Ventilation valve, electric drive system and vehicle

Abstract

The utility model relates to a ventilation valve, an electric drive system and a vehicle, the ventilation valve comprises a valve body, the valve body is internally provided with a valve cavity and is provided with a mounting end and a ventilation end, the mounting end is used for being connected with a shell of the electric drive system, and the ventilation end is provided with a waterproof ventilation film; and the blocking piece is arranged on the side, close to the mounting end, of the waterproof breathable film, and the blocking piece is movably arranged on the valve body and enables the waterproof breathable film to selectively communicate with the inner space of the shell through the valve cavity. According to the technical scheme, the breathable valve can protect the waterproof breathable film, and then the effectiveness and the service life of the waterproof breathable film are ensured.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle parts technology, and more specifically, to a breather valve, an electric drive system, and a vehicle. Background Technology

[0002] In related technologies, after the electric drive system is installed with other vehicle components (such as high-voltage wiring harnesses, transmission structures, etc.), if the air tightness of the electric drive system is to be tested, the vent valve of the electric drive system needs to be sealed from the outside. This causes the air pressure during the air tightness test to damage the waterproof and breathable membrane of the vent valve, resulting in the failure of the waterproof and breathable membrane or a reduction in its service life. Utility Model Content

[0003] The purpose of this disclosure is to provide a vent valve, an electric drive system, and a vehicle that can protect a waterproof and breathable membrane to ensure the effectiveness and service life of the membrane.

[0004] To achieve the above objectives, according to a first aspect of this disclosure, a vent valve is provided, comprising a valve body having a valve cavity and having an mounting end and a vent end, the mounting end being for connecting to the housing of an electric drive system, the vent end being fitted with a waterproof and breathable membrane; and a sealing member disposed on the side of the waterproof and breathable membrane near the mounting end, the sealing member being movably disposed on the valve body, and allowing the waterproof and breathable membrane to selectively communicate with the internal space of the housing through the valve cavity.

[0005] Optionally, the valve body has a communication port communicating with the valve cavity, the communication port being used to connect the internal space of the valve cavity and the housing, and the sealing member being used to selectively close the communication port.

[0006] Optionally, the valve body includes a first part and a second part, the first part having the communication port, and the second part being provided with the waterproof and breathable membrane, wherein the first part and the second part are movably connected together, and the sealing member is connected to the second part through a connector.

[0007] Optionally, the sealing member is arranged on the side of the communication port away from the valve cavity, and the first part is provided with a first sealing member on the end face of the side of the communication port. When the sealing member closes the communication port, the sealing member abuts against the first sealing member.

[0008] Optionally, both the first and second parts are constructed in a cylindrical shape, with the first part sleeved on the second part and threadedly connected to the second part, so that the two can move relative to each other along the axial direction of the valve body.

[0009] Optionally, the connector includes an axial section and a radial section connected to each other, the axial section being connected to the sealing member, and the radial section being connected to the inner wall of the second split.

[0010] Optionally, the outer sidewalls of both the first and second parts are constructed as hexagonal prisms.

[0011] Optionally, a second seal is provided at the connection between the first part and the housing, and / or a third seal is provided at the connection between the first part and the second part.

[0012] According to a second aspect of this disclosure, an electric drive system is provided, the electric drive system including a housing and a vent valve connected to the housing, the vent valve being the aforementioned vent valve.

[0013] According to a third aspect of this disclosure, a vehicle is provided, the vehicle including the above-described electric drive system.

[0014] Through the above technical solution, in the vent valve provided in this disclosure, after the vent valve is connected to the housing of the electric drive system, when it is necessary to test the airtightness of the electric drive system, the sealing member can be moved to disconnect the communication between the waterproof breathable membrane and the internal space of the housing. That is, the valve cavity is not connected to the waterproof breathable membrane and the internal space of the housing at this time. Thus, when the airtightness of the electric drive system is tested, i.e., when air is injected into the internal space of the housing, the pressurized gas will not come into contact with the waterproof breathable membrane, thereby preventing excessive air pressure in the internal space of the housing from damaging the waterproof breathable membrane. In summary, this vent valve can protect the waterproof breathable membrane, ensuring its effectiveness and service life. After the airtightness test of the electric drive system is completed, the sealing member can be moved to allow the waterproof breathable membrane to communicate with the internal space of the housing through the valve cavity. At this time, the vent valve can maintain the airtightness of the electric drive system.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of a vent valve provided in an exemplary embodiment of the present disclosure;

[0018] Figure 2 This is yet another perspective view of the vent valve provided in an exemplary embodiment of this disclosure;

[0019] Figure 3 This is a cross-sectional view of a vent valve provided in an exemplary embodiment of this disclosure;

[0020] Figure 4 This is another cross-sectional view of the vent valve provided in an exemplary embodiment of this disclosure;

[0021] Figure 5 This is a cross-sectional view of a vent valve provided in yet another exemplary embodiment of this disclosure.

[0022] Explanation of reference numerals in the attached figures

[0023] 100. Valve body; 110. First part; 111. Mounting end; 120. Second part; 121. Vent end; 130. Connecting port; 140. Connecting part; 150. Operating part; 160. First stepped surface; 170. Second stepped surface; 180. Valve cavity; 181. Cavity; 182. Through hole; 300. Waterproof and breathable membrane; 400. Sealing component; 500. Connecting component; 510. Axial section; 520. Radial section; 610. First sealing element; 620. Second sealing element; 630. Third sealing element; 1000. Electric drive system. Detailed Implementation

[0024] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0025] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" refer to "inner" and "outer" relative to the contour of the corresponding component itself. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance implications. Additionally, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0026] According to the first aspect of this disclosure, reference to Figures 1 to 3 As shown, a vent valve is provided, including: a valve body 100, a valve cavity 180 disposed within the valve body 100, and having an mounting end 111 and a vent end 121, the mounting end 111 being used to connect to the housing of an electric drive system 1000, and a waterproof and breathable membrane 300 being mounted on the vent end 121; and a sealing member 400 disposed on the side of the waterproof and breathable membrane 300 near the mounting end 111, the sealing member 400 being movably disposed on the valve body 100, and allowing the waterproof and breathable membrane 300 to selectively communicate with the internal space of the housing through the valve cavity 180.

[0027] Through the above technical solution, in the vent valve provided in this disclosure, after the vent valve is connected to the housing of the electric drive system 1000, when it is necessary to test the airtightness of the electric drive system 1000, the sealing member 400 can be moved to disconnect the communication between the waterproof breathable membrane 300 and the internal space of the housing. That is to say, the valve cavity 180 is not connected to the waterproof breathable membrane 300 and the internal space of the housing at this time. In this way, when the airtightness of the electric drive system 1000 is tested, that is, when air is injected into the internal space of the housing, the pressurized gas will not come into contact with the waterproof breathable membrane 300, thereby avoiding excessive air pressure in the internal space of the housing and damaging the waterproof breathable membrane 300. In summary, this vent valve can protect the waterproof breathable membrane 300 to ensure the effectiveness and service life of the waterproof breathable membrane 300. After the airtightness test of the electric drive system 1000 is completed, the sealing component 400 can be moved to allow the waterproof and breathable membrane 300 to communicate with the internal space of the housing through the valve chamber 180. At this time, the vent valve can keep the electric drive system 1000 breathable.

[0028] It should be noted that the waterproof and breathable membrane 300 can also connect to the external space through the valve chamber 180. Thus, when the temperature of the electric drive system 1000 changes, causing an increase in the internal air pressure, the gas inside the housing can flow sequentially through the valve chamber 180 and the waterproof and breathable membrane 300 to be discharged into the external space, thereby ensuring the safe and stable operation of the electric drive system 1000. Furthermore, the sealing element 400 is located on the side of the waterproof and breathable membrane 300 near the mounting end 111, which also prevents the sealing element 400 from accidentally colliding with the waterproof and breathable membrane 300 during its movement relative to the valve body 100, thereby protecting the waterproof and breathable membrane 300.

[0029] In the breathable valve provided in this disclosure, selective communication between the waterproof and breathable membrane 300 and the aforementioned internal space can be achieved in any suitable manner. As an exemplary embodiment, refer to... Figures 1 to 4 As shown, the valve body 100 may have a communication port 130 communicating with the valve cavity 180. The communication port 130 can be used to connect the valve cavity 180 and the internal space of the housing. The sealing member 400 can be used to selectively close the communication port 130. In this way, when the sealing member 400 closes the communication port 130, the communication between the valve cavity 180 and the aforementioned internal space can be disconnected, thereby disconnecting the communication between the waterproof and breathable membrane 300 and the internal space. When the sealing member 400 opens the communication port 130, the communication between the valve cavity 180 and the aforementioned internal space can be realized, thereby allowing the waterproof and breathable membrane 300 to communicate with the internal space through the valve cavity 180.

[0030] In another exemplary embodiment, an operating element may be provided on the outside of the valve body 100. The operating element can operate the sealing element 400 to move radially relative to the valve cavity 180, such that the sealing element 400 completely closes the cross-section of the valve cavity 180, or opens at least a portion of the cross-section of the valve cavity 180. When the sealing element 400 completely closes the cross-section of the valve cavity 180, the sealing element 400 can disconnect the waterproof and breathable membrane 300 from the internal space; when the sealing element 400 opens at least a portion of the cross-section of the valve cavity 180, the waterproof and breathable membrane 300 can communicate with the internal space through the valve cavity 180.

[0031] In the vent valve provided in this disclosure, the valve body 100 can be constructed in any suitable manner. As an exemplary embodiment, reference is made to... Figures 1 to 4 As shown, the valve body 100 may include a first part 110 and a second part 120. The first part 110 may have a communication port 130, and the second part 120 may be provided with a waterproof and breathable membrane 300. The first part 110 and the second part 120 are movably connected together, and the sealing member 400 can be connected to the second part 120 through the connector 500. In this way, the sealing element 400 and the second part 120 can move synchronously. Furthermore, since the second part 120 and the first part 110 are connected together in a relatively movable manner, both the sealing element 400 and the second part 120 can move relative to the first part 110. That is to say, when the first part 110 and the second part 120 move relative to each other, the sealing element 400 and the connecting port 130 can move relative to each other. Thus, the movement of the second part 120 can be used to achieve selective closure of the connecting port 130 by the sealing element 400. The advantage of this arrangement is that the operator can operate the second part 120 relative to the first part 110 from outside the vent valve to control the selective connection between the waterproof and breathable membrane 300 and the aforementioned internal space, making the operation convenient.

[0032] In the vent valve provided in this disclosure, in order to ensure the sealing effect of the sealing member 400 on the communication port 130, as an exemplary embodiment, reference is made to... Figures 1 to 4As shown, the sealing element 400 can be arranged on the side of the connecting port 130 away from the valve cavity 180. A first sealing element 610 can be provided on the end face of the first split body 110 near the connecting port 130. When the sealing element 400 blocks the connecting port 130, the sealing element 400 can abut against the first sealing element 610. Thus, when the sealing element 400 blocks the connecting port 130, the first sealing element 610 is located between the first split body 110 and the sealing element 400, sealing the connection between the first split body 110 and the sealing element 400 to prevent gas from entering the valve cavity 180 from the connection between the first split body 110 and the sealing element 400. The end face where the first sealing element 610 is located can be referred to as the first end face. The sealing element 400 can cover at least a portion of the first end face. It should be noted that the greater the overlap between the sealing element 400 and the first end face, the better the sealing effect of the sealing element 400 on the connecting port 130. In a preferred embodiment, the sealing member 400 can completely cover the first end face. In this embodiment, when the sealing member 400 opens the communication port 130, the sealing member 400 is located inside the housing.

[0033] In the vent valve provided in this disclosure, the first part 110 and the second part 120 can be connected in any suitable manner. As an exemplary embodiment, refer to... Figures 1 to 4 As shown, both the first part 110 and the second part 120 can be constructed as cylinders. The first part 110 can be sleeved on and threadedly connected to the second part 120, allowing them to move relative to each other along the axial direction of the valve body 100. Thus, the threaded connection between the second part 120 and the first part 110 converts the rotation of the second part 120 relative to the first part 110 into movement of the second part 120 relative to the first part 110. Therefore, by rotating the second part 120, the operator can move the sealing element 400 relative to the first part 110, achieving selective closure of the communication port 130 by the sealing element 400, making operation convenient. Furthermore, the threaded engagement between the second part 120 and the first part 110 prevents accidental disengagement, improving the reliability of the connection between them.

[0034] In another exemplary embodiment, one of the first split body 110 and the second split body 120 may be provided with a groove, and the other may be provided with a slider, with the groove slidably disposed in the slider. The groove may be constructed as an I-shaped groove arranged axially along the valve body 100. The I-shaped groove may include a main groove section and sub-grooves connecting the two ends of the main groove section. Thus, by pulling the second split body 120, the sealing member 400 can be moved relative to the first split body 110. Furthermore, when the slider slides to both ends of the main groove section, rotating the second split body 120 allows the slider to engage in the sub-grooves. In other words, the second split body 120 and the first split body 110 can remain relatively stationary, allowing the sealing member 400 to remain in the open communication port 130 state, or in the closed communication port 130 state.

[0035] In the vent valve provided in this disclosure, the connector 500 can be constructed in any suitable manner. As an exemplary embodiment, reference is made to... Figures 1 to 4 As shown, the connector 500 may include an axial segment 510 and a radial segment 520 connected to each other. The axial segment 510 may be connected to the sealing member 400, and the radial segment 520 may be connected to the inner wall of the second part 120. This enables the connection between the second part 120 and the sealing member 400, allowing the sealing member 400 and the second part 120 to move synchronously. Thus, by operating only the second part 120, the sealing member 400 can be controlled to open or close the communication port 130. The radial segment 520 may be arranged on the side of the waterproof and breathable membrane 300 near the first part 110. This not only enables the connection between the inner wall of the second part 120 and the axial segment 510, but also prevents the axial segment 510 from damaging the waterproof and breathable membrane 300.

[0036] In the vent valve provided in this disclosure, for ease of operation, as an exemplary embodiment, reference is made to... Figures 1 to 4As shown, the outer sidewalls of both the first segment 110 and the second segment 120 can be constructed in a hexagonal prism shape. This allows the first segment 110 and the second segment 120 to be easily rotated using tools such as a wrench, facilitating separate operation of the first segment 110 and the second segment 120. By manipulating the hexagonal prism-shaped outer sidewall of the first segment 110, the first segment 110 can be moved relative to the housing. Similarly, by manipulating the hexagonal prism-shaped outer sidewall of the second segment 120, the second segment 120 can be moved relative to the first segment 110. Based on this, the tool operation can ensure that the first part 110 is securely installed on the shell. Similarly, it can also ensure that the second part 120 is securely installed on the first part 110. Therefore, when the waterproof and breathable membrane 300 is disconnected from the internal space of the shell, the secure installation between the second part 120 and the first part 110 can ensure that the sealing member 400 presses against the first sealing member 610, thereby ensuring the sealing effect of the sealing member 400. This further prevents the air pressure inside the shell from affecting the waterproof and breathable membrane 300.

[0037] As an exemplary embodiment, the first part 110 and the second part 120 can have the same shape. That is, both the first part 110 and the second part 120 can include a connecting part 140 and an operating part 150. The connecting part 140 can be constructed as a cylinder, and the outer wall of the connecting part 140 can have external threads. The outer wall of the operating part 150 can be constructed as the aforementioned hexagonal prism, and the inner wall of the operating part 150 can be constructed as a cylinder with internal threads. This facilitates the fitting of the operating part 150 of the first part 110. The connecting portion 140 of the second split 120 enables a threaded connection between the first split 110 and the second split 120. A first stepped surface 160 may be provided between the operating portion 150 and the connecting portion 140. In this way, the first stepped surface 160 of the first split 110 can stop the first split 110 from moving toward the housing, and the first stepped surface 160 of the second split 120 can be used to stop the second split 120 from moving toward the housing. This can prevent the sealing member 400 from accidentally damaging the internal structure of the electric drive system 1000.

[0038] In yet another exemplary embodiment, reference is made to Figure 5As shown, the sealing member 400 can also be arranged within the valve cavity 180, located between the connecting portion 140 of the first split 110 and the connecting portion 140 of the second split 120. In this embodiment, a ventilation space exists between the sealing member 400 and the inner wall of the operating portion 150 of the first split 110, allowing gas in the valve cavity 180 to circulate through the ventilation space. Furthermore, in this embodiment, a second stepped surface 170 exists between the inner wall surface of the operating portion 150 of the first split 110 and the inner wall surface of the connecting portion 140. A first sealing member 610 can be provided on the second stepped surface 170. The sealing member 400 is used to selectively close the second stepped surface 170. When the sealing member 400 closes the second stepped surface 170, it abuts against the first sealing member 610. This facilitates the disassembly of the first split 110 and the second split 120, and the arrangement of the sealing member 400 within the valve cavity 180 helps save internal space in the housing.

[0039] In this embodiment, the first part 110 and the second part 120 can be connected by threads. In this way, the thread engagement force can prevent the first part 110 and the second part 120 from accidentally separating, and can also ensure that the sealing member 400 is pressed tightly against the first sealing member 610.

[0040] In the vent valve provided in this disclosure, in order to further ensure the sealing effect of the sealing element 400, as an exemplary embodiment, reference is made to... Figures 1 to 4 As shown, a second seal 620 may be provided at the connection between the first part 110 and the housing, and / or a third seal 630 may be provided at the connection between the first part 110 and the second part 120. This prevents gas from leaking from the connection between the first part 110 and the housing, or from the connection between the first part 110 and the second part 120.

[0041] Furthermore, it should be noted that this application does not improve the structure of the waterproof and breathable membrane 300 and the valve cavity 180, so it will not be described in detail here. The structure of the waterproof and breathable membrane 300 and the valve cavity 180 can be selected in any suitable form, and the description in the drawings of the specification (for example, the valve cavity 180 includes a cavity 181 and a through hole 182) does not constitute a limitation on this application.

[0042] According to a second aspect of this disclosure, an electric drive system is provided, comprising a housing and a vent valve connected to the housing, the vent valve being the aforementioned vent valve. Therefore, this electric drive system possesses all the aforementioned beneficial effects, which will not be elaborated upon herein.

[0043] According to a third aspect of this disclosure, a vehicle is provided that includes the aforementioned electric drive system. Therefore, the vehicle possesses all the aforementioned beneficial effects, which will not be elaborated upon herein.

[0044] In use, the vent valve provided in this disclosure has its connecting portion 140 of the first split 110 installed in the housing. When the airtightness of the electric drive system 1000 needs to be tested, the operator rotates the second split 120 from the outside of the vent valve to move the second split 120 away from the housing. During this process, the second split 120 can drive the sealing member 400 to move synchronously, approaching the connection port 130 until the sealing member 400 presses against the first sealing member 610. At this time, the sealing member 400 can close the connection port 130. That is to say, the valve cavity 180 is not connected to the waterproof and breathable membrane 300 and the internal space of the housing at this time. In this way, when the airtightness test of the electric drive system 1000 is performed, that is, when the internal space of the housing is filled with air, the pressurized gas will not come into contact with the waterproof and breathable membrane 300, thereby avoiding excessive air pressure in the internal space of the housing and damage to the waterproof and breathable membrane 300. After the airtightness test of the electric drive system 1000 is completed, the operator can rotate the second part 120 to move the second part 120 closer to the housing. During this process, the second part 120 can drive the sealing part 400 to move synchronously to open the connection port 130. In this way, the waterproof and breathable membrane 300 can connect to the internal space of the housing through the valve chamber 180 and the connection port 130.

[0045] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0046] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0047] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A vent valve, characterized in that, include: The valve body has a valve cavity and has an installation end and a vent end. The installation end is used to connect to the housing of the electric drive system, and the vent end is equipped with a waterproof and breathable membrane. and A sealing element is disposed on the side of the waterproof and breathable membrane near the mounting end. The sealing element is movably disposed on the valve body and allows the waterproof and breathable membrane to selectively connect to the internal space of the housing through the valve cavity.

2. The vent valve according to claim 1, characterized in that, The valve body has a communication port that communicates with the valve cavity, the communication port being used to connect the internal space of the valve cavity and the housing, and the sealing member being used to selectively close the communication port.

3. The vent valve according to claim 2, characterized in that, The valve body includes a first part and a second part. The first part has the communication port, and the second part is provided with the waterproof and breathable membrane. The first part and the second part are movably connected together, and the sealing member is connected to the second part through a connector.

4. The vent valve according to claim 3, characterized in that, The sealing member is arranged on the side of the communication port away from the valve cavity. The first part is provided with a first sealing member on the end face of the side of the communication port. When the sealing member closes the communication port, the sealing member abuts against the first sealing member.

5. The vent valve according to claim 3, characterized in that, Both the first and second parts are cylindrical in shape. The first part is sleeved on the second part and threadedly connected to the second part, so that the two can move relative to each other along the axial direction of the valve body.

6. The vent valve according to claim 5, characterized in that, The connector includes an axial section and a radial section connected to each other. The axial section is connected to the sealing member, and the radial section is connected to the inner wall of the second part.

7. The vent valve according to claim 5, characterized in that, The outer walls of both the first and second parts are constructed in a hexagonal prism shape.

8. The vent valve according to claim 3, characterized in that, A second seal is provided at the connection between the first component and the housing, and / or a third seal is provided at the connection between the first component and the second component.

9. An electric drive system, characterized in that, The electric drive system includes a housing and a vent valve connected to the housing, the vent valve being the vent valve according to any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes the electric drive system according to claim 9.

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