An electric valve and thermal management system

Abstract

This application discloses an electric valve and a thermal management system. The electric valve includes a valve housing, a control component, and a valve core component. The valve housing includes an upper housing, a lower housing, a valve body, and a bottom housing that are fixedly connected. The upper housing, lower housing, valve body, and bottom housing are arranged along the height direction of the electric valve. The electric valve has a first chamber and a second chamber. The first chamber is located between the upper housing and the lower housing, and the second chamber is located between the valve body and the bottom housing. The bottom wall surface of the first chamber near the second chamber is defined as the first bottom wall surface, and the bottom wall surface of the second chamber near the first chamber is defined as the second bottom wall surface. Along the height direction of the electric valve, a portion of the second bottom wall surface is closer to the upper housing than a portion of the first bottom wall surface. The electric valve of this invention can compress the space in the height direction of the electric valve.

Description

Technical Field

[0001] This invention relates to the field of fluid control technology, and in particular to an electric valve and thermal management system. Background Technology

[0002] With increasing global energy consumption and environmental pressures, new energy vehicles have undoubtedly become a new trend in the future automotive industry, playing a significant role in protecting the Earth's environment, mitigating resource consumption, and improving the quality of human life. Electric valves, as important components of new energy vehicle air conditioning control systems and battery cooling and other thermal management systems, play a crucial role in controlling the flow and direction of media. With the growing demand for miniaturization, reducing the size of electric valves and achieving miniaturization is an urgent problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide an electric valve and a thermal management system, wherein the electric valve compresses the space in the height direction of the electric valve, which facilitates the miniaturization of the electric valve.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electric valve includes a valve housing, a control component, and a valve core component. The valve housing includes an upper housing, a lower housing, a valve body, and a bottom housing fixedly connected together. The upper housing, lower housing, valve body, and bottom housing are arranged along the height direction of the electric valve. The valve body is integrally formed with or fixedly connected to the lower housing. The upper housing is fixedly connected to the lower housing, and the bottom housing is fixedly connected to the valve body. At least a portion of the control component is sealed and installed between the upper housing and the lower housing. At least a portion of the valve core component is sealed and installed between the valve body and the bottom housing. The electric valve further includes a valve core component that is kinetically connected to the control component.

[0006] The electric valve has a first chamber and a second chamber. The first chamber is located between the upper housing and the lower housing, and the second chamber is located between the valve body and the bottom housing. The bottom wall surface of the first chamber near the second chamber is defined as the first bottom wall surface, and the bottom wall surface of the second chamber near the first chamber is defined as the second bottom wall surface. Along the height direction of the electric valve, a portion of the second bottom wall surface is closer to the upper housing than a portion of the first bottom wall surface.

[0007] The present invention also provides a thermal management system including an electric valve, wherein the control component includes a drive component capable of driving the valve core component to rotate, and the working medium in the thermal management system includes a coolant, wherein the coolant flowing in the electric valve is capable of heat exchange with the drive component.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] The electric valve provided in the above technical solution has a second bottom wall portion that is closer to the upper housing than the first bottom wall portion along the height direction of the electric valve. This causes the space portion of the first chamber and the space portion of the second chamber to overlap in the height direction of the electric valve. Compared to arranging the entire space of the first chamber and the entire space of the second chamber side by side in the height direction of the electric valve at different heights, the electric valve provided in this embodiment of the invention can compress the space in the height direction of the electric valve, which facilitates the miniaturization of the electric valve. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of an electric valve according to an embodiment of the present invention;

[0011] Figure 2 for Figure 1 The diagram shows the exploded structure of the electric valve.

[0012] Figure 3 for Figure 2 A three-dimensional structural diagram of the lower housing and valve body is shown.

[0013] Figure 4 for Figure 1 A side view of the electric valve shown.

[0014] Figure 5 for Figure 2 A three-dimensional structural schematic diagram of the control component shown;

[0015] Figure 6 for Figure 1 A three-dimensional structural schematic diagram of the upper shell shown;

[0016] Figure 7 for Figure 1 A cross-sectional view of the electric valve shown.

[0017] Figure 8 for Figure 7 An enlarged structural diagram of point A is shown;

[0018] Figure 9 This is a three-dimensional structural diagram of the first sealing element, the second sealing element, and the gasket in an embodiment of the present invention;

[0019] Figure 10 for Figure 2 The diagram shows a cross-sectional view of the lower housing and valve body.

[0020] Figure 11 for Figure 2 A three-dimensional structural diagram of the valve core component, the third seal, the elastic element, and the fourth seal is shown.

[0021] Figure 12 yes Figure 1 A cross-sectional view of the electric valve shown from another perspective.

[0022] Figure 13 This is a three-dimensional structural diagram of the control component, valve core ball, and valve body in an embodiment of the present invention.

[0023] Explanation of symbols in the attached drawings:

[0024] 1. Valve housing; 101-First chamber; 102-Second chamber; 11. Upper housing; 12. Lower housing; 13. Valve body; 131. Channel; 14. Bottom housing; 15. Bracket; 2. Control components; 21. Drive component; 22. Control board; 23. Transmission component; 231. Output shaft; 232. Gear; 3. Valve core component; 31. Valve core ball; 311. Conducting cavity; 4. First mounting part; 41. First sub-part; 42. Second sub-part; 5. Second mounting part; 51. Third sub-part; 52. Fourth sub-part; 61. First seal; 62. Second seal; 63. Gasket; 71. Third seal; 711. Groove; 72. Elastic element; 73. Fourth seal. Detailed Implementation

[0025] The present invention will now be described in more detail with reference to the accompanying drawings. It should be noted that the following description of the present invention with reference to the accompanying drawings is merely illustrative and not restrictive. Various different embodiments can be combined with each other to form other embodiments not shown in the following description.

[0026] Please see Figures 1-13 This invention provides an electric valve, including a valve housing 1, a control component 2, and a valve core component 3. The valve housing 1 includes an upper housing 11, a lower housing 12, a valve body 13, and a bottom housing 14 fixedly connected. The upper housing 11, lower housing 12, valve body 13, and bottom housing 14 are arranged along the height direction of the electric valve, as shown in the figure below. Figure 4 As shown, the "H" arrow points in the direction. The valve body 13 is integrally formed with or fixedly connected to the lower housing 12, and the upper housing 11 is fixedly connected to the lower housing 12. The electric valve has a first chamber 101 and a second chamber 102. The first chamber 101 is located between the upper housing 11 and the lower housing 12. The bottom housing 14 is fixedly connected to the valve body 13, and the second chamber 102 is located between the bottom housing 14 and the valve body 13. In this embodiment of the invention, as... Figure 10As shown, the bottom wall surface of the first chamber 101 near the second chamber 102 is defined as the first bottom wall surface S1, and the bottom wall surface of the second chamber 102 near the first chamber 102 is defined as the second bottom wall surface S2. Along the height direction of the electric valve, a portion of the second bottom wall surface S2 is closer to the upper housing 11 than a portion of the first bottom wall surface S1. Through this arrangement, a portion of the space in the first chamber 101 and a portion of the space in the second chamber 102 are at the same height in the height direction of the electric valve. This is equivalent to the portion of the space in the first chamber 101 being nested within the space in the second chamber 102 in the height direction of the electric valve. Compared to arranging the entire space of the first chamber 101 and the entire space of the second chamber 102 side-by-side at different heights in the height direction of the electric valve, the electric valve provided in this embodiment can compress the space in the height direction of the electric valve, facilitating miniaturization of the electric valve.

[0027] Please refer to further information. Figures 1 to 13 At least a portion of the control component 2 is sealed and installed between the upper housing 11 and the lower housing 12 and located within the first chamber 101. At least a portion of the valve core component 3 is sealed and installed between the valve body 13 and the bottom housing 14 and located within the second chamber 102. The valve core component 3 is drively connected to the control component 2, and the control component 2 can drive the valve core component 3 to rotate. The valve body 13 has at least two channels 131, and the valve core component 3 has a conducting cavity 311. The valve core component 3 includes a valve core ball 31, and the conducting cavity 311 passes through the valve core ball 31. The conducting cavity 311 of the valve core component 3 can open or close the corresponding two channels 131. The control component 2 includes a drive component 21, which can optionally be a motor. Figure 13 As shown, along the height direction of the electric valve, the distance a1 between the outer surface of the drive member 21 and the surface of the conduction cavity 311 is less than a predetermined distance, which can be 14 mm.

[0028] It should be noted that the above-mentioned fixed connection can be a non-removable connection method such as welding, or a connection method using fasteners such as screws. This invention does not limit this.

[0029] The valve body 13 is fixedly connected to the lower housing 12, the upper housing 11 is fixedly connected to the lower housing 12, and the bottom housing 14 is fixedly connected to the valve body 13. The above-mentioned fixed connections can be achieved through methods such as adhesive bonding. Alternatively, the above-mentioned fixed connections can be achieved through welding, such as laser welding or ultrasonic welding.

[0030] When the valve body 13 and the lower housing 12 are integrally formed, optionally, both the valve body 13 and the lower housing 12 can be made of plastic and integrally injection molded; when the valve body 13 and the lower housing 12 are fixedly connected, optionally, the valve body 13 and the lower housing 12 can be fixedly connected by welding, such as by laser welding, ultrasonic welding or other welding methods.

[0031] Understandably, the valve body 13 and the lower housing 12 are integrally formed, eliminating the need for screws for fixing, which reduces costs and makes the electric valve lighter. It also improves the sealing of the valve body 13 and alleviates the problem of external leakage. Since the distance a1 between the drive component 21 and the guide cavity 311 is less than 14 mm, the small distance between the drive component 21 and the guide cavity 311 compresses the space of the electric valve along the height direction, which can further reduce costs. Due to the small axial height of the electric valve and the small distance between the drive component 21 and the guide cavity 311, the coolant circulating in the valve core component 3 is conducive to cooling the control component 2, which can improve the stability of the control component 2 during operation and improve the safety of the electric valve.

[0032] In addition, the valve body 13 and the lower housing 12 are integrally formed, such as Figure 4 As shown, the electric valve also includes a bracket 15 connected to the outer surface of the lower housing 12 and the outer surface of the valve body 13. The outer surface of the lower housing 12 connected to the bracket 15 intersects with the outer surface of the valve body 13 connected to the bracket 15, allowing the bracket 15 to support the lower housing 12 and the valve body 13. Optionally, the bracket 15 is integrally formed or fixedly connected to at least one of the valve body 13 and the lower housing 12, the upper housing 11 is fixedly connected to the lower housing 12, and the bottom housing 14 is fixedly connected to the valve body 13. In specific implementations, the bracket 15 can be directly connected to the outer surface of the lower housing 12 and the outer surface of the valve body 13, or it can be connected to the outer surface of the lower housing 12 and the outer surface of the valve body 13 through a plate or block.

[0033] It should be noted that the bracket 15 can be integrally formed or fixedly connected to the lower housing 12, and / or the bracket 15 can be integrally formed or fixedly connected to the valve body 13; when the bracket 15 is integrally formed or fixedly connected to the lower housing 12, the bracket 15 can be integrally formed or fixedly connected to any position of the lower housing 12.

[0034] If the bracket 15 is fixedly connected to the lower housing 12 and the bracket 15 is fixedly connected to the valve body 13, the fixed connection can be achieved by welding, such as laser welding or ultrasonic welding. If the bracket 15 is integrally formed with the lower housing 12 and the bracket 15 is integrally formed with the valve body 13, the integral forming can be integral injection molding.

[0035] It is understandable that when the bracket 15 is integrally formed or fixedly connected to the lower housing 12, and the bracket 15 is connected to both the lower housing 12 and the valve body 13, the bracket 15 can support the lower housing 12, thereby providing shock absorption for the control component 2 installed between the lower housing 12 and the upper housing 11, and improving the overall structure's seismic resistance. When the bracket 15 is integrally formed or fixedly connected to the valve body 13, the bracket 15 supports the valve body 13.

[0036] Wherein, along the height direction of the electric valve, projecting downwards onto the lower housing 12, at least a portion of the orthographic projection of the valve body 13 and at least a portion of the orthographic projection of the bracket 15 are located inside the orthographic projection of the lower housing 12, and the orthographic projection of the bracket 15 is located on the outer periphery of a portion of the orthographic projection of the valve body 13. The bracket 15 includes a first connecting surface and a second connecting surface, the extension directions of the first connecting surface and the extension directions of the second connecting surface intersect, the first connecting surface is connected to the surface of the lower housing 12 facing the valve body 13, and the second connecting surface is connected to the surface of the side wall portion of the valve body 13.

[0037] Understandable, such as Figure 4 As shown, in this embodiment, the bracket 15 and the valve body 13 are integrally injection molded, and the bracket 15 and the lower housing 12 are integrally injection molded. Meanwhile, since the orthographic projection of the valve body 13 and the orthographic projection of the bracket 15 are located inside the orthographic projection of the upper housing 11, and the orthographic projection of the bracket 15 is located on the outer periphery of the orthographic projection of the valve body 13, and the extension direction of the first connecting surface connecting the bracket 15 and the lower housing 12 intersects the extension direction of the second connecting surface connecting the bracket 15 and the side wall of the valve body 13, the bracket 15, the lower housing 12, and the valve body 13 can form a triangular support structure. The bracket 15 provides support for both the lower housing 12 and the valve body 13, and the triangular support structure improves the stability of the structure.

[0038] like Figures 4 to 8 , Figure 13 As shown, in one embodiment, the control component 2 further includes a control board 22 electrically connected to the drive component 21, and a transmission component 23 tractively connected to the output end of the drive component 21. The transmission component 23 includes an output shaft 231 sealed to the lower housing 12. The output shaft 231 extends into the valve body 13 and is tractively connected to the valve core ball 31. The upper housing 11 and the lower housing 12 cooperate to form a first mounting portion 4 and a second mounting portion 5. The first mounting portion 4 and the second mounting portion 5 are arranged side by side along a direction intersecting the height direction of the electric valve. The drive component 21 is installed in the first mounting portion 4, and the control board 22 and the transmission component 23 are installed in the second mounting portion 5. The bracket 15 is connected to the outer surface of the first mounting portion 4. The distance a2 between the surface of the control board 22 facing the lower housing 12 and the surface of the conduction cavity 311 is less than 28 mm. In other embodiments, the valve core component 3 may have an output shaft extending into the lower housing 12, and the output shaft is connected to the control component 2.

[0039] The control board 22 is a printed circuit board (PCB) used to control the drive component 21, which can be a motor and has a large amplitude during operation. The transmission component 23 can be a gear drive or other similar mechanism. Optionally, the transmission component 23 includes multiple meshing gears 232, one of which can be fixedly connected to the output end of the drive component 21, and another gear 232 is connected to the valve core component 3 via an output shaft 231. Figure 5 , Figure 7 and Figure 8 As shown, when the drive unit 21 is activated, the output end of the drive unit 21 drives one of the gears 232 to rotate. Through the transmission of multiple intermediate gears 232, the gear 232 fixedly connected to the output shaft 231 rotates, which in turn causes the output shaft 231 to rotate together with the valve core component 3. The transmission is achieved by using multiple gears 232 meshing with each other, resulting in high transmission efficiency and precision, as well as good transmission reliability.

[0040] It is understandable that, such as Figures 4-8 , Figure 13 As shown, the control board 22 controls the drive component 21 to open. The output end of the drive component 21 acts on the transmission component 23. The output shaft 231 of the transmission component 23 drives the valve core component 3 to move, so that the valve core component 3 opens or closes the valve body 13 or switches the fluid flow path, thereby achieving the purpose of controlling the fluid flow rate and direction. The bracket 15 is integrally injection molded or fixedly connected to the outer surface of the first mounting part 4 facing the valve body 13. The bracket 15 provides a pressing support for the first mounting part 4, which enables the bracket 15 to have a shock absorption effect on the drive component 21 with a large amplitude, thereby effectively improving the shock resistance of the overall structure. Since the distance a2 between the surface of the control board 22 facing the lower housing 12 and the conduction cavity 311 is less than 28mm, the distance between the control board 22 and the conduction cavity 311 is small, which is conducive to the cooling effect of the coolant circulating in the valve core component 3 on the control board 22, further improving the safety of the electric valve.

[0041] Optionally, the distance between the drive component 21 and the guide cavity 311 is greater than or equal to 6 mm and less than 14 mm, and the distance a2 between the surface of the control plate 22 facing the lower housing 12 and the guide cavity 311 is greater than or equal to 20 mm and less than 28 mm. It can be understood that because the distance between the control plate 22 and the guide cavity 311 is small, and the distance between the drive component 21 and the guide cavity 311 is small, the coolant circulating in the valve core component 3 is conducive to better cooling of the control plate 22 and the drive component 21, making the electric valve safer. Furthermore, through the above settings, the coolant circulating in the valve core component 3 can also cool the transmission component 23 located near the control plate 22 and the drive component 21.

[0042] In one embodiment, the difference from the previous embodiment is that the bracket 15 is connected to the surface of the second mounting part 5. It is understood that since the transmission component 23 will cause vibration to the electric valve during the movement, the bracket 15 is integrally injection molded or fixedly connected to the second mounting part 5 so that the bracket 15 provides a pressing and supporting effect on the second mounting part 5, thereby enabling the bracket 15 to have a shock absorption effect on the transmission component 23, and thus effectively improving the seismic resistance of the overall structure.

[0043] In one embodiment, the difference between this embodiment and the previous embodiment is that the bracket 15 is connected to the surface of the first mounting part 4 and the surface of the second mounting part 5. It can be understood that the bracket 15 provides both the first mounting part 4 and the second mounting part 5 with a clamping and supporting function. That is, the bracket 15 not only has a shock-absorbing function for the driving component 21, but also for the transmission component 23, thereby further improving the shock resistance of the overall structure.

[0044] Among them, such as Figure 4 As shown, the upper housing 11 has a first sub-part 41 formed in a direction away from the lower housing 12, and the lower housing 12 has a second sub-part 42 corresponding to the first sub-part 41. The first sub-part 41 and the second sub-part 42 are arranged opposite to each other and cooperate to form a first mounting part 4, which facilitates the installation of the drive member 21 into the first mounting part 4; as Figures 6 to 8 As shown, the upper housing 11 also has a third sub-part 51 formed in the direction away from the lower housing 12, and the lower housing 12 also has a fourth sub-part 52 corresponding to the third sub-part 51. The third sub-part 51 and the fourth sub-part 52 cooperate to form a second mounting part 5, which facilitates the installation of control components and transmission components.

[0045] It is understandable that, such as Figures 4-8 As shown, in this embodiment, the driving component 21 is a motor. The shapes of the first sub-part 41 and the second sub-part 42 are adapted to the shape of the motor. Both the first sub-part 41 and the second sub-part 42 are arched, which allows the motor to be more stably installed between the first sub-part 41 and the second sub-part 42, and also provides protection for the motor. The bracket 15 is integrally formed or fixedly connected to the outer surface of the second sub-part 42 facing the valve body 13. The bracket 15 supports the second sub-part 42, thereby providing shock absorption for the driving component 21 installed between the second sub-part 42 and the first sub-part 41. The shapes of the third sub-part 51 and the fourth sub-part 52 are adapted to the shape of the gear 232, which is beneficial for the installation of the transmission component 23.

[0046] In order to achieve a sealed connection of the output shaft 231 within the lower housing 12, such as Figure 7 and Figure 9As shown, the electric valve also includes a first seal 61 and a second seal 62 sleeved on the output shaft 231, and a gasket 63 located between the first seal 61 and the second seal 62 and sleeved on the output shaft 231. The first seal 61 and the second seal 62 are both interference-fitted with the output shaft 231. The first seal 61 is sandwiched between the gasket 63 and the inner surface of the lower housing 12 facing the valve body 13.

[0047] It is understandable that, such as Figure 9 As shown, the first sealing element 61 can be an O-ring, and the second sealing element 62 can be an oil seal. The gasket 63 is embedded in the oil seal, which enhances the sealing effect of the oil seal. Through the double sealing structure, the seal between the output shaft 231 and the lower housing 12 is achieved, which improves the sealing performance of the control component 2 in the lower housing 12 and prevents the fluid flowing in the valve body 13 from leaking into the control component 2, thus protecting the control component 2.

[0048] In addition, combined Figure 7 , Figure 11 and Figure 13 As shown, the valve core component 3 includes a valve core ball 31, which is sealed and rotatably disposed in the receiving cavity defined by the valve body 13 and fixedly connected to the output shaft 231. The conducting cavity 311 passes through the valve core ball 31, and the output shaft 231 drives the valve core ball 31 to move, so that the conducting cavity 311 is connected to or cut off from the two channels 131.

[0049] It is understandable that, such as Figure 7 , Figure 12 and Figure 13 As shown, in this embodiment, two interconnected channels 131 are formed inside the valve body 13. Of course, in other embodiments, the number of channels 131 can be greater than two, depending on actual needs. The output shaft 231 drives the valve core ball 31 to rotate, thereby realizing the flow or cut-off of fluid.

[0050] Among them, such as Figure 11 and Figure 12As shown, to achieve a sealed connection between the valve body 13 and the valve core ball 31, the electric valve also includes a third sealing element 71, an elastic element 72, and a fourth sealing element 73 installed in the receiving cavity of the valve body 13. The elastic element 72 and the fourth sealing element 73 are both sleeved on the outer periphery of the third sealing element 71. The side of the third sealing element 71 adjacent to the valve core ball 31 is fitted to the valve core ball 31, and the surface of the third sealing element 71 adjacent to the valve core ball 31 is adapted to the surface of the valve core ball 31, facilitating a tight fit between the third sealing element 71 and the valve core ball 31, achieving a good sealing effect. Along the axial direction of the elastic element 72, the third sealing element 71 is clamped by the elastic element 72. The third seal 71 is tightly fitted between the valve core ball 31 and the inner wall surface of the valve body 13, achieving a tight fit between the third seal 71 and the valve core ball 31. A slot 711 communicating with the channel 131 is formed within the third seal 71. The output shaft 231 drives the valve core ball 31 to move, causing the slot 711 to connect or disconnect with the guiding cavity 311. Furthermore, the third seal 71 has a groove on the side adjacent to the channel 131, located on the side of the elastic member 72 away from the valve core ball 31. The groove is recessed from the outer peripheral surface of the third seal 71 towards its interior. The fourth seal 73 is located within the groove and clamped between the third seal 71 and the inner wall surface of the valve body 13. Through the above arrangement, a seal between the valve body 13 and the valve core component 3 of the electric valve can be achieved. It is understood that... Figure 7 , Figure 11 ,and Figure 12 As shown, in this embodiment, the electric valve has two channels 131, and the electric valve is provided with two third seals 71, two elastic elements 72, and two fourth seals 73. The third seal 71 has a T-shaped cross-section parallel to the axial direction. The third seal 71 can be a plastic sealing ring, the elastic element 72 is a spring, and the fourth seal 73 can be an O-ring. Through the combined action of the third seal 71 and the elastic element 72, and further by setting the fourth seal 73, a better sealing connection is achieved between the valve body 13 and the valve core ball 31, which can realize the internal leakage sealing between the valve body 13 and the valve core component 3, and better ensure the normal operation of the electric valve. The combined action of the guide cavity 311, the slot 711, and the channel 131 achieves the purpose of controlling the fluid flow rate and direction.

[0051] The present invention also provides a thermal management system including an electric valve according to any of the above embodiments. The working medium in the thermal management system includes coolant, and the coolant flowing in the electric valve can exchange heat with the drive component 21. Further details regarding this electric valve are available later. Figure 1-13 The coolant circulates within the conduction cavity 311 of the valve core component 3. Since the drive component 21 in the control component is close to the conduction cavity 311, it can cool the drive component 21, thus improving the safety of the electric valve in the thermal management system.

[0052] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. An electric valve, characterized in that, The device includes a valve housing (1), a control component (2), and a valve core component (3). The valve housing (1) includes an upper housing (11), a lower housing (12), a valve body (13), and a bottom housing (14) that are fixedly connected. The upper housing (11), the lower housing (12), the valve body (13), and the bottom housing (14) are arranged along the height direction of the electric valve. The valve body (13) is integrally formed or fixedly connected to the lower housing (12). The upper housing (11) is fixedly connected to the lower housing (12), and the bottom housing (14) is fixedly connected to the valve body (13). The electric valve has a first chamber (101) and a second chamber (102). The first chamber (101) is located between the upper housing (11) and the lower housing (12). The second chamber (102) is located between the valve body (13) and the bottom housing (14). At least a portion of the control component (2) is located in the first chamber (101). At least a portion of the valve core component (3) is located in the second chamber (102). The control component (2) is capable of driving the valve core component (3) to rotate. The bottom wall surface of the first chamber (101) near the second chamber (102) is defined as the first bottom wall surface (S1). The bottom wall surface of the second chamber (102) near the first chamber (101) is defined as the second bottom wall surface (S2). Along the height direction of the electric valve, a portion of the second bottom wall surface (S2) is closer to the upper housing (11) than a portion of the first bottom wall surface (S1). In the height direction of the electric valve, a portion of the space containing the first chamber (101) is nested into the space containing the second chamber (102).

2. The electric valve as described in claim 1, characterized in that, The valve body (13) has at least two channels (131), the valve core component (3) has a through cavity (311), the through cavity (311) of the valve core component (3) can open or close the corresponding two channels (131), the control component (2) includes a drive member (21), and the distance between the drive member (21) and the through cavity (311) along the height direction of the electric valve is less than 14 mm.

3. The electric valve as described in claim 2, characterized in that, The valve body (13) is integrally formed with the lower housing (12). The electric valve also includes a bracket (15) connected to the outer surface of the lower housing (12) and the outer surface of the valve body (13). The outer surface of the lower housing (12) connected to the bracket (15) intersects with the outer surface of the valve body (13) connected to the bracket (15). The bracket (15) is integrally formed or fixedly connected to at least one of the valve body (13) and the lower housing (12).

4. The electric valve as described in claim 3, characterized in that, The valve body (13) and the lower housing (12) are integrally injection molded. The bracket (15) and the valve body (13) are integrally injection molded or welded. The bracket (15) and the lower housing (12) are integrally injection molded or welded. The upper housing (11) and the lower housing (12) are welded together. The bottom housing (14) and the valve body (13) are welded together.

5. The electric valve as described in claim 3, characterized in that, Projecting along the height direction of the electric valve onto the lower housing (12), at least a portion of the orthographic projection of the valve body (13) and the orthographic projection of the bracket (15) are located inside the orthographic projection of the lower housing (12), and the orthographic projection of the bracket (15) is located on the outer periphery of a portion of the orthographic projection of the valve body (13). The bracket (15) includes a first connecting surface and a second connecting surface, the extension direction of the first connecting surface and the extension direction of the second connecting surface intersect, the first connecting surface is connected to the surface of the lower housing (12) facing the valve body (13), and the second connecting surface is connected to the surface of the side wall portion of the valve body.

6. The electric valve as described in any one of claims 3 to 5, characterized in that, The control component (2) further includes a control board (22) electrically connected to the drive component (21) and a transmission component (23) drively connected to the output end of the drive component (21). The transmission component (23) includes an output shaft (231) sealed to the lower housing (12). The upper housing (11) and the lower housing (12) cooperate to form a first mounting part (4) and a second mounting part (5). The first mounting part (4) and the second mounting part (5) are arranged side by side along a direction intersecting the height direction of the electric valve. The drive component (21) is installed in the first mounting part (4). The control board (22) and the transmission component (23) are installed in the second mounting part (5). The bracket (15) is connected to the outer surface of the first mounting part (4) and / or the outer surface of the second mounting part (5). The distance a2 between the surface of the control board (22) facing the lower housing (12) and the conduction cavity (311) is less than 28 mm.

7. The electric valve as described in claim 6, characterized in that, The distance a1 between the drive component (21) and the conductive cavity (311) is greater than or equal to 6 mm and less than 14 mm, and the distance a2 between the surface of the control plate (22) facing the lower housing (12) and the conductive cavity (311) is greater than or equal to 20 mm and less than 28 mm.

8. The electric valve as described in claim 6, characterized in that, The electric valve further includes a first seal (61) and a second seal (62) sleeved on the output shaft (231), and a gasket (63) located between the first seal (61) and the second seal (62) and sleeved on the output shaft (231). The first seal (61) and the second seal (62) are both interference-fitted with the output shaft (231). The first seal (61) is sandwiched between the gasket (63) and the inner surface of the lower housing (12) facing the valve body (13).

9. The electric valve as described in claim 6, characterized in that, The valve core component (3) includes a valve core ball (31), which is sealed and rotatably disposed in the receiving cavity of the valve body (13) and is connected to the output shaft (231) for transmission. The conducting cavity (311) passes through the valve core ball (31), and the output shaft (231) drives the valve core ball (31) to move, so that the conducting cavity (311) is connected or cut off from the two channels (131).

10. The electric valve as described in claim 9, characterized in that, The electric valve further includes a third sealing element (71), an elastic element (72), and a fourth sealing element (73) installed in the receiving cavity of the valve body (13). The elastic element (72) and the fourth sealing element (73) are both sleeved on the outer periphery of the third sealing element (71). The side of the third sealing element (71) adjacent to the valve core ball (31) is fitted to the valve core ball (31). Along the axial direction of the elastic element (72), the third sealing element (71) is clamped between the valve core ball (31) and the inner wall surface of the valve body (13) by the elastic element (72). The third sealing element (71) has a groove formed inside that is consistent with the inner wall surface of the valve body (13). The channel (131) is connected to the slot (711), and the output shaft (231) drives the valve core ball (31) to move, so that the slot (711) is connected or cut off from the guide cavity (311); the third seal (71) has a groove on the side adjacent to the channel (131), the groove is located on the side of the elastic member (72) away from the valve core ball (31), the groove is recessed from the outer peripheral surface of the third seal (71) to the interior of the third seal (71), and the fourth seal (73) is located in the groove and clamped between the third seal (71) and the inner wall surface of the valve body (13).

11. A thermal management system, characterized in that, The electric valve as described in any one of claims 1 to 10 is included, wherein the control component (2) includes a drive element (21) capable of driving the valve core component (3) to rotate, and the working medium in the thermal management system includes a coolant, wherein the coolant flowing in the electric valve is capable of heat exchange with the drive element (21).

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