An electric pump

Abstract

The application relates to an electric pump. The electric pump comprises a driving assembly, an impeller, a shell and an electric control component. The shell has a first chamber, a second chamber, a first inlet and a first outlet, and the second chamber is in communication with the first inlet and the first outlet respectively. At least part of the electric control component is located in the first chamber. The driving assembly can be used to drive the impeller to rotate, the impeller is at least partially located in the second chamber, and the impeller can be used to drive fluid to flow from the first inlet into the second chamber and to flow out of the first outlet. The electric pump has a first cooling part, at least part of the first cooling part is located in the first chamber, the first chamber is filled with a flowable heat exchange medium, and the heat exchange medium can exchange heat with the electric control component and the first cooling part respectively. The technical scheme provided by the application is beneficial to improving the uniformity of heat dissipation of related components in a circuit board.

Description

Technical Field

[0001] This application relates to the field of flow control, particularly to automotive thermal management systems, and especially to an electric pump. Background Technology

[0002] An electric pump consists of a rotor, shaft, stator, impeller, and circuit board. When the pump is operating, the circuit board sends control signals to the stator, causing it to generate an alternating magnetic field. This causes the rotor to rotate, which in turn drives the shaft and impeller to rotate. The rotating impeller then transports media such as water. During operation, the electric pump's circuit board generates heat, leading to a temperature increase that can reduce the reliability of the components within the circuit board.

[0003] In related technologies, electric pumps have cooling channels located between the circuit board and the drive assembly. Water flows through the cooling channels to cool the circuit board and the drive assembly. This results in components closer to the cooling channels having lower temperatures and components farther away having higher temperatures, leading to uneven heat dissipation of the components on the circuit board and reducing the reliability of the components' operation. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, the following technical solutions are provided:

[0005] An electric pump includes a drive assembly, an impeller, a housing, and an electrical control component. The housing has a first chamber, a second chamber, a first inlet, and a first outlet, the second chamber communicating with both the first inlet and the first outlet. At least a portion of the electrical control component is located in the first chamber. The drive assembly is configured to drive the impeller to rotate, the impeller being at least partially located in the second chamber, and the impeller is configured to drive fluid from the first inlet into the second chamber and out of the first outlet. The electric pump has a first cooling section, at least a portion of which is located within the first chamber, the first chamber being filled with a flowable heat exchange medium capable of exchanging heat with both the electrical control component and the first cooling section.

[0006] Since both the electronic control component and the first cooling section are at least partially located within the first chamber, and the heat exchange medium in the first chamber can exchange heat with both the electronic control component and the first cooling section respectively, when the electronic control component heats up, causing a temperature difference in different areas of the first chamber, this temperature difference can promote fluid flow within the first chamber, thereby facilitating heat exchange between the fluid and the electronic control component and the first cooling section respectively. This helps to improve the uniformity of heat dissipation for the relevant components on the circuit board. Attached Figure Description

[0007] Figure 1This application provides schematic diagrams of the structure of an electric pump for some embodiments.

[0008] Figure 2 A structural cross-sectional view of a first type of electric pump provided for some embodiments of this application;

[0009] Figure 3 A structural cross-sectional view of a second electric pump provided in some embodiments of this application;

[0010] Figure 4 A structural cross-sectional view of a third type of electric pump provided in some embodiments of this application;

[0011] Figure 5 A structural cross-sectional view of a fourth electric pump provided in some embodiments of this application;

[0012] Figure 6 A structural cross-sectional view of a fifth electric pump provided in some embodiments of this application;

[0013] Figure 7 This is a schematic diagram of the structure of the first cover of a fifth type of electric pump provided in some embodiments of this application;

[0014] Figure 8 for Figure 2 Sectional view of AA;

[0015] Figure 9 for Figure 4 A magnified view of a section at point B in the middle;

[0016] Figure 10 for Figure 4 A magnified view of a section at point C;

[0017] Figure 11 for Figure 5 A magnified view of a section at point D;

[0018] Figure 12 for Figure 5 A magnified view of a section at point E in the middle.

[0019] Figure label:

[0020] 100-Electric pump; 100A-Inlet pipe; 100B-Outlet pipe; 100C-First connecting pipe; 100D-Second connecting pipe; 10-Drive assembly; 20-Impeller; 30-Housing; 301-First chamber; 301A-First gap; 301B-Second gap; 302-Second chamber; 302A-First area; 302B-Second area; 302C-First inlet; 302D-First outlet; 31-Main body; 31A-Inlet channel; 31B-Outlet channel; 311-First wall; 312-Safe Cavity; 32-First cover; 323-First body; 323A-End wall; 323B-Flanged edge; 324-Support; 324A-Connecting channel; 33-Second cover; 40-Electrical control components; 41-Circuit board; 42-Heating element; 50-Second cooling section; 51-Second water cooling channel; 52-First interface section; 53-Second interface section; 60-First cooling section; 60A-Through hole; 61-First water cooling channel; 62-Third interface section; 63-Fourth interface section; X-Axial direction of electric pump; W-Rotation direction of impeller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the specific embodiments are further described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0022] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the electric pump 100 provided in some embodiments of this application. Figure 2 This is a structural cross-sectional view of a first electric pump 100 provided for some embodiments of this application. According to some embodiments of this application, an electric pump 100 includes a drive assembly 10, an impeller 20, a housing 30, and an electrical control component 40. The housing 30 has a first chamber 301, a second chamber 302, a first inlet 302C, and a first outlet 302D, with the second chamber 302 communicating with both the first inlet 302C and the first outlet 302D. At least a portion of the electrical control component 40 is located in the first chamber 301. The drive assembly 10 is capable of driving the impeller 20 to rotate, with at least a portion of the impeller 20 located in the second chamber 302. The impeller 20 is capable of driving fluid to enter the second chamber 302 from the first inlet 302C and exit from the first outlet 302D. The electric pump 100 has a first cooling section 60, at least a portion of which is located within a first chamber 301. The first chamber 301 is filled with a flowable heat exchange medium that can exchange heat with the electronic control component 40 and the first cooling section 60, respectively.

[0023] The drive assembly 10 is a component that drives the impeller 20 to rotate. For example, the drive assembly 10 can be a drive motor.

[0024] The impeller 20 can drive the fluid in the second chamber 302 to enter the second chamber 302 from the first inlet 302C and flow out of the second chamber 302 from the first outlet 302D by its own rotation.

[0025] The housing 30 is a shell-like structure that provides a stable mounting space and operating environment for other components of the electric pump 100. In some embodiments, the housing 30 has a second chamber 302 and a mounting cavity 312 spaced apart along the axial direction X of the electric pump, as well as a first chamber 301. At least a portion of the drive assembly 10 is located in the mounting cavity 312, and at least a portion of the impeller 20 is located in the second chamber 302 and connected to the output end of the drive assembly 10. The electrical control component 40 is located in the first chamber 301.

[0026] The first cooling section 60 is a component in the electric pump 100 used to regulate the temperature of the electronic control component 40. For example, the first cooling section 60 can be a plate-shaped component with a hollow internal structure.

[0027] Understandably, the first cooling section 60 may be provided with a flow channel for containing cooling fluid, which may be connected to the second chamber 302, or the flow channel may be connected to an external circulation device.

[0028] It should be noted that the electric pump 100 provided in this application is used for fluid transportation, particularly for automotive thermal management systems, to transport coolant and other fluids within the vehicle. During the transportation process, the electronic control components 40 of the electric pump 100 (such as the circuit board 41 and electronic components such as chips and capacitors mounted on the circuit board 41) easily generate heat. Since the electric pump 100 is relatively small when used in automobiles, and the environment inside the vehicle is not conducive to heat dissipation, related technologies have achieved cooling by providing a cooling channel between the circuit board 41 of the electronic control component 40 and the drive assembly 10, and by providing cooling fluid within the cooling channel. However, this can lead to uneven heat dissipation of the components on the circuit board 41, and may cause uneven expansion on both sides of the circuit board 41, potentially leading to warping. This, in turn, is detrimental to the stable connection between the electronic components such as chips and capacitors on the circuit board 41 and the circuit board 41 itself.

[0029] The heat exchange medium is a flowable fluid with a certain insulating ability. For example, the heat exchange medium can be a gas or a liquid.

[0030] In some embodiments, the heat exchange medium may be air or an inert gas. In other embodiments, the heat exchange medium may be a perfluoropolyether (PFPE) fluid, a synthetic oil, or a mineral oil-based fluid.

[0031] In some embodiments, a feeding mechanism (not shown) is provided on the housing 30 for adding heat exchange medium into the receiving cavity. Exemplarily, the feeding mechanism can be a unidirectional feeding nozzle, or it can be an exhaust port for venting.

[0032] In this embodiment, since both the electronic control component 40 and the first cooling unit 60 are at least partially located within the first chamber 301, and the heat exchange medium in the first chamber 301 can exchange heat with the electronic control component 40 and the first cooling unit 60 respectively, when the electronic control component 40 generates heat, causing a temperature difference in different areas of the first chamber 301, this temperature difference promotes fluid flow within the first chamber 301. This, in turn, facilitates heat exchange between the fluid and the electronic control component 40 and the first cooling unit 60, thereby improving the uniformity of heat dissipation for the relevant components in the circuit board 41. This reduces the risk of warping of the circuit board 41, thus ensuring the reliability of the operation of the relevant components within the electronic control component 40.

[0033] Please refer to Figure 2 According to some embodiments of this application, the housing 30 includes a main body 31 and a first cover 32. Along the axial direction X of the electric pump, the first cover 32 is connected to one end of the main body 31, and a first chamber 301 is located between the first cover 32 and the main body 31. Along the axial direction X of the electric pump, at least a portion of the first cooling section 60 is located between the electronic control component 40 and the first cover 32.

[0034] The main body 31 is the portion of the housing 30 used to accommodate the drive assembly 10. For example, the mounting cavity 312 is located inside the main body 31.

[0035] The first cover 32 is a cover disposed at one end of the main body 31. Exemplarily, along the axial direction X of the electric pump, at least one of the end face of the main body 31 facing the first cover 32 and the end face of the first cover 32 facing the main body 31 can be an open face. The first cover 32 and the main body 31 are interlocked to form a first chamber 301 for accommodating the electronic control component 40.

[0036] Understandably, the main body 31 and the first cover 32 are detachably connected, and a sealing structure is provided at the connection between the main body 31 and the first cover 32. For example, the sealing structure can be a sealing ring or sealant.

[0037] In some embodiments, along the axial direction X of the electric pump, the portion of the surface of the first cooling portion 60 facing the electronic control component 40 is attached to the heating element 42 of the electronic control component 40, and / or, the surface of the first cooling portion 60 facing away from the electronic control component 40 is attached to the first cover 32.

[0038] In this embodiment, by setting the housing 30 as a split structure including the main body 31 and the first cover 32, on the one hand, the processing difficulty of the first chamber 301 is simplified; on the other hand, the heat exchange medium can be replenished and the first cooling part 60 and the electrical control component 40 can be inspected by removing the first cover 32 from the main body 31.

[0039] In some embodiments, the first cooling section 60 has a recessed portion 321A. The electronic control component 40 includes a circuit board 41 and a heating element 42. The heating element 42 is disposed on one side of the circuit board 41 in the thickness direction and protrudes from the circuit board 41 in the thickness direction, with at least a portion of the heating element 42 housed within the recessed portion 321A. On one hand, this reduces the distance between the second body portion 321B and the circuit board 41 in the thickness direction of the circuit board 41, thereby shortening the heat exchange path between the cooling fluid in the first cooling section 60 and the circuit board 41. On the other hand, it increases the heat exchange area between the first cooling section 60 and the electronic control component 40, improving the heat exchange efficiency of the first cooling section 60.

[0040] Please refer to Figure 3 , Figure 3 This is a cross-sectional view of the structure of a second electric pump 100 provided for some embodiments of this application. According to some embodiments of this application, a first cooling section 60 is provided with a through hole 60A extending along its thickness direction, and a portion of the electronic control component 40 is located within the through hole 60A.

[0041] For example, the thickness direction of the first cooling section 60 is parallel to the axial direction X of the electric pump.

[0042] In some embodiments, the electronic control component 40 includes a circuit board 41 and a heating element 42. The heating element 42 is disposed on one side of the circuit board 41 in the thickness direction and protrudes from the circuit board 41 in the thickness direction. At least a portion of the heating element 42 is accommodated within a through hole 60A. On the one hand, this reduces the distance between the first cooling section 60 and the circuit board 41 in the thickness direction of the circuit board 41, thereby shortening the heat exchange path between the cooling fluid in the first cooling section 60 and the circuit board 41. On the other hand, it increases the heat exchange area between the first cooling section 60 and the electronic control component 40, thereby improving the heat exchange efficiency of the first cooling section 60.

[0043] In this embodiment, because the first cooling section 60 is provided with a through hole 60A extending along its thickness direction, the first water-cooling channel 61 needs to avoid the through hole 60A, thereby forming an avoidance portion within the first water-cooling channel 61. When the cooling fluid flows through the avoidance portion, turbulence can be generated, thereby enabling the cooling fluid within the first water-cooling channel 61 to be uniformly mixed, improving the heat exchange efficiency of the first cooling section 60.

[0044] Please refer to Figure 3According to some embodiments of this application, along the axial direction X of the electric pump, there is a first gap 301A between the first cooling part 60 and the electronic control component 40, and a second gap 301B between the first cooling part 60 and the first cover 32.

[0045] Please refer to Figure 5 and Figure 6 In some embodiments, the through hole 60A connects the first gap 301A and the second gap 301B. This facilitates the flow of the heat exchange medium between the first gap 301A and the second gap 301B, thereby enabling the heat exchange medium to enter the second gap 301B from the first gap 301A and exchange heat with the first cooling section 60, thus improving the heat exchange efficiency of the first cooling section 60.

[0046] In this embodiment, along the axial direction X of the electric pump, there is a first gap 301A between the first cooling section 60 and the electronic control component 40, and a second gap 301B between the first cooling section 60 and the first cover 32. That is, the two end faces of the first cooling section 60 in its thickness direction are exposed in the first chamber 301, which facilitates the increase of the heat exchange area between the first cooling section 60 and the heat exchange medium, and further improves the heat exchange efficiency of the first cooling section 60.

[0047] Please refer to Figure 4 and Figure 5 , Figure 4 This is a structural cross-sectional view of a third type of electric pump 100 provided in some embodiments of this application. Figure 5 This is a cross-sectional view of the structure of a fourth electric pump 100 provided in some embodiments of this application. According to some embodiments of this application, the first cover 32 includes a first body portion 323 and a support portion 324. The support portion 324 protrudes from the side of the first body portion 323 facing the electronic control component 40 and abuts against the first cooling portion 60.

[0048] The support portion 324 is a protruding structure provided on the first body portion 323 to prevent the first cooling portion 60 from moving in the direction of compressing the second gap 301B. For example, the support portion 324 may be cylindrical or prismatic.

[0049] Please refer to Figure 4 and Figure 5 The first body portion 323 includes an end wall portion 323A and a flange portion 323B. Along the axial direction X of the electric pump, the end wall portion 323A and the circuit board 41 are located on opposite sides of the first cooling portion 60, and a second gap 301B is formed between the first cooling portion 60 and the end wall portion 323A. The flange portion 323B is wrapped around the outer periphery of the end wall portion 323A, and one end of the flange portion 323B away from the end wall portion 323A is connected to the body portion 31. The support portion 324 protrudes from the surface of the end wall portion 323A facing the first cooling portion 60.

[0050] For example, the first body portion 323 may be a plurality of portions arranged at circumferential intervals along the electric pump 100.

[0051] In this embodiment, by providing the support portion 324, the first body portion 323 and the first cooling portion 60 can be restricted from getting close to each other, so as to facilitate the flow of the heat exchange medium in the second gap 301B. At the same time, when the heat exchange medium flows through the support portion 324, turbulence can be generated, so that the heat exchange medium can be mixed more uniformly in the second gap 301B.

[0052] Please refer to Figure 6 and Figure 7 , Figure 6 This is a structural cross-sectional view of a fifth electric pump 100 provided in some embodiments of this application. Figure 7 This is a schematic diagram of the structure of the first cover 32 of a fifth type of electric pump 100 provided in some embodiments of this application. According to some embodiments of this application, at least two support portions 324 are provided, and at least two support portions 324 are spaced apart along the periphery of the first body portion 323. A connecting channel 324A is formed between two adjacent support portions 324. A first gap 301A communicates with the connecting channel 324A, and the connecting channel 324A communicates with the second gap 301B.

[0053] In some embodiments, the inner diameter of the flange portion 323B is larger than the outer diameter of the first cooling portion 60, and the support portion 324 protrudes from the inner peripheral wall of the flange portion 323B. On the projection plane perpendicular to the axial direction X of the electric pump, the orthographic projection of the support portion 324 partially overlaps with the orthographic projection of the first cooling portion 60.

[0054] In this embodiment, by arranging multiple support portions 324 at intervals along the periphery of the first body portion 323, the first cooling portion 60 is uniformly supported, reducing the risk of the first cooling portion 60 tipping over. Simultaneously, a connecting channel 324A is formed between adjacent support portions 324, improving the flow of the heat exchange medium between the first gap 301A and the second gap 301B. This further enhances the heat exchange efficiency of the first cooling portion 60.

[0055] Please refer to Figures 2-7 According to some embodiments of this application, the electric pump 100 has a second cooling section 50, at least a portion of the first cooling section 60 is located on one side of the electronic control component 40, and at least a portion of the second cooling section 50 is located on the other side of the electronic control component 40.

[0056] The second cooling section 50 is a component in the electric pump 100 used to regulate the temperature of the electronic control component 40. Exemplarily, at least one of the second cooling section 50 and the first cooling section 60 may be provided with a flow channel for containing cooling fluid, which may communicate with the second chamber 302, or the flow channel may communicate with an external circulation device.

[0057] In this embodiment, since at least a portion of the second cooling section 50 is located on one side of the electronic control component 40 and at least a portion of the first cooling section 60 is located on the other side of the electronic control component 40, the electronic control component 40 can be cooled from both sides. This improves the cooling effect of the electronic control component 40 and the uniformity of heat dissipation, reduces the risk of warping of the circuit board 41, and ensures the reliability of the operation of related components in the electronic control component 40.

[0058] Please refer to Figures 2-7 According to some embodiments of this application, the first cooling section 60 has a first water-cooled flow channel 61 inside. The inlet of the first water-cooled flow channel 61 communicates with the first region 302A of the second chamber 302, and the outlet of the first water-cooled flow channel 61 communicates with the second region 302B of the second chamber 302. The second cooling section 50 has a second water-cooled flow channel 51 inside. The inlet of the second water-cooled flow channel 51 communicates with the first region 302A of the second chamber 302, and the outlet of the second water-cooled flow channel 51 communicates with the second region 302B of the second chamber 302. Along the flow path direction of the second chamber 302, the first region 302A is closer to the first outlet 302D than the second region 302B.

[0059] The second water-cooling channel 51 is a channel inside the second cooling section 50 for containing cooling fluid. For example, the second water-cooling channel 51 can be a channel structure that meanders inside the second cooling section 50, or the second water-cooling channel 51 can be a cavity structure that is disposed inside the second cooling section 50.

[0060] The first water-cooling channel 61 is a channel inside the first cooling section 60 for containing cooling fluid. For example, the first water-cooling channel 61 can be a channel structure that meanders inside the first cooling section 60, or the first water-cooling channel 61 can be a cavity structure that is disposed inside the first cooling section 60.

[0061] "The inlet of the second water-cooled flow channel 51 is connected to the first region 302A of the second chamber 302" means that the cooling fluid of the first region 302A can enter the second water-cooled flow channel 51 through the inlet of the second water-cooled flow channel 51.

[0062] "The outlet of the second water-cooled flow channel 51 is connected to the second region 302B of the second chamber 302" means that the cooling fluid in the second water-cooled flow channel 51 can enter the second region 302B through the outlet of the second water-cooled flow channel 51.

[0063] "The inlet of the first water-cooled flow channel 61 is connected to the first region 302A of the second chamber 302" means that the cooling fluid of the first region 302A can enter the first water-cooled flow channel 61 through the inlet of the first water-cooled flow channel 61.

[0064] "The outlet of the first water-cooled flow channel 61 is connected to the second region 302B of the second chamber 302" means that the cooling fluid in the first water-cooled flow channel 61 can enter the second region 302B through the outlet of the first water-cooled flow channel 61.

[0065] Understandably, since the inlet of the second water-cooled channel 51 and the inlet of the first water-cooled channel 61 are both connected to the first region 302A of the cavity, the temperature of the cooling medium entering the second water-cooled channel 51 and the first water-cooled channel 61 is similar. Thus, during the cooling process of the electronic control component 40 by the second cooling section 50 and the first cooling section 60, the uniformity of heat dissipation of the electronic control component 40 is further improved, and the risk of warping of the circuit board 41 is reduced, thereby ensuring the reliability of the operation of the relevant components in the electronic control component 40.

[0066] In this embodiment, along the flow path direction of the second chamber 302, the first region 302A is closer to the first outlet 302D than the second region 302B. That is, when the impeller 20 rotates, the pressure of the fluid in the first region 302A is greater than the pressure in the second region 302B. This facilitates the flow of cooling fluid from the first region 302A to the second water-cooling channel 51 and then to the second region 302B by the pressure difference within the second chamber 302. It also allows the cooling fluid to flow from the first region 302A to the first water-cooling channel 61 and then to the second region 302B. Compared to the case of an external cooling fluid circulation mechanism, this helps to reduce the structural complexity of the electric pump 100 and reduce its volume, thus facilitating the installation of the electric pump 100 in automobiles.

[0067] Please refer to Figure 2 and Figure 8 , Figure 8 for Figure 2 A cross-sectional view of AA. According to some embodiments of this application, the first region 302A and the second region 302B are both located on the outer periphery of the impeller 20, and the peripheral wall of the housing 30 has a first outlet 302D. Along the rotation direction W of the impeller, the first region 302A is located between the second region 302B and the first outlet 302D.

[0068] In this embodiment, the first region 302A and the second region 302B are disposed on the outer periphery of the impeller 20 and along the rotation direction W of the impeller, such that the first region 302A is located between the second region 302B and the first outlet 302D, so that along the flow path direction of the second chamber 302, the first region 302A is closer to the first outlet 302D than the second region 302B. The structure is simple and easy to implement.

[0069] Please refer to Figures 2-7According to some embodiments of this application, the housing 30 includes a main body 31 and a second cover 33. Along the axial direction X of the electric pump, the second cover 33 is connected to the other end of the main body 31, and the second chamber 302 is located between the second cover 33 and the main body 31. Along the axial direction X of the electric pump, at least a portion of the second cooling section 50 is located on the side of the electronic control component 40 facing the impeller 20. The wall of the main body 31 is provided with a water inlet channel 31A and a water outlet channel 31B, which are located outside the drive assembly 10. The first region 302A of the second chamber 302 communicates with the water inlet channel 31A, which communicates with the inlet of the second water-cooled flow channel 51. The outlet of the second water-cooled flow channel 51 communicates with the water outlet channel 31B, which communicates with the second region 302B of the second chamber 302.

[0070] The second cover 33 is a cover disposed at one end of the main body 31. Exemplarily, along the axial direction X of the electric pump, at least one of the end face of the main body 31 facing the second cover 33 and the end face of the second cover 33 facing the main body 31 can be an open face. The second cover 33 and the main body 31 are interlocked to form a second chamber 302 for accommodating the electronic control component 40.

[0071] In some embodiments, along the axial direction X of the electric pump, the first cover 32 and the second cover 33 are located at opposite ends of the main body 31.

[0072] Please refer to Figures 2-7 In some embodiments, at least a portion of the water inlet channel 31A and water outlet channel 31B are provided on the peripheral wall corresponding to the mounting cavity 312, so as to absorb the heat of the drive assembly 10 when the cooling fluid flows through the water inlet channel 31A and water outlet channel 31B, thereby reducing the risk of the drive assembly 10 having a high temperature.

[0073] In this embodiment, the first region 302A of the second chamber 302 is connected to the water inlet channel 31A, which in turn is connected to the inlet of the second water-cooled channel 51. The outlet of the second water-cooled channel 51 is connected to the water outlet channel 31B, which in turn is connected to the second region 302B of the second chamber 302. This allows cooling fluid to flow from the first region 302A into the second water-cooled channel 51 via the water inlet channel 31A and the inlet of the second water-cooled channel 51, and then into the second region 302B via the outlet of the second water-cooled channel 51 and the outlet channel. During the flow of cooling fluid, heat from the drive assembly 10 and the electronic control component 40 can be absorbed, reducing the risk of overheating of the electronic control component 40 and the drive assembly 10.

[0074] Please refer to Figures 2-7According to some embodiments of this application, the main body 31 includes a first wall 311 along the axial direction X of the electric pump. The first wall 311 is located on the side of the electronic control component 40 facing the impeller 20, and the first wall 311 constitutes at least a portion of the second cooling section 50.

[0075] For example, the first wall 311 is the wall that separates the mounting cavity 312 and the first chamber 301.

[0076] "The first wall 311 constitutes at least a portion of the second cooling section 50" means that at least a portion of the second cooling section 50 is used to separate the drive assembly 10 and the electronic control assembly. Please refer to... Figures 2-7 In some embodiments, along the axial direction X of the electric pump, at least a portion of the second cooling section 50 is located between the wall portion of the wall portion corresponding to the first chamber 301 near the second cover 33 and the wall portion of the wall portion corresponding to the mounting cavity 312 near the first cover 32.

[0077] In this embodiment, by forming at least a portion of the first wall 311 as the second cooling section 50, the second cooling section 50 is able to cool both the drive assembly 10 and the electronic control component 40 simultaneously.

[0078] Please refer to Figures 2-7 According to some embodiments of this application, the inlet of the first water-cooled channel 61 is connected to the water inlet channel 31A, and the outlet of the first water-cooled channel 61 is connected to the water outlet channel 31B.

[0079] The inlet of the first water-cooled flow channel 61 is connected to the inlet channel 31A. That is, while connecting the inlet of the first region 302A and the second water-cooled flow channel 51 via the inlet channel 31A, the inlet of the first region 302A and the first water-cooled flow channel 61 are also connected via the inlet channel 31A. Please refer to... Figures 2-7 For example, one end of the water inlet channel 31A is connected to the first region 302A, the other end of the water inlet channel 31A is connected to the inlet of the first water-cooled flow channel 61, and the portion of the water inlet channel 31A located between the mounting cavity 312 and the first chamber 301 is connected to the inlet of the second water-cooled flow channel 51.

[0080] The outlet of the first water-cooled flow channel 61 is connected to the outlet channel 31B. That is, while connecting the outlet of the second region 302B and the outlet of the second water-cooled flow channel 51 via the outlet channel 31B, the outlet channel 31B also connects the second region 302B and the outlet of the first water-cooled flow channel 61. Please refer to... Figures 2-7 For example, one end of the water outlet channel 31B is connected to the second region 302B, and the other end of the water outlet channel 31B is connected to the outlet of the first water cooling channel 61. The portion of the water inlet channel 31A located between the mounting cavity 312 and the first chamber 301 is connected to the outlet of the second water cooling channel 51.

[0081] Please refer to Figure 4 , Figure 9 and Figure 10 , Figure 9 for Figure 4 A magnified view of a section at point B. Figure 10 for Figure 4 A partial enlarged view at point C. In some embodiments, the electric pump 100 includes a first connecting pipe 100C and a second connecting pipe 100D. A water inlet channel 31A communicates with one end of the cavity of the first connecting pipe 100C, and the other end of the cavity of the first connecting pipe 100C communicates with the inlet of the first water-cooled flow channel 61. The outlet of the first water-cooled flow channel 61 communicates with one end of the cavity of the second connecting pipe 100D, and the other end of the cavity of the second connecting pipe 100D communicates with the water outlet channel 31B.

[0082] Please refer to Figure 9 For example, one end of the water inlet channel 31A is connected to the first region 302A, the other end of the water inlet channel 31A is connected to one end of the cavity of the first connecting pipe 100C, the other end of the cavity of the first connecting pipe 100C is connected to the inlet of the first water cooling channel 61, and the portion of the water inlet channel 31A located between the mounting cavity 312 and the first chamber 301 is connected to the inlet of the second water cooling channel 51.

[0083] Please refer to Figure 10 For example, one end of the water outlet channel 31B is connected to the second region 302B, the other end of the water outlet channel 31B is connected to one end of the cavity of the second connecting pipe 100D, the other end of the cavity of the second connecting pipe 100D is connected to the outlet of the first water cooling channel 61, and the portion of the water inlet channel 31A located between the mounting cavity 312 and the first chamber 301 is connected to the outlet of the second water cooling channel 51.

[0084] In this embodiment, by connecting the inlet of the first water-cooled channel 61 to the water inlet channel 31A and the outlet of the first water-cooled channel 61 to the water outlet channel 31B, on the one hand, the temperature of the cooling fluid entering the second water-cooled channel 51 is made similar to the temperature of the cooling fluid entering the first water-cooled channel 61, thereby improving the uniformity of heat dissipation for the electronic control component 40 and further ensuring the reliability of the operation of related components within the electronic control component 40. On the other hand, it reduces the number of connecting pipes within the electric pump 100, simplifies the structure of the electric pump 100, and facilitates the installation and assembly of the electric pump 100.

[0085] Please refer to Figure 5 , Figure 11 and Figure 12 , Figure 11 for Figure 5 A magnified view of a section at point D. Figure 12 for Figure 5A partial enlarged view at point E. According to some embodiments of this application, the second cooling section 50 has a first interface section 52 and a second interface section 53. A portion of the water inlet channel 31A is located within the first interface section 52, and a portion of the water outlet channel 31B is located within the second interface section 53. The first cooling section 60 has a third interface section 62 and a fourth interface section 63. The inlet of the first water-cooled flow channel 61 is located at the third interface section 62, and the outlet of the first water-cooled flow channel 61 is located at the fourth interface section 63. The first interface section 52 is sealed to the third interface section 62, and the second interface section 53 is sealed to the fourth interface section 63.

[0086] In some embodiments, the first interface portion 52 is inserted into the third interface portion 62, and the second interface portion 53 is inserted into the fourth interface portion 63.

[0087] In other embodiments, the third interface portion 62 is inserted into the first interface portion 52, and the fourth interface portion 63 is inserted into the second interface portion 53.

[0088] In this embodiment, the first interface 52 and the third interface 62 are sealed together, and the second interface 53 and the fourth interface 63 are sealed together to connect the first water-cooled channel 61 and the water inlet channel 31A, and to connect the first water-cooled channel 61 and the water outlet channel 31B. At the same time, the first interface 52 fixes the third interface 62, and the second interface 53 fixes the fourth interface 63. This reduces the risk of the connection between the first water-cooled channel 61 and the water inlet channel 31A, and the connection between the first water-cooled channel 61 and the water outlet channel 31B, due to external vibration, and improves the reliability of the electric pump 100.

[0089] The above examples illustrate the principles and implementation methods of this application. The descriptions of the embodiments are merely for the purpose of helping to understand the technical solutions and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. An electric pump (100), characterized in that, It includes a drive assembly (10), an impeller (20), a housing (30), and an electrical control component (40). The housing (30) has a first chamber (301), a second chamber (302), a first inlet (302C), and a first outlet (302D). The second chamber (302) is connected to the first inlet (302C) and the first outlet (302D), respectively. At least a portion of the electronic control component (40) is located in the first chamber (301). The drive assembly (10) is capable of driving the impeller (20) to rotate, the impeller (20) being at least partially located in the second chamber (302), and the impeller (20) is capable of driving fluid to enter the second chamber (302) from the first inlet (302C) and flow out from the first outlet (302D); The electric pump (100) has a first cooling section (60), at least a portion of which is located within a first chamber (301) filled with a flowable heat exchange medium capable of exchanging heat with the electronic control component (40) and the first cooling section (60).

2. The electric pump (100) according to claim 1, characterized in that, The housing (30) includes a main body (31) and a first cover (32) along the axial direction (X) of the electric pump. The first cover (32) is connected to one end of the main body (31), and the first chamber (301) is located between the first cover (32) and the main body (31). Along the axial direction (X) of the electric pump, at least a portion of the first cooling section (60) is located between the electronic control component (40) and the first cover (32).

3. The electric pump (100) according to claim 2, characterized in that, The first cooling section (60) is provided with a through hole (60A) extending through its thickness direction, and part of the electronic control component (40) is located in the through hole (60A).

4. The electric pump (100) according to claim 2 or 3, characterized in that, Along the axial direction (X) of the electric pump, there is a first gap (301A) between the first cooling part (60) and the electronic control component (40), and a second gap (301B) between the first cooling part (60) and the first cover (32).

5. The electric pump (100) according to claim 4, characterized in that, The first cover (32) includes a first body part (323) and a support part (324). The support part (324) protrudes from the side of the first body part (323) facing the electronic control component (40) and abuts against the first cooling part (60).

6. The electric pump (100) according to claim 5, characterized in that, At least two support portions (324) are provided, and at least two support portions (324) are provided at intervals along the periphery of the first body portion (323). A connecting channel (324A) is formed between two adjacent support portions (324). The first gap (301A) communicates with the connecting channel (324A), and the connecting channel (324A) communicates with the second gap (301B).

7. The electric pump (100) according to any one of claims 1-6, characterized in that, The electric pump (100) has a second cooling section (50), at least a portion of the first cooling section (60) is located on one side of the electronic control component (40), and at least a portion of the second cooling section (50) is located on the other side of the electronic control component (40).

8. The electric pump (100) according to claim 7, characterized in that, The first cooling section (60) has a first water cooling channel (61) inside. The inlet of the first water cooling channel (61) is connected to the first region (302A) of the second chamber (302), and the outlet of the first water cooling channel (61) is connected to the second region (302B) of the second chamber (302). The interior of the second cooling section (50) has a second water cooling channel (51), the inlet of the second water cooling channel (51) is connected to the first region (302A) of the second chamber (302), and the outlet of the second water cooling channel (51) is connected to the second region (302B) of the second chamber (302); Along the flow path direction of the second chamber (302), the first region (302A) is closer to the first outlet (302D) than the second region (302B).

9. The electric pump (100) according to claim 8, characterized in that, The first region (302A) and the second region (302B) are both located on the outer periphery of the impeller (20), and the casing (30) has the first outlet (302D) on its peripheral wall. Along the rotation direction (W) of the impeller, the first region (302A) is located between the second region (302B) and the first outlet (302D).

10. The electric pump (100) according to claim 8 or 9, characterized in that, The housing (30) includes a main body (31) and a second cover (33) along the axial direction (X) of the electric pump. The second cover (33) is connected to the other end of the main body (31), and the second chamber (302) is located between the second cover (33) and the main body (31). Along the axial direction (X) of the electric pump, at least a portion of the second cooling section (50) is located on the side of the electronic control component (40) facing the impeller (20); The wall of the main body (31) is provided with a water inlet channel (31A) and a water outlet channel (31B), which are located outside the drive assembly (10); the first region (302A) of the second chamber (302) is connected to the water inlet channel (31A), and the water inlet channel (31A) is connected to the inlet of the second water-cooled channel (51); the outlet of the second water-cooled channel (51) is connected to the water outlet channel (31B), and the water outlet channel (31B) is connected to the second region (302B) of the second chamber (302).

11. The electric pump (100) according to claim 10, characterized in that, The main body (31) includes a first wall (311) along the axial direction (X) of the electric pump. The first wall (311) is located on the side of the electronic control component (40) facing the impeller (20). The first wall (311) constitutes at least a portion of the second cooling section (50).

12. The electric pump (100) according to claim 11, characterized in that, The inlet of the first water-cooled channel (61) is connected to the water inlet channel (31A), and the outlet of the first water-cooled channel (61) is connected to the water outlet channel (31B).

13. The electric pump (100) according to claim 12, characterized in that, The second cooling section (50) has a first interface section (52) and a second interface section (53), a portion of the water inlet channel (31A) is located in the first interface section (52), and a portion of the water outlet channel (31B) is located in the second interface section (53); The first cooling section (60) has a third interface section (62) and a fourth interface section (63), the inlet of the first water cooling channel (61) is located at the third interface section (62), and the outlet of the first water cooling channel (61) is located at the fourth interface section (63). The first interface (52) is sealed to the third interface (62), and the second interface (53) is sealed to the fourth interface (63).

Images