Multi-way valve, thermal management system and vehicle

Abstract

The utility model provides a multi-way valve, a heat management system and a vehicle. The multi-way valve comprises a valve body, a static valve element, a movable valve element and an electronic expansion valve. The valve body is provided with a plurality of flow channels. The static valve element is arranged in the valve body, and a plurality of through holes communicated with the flow channel are formed in the static valve element. The movable valve element is arranged in the valve body, the movable valve element is provided with at least two conduction grooves, and the movable valve element rotates relative to the static valve element so that different circulation paths can be formed between the conduction grooves and the through hole. The electronic expansion valve is arranged on the at least one flow channel so as to control the flow in the at least one flow channel. The static valve element, the movable valve element and the electronic expansion valve are all integrated on the valve body, the number of control elements in the thermal management system is effectively reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of valves, and particularly to multi-way valves, thermal management systems, and vehicles. Background Art

[0002] In traditional fuel vehicles, the coolant system of the engine and the refrigerant system of the air conditioner are often independent and relatively simple. In new energy vehicles such as pure electric vehicles, in order to save energy and increase the cruising range, the heat of systems such as the motor, battery, and air conditioner is managed uniformly, which is collectively referred to as the thermal management system. This system is more complex than that of traditional fuel vehicles. In plug-in hybrid vehicles, there are both an engine, a motor, a battery, and an air conditioner, etc., and its thermal management system is even more complex. The more components and modes that need to be heated and cooled in the thermal management system, the more complex the control of the fluid becomes, so multi-way valves came into being. The emergence of multi-way valves enables complex thermal management systems to meet control requirements by controlling only a few valves, reducing the control difficulty and also reducing the manufacturing cost.

[0003] In new energy vehicles, since the battery is prone to fire, special consideration needs to be given in the thermal management system. According to the fluid used for battery cooling and heating, the thermal management system is mainly divided into a coolant system (the fluid is coolant) and a refrigerant system (the fluid is the refrigerant used in the air conditioning system). The pressure of the coolant system is relatively low, usually several atmospheres, and it cannot be combined with the air conditioning system. It cools and heats the battery relatively evenly, but with low efficiency. The pressure of the refrigerant system is relatively high, usually dozens of atmospheres, and it can be combined with the air conditioning system. It has high efficiency in cooling and heating the battery, but the cooling is not very uniform.

[0004] In the prior art, multi-way valves are mainly used in coolant systems. In the refrigerant system, currently, it is mainly achieved by the arrangement and combination of a certain number of solenoid valves (switch control) and electronic expansion valves (flow regulation), etc. Its integration is not high, there are many control components, and the manufacturing cost is relatively high.

[0005] Therefore, it is necessary to provide an improved multi-way valve, thermal management system, and vehicle to solve the above problems. Summary of the Utility Model

[0006] This application provides a multi-way valve, a thermal management system, and a vehicle, which can reduce the number of control components, lower the manufacturing cost, and can be applied to the refrigerant system.

[0007] An embodiment of the present application provides a multi-way valve, including: a valve body having a plurality of flow channels; a static valve core disposed in the valve body, and a plurality of through holes communicating with the flow channels are provided on the static valve core; a dynamic valve core disposed in the valve body, the dynamic valve core is provided with a plurality of conduction grooves, and the dynamic valve core rotates relative to the static valve core to form different flow paths between the conduction grooves and the through holes; and an electronic expansion valve disposed on one of the flow channels to control the flow rate in the flow channel.

[0008] Further, the static valve core and the dynamic valve core are stacked, the conduction grooves are arc-shaped, and the plurality of conduction grooves are arranged on a plurality of circumferences concentric with the dynamic valve core.

[0009] Further, the plurality of conduction grooves have multiple lengths; the conduction grooves are groove structures; the conduction grooves open on the side of the dynamic valve core close to the static valve core, and the conduction grooves are closed on the side of the dynamic valve core far from the static valve core.

[0010] Further, the plurality of circumferences include a first circumference, a second circumference, a third circumference, and a fourth circumference arranged from the inside to the outside. The number of the conduction grooves is ten. Two of the conduction grooves are provided on the first circumference, two of the conduction grooves are provided on the second circumference, two of the conduction grooves are provided on the third circumference, and four of the conduction grooves are provided on the fourth circumference.

[0011] Further, the plurality of through holes are arranged in pairs on the static valve core, the plurality of pairs of through holes are arranged on a plurality of circumferences concentric with the static valve core, and each pair of through holes is arranged on the same circumference; the plurality of circumferences on the static valve core are correspondingly arranged with the plurality of circumferences on the dynamic valve core.

[0012] Further, among the plurality of pairs of through holes, at least one pair of the through holes has the same shape; at least one pair of the through holes has different shapes, one of the through holes is a round hole, and the other through hole is an oval hole.

[0013] Further, the plurality of circumferences include a fifth circumference, a sixth circumference, a seventh circumference, and an eighth circumference sequentially distributed from the inside to the outside. There are eight pairs of through holes on the static valve core, and two pairs of through holes are distributed on each of the circumferences.

[0014] Further, the flow channel includes a transverse groove and a vertical groove communicating with each other. The valve body has an inner joint surface abutting against the static valve core. The vertical groove includes a first opening provided on the inner joint surface, and the transverse groove includes a second opening provided on the side surface of the valve body.

[0015] Further, the flow channel includes a groove provided on the inner joint surface, and the groove communicates with two of the first openings.

[0016] Further, the first openings are respectively aligned with the through holes. The multi-way valve further includes a plurality of seals. A sealing groove is provided on the outer periphery of the first opening, and the seals are arranged in the sealing groove.

[0017] Further, the multi-way valve further includes a plurality of connectors fixed on the valve body. The connectors are arranged at the second openings and communicate with the transverse grooves.

[0018] Further, both the number of the connectors and the number of the second openings are eleven; the number of the flow paths is ten; the multi-way valve further includes a plug fixed on the valve body. The transverse groove further includes a third opening provided on the side surface of the valve body, and the plug seals the third opening.

[0019] Further, one of the first openings is simultaneously communicated with a balance hole, and the balance hole extends from the first opening to the outside of the valve body.

[0020] Further, the multi-way valve further includes check valves. The check valves are arranged in the flow channels; the number of the check valves is five.

[0021] Further, the electronic expansion valve includes a valve body assembly, a coil wrapper and an interface. The coil wrapper is sleeved on the outside of the valve body assembly. The interface is arranged on one side of the coil wrapper. The coil wrapper and the interface are located outside the valve body, and the valve body assembly protrudes into the valve body.

[0022] Further, it further includes a transmission spool, an actuator, a transmission shaft and a valve cover arranged on the valve body. The transmission spool is fixed to the moving spool. The actuator drives the transmission shaft to rotate, and the transmission shaft drives the transmission spool and the moving spool to rotate.

[0023] Further, it further includes an angle measurement assembly; the angle measurement assembly includes an angle sensor and a magnet. The magnet is arranged in the valve body and can rotate with the transmission spool, and the angle sensor is arranged on the valve cover.

[0024] An embodiment of the present application further provides a thermal management system, including the above-mentioned multi-way valve.

[0025] An embodiment of the present application further provides a vehicle, including the above-mentioned thermal management system.

[0026] In some embodiments, the static spool, the moving spool and the electronic expansion valve of the above technical solution are all arranged on the valve body. The integration degree of the multi-way valve is relatively high, effectively reducing the number of control elements in the thermal management system, reducing the manufacturing cost, and can also be applied to the refrigerant system. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the multi-way valve according to an exemplary embodiment of the present application.

[0028] Figure 2 It is Figure 1 a schematic diagram of another perspective of the multi-way valve in

[0029] Figure 3 It is Figure 1 an exploded view of the multi-way valve in

[0030] Figure 4 It is Figure 1 a top view of the multi-way valve in

[0031] Figure 5 It is Figure 4 a cross-sectional view of the multi-way valve along line A-A in

[0032] Figure 6 It is Figure 4 a cross-sectional view of the multi-way valve along line B-B in

[0033] Figure 7 It is Figure 6 a partially enlarged view in

[0034] Figure 8 It is Figure 3 a schematic diagram of the valve body in

[0035] Figure 9 It is Figure 8 a schematic diagram of another perspective of the valve body in

[0036] Figure 10 It is Figure 8 a schematic diagram of yet another perspective of the valve body in

[0037] Figure 11 It is Figure 8 a bottom view of the valve body in

[0038] Figure 12 It is Figure 3 a schematic diagram of the moving valve core in

[0039] Figure 13 It is Figure 11 a schematic diagram of another perspective of the moving valve core in

[0040] Figure 14 It is Figure 3 a schematic diagram of the static valve core in

[0041] Figure 15 It is Figure 3 a schematic diagram of the transmission valve core in

[0042] Figure 16 It is Figure 14Schematic diagram of another perspective of the middle transmission valve core.

[0043] Figure 17 is Figure 3 Schematic diagram of the middle valve cover.

[0044] Figure 18 Schematic diagram of the thermal management system of the exemplary embodiment of the present application.

[0045] Explanation of the reference numerals in the drawings:

[0046] 1. Valve body; 101. Flow channel; 1011. First opening; 1012. Second opening; 1013. Third opening; 1014. Sealing groove; 1015. Balance hole; 1016. Second fixing hole; 1017. Fourth fixing hole; 1018. Groove; 102. Inner joint surface; 1021. First protrusion; 103. Transverse groove; 104. Vertical groove; 105. First side; 106. Second side; 107. Third side; 108. Fourth side; 109. Valve cavity; 110. Central hole; 2. Static valve core; 21. Through hole; S11. Through hole; S12. Through hole; S21. Through hole; S22. Through hole; S31. Through hole; S32. Through hole; S41. Through hole; S42. Through hole; S51. Through hole; S52. Through hole; S61. Through hole; S62. Through hole; E11. Through hole; E12. Through hole; E31. Through hole; E32. Through hole; 211. Fifth circumference; 212. Sixth circumference; 213. Seventh circumference; 214. Eighth circumference; 22. First recess; 23. Second through hole; 3. Moving valve core; 31. Conducting groove; 311. First circumference; 3111. Conducting groove; 3112. Conducting groove; 312. Second circumference; 3121. Conducting groove; 3122. Conducting groove; 313. Third circumference; 3131. Conducting groove; 3132. Conducting groove; 314. Fourth circumference; 3141. Conducting groove; 3142. Conducting groove; 3143. Conducting groove; 3144. Conducting groove; 32. Second recess; 33. Third through hole; 4. Electronic expansion valve; 41. Valve body assembly; 42. Coil wrapper; 43. Connector; 5. Transmission valve core; 51. Second protrusion; 52. First through hole; 521. First mounting hole; 522. Fourth mounting hole; 6. Actuator; 61. Actuator pressure plate; 611. Third fixing hole; 612. Third fixing piece; 7. Transmission shaft; 71. Second mounting hole; 72. First fixing piece; 8. Angle measurement component; 81. Angle sensor; 82. Magnet; 9. Valve cover; 91. Receiving groove; 92. Seventh sealing ring; 93. Eighth sealing ring; 94. Sixth sealing ring; 10. Check valve; 1010. Third sealing ring; C1. First check valve; C2. Second check valve; C3. Third check valve; C4. Fourth check valve; C5. Fifth check valve; 11. Connector; P1. First connector; P2. Second connector; P3. Third connector; P4. Fourth connector; P5. Fifth connector; P6. Sixth connector; P7. Seventh connector; P8. Eighth connector; P9. Ninth connector; P10. Tenth connector; P11. Eleventh connector; 111. First sealing ring; 112. First fixing hole; 113. Bolt; 12. Plug; 121. Second sealing ring; 13. Sealing member; 14. Friction sleeve; 15. Washer; 16. Isolation sleeve; 161. Receiving space; 162. Fourth sealing ring; 163. Fifth sealing ring; 17. Bearing; 18. Magnet bracket; 181. Third mounting hole; 19. Second fixing piece;20. Fourth fixing member; 30. Fifth fixing member; 50. Frustum. Detailed implementation mode

[0047] Here, in combination with the accompanying drawings, the technical solutions in the embodiments (or "implementation modes") of the present application will be clearly and completely described. When the following description involves the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0048] If there are terms related to directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), then such terms are only used to explain the relative positional relationships and motion conditions between components in a certain specific posture (as shown in the accompanying drawings); if this specific posture changes, then the directional indication or positional relationship also changes accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be understood as indicating or implying relative importance.

[0049] See Figures 1 to 5 As shown, the present application provides a multi-way valve, including a valve body 1, a static valve core 2, a dynamic valve core 3 and an electronic expansion valve 4. The valve body 1 has several flow channels 101. The static valve core 2 is arranged in the valve body 1, and several through holes 21 communicating with the flow channels 101 are arranged on the static valve core 2. The dynamic valve core 3 is arranged in the valve body 1, and several conduction grooves 31 are arranged on the dynamic valve core 3. The dynamic valve core 3 rotates relative to the static valve core 2 to form different flow paths between the conduction grooves 31 and the through holes 21. The electronic expansion valve 4 is arranged on one of the flow channels 101 to control the flow rate of the flow channel 101.

[0050] The electronic expansion valve 4 is arranged at the upper part of the multi-way valve, including a valve body assembly 41, a coil wrapper 42 and an interface 43. The coil wrapper 42 is sleeved outside the valve body assembly 41, and the interface 43 is arranged on one side of the coil wrapper 42. Both the coil wrapper 42 and the interface 43 are located outside the valve body 1. The valve body assembly 41 protrudes into the flow channel 101 of the valve body 1, so as to control the flow rate of the flow channel 101 and the flow path flowing through the flow channel 101.

[0051] The multi-way valve further includes a transmission valve core 5, an actuator 6, a transmission shaft 7, an angle measurement assembly 8 and a valve cover 9 disposed inside the valve body 1. The actuator 6 is disposed on the valve body 1, and the transmission shaft 7 is disposed inside the valve body 1. The upper end of the transmission shaft 7 is connected to the actuator 6, and the lower end of the transmission shaft 7 is fixed to the transmission valve core 5. The actuator 6 drives the transmission shaft 7 to rotate, and the transmission shaft 7 drives the transmission valve core 5 and the moving valve core 3 to rotate. The rotation angle of the moving valve core 3 is controlled by controlling the actuator 6. The static valve core 2, the moving valve core 3 and the electronic expansion valve 4 are all disposed on the valve body 1. The integration degree of the multi-way valve is relatively high, effectively reducing the number of control elements and lowering the manufacturing cost.

[0052] Please also refer to Figures 5 to 11 As shown, a valve cavity 109 is provided inside the valve body 1, and an inner engagement surface 102 that abuts against the static valve core 2 is provided inside the valve cavity 109. The flow channel 101 includes a transverse groove 103 and a vertical groove 104 that communicate with each other. The vertical groove 104 includes a first opening 1011 provided on the inner engagement surface 102, and the transverse groove 103 includes a second opening 1012 and a third opening 1013 provided on the side surface of the valve body 1.

[0053] The flow channel 101 further includes a groove 1018 provided on the inner engagement surface 102. The groove 1018 is used to directly connect two first openings 1011, thereby connecting two through holes 21. In the embodiment of the present application, the number of grooves 1018 is three.

[0054] In the illustrated embodiment, the number of second openings 1012 is eleven, and the number of third openings 1013 is three. The side surface of the valve body 1 includes a first side surface 105, a second side surface 106, a third side surface 107 and a fourth side surface 108. Three second openings 1012 are provided on the first side surface 105, two second openings 1012 and one third opening 1013 are provided on the second side surface 106, two second openings 1012 and two third openings 1013 are provided on the third side surface 107, and four second openings 1012 are provided on the fourth side surface 108.

[0055] The multi-way valve further includes a plurality of connectors 11 fixed to the valve body 1. The connectors 11 are provided at the second openings 1012 and communicate with the transverse groove 103. The flowing medium enters from the connectors 11, flows through the second openings 1012 and then enters the transverse groove 103.

[0056] The number of connectors 11 is eleven, which are respectively a first connector P1, a second connector P2, a third connector P3, a fourth connector P4, a fifth connector P5, a sixth connector P6, a seventh connector P7, an eighth connector P8, a ninth connector P9, a tenth connector P10, and an eleventh connector P11.

[0057] The third joint P3, the tenth joint P10, and the eleventh joint P11 are provided on the first side surface 105 of the valve body 1. The second joint P2 and the fifth joint P5 are provided on the second side surface 106 of the valve body 1. The eighth joint P8 and the ninth joint P9 are provided on the third side surface 107 of the valve body 1. The first joint P1, the fourth joint P4, the sixth joint P6, and the seventh joint P7 are provided on the fourth side surface 108 of the valve body 1.

[0058] The joint 11 is provided with a first fixing hole 112, and the valve body 1 is provided with a second fixing hole 1016. It is assembled to the first fixing hole 112 and the second fixing hole 1016 through a bolt 113 to connect the valve body 1 and the joint 11. The multi-way valve further includes a plug 12 fixed on the valve body 1, and the plug 12 plugs the third opening 1013. In the illustrated embodiment, the number of plugs 12 is three.

[0059] The multi-way valve further includes a plurality of first sealing rings 111 and a plurality of second sealing rings 121. The first sealing ring 111 is provided between the joint 11 and the valve body 1 to seal the gap between the valve body 1 and the joint 11. The second sealing ring 121 is provided between the plug 12 and the valve body 1 to seal the gap between the valve body 1 and the plug 12.

[0060] The first opening 1011 is respectively aligned with a plurality of through holes 21. In the illustrated embodiment, the number of the first openings 1011 is sixteen, and six of the first openings 1011 are communicated with each other through grooves 1018.

[0061] On the inner joint surface 102, a sealing groove 1014 is provided on the outer periphery of the first opening 1011. The multi-way valve further includes a plurality of seals 13. The seals 13 are provided in the sealing groove 1014 to make the inner joint surface 102 fit with the upper surface of the static valve core 2.

[0062] One of the first openings 1011 is simultaneously communicated with a balance hole 1015, and the balance hole 1015 extends from the first opening 1011 to the outside of the valve body 1. The balance hole 1015 can help to balance the internal pressure of the valve body 1, avoid the multi-way valve from jamming or moving inflexibly due to the pressure difference, and improve the response speed and operation flexibility of the multi-way valve.

[0063] In the embodiment of the present application, the inner joint surface 102 and the static valve core 2 are plane-sealed. In addition, in some embodiments, cylindrical surface sealing or spherical surface sealing can also be adopted between the valve body 1 and the static valve core 2. The number of the seals 13 is twelve, and nine of the seals respectively seal one first opening 1011, and three of the seals simultaneously seal two first openings 1011, that is, the six first openings 1011 connected through the groove 1018. No seal is provided on the first opening 1011 communicated with the balance hole 1015.

[0064] The multi-way valve further includes a check valve 10. The check valve 10 is disposed in the flow channel 101, and the check valve 10 controls the flow direction of the medium in the flow channel 101 where it is located. In the illustrated embodiment, the number of check valves 10 is five, namely the first check valve C1, the second check valve C2, the third check valve C3, the fourth check valve C4, and the fifth check valve C5. At least one check valve 10 and the electronic expansion valve 4 are located in the same flow channel 101 to control the flow rate and flow direction of the medium in this flow channel 101 at the same time. The multi-way valve further includes a third sealing ring 1010. The third sealing ring 1010 is disposed between the check valve 10 and the valve body 1 to seal the gap between the valve body 1 and the check valve 10 and improve the sealing performance of the multi-way valve.

[0065] On the inner joint surface 102, a first convex portion 1021 is provided along the outer edge of the inner joint surface 102, and the number of the first convex portions 1021 is three.

[0066] See Figure 12 and Figure 13 As shown, a plurality of conduction grooves 31 are all arc-shaped and are arranged on a plurality of circumferences concentric with the moving valve core 3. The plurality of circumferences include a first circumference 311, a second circumference 312, a third circumference 313, and a fourth circumference 314 arranged from the inside to the outside.

[0067] The number of the conduction grooves 31 is ten. The first circumference 311 is provided with a conduction groove 3111 and a conduction groove 3112, the second circumference 312 is provided with a conduction groove 3121 and a conduction groove 3122, the third circumference 313 is provided with a conduction groove 3131 and a conduction groove 3132, and the fourth circumference 314 is provided with a conduction groove 3141, a conduction groove 3142, a conduction groove 3143, and a conduction groove 3144. The conduction grooves 31 are all groove structures, which are open on the side of the moving valve core 3 close to the static valve core 2 and closed on the side of the moving valve core 3 far from the static valve core 2.

[0068] A number of the conduction grooves 31 have multiple lengths. The lengths of the conduction grooves 31 provided on the first circumference 311, the second circumference 312, the third circumference 313, and the fourth circumference 314 are different.

[0069] In the illustrated embodiment, on the side of the moving valve core 3 far from the static valve core 2, a second concave portion 32 is provided along the circumferential direction of the moving valve core 3, and the number of the second concave portions 32 is three.

[0070] See Figure 14 As shown, on the outer edge of the upper surface of the static valve core 2, a first concave portion 22 is provided. The first convex portion 1021 is clamped in the first concave portion 22 to fix the static valve core 2 and the valve body 1.

[0071] A plurality of through holes 21 are arranged in pairs on the stationary spool valve 2. Specifically, a plurality of pairs of through holes 21 are arranged on a plurality of circumferences concentric with the stationary spool valve 2, and each pair of through holes 21 is arranged on the same circumference. The plurality of circumferences include a fifth circumference 211, a sixth circumference 212, a seventh circumference 213, and an eighth circumference 214 that are sequentially distributed from the inside to the outside. There are eight pairs of through holes 21 on the stationary spool valve 2, and two pairs of through holes 21 are distributed on each circumference. The four circumferences on the stationary spool valve 2 are correspondingly arranged with the four circumferences on the moving spool valve 3, and the moving spool valve 3 rotates to align the conduction groove 31 with different through holes 21.

[0072] There are two pairs of through holes distributed on the fifth circumference 211: through hole S11 and through hole S12, through hole S51 and through hole S52. There are two pairs of through holes distributed on the sixth circumference 212: through hole S21 and through hole S22, through hole S31 and through hole S32. There are two pairs of through holes distributed on the seventh circumference 213: through hole S41 and through hole S42, through hole S61 and through hole S62. There are two pairs of through holes distributed on the eighth circumference 214: through hole E11 and through hole E12, through hole E31 and through hole E32.

[0073] Among the eight pairs of through holes 21, except for through hole E11 and through hole E12, through hole E31 and through hole E32, the shapes and sizes of each pair of through holes are the same. The shape of the through hole can be a round hole, or a strip hole, a square hole, a polygonal hole, etc. The present application does not limit the specific shape of the through hole 21.

[0074] The shapes of through hole E11 and through hole E12 and through hole E31 and through hole E32 are different. One of them is a round hole, and the other is a waist-shaped hole. In the illustrated embodiment, through holes E11 and E31 are round holes, and through holes E12 and E32 are waist-shaped holes. In other embodiments, through holes E12 and E32 can also be other shapes with a gradual change along the circumferential direction.

[0075] The stationary spool valve 2 and the moving spool valve 3 are stacked. When the stationary spool valve 2 and the moving spool valve 3 rotate relative to each other, the area of the conduction groove 31 covering through hole E12 or through hole E32 changes, thereby the flow rate of the corresponding flow channel 101 can be adjusted. Further, the opening shapes of through holes E12 and E32 on the upper and lower surfaces of the stationary spool valve 2 can be different. The opening size of through holes E12 and E32 on the upper surface of the stationary spool valve 2 can be larger than the opening size of through holes E12 and E32 on the lower surface of the stationary spool valve 2, which can reduce the pressure of the flowing medium and prevent the moving spool valve 3 from being pushed open.

[0076] See Figure 15 As shown, a second convex portion 51 is provided on the upper surface of the transmission spool valve 5. The moving spool valve 3 is arranged above the transmission spool valve 5. The second convex portion 51 is clamped in the second concave portion 32 to fix the transmission spool valve 5 and the moving spool valve 3, and the transmission spool valve 5 rotates to drive the moving spool valve 3 to rotate. In the illustrated embodiment, the number of the second convex portions 51 is three.

[0077] The multi-way valve further includes an actuator pressing plate 61 and a third fixing member 612. A third fixing hole 611 is provided on the actuator pressing plate 61, and a fourth fixing hole 1017 is provided on the upper surface of the valve body 1. The third fixing member 612 is assembled to the third fixing hole 611 and the fourth fixing hole 1017 to fix the actuator pressing plate 61 and the valve body 1, and the actuator 6 and the valve body 1 are fixed through the actuator pressing plate 61.

[0078] See Figure 15 and Figure 16 As shown, a frustum 50 protruding upward is provided at the center of the transmission valve core 5. A first through hole 52 is provided in the middle of the frustum 50, and the lower end of the transmission shaft 7 extends into the first through hole 52. A first mounting hole 521 is provided on the side surface of the frustum 50. A second mounting hole 71 is provided at the lower end of the transmission shaft 7. The first fixing member 72 is assembled to the first mounting hole 521 and the second mounting hole 71 to fix the transmission shaft 7 and the transmission valve core 5.

[0079] The first fixing member 72 can be a pin, a bolt, a rivet, etc.

[0080] The multi-way valve further includes a gasket 15, and the gasket 15 is provided between the moving valve core 3 and the transmission valve core 5. The gasket 15 is in a waveform, and the elastic force of the gasket 15 makes there be a certain gap between the transmission valve core 5 and the moving valve core 3. At the same time, the gasket 15 abuts against the moving valve core 3 upward, so that the upper surface of the moving valve core 3 fits the lower surface of the static valve core 2.

[0081] In the illustrated embodiment, the moving valve core 3 and the static valve core 2 adopt planar sealing. The sealing plane between the moving valve core 3 and the static valve core 2 divides the cavity where the moving valve core 3 is located into two parts, an inner part is communicated with the flow channel 101 of the valve body 1; the outer part is the outer gap of the moving valve core 3, and the outer gap is communicated with the flow channel 101 with a lower system pressure. Such a design can reduce the rotational torque of the moving valve core 3 because the fluid pressure in some of the flow channels 101 is relatively high and there is a tendency to push up the moving valve core 3. However, since its acting area is small, the pushing force generated is small. At this time, it is ensured that the pre-tightening force of the gasket 15 received by the moving valve core 3 is also small. Therefore, the higher the system pressure, the smaller the rotational torque of the moving valve core 3, and when the system pressure is zero, the rotational torque of the moving valve core 3 is the largest.

[0082] A central hole 110 is provided in the valve body 1, a second through hole 23 is provided in the static valve core 2, and a third through hole 33 is provided in the moving valve core 3. The transmission shaft 7 sequentially passes through the central hole 110, the second through hole 23, the third through hole 33 and the first through hole 52.

[0083] The multi-way valve further includes a friction sleeve 14. The friction sleeve 14 is disposed in the second through hole 23 and sleeved outside the transmission shaft 7. The outer side of the friction sleeve 14 fits against the inner wall of the second through hole 23 formed by the static valve core 2, effectively reducing the friction between the static valve core 2 and the transmission shaft 7.

[0084] See Figure 17 As shown, the valve cover 9 is fixed to the valve body 1 to enclose the valve cavity 109. The static valve core 2, the dynamic valve core 3, and the transmission valve core 5 are all located in the valve cavity 109. The valve cover 9 is provided with a receiving groove 91, and the receiving groove 91 communicates with the valve cavity 109. The multi-way valve further includes a spacer sleeve 16, and the spacer sleeve 16 is received in the receiving groove 91. A receiving space 161 is provided in the spacer sleeve 16.

[0085] The multi-way valve includes a bearing 17, and the bearing 17 is received in the receiving space 161. The bearing 17 is a thrust bearing, providing an upward abutting force to abut against the transmission valve core 5. The pre-tightening force of the washer 15 is sequentially transmitted from the valve cover 9 through the spacer sleeve 16, the bearing 17, and the transmission valve core 5.

[0086] The multi-way valve further includes a magnet holder 18. The magnet holder 18 is located in the receiving space 161, and a part of the magnet holder 18 penetrates through the inner hole of the bearing 17. The magnet holder 18 is provided with a third mounting hole 181, and the frustum 50 is provided with a fourth mounting hole 522. The second fixing member 19 is assembled to the third mounting hole 181 and the fourth mounting hole 522 to fix the magnet holder 18 and the transmission valve core 5.

[0087] A fourth sealing ring 162 and a fifth sealing ring 163 are provided between the spacer sleeve 16 and the valve cover 9. The fourth sealing ring 162 is disposed between the side wall of the spacer sleeve 16 and the valve cover 9, and the fifth sealing ring 163 is disposed between the bottom wall of the spacer sleeve 16 and the valve cover 9.

[0088] The angle measurement assembly 8 is signal-connected to the actuator 6, and the angle measurement assembly 8 transmits the rotation signal of the dynamic valve core 3 to the actuator 6. The angle measurement assembly 8 includes an angle sensor 81 and a magnet 82. The angle sensor 81 is disposed on the valve cover 9, and the magnet 82 is disposed in the valve body 1 and located within the magnet holder 18. The magnet 82 can rotate with the transmission valve core 5, and the magnetic signal of the magnet 82 passes through the spacer sleeve 16 and is transmitted to the angle sensor 81. The actuator 6 controls the rotation of the transmission shaft 7, and the transmission shaft 7 drives the transmission valve core 5 and the dynamic valve core 3 to rotate. The angle sensor 81 monitors the position information of the dynamic valve core 3 and feeds back the rotation signal to the actuator 6, thereby forming a closed-loop control.

[0089] The angle measurement assembly 8 and the valve cover 9 are fixed by a fifth fixing member 30. In the illustrated embodiment, the fifth fixing member 30 can be a plug pin, a bolt, a rivet, etc. A sixth sealing ring 94 is provided between the angle sensor 81 and the valve cover 9 to seal the gap between the angle measurement assembly 8 and the valve cover 9.

[0090] A seventh sealing ring 92 and an eighth sealing ring 93 are provided between the valve cover 9 and the valve body 1 to seal the valve cavity 109 and the receiving groove 91. The valve cover 9 and the valve body 1 are fixed by a fourth fixing member 20. The fourth fixing member 20 can be a plug pin, a bolt, a rivet, etc.

[0091] In the illustrated embodiment, the multi-way valve is equivalent to integrating the combination of 6 solenoid valves and 3 electronic expansion valves into 1 disk valve, 1 electronic expansion valve and 1 angle sensor, reducing the number of wire harness connections and the cost. The disk valve of the multi-way valve can achieve the switching function of 6 channels and the flow regulation function of 2 channels.

[0092] The multi-way valve can be applied to Figure 18 the thermal management system shown. In this embodiment, the multi-way valve is used in the refrigerant system. In other embodiments, the multi-way valve can also be applied to the coolant system.

[0093] The thermal management system includes a gas-liquid separator, a compressor, in-vehicle condensation, wind heating PTC, an evaporator, an out-of-vehicle condenser, a power battery direct cooling and heating plate, a plate heat exchanger, and a multi-way valve. The thermal management system includes six control modes. The actuator 6 controls the rotation of the moving valve core 3 to switch different control modes, and a total of 10 different flow paths are formed under different control modes.

[0094] The multi-way valve can achieve at least 6 modes of the refrigerant system. By controlling one actuator, it is possible to keep some flow paths normally open while allowing the flow rate of other flow paths to be adjusted, or to keep some flow paths normally closed while adjusting the flow rate of other flow paths.

[0095] When the thermal management system is in the air-conditioning heating mode, a first flow path is formed between the eleventh joint P11 and the ninth joint P9. A sixth flow path is formed between the fifth joint P5 and the fourth joint P4. The refrigerant in the first flow path flows through the eleventh joint P11, the through hole E32, the conduction groove 3143, the through hole E31, the through hole S62, the through hole S52, the through hole S42, the conduction groove 3131, the through hole S41 and the ninth joint P9. The refrigerant in the sixth flow path flows through the fifth joint P5, the through hole E11, the through hole S31, the conduction groove 3121, the through hole S32 and the fourth joint P4. The flow rate of the first flow path can be adjusted by the size of the through hole E32.

[0096] When the thermal management system is in the battery heating mode, a third flow path is formed between the first joint P1 and the second joint P2. A tenth flow path is formed between the eighth joint P8 and the ninth joint P9. A sixth flow path is formed between the fifth joint P5 and the fourth joint P4. The refrigerant in the third flow path flows through the first joint P1, the through hole S12, the conduction groove 3111, the through hole S11, the through hole S21, and the second joint P2. The refrigerant in the tenth flow path flows through the eighth joint P8, the electronic expansion valve 4, the fifth check valve C5, the through hole E31, the conduction groove 3142, the through hole S62, the through hole S52, the through hole S42, the conduction groove 3131, the through hole S41, and the ninth joint P9. The refrigerant in the sixth flow path flows through the fifth joint P5, the through hole E11, the through hole S31, the conduction groove 3121, the through hole S32, and the fourth joint P4. The electronic expansion valve 4 can control the flow rate of the tenth flow path.

[0097] When the thermal management system is in the air-conditioning heating and battery heating modes, a third flow path is formed between the first joint P1 and the second joint P2. A tenth flow path is formed between the eighth joint P8 and the ninth joint P9. A first flow path is formed between the eleventh joint P11 and the ninth joint P9. A sixth flow path is formed between the fifth joint P5 and the fourth joint P4. In the third mode, the first flow path is located on one branch, the third flow path and the tenth flow path are located on another parallel branch, and the sixth flow path is located on the main return path.

[0098] When the thermal management system is in the battery cooling mode, a second flow path is formed between the eleventh joint P11 and the tenth joint P10. An eighth flow path is formed between the sixth joint P6 and the eighth joint P8. A fourth flow path is formed between the second joint P2 and the fourth joint P4. The refrigerant in the second flow path flows through the eleventh interface P11, the through hole E32, the through hole S61, the conduction groove 3132, the through hole S62, the through hole S52, the conduction groove 3112, the through hole S51, and the tenth joint P10. The refrigerant in the eighth flow path flows through the sixth joint P6, the third check valve C3, the fourth check valve C4, the electronic expansion valve 4, and the eighth joint P8. The refrigerant in the fourth flow path flows through the second joint P2, the through hole S21, the conduction groove 3122, the through hole S22, the first check valve C1, the through hole S32, and the fourth joint P4. The electronic expansion valve 4 can control the flow rate of the eighth flow path.

[0099] When the thermal management system is in the battery cooling and air-conditioning refrigeration mode, a second flow path is formed between the eleventh joint P11 and the tenth joint P10. A ninth flow path is formed between the sixth joint P6 and the seventh joint P7. An eighth flow path is formed between the sixth joint P6 and the eighth joint P8. A fourth flow path is formed between the second joint P2 and the fourth joint P4. A fifth flow path is formed between the third joint P3 and the fourth joint P4. The refrigerant in the ninth flow path flows through the sixth joint P6, the third check valve C3, the through hole E11, the conduction groove 3141, the through hole E12, and the seventh joint P7. The refrigerant in the fifth flow path flows through the third joint P3, the second check valve C2, the through hole S32, and the fourth joint P4. The through hole E11 and the through hole E12 can control the flow rate of the ninth flow path.

[0100] When the thermal management system is in the air-conditioning heating and battery cooling mode, a first flow path is formed between the eleventh joint P11 and the ninth joint P9. A seventh flow path is formed between the fifth joint P5 and the eighth joint P8. A fourth flow path is formed between the second joint P2 and the fourth joint P4. The refrigerant in the seventh flow path flows through the fifth joint P5, the through hole E11, the fourth check valve C4, the electronic expansion valve 4, and the eighth joint P8. The electronic expansion valve 4 can control the flow rate of the seventh flow path.

[0101] An embodiment of the present application further provides a vehicle, including the aforementioned thermal management system. In the embodiment of the present application, the vehicle is a new energy vehicle such as a pure electric vehicle and a plug-in hybrid vehicle.

[0102] The multi-way valve, thermal management system and vehicle of the present application realize the switching of six modes in the thermal management system by setting the static valve core 2, the dynamic valve core 3 and the electronic expansion valve 4, and through the actuator 6 and the angle measurement component 8. The multi-way valve has a high integration degree and fewer wire harness connections, reducing the risk of incorrect wire harness connection. At the same time, the overall control element number of the thermal management system of the present application is small, reducing the manufacturing cost of the multi-way valve.

[0103] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A multi-way valve, characterized in that: include: A valve body having a plurality of flow passages; A static valve core is arranged in the valve body, and the static valve core is provided with a plurality of through holes communicating with the flow channel; A movable valve core is disposed in the valve body, the movable valve core is provided with a plurality of conducting grooves, and the movable valve core rotates relative to the static valve core to form different flow paths between the conducting grooves and the through holes; and The electronic expansion valve is arranged on one of the flow channels to control the flow rate of the flow channel.

2. The multi-way valve according to claim 1, characterized in that: The static valve core and the dynamic valve core are arranged in a superimposed manner, the conducting groove is in an arc shape, and the plurality of conducting grooves are arranged on a plurality of circles concentric with the dynamic valve core.

3. The multi-way valve according to claim 2, characterized in that: The plurality of conducting grooves have multiple lengths; the conducting grooves are groove structures; the conducting grooves are open on a side of the moving valve core close to the static valve core, and the conducting grooves are closed on a side of the moving valve core away from the static valve core.

4. The multi-way valve according to claim 2, characterized in that: The multiple circumferences include a first circumference, a second circumference, a third circumference and a fourth circumference arranged from the inside to the outside. The number of the conducting grooves is ten. Two conducting grooves are arranged on the first circumference, two conducting grooves are arranged on the second circumference, two conducting grooves are arranged on the third circumference, and four conducting grooves are arranged on the fourth circumference.

5. The multi-way valve according to claim 2, characterized in that: The plurality of through holes are arranged in pairs on the static valve core, the plurality of pairs of through holes are arranged on a plurality of circumferences concentric with the static valve core, and each pair of through holes is arranged on the same circumference; the plurality of circumferences on the static valve core are arranged correspondingly to the plurality of circumferences on the moving valve core.

6. The multi-way valve according to claim 5, characterized in that: Among the plurality of pairs of through holes, at least one pair of the through holes has the same shape; at least one pair of the through holes has different shapes, one of the through holes is a round hole, and the other one is a waist-shaped hole.

7. The multi-way valve according to claim 5, characterized in that: The multiple circumferences include a fifth circumference, a sixth circumference, a seventh circumference and an eighth circumference which are sequentially distributed from the inside to the outside. The static valve core is provided with eight pairs of through holes, and each of the circumferences is provided with two pairs of through holes.

8. The multi-way valve according to claim 1, characterized in that: The flow channel includes a transverse groove and a vertical groove that are interconnected. The valve body has an inner joint surface that abuts the static valve core. The vertical groove includes a first opening arranged on the inner joint surface, and the transverse groove includes a second opening arranged on the side of the valve body.

9. The multi-way valve according to claim 8, characterized in that: The flow channel includes a groove arranged on the inner joint surface, and the groove communicates with the two first openings.

10. The multi-way valve according to claim 8, characterized in that: The first openings are aligned with the through holes respectively. The multi-way valve further comprises a plurality of sealing members. A sealing groove is arranged on the outer periphery of the first opening, and the sealing members are arranged in the sealing groove.

11. The multi-way valve according to claim 8, characterized in that: The multi-way valve further comprises a plurality of joints fixed on the valve body, wherein the joints are arranged at the second opening and communicate with the transverse groove.

12. The multi-way valve according to claim 11, characterized in that: The number of the joints and the second openings are both eleven; the number of the flow paths is ten; the multi-way valve also includes a plug fixed on the valve body, and the transverse groove also includes a third opening arranged on the side of the valve body, and the plug blocks the third opening.

13. The multi-way valve according to claim 8, characterized in that: One of the first openings is simultaneously connected to a balancing hole, and the balancing hole extends from the first opening to the outside of the valve body.

14. The multi-way valve according to claim 1, characterized in that: The multi-way valve further includes a one-way valve, which is arranged in the flow channel; the number of the one-way valves is five.

15. The multi-way valve according to claim 1, characterized in that: The electronic expansion valve includes a valve body assembly, a coil wrapping body and a plug interface, the coil wrapping body is sleeved on the outside of the valve body assembly, the plug interface is arranged on one side of the coil wrapping body, the coil wrapping body and the plug interface are located on the outside of the valve body, and the valve body assembly protrudes into the valve body.

16. The multi-way valve according to claim 1, characterized in that: It also includes a transmission valve core, an actuator, a transmission shaft and a valve cover arranged on the valve body, the transmission valve core is fixed to the moving valve core, the actuator drives the transmission shaft to rotate, and the transmission shaft drives the transmission valve core and the moving valve core to rotate.

17. The multi-way valve according to claim 16, characterized in that: It also includes an angle measuring component; the angle measuring component includes an angle sensor and a magnet, the magnet is arranged in the valve body and can rotate with the transmission valve core, and the angle sensor is arranged on the valve cover.

18. A thermal management system, characterized in that: Comprising a multi-way valve as claimed in any one of claims 1 to 17.

19. A vehicle, characterized in that: Comprising the thermal management system of claim 18.

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