WO2024164918A1

WO2024164918A1 - Electronic water pump, electronic water pump assembly, cooling system and vehicle

Info

Publication number: WO2024164918A1
Application number: PCT/CN2024/075165
Authority: WO
Inventors: 刘海平; 戴雄; 田芳
Original assignee: 苏州天凯电气有限公司
Priority date: 2023-02-08
Filing date: 2024-02-01
Publication date: 2024-08-15
Also published as: CN219345056U

Abstract

An electronic water pump, an electronic water pump assembly, a cooling system and a vehicle. The electronic water pump comprises: a first cover plate (1); a water pump housing (2), which is provided with an isolation sleeve (21) used for mounting a rotor assembly, wherein the first cover plate (1) is fastened on the water pump housing (2) and is welded to the water pump housing (2) to form a welding seam (9) therebetween, and the water pump housing (2) and a base body (31) of an assembly base (3) are aligned and fixed to form an assembling gap (10) therebetween; and a first sealing member (4), which is disposed between the welding seam (9) and the assembling gap (10) and by means of which the assembling gap (10) is sealed. The electronic water pump can seal the assembling gap, so as to prevent liquid in the water pump housing from leaking to the outside of the water pump housing from the assembling gap.

Description

Electronic water pump, electronic water pump assembly, cooling system and vehicle

Technical Field

The utility model relates to the technical field of electronic water pumps, in particular to an electronic water pump, an electronic water pump component, a cooling system and a vehicle.

Background Art

In the field of new energy vehicles, electronic water pumps have gradually replaced traditional mechanical water pumps, delivering coolant to the vehicle's thermal management system, taking away most of the heat generated by the vehicle's drive motor, battery and control module, and providing thermal fluid for the heater system, ensuring that the vehicle's electric drive system is in the optimal operating temperature range and improving the reliability and safety of new energy vehicles.

At present, coolant leakage often occurs at the connection between the first cover plate and the water pump housing during product quality inspection before leaving the factory or operation after installation, which increases the failure rate of the product.

Therefore, it is urgent to provide an electronic water pump, an electronic water pump assembly, a cooling system and a vehicle to solve the above problems.

Technical issues

The utility model aims to provide an electronic water pump, an electronic water pump assembly, a cooling system and a vehicle, so as to avoid coolant leakage of the electronic water pump and reduce the product failure rate.

Technical Solutions

In order to achieve the above purpose, the following technical solutions are provided:

The electronic water pump includes:

first cover plate;

The water pump housing is provided with an isolation sleeve for installing the rotor assembly, the first cover plate is buckled on the water pump housing and welded to the water pump housing to form a weld, and the water pump housing is butt-jointed and fixed to the base body of the assembly base to form an assembly gap;

The first sealing member is disposed between the welding seam and the assembly gap and closes the assembly gap.

As an optional solution for the electronic water pump, the first sealing member is coated on the periphery of the weld.

As an optional solution for the electronic water pump, the first sealing member is sandwiched between the first cover plate and the base body, and is sandwiched between the water pump housing and the base body.

As an optional solution for the electronic water pump, the first sealing member elastically abuts between the inner side wall of the base body and the welding seam.

As an optional solution for the electronic water pump, the first sealing member is a sealing ring.

As an optional solution for the electronic water pump, the base body is fixed to the water pump housing by screw locks, a plurality of connecting parts are circumferentially spaced apart on the outer wall of the base body, a plurality of connecting holes are circumferentially spaced apart on the outer edge of the water pump housing, and fasteners pass through the connecting holes and are threadedly connected to the connecting parts.

As an optional solution for the electronic water pump, it also includes a limit sealing groove and a limit sealing ring, one of which is arranged at one end of the water pump housing close to the first cover plate, and the other is arranged at one end of the first cover plate close to the water pump housing, and the limit sealing ring is embedded in the limit sealing groove and welded.

As an optional solution for the electronic water pump, the isolation sleeve is integrally formed with the water pump housing.

An electronic water pump assembly includes an assembly base, and the electronic water pump assembly also includes the electronic water pump as described above, wherein:

The first cover plate is provided with a water inlet port and a water outlet port, the base body of the assembly base is buckled on the first cover plate, and the water inlet of the assembly base is connected to the water inlet port, and the water outlet of the assembly base is connected to the water outlet port.

A cooling system comprises the electronic water pump or the electronic water pump assembly.

A vehicle comprising the above cooling system.

Beneficial Effects

The electronic water pump assembly provided by the utility model has a water inlet of an assembly base connected to a water inlet port, and a water outlet of the assembly base connected to a water outlet port. By arranging a first sealing member between the weld and the assembly gap, liquid in the water pump housing is prevented from leaking from the assembly gap to the outside of the water pump housing, thereby reducing the loss of coolant and facilitating normal operation of the product.

The cooling system provided by the utility model prevents liquid from leaking from the assembly gap to the outside of the water pump housing, thereby reducing the loss of cooling liquid.

The vehicle provided by the utility model can prevent the liquid in the water pump housing from leaking from the assembly gap to the outside of the water pump housing, reduce the loss of coolant, and ensure the normal operation of the product.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

FIG1 is a schematic diagram of the assembly of an electronic water pump from a first viewing angle in an embodiment of the utility model;

FIG2 is a schematic diagram of the assembly of the electronic water pump from a second viewing angle in an embodiment of the utility model;

FIG3 is a schematic diagram of an explosion of an electronic water pump in an embodiment of the present utility model;

FIG4 is a cross-sectional view of an electronic water pump in an embodiment of the present utility model;

FIG5 is a partial enlarged view of point A in FIG4 ;

FIG6 is a schematic structural diagram of an assembly base in an embodiment of the present utility model;

FIG7 is a schematic structural diagram of a first cover plate in an embodiment of the present utility model;

FIG8 is a schematic structural diagram of a water pump housing in an embodiment of the present utility model;

FIG. 9 is a schematic diagram of the structure of the first sealing member covering the weld in an embodiment of the utility model.

Reference numerals:

1. First cover plate; 2. Water pump housing; 3. Assembly base; 4. First seal; 5. Position-limiting seal groove; 6. Position-limiting seal ring; 7. Second seal; 8. Second cover plate; 9. Welding seam; 10. Assembly gap;

11. Water inlet port; 12. Water outlet port;

21. Isolation sleeve; 22. Connection hole;

31. Base body; 32. Water inlet; 33. Water outlet; 34. Connecting part; 35. Support ring; 36. First limiting groove; 37. Second limiting groove.

Best Mode for Carrying Out the Invention

In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model 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 the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

In order to avoid coolant leakage in the electronic water pump and reduce product failure rate, the present embodiment provides an electronic water pump and a vehicle. The specific contents of the present embodiment are described in detail below in conjunction with FIGS. 1 to 9 .

As shown in Figures 1 to 5, the electronic water pump includes a first cover plate 1, a water pump housing 2 and a first seal 4. The first cover plate 1 is buckled with the base body 31 of the assembly base 3. The water pump housing 2 is provided with an isolation sleeve 21 for installing the rotor assembly. The first cover plate 1 is buckled on the water pump housing 2 and welded with the water pump housing 2 to form a weld 9. The water pump housing 2 is fixedly docked with the base body 31 of the assembly base 3 to form an assembly gap 10. The first seal 4 is arranged between the weld 9 and the assembly gap 10, and closes the assembly gap 10.

In short, in the electronic water pump provided by the utility model, the water pump housing 2 is recessed with an isolation sleeve 21 for installing the rotor assembly, the first cover plate 1 is welded to the water pump housing 2 to form a weld 9, the water pump housing 2 is docked and fixed to the base body 31 of the assembly base 3 to form an assembly gap 10, and by arranging a first sealing member 4 between the weld 9 and the assembly gap 10, the assembly gap 10 can be closed to prevent the liquid in the water pump housing 2 from leaking from the assembly gap 10 to the outside of the water pump housing 2, thereby reducing the loss of coolant, reducing the failure rate of the product, ensuring the smooth flow of coolant in the electronic water pump, and facilitating the normal operation of the product.

For example, in some application scenarios, as shown in FIG9 , the first seal 4 is coated on the periphery of the weld 9 and closes the assembly gap 10. Under the premise of ensuring the closure of the assembly gap 10, the first seal 4 is coated on the periphery of the weld 9 to achieve the closure of the weld 9. By adding a first seal 4, the closure of the assembly gap 10 and the weld 9 is achieved. Not only is the sealing effect good, but the number of seals used is reduced, and the use cost is reduced. For example, in some application scenarios, the first seal 4 is sandwiched between the first cover plate 1 and the base body 31, and is sandwiched between the water pump housing 2 and the base body 31, sealing the channel between the weld 9 and the base body 31 leading to the assembly gap 10, and achieving the effect of closing the assembly gap 10.

For example, in some application scenarios, the material of the first seal 4 has a certain elasticity, and the first seal 4 elastically presses between the inner wall of the base body 31 and the weld 9. The first seal 4 undergoes a certain elastic deformation to adjust the sealing pressure of the first seal 4 on the weld 9, further improving the sealing effect of the first seal 4 on the weld 9.

Furthermore, the first sealing member 4 is a sealing ring, and the material thereof may be but is not limited to rubber or plastic, etc., which will not be elaborated herein.

Further, as shown in FIG. 3 , FIG. 6 and FIG. 8 , the base body 31 is fixed to the water pump housing 2 by screw lock docking, and the outer wall of the base body 31 is provided with a plurality of connection parts 34 at intervals in the circumferential direction, and the outer edge of the water pump housing 2 is provided with a plurality of connection holes 22 at intervals in the circumferential direction, and the fastener passes through the connection hole 22 and is threadedly connected with the connection part 34. In this embodiment, the fastener may be, but is not limited to, a bolt or a screw. The connection hole 22 passes through the outer edge of the water pump housing 2, and a plurality of connection parts 34 are arranged in a one-to-one correspondence with a plurality of connection holes 22. A threaded hole is provided in the connection part 34, and the fastener passes through the connection hole 22 and is connected with the threaded hole, thereby connecting the base body 31 with the water pump housing 2.

Furthermore, the electronic water pump also includes a limiting sealing groove 5 and a limiting sealing ring 6, one of which is arranged at one end of the water pump housing 2 close to the first cover plate 1, and the other is arranged at one end of the first cover plate 1 close to the water pump housing 2. The limiting sealing ring 6 is embedded in the limiting sealing groove 5 and welded, and the connection firmness between the first cover plate 1 and the water pump housing 2 is improved by increasing the welding contact area between the first cover plate 1 and the water pump housing 2.

Exemplarily, as shown in Figures 7 and 8, in this embodiment, the limiting sealing ring 6 is convexly provided on the first cover plate 1, and the limiting sealing groove 5 is concavely provided on the water pump housing 2. By inserting the limiting sealing ring 6 into the limiting sealing groove 5, the contact area between the first cover plate 1 and the water pump housing 2 is increased, and the connection firmness between the first cover plate 1 and the water pump housing 2 is improved.

Furthermore, the isolation sleeve 21 is integrally formed on the water pump housing 2, and there is no need to use fasteners to assemble the isolation sleeve 21 to the water pump housing 2, thereby reducing the assembly process; and the isolation sleeve 21 and the water pump housing 2 are an integrated structure, which enhances the overall structural strength of the water pump housing 2.

It can be understood that the electronic water pump in this embodiment includes a first cover plate 1, a water pump housing 2 and a first seal 4. The first cover plate 1 is buckled with the base body 31 of the assembly base 3. The water pump housing 2 is recessed with an isolation sleeve 21 for mounting the rotor assembly, and the first cover plate 1 is buckled on the water pump housing 2 and welded to the water pump housing 2. The first seal 4 is located between the first cover plate 1 and the base body 31, and between the water pump housing 2 and the base body 31. Since the first seal 4 is located between the first cover plate 1 and the base body 31, it can be used to close the gap between the first cover plate 1 and the base body 31; since the first seal 4 is also located in the gap between the water pump housing 2 and the base body 31, it can be used to close the gap between the water pump housing 2 and the base body 31 where the first seal 4 is located, so as to prevent the electronic water pump from leaking coolant.

Furthermore, the electronic water pump also includes a second sealing member 7, and the second sealing member 7 is sandwiched between the water inlet 32 and the water inlet port 11. By adding the second sealing member 7, the inflowing coolant is prevented from leaking from the connection gap between the water inlet 32 and the water inlet port 11, thereby ensuring the sealing of the connection between the water inlet 32 and the water inlet port 11. Furthermore, a support ring 35 is convexly provided on one end surface of the base body 31 close to the first cover plate 1, and the support ring 35 abuts against the first cover plate 1. By adding the support ring 35 to the base body 31, one end of the support ring 35 is supported on the first cover plate 1, thereby improving the overall structural strength of the electronic water pump,

Furthermore, the outer wall of the water inlet 32 is recessed with a first limiting groove 36, the water inlet pipe is sleeved on the outer wall of the water inlet 32, and the first clamp is clamped in the first limiting groove 36. Through the cooperation of the first clamp and the first limiting groove 36, the firmness and sealing of the connection between the water inlet pipe and the water inlet 32 are ensured, and the coolant is prevented from leaking from the gap where the water inlet pipe and the water inlet 32 are connected.

Furthermore, the outer wall of the water outlet 33 is recessed with a second limiting groove 37, the water outlet pipe is sleeved on the outer wall of the water outlet 33, and the second clamp is clamped in the second limiting groove 37. The cooperation between the second clamp and the second limiting groove 37 ensures the firmness and sealing of the connection between the water outlet pipe and the water outlet 33, and prevents the coolant from leaking from the gap where the water outlet pipe and the water outlet 33 are connected.

Furthermore, a second cover plate 8 is provided at one end of the water pump housing 2 away from the first cover plate 1 , and a space formed between the second cover plate 8 and the water pump housing 2 is used to install a stator assembly.

In this embodiment, an electronic water pump assembly is also provided, including an assembly base 3 and the above-mentioned electronic water pump. Among them, the first cover plate 1 is provided with a water inlet port 11 and a water outlet port 12, the base body 31 of the assembly base 3 is buckled on the first cover plate 1, and the water inlet 32 of the assembly base 3 is connected to the water inlet port 11, and the water outlet 33 of the assembly base 3 is connected to the water outlet port 12. By adding the first sealing member 4, liquid is prevented from leaking from the assembly gap 10 to the outside of the water pump housing 2, the loss of coolant is reduced, and the normal operation of the product is facilitated.

In this embodiment, a cooling system is also provided, including the above-mentioned electronic water pump or the above-mentioned electronic water pump assembly, which prevents the coolant from leaking from the assembly gap to the outside of the water pump housing 2, reduces the failure rate of the product, and ensures the smooth flow of the coolant in the electronic water pump.

In this embodiment, a vehicle is also provided, which includes the cooling system mentioned above. By adding a first sealing member 4, the failure rate of the product is reduced, and the smooth flow of the coolant in the electronic water pump is ensured, which facilitates the normal operation of the product.

Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

The electronic water pump is characterized by comprising:

first cover plate;

The water pump housing is provided with an isolation sleeve for installing the rotor assembly, the first cover plate is buckled on the water pump housing and welded to the water pump housing to form a weld, and the water pump housing is butt-jointed and fixed to the base body of the assembly base to form an assembly gap;

The first sealing member is disposed between the welding seam and the assembly gap and closes the assembly gap.
The electronic water pump according to claim 1, characterized in that the first sealing member is coated on the periphery of the weld.
The electronic water pump according to claim 2 is characterized in that the first sealing member is sandwiched between the first cover plate and the base body, and is sandwiched between the water pump housing and the base body.
The electronic water pump according to claim 2, characterized in that the first sealing member elastically abuts between the inner side wall of the base body and the weld.
The electronic water pump according to claim 2, characterized in that the first sealing member is a sealing ring.
The electronic water pump according to claim 1 is characterized in that the base body is fixed to the water pump housing by screw locks, a plurality of connecting parts are circumferentially spaced apart on the outer wall of the base body, a plurality of connecting holes are circumferentially spaced apart on the outer edge of the water pump housing, and fasteners pass through the connecting holes and are threadedly connected to the connecting parts.
The electronic water pump according to claim 1 is characterized in that it also includes a limiting sealing groove and a limiting sealing ring, one of which is arranged at one end of the water pump housing close to the first cover plate, and the other is arranged at one end of the first cover plate close to the water pump housing, and the limiting sealing ring is embedded in the limiting sealing groove and welded.
The electronic water pump according to any one of claims 1 to 7 is characterized in that the isolation sleeve is integrally formed with the water pump housing.
An electronic water pump assembly, comprising an assembly base, characterized in that the electronic water pump assembly also comprises the electronic water pump according to any one of claims 1 to 8, wherein:

The first cover plate is provided with a water inlet port and a water outlet port, the base body of the assembly base is buckled on the first cover plate, and the water inlet of the assembly base is connected to the water inlet port, and the water outlet of the assembly base is connected to the water outlet port.
A cooling system, characterized in that it comprises the electronic water pump according to any one of claims 1 to 8 or the electronic water pump assembly according to claim 9.
A vehicle, characterized by comprising the cooling system according to claim 10.