Control valve, thermal management system and vehicle

Abstract

The invention belongs to the technical field of thermal management, and particularly relates to a control valve, a thermal management system and a vehicle, the control valve comprises a valve body and a valve core, the valve body is provided with an inner cavity, the valve body is provided with a plurality of valve ports arranged at intervals along the extension direction of the inner cavity, and the valve ports are communicated with the inner cavity; the valve element is arranged in the inner cavity, and the valve element can move relative to the valve body in the extending direction of the inner cavity so as to control communication between the different valve ports. The valve element is provided with a shielding part, and the shielding part moves along with the valve element and is used for shielding part of the valve port so as to adjust the circulation area of the corresponding valve port. According to the control valve disclosed by the invention, the flow can be adjusted while different valve ports are communicated.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal management, and particularly relates to a control valve, a thermal management system, and a vehicle. Background Art

[0002] In related technologies, control valves such as refrigerant four-way valves adopt a full-flow design. During operation, by driving the valve core of the control valve to stay at a relatively fixed position, the medium passes through the control valve at a fixed flow rate. However, when it is necessary to adjust the medium flow rate, the control valves in related technologies cannot meet the working requirements, and additional regulating valves need to be added for flow rate adjustment, resulting in increased costs. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in related technologies to some extent.

[0004] To this end, an embodiment of the present invention provides a control valve that can regulate the flow rate while achieving communication between different valve ports.

[0005] An embodiment of the present invention further provides a thermal management system.

[0006] An embodiment of the present invention further provides a vehicle.

[0007] The control valve according to the embodiment of the present invention includes:

[0008] A valve body having an inner cavity, and a plurality of valve ports are arranged at intervals along the extending direction of the inner cavity on the valve body, and the valve ports communicate with the inner cavity;

[0009] A valve core disposed in the inner cavity, and the valve core is movable relative to the valve body along the extending direction of the inner cavity to control the communication between different valve ports;

[0010] The valve core has an occlusion portion that moves with the valve core and is used to occlude part of the valve ports while controlling the communication between different valve ports to adjust the flow area of the corresponding valve ports.

[0011] The control valve according to the embodiment of the present invention can perform proportional adjustment of the flow rate while achieving communication between different valve ports. When the control valve is applied to a system, there is no need to configure a regulating valve for flow rate adjustment, which reduces the equipment cost. During the process of medium conduction and flow rate adjustment, there is no need to perform interlocking coordination control between different valves, which reduces the control difficulty and the complexity of system control.

[0012] In some embodiments, the plurality of valve ports include a first valve port, a second valve port, a third valve port, and a fourth valve port. The valve core has a first displacement interval and a second displacement interval in the extending direction of the inner cavity relative to the valve body. When the valve core is in the first displacement interval, the first valve port communicates with the second valve port, and the third valve port communicates with the fourth valve port. When the valve core is in the second displacement interval, the first valve port communicates with the fourth valve port, and the third valve port communicates with the second valve port.

[0013] In some embodiments, when the valve core is in some positions in the first displacement interval and some positions in the second displacement interval, the shielding portion shields a part of the opening of the first valve port.

[0014] In some embodiments, the shielding portion includes a first shielding portion and a second shielding portion. The first shielding portion and the second shielding portion are arranged on the valve core at intervals along the extending direction of the inner cavity. When the valve core is in some positions in the first displacement interval, the first shielding portion shields a part of the opening of the first valve port. When the valve core is in some positions in the second displacement interval, the second shielding portion shields a part of the opening of the first valve port.

[0015] In some embodiments, the maximum shielding area z of the first valve port shielded by the first shielding portion 1 and the maximum shielding area z of the first valve port shielded by the second shielding portion 2 satisfy the following formula:

[0016] 1 / 4z ≤ z 1 ≤ z;

[0017] 1 / 4z ≤ z 2 ≤ z;

[0018] where z is the flow area of the first valve port.

[0019] In some embodiments, z 1 and z 2 satisfy the following formula: z 1 + z 2 = z.

[0020] In some embodiments, the valve core has a flow channel and a first hole. The first hole communicates the inner cavity with the flow channel. A sealing member is provided on the outer wall surface of the valve core, and the sealing member abuts against the inner wall surface of the valve body. Different valve ports communicate with each other through the inner cavity to form a medium channel, or different valve ports communicate with each other through the inner cavity and the flow channel to form a medium flow channel.

[0021] In some embodiments, the extending direction of the flow channel is the same as that of the inner cavity, and both ends of the flow channel communicate with the inner cavity.

[0022] In some embodiments, the seal includes a first seal and a second seal. The first shielding portion, the second shielding portion, the first seal, and the second seal are sequentially arranged on the valve core at intervals along the extending direction of the inner cavity. The first valve port, the second valve port, the third valve port, and the fourth valve port are sequentially arranged on the valve body at intervals along the extending direction of the inner cavity.

[0023] A first hole is provided on the valve core between the first shielding portion and the second shielding portion, and on the valve core between the second shielding portion and the first seal.

[0024] In some embodiments, when the valve core is in the first displacement interval, the first shielding portion is located on the side of the first valve port away from the fourth valve port, or the first shielding portion corresponds to the first valve port to block a partial opening of the first valve port. The second shielding portion is located between the first valve port and the second valve port. The first seal is located between the second valve port and the third valve port. The second seal is located on the side of the fourth valve port away from the first valve port.

[0025] When the valve core is in the second displacement interval, the first shielding portion is located on the side of the first valve port away from the fourth valve port. The second shielding portion is located on the side of the first valve port away from the fourth valve port, or the second shielding portion corresponds to the first valve port to block a partial opening of the first valve port. The first seal is located between the first valve port and the second valve port. The second seal is located between the third valve port and the fourth valve port.

[0026] The thermal management system according to an embodiment of the present invention includes the control valve described in any one of the above embodiments.

[0027] The vehicle according to an embodiment of the present invention includes the control valve described in any one of the above embodiments and / or the thermal management system described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural view of the control valve according to an embodiment of the present invention.

[0029] Figure 2 is Figure 1 a schematic structural view in the A-A direction in

[0030] Figure 3 is a schematic structural view of the control valve in another state according to an embodiment of the present invention.

[0031] Figure 4 is Figure 3 The schematic structural view in the B-B direction in the figure.

[0032] Figure 5 is the position comparison diagram of the spool valve in multiple states in the embodiment of the present invention.

[0033] Figure 6 is the position comparison diagram of the spool valve in multiple states in another embodiment of the present invention.

[0034] Figure 7 is the schematic structural view of the spool valve in the embodiment of the present invention.

[0035] Figure 8 is the schematic structural view of the spool valve in another embodiment of the present invention.

[0036] Figure 9 is the schematic sectional view of the spool valve in the embodiment of the present invention.

[0037] Reference numerals:

[0038] 100, control valve;

[0039] 1, valve body; 11, first valve port; 12, second valve port; 13, third valve port; 14, fourth valve port;

[0040] 2, spool valve; 21, flow channel; 22, first hole; 23, first blocking part; 24, second blocking part; 25, first seal; 26, second seal; 27, anti-rotation part;

[0041] 3, motor; 31, first rod body. Detailed implementation manners

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0043] Such as Figures 1-4As shown in the figure, the control valve 100 according to an embodiment of the present invention includes a valve body 1 and a valve core 2. The valve body 1 has an inner cavity, and a plurality of valve ports are arranged at intervals along the extending direction of the inner cavity on the valve body 1. The valve ports are communicated with the inner cavity. The valve core 2 is arranged in the inner cavity. The valve core 2 is movable relative to the valve body 1 along the extending direction of the inner cavity to control the communication between different valve ports. Among them, the extending direction of the inner cavity is the up-and-down direction shown in the figure. It should be understood that by controlling the movement of the valve core 2 in the inner cavity, it is possible to make different valve ports communicate with each other to form a medium channel. For example, the control valve 100 is a direct-acting four-way valve, and through the movement of the valve core 2, it is possible to realize the two-by-two communication of different valve ports. Further, the movement of the valve core 2 can realize the conversion of the communication between different valve ports and realize commutation.

[0044] The valve core 2 has a shielding portion. The shielding portion moves with the valve core 2 and is used to shield some valve ports while controlling the communication between different valve ports to adjust the flow area of the corresponding valve ports. It should be understood that the valve core 2 can move in the extending direction of the inner cavity and stay at any position. After different valve ports communicate with each other to form a medium channel, while ensuring the communication of the medium channel, the valve core 2 can still move within a certain displacement range. At this time, the shielding portion will move with the valve core 2 to adjust the flow rate of a part of the valve ports. That is to say, when the shielding portion does not shield the valve port, the valve port can achieve full-flow conduction. When the opening of the corresponding valve port is partially shielded by the shielding portion, the flow area of the corresponding valve port can be changed, thereby realizing the flow rate adjustment function of the control valve 100.

[0045] Among them, the extending direction of the inner cavity is the up-and-down direction shown in the figure.

[0046] As Figures 1-4 shown, in some embodiments, the plurality of valve ports include a first valve port 11, a second valve port 12, a third valve port 13, and a fourth valve port 14. By driving the valve core 2 to move, the four valve ports can achieve two-by-two communication, thereby forming two medium channels. The valve core 2 has a first displacement range and a second displacement range relative to the valve body 1 in the extending direction of the inner cavity. When the valve core 2 is in the first displacement range, the first valve port 11 is communicated with the second valve port 12, and the third valve port 13 is communicated with the fourth valve port 14. When the valve core 2 is in the second displacement range, the first valve port 11 is communicated with the fourth valve port 14, and the third valve port 13 is communicated with the second valve port 12.

[0047] It should be understood that when the valve core 2 moves within the first displacement range, it can ensure that the first valve port 11 is communicated with the second valve port 12 to form a first medium channel, and the third valve port 13 is communicated with the fourth valve port 14 to form a second medium channel. The valve core 2 can stop at any position within the first displacement range and ensure the communication of the first medium channel and the second medium channel.

[0048] When the valve core 2 moves within the second displacement range, it can ensure that the first valve port 11 communicates with the fourth valve port 14 to form a third medium channel, and the third valve port 13 communicates with the second valve port 12 to form a fourth medium channel. The valve core 2 can stop at any position within the second displacement range, and ensure the communication of the third medium channel and the fourth medium channel.

[0049] In applications, the control valve 100 in the embodiments of the present invention can be applied to the refrigerant thermal management system and used as a four-way reversing valve. The first valve port 11 is for high-pressure medium to flow into the valve body 1, and the third valve port 13 is for low-pressure medium to flow out of the valve body 1. During operation, by driving the valve core 2 to move, the second valve port 12 is selectively communicated with one of the first valve port 11 and the third valve port 13, and the fourth valve port 14 is selectively communicated with the other of the first valve port 11 and the third valve port 13.

[0050] For example, in the refrigeration mode, the valve core 2 is within the first displacement range, the first medium channel and the second medium channel are communicated. The medium on the high-pressure side flows into the valve body 1 from the first valve port 11 and flows out of the valve body 1 from the second valve port 12, and the medium on the low-pressure side flows into the valve body 1 from the third valve port 13 and flows out of the valve body 1 from the fourth valve port 14. In the heating mode, the valve core 2 is within the second displacement range, the third medium channel and the fourth medium channel are communicated. The high-pressure side medium flows into the valve body 1 from the first valve port 11 and flows out of the valve body 1 from the fourth valve port 14, and the low-pressure side medium flows into the valve body 1 from the second valve port 12 and flows out of the valve body 1 from the third valve port 13.

[0051] As Figure 5 and Figure 6 shown, port D is the first valve port 11, port C is the second valve port 12, port S is the third valve port 13, and port E is the fourth valve port 14. The moving range of the valve core 2 between the first state and the second state is the first displacement range, and the moving range of the valve core 2 between the third state and the fourth state is the second displacement range.

[0052] As Figures 1-4 shown, in some embodiments, when the valve core 2 is at some positions within the first displacement range and some positions within the second displacement range, the shielding part shields part of the opening of the first valve port 11. It should be understood that when the valve core 2 is within the first displacement range and moves to some positions, the shielding part will overlap with the first valve port 11, thereby shielding part of the opening of the first valve port 11, reducing the fluid flow rate through the first valve port 11, and realizing the regulation of the flow rate of the first valve port 11. Similarly, when the valve core 2 is within the second displacement range and moves to some positions, the shielding part will overlap with the first valve port 11, thereby shielding part of the opening of the first valve port 11, reducing the fluid flow rate through the first valve port 11, and realizing the regulation of the flow rate of the first valve port 11.

[0053] When the blocking part and the first valve port 11 do not overlap, the blocking part will not affect the fluid flow rate of the first valve port 11, and the first valve port 11 is in a fully open state.

[0054] Further, by moving the valve core 2, the overlapping area of the opening of the blocking part blocking the first valve port 11 is adjusted, so as to realize the proportional adjustment of the medium flow rate.

[0055] The control valve 100 of the embodiment of the present invention can not only meet the functions of the conduction and switching of the medium flow channel 21, but also realize the proportional adjustment function of the fluid flow rate in the medium flow channel 21, and at the same time has a fully open function, improving the practicability of the control valve 100.

[0056] As Figures 1-9 shown, in some embodiments, the blocking part includes a first blocking part 23 and a second blocking part 24. The first blocking part 23 and the second blocking part 24 are arranged on the valve core 2 at intervals along the extending direction of the inner cavity. For some positions of the valve core 2 in the first displacement interval, the first blocking part 23 blocks a part of the opening of the first valve port 11. For some positions of the valve core 2 in the second displacement interval, the second blocking part 24 blocks a part of the opening of the first valve port 11.

[0057] That is to say, by arranging the first blocking part 23 and the second blocking part 24 on the valve core 2, when the valve core 2 is at some positions within the first displacement interval, the first blocking part 23 can overlap with a part of the opening of the first valve port 11. When the valve core 2 is at some positions within the second displacement interval, the second blocking part 24 can overlap with a part of the opening of the first valve port 11, which can arrange the position of the blocking part more flexibly, facilitating the design of the structure of the valve core 2, so as to ensure that the control valve 100 realizes the proportional adjustment of the flow rate on the premise of having the original functions.

[0058] Further, the first blocking part 23 and the second blocking part 24 are bosses arranged on the outer wall surface of the valve core 2. The bosses have a certain length in the extending direction of the inner cavity. Based on the length dimension of the bosses in the extending direction of the inner cavity, the maximum overlapping area between the bosses and the first valve port 11 can be determined, which is convenient for determining the proportional adjustment range of the medium flow rate in the first valve port 11.

[0059] For example, when the length dimension of the bosses in the extending direction of the inner cavity is half of the radial dimension of the first valve port 11, the flow rate of the first valve port 11 can be adjusted within the range of 50%-100%.

[0060] Optionally, the boss is an annular boss arranged on the outer wall surface of the valve core 2, and the annular boss is coaxially arranged with the valve core 2. Or, the boss is a block-shaped boss arranged on the outer wall surface of the valve core 2, and the block-shaped boss is arranged on the side of the valve core 2 close to the first valve port 11.

[0061] In some embodiments, the maximum occlusion area z of the first occlusion portion 23 occludes the first valve port 11 1 and the maximum occlusion area z of the second occlusion portion 24 occludes the first valve port 11 2 satisfies the following formula:

[0062] 1 / 4z ≤ z 1 ≤ z;

[0063] 1 / 4z ≤ z 2 ≤ z;

[0064] where z is the flow area of the first valve port 11.

[0065] Taking the control valve 100 applied to the refrigerant thermal management system as an example, when z 1 is equal to z 2 then the flow rate adjustment ranges of the first valve port 11 in the refrigeration mode and the heating mode are the same. When z 1 is not equal to z 2 then the flow rate adjustment ranges of the first valve port 11 in the refrigeration mode and the heating mode are different. Therefore, according to the requirements of the flow rate adjustment ranges in the refrigeration mode and the heating mode under actual working conditions, the sizes of the corresponding first occlusion portion 23 and second occlusion portion 24 can be designed.

[0066] Specifically, the value of z 1 can be 1 / 4z, 1 / 2z, 3 / 4z, 4 / 5z or z. For example, when z 1 takes the value of 1 / 4z, the maximum occlusion area of the first occlusion portion 23 for the first valve port 11 is 1 / 4z. At this time, the flow rate adjustment range of the first valve port 11 is 75% - 100%. When z 1 takes the value of z, the maximum occlusion area of the first occlusion portion 23 for the first valve port 11 is z. That is to say, in some positions, the first occlusion portion 23 can completely occlude the first valve port 11. At this time, the flow rate adjustment range of the first valve port 11 is 0 - 100%.

[0067] z 2 can be 1 / 4z, 1 / 2z, 3 / 4z, 4 / 5z or z. Among them, when z 2 takes the value of 1 / 4z, the maximum occlusion area of the first occlusion portion 23 for the first valve port 11 is 1 / 4z. At this time, the flow rate adjustment range of the first valve port 11 is 75% - 100%. When z 2 takes the value of z, the maximum occlusion area of the first occlusion portion 23 for the first valve port 11 is z. That is to say, in some positions, the first occlusion portion 23 can completely occlude the first valve port 11. At this time, the flow rate adjustment range of the first valve port 11 is 0 - 100%.

[0068] For example, z1 takes the value of 1 / 4z, z 2 can take the values of 1 / 4z, 1 / 2z, 3 / 4z or 4 / 5z. For another example, z 1 takes the value of 1 / 2z, z 2 can take the values of 1 / 2z, 3 / 4z or 4 / 5z. For yet another example, z 1 takes the value of z, z 2 can take the value of z.

[0069] In the above multiple value examples of z 1 and z 2 the dimensional structures of the valve body 1 and the valve core 2 need to be adjusted specifically. Different value examples will cause the movement stroke between the valve body 1 and the valve core 2 to change, and the dimensional relationships on the valve body 1 and the valve core 2 may need to be adjusted adaptively to meet the corresponding flow regulation range.

[0070] In some embodiments, z 1 and z 2 satisfy the following formula: z 1 +z 2 =z. For example, z 1 takes the value of 1 / 2z, z 2 takes the value of 1 / 2z. For another example, z 1 takes the value of 1 / 4z, z 2 takes the value of 3 / 4z. For yet another example, z 1 takes the value of 3 / 4z, z 2 takes the value of 1 / 4z.

[0071] When z 1 and z 2 satisfy the following formula: z 1 +z 2 =z, the dimensional relationship between the valve body 1 and the valve core 2 can remain unchanged, and only relatively small changes need to be made to the dimensional structures of the first blocking portion 23 and the second blocking portion 24 to adapt to different examples.

[0072] When z 1 =z 2 =1 / 2z, it should be understood that when z 1 takes the value of 1 / 2z, the maximum blocking area of the first blocking portion 23 for the first valve port 11 is 1 / 2z, and at this time the flow regulation range of the first valve port 11 is 50%-100%. When z 2 takes the value of 1 / 2z, the maximum blocking area of the first blocking portion 23 for the first valve port 11 is 1 / 2z, and at this time the flow regulation range of the first valve port 11 is 50%-100%.

[0073] Such asFigure 5 shows z 1 = z 2 = 1 / 2z, the state diagrams of the control valve as a reversing valve in different working conditions in the thermal management system are shown. At this time, the first state is the state of blocking 50% of the flow area of port D in the refrigeration working condition, the second state is the state of full flow of port D in the refrigeration working condition, the third state is the state of blocking 50% of the flow area of port D in the heating working condition, and the fourth state is the state of full flow of port D in the heating working condition.

[0074] Similarly, when z 1 = 3 / 4z and z 2 = 1 / 4z, it should be understood that when z 1 takes the value of 3 / 4z, the first blocking portion 23 can block the maximum area of the first valve port 11 by 3 / 4z. At this time, the flow rate adjustment range of the first valve port 11 is 25% - 100%. When z 2 takes the value of 1 / 4s, the first blocking portion 23 can block the maximum area of the first valve port 11 by 1 / 4z. At this time, the flow rate adjustment range of the first valve port 11 is 75% - 100%.

[0075] Figure 6 shows when z 1 = 3 / 4z and z 2 = 1 / 4z, the state diagrams of the control valve as a reversing valve in different working conditions in the thermal management system are shown. At this time, the first state is the state of blocking 75% of the flow area of port D in the refrigeration working condition, the second state is the state of full flow of port D in the refrigeration working condition, the third state is the state of blocking 25% of the flow area of port D in the heating working condition, and the fourth state is the state of full flow of port D in the heating working condition.

[0076] Figure 5 and Figure 6 shows two groups of examples when z 1 + z 2 = z. Under the condition of keeping the structural dimension relationship between the valve body 1 and the valve core 2 unchanged, by adaptively adjusting the sizes of the first blocking portion 23 and the second blocking portion 24, two different flow rate adjustment ranges can be achieved.

[0077] For example Figures 7-9 as shown, in some embodiments, the valve core 2 has a flow channel 21 and a first hole 22. The first hole 22 communicates the inner cavity with the flow channel 21. A seal is provided on the outer wall surface of the valve core 2, and the seal abuts against the inner wall surface of the valve body 1. Different valve ports are communicated through the inner cavity to form a medium channel, or different valve ports are communicated through the inner cavity and the flow channel 21 to form a medium flow channel 21.

[0078] It should be understood that the seal disposed on the outer wall surface of the valve core 2 can divide the inner cavity between the outer wall surface of the valve core 2 and the inner wall surface of the valve body 1, such that the inner cavities on both sides of the seal form two relatively independent chambers. Different valve ports can be directly communicated through the inner cavity. However, for some valve ports, due to the arrangement of the seal, they cannot be directly connected through the inner cavity, and thus the flow channels 21 and the first holes 22 arranged on the valve core 2 can be used to connect different chambers, thereby realizing the communication between different valve ports.

[0079] For example, when the valve core 2 is in the first displacement range, the first valve port 11 and the second valve port 12 are communicated. Since the second shielding portion 24 is an annular boss, the medium entering the valve body 1 through the first valve port 11 cannot directly flow to the second valve port 12 through the inner cavity. Therefore, a first medium flow channel 21 is formed between the first valve port 11 and the second valve port 12 through the inner cavity, the first hole 22, and the flow channel 21 to achieve communication; the third valve port 13 and the fourth valve port 14 can form a second medium flow channel 21 through the inner cavity to achieve communication, and the first medium flow channel 21 and the second medium flow channel 21 are separated by the seal.

[0080] Furthermore, the seal in the embodiment of the present invention is an O-ring. A seal groove is provided on the outer wall surface of the valve core 2, and the O-ring is disposed in the seal groove.

[0081] As Figures 7-9 shown, in some embodiments, the extending direction of the flow channel 21 is the same as that of the inner cavity, and both ends of the flow channel 21 are communicated with the inner cavity. It should be understood that under the condition of high system pressure difference, due to the design of the flow channel 21, the valve core 2 can also easily perform reciprocating motion, complete the commutation action under a relatively high pressure difference condition, balance the pressure difference, and at the same time serve as the fluid flow channel 21, simplifying the structure of the valve core 2.

[0082] As Figures 1-9 shown, in some embodiments, the seal includes a first seal 25 and a second seal 26. The first shielding portion 23, the second shielding portion 24, the first seal 25, and the second seal 26 are sequentially and spacedly arranged on the valve core 2 along the extending direction of the inner cavity. The first valve port 11, the second valve port 12, the third valve port 13, and the fourth valve port 14 are sequentially and spacedly arranged on the valve body 1 along the extending direction of the inner cavity. The first hole 22 is provided on the valve core 2 between the first shielding portion 23 and the second shielding portion 24 and on the valve core 2 between the second shielding portion 24 and the first seal 25.

[0083] Further, when the valve core 2 is in the first displacement range, the first blocking portion 23 is located on the side of the first valve port 11 away from the fourth valve port 14, or the first blocking portion 23 corresponds to the first valve port 11 to block a part of the opening of the first valve port 11. The second blocking portion 24 is located between the first valve port 11 and the second valve port 12. The first seal 25 is located between the second valve port 12 and the third valve port 13. The second seal 26 is located on the side of the fourth valve port 14 away from the first valve port 11.

[0084] When the valve core 2 is in the second displacement range, the first blocking portion 23 is located on the side of the first valve port 11 away from the fourth valve port 14. The second blocking portion 24 is located on the side of the first valve port 11 away from the fourth valve port 14, or the second blocking portion 24 corresponds to the first valve port 11 to block a part of the opening of the first valve port 11. The first seal 25 is located between the first valve port 11 and the second valve port 12. The second seal 26 is located between the third valve port 13 and the fourth valve port 14.

[0085] As Figure 5 shown, Figure 5 FIG. shows the positional relationship between the valve core 2 and each valve port in four different states. In the displacement range from the first state to the second state, the first valve port 11 and the second valve port 12 are in communication, and the third valve port 13 and the fourth valve port 14 are in communication. During the process of the valve core 2 moving from the first state to the second state, the blocking area of the first blocking portion 23 for the first valve port 11 gradually decreases, and the flow area of the first valve port 11 gradually increases. The moving range of the valve core 2 between the first state and the second state is the first displacement range.

[0086] In the displacement range from the third state to the fourth state, the first valve port 11 and the fourth valve port 14 are in communication, and the third valve port 13 and the second valve port 12 are in communication. During the process of the valve core 2 moving from the third state to the fourth state, the blocking area of the second blocking portion 24 for the first valve port 11 gradually decreases, and the flow area of the first valve port 11 gradually increases. The moving range of the valve core 2 between the third state and the fourth state is the second displacement range.

[0087] Figure 5 FIG. shows that the first valve port 11 can perform a flow rate ratio adjustment of 50%-100% in both the refrigeration condition and the heating condition. Figure 6 FIG. shows that the first valve port 11 can perform a flow rate ratio adjustment of 25%-100% in the refrigeration condition and 75%-100% in the heating condition.

[0088] Figure 5 and Figure 6 The control valves in 1 +z 2 = z, and the valve core 2 and the valve body 1 satisfy the following dimensional relationship:

[0089]

[0090]

[0091] s 1 = t 1 + d 1

[0092] s 2 = t 1 + d 2

[0093] s 3 = d 1 + t 1 + t 2 + d 2 + t 1

[0094]

[0095] m 1 = t 2 + d 2 = s 1

[0096] m 2 = m 1 + t 1 + t 2

[0097] Wherein, L 0 is the distance between the first valve port 11 and the second valve port 12 in the extending direction of the inner cavity;

[0098] L 1 is the distance between the second valve port 12 and the third valve port 13 in the extending direction of the inner cavity;

[0099] L 2 is the distance between the third valve port 13 and the fourth valve port 14 in the extending direction of the inner cavity;

[0100] t 1 is the length of the first shielding portion 23 and the second shielding portion 24 in the extending direction of the inner cavity;

[0101] t 2 is the length of the first sealing member 25 and the second sealing member 26 in the extending direction of the inner cavity;

[0102] d 1 is the dimension between the first valve port 11 and the third valve port 13 in the extending direction of the inner cavity;

[0103] d 2is the dimension of the second valve port 12 and the fourth valve port 14 in the extending direction of the inner cavity;

[0104] s 1 is the distance between the end of the first shielding portion 23 close to the second shielding portion 24 and the end of the second shielding portion 24 close to the first shielding portion 23 in the extending direction of the inner cavity;

[0105] s 2 is the distance between the end of the second shielding portion 24 close to the first seal 25 and the end of the first seal 25 close to the second shielding portion 24 in the extending direction of the inner cavity;

[0106] s 3 is the distance between the end of the first seal 25 close to the second seal 26 and the end of the second seal 26 close to the first seal 25 in the extending direction of the inner cavity.

[0107] The stroke of the valve core 2 moving from the first state to the second state is t 1 , the stroke of the valve core 2 moving from the second state to the third state is m 1 , the stroke of the valve core 2 moving from the third state to the fourth state is t 1 , the total stroke of the valve core 2 moving from the first state to the fourth state is m 2 .

[0108] As Figure 5 and Figure 6 shown, when the valve core 2 and the valve body 1 meet the above conditions, the conduction, switching of different valve ports and the proportional adjustment of the flow rate can be realized.

[0109] As Figures 1-4 shown, in some embodiments, the control valve 100 further includes a driver, the output end of the driver is connected to the valve core 2, and the driver is used to drive the valve core 2 to move relative to the valve body 1 along the extending direction of the inner cavity. It should be understood that the driver can drive the valve core 2 to move in the extending direction of the inner cavity and stop at any position. By controlling the position of the valve core 2, not only can different valve ports be conducted, but also the proportional adjustment of the medium flow rate can be performed on this basis.

[0110] Further, the driver is a motor 3, the motor 3 is connected to the valve body 1, the output end of the motor 3 is connected with a first rod body 31, an external thread section is provided on the first rod body 31, an internal thread section is provided on the valve core 2, and the first rod body 31 and the valve core 2 are in transmission connection through the external thread section and the internal thread section. An anti-rotation portion 27 is provided on the valve core 2, and the anti-rotation portion 27 is in guiding sliding fit with the valve body 1 along the extending direction of the inner cavity, so as to prevent the valve core 2 from rotating around the axis of the inner cavity relative to the valve body 1, enabling the motor to drive the valve core 2 to move in the extending direction of the inner cavity through the first rod body 31. The first rod body 31 and the valve core 2 are in transmission through the principle of a lead screw and nut, and the relative position of the valve core 2 and the valve body 1 can be accurately controlled. When the control valve 100 is applied to the thermal management system of an automobile, the switching between the refrigeration mode and the heating mode can be realized, and at the same time, the medium flow rate can be proportionally adjusted.

[0111] Further, a guiding groove is formed on the inner wall surface of the valve body 1, the length extending direction of the guiding groove is the same as the extending direction of the inner cavity, the anti-rotation portion 27 is a guiding block provided on the valve core 2, and the guiding block is slidably arranged in the guiding groove.

[0112] The thermal management system according to the embodiment of the present invention includes the control valve 100 in any one of the above embodiments, and the control valve 100 is used for reversing the medium and proportionally adjusting the flow rate in the thermal management system.

[0113] In some embodiments, the thermal management system further includes a compressor and a refrigeration and heating device, and the compressor and the refrigeration and heating device are connected to the control valve 100. It should be understood that the refrigeration and heating device can be a condenser and an evaporator. The first valve port 11 and the third valve port 13 of the control valve 100 are connected to the compressor, the second valve port 12 is connected to the condenser, and the fourth valve port 14 is connected to the evaporator. The first valve port 11 is used for the medium on the high-pressure side to flow into the control valve 100, and the third valve port 13 is used for the medium on the low-pressure side to flow out of the control valve 100. By driving the valve core 2 to move, the conversion of the refrigerant flow direction is realized, and further the conversion between the refrigeration mode and the heating mode is realized. At the same time, the refrigerant flow rate can also be proportionally adjusted to meet the working condition requirements of the refrigerant flow rate adjustment.

[0114] The vehicle according to the embodiment of the present invention includes the control valve 100 in any one of the above embodiments and / or the thermal management system in any one of the above embodiments.

[0115] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0116] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0117] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0118] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0119] In the present invention, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0120] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A control valve, characterized in that, comprising: a valve body having an inner cavity, and a plurality of valve ports are arranged on the valve body at intervals along the extending direction of the inner cavity, and the valve ports communicate with the inner cavity; a valve core arranged in the inner cavity, and the valve core is movable relative to the valve body along the extending direction of the inner cavity to control the communication between different valve ports; the valve core has a shielding portion, and the shielding portion moves with the valve core, and is used for shielding part of the valve ports while controlling the communication between different valve ports so as to adjust the flow area of the corresponding valve ports.

2. The control valve according to claim 1, characterized in that, the plurality of valve ports include a first valve port, a second valve port, a third valve port and a fourth valve port, the valve core has a first displacement interval and a second displacement interval relative to the valve body in the extending direction of the inner cavity, when the valve core is in the first displacement interval, the first valve port communicates with the second valve port, the third valve port communicates with the fourth valve port, when the valve core is in the second displacement interval, the first valve port communicates with the fourth valve port, and the third valve port communicates with the second valve port.

3. The control valve according to claim 2, characterized in that, at some positions of the valve core in the first displacement interval and at some positions of the valve core in the second displacement interval, the shielding portion shields part of the opening of the first valve port.

4. The control valve according to claim 3, characterized in that, the shielding portion includes a first shielding portion and a second shielding portion, the first shielding portion and the second shielding portion are arranged on the valve core at intervals along the extending direction of the inner cavity, at some positions of the valve core in the first displacement interval, the first shielding portion shields part of the opening of the first valve port, and at some positions of the valve core in the second displacement interval, the second shielding portion shields part of the opening of the first valve port.

5. The control valve according to claim 4, characterized in that, The maximum occlusion area z of the first occlusion part for occluding the first valve port 1 and the maximum occlusion area z of the second occlusion part for occluding the first valve port 2 satisfy the following formula: 1 / 4z ≤ z 1 ≤ z; 1 / 4z ≤ z 2 ≤ z; wherein, z is the flow area of the first valve port.

6. The control valve according to claim 5, characterized in that, z 1 and z 2 satisfy the following formula: z 1 +z 2 = z.

7. The control valve according to any one of claims 4 to 6, characterized in that, the valve core has a flow channel and a first hole, the first hole communicates the inner cavity with the flow channel, a sealing member is arranged on the outer wall surface of the valve core, the sealing member abuts against the inner wall surface of the valve body, and different valve ports communicate with each other through the inner cavity to form a medium channel, or different valve ports communicate with each other through the inner cavity and the flow channel to form a medium flow channel.

8. The control valve according to claim 7, characterized in that, the extending direction of the flow channel is the same as the extending direction of the inner cavity, and both ends of the flow channel communicate with the inner cavity.

9. The control valve according to claim 8, characterized in that, The seal includes a first seal and a second seal. The first shielding portion, the second shielding portion, the first seal, and the second seal are sequentially arranged on the valve core at intervals along the extending direction of the inner cavity. The first valve port, the second valve port, the third valve port, and the fourth valve port are sequentially arranged on the valve body at intervals along the extending direction of the inner cavity; A first hole is provided on the valve core between the first shielding portion and the second shielding portion and on the valve core between the second shielding portion and the first seal.

10. The control valve according to claim 9, wherein, When the valve core is in the first displacement range, the first shielding portion is located on the side of the first valve port away from the fourth valve port, or the first shielding portion corresponds to the first valve port to block a partial opening of the first valve port. The second shielding portion is located between the first valve port and the second valve port. The first seal is located between the second valve port and the third valve port. The second seal is located on the side of the fourth valve port away from the first valve port; When the valve core is in the second displacement range, the first shielding portion is located on the side of the first valve port away from the fourth valve port. The second shielding portion is located on the side of the first valve port away from the fourth valve port, or the second shielding portion corresponds to the first valve port to block a partial opening of the first valve port. The first seal is located between the first valve port and the second valve port. The second seal is located between the third valve port and the fourth valve port.

11. A thermal management system, wherein, it includes the control valve according to any one of claims 1 to 10.

12. A vehicle, wherein, it includes the control valve according to any one of claims 1 to 10, and / or the thermal management system according to claim 11.

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