Fluid control components, assembly method of fluid control components, and thermal management system

Abstract

This invention discloses a fluid control component, a method for assembling a fluid control group, and a thermal management system. The component includes a main housing, a valve core assembly, and a pump assembly. The main housing has a first cavity and a second cavity, and at least one coolant inlet and a coolant outlet. The main housing has a contraction section, and a transition channel is located within the contraction section. The equivalent diameter of the transition channel is smaller than the equivalent diameters of the first and second cavities. The valve core assembly has a bent channel. The first port of the bent channel communicates with the coolant inlet, and the second port of the bent channel is located within the contraction section and communicates with the transition channel. A portion of the impeller extends into the contraction section, and the impeller inlet communicates with the transition channel. The transition channel connects the second port of the bent channel with the impeller inlet. This fluid control component has a compact structure and stable performance.

Description

Technical Field

[0001] This invention relates to the field of fluid control. Background Technology

[0002] Coolant is typically used in vehicle thermal management systems. It is used to cool or heat components in new energy vehicles, such as batteries and electric motors. The thermal management system requires pumps to deliver the fluid and valves to control its flow path. Pumps and valves are connected to the system via piping.

[0003] When pumps and valves are integrated together, their mutual influence must be taken into account. In particular, after the pump and valve are integrated, the connection channel between the valve and the pump will be affected by the pump flow field. Summary of the Invention

[0004] The purpose of this invention is to provide a fluid control component.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] A fluid control assembly includes a main housing, a valve core component, and a pump component. The main housing has a first cavity, a second cavity, and a transition channel located between the first cavity and the second cavity. At least a portion of the valve core component is located in the first cavity, and the pump component includes an impeller, at least a portion of which is located in the second cavity.

[0007] The main housing has at least one coolant inlet and one coolant outlet.

[0008] The main housing has a contraction section, the transition channel is located in the contraction section, the equivalent diameter of the transition channel is smaller than the equivalent diameter of the first cavity and the second cavity, the valve core component has a bent channel, the first port of the bent channel can communicate with the coolant inlet, the second port of the bent channel extends into the contraction section and communicates with the transition channel, a part of the impeller extends into the contraction section and the inlet of the impeller communicates with the transition channel, and the transition channel connects the second port of the bent channel with the inlet of the impeller.

[0009] Another objective of this invention is to provide a method for assembling a fluid control component.

[0010] A method for assembling a fluid control component, comprising:

[0011] A main housing is provided, the main housing having a first opening and a contraction portion;

[0012] A connecting sleeve is provided, which is fitted into a groove in the main housing;

[0013] A valve core component is provided, which is inserted into the first opening and the protrusion of the valve core component is engaged with the contraction portion;

[0014] A motor housing containing a motor is provided. After the rotating shaft of the motor housing is limited to the boss of the valve core component, the motor housing is sealed and fixed to the main housing.

[0015] A pump housing and a pump assembly are provided, wherein the top of the impeller of the pump assembly is fitted into the constriction section, and most of the pump assembly is fitted into the pump housing;

[0016] Assemble and fix the main housing and the pump housing.

[0017] Another objective of this invention is to provide a thermal management system.

[0018] A thermal management system includes a battery heat exchange circuit. The battery heat exchange circuit includes a fluid control component according to the above technical solution. The fluid control component includes at least one coolant inlet and a coolant outlet. The coolant inlet is connected to the coolant outlet through the valve core component and the impeller. The coolant inlet and the coolant outlet are connected to pipelines in the battery heat exchange circuit.

[0019] A thermal management system includes an engine cooling circuit, the engine cooling circuit including a fluid control component according to the above technical solution, the fluid control component including at least one coolant inlet and a coolant outlet, the coolant inlet being connected to the coolant outlet through the valve core component and the impeller, and the coolant inlet and coolant outlet being connected to pipelines in the engine cooling circuit.

[0020] The fluid control component of the above technical solution has the functions of fluid control and fluid pumping. At the same time, the main housing has a first cavity, a second cavity, and a transition channel. The transition channel is located in the contraction section. The equivalent diameter of the transition channel is smaller than the equivalent diameter of the first cavity and the second cavity. The second port of the bend channel of the valve core component extends into the contraction section and communicates with the transition channel. A part of the impeller extends into the contraction section and the inlet of the impeller communicates with the transition channel. The transition channel connects the second port of the bend channel with the inlet of the impeller. This facilitates the smooth entry of fluid from the valve core component into the impeller and is beneficial to the stability of the flow field. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of one embodiment of the present invention;

[0022] Figure 2 for Figure 1 Cross-sectional schematic diagram of the fluid control component;

[0023] Figure 3 for Figure 1 A schematic diagram of the main housing of the fluid control assembly from one perspective;

[0024] Figure 4 for Figure 1 A schematic diagram of the main housing of the fluid control assembly from another perspective;

[0025] Figure 5 for Figure 1 Another schematic diagram of the main housing of the fluid control assembly;

[0026] Figure 6 for Figure 1 Schematic diagram of the middle valve core component;

[0027] Figure 7 for Figure 6 A cross-sectional schematic diagram of the valve core component shown;

[0028] Figure 8 for Figure 1 A cross-sectional schematic diagram of the main housing of the fluid control assembly;

[0029] Figure 9 for Figure 1 Exploded view of part of the main housing of the fluid control component;

[0030] Figure 10 A cross-sectional schematic diagram of another embodiment of the main housing. Detailed Implementation

[0031] Reference Figures 1-5 , Figure 1 The diagram illustrates one embodiment of a fluid control assembly 1. The fluid control assembly 1 includes a main housing 11, a valve core component 12, a pump component 13, and a pump housing 14. The main housing 11 and pump housing 14 are assembled and fixed. The valve core component 12 is rotatable relative to the main housing 11. The main housing 11 includes a first chamber 111 and a second chamber 120. A majority of the valve core component 12 is located in the first chamber 111. The pump housing 14 includes a pump chamber 141, and a majority of the pump component 13 is located in the pump chamber 14. The pump component 13 includes an impeller 131. At least a portion of the impeller 131 is located in the second chamber 120 of the main housing 11. The impeller 131 has an inlet 132 and an outlet 133. The inlet 132 of the impeller 131 is located in the middle of the impeller 131. The valve core component 12 has at least an inlet 121 and an outlet 122, and the outlet 122 of the valve core component 12 communicates with the inlet 132 of the impeller 131. The main housing 11 has at least one coolant inlet 101 and a coolant outlet 102. The coolant inlet 101 is connected to the inlet 121 of the valve core component 12, and the coolant outlet 102 is connected to the outlet 133 of the impeller.

[0032] The fluid control assembly can be used to deliver fluid as required. After the fluid enters the valve core component from the coolant inlet, it can enter the impeller through the impeller inlet 131 and 132. Under the centrifugal force of the rotating impeller, it leaves from the coolant outlet after passing through the impeller outlet 133. Since the fluid control assembly has the functions of both a pump and a valve, it can realize the structure of the pump and valve used in the previous system in one component. Compared with this, the fluid control assembly has a smaller structural size. The fluid coming out of the valve core component can directly enter the impeller without the need to set up additional connecting pipes, which reduces costs.

[0033] The main housing 11 has a contraction section 125 and a transition channel 126. The transition channel 126 is located between the first cavity 111 and the second cavity 120. The transition channel 126 is located within the contraction section 125 and connects the first cavity 111 and the second cavity 120. The first cavity 111 and the second cavity 120 are separated by the contraction section 125. The equivalent diameter of the transition channel 126 is smaller than the equivalent diameter of the first cavity 111 and the equivalent diameter of the second cavity 120. The valve core component 12 has a bent channel 12. 7. The first port of the bend channel 127 (i.e., the inlet of the valve core component) is connected to the coolant inlet 101. The second port of the bend channel 127 (i.e., the outlet of the valve core component) is located in the contraction section 125 and is connected to the transition channel 126. A portion of the impeller 131 extends into the contraction section 125, and the inlet 132 of the impeller 131 is connected to the transition channel 126. The second port of the bend channel 127 is connected to the inlet 132 of the impeller 131. The transition channel 126 connects the second port of the bend channel 127 with the inlet 132 of the impeller. The second port of the bend channel 127 and the inlet 132 of the impeller 131 are coaxially arranged, and the outlet 133 of the impeller 131 is connected to the coolant outlet 102. The second port of the bend channel 127 and the inlet of the impeller 131 are both located in the region 126 formed by the contraction section 125. The transition of the flow channel takes place in the region formed by the contraction section 125. On the one hand, this allows the fluid flowing out of the bend channel 127 to enter the impeller 131 more smoothly, and also reduces the backflow of fluid from the impeller outlet to the impeller inlet. On the other hand, the bend channel and the impeller inlet are set up in a full correspondence, similar to the corresponding connection between pipes, resulting in a more stable flow field.

[0034] Reference Figure 6 , Figure 7The valve core component 12 has a main body 128 and a protrusion 129. The main body 128 has a spherical periphery and a first port of a bent channel 127 is opened on the periphery of the main body 128. The protrusion 129 extends from the main body 128 toward the second cavity 120. The equivalent outer diameter of the protrusion 129 is smaller than the equivalent outer diameter of the main body 128. The protrusion 129 extends into the contraction part 125. The contraction part 125 has a limiting wall 161. The main body 128 has a first limiting surface 130 and the protrusion 129 has a second limiting surface 142. The first limiting surface 130 and the second limiting surface 142 are stepped. The first limiting surface 130, the second limiting surface 142 and the limiting wall 161 are configured to cooperate with each other.

[0035] The valve core component 12 is a spherical valve core, the bent channel 127 is an L-shaped channel, the second port of the L-shaped channel is connected to the inlet 132 of the impeller 131, the first port of the L-shaped channel is connected to the coolant inlet, and the outlet 133 of the impeller 131 is connected to the coolant outlet.

[0036] The main housing 11 has openings at both ends and has a first opening 163 and a second opening 143. A contraction portion 125 is located between the first opening 163 and the second opening 143. The equivalent inner diameter of the first opening 163 is larger than the equivalent inner diameter of the contraction portion 125, and the equivalent inner diameter of the second opening 143 is larger than the equivalent inner diameter of the contraction portion 125. The valve core component 12 has a boss 162. The boss 162 and the protrusion 129 are located on opposite sides, and most of the boss 162 is located in the first opening 163.

[0037] The fluid control assembly 1 has a rotating shaft 151, one end of which is inserted into a boss 162, and the rotating shaft 151 and the boss 162 are in a limiting engagement.

[0038] The main housing 11 is made of plastic and has an outer wall portion 165 and a support wall 164. The support wall 164 corresponds to the first cavity 111. The support wall 164 is longitudinally connected to the first opening portion 163 and the contraction portion 125. The support wall 164 has an inner wall surface, which is arc-shaped and cooperates with the valve core component 12. The main housing 11 has a hollow area 166. A part of the hollow area 166 is located between the support wall 164 and the outer wall portion 165 of the main housing 11. The hollow area 166 is not connected to the second cavity 120. The thickness of the support wall 164 is approximately equal to the thickness of the outer wall portion of the main housing 11.

[0039] The support walls 164 are at least two spaced apart. The main housing 11 has a groove 167 located between at least two support walls 164. The fluid control assembly 1 has a connecting sleeve 168, a part of which is located in the groove 167. The connecting sleeve 168 has a sealing surface that abuts against the valve core component 12. The connecting sleeve 168 is hollow and connects the coolant inlet 101 to the first port of the valve core component 12.

[0040] The main housing 11 has a connecting wall 170, which has a long wall 171 along the length of the groove 167 and a short wall 172 along the width of the groove 167. The two ends of the long wall 171 are connected to the support wall 164, and the short wall 172 connects the outer wall portion 165 of the main housing 11 to the long wall 171. The connecting wall 170 has a top 144, and the support wall 164 has a top 145.

[0041] The fluid control assembly 1 also includes a motor 15, a motor housing 16, and a seal 17. The motor 15 is capable of driving the valve core component 12 to move. The motor housing 16 is assembled and fixed to the main housing 11. At least a portion of the motor 15 is housed in the motor housing 16. The motor housing 16 is assembled on the top of the connecting wall 170 and the support wall 164. The outer wall portion 165 of the main housing 11 has an end wall portion 173. The end wall portion 173 is stepped with the top of the connecting wall 170 and the support wall 164. The motor housing 16 and the end wall portion 173 are radially sealed by the seal 17.

[0042] The main housing includes a cavity top, which is part of the wall forming a second cavity. The impeller 131 has a top cover 134, and a small gap is provided between the cavity top and the impeller's top cover. During pump operation, the impeller may move axially, causing the transfer channel to have different heights in the axial direction of the impeller's movement.

[0043] The main housing 11 includes a cover plate 112, which is part of the top of the cavity. The cover plate 112 faces the upper cover 134 and the cover plate 112 and the upper cover 134 are kept at a certain distance. The vertical projection of the upper cover 134 toward the cover plate 112 falls on the cover plate 112. This helps the fluid to be drawn from the impeller inlet into the impeller interior and reduces the backflow of fluid from the impeller outlet to the impeller inlet, thus reducing the impact on pump efficiency. In addition, the spaced arrangement of the cover plate 112 and the upper cover 134 makes the impeller movement smoother and reduces the friction that may occur between them.

[0044] The main housing 11 has a small-diameter portion 112 and a large-diameter portion 113, which are separated by their outer dimensions. The first cavity 111 is located in the small-diameter portion 112, and the large-diameter portion 113 accommodates a portion of the pump component 13. Most of the impeller 131 is located in the large-diameter portion 113. The projection of the cover portion 112 along the axial direction of the valve core component falls into the small-diameter portion 112. The main housing 11 has a first tube portion 114 and a second tube portion 115. The first tube portion 114 is connected to the small-diameter portion 112, and the second tube portion 115 is connected to the large-diameter portion 113. The extension line of the outer wall portion of the second tube portion 115 towards the small-diameter portion 112 passes through the area of ​​the cover portion 112, so that the wall portion of the main housing 11 at the corresponding position of the cover portion 112 needs to serve as both a fixing structure for the valve core component and a fixing structure for the impeller structure. In this design, the first pipe section 114 serves as a fluid inlet pipe, and the second pipe section 115 serves as a fluid outlet pipe. Fluid can enter through the first pipe section 114 and exit through the second pipe section 115, controlled by the movement of the valve core component. This is merely an example; it should be understood that the main housing may also have one fluid inlet pipe and one fluid outlet pipe, in which case the valve core component is used to control the flow of fluid and regulate the flow rate. The main housing may also have two or more fluid inlet pipes, in which case the valve core component can be used to switch, mix, or regulate the flow path of fluid from different inlet pipes. Specifically, as another embodiment, the main housing has a third pipe section 116 connected to the small-diameter section 112, and the third pipe section 116 can serve as a fluid inlet pipe.

[0045] The main housing 11 includes an outer shell portion 113, and a cover plate 112 is assembled and fixed to the outer shell portion 113. The outer shell portion 113 is provided with a contraction portion 125, a support wall 164, and an outer wall 165. The contraction portion 125 has an annular wall portion 1131, the equivalent inner diameter of which is smaller than the equivalent inner diameter of the outer wall portion 165. The cover plate 112 is located between the annular wall portion 1131 and the outer wall portion 165. The annular wall portion 1131 is located between the first cavity 111 and the second cavity 120. The support wall 164 is connected to the annular wall portion 1131 and the outer wall portion 165. The main housing 11 has a hollow area 166, a portion of which is located between the support wall 164 and the outer wall portion 165, and a portion of which is located between the annular wall portion 1131 and the outer wall portion 165. A cover plate 112 is located between the annular wall portion 1131 and the outer wall portion 165, and the cover plate 112 seals the side of the hollow area 166 facing the impeller. The hollow area is not connected to the first cavity, nor is it connected to the second cavity. The outer housing portion 113 is provided with the hollow area 166, and the cover plate is located between the annular wall portion and the outer wall portion. The cover plate seals the side of the hollow area facing the impeller, which not only helps stabilize the main housing structure but also helps maintain a certain pump efficiency.

[0046] The outer casing 113 is formed by plastic injection molding. During the plastic injection molding process, if the plastic is not uniformly thick or thin during cooling and demolding, the thicker plastic will have a large shrinkage rate, which can easily lead to structural deformation. This will affect the pump efficiency after the pump components are assembled in the casing structure. In addition, since the cover plate 112 needs to fit with the upper cover of the impeller, excessive structural deformation will cause significant deformation at the mating part of the cover plate 112 and the impeller, affecting hydraulic efficiency.

[0047] The impeller 131 has a convex ring 135 that protrudes from the upper cover 134 and extends into the central region of the annular wall portion 1131. The convex ring 135 serves as the inlet of the impeller 131, and the outlet 122 of the valve core component 12 is located in the central region of the annular wall portion 1131. This allows fluid to enter the inlet of the impeller 131 from the outlet 122 of the valve core component 12 in the central region of the annular wall portion 1131, which helps the pump to draw fluid from the inlet and also helps to unify the flow field, thus improving the pump's hydraulic efficiency. In addition, this arrangement also makes the structure of the fluid control component, which integrates fluid control and fluid pumping functions, more compact and smaller.

[0048] The annular wall portion 1131 and the outer wall portion 165 are arranged concentrically, with the annular wall portion 1131 and the outer wall portion 165 spaced apart. The cover plate 112 connects the inner walls of the annular wall portion 1131 and the outer wall portion 165. The thickness of the annular wall portion 1131 can be approximately equal to the thickness of the outer wall portion 165.

[0049] As one specific implementation method, refer to Figure 8 and Figure 9 The outer wall portion 165 has at least two lugs 1133, and the cover plate 112 has a side portion 1121 and a bottom portion 1122. The bottom portion 1122 faces the upper end face of the impeller, and the side portion 1121 extends away from the impeller. The side portion 1121 has a spring piece 1123, which is snapped into the lugs 1133. After the outer shell is formed, the cover plate 112 and the outer shell portion 113 are connected by snap-fit, making assembly simple.

[0050] As another implementation method, refer to Figure 10 The outer casing 113 has at least two fixing holes 1134, and the cover plate 112 has at least two protrusions 1124, which correspond to the fixing holes 1134. The cover plate 112 is fixed to the outer casing 113 with screws. After the outer casing is formed, the cover plate 112 and the outer casing 113 are connected by screws, which simplifies assembly.

[0051] The outer wall portion 165 has a raised wall 1135 located on the outer periphery of the cover plate 112, protruding towards the impeller relative to the cover plate 112. The outer casing portion 113 has a vortex channel 1136 and an outlet 1137, with the vortex channel 1136 communicating with the outlet 1137. The vortex channel 1136 has a variable diameter, and the outlet is located in the third pipe section. Thus, after the fluid exits from the impeller outlet and enters the vortex channel 1136, the fluid can be thrown out by centrifugal force and exit from the third pipe section. The raised wall contributes to the pump's hydraulic efficiency.

[0052] The assembly method of fluid control component 1 includes the following:

[0053] A housing portion 113 is provided, the housing portion 113 having a first opening, a second opening, and a contraction portion 125;

[0054] A cover plate 112 is provided, which is inserted into the second opening, and the cover plate 112 is assembled and fixed with the outer shell portion 113 to form the main shell 11;

[0055] A connecting sleeve 168 is provided, which is fitted from the first opening 163 into the groove 167 of the main housing 11;

[0056] A valve core component 12 is provided, the valve core component 12 is inserted through the first opening 163, and the protrusion of the valve core component 12 is engaged with the contraction portion 125;

[0057] A motor housing 16 containing a motor is provided. After the rotating shaft of the motor housing 16 is limited to the protrusion of the valve core component 12, the motor housing 16 is sealed and fixed to the main housing 11.

[0058] A pump housing 14 and a pump component 13 are provided, wherein the top of the impeller of the pump component 13 is fitted into the constriction section 125, and most of the pump component 13 is fitted into the pump housing 14.

[0059] Assemble and fix the main housing 11 and the pump housing 14.

[0060] The fluid control components assembled using this method are beneficial for both sealing the valve core components and for the fit between the valve core components and the impeller of the pump components, thereby stabilizing the hydraulic efficiency of the pump components.

[0061] Fluid control components can also be used in thermal management systems, where they can be connected to coolant flow paths used for battery heat exchange or engine cooling.

[0062] As one implementation, a thermal management system includes a battery heat exchange circuit. The battery heat exchange circuit includes a fluid control component 1, which includes at least one coolant inlet 101 and a coolant outlet 102. The coolant inlet 101 is connected to the coolant outlet through the valve core component and the impeller. The coolant inlet and the coolant outlet are connected to pipelines in the battery heat exchange circuit.

[0063] As another embodiment, a thermal management system includes an engine cooling circuit, the engine cooling circuit including a fluid control component, the fluid control component including at least one coolant inlet 101 and a coolant outlet 102, the coolant inlet being connected to the coolant outlet through the valve core component and the impeller, and the coolant inlet and coolant outlet being connected to pipelines in the engine cooling circuit.

[0064] 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. For example, the directional definitions such as "front", "back", "left", "right", "up", and "down" are used. 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 combine, modify or substitute the present invention with each other. 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 claims of the present invention.

Claims

1. A fluid control assembly, comprising a main housing, a valve core component, and a pump component, wherein the main housing has a first cavity, a second cavity, and a transition channel, the transition channel being located between the first cavity and the second cavity, at least a portion of the valve core component being located in the first cavity, and the pump component including an impeller, at least a portion of the impeller being located in the second cavity; The main housing has at least one coolant inlet and one coolant outlet. The main housing has a contraction section, the transition channel is located in the contraction section, the equivalent diameter of the transition channel is smaller than the equivalent diameter of the first cavity and the second cavity, the valve core component has a bent channel, the first port of the bent channel can communicate with the coolant inlet, the second port of the bent channel is located in the contraction section and communicates with the transition channel, a portion of the impeller extends into the contraction section and the inlet of the impeller communicates with the transition channel, the transition channel connects the second port of the bent channel with the inlet of the impeller; the valve core component has a main body and a protrusion, the protrusion extends from the main body toward the second cavity, the protrusion extends into the contraction section, the contraction section has a limiting wall, the valve core component has a first limiting surface and a second limiting surface, the first limiting surface and the second limiting surface cooperate with the limiting wall.

2. The fluid control assembly of claim 1, wherein: The main body has a spherical periphery, and the first port of the bent channel is opened on the periphery of the main body. The equivalent outer diameter of the protrusion is smaller than the equivalent outer diameter of the main body. The valve core component is a spherical valve core. The bent channel is an L-shaped channel. The second port of the L-shaped channel is connected to the inlet of the impeller. The first port of the L-shaped channel is connected to the coolant inlet. The outlet of the impeller is connected to the coolant outlet.

3. The fluid control assembly of claim 1 or 2, wherein: The outlet of the impeller is connected to the outlet of the coolant. The main housing has openings at both ends and has a first opening and a second opening. The constriction portion is located between the first opening and the second opening. The equivalent inner diameter of the first opening is larger than the equivalent inner diameter of the constriction portion. The valve core component has a boss. The boss and the protrusion are located on opposite sides. Most of the boss is located in the first opening. The fluid control assembly has a rotating shaft, one end of which is inserted into the protrusion, and the rotating shaft and the protrusion are in a limiting engagement. The main housing has a cavity top, which is a part of the wall forming the second cavity, and a small gap is provided between the cavity top and the upper cover of the impeller.

4. The fluid control assembly of claim 3, wherein: The main housing is made of plastic and has a support wall. The support wall longitudinally connects the first opening and the contraction portion. The support wall has an inner wall surface that is arc-shaped and mates with the valve core component. There is a hollow area between the support wall and the outer wall of the main housing. This hollow area is not connected to the second cavity. The thickness of the support wall is equal to the thickness of the outer wall of the main housing.

5. The fluid control assembly of claim 4, wherein: The supporting walls are at least two spaced apart, and the main housing has a groove located between the at least two supporting walls; The fluid control assembly has a connecting sleeve, a portion of which is located in the groove. The connecting sleeve has a sealing surface that abuts against the valve core component. The connecting sleeve is hollow and connects the coolant inlet to a first port of the valve core component.

6. The fluid control assembly of claim 5, wherein: The main housing has a connecting wall, which has a long wall along the length of the groove and a short wall along the width of the groove. The two ends of the long wall are respectively connected to the supporting wall, and the short wall connects the outer wall of the main housing to the long wall. The connecting wall has a top, and the supporting wall has a top; The fluid control assembly includes a motor, a motor housing, and a seal. The motor is capable of driving the valve core component to move. The motor is located in the motor housing, which is assembled and fixed to the main housing. The motor housing is assembled on the top of the connecting wall and the supporting wall. The outer wall of the main housing has an end wall portion, which is stepped with the top of the connecting wall and the supporting wall. The motor housing and the end wall portion are radially sealed by the seal.

7. The fluid control assembly according to claim 1, 2, or 4, characterized in that: The main housing has a small-diameter portion and a large-diameter portion, at least a portion of the valve core component is located in the small-diameter portion, and at least a portion of the impeller is located in the large-diameter portion. The main housing has a first tube section, a second tube section, and a third tube section. The first tube section is connected to the side of the small diameter section, the second tube section is connected to the side of the large diameter section, and the third tube section is connected to the side of the small diameter section. The fluid control assembly includes a pump housing, which is assembled and fixed to the main housing, with most of the pump components located in the pump housing.

8. The fluid control assembly according to claim 3, characterized in that: The main housing has a small-diameter portion and a large-diameter portion, at least a portion of the valve core component is located in the small-diameter portion, and at least a portion of the impeller is located in the large-diameter portion. The main housing has a first tube section, a second tube section, and a third tube section. The first tube section is connected to the side of the small diameter section, the second tube section is connected to the side of the large diameter section, and the third tube section is connected to the side of the small diameter section. The fluid control assembly includes a pump housing, which is assembled and fixed to the main housing, with most of the pump components located in the pump housing.

9. A method for assembling a fluid control component, comprising: A main housing is provided, the main housing having a first opening and a contraction portion; A connecting sleeve is provided, which is fitted into a groove in the main housing; A valve core component is provided, which is inserted into the first opening and the protrusion of the valve core component is engaged with the contraction portion; A motor housing containing a motor is provided. After the rotating shaft of the motor housing is limited to the boss of the valve core component, the motor housing is sealed and fixed to the main housing. A pump housing and a pump assembly are provided, wherein the top of the impeller of the pump assembly is fitted into the constriction section, and most of the pump assembly is fitted into the pump housing; Assemble and fix the main housing and the pump housing.

10. A thermal management system comprising a battery heat exchange circuit, the battery heat exchange circuit comprising a fluid control component according to any one of claims 1-8, the fluid control component comprising at least one coolant inlet and a coolant outlet, the coolant inlet being connected to the coolant outlet via the valve core component and the impeller, and the coolant inlet and coolant outlet being connected to a pipeline in the battery heat exchange circuit.

11. A thermal management system comprising an engine cooling circuit, the engine cooling circuit comprising a fluid control component according to any one of claims 1-8, the fluid control component comprising at least one coolant inlet and a coolant outlet, the coolant inlet being connected to the coolant outlet via the valve core component and the impeller, and the coolant inlet and coolant outlet being connected to a pipeline in the engine cooling circuit.

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