Multi-way valve components, multi-way valve assemblies and thermal management systems

Abstract

A multi-way valve component, a multi-way valve assembly and a thermal management system, the multi-way valve component comprising a housing component (200) and a valve body (100), the housing component (200) having an inner cavity, a bottom surface (211) in the inner cavity, and a plurality of ports provided on the bottom surface (211); the valve body (100) being rotatably arranged in the inner cavity, the valve body (100) being provided with at least two mutually unconnected flow channels (101-105), each flow channel (101-105) being connected to the other flow channel. 5) are all planar flow channels with their trajectories located on the end face of the valve body (100), and each flow channel (101-105) is used to connect at least two ports; wherein, the end face of each flow channel (101-105) provided on the valve body (100) is always in close contact with the bottom face (211), and the valve body (100) has at least two rotation gears relative to the housing (200) assembly. When the valve body (100) is rotated to switch the rotation gear, the ports connected to each flow channel are switched. The flow channels of this multi-channel valve assembly are planar flow channels provided on the end face of the valve body, and the ports are also provided on the corresponding end face of the housing. The processing of the flow channels is simpler, the processing cost is lower, and the space occupied is smaller.

Description

Technical Field

[0001] The present invention relates to the field of automobile thermal management, and in particular to a multi-way valve component, a multi-way valve assembly and a thermal management system. Background Art

[0002] Thermal management is the use of heating or cooling methods to regulate and control the temperature of the managed object. Using fluid media to thermally manage automobiles is a relatively common thermal management method. That is, the fluid medium is heated / cooled by heating / cooling components, and then heat is exchanged between the fluid medium and the managed object. At present, in most thermal management systems, each managed object is equipped with a three-way valve, a four-way valve, or other valve connected to the corresponding cooling / heating components. By switching these valves to switch the various circuits, thermal management is achieved. However, this thermal management system has multiple valves and multiple driving elements for driving these valves, which not only takes up a lot of space and is difficult to arrange, but also has high costs.

[0003] There is a multi-way valve, which has a shell and a rotatable valve core arranged in the shell. The outer wall of the shell is provided with multiple ports. The valve core adopts a cylindrical structure. There are multiple flow channels in the valve core, and the inlet and outlet of each flow channel are both on the outer wall of the valve core. By rotating the valve core, the inlet and outlet of each flow channel are connected to different ports, and the switching of each circuit can also be realized. Although this multi-way valve has a high degree of integration, it still occupies a large space when in use. Summary of the Invention

[0004] In view of the above shortcomings of the prior art, an object of the present invention is to provide a multi-way valve component, a multi-way valve assembly and a thermal management system to improve the problem that the existing multi-way valve occupies a large space.

[0005] To achieve the above-mentioned object and other related objects, the present invention provides the following technical solutions:

[0006] A multi-way valve assembly comprises a shell assembly and a valve body, the shell assembly having an inner cavity, a bottom surface being provided in the inner cavity, and a plurality of ports being provided on the bottom surface; the valve body is rotatably arranged in the inner cavity, and at least two mutually unconnected flow channels are provided on the valve body, and each of the flow channels is a planar flow channel whose trajectory is on the end surface of the valve body, and each of the flow channels is used to connect at least two ports; wherein the end surface of each flow channel provided on the valve body is always tightly attached to the bottom surface, and the valve body has at least two rotation gears relative to the shell assembly, and when the valve body is rotated to switch the rotation gear, the ports connected to each of the flow channels are switched.

[0007] In some embodiments, each of the flow channels has at least two access points for connecting with the ports, and each access point has an equal turning radius as at least one of the ports.

[0008] In some embodiments, the ports are divided into at least two port groups according to the grouping by gyration radius, and the ports in a single port group have the same gyration radius.

[0009] In some embodiments, the end surface of the valve body is divided into a central enclosed area and at least one annular enclosed area, the central enclosed area and each of the annular enclosed areas are arranged in sequence from the inside to the outside, the central enclosed area has a virtual outer contour, and each of the annular enclosed areas has a virtual inner contour and a virtual outer contour.

[0010] At least two groups of flow channel assemblies are provided on the end surface of the valve body, and one group of the flow channel assemblies is located in one of the closed areas, each group of the flow channel assemblies corresponds to one group of the port assemblies, each group of the flow channel assemblies includes at least two flow channels, and in the corresponding flow channel assemblies and port groups, the gyration radius of each port is equal to the gyration radius of each access point.

[0011] In some embodiments, the flow channel assembly within the central enclosed area includes a first flow channel, a second flow channel, and a third flow channel, the first flow channel having a first access point and a second access point; the second flow channel having a third access point and a fourth access point; and the third flow channel having a fifth access point and a sixth access point; wherein the second flow channel is separated between the first flow channel and the third flow channel, so that the first access point, the third access point, the fifth access point, the sixth access point, the fourth access point, and the second access point are uniformly distributed in sequence along the circumferential direction, and among each group of the port groups, the port group with the smallest rotation radius has four ports uniformly distributed along the circumferential direction.

[0012] In some embodiments, at least one of the flow channel components arranged in the annular closed area is an outer flow channel component, and the outer flow channel component includes a fourth flow channel and a fifth flow channel. The fourth flow channel and the fifth flow channel are equal curvature arc flow channels with equal turning radius at each location, and the port group corresponding to the outer flow channel component also has four ports evenly distributed along the axial direction.

[0013] In some embodiments, a cross-region flow channel is provided on the end surface of the valve body, and the cross-region flow channel has at least two access points with unequal gyration radii.

[0014] In some embodiments, an elastic pressing member is provided in the housing assembly, and the elastic pressing member is used to press the valve body in the inner cavity so that the end surface of the valve body where the flow channel is provided is pressed against the end surface.

[0015] Correspondingly, the present invention further provides a multi-way valve assembly, comprising a driving member and any one of the multi-way valve components described above, wherein the driving member is used to drive the valve body to rotate in the inner cavity of the housing assembly.

[0016] Correspondingly, the present invention also provides a thermal management system for managing the temperature of each object, which includes at least one heating element, at least one cooling element, and also includes any of the multi-way valve assemblies described above, each of the heating element, cooling element and each of the objects is connected to the corresponding port.

[0017] In summary, in the present invention, the flow channel is a planar flow channel arranged on the end face of the valve body, and the port is also arranged on the corresponding end face of the shell. The processing of the flow channel is simpler, the processing cost is lower, and the space occupied is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the three-dimensional structure of a multi-way valve assembly in one embodiment of the present invention;

[0020] Figure 2 for Figure 1 An exploded view of a multi-way valve assembly in one embodiment;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure of the middle valve body;

[0022] Figure 4 for Figure 2 Schematic diagram of the structure of the middle shell;

[0023] Figure 5 for Figure 2 Schematic diagram of the relationship between the positions of the flow channels and ports in the corresponding multi-channel valve assembly;

[0024] Figure 6 for Figure 5 Schematic diagram of the positional relationship between the various flow channels and ports after switching to another gear;

[0025] Figure 7 for Figure 5 A schematic diagram of the positional relationship between the various flow channels and ports after switching to another gear;

[0026] Figure 8 for Figure 5 Schematic diagram of the positional relationship between the various flow channels and ports after switching to the next gear;

[0027] Figure 9A schematic diagram of the state position relationship between each flow channel and port in another embodiment of the multi-way valve assembly;

[0028] Figure 10 for Figure 9 Schematic diagram of the positional relationship between the various flow channels and ports after switching to another gear;

[0029] Figure 11 for Figure 9 A schematic diagram of the positional relationship between the various flow channels and ports after switching to another gear;

[0030] Figure 12 A schematic diagram of a positional relationship between each flow channel and a port in yet another embodiment of the multi-channel valve assembly;

[0031] Figure 13 for Figure 12 Schematic diagram of the positional relationship between the various flow channels and ports after switching to another gear;

[0032] Figure 14 for Figure 13 A schematic diagram of the positional relationship between the various flow channels and ports after switching to another gear;

[0033] Figure 15 for Figure 14 Schematic diagram of the positional relationship between the various flow channels and ports after switching to another gear;

[0034] Figure 16 A schematic diagram of a positional relationship between each flow channel and a port in another embodiment of the multi-channel valve group;

[0035] Figure 17 This is a schematic diagram of a state position relationship between each flow channel and port in yet another embodiment of the multi-channel valve group;

[0036] Figure 18 The figure is a schematic diagram of the state position relationship between each flow channel and port in yet another embodiment of the multi-channel valve group.

[0037] Component number description

[0038] 100, valve body; 110, first end surface; 101, first flow channel; 102, second flow channel; 103, third flow channel; 104, fourth flow channel; 105, fifth flow channel;

[0039] 200, housing assembly; 210, housing; 220, end cover; 211, bottom surface;

[0040] 1. First port; 2. Second port; 3. Third port; 4. Fourth port; 5. Fifth port; 6. Sixth port; 7. Seventh port; 8. Eighth port.

[0041] 300. Elastic pressing member; 400. Driving member. DETAILED DESCRIPTION

[0042] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following examples and the features in the examples can be combined with each other unless they conflict. It should also be understood that the terms used in the examples of the present invention are for the purpose of describing specific embodiments, not for the purpose of limiting the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0043] See also Figures 1 to 17 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0044] When numerical ranges are given in the examples, it should be understood that unless otherwise specified herein, both endpoints of each numerical range and any value between the two endpoints may be used. Unless otherwise defined, all technical and scientific terms used herein are consistent with the prior art as understood by those skilled in the art and the description of the present invention. Any prior art methods, devices, and materials similar or equivalent to those described in the examples of the present invention may also be used to implement the present invention.

[0045] The multi-way valves of the following embodiments may be applied to thermal management systems of vehicles, and in particular to thermal management systems of electric vehicles.

[0046] Please refer to Figures 1 to 17The multi-way valve assembly provided by the present invention includes a housing assembly 200 having an inner cavity and a valve body 100 rotatably disposed within the inner cavity. The inner cavity is provided with a bottom surface 211, on which a plurality of ports are disposed. The valve body 100 is provided with at least two mutually unconnected flow channels (see reference numerals 101 to 105). Each flow channel is a planar flow channel whose trajectory is located on the end surface of the valve body 100, and each flow channel is used to connect at least two ports. Herein and in the following embodiments, the end surface where each flow channel is provided is defined as a first end surface 110. The first end surface 110 is always in close contact with the bottom surface 211. The valve body 100 has at least two rotational gears relative to the housing assembly 200. When the valve body 100 is rotated to switch the rotational gear, the port connected to each flow channel is switched. The port here is used to connect a pipeline outside the housing 210 to the corresponding flow channel.

[0047] In order to facilitate understanding of the process of rotating the valve body 100 to switch the rotation gear, refer to Figures 5 to 8 Corresponding multi-way valve assembly, Figures 9 to 11 Multi-way valve assembly, Figures 12 to 15 Multi-way valve assembly, Figure 16 and Figure 17 In each of the drawings, the cross-sectional shape of the port is circular, and the number of each port corresponds to the corresponding numerical serial number, such as 1, 2, 3...8. In actual implementation, there is no limit to the cross-sectional shape of the port, as long as it can allow the fluid medium to pass through. The number of ports is not limited to 8, but is set according to demand; in each of the drawings, the number of each flow channel corresponds to the corresponding number, such as 101, 102, 103, 104, 105. During the thermal management process, the valve body 100 can be manually or automatically rotated at a specific angle to switch the rotation gear, so that the ports connected to each flow channel are switched. For example, Figures 1 to 15 In the drawings, the switching rotation angle is a multiple of 60 degrees. In actual implementation, the switching angle is determined according to the arrangement of the ports and the flow channels, and is not limited to a multiple of 60 degrees.

[0048] In the multi-channel valve assembly of the present invention, the flow channel is a planar flow channel arranged on the end face of the valve body, which makes the processing of the flow channel simpler and the processing cost lower; and the port is also arranged on the corresponding end face of the shell. Compared with the method of arranging the port on the side wall of the shell assembly, not only can the space occupied by the entire multi-channel valve be smaller, but also after the port is connected to the pipe joints of each pipeline in the thermal management system, the space occupied by the entire connection structure can be further reduced.

[0049] Figure 16 In the flow channel, each flow channel adopts a straight line flow channel or a broken line flow channel. Figures 9 to 11 In the process, each flow channel adopts a circular arc flow channel with constant curvature. In the actual implementation process, see Figures 5 to 17The types of flow channels may include one or at least two of a straight line flow channel, a broken line flow channel, a constant curvature arc flow channel, a variable curvature arc flow channel, a straight line arc combination flow channel, and a broken line arc combination flow channel.

[0050] In some embodiments, see Figures 5 to 17 Each flow channel has at least two access points for connecting to ports, and each access point has the same turning radius as at least one port. For example, Figures 5 to 8 The flow channel 101 in the embodiment has three access points, which are Figure 3 Access points A, B, and C are marked in the figure.

[0051] In some embodiments, the ports are grouped into at least two port groups according to the gyration radius, and the ports in a single port group have the same gyration radius, for example, Figures 5 to 17 In each case, two groups of port groups are set, namely the first port group and the second port group. The first port group corresponds to the first port 1, the second port 2, the third port 3 and the fourth port 4, and the second port group corresponds to the fifth port 5, the sixth port 6 and the seventh port 7. Of course, in the actual implementation process, only one group of port groups can be set, but setting two or more groups of port groups is conducive to forming more gears. In the group of port groups here, a single port group can be set with only one port, or it can include two or more ports. For example, Figure 18 In the embodiment, three port groups are set. The first port group contains only the first port 1, the second port group contains the second port 2, the third port 3, and the fourth port 4, and the third port group contains the fifth port 5, the sixth port 6, the seventh port 7, and the eighth port 8.

[0052] For ease of understanding, in the following embodiments, see Figure 5 、 Figure 9 、 Figure 16 The first end surface 110 is divided into a central enclosed area m and at least one annular enclosed area n. The central enclosed area m and each annular enclosed area are arranged sequentially from the inside to the outside. The central enclosed area has a virtual outer contour (see the dotted outline in the accompanying drawings for details), and each annular enclosed area has a virtual inner contour and a virtual outer contour (not shown). The virtual outer contour and virtual inner contour are not actual contours, but are only used to facilitate understanding of the distribution of the various flow channel components. In addition, the annular enclosed area here does not refer to an area surrounded by two circles. The specific contours of the virtual outer contour and virtual inner contour are not limited, as long as the virtual outer contour of a single annular enclosed area is outside the virtual inner contour.

[0053] In some embodiments, at least two groups of flow channel assemblies are provided on the first end surface, and one group of flow channel assemblies is located in one of the closed areas, each group of flow channel assemblies corresponds to one group of the port assemblies, each group of flow channel assemblies includes at least two flow channels, and in the corresponding flow channel assemblies and port groups, the gyration radius of each port is equal to the gyration radius of each access point.

[0054] Specifically, for example, Figures 5 to 8 In the figure, a first flow channel assembly (including flow channels 101, 102, 103) and a second flow channel assembly (104, 105) are provided on the first end face 110. The flow channels of the first flow channel assembly are located in a central closed area m, and the flow channel assemblies of the second flow channel assembly are located in an annular closed area n. The gyration radius of each access point of the first flow channel assembly is equal, and the gyration radius of each access point of the second flow channel assembly is equal. The ports in the port group corresponding to the first flow channel assembly are numbered 1, 2, 3, 4, and the ports in the port group corresponding to the second flow channel assembly are numbered 5, 6, 7, 8.

[0055] Of course, in actual implementation, see Figure 12 、 Figure 17 The first end surface 110 may also be provided with a cross-region flow channel, and the cross-region flow channel has at least two access points with unequal radii of gyration. In other words, the setting areas of the flow channels of the first end surface 110 are not grouped according to the above-mentioned central closed area and annular area. The access points of the cross-region flow channel are distributed in at least two closed areas. For example, Figure 12 In the flow channel 101, there are three access points, two of which are located in the central closed area labeled m, and one access point is located in the annular closed area labeled n. Figure 17 In the example, the flow channel 101 also has three access points, one of which is located in the annular closed area labeled m, and two of which are located in the annular closed area labeled n.

[0056] In some embodiments, in conjunction with Figure 3 、 Figures 5 to 8 The flow channel assembly within the central closed area m includes a first flow channel 101, a second flow channel 102, and a third flow channel 103. The first flow channel 101 has a first access point A, a second access point B, and a third access point C. The second flow channel 102 has a fourth access point D and a fifth access point E. The third flow channel 103 has a sixth access point F, a seventh access point G, and an eighth access point H. The second flow channel 102 is separated between the first flow channel 101 and the third flow channel 103. The first access point A, the second access point B, the third access point C, the fourth access point D, the sixth access point F, the seventh access point G, the eighth access point H, and the fifth access point E are uniformly distributed in sequence along the circumferential direction. Among the port groups, the port group with the smallest gyration radius has four ports uniformly distributed along the circumferential direction.

[0057] In some embodiments, the flow channel component provided in at least one annular closed area is an outer flow channel component, see 3, Figures 5 to 8 , a group of external flow channel components is set, which includes a fourth flow channel 104 and a fifth flow channel 105. The fourth flow channel 104 and the fifth flow channel 105 are equal curvature arc flow channels with equal turning radius at each location. If the turning radius corresponding to this group of flow channel components is R, the arc lengths of the fourth flow channel and the fifth flow channel are both greater than one-quarter of the circumference corresponding to the turning radius, and the port group corresponding to the external flow channel component also has four ports evenly distributed along the axial direction.

[0058] The multi-way valve assembly with this structure has four gears: Figure 5 In the state shown, the second port 2 is connected to the fourth port 4, the fifth port 5 is connected to the eighth port 8, and the sixth port 6 is connected to the seventh port 7; when in Figure 6 In the state shown, the first port 1 and the third port 3 are connected, the seventh port 7 and the eighth port 8 are connected, and the fifth port 5 and the sixth port 6 are connected; when in Figure 7 In the state shown, the first port 1 and the second port 2 are connected, the third port 3 and the fourth port 4 are connected, the fifth port 5 and the sixth port 6 are connected, and the seventh port 7 and the eighth port 8 are connected; when in Figure 8 In the state shown, the first port 1 is connected to the fourth port 4 , the second port 2 is connected to the third port 3 , the fifth port 5 is connected to the eighth port 8 , and the seventh port 7 is connected to the sixth port 6 .

[0059] In actual implementation, see Figures 9 to 11 , the flow channel assembly in the central closed area m can also be provided with only the first flow channel 101 and the third flow channel 103 instead of the second flow channel 102. In this case, there are three gears, and the connection state between the ports can be switched by switching the gears. However, the second flow channel 102 can form more gears without changing the volume. Of course, in the actual implementation process, if the Figures 12 to 15 This multi-channel valve assembly with cross-region flow channels can also achieve four gears, but because its flow channels span the region, the flow channel trajectory cannot all use simple equal curvature arcs and straight lines. To achieve its processing, although it is simpler than the processing method of the flow channels in the existing multi-channel valve, the equipment used is relatively Figures 5 to 8 The equipment required for the runner processing shown is more demanding.

[0060] In addition, in the actual implementation process, the second flow channel 102 is preferably a straight flow channel, the first flow channel 101 and the third flow channel 103 are symmetrically arranged on both sides of the second flow channel 102, and the fourth flow channel 104 and the fifth flow channel 105 correspond to the axial center of the valve body, which is beneficial to the static balance and dynamic balance of the valve body, and is also beneficial to avoid leakage of the flow channel due to the displacement of the valve body.

[0061] In some embodiments, an elastic pressing member 300 is provided in the shell assembly 200. The elastic pressing member 300 is used to press the valve body 100 in the inner cavity so that the first end face 110 is pressed against the bottom surface 211. The provision of the elastic pressing member 300 is beneficial to preventing the flow channel from detaching from the bottom surface 211 during the switching process and causing leakage, thereby improving the reliability of the multi-channel valve assembly during operation.

[0062] Specifically, in some embodiments, the elastic pressing member 300 adopts a disc-shaped structure, which is conducive to uniformly pressing the valve body 100 and reducing the possibility of leakage of the medium in the flow channel.

[0063] In some embodiments, the shell assembly 200 includes a shell 210 having an opening and a detachable end cover 220 installed at the opening. The opening is used for the valve body 100 to be installed into the inner cavity along the axial direction. When the valve body 100 is installed, the valve body 100 is installed toward the bottom surface 211 of the shell 210, and then the elastic pressing member 300 is installed, and finally the end cover 220 is installed.

[0064] Accordingly, the present invention further provides a multi-way valve assembly, comprising a motor and any of the multi-way valve components described above, wherein the driving member 400 is used to drive the valve body 100 to rotate in the inner cavity of the housing assembly 200. The driving member 400 may be a motor.

[0065] In some embodiments, referring to the figure, the driving member 400 is arranged on the side of the valve body 100 facing away from the first end face 110, so that the driving member 400 is at one end of the valve body 100, and the ports and the pipe joints connected to the ports in the use state are at the other end of the valve body 100. There is sufficient installation space for the driving member 400 and the pipe joints, and the outer diameter of the entire multi-way valve assembly can be controlled within a relatively small size range.

[0066] In order to enable the driving member 400 to drive the valve body 100 to rotate, a torque transmission structure is provided between the driving member 400 and the valve body 100. For example, in the figure, a boss is provided on the valve body 100, and the boss passes through the elastic pressing member 300 and the end cover 220 in sequence. A mounting hole for the output shaft of the power supply motor is provided on the boss. The output shaft has a square shaft section, and the square shaft section is inserted into the mounting hole to realize button transmission. In actual implementation, this button transmission structure occupies a small space. In actual implementation, if the size of the output shaft and the mounting hole is large, torque transmission can be achieved by key connection.

[0067] Correspondingly, the present invention also provides a thermal management system for managing the temperature of each object, which includes at least one heating element and at least one cooling element. The thermal management system also includes any of the above-mentioned multi-way valve assemblies, and each heating element, cooling element and each object is connected to a corresponding port, so that when the multi-way valve assembly is switched, each object (managed object) is switched to be connected to the corresponding heating element or cooling element, or is switched to a state of being disconnected from all heating elements and cooling elements.

[0068] In summary, in the present invention, the flow channel is simpler to process, the processing cost is lower, and the entire multi-way valve occupies less space. Therefore, the present invention effectively overcomes some practical problems in the prior art and has high utilization value and practical significance.

[0069] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A multi-way valve assembly, characterized in that: Applied to a thermal management system, the multi-channel valve assembly includes: A housing assembly having an inner cavity, the inner cavity being provided with a bottom surface, and the bottom surface being provided with a plurality of ports; a valve body rotatably disposed in the inner cavity, the valve body being provided with at least two mutually disconnected flow channels, each of the flow channels being a planar flow channel having a trajectory on an end surface of the valve body, and each of the flow channels being used to connect at least two ports; The end surfaces of the valve body provided with the flow channels are always in close contact with the bottom surface, and the valve body has at least two rotation gears relative to the housing assembly. When the valve body is rotated to switch the rotation gears, the ports connected to the flow channels are switched. Each flow channel is one or at least two of a straight line flow channel, a broken line flow channel, a constant curvature arc flow channel, a variable curvature arc flow channel, a straight line arc combination flow channel, and a broken line arc combination flow channel.

2. The multi-way valve assembly according to claim 1, characterized in that: Each of the flow channels has at least two access points for connecting with the ports, and each access point has an equal turning radius as at least one of the ports.

3. The multi-way valve assembly according to claim 2, characterized in that: The ports are grouped according to the turning radius, and each port is divided into at least two port groups. The ports in a single port group have the same turning radius.

4. The multi-way valve assembly according to claim 3, characterized in that: The end surface of the valve body is divided into a central closed area and at least one annular closed area, the central closed area and each of the annular closed areas are arranged in sequence from the inside to the outside, the central closed area has a virtual outer contour, and each of the annular closed areas has a virtual inner contour and a virtual outer contour. At least two groups of flow channel assemblies are provided on the end surface of the valve body, and one group of the flow channel assemblies is located in one of the closed areas, each group of the flow channel assemblies corresponds to one group of the port assemblies, each group of the flow channel assemblies includes at least two flow channels, and in the corresponding flow channel assemblies and port groups, the gyration radius of each port is equal to the gyration radius of each access point.

5. The multi-way valve assembly according to claim 4, characterized in that: The flow channel assembly within the central enclosed area includes: a first flow channel, the first flow channel having a first access point, a second access point, and a third access point; a second flow channel having a fourth access point and a fifth access point; a third flow channel, the third flow channel having a sixth access point, a seventh access point, and an eighth access point; The second flow channel is separated between the first flow channel and the third flow channel, so that the first access point, the second access point, the third access point, the fourth access point, the sixth access point, the seventh access point, the eighth access point and the fifth access point are uniformly distributed in sequence along the circumferential direction, and among each group of the port groups, the port group with the smallest turning radius has four ports uniformly distributed along the circumferential direction.

6. The multi-way valve assembly according to claim 5, characterized in that: At least one of the flow channel components arranged in the annular closed area is an outer flow channel component, and the outer flow channel component includes a fourth flow channel and a fifth flow channel. The fourth flow channel and the fifth flow channel are equal-curvature circular arc flow channels with equal turning radius at each location, and the port group corresponding to the outer flow channel component also has four ports evenly distributed along the axial direction.

7. The multi-way valve assembly according to claim 3, characterized in that: A cross-region flow channel is provided on the end surface of the valve body, and the cross-region flow channel has at least two access points with unequal gyration radii.

8. The multi-way valve assembly according to any one of claims 1 to 7, characterized in that: An elastic pressing member is provided in the housing assembly, and the elastic pressing member is used to press the valve body into the inner cavity so that the end surface of the valve body where the flow channel is provided is pressed against the end surface.

9. A multi-way valve assembly, characterized in that: It comprises a driving member and the multi-way valve assembly according to any one of claims 1 to 8, wherein the driving member is used to drive the valve body to rotate in the inner cavity of the shell assembly.

10. A thermal management system for managing the temperature of an object, comprising at least one heating element and at least one cooling element, characterized in that: It also includes the multi-way valve assembly according to any one of claims 1 to 8, wherein each of the heating element, the cooling element and the object is connected to a corresponding port.

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