Electronic water pump, thermal management system, and vehicle

Abstract

The utility model discloses an electronic water pump, heat management system and vehicle, electronic water pump includes: casing, the outer circumferential surface of casing includes connecting face, the connecting face is equipped with the connecting portion that projects outward along the radial, the connecting portion is used for the mounting fixed of electronic water pump at the installation site, the casing includes the matching part, the matching part is located the side of connecting portion's to the installation site, wherein, the size of connecting portion along the axial direction of electronic water pump is d, the size of matching part along the axial direction of electronic water pump is h, d / h is greater than or equal to 0.087 and less than or equal to 0.527. According to the utility model embodiment's electronic water pump, the rigidity of connecting portion has been improved, thereby effectively reduced the vibration transmission rate from the casing of electronic water pump to the installation site, reduces the vibration and radiation noise of installation site, is favorable to the improvement of the NVH performance of the system of using electronic water pump.

Description

Technical Field

[0001] This utility model relates to the field of electronic water pump technology, and more specifically, to an electronic water pump, a thermal management system, and a vehicle. Background Technology

[0002] With the rapid development of the new energy vehicle industry, electronic water pumps are gradually replacing traditional mechanical water pumps. In related technologies, the vibration of the electronic water pump body is transmitted to the components used to install the electronic water pump. For example, when the electronic water pump is assembled into a thermal management integrated module to participate in the vehicle's cooling circulation system, the vibration of the electronic water pump body is transmitted to the thermal management integrated module, thereby causing the integrated module to vibrate and radiate noise. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide an electronic water pump that effectively reduces the vibration transmission rate from the pump housing to the mounting point.

[0004] This utility model also proposes a thermal management system having the above-mentioned electronic water pump.

[0005] This utility model also proposes a vehicle having the above-mentioned thermal management system.

[0006] An electronic water pump according to an embodiment of the present invention includes: a housing, the outer peripheral surface of the housing including a connecting surface, the connecting surface having a connecting portion protruding radially outward, the connecting portion being used for mounting and fixing the electronic water pump at a mounting point, the housing including a mating portion, the mating portion being located on the side of the connecting portion facing the mounting point, wherein the dimension of the connecting portion along the axial direction of the electronic water pump is d, the dimension of the mating portion along the axial direction of the electronic water pump is h, and d / h is greater than or equal to 0.087 and less than or equal to 0.527.

[0007] According to the embodiment of this utility model, the electronic water pump is installed and fixed through the connecting part, and the d / h is greater than or equal to 0.087 and less than or equal to 0.527, which improves the rigidity of the connecting part, thereby effectively reducing the vibration transmission rate from the housing of the electronic water pump to the mounting point, reducing the vibration and radiated noise of the mounting point, and helping to improve the NVH performance of the system using the electronic water pump.

[0008] In addition, the electronic water pump according to the above embodiments of this utility model may also have the following additional technical features:

[0009] According to some embodiments of the present invention, there are multiple connecting portions, and the multiple connecting portions are arranged at circumferential intervals along the connecting surface.

[0010] According to some embodiments of the present invention, the diameter of the connecting surface is D, the width of the connecting part along the circumferential direction of the connecting surface is W, and W / (πD) is greater than or equal to 0.015 and less than or equal to 0.064.

[0011] According to some embodiments of the present invention, a reinforcing rib is connected between the connecting part and the housing.

[0012] According to some embodiments of the present invention, the reinforcing rib includes a first reinforcing rib, which connects the circumferential side of the connecting portion and the connecting surface.

[0013] According to some embodiments of the present invention, the height of the first reinforcing rib protruding from the connecting surface increases in the direction close to the connecting portion, wherein the surface of the first reinforcing rib facing away from the connecting surface is a plane; or, the surface of the first reinforcing rib facing away from the connecting surface is an arc surface, and the surfaces of the connecting surface and the connecting portion are smoothly connected to the arc surface.

[0014] According to some embodiments of the present invention, the reinforcing rib includes a second reinforcing rib, which connects the axial side of the connecting portion and the housing.

[0015] According to some embodiments of the present invention, a vibration damping pad is provided on the side of the connecting portion facing the mounting point.

[0016] According to some embodiments of the present invention, the housing includes a casing and a pump casing. The casing defines a mounting cavity for accommodating a rotor assembly. The pump casing covers one axial end of the casing. The pump casing is connected to the casing and cooperates to define a pump cavity for accommodating an impeller assembly. The connecting portion is located in the casing. Alternatively, the connecting portion includes a first portion and a second portion. The first portion is located in the casing, and the second portion is located in the pump casing. The first portion and the second portion are connected.

[0017] According to some embodiments of the present invention, the connecting part is provided with an axially penetrating mounting hole, which is used to insert fasteners.

[0018] The thermal management system according to an embodiment of the present invention includes an integrated module and an electronic water pump according to an embodiment of the present invention. The connecting part is connected to the integrated module, and the mating part is located on the side of the connecting part facing the integrated module and mating with the integrated module.

[0019] The vehicle according to an embodiment of the present invention includes a thermal management system according to an embodiment of the present invention.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the structure of a thermal management system according to some embodiments of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the electronic water pump according to the first embodiment of the present invention;

[0024] Figure 3 This is a front view of the electronic water pump according to the first embodiment of the present invention;

[0025] Figure 4 This is a graph showing the relationship between d / h and vibration transmissibility η of the electronic water pump according to an embodiment of the present invention;

[0026] Figure 5 This is a graph showing the relationship between W / (πD) and vibration transmissibility η of the electronic water pump according to an embodiment of the present invention;

[0027] Figure 6 This is a top view of the electronic water pump according to the second embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the electronic water pump according to the second embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the electronic water pump according to the third embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure of the electronic water pump according to the fourth embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the structure of the electronic water pump according to the fifth embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the structure of the electronic water pump according to the sixth embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the structure of the electronic water pump according to the seventh embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of a vehicle according to an embodiment of the present utility model.

[0035] Figure label:

[0036] Thermal management system 1000; Vehicles 2000;

[0037] 100 electronic water pumps; 200 integrated modules;

[0038] 10 housing; 101 connecting surface; 11 mating part; 12 housing; 13 pump housing; 131 liquid inlet;

[0039] Connecting part 20; Mounting hole 201; First part 21; Second part 22;

[0040] Reinforcing rib 30; First reinforcing rib 31; Second reinforcing rib 32. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "first feature above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "first feature above", "above" and "over" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0044] With the rapid development of the new energy vehicle industry, electronic water pumps are gradually replacing traditional mechanical water pumps. In related technologies, the vibration of the electronic water pump during operation is transmitted to the components used to mount it. For example, in a vehicle's thermal management system, the electronic water pump participates in the vehicle's cooling circulation system by being assembled into the thermal management integrated module. This causes the vibration of the electronic water pump to be transmitted to the thermal management integrated module, thereby causing the thermal management integrated module to vibrate and radiate noise.

[0045] Therefore, it is necessary to design an assembly structure that can reduce the vibration transmission rate from the electric water pump to the installation site in order to reduce system noise.

[0046] Based on this, this application proposes an electronic water pump 100, which is installed at the mounting point via a connecting part 20. By increasing the rigidity of the connecting part 20, the vibration transmission rate from the electronic water pump 100 to the mounting point is reduced, thereby reducing the vibration and radiated noise of the system and improving the NVH performance of the system.

[0047] The electronic water pump 100 and thermal management system 1000 according to embodiments of the present invention are described below with reference to the accompanying drawings.

[0048] Reference Figure 1 As shown, the thermal management system 1000 according to an embodiment of the present invention includes an integrated module 200 and an electronic water pump 100 according to an embodiment of the present invention.

[0049] Reference Figures 2-3 As shown, the electronic water pump 100 according to an embodiment of the present invention may include: a housing 10, the outer peripheral surface of the housing 10 including a connecting surface 101, the connecting surface 101 having a connecting portion 20 protruding radially outward, the connecting portion 20 being used for mounting and fixing the electronic water pump 100 at a mounting point. The housing 10 includes a mating portion 11, the mating portion 11 being located on the side of the connecting portion 20 facing the mounting point. The dimension of the connecting portion 20 along the axial direction of the electronic water pump 100 is d, the dimension of the mating portion 11 along the axial direction of the electronic water pump 100 is h, and d / h is greater than or equal to 0.087 and less than or equal to 0.527, i.e., 0.087 ≤ d / h ≤ 0.527. For example, in some specific embodiments, d / h can be 0.09, 0.1, 0.2, 0.3, 0.4, and 0.5, etc.

[0050] Here, the mounting point refers to the part in a system employing the electronic water pump 100 that is connected to the connection portion 20 of the electronic water pump 100. The mating portion 11 refers to the part in a system employing the electronic water pump 100 that is used to connect the electronic water pump 100 to the system via piping.

[0051] For example, in the thermal management system 1000, the connecting part 20 of the electric water pump 100 is connected to the integrated module 200, and the integrated module 200 forms the mounting point for the electric water pump 100. The mating part 11 is located on the side of the connecting part 20 facing the integrated module 200 and mates with the integrated module 200. In some specific embodiments, the integrated module 200 may include a water circuit board, valves, heat exchangers, compressors, etc.; the mating part 11 may be provided with an inlet 131 and an outlet. The mating part 11 can be plugged into the water circuit board of the integrated module 200 and connected and fixed to the water circuit board through the connecting part 20, so as to realize the reliable connection between the inlet 131 and the outlet and the pipeline on the integrated module 200, and realize the integration of the electric water pump 100 on the integrated module 200.

[0052] The following description uses the example of an electronic water pump 100 being installed and fixed in the integrated module 200 of a thermal management system 1000. Based on the following description, it will be understood by those skilled in the art that the electronic water pump 100 can be installed and fixed in other mounting locations.

[0053] For the assembly structure of the electric water pump 100, parameters such as the dimension h of the mating part 11 along the axial direction of the electric water pump 100 all affect the strength requirements of the assembly structure. Among them, the dimension h of the mating part 11 along the axial direction of the electric water pump 100 has a particularly significant impact. The dimension of the connecting part 20 along the axial direction of the electric water pump 100 mainly affects whether the strength of the assembly structure of the electric water pump 100 meets the requirements. The larger the dimension of the connecting part 20 along the axial direction of the electric water pump 100, the higher the stiffness of the connecting part 20, and the higher the strength of the resulting assembly structure. Furthermore, the higher the stiffness of the connecting part 20 of the electric water pump 100, the lower the transmission rate of the body vibration of the electric water pump 100 during operation to the mounting points such as the integrated module 200, and the less likely it is to cause vibration and radiated noise in the integrated module 200.

[0054] in addition, Figure 4 The diagram shows the relationship between the d / h of the electronic water pump 100 and the vibration transmissibility η, where the vibration transmissibility η is the ratio of the axial vibration at the vibration pickup point on the integrated module 200 to the axial vibration at the vibration pickup point on the housing 10. Combined with... Figure 4 It can be seen that when the axial thickness of the mating part 11 and the axial thickness of the connecting part 20 satisfy 0.087≤d / h≤0.527, the vibration transmission rate η of the electronic water pump 100 is relatively small, which effectively reduces the vibration transmission rate from the housing 10 of the electronic water pump 100 to the integrated module 200, thereby reducing the vibration and radiated noise of the integrated module 200 and improving the NVH performance of the thermal management system 1000.

[0055] Furthermore, the d / h ratio is not too large, which would cause the axial dimension of the connecting surface 101 used to set the connecting part 20 to be too large. This helps to reduce the overall axial dimension of the electronic water pump 100 and improve the overall structural compactness of the electronic water pump 100.

[0056] According to the embodiment of the present invention, the electronic water pump 100 is installed and fixed through the connecting part 20, and the d / h is greater than or equal to 0.087 and less than or equal to 0.527, which improves the rigidity of the connecting part 20. This effectively reduces the vibration transmission rate from the housing 10 of the electronic water pump 100 to the mounting point, reduces the vibration and radiated noise of the mounting point, and helps to improve the NVH performance of the system using the electronic water pump 100.

[0057] Since the electronic water pump 100 according to the present invention has the above-mentioned beneficial technical effects, the thermal management system 1000 according to the present invention is installed and fixed through the connecting part 20, and the d / h is greater than or equal to 0.087 and less than or equal to 0.527, thereby improving the rigidity of the connecting part 20, effectively reducing the vibration transmission rate from the housing 10 of the electronic water pump 100 to the integrated module 200, reducing the vibration and radiated noise of the integrated module 200, and improving the NVH performance of the thermal management system 1000.

[0058] In some embodiments, the connection portion 20 may extend circumferentially along the electric water pump 100 in the form of an annular flange.

[0059] In other embodiments, such as Figure 2 and Figure 3 As shown, there can be multiple connecting parts 20, which are spaced apart circumferentially along the connecting surface 101. By providing multiple connecting parts 20, which are spaced apart circumferentially, the electric water pump 100 can be installed and fixed at multiple points circumferentially, improving the reliability of installation and fixing. Furthermore, by reducing the size of each connecting part 20 circumferentially, the rigidity of the connecting part 20 and the strength of the assembly structure are satisfied, while the volume of the connecting part 20 is reduced, thereby lowering the cost and the weight of the electric water pump 100.

[0060] In some embodiments, such as Figure 5 and Figure 6 As shown, the diameter of the connecting surface 101 is D, and the width of the connecting portion 20 along the circumference of the connecting surface 101 is W. W / (πD) is greater than or equal to 0.015 and less than or equal to 0.064, that is, 0.015≤W / (πD)≤0.064. For example, in some specific embodiments, W / (πD) can be 0.02, 0.03, 0.04, 0.05, and 0.06, etc.

[0061] The greater the circumferential width of the connecting portion 20, the higher its rigidity, which is more conducive to reducing vibration transmission. Additionally, Figure 5 The figure shown is a graph showing the relationship between W / (πD) and vibration transmissibility of the electronic water pump 100. Figure 5 It can be seen that when the circumferential width of the connecting part 20 and the diameter of the connecting surface 101 satisfy 0.015≤W / (πD)≤0.064, the vibration transmission rate η of the electronic water pump 100 is smaller, which effectively reduces the vibration transmission rate from the housing 10 of the electronic water pump 100 to the integrated module 200, thereby reducing the vibration and radiated noise of the integrated module 200, improving the NVH performance of the thermal management system 1000, and ensuring that the electronic water pump 100 can be effectively installed on the integrated module 200.

[0062] It should be noted that the width of the connecting portion 20 along the circumferential direction of the connecting surface 101 refers to the dimension of the connecting portion 20 at its maximum circumferential position. For example, the radial outer end of the connecting portion 20 is as follows: Figure 6 In the embodiment shown as an arc surface, the diameter of the arc surface is the width of the connecting portion 20; for example, in the embodiment where the radial outer end of the connecting portion 20 is a plane and the plane is directly connected to the two side surfaces, the distance between the two ends of the plane in the circumferential direction is the width of the connecting portion 20; for example, in the embodiment where the radial outer end of the connecting portion 20 is a plane and the plane is connected to the two side surfaces by a chamfer, the distance between the ends of the two side surfaces connected to the chamfer is the width of the connecting portion 20.

[0063] According to some embodiments of this utility model, such as Figures 6-7 As shown, a reinforcing rib 30 connects the connecting part 20 to the housing 10. The reinforcing rib 30 can further improve the rigidity of the connecting part 20, thereby further reducing the vibration transmission rate from the electronic water pump 100 to the integrated module 200.

[0064] Furthermore, the location and structure of the reinforcing rib 30 can be flexibly configured as needed to adjust the effect and position of improving the stiffness of the connection 20. For example, in some embodiments, such as Figures 6-8 As shown, the reinforcing rib 30 includes a first reinforcing rib 31, which connects the circumferential side of the connecting portion 20 and the connecting surface 101. The first reinforcing rib 31 can effectively improve the circumferential stiffness of the connecting portion 20, and the structure on the connecting surface 101 and the connecting portion 20 is simpler. The first reinforcing rib 31 is easier to set, and the first reinforcing rib 31 does not occupy the space on the axial side of the connecting portion 20, which helps to reduce the axial dimension of the connecting surface 101, making the axial space occupied by the housing 10 smaller and the structure more compact.

[0065] The axial thickness of the first reinforcing rib 31 can be as follows: Figures 6-8The axial thickness shown is equal to that of the connecting part 20, but it can also be less than or greater than the axial thickness of the connecting part 20, all of which are within the protection scope of this utility model.

[0066] In some embodiments, continue to refer to Figures 6-8 The height of the first reinforcing rib 31 protruding from the connecting surface 101 increases in the direction close to the connecting part 20, making the connection area between the first reinforcing rib and the connecting surface 101 larger, and the connection area between the first reinforcing rib and the connecting part 20 larger, which is beneficial to improving the stiffness enhancement effect and reducing the volume of the first reinforcing rib 31.

[0067] The surface of the first reinforcing rib 31 facing away from the connecting surface 101 can be as follows: Figure 8 The diagram shows a plane, which makes the first reinforcing rib 31 have higher structural strength and better improves the stiffness of the connection part 20. In addition, the first reinforcing rib 31 has a simple structure and is easy to process.

[0068] Alternatively, the surface of the first reinforcing rib 31 facing away from the connecting surface 101 can be as follows: Figure 6 and Figure 7 As shown, the surfaces of the connecting surface 101 and the connecting portion 20 are smoothly connected to the curved surface. This reduces stress concentration at the connection points of the connecting surface 101 and the connecting portion 20 with the first reinforcing rib 31, as well as on the first reinforcing rib 31, thereby improving the overall rigidity.

[0069] According to some embodiments of this utility model, such as Figure 9 As shown, the reinforcing rib 30 includes a second reinforcing rib 32, which connects the axial side of the connecting portion 20 and the housing 10. The second reinforcing rib 32 can provide support from the axial side of the connecting portion 20, thereby improving the axial stiffness of the connecting portion 20, reducing the axial vibration of the connecting portion 20, and further reducing the transmission of the axial vibration of the electronic water pump 100 to the integrated module 200.

[0070] In some embodiments, such as Figure 10 and Figure 11 As shown, the reinforcing rib 30 may include both a first reinforcing rib 31 and a second reinforcing rib 32, thereby simultaneously improving the circumferential stiffness and axial stiffness of the connecting part 20, so as to further reduce the vibration transmission rate.

[0071] In some embodiments of this utility model, a vibration damping pad is provided on the side of the connecting part 20 facing the mounting point. In other words, a vibration damping pad is sandwiched between the connecting part 20 and the integrated module 200. The vibration damping pad can be, but is not limited to, materials such as rubber and silicone, which can increase the vibration transmission damping from the electronic water pump 100 to the integrated module 200, thereby reducing the vibration transmission rate from the electronic water pump 100 to the integrated module 200.

[0072] According to some embodiments of this utility model, such as Figures 2-3 and Figures 6-12 As shown, the housing 10 includes a casing 12 and a pump casing 13. The casing 12 defines a mounting cavity for accommodating the rotor assembly, thus providing installation space and protection for the rotor assembly. The pump casing 13 covers one axial end of the casing 12, is connected to the casing 12, and cooperates to define a pump chamber for accommodating the impeller assembly, thus providing installation space and protection for the impeller assembly, and facilitating the impeller assembly to pump the liquid flowing through the pump chamber. Furthermore, the impeller assembly and the rotor assembly can be connected to allow the rotor assembly to drive the impeller assembly to rotate.

[0073] Here, the impeller assembly and rotor assembly can be separate parts connected together, or they can be integrated parts connected by means such as injection molding.

[0074] In some embodiments, such as Figures 1-3 and Figures 6-11 As shown, the connecting part 20 is located on the housing 12. The pump housing 13 and the housing 12 can be connected and sealed by welding or other methods, and the connecting part 20 on the housing 12 enables installation and fixation in the integrated module 200. The structure of the connecting part 20 is simpler and easier to process and assemble.

[0075] In other embodiments, such as Figure 12 As shown, the connecting portion 20 includes a first part 21 and a second part 22. The first part 21 is disposed on the housing 12, and the second part 22 is disposed on the pump housing 13. The first part 21 and the second part 22 are connected. In other words, the housing 12 and the pump housing 13 are respectively provided with structures for connection, and the two parts together constitute the connecting portion 20. That is, the axial thickness of the connecting portion 20 is equal to the sum of the axial thickness of the first part 21 and the axial thickness of the second part 22.

[0076] For example, in embodiments using fastener connections, the fasteners can be inserted through the first part 21, the second part 22, and the integrated module 200, achieving both the connection between the housing 12 and the pump housing 13, and the installation and fixation of the electronic water pump 100 on the integrated module 200. Furthermore, during the operation of the electronic water pump 100, the vibration of the housing 12 is transmitted to the pump housing 13, and then through the pump housing 13 to the integrated module 200, which helps to reduce the transmission rate of vibration from the electronic water pump 100 to the integrated module 200.

[0077] Of course, in some embodiments including the first part 21 and the second part 22, the housing 12 and the pump housing 13 can also be welded together to further improve the sealing effect between the housing 12 and the pump housing 13.

[0078] It should be noted that the outer contours of the first part 21 and the second part 22 can be as follows: Figure 12As shown, it is easier to process and assemble, and improves the coaxiality of the housing 12 and the pump housing 13; the outer contours of the first part 21 and the second part 22 can also be different, which is also within the protection scope of this utility model.

[0079] In addition, in some embodiments including the reinforcing rib 30, the reinforcing rib 30 may be provided only in the first part 21 or only in the second part 22, or a portion of the reinforcing rib 30 may be connected to the first part 21 and another portion of the reinforcing rib 30 may be connected to the second part 22.

[0080] In the embodiments of this application, the connection method between the connecting part 20 and the integrated module 200 can be flexibly set, and can be, but is not limited to, fastener connection, welding, snap-fit, etc. For example, in some embodiments, such as Figures 2-3 and Figures 6-12 As shown, the connecting part 20 is provided with a mounting hole 201 that extends through the axis, and the mounting hole 201 is used to insert a fastener. The fastener can be inserted through the mounting hole 201 and connected to the integrated module 200. The connection method is simple and easy to assemble. Furthermore, the sealing effect between the electronic water pump 100 and the integrated module 200 can be adjusted by adjusting the tightness of the fastener and the integrated module 200.

[0081] The vehicle 2000 according to an embodiment of the present invention includes a thermal management system 1000 according to an embodiment of the present invention. Since the thermal management system 1000 according to an embodiment of the present invention has the aforementioned beneficial technical effects, the vehicle 2000 according to an embodiment of the present invention achieves installation and fixation via the connecting part 20, and ensures that d / h is greater than or equal to 0.087 and less than or equal to 0.527, thereby improving the rigidity of the connecting part 20. This effectively reduces the vibration transmission rate from the housing 10 of the electric water pump 100 to the integrated module 200, reduces the vibration and radiated noise of the integrated module 200, and is beneficial to improving the NVH performance of the thermal management system 1000.

[0082] The thermal management system 1000 can be used to regulate the automotive cabin environment (temperature, humidity, etc.) and the working environment of other components. In some embodiments, the thermal management system 1000 mainly includes valves, heat exchangers, compressors, and pumps, such as an electric water pump 100 or other water pumps. The thermal management system 1000 has a circulating working medium, which can be carbon dioxide refrigerant, coolant, etc.

[0083] In this embodiment, vehicle 2000 can be a new energy vehicle. In some embodiments, the new energy vehicle can be a pure electric vehicle with an electric motor as the main driving force. In other embodiments, the new energy vehicle can also be a hybrid vehicle with both an internal combustion engine and an electric motor as the main driving force. Regarding the internal combustion engine and electric motor mentioned in the above embodiments that provide driving power for the new energy vehicle, the internal combustion engine can use gasoline, diesel, hydrogen, etc. as fuel, and the way to provide electrical energy to the electric motor can be a power battery, hydrogen fuel cell, etc., without special limitations. It should be noted that this is merely an exemplary description of the structure of new energy vehicles, etc., and is not intended to limit the scope of protection of this utility model.

[0084] The following describes in detail a specific embodiment of the thermal management system 1000 according to the present invention with reference to the accompanying drawings. It should be understood that the following description is merely illustrative and should not be construed as limiting the present invention.

[0085] like Figure 2 and Figure 3 As shown, the thermal management system 1000 includes an integrated module 200 and an electronic water pump 100 according to the first embodiment of the present invention. The housing 10 of the electronic water pump 100 includes a casing 12, a pump casing 13, and a rear cover. The pump casing 13 and the rear cover are respectively installed on both axial ends of the casing 12 and are welded and sealed to the casing 12. One axial end of the pump casing 13 is provided with a liquid inlet 131, and the other end is connected to the casing 12. The outer peripheral surface of the casing 12 includes a connecting surface 101 and is provided with a plurality of connecting portions 20. The connecting portions 20 are lifting lugs and are provided with axially penetrating mounting holes 201. The portion of the housing 10 located on the side of the connecting portion 20 facing the pump casing 13 is formed as a mating portion 11. The mating portion 11 is inserted into the integrated module 200. Fasteners are axially inserted through the lifting lugs and the integrated module 200 to connect and fix the electronic water pump 100 and the integrated module 200, so that the pump chamber of the electronic water pump 100 is connected to the pipeline of the integrated module 200. The distance from the side surface of the connecting part 20 facing the pump housing 13 to the liquid inlet 131 of the pump housing 13 is h, the axial thickness of the lifting lug is d, the circumferential width of the lifting lug is W, and the diameter of the connecting surface 101 is D. 0.087≤d / h≤0.527, 0.015≤W / (πD)≤0.064.

[0086] In the above embodiments, by reasonably setting the size of the lifting lug, the size of the mating part 11, and the size of the connecting surface 101, the rigidity of the lifting lug is improved, thereby reducing the vibration transmission rate from the electronic water pump 100 to the integrated module 200.

[0087] like Figure 1 , Figure 6 and Figure 7As shown, the thermal management system 1000 includes an integrated module 200 and an electronic water pump 100 according to the second embodiment of the present invention. The difference between the second and first embodiments is that the lifting lugs have first reinforcing ribs 31 on both circumferential sides, the first reinforcing ribs 31 connecting the lifting lugs and the connecting surface 101, and the surface of the first reinforcing rib 31 facing away from the connecting surface 101 is a concave arc surface. Figure 8 The diagram shows an electronic water pump 100 according to a third embodiment of the present invention. The difference from the first embodiment is that a first reinforcing rib 31 is provided on both circumferential sides of the lifting lug. The first reinforcing rib 31 connects the lifting lug and the connecting surface 101, and the surface of the first reinforcing rib 31 facing away from the connecting surface 101 is flat. In the above embodiment, the circumferential stiffness of the lifting lug is improved by providing the first reinforcing rib 31, which helps to reduce the vibration transmission rate from the electronic water pump 100 to the integrated module 200.

[0088] like Figure 9 The diagram shows an electronic water pump 100 according to a fourth embodiment of the present invention. The difference from the first embodiment is that a second reinforcing rib 32 is provided on the side of the lifting lug facing away from the pump housing 13, and the second reinforcing rib 32 connects the lifting lug and the housing 10. In the above embodiment, the axial stiffness of the lifting lug is improved by providing the second reinforcing rib 32, which helps to reduce the vibration transmission rate from the electronic water pump 100 to the integrated module 200.

[0089] Figure 10 The image shows an electronic water pump 100 according to the fifth embodiment of the present invention. The difference between the pump and the first embodiment is that a first reinforcing rib 31 and a second reinforcing rib 32 with concave arc surfaces are provided simultaneously. Figure 11 The diagram shows an electronic water pump 100 according to a sixth embodiment of the present invention. The difference between this pump and the first embodiment is that it simultaneously incorporates a first reinforcing rib 31 and a second reinforcing rib 32, both having planar surfaces. In the above embodiment, both the circumferential and axial stiffness of the lifting lugs are improved, resulting in a better reduction in vibration transmission rate.

[0090] like Figure 12 The diagram shows an electronic water pump 100 according to a seventh embodiment of the present invention. The difference between this embodiment and the second embodiment is that the connecting portion 20 includes a first part 21 and a second part 22. The first part 21 is disposed on the housing 12, and the second part 22 is disposed on the pump housing 13. The first part 21 and the second part 22 abut against each other and have the same circumferential and radial dimensions. Fasteners pass through the first part 21, the second part 22, and the integrated module 200 to achieve a connection and fixation between the housing 12, the pump housing 13, and the integrated module 200. In the above embodiment, the first part 21 and the second part 22 work together to reduce the vibration transmission rate from the electronic water pump 100 to the integrated module 200.

[0091] Other configurations and operations of the electronic water pump 100, thermal management system 1000, and vehicle 2000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0092] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0093] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic water pump, characterized in that, include: The housing includes a connecting surface on its outer peripheral surface, the connecting surface having a connecting portion protruding radially outward, the connecting portion being used for mounting and fixing the electronic water pump at a mounting point. The housing also includes a mating portion located on the side of the connecting portion facing the mounting point. The dimension of the connecting part along the axial direction of the electronic water pump is d, and the dimension of the mating part along the axial direction of the electronic water pump is h, where d / h is greater than or equal to 0.087 and less than or equal to 0.

527.

2. The electronic water pump according to claim 1, characterized in that, There are multiple connecting parts, and the multiple connecting parts are arranged at circumferential intervals along the connecting surface.

3. The electronic water pump according to claim 2, characterized in that, The diameter of the connecting surface is D, and the width of the connecting part along the circumference of the connecting surface is W, where W / (πD) is greater than or equal to 0.015 and less than or equal to 0.

064.

4. The electronic water pump according to claim 1, characterized in that, A reinforcing rib connects the connecting part to the shell.

5. The electronic water pump according to claim 4, characterized in that, The reinforcing rib includes a first reinforcing rib, which connects the circumferential side of the connecting portion and the connecting surface.

6. The electronic water pump according to claim 5, characterized in that, The height of the first reinforcing rib protruding from the connecting surface increases along the direction approaching the connecting portion, wherein, The surface of the first reinforcing rib facing away from the connecting surface is a plane; or, The surface of the first reinforcing rib facing away from the connecting surface is an arc surface, and the surfaces of the connecting surface and the connecting part are smoothly connected to the arc surface.

7. The electronic water pump according to claim 4 or 5, characterized in that, The reinforcing rib includes a second reinforcing rib, which connects the axial side of the connecting portion and the housing.

8. The electronic water pump according to claim 1, characterized in that, The connection part is provided with a vibration damping pad on the side facing the mounting point.

9. The electronic water pump according to claim 1, characterized in that, The housing includes a casing and a pump casing. The casing defines a mounting cavity for accommodating a rotor assembly. The pump casing covers one axial end of the casing and is connected to the casing, fitting to define a pump cavity for accommodating an impeller assembly. The connecting part is located on the housing; or... The connecting part includes a first part and a second part. The first part is disposed in the housing, and the second part is disposed in the pump housing. The first part and the second part are connected.

10. The electronic water pump according to claim 1, characterized in that, The connecting part is provided with an axially penetrating mounting hole for fasteners to be inserted.

11. A thermal management system, characterized in that, The device includes an integrated module and an electronic water pump according to any one of claims 1-10, wherein the connecting portion is connected to the integrated module, and the mating portion is located on the side of the connecting portion facing the integrated module and mating with the integrated module.

12. A vehicle, characterized in that, Including the thermal management system according to claim 11.

Images