Multi-way valve for refrigerant, heat management system and vehicle

Abstract

The utility model relates to a multi-way valve for refrigerants, a heat management system and a vehicle. The multi-way valve comprises a valve body and a valve element. The valve element is rotatably connected to the valve body, and a valve port is formed in the valve body; the valve ports comprise the first valve port, the second valve port, the third valve port and the fourth valve port, and the valve element is arranged in the mode that the first valve port can be selectively communicated with the second valve port and the third valve port, and the fourth valve port can be selectively communicated with the third valve port. Or the fourth valve port and the second valve port are cut off. The multi-way valve is of an integrated design, can replace a plurality of stop valve structures, and can be conveniently assembled, connected and adjusted and matched, so that the manufacturing cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of thermal management technology, and in particular to a multi-way valve for refrigerant, a thermal management system and a vehicle. Background Art

[0002] In the thermal management system of a vehicle with a heat pump system in the related art, if it is necessary to switch between cooling and heating, multiple stop valves need to be set up for coordination to adjust the flow direction of the refrigerant, resulting in more parts and components of the thermal management system and higher costs. Utility Model Content

[0003] In order to overcome the problems existing in the related art, according to one aspect of the present disclosure, the present disclosure provides a multi-way valve for refrigerant, comprising a valve body and a valve core;

[0004] The valve core is rotatably connected to the valve body, and the valve body is provided with a valve port;

[0005] The valve ports include a first valve port, a second valve port, a third valve port and a fourth valve port, and the valve core is configured to selectively connect the first valve port with the second valve port and the third valve port, and selectively connect the fourth valve port with the third valve port, or cut off the fourth valve port from the second valve port;

[0006] The multi-way valve includes a first state and a second state. In the first state, the first valve port is connected to the second valve port, and the third valve port is connected to the fourth valve port. In the second state, the first valve port is connected to the third valve port, and the fourth valve port and the second valve port are cut off.

[0007] The first valve port is located between the second valve port and the third valve port, and the second valve port and the third valve port are located between the first valve port and the fourth valve port, respectively.

[0008] Optionally, a straight-line distance between the second valve port and the third valve port and the first valve port respectively is smaller than a straight-line distance between the second valve port and the third valve port and the fourth valve port respectively.

[0009] Optionally, the center line of the first valve port, the center line of the second valve port, the center line of the third valve port and the center line of the fourth valve port intersect at one point;

[0010] A first angle is formed between the center line of the first valve port and the center line of the second valve port, a second angle is formed between the center line of the first valve port and the center line of the third valve port, a third angle is formed between the center line of the second valve port and the center line of the fourth valve port, and a fourth angle is formed between the center line of the third valve port and the center line of the fourth valve port;

[0011] The first angle is equal to the second angle, and the first angle and the second angle are smaller than the third angle or the fourth angle.

[0012] Optionally, the first angle and the second angle are 40°-80°; the third angle and the fourth angle are 100°-140°.

[0013] Optionally, the valve core is provided with a first flow guiding channel and a second flow guiding channel;

[0014] The first flow guide channel has a first port and a second port, the first port can be selectively communicated with the first valve port and the second valve port, and the second port can be selectively communicated with the first valve port and the third valve port;

[0015] The second flow guiding channel has a third port and a fourth port. The third port can be selectively connected to or disconnected from the third valve port, and the fourth port can be selectively connected to or disconnected from the fourth valve port.

[0016] Optionally, the valve body is constructed as a shell, a valve cavity is arranged in the valve body, the valve core is rotatably connected in the valve cavity, the valve port is opened on the side wall of the valve body and communicates with the valve cavity, the valve core is constructed as a spherical type, a cylindrical type or a disc type, and the first guide channel and the second guide channel are constructed as channels passing through the valve core.

[0017] Optionally, the valve body is configured as a first disk body, the valve core is configured as a second disk body, the first disk body and the second disk body are stacked along the axial direction, the valve port is configured as an opening passing through the first disk body, and the first guide channel and the second guide channel are configured as grooves opened on a side of the second disk body facing the first disk body.

[0018] A second aspect of the present disclosure further provides a thermal management system, comprising the above-mentioned multi-way valve for refrigerant.

[0019] Optionally, the thermal management system further includes a compressor, an indoor condenser, an outdoor condenser, a gas-liquid separator and an evaporator;

[0020] The indoor condenser has a first port and a second port, and the outdoor condenser has a third port and a fourth port;

[0021] The outlet of the compressor is connected to the first valve port of the multi-way valve, the second valve port of the multi-way valve is connected to the first port of the indoor condenser, the third valve port of the multi-way valve is connected to the third port of the outdoor condenser, the fourth valve port of the multi-way valve is connected to the inlet of the gas-liquid separator or the inlet of the compressor, the outlet of the gas-liquid separator is connected to the inlet of the compressor, and the second port of the indoor condenser is connected to the fourth port of the outdoor condenser;

[0022] The inlet of the evaporator is connected to the fourth port of the outdoor condenser, and the outlet of the evaporator is connected to the inlet of the gas-liquid separator.

[0023] The third aspect of the present disclosure also mentions a vehicle, comprising the above-mentioned multi-way valve for refrigerant, or the above-mentioned thermal management system.

[0024] In the above technical solution, the first valve port can be selectively connected with the second valve port and the third valve port, so that the first valve port and the second valve port can be connected, or the first valve port and the third valve port can be connected. At the same time, the fourth valve port can be changed to be connected with the third valve port, or the fourth valve port and the second valve port can be cut off, thereby realizing the switching of cooling and heating in the constructed thermal management system. The multi-way valve is of integrated design and can replace multiple stop valve structures. It can be convenient for assembly connection, adjustment and matching, thereby reducing manufacturing costs. In addition, after the valve core of the multi-way valve is rotated, the fourth valve port and the second valve port can be completely blocked, thereby achieving complete cutoff, solving the problem that the existing stop valve cannot be completely cut off in the reverse direction. At the same time, the valve core can maintain the same position after rotation, and does not require continuous power supply, thereby reducing energy consumption.

[0025] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0027] Figure 1 is a schematic diagram of the internal structure of a multi-way valve in a first state according to an embodiment of the present disclosure;

[0028] Figure 2 is a schematic diagram of the internal structure of a multi-way valve in a second state according to an embodiment of the present disclosure;

[0029] Figure 3 is a three-dimensional schematic diagram of a multi-way valve from one perspective of an embodiment of the present disclosure;

[0030] Figure 4is a three-dimensional schematic diagram of a multi-way valve in another perspective of an embodiment of the present disclosure;

[0031] Figure 5 is a three-dimensional schematic diagram of a multi-way valve according to another embodiment of the present disclosure;

[0032] Figure 6 It is a three-dimensional schematic diagram of a valve core according to another embodiment of the present disclosure.

[0033] Description of Reference Numerals

[0034] 1. Valve body, 2. First valve port, 3. Second valve port, 4. Third valve port, 5. Fourth valve port, 6. Valve core, 7. First angle, 8. Second angle, 9. Third angle, 10. Fourth angle, 11. First flow guide channel, 12. First port, 13. Second port, 14. Second flow guide channel, 15. Third port, 16. Fourth port. DETAILED DESCRIPTION

[0035] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0036] In the present disclosure, unless otherwise stated, directional words such as "upper, lower, left, right" are usually defined by the direction of the drawing, and "inner" and "outer" refer to the inside and outside of the relevant parts. In addition, the terms "first", "second", etc. are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0038] With the development of new energy vehicles, in order to improve the vehicle's endurance in winter, more and more vehicles are equipped with heat pump systems. The thermal management system with a heat pump system needs to switch between cooling and heating.

[0039] In the thermal management system of a vehicle with a heat pump system in the related art, if it is necessary to switch between cooling and heating, multiple stop valves need to be set up for coordination to adjust the flow direction of the refrigerant, resulting in more parts and higher costs for the thermal management system, which is also a difficult problem in the industry. In addition, the existing stop valves need to be continuously powered when they are turned on or off to ensure the state of the stop valve, which increases energy consumption.

[0040] For this reason, Figure 1-Figure 6 As shown, one aspect of the present disclosure provides a multi-way valve for refrigerant, comprising a valve body 1 and a valve core 6 .

[0041] The valve core 6 is rotatably connected to the valve body 1 , and the valve body 1 is provided with a valve port.

[0042] The valve ports include a first valve port 2, a second valve port 3, a third valve port 4 and a fourth valve port 5, and the valve core 6 is configured to selectively connect the first valve port 2 with the second valve port 3 and the third valve port 4, and to selectively connect the fourth valve port 5 with the third valve port 4, or to cut off the fourth valve port 5 and the second valve port 3.

[0043] The multi-way valve includes a first state and a second state. In the first state, the first valve port 2 is connected to the second valve port 3, and the third valve port 4 is connected to the fourth valve port 5. In the second state, the first valve port 2 is connected to the third valve port 4, and the fourth valve port 5 and the second valve port 3 are cut off.

[0044] Among them, the valve core 6 can rotate relative to the valve body 1, thereby changing the position relationship of the valve core 6 relative to the first valve port 2, the second valve port 3, the third valve port 4 and the fourth valve port 5, thereby changing the mutual connection or cut-off relationship of the first valve port 2, the second valve port 3, the third valve port 4 and the fourth valve port 5.

[0045] In the above technical solution, the first valve port 2 can be selectively connected with the second valve port 3 and the third valve port 4, so that the first valve port 2 and the second valve port 3 can be connected, or the first valve port 2 and the third valve port 4 can be connected. At the same time, the fourth valve port 5 can be changed to be connected with the third valve port 4, or the fourth valve port 5 and the second valve port 3 can be cut off, thereby realizing the switching of cooling and heating in the constructed thermal management system. The multi-way valve is of integrated design and can replace multiple stop valve structures. It can be convenient for assembly connection, adjustment and matching, thereby reducing manufacturing costs. In addition, after the valve core 6 of the multi-way valve is rotated, the fourth valve port 5 and the second valve port 3 can be completely blocked, thereby achieving complete cutoff, solving the problem that the existing stop valve cannot be completely cutoff in the reverse direction. At the same time, the valve core 6 can maintain the same position after rotation, and does not require continuous power supply, thereby reducing energy consumption.

[0046] Optionally, in an embodiment of the present disclosure, the valve port may further include a fifth valve port, a sixth valve port, etc., which may be further configured according to actual needs. At the same time, the valve core 6 may adjust the conduction relationship between the fifth valve port and the sixth valve port.

[0047] Optionally, in one embodiment of the present disclosure, the first valve port 2 is located between the second valve port 3 and the third valve port 4, and the second valve port 3 and the third valve port 4 are respectively located between the first valve port 2 and the fourth valve port 5. By such an arrangement, it is convenient to control the first valve port 2 to selectively communicate with the second valve port 3 and the third valve port 4. It can be understood that one side of the second valve port 3 and the third valve port 4 is close to the first valve port 2, and the other side of the second valve port 3 and the third valve port 4 is close to the fourth valve port 5.

[0048] Optionally, in one embodiment of the present disclosure, the straight-line distances between the second valve port 3 and the third valve port 4 and the first valve port 2 are smaller than the straight-line distances between the second valve port 3 and the third valve port 4 and the fourth valve port 5. In other words, the second valve port 3 and the third valve port 4 are closer to the first valve port 2 than the fourth valve port 5, so that the valve core 6 only needs to move in a small range to achieve the switching of the connection between the first valve port 2 and the second valve port 3 and the third valve port 4, which is more convenient to control and avoids interference with the fourth valve port 5. It should be noted that the straight-line distance referred to here can be the straight-line distance between the side of the second valve port 3 and the third valve port 4 close to the first valve port 2 and the first valve port 2, and the straight-line distance between the side of the second valve port 3 and the third valve port 4 close to the fourth valve port 5 and the fourth valve port 5.

[0049] like Figure 1 As shown, optionally, in one embodiment of the present disclosure, the center line of the first valve port 2, the center line of the second valve port 3, the center line of the third valve port 4 and the center line of the fourth valve port 5 intersect at one point. Among them, the first valve port 2, the second valve port 3, the third valve port 4 and the fourth valve port 5 are on the same radial plane, so that the center lines of the first valve port 2, the second valve port 3, the third valve port 4 and the fourth valve port 5 intersect at one point. Such an arrangement allows the valve core 6 to rotate around an axis, which can realize the switching of the interconnected relationship between the first valve port 2, the second valve port 3, the third valve port 4 and the fourth valve port 5, thereby controlling and driving by a servo motor, making the operation more convenient, and at the same time making it more convenient to manufacture the valve body 1, further reducing the manufacturing cost.

[0050] A first angle 7 is formed between the center line of the first valve port 2 and the center line of the second valve port 3, a second angle 8 is formed between the center line of the first valve port 2 and the center line of the third valve port 4, a third angle 9 is formed between the center line of the second valve port 3 and the center line of the fourth valve port 5, and a fourth angle 10 is formed between the center line of the third valve port 4 and the center line of the fourth valve port 5.

[0051] The angle of the first angle 7 is equal to the angle of the second angle 8, and the angle of the first angle 7 and the second angle 8 is smaller than the angle of the third angle 9 or the fourth angle 10. By making the angle of the first angle 7 and the second angle 8 equal, the rotation stroke of the valve core 6 can be kept consistent during the switching process of the connection between the first valve port 2 and the second valve port 3, and the connection between the first valve port 2 and the third valve port 4, and the control is easier. At the same time, the full conduction between the first valve port 2 and the second valve port 3, and the full conduction between the first valve port 2 and the third valve port 4 can be achieved to avoid misalignment. By making the angle of the first angle 7 and the second angle 8 smaller than the angle of the third angle 9 or the fourth angle 10, the second valve port 3 and the third valve port 4 are closer to the first valve port 2 than the fourth valve port 5 on a radial plane.

[0052] like Figure 1 As shown, optionally, in one embodiment of the present disclosure, the angles of the first angle 7 and the second angle 8 are 40°-80°; the angles of the third angle 9 and the fourth angle 10 are 100°-140°. By setting in this way, the first valve port 2, the second valve port 3 and the third valve port 4 will not be too close to avoid affecting the adjustment, and the second valve port 3, the third valve port 4 and the fourth valve port 5 are far away from each other to avoid interference. In some examples, the angle of the first angle 7 and the second angle 8 is 60°. The angle of the third angle 9 and the fourth angle 10 is 120°. Thus, the first valve port 2 and the fourth valve port 5 are arranged relative to each other, and the second valve port 3 and the third valve port 4 are arranged symmetrically with the center line of the first valve port 2. In this way, by rotating the valve core 6 by 60°, the first valve port 2 can be changed to be connected with the second valve port 3 or the third valve port 4, and when the valve core 6 is rotated by 60°, the third valve port 4 can be changed to be connected with the fourth valve port 5, or the second valve port 3 and the fourth valve port 5 can be blocked to be cut off.

[0053] Optionally, in an embodiment of the present disclosure, the valve core 6 is provided with a first guide channel 11 and a second guide channel 14 .

[0054] The first flow guide channel 11 has a first port 12 and a second port 13 . The first port 12 can selectively communicate with the first valve port 2 and the second valve port 3 . The second port 13 can selectively communicate with the first valve port 2 and the third valve port 4 .

[0055] The second flow guiding channel 14 has a third port 15 and a fourth port 16 . The third port 15 can be selectively connected to or disconnected from the third valve port 4 . The fourth port 16 can be selectively connected to or disconnected from the fourth valve port 5 .

[0056] The first guide channel 11 and the second guide channel 14 can facilitate switching of the communication relationship among the first valve port 2 , the second valve port 3 , the third valve port 4 and the fourth valve port 5 .

[0057] In the first state, the first port 12 faces the second valve port 3, so the first port 12 is connected to the second valve port 3, the second port 13 faces the first valve port 2, the second port 13 is connected to the first valve port 2, so the first valve port 2 is connected to the second valve port 3. In addition, the third port 15 faces the third valve port 4, the third port 15 is connected to the third valve port 4, the fourth port 16 faces the fourth valve port 5, the fourth port 16 is connected to the fourth valve port 5, so the third valve port 4 is connected to the fourth valve port 5.

[0058] In the second state, the first port 12 faces the first valve port 2, the first port 12 is communicated with the first valve port 2, the second port 13 faces the third valve port 4, the second port 13 is communicated with the third valve port 4, so that the first valve port 2 is communicated with the third valve port 4. In addition, the third port 15 and the fourth port 16 face the inner wall of the valve body 1 respectively, so that the second valve port 3 and the fourth valve port 5 are blocked by the valve core 6 to achieve cutoff.

[0059] Optionally, in one embodiment of the present disclosure, the valve body 1 is configured as a shell, a valve cavity is provided in the valve body 1, the valve core 6 is rotatably connected in the valve cavity, the valve port is provided in the side wall of the valve body 1 and communicates with the valve cavity, the valve core 6 is configured as a spherical, cylindrical or disc-shaped, and the first guide channel 11 and the second guide channel 14 are configured as channels passing through the valve core 6. By such a configuration, the valve core 6 can rotate in the valve body 1, and the valve body 1 can protect the valve core 6.

[0060] Among them, the first guide channel 11 and the second guide channel 14 are located in the valve core 6, that is, the first port 12, the second port 13, the third port 15 and the fourth port 16 are located on the side wall of the valve core 6, so that when the valve core 6 rotates, the positions of the first port 12, the second port 13, the third port 15 and the fourth port 16 can be changed to achieve coordination with the first valve port 2, the second valve port 3, the third valve port 4 and the fourth valve port 5.

[0061] In some examples, the valve core 6 is configured as a ball, and the first valve port 2, the second valve port 3, the third valve port 4, and the fourth valve port 5 may not be located in a radial plane, so that the valve core 6 can rotate in multiple directions. Of course, the first valve port 2, the second valve port 3, the third valve port 4, and the fourth valve port 5 may also be located in a radial plane, and the valve core 6 rotates along an axis perpendicular to the radial plane.

[0062] In other examples, the valve core 6 is constructed as a column type or a disk type, and the first valve port 2, the second valve port 3, the third valve port 4, and the fourth valve port 5 may be located in a radial plane. When the valve core 6 is a column type, its axis is perpendicular to the radial plane, so that the valve core 6 rotates around its own axis. When the valve core 6 is a disk type, it is parallel to the radial plane, and the valve core 6 rotates around its own axis.

[0063] like Figure 5 and Figure 6 As shown, optionally, in another embodiment of the present disclosure, the valve body 1 is configured as a first disk body, the valve core 6 is configured as a second disk body, the first disk body and the second disk body are stacked along the axial direction, the valve port is configured as an opening that penetrates the first disk body, and the first guide channel 11 and the second guide channel 14 are configured as grooves opened on a side of the second disk body facing the first disk body. By such an arrangement, the occupied volume of the multi-way valve can be reduced. After the first disk body and the second disk body are stacked, as the valve core 6 rotates, the first guide channel 11 and the second guide channel 14 can be connected to the opening on the stacked valve body 1, or the opening on the valve body 1 can be blocked by the second disk body.

[0064] In some examples, the first disk body may be located above the second disk body, and of course the opposite arrangement may also be possible. The diameters of the first disk body and the second disk body may be equal or unequal.

[0065] It is understandable that the second disk has two grooves on one side facing the first disk, and the notches of the two grooves can be covered by the first disk. When the opening on the first disk, that is, the valve port, is connected to the notches of the grooves, the refrigeration refrigerant can flow. Of course, it should be noted that other connection interfaces and other structures can be set on the first disk for connecting to external pipes, and a sealing structure can also be set, and no excessive restrictions are imposed here.

[0066] A second aspect of the present disclosure further provides a thermal management system, comprising the above-mentioned multi-way valve for refrigerant.

[0067] Optionally, in one embodiment of the present disclosure, the thermal management system further includes a compressor, an indoor condenser, an outdoor condenser and a gas-liquid separator.

[0068] The indoor condenser has a first port and a second port, and the outdoor condenser has a third port and a fourth port.

[0069] The outlet of the compressor is connected to the first valve port 2 of the multi-way valve, the second valve port 3 of the multi-way valve is connected to the first port of the indoor condenser, the third valve port 4 of the multi-way valve is connected to the third port of the outdoor condenser, the fourth valve port 5 of the multi-way valve is connected to the inlet of the gas-liquid separator or the inlet of the compressor, the outlet of the gas-liquid separator is connected to the inlet of the compressor, and the second port of the indoor condenser is connected to the fourth port of the outdoor condenser.

[0070] Among them, when the multi-way valve is in the first state, the first valve port 2 is connected to the second valve port 3, and the third valve port 4 is connected to the fourth valve port 5. At this time, the thermal management system is in heating mode, the outlet of the compressor is connected to the first port of the indoor condenser, the second port of the indoor condenser is connected to the fourth port of the outdoor condenser, and the third port of the outdoor condenser is connected to the inlet of the gas-liquid separator or the inlet of the compressor through the multi-way valve.

[0071] When the multi-way valve is in the second state, the first valve port 2 is connected to the third valve port 4, and the second valve port 3 is closed to the fourth valve port 5. At this time, the thermal management system is in the cooling mode, the outlet of the compressor is connected to the third port of the outdoor condenser, the second port of the indoor condenser is connected to the fourth port of the outdoor condenser, and the third port of the outdoor condenser is connected to the inlet of the gas-liquid separator or the inlet of the compressor through the multi-way valve. It can be understood that in the cooling mode, the indoor condenser is not used.

[0072] Optionally, in one embodiment of the present disclosure, the thermal management system further comprises an evaporator, the inlet of the evaporator is connected to the fourth port of the outdoor condenser, and the outlet of the evaporator is connected to the inlet of the gas-liquid separator. The evaporator can evaporate and absorb heat, so that refrigeration can be achieved. It should be noted that this time only briefly mentions the components related to the multi-way valve connection, and no excessive restrictions are imposed on other components in the thermal management system and other functions implemented.

[0073] A third aspect of the present disclosure also provides a vehicle, comprising the above-mentioned multi-way valve for refrigerant, or the above-mentioned thermal management system.

[0074] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0075] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0076] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A multi-way valve for refrigerant, characterized in that: Including valve body and valve core; The valve core is rotatably connected to the valve body, and the valve body is provided with a valve port; The valve ports include a first valve port, a second valve port, a third valve port and a fourth valve port, and the valve core is configured to selectively connect the first valve port with the second valve port and the third valve port, and selectively connect the fourth valve port with the third valve port, or cut off the fourth valve port from the second valve port; The multi-way valve includes a first state and a second state. In the first state, the first valve port is connected to the second valve port, and the third valve port is connected to the fourth valve port. In the second state, the first valve port is connected to the third valve port, and the fourth valve port and the second valve port are cut off.

2. The multi-way valve for refrigerant according to claim 1, characterized in that: The first valve port is located between the second valve port and the third valve port, and the second valve port and the third valve port are located between the first valve port and the fourth valve port, respectively.

3. The multi-way valve for refrigerant according to claim 2, characterized in that: The straight-line distances between the second valve port and the third valve port and the first valve port are smaller than the straight-line distances between the second valve port and the third valve port and the fourth valve port.

4. The multi-way valve for refrigerant according to claim 1, characterized in that: The center line of the first valve port, the center line of the second valve port, the center line of the third valve port, and the center line of the fourth valve port intersect at one point; A first angle is formed between the center line of the first valve port and the center line of the second valve port, a second angle is formed between the center line of the first valve port and the center line of the third valve port, a third angle is formed between the center line of the second valve port and the center line of the fourth valve port, and a fourth angle is formed between the center line of the third valve port and the center line of the fourth valve port; The first angle is equal to the second angle, and the first angle and the second angle are smaller than the third angle or the fourth angle.

5. The multi-way valve for refrigerant according to claim 4, characterized in that: The angle between the first angle and the second angle is 40°-80°; the angle between the third angle and the fourth angle is 100°-140°.

6. The multi-way valve for refrigerant according to claim 1, characterized in that: The valve core is provided with a first flow guiding channel and a second flow guiding channel; The first flow guide channel has a first port and a second port, the first port can be selectively communicated with the first valve port and the second valve port, and the second port can be selectively communicated with the first valve port and the third valve port; The second flow guiding channel has a third port and a fourth port. The third port can be selectively connected to or disconnected from the third valve port, and the fourth port can be selectively connected to or disconnected from the fourth valve port.

7. The multi-way valve for refrigerant according to claim 6, characterized in that: The valve body is constructed as a shell, a valve cavity is arranged in the valve body, the valve core is rotatably connected in the valve cavity, the valve port is opened on the side wall of the valve body and communicates with the valve cavity, the valve core is constructed as a spherical type, a columnar type or a disc type, and the first guide channel and the second guide channel are constructed as channels penetrating the valve core.

8. The multi-way valve for refrigerant according to claim 6, characterized in that: The valve body is configured as a first disk body, the valve core is configured as a second disk body, the first disk body and the second disk body are stacked along the axial direction, the valve port is configured as an opening penetrating the first disk body, and the first guide channel and the second guide channel are configured as grooves opened on a side of the second disk body facing the first disk body.

9. A thermal management system, characterized in that: It comprises a multi-way valve for refrigerant as claimed in any one of claims 1 to 8.

10. The thermal management system according to claim 9, characterized in that: The thermal management system also includes a compressor, an indoor condenser, an outdoor condenser, a gas-liquid separator and an evaporator; The indoor condenser has a first port and a second port, and the outdoor condenser has a third port and a fourth port; The outlet of the compressor is connected to the first valve port of the multi-way valve, the second valve port of the multi-way valve is connected to the first port of the indoor condenser, the third valve port of the multi-way valve is connected to the third port of the outdoor condenser, the fourth valve port of the multi-way valve is connected to the inlet of the gas-liquid separator or the inlet of the compressor, the outlet of the gas-liquid separator is connected to the inlet of the compressor, and the second port of the indoor condenser is connected to the fourth port of the outdoor condenser; The inlet of the evaporator is connected to the fourth port of the outdoor condenser, and the outlet of the evaporator is connected to the inlet of the gas-liquid separator.

11. A vehicle, characterized in that: It comprises a multi-way valve for refrigerant as claimed in any one of claims 1 to 8, or a thermal management system as claimed in claim 9 or 10.

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