Cooling liquid control valve and thermal management system

Abstract

The utility model provides a coolant control valve and thermal management system, coolant control valve includes valve body, valve core and first sealing element, the valve body has the accommodation groove and is equipped with a plurality of cavity that is used for medium circulation along the circumference of valve body at interval, each cavity includes first inlet and first outlet, and the first inlet and the first outlet are equipped with second inlet and second outlet respectively, and the first inlet and the second outlet are equipped with second inlet and second outlet respectively. The first outlet is communicated with the accommodating groove, and the first inlet is communicated with the outside; the valve element comprises a plurality of communicating runners which are not communicated with one another, and the valve element is rotatably arranged in the containing groove so as to control the different cavities to be communicated through the communicating runners to change the flowing direction of media. The first sealing piece is arranged between the valve element and the side wall of the containing groove, and an avoiding opening is formed in the position, corresponding to the first outlet, of the first sealing piece. According to the cooling liquid control valve, the valve element and the valve body are arranged, so that medium circulation modes of various flow paths are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a coolant control valve and a thermal management system. Background Art

[0002] The thermal management system of new energy vehicles includes a battery thermal management system and a motor electronic control thermal management system. The temperature has an important impact on the efficiency of battery discharge. At low temperatures, the battery discharge depth is shallow, and long-term operation at low temperatures will shorten the battery life. Therefore, in order to ensure the effective charging and discharging of the battery pack, it is necessary to heat or cool the battery pack by arranging a thermal management system; a lot of heat will be generated during the operation of the motor, which will increase the temperature of the motor, affect the output power of the motor, reduce the power, and in severe cases will cause the motor to stop, so the motor needs to be cooled. In other operations of the thermal management system of new energy vehicles, some components may also need to be heated.

[0003] The traditional control system for thermal management of batteries and motors of new energy vehicles relies on multiple electronic valves to control each medium flow channel in the thermal management system, and keep each channel in series or parallel, so that the thermal management system can realize its own separate flow loop or adjust to form a flow loop. The traditional thermal management system involves multiple electronic valves, which are complex and expensive in structure, and the medium flow channels are complex. Utility Model Content

[0004] Aiming at the problem of complex medium flow channels in existing thermal management systems, the utility model provides a coolant control valve and a thermal management system.

[0005] On the one hand, the utility model provides a coolant control valve, including a valve body, a valve core and a first sealing member, the valve body having a receiving groove and a plurality of chambers for medium circulation arranged at circumferential intervals along the valve body, each of the chambers comprising a first inlet and a first outlet, the first outlet being connected to the receiving groove, and the first inlet being connected to the outside; the valve core comprising a plurality of interconnected communication channels, the valve core being rotatably arranged in the receiving groove to control the change of the flow direction of the medium between different chambers through the communication channels; the first sealing member is arranged between the valve core and the side wall of the receiving groove, and the first sealing member is provided with an avoidance port corresponding to the first outlet.

[0006] Optionally, the multiple chambers for medium circulation are respectively the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber and the sixth chamber, the valve core includes three interconnected flow channels, and the valve core rotates relative to the valve body between a first position, a second position, a third position and a fourth position to control the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber and the sixth chamber to switch and connect in pairs.

[0007] Optionally, the valve core includes a first bottom plate, a second bottom plate and two partitions, the two partitions are connected between the first bottom plate and the second bottom plate, and the two partitions are spaced apart to form three interconnected flow channels; the two partitions have a first end and a second end, and the distance between the two partitions gradually increases from the first end to the second end; the contact surfaces of the first bottom plate, the second bottom plate and the partition and the first seal are interference fit.

[0008] Optionally, the first sealing member is arranged in a barrel shape, and an opening is arranged on the first sealing member, and the opening extends along the axial direction of the first sealing member; a protrusion facing the valve core is arranged on the side wall of the accommodating groove, and the protrusion is located in the opening.

[0009] Optionally, the first sealing member includes a supporting layer and a sealing layer, the sealing layer is sleeved on the outer periphery of the supporting layer, a plurality of reinforcing ribs are provided on a side of the supporting layer facing the sealing layer, the reinforcing ribs extend along the axial direction of the sealing layer, and at least one reinforcing rib is provided between every two adjacent avoidance openings.

[0010] Optionally, the coolant control valve further includes an actuator and a base, wherein the actuator is disposed on the base, and the actuator includes a motor, wherein the motor is connected to the valve core and is used to drive the valve core to rotate; a side of the base facing away from the actuator is welded to the valve body.

[0011] Optionally, a connecting piece is provided at one end of the valve core facing the actuator, a second sealing piece is provided at the periphery of the connecting piece, the second sealing piece is provided on a side of the base away from the actuator, and the connecting piece passes through the base to be connected to the motor.

[0012] Optionally, the coolant control valve also includes a flow channel plate, which is connected to a side of the valve body facing away from the valve core, and a plurality of medium flow channels are arranged in the flow channel plate, each of the medium flow channels includes a second inlet and a second outlet, the second outlet is connected to the first inlet in a one-to-one correspondence, and a quick-connect connector for connecting an external pipeline is arranged at the second inlet.

[0013] Optionally, a third sealing member is provided on a side of the valve body facing the flow channel plate, and a side of the third sealing member facing the flow channel plate is interference fit with the flow channel plate.

[0014] On the other hand, the utility model also provides a thermal management system, comprising any one of the coolant control valves described above.

[0015] In the utility model, the medium flows from the first inlet of the chamber and then flows from the first outlet to the connecting flow channel of the valve core, and then flows to other chambers on the valve body through the connecting flow channel, thereby realizing the medium control in the cooling circuit. By changing the position of the valve core, a specific chamber in the valve body is connected, and then the flow ratio of the medium in the chamber is adjusted. The valve body and the valve core in the utility model require less layout space and have good versatility. On the premise of meeting the medium flow rate, it can effectively play a role in reducing costs and improving distribution efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a coolant control valve provided by an embodiment of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of a coolant control valve provided by an embodiment of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a valve body of a coolant control valve provided by an embodiment of the utility model;

[0019] Figure 4 It is a bottom schematic diagram of a valve body of a coolant control valve provided by an embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of a valve core of a coolant control valve provided by an embodiment of the utility model;

[0021] Figure 6 This is a structural schematic diagram of a coolant control valve provided by an embodiment of the utility model, in which the valve core is located in a first position;

[0022] Figure 7 It is a structural schematic diagram of a coolant control valve provided by an embodiment of the utility model, in which the valve core is located in the second position;

[0023] Figure 8 It is a structural schematic diagram of a coolant control valve provided by an embodiment of the utility model, in which the valve core is located at a third position;

[0024] Fig. 9 It is a structural schematic diagram of a coolant control valve provided by an embodiment of the utility model, in which the valve core is located at a fourth position;

[0025] Fig.10 This is a structural schematic diagram of a first sealing member of a coolant control valve provided by an embodiment of the utility model;

[0026] Fig.11 It is a structural schematic diagram of a flow channel plate of a coolant control valve provided in one embodiment of the utility model.

[0027] The reference numerals in the drawings of the specification are as follows:

[0028] 1. valve body; 11. receiving groove; 12. chamber; 121. first inlet; 122. first outlet; 12a. first chamber; 12b. second chamber; 12c. third chamber; 12d. fourth chamber; 12e. fifth chamber; 12f. sixth chamber; 13. protrusion;

[0029] 2. valve core; 21. connecting flow channel; 21a. first flow channel; 21b. second flow channel; 21c. third flow channel; 22. first bottom plate; 23. second bottom plate; 24. partition plate; 25. connecting piece;

[0030] 3. first sealing member; 31. avoidance opening; 32. opening; 33. supporting layer; 331. reinforcing rib; 34. sealing layer;

[0031] 4. Actuator; 5. Base; 6. Second sealing member;

[0032] 7. Flow channel plate; 71. Medium flow channel; 72. Second outlet; 73. Quick-connect connector;

[0033] 8. The third seal. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] In order to illustrate the technical solution of the present utility model, specific embodiments are provided below for illustration.

[0036] On the one hand, if Figure 1-Figure 11As shown, a coolant control valve according to an embodiment of the utility model comprises a valve body 1, a valve core 2 and a first sealing member 3. The valve body 1 comprises a receiving groove 11 and a plurality of chambers 12 for medium circulation arranged at intervals along the circumference of the valve body 1. Each of the chambers 12 comprises a first inlet 121 and a first outlet 122. The first outlet 122 is connected to the receiving groove 11, and the first inlet 121 is connected to the outside. Specifically, the first inlet 121 is arranged at the bottom of the valve body 1. The valve core 2 comprises a plurality of interconnected flow channels 21, and the valve core 2 is rotatably arranged in the receiving groove 11 to control the communication between different chambers 12 through the connecting flow channels 21 to change the flow direction of the medium. The first sealing member 3 is arranged between the valve core 2 and the side wall of the receiving groove 11, and the first sealing member 3 is provided with an avoidance port 31 corresponding to the first outlet 122.

[0037] In the embodiment of the utility model, the medium flows from the first inlet 121 of the chamber 12 and then flows from the first outlet 122 to the connecting flow channel 21 of the valve core 2, and then flows to other chambers 12 on the valve body 1 through the connecting flow channel 21, thereby realizing the medium control in the cooling circuit. By changing the position of the valve core 2, a specific chamber 12 in the valve body 1 is connected, and then the flow ratio of the medium in the chamber 12 is adjusted. In the utility model, the valve body 1 and the valve core 2 have a small layout space requirement and good versatility. On the premise of meeting the medium flow rate, it can effectively play a role in reducing costs and improving distribution efficiency.

[0038] like Figure 3-Figure 9 As shown, in some embodiments of the utility model, a plurality of chambers 12 for medium circulation are respectively a first chamber 12a, a second chamber 12b, a third chamber 12c, a fourth chamber 12d, a fifth chamber 12e and a sixth chamber 12f, the valve core 2 includes three interconnected communication channels 21, the valve core 2 rotates relative to the valve body 1 between a first position, a second position, a third position and a fourth position to control the first chamber 12a, the second chamber 12b, the third chamber 12c, the fourth chamber 12d, the fifth chamber 12e and the sixth chamber 12f to switch and connect in pairs, and four different modes of medium flow are realized by the rotation of the valve core 2, thereby saving the volume of the valve body 1 and reducing the overall size of the valve body 1.

[0039] Further, in Figure 4 In the figure, viewed along the clockwise direction of the accommodating groove 11, the order of the six chambers 12 is the first chamber 12a, the fourth chamber 12d, the third chamber 12c, the sixth chamber 12f, the second chamber 12b, and the fifth chamber 12e, and the three connecting channels 21 are the first channel 21a, the second channel 21b and the third channel 21c, and the second channel 21b is located between the first channel 21a and the third channel 21c.

[0040] When the valve core 2 is in the first position relative to the valve body 1, the first chamber 12a and the sixth chamber 12f are connected through the second flow channel 21b, the second chamber 12b and the fifth chamber 12e are connected through the first flow channel 21a, and the third chamber 12c and the fourth chamber 12d are connected through the third flow channel 21c.

[0041] like Figure 7 As shown, when the valve core 2 is in the second position relative to the valve body 1, relative to the first position, the valve core 2 rotates 30° counterclockwise in the accommodating groove 11, the first chamber 12a and the fourth chamber 12d are connected through the third flow channel 21c, the second chamber 12b and the fifth chamber 12e are connected through the first flow channel 21a, and the third chamber 12c and the sixth chamber 12f are connected through the second flow channel 21b.

[0042] like Figure 8 As shown, when the valve core 2 is in the third position relative to the valve body 1, relative to the first position, the valve core 2 rotates 60° counterclockwise in the accommodating groove 11, the first chamber 12a and the fourth chamber 12d are connected through the third flow channel 21c, the second chamber 12b and the sixth chamber 12f are connected through the first flow channel 21a, and the third chamber 12c and the fifth chamber 12e are connected through the second flow channel 21b.

[0043] like Fig. 9 As shown, when the valve core 2 is in the fourth position relative to the valve body 1, relative to the first position, the valve core 2 rotates 90° counterclockwise in the accommodating groove 11, the first chamber 12a and the fifth chamber 12e are connected through the third flow channel 21c, the second chamber 12b and the sixth chamber 12f are connected through the first flow channel 21a, and the third chamber 12c and the fourth chamber 12d are connected through the second flow channel 21b.

[0044] like Figure 5 As shown, in one embodiment of the utility model, the valve core 2 includes a first bottom plate 22, a second bottom plate 23 and two partitions 24, the two partitions 24 are connected between the first bottom plate 22 and the second bottom plate 23, and the two partitions 24 are arranged at intervals to form three interconnected flow channels 21. The two partitions 24 have a first end and a second end, and the distance between the two partitions 24 gradually increases from the first end to the second end. Specifically, the two partitions 24 are arc-shaped plates, which are arranged in an eight-shaped shape. The contact surfaces of the first bottom plate 22, the second bottom plate 23 and the partition 24 and the first sealing member 3 are interference fit to ensure the sealing of the contact surfaces and prevent the cooling medium from flowing out.

[0045] like Fig.10As shown, in some embodiments of the utility model, the first sealing member 3 is provided in a barrel shape, and an opening 32 is provided on the first sealing member 3, and the opening 32 extends along the axial direction of the first sealing member 3. When the valve core 2 is pressed into the valve body 1, the first sealing member 3 is deformed by providing the opening 32 and the avoidance opening 31, so as to ensure the sealing between the valve core 2 and the valve body 1 and prevent internal leakage. A protrusion 13 facing the valve core 2 is provided on the side wall of the accommodating groove 11, and the protrusion 13 is located in the opening 32. By providing the protrusion 13, the installation of the first sealing member 3 is limited to ensure that the avoidance opening 31 corresponds to the first outlet 122 of the inner chamber 12 of the valve body 1.

[0046] like Fig.10 As shown, in some embodiments of the utility model, the first sealing member 3 includes a supporting layer 33 and a sealing layer 34, the sealing layer 34 is sleeved on the outer periphery of the supporting layer 33, a plurality of reinforcing ribs 331 are provided on one side of the supporting layer 33 facing the sealing layer 34, the reinforcing ribs 331 extend along the axial direction of the sealing layer 34, at least one reinforcing rib 331 is provided between every two adjacent avoidance openings 31, and the overall strength of the first sealing member 3 is ensured by providing the reinforcing ribs 331. Specifically, the supporting layer 33 is made of polytetrafluoroethylene (PTFE), and the sealing layer 34 is made of soft ethylene propylene diene monomer (EPDM).

[0047] like Figure 1 and Figure 2 As shown, in some embodiments of the utility model, the coolant control valve also includes an actuator 4 and a base 5, and the actuator 4 is arranged on the base 5. Specifically, the actuator 4 and the base 5 are fastened together by screws and bolts. The actuator 4 includes a motor (not shown in the figure), and the motor is connected to the valve core 2 to drive the valve core 2 to rotate. The side of the base 5 facing away from the actuator 4 is welded to the valve body 1 to ensure the coaxiality of the output shaft of the motor and the valve core 2. Furthermore, the actuator 4 also includes electrical components such as circuit boards related to the motor, which can realize the rotation of the motor output end to a specified angle under the input of the lin signal.

[0048] like Figure 5 As shown, in some embodiments of the utility model, a connecting member 25 is provided at one end of the valve core 2 facing the actuator 4, and a second sealing member 6 is provided on the outer periphery of the connecting member 25. The second sealing member 6 is arranged on the side of the base 5 away from the actuator 4, and the connecting member 25 passes through the base 5 to connect with the motor. Specifically, the outer periphery of the connecting member 25 is gear-shaped, and the connecting member 25 and the output end of the motor rotate coaxially through gear engagement. When the base 5 is welded to the end face of the valve body 1, the second sealing member 6 is compressed and deformed, thereby playing a sealing role.

[0049] like Fig.11 As shown, in some embodiments of the utility model, the coolant control valve further includes a flow channel plate 7, and the flow channel plate 7 is connected to a side of the valve body 1 away from the valve core 2. Specifically, the flow channel plate 7 is fastened to the valve body 1 by screws and bolts. A plurality of medium flow channels 71 are arranged in the flow channel plate 7, and each of the medium flow channels 71 includes a second inlet and a second outlet 72, and the second outlet 72 is connected to the first inlet 121 in a one-to-one correspondence, and a quick-connect connector 73 for connecting an external pipeline is arranged at the second inlet. Furthermore, the second inlet is arranged on the outer peripheral wall of the flow channel plate 7, and the quick-connect connector 73 is arranged in a ring around the outer periphery of the flow channel plate 7. The flow channel plate 7 is made of nylon and is integrally injection molded.

[0050] like Figure 2 As shown, in some embodiments of the present utility model, a third sealing member 8 is provided on one side of the valve body 1 facing the flow channel plate 7, and a side of the third sealing member 8 facing the flow channel plate 7 is interference fit with the flow channel plate 7 to ensure the sealing between the valve body 1 and the flow channel plate 7. Specifically, the third sealing member 8 is used to seal the outer edge of the first inlet 121 of each chamber 12.

[0051] On the other hand, an embodiment of the present invention further provides a thermal management system, comprising any one of the coolant control valves described above.

[0052] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the utility model, and should be included in the protection scope of the utility model.

Claims

1. A coolant control valve, characterized in that: It includes a valve body, a valve core and a first sealing member, the valve body has a receiving groove and a plurality of chambers for medium circulation arranged at intervals along the circumference of the valve body, each of the chambers includes a first inlet and a first outlet, the first outlet is connected to the receiving groove, and the first inlet is connected to the outside; the valve core includes a plurality of interconnected flow channels that are not connected to each other, the valve core is rotatably arranged in the receiving groove to control the change of the flow direction of the medium between different chambers through the connecting flow channels; the first sealing member is arranged between the valve core and the side wall of the receiving groove, and the first sealing member is provided with an avoidance port corresponding to the first outlet.

2. The coolant control valve according to claim 1, characterized in that: The multiple chambers for medium circulation are respectively the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber and the sixth chamber. The valve core includes three interconnected flow channels. The valve core rotates between the first position, the second position, the third position and the fourth position relative to the valve body to control the first chamber, the second chamber, the third chamber, the fourth chamber, the fifth chamber and the sixth chamber to switch and connect in pairs.

3. The coolant control valve according to claim 1, characterized in that: The valve core includes a first bottom plate, a second bottom plate and two partitions, the two partitions are connected between the first bottom plate and the second bottom plate, and the two partitions are spaced apart to form three interconnected flow channels; the two partitions have a first end and a second end, and the distance between the two partitions gradually increases from the first end to the second end; the contact surfaces of the first bottom plate, the second bottom plate and the partition and the first sealing member are interference fit.

4. The coolant control valve according to claim 1, characterized in that: The first sealing member is arranged in a barrel shape, and is provided with an opening, and the opening extends along the axial direction of the first sealing member; a protrusion facing the valve core is arranged on the side wall of the accommodating groove, and the protrusion is located in the opening.

5. The coolant control valve according to claim 4, characterized in that: The first sealing member includes a supporting layer and a sealing layer, wherein the sealing layer is sleeved on the outer periphery of the supporting layer, and a plurality of reinforcing ribs are arranged on a side of the supporting layer facing the sealing layer. The reinforcing ribs extend along the axial direction of the sealing layer, and at least one reinforcing rib is arranged between every two adjacent avoidance openings.

6. The coolant control valve according to claim 1, characterized in that: The coolant control valve further comprises an actuator and a base, wherein the actuator is arranged on the base, and the actuator comprises a motor, wherein the motor is connected to the valve core and is used to drive the valve core to rotate; A side of the base facing away from the actuator is welded to the valve body.

7. The coolant control valve according to claim 6, characterized in that: A connecting piece is arranged at one end of the valve core facing the actuator, a second sealing piece is arranged at the periphery of the connecting piece, the second sealing piece is arranged at a side of the base away from the actuator, and the connecting piece passes through the base to be connected to the motor.

8. The coolant control valve according to claim 1, characterized in that: The coolant control valve also includes a flow channel plate, which is connected to a side of the valve body facing away from the valve core. A plurality of medium flow channels are arranged in the flow channel plate, each of the medium flow channels includes a second inlet and a second outlet, the second outlet is connected to the first inlet in a one-to-one correspondence, and a quick-connect connector for connecting an external pipeline is arranged at the second inlet.

9. The coolant control valve according to claim 8, characterized in that: A third sealing member is disposed on a side of the valve body facing the flow channel plate, and a side of the third sealing member facing the flow channel plate is interference fit with the flow channel plate.

10. A thermal management system, characterized in that: A coolant control valve comprising the coolant control valve according to any one of claims 1 to 9.

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