Anti-explosion exhaust valve

Abstract

The utility model discloses an explosion-proof exhaust valve belonging to the field of battery pack pressure relief, which comprises a base, a cover body linked on the base, an exhaust port arranged on the base, a connecting piece rotatably connected with the base arranged at one end of the cover body, a locking piece arranged at one end of the cover body far away from the connecting piece, and a fixing port arranged on the base. A switch piece in linkage with the locking piece is arranged in the fixing opening, the switch piece is in linkage with a pressure sensor, and a bouncing piece used for bouncing the cover body is further arranged on the base. When the pressure in the battery pack is abnormal, the pressure sensor recognizes the pressure value in the battery pack, and when the pressure reaches a threshold value, a signal is transmitted to the switch piece, so that the switch piece is separated from the locking piece, the cover body bounces towards the upper portion of the exhaust valve, the two ends of the exhaust port are communicated, and the battery pack continuously releases pressure. Accurate and rapid pressure relief of the exhaust valve within a controllable range is achieved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack pressure relief, specifically to an explosion-proof exhaust valve. Background Technology

[0002] A battery pack is a systematic energy storage device that combines multiple battery cells in series and parallel, packages them into modules, and integrates management systems and auxiliary components. It is widely used in electric vehicles, energy storage systems, consumer electronics, and other fields. To cope with abnormally high internal pressure and ensure safety and stability, vent valves are usually integrated into the battery pack.

[0003] Chinese utility model patent publication number "CN118920003A" discloses an explosion-proof pressure relief valve and battery pack, including a base, a deformable mounting structure, and a cover. The base has opposing upper and lower surfaces, with air holes extending through both surfaces. The deformable mounting structure is disposed on the lower surface of the base and protrudes downward from it. The deformable mounting structure can elastically contract and release in a direction parallel to the lower surface of the base. The outer center of the deformable mounting structure protrudes outward to form a positioning part, and the deformable mounting structure forms a recessed fixing part between the positioning part and the base.

[0004] However, the aforementioned pressure relief valve still has the following drawbacks:

[0005] First, the pressure relief valve is installed through a deformation mounting structure. The battery pack is vented by the deformation of the deformation mounting structure and the pressure relief port. However, since the bearing capacity of the base deformation mounting structure is not clear, the pressure relief threshold cannot be accurately set, which can easily lead to premature or delayed pressure relief.

[0006] Secondly, since the pressure relief valve needs to be pressed against the base to pop up, the pop-up time is relatively long. The pressure inside the battery pack continues to accumulate during pop-up, which can easily cause the battery pack pressure to be too high and fail to achieve explosion protection. At the same time, the vibration generated during vehicle operation can easily cause the elastic locking deformation installation structure to gradually loosen, which can lead to the pressure relief valve falling off unexpectedly.

[0007] Therefore, it is necessary to improve upon the aforementioned shortcomings. Utility Model Content

[0008] The purpose of this invention is to provide a safe, reliable, fast-responding, robust, durable, and versatile explosion-proof exhaust valve to solve the above-mentioned problems existing in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an explosion-proof exhaust valve, including a base, a cover connected to the base, an exhaust port on the base, a connector rotatably connected to the base at one end of the cover, a locking member at the end of the cover away from the connector, a fixing port on the base, a switch connected to the locking member inside the fixing port, a pressure sensor connected to the switch, and a pop-up member for the cover to pop up on the base.

[0010] By adopting the above technical solution: the exhaust valve is installed on the battery pack via a base, and the cover seals the exhaust port to prevent pressure leakage under normal conditions. At the same time, the locking and switching components work together to prevent the cover from popping up abnormally, improving the overall stability of the exhaust valve. When the pressure inside the battery pack is abnormal, the pressure sensor identifies the pressure value inside the battery pack. When the pressure reaches the threshold, it transmits a signal to the switching component, causing the switching component to disengage from the locking component. Subsequently, the pop-up component pops the cover up towards the exhaust valve, connecting the two ends of the exhaust port. The air pressure inside the battery pack is continuously released through the exhaust port, achieving the explosion-proof function of the battery pack. By combining with the pressure sensor, the opening of the exhaust valve can be precisely controlled, achieving precise pressure release within a controllable range. At the same time, the pop-up component, in conjunction with the pressure inside the battery pack, can achieve rapid pop-up of the cover, thereby achieving rapid pressure release of the exhaust valve.

[0011] The aforementioned explosion-proof exhaust valve can be further configured as follows: the switching component includes a lock housing, a lock hook disposed within the lock housing, a pull rod for rotating the lock hook, and a solenoid valve for moving the pull rod; sliding grooves are provided on both sides of the lock housing; the locking component includes a locking mounting plate and a latch disposed perpendicular to the locking mounting plate; the latch and the lock hook work together to lock the cover and the base.

[0012] By adopting the above technical solution: the locking hook locks and releases the latch through locking blocks of different lengths on both sides. When the locking hook is in a horizontal state, the shorter locking block abuts against the inside of the latch to prevent the latch from disengaging from the locking hook. When the switch is unlocked, the locking hook rotates counterclockwise, and the latch gradually disengages from the locking block. When it is completely disengaged, the cover can be quickly popped up. After the pressure is released, the cover is fastened back to the base. The latch abuts against the longer locking block, causing the locking hook to rotate clockwise until the shorter locking block abuts against the inside of the latch to lock. The solenoid valve controls the locking hook more precisely and can quickly release the locking hook when the battery pack needs to be depressurized, so that the locking hook disengages from the latch, improving the response efficiency of the pressure relief valve. In addition, the sliding grooves on both sides of the lock housing can limit the latch to prevent the latch from failing to accurately engage with the locking hook, and can also guide the latch to slide in, improving the convenience of connecting the cover and the base.

[0013] The aforementioned explosion-proof exhaust valve can be further configured as follows: protective connecting plates are provided on both sides of the lock housing, and a connecting support plate is provided at one end of the protective connecting plate near the base. Several first connecting holes are opened on the connecting support plate, and several second connecting holes are opened on the protective connecting plate. Connecting bolts for fixing the switch and the base are inserted into the first connecting holes and the second connecting holes.

[0014] By adopting the above technical solution: the protective connecting plate can protect both sides of the lock shell, while the end of the connecting support plate is set perpendicular to the lock shell, and the connection point with the protective connecting plate is set at an angle. This provides a connection point for the lock shell and the base, and also guides and protects the latch, preventing foreign objects from getting stuck in the sliding groove and avoiding failure of the switching components due to foreign objects. At the same time, the riveting of the connecting bolts in the first connecting hole of the base and the connecting support plate, and the riveting of the connecting bolts in the second connecting hole of the lock shell and the connecting protective plate, realizes the fixation between the lock shell and the base, effectively preventing the switching components from loosening and improving the stability of the exhaust valve.

[0015] The aforementioned explosion-proof exhaust valve can be further configured such that: the base has a receiving groove for accommodating the cover, the bottom of the receiving groove has a first sealing groove, a first sealing ring is engaged in the first sealing groove, and a wave-shaped gasket is provided on the side of the first sealing ring near the cover.

[0016] By adopting the above technical solution: the receiving groove is used to accommodate the cover when it is closed, allowing the cover to be placed stably on the base, reducing the shaking of the cover in the closed state, and improving the stability of the exhaust valve structure. The first sealing groove is set at the bottom of the sealing groove along the circumference of the exhaust port and the fixing port. The first sealing ring is snapped into the first sealing groove. When the cover is closed, the cover and the first sealing ring are in close contact, forming an effective seal, preventing gas in the battery pack from leaking from the exhaust port, and also preventing external dust, moisture and other impurities from entering the battery pack, ensuring the working environment of the battery pack. The corrugated gasket on the first sealing ring further enhances the sealing effect. The corrugated gasket has good elasticity and can generate a uniform reaction force on the cover when the cover is closed, making the contact between the cover and the first sealing ring tighter and improving the reliability of the seal. At the same time, the corrugated gasket can buffer the impact of pressure changes in the battery pack on the cover to a certain extent, extending the service life of the seal and ensuring that the exhaust valve maintains good sealing performance during long-term use.

[0017] The aforementioned explosion-proof exhaust valve can be further configured such that a second sealing groove is provided on the bottom end face of the base, and a second sealing ring is engaged in the second sealing groove.

[0018] By adopting the above technical solution: when the exhaust valve is installed on the battery pack, the bottom of the base contacts the battery pack, and the second sealing ring fits tightly against the surface of the battery pack, forming an effective seal. This further prevents gas inside the battery pack from leaking out from the gap between the base and the battery pack, and also prevents external dust, moisture, and other foreign objects from entering the battery pack, ensuring a stable working environment for the battery pack, improving the sealing performance of the exhaust valve, and also acting as a buffer to reduce hard contact between the base and the battery pack, reducing the risk of damage to the exhaust valve and battery pack caused by collisions or vibrations, improving the installation stability between the exhaust valve and the battery pack, reducing loosening caused by vibrations or pressure changes, and further improving the overall reliability of the exhaust valve.

[0019] The aforementioned explosion-proof exhaust valve can be further configured such that: the base has several mounting ears at its edge, the mounting ears have first mounting holes, and the base also has several second mounting holes at its edge.

[0020] By adopting the above technical solution: several mounting ears are provided at the edge of the base, and the first mounting hole is opened on each mounting ear, providing multiple installation methods for the exhaust valve, making it easy to firmly fix the exhaust valve to the battery pack. The second mounting hole can be used to fix the exhaust valve in different positions, or to cooperate with other fasteners to enhance the installation strength and stability of the exhaust valve, ensure that the exhaust valve is subjected to uniform force during installation, improve the stability of the overall structure, and enable the exhaust valve to adapt to different types of battery packs and installation environments, improving the versatility and applicability of the exhaust valve, and ensuring that the exhaust valve can effectively perform its explosion-proof and pressure relief functions.

[0021] The aforementioned explosion-proof exhaust valve can be further configured as follows: the connecting component includes a fixed seat and a rotating seat. The fixed seat has a rotating groove in the middle, and rotating fixing holes are provided on both sides of the rotating groove. The rotating seat has a rotating hole axially extending through it. A rotating shaft passes through the rotating hole, and both ends of the rotating shaft are engaged with the rotating fixing holes. A mounting support plate for connecting the cover is provided at the end of the rotating seat away from the rotating hole. Several cover plate fixing holes are provided on the mounting support plate, and fixing bolts for connecting the mounting support plate and the cover pass through the cover plate fixing holes.

[0022] By adopting the above technical solution: the connector achieves a rotatable connection between the cover and the base through the cooperation of the fixed seat and the rotating seat. The rotating groove and rotating fixing hole on the fixed seat provide stable rotational support for the rotating seat. The rotating hole and rotating shaft inside the rotating seat ensure that the cover can rotate smoothly around the rotating shaft, which not only makes the opening and closing of the cover smoother, but also can withstand a certain torque, ensuring good connection performance after multiple opening and closing. The mounting plate at the end of the rotating seat away from the rotating hole provides a connection point for the cover. The cover fixing hole and fixing bolt ensure that the cover can be firmly connected to the mounting plate, ensuring that the cover will not loosen or fall off during rotation, improving the connection strength between the cover and the base, facilitating quick disassembly and installation of the cover when needed, and facilitating maintenance or replacement of parts of the exhaust valve. In addition, the rotatable connection between the cover and the base through the connector allows the cover to tightly seal the exhaust port under normal conditions to prevent gas leakage, and to quickly pop up when pressure needs to be released, achieving rapid pressure release.

[0023] The beneficial effects of this utility model are as follows:

[0024] First, the vent valve can accurately identify the pressure value inside the battery pack through a pressure sensor. When the pressure reaches the set threshold, the switch can quickly disengage from the locking component. Under the dual action of the pop-up component and the internal pressure of the battery pack, the cover can quickly pop up, thereby connecting the two ends of the vent. This allows the air pressure inside the battery pack to be continuously, quickly, and accurately released, effectively ensuring the safe operation of the battery pack and avoiding dangerous situations such as explosions caused by abnormal pressure increases. This improves the reliability of the entire battery system and ensures that it can work stably under various operating conditions.

[0025] Secondly, the switching component consists of a lock housing, a lock hook, a pull rod, and a solenoid valve. It works in conjunction with the latch in the locking component. The locking and releasing of the cover and base are achieved by locking blocks of different lengths on both sides of the lock hook. This not only makes the control of the lock hook more precise and allows for a rapid response when the battery pack needs to be depressurized, thus disengaging the lock hook from the latch and improving the response efficiency of the pressure relief valve, but also, after the pressure relief is completed, when the cover is re-fastened, the latch abuts against the longer locking block, causing the lock hook to rotate clockwise until the shorter locking block abuts against the inside of the latch to achieve locking. This convenient operation ensures the stability and reliability of the connection between the cover and the base and extends the service life of the exhaust valve.

[0026] Third, one end of the cover is rotatably connected to the base via a connector. This rotatable connection makes the opening and closing of the cover smoother, can withstand a certain torque, and ensures good connection performance even after multiple openings and closings. Meanwhile, the fixing port on the base is equipped with a switch that links with the locking mechanism, as well as sliding grooves on both sides of the lock housing. These not only limit the latch to prevent it from failing to accurately engage with the lock hook, but also guide the latch to slide in, further improving the convenience and stability of the connection between the cover and the base. Furthermore, the first and second connecting holes on the protective connecting plate and the connecting support plate are fixed to the base with connecting bolts, effectively preventing the switch from loosening and enhancing the overall stability of the exhaust valve. This ensures that it will not loosen or fail due to vibration or pressure changes during long-term use, guaranteeing the normal operation of the exhaust valve and the safety of the battery pack.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the exhaust valve of this utility model;

[0029] Figure 2 This is a split diagram of the exhaust valve of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the base of this utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the switching component of this utility model;

[0032] Figure 5 This is a disassembled schematic diagram of the switch component of this utility model;

[0033] Figure 6 This is a schematic diagram showing the disassembled connection of the present invention;

[0034] Figure 7 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0035] Figure 8 This is a schematic diagram of the structure from another perspective of Embodiment 3 of this utility model;

[0036] Labeling notes: Base 1, Exhaust port 11, Fixing port 12, Receiving groove 13, First sealing groove 14, First sealing ring 15, Wave washer 151, Second sealing groove 16, Second sealing ring 17, Mounting ear 18, First mounting hole 181, Second mounting hole 19, Cover 2, Locking element 21, Mounting plate 211, Lock 212, Connecting element 3, Fixing seat 31, Rotating groove 311, Rotating fixing hole 312, Rotating seat 32. Rotating hole 321, rotating shaft 322, mounting support plate 323, cover plate fixing hole 324, fixing bolt 33, switch 4, lock housing 41, sliding groove 411, locking hook 42, pull rod 43, solenoid valve 44, connecting protective plate 45, second connecting hole 451, connecting support plate 46, first connecting hole 461, connecting bolt 47, pop-up part 5, pop-up bracket 51, fixed end 511, elastic arm 512, contact end 513, cylinder 52. Detailed Implementation

[0037] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] Example 1: As Figures 1 to 6The explosion-proof exhaust valve shown includes a base 1, a cover 2 linked to the base 1, an exhaust port 11 on the base 1, a connector 3 rotatably connected to the base 1 at one end of the cover 2, a locking member 21 at the end of the cover 2 away from the connector 3, a fixing port 12 on the base 1, a switch 4 linked to the locking member 21 in the fixing port 12, a pressure sensor linked to the switch 4, and a pop-up member 5 for popping up the cover 2 on the base 1. The pop-up member 5 is a pop-up bracket 51, which includes a fixed end 511, an elastic arm 512, and an abutting end 513. The base 1 has a mounting groove for fixing the pop-up bracket 51 at the edge of the exhaust port 11. The fixed end 511 is set in the mounting groove, and the abutting end 513 abuts against the lower surface of the cover 2. The elastic arm 512 in the middle provides elastic potential energy for the pop-up member 5. The exhaust valve is mounted on the battery pack via the base 1. The cover 2 seals the exhaust port 11 to prevent pressure leakage under normal conditions. At the same time, the locking element 21 and the switch element 4 cooperate to prevent the cover 2 from popping up abnormally, improving the overall stability of the exhaust valve. When the pressure inside the battery pack is abnormal, the pressure sensor identifies the pressure value inside the battery pack. When the pressure reaches the threshold, it transmits a signal to the switch element 4, causing the switch element 4 to disengage from the locking element 21. Then, the pop-up element 5 pops the cover 2 up towards the exhaust valve, connecting the two ends of the exhaust port 11. The air pressure inside the battery pack is continuously released through the exhaust port 11, achieving the explosion-proof function of the battery pack. By combining with the pressure sensor, the opening of the exhaust valve can be precisely controlled, achieving precise pressure release within a controllable range. At the same time, the pop-up element 5, in conjunction with the pressure inside the battery pack, can achieve the rapid pop-up of the cover 2, thereby achieving rapid pressure release of the exhaust valve.

[0039] The switch 4 includes a lock housing 41, a lock hook 42 disposed inside the lock housing 41, a pull rod 43 for rotating the lock hook 42, and a solenoid valve 44 for moving the pull rod 43. Sliding grooves 411 are provided on both sides of the lock housing 41. The locking component 21 includes a locking mounting plate 211 and a latch 212 disposed perpendicular to the locking mounting plate 211. The latch 212 and the lock hook 42 work together to lock the cover 2 and the base 1. The locking hook 42 locks and releases the latch 212 via locking blocks of different lengths on both sides. When the locking hook 42 is in a horizontal position, the shorter locking block abuts against the inside of the latch 212 to prevent the latch 212 from disengaging from the locking hook 42. When the switch 4 is unlocked, the locking hook 42 rotates counterclockwise, and the latch 212 gradually disengages from the locking block. When it is completely disengaged, the cover 2 can be quickly popped up. After the pressure is released, the cover 2 is fastened back onto the base 1. The latch 212 abuts against the longer locking block, causing the locking hook 42 to rotate clockwise until the shorter one is engaged. The locking block abuts against the inside of the latch 212 to achieve locking, while the solenoid valve 44 controls the latch 42 more precisely. At the same time, when it is necessary to depressurize the battery pack, the latch 42 can be released quickly, so that the latch 42 disengages from the latch 212, which improves the response efficiency of the pressure relief valve. In addition, the sliding grooves 411 on both sides of the lock housing 41 can limit the latch 212 to prevent the latch 212 from failing to accurately engage with the latch 42, and also provide guidance for the latch 212 to slide in, which improves the convenience of connecting the cover 2 and the base 1.

[0040] The connector 3 includes a fixed seat 31 and a rotating seat 32. The fixed seat 31 has a rotating groove 311 in the middle. The fixed seat 31 has rotating fixing holes 312 on both sides of the rotating groove 311. The rotating seat 32 has a rotating hole 321 axially extending through it. A rotating shaft 322 passes through the rotating hole 321. Both ends of the rotating shaft 322 are engaged with the rotating fixing holes 312. The end of the rotating seat 32 away from the rotating hole 321 is provided with a mounting plate 323 for connecting the cover 2. The mounting plate 323 has several cover plate fixing holes 324. Fixing bolts 33 for connecting the mounting plate 323 and the cover 2 pass through the cover plate fixing holes 324. The connector 3 achieves a rotatable connection between the cover 2 and the base 1 through the cooperation of the fixed seat 31 and the rotating seat 32. The rotating groove 311 and the rotating fixing hole 312 on the fixed seat 31 provide stable rotational support for the rotating seat 32. The rotating hole 321 and the rotating shaft 322 in the rotating seat 32 ensure that the cover 2 can rotate smoothly around the rotating shaft 322, which not only makes the opening and closing of the cover 2 smoother, but also can withstand a certain torque, ensuring that it maintains good connection performance after multiple opening and closing. The mounting plate 323 at the end of the rotating seat 32 away from the rotating hole 321 provides a connection point for the cover 2. The cover fixing hole 324 and the fixing bolt 33 make the cover 2 firmly connected to the mounting plate 323, ensuring that the cover 2 will not loosen or fall off during rotation, improving the connection strength between the cover 2 and the base 1, and facilitating quick disassembly and installation of the cover 2 when needed, making it convenient for maintenance or replacement of parts of the exhaust valve. In addition, the cover 2 and the base 1 are rotatably connected by the connector 3, so that the cover 2 can tightly seal the exhaust port 11 under normal conditions to prevent gas leakage, and can quickly pop up when pressure needs to be released to achieve rapid pressure release.

[0041] Example 2: The difference from Example 1 is that the lock housing 41 is further provided with protective connecting plates 45 on both sides. The protective connecting plate 45 is provided with a connecting support plate 46 near the base 1. The connecting support plate 46 is provided with a number of first connecting holes 461 and the protective connecting plate 45 is provided with a number of second connecting holes 451. Connecting bolts 47 for fixing the switch 4 and the base 1 are inserted into the first connecting holes 461 and the second connecting holes 451. The protective connecting plate 45 protects both sides of the lock housing 41. Meanwhile, the end of the connecting support plate 46 is set perpendicular to the lock housing 41, while the connection point with the protective connecting plate 45 is set at an angle. This provides a connection point for the lock housing 41 and the base 1, and also guides and protects the latch 212, preventing foreign objects from getting stuck in the sliding groove 411 and avoiding the failure of the switch 4 due to foreign objects. At the same time, the connecting bolts 47 in the first connecting hole 461 on the base 1 and the connecting support plate 46 are riveted together, and the connecting bolts 47 in the second connecting hole 451 on the lock housing 41 and the connecting protective plate 45 are riveted together, which realizes the fixation between the lock housing 41 and the base 1, effectively preventing the switch 4 from loosening and improving the stability of the exhaust valve.

[0042] The base 1 has a receiving groove 13 for accommodating the cover 2. A first sealing groove 14 is provided at the bottom of the receiving groove 13, and a first sealing ring 15 is engaged within the first sealing groove 14. A wave-shaped washer 151 is also provided on the side of the first sealing ring 15 near the cover 2. The receiving groove 13 is used to accommodate the cover 2 when it is closed, allowing the cover 2 to be placed stably on the base 1, reducing the shaking of the cover 2 in the closed state, and improving the stability of the exhaust valve structure. The first sealing groove 14 is arranged circumferentially along the exhaust port 11 and the fixing port 12 at the bottom of the fusible groove. The first sealing ring 15 is engaged within the first sealing groove 14. When the cover 2 is closed, the cover 2 and the first sealing ring 15 are in close contact, forming an effective seal to prevent gas from leaking from the exhaust port 11 inside the battery pack, and also to prevent external dust, moisture, and other impurities from entering the battery pack, ensuring the working environment of the battery pack. The corrugated washer 151 on the first sealing ring 15 further enhances the sealing effect. The corrugated washer 151 has good elasticity and can generate a uniform reaction force on the cover 2 when it is closed, making the contact between the cover 2 and the first sealing ring 15 tighter and improving the reliability of the seal. At the same time, the corrugated washer 151 can, to a certain extent, buffer the impact of pressure changes within the battery pack on the cover 2, extending the service life of the seal and ensuring that the vent valve maintains good sealing performance during long-term use.

[0043] A second sealing groove 16 is also provided on the bottom end face of the base 1, and a second sealing ring 17 is snapped into the second sealing groove 16. When the exhaust valve is installed on the battery pack, the bottom of the base 1 contacts the battery pack, and the second sealing ring 17 fits tightly against the surface of the battery pack, forming an effective seal. This further prevents gas inside the battery pack from leaking out from the gap between the base 1 and the battery pack, and also prevents foreign objects such as dust and moisture from entering the battery pack, ensuring a stable working environment for the battery pack, improving the sealing performance of the exhaust valve, and also acting as a buffer to reduce the hard contact between the base 1 and the battery pack, reducing the risk of damage to the exhaust valve and battery pack caused by collisions or vibrations, improving the installation stability between the exhaust valve and the battery pack, reducing loosening caused by vibrations or pressure changes, and further improving the overall reliability of the exhaust valve.

[0044] The base 1 has several mounting ears 18 along its edge, each with a first mounting hole 181. The base 1 also has several second mounting holes 19 along its edge. The first mounting hole 181 on each of the mounting ears 18 provides multiple mounting methods for the exhaust valve, facilitating its secure fixation to the battery pack. The second mounting holes 19 can be used to fix the exhaust valve in different positions or in conjunction with other fasteners to enhance its installation strength and stability, ensuring even force distribution during installation, improving the overall structural stability, and allowing the exhaust valve to adapt to different types of battery packs and installation environments. This improves the exhaust valve's versatility and applicability, ensuring it effectively performs its explosion-proof and pressure-relief functions.

[0045] Example 3: The difference from Examples 1 and 2 is that, as shown in Example 3... Figure 7 , Figure 8 Two connectors 3 are provided at the connection between the cover 2 and the base 1. However, no locking component 21 or switch component 4 is provided. By using the pop-up component 5 as a pop-up cylinder 52, and linking the solenoid valve 44, pressure sensor and pop-up cylinder 52 together, the two ends of the pop-up cylinder 52 are respectively hinged to the cover 2 and the base 1. When the pressure in the battery pack reaches the threshold, the solenoid valve 44 is energized in the forward direction to drive the cylinder 52 to extend, which can open the exhaust valve within two seconds. When the pressure relief is completed and the exhaust valve needs to be closed, the solenoid valve 44 is energized in the reverse direction to drive the cylinder 52 to reset and close the exhaust valve.

[0046] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An explosion-proof exhaust valve comprising a base, a cover body being connected to the base, characterized in that: The base has an exhaust port, one end of the cover has a connector that is rotatably connected to the base, the end of the cover away from the connector has a locking member, the base also has a fixing port, the fixing port has a switch that is linked to the locking member, the switch is linked to a pressure sensor, and the base also has a pop-up member for popping up the cover.

2. The explosion relief exhaust valve of claim 1, wherein: The switching component includes a lock housing, a lock hook disposed within the lock housing, a pull rod for rotating the lock hook, and a solenoid valve for moving the pull rod. Sliding grooves are provided on both sides of the lock housing. The locking component includes a locking mounting plate and a latch disposed perpendicular to the locking mounting plate. The latch and the lock hook work together to lock the cover and the base.

3. The explosion relief exhaust valve of claim 2, wherein: The lock housing is also provided with protective connecting plates on both sides. The protective connecting plate is provided with a connecting support plate at one end near the base. The connecting support plate is provided with a number of first connecting holes and the protective connecting plate is provided with a number of second connecting holes. Connecting bolts for fixing the switch and the base are inserted into the first connecting holes and the second connecting holes.

4. The explosion relief exhaust valve of claim 3, wherein: The base has a receiving groove for accommodating the cover, and a first sealing groove is provided at the bottom of the receiving groove. A first sealing ring is engaged in the first sealing groove, and a wave-shaped washer is also provided on the side of the first sealing ring near the cover.

5. The explosion relief exhaust valve of claim 4, wherein: A second sealing groove is also provided on the bottom end face of the base, and a second sealing ring is engaged in the second sealing groove.

6. The explosion relief vent valve according to any one of claims 1 to 4, characterized in that: The base has several mounting ears at its edge, each mounting ear having a first mounting hole, and the base also has several second mounting holes at its edge.

7. The explosion relief exhaust valve of claim 6, wherein: The connector includes a fixed base and a rotating base. The fixed base has a rotating groove in the middle and rotating fixing holes on both sides of the rotating groove. The rotating base has a rotating hole through it axially. A rotating shaft passes through the rotating hole and its two ends are engaged with the rotating fixing holes. The end of the rotating base away from the rotating hole is provided with a mounting plate for connecting the cover. The mounting plate has several cover plate fixing holes and fixing bolts for connecting the mounting plate and the cover pass through the cover plate fixing holes.

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