Electronic water pump and vehicle thermal management system

Abstract

The utility model provides an electronic water pump and a vehicle thermal management system. The electronic water pump includes: a housing including a fluid inlet and a fluid outlet; the motor is arranged in the shell; the impeller is driven by the motor to rotate so as to form a fluid path from the fluid inlet to the fluid outlet; the heating piece is at least partially located in the fluid path so as to heat the fluid; a gap is formed between the shell and the motor in the circumferential direction of the motor, the fluid path at least partially passes through the gap, the heating piece is arranged in the gap, the heating piece comprises at least two heating surfaces which are not on the same surface, and fluid passing through the gap at least partially passes through the heating surfaces. According to the application, the heating piece is arranged in the fluid path, and the heating piece comprises a plurality of heating surfaces which are not on the same surface, so that the contact area of the fluid and the heating surfaces can be increased, and the heating efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle thermal management systems, and in particular to an electronic pump and a vehicle thermal management system. Background Art

[0002] In the vehicle's thermal management system, the electronic water pump takes the coolant away from the vehicle's heat source through fluid circulation, and then heats the coolant through the heating element to maintain the thermal balance of the system. The electronic water pump is mainly used to adjust the operating temperature of the vehicle's battery, motor and other key components to ensure that they operate within a suitable temperature range. An efficient electronic water pump can not only improve the vehicle's energy efficiency, but also extend the service life of the vehicle's key components and improve the performance and reliability of the entire vehicle.

[0003] However, existing electronic water pumps have shortcomings such as low heating efficiency and poor thermal management effect, which need to be optimized and improved. Summary of the invention

[0004] In order to solve the above technical problems, the present application proposes an electronic water pump and a vehicle thermal management system to solve the problem of low heating efficiency in the electronic water pump.

[0005] In order to achieve one of the above-mentioned application purposes, an embodiment of the present application provides an electronic water pump, comprising:

[0006] a housing including a fluid inlet and a fluid outlet;

[0007] A motor, disposed in the housing;

[0008] an impeller, the impeller being driven to rotate by the motor to form a fluid path from the fluid inlet to the fluid outlet;

[0009] a heating element, the heating element being at least partially located in the fluid path to heat the fluid;

[0010] The shell and the motor have a gap in the circumferential direction of the motor, the fluid path at least partially passes through the gap, and the heating element is arranged in the gap, wherein the heating element includes at least two heating surfaces that are not on the same surface, and the fluid passing through the gap at least partially passes through the heating surface.

[0011] As a further improvement of an embodiment of the present application, the two heating surfaces are parallel to the first plane, and the axis of the motor is perpendicular to the first plane.

[0012] As a further improvement of an embodiment of the present application, the heating element includes two heat conducting plates, a sealed cavity is formed between the two heat conducting plates, a heating film is arranged in the sealed cavity, and the number of the heating surfaces is two and they are respectively formed on the two heat conducting plates.

[0013] As a further improvement of an embodiment of the present application, at least two heating films are provided, at least two heating films are stacked and a thermal conductive adhesive layer is provided between two adjacent heating films.

[0014] As a further improvement of an embodiment of the present application, the heating element is provided with a plurality of liquid holes, the plurality of liquid holes are located on a side of the heating element away from the motor, and are arranged at intervals along the circumference of the motor.

[0015] As a further improvement of one embodiment of the present application, the housing includes a pump casing and an end cover, the pump casing is arranged around the motor, the end cover is arranged at one end of the motor, the end of the pump casing away from the end cover is connected to the motor, and the heating element is located between the pump casing and the motor.

[0016] As a further improvement of an embodiment of the present application, the fluid inlet is arranged on the end cover, and the fluid outlet is arranged on the pump casing.

[0017] As a further improvement of an embodiment of the present application, the motor includes a casing, and the heating element abuts against the casing.

[0018] As a further improvement of an embodiment of the present application, the motor includes an isolation cavity, and the electronic water pump also includes a circuit board assembly, and the circuit board assembly is arranged in the isolation cavity and close to the bottom wall of the isolation cavity;

[0019] A heat dissipation cavity is formed between the housing and the end cover, and the heat dissipation cavity is isolated from the isolation cavity by the bottom wall of the isolation cavity.

[0020] In order to achieve one of the above application purposes, an embodiment of the present application further provides a vehicle thermal management system, including the electronic water pump as described above.

[0021] Compared with the prior art, the present application has the following beneficial effects: the electronic water pump and vehicle thermal management system of the present application, by arranging a heating element in the fluid path and making the heating element include multiple heating surfaces that are not on the same surface, can increase the contact area between the fluid and the heating surface and improve the heating efficiency. At the same time, by arranging a heating element in the gap between the shell and the motor, the space can be used more effectively and the thermal efficiency of the entire system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings provided herein are used to further illustrate the understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1This is a schematic diagram of an explosion of an electronic water pump according to an embodiment of the present application;

[0024] Figure 2 is a cross-sectional schematic diagram of an electronic water pump according to an embodiment of the present application;

[0025] Figure 3 for Figure 2 A cross-sectional schematic diagram from another angle, wherein the direction indicated by the arrow is the flow direction of the fluid in the electronic water pump;

[0026] Figure 4 This is a schematic structural diagram of a heating element according to an embodiment of the present application;

[0027] Figure 5 This is an exploded schematic diagram of a heating element according to one embodiment of the present application;

[0028] Figure 6 It is a cross-sectional schematic diagram of a heating element according to one embodiment of the present application.

[0029] 100. Electronic water pump; 1. Housing; 11. Fluid inlet; 12. Fluid outlet; 13. Pump casing; 14. End cover; 2. Motor; 21. Rotor; 22. Stator; 23. Casing; 24. Isolation chamber; 3. Impeller; 4. Heating element; 41. Heating surface; 42. Heat conducting plate; 43. Heating film; 44. Heat conducting adhesive layer; 45. Liquid passage hole; 46. Conductive connector; 5. Circuit board assembly; 51. Circuit board; 52. Power element; 6. Heat dissipation chamber. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution of this application will be clearly and completely described in combination with the specific embodiments of this application and the corresponding drawings. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] In the various drawings of the present application, for the sake of convenience of illustration, some dimensions of structures or parts are exaggerated relative to other structures or parts, and therefore, are only used to illustrate the basic structure of the subject matter of the present application.

[0032] It should be understood that, unless otherwise clearly specified and limited, in the description of this application, the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] An embodiment of the present application provides a vehicle thermal management system, including an electronic water pump 100. The electronic water pump 100 can be used to implement thermal management of the vehicle, ensuring that the vehicle can maintain an optimal operating temperature under various operating conditions, thereby improving the overall performance and reliability of the vehicle.

[0034] See also Figures 1 to 3 The electronic water pump 100 includes a housing 1 , a motor 2 , an impeller 3 and a heating element 4 .

[0035] The housing 1 includes a fluid inlet 11 and a fluid outlet 12 . The motor 2 is disposed in the housing 1 . The impeller 3 is driven to rotate by the motor 2 to form a fluid path from the fluid inlet 11 to the fluid outlet 12 .

[0036] The heating element 4 is at least partially located in the fluid path to heat the fluid.

[0037] The housing 1 and the motor 2 have a gap in the circumferential direction of the motor 2 , the fluid path at least partially passes through the gap, and the heating element 4 is disposed in the gap.

[0038] The heating element 4 includes at least two heating surfaces 41 which are not on the same surface, and the fluid passing through the gap at least partially passes through the heating surfaces 41 .

[0039] By arranging a heating element 4 in the fluid path and making the heating element 4 include multiple heating surfaces 41 that are not on the same surface, the contact area between the fluid and the heating surface 41 can be increased, thereby improving the heating efficiency. Meanwhile, by arranging the heating element 4 in the gap between the shell 1 and the motor 2, the space can be more effectively utilized, thereby improving the thermal efficiency of the entire system.

[0040] Of course, the fluid here can be water, or other fluid that can be used for heating.

[0041] The motor 2 includes a rotor 21 and a stator 22. The rotor 21 is rotatably connected to the impeller 3, thereby driving the impeller 3 to rotate, thereby guiding the fluid and reducing the flow resistance.

[0042] The two heating surfaces 41 are parallel to the first plane, and the axis of the motor 2 is perpendicular to the first plane, which can not only increase the effective contact area between the fluid and the heating surfaces 41, but also improve the uniformity of heat distribution in the fluid path.

[0043] Combination Figures 4 to 6The heating element 4 includes two heat conducting plates 42, a sealed cavity is formed between the two heat conducting plates 42, a heating film 43 is arranged in the sealed cavity, and the number of the heating surfaces 41 is two and they are respectively formed on the two heat conducting plates 42. By forming a sealed cavity between the heat conducting plates 42 and arranging the heating film 43, the heat conduction efficiency of the heating film 43 through the heat conducting plates 42 can be improved, and at the same time, the heating film 43 is prevented from directly contacting the fluid to avoid causing a short circuit in the electronic water pump 100, and the service life of the heating film 43 and the heating element 4 can also be extended.

[0044] In a specific embodiment, the heating element 4 is annular, and the two heat conducting plates 42 are also annular, so that the uniformity of heating the fluid in the circumferential direction of the motor 2 can be improved.

[0045] At least two heating films 43 are provided, and at least two heating films 43 are stacked and a heat-conducting adhesive layer 44 is provided between two adjacent heating films 43. Stacking at least two heating films 43 can increase the heating area and further improve the heating efficiency. The heat-conducting adhesive layer 44 provided between two adjacent heating films 43 can not only bond the two adjacent heating films 43 together, but also help to evenly conduct heat, avoid local overheating, and improve the uniformity of heat distribution.

[0046] Specifically, the heating film 43 is ring-shaped, so that the heating area can be increased and the heating efficiency of the electronic water pump 100 can be improved.

[0047] See also Figures 4 to 5 The heating element 4 is provided with a plurality of liquid holes 45, which are located on the side of the heating element 4 away from the motor 2 and are arranged at intervals along the circumference of the motor 2. The plurality of liquid holes 45 can ensure that the fluid can fully pass through the heating element 4, increase the flow rate of the fluid, and improve the heating efficiency. The plurality of liquid holes 45 are arranged at intervals along the circumference of the motor 2, which can achieve uniformity of fluid distribution in the circumference of the motor 2, thereby improving the uniformity of heat distribution in the circumference of the motor 2, and the interval arrangement of the plurality of liquid holes 45 also helps to reduce the resistance to liquid flow.

[0048] See also Figures 1 to 3 The housing 1 further comprises a pump housing 13 and an end cover 14. The pump housing 13 is arranged around the motor 2. The end cover 14 is arranged at one end of the motor 2. The end of the pump housing 13 away from the end cover 14 is connected to the motor 2. The heating element 4 is located between the pump housing 13 and the motor 2. This structural arrangement can optimize space utilization, so that the heating element 4 can be compactly arranged between the pump housing 13 and the motor 2, thereby reducing the volume and improving the integration of the device and the thermal management effect.

[0049] The fluid inlet 11 is provided at the end cover 14, and the fluid outlet 12 is provided at the pump housing 13. Such an arrangement of the fluid inlet 11 and the fluid outlet 12 can optimize the flow path of the fluid, improve the efficiency and uniformity of the fluid flow, and help achieve more efficient heating and pumping effects.

[0050] The impeller 3 is arranged at the end cover 14, and the fluid enters from the fluid inlet 11. When passing through the impeller 3, under the drive of the motor 2, the fluid flows along the circumference of the impeller 3 to the gap between the housing 1 and the motor 2, and not only contacts the heating surface 41 of the heater 4 close to the end cover 14, but also contacts the heating surface 41 of the heater 4 away from the end cover 14 after passing through the liquid hole 45, so as to heat the fluid, and then discharge the electronic water pump 100 from the fluid outlet 12.

[0051] See also Figures 1 to 3 The motor 2 includes a housing 23 , and the heating element 4 abuts against the housing 23 , thereby providing sufficient support for the installation of the heating element 4 and facilitating the installation of the heating element 4 .

[0052] The motor 2 includes an isolation cavity 24 , and the electronic water pump 100 also includes a circuit board assembly 5 . The circuit board assembly 5 is disposed in the isolation cavity 24 and is disposed close to the bottom wall of the isolation cavity 24 .

[0053] A heat dissipation cavity 6 is formed between the housing 23 and the end cover 14, and the heat dissipation cavity 6 is isolated from the isolation cavity 24 by the bottom wall of the isolation cavity 24. On the one hand, the circuit board assembly 5 can be isolated from the fluid flowing through the heat dissipation cavity 6 by the bottom wall of the isolation cavity 24, so as to prevent the fluid from contacting the circuit board assembly 5 and causing the circuit board assembly 5 to short-circuit; on the other hand, the fluid flowing through the heat dissipation cavity 6 can exchange heat with the circuit board assembly 5 via the bottom wall of the isolation cavity 24, which can not only dissipate heat for the circuit board assembly 5, thus solving the problem that the circuit board assembly 5 cannot dissipate heat in time and affects its reliability, but also can preheat the fluid by using the heat dissipated by the circuit board before the fluid passes through the heating element 4, thereby saving energy and improving the heating efficiency of the electronic water pump 100.

[0054] See also Figures 2 to 3 The circuit board assembly 5 includes a circuit board 51 and a power element 52. The power element 52 is arranged on a side of the circuit board 51 facing the bottom wall of the isolation cavity 24, so that sufficient heat dissipation of the power element 52 can be ensured.

[0055] The power element 52 preferably adopts an insulated gate bipolar transistor, that is, an Insulate-Gate Bipolar Transistor, or IGBT for short, which combines the advantages of a power transistor (Giant Transistor—GTR) and a power field effect transistor (Power MOSFET) and has good characteristics.

[0056] The circuit board assembly 5 is connected to the heating element 4 and provides electrical energy to the heating element 4 so that the heating element 4 generates heat to heat the fluid passing through the heating element 4 .

[0057] See also Figures 5 and 6 Specifically, the heating element 4 further includes a conductive connecting member 46 , and the conductive connecting member 46 connects the heating film 43 and the circuit board assembly 5 , thereby realizing electrical connection between the heating element 4 and the circuit board assembly 5 .

[0058] The heating element 4 is in contact with the housing 23, and the conductive connecting element 46 can be connected to the circuit board assembly 5 in the isolation chamber 24 by passing through the housing 23, which not only shortens the connection path of the conductive connecting element 46, but also prevents the conductive connecting element 46 from contacting the fluid and causing a short circuit, and also prevents the fluid from entering the isolation chamber 24 and contacting the circuit board assembly 5 and causing a short circuit.

[0059] Compared with the prior art, the beneficial effects of the present application are as follows: the electronic water pump 100 and the vehicle thermal management system of the present application, by arranging a heating element 4 in the fluid path, and making the heating element 4 include multiple heating surfaces 41 that are not on the same surface, can increase the contact area between the fluid and the heating surface 41 and improve the heating efficiency. At the same time, by arranging the heating element 4 in the gap between the shell 1 and the motor 2, the space can be used more effectively and the thermal efficiency of the entire system can be improved.

[0060] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0061] The above is only a preferred implementation of the present application. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present application, and these all fall within the scope of protection of the present application.

Claims

1. An electronic water pump, comprising: a housing including a fluid inlet and a fluid outlet; A motor, disposed in the housing; an impeller, the impeller being driven to rotate by the motor to form a fluid path from the fluid inlet to the fluid outlet; a heating element, the heating element being at least partially located in the fluid path to heat the fluid; Features: The shell and the motor have a gap in the circumferential direction of the motor, the fluid path at least partially passes through the gap, and the heating element is arranged in the gap, wherein the heating element includes at least two heating surfaces that are not on the same surface, and the fluid passing through the gap at least partially passes through the heating surface.

2. The electronic water pump according to claim 1, characterized in that: The two heating surfaces are parallel to a first plane, and the axis of the motor is perpendicular to the first plane.

3. The electronic water pump according to claim 1, characterized in that: The heating element comprises two heat conducting plates, a sealed cavity is formed between the two heat conducting plates, a heating film is arranged in the sealed cavity, and the number of the heating surfaces is two and they are respectively formed on the two heat conducting plates.

4. The electronic water pump according to claim 3, characterized in that: At least two heating films are provided, and at least two heating films are stacked and a heat-conducting adhesive layer is provided between two adjacent heating films.

5. The electronic water pump according to claim 1, characterized in that: The heating element is penetrated by a plurality of liquid holes, the plurality of liquid holes are located on a side of the heating element away from the motor, and are spaced apart along the circumference of the motor.

6. The electronic water pump according to claim 1, characterized in that: The housing comprises a pump casing and an end cover, wherein the pump casing is arranged around the motor, the end cover is arranged at one end of the motor, the end of the pump casing away from the end cover is connected to the motor, and the heating element is located between the pump casing and the motor.

7. The electronic water pump according to claim 6, characterized in that: The fluid inlet is arranged on the end cover, and the fluid outlet is arranged on the pump housing.

8. The electronic water pump according to claim 6, characterized in that: The motor comprises a casing, and the heating element abuts against the casing.

9. The electronic water pump according to claim 8, characterized in that: The motor includes an isolation cavity, and the electronic water pump also includes a circuit board assembly, wherein the circuit board assembly is arranged in the isolation cavity and is arranged close to the bottom wall of the isolation cavity; A heat dissipation cavity is formed between the housing and the end cover, and the heat dissipation cavity is isolated from the isolation cavity by a bottom wall of the isolation cavity.

10. A vehicle thermal management system, characterized in that: The electronic water pump comprises the electronic water pump as claimed in any one of claims 1 to 9.

Images