve according to claim 4, characterized in that: The threaded rod (164) is fixedly mounted on the rotating rod (165) by passing through the body (7) at the end away from the fixing ring (163).
6. The elastic magnetic dual-control explosion-proof pressure relief valve according to claim 5, characterized in that: The threaded rod (164) is threadedly connected to the body (7) at the through-hole.
7. The elastic magnetic dual-control explosion-proof pressure relief valve according to claim 1, characterized in that: The guide rod (3) is located inside the outer shell (1). The guide rod (3) is hollow. The magnet (9) and the iron sleeve (10) are both located inside the guide rod (3).
8. The elastic magnetic dual-control explosion-proof pressure relief valve according to claim 1, characterized in that: The limiting ring (6) is located at the top of the retaining ring (5).