Control valve and thermal management system

Abstract

The application relates to a control valve and a thermal management system, the valve body is provided with 4n communication positions of communication valve cavities along a preset circumferential direction, the corresponding central angles of each communication position are equal to 90 DEG / n, a part of two adjacent communication positions are connected in communication along the preset circumferential direction to form double-communication connection positions, and the other part of the communication positions are not connected in communication along the preset circumferential direction to form single-communication connection positions which are distributed in pairs. A valve core is rotatably arranged in the valve cavity, the valve core is provided with n penetrating flow channels which penetrate the valve core, each penetrating flow channel has two interval arranged flow channel openings on the side surface of the valve core, each flow channel opening can correspond to one communication position, 2n flow channel openings are distributed on the circumferential side of the valve core along the preset circumferential direction, adjacent flow channel openings are equidistantly distributed along the preset circumferential direction, and the corresponding central angles of each flow channel opening are equal to 90 DEG / n. The control valve and the thermal management system provided by the application solve the problem of a large amount of redundant design of an integrated control valve.

Description

Technical Field

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

[0002] In the thermal management system of new energy vehicles, multiple coolant circulation loops are typically designed. Furthermore, to meet requirements such as cost savings, lightweight design, and efficient use of space, a simple and practical control valve is usually needed to switch between various operating conditions within the thermal management system. Common control valves include combinations of multiple three-way valves and multiple four-way valves.

[0003] However, the combination of multiple three-way valves and multiple four-way valves significantly increases the size of the thermal management system. Furthermore, this configuration makes the control valve operation more complex, hindering the simplification of the thermal management system's structure. To reduce the size and manufacturing cost of the control valves, existing technologies integrate multiple multi-way valves into a single integrated control valve structure. However, in existing integrated control valves, during the switching of connection modes, some of the valve core's connecting grooves and some of the valve body's connecting holes remain inactive in most modes. In other words, existing integrated control valves have a large amount of redundant design, which represents a waste of structure and space for the thermal management system. Summary of the Invention

[0004] Therefore, it is necessary to provide a control valve and thermal management system to solve the problem of excessive redundancy in existing integrated control valves.

[0005] The control valve provided in this application includes a valve body and a single valve core. The valve body has a valve cavity, and the direction around the central axis of the valve cavity is defined as a preset circumferential direction. The valve body has 4n connecting positions connecting the valve cavity along the preset circumferential direction, where n is a positive integer, and the central angle corresponding to each connecting position is equal to 90° / n. A portion of the two adjacent connecting positions are connected along the preset circumferential direction to form a double-pass connection position, and another portion of the connecting positions are not connected along the preset circumferential direction to form a single-pass connection position. Furthermore, the single-pass connection positions are distributed in pairs adjacent to each other, and two adjacent single-pass connection positions are defined as a group of variable-pass positions. The double-pass connection positions and the variable-pass position groups are distributed along the preset circumferential direction on the periphery of the valve core. The valve core is rotatably disposed in the valve cavity. The valve core has n through-flow channels that pass through itself. Each through-flow channel has two spaced-apart flow ports on the side of the valve core. Each flow port can connect to a corresponding connection position. The 2n flow ports are distributed around the valve core along a preset circumferential direction. Adjacent flow ports are equidistantly distributed along the preset circumferential direction, and the central angle corresponding to each flow port is equal to 90° / n.

[0006] In one embodiment, the central angle t corresponding to the portion between the two openings of each through-flow channel satisfies 2*90° / n≤t≤(2n-1)*90° / n.

[0007] In one embodiment, the central angle t corresponding to the portion between the two openings of each through-flow channel is 270° / n.

[0008] In one embodiment, n = 2r, where r is a positive integer, and the valve core is divided into r layers along its own axis, each layer having two through channels.

[0009] In one embodiment, the through-flow channels of each layer are rotationally symmetrical about the central axis of the valve cavity.

[0010] In one embodiment, n equals 4, the number of double-pass connections is 7, and the number of variable-pass groups is 1.

[0011] In one embodiment, the valve core includes a layer plate and an interlayer partition plate. Multiple layers plate are spaced apart along the central axis of the valve cavity, and multiple interlayer partition plates are disposed between adjacent layers plate and surround the adjacent layers plate to form multiple through flow channels.

[0012] In one embodiment, the control valve further includes a driver and a connecting shaft, one end of which is connected to the valve core and the other end to the driver. The driver can drive the connecting shaft to rotate the valve core relative to the valve body around its own axis.

[0013] In one embodiment, the valve core is provided with a first anti-rotation protrusion at one end near the actuator, and the actuator is provided with a second anti-rotation protrusion corresponding to the first anti-rotation protrusion. When the valve core rotates relative to the valve body around its own axis by a preset angle, the first anti-rotation protrusion and the second anti-rotation protrusion can cooperate with each other to stop the valve core from continuing to rotate.

[0014] This application also provides a thermal management system, which includes the control valve of any of the above embodiments.

[0015] Compared with the prior art, the control valve and thermal management system provided in this application have a central angle of 90° / n for each flow channel opening, and the number of flow channels opening is 2n. Therefore, the sum of the central angles corresponding to all flow channels opening is (90° / n)*2n = 180°. Since adjacent flow channels openings are equidistantly distributed along a preset circumferential direction, the central angle between adjacent flow channels openings is 180° / (2n) = 90° / n. Considering that each flow channel opening can connect to one connecting position, it can be seen that 2n flow channels opening can connect to 2n connecting positions set at intervals. Furthermore, the remaining 2n connecting positions are not connected to the flow channels opening.

[0016] Furthermore, since the connecting positions include double-pass connecting positions and variable-pass connecting position groups containing two single-pass connecting positions, and the central angle corresponding to the double-pass connecting position is 2*90° / n=180° / n, the central angle corresponding to the double-pass connecting position is equal to the sum of the central angle corresponding to one flow channel opening and the central angle corresponding to the part between adjacent flow channel openings. Thus, when the valve core rotates relative to the valve body by an angle of m*90° / n (m is a positive integer less than n), it can be ensured that each double-pass connecting position can connect to one flow channel opening. That is, each double-pass connecting position can connect to other connecting positions (including double-pass connecting positions and single-pass connecting positions) through a through flow channel.

[0017] Similarly, since two adjacent single-pass connection positions form a variable-pass group, the central angle corresponding to the variable-pass group is equal to the sum of the central angle corresponding to one flow channel opening and the central angle corresponding to the portion between adjacent flow channel openings. Thus, when the valve core rotates relative to the valve body by an angle of m*90° / n (where m is a positive integer less than n), it can be ensured that one single-pass connection position and the flow channel opening in the variable-pass group remain connected, while the other single-pass connection position and the flow channel opening in the variable-pass group are in a closed state. Furthermore, the number of variable-pass groups can be increased or decreased according to actual needs, thereby controlling the number of single-pass connection positions in a closed state each time.

[0018] In summary, with this configuration, all through-flow channels on the valve cores are in working condition under any connection mode. For the valve body's connection positions, except for the necessary single-way connection positions that need to remain closed in certain operating modes, all other single-way connection positions and all double-way connection positions are in working condition. That is, the control valve provided in this application significantly reduces the number of redundant designs, optimizes the control valve's structure, and reduces its size. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of a control valve according to an embodiment of this application;

[0021] Figure 2 A side view of a control valve according to an embodiment provided in this application;

[0022] Figure 3 for Figure 2 The sectional view at point AA is shown.

[0023] Figure 4 for Figure 2 The sectional view at point BB is shown.

[0024] Figure 5 A partial structural schematic diagram of a control valve according to an embodiment of this application;

[0025] Figure 6 A schematic diagram of the assembly structure of the valve core and connecting shaft according to an embodiment provided in this application;

[0026] Figure 7 A schematic diagram of the structure of a driver according to an embodiment of this application.

[0027] Reference numerals: 100, valve body; 110, valve cavity; 120, connecting position; 131, first double-pass position; 132, second double-pass position; 133, third double-pass position; 134, fourth double-pass position; 135, fifth double-pass position; 136, sixth double-pass position; 137, seventh double-pass position; 141, first single-pass position; 142, second single-pass position; 150, variable pass group; 200, valve core; 210, through flow channel; 211, first flow channel; 212, second flow channel; 213, third flow channel; 214, fourth flow channel; 220, flow channel opening; 230, shelf plate; 240, interlayer partition plate; 250, first anti-rotation protrusion; 300, actuator; 310, second anti-rotation protrusion; 400, connecting shaft. Detailed Implementation

[0028] In the description of this application, 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", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly 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," "on top of," and "over" 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.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] In the thermal management system of new energy vehicles, multiple coolant circulation loops are typically designed. Furthermore, to meet requirements such as cost savings, lightweight design, and efficient use of space, a simple and practical control valve is usually needed to switch between various operating conditions within the thermal management system. Common control valves include combinations of multiple three-way valves and multiple four-way valves.

[0035] However, the combination of multiple three-way valves and multiple four-way valves significantly increases the size of the thermal management system. Furthermore, this configuration makes the operation of the control valves more complex, hindering the simplification of the thermal management system's structure. To reduce the size and simplify the structure of the control valves, existing technologies integrate multiple multi-way valves into a single integrated control valve structure. However, in existing integrated control valves, during the switching of connection modes, some of the valve core's connecting grooves and some of the valve body's connecting holes remain inactive in most modes. In other words, existing integrated control valves have a large amount of redundant design, which represents a waste of structure and space for the thermal management system.

[0036] Please see Figures 1-7 To address the problem of excessive redundancy in existing integrated control valves, this application provides a control valve and thermal management system. The control valve includes a valve body 100 and a single valve core 200. The valve body 100 has a valve cavity 110, and the direction around the central axis of the valve cavity 110 is defined as a preset circumferential direction. The valve body 100 has 4n connecting positions 120 (including virtual connecting holes and solid hole walls) along the preset circumferential direction, where n is a positive integer. The central angle corresponding to each connecting position 120 is equal to 90° / n. Some adjacent connecting positions 120 are connected along the preset circumferential direction to form a double-pass connection position, and the remaining connecting positions 120 are not connected along the preset circumferential direction to form a single-pass connection position. Furthermore, the single-pass connection positions are distributed adjacent to each other, and two adjacent single-pass connection positions are defined as a group of variable-pass position groups 150. The double-pass connection positions and the variable-pass position groups 150 are distributed along the preset circumferential direction on the periphery of the valve core 200. The valve core 200 is rotatably disposed within the valve cavity 110. The valve core 200 has n through-flow channels 210 that penetrate itself. Each through-flow channel 210 has two spaced-apart flow ports 220 on the side of the valve core 200. Each flow port 220 can be connected to a corresponding connection position 120. The 2n flow ports 220 are distributed along a preset circumferential direction on the periphery of the valve core 200. Adjacent flow ports 220 are equidistantly distributed along the preset circumferential direction, and the central angle corresponding to each flow port 220 (including the virtual connection port and the solid sidewall) is equal to 90° / n.

[0037] It should be noted that the central angle of each connected position 120 is calculated as 360° / (4n) = 90° / n.

[0038] Since the central angle corresponding to each flow channel 220 is equal to 90° / n, and the number of flow channels 220 is 2n, the sum of the central angles corresponding to all flow channels 220 is (90° / n)*2n = 180°. Furthermore, because adjacent flow channels 220 are equidistantly distributed along a predetermined circumferential direction, the central angle corresponding to the portion between adjacent flow channels 220 is 180° / (2n) = 90° / n. Considering that each flow channel 220 can connect to a corresponding connection point 120, it can be seen that 2n flow channels 220 can connect to 2n connection points 120 spaced apart. In this case, the remaining 2n connection points 120 are not connected to the flow channels 220.

[0039] Since the connecting position 120 includes a double-pass connecting position and a variable-pass position group 150 containing two single-pass connecting positions, and the central angle corresponding to the double-pass connecting position is 2*90° / n=180° / n, the central angle corresponding to the double-pass connecting position is equal to the sum of the central angle corresponding to a flow channel 220 and the central angle corresponding to the part between adjacent flow channel 220. Thus, when the valve core 200 rotates relative to the valve body 100 by an angle of m*90° / n (m is a positive integer less than n), it can be ensured that each double-pass connecting position can connect to a flow channel 220. That is, each double-pass connecting position can connect to other connecting positions 120 (including double-pass connecting positions and single-pass connecting positions) through a through flow channel 210.

[0040] Similarly, since two adjacent single-pass connection positions form a variable-pass group 150, the central angle corresponding to the variable-pass group 150 is equal to the sum of the central angle corresponding to one flow channel 220 and the central angle corresponding to the portion between adjacent flow channel 220s. Thus, when the valve core 200 rotates relative to the valve body 100 by an angle of m*90° / n (where m is a positive integer less than n), it can be ensured that one single-pass connection position in the variable-pass group 150 remains connected to the flow channel 220, while the other single-pass connection position in the variable-pass group 150 and the flow channel 220 are in a closed state. Furthermore, the number of variable-pass groups 150 can be increased or decreased according to actual needs, thereby controlling the number of single-pass connection positions in a closed state each time.

[0041] In summary, with this configuration, in any connection mode, all through-flow channels 210 on the valve cores 200 are in the working state. For the connection positions 120 of the valve body 100, except for the necessary single-way connection positions that need to remain closed in certain operating modes, all other single-way connection positions and all double-way connection positions are in the working state. That is, the control valve provided in this application significantly reduces the number of redundant designs, optimizes the control valve structure, and reduces the size of the control valve.

[0042] Specifically, in one embodiment, such as Figure 3 and Figure 4As shown, n equals 4, the number of double-pass connection bits is 7, and the number of variable pass bit groups 150 is 1.

[0043] Thus, the number of through channels 210 is 4, the total number of channel openings 220 is 8, and the total number of connection positions 120 is 16, including 7 double-pass connection positions and 1 group of variable pass positions 150. Each time, one single-pass connection position remains closed, and the other single-pass connection position remains open.

[0044] However, this is not the only limitation. In other embodiments, n can also be other positive integers, and the number of variable bit groups 150 can also be a natural number greater than 1, which is not limited here.

[0045] Furthermore, in one embodiment, as Figure 3 and Figure 4 As shown, the central angle t corresponding to the portion between the two flow openings 220 of each through flow channel 210 satisfies 2*90° / n≤t≤(2n-1)*90° / n.

[0046] This configuration allows for a larger distance between the two flow openings 220 of each through flow channel 210, thereby enabling each through flow channel to connect two connected positions 120 that are far apart.

[0047] In this embodiment, as Figure 3 and Figure 4 As shown, the central angle t corresponding to the portion between the two flow openings 220 of each through flow channel 210 is 270° / n.

[0048] In one embodiment, such as Figure 3 , Figure 4 and Figure 6 As shown, n = 2r, where r is a positive integer, and the valve core 200 is divided into r layers along its own axis, with each layer having 2 through channels 210.

[0049] This design avoids the problem of too many through channels 210 on the same layer causing them to easily interfere with each other.

[0050] Furthermore, in one embodiment, the connecting position 120 extends through the r-layer valve core 200 along the axial direction of the valve core 200, and the flow passages 220 of different layers are not connected to the same connecting position 120.

[0051] In this way, cross-contamination of liquids at the flow channels 220 of different layers can be avoided.

[0052] Furthermore, in one embodiment, as Figure 3 and Figure 4 As shown, the through-flow channel 210 of each layer is rotationally symmetrical about the central axis of the valve chamber 110.

[0053] This reduces the machining difficulty of the mold used to process the valve core 200.

[0054] Furthermore, in one embodiment, the two through channels 210 of each layer are arranged in a 180° rotational symmetry about the central axis of the valve chamber 110.

[0055] This allows each layer of the through-flow channel 210 to have a larger coverage area around the valve core 200.

[0056] However, this is not the only embodiment. In other embodiments, the two through channels 210 of each layer are arranged in rotational symmetry about the central axis of the valve chamber 110 at other angles, which will not be listed here.

[0057] In one embodiment, such as Figure 6 As shown, the valve core 200 includes a layer plate 230 and an interlayer partition plate 240. Multiple layers 230 are spaced apart along the central axis of the valve cavity 110, and multiple interlayer partition plates 240 are disposed between adjacent layers 230 and surround the adjacent layers 230 to form multiple through flow channels 210.

[0058] This reduces the manufacturing difficulty of the valve core 200. Furthermore, by forming a through flow channel through the layer plate 230 and the interlayer partition plate 240, the weight of the entire valve core 200 is reduced, the wall thickness of the valve core 200 is made consistent, and thus the dimensional stability of the valve core 200 is better.

[0059] In one embodiment, such as Figure 1 , Figure 2 and Figure 6 As shown, the control valve also includes a driver 300 and a connecting shaft 400. One end of the connecting shaft 400 is connected to the valve core 200, and the other end is connected to the driver 300. The driver 300 can drive the connecting shaft 400 to make the valve core 200 rotate relative to the valve body 100 around its own axis.

[0060] This improves the rotational accuracy of the relative rotation angle between the valve core 200 and the valve body 100.

[0061] Furthermore, in one embodiment, the connecting shaft 400 and the valve core 200 are integrally injection molded parts, and the connecting shaft 400 of the valve core 200 is inserted into the output end of the driver 300, thus ensuring the rotational accuracy of the valve core 200.

[0062] Furthermore, in one embodiment, as Figure 6 and Figure 7As shown, the valve core 200 is provided with a first anti-rotation protrusion 250 at one end near the driver 300, and the driver 300 is provided with a second anti-rotation protrusion 310 corresponding to the first anti-rotation protrusion 250. When the valve core 200 rotates relative to the valve body 100 around its own axis by a preset angle, the first anti-rotation protrusion 250 and the second anti-rotation protrusion 310 can cooperate with each other to stop the valve core 200 from continuing to rotate.

[0063] This prevents the valve core 200 from rotating excessively.

[0064] In the control valve provided in this application, the number of through flow channels 210 is 4, the total number of flow port 220 is 8, and the central angle t corresponding to the portion between the two flow ports 220 of each through flow channel 210 is 67.5°. The total number of connecting positions 120 is 16, including 7 double-pass connecting positions and 1 set of variable-pass position groups 150.

[0065] like Figure 3 and Figure 4 As shown, four through-flow channels 210 are defined as the first flow channel 211, the second flow channel 212, the third flow channel 213, and the fourth flow channel 214. Seven double-pass connection positions are defined as the first double-pass position 131, the second double-pass position 132, the third double-pass position 133, the fourth double-pass position 134, the fifth double-pass position 135, the sixth double-pass position 136, and the seventh double-pass position 137. Two single-pass connection positions are defined as the first single-pass position 141 and the second single-pass position 142. Furthermore, the valve core 200 is divided into two layers: the first flow channel 211 and the second flow channel 212 are in one layer, and the third flow channel 213 and the fourth flow channel 214 are in another layer.

[0066] Specifically, the control valve includes the following six connection modes:

[0067] Mode 1: The first double-pass position 131 is connected to the second double-pass position 132 through the first flow channel 211, the third double-pass position 133 is connected to the fourth double-pass position 134 through the second flow channel 212, the fifth double-pass position 135 is connected to the second single-pass position 142 through the third flow channel 213, the seventh double-pass position 137 is connected to the sixth double-pass position 136 through the fourth flow channel 214, and the first single-pass position 141 remains closed.

[0068] Mode 2: The first double-pass position 131 is connected to the second double-pass position 132 through the first flow channel 211, the third double-pass position 133 is connected to the fourth double-pass position 134 through the second flow channel 212, the fifth double-pass position 135 is connected to the first single-pass position 141 through the third flow channel 213, the seventh double-pass position 137 is connected to the sixth double-pass position 136 through the fourth flow channel 214, and the second single-pass position 142 remains closed.

[0069] Mode 3: The first double-pass position 131 is connected to the third double-pass position 133 through the first flow channel 211, the second double-pass position 132 is connected to the fourth double-pass position 134 through the second flow channel 212, the fifth double-pass position 135 is connected to the second single-pass position 142 through the third flow channel 213, the seventh double-pass position 137 is connected to the sixth double-pass position 136 through the fourth flow channel 214, and the first single-pass position 141 remains closed.

[0070] Mode 4: The first double-pass position 131 is connected to the third double-pass position 133 through the first flow channel 211, the second double-pass position 132 is connected to the fourth double-pass position 134 through the second flow channel 212, the fifth double-pass position 135 is connected to the first single-pass position 141 through the third flow channel 213, the seventh double-pass position 137 is connected to the sixth double-pass position 136 through the fourth flow channel 214, and the second single-pass position 142 remains closed.

[0071] Mode 5: The first double-pass position 131 is connected to the second double-pass position 132 through the first flow channel 211, the third double-pass position 133 is connected to the fourth double-pass position 134 through the second flow channel 212, the fifth double-pass position 135 is connected to the sixth double-pass position 136 through the third flow channel 213, the second single-pass position 142 is connected to the seventh double-pass position 137 through the fourth flow channel 214, and the first single-pass position 141 remains closed.

[0072] Mode 6: The first double-pass position 131 is connected to the second double-pass position 132 through the first flow channel 211, the third double-pass position 133 is connected to the fourth double-pass position 134 through the second flow channel 212, the fifth double-pass position 135 is connected to the sixth double-pass position 136 through the third flow channel 213, the first single-pass position 141 is connected to the seventh double-pass position 137 through the fourth flow channel 214, and the second single-pass position 142 remains closed.

[0073] Thus, the control valve provided in this application replaces two four-way valves and one three-way water valve, and the three-way valve and the four-way valve are integrated to form a five-way valve. Therefore, it can also be considered that the control valve provided in this application integrates a four-way valve and a five-way valve.

[0074] This application also provides a thermal management system, which includes the control valve described in any of the above embodiments.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A control valve, characterized in that, The valve body (100) includes a valve body (100) and a single valve core (200). The valve body (100) has a valve cavity (110). The direction around the central axis of the valve cavity (110) is defined as a preset circumferential direction. The valve body (100) has 4n connecting positions (120) connecting the valve cavity (110) along the preset circumferential direction, where n is a positive integer. The central angle corresponding to each connecting position (120) is equal to 90° / n. A portion of two adjacent connecting positions (120) are connected along the preset circumferential direction to form a double-pass connecting position. Another portion of the connecting positions (120) are not connected along the preset circumferential direction to form a single-pass connecting position. The single-pass connecting positions are distributed adjacent to each other. Two adjacent single-pass connecting positions are defined as a group of variable-pass positions (150). The double-pass connecting positions and the variable-pass positions (150) are distributed along the preset circumferential direction on the periphery of the valve core (200). The valve core (200) is rotatably disposed in the valve cavity (110). The valve core (200) is provided with n through-flow channels (210) that penetrate itself. Each through-flow channel (210) has two spaced-apart flow ports (220) on the side of the valve core (200). Each flow port (220) can be connected to a corresponding connection position (120). The 2n flow ports (220) are distributed along the preset circumferential direction on the circumference of the valve core (200). Adjacent flow ports (220) are equidistantly distributed along the preset circumferential direction, and the central angle corresponding to each flow port (220) is equal to 90° / n. The central angle t corresponding to the portion between the two flow openings (220) of each of the through flow channels (210) satisfies 2*90° / n≤t≤(2n-1)*90° / n; The central angle t corresponding to the portion between the two flow openings (220) of each of the aforementioned through-flow channels (210) is 270° / n; n=2r, where r is a positive integer, and the valve core (200) is divided into r layers along its own axis, each layer having 2 through channels (210). The through-flow channel (210) of each layer is rotationally symmetrical about the central axis of the valve chamber (110).

2. The control valve according to claim 1, characterized in that, n equals 4, the number of the double-pass connection bits is 7, and the number of the variable pass bit group (150) is 1.

3. The control valve according to claim 1, characterized in that, The valve core (200) includes a layer plate (230) and an interlayer partition plate (240). A plurality of the layer plates (230) are spaced apart along the central axis of the valve cavity (110). A plurality of the interlayer partition plates (240) are disposed between adjacent layer plates (230) and surround the adjacent layer plates (230) to form a plurality of through flow channels (210).

4. The control valve according to claim 1, characterized in that, It also includes a driver (300) and a connecting shaft (400), one end of which is connected to the valve core (200) and the other end is connected to the driver (300). The driver (300) can drive the connecting shaft (400) to make the valve core (200) rotate relative to the valve body (100) around its own axis.

5. The control valve according to claim 4, characterized in that, The valve core (200) has a first anti-rotation protrusion (250) at one end near the driver (300), and the driver (300) has a second anti-rotation protrusion (310) corresponding to the first anti-rotation protrusion (250). When the valve core (200) rotates a preset angle relative to the valve body (100) around its own axis, the first anti-rotation protrusion (250) and the second anti-rotation protrusion (310) can stop each other to prevent the valve core (200) from continuing to rotate.

6. A thermal management system, characterized in that, Includes the control valve as described in any one of claims 1-5.

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