Valves and Electronic Devices

Abstract

A valve and an electronic device are provided. The electronic device includes a housing. The housing is configured to have electronic components therein, and the valve is disposed in the housing. The valve includes a valve body, the valve body having a flow path, the flow path connecting the inside and the outside of the housing to which the valve body is attached, and a bolt body, the bolt body is disposed in the valve body to close the flow path, and the bolt body opens the flow path when the pressure difference between the inside and the outside is greater than a threshold value. In this way, when the pressure difference between the inside and the outside is small, the bolt body can close the flow path so that the water vapor on the outside is prevented from entering the inside. Also, when the pressure difference between the inside and the outside is greater than a threshold value, the bolt body can open the flow path, so that the pressure difference between the inside and the outside can be balanced and the adverse effects caused by an excessively large pressure difference between the inside and the outside can be avoided, and when the pressure difference between the inside and the outside is reduced to less than the threshold value, the bolt body can close the flow path, so that the water vapor on the outside is prevented from entering the inside. Thus, the inside water vapor content is reduced, the possibility of condensation is reduced, and the effects of water vapor and condensation on electronic components are reduced.

Description

[Technical Field]

[0001] TECHNICAL FIELD This application relates to the field of electronic device technology, and in particular to valves and electronic devices. [Background technology]

[0002] As a means of transportation, a vehicle needs to be able to operate normally in multiple complex environments. Since a large number of on-board electronic components are deployed in the vehicle, the on-board electronic components are required to operate normally in different environments to ensure the normal operation of the vehicle. With the continuous development of vehicle technology, the functions of the vehicle are becoming more and more abundant and powerful, and the number of on-board electronic components in the vehicle is also increasing accordingly. Therefore, higher requirements are being imposed on the adaptability of the on-board electronic components.

[0003] For example, in some rainy regions, air humidity is high. When a vehicle is used in seasons with high daytime temperatures, such as spring, autumn, or winter, or in scenarios with drastic short-term temperature changes, such as in tunnels or garages, the absolute humidity of the air inside a module carrying vehicle-mounted electronic components (i.e., the amount of water vapor in each cubic meter of moist air) exceeds the saturation point, causing the water vapor inside the module to condense and form water droplets, resulting in condensation. If the water droplets generated during condensation land on locations such as chip or component pins, wiring solder joints, or signal output solder joints, the pins or solder joints may corrode. As a result, insulation performance and voltage resistance may deteriorate. This ultimately impairs insulation performance or even poses risks such as short circuits and board burnout.

[0004] In addition, in high humidity scenarios, condensation directly causes corrosion or short circuits of onboard electronic components, and humidity also affects the lifespan of onboard electronic components. A higher relative humidity of the environment in which the onboard electronic components are located indicates a shorter expected lifespan of the onboard electronic components. Therefore, by maintaining a low relative humidity of the microenvironment in which the onboard electronic components are located, the lifespan of the onboard electronic components can be effectively extended. Summary of the Invention [Means for solving the problem]

[0005] The present application provides a valve and an electronic device to balance the pressure difference between the inside and outside when the pressure difference between the inside and outside is excessively large, reduce the possibility of condensation, and reduce the effects of water vapor and condensation on electronic components.

[0006] According to a first aspect of the present application, there is provided a valve including: a valve body having a flow path connecting an inside and an outside of a housing to which the valve body is attached; and a bolt body, the bolt body being disposed in the valve body to close the flow path and opening the flow path when a pressure difference between the inside and the outside is greater than a threshold value.

[0007] In this way, under normal circumstances, specifically when the pressure difference between the inside and outside is small, the bolt body can close the flow path to prevent water vapor from the outside from entering the inside. This avoids an increase in the water vapor content inside, reduces the possibility of condensation, and reduces the impact of water vapor and condensation on electronic components. Also, when the pressure difference between the inside and outside is greater than a threshold, the bolt body can open the flow path, thereby balancing the pressure difference between the inside and outside and avoiding the risk of structural breathing fatigue caused by an excessively large pressure difference between the inside and outside.

[0008] In a possible implementation of the first aspect, the bolt body includes a first valve film that deforms to open the flow path when the inner pressure is greater than the outer pressure and the pressure difference is greater than a first pressure difference threshold, and a second valve film that deforms to open the flow path when the outer pressure is greater than the inner pressure and the pressure difference is greater than a second pressure difference threshold.

[0009] In this way, the first valve film can control the flow path to open when a first pressure difference threshold is reached to discharge air to the outside and balance the pressure difference between the inside and the outside, and the second valve film can control the flow path to open when a second pressure difference threshold is reached to draw air in to the inside and balance the pressure difference between the inside and the outside. In this way, air can be discharged and drawn in under different pressure difference thresholds according to requirements, which allows the valve to be applied to more scenarios.

[0010] In a possible implementation of the first aspect, the first pressure difference threshold is greater than the second pressure difference threshold.

[0011] In this way, the valve allows the air inside to escape more easily, thereby reducing the water vapor content inside and reducing the possibility of condensation inside.

[0012] In a possible implementation of the first aspect, the flow path includes a first flow path and a second flow path, and the bolt body includes a first valve film that closes the first flow path and deforms to open the first flow path when the inner pressure is greater than the outer pressure and the pressure difference is greater than a first pressure difference threshold, and a second valve film that closes the second flow path and deforms to open the second flow path when the outer pressure is greater than the inner pressure and the pressure difference is greater than a second pressure difference threshold.

[0013] In this way, the opening and closing of the first and second flow paths can be controlled separately by the first and second valve films to achieve differentiated control of air intake and exhaust, allowing the valve to be applied to more scenarios. Specifically, when the inside pressure is greater than the outside pressure and the pressure difference is greater than a first pressure difference threshold, the first valve film opens the first flow path to exhaust air to the outside. When the outside pressure is greater than the inside pressure and the pressure difference is greater than a second pressure difference threshold, the second valve film opens the second flow path to intake air to the inside.

[0014] In a possible implementation of the first aspect, the bolt body further comprises a separator, the separator dividing the flow path into a first flow path and a second flow path.

[0015] In this way, the flow path can be divided into a first flow path and a second flow path using the isolation portion of the bolt body, which simplifies the structure of the valve body and reduces the production cost of the valve body.

[0016] In a possible implementation of the first aspect, the first valve film comprises a first inclined portion, which presses against the inner surface of the flow path and is configured so that a shorter distance between the first inclined portion and its peripheral side indicates a shorter distance between the first inclined portion and the outside, and the second valve film comprises a second inclined portion, which presses against the inner surface of the flow path and is configured so that a shorter distance between the second inclined portion and its peripheral side indicates a shorter distance between the second inclined portion and the inside.

[0017] Thus, when the internal pressure is greater than the external pressure, the force generated when a pressure difference acts on the first and second valve films acts outward. Because the shorter distance between the first sloped portion and its peripheral side indicates a shorter distance between the first sloped portion and the outside, when a force acting outward drives the first sloped portion to deform, the first sloped portion moves away from the inner surface of the flow path, thereby opening the first flow path. Because the shorter distance between the second sloped portion and its peripheral side indicates a shorter distance between the second sloped portion and the inside, when a force acting outward drives the second sloped portion to deform, the second sloped portion moves toward the inner surface of the flow path, thereby keeping the second flow path closed. On the other hand, when the external pressure is greater than the internal pressure, the force generated when a pressure difference acts on the first and second valve films acts inward. In this way, the second inclined portion is driven to move in a direction away from the inner surface of the flow path, thereby opening the second flow path, and the first inclined portion is driven to move in a direction toward the inner surface of the flow path, thereby keeping the first flow path closed. Therefore, when the outside pressure is greater than the inside pressure, the first valve film is prevented from opening the first flow path, and when the inside pressure is greater than the outside pressure, the second valve film is prevented from opening the second flow path. The first valve film can control the opening of the first flow path only when the inside pressure is greater than the outside pressure to exhaust air and balance the pressure difference between the inside and outside, and the second valve film can control the opening of the second flow path only when the outside pressure is greater than the inside pressure to intake air and balance the pressure difference between the inside and outside.

[0018] In a possible implementation of the first aspect, the first inclined portion and the second inclined portion are linear or arc-shaped in the direction of extension toward the peripheral edge side.

[0019] In one possible implementation of the first aspect, when the first and second inclined portions extend the same distance toward the periphery, the distance between the first inclined portion and the outside is smaller than the distance between the second inclined portion and the inside. Thus, when the outward force acting on the first valve film is the same as the inward force acting on the second valve film, according to the principle of trigonometry, the component of the force of the first inclined portion in the direction of deformation is greater than the component of the force of the second inclined portion in the direction of deformation. Therefore, the first pressure difference threshold is smaller than the second pressure difference threshold. This makes it easier for the valve to expel air, thereby reducing the water vapor content inside and the possibility of condensation inside. It also makes it more difficult for the valve to inhale air, thereby reducing the possibility of water vapor from the outside entering the inside and the possibility of condensation inside.

[0020] In a possible embodiment of the first aspect, the bolt body includes a body portion having a first vent hole and a second vent hole formed therein, the first valve film covering the outside of the first vent hole and the second valve film covering the inside of the second vent hole. In this manner, the first valve film can cover the outside of the first vent hole, thereby opening the first vent hole when the internal pressure is greater than the external pressure and keeping the first vent hole closed when the external pressure is greater than the internal pressure. The second valve film can cover the inside of the second vent hole, thereby opening the second vent hole when the external pressure is greater than the internal pressure and keeping the second vent hole closed when the internal pressure is greater than the external pressure. In this manner, the first valve film can control the flow path to exhaust air, and the second valve film can control the flow path to intake air.

[0021] In a possible embodiment of the first aspect, there are a plurality of first valve films and a plurality of second valve films, wherein the plurality of first valve films contact the first vent hole with an outwardly facing convex shape and are angled to cover the first vent hole, and the plurality of second valve films contact the second vent hole with an inwardly facing convex shape and are angled to cover the second vent hole. In this manner, the plurality of first valve films contact each other to form an outwardly facing convex shape. When the inner pressure is greater than the outer pressure, the plurality of first valve films can be driven to deform in different directions, thereby opening the first vent hole. When the outer pressure is greater than the inner pressure, the plurality of first valve films can be driven to deform in directions toward each other, thereby keeping the first vent hole closed. The plurality of second valve films contact each other to form an inwardly facing convex shape. When the outside pressure is greater than the inside pressure, the second valve films can be actuated to deform in directions apart, thereby opening the second vent, and when the inside pressure is greater than the outside pressure, the second valve films can be actuated to deform toward each other, thereby keeping the second vent closed.

[0022] In a possible implementation of the first aspect, the thickness of the first valve film is smaller than the thickness of the second valve film. Therefore, the force required to drive the deformation of the first valve film may be smaller than the force required to drive the deformation of the second valve film. Therefore, the first pressure difference threshold is smaller than the second pressure difference threshold. It is easier for the valve to expel air, thereby reducing the water vapor content inside and the possibility of condensation inside. It is also more difficult for the valve to inhale air, thereby reducing the possibility of water vapor from the outside entering the inside and the possibility of condensation inside.

[0023] In a possible embodiment of the first aspect, when the first and second valve films close the flow path, the first repulsive force acting on the first valve film is smaller than the second repulsive force acting on the second valve film. Thus, when the first and second valve films close the flow path, a first and second deformation force are generated due to deformation, and then a corresponding first and second repulsive force act on the first and second valve films. To drive the first and second valve films to continue deforming to open the flow path, the first and second deformation forces must be overcome. Therefore, when the first repulsive force is smaller than the second repulsive force, the first pressure difference threshold at which the first valve film opens can be smaller than the second pressure difference threshold at which the second valve film opens. It is easier for the valve to expel air, which reduces the water vapor content inside and reduces the chance of condensation inside. It is harder for the valve to inhale air, which reduces the chance of water vapor outside getting inside and reduces the chance of condensation inside.

[0024] In a possible embodiment of the first aspect, the first or second valve film is made of silica gel, ethylene propylene diene monomer, plastic, or metal. This provides a material suitable for manufacturing the first and second valve films, allowing them to deform when the pressure difference between the inside and outside is within a corresponding threshold. This allows the flow path to be opened and the air pressures inside and outside to be balanced.

[0025] In a possible implementation of the first aspect, the first pressure difference threshold and the second pressure difference threshold are greater than 10 Pa. In this way, a range of the first pressure difference threshold and a range of the second pressure difference threshold are provided, which can prevent the requirements for the pressure difference between the inside and the outside and the water vapor content from being unable to be met due to an excessively small pressure difference between the inside and the outside.

[0026] In a possible implementation of the first aspect, the valve further comprises a sealing ring sleeved on the outside of the valve body, and a connecting part connecting the sealing ring and the bolt body, the connecting part having a notch disposed in the side wall of the flow passage for the connecting part to pass through. In this way, the location where the outer part of the valve body is connected to the housing can be sealed using the sealing ring, thereby improving the sealing performance of the housing and preventing the intrusion of water vapor.

[0027] In a possible embodiment of the first aspect, the valve further includes a waterproof gas-permeable membrane disposed on the flow path. The arrangement of the waterproof gas-permeable membrane can ensure the ingress and egress of gas and prevent liquid water from the outside from penetrating the flow path and affecting the internal electronic components. The arrangement of the bolt body can enhance the functionality of the waterproof gas-permeable membrane and reduce water vapor from gas penetrating the inside through the waterproof gas-permeable membrane, improving the waterproof effect.

[0028] According to a second aspect of the present application, an electronic device is provided. The electronic device includes a housing configured to accommodate electronic components therein, and a valve disposed in the housing, the valve being any of the possible embodiments of the valve described in the first aspect of the present application. In this manner, the bolt body can close the flow path, thereby preventing water vapor outside the housing from entering the inside of the housing. This reduces the water vapor content inside the housing, reducing the possibility of condensation and the effects of water vapor and condensation on the electronic components. Furthermore, when the pressure difference between the inside and outside of the housing is greater than a threshold, the bolt body can open the flow path, thereby balancing the pressure difference between the inside and outside of the housing and avoiding adverse effects caused by an excessively large pressure difference between the inside and outside.

[0029] According to a third aspect of the present application, there is provided a vehicle, the vehicle including the electronic device of the second aspect of the present application.

[0030] These and other aspects of the present application will become clearer and more easily understood in the description of the embodiment(s) that follows.

[0031] The features and relationships between features of the present application will be further described below with reference to the accompanying drawings. All of the accompanying drawings are examples, and some features are not drawn to scale. In addition, some of the accompanying drawings may omit common features that are not essential to the field of the present application. Alternatively, additional features that are not essential to the application are shown. The combinations of features shown in the accompanying drawings are not intended to limit the present application. In addition, the same reference numerals refer to the same content in this specification. Specific accompanying drawings are described as follows: [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a schematic diagram of a usage scenario of a vent valve according to an embodiment of the present application; [Figure 2] 1 is a schematic structural diagram of a vehicle-mounted controller according to an embodiment of the present application; [Figure 3] 3 is a schematic structural diagram of the connection between the vent valve and the housing in FIG. 2. FIG. [Figure 4] FIG. 3 is a schematic structural diagram of the vent valve of FIG. 2. [Figure 5] FIG. 3 is a schematic exploded view of the vent valve of FIG. 2. [Figure 6] 3 is a schematic orthographic view of the bottom of the vent valve of FIG. 2. [Figure 7] 7 is a cross-sectional view of the vent valve of FIG. 6 taken along the line AA. [Figure 8] FIG. 5 is a schematic structural diagram of the valve body of FIG. 4. [Figure 9] FIG. 1 is an orthographic view of the bottom of the valve body. [Figure 10] FIG. 2 is a schematic axial structural view of a bolt body and a seal ring according to an embodiment of the present application. [Figure 11]FIG. 10 is another axial schematic structural view of a bolt body and a seal ring according to an embodiment of the present application. [Figure 12] 8 is a cross-sectional view of the bolt body and the valve body of FIG. 7 taken along the BB direction. [Figure 13] 8 is a cross-sectional view of the bolt body and the valve body in FIG. 7 taken along the CC direction. [Figure 14] FIG. 8 is a partial enlarged view of the position of the bolt body in FIG. 7. [Figure 15] FIG. 10 is another schematic axial structural view of a bolt body and a seal ring according to an embodiment of the present application. [Figure 16] FIG. 16 is a top view of the bolt body and seal ring of FIG. 15. [Figure 17] FIG. 17 is a schematic cross-sectional view of the bolt body and the seal ring in FIG. 16 taken in the DD direction. [Figure 18] FIG. 10 is another top view of a bolt body and a seal ring according to an embodiment of the present application. [Figure 19] 19 is a schematic cross-sectional view of the bolt body and the seal ring of FIG. 18 taken in the EE direction. [Figure 20] FIG. 10 is another schematic structural diagram of the connection between the vent valve and the housing. [Figure 21] FIG. 21 is a schematic structural diagram of the bolt body of FIG. 20. DETAILED DESCRIPTION OF THE INVENTION

[0033] In this specification and claims, the terms "first, second, third, etc." or similar terms such as module A, module B, and module C are used merely to distinguish between similar objects and do not represent a particular order of the objects. It will be understood that the specific order or sequence may be interchanged where permissible, such that the embodiments of the present application described herein may be implemented in an order other than that illustrated or described herein.

[0034] The term "comprising" as used in this specification and claims should not be construed as being limited to the contents listed below and does not exclude other elements or steps. Instead, the term "comprising" should be interpreted as specifying the presence of a referenced feature, whole, step, or portion, but not excluding the presence or addition of one or more other features, wholes, steps, or portions and groups thereof. Thus, the phrase "a device comprising apparatus A and apparatus B" should not be limited to a device that includes only components A and B.

[0035] References herein to "one embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described with reference to the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the terms "in one embodiment" or "in an embodiment" herein do not necessarily refer to the same embodiment, but may refer to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner, as would be apparent to one of ordinary skill in the art from this disclosure.

[0036] To control humidity and prevent condensation from affecting electronic components, one solution is to place electronic components in a sealed housing to improve the airtightness of the electronic components. However, if the housing is completely sealed, a pressure difference will occur between the inside and outside of the housing, putting the housing at risk of fatigue due to structural breathing (expansion of the structure when the internal pressure is too high, or compression of the structure when the internal pressure is too low). Therefore, a vent valve must be placed on the housing to balance the pressure difference between the inside and outside of the housing. However, because the vent valve cannot prevent water vapor from entering, condensation may still occur inside the housing in severe scenarios.

[0037] Embodiments of the present application provide a vent valve to reduce water vapor entering the housing, thereby reducing the likelihood of condensation within the housing.

[0038] FIG. 1 is a schematic diagram of a usage scenario of a vent valve 50 according to an embodiment of the present application. As shown in FIG. 1, electronic devices such as a battery pack 10, a motor 20, a headlight 30, and an on-vehicle controller 40 are disposed in a vehicle 1. The on-vehicle controller 40 may be a mobile data center (MDC), a vehicle control unit (VCU), a cockpit domain controller (CDC), or the like. The MDC functions as an intelligent driving controller. To ensure that the vehicle 1 can operate normally in multiple complex environments, these electronic devices are usually disposed in a sealed housing 410. A vent valve 50 is disposed in the housing 410. The vent valve 50 may be closed when the pressure difference between the inside and outside of the housing 410 is within a predetermined value, or may be opened when the pressure difference between the inside and outside of the housing 410 exceeds a predetermined value so that the pressure difference between the inside and outside is balanced. Thus, the ingress of water vapor into the housing 410 is reduced, the water vapor content within the housing 410 is reduced, and the likelihood of condensation within the housing 410 is reduced.

[0039] In this embodiment of the present application, an example in which the vehicle 1 is a vehicle is used for explanation. This should not be considered a limitation on the embodiment of the present application. The vehicle 1 may be a conventional fuel vehicle or a new energy vehicle, for example, a pure electric vehicle or a hybrid vehicle. The vehicle 1 may be any one of different types of vehicles, such as a passenger car, a truck, a passenger bus, and an SUV (sport utility vehicle). The vehicle 1 may also be another form of transportation, for example, a ship or an airplane. Alternatively, the ventilation valve 50 in the embodiment of the present application is not limited to being disposed in the vehicle 1, and may further be disposed in another device that needs to reduce water vapor content and has anti-condensation requirements.

[0040] FIG. 2 is a schematic structural diagram of a vehicle-mounted controller 40 according to an embodiment of the present application. FIG. 3 is a schematic structural diagram of the connection between the vent valve 50 and a housing 410 in FIG. 2. The vehicle-mounted controller 40 is used as an example to illustrate a specific method of attaching the vent valve 50 to an electronic device. As shown in FIGS. 2 and 3, the vehicle-mounted controller 40 includes a sealed housing 410. The housing 410 can protect electronic components inside the housing 410 so that the electronic components are isolated from the air outside the housing 410. "Sealed" here means that parts other than the vent valve 50 are sealed. A mounting hole 411 is disposed in the housing 410 and configured to install the vent valve 50. The pressure difference between the inside and outside of the housing 410 can be balanced using the vent valve 50. The specific connection between the vent valve 50 and the mounting hole 411 may be a clamp connection as shown in FIG. 3, or may be a screw connection, welding, an interference fit, or the like. This is not limited here.

[0041] FIG. 4 is a schematic structural diagram of the axial side of the vent valve 50 of FIG. 2. FIG. 5 is a schematic exploded structural diagram of the vent valve 50 of FIG. 2. FIG. 6 is a schematic orthographic view of the bottom (the side entering the housing 410) of the vent valve 50 of FIG. 2. FIG. 7 is a cross-sectional view of the vent valve 50 of FIG. 6 taken along the line AA. As shown in FIGS. 4, 5, 6, and 7, the vent valve 50 includes a valve body 510, a waterproof gas-permeable membrane 520, a protective cover 530, a seal ring 540, and a bolt body 550. The valve body 510 has a flow passage 511 connecting the inside and outside of the housing 410. The bolt body 550 is disposed in the valve body 510 to close the flow passage 511. When the pressure difference between the inside and outside is greater than a predetermined threshold, the bolt body 550 opens the flow passage 511. In this way, when the pressure difference between the inside and outside is small, the bolt body 550 can close the flow passage 511 to prevent outside air and water vapor from entering the inside. When the pressure difference between the inside and outside is large, the bolt body 550 can open the flow passage 511 to balance the pressure difference between the inside and outside. After the pressure difference between the inside and outside is reduced, the flow passage 511 is closed again to reduce the water vapor entering the inside. Therefore, the water vapor content in the housing 410 can be reduced, thereby reducing the possibility of condensation inside the housing 410.

[0042] FIG. 8 is a schematic structural diagram of the valve body 510 of FIG. 4. FIG. 9 is an orthographic view of the bottom of the valve body 510. As shown in FIGS. 4, 5, 8, and 9, the valve body 510 includes a first mounting end 512 and a second mounting end 513 arranged coaxially and cylindrically. A flow passage 511 is disposed axially through the valve body 510 and has openings on both the inside and outside. A protruding clamp connector 514 is disposed circumferentially at the end of the first mounting end 512. A notch 515 is disposed axially in the first mounting end 512. There may be multiple notches 515, and the notches 515 may radially penetrate the side wall of the flow passage 511. For example, as shown in FIG. 9, there may be four notches 515, dividing the first mounting end 512 into four separate sections.

[0043] When the first mounting end 512 is inserted into the mounting hole 411 of the housing 410, the clamp connector 514 may be pressed into the mounting hole 411 and then deformed toward the axis so that the first mounting end 512 can enter the mounting hole 411. When the clamp connector 514 passes through the mounting hole 411, the clamp connector 514 returns to its original shape after it stops being pressed against the housing 410, thereby allowing the valve body 510 to be clamped to the housing 410.

[0044] Connector 516 is disposed on the end face of second mounting end 513 and configured to be fixedly connected to protective cover 530, thereby allowing valve body 510 to be protected using protective cover 530. A gap is formed between protective cover 530 and the end face of second mounting end 513, thereby connecting flow path 511 of second mounting end 513 to the outside. The fixed connection between connector 516 and protective cover 530 may be by clamping, pasting, fastening, or the like, but this is not limited thereto.

[0045] Two portions having different diameters are arranged in the flow channel 511 along the axial direction, and the portion of the flow channel 511 with the larger diameter is disposed at a corresponding position on the second mounting end 513, so that the flow channel 511 forms a mounting platform 517 on the second mounting end 513. The mounting platform 517 is configured to mount a waterproof, gas-permeable membrane 520, which has characteristics that prevent the passage of liquids and ensure the passage of gases. The arrangement of the waterproof, gas-permeable membrane 520 on the mounting platform 517 can prevent liquid water formed by condensation or other reasons from entering the housing 410 from the outside through the flow channel 511 and can ensure that air passes through the flow channel 511 so that the pressure difference between the inside and outside of the housing 410 is balanced.

[0046] FIG. 10 is a schematic axial structural view of a bolt body 550 and a seal ring 540 according to an embodiment of the present application. FIG. 11 is another schematic axial structural view of a bolt body 550 and a seal ring 540 according to an embodiment of the present application. As shown in FIGS. 5 , 7 , 10 , and 11 , the bolt body 550 and the seal ring 540 may be integrally formed and connected to each other using a connecting portion 560. After the bolt body 550 and the seal ring 540 are attached to the valve body 510, the bolt body 550 is disposed inside the flow passage 511 to close the flow passage 511. The seal ring 540 is disposed outside the first mounting end 512. After the clamp connector 514 enters the mounting hole 411 of the housing 410 to establish a clamp connection, the seal ring 540 can be disposed in the space between the first mounting end 512 and the mounting hole 411 to seal the connection between the valve body 510 and the housing 410. The connecting portion 560 is positioned corresponding to the notch 515 of the first mounting end 512. In this manner, the connecting portion 560 can pass through the notch 515, thereby allowing the integrally formed bolt body 550 and seal ring 540 to be successfully attached to the valve body 510.

[0047] As shown in FIGS. 10 and 11 , the connecting portion 560 may be Y-shaped, i.e., have three branches. The three branches are radially arranged at 120° angles and connected at the center of the sealing ring 540. The bolt body 550 includes a first valve film 551 and a second valve film 552. The first valve film 551 and the second valve film 552 may be made of silica gel, ethylene propylene diene monomer, plastic, or metal, respectively. The first valve film 551 and the second valve film 552 may be sector-shaped components as shown in FIGS. 10 and 11 , or may be elastic components of other shapes or forms. The first valve film 551 is considered to be a sector of 120° in the axial direction and is disposed on the inward-facing side of the connecting portion 560. The second valve film 552 is a sector of 240° and is disposed on the outward-facing side of the connecting portion 560. The first valve film 551 and the second valve film 552 are complementary to each other and form a full 360° circle in the axial direction of the bolt body 550 .

[0048] 12 is a cross-sectional view of the bolt body 550 and the valve body 510 in FIG. 7 taken along the line BB. FIG. 13 is a cross-sectional view of the bolt body 550 and the valve body 510 in FIG. 7 taken along the line CC. As shown in FIGS. 10, 11, 12, and 13, isolation portions 553 are disposed between the edges of the first valve film 551 and the second valve film 552 and the connecting portion 560, and the first valve film 551 and the second valve film 552 are connected to the connecting portion 560 using the isolation portions 553. The peripheral sides (sides facing the inner surface of the flow path 511, away from the axis of the flow path 511) of the first valve film 551 and the second valve film 552 press against the inner surface of the flow path 511. The isolation portions 553 divide the flow path 511 into a first flow path 511a and a second flow path 511b. The first valve film 551 closes the first flow passage 511 a, and the second valve film 552 closes the second flow passage 511 b. In this way, the bolt body 550 can close the flow passage 511.

[0049] 14 is a partially enlarged view of the position of the bolt body 550 in FIG. 7. As shown in FIGS. 10, 11, and 14, the peripheral side of the first valve film 551 has a first inclined portion 551a, which presses against the inner surface of the flow passage 511, and the first inclined portion 551a is set to have an outwardly inclined shape, that is, the shorter the distance between the first inclined portion 551a and the peripheral side of the first inclined portion 551a, the shorter the distance between the first inclined portion 551a and the outside. The peripheral side of the second valve film 552 includes a second inclined portion 552a, which presses against the inner surface of the flow channel 511. The second inclined portion 552a is configured to slope inward, i.e., the shorter the distance between the second inclined portion 552a and the peripheral side of the second inclined portion 552a, the shorter the distance between the second inclined portion 552a and the inner side. In an axial cross-sectional view of the first inclined portion 551a and the second inclined portion 552a, the direction in which the first inclined portion 551a and the second inclined portion 552a extend on the peripheral side may be linear as shown in FIG. 14 or arcuate. This is not limiting. In this manner, the first valve film 551 and the second valve film 552 are connected to the isolation portion 553 to form a bowl-shaped structure having an opening facing outward and a bowl-shaped structure having an opening facing inward.

[0050] Therefore, as shown in FIG. 14(a), the pressure P 内 is the pressure P outside the housing 410 外 When the pressure difference ΔP between the inside and the outside acts on the first valve film 551 and the second valve film 552, the outward force F 外 Since the first inclined portion 551a is inclined outward, when the pressure difference ΔP between the inside and the outside is sufficiently large, that is, when the force F 外 When is sufficiently large, a force F 外 A component force F perpendicular to the first inclined portion 551a is obtained by applying 外1drives the first inclined portion 551a to deform in a direction approaching the axis, which can create a gap between the first inclined portion 551a and the inner surface of the flow path 511, opening the first flow path 511a and discharging air from the inside to the outside of the housing 410. Since the second inclined portion 552a is inclined inward, a force F is applied to the second inclined portion 552a. 外 A component force F perpendicular to the second inclined portion 552a is obtained by applying 外2 drives the second inclined portion 552a to deform away from the axis, causing the second inclined portion 552a to press more closely against the inner surface of the flow path 511, and the second flow path 511b remains closed.

[0051] Similarly, as shown in FIG. 14(b), the pressure P 外 is the pressure P inside the housing 410 内 When the pressure difference ΔP between the outside and the inside acts on the first valve film 551 and the second valve film 552, an inward force F 内 Since the second inclined portion 552a is inclined inward, when the pressure difference ΔP between the outside and the inside is sufficiently large, that is, when the force F 内 When is sufficiently large, a force F is applied to the second inclined portion 552a. 内 A component force F perpendicular to the second inclined portion 552a is obtained by applying 内2 drives the second inclined portion 552a to deform in a direction approaching the axis, which can create a gap between the second inclined portion 552a and the inner surface of the flow path 511, opening the second flow path 511b and allowing air to be drawn into the housing 410 from the outside of the housing 410. Since the first inclined portion 551a is inclined inward, a force F is applied to the first inclined portion 551a. 内 A component force F perpendicular to the first inclined portion 551a is obtained by applying 内1 drives the first inclined portion 551a to deform in a direction away from the axis, causing the first inclined portion 551a to press more closely against the inner surface of the flow path 511, so that the first flow path 511a remains closed.

[0052] The pressure P inside the housing 410 内 to the pressure P outside the housing 410 外 The value obtained by subtracting 排出 When the pressure P outside the housing 410 is greater than 1000 W, the air is discharged from inside the housing 410 to the outside of the housing 410. 外 The pressure P inside the housing 410 内 The value obtained by subtracting 吸入 14, the thickness of the first valve film 551 is smaller than the thickness of the second valve film 552. Therefore, under the same conditions, the force F required to drive the first valve film 551 to deform to open the first flow passage 511a is 外 is the force F required to drive the second valve film 552 to deform to open the second flow passage 511b. 内 In this way, the first pressure difference threshold ΔP that must be exceeded when expelling air is 排出 is a second pressure difference threshold ΔP that must be exceeded during air intake. 吸入 This allows air to be expelled more easily and less likely to be inhaled, reducing the possibility of water vapor entering the interior through the flow passage 511.

[0053] Similarly, as shown in FIG. 14 , the first valve film 551 and the second valve film 552 are attached to the flow passage 511 in a deformed state. Specifically, due to the large size of the first valve film 551 and the second valve film 552, the first inclined portion 551a and the second inclined portion 552a press against the inner surface of the flow passage 511, causing deformation when the first flow passage 511a and the second flow passage 511b are closed. In this manner, the first inclined portion 551a and the second inclined portion 552a generate a deformation force, which acts on the inner surface of the flow passage 511, causing the first inclined portion 551a and the second inclined portion 552a to receive equal but opposite repulsive forces. The deformation force interacts with the repulsive force, causing the first inclined portion 551a and the second inclined portion 552a to be tightly connected to the inner surface of the flow passage 511 to ensure sealing performance. The first deformation amount generated when the first valve film 551 closes the first flow path 511a is smaller than the second deformation amount generated when the second valve film 552 closes the second flow path 511b. A larger deformation amount indicates a correspondingly larger deformation force. Therefore, the first deformation force generated due to the deformation of the first valve film 551 is smaller than the second deformation force generated due to the deformation of the second valve film 552. Therefore, the first repulsive force acting on the first valve film 551 is smaller than the second repulsive force acting on the second valve film 552.

[0054] 14, the first and second deformation forces drive the first and second inclined portions 551a and 552a to move in a direction away from the axis. Specifically, the direction of the first deformation force is a component force F that drives the opening of the first flow channel 511a. 外1 The direction of the second deformation force is opposite to the direction of the component force F that drives the opening of the second flow path 511b. 内2 Therefore, the deformation force is the force F required to drive the deformation of the first valve film 551. 排出 and the force F required to drive the deformation of the second valve film 552 吸入Since the first deformation amount is smaller than the second deformation amount, under the same conditions, the force F required to drive the deformation of the first valve film 551 is 排出 is the force F required to drive the deformation of the second valve film 552 吸入 In this way, the first pressure difference threshold ΔP that must be exceeded when expelling air is 排出 is a second pressure difference threshold ΔP that must be exceeded during air intake. 吸入 This allows air to be expelled more easily and less likely to be inhaled, reducing the possibility of water vapor entering the interior through the flow passage 511.

[0055] Similarly, as shown in FIG. 14, when the first inclined portion 551a and the second inclined portion 552a extend the same distance toward the periphery, the distance between the first inclined portion 551a and the outside is smaller than the distance between the second inclined portion 552a and the inside. Specifically, the angle α at which the first inclined portion 551a inclines toward the outside is smaller than the angle β at which the second inclined portion 552a inclines toward the inside. Therefore, according to the principle of trigonometric functions, it can be seen that cosα>cosβ. F 外1 =F 外 cosα and F 内2 =F 内 cos β, that is, under the same pressure difference, the force F acting on the first valve film 551 is 外 The force F acting on the second valve film 552 内 When the force component F in the deformation direction of the first inclined portion 551a is equal to 外1 is the component force F in the deformation direction of the second inclined portion 552a. 内2 Therefore, under the same conditions, the force F required to drive the deformation of the first valve film 551 is 排出 is the force F required to drive the deformation of the second valve film 552 吸入 In this way, the first pressure difference threshold ΔP that must be exceeded when expelling air is 排出 is a second pressure difference threshold ΔP that must be exceeded during air intake. 吸入This allows air to be expelled more easily and less likely to be inhaled, reducing the possibility of water vapor entering the interior through the flow passage 511.

[0056] In conclusion, the first valve film 551 defines a first pressure differential threshold ΔP that must be exceeded before the vent valve 50 will expel air. 排出 , and the second valve film 552 may be used to control a second pressure differential threshold ΔP that must be exceeded when the vent valve 50 is to draw in air. 吸入 Therefore, the operating principle of the vent valve 50 in this embodiment of the present application is as follows.

[0057] P 内 >P 外 KatsP 内 -P 外 >ΔP 排出 At this time, the first inclined portion 551a is deformed, the first flow path 511a is opened, and the air inside the vent valve 50 is discharged through the first flow path 511a to the outside of the vent valve 50. In this way, the pressure difference between the inside and outside of the vent valve 50 can be balanced and some of the water vapor inside can be discharged, thereby preventing the water vapor on the outside from entering the inside of the vent valve 50, reducing the concentration of water vapor inside, and reducing the possibility of condensation inside.

[0058] P 外 >P 内 KatsP 外 -P 内 >ΔP 吸入 When the second inclined portion 552a is deformed, the second flow path 511b is opened, and the air outside the vent valve 50 is drawn into the inside of the vent valve 50 through the second flow path 511b. In this way, the pressure difference between the inside and outside of the vent valve 50 can be balanced to avoid damage to the housing 410 caused by an excessively large pressure difference. Also, when the pressure difference between the inside and outside is equal to or greater than the second pressure difference threshold ΔP 吸入5, the second inclined portion 552a can be restored to its original shape under the action of a deformation force, thereby closing the second flow path 511b again, thereby preventing more water vapor from entering the inside of the vent valve 50 and avoiding an increase in the concentration of water vapor inside the vent valve 50.

[0059] P 内 =P 外 When P 内 >P 外 KatsP 内 -P 外 ≦ΔP 排出 When or P 外 >P 内 KatsP 外 -P 内 ≦ΔP 吸入 At this time, first inclined portion 551a and second inclined portion 552a remain stationary, and first flow path 511a and second flow path 511b remain closed. In this way, water vapor can be prevented from entering the inside of vent valve 50, and an increase in the concentration of water vapor inside vent valve 50 can be avoided.

[0060] Furthermore, based on the requirements of the vehicle-mounted controller 40, when the vehicle-mounted controller 40 is, for example, an MDC, the first pressure difference threshold ΔP 排出 and a second pressure difference threshold ΔP 吸入 may be set to be greater than 10 Pa. In this way, it can be avoided that the MDC requirements for the pressure difference between the inside and the outside and the water vapor content cannot be met due to an excessively small pressure difference between the inside and the outside.

[0061] Furthermore, the vent valve in this embodiment of the present application may be disposed in an electronic device such as the battery pack 10, the motor 20, the headlight 30, and the vehicle-mounted controller 40, and is configured to allow air to be easily discharged and not easily inhaled when the air pressure difference between the inside and outside is balanced, thereby reducing the water vapor content. The vent valve may also be disposed in another device and is configured to balance the hydraulic pressure difference, for example, water or oil pressure, that occurs between the inside and outside. Also, when the hydraulic pressure difference between the inside and outside is balanced, it can allow liquid to be easily discharged and not easily inhaled, thereby reducing harmful substances that enter the inside and reducing the harmful substance content inside.

[0062] FIG. 15 is another schematic axial structural view of a bolt body 550 and a seal ring 540 according to an embodiment of the present application. FIG. 16 is a top view of the bolt body 550 and the seal ring 540 of FIG. 15. FIG. 17 is a schematic cross-sectional view of the bolt body 550 and the seal ring 540 of FIG. 16 in the DD direction. As shown in FIGS. 15, 16, and 17, an embodiment of the present application further provides another possible structural form of the bolt body 550 and the seal ring 540. The difference between the bolt body 550 of FIGS. 15, 16, and 17 and the bolt body 550 of FIGS. 10 and 11 is that the bolt body 550 includes a main body portion 554. The main body portion 554 is disposed at a central position of the seal ring 540 and is fixedly connected to the seal ring 540 using a connecting portion 560. After the bolt body 550 and the valve body 510 are attached, the body portion 554 is disposed in the flow passage 511, dividing the flow passage 511 into two portions, an outer portion and an inner portion, separated along the axial direction. A first vent hole 555 and a second vent hole 556 are disposed in the body portion 554. The cross-sectional shapes of the first vent hole 555 and the second vent hole 556 may be rectangular as shown in FIGS. 15, 16, and 17, or may be circular or another shape. The first valve film 551 is disposed to cover the outer opening of the first vent hole 555. A portion of the first valve film 551 is fixedly connected to a portion of the edge of the outer opening of the first vent hole 555, and the other portions press against each other. The second valve film 552 is disposed to cover the inner opening of the second vent hole 556. A portion of the second valve film 552 is fixedly connected to a portion of the edge of the inner opening of the second vent hole 556, and other portions press against each other.

[0063] In this way, the pressure P inside the housing 410 内 is the pressure P outside the housing 410 外 and the pressure difference is greater than the first pressure difference threshold ΔP 排出When the pressure P inside the housing 410 is greater than 0.05, the first valve film 551 and the second valve film 552 deform outward under the pressure, creating a gap where the first valve film 551 presses against the first vent hole 555. In this way, the first flow path 511a is opened, allowing the air inside to escape to the outside through the first flow path 511a. Also, the second valve film 552 presses more closely against the second vent hole 556. In this way, the second flow path 511b remains closed. When the pressure P inside the housing 410 is greater than 0.05, the first valve film 551 and the second valve film 552 deform outward under the pressure, creating a gap where the first valve film 551 presses against the first vent hole 555. In this way, the first flow path 511a is opened, allowing the air inside to escape to the outside through the first flow path 511a. In addition, the second valve film 552 presses more closely against the second vent hole 556. In this way, the second flow path 511b remains closed. 外 is the pressure P outside the housing 410 内 and the pressure difference is greater than the second pressure difference threshold ΔP 吸入 When the pressure is greater than 0.05, the first valve film 551 and the second valve film 552 deform inward under the pressure, causing the first valve film 551 to press more closely against the first vent hole 555. In this way, the first flow path 511a remains closed. Also, a gap is created where the second valve film 552 presses against the second vent hole 556. In this way, the second flow path 511b is opened, allowing outside air to be drawn inward through the second flow path 511b.

[0064] 15, 16, and 17, the outer opening of the first vent hole 555 and the inner opening of the second vent hole 556 are convex, which reduces the contact area between the first valve film 551 and the first vent hole 555 and the contact area between the second valve film 552 and the second vent hole 556. In this way, the pressure generated when the first valve film 551 presses against the second valve film 552 and the pressure generated when the first vent hole 555 presses against the second vent hole 556 can be increased, and the sealing performance can be improved when the first flow path 511 a and the second flow path 511 b are closed.

[0065] 17, the thickness of the first valve film 551 is less than the thickness of the second valve film 552. In this way, the first pressure difference threshold ΔP that must be exceeded by the pressure difference during air evacuation is 排出is a second pressure difference threshold ΔP that must be exceeded by the pressure difference during air intake. 吸入 This allows air to be expelled more easily and less likely to be inhaled, reducing the possibility of water vapor entering the interior through the flow passage 511.

[0066] As shown in FIG. 17 , the convex portions of the outer opening of the first vent hole 555 and the inner opening of the second vent hole 556 are arranged horizontally in the radial direction of the flow path 511, and the first valve film 551 and the second valve film 552 are deformed and attached to the first vent hole 555 and the second vent hole 556. The first valve film 551 is fixedly connected to the first vent hole 555 at an angle γ. In this manner, the first valve film 551 undergoes a first deformation and presses against the edge of the outer opening of the first vent hole 555. The first deformation force drives the first valve film 551 to move toward the first vent hole 555, thereby generating a first repulsive force. The first deformation force interacts with the first repulsive force, causing the first valve film 551 to seal the first vent hole 555. The second valve film 552 is fixedly connected to the second vent hole 556 at an angle δ. In this manner, the second valve film 552 undergoes a second deformation and presses against the edge of the inner opening of the second vent hole 556, and the second deformation force generated by the second deformation drives the second valve film 552 to move toward the second vent hole 556, thereby generating a second repulsive force. The second deformation force interacts with the second repulsive force, causing the second valve film 552 to seal the second vent hole 556.

[0067] As shown in FIG. 17, γ<δ. Therefore, the first deformation amount is smaller than the second deformation amount. In other words, the first deformation force and the first repulsion force are smaller than the second deformation force and the second repulsion force. In this way, the first pressure difference threshold ΔP that must be exceeded when discharging air is 排出 is a second pressure difference threshold ΔP that must be exceeded during air intake. 吸入This allows air to be expelled more easily and less likely to be inhaled, reducing the possibility of water vapor entering the interior through the flow passage 511.

[0068] Furthermore, the radial cross-sectional area of ​​the first vent hole 555 may be set to be larger than the radial cross-sectional area of ​​the second vent hole 556, and correspondingly, the area of ​​the first valve film 551 is set to be larger than the area of ​​the second valve film 552, such that the portion of the first valve film 551 pressing against the first vent hole 555 is larger than the portion of the second valve film 552 pressing against the second vent hole 556. Therefore, the force required to drive the first valve film 551 to deform to open the first flow path 511a is smaller than the force required to drive the second valve film 552 to deform to open the second flow path 511b. In this way, the first pressure difference threshold ΔP that needs to be exceeded when air is discharged is 排出 is a second pressure difference threshold ΔP that must be exceeded during air intake. 吸入 This allows air to be expelled more easily and less likely to be inhaled, reducing the possibility of water vapor entering the interior through the flow passage 511.

[0069] FIG. 18 is another top view of a bolt body 550 and a seal ring 540 according to an embodiment of the present application. FIG. 19 is a schematic cross-sectional view of the bolt body 550 and the seal ring 540 of FIG. 18 in the E-E direction. As shown in FIGS. 18 and 19, an embodiment of the present application further provides another possible structural form of the bolt body 550 and the seal ring 540. The difference between the bolt body 550 of FIGS. 18 and 19 and the bolt body 550 of FIGS. 15, 16, and 17 is that the first vent hole 555 and the second vent hole 556 are circular through holes. Four first valve films 551 are arranged outside the first vent hole 555 and around the opening of the first vent hole 555. The four first valve films 551 are arranged with an outward tilt, and each first valve film 551 contacts an adjacent first valve film 551 to form a cone-shaped convex structure. The four second valve films 552 are arranged inside the second vent hole 556, around the opening of the second vent hole 556. The four second valve films 552 are arranged with an inward tilt, and each second valve film 552 contacts an adjacent second valve film 552 to form a cone-shaped convex structure.

[0070] In this way, the pressure P inside the housing 410 内 is the pressure P outside the housing 410 外 and the pressure difference is greater than the first pressure difference threshold ΔP 排出 When the pressure difference P inside the housing 410 is greater than 0.05, the force generated when the pressure difference acts on the first valve film 551 drives the first valve film 551 to deform in different directions, thereby creating gaps between the first valve films 551. In this way, the first flow passage 511a is opened, allowing the air inside to be discharged to the outside through the first flow passage 511a. Also, when the pressure difference acts on the second valve film 552, the force generated drives the second valve films 552 to deform in directions toward each other, thereby bringing the second valve films 552 into closer contact with each other. In this way, the second flow passage 511b remains closed. When the pressure P inside the housing 410 is greater than 0.05, the force generated when the pressure difference acts on the first valve film 551 drives the first valve film 551 to deform in different directions, thereby creating gaps between the first valve films 551. In this way, the first flow passage 511a is opened, allowing the air inside to be discharged to the outside through the first flow passage 511a. In addition, when the pressure difference acts on the second valve film 552, the force generated drives the second valve films 552 to deform in directions toward each other, thereby bringing the second valve films 552 into closer contact with each other. In this way, the second flow passage 511b remains closed. 外 is the pressure P outside the housing 410 内and the pressure difference is greater than the second pressure difference threshold ΔP 吸入 When the pressure difference is greater than 0.05, the force generated when the pressure difference acts on the second valve film 552 drives the second valve film 552 to deform in different directions, thereby creating gaps between the second valve films 552. In this way, the second flow passage 511b is opened, allowing outside air to be drawn in through the second flow passage 511b. Also, the force generated when the pressure difference acts on the first valve film 551 drives the first valve films 551 to deform in directions toward each other, thereby bringing the first valve films 551 into closer contact with each other. In this way, the first flow passage 511a remains closed.

[0071] 20 is another schematic structural diagram of the connection between the vent valve 50 and the housing 410. As shown in FIG. 20, the embodiment of the present application further provides another mounting form of the bolt body 550. Compared with FIG. 3, the bolt body 550 and the sealing ring 540 may alternatively be two separate components. After the clamping connection between the valve body 510 and the mounting hole 411 of the housing 410 is performed, the valve body 510 is firmly fixed inside the mounting hole 411 using a fastener 570.

[0072] FIG. 21 is a schematic structural diagram of the bolt body 550 of FIG. 20. As shown in FIG. 21, the valve body 510 is a disk-shaped, one-piece unit and includes a main body portion 554. The first vent hole 555, the second vent hole 556, the first valve film 551, and the second valve film 552, which are the same as those in FIGS. 18 and 19, are arranged in the center of the valve body 510. Therefore, the specific manner in which the valve body 510 opens and closes will not be described in detail here. As shown in FIG. 20, the fastener 570 is a ring-shaped, one-piece unit. Mounting portions 571 are arranged on both ends of the fastener 570 and can be fixed to the inside of the mounting hole 411 using a bolt. After mounting, the valve body 510 is placed between the fastener 570 and the mounting hole 411, and the fastener 570 is used to press the edge of the main body portion 554 to secure the valve body 510. The valve body 510 can control the opening and closing of the flow path 511 .

[0073] It should be noted that the foregoing is merely a preferred embodiment of the present application and the technical principles used. Those skilled in the art can understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious modifications, rearrangements, and substitutions without departing from the scope of protection of the present application. Therefore, although the present application has been described in detail with reference to the above-described embodiments, the present application is not limited to the above-described embodiments. Many other equivalent embodiments may be included without departing from the concept of the present application, and all fall within the scope of protection of the present application. [Explanation of symbols]

[0074] 1 vehicle 10 Battery pack 20 Motor 30 Headlight 40 Vehicle-mounted controller 410 Housing 411 Mounting hole 50 Vent valve 510 Valve body 511 Flow path 511a First channel 511b Second channel 512 first mounting end 513 Second mounting end 514 Clamp Connector 515 Notch 516 Connector 517 Mounting Platform 520 Waterproof and gas-permeable membrane 530 Protective Cover 540 Seal Ring 550 Volt Body 551 First Valve Film 551a First inclined portion 552 Second Valve Film 552a Second inclined portion 553 Isolation Department 554 Main body 555 First Vent 556 Second Vent 560 Connection 570 Fasteners 571 Mounting part

Claims

1. A valve, a valve body (510) having a flow path (511) connecting the inside and outside of a housing (410) to which the valve body (510) is attached; a bolt body (550) disposed in the valve body (510) to close the flow path (511), and when a pressure difference between the inside and the outside is greater than a threshold value, the bolt body (550) opens the flow path (511); Equipped with The flow path (511) comprises a first flow path (511a) and a second flow path (511b), The bolt body (550) a first valve film (551), the first valve film (551) closing the first flow path (511 a) and deforming to open the first flow path (511 a) when the inside pressure is greater than the outside pressure and the pressure difference is greater than a first pressure difference threshold; a second valve film (552) that closes the second flow path (511b) and deforms to open the second flow path (511b) when the outside pressure is greater than the inside pressure and the pressure difference is greater than a second pressure difference threshold; Equipped with A valve wherein the thickness of said first valve film (551) is less than the thickness of said second valve film (552).

2. The bolt body (550) a separator (553) that divides the flow path (511) into the first flow path (511a) and the second flow path (511b); The valve of claim 1 further comprising:

3. The first valve film (551) has a first inclined portion (551a), and the first inclined portion (551a) presses against the inner surface of the flow path (511), and the first inclined portion (551a) is configured to have a shape such that a shorter distance between the first inclined portion (551a) and the peripheral side of the first inclined portion (551a) indicates a shorter distance between the first inclined portion (551a) and the outside, the second valve film (552) has a second inclined portion (552a), the second inclined portion (552a) presses against the inner surface of the flow path (511), and the second inclined portion (552a) is configured to have a shape such that a shorter distance between the second inclined portion (552a) and a peripheral side of the second inclined portion (552a) indicates a shorter distance between the second inclined portion (552a) and the inner side; 3. A valve according to claim 1 or 2.

4. 4. The valve of claim 3, wherein when the first inclined portion (551 a) and the second inclined portion (552 a) extend the same distance toward the circumferential edge, the distance between the first inclined portion (551 a) and the outside is smaller than the distance between the second inclined portion (552 a) and the inside.

5. The bolt body (550) has a body portion (554), and a first vent hole (555) and a second vent hole (556) are formed in the body portion (554), the first valve film (551) covers the outside of the first vent hole (555), and the second valve film (552) covers the inside of the second vent hole (556). A valve according to any one of claims 1 to 4.

6. a plurality of first valve films (551) and a plurality of second valve films (552), wherein the plurality of first valve films (551) are in contact with the first vent holes (555), are inclined relative to one another to cover the first vent holes (555), and are shaped convexly toward the outside; and the plurality of second valve films (552) are in contact with the second vent holes (556), are inclined relative to one another to cover the second vent holes (556), and are shaped convexly toward the inside.

6. The valve of claim 5.

7. When the first valve film (551) and the second valve film (552) close the flow path, a first repulsive force acting on the first valve film (551) is smaller than a second repulsive force acting on the second valve film (552). A valve according to any one of claims 1 to 6.

8. The first valve film (551) or the second valve film (552) is made of silica gel, ethylene propylene diene monomer, plastic, or metal; A valve according to any one of claims 1 to 7.

9. the first pressure difference threshold and the second pressure difference threshold are greater than 10 Pa; A valve according to any one of claims 1 to 8.

10. a seal ring (540), said seal ring (540) being sleeved onto the outside of said valve body (510); a connecting portion (560) that connects the seal ring (540) and the bolt body (550); Furthermore, A notch (515) for the passage of the connection part (560) is arranged in the side wall of the flow channel (511). A valve according to any one of claims 1 to 9.

11. A waterproof gas-permeable membrane (520), the waterproof gas-permeable membrane (520) being disposed on the flow path (511).

11. The valve of claim 1, further comprising:

12. 1. An electronic device comprising: a housing (410) configured to have electronic components therein; A valve, the valve being arranged in the housing (410), the valve being a valve according to any one of claims 1 to 11. An electronic device comprising:

13. A vehicle comprising the electronic device of claim 12.

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