Valve core, multi-way valve, thermal management system, and vehicle

Abstract

The application discloses a valve core, a multi-way valve, a thermal management system and a vehicle. The sealing convex ribs of the valve core include first sealing convex ribs and / or second sealing convex ribs. The radius of a first transition wall of the first sealing convex ribs is R1, the radius of a second transition wall is R2, R1 / (L11+L12) is greater than or equal to 0.07 and / or R2 / (L11+L12) is greater than or equal to 0.07. The radius of a third transition wall of the second sealing convex ribs is R3, and R3 / (L11+L12) is greater than or equal to 0.07. According to the valve core, the close sealing performance between the valve core and the shell can be improved.

Description

Technical Field

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

[0002] Multi-way valves typically achieve switching and connection through the movement of a valve core within the housing. The contact area between the valve core and the housing affects the sealing performance between them, placing higher demands on the seal between the valve body and the housing. Therefore, the sealing performance between the valve core and the housing needs further improvement. 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 proposes a valve core that enables the sealing ribs to form a relatively uniform contact sealing surface pressure with the inner wall of the housing, thereby improving the tight sealing performance between the valve core and the housing.

[0004] The present invention also proposes a multi-way valve having the above-mentioned valve core.

[0005] The present invention also proposes a thermal management system having the above-mentioned multi-way 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 valve core includes: a body defining at least one switching flow channel, each switching flow channel having a communication port; and a sealing rib protruding from the surface of the body, the sealing rib including: a first sealing rib surrounding the communication port, the outer peripheral wall of the first sealing rib including a first sidewall and a first transition wall, the first sidewall being a plurality of such sidewalls, a first transition wall being provided between adjacent two first sidewalls, the inner peripheral wall of the first sealing rib including a second sidewall and a second transition wall, the second sidewall being a plurality of such sidewalls, a second transition wall being provided between adjacent two second sidewalls, the radius of the first transition wall being R1, the radius of the second transition wall being R2, R1 / (L11+L12)≥0.07 and / or R2 / (L21+L22)≥0.07, L11 being the minimum of the lengths of the two adjacent first sidewalls corresponding to the first transition wall, and L12 being the length of the two first transition walls at both ends of the first sidewall corresponding to L11 in the first transition wall. The sum of lengths in the direction, wherein the first direction is the length direction of the first sidewall corresponding to L11, L21 is the minimum length of the two adjacent second sidewalls corresponding to the second transition wall, L22 is the sum of the lengths of the two second transition walls at both ends of the second sidewall corresponding to L21 in the second direction, and the second direction is the length direction of the second sidewall corresponding to L21; and / or, a second sealing rib, wherein the second sealing rib is disposed between two adjacent communicating openings, the outer peripheral wall of the second sealing rib includes a third sidewall and a third transition wall, wherein there are multiple third sidewalls, and a third transition wall is disposed between two adjacent third sidewalls, the radius of the third transition wall is R3, R3 / (L31+L32)≥0.07, L31 is the minimum length of the two adjacent third sidewalls corresponding to the third transition wall, and L32 is the sum of the lengths of the two third transition walls at both ends of the third sidewall corresponding to L31 in the third direction, and the third direction is the length direction of the third sidewall corresponding to L31.

[0008] According to an embodiment of the present invention, the valve core, by means of a first sealing rib satisfying: R1 / (L11+L12)≥0.07 and / or R2 / (L21+L22)≥0.07, allows the corner portions of the first sealing rib to better contact the inner wall of the housing, thereby making the contact sealing surface pressure between the first sealing rib and the inner wall of the housing more uniform, so as to achieve a tight seal between the valve core and the housing and avoid the risk of leakage due to a large difference in the contact sealing surface pressure between the valve core and the inner wall of the housing in some areas; and / or, by means of a second sealing rib satisfying: R3 / (L31+L32)≥0.07, allows the corresponding corner portions of the second sealing rib to better contact the inner wall of the housing, thereby making the contact sealing surface pressure distribution between the second sealing rib and the inner wall of the housing more uniform, so as to achieve a tight seal between the valve core and the housing and avoid the risk of leakage due to uneven distribution of the contact sealing surface pressure between the second sealing rib and the inner wall of the housing.

[0009] In some embodiments, the sealing rib includes a first sealing rib, 0.15≤R1 / (L11+L12)≤0.3, and / or, R2 / (L21+L22)≤0.2.

[0010] In some embodiments, 0.2 ≤ R1 / (L11+L12) ≤ 0.27.

[0011] In some embodiments, the sealing rib includes a first sealing rib with 0.07≤R2 / (L21+L22)≤0.2 and / or 0.1≤R2 / (L21+L22)≤0.18.

[0012] In some embodiments, 0.1 ≤ R2 / (L21+L22) ≤ 0.18.

[0013] In some embodiments, the sealing rib includes a first sealing rib, the body includes a cylindrical portion, the switching channel is located inside the cylindrical portion, the connecting port is formed on the peripheral wall of the cylindrical portion, the first sealing rib is formed as a square annular structure, and the width direction of the first sealing rib is parallel to the axial direction of the cylindrical portion, (L11+L12) is the dimension of the outer peripheral wall of the first sealing rib in the axial direction of the cylindrical portion, and (L21+L22) is the dimension of the inner peripheral wall of the first sealing rib in the axial direction of the cylindrical portion.

[0014] In some embodiments, the sealing rib includes a second sealing rib, where 0.15≤R3 / (L31+L32)≤0.3.

[0015] In some embodiments, 0.2 ≤ R3 / (L31+L32) ≤ 0.27.

[0016] In some embodiments, the sealing rib includes a second sealing rib, and at least one groove is formed on the side of the second sealing rib facing away from the body. The peripheral wall of the groove includes a fourth side wall and a fourth transition wall. There are multiple fourth side walls, and a fourth transition wall is provided between two adjacent fourth side walls. The radius of the fourth transition wall is R4, R4 / (L41+L42)≥0.07, where L41 is the minimum length of the two adjacent fourth side walls corresponding to the fourth transition wall, and L42 is the sum of the lengths of the two fourth transition walls at both ends of the fourth side wall corresponding to L41 in a fourth direction. The fourth direction is the length direction of the fourth side wall corresponding to L41.

[0017] In some embodiments, R4 / (L41+L42)≤0.2.

[0018] In some embodiments, 0.1 ≤ R4 / (L41+L42) ≤ 0.18.

[0019] In some embodiments, a plurality of grooves spaced apart along a fifth direction constitute a groove group, wherein, in the fifth direction, the radius of the fourth transition wall at the ends of the two outermost grooves of the groove group that are far apart from each other is R41, and the radius of the remaining fourth transition walls of the groove group is R42, where R41 < R42.

[0020] In some embodiments, the sealing rib includes a second sealing rib, the body includes a cylindrical portion, the switching channel is located inside the cylindrical portion, the connecting port is formed on the peripheral wall of the cylindrical portion, the second sealing rib is formed as a square annular structure, and the width direction of the second sealing rib is parallel to the axial direction of the cylindrical portion, (L31+L32) is the dimension of the outer peripheral wall of the second sealing rib in the axial direction of the cylindrical portion, and (L41+L42) is the dimension of the peripheral wall of the groove in the axial direction of the cylindrical portion.

[0021] In some embodiments, the sealing rib includes a first sealing rib and a second sealing rib, the body defines a plurality of switching channels, the plurality of switching channels include a first switching channel and a second switching channel spaced apart, the first sealing rib is disposed around the communication port of the first switching channel, and the second sealing rib is disposed between two adjacent communication ports of the second switching channel.

[0022] A multi-way valve according to a second aspect of the present invention includes a housing and a valve core according to the second aspect of the present invention described above. The housing is provided with a flow passage, the valve core is movably disposed within the housing, and the switching flow channel is adapted to communicate with the corresponding flow passage.

[0023] According to an embodiment of the present invention, the sealing performance of the multi-way valve can be improved by using the valve core described above.

[0024] In some embodiments, there are at least three flow holes, and the switching channel is configured such that different flow holes are switched to be connected.

[0025] In some embodiments, the multi-way valve further includes a seal located between the inner wall of the housing and the valve core. The seal has clearance holes formed on it, which correspond one-to-one with the flow passage holes. The seal includes a sealing portion and a wear-resistant portion, with the wear-resistant portion located on the side surface of the sealing portion facing the sealing rib.

[0026] According to a third aspect of the present invention, a thermal management system includes: a manifold having a plurality of flow channels for a circulating medium; a multi-way valve, which is a multi-way valve according to the second aspect of the present invention described above, the multi-way valve being disposed on the manifold, the plurality of flow channels being respectively connected to a plurality of flow holes, and the valve core rotating to control the switching of the plurality of flow channels to control the thermal management system to switch modes.

[0027] 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.

[0028] The vehicle according to an embodiment of the present invention improves its overall performance by employing the above-described thermal management system.

[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 a schematic diagram of a valve core according to some embodiments of the present invention;

[0032] Figure 2 yes Figure 1 A schematic diagram of the first sealing rib shown;

[0033] Figure 3 yes Figure 1 A schematic diagram of the second sealing rib shown;

[0034] Figure 4 This is another schematic diagram of a second sealing rib according to some embodiments of the present invention, wherein the second sealing rib forms two grooves;

[0035] Figure 5 This is another schematic diagram of the second sealing rib according to some embodiments of the present invention, wherein the second sealing rib does not have a groove formed;

[0036] Figure 6 This is another schematic diagram of a second sealing rib according to some embodiments of the present invention, wherein the second sealing rib is formed with a groove;

[0037] Figure 7 yes Figure 1 Another schematic diagram of the valve core shown;

[0038] Figure 8 yes Figure 1 The cross-sectional view of the valve core shown;

[0039] Figure 9 This is an exploded view of a multi-way valve according to some embodiments of the present invention;

[0040] Figure 10 yes Figure 9 A schematic diagram of the seal shown;

[0041] Figure 11 yes Figure 9 A schematic diagram of the casing shown;

[0042] Figure 12 This is a cross-sectional view of a multi-way valve according to some embodiments of the present invention;

[0043] Figure 13 This is another schematic diagram of a valve core according to some embodiments of the present invention;

[0044] Figure 14 This is another cross-sectional view of a multi-way valve according to some embodiments of the present invention;

[0045] Figure 15 This is yet another cross-sectional view of a multi-way valve according to some embodiments of the present invention;

[0046] Figure 16 This is another cross-sectional view of a multi-way valve according to some embodiments of the present invention;

[0047] Figure 17 This is yet another cross-sectional view of a multi-way valve according to some embodiments of the present invention;

[0048] Figure 18 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0049] Figure label:

[0050] Vehicle 1000, thermal management system 300, multi-way valve 200, housing 101, flow through hole 101a, first flow through hole 1011, second flow through hole 1012, third flow through hole 1013, fourth flow through hole 1014, fifth flow through hole 1015, assembly cavity 101b, inner wall of housing 101c, seal 102, clearance hole 102a, sealing part 1021, wear-resistant part 1022, cover plate 103, drive component 104.

[0051] Valve core 100

[0052] Body 1, First switching channel 1a, Second switching channel 1b, Connecting port 1c, First connecting port 1f, Second connecting port 1g, Groove 1d,

[0053] Sealing rib 2, first sealing rib 21, first sidewall 211a, first transition wall 211b, second sidewall 212a, second transition wall 212b

[0054] Second sealing rib 22, third side wall 221a, third transition wall 221b, fourth side wall 222a, and fourth transition wall 222b. Detailed Implementation

[0055] 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.

[0056] 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.

[0057] Hereinafter, with reference to the accompanying drawings, a valve core 100 according to an embodiment of the present invention will be described, the valve core 100 being adapted to be movably disposed within a housing 101.

[0058] like Figures 1-7 and Figure 11As shown, the valve core 100 includes a body 1 and a sealing rib 2. The body 1 defines at least one switching flow channel, each switching flow channel having a communication port 1c. The sealing rib 2 protrudes from the surface of the body 1 and includes a first sealing rib 21 and / or a second sealing rib 22. It is understood that when the valve core 100 is used in a valve body (e.g., a multi-way valve 200), the sealing rib 2 is used to achieve a seal between the valve core 100 and other components of the valve body. In the following description of this application, the sealing rib 2 is used to achieve a seal between the valve core 100 and the housing 101 as an example. Those skilled in the art will readily understand, after reading the following technical solution, that the sealing rib 2 is used to achieve a seal between the valve core 100 and other components such as the seal 102.

[0059] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. In formulas, the character " / " represents the preceding object divided by the following object.

[0060] When the sealing rib 2 includes a first sealing rib 21 (the sealing rib 2 includes the first sealing rib 21 but does not include the second sealing rib 22, or the sealing rib 2 includes the first sealing rib 21 and the second sealing rib 22), the first sealing rib 21 is arranged around the communication port 1c. The outer peripheral wall of the first sealing rib 21 includes a first side wall 211a and a first transition wall 211b. There are multiple first side walls 211a. A first transition wall 211b is provided between two adjacent first side walls 211a to realize the transition connection between two adjacent first side walls 211a. The inner peripheral wall of the first sealing rib 21 includes a second side wall 212a and a second transition wall 212b. There are multiple second side walls 212a. A second transition wall 212b is provided between two adjacent second side walls 212a to realize the transition connection between two adjacent second side walls 212a.

[0061] Wherein, the radius of the first transition wall 211b is R1, the radius of the second transition wall 212b is R2, and R1 / (L11+L12)≥0.07 and / or R2 / (L21+L22)≥0.07, that is, the arrangement of the first transition wall 211b and the second transition wall 212b satisfies at least one of R1 / (L11+L12)≥0.07 and R2 / (L21+L22)≥0.07; L11 is the minimum value of the lengths of the two adjacent first sidewalls 211a corresponding to the first transition wall 211b, L... 12 is the sum of the lengths of the two first transition walls 211b at both ends of the first sidewall 211a corresponding to L11 in the first direction, where the first direction is the length direction of the first sidewall 211a corresponding to L11; L21 is the minimum length of the two adjacent second sidewalls 212a corresponding to the second transition wall 212b; and L22 is the sum of the lengths of the two second transition walls 212b at both ends of the second sidewall 212a corresponding to L21 in the second direction, where the second direction is the length direction of the second sidewall 212a corresponding to L21.

[0062] The first transition wall 211b allows for a reasonable transition between two adjacent first sidewalls 211a, and the second transition wall 212b allows for a reasonable transition between two adjacent second sidewalls 212a. When the valve core 100 is used in the valve body, the first sealing rib 21 contacts the corresponding wall surface of the housing 101, and the first transition wall 211b and / or the second transition wall 212b can better contact the inner wall 101c of the housing. This allows the corner portion of the first sealing rib 21 corresponding to the first transition wall 211b to better contact the inner wall 101c of the housing, and / or the corner portion of the first sealing rib 21 corresponding to the second transition wall 212b to better contact the inner wall 101c of the housing. That is, each portion of the first sealing rib 21 corresponding to the portion between the first transition wall 211b and the second transition wall 212b on the side surface facing away from the body 1 better contacts the inner wall 101c of the housing, so that the first sealing rib 21 corresponding to the first... The portion between transition wall 211b and the second transition wall 212b forms a relatively consistent and tight contact with the inner wall 101c of the housing. This makes the contact sealing surface pressure distribution between the surface of the first sealing rib 21 facing away from the main body 1 and the inner wall 101c of the housing more uniform. That is, the contact sealing surface pressure between the corresponding corners of the first transition wall 211b and the second transition wall 212b and the inner wall 101c of the housing is less different from that between the remaining portion of the first sealing rib 21 (the corresponding portion between the first side wall 211a and the second side wall 212a) and the inner wall 101c of the housing, and is relatively close to being consistent. This enhances the sealing effect at the corresponding connection port 1c of the first sealing rib 21, so as to achieve a tight seal between the valve core 100 and the housing 101 and avoid the risk of leakage due to uneven distribution of contact sealing surface pressure between the first sealing rib 21 and the inner wall 101c of the housing.

[0063] Optionally, R1 / (L11+L12) can be 0.07, 0.08, 0.09, 0.1, or 0.11, etc.; R2 / (L21+L22) can be 0.07, 0.08, 0.09, 0.1, or 0.11, etc.

[0064] The inventors discovered that when the radius R1 of the first transition wall 211b or the radius R2 of the second transition wall 212b is too small, it is not conducive to forming a contact area with consistent contact sealing surface pressure between the corresponding corner portions of the first transition wall 211b and the second transition wall 212b and the inner wall 101c of the housing. Specifically, the contact surface pressure between the center portion of the corresponding corner portion of the first transition wall 211b and the second transition wall 212b and the inner wall 101c of the housing differs significantly from the contact surface pressure between the edge portion of the corresponding corner portion of the first transition wall 211b and the second transition wall 212b and the inner wall 101c of the housing. Alternatively, the contact surface pressure between the center portion of the corresponding corner portion of the first transition wall 211b and the second transition wall 212b and the inner wall 101c of the housing differs from the contact surface pressure between the corresponding portion of the first sidewall 211a and the second sidewall 212a and the inner wall 101c of the housing. The large difference in surface pressure leads to uneven contact sealing surface pressure between the first sealing rib 21 and the inner wall 101c of the housing, which easily leads to the risk of leakage. When the radius R1 of the first transition wall or the radius R2 of the second transition wall 212b is too large, it is easy to cause the width of the corresponding corner between the first transition wall 211b and the second transition wall 212b to increase, thus occupying too much of the opening area of ​​the connecting port 1c. This can easily cause interference between the corresponding corner between the first transition wall 211b and the second transition wall 212b and the peripheral wall of the connecting port 1c, affecting the flow rate of the connecting port 1c. In addition, the increase in the width of the corresponding corner between the first transition wall and the second transition wall 212b will increase the contact area between the first sealing rib 21 and the inner wall 101c of the housing, increase the friction between the valve core 100 and the housing 101 and the torque (e.g., rotation) that drives the valve core 100 to move.

[0065] For example, the surface of the first sealing rib 21 facing away from the main body 1 is in surface contact with the inner wall 101c of the housing. Under the action of external force, the first sealing rib 21 has a certain deformation. When the radius R1 of the first transition wall and the radius R2 of the second transition wall 212b are small, the central area at the corresponding corner of the first transition wall 211b and the second transition wall 212b is in sufficient contact with the inner wall 101c of the housing, while the edge parts corresponding to the first transition wall 211b and the second transition wall 212b are in insufficient contact with the inner wall 101c of the housing. The surface pressure of the central area at the corresponding corner of the first transition wall 211b and the second transition wall 212b with the inner wall 101c of the housing is higher than the surface pressure of the edge area at the corresponding corner of the first transition wall 211b and the second transition wall 212b with the inner wall 101c of the housing.

[0066] In related technologies, the radii of the first and second transition walls are not set reasonably, resulting in a minimum contact surface pressure of 0.14 MPa between the corresponding corners of the first and second transition walls and the inner wall of the shell, and a contact surface pressure of approximately 0.9 MPa between the corresponding portions of the first and second side walls and the inner wall of the shell. This leads to uneven contact sealing surface pressure between the first sealing rib and the inner wall of the shell, posing a risk of leakage. In this application, R1 / (L11+L12)=0.1842>0.07 (e.g., R1=3.5mm, L11+L12=19mm) and / or R2 / (L 21+L22)=0.0844>0.07 (e.g. R2=1.35mm, L21+L22=16mm), the minimum contact surface pressure between the corresponding corners of the first transition wall 211b and the second transition wall 212b and the inner wall 101c of the housing is 0.95Mpa, and the contact surface pressure between the corresponding parts of the first side wall 211a and the second side wall 212a and the inner wall 101c of the housing is about 0.9Mpa, so that the contact sealing surface pressure between the entire first sealing rib 21 and the inner wall 101c of the housing is more uniform, thereby achieving the purpose of enhancing the sealing effect of the first sealing rib 21.

[0067] For example, in Figure 2In the example, the first sealing rib 21 is arranged around the connecting opening 1c, and the first sealing rib 21 is formed into a rectangular rib. The outer peripheral wall of the first sealing rib 21 includes four first sidewalls 211a and four first transition walls. Two of the four first sidewalls 211a are of equal length, and the other two are of equal length. The length of the two first sidewalls 211a is greater than the length of the other two. L11 is the length of the shorter first sidewall 211a. L121 is the length of the first transition wall 211b at one end of the shorter first sidewall 211a in the length direction of the shorter first sidewall 211a. L122 is the length of the first transition wall 211b at the other end of the shorter first sidewall 211a in the length direction of the shorter first sidewall 211a. L12 = L121 + L122. Therefore, the sum of L11 and L12 is the length of the shorter first sidewall 211a in the length direction of the shorter first sidewall 211a. The length of the first sealing rib 21 is the sum of the lengths of the two connected first transition walls 211b. The inner peripheral wall of the first sealing rib 21 includes four second side walls 212a and four second transition walls 212b. Two of the four second side walls 212a are of equal length, and the other two are of equal length. The length of the two of the aforementioned side walls 212a is greater than the length of the other two. L21 is the length of the shorter second side wall 212a. L221 is the length of the second transition wall 212b at one end of the shorter second side wall 212a along the length of the shorter second side wall 212a. L222 is the length of the second transition wall 212b at the other end of the shorter second side wall 212a along the length of the shorter second side wall 212a. L22 = L221 + L222. Therefore, the sum of L21 and L22 is the sum of the lengths of the shorter second side wall 212a and the two connected second transition walls 212b along the length of the shorter second side wall 212a. Of course, the shape of the first sealing rib 21 is not limited to a square, and can also be other polygons, etc.

[0068] When the sealing rib 2 includes the second sealing rib 22 (the sealing rib 2 includes the second sealing rib 22 but does not include the first sealing rib 21, or the sealing rib 2 includes the first sealing rib 21 and the second sealing rib 22), the second sealing rib 22 is located between two adjacent connecting ports 1c. The outer peripheral wall of the second sealing rib 22 includes a third side wall 221a and a third transition wall 221b. There are multiple third side walls 221a. A third transition wall 221b is provided between two adjacent third side walls 221a. The radius of the third transition wall 221b is R3, R3 / (L31+L32)≥0.07, L31 is the minimum length of the two adjacent third side walls 221a corresponding to the third transition wall 221b, and L32 is the sum of the lengths of the two third transition walls 221b at both ends of the third side wall 221a corresponding to L31 in the third direction. The third direction is the length direction of the third side wall 221a corresponding to L31. The third direction can be parallel to or intersect with the first direction, and the third direction can be parallel to or intersect with the second direction.

[0069] The third transition wall 221b ensures a reasonable transition of the second sealing rib 22 between two adjacent third sidewalls 221a. When the valve core 100 is used in the valve body, the second sealing rib 22 contacts the corresponding wall surface of the housing 101. The corner portion of the second sealing rib 22 corresponding to the third transition wall 221b can better contact the inner wall 101c of the housing, making each part of the side surface of the corner portion of the second sealing rib 22 facing away from the body 1 better contact the inner wall 101c of the housing, so that the corner portion of the second sealing rib 22 and the inner wall 101c of the housing form a relatively consistent and tight contact. Thus, the corner portion of the second sealing rib 22 and the second sealing rib 22 corresponding to the first... The contact surface pressure of the three side walls 221a and the inner wall 101c of the housing is relatively consistent, which makes the contact sealing surface pressure distribution between the second sealing rib 22 and the inner wall 101c of the housing more uniform. That is, the contact sealing surface pressure between the corner of the second sealing rib 22 corresponding to the third transition wall 221b and the inner wall 101c of the housing is relatively close to that between the other parts of the second sealing rib 22 and the inner wall 101c of the housing, thereby enhancing the sealing effect between the two adjacent connecting ports 1c, so as to achieve a tight seal between the valve core 100 and the housing 101, and avoid the risk of leakage due to uneven contact sealing surface pressure distribution between the second sealing rib 22 and the inner wall 101c of the housing.

[0070] Optionally, R3 / (L31+L32) can be 0.07, 0.08, 0.09, 0.1, 0.11, or 0.12, etc.

[0071] The inventors discovered that when the radius R3 of the third transition wall 221b is too small, it is not conducive to the formation of a contact area with consistent contact sealing surface pressure between the third transition wall 221b and the inner wall 101c of the housing. Specifically, the contact surface pressure between the central area of ​​the corner portion of the second sealing rib 22 corresponding to the third transition wall 221b and the inner wall 101c of the housing, and the contact surface pressure between the edge portion of the aforementioned corner portion and the inner wall 101c of the housing, differ significantly. Alternatively, the contact surface pressure between the central area of ​​the corner portion of the second sealing rib 22 corresponding to the third transition wall 221b and the inner wall 101c of the housing may also differ. The surface pressure and the contact surface pressure of the second sealing rib 22 corresponding to the third side wall 221a and the inner wall 101c of the housing are significantly different, resulting in uneven contact sealing surface pressure formed by the second sealing rib 22 and the inner wall 101c of the housing, which easily leads to the risk of leakage. When the radius R3 of the third transition wall 221b is too large, it is easy to cause the width of the corner of the second sealing rib 22 to increase, which increases the contact area between the corner and the inner wall 101c of the housing, increases the friction between the valve core 100 and the housing 101 and the torque (e.g., rotation) that drives the valve core 100 to move.

[0072] In related technologies, the radius R3 of the third transition wall is set unreasonably. The minimum contact surface pressure between the corner portion of the second sealing rib corresponding to the third transition wall and the inner wall of the shell is 0.14 MPa, and the contact surface pressure between the portion of the second sealing rib corresponding to the third side wall and the inner wall of the shell is around 0.9 MPa. This results in uneven contact sealing surface pressure between the second sealing rib and the inner wall of the shell, which poses a risk of leakage. In this application, R3 / (L31+L32)=0.1842>0.07 (for example, R3=3). (5mm, L31+L32=19mm), the minimum contact surface pressure between the corner portion of the second sealing rib 22 corresponding to the third transition wall 221b and the inner wall 101c of the housing is 0.95Mpa, and the contact surface pressure between the portion of the second sealing rib 22 corresponding to the third side wall 221a and the inner wall 101c of the housing is about 0.9Mpa, so that the contact sealing surface pressure between the second sealing rib 22 and the inner wall 101c of the housing is more uniform, thereby achieving the purpose of enhancing the sealing effect of the second sealing rib 22.

[0073] For example, in Figures 3-6 In the example, the second sealing rib 22 is disposed between the two connecting ports 1c, and the second sealing rib 22 is formed into a rectangular rib. The outer peripheral wall of the second sealing rib 22 includes four third side walls 221a and four third transition walls 221b. Two of the four third side walls 221a are of equal length, and the other two are of equal length. The length of the two of the above is greater than the length of the other two. L31 is the length of the shorter third side wall 221a. L321 is the length of the third transition wall 221b at one end of the third side wall 221a corresponding to L31 in the length direction of the third side wall 221a. L322 is the length of the third transition wall 221b at the other end of the third side wall 221a corresponding to L31 in the length direction of the third side wall 221a. L32 = L321 + L322. Then the sum of L31 and L32 is the sum of the lengths of the third side wall 221a and the two connected third transition walls 221b in the length direction of the third side wall 221a. Of course, the shape of the second sealing rib 22 is not limited to this.

[0074] Optionally, the number of the first sealing rib 21 and the second sealing rib 22 is not limited to one, and the number of the first sealing rib 21 and / or the second sealing rib 22 provided on the valve core 100 can be two or more respectively.

[0075] For example, in Figure 1 and Figure 7In the example, the housing 101 is provided with multiple flow holes, and the valve core 100 is rotatably disposed within the housing 101. The body 1 of the valve core 100 defines two switching channels, each of which has a connecting port 1c. The two switching channels are divided into a first switching channel 1a and a second switching channel 1b. The connecting port of the first switching channel 1a is the first connecting port, and the connecting port of the second switching channel 1b is the second connecting port. There is one first connecting port and six second connecting ports. Two of the second connecting ports are located on both sides of the first connecting port, and four of the second connecting ports are located on the side of the first connecting port that is axially aligned with the valve core 100. The valve core 100 is driven to rotate so that... The first switching flow channel 1a and the second switching flow channel 1b can be connected to the flow passage through different connecting ports 1c. A first sealing rib 21 is arranged around the first connecting port, and the first sealing rib 21 is a rectangular rib. The first sealing rib 21 achieves a seal between the first connecting port and the inner wall 101c of the housing. Three second sealing ribs 22 are located on one side of the first sealing rib 21 in the axial direction of the valve core 100, and each second sealing rib 22 is located between two adjacent second connecting ports. The second sealing ribs 22 achieve a seal between the corresponding flow passage on the housing 101, thereby achieving a seal between the second connecting port and the housing 101. It can be understood that the first sealing rib 21 can be used to seal the valve core 100 and housing 101 when the switching flow channel is connected to one connecting port 1c, and the second sealing ribs 22 can be used to seal the valve core 100 and housing 101 when the switching flow channel is connected to multiple connecting ports 1c.

[0076] Of course, the number of the first and second connecting ports is not limited to this; the number of the two ports can be equal or unequal.

[0077] Furthermore, when a sealing element 102 is provided between the valve core 100 and the housing 101, the first sealing rib 21 and the second sealing rib 22 can achieve a seal between the valve core 100 and the sealing element 102.

[0078] Optionally, the radius R1 of the first outer wall 212b and the radius R2 of the first inner wall can be the same or different. The size of the radius R1 of the first outer wall 212b and the radius R2 of the first inner wall can be adaptively designed according to the different effects on sealing effect and friction torque in different locations or in different working modes.

[0079] According to an embodiment of the present invention, the valve core 100 is provided with sealing ribs 2 including a first sealing rib 21 and / or a second sealing rib 22. The first sealing rib 21 satisfies R1 / (L11+L12)≥0.07 and / or R2 / (L21+L22)≥0.07, which makes the corner portion of the first sealing rib 21 better contact the inner wall 101c of the housing, improves the uniformity of the contact surface pressure distribution between the corner portion of the first sealing rib 21 and the inner wall 101c of the housing, and makes the contact sealing surface pressure between the first sealing rib 21 and the inner wall 101c of the housing more uniform, so as to achieve a tight seal between the valve core 100 and the housing 101, and avoid local contact between the valve core 100 and the housing 101. The large difference in contact sealing surface pressure between the inner walls 101c of the housing poses a risk of leakage. The second sealing rib 22 satisfies R3 / (L31+L32)≥0.07, which allows the corresponding corner portion of the second sealing rib 22 to better contact the inner wall 101c of the housing, improving the uniformity of the contact surface pressure distribution between the corner portion of the second sealing rib 22 and the inner wall 101c of the housing. This results in a more uniform contact sealing surface pressure distribution between the corner portion of the second sealing rib 22 and the inner wall 101c of the housing, thereby achieving a tight seal between the valve core 100 and the housing 101 and avoiding the risk of leakage due to uneven contact sealing surface pressure distribution between the second sealing rib 22 and the inner wall 101c of the housing.

[0080] In some embodiments, such as Figure 2 As shown, the sealing rib 2 includes a first sealing rib 21, with 0.15≤R1 / (L11+L12)≤0.3 and / or R2 / (L21+L22)≤0.2, which further makes the transition of the first transition wall 211b more reasonable, and further makes the corresponding corners between the first transition wall 211b and the second transition wall 212b form a relatively consistent and tight contact with the inner wall 101c of the housing. This is conducive to each part of the corresponding corners between the first transition wall 211b and the second transition wall 212b making better contact with the inner wall 101c of the housing, and further improving the uniformity of the pressure distribution of the contact sealing surface between the first sealing rib 21 and the inner wall 101c of the housing, so as to achieve the sealing of the corresponding communication port 1c.

[0081] Optionally, R1 / (L11+L12) can be 0.15, 0.2, 0.25, or 0.3, etc., and / or R2 / (L21+L22) can be 0.07, 0.1, 0.13, 0.17, or 0.2, etc.

[0082] In some embodiments, such as Figure 2As shown, 0.2≤R1 / (L11+L12)≤0.27 and / or 0.1≤R2 / (L21+L22)≤0.18, which makes the transition of the first transition wall 211b more reasonable, and further makes the corresponding corners between the first transition wall 211b and the second transition wall 212b form a more consistent and tight contact with the inner wall 101c of the shell, and further improves the uniformity of the pressure distribution of the contact sealing surface between the first sealing rib 21 and the inner wall 101c of the shell, so as to achieve the sealing of the corresponding communication port 1c.

[0083] Optionally, R1 / (L11+L12) can be 0.2, 0.21, 0.23, 0.25, or 0.27, etc., and / or R2 / (L21+L22) can be 0.1, 0.12, 0.14, 0.16, or 0.18, etc.

[0084] In some embodiments, such as Figure 1 As shown, the sealing rib 2 includes a first sealing rib 21, the body 1 includes a cylindrical portion, the switching channel is located inside the cylindrical portion, and the connecting port 1c is formed on the peripheral wall of the cylindrical portion. The first sealing rib 21 is formed into a square ring structure, and the width direction of the first sealing rib 21 is parallel to the axial direction of the cylindrical portion. (L11+L12) is the dimension of the outer peripheral wall of the first sealing rib 21 in the axial direction of the cylindrical portion, and (L21+L22) is the dimension of the inner peripheral wall of the first sealing rib 21 in the axial direction of the cylindrical portion. This simplifies the structure of the first sealing rib 21 while ensuring that the first sealing rib 21 is in close contact with the inner wall 101c of the housing, and also helps to reduce the design difficulty of the first transition wall 211b and / or the second transition wall 212b.

[0085] It is understood that the length direction of the outer peripheral wall of the first sealing rib 21 and the length direction of the inner peripheral wall of the first sealing rib 21 are both the length direction of the first sealing rib 2, and the width direction of the outer peripheral wall of the first sealing rib 21 and the width direction of the inner peripheral wall of the first sealing rib 21 are both the width direction of the first sealing rib 2. For example, in Figure 1 In the example, the first sealing rib 21 is arranged around the communication port 1c, and the first sealing rib 21 is formed as a square annular rib. The width direction of the first sealing rib 21 is parallel to the axial direction of the cylinder (e.g., Figure 1 (L11+L12) is the width of the outer peripheral wall of the first sealing rib 21, and (L21+L22) is the width of the inner peripheral wall of the first sealing rib 21.

[0086] In some embodiments, such as Figure 1 and Figure 5As shown, the sealing rib 2 includes a second sealing rib 22, 0.15≤R3 / (L31+L32)≤0.3, which further makes the transition of the third transition wall 221b more reasonable, and further makes the entire edge of the second sealing rib 22 form a relatively consistent and tight contact with the inner wall 101c of the housing, thereby improving the uniformity of the pressure distribution of the contact sealing surface between the second sealing rib 22 and the inner wall 101c of the housing, so as to achieve the sealing of the communication port 1c.

[0087] Optionally, R3 / (L31+L32) can be 0.15, 0.2, 0.25, or 0.3, etc.

[0088] In some embodiments, such as Figures 3-6 As shown, 0.2≤R3 / (L31+L32)≤0.27, which makes the transition of the third transition wall 221b more reasonable, and further makes the entire edge of the second sealing rib 22 form a more consistent and tight contact with the inner wall 101c of the housing, thereby improving the uniformity of the contact sealing surface pressure distribution between the second sealing rib 22 and the inner wall 101c of the housing, so as to achieve the sealing of the communication port 1c.

[0089] Optionally, R3 / (L31+L32) can be 0.2, 0.21, 0.23, 0.25, or 0.27, etc.

[0090] In some embodiments, such as Figure 3 and Figure 6 As shown, the sealing rib 2 includes a second sealing rib 22. At least one groove 1d is formed on the side of the second sealing rib 22 facing away from the body 1. The peripheral wall of the groove 1d includes a fourth sidewall 222a and a fourth transition wall 222b. There are multiple fourth sidewalls 222a, and a fourth transition wall 222b is provided between two adjacent fourth sidewalls 222a. The radius of the fourth transition wall 222b is R4, where R4 / (L41+L42)≥0.07. L41 is the minimum length of the two adjacent fourth sidewalls 222a corresponding to the fourth transition wall 222b, and L42 is the sum of the lengths of the two fourth transition walls 222b at both ends of the fourth sidewall 222a corresponding to L41 in a fourth direction. The fourth direction is the length direction of the fourth sidewall 222a corresponding to L41. The fourth direction may be the same as or different from a third direction.

[0091] Therefore, the above-mentioned arrangement of the fourth transition wall 222b makes the transition at the corner of the periphery of the groove 1d reasonable. When the second sealing rib 22 contacts the inner wall 101c of the housing, each part of the side surface of the corner of the fourth transition wall 222b facing the inner wall 101c of the housing makes better contact with the inner wall 101c of the housing. This makes the corner of the periphery of the groove 1d form a relatively consistent and tight contact with the inner wall 101c of the housing, thereby improving the uniformity of the contact sealing surface pressure distribution between the second sealing rib 22 and the inner wall 101c of the housing. That is, the contact sealing surface pressure between the fourth transition wall 222b and the inner wall 101c of the housing is relatively close to the contact sealing surface pressure between the fourth side wall 222a and the inner wall 101c of the housing. This enhances the sealing effect at the connection port 1c, so as to achieve a tight seal between the valve core 100 and the housing 101, and avoid the risk of leakage due to a large difference in the contact sealing surface pressure between the second sealing rib 22 and the inner wall 101c of the housing.

[0092] Optionally, R4 / (L41+L42) can be 0.07, 0.08, 0.09, 0.1, or 0.11, etc.

[0093] Optionally, the third transition wall and the fourth transition wall are arranged radially opposite each other.

[0094] For example, in Figure 6 In the example, the second sealing rib 22 is disposed between the two connecting ports 1c, and the second sealing rib 22 is formed into a rectangular rib. A groove 1d is formed on the side of the second sealing rib 22 facing away from the body 1. The peripheral wall of the groove 1d includes four fourth sidewalls 222a and four fourth transition walls 222b. The four fourth sidewalls 222a are two fourth sidewalls 222a of equal and longer length and two fourth sidewalls 222a of equal and shorter length. L41 is the length of the shorter fourth sidewalls 222a, and L42 is the length of the shorter fourth sidewalls 222a. L41 represents the length of the fourth transition wall 222b at one end of the fourth sidewall 222a corresponding to L41 in the length direction of the fourth sidewall 222a. L422 represents the length of the fourth transition wall 222b at the other end of the fourth sidewall 222a corresponding to L41 in the length direction of the fourth sidewall 222a. L42 = L421 + L422. Therefore, the sum of L41 and L42 is the sum of the lengths of the fourth sidewall 222a and the two connected fourth transition walls 222b in the shorter fourth sidewall 222a length direction.

[0095] In addition, the groove 1d formed on the side of the second sealing rib 22 away from the body 1 can reduce the contact area between the second sealing rib 22 and the inner wall 101c of the housing, thereby reducing the friction between the valve core 100 and the housing 101, so as to reduce the resistance to driving the valve core 100 to move (e.g., rotate).

[0096] In some embodiments, such as Figure 6 As shown, R4 / (L41+L42)≤0.2 further ensures that the corner portion of the groove 1d corresponding to the fourth transition wall 222b contacts the inner wall 101c of the housing well, so that the edge portion of the groove 1d forms a relatively consistent and tight contact with the inner wall 101c of the housing. This helps to further improve the uniformity of the pressure distribution on the contact sealing surface between the second sealing rib 22 and the inner wall 101c of the housing, thereby achieving a tight seal of the communication port 1c. Optionally, R4 / (L41+L42) can be 0.07, 0.1, 0.13, 0.17, or 0.2, etc.

[0097] In some embodiments, such as Figure 6 As shown, 0.1 ≤ R4 / (L41+L42) ≤ 0.18, which is beneficial to further improve the uniformity of the pressure distribution on the contact sealing surface between the second sealing rib 22 and the inner wall 101c of the housing. Optionally, R4 / (L41+L42) can be 0.1, 0.12, 0.14, 0.16, or 0.18, etc.

[0098] In some embodiments, such as Figures 3-4 As shown, multiple grooves 1d spaced apart along a fifth direction (e.g., the circumferential direction of the valve core 100) constitute a groove group. In the fifth direction, the radius of the fourth transition wall 222b at the ends of the two outermost grooves 1d of the groove group that are far apart from each other is R41, and the radius of the remaining fourth transition walls 222b of the groove group is R42, where R41 < R42. This makes the radius R42 of the fourth transition wall 222b located in the middle of the groove group larger, so that the corner portion of the fourth transition wall 222b located on the inner side can better contact the inner wall 101c of the housing to form a more consistent and tight contact, thereby improving the uniformity of the contact sealing surface pressure between the second sealing rib 22 and the inner wall 101c of the housing. It is understood that the fifth direction can be the same as the first direction, or the same as the second direction, or the same as the third direction, or the same as the fourth direction, or different from all four directions.

[0099] For example, in Figure 3In the example, the second sealing rib 22 is disposed between two adjacent connecting ports 1c. Two grooves 1d are formed on the side of the second sealing rib 22 facing away from the body 1. The two grooves 1d are spaced apart circumferentially along the valve core 100 and constitute a set of grooves. The peripheral wall of each groove 1d includes four fourth sidewalls 222a and four fourth transition walls 222b. The four fourth sidewalls 222a are two equal and longer fourth sidewalls 222a and two equal and shorter fourth sidewalls 222a, respectively. L41 is the length of the shorter fourth sidewalls 222a. Extending circumferentially along the valve core 100, the longer fourth sidewall 222a extends axially along the valve core 100. L42 is the length of the fourth transition wall 222b at one end of the fourth sidewall 222a corresponding to L41 in the circumferential direction of the valve core 100, and L422 is the length of the fourth transition wall 222b at the other end of the fourth sidewall 222a corresponding to L41 in the circumferential direction of the valve core 100. L42 = L421 + L422, so the sum of L41 and L42 is the sum of the lengths of the shorter fourth sidewall 222a and the two connected fourth transition walls 222b in the circumferential direction of the valve core 100. It can be understood that the length in the circumferential direction of the valve core 100 can be understood as the arc length of the curve.

[0100] In some embodiments, such as Figure 1 As shown, the sealing rib 2 includes a second sealing rib 22, the body 1 includes a cylindrical part, the switching channel is located inside the cylindrical part, the connecting port 1c is formed on the peripheral wall of the cylindrical part, the second sealing rib 22 is formed into a square structure, and the width direction of the second sealing rib 22 is parallel to the axial direction of the cylindrical part. L31+L32 is the dimension of the outer peripheral wall of the second sealing rib 22 in the axial direction of the cylindrical part, and L41+L42 is the dimension of the peripheral wall of the groove 1d in the axial direction of the cylindrical part.

[0101] For example, in Figure 1 In the example, the housing 101 has multiple flow holes, and the second sealing rib 22 is displaced between two adjacent connecting ports 1c. The second sealing rib 22 is formed into a square shape and defines two grooves 1d. The width direction of the second sealing rib 22 and the width direction of the grooves 1d are both parallel to the axial direction of the cylindrical part (e.g., Figure 1 (in the vertical direction), L31+L32 is the dimension of the outer peripheral wall of the second sealing rib 22 in the axial direction of the cylindrical part, and L41+L42 is the dimension of the inner peripheral wall of the second sealing rib 22 in the axial direction of the cylindrical part.

[0102] In some embodiments, such as Figure 1As shown, the sealing rib 2 includes a first sealing rib 21 and a second sealing rib 22. The body 1 defines multiple switching channels, including a first switching channel 1a and a second switching channel 1b spaced apart. The first sealing rib 21 is arranged around the communication port 1c of the first switching channel 1a. The second sealing rib 22 is arranged between two adjacent communication ports 1c of the second switching channel 1b. The first sealing rib 21 and the second sealing rib 22 cooperate to achieve a seal between the valve core 100 and the housing 101, ensuring the normal operation of the first switching channel 1a and the second switching channel 1b.

[0103] According to a second aspect embodiment of the present invention, a multi-way valve 200 includes a housing 101 and a valve core 100 according to the second aspect embodiment of the present invention. The housing 101 is provided with a flow passage 101a. The valve core 100 is movably disposed within the housing 101. The switching flow channel is adapted to communicate with the corresponding flow passage 101a. By driving the valve core 100 to move, the switching flow channel of the valve core 100 is connected with the corresponding flow passage, so as to realize at least one of the functions of the multi-way valve 200, such as the switching function and the proportional adjustment function.

[0104] According to an embodiment of the present invention, the sealing performance of the multi-way valve 200 can be improved by using the valve core 100 described above.

[0105] For example, refer to Figures 9-16 As shown, the multi-way valve 200 includes a housing 101 and a valve core 100. An open assembly cavity 101b is formed within the housing 101. The valve core 100 is installed into the assembly cavity 101b. A cover plate 103 is detachably installed on the housing 101 and used to close the open end of the assembly cavity 101b, thereby sealing the valve core 100 within the housing 101. The valve core 100 is rotatable relative to the housing 101. A drive member 104 is also installed on the housing 101. The output end of the drive member 104 is connected to the valve core 100, allowing the drive member 104 to drive the valve core 100 to rotate around its own axis. Multiple flow holes 101a are provided on the inner wall of the assembly cavity 101b of the housing 101. The flow holes 101a are arranged radially opposite to the valve core 100. By driving the valve core 100 to rotate, the switching flow channel of the valve core 100 is connected to the corresponding flow through hole 101a, so as to realize the switching function and proportional adjustment function of the multi-way valve 200.

[0106] It is understood that the flow through hole 101a on the housing 101 can be connected to an external pipe containing a flowing medium. Thus, the medium can enter or exit the multi-way valve 200 through the flow through hole 101a, thereby enabling the multi-way valve 200 to discharge or draw in the medium to the outside. The medium can be water, antifreeze, or other liquids, which are not limited here.

[0107] Furthermore, the valve core 100 is installed inside the housing 101, and the valve core 100 can rotate within the housing 101 along its own axis, wherein, for example... Figure 7 As shown, the valve core 100 is provided with at least one switching flow channel, which is used to communicate with two of the multiple flow through holes 101a. The valve core 100 can rotate to switch the switching flow channel to communicate with different flow through holes 101a. When the switching flow channel is connected to different flow through holes 101a, the medium can enter the multi-way valve 200 through different flow through holes 101a and flow out of the multi-way valve 200, so that the multi-way valve 200 has different working modes.

[0108] In some embodiments, such as Figure 11 As shown, there are at least three flow through holes 101a. The switching flow channel is configured to allow different flow through holes 101a to switch and connect, which can realize the function of the multi-way valve 200 as a reversing valve, so that the thermal management system 300 with it can switch modes.

[0109] For example, in Figure 7 and Figures 13-16 In the example, the valve core 100 is provided with multiple switching channels, including a first switching channel 1a and a second switching channel 1b. The first switching channel 1a is configured such that one of the flow through holes 101a is switched to be connected with at least two flow through holes 101a. The second switching channel 1b is configured such that different flow through holes 101a are switched to be connected. The second switching channel 1b is also configured to change the number of connected flow through holes 101a.

[0110] For example, in Figure 11 and Figures 13-16In the example, the housing 101 defines five flow through holes 101a, including a first flow through hole 1011, a second flow through hole 1012, a third flow through hole 1013, a fourth flow through hole 1014, and a fifth flow through hole 1015. The valve core 100 defines two switching channels, including a first switching channel 1a and a second switching channel 1b. The first switching channel 1a can be used to allow flow between the second flow through hole 1012 and the first flow through hole 1011, or to allow flow between the second flow through hole 1012 and the third flow through hole 1013. Because the second flow through hole 1012 always has a flow through hole 101a connected to it during the rotation of the valve core 100 for mode switching, the multi-way valve 200 can achieve continuous flow, ensuring that there is always liquid flow in the pipe connected to it. It should be noted that during the rotation of the valve core 100, it can switch between different flow channels 101a and at least multiple flow channels 101a. For example, the first switching flow channel 1a can correspond to four or more flow channels 101a. The flow channel can be switched between the second flow channel 1012 and the first flow channel 1011 and the third flow channel 1013. Then, it can be switched between the third flow channel 1013 and the fourth flow channel 1014 and the fifth flow channel 1015, thereby ensuring that the multi-way valve 200 can switch without interrupting the flow.

[0111] The second switching channel 1b can be used to connect the fourth flow through hole 1014 with the third flow through hole 1013, or it can be used to connect the fifth flow through hole 1015 with the third flow through hole 1013 respectively. The second switching channel 1b can also be used to connect two flow through holes 101a, for example, it can also be used to connect the fourth flow through hole 1014 and the fifth flow through hole 1015 with the third flow through hole 1013 respectively. Alternatively, the second channel can be used to connect three or more flow through holes 101a, thereby changing the number of connected flow through holes 101a.

[0112] It should also be noted that during the process of switching the second switching channel 1b from being connected to the fourth flow passage 1014 to being connected to the fifth flow passage 1015, as the valve core 100 rotates, the second switching channel 1b first connects to both the fourth flow passage 1014 and the fifth flow passage 1015 simultaneously, and then connects to the fifth flow passage 1015 alone. During the process of the second switching channel 1b being simultaneously connected to both the fourth and fifth flow passages, as the valve core 100 rotates, the area connected to the fourth flow passage 1014 gradually decreases, thereby gradually increasing the area connected to the fifth flow passage 1015, and vice versa. This allows for proportional adjustment without interrupting flow during the proportional adjustment process.

[0113] In some embodiments, the first switching channel 1a extends along the rotation direction of the valve core 100, and a plurality of flow holes 101a are arranged sequentially in the extension direction of the first switching channel 1a.

[0114] For example, refer to Figure 13 As shown, the first switching flow channel 1a is disposed on the outer peripheral wall of the valve core 100, and the first switching flow channel 1a extends along the rotation direction of the valve core 100. The housing 101 has a plurality of flow holes 101a arranged sequentially along the extension direction of the first switching flow channel 1a. The first switching flow channel 1a is used to connect two (or more) adjacent flow holes 101a, and when the valve core 100 rotates, the first switching flow channel 1a can connect the flow hole 101a with another adjacent flow hole 101a.

[0115] In actual arrangements, such as Figures 14-17 As shown, the first flow passage 1011, the second flow passage 1012, and the third flow passage 1013 can be arranged sequentially. When the first switching channel 1a connects the first flow passage 1011 and the second flow passage 1012, the valve core 100 can be rotated so that the first switching channel 1a can connect the second flow passage 1012 and the third flow passage 1013, and vice versa. This helps to improve the switching stability of the first switching channel 1a and improves the reliability of the multi-way valve 200.

[0116] In some embodiments, the housing 101 is provided with at least two rows of through holes, which are arranged along the central axis of the valve core 100. Each row of through holes includes a plurality of flow through holes 101a arranged along the rotation direction of the valve core 100. The at least two rows of through holes include a first row of through holes and a second row of through holes. At least two flow through holes 101a in the first row of through holes are switched and connected through a first switching channel 1a. The second switching channel 1b is configured to connect the flow through holes 101a of the first row of through holes and the second row of through holes.

[0117] For example, refer to Figure 11 and Figure 14 As shown, the housing 101 may be provided with at least two rows of through holes, which are arranged sequentially along the central axis of the valve core 100. Each row of through holes includes multiple flow holes 101a, and the multiple flow holes 101a in the same group can be arranged sequentially along the rotation direction of the valve core 100. The at least two rows of through holes include a first row and a second row. At least two flow holes 101a in the first row are switched and connected through a first switching channel 1a, and a second switching channel 1b is configured to connect the flow holes 101a of the first and second rows of through holes.

[0118] For example, such as Figures 14-17As shown, a first row of through holes can be provided, including a first through hole 1011, a second through hole 1012, and a third through hole 1013. The first through hole 1011, the second through hole 1012, and the third through hole 1013 are arranged sequentially along the rotation direction of the valve core 100. The second row of through holes includes a fourth through hole 1014 and a fifth through hole 1015. The fourth through hole 1014 and the fifth through hole 1015 are arranged sequentially along the rotation direction of the valve core 100.

[0119] The first switching channel 1a can connect the first through hole 1011 and the second through hole 1012, or it can connect the second through hole 1012 and the third through hole 1013. The second switching channel 1b can connect the fourth through hole 1014 and the third through hole 1013, or it can connect both the fourth through hole 1014 and the fifth through hole 1015 to the third through hole 1013, or it can connect the fifth through hole 1015 to the third through hole 1013. The above embodiments are merely exemplary and do not limit the present invention.

[0120] With the above settings, the valve core 100 can connect the flow through holes 101a of different through hole groups, so that the arrangement of the flow through holes 101a can be flexible and varied, which improves the practicality of the multi-way valve 200 and reduces the layout difficulty of the multi-way valve 200.

[0121] In some embodiments, the second switching flow channel 1b is disposed within the valve core 100, and the second switching flow channel 1b is connected to a plurality of connecting ports 1c. The plurality of connecting ports 1c includes at least one first connecting port 1f and a plurality of second connecting ports 1g. The first connecting port 1f is connected to or misaligned with the first row of through holes, and the second connecting ports 1g are connected to or misaligned with the second row of through holes.

[0122] For example, refer to Figures 11-14 As shown, the second switching channel 1b is located inside the valve core 100 and is separated from the first switching channel 1a. A connecting hole is formed on the side wall of the valve core 100 corresponding to the second switching channel 1b, and the connecting hole penetrates the side wall of the valve core 100 radially. The second switching channel 1b has at least one first connecting port 1f and multiple second connecting ports 1g, which are arranged sequentially along the axial direction of the valve core 100. Specifically, the first connecting port 1f is positioned opposite to the first row of through holes, and can communicate with or be offset from the through holes 101a of the first row of through holes; the second connecting ports 1g are positioned opposite to the second row of through holes, and can communicate with or be offset from the through holes 101a of the second row of through holes.

[0123] Understandably, by setting the first and second rows of through holes to connect to the second switching channel 1b through different connecting holes, the direct connection between the first and second rows of through holes can be avoided, which helps to improve the flow stability of the liquid in the second switching channel 1b and improves the reliability of the multi-way valve 200. Furthermore, by setting the second switching channel 1b inside the valve core 100, the internal space of the valve core 100 can be made more efficient, increasing the flexibility of the shape setting of the second switching channel 1b.

[0124] In some embodiments, the first connecting port 1f is configured to simultaneously communicate with at least two flow through holes 101a, and the second switching flow channel 1b communicates with one of the flow through holes 101a through the second connecting port 1g. That is, during the rotation of the valve core 100, when the second connecting port 1g is rotated to the point where it is blocked by the housing 101 and no fluid enters, the first connecting port 1f can still have a flow through hole 101a communicating with it. This allows the first connecting port 1f to switch communication with different flow through holes 101a on the housing 101 through the second switching flow channel 1b and the second connecting port 1g, and also changes the number of connected fluid through holes. This simplifies the structure of the valve core 100.

[0125] In some specific embodiments of the present invention, such as Figure 13 As shown, the first connecting port 1f extends at least twice the length of the second connecting port 1g in the circumferential direction of the valve core 100.

[0126] In some embodiments, refer to Figure 13 As shown, in the rotation direction of the valve core 100, both sides of the first switching flow channel 1a are provided with first connecting ports 1f. With the above arrangement, during the rotation of the valve core 100, the first row of through holes always has through holes 101a connected to the first switching flow channel 1a and / or the first connecting ports 1f, thereby achieving the purpose of continuous flow.

[0127] For example, such as Figures 14-17As shown, a first row of through holes can be provided, including a first flow through hole 1011, a second flow through hole 1012, and a third flow through hole 1013. The first flow through hole 1011, the second flow through hole 1012, and the third flow through hole 1013 are arranged sequentially along the circumference of the valve core 100. A first switching flow channel 1a is used to connect two adjacent ones of the first flow through hole 1011, the second flow through hole 1012, and the third flow through hole 1013. In the rotation direction of the valve core 100, a first connecting port 1f can be provided on both sides of the first switching flow channel 1a. When the first switching flow channel 1a connects the first flow through hole 1011 and the second flow through hole 1012, the first connecting port 1f on the corresponding side can connect with the third flow through hole 1013. When the first switching flow channel 1a connects the second flow through hole 1012 and the third flow through hole 1013, the first connecting port 1f on the corresponding side can connect with the first flow through hole 1011.

[0128] In some embodiments, in the extending direction of the central axis of the valve core 100, the first communication port 1f and / or the first switching flow channel 1a are disposed opposite to at least one second communication port 1g. For example, refer to Figure 13 As shown, in the extension direction of the central axis of the valve core 100, the first connecting port 1f can be arranged opposite to at least one second connecting port 1g; alternatively, the first switching flow channel 1a can be arranged opposite to at least one second connecting port 1g; or alternatively, the first connecting port 1f and the first switching flow channel 1a can each be arranged opposite to at least one second connecting port 1g. Through these arrangements, a centralized arrangement is achieved, which helps to reduce the size of the multi-way valve 200, thereby reducing the overall size of the multi-way valve 200.

[0129] In some embodiments, the second connection port 1g opposite to each first connection port 1f is located at the end of the corresponding first connection port 1f that is away from the first switching channel 1a. For example, refer to Figure 13 As shown, in the extension direction of the central axis of the valve core 100, each first connecting port 1f is directly opposite a second connecting port 1g, and the second connecting port 1g opposite to the first connecting port 1f is located at the end of the first connecting port 1f away from the first switching flow channel 1a. Thus, when the second connecting port 1g opposite to the first connecting port 1f is misaligned with the flow through hole 101a of the second row of through holes, the first connecting port 1f can still communicate with the same flow through hole 101a of the first row of through holes. Therefore, communication between the first connecting port 1f and different flow through holes 101a in the second row of through holes can be achieved, which improves the practicality of the multi-way valve 200.

[0130] Furthermore, referring to Figure 13 As shown, in the direction extending from the central axis of the valve core 100, a second connecting port 1g is provided at both ends of the first switching flow channel 1a. For example, as... Figures 13-17 As shown, when the first switching channel 1a is connected to the first flow through hole 1011 and the second flow through hole 1012, the first connecting port 1f on the right side can be connected to the third flow through hole 1013. At this time, the valve core 100 can be rotated to the first switching position so that the second connecting port 1g corresponding to the first connecting port 1f on the right side can be connected to the fifth flow through hole 1015; or, the valve core 100 can be rotated to the second switching position so that the second connecting port 1g at the left end of the first switching channel 1a can be connected to the fourth flow through hole 1014; or, the valve core 100 can be rotated between the first switching position and the second switching position so that the second connecting port 1g corresponding to the first connecting port 1f on the right side can be connected to the fifth flow through hole 1015, and the second connecting port 1g at the left end of the first switching channel 1a can be connected to the fourth flow through hole 1014.

[0131] With the above settings, the second switching channel 1b can be connected to the two flow through holes 101a in the second row of through holes at the same time, which is conducive to realizing the proportional adjustment function. In addition, during the process of switching the flow through holes 101a in the second switching channel 1b, there is always liquid flowing in the second switching channel 1b, realizing uninterrupted flow and improving the stability of the multi-way valve 200.

[0132] In some embodiments, the rotation angle of the valve core 100 is ≤90°. Specifically, the rotation angle of the valve core 100 can be set to 85°; or the rotation angle of the valve core 100 can be set to 75°, or the rotation angle of the valve core 100 can be set to 65°, and this application does not limit this. Preferably, the rotation angle of the valve core 100 can be set to 80°.

[0133] It is understandable that by limiting the rotation angle of the valve core 100, the first switching channel 1a and the second switching channel 1b can be confined within the fan-shaped area of ​​the valve core 100, thereby reducing the area occupied by the first switching channel 1a and the second switching channel 1b, improving the stability during the switching process, and enhancing the reliability of the multi-way valve 200.

[0134] Furthermore, the arrangement of multiple connecting holes can be symmetrical with respect to the central axis of the valve core 100. For example, the second switching channel 1b includes two first connecting ports 1f and four second connecting ports 1g. The two first connecting ports 1f are respectively located on both sides of the first switching channel 1a along the rotation direction of the valve core 100 and are symmetrical with respect to the central axis of the valve core 100. The four second connecting ports 1g are located on the same side of the first switching channel 1a along the axial direction of the valve core 100. Two second connecting ports 1g are respectively opposite to the two ends of the first switching channel 1a and are symmetrical with respect to the central axis of the valve core 100. The other two second connecting ports 1g are respectively located at the end of the first connecting port 1f away from the first switching channel 1a and are symmetrical with respect to the central axis of the valve core 100. With the above arrangement, the switching process of the valve core 100 can remain stable during forward or reverse rotation, which helps to reduce the layout difficulty of the multi-way valve 200 and improves the layout rationality of the multi-way valve 200.

[0135] In some embodiments, such as Figures 9-10 As shown, the multi-way valve 200 also includes a sealing element 102, which is located between the inner wall of the housing 101 and the valve core 100. The sealing element 102 has clearance holes 102a, which correspond one-to-one with the flow passage holes 101a. It can be seen that the sealing element 102 contacts both the valve core 100 and the housing 101, sealing the gap between the valve core 100 and the housing 101, the switching flow path of the valve core 101, and the flow passage holes 101a. This effectively ensures sealing between the valve core 100 and the sealing element 102, and between the sealing element 102 and the housing 101, during the movement of the valve core 100 relative to the housing 101. This prevents the medium inside the switching flow path of the valve core 100 from leaking to other locations, such as into the valve body, which could lead to internal leakage and failure of the multi-way valve 200. This, in turn, avoids internal mixing of the medium or loss of the regulating function of the multi-way valve 200, thus improving the reliability of the multi-way valve 200.

[0136] The seal 102 includes a sealing part 1021 and a wear-resistant part 1022. The wear-resistant part 1022 is located on the side surface of the sealing part 1021 facing the sealing rib 2. The sealing part 1021 can separate the valve core 100 from the housing 101, which can prevent adjacent flow holes 101a from being directly connected, thus improving the reliability and stability of the multi-way valve 200. Secondly, the wear-resistant part 1022 is in contact with the valve core 100. The wear-resistant part 1022 can reduce the wear of the seal 102 by the valve core 100 during rotation, which helps to protect the seal 102, thereby improving the sealing reliability and extending the service life of the seal 102.

[0137] Optionally, the material of the wear-resistant part 1022 is a material with a low coefficient of friction and wear resistance. For example, the wear-resistant part 1022 can be made of fluoroplastic film or PTFE (polytetrafluoroethylene) material. This makes the wear-resistant part 1022 have the effect of wear resistance and low coefficient of friction, thereby reducing the wear of the valve core 100 on the seal 102 during the movement, and also reducing the friction between the seal 102 and the valve core 100. This provides lubrication between the seal 102 and the valve core 100, extending the service life of the seal 102. At the same time, it keeps the movement resistance of the valve core 100 (e.g., the torque on the valve core 100 when the valve core 100 rotates relative to the housing 101) within a small range.

[0138] Of course, the material of the wear-resistant part 1022 can also be any material that meets the performance requirements, and there are no restrictions here.

[0139] In other embodiments, the wear-resistant part 1022 is constructed as a coating film, which can be made of fluoroplastic film, such as PTFE (polytetrafluoroethylene) material, so that the coating film has wear-resistant, lubricating and other properties, which is beneficial to improving its friction and wear performance.

[0140] For example, in actual production, the side of the coating film facing the sealing part 1021 is chemically treated, and the side of the sealing part 1021 facing the coating film is chemically treated. Then, the coating film and the sealing part 1021 are assembled and injection molded so that the shape of the coating film and the sealing part 1021 are the same. Then, the coating film is stamped by a stamping tool so that a through hole corresponding to the clearance through hole of the sealing part 1021 is formed on the coating film.

[0141] According to a third aspect of the present invention, a thermal management system 300 includes a manifold and a multi-way valve 200. The manifold has multiple flow channels for circulating media. The multi-way valve 200 is the same as the multi-way valve 200 described in the second aspect of the present invention. The multi-way valve 200 is disposed on the manifold, and the multiple flow channels are respectively connected to multiple flow holes 101a. The valve core 100 rotates to control the multiple flow channels to switch connections, thereby controlling the thermal management system 300 to switch modes.

[0142] It should be noted that the thermal management system 300 can be applied to the vehicle 1000, as well as to household air conditioners, central air conditioners, and any equipment with a thermal management system 300. The application of the thermal management system 300 does not limit the present invention.

[0143] According to the thermal management system 300 of the present invention, by setting multiple flow channels, at least one flow channel can switch and connect one flow through hole 101a with at least two flow through holes 101a, and at least another flow channel can switch and connect different flow through holes 101a and change the number of connected flow through holes 101a, so that the multi-way valve 200 can have both reversing function and proportional adjustment function, realize integrated arrangement, reduce the number of driving components 104, help reduce costs, save installation space, and achieve the purpose of continuous flow, thereby improving the reliability of the thermal management system 300.

[0144] A vehicle 1000 according to a fourth aspect of the present invention includes a thermal management system 300 according to the third aspect of the present invention described above.

[0145] According to an embodiment of the present invention, the overall performance of the vehicle 1000 is improved by adopting the above-described thermal management system 300.

[0146] Optionally, vehicle 1000 can be a new energy vehicle, which can be a pure electric vehicle with an electric motor as the main driving force, or 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 method of providing electrical energy to the electric motor can use a power battery, hydrogen fuel cell, etc., without special limitations. It should be noted that this is merely an illustrative description of the structure of new energy vehicles, etc., and is not intended to limit the scope of protection of this invention.

[0147] 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," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the 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, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0148] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0149] 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.

[0150] 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.

[0151] 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 valve core, characterized in that, include: The body defines at least one switching channel, each of the switching channels having a communication port; A sealing rib, the sealing rib protruding from the surface of the body, and the sealing rib comprising: A first sealing rib is arranged around the communication opening. The outer peripheral wall of the first sealing rib includes a first sidewall and a first transition wall. There are multiple first sidewalls, and a first transition wall is provided between two adjacent first sidewalls. The inner peripheral wall of the first sealing rib includes a second sidewall and a second transition wall. There are multiple second sidewalls, and a second transition wall is provided between two adjacent second sidewalls. The radius of the first transition wall is R1, and the radius of the second transition wall is R2. R1 / (L11+L12)≥0.07 and / or R2 / (L21+L22)≥0.07, so that the corner portion of the first sealing rib can better contact the inner wall of the housing, thereby increasing the contact surface pressure between the corner portion of the first sealing rib and the inner wall of the housing. The uniform distribution of the sealing ribs makes the contact sealing surface pressure between the first sealing rib and the inner wall of the housing more uniform, achieving a tight seal between the valve core and the housing. L11 is the minimum length of the two adjacent first sidewalls corresponding to the first transition wall; L12 is the sum of the lengths of the two first transition walls at both ends of the first sidewall corresponding to L11 in a first direction, where the first direction is the length direction of the first sidewall corresponding to L11; L21 is the minimum length of the two adjacent second sidewalls corresponding to the second transition wall; L22 is the sum of the lengths of the two second transition walls at both ends of the second sidewall corresponding to L21 in a second direction, where the second direction is the length direction of the second sidewall corresponding to L21; and / or... The second sealing rib is disposed between two adjacent communication ports. The outer peripheral wall of the second sealing rib includes a third side wall and a third transition wall. There are multiple third side walls, and a third transition wall is provided between two adjacent third side walls. The radius of the third transition wall is R3, and R3 / (L31+L32)≥0.07, so that the corresponding corner portion of the second sealing rib can better contact the inner wall of the housing, improve the uniformity of the contact surface pressure distribution between the corner portion of the second sealing rib and the inner wall of the housing, and make the contact sealing surface pressure distribution between the second sealing rib and the inner wall of the housing more uniform, so as to achieve a tight seal between the valve core and the housing. L31 is the minimum value of the length of the two adjacent third side walls corresponding to the third transition wall, and L32 is the sum of the lengths of the two third transition walls at both ends of the third side wall corresponding to L31 in a third direction. The third direction is the length direction of the third side wall corresponding to L31.

2. The valve core according to claim 1, characterized in that, The sealing ribs include a first sealing rib, 0.15≤R1 / (L11+L12)≤0.3, and / or, R2 / (L21+L22)≤0.

2.

3. The valve core according to claim 2, characterized in that, 0.2≤R1 / (L11+L12)≤0.27, and / or 0.1≤R2 / (L21+L22)≤0.

18.

4. The valve core according to claim 1, characterized in that, The sealing rib includes a first sealing rib, the body includes a cylindrical portion, the switching channel is located inside the cylindrical portion, the connecting port is formed on the peripheral wall of the cylindrical portion, the first sealing rib is formed into a square ring structure, and the width direction of the first sealing rib is parallel to the axial direction of the cylindrical portion, (L11+L12) is the dimension of the outer peripheral wall of the first sealing rib in the axial direction of the cylindrical portion, and (L21+L22) is the dimension of the inner peripheral wall of the first sealing rib in the axial direction of the cylindrical portion.

5. The valve core according to any one of claims 1-4, characterized in that, The sealing rib includes a second sealing rib, with a value of 0.15 ≤ R3 / (L31 + L32) ≤ 0.

3.

6. The valve core according to claim 5, characterized in that, 0.2≤R3 / (L31+L32)≤0.

27.

7. The valve core according to any one of claims 1-4, characterized in that, The sealing rib includes a second sealing rib, and at least one groove is formed on the side of the second sealing rib facing away from the body. The peripheral wall of the groove includes a fourth side wall and a fourth transition wall. There are multiple fourth side walls, and a fourth transition wall is provided between two adjacent fourth side walls. The radius of the fourth transition wall is R4, R4 / (L41+L42)≥0.07, where L41 is the minimum length of the two adjacent fourth side walls corresponding to the fourth transition wall, and L42 is the sum of the lengths of the two fourth transition walls at both ends of the fourth side wall corresponding to L41 in the fourth direction. The fourth direction is the length direction of the fourth side wall corresponding to L41.

8. The valve core according to claim 7, characterized in that, R4 / (L41+L42)≤0.

2.

9. The valve core according to claim 8, characterized in that, 0.1≤R4 / (L41+L42)≤0.

18.

10. The valve core according to claim 7, characterized in that, The grooves arranged at intervals along the fifth direction constitute a groove group. In the fifth direction, the radius of the fourth transition wall at the ends of the two outermost grooves of the groove group that are far apart from each other is R41, and the radius of the remaining fourth transition walls of the groove group is R42, where R41 < R42.

11. The valve core according to claim 7, characterized in that, The sealing rib includes a second sealing rib, the body includes a cylindrical portion, the switching channel is located inside the cylindrical portion, the connecting port is formed on the peripheral wall of the cylindrical portion, the second sealing rib is formed into a square ring structure, and the width direction of the second sealing rib is parallel to the axial direction of the cylindrical portion, (L31+L32) is the dimension of the outer peripheral wall of the second sealing rib in the axial direction of the cylindrical portion, and (L41+L42) is the dimension of the peripheral wall of the groove in the axial direction of the cylindrical portion.

12. The valve core according to any one of claims 1-4, characterized in that, The sealing ribs include a first sealing rib and a second sealing rib. The body defines a plurality of switching channels. The plurality of switching channels include a first switching channel and a second switching channel that are spaced apart. The first sealing rib is arranged around the communication port of the first switching channel, and the second sealing rib is arranged between two adjacent communication ports of the second switching channel.

13. A multi-way valve, characterized in that, The device includes a housing and a valve core according to any one of claims 1-12, wherein the housing is provided with a flow passage, the valve core is movably disposed within the housing, and the switching flow channel is adapted to communicate with the corresponding flow passage.

14. The multi-way valve according to claim 13, characterized in that, The flow passage has at least three holes, and the switching channel is configured such that different flow passages are switched to be connected.

15. The multi-way valve according to claim 13, characterized in that, It also includes a sealing element, which is located between the inner wall of the housing and the valve core. The sealing element has clearance holes formed on it, and the clearance holes are arranged in a one-to-one correspondence with the flow passage holes. The sealing element includes a sealing part and a wear-resistant part, and the wear-resistant part is located on the side surface of the sealing part facing the sealing rib.

16. 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 multi-way valve, wherein the multi-way valve is any one of claims 1-15, the multi-way valve is disposed on the manifold, and the plurality of flow channels are respectively connected to the plurality of flow through holes, and the valve core rotates to control the multiple flow channels to switch connections to control the thermal management system to switch modes.

17. A vehicle, characterized in that, Includes the multi-way valve according to claim 16.

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