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 valve core comprises a valve core which defines at least one switching flow channel, the valve core has a sealing fitting surface, each switching flow channel penetrates through the sealing fitting surface to form a communication port, the sealing fitting surface comprises a first side surface extending along a first direction and a second side surface extending along a second direction, the first side surface and the second side surface intersect to form a corner, at least one corner of the sealing fitting surface has a first transition round corner corresponding to the communication port, the radius of the first transition round corner is R1, 2*R1 / (L1+L2) is greater than or equal to 0.85, L1 is the width of the first side surface in the direction perpendicular to the first direction, L2 is the width of the second side surface in the direction perpendicular to the second direction, and the first direction and the second direction intersect. According to the valve core, the uniformity of the contact sealing surface pressure between the sealing fitting surface and other components of the valve body can be improved, and the sealing performance between the valve core and other components of the valve body 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] In related technologies, a sealing element is provided between the valve core and the housing inside a multi-way valve to seal the flow path between the valve core and the valve housing. However, the valve core structure, which directly contacts the sealing element or housing to produce a sealing effect, has not been designed. Furthermore, the contact area between the valve core and the sealing element, as well as the movement of the valve core relative to the sealing element, also affect the sealing effect, thus requiring further optimization design. 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 can improve the uniformity of pressure distribution on the contact sealing surface between the sealing mating surface and other components of the valve body, thereby improving the sealing performance between the valve core and other components of the valve body.

[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, the valve core defines at least one switching channel, the valve core has a sealing mating surface, each of the switching channels passing through the sealing mating surface to form a communication port, the sealing mating surface including a first side extending along a first direction and a second side extending along a second direction, the first side and the second side intersecting to form a corner, at least one corner of the sealing mating surface having a first transition fillet corresponding to the communication port, the radius of the first transition fillet being R1, 2*R1 / (L1+L2)≥0.85, L1 being the width of the first side perpendicular to the first direction, L2 being the width of the second side perpendicular to the second direction, the first direction and the second direction intersecting.

[0008] According to the valve core of the present invention, the radius of the first transition fillet is R1, and satisfies 2*R1 / (L1+L2)≥0.85, so that the edge portion at the corner corresponding to the first transition fillet can better contact the inner wall of the housing, and each part at the corner can better contact the inner wall of the housing, thereby improving the uniformity of the contact sealing surface pressure between the sealing mating surface and the inner wall of the housing, so that the sealing mating surface forms a complete and relatively uniform sealing surface pressure at the connection port, thereby improving the sealing effect on the connection port.

[0009] In some embodiments, 1.28 ≤ 2*R1 / (L1+L2) ≤ 2.0.

[0010] In some embodiments, the sealing mating surface is further formed with a first groove, which is located at the connection position of the first side and the second side and is spaced apart from the first transition fillet.

[0011] In some embodiments, the sealing mating surface is further formed with a second groove, and the communication port is provided with the second groove on at least one side in the first direction and / or the second direction, and the second groove is spaced apart from the communication port.

[0012] In some embodiments, the sealing mating surface is located on a cylindrical surface, a plurality of the communication ports are spaced apart along the circumference of the cylindrical surface, and a second groove is provided between two adjacent communication ports along the circumference of the cylindrical surface.

[0013] In some embodiments, a plurality of communication ports arranged circumferentially along the cylindrical surface constitute a communication port group, and multiple communication port groups are spaced apart axially along the cylindrical surface, with at least two adjacent communication port groups having their communication ports alternately arranged circumferentially on the cylindrical surface.

[0014] In some embodiments, the corner having the first transition fillet also has a second transition fillet corresponding to the second groove, the radius of the second transition fillet being R2, 2*R2 / (L3+L4)≥0.85, L3 being the width of the first side surface corresponding to one of the first transition fillets adjacent to the second transition fillet in the direction perpendicular to the first direction, and L4 being the width of the second side surface corresponding to the other first transition fillet adjacent to the second transition fillet in the direction perpendicular to the second direction.

[0015] In some embodiments, one of the first side surfaces and two of the second side surfaces intersect to form a first corner, and two of the first side surfaces and two of the second side surfaces intersect to form a second corner, wherein the radius of the first transition fillet at the first corner is smaller than the radius of the second transition fillet at the second corner.

[0016] In some embodiments, the sealing mating surface includes a plurality of first mating surfaces extending along the first direction and a plurality of second mating surfaces extending along the second direction. The first mating surfaces include a plurality of first side surfaces arranged sequentially along the first direction, and the second mating surfaces include a plurality of second side surfaces arranged sequentially along the second direction.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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 valve core.

[0021] 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 the multi-way valve of 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 through 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.

[0022] According to an embodiment of the present invention, the stability of the thermal management system is improved by employing the multi-way valve described above.

[0023] 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.

[0024] The vehicle according to an embodiment of the present invention improves its overall performance by employing the above-described thermal management system.

[0025] 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

[0026] 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:

[0027] Figure 1 This is a schematic diagram of a valve core according to some embodiments of the present invention;

[0028] Figure 2 yes Figure 1A partial enlarged view of the valve core shown;

[0029] Figure 3 yes Figure 1 Another schematic diagram of the valve core shown;

[0030] Figure 4 yes Figure 1 The cross-sectional view of the valve core shown;

[0031] Figure 5 This is yet another schematic diagram of a valve core according to some embodiments of the present invention;

[0032] Figure 6 This is another schematic diagram of a valve core according to some embodiments of the present invention;

[0033] Figure 7 This is an exploded view of a multi-way valve according to some embodiments of the present invention;

[0034] Figure 8 yes Figure 7 A schematic diagram of the casing shown;

[0035] Figure 9 yes Figure 7 A schematic diagram of the seal shown;

[0036] Figure 10 This is a cross-sectional view of a multi-way valve according to some embodiments of the present invention;

[0037] Figure 11 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0038] Figure label:

[0039] Vehicle 1000, thermal management system 300, multi-way valve 200, housing 101, flow port 101a, assembly cavity 101b, housing inner wall 101c, seal 102, clearance hole 102a, sealing part 1021, wear-resistant part 1022, cover plate 103, drive component 104.

[0040] Valve core 100, switching flow channel 10a, connecting port 10b

[0041] Sealing mating surface 1, corner 1a, first transition fillet 1b, second transition fillet 1c, first corner 1d, second corner 1e, first mating surface 11, first side surface 111, second mating surface 12, second side surface 121, first groove 13, second groove 14. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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 is adapted to be movably disposed within the housing 101 of a valve body (e.g., a multi-way valve 200).

[0045] like Figures 1-4 As shown, the valve core 100 defines at least one switching flow channel 10a. The valve core 100 has a sealing mating surface 1. When the valve core 100 is used in the valve body, the sealing mating surface 1 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 mating surface 1 is used to achieve a seal between the valve core 100 and the housing 101 as an example. At this time, the sealing mating surface 1 is adapted to contact and seal with the corresponding wall surface of the housing 101. After reading the following technical solution, those skilled in the art can easily understand that the sealing mating surface 1 is used to achieve a seal between the valve core 100 and other components such as the seal 102. For example, the sealing mating surface 1 is adapted to contact and seal with the corresponding wall surface of the seal 102.

[0046] Each switching channel 10a penetrates the sealing mating surface 1 to form a communication port 10b, that is, the switching channel 10a communicates with the corresponding communication port 10b. The sealing mating surface 1 is adapted to fit against the inner wall 101c of the housing to achieve a seal of the communication port 10b. The sealing mating surface 1 includes a first side surface 111 extending along a first direction and a second side surface 121 extending along a second direction. The first side surface 111 and the second side surface 121 intersect to form a corner 1a. At least one corner 1a of the sealing mating surface 1 has a first transition fillet 1b corresponding to the communication port 10b. The first transition fillet 1b is located on the side of the corner 1a facing the corresponding communication port 10b.

[0047] The radius of the first transition fillet 1b is R1, where 2*R1 / (L1+L2)≥0.85. L1 is the width of the first side surface 111 perpendicular to the first direction, and L2 is the width of the second side surface 121 perpendicular to the second direction. The first and second directions intersect, meaning the extension directions of the first side surface 111 and the second side surface 112 intersect, causing the first side surface 111 and the second side surface 112 to intersect. The first transition fillet 1b causes the first side surface 111 and the second side surface 121 to bend and connect at corner 1a, ensuring a reasonable transition between the first side surface 111 and the second side surface 121 at corner 1a. This allows the edge portion at corner 1a corresponding to the first transition fillet 1b to better connect with the inner wall 101 of the shell. c-contact facilitates a relatively consistent and tight contact between the edge portion of the first transition fillet 1b at corner 1a and the center portion of corner 1a and the inner wall 101c of the housing. This effectively reduces the difference between the contact surface pressure between the edge of corner 1a and the inner wall 101c of the housing and the contact surface pressure between the center of corner 1a and the inner wall 101c of the housing. It also effectively reduces the difference between the contact surface pressure between the edge of corner 1a and the inner wall 101c of the housing and the contact surface pressure between the first side surface 111 and the inner wall 101c of the housing, and effectively reduces the difference between the contact surface pressure between the edge of corner 1a and the inner wall 101c of the housing and the contact surface pressure between the second side surface 112 and the inner wall 101c of the housing.

[0048] Therefore, each part of the area corresponding to the corner 1a of the first side 111 and the second side 121 makes better contact with the inner wall 101c of the housing, so that the corner 1a and the inner wall 101c of the housing form a relatively consistent and tight contact. This results in a relatively uniform contact sealing surface pressure between the sealing mating surface 1 and the inner wall 101c of the housing. That is, the contact sealing surface pressure between the corner 1a and the inner wall 101c of the housing, and the contact sealing surface pressure between the first side 111 and the second side 121 and the inner wall 101c of the housing are relatively consistent, so that the sealing mating surface 1 forms a complete and relatively uniform sealing surface pressure around the communication port 10b, resulting in a good sealing effect on the communication port 10b. Optionally, the value of 2*R1 / (L1+L2) can be 0.85, 0.9, 0.94, etc.

[0049] In other words, the radius R1 of the first transition fillet 1b satisfies: 2*R1 / (L1+L2)≥0.85, so that the radius of the first transition fillet 1b is within a reasonable range. This avoids the difference in the degree of contact between the edge part of the first transition fillet 1b and the center part of the corner 1a and the inner wall 101c of the housing due to the failure of the edge part of the first transition fillet 1b to have good contact with the inner wall 101c of the housing. This improves the uniformity of the contact surface pressure between the sealing mating surface 1 and the inner wall 101c of the housing.

[0050] In related technologies, the radius R1 of the first transition fillet does not satisfy: 2*R1 / (L1+L2)≥0.85. When the corner contacts the inner wall of the housing to form a sealing surface, the corner is affected by the edge of the first transition fillet, making the contact degree between the center part of the corner and the inner wall of the housing better than the contact degree between the edge part of the corner (i.e., the part of the corner adjacent to the first transition fillet) and the inner wall of the housing. As a result, the contact surface pressure of the center part of the corner is larger than that of the edge part of the corner, causing uneven contact surface pressure between the corner and the inner wall of the housing. This easily leads to the contact surface pressure of the edge part of the corner being much smaller than that of the center part of the corner, resulting in a higher risk of leakage at the location of the sealing surface pressure (such as the edge part of the corner), which is not conducive to the sealing of the connection port by the sealing surface.

[0051] For example, in related technologies, the radius R1 of the first transition fillet is too small, the minimum surface pressure between the corner and the inner wall of the housing is 0.46 MPa, and the surface pressure between the first and second sides and the inner wall of the housing is about 1 MPa. The contact sealing surface pressure between the sealing mating surface and the inner wall of the housing is uneven, which poses a risk of leakage. In this application, with R1=3.5mm, L1=2.5mm, L2=2.0mm, 2*R1 / (L1+L2)=1.5556≥0.85, at corner 1a The minimum surface pressure between the sealing surface 1 and the inner wall 101c of the housing is 1.02 MPa. The surface pressure between the first side 111 and the second side 121 and the inner wall 101c of the housing is about 1 MPa. This makes the contact sealing surface pressure between the first side 111, the second side 121 and the corner 1a and the inner wall 101c of the housing relatively uniform. This improves the uniformity of the contact sealing surface pressure distribution between the sealing mating surface 1 and the inner wall 101c of the housing, and achieves the purpose of enhancing the sealing effect of the sealing mating surface 1.

[0052] For example, in Figures 1-2In the example, the first direction is the axial direction of the valve core 100, and the second direction is the circumferential direction of the valve core 100. The valve core 100 has multiple connecting ports 10b, which are square in shape. The sealing mating surface 1 surrounds the connecting ports 10b. Each connecting port 10b can correspond to two first side surfaces 111, two second side surfaces 121, and four corners 1a. Each corner 1a connects to the adjacent first side surface 111 and second side surface 121. The walls of the connecting ports 10b at the four corners 1a are all first transition fillets 1b with a radius of R1. The first side surface 111... 11. The circumferential width of the valve core 100 is L1 (for example, it can be understood as the arc width of the first side 111 in the circumferential direction of the valve core 100), and the axial width of the second side 121 in the valve core 100 is L2. Then, each first transition fillet 1b and the connected first side 111 and second side 121 satisfy: 2*R1 / (L1+L2)≥0.85, so that the sealing mating surface 1 and the inner wall 101c of the housing form a relatively uniform contact sealing surface pressure, thereby making the sealing mating surface 1 form a complete and relatively uniform sealing surface pressure around the connecting port 10b, so as to ensure the sealing performance of the connecting port 10b. Of course, the shape of the connecting port 10b is not limited to a square, for example, it can also be other polygons, etc.; the first direction and the second direction are not limited to being perpendicular, and the first direction and the second direction can also be at an acute angle.

[0053] Optionally, the number of connecting ports 10b is not limited. The number of connecting ports 10b can be designed according to the working requirements of the valve core 100. For example, there can be one, two, or more connecting ports 10b. Of course, when there are multiple connecting ports 10b, the number, location, and arrangement of the multiple connecting ports 10b can be designed according to the working requirements of the valve core 100. The radii of the multiple first transition fillets 1b corresponding to the connecting ports 10b can be the same or different. Of course, the radii of the first transition fillets 1b corresponding to different connecting ports 10b can be the same or different.

[0054] According to the valve core 100 of the present invention, the radius of the first transition fillet 1b is R1, and satisfies 2*R1 / (L1+L2)≥0.85, so that the edge portion of the first transition fillet 1b at the corner 1a contacts the inner wall 101c of the housing better, and each portion of the surface of the corner 1a facing the inner wall 101c of the housing better contacts the inner wall 101c of the housing. Thus, the sealing mating surface 1 and the inner wall 101c of the housing form a relatively uniform contact sealing surface pressure, so that the sealing mating surface 1 forms a complete and relatively uniform sealing surface pressure around the communication port 10b, thereby forming a good sealing effect on the communication port 10b.

[0055] In some embodiments, such as Figure 2As shown, 1.28≤2*R1 / (L1+L2)≤2.0, which makes the transition of the first transition fillet 1b more reasonable, further makes the corner 1a and the inner wall 101c of the shell more consistent and tight, and further improves the uniformity of the pressure distribution of the contact sealing surface between the sealing mating surface 1 and the inner wall 101c of the shell, so as to achieve the sealing of the corresponding communication port 10b.

[0056] Optionally, 2*R1 / (L1+L2) can be 1.28, 1.31, 1.45, 1.61, 1.84, or 2.0, etc.

[0057] The inventors discovered that the radius of the first transition fillet 1b cannot be too large to avoid increasing the width at the corner 1a, which would interfere with the connection port 10b, affecting the area and function of the connection port 10b. Secondly, it avoids excessively increasing the area at the corner 1a, which would increase the friction between the valve core 100 and the housing 101, and the torque required to drive the valve core 100 to move (e.g., rotate). The radius of the first transition fillet 1b cannot be too small, as this would hinder the formation of a consistent contact area between the corner 1a and the inner wall 101c of the housing, resulting in uneven pressure on the sealing surface 1 and the inner wall 101c of the housing, increasing the risk of leakage.

[0058] In some embodiments, such as Figure 5 As shown, the sealing mating surface 1 also has a first groove 13. The first groove 13 is located at the connection position of the first side surface 111 and the second side surface 121, and the first groove 13 is spaced apart from the first transition fillet 1b. The first groove 13 can be spaced apart on the side of the first transition fillet 1b facing away from the corresponding communication port 10b, so as to appropriately reduce the contact area between the connection position of the first side surface 111 and the second side surface 121 and the inner wall 101c of the housing. Thus, under the premise of achieving reliable sealing of the sealing mating surface 1, the contact area between the sealing mating surface 1 and the inner wall 101c of the housing is reduced, which is beneficial to reduce the friction between the valve core 100 and the housing 101 and the force driving the valve core 100 to move (e.g., rotate).

[0059] The shape of the first groove 13 is not limited; for example, the first groove 13 can be circular, elliptical, or polygonal. However, the longest distance between the walls of the first groove 13 is less than the minimum width between the first side surface 111 and the second side surface 121, i.e., the longest distance between the walls of the first groove 13 is less than min{L1, L2}, to avoid the first groove 13 affecting the seal at the connection point of the first side surface 111 and the second side surface 121, thus ensuring the sealing performance of the sealing mating surface 1.

[0060] Furthermore, the depth of the first groove 13 is less than the thickness of the portion of the valve core 100 located at the junction of the first side surface 111 and the second side surface 121. Optionally, the depth of the first groove 13 is no greater than 3 mm.

[0061] In some embodiments, such as Figure 1 As shown, the sealing mating surface 1 also has a second groove 14. The communication port 10b has a second groove 14 on at least one side in the first direction and / or the second direction. The second groove 14 is spaced apart from the communication port 10b, which can appropriately reduce the contact area between the sealing mating surface 1 and the inner wall 101c of the housing. This helps to reduce the friction between the valve core 100 and the housing 101 and the force that drives the valve core 100 to move (e.g., rotate). The setting of the second groove 14 will not affect the sealing effect of the sealing mating surface 1, especially it will not affect the sealing effect of the sealing mating surface 1 at the corner 1a position.

[0062] It can be seen that, for a single connecting port 10b, the connecting port 10b has a second groove 14 on at least one side in the first direction, and / or the connecting port 10b has a second groove 14 on at least one side in the second direction. The depth of the second groove 14 is less than the thickness at the corresponding position of the valve core 100, that is, the second groove 14 is not connected to any switching flow channel 10a of the valve core 100.

[0063] Optionally, the opening size of the second groove 14 may be the same as or different from the opening size of the connecting port 10b.

[0064] Optionally, the number of second grooves 14 is not limited. The number of second grooves 14 can be designed according to the working needs of the valve core 100. For example, there can be one, two, or more second grooves 14. Of course, when there are multiple second grooves 14, the arrangement of multiple second grooves 14 can be designed according to the working needs of the valve core 100. For example, multiple second grooves 14 can be arranged sequentially along the circumference of the valve core 100, or multiple second grooves 14 can be arranged sequentially along the axial direction of the valve core 100, or multiple second grooves 14 can be arranged sequentially along both the circumference and axial direction of the valve core 100.

[0065] It is understandable that the second groove 14 formed on the sealing mating surface 1 can be designed according to the working requirements of the valve core 100, that is, the sealing mating surface 1 can form the second groove 14 or not form the second groove 14.

[0066] For example, in Figure 1 and Figure 3 In the example, the valve core 100 has a plurality of communication ports 10b and a plurality of second grooves 14. The shape and size of the communication ports 10b are the same as the shape of the second grooves 14, and the size of the communication ports 10b are the same as the size of the second grooves 14.

[0067] In some embodiments, such as Figure 1 As shown, the sealing mating surface 1 is located on the cylindrical surface, and multiple connecting ports 10b are spaced apart along the circumference of the cylindrical surface. A second groove 14 is provided between two adjacent connecting ports 10b along the circumference of the cylindrical surface to adapt to the working needs of the valve core 100. At the same time, it helps to reduce the contact area between the sealing mating surface 1 and the housing 101, reduce the friction between the valve core 100 and the housing 101, and reduce the energy consumption for driving the valve core 100 to move. Meanwhile, the second groove 14 will not affect the sealing effect of two adjacent connecting ports 10b.

[0068] It should be noted that the sealing mating surface 1 is located on a cylindrical surface, but this does not mean that the sealing mating surface 1 is a cylindrical surface. Rather, it means that all positions of the sealing mating surface 1 are located on the same cylindrical surface.

[0069] Optionally, a second groove 14 is provided between two adjacent connecting ports 10b along the axial direction of the cylindrical surface. The number of second grooves 14 provided between two adjacent connecting ports 10b can be one or more.

[0070] Of course, in some other embodiments, the sealing mating surface 1 may not have the second groove 14.

[0071] In some embodiments, such as Figure 1 As shown, multiple connecting ports 10b arranged circumferentially along the cylindrical surface constitute a connecting port group. Multiple connecting port groups are spaced apart axially along the cylindrical surface. At least two adjacent connecting port groups have their connecting ports 10b alternately arranged circumferentially on the cylindrical surface to adapt to the working needs of the valve core 100. This arrangement of multiple connecting ports 10b according to a certain pattern satisfies the design requirements such as the movement cooperation between the valve core 100 and the housing 101 to achieve the switching connection of the flow channel 10a. At the same time, it is beneficial to achieve the dispersed arrangement of multiple connecting ports 10b, so that the frictional resistance of the sealing mating surface 1 is relatively balanced, which is beneficial to improving the uniformity of the sealing effect of the sealing mating surface 1.

[0072] For example, two adjacent sets of connecting ports are designated as the first connecting port group and the second connecting port group, respectively. The first connecting port group and the second connecting port group each include multiple connecting ports 10b spaced apart along the circumferential direction. In the circumferential direction, a connecting port 10b of the second connecting port group is provided between two adjacent connecting ports 10b of the first connecting port group, and a connecting port 10b of the first connecting port group is provided between two adjacent connecting ports 10b of the second connecting port group.

[0073] In some embodiments, such as Figure 2As shown, the second groove 14 is located between two adjacent connecting openings 10b spaced apart circumferentially. At the corner 1a with the first transition fillet 1b, there is also a second transition fillet 1c corresponding to the second groove 14. The second transition fillet 1c is located on the side of the corner 1a facing the second groove 14. The radius of the second transition fillet 1c is R2, 2*R2 / (L3+L4)≥0.85, where L3 is the width of the first side 111 corresponding to one of the first transition fillets 1b adjacent to the second transition fillet 1c in the first direction perpendicular to the first direction, and L4 is the width of the second side 121 corresponding to the other first transition fillet 1b adjacent to the second transition fillet 1c in the second direction perpendicular to the second direction. The above-mentioned arrangement of the second transition fillet 1c ensures a reasonable transition of the second groove 14 at the corner 1a, making the second transition fillet... The edge portion corresponding to corner 1a of 1c makes better contact with the inner wall 101c of the housing, which is conducive to forming a consistent and tight contact between corner 1a and the inner wall 101c of the housing. That is, the difference between the contact sealing surface pressure between the edge portion of corner 1a at the second transition rounded corner 1c and the inner wall 101c of the housing and the contact sealing surface pressure between the center portion of corner 1a and the inner wall 101c of the housing is small. As a result, each part of corner 1a makes better contact with the inner wall 101c of the housing, so that the contact sealing surface pressure distribution between corner 1a and the inner wall 101c of the housing is more uniform. This improves the uniformity of the sealing surface pressure between the sealing mating surface 1 at the entire edge of the second groove 14 and the inner wall 101c of the housing, so that the openings formed on the wall surface of housing 101 (such as the flow through hole 101a in the following text) form a good sealing effect.

[0074] Optionally, 2*R2 / (L3+L4) can take values ​​such as 0.85, 0.9, 0.94, etc.

[0075] In other words, the radius R2 of the second transition fillet 1c satisfies: 2*R2 / (L3+L4)≥0.85, so that the radius of the second transition fillet 1c is within a reasonable range. This avoids the situation where the edge part of the second transition fillet 1c at the corner 1a fails to have good contact with the inner wall 101c of the housing, resulting in different contact degrees between the edge part of the second transition fillet 1c and the center part of the corner 1a with the inner wall 101c of the housing. This improves the uniformity of the contact surface pressure between the sealing mating surface 1 and the inner wall 101c of the housing.

[0076] In related technologies, the radius R2 of the second transition fillet does not satisfy: 2*R2 / (L3+L4)≥0.85. When the corner contacts the inner wall of the housing to form a sealing surface, the corner is affected by the edge of the second transition fillet, making the contact degree between the center part of the corner and the inner wall of the housing better than the contact degree between the edge part of the corner (i.e., the part of the corner adjacent to the second transition fillet) and the inner wall of the housing. As a result, the contact surface pressure of the center part of the corner is larger than that of the edge part of the corner, resulting in uneven contact surface pressure between the corner and the inner wall of the housing. This easily leads to the contact surface pressure of the edge part of the corner being much smaller than that of the center part of the corner, thus causing a higher risk of leakage at the sealing mating surface in the position with lower sealing surface pressure (such as the edge part of the corner).

[0077] For example, in related technologies, the radius R2 of the second transition fillet is too small, the minimum surface pressure between the corner and the inner wall 101c of the housing is 0.46 MPa, and the surface pressure between the first side and the second side, and between the two and the inner wall of the housing is about 1 MPa. The contact sealing surface pressure between the sealing mating surface and the inner wall 101c of the housing is uneven, which poses a risk of leakage. In this application, with R2=3.5mm, L3=2.5mm, L4=2.0mm, 2*R2 / (L3+L4)=1.5556≥0.85, the minimum surface pressure between the corner 1a and the inner wall 101c of the housing is 1.02 MPa, and the uniform surface pressure between the first side 111 and the second side 121, and between the two and the inner wall 101c of the housing is about 1 MPa. This makes the sealing mating surface 1 and the inner wall 101c of the housing form a relatively uniform contact sealing surface pressure, thereby achieving the purpose of enhancing the sealing effect of the sealing mating surface 1.

[0078] For example, in Figure 2 In the example, the valve core 100 has multiple second grooves 14, which are square in shape. The sealing mating surface 1 surrounds each second groove 14. Each second groove 14 corresponds to two first side surfaces 111, two second side surfaces 121, and four corners 1a. Each corner 1a connects to the adjacent first side surface 111 and second side surface 121. Each of the four corners 1a has a second transition fillet 1c corresponding to the second groove 14. The radius of the second transition fillet 1c is R2. The width of the first side surface 111 in the circumferential direction of the valve core 100 is L3, and the width of the second side surface 121 in the axial direction of the valve core 100 is L4. Then, each second transition fillet 1c and the connected first side surface 111 and second side surface 121 satisfy: 2*R2 / (L3+L4)≥0.85, so that the sealing mating surface 1 and the inner wall 101c of the housing form a relatively uniform contact sealing surface pressure, thereby making the sealing mating surface 1 form a complete and relatively uniform sealing surface pressure in the second groove 14.

[0079] Optionally, the radius R1 and the radius R2 of the first transition fillet 1b can be the same or different. Of course, the radius R1 and the radius R2 of the first transition fillet 1b can be partially the same or partially different.

[0080] In some embodiments, such as Figure 6 As shown, a first side 111 and two second side 121 intersect to form a first corner 1d, and the two first side 111 and two second side 121 intersect to form a second corner 1e. The radius of the first transition fillet 1b at the first corner 1d is smaller than the radius of the first transition fillet 1b at the second corner 1e.

[0081] The inventors discovered that when the valve core 100 is used in the valve body, the edge portion and the center portion of the first corner 1d have different degrees of contact with the inner wall 101c of the housing, resulting in different surface pressures between the two portions of the first corner 1d and the inner wall 101c of the housing. Similarly, the edge portion and the center portion of the second corner 1e have different degrees of contact with the inner wall 101c of the housing, resulting in different surface pressures between the two portions of the second corner 1e and the inner wall 101c of the housing. Furthermore, the surface pressure of the edge portion of the second corner 1e is smaller than that of the center portion of the second corner 1d. The uneven distribution of surface pressure at the center of corner 1e is greater than that at the first corner 1a. In other words, the unevenness of surface pressure on the two parts of the second corner 1e is greater than that on the two parts of the first corner 1d. To address this, the radius of the first transition fillet 1b at the second corner 1e is set to be greater than that of the first transition fillet 1b at the first corner 1d, thereby improving the uniformity of the contact surface pressure distribution at the first corner 1d and the second corner 1e, and thus improving the uniformity of the contact surface pressure distribution on the sealing mating surface 1.

[0082] In some embodiments, a first groove 13 is formed at at least one of the first corner 1d and the second corner 1e.

[0083] In some embodiments, such as Figure 6 As shown, at least one of the first corner 1d and the second corner 1e has a second transition fillet 1c corresponding to the second groove 14. At this time, the radius of all transition fillets at the second corner 1e (which may include only the first transition fillet 1b, or the transition fillet may include both the first and second transition fillets 1c) is greater than the radius of all transition fillets at the first corner 1d (which may include only the first transition fillet 1b, or the transition fillet may include both the first and second transition fillets 1c).

[0084] For example, in Figure 6In the example, the first and second directions are perpendicular. The valve core 100 defines multiple connecting ports 10b and multiple second grooves 14. One first side 111 and two second side 121 intersect to form a first corner 1d, which is T-shaped. The two first side 111 and two second side 121 intersect to form a second corner 1e, which is +-shaped and located between the two first corners 1d. The total number of transition fillets corresponding to the first corner 1d is 2, and the total number of transition fillets corresponding to the second corner 1e is 4. The radius of the transition fillet corresponding to the second corner 1e is greater than the radius of the transition fillet corresponding to the first corner 1d. Alternatively, the first and second directions can intersect at an acute angle.

[0085] In some embodiments, such as Figure 1 As shown, the sealing mating surface 1 includes a plurality of first mating surfaces 11 extending along a first direction and a plurality of second mating surfaces 12 extending along a second direction. The first mating surface 11 includes a plurality of first side surfaces 111 arranged sequentially along the first direction, and the second mating surface 12 includes a plurality of second side surfaces 121 arranged sequentially along the second direction, so that the sealing mating surface 1 has a roughly mesh structure, so that the frictional force between the sealing mating surface 1 and the housing 101 is more evenly distributed, and at the same time, it is easy to flexibly adapt to the adjustment requirements of the valve body.

[0086] For example, in Figure 1 In the example, the sealing mating surface 1 is located on the cylindrical surface, and the sealing mating surface 1 includes a plurality of first mating surfaces 11 extending axially along the valve core 100 and a plurality of second mating surfaces 12 extending circumferentially along the valve core 100. The first mating surfaces 11 and the second mating surfaces 12 are interwoven into a mesh structure to realize the setting of a plurality of communication ports 10b and a plurality of second grooves 14. Adjacent first side surfaces 111 and second side surfaces 121 intersect to form a corner 1a. The communication port 10b corresponding to the corner 1a has a first transition fillet 1b, and the second groove 14 corresponding to the corner 1a has a second transition fillet 1c.

[0087] According to a second aspect of the present invention, a multi-way valve 200 includes a housing 101 and a valve core 100 according to the second aspect of the present invention. The housing 101 is provided with a flow passage 101a, and the valve core 100 is movably disposed within the housing 101. The switching flow channel 10a is adapted to communicate with the corresponding flow passage 101a.

[0088] 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.

[0089] For example, refer to Figures 1-4 and Figures 7-10As 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 and communicate with a switching channel for the flow medium. The switching flow channel is adapted to communicate with the corresponding flow through hole 101a. By driving the valve core 100 to rotate, the switching flow channel of the valve core 100 is connected with the corresponding flow through hole 101a, so as to realize the switching function and proportional regulation function of the multi-way valve 200.

[0090] 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 the multi-way valve or flow out of the multi-way valve through the flow through hole 101a, so as to enable the multi-way valve to discharge or draw in the medium to the outside. The medium can be water, antifreeze, or other liquids, which are not limited here.

[0091] Furthermore, the valve core 100 is installed inside the housing 101 and can rotate along its own axis within the housing 101. The valve core 100 is provided with at least one switching flow channel 10a, which is used to communicate with two of the multiple flow through holes 101a. The valve core 100 rotates to switch the communication between the switching flow channel 10a and different flow through holes 101a. When the switching flow channel 10a is connected to different flow through holes 101a, the medium can enter the multi-way valve or flow out of the multi-way valve through the different flow through holes 101a, so that the multi-way valve has different working modes.

[0092] Specifically, the drive unit 104 is located at one end of the housing 101 and is poweredly connected to the valve core 100, and the seal 102 is located at the other end of the housing 101. The drive unit 104 consists of a motor, a reduction gear set and a control circuit board.

[0093] When the multi-way valve 200 is closed, i.e., when the flow passage 11 and the switching channel 21 are not connected, the multi-way valve 200 is in the closed state. When the multi-way valve 200 is working, the driving component 104 drives the valve core 100 to rotate. After the valve core 100 rotates through a certain angle, its switching flow channel 10a and the flow passage 101a begin to connect. As the valve core 100 continues to rotate, the area of ​​connection between the switching flow channel 10a and the flow passage 101a gradually increases, and the flow rate that can pass through also increases. Therefore, by controlling the rotation angle of the valve core 100, the switching of multiple working modes and flow control of the multi-way valve 200 can be realized.

[0094] In some embodiments, such as Figure 1 and Figure 4 As shown, there are at least three flow through holes 101a. The switching flow channel 10a is configured to allow different flow through holes 101a to switch and connect, which can realize the function of the multi-way valve 200 reversing valve, so that the thermal management system with it can switch modes.

[0095] For example, in Figure 1 and Figures 3-4 In the example, the valve core 100 is provided with a plurality of switching channels 10a, including a first switching channel and a second switching channel. The first switching channel is configured such that one of the flow through holes 101a is switched to be connected to at least two flow through holes 101a. The second switching channel is configured such that different flow through holes 101a are switched to be connected. The second switching channel is also configured to change the number of connected flow through holes 101a.

[0096] In some embodiments, such as Figure 7 and 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 a clearance hole 102a, which is provided in a one-to-one correspondence with the flow passage hole 101a. The sealing element 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. The sealing part 1021 can separate the gap between the valve core 100 and the housing 101, which can prevent adjacent flow passage holes 101a from being directly connected, thereby improving the reliability and stability of the multi-way valve 200. Secondly, the wear-resistant part 1022 can reduce the wear of the valve core 100 on the body during rotation, which helps to protect the sealing element 102 and thus extend the service life of the sealing element 102.

[0097] The sealing element 102 is installed between the valve core 100 and the housing 101, and the sealing element 102 contacts both the valve core 100 and the housing 101. The sealing element 102 seals the switching flow channel 10a between the valve core 100 and the housing 101, thereby ensuring that the valve core 100 and the sealing element 102, and the sealing element 102 and the housing 101 are sealed during the rotation of the valve core 100. This prevents the medium inside the switching flow channel 10a formed between the valve core 100 and the housing 101 from leaking into the valve body, which would cause internal leakage and failure of the multi-way valve 200. This also avoids internal mixing of the medium or loss of the regulating function of the multi-way valve 200.

[0098] Furthermore, the wear-resistant part 1022 is made of a material with a low coefficient of friction and wear resistance, such as a fluoroplastic film or polytetrafluoroethylene. This makes the wear-resistant part 1022 wear-resistant and have a low coefficient of friction, thereby reducing the wear of the valve core 100 on the body during rotation and 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 torque of the valve core 100 within a small range.

[0099] 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.

[0100] In other embodiments, the wear-resistant part 1022 is constructed as a coating film, which can be a fluoroplastic film, such as polytetrafluoroethylene, so that the coating film has wear-resistant, lubricating and other properties, which is beneficial to improving its friction and wear performance.

[0101] 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.

[0102] According to a third aspect of the present invention, a thermal management system 300 includes: a manifold, wherein the manifold is provided with a plurality of flow channels for the flow of a medium; a multi-way valve 200, wherein the multi-way valve 200 is the multi-way valve 200 of the second aspect of the present invention described above, the multi-way valve 200 is disposed on the manifold, the plurality of flow channels are respectively connected to a plurality of flow holes 101a, and the valve core 100 rotates to control the switching and connection of the plurality of flow channels to control the thermal management system 300 to perform mode switching.

[0103] 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.

[0104] According to an embodiment of the present invention, the thermal management system 300 improves its stability by employing the multi-way valve 200 described above.

[0105] Optionally, by setting multiple switching channels 10a, at least one switching channel 10a can switch and connect one flow through hole 101a with at least two flow through holes 101a, and at least another switching channel 10a 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 regulation 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.

[0106] 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.

[0107] According to an embodiment of the present invention, the vehicle 1000 improves its overall performance by adopting the thermal management system 300 described above.

[0108] 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.

[0109] The following is for reference. Figures 1-11 The handcart according to an embodiment of the present invention is described in detail with reference to a specific example. It is to be understood that the following description is merely illustrative and not intended to limit the invention in any particular way.

[0110] In this embodiment, as Figures 1-11As shown, the valve core 100 has multiple connecting ports 10b and multiple second grooves 14. Both the connecting ports 10b and the second grooves 14 are square structures, and the opening shapes and sizes of the connecting ports 10b and the second grooves 14 are identical. The multiple connecting ports 10b and the multiple second grooves 14 are arranged in three groups along the axial direction of the valve core 100, with each group containing a total of six connecting ports 10b and second grooves 14, arranged sequentially along the circumference of the valve core 100, so that the sealing mating surface 1 forms a mesh structure. In the axial direction of the valve core 100, the openings away from the assembly cavity 101b... One group consists of three connecting ports 10b and three second grooves 14. The three connecting ports 10b are arranged adjacent to each other along the circumference of the valve core 100, and the three second grooves 14 are arranged adjacent to each other along the circumference of the valve core 100. The middle group of the three groups includes two connecting ports 10b and four second grooves 14. A second groove 14 is provided between each pair of adjacent connecting ports 10b along the circumference of the valve core 100, and three second grooves 14 are provided between each pair of adjacent connecting ports 10b. The group near the opening of the assembly cavity 101b consists of six connecting ports 10b, which are arranged adjacent to each other along the circumference of the valve core 100. The width of the first side surface 111 and the second side surface 121 is the same.

[0111] The valve core 100 has a sealing mating surface 1, which includes a first side surface 111 and a second side surface 121. Each first side surface 111 extends along the axial direction of the valve core 100, and each second side surface 121 extends along the circumferential direction of the valve core 100. A single communication port 10b corresponds to two first side surfaces 111 and two second side surfaces 121, and a single second groove 14 corresponds to two first side surfaces 111 and two second side surfaces 121. One first side surface 111 and two second side surfaces 121 intersect to form a first corner 1d, and two first side surfaces 111 and two second side surfaces 121 intersect to form a second corner 1e.

[0112] The first corner 1d corresponding to the connecting opening 10b and the second corner 1e corresponding to the connecting opening 10b each have a first transition fillet 1b, and the first corner 1d corresponding to the second groove 14 and the second corner 1e corresponding to the second groove 14 each have a second transition fillet 1c. The radius of the first transition fillet 1b is R1, 2*R1 / (L1+L2)≥0.85, L1 is the width of the first side 111 corresponding to the first transition fillet 1b, L2 is the width of the second side 121 corresponding to the first transition fillet 1b, and the radius of the second transition fillet 1c is R2, 2*R2 / (L3+L4)≥0.85, L3 is the width of the first side 111 corresponding to one of the first transition fillets 1b adjacent to the second transition fillet 1c, and L4 is the width of the second side 121 corresponding to the other first transition fillet 1b adjacent to the second transition fillet 1c.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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, The valve core defines at least one switching flow channel. The valve core has a sealing mating surface. Each switching flow channel penetrates the sealing mating surface to form a communication port. The sealing mating surface includes a first side extending along a first direction and a second side extending along a second direction. The first side and the second side intersect to form a corner. At least one corner of the sealing mating surface has a first transition fillet corresponding to the communication port. The radius of the first transition fillet is R1, 2*R1 / (L1+L2)≥0.85, where L1 is the width of the first side perpendicular to the first direction, and L2 is the width of the second side perpendicular to the second direction. The first direction and the second direction intersect.

2. The valve core according to claim 1, characterized in that, 1.28≤2*R1 / (L1+L2)≤2.

0.

3. The valve core according to claim 1, characterized in that, The sealing mating surface also has a first groove, which is located at the connection between the first side and the second side and is spaced apart from the first transition fillet.

4. The valve core according to claim 1, characterized in that, The sealing mating surface is further provided with a second groove, and the communication port is provided with the second groove on at least one side of the first direction and / or the second direction, and the second groove is spaced apart from the communication port.

5. The valve core according to claim 4, characterized in that, The sealing mating surface is located on the cylindrical surface, and a plurality of the communication ports are spaced apart along the circumference of the cylindrical surface. A second groove is provided between two adjacent communication ports along the circumference of the cylindrical surface.

6. The valve core according to claim 5, characterized in that, Multiple connecting ports arranged circumferentially along the cylindrical surface constitute a connecting port group. Multiple connecting port groups are spaced apart axially along the cylindrical surface, and the connecting ports of at least two adjacent connecting port groups are alternately arranged circumferentially on the cylindrical surface.

7. The valve core according to claim 6, characterized in that, The corner with the first transition fillet also has a second transition fillet corresponding to the second groove. The radius of the second transition fillet is R2, 2*R2 / (L3+L4)≥0.85, where L3 is the width of the first side corresponding to one of the first transition fillets adjacent to the second transition fillet in the direction perpendicular to the first direction, and L4 is the width of the second side corresponding to the other first transition fillet adjacent to the second transition fillet in the direction perpendicular to the second direction.

8. The valve core according to any one of claims 1-7, characterized in that, One of the first side faces and two of the second side faces intersect to form a first corner, and two of the first side faces and two of the second side faces intersect to form a second corner, wherein the radius of the first transition fillet at the first corner is smaller than the radius of the first transition fillet at the second corner.

9. The valve core according to any one of claims 1-7, characterized in that, The sealing mating surface includes a plurality of first mating surfaces extending along the first direction and a plurality of second mating surfaces extending along the second direction. The first mating surfaces include a plurality of first side surfaces arranged sequentially along the first direction, and the second mating surfaces include a plurality of second side surfaces arranged sequentially along the second direction.

10. A multi-way valve, characterized in that, The device includes a housing and a valve core according to any one of claims 1-9, 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.

11. The multi-way valve according to claim 10, characterized in that, The flow passage has at least three holes, and the switching channel is configured to allow different flow passages to switch and connect.

12. The multi-way valve according to claim 10, characterized in that, It also includes a sealing element 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 valve core.

13. 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 10-12, 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.

14. A vehicle, characterized in that, Including the thermal management system according to claim 13.

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