Three-way valve, heat management system and new energy automobile

Abstract

The invention discloses a three-way valve, a heat management system and a new energy automobile, and the three-way valve comprises a valve body, a valve core and a driving assembly; a first interface, a second interface and a third interface which are communicated with the valve cavity are formed in the outer wall of the valve body; a first opening, a second opening and a drainage groove are formed in the outer wall of the valve element, and the drainage groove is provided with a first port and a second port; the first opening communicates with the first connector, and the first opening and the first connector are located on the rotating axis of the valve element. In the first working mode, the first port is butted with the second interface, and the third interface is staggered with the second port and the second opening; in the second working mode, the first port is in butt joint with the third interface, and the second interface is staggered with the second port and the second opening; in the third working mode, the second port is in butt joint with the second connector, the second opening is in butt joint with the third connector, and the opening degree of the second connector and / or the third connector can be adjusted along with rotation of the valve element. According to the technical scheme, the flow direction of fluid can be controlled, and meanwhile the flow of the fluid can be adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a three-way valve, a thermal management system and a new energy vehicle. Background Art

[0002] With the trend of power system electrification, thermal management of new energy vehicles is becoming more and more important. The electronically controlled three-way valve can play an important role in coolant control, battery charging and cooling circuits of electric vehicles.

[0003] Most of the three-way valves in the prior art are used to control the flow direction of the fluid. When using the three-way valve, the connection between different channels is achieved directly by adjusting the three-way valve. However, this type of three-way valve only has the function of regulating the flow direction. After switching the connecting channel, when the fluid flow in the connecting channel needs to be adjusted, a new flow regulating valve needs to be introduced, which not only increases the number of parts and the cost of parts, but also increases the complexity of the system structure. Summary of the invention

[0004] The main purpose of the present invention is to provide a three-way valve, which is intended to control the flow direction of the fluid and, at the same time, to adjust the flow rate of the fluid.

[0005] To achieve the above object, the three-way valve proposed in the present invention comprises:

[0006] A valve body, wherein a valve cavity is provided inside, and an outer wall of the valve body is provided with a first interface, a second interface and a third interface communicating with the valve cavity;

[0007] A valve core is rotatably disposed in the valve cavity, the valve core has a rotation axis, the outer wall of the valve core is provided with a first opening, a second opening and a drainage groove, the drainage groove has a first port and a second port, the interior of the valve core is provided with a channel connecting the first opening, the second opening and the drainage groove, the first opening is connected to the first interface, and the first opening and the first interface are located on the rotation axis;

[0008] Wherein, the three-way valve has a first working mode, a second working mode and a third working mode;

[0009] In the first working mode, the first port is connected to the second interface, and the third interface is misaligned with the second port and the second opening;

[0010] In the second working mode, the first port is connected to the third interface, and the second interface is misaligned with the second port and the second opening;

[0011] In the third working mode, the second port is connected to the second interface, the second opening is connected to the third interface, and the opening of the second interface and / or the third interface is adjustable as the valve core rotates.

[0012] Optionally, the first port is located between the second port and the second opening, and an angle α between an axis of the first port and an axis of the second port satisfies: 0°<α≤90°.

[0013] Optionally, the axis of the second opening is perpendicular to the rotation axis, and the axis of the drainage groove is perpendicular to the rotation axis.

[0014] Optionally, the second opening and the drainage groove are located at the same height, and the second port is arranged opposite to the second opening.

[0015] Optionally, axes of the first opening, the second opening and the drainage groove all pass through the center of the valve core.

[0016] Optionally, the valve core is spherical, and the center is the center of the sphere.

[0017] Optionally, the valve core is cylindrical, and the first opening is formed at an end of the valve core, and the second opening and the drainage groove are formed on an outer peripheral surface of the valve core.

[0018] Optionally, a seal is provided between the valve core and the valve body to isolate the first interface, the second interface and the third interface.

[0019] Optionally, at least one of the first interface, the second interface and the third interface is connected to a sealing valve cover.

[0020] Optionally, the sealing valve cover includes the sealing member and an end cover, the end cover is connected to the valve body, one end of the sealing member is connected to the end cover, and the other end is sealingly abutted against the outer surface of the valve core.

[0021] Optionally, the first opening is configured as an inlet, and the second opening and the drainage groove are both configured as outlets.

[0022] Optionally, the first opening is configured as an outlet, and the second opening and the drainage groove are both configured as inlets.

[0023] Optionally, the three-way valve further comprises a driving assembly, wherein the driving assembly is connected to the valve core to drive the valve core to rotate in the valve cavity.

[0024] Optionally, the driving assembly has a valve stem, the valve body is provided with an insertion hole, the valve core is provided with a transmission groove, the valve stem passes through the insertion hole and is engaged with the transmission groove.

[0025] The present invention also provides a thermal management system, which comprises the three-way valve as described above.

[0026] The present invention also provides a new energy vehicle, which includes the thermal management system as described above.

[0027] The technical solution of the present invention is that the three-way valve can switch between the first working mode, the second working mode and the third working mode through the connected first opening, the second opening and the drainage groove, thereby realizing the switching of each flow path and the control of the flow direction of the fluid. At the same time, the drainage groove has the first port and the second port, and the groove of the drainage groove is enlarged, which is beneficial to the rapid docking of the drainage groove with the second interface or the third interface. At the same time, it is convenient to adjust the opening of the second interface and / or the third interface, and then control the flow at the second interface and / or the third interface, which is beneficial to reduce the introduction of parts such as flow regulating valves, and can also simplify the structure of the thermal management system and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of an embodiment of a three-way valve of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the valve core from the first perspective;

[0031] Figure 3 It is a structural schematic diagram of the valve core from a second perspective;

[0032] Figure 4 for Figure 1 A cross-sectional view of the middle three-way valve, with the first interface and the third interface connected;

[0033] Figure 5 for Figure 1 A cross-sectional view of the middle three-way valve, wherein the first interface is connected to the second interface and the third interface;

[0034] Figure 6 for Figure 5 A cross-sectional view of the middle three-way valve, and adjusting the opening of the second interface;

[0035] Figure 7 for Figure 1 A cross-sectional view of the three-way valve in FIG. 1 , wherein the first interface and the second interface are connected.

[0036] Description of Figure Numbers:

[0037]

[0038]

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The invention provides a three-way valve.

[0045] Reference Figures 1 to 7 In an embodiment of the present invention, the three-way valve includes a valve body 10, a valve core 20 and a drive assembly 40. The valve body 10 is provided with a valve cavity, and the outer wall of the valve body 10 is provided with a first interface 11, a second interface 12 and a third interface 13 connected to the valve cavity; the valve core 20 is rotatably arranged in the valve cavity, and the valve core 20 has a rotation axis. The outer wall of the valve core 20 is provided with a first opening 21, a second opening 23 and a drainage groove 22, and the drainage groove 22 has a first port 221 and a second port 222. The interior of the valve core 20 is provided with a channel 24 connecting the first opening 21, the second opening 23 and the drainage groove 22, the first opening 21 is connected to the first interface 11, and the first opening 21 and the first interface 11 are located on the rotation axis;

[0046] Wherein, the three-way valve has a first working mode, a second working mode and a third working mode;

[0047] In the first working mode, the first port 221 is connected to the second interface 12, and the third interface 13 is misaligned with the second port 222 and the second opening 23;

[0048] In the second working mode, the first port 221 is connected to the third interface 13, and the second interface 12 is misaligned with the second port 222 and the second opening 23;

[0049] In the third working mode, the second port 222 is connected to the second interface 12, the second opening 23 is connected to the third interface 13, and the opening of the second interface 12 and / or the third interface 13 is adjustable with the rotation of the valve core 20. In this way, the flow direction of the fluid can be controlled, and at the same time, the flow rate of the fluid can be adjusted, thereby reducing the introduction of parts such as flow control valves, simplifying the structure of the thermal management system, and reducing costs.

[0050] The outer wall of the valve core 20 is provided with a first opening 21, a second opening 23 and a drainage groove 22. The first opening 21, the second opening 23 and the drainage groove 22 are relatively independent on the outer wall, and can be connected through the channel 24 inside the valve core 20. Furthermore, with the cooperation of the valve core 20 and the valve body 10, the three-way valve can switch between the first working mode, the second working mode and the third working mode, thereby realizing relative independence and reliable switching of each flow path and realizing control of the flow direction of the fluid.

[0051] Among them, the drainage groove 22 has a first port 221 and a second port 222. It can be understood that the first port 221 and the second port 222 are connected, and since the first opening 21 is located on the rotation axis, the drainage groove 22 can extend around the rotation axis and along the outer wall of the valve core 20, which is convenient for expanding the slot size of the drainage groove 22 and the connection with the channel 24, thereby facilitating the rapid docking of the drainage groove 22 with the second interface 12 or the second interface 12, and the convenience of flow regulation at the second interface 12 or the third interface 13.

[0052] Specifically, in the first working mode, if Figure 7 As shown, the first port 221 is connected to the second interface 12. Since the first opening 21 is connected to the first interface 11, and the third interface 13 is staggered with the second port 222 and the second opening 23, at this time, the first interface 11 and the second interface 12 can be connected, and the three-way valve has an inlet and an outlet; in the process of switching from the first working mode to the second mode, as the valve core 20 rotates, the first port 221 gradually staggers with the second interface 12, and the opening of the second interface 12 can be adjusted, thereby satisfying the control of the flow of the second interface 12; and when the first port 221 is staggered with the second interface 12, the second interface 12 is closed; the valve core 20 continues to rotate and switches to the second working mode, as shown in FIG. Figure 4 As shown, at this time, the first port 221 is connected to the third interface 13, the first interface 11 and the third interface 13 can be connected, and the three-way valve has an inlet and an outlet. Compared with the first working mode, the flow direction of the fluid is changed, which is convenient for meeting the connection requirements of various parts in the thermal management system.

[0053] In the third working mode, if Figures 5 to 6As shown, the first opening 21 is connected to the first interface 11, the second port 222 is connected to the second interface 12, and the second opening 23 is connected to the third interface 13. At this time, according to the specific connections between the components in the system, the three-way valve can have one outlet and two inlets, that is, the first interface 11 is configured as an outlet, or the three-way valve can have one inlet and two outlets, that is, the first interface 11 is configured as an inlet; and according to the opening requirements of the second interface 12 and the third interface 13, by rotating the valve core 20, the flow of the second interface 12 or the third interface 13 can be adjusted, and the flow of the second interface 12 and the third interface 13 can also be adjusted at the same time, so that the flow ratio of the fluid at the second interface 12 and the third interface 13 can be conveniently and accurately adjusted, and two-way, three-way or diversion according to a certain ratio can be realized, which meets the flow regulation and temperature regulation of the components connected to the second interface 12 and / or the third interface 13.

[0054] According to the technical solution of the present invention, the three-way valve can switch between the first working mode, the second working mode and the third working mode through the connected first opening 21, the second opening 23 and the drainage groove 22, so as to realize the switching of each flow path and the control of the flow direction of the fluid. At the same time, the drainage groove 22 has the first port 221 and the second port 222, and the notch of the drainage groove 22 is enlarged, which is conducive to the rapid docking of the drainage groove 22 with the second interface 12 or the third interface 13. At the same time, it is convenient to adjust the opening of the second interface 12 and / or the third interface 13, and then control the flow at the second interface 12 and / or the third interface 13, which is conducive to reducing the introduction of parts such as flow regulating valves, and can also simplify the structure of the thermal management system and reduce costs.

[0055] Reference Figures 2 to 3In one embodiment, the first port 221 is located between the second port 222 and the second opening 23, and the angle α between the axis of the first port 221 and the axis of the second port 222 satisfies: 0°<α≤90°. On the one hand, the size of the notch of the drainage groove 22 on the rotation path can be limited, so as to facilitate the adjustment of the opening of the second interface 12 or the third interface 13 in each working mode. On the other hand, it is convenient to control the rotation of the valve core 20 according to demand to realize the flow distribution of each interface. It can be understood that in the third working mode, that is, the first opening 21 is connected to the first interface 11, the drainage groove 22 is connected to the second interface 12, and the second opening 23 is connected to the third interface 13, the first port 221 is located between the second port 222 and the second opening 23. At this time, the first port 2 The direction from 21 to the second opening 23 is the positive direction, and the opposite direction is the negative direction. When the valve core 20 is rotated in the positive direction, the second interface 12 and the second port 222 are gradually staggered, and the third interface 13 and the second opening 23 are gradually staggered, so that the openings of the second interface 12 and the third interface 13 are changed at the same time, and the flow rates at the second interface 12 and the third interface 13 are reduced at the same time; when the valve core 20 is rotated in the negative direction, the second interface 12 is gradually switched from docking with the second port 222 to docking with the first port 221, and the third interface 13 and the second opening 23 are gradually staggered, so that the flow rate at the second interface 12 remains unchanged. At the same time, the opening rate of the third interface 13 is changed, and the flow rate at the third interface 13 is reduced; and continuing to rotate the valve core 20 in the negative direction will cause the first port 221 to be misaligned with the second interface 12, and the second opening 23 to be misaligned with the third interface 13.

[0056] Specifically, the angle α between the axis of the first port 221 and the axis of the second port 222 is limited to between 0° and 90°, and the first opening 21, the second opening 23 and the drainage groove 22 can be relatively independent on the outer wall while satisfying the control of the fluid flow direction and the regulation of the fluid flow rate, so as to ensure the relative independence of each flow path of the three-way valve in the first working mode, the second working mode and the third working mode. At the same time, it is beneficial to increase the life of the valve core 20 and reduce structural failures caused by fluid scouring.

[0057] Reference Figures 4 to 7 In one embodiment, the axis of the second opening 23 is perpendicular to the rotation axis, and the axis of the drainage groove 22 is perpendicular to the rotation axis, that is, the axes of the first port 221 and the second port 222 are perpendicular to the rotation axis, which is conducive to shortening the flow path of each flow path and improving the conduction efficiency. However, in other embodiments, the axis of the second opening 23 is set at an angle to the rotation axis, and the axis of the drainage groove 22 is set at an angle to the rotation axis, and the angle can be an acute angle or an obtuse angle.

[0058] Further, in one embodiment, the second opening 23 and the drainage groove 22 are located at the same height, and the second port 222 is arranged opposite to the second opening 23, that is, the axis of the second opening 23 and the axis of the second port 222 can be the same axis, which is convenient for processing. However, in other embodiments, the second opening 23 and the drainage groove 22 can be arranged at intervals along the rotation axis, or the axis of the second port 222 and the axis of the second opening 23 are arranged at an angle, and the angle is less than 180°.

[0059] Furthermore, in one embodiment, the axes of the first opening 21, the second opening 23 and the drainage groove 22 all pass through the center of the valve core 20, which is convenient for distributing the flow of each flow path. At the same time, it is also convenient to process the channel 24 and reduce the change of fluid flow rate caused by the sudden change of the channel 24.

[0060] Furthermore, in one embodiment, the valve core 20 is spherical, and the center is the spherical center, so that the distances from each flow path to the spherical core are equal, the pressure and flow rate of the fluid are improved, and the valve core 20 can be miniaturized, thereby reducing the volume of the three-way valve. However, in other embodiments, the valve core 20 can be hemispherical.

[0061] In another embodiment, the valve core 20 is cylindrical, and the first opening 21 is formed at the end of the valve core 20, and the second opening 23 and the drainage groove 22 are formed on the outer peripheral surface of the valve core 20. Such a configuration also facilitates sealing the gap between the valve core 20 and the valve body 10, thereby reliably separating the first interface 11, the second interface 12 and the third interface 13.

[0062] Reference Figures 4 to 7 In one embodiment, a seal 31 is provided between the valve core 20 and the valve body 10 to separate the first interface 11, the second interface 12 and the third interface 13. In addition, during the rotation of the valve core 20, the seal 31 always abuts against the outer wall of the valve core 20, which plays a good sealing role and effectively reduces the cross-flow of fluids in each flow path during the operation of the three-way valve, and the adverse effects on the movement of the valve core 20. Two seals 31 can be provided to seal the outer wall of the valve core 20 with the first interface 11, the second interface 12 and the third interface 13 respectively.

[0063] Furthermore, in one embodiment, at least one of the first interface 11, the second interface 12 and the third interface 13 is connected with a sealing valve cover. It can be understood that in order to facilitate the assembly of the valve core 20 into the valve body 10, the opening of at least one interface is equal to or slightly larger than the size of the valve core 20. When the valve core 20 is assembled to the valve cavity through the interface, the sealing valve cover is connected to the interface, and the end facing the valve core 20 is abutted against the outer wall of the valve core 20, thereby effectively ensuring the sealing of the valve core 20 and the first interface 11, the second interface 12 and the third interface 13, thereby reliably cutting off or connecting the fluid in each flow path.

[0064] Specifically, in one embodiment, the sealing valve cover includes the sealing member 31 and the end cover 32, the end cover 32 is connected to the valve body 10, one end of the sealing member 31 is connected to the end cover 32, and the other end is sealingly abutted against the outer surface of the valve core 20, wherein the sealing member 31 and the end cover 32 may be an integral injection molding structure, or may be an integral structure formed by methods such as embedding, clamping, bonding, etc., so as to facilitate the assembly of the sealing valve cover to the valve body 10 as a whole, simplify the assembly steps, and at the same time, prevent the sealing member 31 from detaching from the end cover 32 to cause the occurrence of assembly risks such as missing assembly, thereby improving the assembly reliability of the three-way valve, and improving the manufacturing performance and use reliability of the three-way valve.

[0065] Optionally, in one embodiment, the first opening 21 is configured as an inlet, and the second opening 23 and the drainage groove 22 are both configured as outlets. In this case, the three-way valve has one inlet and two outlets. By rotating the valve core 20, the opening of the second interface 12 and / or the third interface 13 can be controlled, and the flow rate ratio of the fluid at the second interface 12 and / or the third interface 13 can be adjusted, thereby effectively meeting the water supply needs of multiple flow paths and satisfying the temperature regulation and flow regulation of the components on each corresponding flow path.

[0066] Optionally, in one embodiment, the first opening 21 is configured as an outlet, and the second opening 23 and the drainage groove 22 are both configured as inlets. In this case, the three-way valve has one outlet and two inlets. By rotating the valve core 20, the opening of the second interface 12 and / or the third interface 13 can be controlled, and the flow rate of the fluid at the second interface 12 and / or the third interface 13 can be proportionally adjusted, thereby effectively controlling the water outlet flow of the three-way valve to meet the temperature regulation and flow regulation of the components on the flow path connected to the first opening 21.

[0067] Reference Figures 1 to 7In one embodiment, the three-way valve further comprises a driving assembly 40, wherein the driving assembly 40 is connected to the valve core 20 to drive the valve core 20 to rotate in the valve cavity, wherein, since the first opening 21 is always connected to the first interface 11, and the first opening 21 is located on the rotation axis, the connection point between the driving assembly 40 and the valve core 20 is also located on the rotation axis, and the valve core 20 can rotate around the rotation axis in the valve cavity by the driving action of the driving assembly 40 on the valve core 20, and then, by changing the position of the second opening 23 and the drainage groove 22 in the valve cavity, the connection between the first interface 11 and the second interface 12 and the third interface 13 can be reliably switched.

[0068] Specifically, in one embodiment, the driving assembly 40 has a valve stem 41, the valve body 10 is provided with an insertion hole 14, the valve core 20 is provided with a transmission groove 25, the valve stem 41 passes through the insertion hole 14 and is engaged with the transmission groove 25. It can be understood that the driving assembly 40 is located near the insertion hole 14, and the free end of the valve stem 41 passes through the insertion hole 14 and is engaged in the transmission groove 25, which has a compact structure and efficient transmission; when the driving assembly 40 rotates the valve stem 41, the valve stem 41 drives the valve core 20 to rotate, thereby changing the position of the second opening 23 and the drainage groove 22 in the valve cavity, switching the communication between the first interface 11 and the second interface 12 and the third interface 13, and achieving the function of cutting off or connecting the fluid in the channel 24. However, in other embodiments, part of the valve core 20 passes through the insertion hole 14 and is in transmission connection with the external driving assembly 40.

[0069] The present invention also proposes a thermal management system, which includes a three-way valve. The specific structure of the three-way valve refers to the above embodiment. Since the thermal management system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here. In the field of new energy vehicle technology, the coolant circuit is regulated and controlled by the thermal management system, thereby reducing the risk of thermal runaway of the battery in the car and improving driving comfort and safety.

[0070] The present invention also proposes a new energy vehicle, which includes a thermal management system. The specific structure of the thermal management system refers to the above-mentioned embodiment. Since the new energy vehicle adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0071] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A three-way valve, characterized in that: include: A valve body, wherein a valve cavity is provided inside, and an outer wall of the valve body is provided with a first interface, a second interface and a third interface communicating with the valve cavity; A valve core is rotatably disposed in the valve cavity, the valve core has a rotation axis, the outer wall of the valve core is provided with a first opening, a second opening and a drainage groove, the drainage groove has a first port and a second port, the interior of the valve core is provided with a channel connecting the first opening, the second opening and the drainage groove, the first opening is connected to the first interface, and the first opening and the first interface are located on the rotation axis; Wherein, the three-way valve has a first working mode, a second working mode and a third working mode; In the first working mode, the first port is connected to the second interface, and the third interface is misaligned with the second port and the second opening; In the second working mode, the first port is connected to the third interface, and the second interface is misaligned with the second port and the second opening; In the third working mode, the second port is connected to the second interface, the second opening is connected to the third interface, and the opening of the second interface and / or the third interface is adjustable as the valve core rotates.

2. The three-way valve according to claim 1, characterized in that: The first port is located between the second port and the second opening, and an angle α between an axis of the first port and an axis of the second port satisfies: 0°<α≤90°.

3. The three-way valve according to claim 2, characterized in that: The axis of the second opening is perpendicular to the rotation axis, and the axis of the drainage groove is perpendicular to the rotation axis.

4. The three-way valve according to claim 3, characterized in that: The second opening and the drainage groove are located at the same height, and the second port is arranged opposite to the second opening.

5. The three-way valve according to claim 4, characterized in that: The axes of the first opening, the second opening and the drainage groove all pass through the center of the valve core.

6. The three-way valve according to claim 5, characterized in that: The valve core is spherical, and the center is the spherical center.

7. The three-way valve according to claim 5, characterized in that: The valve core is cylindrical, the first opening is formed at an end of the valve core, and the second opening and the drainage groove are formed on an outer peripheral surface of the valve core.

8. The three-way valve according to claim 1, characterized in that: A sealing member is provided between the valve core and the valve body to isolate the first interface, the second interface and the third interface.

9. The three-way valve according to claim 8, characterized in that: At least one of the first interface, the second interface and the third interface is connected to a sealing valve cover.

10. The three-way valve according to claim 9, characterized in that: The sealing valve cover comprises the sealing member and an end cover, wherein the end cover is connected to the valve body, one end of the sealing member is connected to the end cover, and the other end is in sealing contact with the outer surface of the valve core.

11. The three-way valve according to any one of claims 1 to 10, characterized in that: The first opening is configured as an inlet, and the second opening and the drainage groove are both configured as outlets.

12. The three-way valve according to any one of claims 1 to 10, characterized in that: The first opening is configured as an outlet, and the second opening and the drainage groove are both configured as inlets.

13. The three-way valve according to claim 1, characterized in that: The three-way valve further comprises a driving assembly, wherein the driving assembly is connected to the valve core to drive the valve core to rotate in the valve cavity.

14. The three-way valve according to claim 13, characterized in that: The driving component comprises a valve stem, the valve body is provided with an insertion hole, the valve core is provided with a transmission groove, the valve stem passes through the insertion hole and is engaged with the transmission groove.

15. A thermal management system, characterized in that: It comprises a three-way valve as claimed in any one of claims 1 to 14.

16. A new energy vehicle, characterized in that: Comprising the thermal management system of claim 15.

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