Explosion-proof valve, battery pack, vehicle, and electrical device

Abstract

The utility model discloses a kind of explosion-proof valve, battery pack, vehicle and electric equipment, it is related to battery technical field, explosion-proof valve includes: valve body and sealing assembly, the sealing assembly is movably installed in the valve body, the valve body is equipped with air inlet hole and exhaust hole;Wherein, the sealing assembly includes special-shaped sealing part, the valve body includes special-shaped cooperation part, the special-shaped sealing part is formed special-shaped sealing cooperation with the special-shaped cooperation part when the sealing assembly in sealing position, and the special-shaped sealing part is separated with the special-shaped cooperation part and forms pressure relief passage when pressure relief position, the pressure relief passage is communicated between the air inlet hole and exhaust hole.According to the explosion-proof valve of the utility model, strong sealing ability can effectively prevent water from seeping into the valve body, into the internal equipment, affect the normal operation of equipment, and strong pressure relief capacity, high pressure relief efficiency, can realize fast pressure relief.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an explosion-proof valve, a battery pack having the explosion-proof valve, a vehicle having the battery pack, and electrical equipment having the battery pack. Background Technology

[0002] In related technologies, the sealing capacity of explosion-proof valves is insufficient. Excessive external water pressure can easily cause water to seep into the equipment. Furthermore, the vent is located directly in front of the explosion-proof valve, and if the diameter of the vent is too large, foreign objects can easily enter and damage the waterproof and breathable membrane. Consequently, the diameter of the vent needs to be small, resulting in limited exhaust volume, indicating room for improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an explosion-proof valve. The explosion-proof valve has strong sealing capabilities, effectively preventing water from seeping into the valve body and entering the equipment, thus preventing any impact on the normal operation of the equipment. Furthermore, it has strong pressure relief capabilities and high pressure relief efficiency, enabling rapid pressure relief.

[0004] An explosion-proof valve according to an embodiment of the present invention includes: a valve body and a sealing assembly, wherein the sealing assembly is movably installed in the valve body, and the valve body is provided with an air inlet and an exhaust outlet; wherein the sealing assembly includes a shaped sealing portion, and the valve body includes a shaped mating portion, wherein when the sealing assembly is in the sealing position, the shaped sealing portion and the shaped mating portion form a shaped sealing fit, and when the sealing assembly is in the depressurization position, the shaped sealing portion and the shaped mating portion separate and form a depressurization channel, the depressurization channel being connected between the air inlet and the exhaust outlet.

[0005] According to the embodiments of the present invention, the explosion-proof valve has an irregularly shaped sealing part on the sealing component and an irregularly shaped mating part on the valve body. When the sealing component is in the sealing position, the irregularly shaped sealing part and the irregularly shaped mating part form an irregularly shaped sealing fit, thereby achieving a seal between the sealing component and the valve body. This enhances the sealing performance of the explosion-proof valve and effectively prevents foreign objects such as water, mud, and dust from entering the valve body through the mating gap between the sealing component and the valve body. Especially when the equipment is submerged in water, the water pressure can also act on the surface of the sealing component, increasing the sealing force between the irregularly shaped sealing part and the irregularly shaped mating part, enhancing the sealing effect, and making the irregularly shaped sealing part and the irregularly shaped mating part fit more tightly, preventing water from seeping into the valve body through gaps and entering the equipment, thus affecting the normal operation of the equipment. Furthermore, when the sealing component is in the pressure relief position, the irregularly shaped sealing part and the irregularly shaped mating part separate and form a pressure relief channel connecting the air inlet and the exhaust port, achieving rapid pressure relief, releasing a large amount of gas, and improving the pressure relief capacity and efficiency.

[0006] According to some embodiments of the explosion-proof valve of the present invention, the sealing component and the valve body further form a waterproof and breathable channel, which is configured to be normally connected between the air inlet and the exhaust port.

[0007] According to some embodiments of the explosion-proof valve of the present invention, the sealing assembly includes a connected sealing element and a guide element, the irregularly shaped sealing part is disposed on the sealing element, the guide element is guided and slidably engaged with the valve body, and the waterproof and ventilated channel includes a ventilated gap formed between the guide element and the valve body.

[0008] According to some embodiments of the explosion-proof valve of the present invention, the valve body is provided with a guide sleeve, at least a portion of the guide member extends into the guide sleeve, the guide member and the guide sleeve are guided and slidably engaged, and the vent gap is formed between the outer wall of the guide member and the inner wall of the guide sleeve.

[0009] According to some embodiments of the present invention, the explosion-proof valve includes a valve body and a valve cover, the valve cover is detachably connected to the valve body, the guide sleeve is disposed on the inner side of the valve cover, and the irregular mating part is disposed on the inner side of the valve body.

[0010] According to some embodiments of the explosion-proof valve of the present invention, the air inlet is located at one end of the valve body away from the valve cover and is axially opposite to the sealing assembly; and / or, the exhaust port is located on the valve body and is located radially outside the sealing assembly.

[0011] According to some embodiments of the explosion-proof valve of the present invention, the guide member is constructed as a hollow conduit, and the waterproof and breathable channel includes a breathable cavity formed inside the guide member. The breathable cavity and the breathable gap are sequentially connected between the air inlet and the exhaust port.

[0012] According to some embodiments of the explosion-proof valve of the present invention, at least one waterproof and breathable membrane is provided in the venting cavity.

[0013] According to some embodiments of the explosion-proof valve of the present invention, there are multiple waterproof and breathable membranes, and the multiple waterproof and breathable membranes are distributed axially spaced apart in the breathable cavity; or, there are two waterproof and breathable membranes, and the two waterproof and breathable membranes are respectively located at the two ends of the axial direction of the breathable cavity.

[0014] According to some embodiments of the explosion-proof valve of the present invention, the sealing element is sleeved outside the guide element and is axially limited in cooperation with the guide element.

[0015] According to some embodiments of the explosion-proof valve of the present invention, the irregularly shaped sealing part is located on the side of the sealing element away from the waterproof and breathable channel.

[0016] According to some embodiments of the explosion-proof valve of the present invention, the minimum flow cross-sectional area of ​​the waterproof and breathable channel is smaller than the minimum flow cross-sectional area of ​​the pressure relief channel.

[0017] According to some embodiments of the explosion-proof valve of the present invention, one of the irregular sealing part and the irregular mating part is configured as at least one sealing tooth and the other is configured as at least one sealing groove, wherein at least one sealing tooth and at least one sealing groove are in a one-to-one sealing fit.

[0018] According to some embodiments of the explosion-proof valve of the present invention, the sealing teeth are arranged in annular extension and surround the air inlet; and / or, the sealing groove is arranged in annular extension and surrounds the air inlet.

[0019] According to some embodiments of the present invention, the explosion-proof valve further includes an elastic element for applying an elastic force to the sealing assembly to move from the pressure relief position toward the sealing position. The pressure at the air inlet is adapted to overcome the elastic force of the elastic element to push the sealing assembly to move from the sealing position toward the pressure relief position.

[0020] According to some embodiments of the explosion-proof valve of the present invention, the irregularly shaped sealing portion is located on the side of the sealing assembly opposite to the elastic element.

[0021] This utility model also proposes a battery pack.

[0022] According to an embodiment of the present utility model, the battery pack includes a battery pack housing and an explosion-proof valve as described in any of the above embodiments. The explosion-proof valve is detachably installed on the battery pack housing, and the air inlet communicates with the interior of the battery pack housing, while the exhaust port communicates with the exterior of the battery pack housing.

[0023] This utility model also proposes a vehicle.

[0024] The vehicle according to an embodiment of the present invention includes the battery pack described in the above embodiments.

[0025] This utility model also proposes an electrical device.

[0026] The electrical equipment according to the present invention includes the battery pack described in the above embodiments.

[0027] The battery pack, the vehicle, the electrical equipment, and the explosion-proof valve mentioned above all have the same advantages over the prior art, and will not be repeated here.

[0028] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a structural schematic diagram of the explosion-proof valve according to an embodiment of the present utility model;

[0031] Figure 2 This is an exploded view of the explosion-proof valve according to an embodiment of the present utility model;

[0032] Figure 3 yes Figure 2 Cross-sectional view;

[0033] Figure 4 The cross-section of the explosion-proof valve according to an embodiment of the present utility model. Figure 1 (When the sealing assembly is in the sealing position);

[0034] Figure 5 The cross-section of the explosion-proof valve according to an embodiment of the present utility model. Figure 2 (When the sealing assembly is in the depressurized position).

[0035] Figure label:

[0036] Explosion-proof valve 100,

[0037] Valve body 1, valve main body 11, irregularly shaped mating part 111, air inlet 112, air outlet 113, valve cover 12, guide sleeve 121, connecting part 122, and cover part 123.

[0038] Sealing assembly 2, sealing element 21, irregularly shaped sealing part 211, limiting fitting part 212, through hole 213, guide element 22, limiting part 221,

[0039] Pressure relief channel 3, waterproof and breathable channel 4, breathable cavity 42, waterproof and breathable membrane 5, elastic element 6, sealing ring 7. Detailed Implementation

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] The following is for reference. Figures 1-5 The explosion-proof valve 100 according to an embodiment of the present utility model has strong sealing ability, which can effectively prevent water from seeping into the valve body 1 and entering the equipment, thus affecting the normal operation of the equipment. It also has strong pressure relief ability and high pressure relief efficiency, which can achieve rapid pressure relief.

[0044] like Figures 1-5 As shown, an explosion-proof valve 100 according to an embodiment of the present invention includes: a valve body 1 and a sealing assembly 2.

[0045] It is understood that the explosion-proof valve 100 is a safety device used to prevent explosions or safety accidents caused by abnormal increases in internal pressure of equipment or systems. Its main function is to automatically open and release internal pressure when the internal pressure exceeds a preset threshold, thereby protecting the safety of equipment and personnel. The explosion-proof valve 100 of this utility model can be applied to flammable, explosive, or high-temperature and high-pressure equipment such as battery systems, hydraulic systems, storage equipment, and pipeline systems.

[0046] The valve body 1 is the main structure of the explosion-proof valve 100. Its interior is hollow to form a cavity. The sealing component 2 is movably installed inside the valve body 1, that is, the sealing component 2 is installed inside the cavity and can move inside the valve body 1 to achieve the sealing effect of the explosion-proof valve 100 during normal operation and the pressure relief effect when the internal pressure of the equipment is abnormal.

[0047] Under normal circumstances, when the internal pressure of the equipment is normal, the explosion-proof valve 100 connects the external environment with the internal structure of the equipment, allowing gas to flow freely and achieving pressure balance. At this time, the sealing component 2 mainly serves to achieve a sealing function, preventing foreign objects from entering the valve body 1 and blocking it, thus affecting the normal operation of the explosion-proof valve 100 and impacting the equipment's operation. When the internal pressure of the equipment exceeds the set value, i.e., when an abnormal and sudden increase occurs, the sealing component 2 will move within the valve body 1 to achieve a pressure relief function, allowing the high-pressure gas inside the equipment to be quickly discharged to the external environment, preventing thermal runaway and pressure surge that could lead to an explosion.

[0048] The valve body 1 is provided with an air inlet 112 and an exhaust port 113. The air inlet 112 connects the inside of the equipment with the inside of the valve body 1, so that the gas inside the equipment can flow into the valve body 1. The exhaust port 113 is mainly used to discharge gas. The exhaust port 113 connects the inside of the valve body 1 with the external environment, so that the gas inside the valve body 1 can be discharged to the external environment. Thus, the gas inside the equipment can be discharged to the external environment in sequence through the air inlet 112, the inside of the valve body and the exhaust port 113 to achieve pressure relief.

[0049] Furthermore, the sealing assembly 2 includes a shaped sealing part 211, and the valve body 1 includes a shaped mating part 111. When the sealing assembly 2 is in the sealing position, the shaped sealing part 211 and the shaped mating part 111 form a shaped sealing fit.

[0050] In other words, the irregularly shaped sealing part 211 is adapted to the irregularly shaped mating part 111. For example, the irregularly shaped sealing part 211 can be set as a regular or irregular protruding structure, while the irregularly shaped mating part 111 is set as a matching groove structure. In this way, when the sealing component 2 is in the sealing position, that is, when the internal pressure of the equipment is normal, the irregularly shaped sealing part 211 and the irregularly shaped mating part 111 fit tightly together to form an irregularly shaped sealing fit, thereby achieving a seal between the sealing component 2 and the valve body 1, enhancing the sealing performance of the explosion-proof valve 100, and effectively preventing foreign objects such as water, mud, and dust from entering the valve body 1 through the mating gap between the sealing component 2 and the valve body 1. Especially when the equipment is submerged in water, the water pressure can also act on the surface of the sealing component 2, increasing the sealing force of the irregularly shaped sealing part 211 and the irregularly shaped mating part 111, enhancing the sealing effect, and making the irregularly shaped sealing part 211 and the irregularly shaped mating part 111 fit more tightly, preventing water from seeping into the valve body 1 through the gap and then entering the equipment, thus affecting the normal operation of the equipment.

[0051] Furthermore, when the sealing assembly 2 is in the pressure relief position, the irregular sealing part 211 separates from the irregular mating part 111 and forms a pressure relief channel 3, which is connected between the air inlet 112 and the exhaust port 113.

[0052] In other words, when the internal pressure of the equipment is abnormal, the sealing component 2 is pushed to the sealing position by the high-pressure airflow, so that the irregular sealing part 211 separates from the irregular mating part 111. A certain space is separated between the irregular sealing part 211 and the irregular mating part 111 to form a pressure relief channel 3. The pressure relief channel 3 is connected between the air inlet 112 and the exhaust port 113. That is, the pressure relief channel 3, the air inlet 112 and the exhaust port 113 are in a connected state. Thus, the high-pressure gas inside the equipment can flow through the air inlet 112 and the pressure relief channel 3 to the exhaust port 113, and then be quickly discharged through the exhaust port 113, realizing rapid pressure relief, releasing a large amount of gas, and improving the pressure relief capacity and pressure relief efficiency.

[0053] And once the pressure relief is complete, that is, once the internal pressure of the equipment is balanced with the external environmental pressure again, the sealing component 2 can automatically reset to the sealing position. Thus, the explosion-proof valve 100 can be reused, which is flexible and convenient and reduces costs.

[0054] According to the embodiment of the present invention, the explosion-proof valve 100, by providing a non-circular sealing part 211 on the sealing assembly 2 and a non-circular mating part 111 on the valve body 1, forms a non-circular sealing fit between the non-circular sealing part 211 and the non-circular mating part 111 when the sealing assembly 2 is in the sealing position, thereby achieving a seal between the sealing assembly 2 and the valve body 1. This enhances the sealing performance of the explosion-proof valve 100 and effectively prevents foreign objects such as water, mud, and dust from entering the valve body 1 through the mating gap between the sealing assembly 2 and the valve body 1. Especially when the equipment is submerged in water, the water pressure can also act on the sealing assembly. 2. The surface enhances the sealing force between the irregularly shaped sealing part 211 and the irregularly shaped mating part 111, improving the sealing effect and making the irregularly shaped sealing part 211 and the irregularly shaped mating part 111 fit more tightly, preventing water from seeping into the valve body 1 through gaps and entering the equipment, thus affecting the normal operation of the equipment. It also allows the irregularly shaped sealing part 211 and the irregularly shaped mating part 111 to separate when the sealing assembly 2 is in the pressure relief position, forming a pressure relief channel 3 connecting the air inlet 112 and the exhaust 113, achieving rapid pressure relief, releasing a large amount of gas, and improving the pressure relief capacity and efficiency.

[0055] In some embodiments, the sealing assembly 2 and the valve body 1 also form a waterproof and breathable channel 4, which allows gas to pass through and prevents liquid from passing through, thereby achieving both a breathable effect and a waterproof effect.

[0056] The waterproof and breathable channel 4 is designed to be normally connected between the air inlet 112 and the exhaust port 113. That is, when the internal pressure of the equipment is stable, one end of the waterproof and breathable channel 4 is connected to the exhaust port 113, and the other end of the waterproof and breathable channel 4 is connected to the air inlet 112. In this way, the inside of the equipment is connected to the external environment, and the gas in the external environment and the gas inside the equipment can flow freely through the waterproof and breathable channel 4 to achieve pressure balance between the inside and outside of the equipment. At the same time, it ensures the waterproof effect and prevents water from entering the inside of the equipment through the waterproof and breathable channel 4, which could cause a safety accident.

[0057] In some embodiments, the sealing assembly 2 includes a connected seal 21 and a guide 22, a shaped sealing portion 211 is disposed on the seal 21, the guide 22 is guided and slidably engaged with the valve body 1, and the waterproof and breathable channel 4 includes a breathable gap formed between the guide 22 and the valve body 1.

[0058] Specifically, such as Figure 4 As shown, the sealing assembly 2 includes a sealing element 21 and a guide element 22. The sealing element 21 and the guide element 22 are connected as an integral structure. The irregular sealing part 211 is disposed on the sealing element 21. That is, the sealing element 21 is mainly used to achieve the sealing effect. The sealing element 21 can be made of an elastic material so that it can undergo elastic deformation by contacting and pressing with the irregular mating part 111, thereby achieving a tight fit with the irregular mating part 111 and improving the sealing effect.

[0059] The guide member 22 is mainly used to guide and stabilize the movement of the sealing assembly 2. The guide member 22 can be made of metal to ensure its structural strength and provide stable support for the sealing assembly. The guide member 22 slides in a guide fit with the valve body 1. That is, the guide member 22 and the valve body 1 can be configured as a guide rail and guide groove, guide post and guide sleeve, etc., to guide the guide member 22 to slide linearly along the axial direction relative to the valve body 1 without lateral deviation. This ensures that the sealing assembly 2 can move stably along the axial direction. When it moves to the pressure relief position, the irregular sealing part 211 separates from the irregular mating part 111 to form a pressure relief channel 3. At the same time, during the reset, it moves stably along the axial direction. When it moves to the sealing position, the irregular sealing part 211 contacts the irregular mating part 111 to form a reliable sealing fit. This prevents the sealing member 21 from deviating, which could lead to a gap between the irregular sealing part 211 and the irregular mating part 111, allowing external moisture to penetrate into the equipment.

[0060] In practical design, the seal 21 can be composite molded with the guide 22. When the seal 21 is made of rubber and the guide 22 is made of metal, the rubber seal 21 and the metal guide 22 can be combined through a vulcanization process to form a sealing assembly 2 made of composite material. The vulcanization process can firmly bond the seal 21 and the guide 22 together, avoiding gaps or separation between them, ensuring the stability and reliability of the sealing assembly 2 in long-term use, and enhancing its mechanical properties. This gives it the high elasticity and shock resistance of rubber and the high strength of metal, ensuring both the sealing performance and stable and reliable movement of the sealing assembly 2, thus improving its durability.

[0061] In some embodiments, the valve body 1 is provided with a guide sleeve 121, at least a portion of the guide member 22 extends into the guide sleeve 121, the guide member 22 and the guide sleeve 121 are guided and slidably engaged, and an air gap is formed between the outer wall of the guide member 22 and the inner wall of the guide sleeve 121.

[0062] Specifically, such as Figure 4 and Figure 5 As shown, a guide sleeve 121 is provided inside the valve body 1. The guide element 22 shown in the figure is constructed as a guide rod, and the guide sleeve 121 is constructed as a cylinder. Of course, the guide element 22 and the guide sleeve 121 can also be set to other shapes, as long as the shapes of the two are compatible. Among them, such as Figure 4 and Figure 5 The guide sleeve 121 and guide member 22 shown are hollow inside and open on one side, with the open side facing the sealing assembly 2. The guide sleeve 121 extends along the movement direction of the sealing assembly 2, that is, the guide sleeve 121 and the guide member 22 are coaxially distributed. The inner diameter of the guide sleeve 121 is smaller than the outer diameter of the guide member 22.

[0063] Thus, at least a portion of the guide member 22, such as Figure 4 and Figure 5 The diagram shows the upper part of the guide member 22, which extends upward into the guide sleeve 121. At least a portion of the outer peripheral wall of the guide member 22 is directly opposite to at least a portion of the inner peripheral wall of the guide sleeve 121, and a certain gap is separated between the outer peripheral wall of the guide member 22 and the inner peripheral wall of the guide sleeve 121. This achieves a guiding sliding fit between the guide member 22 and the guide sleeve 121, allowing the guide member 22 to slide up and down along the inner wall of the guide sleeve 121. In other words, the guide sleeve 121 guides the guide member 22, ensuring that the guide member 22 can only move axially in a straight line along the extension direction of the guide sleeve 121, preventing lateral deviation during the movement of the guide member 22, and creating an air gap.

[0064] Furthermore, since a certain gap is formed between the outer peripheral wall of the guide member 22 and the inner peripheral wall of the guide sleeve 121 to form a ventilation gap, gas from the external environment can flow from the exhaust port 113 to the ventilation gap, and then from the ventilation gap to the air inlet 112, and then enter the equipment. Gas inside the equipment can also flow from the air inlet 112 to the ventilation gap, and then from the ventilation gap to the exhaust port 113, and then be discharged to the external environment. Thus, gas flow between the external environment and the equipment is achieved, and pressure balance is achieved.

[0065] In practice, such as Figure 5 As shown, when the internal pressure of the equipment surges, the high-pressure airflow acts on the sealing component 2 to push the sealing component 2 upward. At this time, the guide 22 will move upward along the inner wall of the guide sleeve 121, so that more of the guide 22 enters the guide sleeve 121. At the same time, the sealing component 21 will move upward so that the irregular sealing part 211 moves away from the irregular mating part 111, thereby forming the pressure relief channel 3. Due to the guiding effect of the guide sleeve 121, the pressure relief channel 3 can be stably formed and kept unobstructed, avoiding blockage at the pressure relief channel 3 and affecting the pressure relief effect.

[0066] In some embodiments, the valve body 1 includes a valve body 11 and a valve cover 12. The valve cover 12 is detachably connected to the valve body 11, a guide sleeve 121 is disposed inside the valve cover 12, and a non-circular mating part 111 is disposed inside the valve body 11.

[0067] Specifically, such as Figures 1-5 As shown, the valve body 1 includes a valve body 11 and a valve cover 12. The valve cover 12 is detachably connected to the valve body 11. That is, the valve cover 12 and the valve body 11 can be detachably connected to the valve body 11 by means of threaded connection, snap-fit ​​connection, plug-in connection, etc. This makes it convenient to install and remove the valve cover 12. When the valve cover 12 is damaged, it can be quickly and easily removed for repair and replacement, which is flexible and convenient.

[0068] Figures 1-5 The diagram shows the valve cover 12 and the valve body 11 connected by a threaded connection, as shown. Figure 4As shown, the valve cover 12 includes a connecting portion 122 and a covering portion 123 connected together. The radial dimension of the covering portion 123 is larger than that of the connecting portion 122, and the outer diameter of the connecting portion 122 matches the inner diameter of the valve body 11. The outer diameter of the covering portion 123 also matches the outer diameter of the valve body 11, allowing the connecting portion 122 to extend into the valve body 11 for connection. The covering portion 123 covers the open side of the valve body 11, so that the valve cover 12 and the valve body 11 together define a cavity. The outer peripheral wall of the covering portion 123 has an external thread, and the inner peripheral wall of the valve body 11 has an internal thread that matches the external thread. Thus, the connecting portion 122 can be inserted into the valve body 1 by rotating the valve cover 12, achieving a threaded connection between the valve cover 12 and the valve body 11, ensuring the stability and reliability of the connection between the valve cover 12 and the valve body 11.

[0069] In addition, such as Figure 4 and Figure 5 As shown, after the cover portion 123 of the valve cover 12 is placed on the open side of the valve body 11, the cover portion 123 contacts the end face of the valve body 11 to play a mutual limiting role, preventing relative movement between the valve cover 12 and the valve body 11. When an external impact force hits the outer end face of the valve cover 12, the cover portion 123 can effectively resist the impact force, avoiding the impact force from causing the connection between the valve cover 12 and the valve body 11 to loosen, thereby further improving the connection stability and reliability between the valve cover 12 and the valve body 11.

[0070] Furthermore, such as Figure 4 and Figure 5 As shown, the guide sleeve 121 is disposed inside the valve cover 12 and is positioned toward the irregular mating part 111. The irregular mating part 111 is disposed inside the valve body 11 and is positioned toward the guide sleeve 121. The sealing assembly 2 is located between the guide sleeve 121 and the irregular mating part 111, thereby allowing the sealing assembly 2 to move between the guide sleeve 121 and the irregular mating part 111.

[0071] in, Figure 4 and Figure 5 The up-down direction shown is the movement direction of the sealing assembly 2. Thus, when the sealing assembly 2 moves upward, the sealing element 21 will move away from the irregular fitting part 111 of the valve body 1 to form a pressure relief channel 3. The upper end face of the sealing element 21 will press against the end face of the connecting part 122 to limit the sealing element 21 and prevent the valve cover 12 from being pushed out due to excessive movement displacement of the sealing assembly 2. When the sealing assembly 2 moves downward, the sealing element 21 will approach and contact the irregular fitting part 111 of the valve body 1 so that the irregular sealing part 211 and the irregular fitting part 111 are sealed together, thereby achieving a seal.

[0072] In some embodiments, the air inlet 112 is located at the end of the valve body 11 away from the valve cover 12 and is axially opposite to the sealing assembly 2.

[0073] This facilitates the connection between the air inlet 112 and the interior of the equipment, allowing the gas inside the equipment to directly act on the sealing component 2 to push the sealing component 2 to move linearly along the axial direction. When it moves to the pressure relief position, the valve cover 12 limits the sealing component 2 to form a stable pressure relief channel 3.

[0074] Specifically, such as Figure 4 and Figure 5 As shown, the air inlet 112 is located at the lower end of the valve body 11, and the valve cover 12 is connected to the upper end of the valve body 11. The air inlet 112 and the sealing assembly 2 are distributed opposite each other along the axial direction.

[0075] In other embodiments, the vent 113 is provided on the valve body 11 and is located radially outward of the sealing assembly 2.

[0076] Therefore, the sealing component 2 blocks the vent hole 113 radially, thereby blocking foreign objects at the vent hole 113 to prevent external foreign objects such as mud, sand, and water from entering the valve body 1 from the vent hole 113, blocking the waterproof and breathable channel 4, and affecting the smooth flow of air.

[0077] Specifically, such as Figure 4 and Figure 5 As shown, the vent 113 is located on the side wall of the valve body 11 and extends through the side wall thickness direction of the valve body 11. Thus, when the explosion-proof valve 100 is applied to the battery pack of a vehicle and installed on the front side of the battery pack, if the vehicle passes through water or sandy roads at a high speed, water, mud, and other foreign objects will only impact the valve cover 12 and will not directly impact the vent 113, reducing the possibility of foreign objects entering the valve body 1. Furthermore, the radial outer side of the sealing component 2 blocks foreign objects, further preventing mud, water, and other foreign objects from entering the explosion-proof valve 100 and blocking the waterproof and breathable channel 4. In addition, the sealing effect of the irregularly shaped sealing part 211 of the sealing component 2 further prevents water from extending into the air inlet 112 and then into the battery pack. Therefore, the sealing performance of the explosion-proof valve 100 is greatly improved.

[0078] In actual design, the exhaust hole 113 can be a circular hole, a square hole, an elliptical hole, an irregular hole, or a hole of other shapes. It can be flexibly set according to actual needs and is not limited to the one described in this embodiment.

[0079] In addition, such as Figure 4As shown, the outer radial side of the sealing component 2 can be spaced a certain distance from the vent hole 113 to form a gap, so that the vent hole 113 is connected to the vent gap. This ensures the overall unobstructedness of the waterproof and ventilated channel 4, which can realize the airflow between the external environment and the inside of the battery pack, thereby facilitating the realization of air pressure balance.

[0080] And multiple exhaust ports 113 can be set. Figures 1-5 Taking the setting of six vent holes 113 as an example, by setting multiple vent holes 113, pressure can be released at multiple locations simultaneously, thereby improving the pressure release efficiency and achieving rapid pressure release.

[0081] In some embodiments, the guide member 22 is constructed as a hollow conduit, and the waterproof and breathable channel 4 includes a breathable cavity 42 formed inside the guide member 22. The breathable cavity 42 and the breathable gap are sequentially connected between the air inlet 112 and the exhaust port 113.

[0082] Specifically, such as Figures 3-5 As shown, the guide member 22 is constructed as a hollow conduit, that is, the guide member 22 is constructed as a hollow cylindrical structure. The hollow cavity inside the guide member 22 is a venting cavity 42. Both ends of the venting cavity 42 are open so that the upper end of the venting cavity 42 is connected to the venting gap, and the lower end of the venting cavity 42 is connected to the air inlet 112. Thus, the venting cavity 42 and the venting gap are sequentially connected between the air inlet 112 and the exhaust port 113. In this way, the gas inside the equipment can flow to the external environment in sequence through the air inlet 112, the venting cavity 42, the venting gap, and the exhaust port 113. The gas in the external environment can also flow to the inside of the equipment in sequence through the exhaust port 113, the venting gap, the venting cavity 42, and the air inlet 112. Thus, the connection between the external environment and the inside of the equipment is realized. When the gas pressure inside the equipment is within the preset normal range, the gas in the external environment and the gas inside the equipment can flow to each other and maintain a stable pressure balance.

[0083] In some embodiments, at least one waterproof and breathable membrane 5 is provided inside the ventilated cavity 42.

[0084] In other words, one, two, three, or even more waterproof and breathable membranes 5 can be installed inside the venting cavity 42. By installing the waterproof and breathable membranes 5 inside the venting cavity 42, gas flowing from the venting gap into the venting cavity 42 can be allowed to enter the air inlet 112, while further blocking the water flow and preventing the water flow from entering the air inlet 112 through the waterproof and breathable membranes 5 and then entering the equipment. This further improves the sealing and waterproof performance of the explosion-proof valve 100.

[0085] In some embodiments, there are multiple waterproof and breathable membranes 5, and the multiple waterproof and breathable membranes 5 are distributed axially spaced apart within the breathable cavity 42.

[0086] In other words, the waterproof and breathable membrane 5 can be set in two, three or more. Setting multiple waterproof and breathable membranes 5 can form a multi-layer waterproof barrier, further improving the waterproof performance and preventing water from entering the equipment. Even if one of the waterproof and breathable membranes 5 is damaged or fails, the other waterproof and breathable membranes 5 can still continue to function to ensure the waterproof effect, thereby improving the reliability of waterproofing.

[0087] Multiple waterproof and breathable membranes 5 are distributed axially spaced within the breathable cavity 42 to provide waterproofing at multiple locations within the breathable cavity 42, thus avoiding interference between the multiple waterproof and breathable membranes 5 and achieving reliable waterproofing.

[0088] Alternatively, there may be two waterproof and breathable membranes 5, with the two waterproof and breathable membranes 5 located at the two axial ends of the breathable cavity 42 respectively.

[0089] Specifically, such as Figure 4 and Figure 5 As shown, two waterproof and breathable membranes 5 are provided, and the two waterproof and breathable membranes 5 are located at the two axial ends of the breathable cavity 42, respectively. Figure 4 and Figure 5 As shown in the vertical direction, one waterproof and breathable membrane 5 is located at the upper end of the breathable cavity 42 and is connected to the external environment, while the other waterproof and breathable membrane 5 is located at the lower end of the breathable cavity 42 and is connected to the internal environment of the equipment.

[0090] Thus, the first waterproof and breathable membrane 5 can perform the first step of blocking external moisture to prevent it from entering the breathable cavity 42, and the second waterproof and breathable membrane 5 can perform the second step of blocking external moisture to prevent moisture from entering the equipment. In other words, even if the first waterproof and breathable membrane 5 is damaged, the second waterproof and breathable membrane 5 can still function to prevent moisture from entering the equipment.

[0091] In practical design, such as Figure 4 and Figure 5 As shown, the guide sleeve 121 has a certain axial length, which determines the upward displacement of the guide member 22, and thus the flow cross-sectional area of ​​the pressure relief channel 3. Its axial length can be flexibly set according to actual conditions and requirements. The lower end face of the guide sleeve 121 can act as a barrier against impact forces. External pressure and foreign objects can be blocked and relieved by the lower end face of the guide sleeve 121 and the outer peripheral wall of the guide member 22, thereby greatly reducing the impact force on the waterproof and breathable membrane 5 and preventing the waterproof and breathable membrane 5 from being struck by foreign objects, thus effectively preventing damage to the waterproof and breathable membrane 5.

[0092] In some embodiments, the seal 21 is sleeved outside the guide 22 and is axially limited to the guide 22.

[0093] In other words, the seal 21 has a through hole 213 inside, and the through hole 213 matches the shape and size of the guide 22, so that the guide 22 can be inserted through the through hole 213, so that the seal 21 is fitted over the guide 22, thereby realizing the connection between the seal 21 and the guide 22.

[0094] A limiting part 221 can be provided on the guide member 22, and a limiting mating part 212 can be provided on the seal member 21. The limiting part 221 and the limiting mating part 212 are matched in shape and size. Thus, through the limiting mating part 221 and the limiting mating part 212, the axial limiting mating of the seal member 21 and the guide member 22 can be achieved, forming a mutual limiting effect between the seal member 21 and the guide member 22. Thus, during the movement of the sealing assembly 2, the relative displacement between the guide member 22 and the seal member 21 can be restricted. For example, the seal member 21 can be restricted from shifting, tilting, or even detaching from the guide member 22, thereby ensuring that the sealing assembly 2 can perform stable axial movement.

[0095] Specifically, such as Figure 2 As shown, the seal 21 is constructed as an annular sealing ring, as... Figures 3-5 As shown, a through hole 213 is formed inside the guide member 22. The inner diameter of the through hole 213 matches the outer diameter of the guide member 22. The through hole 213 is recessed in the middle to form a limiting groove, that is, the limiting mating part 212 is constructed as a limiting groove. The outer peripheral wall of the guide member 22 protrudes to form a limiting protrusion, that is, the limiting part 221 is constructed as a limiting protrusion. The limiting groove and the limiting protrusion match, so that the sealing member 21 can be smoothly fitted onto the guide member 22 and axially limited to the guide member 22, realizing a tight and reliable connection between the two, preventing gaps at the connection and affecting the waterproof effect. At the same time, a mutual limiting effect is formed, which helps to maintain the overall structural stability of the sealing assembly 2.

[0096] In some embodiments, the irregularly shaped sealing portion 211 is located on the side of the sealing member 21 that is away from the waterproof and breathable channel 4.

[0097] Therefore, the movement of the sealing component 2 within the valve body 1 enables the mutual conversion between the pressure relief channel 3 and the waterproof and ventilated channel 4, thereby realizing the opening and closing functions of the explosion-proof valve 100. In other words, when the equipment pressure is within the normal range, the explosion-proof valve 100 is in the closed state, forming the waterproof and ventilated channel 4 to effectively balance the small pressure difference between the inside and outside. When the equipment pressure exceeds the normal range, the explosion-proof valve 100 is in the open state, forming the pressure relief channel 3 to achieve rapid pressure relief.

[0098] Specifically, such as Figure 4As shown, the irregularly shaped sealing part 211 is located on the lower surface of the sealing member 21, and the waterproof and breathable channel 4 is located on the upper area of ​​the sealing member 21. Thus, the irregularly shaped sealing part 211 is located on the side of the sealing member 21 away from the waterproof and breathable channel 4. In this way, when the sealing assembly 2 moves upward, the upper surface of the sealing member 21 will press against the valve cover 12 to seal the waterproof and breathable channel 4. At the same time, the irregularly shaped sealing part 211 separates from the irregularly shaped mating part 111 to form a pressure relief channel 3, thereby achieving pressure relief. When the sealing assembly 2 moves downward, the upper surface of the sealing member 21 will separate from the valve cover 12 to form a waterproof and breathable channel 4, thereby achieving the exchange of internal and external airflow and balancing the internal and external pressure difference. At the same time, the irregularly shaped sealing part 211 presses against the irregularly shaped mating part 111 to seal the pressure relief channel 3, preventing external water, mud, leaves and other foreign objects from entering the valve body 1 through the pressure relief channel 3 and then entering the equipment.

[0099] In some embodiments, the minimum flow cross-sectional area of ​​the waterproof and breathable channel 4 is smaller than the minimum flow cross-sectional area of ​​the pressure relief channel 3.

[0100] In other words, at the minimum flow cross-sectional area of ​​the waterproof and breathable channel 4, a smaller amount of gas can flow through, thereby ensuring smooth flow of gas inside and outside while effectively preventing larger foreign objects from entering the valve body 1. On the other hand, the pressure relief channel 3 can flow through a larger amount of gas, thereby quickly discharging more gas and achieving rapid pressure relief.

[0101] Specifically, such as Figure 4 and Figure 5 As shown, the minimum flow cross-sectional area of ​​the waterproof and breathable channel 4 is smaller than that of the pressure relief channel 3. The minimum flow cross-sectional area of ​​the waterproof and breathable channel 4 is located at the vent gap or the vent hole 113. Thus, the waterproof and breathable channel 4 at the vent hole 113 (i.e., the gap between the radial outer side of the seal 21 and the vent hole 113) can effectively prevent foreign objects from entering the valve body 1 and blocking the waterproof and breathable channel 4. The vent gap can further prevent water flow and foreign objects from entering the vent cavity 42, thereby preventing them from entering the equipment. The minimum flow cross-sectional area of ​​the pressure relief channel 3 is larger. In other words, the overall flow cross-sectional area of ​​the pressure relief channel 3 is larger, which can ensure that more gas flows through it and facilitate rapid pressure relief.

[0102] In some embodiments, one of the irregular sealing portion 211 and the irregular mating portion 111 is configured as at least one sealing tooth and the other is configured as at least one sealing groove, wherein the at least one sealing tooth and the at least one sealing groove are sealed and mated in a one-to-one correspondence.

[0103] In other words, the irregular sealing part 211 can be constructed as a sealing tooth and the irregular mating part 111 can be constructed as a sealing groove, or the irregular sealing part 211 can be constructed as a sealing groove and the irregular mating part 111 can be constructed as a sealing tooth, and the sealing tooth and the sealing groove are adapted to each other, so that the sealing tooth can extend into the sealing groove, and the surface of the sealing tooth is tightly fitted with the inner wall of the sealing groove, thereby achieving a sealing fit.

[0104] The sealing teeth and sealing grooves can each be set to multiple, that is, two, three or even more sealing teeth and sealing grooves can be set, and the number of sealing teeth and sealing grooves corresponds to the number of sealing teeth, so that each sealing tooth can extend into the corresponding sealing groove to achieve a sealing fit.

[0105] By setting multiple sealing teeth and sealing grooves, irregular sealing can be performed at multiple locations, thereby enhancing the sealing effect and effectively preventing external water from seeping into the valve body 1 and then entering the equipment through the air inlet 112.

[0106] Specifically, such as Figures 3-5 As shown, the irregular sealing part 211 is constructed as a sealing tooth, and the irregular mating part 111 is constructed as a sealing tooth groove. The cross-section of the sealing tooth can be set as V-shaped, rectangular, circular, elliptical, irregular, etc., and can be flexibly set according to actual needs, and is not limited to the embodiment described herein. Figures 3-5 Taking a V-shaped cross-section of the sealing teeth and two sealing teeth as an example, the two sealing teeth are matched one-to-one with the two sealing grooves. This arrangement allows the sealing surface of one sealing tooth to have two inclined surfaces, which can generate radial expansion force under pressure, making the sealing surface tightly adhere to the inner wall of the sealing groove, thus enhancing the sealing effect. The higher the pressure, the better the sealing effect.

[0107] In practice, when the seal 21 is made of rubber, if it is subjected to an external force directed inwards, the outer surface of the sealing teeth will generate a large contact rebound force and a stronger radial expansion force. This effectively prevents liquid from leaking into the valve body 1, making it less prone to water ingress. Even in the worst-case scenario of submersion, when the explosion-proof valve 100 is submerged, the water pressure inside the valve acts on the upper surface of the seal 21, applying a downward sealing force and enhancing the sealing effect.

[0108] In some embodiments, the sealing teeth are arranged in annular extension and surround the air inlet 112.

[0109] This creates a ring-shaped seal along the entire circumference, preventing water from entering the air inlet 112 from any point along the circumference of the valve body 11, greatly enhancing the sealing and waterproofing effect, and allowing water to enter the equipment.

[0110] In other embodiments, the sealing groove is arranged in annular form, surrounding the air inlet 112.

[0111] This creates a ring-shaped seal along the entire circumference, preventing water from entering the air inlet 112 from any point along the circumference of the valve body 11, greatly enhancing the sealing and waterproofing effect, and allowing water to enter the equipment.

[0112] In some embodiments, the explosion-proof valve 100 further includes an elastic element 6, which is used to apply an elastic force to the sealing assembly 2 to move from the pressure relief position toward the sealing position. The pressure at the air inlet 112 is adapted to overcome the elastic force of the elastic element 6 to push the sealing assembly 2 from the sealing position toward the pressure relief position.

[0113] Specifically, the elastic element 6 can undergo elastic deformation to generate an elastic force to restore its initial state. This elastic force can act on the sealing assembly 2 to drive its movement, thereby opening and closing the valve. Figure 4 As shown, when the explosion-proof valve 100 is in the closed state, the elastic element 6 generates a compressive pre-tightening elastic force, and this elastic force is greater than the internal pressure of the equipment. Therefore, the compressive pre-tightening force is applied to the surface of the sealing assembly 2 to ensure that the sealing element 21 fits tightly against the valve body 11, enhancing the sealing effect and preventing gaps from forming between the sealing element 21 and the valve body 11. Figure 5 As shown, when the internal pressure of the device surges to a level greater than the elastic force of the elastic element 6, the internal pressure of the device, i.e., the pressure at the air inlet 112, will overcome the elastic force of the elastic element 6 to push the sealing assembly 2 from the sealing position toward the pressure relief position. During the movement, the elastic element 6 is gradually compressed. When the sealing assembly 2 moves from the sealing position to the pressure relief position, the compression of the elastic element 6 reaches its maximum, and the flow cross-sectional area of ​​the pressure relief channel 3 reaches its maximum, thus achieving rapid pressure relief.

[0114] After the pressure relief is completed, that is, after the external environmental pressure and the internal pressure of the equipment are re-balanced, the elastic element 6 will extend to apply elastic force to the sealing component 2, pushing the sealing component 2 from the pressure relief position toward the sealing position, and achieving sealing again.

[0115] Specifically, such as Figure 2 As shown, the elastic element 6 is constructed as a spring, as... Figure 4 and Figure 5 As shown, the upper end of the spring can elastically press against the inner wall of the valve cover 12, and the lower end of the spring can elastically press against the upper surface of the seal 21. The spring is sleeved on the outside of the guide 22, so that when the sealing assembly 2 moves upward, it compresses the spring, and the elastic force of the spring increases until it moves to the pressure relief position. Then the spring extends to push the sealing assembly 2 downward to the sealing position.

[0116] In actual design, the elastic element 6 can be first fitted outside the guide 22, and then the valve cover 12 can be connected to the valve body 11, so that the elastic element 6 is compressed so that the elastic force acts on the sealing assembly 2, so that the heterogeneous sealing part and the heterogeneous mating part produce an interference fit sealing effect.

[0117] In some embodiments, the irregularly shaped sealing portion 211 is located on the side of the sealing assembly 2 away from the elastic member 6.

[0118] Specifically, such as Figure 4 and Figure 5 As shown, the irregular sealing part 211 is located on the lower side of the sealing assembly 2, and the elastic member 6 is located on the upper side of the sealing assembly 2. Thus, when in the sealing position, the elastic member 6 can apply a downward elastic force to the sealing assembly 2 so that the irregular sealing part 211 fits tightly against the irregular mating part 211.

[0119] This utility model also proposes a battery pack.

[0120] The battery pack according to the present utility model includes a battery pack housing and an explosion-proof valve 100 as described above. The explosion-proof valve 100 is detachably installed on the battery pack housing, and the air inlet 112 is connected to the interior of the battery pack housing, and the exhaust port 113 is connected to the exterior of the battery pack housing.

[0121] Specifically, the battery pack housing is used to protect the battery module and prevent it from being damaged. The explosion-proof valve 100 is detachably installed on the battery pack housing. That is, the explosion-proof valve 100 and the battery pack can be installed on the battery pack housing through threaded connection, snap-fit ​​connection or other connection methods. This makes it easy to install and replace the explosion-proof valve 100. When the explosion-proof valve 100 is damaged or fails, it can be quickly disassembled for repair and replacement, which is flexible and convenient.

[0122] The air inlet 112 is connected to the inside of the battery pack housing, and the exhaust port 113 is connected to the outside of the battery pack housing. This enables the connection between the inside of the battery pack housing and the external environment. The high-pressure gas inside the battery pack housing can enter the valve body 1 through the air inlet 112 and then be discharged to the external environment through the exhaust port 113, thus achieving the pressure relief effect.

[0123] Specifically, such as Figure 2As shown, the lower end of the valve body 11 is provided with an external thread, and an internally threaded mounting hole can be provided on the battery pack housing. Thus, the lower end of the valve body 11 can extend into the mounting hole to achieve a threaded fit, thereby realizing the threaded connection between the explosion-proof valve 100 and the battery pack housing. A sealing ring 7 can be provided at the connection and mating point between the explosion-proof valve 100 and the battery pack housing. In this way, when the explosion-proof valve 100 is tightened, a pre-tightening force can be provided to the sealing ring 7 to produce a sealing effect at the mating surface between the explosion-proof valve 100 and the battery pack housing, further preventing water from seeping into the interior of the battery pack housing.

[0124] Therefore, by installing the aforementioned explosion-proof valve 100 in the battery pack, the battery pack can operate under stable pressure. When the internal pressure of the battery pack is abnormal, the high-pressure gas inside the battery pack can be released in time to prevent the battery pack from exploding due to excessive internal pressure. This avoids damage to the battery pack shell and internal structure caused by high pressure, thereby effectively protecting the battery pack and extending its service life.

[0125] It can also effectively prevent external moisture from entering the battery pack, avoiding damage to the internal structural components of the battery pack, thereby ensuring the normal operation of the batteries in the battery pack and maintaining battery performance.

[0126] This utility model also proposes a vehicle.

[0127] The vehicle according to an embodiment of the present invention includes the battery pack described above.

[0128] According to the embodiments of the present invention, by setting the above-mentioned battery pack, the vehicle's safety can be improved, the possibility of safety accidents can be reduced, and the harm to occupants can be reduced.

[0129] This utility model also proposes an electrical device.

[0130] The electrical equipment according to the present invention includes the battery pack described in the above embodiments.

[0131] According to the embodiments of this utility model, by setting the above-mentioned battery pack, the normal operation of the electrical equipment can be guaranteed, the safety of the electrical equipment can be improved, and the safety of personnel can be ensured.

[0132] The electrical equipment in this embodiment can be any device with a battery pack, such as ships, aircraft, electric toys, power tools, energy storage devices, or power supply equipment.

[0133] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0134] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An explosion relief valve, characterized in that include: A valve body (1) and a sealing assembly (2), wherein the sealing assembly (2) is movably installed inside the valve body (1), and the valve body (1) is provided with an air inlet (112) and an air outlet (113); The sealing assembly (2) includes a shaped sealing part (211), and the valve body (1) includes a shaped mating part (111). When the sealing assembly (2) is in the sealing position, the shaped sealing part (211) and the shaped mating part (111) form a shaped sealing fit. When the valve body (1) is in the depressurization position, the shaped sealing part (211) and the shaped mating part (111) separate and form a depressurization channel (3). The depressurization channel (3) is connected between the air inlet (112) and the exhaust port (113).

2. The explosion relief valve of claim 1, wherein The sealing assembly (2) and the valve body (1) also form a waterproof and breathable channel (4), which is normally connected between the air inlet (112) and the exhaust port (113).

3. The explosion relief valve of claim 2, wherein, The sealing assembly (2) includes a connected sealing element (21) and a guide element (22), the irregular sealing part (211) is disposed on the sealing element (21), the guide element (22) is guided and slidably engaged with the valve body (1), and the waterproof and breathable channel (4) includes a breathable gap formed between the guide element (22) and the valve body (1).

4. The explosion relief valve of claim 3, wherein, The valve body (1) is provided with a guide sleeve (121), at least a portion of the guide member (22) extends into the guide sleeve (121), the guide member (22) and the guide sleeve (121) are guided and slidably engaged, and the vent gap is formed between the outer wall of the guide member (22) and the inner wall of the guide sleeve (121).

5. The explosion relief valve of claim 4, wherein, The valve body (1) includes a valve body (11) and a valve cover (12). The valve cover (12) is detachably connected to the valve body (11). The guide sleeve (121) is located on the inner side of the valve cover (12). The irregular mating part (111) is located on the inner side of the valve body (11).

6. The explosion relief valve of claim 5, wherein, The air inlet (112) is located at one end of the valve body (11) away from the valve cover (12) and is axially opposite to the sealing assembly (2); And / or, the vent (113) is provided on the valve body (11), and the vent (113) is located radially outside the sealing assembly (2).

7. The explosion relief valve of claim 3, wherein The guide (22) is constructed as a hollow conduit, and the waterproof and breathable channel (4) includes a breathable cavity (42) formed inside the guide (22). The breathable cavity (42) and the breathable gap are sequentially connected between the air inlet (112) and the exhaust hole (113).

8. The explosion relief valve of claim 7, wherein, At least one waterproof and breathable membrane (5) is provided inside the ventilated cavity (42).

9. The explosion relief valve of claim 8, wherein, There are multiple waterproof and breathable membranes (5), and the multiple waterproof and breathable membranes (5) are distributed axially spaced apart in the breathable cavity (42); Alternatively, there may be two waterproof and breathable membranes (5), and the two waterproof and breathable membranes (5) may be located at the two ends of the axial direction of the breathable cavity (42).

10. The explosion relief valve of claim 3, wherein The sealing member (21) is sleeved outside the guide member (22) and axially limitedly matched with the guide member (22).

11. The explosion relief valve of claim 10, wherein, The special-shaped sealing part (211) is located on the side of the sealing member (21) away from the waterproof and breathable channel (4).

12. The explosion relief valve of claim 2, wherein, The minimum flow cross-sectional area of the waterproof and breathable channel (4) is smaller than the minimum flow cross-sectional area of the pressure relief channel (3).

13. The explosion relief valve of claim 1, wherein, One of the special-shaped sealing part (211) and the special-shaped matching part (111) is configured as at least one sealing tooth part and the other is configured as at least one sealing tooth groove, and at least one sealing tooth part and at least one sealing tooth groove are one-to-one sealingly matched.

14. The explosion relief valve of claim 13, wherein, The sealing tooth part is annularly extended and arranged around the air inlet hole (112). And / or, the sealing tooth groove is annularly extended and arranged around the air inlet hole (112).

15. The explosion relief valve of claim 1, wherein, Further comprising an elastic member (6) for applying an elastic force to the sealing assembly (2) to move from the pressure relief position to the sealing position, and the pressure at the air inlet hole (112) is adapted to overcome the elastic force of the elastic member (6) to push the sealing assembly (2) to move from the sealing position to the pressure relief position.

16. The explosion relief valve of claim 15, wherein, The special-shaped sealing part (211) is located on the side of the sealing assembly (2) away from the elastic member (6).

17. A battery pack, characterized by The battery pack comprises a battery pack shell and the explosion-proof valve (100) according to any one of claims 1-16, the explosion-proof valve (100) is detachably installed on the battery pack shell, and the air inlet hole (112) is in communication with the inside of the battery pack shell, and the air outlet hole (113) is in communication with the outside of the battery pack shell.

18. A vehicle characterized by comprising: The battery pack comprises the battery pack according to claim 17.

19. An electrical device, comprising: The battery pack comprises the battery pack according to claim 17.

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