Fluid valve, thermal management system, and vehicle

Abstract

The application discloses a kind of fluid valve, thermal management system and vehicle, the fluid valve includes: valve shell is equipped with multiple flow channel ports, valve shell is equipped with through hole;Valve core includes connecting shaft and body, connecting shaft is connected with body to drive body synchronous rotation, connecting shaft is worn in through hole;Sealing element is sleeved on connecting shaft, the outer peripheral wall of sealing element is in contact with valve shell, the inner peripheral wall of sealing element is equipped with main sealing lip and first sealing lip, in the axial direction of connecting shaft, main sealing lip is located on the side of first sealing lip towards body, the protruding length of main sealing lip is greater than the protruding length of first sealing lip, main sealing lip and first sealing lip are respectively in contact with connecting shaft and are deformed.The fluid valve of the application can replace the sealing function of main sealing lip by first sealing lip due to fluid pressure when main sealing lip fails, which is beneficial to improve the dynamic sealing reliability of sealing element.

Description

Technical Field

[0001] This invention relates to the field of sealing technology for fluid valves, and more particularly to a fluid valve, a thermal management system, and a vehicle. Background Technology

[0002] In related technologies, shaft seals are required for the fluid valves in the thermal management system of new energy vehicles. The sealing structure generally uses a skeleton shaft seal, or rubber O-rings, or X-rings, etc. However, due to the influence of factors such as pressure changes, temperature changes, shell deformation, and shaft wear of the cooling fluid in the thermal management system, the sealing structure of the related technologies is prone to loosening and sealing failure when the temperature difference is large. It is also prone to wear, which reduces its service life and makes it easy to leak. This makes it impossible to guarantee the long-term reliability of the dynamic seal of the fluid valve. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a fluid valve that can ensure the seal between the connecting shaft and the valve body through the first sealing lip when the main sealing lip fails, thereby extending the service life of the seal and improving the dynamic sealing reliability of the seal.

[0004] A fluid valve according to an embodiment of the present invention includes: a valve housing having a plurality of flow channels and a through hole; a valve core including a connecting shaft and a body, the connecting shaft being connected to the body to drive the body to rotate synchronously, the body being rotatably disposed within the valve housing to guide the flow of fluid within the valve housing, the connecting shaft passing through the through hole; and a seal sleeved on the connecting shaft, the outer peripheral wall of the seal contacting the valve housing, the inner peripheral wall of the seal having a main sealing lip and a first sealing lip, the main sealing lip being located on the side of the first sealing lip facing the body in the axial direction of the connecting shaft, the protrusion length of the main sealing lip being greater than the protrusion length of the first sealing lip, and the main sealing lip and the first sealing lip respectively contacting and deforming the connecting shaft.

[0005] According to an embodiment of the fluid valve of the present invention, the sealing element is sleeved on the connecting shaft and contacts the valve body. The main sealing lip and the first sealing lip of the sealing element respectively contact the connecting shaft and deform to provide a sealing effect between the connecting shaft and the valve body. In the axial direction of the connecting shaft, the main sealing lip is located on the side of the first sealing lip facing the valve core body, and the protrusion length of the main sealing lip is greater than the protrusion length of the first sealing lip. Thus, when the main sealing lip fails to seal, the first sealing lip can ensure the seal between the connecting shaft and the valve body, thereby enhancing the sealing performance of the sealing element, avoiding leakage failure, extending the service life of the sealing element, and improving the dynamic sealing reliability of the sealing element.

[0006] According to some embodiments of the fluid valve of the present invention, there are multiple first sealing lips, and the multiple first sealing lips are spaced apart in the axial direction of the connecting shaft.

[0007] According to some embodiments of the fluid valve, the protrusion lengths of the plurality of first sealing lips are different.

[0008] According to some embodiments of the fluid valve, in the axial direction away from the body, the protrusion length of a plurality of first sealing lips gradually decreases.

[0009] According to some embodiments of the fluid valve of the present invention, the axial width of the main sealing lip is greater than the axial width of the first sealing lip.

[0010] According to some embodiments of the fluid valve of the present invention, a secondary sealing lip is further included, the secondary sealing lip being in contact with and deformed by the connecting shaft, the protrusion length of the secondary sealing lip being greater than the protrusion length of the first sealing lip.

[0011] According to some embodiments of the fluid valve of the present invention, the axial width of the secondary sealing lip is greater than the axial width of the first sealing lip.

[0012] According to some embodiments of the fluid valve of the present invention, the two ends of the outer peripheral wall of the seal in the axial direction respectively contact the valve housing, and a gap is provided between the remaining portion of the outer peripheral wall of the seal and the valve housing.

[0013] According to some embodiments of the fluid valve of the present invention, at least one of the two axial end faces of the seal is provided with an annular groove.

[0014] According to some embodiments of the fluid valve of the present invention, the cross-sectional shape of the seal is formed to be symmetrical about a first straight line, the first straight line being parallel to the radial direction of the seal.

[0015] According to some embodiments of the fluid valve of the present invention, the body is provided with at least one switching channel for connecting two of the flow ports, and the body is rotatably disposed within the valve housing so that the switching channel is switched to connect with different flow ports.

[0016] According to some embodiments of the fluid valve of the present invention, there are multiple switching channels, including a first connecting channel and a second connecting channel. The first connecting channel extends along the outer peripheral wall of the body, and the second connecting channel includes an inner flow channel and two connecting ports. The two connecting ports are connected through the inner flow channel and are located on the outer peripheral wall of the body. The inner flow channel is located inside the body. The valve core rotates to switch the first connecting channel with different flow channel ports and / or the second connecting channel with different flow channel ports.

[0017] The present invention also proposes a thermal management system.

[0018] A thermal management system according to an embodiment of the present invention includes: a manifold, the manifold having a plurality of flow channels for circulating media; a fluid valve, the fluid valve being the fluid valve described in any of the above embodiments, the plurality of flow channels being respectively connected to the plurality of flow channel openings.

[0019] The present invention also proposes a vehicle.

[0020] The vehicle according to an embodiment of the present invention includes the thermal management system described above.

[0021] The vehicle, the thermal management system, and the fluid valve described above have the same advantages over the prior art, and will not be repeated here.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] Figure 1 This is an exploded view of a fluid valve according to some embodiments of the present invention;

[0024] Figure 2 This is a schematic diagram of the valve housing according to some embodiments of the present invention;

[0025] Figure 3 This is a front view of a valve housing according to some embodiments of the present invention;

[0026] Figure 4 This is a schematic diagram of the valve core structure according to some embodiments of the present invention;

[0027] Figure 5This is a partial assembly drawing of the seal, connecting shaft, and valve housing according to some embodiments of the present invention;

[0028] Figure 6 yes Figure 5 A cross-sectional view of a partial assembly drawing;

[0029] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0030] Figure 8 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0031] Figure label:

[0032] Vehicle 1000, Thermal Management System 1001,

[0033] Fluid valve 100,

[0034] Valve housing 10, flow channel 11, through hole 12, annular protrusion 121, mounting plate 13.

[0035] Valve core 20, connecting shaft 21, body 22, switching channel 221, first connecting channel 2211, second connecting channel 2212

[0036] Seal 30, main sealing lip 31, first sealing lip 32, secondary sealing lip 33, first straight line L1,

[0037] Gap 40, annular groove 50, electrical control device 60, sealing gasket 70, valve cover 80. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0040] Below, refer to Figures 1-8 The fluid valve 100 according to an embodiment of the present invention is described.

[0041] The fluid valve 100 according to an embodiment of the present invention includes: a valve housing 10, a valve core 20, and a seal 30.

[0042] Specifically, the valve housing 10 is provided with multiple flow ports 11 and through holes 12. The valve core 20 includes a connecting shaft 21 and a body 22. The connecting shaft 21 is connected to the body 22 to drive the body 22 to rotate synchronously. The body 22 is rotatably disposed inside the valve housing 10 to guide the flow of fluid inside the valve housing 10. The connecting shaft 21 passes through the through hole 12. The sealing member 30 is sleeved on the connecting shaft 21. The outer peripheral wall of the sealing member 30 contacts the valve housing 10. The inner peripheral wall of the sealing member 30 is provided with a main sealing lip 31 and a first sealing lip 32. In the axial direction of the connecting shaft 21, the main sealing lip 31 is located on the side of the first sealing lip 32 facing the body 22. The protruding length of the main sealing lip 31 is greater than the protruding length of the first sealing lip 32. The main sealing lip 31 and the first sealing lip 32 respectively contact the connecting shaft 21 and deform.

[0043] It is understood that the flow port 11 on the valve body 10 can be connected to an external pipe, which contains fluid. Thus, the fluid can enter the fluid valve 100 from the flow port 11 or flow out of the fluid valve 100, so as to enable the fluid valve 100 to discharge or draw fluid to the outside. The fluid can be water, antifreeze or other liquids, which are not limited here.

[0044] Optionally, such as Figures 1-3 As shown, the valve housing 10 is provided with a mounting plate 13, which means that the valve housing 10 can be connected to other structures through the mounting plate 13 to fix the valve housing 10 and enhance the structural stability of the valve housing 10.

[0045] The valve core 20 is rotatably mounted inside the valve housing 10. The valve core 20 can be constructed as a column, and the valve core 20 includes a connecting shaft 21 and a body 22. The axis of the connecting shaft 21 coincides with the axis of the body 22 and is connected to the body 22. The connecting shaft 21 is connected to the motor of the electronic control device 60 through the through hole 12, so that the electronic control device 60 can control the rotation of the connecting shaft 21. In turn, the connecting shaft 21 drives the body 22 to rotate within the valve housing 10 along the axis of the connecting shaft 21, so as to guide the flow of fluid within the valve housing 10.

[0046] Preferably, an annular protrusion 121 is provided on one edge of the through hole 12 of the valve housing 10 facing inwards. The annular protrusion 121 extends inwards towards the valve housing 10, and the connecting shaft 21 passes through the annular protrusion 121 and the through hole 12 to extend to the outside of the valve housing 10 and connect with the electronic control device 60. There is a space for movement between the annular protrusion 121 and the connecting shaft 21 in the radial direction.

[0047] Furthermore, the seal 30 is made of an elastic material, such as rubber, which is not limited here, and the seal 30 is constructed in an annular shape so that the seal 30 is sleeved on the area of ​​the connecting shaft 21 near the through hole 12, that is, the inner peripheral wall of the seal 30 contacts the connecting shaft 21, and the outer peripheral wall of the seal 30 contacts the valve housing 10, so that the seal 30 can play a sealing role between the connecting shaft 21 and the valve housing 10.

[0048] For example, such as Figure 5 As shown, the seal 30 is located between the connecting shaft 21 and the annular protrusion 121, that is, the outer peripheral wall of the seal 30 is in contact with the inner peripheral wall of the annular protrusion 121, that is, the seal 30 is located within the movable space. In other words, the seal 30 is located between the connecting shaft 21 and the annular protrusion 121, which facilitates the limiting and fixing of the seal 30, thereby enhancing the structural stability of the seal 30 and enabling the seal 30 to play a sealing role between the connecting shaft 21 and the annular protrusion 121. This prevents the fluid in the valve housing 10 from overflowing along the gap between the through hole 12 and the connecting shaft 21 when the connecting shaft 21 drives the body 22 to rotate in the valve housing 10, thereby enhancing the reliability of the dynamic seal of the fluid valve 100.

[0049] Among them, such as Figure 6 and Figure 7 As shown, the inner peripheral wall of the seal 30 is provided with a main sealing lip 31 and a first sealing lip 32. Both the main sealing lip 31 and the first sealing lip 32 protrude radially along the seal 30. That is, in the axial direction of the connecting shaft 21, an annular sealing groove is defined between the main sealing lip 31 and the adjacent first sealing lip 32. In the axial direction of the connecting shaft 21, the main sealing lip 31 is located on the side of the first sealing lip 32 facing the body 22. The protruding length of the main sealing lip 31 is greater than the protruding length of the first sealing lip 32. The main sealing lip 31 and the first sealing lip 32 are in contact with the connecting shaft 21 and undergo elastic deformation.

[0050] In other words, the main sealing lip 31 and the first sealing lip 32 are spaced apart in the axial direction of the seal 30, and the protrusion length of the main sealing lip 31 is greater than that of the first sealing lip 32. When the connecting shaft 21 is sealed to the seal 30, both the main sealing lip 31 and the first sealing lip 32 undergo elastic deformation to contact the connecting shaft 21.

[0051] It should be noted that, since the main sealing lip 31 is in direct contact with the fluid inside the valve body 10, it is susceptible to excessive compression due to the impact force of the fluid, which may lead to deformation and sealing failure. The main sealing lip 31 can also fail due to elastic deformation under long-term stress. In short, the main sealing lip 31 is at risk of deformation and failure. However, in this invention, by setting the protrusion length of the main sealing lip 31 to be greater than that of the first sealing lip 32, the compression deformation at the main sealing lip 31 is greater than that at the first sealing lip 32. Therefore, even if the main sealing lip 31 fails due to deformation, the first sealing lip 32 can still maintain its elastic deformation. Thus, after the main sealing lip 31 fails due to deformation, the fluid will flow into the annular sealing groove, which buffers this portion of the fluid. Furthermore, the first sealing lip 32 will block the flow of fluid, meaning it still provides a sealing effect.

[0052] It should be noted that when the main sealing lip 31 is not in failure, the compression deformation of the first sealing lip 32 is relatively small. However, when the main sealing lip 31 fails, the fluid directly impacts the first sealing lip 32, which increases the compression deformation of the first sealing lip 32. As a result, the sum of the frictional torque of the main sealing lip 31 and the frictional torque of the first sealing lip 32 will not increase significantly.

[0053] In other words, after the main sealing lip 31 fails, only the initial contact pressure formed by the elastic deformation of the seal 30 itself remains. The fluid pressure on the main sealing lip 31 has actually failed because there is fluid pressure on both sides of the main sealing lip 31. At this time, the fluid forces the first sealing lip 32 to deform through the failed main sealing lip 31, thereby increasing the compression of the first sealing lip 32. However, since the deformation of the first sealing lip 32 is much smaller than the deformation of the main sealing lip 31, it will not significantly increase the frictional torque, and may even decrease it.

[0054] Therefore, the first sealing lip 32 can still maintain contact with the connecting shaft 21 after the main sealing lip 31 fails. In other words, when the main sealing lip 31 fails, the first sealing lip 32 forms a compensating seal, thereby ensuring the sealing effect of the sealing element 30 and improving the dynamic sealing reliability of the fluid valve 100.

[0055] It should be noted that the “protrusion length” described in this article includes the length protruding radially along the seal 30, or the length protruding in a direction intersecting the radial direction of the seal 30, and is not limited here.

[0056] It should be noted that in the prior art, since the seal 30 is in direct contact with the fluid inside the valve body 10, the seal 30 is subject to deformation due to alternating fluid pressure and temperature changes, as well as wear of the main sealing lip 31 caused by deformation of the valve body 10 and friction between the connecting shaft 21 and the seal 30. These factors lead to a decrease in the contact pressure between the main sealing lip 31 and the connecting shaft 21, causing the seal 30 to fail. Furthermore, the fluid pressure F (e.g., ...) Figure 7 The arrow F in the figure represents fluid pressure. Prolonged compression of the main sealing lip 31 can reduce the elasticity of the material of the main sealing lip 31, reduce the contact pressure, and thus easily lead to leakage failure, making it impossible to guarantee the long-term reliability of the dynamic seal of the fluid valve 100.

[0057] In this invention, by setting a main sealing lip 31 and a first sealing lip 32, when the main sealing lip 31 fails to seal due to the above-mentioned influencing factors, the first sealing lip 32 can still make sealing contact with the connecting shaft 21, thereby ensuring that the sealing element 30 can still be sealed and connected to the connecting shaft 21.

[0058] According to an embodiment of the fluid valve 100 of the present invention, the sealing element 30 is sleeved on the connecting shaft 21 and contacts the valve housing 10. The main sealing lip 31 and the first sealing lip 32 of the sealing element 30 respectively contact the connecting shaft 21 and deform to provide a sealing effect between the connecting shaft 21 and the valve housing 10. In the axial direction of the connecting shaft 21, the main sealing lip 31 is located on the side of the first sealing lip 32 facing the body 22 of the valve core 20, and the protrusion length of the main sealing lip 31 is greater than the protrusion length of the first sealing lip 32. Thus, when the main sealing lip 31 fails to seal, the first sealing lip 32 can ensure the seal between the connecting shaft 21 and the valve housing 10, thereby enhancing the sealing performance of the sealing element 30, avoiding leakage failure, extending the service life of the sealing element 30, and improving the dynamic sealing reliability of the sealing element 30.

[0059] In some embodiments, there are multiple first sealing lips 32, and the multiple first sealing lips 32 are spaced apart axially on the connecting shaft 21.

[0060] For example, such as Figure 6 and Figure 7 As shown, there are two first sealing lips 32, and the two first sealing lips 32 are distributed sequentially in the axial direction of the connecting shaft 21 in a direction away from the body 22. Thus, when the main sealing lip 31 fails, the two first sealing lips 32 can sequentially achieve compensatory sealing, thereby facilitating multiple sealing effects through multiple first sealing lips 32.

[0061] Of course, the first sealing lip 32 may also be provided in other quantities, which are not limited here.

[0062] Furthermore, the protrusion lengths of the multiple first sealing lips 32 are different.

[0063] For example, in the axial direction of the seal 30 away from the body 22, the protrusion lengths of the plurality of first sealing lips 32 increase or decrease sequentially. Of course, the protrusion lengths of the plurality of first sealing lips 32 can also be designed according to the actual sealing situation, and are not limited here.

[0064] Preferably, in the axial direction away from the body 22, the protrusion length of the plurality of first sealing lips 32 gradually decreases.

[0065] In other words, in the axial direction away from the body 22, the compression deformation of the multiple first sealing lips 32 gradually decreases, ensuring that even if one of the first sealing lips 32 fails under force, the other first sealing lips 32 still maintain elastic deformation to achieve a sealing state. Thus, when the main sealing lip 31 fails, the first sealing lip 32 adjacent to the main sealing lip 31 can first play a compensating sealing role. When the first sealing lip 32 adjacent to the main sealing lip 31 fails, the next first sealing lip 32 can play a better compensating sealing role. Thus, it is convenient for multiple first sealing lips 32 to play a compensating sealing role in sequence, thereby enhancing the sealing effect of the seal 30.

[0066] In some embodiments, the axial width of the main sealing lip 31 is greater than the axial width of the first sealing lip 32.

[0067] It is understandable that the main sealing lip 31 is in direct contact with the fluid inside the valve body 10, meaning that the main sealing lip 31 is subjected to significant fluid pressure. However, in this invention, the axial width of the main sealing lip 31 is greater than the axial width of the first sealing lip 32, which facilitates increasing the contact area between the main sealing lip 31 and the connecting shaft 21, enhancing the sealing stability between the main sealing lip 31 and the connecting shaft 21, and thus preventing the main sealing lip 31 from failing.

[0068] Meanwhile, when the connecting shaft 21 is connected to the main sealing lip 31, the main sealing lip 31 can provide a suitable radial force in both the early and late stages of the operation of the connecting shaft 21, so as to reduce the wear between the main sealing lip 31 and the connecting shaft 21. At the same time, the main sealing lip 31 can prevent the fluid in the valve body 10 from flowing out along the gap 40 between the seal 30 and the connecting shaft 21, thereby enhancing the dynamic sealing performance of the fluid valve 100.

[0069] In some embodiments, the fluid valve 100 further includes a secondary sealing lip 33, which contacts and deforms with the connecting shaft 21, and the protrusion length of the secondary sealing lip 33 is greater than the protrusion length of the first sealing lip 32.

[0070] Specifically, such as Figure 6 and Figure 7 As shown, the secondary sealing lip 33 is disposed on the inner peripheral wall of the sealing member 30, and the secondary sealing lip 33 is located on the side of the first sealing lip 32 away from the body 22 and in contact with the connecting shaft 21. That is, the main sealing lip 31, the first sealing lip 32 and the secondary sealing lip 33 are all in sealing contact with the connecting shaft 21 in the axial direction of the connecting shaft 21, wherein the first sealing lip 32 is located between the secondary sealing lip 33 and the main sealing lip 31.

[0071] Therefore, when both the main sealing lip 31 and the first sealing lip 32 fail, the secondary sealing lip 33 directly contacts the fluid. In other words, when both the main sealing lip 31 and the first sealing lip 32 fail, the secondary sealing lip 33 forms a compensating seal. That is, the main sealing lip 31, the first sealing lip 32 and the secondary sealing lip 33 form multiple seals in sequence, thereby ensuring the sealing effect of the sealing element 30 and improving the dynamic sealing reliability of the fluid valve 100.

[0072] Preferably, the axial width of the secondary sealing lip 33 is greater than the axial width of the first sealing lip 32.

[0073] It is understandable that when both the main sealing lip 31 and the first sealing lip 32 fail, the secondary sealing lip 33 directly contacts the fluid inside the valve body 10, meaning the secondary sealing lip 33 is subjected to the impact force of the fluid. However, in this invention, the axial width of the secondary sealing lip 33 is greater than the axial width of the first sealing lip 32, which facilitates increasing the contact area between the secondary sealing lip 33 and the connecting shaft 21, enhancing the sealing stability between the secondary sealing lip 33 and the connecting shaft 21, and thus preventing the secondary sealing lip 33 from failing.

[0074] In some embodiments, such as Figure 7 As shown, the two ends of the outer peripheral wall of the seal 30 in the axial direction are in contact with the valve housing 10, and the remaining part of the outer peripheral wall of the seal 30 is provided with a gap 40 between it and the valve housing 10.

[0075] It is understood that the two ends of the outer peripheral wall of the seal 30 in the axial direction are respectively in sealing contact with the valve housing 10 to enhance the sealing performance between the seal 30 and the valve housing 10. In other words, in this invention, the two ends of the outer peripheral wall of the seal 30 in the axial direction are respectively in contact with the inner peripheral wall of the annular protrusion 121, which can form a static seal between the seal 30 and the housing 121.

[0076] Among them, such as Figure 7As shown, a gap 40 is provided between the remaining part of the outer peripheral wall of the seal 30 and the valve body 10, so that when the fluid exerts pressure on the seal 30, the seal 30 can play a certain buffering role by setting the gap 40. In addition, setting the gap 40 helps to reduce the volume and weight of the seal 30, realize the miniaturization and lightweight design of the seal 30, and at the same time, it helps to save materials and reduce production costs.

[0077] In some embodiments, the groove formed between the main sealing lip 31 and the adjacent first sealing lip 32 is used to store lubricant, which facilitates the assembly of the seal 30 onto the connecting shaft 21 and facilitates the formation of lubrication between the contact surfaces of the main sealing lip 31, the first sealing lip 32, and the secondary sealing lip 33 and the connecting shaft 21 during the product's service life.

[0078] In some embodiments, such as Figure 7 As shown, at least one of the two axial end faces of the seal 30 is provided with an annular groove 50.

[0079] For example, either of the two axial end faces of the seal 30 is provided with an annular groove 50, or both axial end faces of the seal 30 are provided with an annular groove 50. This facilitates the reduction of the volume and weight of the seal 30 by setting the annular groove 50, thereby achieving the miniaturization and lightweight design of the seal 30. At the same time, it helps to save materials and reduce production costs.

[0080] Preferably, such as Figure 7 As shown, in the axial direction of the seal 30, the cross-sectional width of the annular groove 50 on the end face near the body 22 gradually increases towards the body 22, and the cross-sectional width of the annular groove 50 on the end face away from the body 22 gradually increases towards the body 22.

[0081] It should be noted that the end face near the body 22 will be in direct contact with the fluid inside the valve housing 10, meaning that the end face near the body 22 is greatly affected by factors such as fluid pressure.

[0082] Therefore, by constructing the cross-sectional width of the annular groove 50 on the end face near the body 22 to gradually increase in the direction of approaching the body 22, the annular groove 50 can buffer the fluid when it flows to the end face, thereby reducing the impact force of the fluid on the seal 30 and enhancing the structural stability of the seal 30.

[0083] Meanwhile, by constructing the cross-sectional width of the annular groove 50 on the end face away from the body 22 to gradually increase in the direction away from the body 22, the annular groove 50 can provide a certain deformation space for the seal 30 when it is compressed and deformed by fluid pressure, thereby reducing the impact force of the fluid on the seal 30 and enhancing the structural stability of the seal 30.

[0084] In some embodiments, the annular groove 50 is directly opposite the main sealing lip 31 or the secondary sealing lip 33 in the radial direction of the seal 30.

[0085] For example, in the radial direction of the seal 30, the annular groove 50 on the end face near the body 22 is directly opposite the main sealing lip 31, and the annular groove 50 on the end face away from the body 22 is directly opposite the secondary sealing lip 33. This makes it easy for the main sealing lip 31 and the secondary sealing lip 33 to deform, thereby facilitating the installation and removal of the seal 30 and reducing the difficulty of installation and removal of the seal 30.

[0086] In some embodiments, such as Figure 7 As shown, the cross-sectional shape of the seal 30 is symmetrical about the first straight line L1, which is parallel to the radial direction of the seal 30.

[0087] like Figure 7 As shown in the figure, the dashed line L1 is the first straight line. The seal 30 is symmetrically arranged along the first straight line L1, which facilitates the automated production of the seal 30 and reduces the production difficulty.

[0088] In some embodiments, such as Figure 1 As shown, the fluid valve 100 also includes a sealing gasket 70 and a valve cover 80. The sealing gasket 70 is adapted to be installed inside the valve housing 10 and located between the valve core 20 and the valve housing 10. The valve cover 80 is adapted to be installed at the end of the fluid valve 100 and connected to the valve housing 10 to prevent the valve core 20 from detaching from the valve housing 10.

[0089] In some embodiments, such as Figure 1 and Figure 4 As shown, the body 22 is provided with at least one switching channel 221, which is used to connect two flow ports 11. The body 22 is rotatably disposed in the valve housing 10 so that the switching channel can switch to connect with different flow ports 11.

[0090] When the switching channel 221 is connected to different flow ports 11, fluid can enter the fluid valve 100 or flow out of the fluid valve 100 through different flow ports, so that the fluid valve 100 has different working modes.

[0091] In other words, by setting a switching channel 221 on the body 22 and rotating the valve core 20 to switch the switching channel 221 to connect with two different flow ports 11, it is convenient to switch between different flow ports of the fluid valve 100 by rotating the valve core 20, thereby realizing different working modes of the fluid valve 100. Preferably, by adjusting the rotation angle of the valve core 20, the switching between different flow ports of the fluid valve 100 and the flow rate control can be realized, thereby controlling the flow rate of the fluid in the external pipeline.

[0092] It should be noted that in the prior art, multiple simple multi-way valves are usually set up to complete the switching of multiple modes. This results in too many simple multi-way valves, increasing costs and control difficulty. In contrast, the present invention, compared with the prior art of using multiple multi-way valves, can achieve more working modes in the same volume, which helps to reduce control difficulty and cost.

[0093] Furthermore, there are multiple switching channels 221, including a first connecting channel 2211 and a second connecting channel 2212. The first connecting channel 2211 extends along the outer peripheral wall of the body 22, and the second connecting channel 2212 includes an inner flow channel and two connecting ports. The two connecting ports are connected through the inner flow channel and are located on the outer peripheral wall of the body 22. The inner flow channel is located inside the body 22. The valve core 20 rotates to switch the connection between the first connecting channel 2211 and different flow channel ports 11 and / or the second connecting channel 2212 and different flow channel ports 11.

[0094] It is understood that the first connecting channel 2211 is used to connect two flow ports 11. By providing the first connecting channel 2211 on the outer peripheral wall of the valve core 20, and the first connecting channel 2211 connecting two flow ports 11, the rotation of the valve core 20 connects the first connecting channel 2211 with different flow ports 11, thereby realizing the switching of modes. In some examples of the present invention, the first connecting channel 2211 can be configured to connect two adjacent flow ports 11, which facilitates the production of the valve core 20, for example, the two flow ports 11 are adjacent.

[0095] The second connecting channel 2212 is used to connect two flow ports 11. The second connecting channel 2212 includes an inner flow channel and two connecting ports. The two connecting ports are connected through the inner flow channel. The two connecting ports are located on the outer peripheral wall of the valve core 20. The inner flow channel is located inside the valve core 20. By setting the inner flow channel inside the valve core 20, the space occupied by the valve core 20 is fully utilized. Based on the first connecting channel 2211 set on the outer peripheral wall of the valve core 20, the number of selectable modes is further increased, thereby meeting more working requirements.

[0096] Meanwhile, the inner flow channel of the second connecting channel 2212 is located inside the valve core 20, which can satisfy the connection of the two flow ports 11 under complex conditions. For example, if the two flow ports 11 on the diagonal are directly connected through the first connecting channel 2211 on the outer peripheral wall of the valve core 20, it will definitely affect the connection of the two flow ports 11 on both sides of the diagonal. By setting the inner flow channel inside the valve core 20, this problem can be avoided and the design difficulty of the valve core 20 can be reduced.

[0097] Furthermore, the valve core 20 rotates to switch the connection between the first connecting channel 2211 and different flow ports 11 and / or the second connecting channel 2212 and different flow ports 11. That is, multiple modes can be achieved by rotating the valve core 20. Compared with the method of multiple multi-way valves in related technologies, more modes can be achieved in the same volume, reducing control difficulty and cost.

[0098] For example, the rotation of valve core 20 causes the first connecting channel 2211 to switch connections with different flow ports 11, while the two connecting ports of the second connecting channel 2212 remain unconnected to the flow ports 11; or, the rotation of valve core 20 causes the second connecting channel 2212 to switch connections with different flow ports 11, while the first connecting channel 2211 remains unconnected to the flow ports 11; or, the rotation of valve core 20 causes the first connecting channel 2211 to switch connections with different flow ports 11 and the second connecting channel 2212 to switch connections with different flow ports 11, so that the rotation of a single valve core 20 simultaneously enables the connection of the first connecting channel 2211, the second connecting channel 2212, and different flow ports 11.

[0099] Therefore, by setting up a first connecting channel 2211 and a second connecting channel 2212, with the first connecting channel 2211 and the second connecting channel 2212 respectively distributed on the outer peripheral wall and inside of the valve core 20, the space of the valve core 20 is fully utilized, improving space utilization. Under the same volume constraint, more modes can be switched, eliminating the need to use multiple control valves for flow path switching, thus reducing costs and control difficulty. By setting up multiple flow ports 11 to switch and connect with the first connecting channel 2211 and the second connecting channel 2212, the number of switchable modes is further increased, further reducing costs and control difficulty.

[0100] In some embodiments, the fluid valve 100 may be configured as an oil pump, a water pump, or any valve body capable of guiding fluid flow, without limitation.

[0101] In some embodiments, the fluid valve 100 may be configured as a six-way valve or an eight-way valve, or other multi-channel switching valve, without limitation.

[0102] The present invention also proposes a thermal management system 1001.

[0103] The thermal management system 1001 according to an embodiment of the present invention includes: a manifold (not shown) and a fluid valve 100.

[0104] The manifold is provided with multiple flow channels for the flow medium. The fluid valve 100 is the fluid valve 100 of any of the above embodiments. The fluid valve 100 is provided on the manifold. The multiple flow channels are respectively connected to multiple flow port 11. The valve core 20 rotates to control the multiple flow channels to switch the connection so as to control the thermal management system 1001 to switch modes.

[0105] According to the thermal management system 1001 of the present invention, the sealing element 30 of the fluid valve 100 is sleeved on the connecting shaft 21 and contacts the valve housing 10. The main sealing lip 31 and the first sealing lip 32 of the sealing element 30 respectively contact the connecting shaft 21 and deform to provide a sealing effect between the connecting shaft 21 and the valve housing 10. In the axial direction of the connecting shaft 21, the main sealing lip 31 is located on the side of the first sealing lip 32 facing the body 22 of the valve core 20, and the protrusion length of the main sealing lip 31 is greater than the protrusion length of the first sealing lip 32. Thus, when the main sealing lip 31 fails to seal, the first sealing lip 32 can ensure the seal between the connecting shaft 21 and the valve housing 10, thereby enhancing the sealing performance of the sealing element 30, avoiding leakage failure, extending the service life of the sealing element 30, and improving the dynamic sealing reliability of the sealing element 30.

[0106] The present invention also proposes a vehicle 1000.

[0107] like Figure 8 As shown, the vehicle 1000 according to an embodiment of the present invention includes the thermal management system 1001 described above.

[0108] According to an embodiment of the present invention, in a vehicle 1000, the sealing element 30 of the thermal management system 1001 is sleeved on the connecting shaft 21 and contacts the valve housing 10. The main sealing lip 31 and the first sealing lip 32 of the sealing element 30 are respectively in contact with the connecting shaft 21 and deformed to provide a sealing effect between the connecting shaft 21 and the valve housing 10. In the axial direction of the connecting shaft 21, the main sealing lip 31 is located on the side of the first sealing lip 32 facing the body 22 of the valve core 20, and the protrusion length of the main sealing lip 31 is greater than the protrusion length of the first sealing lip 32. Thus, when the main sealing lip 31 fails to seal, the first sealing lip 32 can ensure the seal between the connecting shaft 21 and the valve housing 10, thereby enhancing the sealing performance of the sealing element 30, avoiding leakage failure, extending the service life of the sealing element 30, and improving the dynamic sealing reliability of the sealing element 30.

[0109] Here, vehicle 1000 can be a new energy vehicle. In some embodiments, the new energy vehicle can be a pure electric vehicle with an electric motor as the main driving force. In other embodiments, the new energy vehicle can also be a hybrid vehicle with both an internal combustion engine and an electric motor as the main driving force. Regarding the internal combustion engine and electric motor mentioned in the above embodiments that provide driving power for the new energy vehicle, the internal combustion engine can use gasoline, diesel, hydrogen, etc. as fuel, and the way to provide electrical energy to the electric motor can be a power battery, hydrogen fuel cell, etc., without special limitation. It should be noted that this is merely an exemplary description of the structure of new energy vehicles, etc., and is not intended to limit the scope of protection of this invention.

[0110] In the description of this invention, it should be understood that the terms "longitudinal," "lateral," "vertical," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0111] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0112] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0113] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0114] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0115] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fluid valve, characterized in that, include: The valve housing has multiple flow channels and through holes; The valve core includes a connecting shaft and a body. The connecting shaft is connected to the body to drive the body to rotate synchronously. The body is rotatably disposed in the valve housing to guide the flow of fluid in the valve housing. The connecting shaft passes through the through hole. A sealing element is fitted onto the connecting shaft. The outer peripheral wall of the sealing element contacts the valve housing. The inner peripheral wall of the sealing element is provided with a main sealing lip and a first sealing lip. In the axial direction of the connecting shaft, the main sealing lip is located on the side of the first sealing lip facing the body. The protrusion length of the main sealing lip is greater than the protrusion length of the first sealing lip. The main sealing lip and the first sealing lip respectively contact the connecting shaft and deform. It also includes a secondary sealing lip, which contacts and deforms with the connecting shaft, and the protrusion length of the secondary sealing lip is greater than the protrusion length of the first sealing lip; There are multiple first sealing lips, and the multiple first sealing lips are spaced apart in the axial direction of the connecting shaft; In the axial direction away from the body, the protruding length of the plurality of first sealing lips gradually decreases.

2. The fluid valve according to claim 1, characterized in that, The axial width of the main sealing lip is greater than the axial width of the first sealing lip.

3. The fluid valve according to claim 1, characterized in that, The axial width of the secondary sealing lip is greater than the axial width of the first sealing lip.

4. The fluid valve according to claim 1, characterized in that, The two ends of the outer peripheral wall of the seal in the axial direction are in contact with the valve housing, and the remaining part of the outer peripheral wall of the seal is provided with a gap between it and the valve housing.

5. The fluid valve according to claim 1, characterized in that, At least one of the two axial end faces of the seal is provided with an annular groove.

6. The fluid valve according to claim 1, characterized in that, The cross-sectional shape of the seal is symmetrical about a first straight line, which is parallel to the radial direction of the seal.

7. The fluid valve according to any one of claims 1-6, characterized in that, The body is provided with at least one switching channel for connecting two of the flow ports. The body is rotatably disposed within the valve housing so that the switching channel can switch between connecting with different flow ports.

8. The fluid valve according to claim 7, characterized in that, The switching channels are multiple, including a first connecting channel and a second connecting channel. The first connecting channel extends along the outer peripheral wall of the body, and the second connecting channel includes an inner flow channel and two connecting ports. The two connecting ports are connected through the inner flow channel and are located on the outer peripheral wall of the body. The inner flow channel is located inside the body. The valve core rotates to switch the first connecting channel with different flow channel ports and / or the second connecting channel with different flow channel ports.

9. A thermal management system, characterized in that, include: A manifold, wherein the manifold is provided with multiple channels for the flow of a medium; A fluid valve, wherein the fluid valve is any one of claims 1-8, and the plurality of flow channels are respectively connected to the plurality of flow channel ports.

10. A vehicle, characterized in that, Includes the thermal management system according to claim 9.

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