Valve device and thermal management system

Abstract

The utility model discloses a valve device and a heat management system, the valve device comprises a valve core assembly, the valve device is provided with a valve cavity, the valve core assembly can rotate in the valve cavity, the valve core assembly is provided with a flow channel, the flow channel is provided with a first port and a second port, and the second port is communicated with the valve cavity; the valve device further comprises a valve body, the valve body is provided with a first channel, a second channel, a third channel and a fourth channel, the first channel communicates with the first opening, and the valve element assembly can adjust the communicating area of the second opening and the second channel and the communicating area of the second opening and the third channel. The valve element assembly can adjust the communication area of the second opening and the valve cavity, and the fourth channel communicates with the valve cavity. The valve device comprises a first adjusting state, and in the first adjusting state, the second opening communicates with the second channel, and the second opening communicates with the third channel; by means of the arrangement, the two outlet channels of the valve device can meet the flow requirement.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, specifically to a vehicle valve device and thermal management system. Background Technology

[0002] The valve device includes a three-way valve with one inlet and two outlets. The three-way valve can control the two outlet channels for proportional adjustment. However, when the two outlet channels are proportionally adjusted, only one outlet channel may meet the flow requirements. Therefore, it is necessary to design a valve device that can make both outlet channels of the valve device meet the flow requirements. Summary of the Invention

[0003] The purpose of this application is to provide a valve device that facilitates both outlet channels of the valve device to meet flow requirements.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] A valve device includes a valve core assembly, the valve device having a valve cavity, the valve core assembly being rotatable within the valve cavity, the valve core assembly having a flow channel having a first port and a second port, the second port communicating with the valve cavity; the valve device further includes a valve body having a first channel, a second channel, a third channel, and a fourth channel, the first channel communicating with the first port, the valve core assembly being adjustable in the communication area between the second port and the second channel, the valve core assembly being adjustable in the communication area between the second port and the third channel, the valve core assembly being adjustable in the communication area between the second port and the valve cavity, and the fourth channel communicating with the valve cavity; the valve device includes a first adjustment state, in which the second port is communicating with the second channel, and the second port is communicating with the third channel.

[0006] In one technical solution provided in this application, a valve device includes a valve body having a first channel, a second channel, a third channel, and a fourth channel. The first channel is connected to a first port. A valve core assembly can adjust the communication area between the second port and the second channel, and the valve core assembly can adjust the communication area between the second port and the third channel. The fourth channel is connected to a valve cavity. The valve device includes a first adjustment state, in which the second port is connected to the second channel, and the second port is connected to the third channel. With this configuration, the valve core assembly can adjust the total flow rate distributed between the second and third channels, and the valve core assembly can also adjust the communication area between the second port and the valve cavity, thereby changing the total flow rate distributed between the second and third channels, which is beneficial for both the second and third channels to meet the flow rate requirements.

[0007] A thermal management system includes a valve device comprising a valve core assembly, the valve device having a valve cavity, the valve core assembly being rotatable within the valve cavity, the valve core assembly having a flow channel having a first port and a second port, the second port communicating with the valve cavity; the valve device further includes a valve body having a first channel, a second channel, a third channel, and a fourth channel, the first channel communicating with the first port, the valve core assembly being adjustable in terms of the communication area between the second port and the second channel, the communication area between the second port and the third channel, and the communication area between the second port and the valve cavity, the fourth channel communicating with the valve cavity. The valve device includes a first adjustment state, in which the second port is connected to the second channel and the second port is connected to the third channel; the thermal management system further includes a compressor, a first heat exchanger, a second heat exchanger, and a third heat exchanger, wherein the inlet of the first heat exchanger is connected to the outlet of the compressor, the first channel is connected to the outlet of the first heat exchanger, the outlet of the first heat exchanger can be connected to the fourth channel, the second channel is connected to the inlet of the second heat exchanger, the third channel is connected to the inlet of the third heat exchanger, the outlet of the second heat exchanger is connected to the inlet of the compressor, and the outlet of the third heat exchanger is connected to the inlet of the compressor.

[0008] In one technical solution provided in this application, a thermal management system includes a valve device, a compressor, a first heat exchanger, a second heat exchanger, and a third heat exchanger. The valve device includes a valve body with a first channel, a second channel, a third channel, and a fourth channel. The first channel is connected to a first port. A valve core assembly can adjust the communication area between the second port and the second channel, and the second port can also adjust the communication area between the second port and the third channel. The fourth channel is connected to a valve cavity. The valve device includes a first adjustment state, in which the second port is connected to the second channel, and the second port is connected to the third channel. The inlet of the first heat exchanger is connected to the compressor's... The outlet is connected to the outlet of the first heat exchanger, the outlet of the first heat exchanger is connected to the fourth channel, the second channel is connected to the inlet of the second heat exchanger, the third channel is connected to the inlet of the third heat exchanger, the outlet of the second heat exchanger is connected to the inlet of the compressor, and the outlet of the third heat exchanger is connected to the inlet of the compressor. With this configuration, the valve core assembly can adjust the total flow rate distributed between the second and third channels, and the valve core assembly can also adjust the communication area between the second port and the valve chamber, thereby changing the total flow rate distributed between the second and third heat exchangers, which is beneficial for both the second and third heat exchangers to meet the flow rate requirements. Attached Figure Description

[0009] Figure 1 This is a three-dimensional structural schematic diagram of the valve device provided in this application;

[0010] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure along the AA direction;

[0011] Figure 3 This is a front view structural schematic diagram of the valve device provided in this application;

[0012] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure along the BB direction;

[0013] Figure 5 yes Figure 3 A schematic diagram of the cross-sectional structure in the CC direction;

[0014] Figure 6 This is an exploded magnified schematic diagram of the valve ball and valve shaft;

[0015] Figure 7 This is a schematic diagram of the thermal management system.

[0016] Figure label:

[0017] 1. Valve body; 2. Drive assembly; 3. Valve core assembly;

[0018] 10. Valve chamber; 11. First channel; 12. Second channel; 13. Third channel; 14. Fourth channel; 15. Fifth channel; 16. First sealing ring; 17. Second sealing ring; 18. Third sealing ring;

[0019] 30. Flow channel; 31. First port; 32. Second port; 33. Valve ball; 330. Valve ball bore; 34. Valve shaft; 340. Inner cavity; 341. Side hole;

[0020] 60. Compressor; 61. First heat exchanger; 62. Second heat exchanger; 63. Third heat exchanger; 64. Fourth heat exchanger; 65. Fifth heat exchanger; 66. Flow valve; 67. Gas-liquid separator;

[0021] 100. Valve device;

[0022] 200. Thermal management system;

[0023] 321. Flow channel opening; 322. Throttling groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] Combination Figures 1 to 5The diagram illustrates one embodiment of a valve device 100. In this embodiment, the valve device 100 includes a valve body 1, a drive assembly 2, and a valve core assembly 3. The valve device 100 has a valve cavity 10, and the drive assembly 2 can drive the valve core assembly 3 to rotate within the valve cavity 10. The valve core assembly 3 has a flow channel 30, which has a first port 31 and a second port 32, with the second port 32 communicating with the valve cavity 10. The valve device 100 also includes the valve body 1, which has a first channel 11, a second channel 12, a third channel 13, and a fourth channel 14. The first channel 11 communicates with the first port 31, and the valve core assembly 3 can adjust the communication area between the second port 32 and the second channel 12, and the valve core assembly 3 can adjust the communication area between the second port 32 and the third channel 13. The fourth channel 14 communicates with the valve cavity 10. The valve device 100 includes a first adjustment state. In the first adjustment state, the second port 32 is connected to the second channel 12 and the second port 32 is connected to the third channel 13. During the operation of the valve device 100, fluid or gas medium is introduced into the first channel 11 and the fourth channel 14 and distributed to the second channel 12 and the third channel 13. In this embodiment, the first channel 11 and the fourth channel 14 are supplied with a cold medium. With this configuration, the valve core assembly 3 can adjust the total flow rate of the cold medium distributed in the second channel 12 and the third channel 13. The valve core assembly 3 can also adjust the communication area between the second port 32 and the valve cavity 10. This allows for proportional adjustment and distribution of the flow rate of the cold medium introduced into the second channel 12 and the third channel 13, which is beneficial for meeting the flow requirements of the second channel 12 and the third channel 13 respectively.

[0026] Furthermore, in combination Figure 2 As shown, the valve device 100 also includes a flow valve 66, which can regulate the total flow rate of the refrigerant in the fourth channel 14. Specifically, the flow valve 66 is an electronic expansion valve. With this configuration, after the valve core assembly 3 has proportionally regulated and distributed the flow rate of the refrigerant entering the second channel 12 and the third channel 13, the flow valve 66 regulates the total flow rate of the refrigerant distributed in the second channel 12 and the third channel 13, which is beneficial to meet the flow requirements of the second channel 12 and the third channel 13 respectively.

[0027] Combination Figures 4 to 6The valve core assembly 3 includes a valve ball 33 and a valve shaft 34. The drive assembly 2 is fixedly or limitedly connected to the valve shaft 34. The valve ball 33 has a valve ball hole 330, and the valve shaft 34 is sleeved in the valve ball hole 330. Specifically, the outer wall of the valve shaft 34 is interference-fitted with the wall forming the valve ball hole 330, and the outer wall of the valve shaft 34 is sealed to the wall forming the valve cavity 10. The valve shaft 34 has an inner cavity 340. A first port 31 is located at one axial end of the valve shaft 34 and communicates with the inner cavity 340. The side wall of the valve shaft 34 has a side hole 341 that communicates with the inner cavity 340. A second port 32 is located in the valve ball 33, radially along the rotation direction of the valve ball 33, and penetrates the valve ball 33. The side hole 341 communicates with the second port 32. The valve ball 33 can... The valve chamber 10 rotates within the valve. The second channel 12, the third channel 13, and the fourth channel 14 are circumferentially spaced around the rotation axis of the valve ball 33. The axis of the first channel 11 is approximately parallel to the rotation axis of the valve ball 33. The valve ball 33 can adjust the communication area between the second port 32 and the second channel 12, and the valve ball 33 can adjust the communication area between the second port 32 and the third channel 13. Specifically, the flow channel 30 is L-shaped, and the axis of the first channel 11 coincides with the rotation axis of the valve ball 33. With this arrangement, the first channel 11 and the fourth channel 14 are separated, and the valve device 100 can increase the flow rate of the cold medium without increasing the diameter of the first channel 11, thereby simultaneously meeting the flow requirements of the second channel 12 and the third channel 13.

[0028] Combination Figure 2 , Figure 4 and Figure 5 The valve device 100 further includes a first sealing ring 16 and a second sealing ring 17. The first sealing ring 16 surrounds the second channel 12 and presses against the wall forming the valve cavity 10 and the valve ball 33. The second sealing ring 17 surrounds the third channel 13 and presses against the wall forming the valve cavity 10 and the valve ball 33. The valve ball 33 can abut against the first sealing ring 16 to seal, thereby closing the second channel 12; the valve ball 33 can abut against the second sealing ring 17 to seal, thereby closing the third channel 13. Specifically, when the valve device 100 is in the initial state, the second port 32 and the second... Channel 12 is connected, and valve ball 33 closes the third channel 13. As valve ball 33 rotates in valve cavity 10, second port 32 connects to second channel 12 and third channel 13. As valve ball 33 continues to rotate in valve cavity 10, second port 32 connects to third channel 13, and valve ball 33 closes the second channel. With this configuration, when both second channel 12 and third channel 13 are connected to second port 32, as valve ball 33 rotates, second port 32 can distribute the amount of refrigerant entering the second channel 12 and third channel 13 in different proportions, thereby simultaneously meeting the refrigerant requirements of the second channel 12 and third channel 13.

[0029] Combination Figure 5 Along the radial direction of the valve ball 33, the maximum length of the second port 32 is greater than the inner diameter of the first sealing ring 16, and the maximum length of the second port 32 is greater than the inner diameter of the second sealing ring 17. With this configuration, when the second port 32 is connected to the second channel 12, the second port 32 is always connected to the valve cavity 10 regardless of the angle of the maximum length direction of the second port 32, thereby increasing the maximum cold medium flow rate of the second channel 12. With this configuration, when the second port 32 is connected to the third channel 13, the second port 32 is always connected to the valve cavity 10 regardless of the angle of the maximum length direction of the second port 32, thereby increasing the maximum fluid medium flow rate of the third channel 13.

[0030] Furthermore, in combination Figures 3 to 5 The maximum length direction of the second port 32 is approximately perpendicular to the rotation axis of the valve ball 33. The first sealing ring 16 and the second sealing ring 17 are spaced apart. Along the maximum length direction of the second port 32, the maximum length of the second port 32 is greater than the distance between the first sealing ring 16 and the second sealing ring 17. When the valve device 100 is in the first adjustment state, the gap between the first sealing ring 16 and the second sealing ring 17 is connected to the second port 32. With this configuration, when both the second channel 12 and the third channel 13 are connected to the second port 32, the cold medium flows from the fourth channel 14 through the gap between the first sealing ring 16 and the second sealing ring 17 into the second port 32, thereby distributing the cold medium to the second channel 12 and the third channel 13.

[0031] Furthermore, combining Figures 4 to 6 The second port 32 includes a flow channel 321 and a throttling groove 322. Along the maximum length direction of the second port 32, the throttling groove 322 extends radially outward along the flow channel 321. The flow channel 321 is a circular hole that radially penetrates the valve ball 33 along the rotation direction of the valve ball 33. The throttling groove 322 is a strip-shaped groove, and its length direction is tangent to the rotation direction of the valve ball 33. In this embodiment, two throttling grooves 322 are symmetrically arranged along the rotation axis of the valve ball 33. In other embodiments, there may be one or more throttling grooves 322. With this arrangement, when both the second channel 12 and the third channel 13 are connected to the second port 32, during the rotation of the valve ball 33, the cold medium flows from the fourth channel 14 through the gap between the first sealing ring 16 and the second sealing ring 17 into the flow channel 321. The communication area between the valve cavity 10 and the second port 32 is stable, which helps to ensure the stability of the flow rate of the fluid medium from the valve cavity 10 into the second port 32.

[0032] Furthermore, combining Figure 5 and Figure 6The direction of the flow channel 321 is pointed towards the throttling groove 322, and the depth of the throttling groove 322 is reduced. With this setting, during the rotation of the valve ball 33, the change in the communication area between the second port 32 and the second channel 12 or the third channel 13 within a small range is more gradual, which makes it easier to control the small flow rate changes of the cold medium.

[0033] Combination Figure 2 , Figure 4 and Figure 5 Specifically, the inner diameter of the first sealing ring 16 is the same as the inner diameter of the second sealing ring 17, and the maximum distance between the two throttling grooves 322 located on both sides of the flow channel 321 is greater than the inner diameter of the first sealing ring 16. With this configuration, when the second port 32 is connected to the second channel 12 and / or the second port 32 is connected to the third channel 13, no matter how the valve ball 33 rotates, the throttling groove 322 is always connected to the valve cavity 10, that is, the second port 32 is always connected to the valve cavity 10, that is, the cold medium can always flow from the fourth channel 14 through the valve cavity 10 and into the second port 32.

[0034] Combination Figure 2 , Figure 4 and Figure 5 The valve body 1 also has a fifth channel 15, which is circumferentially spaced between the third channel 13 and the fourth channel 14 around the rotation axis of the valve ball 33. The valve device 100 includes a third sealing ring 18, which surrounds the fifth channel 15 and presses against the wall forming the valve cavity 10 and the valve ball 33. The valve ball 33 can abut against the third sealing ring 18 to seal, thereby closing the fifth channel 15. The valve device 100 also includes a second adjustment state. In the second adjustment state, the second port 32 is connected to the third channel 13 and the fifth channel 15. With this configuration, the second port 32 can distribute the fluid medium flow of the third channel 13 and the fifth channel 15 in different proportions, thereby simultaneously meeting the fluid medium requirements of the third channel 13 and the fifth channel 15.

[0035] Furthermore, in combination Figure 2 , Figure 4 and Figure 5 Along the radial direction of the valve ball 33, the inner diameter of the third sealing ring 18 is the same as the inner diameter of the first sealing ring 16, and the maximum length of the second port 32 is greater than the inner diameter of the third sealing ring 18. With this configuration, when the second port 32 is connected to the fifth channel 15, the second port 32 is always connected to the valve cavity 10 regardless of the angle of the maximum length direction of the second port 32, thereby increasing the maximum fluid medium flow rate of the fifth channel 15.

[0036] Furthermore, combining Figure 2 , Figure 4 and Figure 5The second sealing ring 17 and the third sealing ring 18 are circumferentially spaced apart. Along the maximum length direction of the second port 32, the maximum length of the second port 32 is greater than the circumferential distance between the second sealing ring 17 and the third sealing ring 18. In the second adjustment state, the circumferential distance between the second sealing ring 17 and the third sealing ring 18 is connected to the second port 32. With this configuration, when both the third channel 13 and the fifth channel 15 are connected to the second port 32, the communication area between the valve cavity 10 and the second port 32 is stable during the rotation of the valve ball 33, which helps to ensure the stable flow rate of the fluid medium from the valve cavity 10 into the second port 32.

[0037] A thermal management system, combined with Figures 1-7 Including the valve device 100 described above, the thermal management system 200 also includes a compressor 60, a first heat exchanger 61, a second heat exchanger 62, and a third heat exchanger 63. The inlet of the first heat exchanger 61 is connected to the outlet of the compressor 60, a first channel 11 is connected to the outlet of the first heat exchanger 61, the outlet of the first heat exchanger 61 can be connected to a fourth channel 14, a second channel 12 is connected to the inlet of the second heat exchanger 62, a third channel 13 is connected to the inlet of the third heat exchanger 63, and the outlet of the second heat exchanger 62 is connected to the inlet of the compressor 60. The outlet of heat exchanger 63 is connected to the inlet of compressor 60. With this configuration, when the first heat exchanger 61 is working, the valve shaft 34 and valve ball 33 are driven to rotate by the drive assembly 2. The communication area between the second port 32 and the second channel 12 and the communication area between the second port 32 and the third channel 13 are changed proportionally. At the same time, the communication area between the second port 32 and the valve cavity 10 is changed. The flow rate of the cold medium flowing from the fourth channel 14 through the valve cavity 10 into the second port 32 is changed until the valve device 100 simultaneously meets the cold medium requirements of the second heat exchanger 62 and the third heat exchanger 63.

[0038] Furthermore, in combination Figures 1-7 A flow valve 66 is installed between the outlet of the first heat exchanger 61 and the fourth channel 14. The inlet of the flow valve 66 is directly connected to the outlet of the first heat exchanger 61, and the outlet of the flow valve 66 is directly connected to the fourth channel 14. With this configuration, when the first heat exchanger 61 is operating, the refrigerant exiting the outlet of the first heat exchanger 61 is a low-pressure gas-liquid mixture. When the total amount of refrigerant required by the second heat exchanger 62 and the third heat exchanger 63 is greater than the total amount of refrigerant supplied through the first channel 11, the flow valve 66 is used to adjust the flow. The flow rate of the cold medium in the fourth channel 14 is adjusted until the total amount of cold medium flowing into the first port 31 and the second port 32 is consistent with the total amount of cold medium required by the second heat exchanger 62 and the third heat exchanger 63. The valve shaft 34 and the valve ball 33 are driven to rotate by the drive assembly 2. The communication area between the second port 32 and the second channel 12 and the communication area between the second port 32 and the third channel 13 are changed proportionally until the valve device 100 simultaneously meets the cold medium requirements of the second heat exchanger 62 and the third heat exchanger 63.

[0039] In addition, the first heat exchanger 61 may not be working, and the cold medium introduced into the fourth channel 14 is in a high gaseous state and at a high pressure. The high-pressure gaseous cold medium flushes and cleans impurities in the valve device 100, making it easier to maintain the valve device 100.

[0040] Furthermore, in combination Figure 4 , Figure 5 and Figure 7 The thermal management system 200 also includes a fifth heat exchanger 65. The fifth channel 15 is connected to the inlet of the fifth heat exchanger 65, and the outlet of the fifth heat exchanger 65 is connected to the inlet of the compressor 60. With this configuration, when the total amount of refrigerant required by the third heat exchanger 63 and the fifth heat exchanger 65 is greater than the total amount of refrigerant flowing into the first channel 11, the flow rate of the refrigerant flowing into the fourth channel 14 is adjusted by the flow valve 66 until the total amount of refrigerant flowing into the first port 31 and the second port 32 is consistent with the total amount of refrigerant required by the third heat exchanger 63 and the fifth heat exchanger 65. The valve ball 33 is driven to rotate by the drive assembly 2, and the connection area between the second port 32 and the third channel 13 and the connection area between the second port 32 and the fifth channel 15 are changed proportionally until the valve device 100 simultaneously meets the refrigerant requirements of the third heat exchanger 63 and the fifth heat exchanger 65.

[0041] Furthermore, in combination Figure 7 A fourth heat exchanger 64 is provided between the outlet of the first channel 11 and the outlet of the first heat exchanger 61. The outlet of the fourth heat exchanger 64 is directly connected to the first channel 11, and the inlet of the fourth heat exchanger 64 is directly connected to the outlet of the first heat exchanger 61. The inlet of the flow valve 66 is directly connected to the outlet of the first heat exchanger 61. With this configuration, the first heat exchanger 61 and the fourth heat exchanger 64 can work simultaneously, and the refrigerant introduced into the first channel 11 is further liquefied, which can improve the refrigeration efficiency of the valve device 100.

[0042] In addition, the first heat exchanger 61 may not work, while the fourth heat exchanger 64 works. The cold medium passing through the first channel 11 has a higher degree of liquefaction, while the cold medium passing through the fourth channel 14 has a higher degree of gaseousness and pressure. The valve device 100 can work normally. When the valve device 100 needs maintenance, the fourth channel 14 can be opened briefly, and the high-pressure gaseous cold medium flushes and cleans the impurities in the valve device 100, allowing the valve device 100 to be maintained without shutting down.

[0043] Furthermore, combining Figure 7A gas-liquid separator 67 is provided between the outlet of the fifth heat exchanger 64 and the compressor 60. The outlet of the fifth heat exchanger 64 is directly connected to the inlet of the gas-liquid separator 67, and the outlet of the gas-liquid separator 67 is directly connected to the inlet of the compressor 60. This arrangement can reduce the amount of liquid refrigerant entering the compressor 60 and reduce the risk of the compressor 60 being damaged by the impact of liquid refrigerant.

[0044] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features of the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this description.

[0045] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the present invention.

Claims

1. A valve device, characterized in that, The valve device (100) includes a valve core assembly (3), the valve device (100) has a valve cavity (10), the valve core assembly (3) is rotatable within the valve cavity (10), the valve core assembly (3) has a flow channel (30), the flow channel (30) has a first port (31) and a second port (32), the second port (32) is in communication with the valve cavity (10); The valve device (100) further includes a valve body (1), which has a first channel (11), a second channel (12), a third channel (13) and a fourth channel (14). The first channel (11) is connected to the first port (31). The valve core assembly (3) is capable of adjusting the communication area between the second port (32) and the second channel (12). The valve core assembly (3) is capable of adjusting the communication area between the second port (32) and the third channel (13). The valve core assembly (3) is capable of adjusting the communication area between the second port (32) and the valve cavity (10). The fourth channel (14) is connected to the valve cavity (10). The valve device (100) includes a first adjustment state, in which the second port (32) is connected to the second channel (12) and the second port (32) is connected to the third channel (13).

2. The valve device according to claim 1, characterized in that, The valve core assembly (3) includes a valve ball (33), the second port (32) is located in the valve ball (33), the valve ball (33) is rotatable in the valve cavity (10), the second channel (12), the third channel (13) and the fourth channel (14) are circumferentially spaced around the rotation axis of the valve ball (33), and the axis of the first channel (11) is approximately parallel to the rotation axis of the valve ball (33); The valve ball (33) can adjust the communication area between the second port (32) and the second channel (12), and the valve ball (33) can adjust the communication area between the second port (32) and the third channel (13).

3. The valve device according to claim 2, characterized in that, The valve device (100) further includes a first sealing ring (16) and a second sealing ring (17). The first sealing ring (16) surrounds the second channel (12) and abuts against the wall forming the valve cavity (10) and the valve ball (33). The second sealing ring (17) surrounds the third channel (13) and abuts against the wall forming the valve cavity (10) and the valve ball (33). Along the radial direction of the valve ball (33), the maximum length of the second opening (32) is greater than the inner diameter of the first sealing ring (16) and the maximum length of the second opening (32) is greater than the inner diameter of the second sealing ring (17).

4. The valve device according to claim 3, characterized in that, The maximum length direction of the second port (32) is approximately perpendicular to the rotation axis of the valve ball (33). The first sealing ring (16) and the second sealing ring (17) are spaced apart. Along the maximum length direction of the second port (32), the maximum length of the second port (32) is greater than the distance between the first sealing ring (16) and the second sealing ring (17). In the first adjustment state, the circumferential distance between the first sealing ring (16) and the second sealing ring (17) is connected to the second port (32).

5. The valve device according to claim 4, characterized in that, The second port (32) includes a flow channel (321) and a throttling groove (322). Along the maximum length direction of the second port (32), the throttling groove (322) extends radially outward along the flow channel (321).

6. The valve device according to claim 5, characterized in that, The depth of the throttling groove (322) decreases from the direction of the flow channel opening (321) toward the throttling groove (322).

7. The valve device according to claim 5 or 6, characterized in that, At least two throttling grooves (322) are provided, and the throttling grooves (322) are symmetrically arranged along the rotation axis of the valve ball (33).

8. The valve device according to any one of claims 3-6, characterized in that, The valve body (1) also has a fifth channel (15) about the rotation axis of the valve ball (33). The fifth channel (15) is circumferentially disposed between the third channel (13) and the fourth channel (14). The valve device (100) includes a third sealing ring (18). The third sealing ring (18) surrounds the fifth channel (15). The third sealing ring (18) abuts against the wall forming the valve cavity (10) and the valve ball (33). Along the radial direction of the valve ball (33), the maximum length of the second port (32) is greater than the inner diameter of the third sealing ring (18). The valve device (100) further includes a second adjustment state, in which the second port (32) is connected to the third channel (13) and the second port (32) is connected to the fifth channel (15).

9. The valve device according to claim 7, characterized in that, The valve body (1) also has a fifth channel (15) about the rotation axis of the valve ball (33). The fifth channel (15) is circumferentially disposed between the third channel (13) and the fourth channel (14). The valve device (100) includes a third sealing ring (18). The third sealing ring (18) surrounds the fifth channel (15). The third sealing ring (18) abuts against the wall forming the valve cavity (10) and the valve ball (33). Along the radial direction of the valve ball (33), the maximum length of the second port (32) is greater than the inner diameter of the third sealing ring (18). The valve device (100) further includes a second adjustment state, in which the second port (32) is connected to the third channel (13) and the second port (32) is connected to the fifth channel (15).

10. The valve device according to claim 8, characterized in that, The maximum length direction of the second port (32) is approximately perpendicular to the rotation axis of the valve ball (33). The second sealing ring (17) and the third sealing ring (18) are circumferentially spaced apart. Along the maximum length direction of the second port (32), the maximum length of the second port (32) is greater than the distance between the second sealing ring (17) and the third sealing ring (18). In the second adjustment state, the circumferential distance between the second sealing ring (17) and the third sealing ring (18) is connected to the second port (32).

11. The valve device according to claim 9, characterized in that, The maximum length direction of the second port (32) is approximately perpendicular to the rotation axis of the valve ball (33). The second sealing ring (17) and the third sealing ring (18) are circumferentially spaced apart. Along the maximum length direction of the second port (32), the maximum length of the second port (32) is greater than the distance between the second sealing ring (17) and the third sealing ring (18). In the second adjustment state, the circumferential distance between the second sealing ring (17) and the third sealing ring (18) is connected to the second port (32).

12. The valve device according to claim 1, 2, 3, 4, 5, 6, 9, 10, or 11, characterized in that, The valve device (100) further includes a flow valve (66) capable of regulating the flow rate of the fourth channel (14).

13. The valve device according to claim 7, characterized in that, The valve device (100) further includes a flow valve (66) capable of regulating the flow rate of the fourth channel (14).

14. The valve device according to claim 8, characterized in that, The valve device (100) further includes a flow valve (66) capable of regulating the flow rate of the fourth channel (14).

15. A thermal management system, characterized in that, The device includes a valve assembly (100), which includes a valve core assembly (3), the valve assembly (100) having a valve cavity (10), the valve core assembly (3) being rotatable within the valve cavity (10), the valve core assembly (3) having a flow channel (30), the flow channel (30) having a first port (31) and a second port (32), the second port (32) being in communication with the valve cavity (10); The valve device (100) further includes a valve body (1), which has a first channel (11), a second channel (12), a third channel (13) and a fourth channel (14). The first channel (11) is connected to the first port (31). The valve core assembly (3) is capable of adjusting the communication area between the second port (32) and the second channel (12). The valve core assembly (3) is capable of adjusting the communication area between the second port (32) and the third channel (13). The valve core assembly (3) is capable of adjusting the communication area between the second port (32) and the valve cavity (10). The fourth channel (14) is connected to the valve cavity (10). The valve device (100) includes a first adjustment state. In the first adjustment state, the second port (32) is connected to the second channel (12) and the second port (32) is connected to the third channel (13). The thermal management system (200) further includes a compressor (60), a first heat exchanger (61), a second heat exchanger (62), and a third heat exchanger (63). The inlet of the first heat exchanger (61) is connected to the outlet of the compressor (60). The first channel (11) is connected to the outlet of the first heat exchanger (61). The outlet of the first heat exchanger (61) can be connected to the fourth channel (14). The second channel (12) is connected to the inlet of the second heat exchanger (62). The third channel (13) is connected to the inlet of the third heat exchanger (63). The outlet of the second heat exchanger (62) is connected to the inlet of the compressor (60). The outlet of the third heat exchanger (63) is connected to the inlet of the compressor (60).

16. The thermal management system according to claim 15, characterized in that, The valve device (100) further includes a flow valve (66), which can regulate the flow rate of the fourth channel (14). The inlet of the flow valve (66) is directly connected to the outlet of the first heat exchanger (61), and the outlet of the flow valve (66) is directly connected to the fourth channel (14).

17. The thermal management system according to claim 16, characterized in that, A fourth heat exchanger (64) is provided between the first channel (11) and the outlet of the first heat exchanger (61). The outlet of the fourth heat exchanger (64) is directly connected to the first channel (11), the inlet of the fourth heat exchanger (64) is directly connected to the outlet of the first heat exchanger (61), and the inlet of the flow valve (66) is directly connected to the outlet of the first heat exchanger (61).

18. The thermal management system according to any one of claims 15-17, characterized in that, The valve device (100) includes a valve body (1), the valve body (1) further having a fifth channel (15), the valve core assembly (3) includes a valve ball (33), the fifth channel (15) is circumferentially disposed between the third channel (13) and the fourth channel (14) about the rotation axis of the valve ball (33), the valve device (100) includes a third sealing ring (18), the third sealing ring (18) surrounds the fifth channel (15), the third sealing ring (18) abuts against the wall forming the valve cavity (10) and the valve ball (33), the valve device (100) further includes a second adjustment state, in which the second port (32) is connected to the third channel (13) and the fifth channel (15); The thermal management system (200) further includes a fifth heat exchanger (65), the fifth channel (15) is connected to the inlet of the fifth heat exchanger (65), and the outlet of the fifth heat exchanger (65) is connected to the inlet of the compressor (60).

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