Seal, multi-channel switching valve, thermal management system of vehicle, and vehicle

Abstract

The application discloses a sealing element, a multi-channel switching valve, a thermal management system of a vehicle and the vehicle. The sealing element comprises a body and a plurality of sealing ribs, at least part of the sealing ribs is an outer rib, the outer rib is arranged at an outer edge of the body and extends along a circumference of the body, wherein the outer rib is inclined towards a center direction adjacent to the body, and an inclination angle of the outer rib is not greater than 30 degrees. According to the sealing element, the outer rib is inclined towards the center direction adjacent to the body, so that the body is convenient to demould in the production process, and the outer rib is prevented from being severely deformed or deflected under stress, and the sealing performance of the sealing element is ensured. The inclination angle of the outer rib is not greater than 30 degrees, the sealing surface pressure of the position of the outer rib can be ensured, the sealing effect of the sealing rib is ensured, and the sealing performance of the sealing element is further ensured.

Description

Technical Field

[0001] This invention relates to the field of sealing technology, and in particular to a sealing element, a multi-channel switching valve, a vehicle thermal management system, and a vehicle. Background Technology

[0002] In related technologies, the structural design of the seals in multi-channel switching valves is unreasonable, which makes the seals prone to severe deformation under stress, resulting in poor sealing performance. Due to inadequate sealing, multi-channel switching valves are prone to problems such as fluid leakage. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this invention is to provide a sealing element in which the outwardly protruding rib is inclined towards the center of the adjacent body, facilitating demolding during the body's production process and preventing severe deformation or deflection of the outwardly protruding rib under stress, thus ensuring the sealing performance of the sealing element. The inclination angle of the outwardly protruding rib is no greater than 30°, ensuring the sealing surface pressure at the rib location and guaranteeing the sealing effect of the rib, thereby further ensuring the sealing performance of the sealing element. For example, when the sealing element is used in a multi-channel switching valve, it can prevent fluid leakage problems in the multi-channel switching valve.

[0004] The present invention also proposes a multi-channel switching valve having the above-mentioned sealing element.

[0005] The present invention also proposes a thermal management system having the above-mentioned multi-channel switching valve.

[0006] The present invention also proposes a vehicle having the above-mentioned thermal management system.

[0007] According to a first aspect of the present invention, a sealing member includes: a body having at least one clearance through hole formed thereon; a plurality of sealing ribs disposed on a first side of the body, at least a portion of the sealing ribs being external ribs, the external ribs being disposed on the outer edge of the body and extending circumferentially along the body; wherein the external ribs are inclined toward the center of the body, and the inclination angle of the external ribs is not greater than 30°.

[0008] According to the embodiments of the present invention, the seal has an outwardly protruding rib that is inclined towards the center of the adjacent body, which facilitates demolding during the production of the body and avoids severe deformation or deflection of the outwardly protruding rib under stress, thus ensuring the sealing performance of the seal. The inclination angle of the outwardly protruding rib is not greater than 30°, which can ensure the sealing surface pressure at the position of the outwardly protruding rib and ensure the sealing effect of the sealing rib, thereby further ensuring the sealing performance of the seal. For example, when the seal is used in a multi-channel switching valve, it can avoid the problem of fluid leakage in the multi-channel switching valve.

[0009] According to some embodiments of the present invention, the inclination angle of the outwardly protruding rib is in the range of 12° to 23°.

[0010] According to some embodiments of the present invention, the protruding ribs are a plurality of spaced-apart ribs in the direction from the outer edge of the body to the center of the body.

[0011] According to some alternative embodiments of the present invention, the outwardly protruding ribs are two or three spaced apart in the direction from the outer edge of the body to the center of the body.

[0012] According to some optional embodiments of the present invention, the inclination angle of the inner rib of two adjacent ribs is not greater than the inclination angle of the outer rib.

[0013] In some optional embodiments of the present invention, the difference between the inclination angle of the outermost rib and the inclination angle of the innermost rib in two adjacent ribs is in the range of 2° to 10°.

[0014] According to some optional embodiments of the present invention, the outer contour of the cross-section of the outwardly protruding rib includes a first arc segment, and the ratio of the absolute value of the radius difference between the first arc segments of two adjacent outwardly protruding ribs to the radius of the outwardly protruding rib located on the inner side is not greater than 0.25.

[0015] In some optional embodiments of the present invention, the absolute value of the difference in radius between the first arc segments of two adjacent protruding ribs is not greater than 0.2 compared with the radius of the protruding rib located on the inner side.

[0016] According to some embodiments of the present invention, the outer contour line of the cross-section of the protruding rib includes a first circular arc segment and a first straight line segment connected together, wherein the first straight line segment is tangent to the first circular arc segment.

[0017] According to some embodiments of the present invention, the outermost outer wall surface of the outermost protruding rib is a first outer wall surface, and the outer wall surface of the body is a second outer wall surface, wherein the first outer wall surface is connected to the second outer wall surface; wherein the first outer wall surface includes connected arcuate and planar portions, and the planar portion is connected to and coplanar with the second outer wall surface.

[0018] According to some embodiments of the present invention, the edge of the avoidance through hole adjacent to the protruding rib is the outer edge of the hole, the distance between the outer edge of the hole and the outer edge of the body is L, the outer contour line of the cross section of the protruding rib includes a first arc segment, the radius of the first arc segment is R, and the ratio of R to L is in the range of 0.1 to 0.18.

[0019] According to some embodiments of the present invention, the body extends in an arc shape in a first direction, the protruding ribs are located at opposite ends of the body along the first direction, and the protruding ribs extend along a second direction, the second direction being perpendicular to the first direction.

[0020] According to some embodiments of the present invention, a wear-resistant layer or a wear-reducing layer is provided on a second side of the body that is disposed opposite to the first side of the body.

[0021] According to a second aspect of the present invention, a multi-channel switching valve includes: a valve housing having a plurality of spaced-apart flow holes; a valve core movably disposed within the valve housing, the valve core having at least one switching channel communicating with two of the flow holes, the valve core being moved to switch the switching channel to communicate with different flow holes; and a sealing element, the sealing element being the same as described in the first aspect of the present invention, having a plurality of clearance holes for fluid flow, the sealing element being disposed within the valve housing, the plurality of clearance holes communicating with the plurality of flow holes in a one-to-one correspondence, the sealing rib contacting the inner wall of the valve housing, and the second side of the body contacting the valve core.

[0022] According to an embodiment of the present invention, the multi-channel switching valve has the aforementioned sealing element provided on it. The protruding rib is inclined towards the center of the adjacent body, which facilitates demolding during the production of the body. The inclination angle of the protruding rib is no more than 30°, which can ensure the sealing surface pressure at the position of the protruding rib and ensure the sealing effect of the sealing rib, thereby ensuring the sealing performance of the sealing element and avoiding fluid leakage problems in the multi-channel switching valve.

[0023] According to some embodiments of the present invention, the inner wall of the valve housing is formed with a receiving groove, a plurality of the flow holes are formed on the bottom wall of the receiving groove, and the sealing rib contacts the bottom wall of the receiving groove.

[0024] According to some alternative embodiments of the invention, the outer sidewall of the body contacts the inner sidewall of the receiving groove.

[0025] A vehicle thermal management system according to a third aspect of the present invention includes: a multi-channel switching valve as described in the second aspect of the present invention.

[0026] According to the thermal management system of the present invention, by setting the above-mentioned multi-channel switching valve, the outer rib is inclined towards the center of the adjacent body, which facilitates demolding during the production of the body and avoids severe deformation or deflection of the outer rib under force, thus ensuring the sealing performance of the seal. The inclination angle of the outer rib is not greater than 30°, which can ensure the sealing surface pressure at the position of the outer rib and ensure the sealing effect of the sealing rib, thereby further ensuring the sealing performance of the seal. When the seal is used in the multi-channel switching valve, the problem of fluid leakage in the multi-channel switching valve can be avoided.

[0027] A vehicle according to a fourth aspect of the present invention includes: a thermal management system as described in the third aspect of the present invention.

[0028] According to the vehicle of the present invention, by setting the above-mentioned thermal management system, the protruding ribs are inclined towards the center of the adjacent body, which facilitates demolding during the production of the body and avoids severe deformation or deflection of the protruding ribs under stress, thus ensuring the sealing performance of the seal. The inclination angle of the protruding ribs is not greater than 30°, which can ensure the sealing surface pressure at the position of the protruding ribs and ensure the sealing effect of the sealing ribs, thereby further ensuring the sealing performance of the seal. For example, when the seal is used in a multi-channel switching valve, the problem of fluid leakage in the multi-channel switching valve can be avoided.

[0029] 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

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0031] Figure 1 This is an exploded view of a multi-channel switching valve according to some embodiments of the present invention;

[0032] Figure 2 This is a cross-sectional view of a multi-channel switching valve according to some embodiments of the present invention;

[0033] Figure 3 yes Figure 1 Schematic diagram of the middle valve housing;

[0034] Figure 4 yes Figure 1 Schematic diagram of the middle valve core;

[0035] Figure 5 yes Figure 2 Schematic diagram of the middle sealing component;

[0036] Figure 6 yes Figure 5A cross-sectional view of the central sealing element, wherein the section line cuts along the first direction and passes through the clearance through hole;

[0037] Figure 7 yes Figure 6 Enlarged view of point A in the middle;

[0038] Figure 8 yes Figure 5 A cross-sectional view of the central sealing element, wherein the section line cuts along the first direction and does not pass through the clearance through hole;

[0039] Figure 9 This is a schematic diagram of the sealing element in Example 2.

[0040] Figure label:

[0041] 100. Multi-channel switching valve;

[0042] 1. Sealing element; 11. Body; 111. Clearance through hole; 112. First side; 113. Second side; 12. Sealing rib; 13. Outer rib; 14. First outer side wall; 141. Arc-shaped part; 142. Flat part; 143. First straight segment; 144. First arc segment; 15. Second outer side wall; 16. Connecting rib; 17. Friction-reducing layer; 18. Second arc segment;

[0043] 2. Valve housing; 21. Receiving groove; 24. Flow through hole; 241. Liquid inlet; 242. Liquid outlet;

[0044] 3. Valve core; 31. Switching channel; 32. Outlet; 4. Actuator; 5. Valve cover. Detailed Implementation

[0045] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0046] The sealing element 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0047] Reference Figures 5-9 According to a first aspect of the present invention, the sealing member 1 includes a body 11 and a plurality of sealing ribs 12, wherein at least one clearance through hole 111 is formed on the body 11. For example, six clearance through holes 111 are formed on the body 11 at intervals, and the clearance through holes 111 can be used for fluid flow, and the fluid flowing in the clearance through holes 111 can be water, antifreeze or other liquids.

[0048] Continue to refer to Figures 5-9Multiple sealing ribs 12 are provided on the first side 112 of the body 11, and at least some of the sealing ribs 12 are external ribs 13. The external ribs 13 are provided on the outer edge of the body 11 and extend circumferentially along the body 11. By providing multiple sealing ribs 12 on the first side 112 of the body 11, the sealing performance of the first side 112 of the body 11 can be enhanced, thereby enhancing the sealing performance of the seal 1. By providing external ribs 13 on the outer edge of the body 11 and extending circumferentially along the body 11, the sealing performance of the outer edge of the body 11 can be enhanced, and the deformation of the outer edge of the body 11 under force can be avoided, thus preventing the sealing effect of the seal 1 from being affected.

[0049] For example, refer to Figure 5 and Figure 9 A portion of the sealing ribs 12 extend along a first direction (refer to direction e3 in the attached figure), and the remaining portion of the sealing ribs 12 extends along a second direction (refer to direction e4 in the attached figure); a plurality of sealing ribs 12 extending along the first direction are provided on at least one side of the through hole 111 along the second direction, and a plurality of sealing ribs 12 extending along the second direction are provided on at least one side of the through hole 111 along the first direction; at least a portion of the sealing ribs 12 extending along the second direction are external ribs 13, which are provided on the outer edge of the body 11 and extend along the circumference of the body 11.

[0050] The body 11 can extend in an arc shape in a first direction. Outer ribs 13 are provided at opposite ends of the body 11 along the first direction. The outer ribs 13 can extend along a second direction, which is perpendicular to the first direction. For example, the first direction can be left-right, and the second direction can be up-down. The left end of the body 11 can have two outer ribs 13 extending along the second direction, and the right end of the body 11 can also have two outer ribs 13 extending along the second direction; for example, refer to... Figure 6 The protruding ribs 13 at the left and right ends of the main body 11 can be symmetrically arranged.

[0051] For example, refer to Figure 1 and Figure 5 The aforementioned sealing element 1 can be used in a multi-channel switching valve 100. The multi-channel switching valve 100 also includes a valve housing 2 and a valve core 3. The sealing element 1 can contact the valve housing 2. The first side 112 of the body 11 can be the side of the body 11 facing downwards, and the sealing rib 12 of the first side 112 of the body 11 contacts the inner wall of the valve housing 2, which can enhance the sealing effect between the body 11 and the valve housing 2. The second side 113 of the body 11 is arranged opposite to the first side 112 of the body 11. The second side 113 cooperates with the valve core 3, and the valve core 3 rotates relative to the sealing element 1.

[0052] For example, when the protruding rib 13 is not inclined towards the center of the body 11, the protrusion height of the protruding rib 13 is parallel to the normal direction of the body 11 at the location of the protruding rib 13. A positive vertical pressure can be generated between the protruding rib 13 and the valve shell 2, resulting in a large sealing surface pressure at the location of the protruding rib 13. However, since the protruding rib 13 of the body 11 is not inclined towards the direction adjacent to the center of the body 11, the body 11 faces difficulties in demolding during manufacturing, making production inconvenient. Furthermore, the protruding rib 13 is located on one side of the avoidance through hole 111. The fluid flowing within the avoidance through hole 111 exerts a certain force on the protruding rib 13. Due to the pressure of the fluid on the protruding rib 13, it is prone to severe deformation or deflection, making it difficult to guarantee the sealing performance of the seal 1. When the protruding rib 13 is inclined at too large an angle towards the direction adjacent to the center of the body 11, the sealing surface pressure at the location of the protruding rib 13 is easily reduced, affecting the sealing performance of the seal 1.

[0053] The protruding rib 13 is inclined towards the center of the adjacent body 11, and the inclination angle α of the protruding rib 13 is not greater than 30°. The center line of the protruding rib 13 along the protrusion height direction is the rib center line e1, and the normal of the body 11 at the location of the protruding rib 13 is the body normal e2. The angle between the rib center line e1 and the body normal e2 is the inclination angle α of the protruding rib 13. By inclining the protruding rib 13 towards the center of the adjacent body 11, the body 11 is easily demolded during production, which facilitates production and avoids severe deformation or deflection of the protruding rib 13 under the action of fluid. The inclination angle α of the protruding rib 13 being not greater than 30° ensures the sealing surface pressure at the location of the protruding rib 13, ensuring the sealing effect of the sealing rib 12, thereby ensuring the sealing performance of the sealing element 1.

[0054] For example, the outer contour of the cross-section of the protruding rib 13 includes a first arc segment 144, and the straight line connecting the center of the first arc segment 144 and the midpoint of the first arc segment 144 can be used as the center line e1 of the rib. When the body 11 is an arc-shaped plate, the outer contour of the cross-section of the body 11 is arc-shaped, and the outer contour of the cross-section of the body 11 includes a second arc segment 18. The straight line connecting the center of the first arc segment 144 and the center of the first arc segment 144 can be used as the normal line e2 of the body 11. The angle between the center line e1 of the rib and the normal line e2 of the body 11 is the inclination angle α of the protruding rib 13, and α is not greater than 30°.

[0055] For example, the seal 1 can be an elastic material, preferably rubber (e.g., EPDM rubber), so that the seal 1 has the characteristics of aging resistance, corrosion resistance, insulation and a wide applicable temperature range.

[0056] According to the embodiment of the present invention, the seal 1 is inclined towards the center of the adjacent body 11 by the outer protruding rib 13, which makes it easy to demold during the production of the body 11 and avoids severe deformation or deflection of the outer protruding rib 13 under force, thus ensuring the sealing performance of the seal 1. The inclination angle α of the outer protruding rib 13 is not greater than 30°, which can ensure the sealing surface pressure at the position of the outer protruding rib 13 and ensure the sealing effect of the sealing rib 12, thereby further ensuring the sealing performance of the seal 1. For example, when the seal 1 is used in a multi-channel switching valve 100, the problem of fluid leakage in the multi-channel switching valve 100 can be avoided.

[0057] According to some embodiments of the present invention, the protruding ribs 13 of the body 11 are not inclined towards the direction adjacent to the center of the body 11, or the inclination angle of the protruding ribs 13 towards the direction adjacent to the center of the body 11 is small, which makes the body 11 difficult to demold in terms of process, and inconvenient to produce; in addition, the fluid will exert a certain force on the protruding ribs 13, and the protruding ribs 13 are prone to severe deflection under force, which will affect the sealing performance of the seal 1. When the inclination angle of the protruding ribs 13 towards the direction adjacent to the center of the body 11 is too large, it is easy to cause a decrease in the sealing surface pressure at the position of the protruding ribs 13, which will affect the sealing performance of the seal 1. The inclination angle α of the protruding rib 13 is in the range of 12° to 23°. The inclination angle of the protruding rib 13 is not less than 12°, so that the inclination angle of the protruding rib 13 is not too small. This makes it easy for the body 11 to be demolded during the production process and avoids severe deformation or deflection of the protruding rib 13 under stress, thus ensuring the stability of the sealing rib 12. Furthermore, the inclination angle of the protruding rib 13 is not greater than 23°, so that the inclination angle α of the protruding rib 13 is not too large, thus ensuring the sealing surface pressure at the position of the protruding rib 13, thereby ensuring the sealing performance of the sealing element 1.

[0058] According to some embodiments of the present invention, when the number of protruding ribs 13 in the direction from the outer edge of the body 11 to the center of the body 11 is small, for example, if there is only one protruding rib 13, the sealing effect of the seal 1 is prone to gradually weakening under long-term compression and temperature changes. A single protruding rib 13 is insufficient to guarantee the sealing performance of the seal 1, and fluid leakage or cross-flow is likely to occur within the multi-channel switching valve 100. By arranging multiple protruding ribs 13 at intervals in the direction from the outer edge of the body 11 to the center of the body 11, multiple protruding ribs 13 can achieve a multi-layer sealing effect, which is beneficial to improving the overall static sealing effect of the seal 1, and the seal 1 can still maintain a good dynamic sealing effect under long-term compression and temperature changes. For example, referring to… Figures 5-9 In the direction from the outer edge of the body 11 to the center of the body 11, there are two outwardly protruding ribs 13 spaced apart.

[0059] For example, refer to Figure 9According to a specific embodiment of the present invention, the protruding rib 13 extends along a second direction. The portion of the protruding rib 13 located at the edge of the avoidance through hole 111 is relatively long. This portion of the protruding rib 13 is prone to severe deformation or deflection under stress, which can easily affect the sealing effect of the seal 1. Therefore, a connecting rib 16 can be provided between two adjacent protruding ribs 13. The connecting rib 16 can connect two adjacent protruding ribs 13. At least a portion of the connecting rib 16 contacts the body 11. The connecting rib 16, the protruding rib 13, and the body 11 can be integrally formed. The connecting rib 16 can enhance the connection strength between two adjacent sealing ribs 12, and the connecting rib 16 has a supporting effect on the two adjacent protruding ribs 13, making the protruding ribs 13 less prone to severe deformation or deflection, thereby enhancing the stability of the sealing ribs 12 and further enhancing the sealing performance of the seal 1, ensuring that the seal 1 has a better sealing effect.

[0060] According to some optional embodiments of the present invention, in the direction from the outer edge of the body 11 to the center of the body 11, two or three protruding ribs 13 are spaced apart, which can achieve a multiple sealing effect, which is beneficial to improving the overall static sealing effect of the seal 1, and the seal 1 can still maintain a good dynamic sealing effect under long-term compression and temperature change; in addition, it can avoid the problem of complex structure of the seal 1 caused by an excessive number of protruding ribs 13, which facilitates production. For example, refer to Figure 5 and Figure 6 In the direction from the outer edge of the body 11 to the center of the body 11, there are two outwardly protruding ribs 13 spaced apart.

[0061] Table 1

[0062] Number of protruding ribs Minimum surface pressure at the location of the protruding rib (simulation value) 1 0.46 MPa 2 0.73 MPa

[0063] For example, Table 1 shows a comparison of the minimum surface pressure (simulated value) at the location of the protruding ribs 13 when the number of protruding ribs 13 varies along the direction from the outer edge of the body 11 to the center of the body 11: In the direction from the outer edge of the body 11 to the center of the body 11, when there is only one protruding rib 13, the minimum surface pressure at the location of the protruding rib 13 is approximately 0.46 MPa; in the direction from the outer edge of the body 11 to the center of the body 11, when there are two protruding ribs 13, the minimum surface pressure at the location of the protruding rib 13 increases to approximately 0.73 MPa, an increase of approximately 58.7%, significantly improving the minimum surface pressure at the location of the protruding rib 13, thus increasing the sealing surface pressure at the location of the protruding rib 13 and enhancing the sealing effect of the seal 1. It should be noted that the minimum surface pressure is the minimum value of the surface pressure measured at different points at the location of the protruding rib 13, and the aforementioned sealing surface pressure can be understood as the minimum surface pressure at the location of the protruding rib 13.

[0064] Reference Figure 7According to some optional embodiments of the present invention, the inclination angle α1 of the inner rib 13 among two adjacent outer ribs 13 is not greater than the inclination angle α2 of the outer rib 13. For example, "outer" and "inner" refer to adjacent outer ribs 13. Among two adjacent outer ribs 13, the one furthest from the center of the body 11 is the outer rib 13, located outside the other rib 13; the one closest to the center of the body 11 is the inner rib 13, located inside the other rib 13. For example, the inclination angle α1 of the inner rib 13 among two adjacent outer ribs 13 may be less than the inclination angle α2 of the outer rib 13; or, the inclination angle α1 of the inner rib 13 among two adjacent outer ribs 13 may be equal to the inclination angle α2 of the outer rib 13.

[0065] For example, the outer protruding rib 13 is in contact with the inner wall of the valve body 2, and can be subjected to lateral compression from the valve body 2. When the inclination angle α2 of the outer protruding rib 13 is too small, the valve body 2 is prone to over-compressing the outer protruding rib 13, which can easily lead to severe deformation or deflection of the outer protruding rib 13, affecting the sealing performance of the seal 1. The inner protruding rib 13 is mainly subjected to the force of the fluid, and the force on the inner protruding rib 13 is smaller, making it less prone to severe deformation or deflection. Therefore, in order to avoid severe deformation of the outer protruding rib 13 under stress, the deflection angle α2 of the outer protruding rib 13 cannot be set too small; the deflection angle α1 of the inner protruding rib 13 can be set smaller to ensure the sealing surface pressure at the position of the outer protruding rib 13, thereby ensuring the sealing effect of the seal 1.

[0066] By ensuring that the inclination angle α1 of the inner outer rib 13 is not greater than the inclination angle α2 of the outer outer rib 13, the sealing surface pressure at the position of the outer rib 13 can be guaranteed while the sealing element 1 is easy to demold during the process, thereby ensuring the sealing effect of the sealing element 1.

[0067] Reference Figure 7In some optional embodiments of the present invention, the inclination angle α1 of the inner protruding rib 13 among two adjacent protruding ribs 13 can be smaller than the inclination angle α2 of the outer protruding rib 13. The difference between the inclination angle α2 of the outer protruding rib 13 and the inclination angle α1 of the inner protruding rib 13 is in the range of 2° to 10°. The relatively larger inclination angle α2 of the outer protruding rib 13 can prevent the outer protruding rib 13 from being excessively compressed and severely deformed, ensuring the stability of the protruding rib 13, thereby ensuring the sealing performance of the seal 1. The inclination angle α1 of the inner protruding rib 13 can be smaller than the inclination angle α2 of the outer protruding rib 13, and the difference between α1 and α2 is in the range of 2° to 10°, which can ensure the sealing surface pressure at the position of the protruding rib 13, thereby ensuring the sealing effect of the seal 1.

[0068] Reference Figure 7 According to some optional embodiments of the present invention, the outer contour line of the cross-section of the outer rib 13 includes a first arc segment 144, and the ratio of the absolute value of the difference in radius between the first arc segments 144 of two adjacent outer ribs 13 to the radius of the inner outer rib 13 is not greater than 0.25. For example, the radius of the first arc segment 144 of the outer outer rib 13 is R2, and the radius of the first arc segment 144 of the inner outer rib 13 is R1, where R1 and R2 satisfy: R1≤R2 or R2≤R1. A large difference between R1 and R2 will result in a significant difference in the sealing effect between two adjacent outer ribs 13, which is detrimental to ensuring the sealing effect of the seal 1 under long-term dynamic operation. By ensuring that the absolute value of the difference between the radii of the first arc segment 144 of two adjacent outer protruding ribs 13 is no greater than 0.25 with the radius of the inner outer protruding rib 13, the difference between R1 and R2 is small, thus making the sealing effect of the two adjacent outer protruding ribs 13 less different. This ensures the sealing effect of the outer protruding ribs 13, thereby ensuring the sealing effect of the seal 1, which is beneficial to ensuring the sealing effect of the seal 1 under long-term dynamic operation.

[0069] Reference Figure 7 In some optional embodiments of the present invention, the absolute value of the difference in radius between the first arc segment 144 of two adjacent protruding ribs 13 and the radius of the inner protruding rib 13 is not greater than 0.2, so that R1 and R2 are relatively small, thereby making the sealing effect of the two adjacent protruding ribs 13 relatively small, which can ensure the sealing effect of the protruding ribs 13, thereby ensuring the sealing effect of the sealing element 1, which is beneficial to ensuring the sealing effect of the sealing element 1 under long-term dynamic operation.

[0070] Reference Figure 7According to some embodiments of the present invention, the outer contour of the cross-section of the outer protruding rib 13 includes a first arc segment 144 and a first straight segment 143. The first arc segment 144 and the first straight segment 143 are connected, and the first straight segment 143 is tangent to the first arc segment 144, so that the first straight segment 143 and the first arc segment 144 are smoothly connected. This can prevent extrusion damage at the position of the outer protruding rib 13, which is beneficial to ensuring the sealing performance and service life of the seal 1.

[0071] Reference Figures 5-7 According to some embodiments of the present invention, the outermost outer wall surface of the outermost protruding rib 13 is a first outer wall surface 14, and the outer wall surface of the body 11 is a second outer wall surface 15. The first outer wall surface 14 and the second outer wall surface 15 are connected, so that the first outer wall surface 14 and the second outer wall surface 15 can be subjected to force evenly. The first outer wall surface 14 includes a connected arcuate portion 141 and a flat portion 142. The flat portion 142 is connected to the second outer wall surface 15 and is coplanar, so that the first outer wall surface 14 and the second outer wall surface 15 can be smoothly connected. This prevents compression damage at the location of the protruding rib 13, which is beneficial to ensuring the sealing performance and service life of the seal 1. For example, the outer contour line of the cross-section of the arcuate portion 141 is a first arc segment 144, and the outer contour line of the cross-section of the flat portion 142 is a first straight line segment 143.

[0072] Reference Figure 7 According to some embodiments of the present invention, the edge of the adjacent protruding rib 13 of the bypass through hole 111 is the outer edge of the hole, the distance between the outer edge of the hole and the outer edge of the body 11 is L, and the outer contour line of the cross-section of the protruding rib 13 includes a first arc segment 144, the radius of the first arc segment 144 is R, and the ratio of R to L is in the range of 0.1 to 0.18. If the radius R of the first arc segment 144 of the protruding rib 13 is too large, the contact area between the first arc segment 144 and other components (such as the inner wall of the valve housing 2) will be too large, which will easily cause the frictional torque of the sealing element 1 to be too large. For example, if the frictional torque of the sealing element 1 is large, it will easily lead to a large normal pressure of the sealing element 1 on the valve core 3, thereby causing excessive friction between the sealing element 1 and the valve core 3, which is not conducive to the movement of the valve core 3. If the radius R of the first arc segment 144 of the protruding rib 13 is too small, the contact area between the first arc segment 144 and other components (such as the inner wall of the valve body 2) will be too small, resulting in a low sealing surface pressure at the location of the protruding rib 13, making it difficult to guarantee the sealing effect of the seal 1. By using a ratio of R to L ranging from 0.1 to 0.18, it is possible to ensure that the seal 1 has appropriate frictional torque and sealing surface pressure, thereby guaranteeing the sealing effect of the protruding rib 13 and ensuring the sealing performance of the seal 1.

[0073] For example, the radius of the first arc segment 144 of the outer convex rib 13 located on the outside is R2, and the radius of the first arc segment 144 of the outer convex rib 13 located on the inside is R1. The ratio of R1 to L is in the range of 0.1 to 0.18.

[0074] Reference Figure 8 According to some embodiments of the present invention, a wear-resistant layer or a friction-reducing layer 17 is provided on a second side 113 of the body 11 opposite to the first side 112 of the body 11. The wear-resistant layer protects the body 11 and reduces wear on the body 11, thereby ensuring the service life of the seal 1. The friction-reducing layer 17 protects the body 11 and reduces friction, thereby reducing wear on the body 11 and ensuring the service life of the seal 1. For example, the second side 113 of the body 11 of the seal 1 may be the side facing the valve core 3. Under normal working conditions, the valve core 3 rotates relative to the seal 1. When the valve core 3 rotates, it easily wears the body 11, making it difficult to guarantee the sealing performance of the seal 1 and affecting its service life. By providing a wear-resistant layer or a friction-reducing layer 17 on the second side 113 of the body 11, the wear-resistant layer or the friction-reducing layer 17 contacts the valve core 3. During the rotation of the valve core 3, the wear-resistant layer or the friction-reducing layer 17 wears down, thereby reducing the wear of the valve core 3 on the body 11 and ensuring the sealing performance and service life of the seal 1.

[0075] The following reference Figures 5-9 A seal 1 according to an embodiment of the present invention is described.

[0076] Example 1,

[0077] Specifically, refer to Figures 5-8 In this embodiment, the seal 1 includes a body 11 and a plurality of sealing ribs 12. The body 11 may extend in an arc shape in a first direction. Six spaced-apart clearance holes 111 are formed on the body 11 for fluid flow.

[0078] The aforementioned sealing element 1 is used in a multi-channel switching valve 100. The multi-channel switching valve 100 also includes a valve housing 2 and a valve core 3. The sealing element 1 is disposed inside the valve housing 2 and contacts the valve housing 2. The first side 112 of the body 11 is the side of the body 11 facing downward. The second side 113 of the body 11 is disposed opposite to the first side 112 of the body 11. The second side 113 is provided with a wear-resistant layer or a friction-reducing layer 17. The second side 113 cooperates with the valve core 3, and the valve core 3 rotates relative to the sealing element 1.

[0079] Multiple sealing ribs 12 are provided on the first side 112 of the body 11. Some of the sealing ribs 12 extend along a first direction, and the remaining sealing ribs 12 extend along a second direction. Multiple sealing ribs 12 extending along the first direction are provided on at least one side of the through hole 111 along the second direction, and multiple sealing ribs 12 extending along the second direction are provided on at least one side of the through hole 111 along the first direction. At least some of the sealing ribs 12 extending along the second direction are external ribs 13, which are provided on the outer edge of the body 11 and extend circumferentially along the body 11. The external ribs 13 are provided at opposite ends of the body 11 along the first direction. The external ribs 13 can extend along the second direction, and in the direction from the outer edge of the body 11 to the center of the body 11, two external ribs 13 are spaced apart. The first direction can be a left-right direction, and the second direction can be a up-down direction.

[0080] The centerline of the protruding rib 13 along the height of its protrusion is called the rib centerline e1. The normal of the body 11 at the location of the rib 13 is called the body normal e2. The angle between the rib centerline e1 and the body normal e2 is the inclination angle α of the rib 13. The rib 13 is inclined towards the center of the adjacent body 11. The inclination angle α of the rib 13 ranges from 12° to 23°. The inclination angle α1 of the inner rib 13 is smaller than the inclination angle α2 of the outer rib 13. The difference between the inclination angle α2 of the outer rib 13 and the inclination angle α1 of the inner rib 13 ranges from 2° to 10°.

[0081] The outer contour of the cross-section of the protruding rib 13 includes a first arc segment 144 and a first straight segment 143, which are connected and tangent to each other. The radius of the first arc segment 144 of the outer protruding rib 13 is R2, and the radius of the first arc segment 144 of the inner protruding rib 13 is R1. The absolute value of the difference in radius between two adjacent first arc segments 144 of the protruding rib 13 is not greater than 0.2 than the radius R1 of the inner protruding rib 13. The edge of the adjacent protruding rib 13 that avoids the through hole 111 is the outer edge of the hole. The distance between the outer edge of the hole and the outer edge of the body 11 is L. The outer contour of the cross-section of the protruding rib 13 includes the first arc segment 144, which has a radius of R. The ratio of R to L ranges from 0.1 to 0.18.

[0082] The outermost outer wall surface of the outermost protruding rib 13 is the first outer wall surface 14, and the outer wall surface of the body 11 is the second outer wall surface 15. The first outer wall surface 14 and the second outer wall surface 15 are connected. The first outer wall surface 14 includes a connected arcuate part 141 and a flat part 142. The flat part 142 is connected to the second outer wall surface 15 and is coplanar.

[0083] Example 2,

[0084] Reference Figure 9 The structure of this embodiment is roughly the same as that of Embodiment 1, wherein the same components are referred to by the same reference numerals. The only difference is that, based on the structure of the protruding rib 13 in Embodiment 1, this embodiment provides a connecting rib 16 between two adjacent protruding ribs 13. The connecting rib 16 connects the two adjacent protruding ribs 13, and at least a part of the connecting rib 16 contacts the body 11.

[0085] By setting a connecting rib 16 between two adjacent outer protruding ribs 13, the connecting rib 16 can enhance the connection strength between two adjacent sealing ribs 12, and the connecting rib 16 has a supporting effect on the two adjacent outer protruding ribs 13, making the outer protruding ribs 13 less prone to severe deformation or deflection, thereby enhancing the stability of the sealing ribs 12, and further enhancing the sealing performance of the sealing element 1, ensuring that the sealing element 1 has a good sealing effect.

[0086] Reference Figure 1 and Figure 2 According to a second aspect embodiment of the present invention, a multi-channel switching valve 100 includes: a valve housing 2, a valve core 3, and a seal 1. The valve housing 2 is provided with a plurality of (e.g., six) spaced-apart flow holes 24. The valve core 3 is movably disposed within the valve housing 2 and is provided with at least one switching channel 31. The switching channel 31 communicates with two of the flow holes 24 to facilitate fluid flow. Fluid can flow into the switching channel 31 through one of the flow holes 24 and flow from the switching channel 34 to the other flow hole 24, allowing fluid to enter the interior of the multi-channel switching valve 100 through the flow holes 24 and exit the interior of the multi-channel switching valve 100. By moving the valve core 3 to switch the communication between the switching channel 31 and different flow holes 24, the multi-channel switching valve 100 can have different operating modes, enabling the multi-channel switching valve 100 to switch between multiple operating modes and to control different flow rates.

[0087] Continue to refer to Figure 1 and Figure 2The sealing element 1 is a sealing element 1 according to the first aspect embodiment of the present invention. Multiple clearance through holes 111 are provided for fluid flow. The sealing element 1 is disposed within the valve housing 2. The multiple clearance through holes 111 are connected to multiple flow through holes 24 in a one-to-one correspondence. Fluid flowing through the flow through holes 24 can flow into the clearance through holes 111, and fluid flowing through the clearance through holes 111 can also flow into the flow through holes 24. For example, referring to… Figure 1 There are six flow through holes 24, and the number of avoidance through holes 111 is the same as that of flow through holes 24 and they are connected one by one to form six flow channels. Part of the sealing rib 12 of the seal 1 is located on the outer periphery of the avoidance through hole 111 and extends along the circumference of the avoidance through hole 111. It can divide the six flow channels into six separate flow channels. The sealing rib 12 can seal a single flow channel.

[0088] Reference Figure 2 The sealing rib 12 contacts the inner wall of the valve body 2. The sealing rib 12 can play a sealing role. For example, the sealing rib 12 can seal the outer peripheral side of the flow through hole 24. When multiple avoidance holes 111 are connected to multiple flow through holes 24 one by one to form multiple flow channels, the sealing rib 12 can prevent the fluid in a single flow channel from leaking to other positions in the valve body and prevent the fluid in multiple flow channels from flowing across each other, so as to ensure that the multi-channel switching valve 100 can work normally. The second side 113 of the body 11 contacts the valve core 3, so that when the switching channel 31 in the valve core 3 is connected to the avoidance hole 111, the outer peripheral side of the avoidance hole 111 is in a sealed state, preventing the fluid flowing through the switching channel 31 and the avoidance hole 111 from leaking to other positions in the valve body and preventing the fluid in multiple avoidance holes 111 from flowing across each other, so as to ensure that the multi-channel switching valve 100 can work normally.

[0089] For example, refer to Figure 2 The sealing element 1 is located between the valve housing 2 and the valve core 3. The first side 112 of the body 11 faces the valve housing 2, and multiple sealing ribs 12 are provided on the first side 112 of the body 11. The second side 113 of the body 11 faces the valve core 3, and the second side 113 of the body 11 can be press-fitted with the valve core 3. The valve core 3 can squeeze the sealing element 1, so that the sealing ribs 12 contact the inner wall of the valve housing 2, thereby enhancing the structural stability of the sealing element 1 and realizing the sealing function of the sealing element 1. Among them, some of the sealing ribs 12 are located on the outer peripheral side of the avoidance through hole 111 and extend circumferentially along the avoidance through hole 111. By contacting the inner wall of the valve housing 2 with the sealing ribs 12, the outer peripheral side of the avoidance through hole 111 can be sealed, preventing fluid from flowing from the edge of the avoidance through hole 111 to other avoidance through holes 111, so as to ensure that the multi-channel switching valve 100 can work normally.

[0090] For example, refer to Figure 1The multi-channel switching valve 100 also includes an actuator 4 and a valve cover 5. The actuator 4 is located at one end of the valve housing 2 and is poweredly connected to the valve core 3. The valve cover 5 is located at the other end of the valve housing 2. The actuator 4 consists of a motor, a reduction gear set, and a control circuit board. When the multi-channel switching valve 100 is not working, the flow passage 24 is not connected to the switching channel 31. When the multi-channel switching valve 100 is working, the actuator 4 drives the valve core 3 to rotate. After the valve core 3 rotates through a certain angle, its switching channel 31 begins to connect with two of the flow passages 24. As the valve core 3 continues to rotate, the area of ​​the connection between the switching channel 31 and the flow passage 24 gradually increases, and the flow rate of the fluid that can pass through it also increases, thus enabling the multi-channel switching valve 100 to control different flow rates.

[0091] For example, the temperature of the fluid flowing through multiple flow holes 24 can be different, and the components through which the fluid flows through multiple flow holes 24 can also be different. (Refer to...) Figure 3 The valve housing 2 is provided with six flow holes 24, two of which can be used as liquid inlet holes 241 and the other four flow holes 24 can be used as liquid outlet holes 242. Different liquid outlet holes 242 can correspond to different components, and fluid can flow to different components through different liquid outlet holes 242.

[0092] For example, the valve core 3 can have two switching channels 31. By rotating the valve core 3, the inlet of one switching channel 31 can be connected to one inlet port 241, and the outlet 32 ​​of the switching channel 31 can be connected to one outlet port 242. The fluid flowing into this switching channel 31 can flow to the component corresponding to the outlet port 242. At the same time, the other switching channel 31 of the valve core 3 can be connected to another inlet port 241 and another outlet port 242. The fluid in this switching channel 31 can flow to the component corresponding to the outlet port 242. The temperature of the fluid entering the switching channel 31 through different inlets is different, which allows the multi-channel switching valve 100 to have different operating modes.

[0093] For example, the valve core 3 may have a switching channel 31. When a component connected to one of the outlet holes 242 needs to be cooled, the valve core 3 can be rotated to connect the inlet of the switching channel 31 with the flow hole 24 for lower-temperature fluid, and the outlet 32 ​​of the switching channel 31 with one of the outlet holes 242. Fluid can flow from the inlet hole 241 into the switching channel 31 and from the switching channel 31 into the outlet hole 242, flowing through the outlet hole 242 to the corresponding component and cooling it. When a component connected to one of the outlet holes 242 needs to be heated, the valve core 3 can be rotated to connect the inlet of the switching channel 31 with the inlet hole 241 for higher-temperature fluid, and the outlet 32 ​​of the switching channel 31 with one of the outlet holes 242. Fluid can flow from the inlet hole 241 into the switching channel 31 and from the switching channel 31 into the outlet hole 242, flowing through the outlet hole 242 to the corresponding component and heating it, thereby enabling the multi-channel switching valve 100 to switch between multiple operating modes.

[0094] According to an embodiment of the present invention, the multi-channel switching valve 100 has the aforementioned sealing element 1 provided on it. The outer protruding rib 13 is inclined towards the center of the adjacent body 11, which facilitates demolding during the production of the body 11 and avoids severe deformation or deflection of the outer protruding rib 13 under stress, thus ensuring the sealing performance of the sealing element 1. The inclination angle α of the outer protruding rib 13 is not greater than 30°, which can ensure the sealing surface pressure at the position of the outer protruding rib 13 and ensure the sealing effect of the sealing rib 12, thereby further ensuring the sealing performance of the sealing element 1 and avoiding fluid leakage problems in the multi-channel switching valve 100.

[0095] Reference Figure 3 According to some embodiments of the present invention, the inner wall of the valve housing 2 is formed with a receiving groove 21, and a plurality of flow holes 24 are formed on the bottom wall of the receiving groove 21. The sealing member 1 can be disposed in the receiving groove 21, and a plurality of clearance holes 111 are connected to the plurality of flow holes 24 in a one-to-one correspondence. The sealing rib 12 contacts the bottom wall of the receiving groove 21 and can play a sealing role. For example, the sealing rib 12 can seal the outer peripheral side of the flow hole 24. When the plurality of clearance holes 111 are connected to the plurality of flow holes 24 in a one-to-one correspondence to form a plurality of flow channels, the sealing rib 12 can seal a single flow channel to prevent the fluid in the single flow channel from leaking to other positions in the valve body and to prevent the fluid in the multiple flow channels from flowing across each other, so as to ensure that the multi-channel switching valve 100 can work normally.

[0096] According to some optional embodiments of the present invention, the outer side wall of the body 11 contacts the inner side wall of the receiving groove 21. The inner side wall of the receiving groove 21 can limit the sealing element 1, preventing the sealing element 1 from moving when the valve core 3 moves, which helps to ensure the sealing effect of the sealing element 1. Furthermore, by having the outer side wall of the body 11 contact the inner side wall of the receiving groove 21, no other limiting structure is needed on the valve body to fix the sealing element 1, making the overall structure simpler.

[0097] A vehicle thermal management system according to a third aspect of the present invention includes a multi-channel switching valve 100 according to the second aspect of the present invention described above.

[0098] According to the thermal management system of the present invention, by setting the multi-channel switching valve 100 as described above, the outer protruding rib 13 is inclined towards the center of the adjacent body 11, which facilitates demolding during the production of the body 11 and avoids severe deformation or deflection of the outer protruding rib 13 under stress, thus ensuring the sealing performance of the seal 1. The inclination angle α of the outer protruding rib 13 is not greater than 30°, which can ensure the sealing surface pressure at the position of the outer protruding rib 13 and ensure the sealing effect of the sealing rib 12, thereby further ensuring the sealing performance of the seal 1. When the seal 1 is used in the multi-channel switching valve 100, the problem of fluid leakage in the multi-channel switching valve 100 can be avoided.

[0099] A vehicle according to a fourth aspect of the present invention includes: a thermal management system according to the third aspect of the present invention described above.

[0100] According to the vehicle of the present invention, by setting the above-mentioned thermal management system, the outer protruding rib 13 is inclined towards the center of the adjacent body 11, which makes it easy to demold during the production of the body 11 and avoids severe deformation or deflection of the outer protruding rib 13 under force, thus ensuring the sealing performance of the seal 1. The inclination angle α of the outer protruding rib 13 is not greater than 30°, which can ensure the sealing surface pressure at the position of the outer protruding rib 13 and ensure the sealing effect of the sealing rib 12, thereby further ensuring the sealing performance of the seal 1. For example, when the seal 1 is used in the multi-channel switching valve 100, the problem of fluid leakage in the multi-channel switching valve 100 can be avoided.

[0101] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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.

[0102] In the description of this invention, "a plurality of" means two or more.

[0103] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0104] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the 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.

[0106] 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 multi-channel switching valve, characterized in that, include: The valve housing has a plurality of spaced-apart flow holes. A valve core is movably disposed within the valve housing. The valve core is provided with at least one switching channel, which communicates with two of the flow through holes. The valve core is moved to switch the switching channel to communicate with different flow through holes. A sealing element is disposed within the valve housing. The sealing element includes a body and multiple sealing ribs. At least one clearance through hole is formed on the body, and multiple clearance through holes are used for fluid flow. The multiple clearance through holes are connected to multiple flow through holes in a one-to-one correspondence. The multiple sealing ribs are disposed on a first side of the body and contact the inner wall of the valve housing. The second side of the body contacts the valve core. At least a portion of the sealing ribs are external ribs. The external ribs are disposed on the outer edge of the body and extend circumferentially along the body. The external ribs are inclined towards the center of the body, and the inclination angle of the external ribs is not greater than 30°. The centerline of the external rib along the protrusion height direction is the rib centerline. The normal of the body at the location of the external rib is the body normal. The angle between the rib centerline and the body normal is the inclination angle of the external rib.

2. The multi-channel switching valve according to claim 1, characterized in that, The inclination angle of the outwardly protruding rib is in the range of 12° to 23°.

3. The multi-channel switching valve according to claim 1, characterized in that, The protruding ribs are arranged in multiple spaced intervals along the direction from the outer edge of the body to the center of the body.

4. The multi-channel switching valve according to claim 3, characterized in that, In the direction from the outer edge of the body to the center of the body, the protruding ribs are arranged in two or three spaced apart.

5. The multi-channel switching valve according to claim 3, characterized in that, The inclination angle of the inner rib among two adjacent protruding ribs is not greater than the inclination angle of the outer rib. The outer rib is relatively farther away from the center of the body among two adjacent protruding ribs, and the inner rib is relatively closer to the center of the body among two adjacent protruding ribs.

6. The multi-channel switching valve according to claim 5, characterized in that, The difference between the inclination angle of the outermost rib and the inclination angle of the innermost rib in two adjacent ribs is in the range of 2° to 10°.

7. The multi-channel switching valve according to claim 3, characterized in that, The outer contour of the cross-section of the protruding rib includes a first arc segment, and the absolute value of the difference in radius between the first arc segments of two adjacent protruding ribs is not greater than 0.25 compared with the radius of the protruding rib located on the inner side.

8. The multi-channel switching valve according to claim 7, characterized in that, The absolute value of the difference in radius between the first arc segments of two adjacent protruding ribs is not greater than 0.2 compared to the radius of the protruding rib located on the inner side.

9. The multi-channel switching valve according to claim 1, characterized in that, The outer contour of the cross-section of the protruding rib includes a first circular arc segment and a first straight line segment connected together, wherein the first straight line segment is tangent to the first circular arc segment.

10. The multi-channel switching valve according to claim 1, characterized in that, The outermost outer wall surface of the outermost protruding rib is the first outer wall surface, and the outer wall surface of the body is the second outer wall surface. The first outer wall surface and the second outer wall surface are connected. The first outer wall surface includes a connected arcuate portion and a flat portion, and the flat portion is connected to and coplanar with the second outer wall surface.

11. The multi-channel switching valve according to claim 1, characterized in that, The edge of the bypass through hole adjacent to the protruding rib is the outer edge of the hole, the distance between the outer edge of the hole and the outer edge of the body is L, the outer contour line of the cross section of the protruding rib includes a first arc segment, the radius of the first arc segment is R, and the ratio of R to L is in the range of 0.1~0.

18.

12. The multi-channel switching valve according to claim 1, characterized in that, The body extends in an arc shape in a first direction, the protruding ribs are located at opposite ends of the body along the first direction, and the protruding ribs extend along a second direction, which is perpendicular to the first direction.

13. The multi-channel switching valve according to any one of claims 1-12, characterized in that, The second side of the body, which is disposed opposite to the first side of the body, is provided with a wear-resistant layer or a wear-reducing layer.

14. The multi-channel switching valve according to claim 1, characterized in that, The inner wall of the valve housing has a receiving groove, and a plurality of flow holes are formed on the bottom wall of the receiving groove. The sealing rib contacts the bottom wall of the receiving groove.

15. The multi-channel switching valve according to claim 14, characterized in that, The outer wall of the body contacts the inner wall of the receiving groove.

16. A thermal management system for a vehicle, characterized in that, include: The multi-channel switching valve according to any one of claims 1-15.

17. A vehicle, characterized in that, include: The thermal management system according to claim 16.

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