CN214380521U

CN214380521U - Motor and vehicle

Info

Publication number: CN214380521U
Application number: CN202120175246.8U
Authority: CN
Inventors: 张水杏; 孔庆波
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-10-08
Anticipated expiration: 2031-01-21

Abstract

The application relates to a motor and a vehicle. Wherein, the motor includes: the cooling device comprises a shell, a plurality of cooling channels and a cooling device, wherein the plurality of cooling channels are arranged at intervals in the circumferential direction of the shell and are arranged along the axial direction of the shell; stator core locates in the casing, and stator core's periphery circle interval is provided with a plurality of mounting holes, and a plurality of mounting holes set up along stator core's axial, and are equipped with the cooling pipeline that is used for supplying cooling liquid to flow in a plurality of mounting holes. The application provides a motor adopts double-deck cooling method, and motor cooling efficiency is higher, can effectively improve the rated power and the peak power of motor.

Description

Motor and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a motor and a vehicle.

Background

In the development process of the motor, the requirement on a cooling system is high. In order to make the water take away the heat generated by the motor as much as possible under the condition of certain power of the water pump, the contact area between the water flow and the motor must be increased as much as possible. In the related art, the motor is cooled only by adopting a mode of arranging a cold water flow passage on the shell, and the cooling efficiency of the motor is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve or partially solve the problems existing in the related art, the application provides the motor which adopts a double-layer cooling mode, has higher cooling efficiency and can effectively improve the rated power and the peak power of the motor.

A first aspect of the present application provides an electric machine comprising: the cooling device comprises a shell, a cooling device and a cooling device, wherein a plurality of cooling flow channels are arranged at intervals in the circumferential direction of the shell and are arranged along the axial direction of the shell; stator core locates in the casing, stator core's periphery circle interval is provided with a plurality of mounting holes, and is a plurality of the mounting hole is followed stator core's axial sets up, and is equipped with the cooling pipeline that is used for supplying cooling liquid to flow in a plurality of mounting holes.

Specifically, because a normal water-cooled motor is generally cooled through a cooling flow channel arranged on a machine shell, the heat of a motor iron core is equivalently conducted to the machine shell and then conducted to water to take away the heat, and the cooling of the machine shell cannot realize that all the machine shell covers cooling water. And the motor that this application provided not only can take away some heats through the cooling runner that sets up on the casing through adopting double-deck refrigerated mode, can also take away the heat through the cooling line of installing on stator core, and this kind of double-deck cooling mode can effectively improve the cooling efficiency of motor, reduces the effect more than 3 ℃ than single casing cooling.

According to one embodiment of the application, the stator core comprises an annular stator yoke and a plurality of stator teeth arranged at intervals along the inner circumference of the stator yoke, and stator slots for arranging windings are formed between the adjacent stator teeth and the stator yoke; the outer circumference of the stator yoke is provided with a plurality of mounting holes at intervals, and the plurality of mounting holes are arranged along the axial direction of the stator yoke and penetrate through the stator yoke.

The stator core comprises an annular stator yoke and a plurality of stator teeth arranged at intervals along the inner circumference of the stator yoke, stator slots are defined between the connected stator teeth, and stator windings are wound in the stator slots. A plurality of mounting holes interval sets up in the outer periphery circle of stator yoke, then sets up cooling line and lets in cooling liquid in a plurality of mounting holes, and then can take away the heat that the stator yoke produced.

In some embodiments, the plurality of mounting holes are symmetrically arranged with respect to a diameter direction of the stator yoke.

Through the diameter direction symmetry setting with the relative stator yoke of a plurality of mounting holes, then wear to establish in the mounting hole and let in when cooling liquid as cooling line, can reduce the heat of stator yoke uniformly, the motor cooling is comparatively even, helps improving the life of motor, and overall structure is comparatively regular, helps improving the pleasing to the eye degree of product.

In some embodiments, a plurality of kidney-shaped grooves are formed on the peripheral side of the casing, and the kidney-shaped grooves are used for connecting two adjacent cooling flow passages.

The plurality of kidney-shaped grooves are formed in the peripheral side of the machine shell and are respectively communicated with the two adjacent cooling flow channels, one of the adjacent cooling flow channels is communicated with the liquid inlet pipeline, so that the cooling liquid can synchronously flow into the cooling flow channels, and the efficiency of the cooling liquid flowing into the cooling flow channels is improved.

In some embodiments, a front end cover and a rear end cover are respectively disposed at two ends of the casing in the axial direction, and the front end cover and the rear end cover are detachably connected to two ends of the casing in the axial direction.

The front end cover and the rear end cover which are detachably connected with the casing are arranged at the two ends of the casing in the axial direction respectively, and the front end cover and the rear end cover can play a role in protecting the casing and the stator core, so that the stability and the reliability of the operation of the motor are improved.

In some embodiments, a first groove is formed on one side of the front end cover facing the shell, so that a first sealing ring is arranged in the first groove; one side of the rear end cover facing the shell is provided with a second groove, and a second sealing ring is arranged in the second groove.

Set up first sealing ring through the first recess that sets up towards one side of casing at the front end housing to set up the second sealing ring in the second recess that one side of casing set up towards the rear end housing face, first sealing ring and second sealing ring can play the effect of both sides around the sealed casing, prevent that cooling liquid from taking place to reveal after getting into the cooling flow way, and then improved the stability and the security of product operation.

In some embodiments, the mounting holes are circular holes; the cooling pipeline is a circular pipe, and the circular pipe is attached to the circular hole.

Of course, the mounting hole may also be a square hole or an angular hole, and the cooling pipeline is adapted to the mounting hole and is attached to the mounting hole, for example, welded or bonded to the mounting hole, so as to ensure the reliability of the cooling pipeline installation.

In some embodiments, the cooling pipeline is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively used for being connected with a liquid inlet pipeline and a liquid outlet pipeline.

In some embodiments, the cooling line comprises copper tubing.

The copper pipe has good heat-conducting property, and is beneficial to taking away heat generated by the motor, thereby being beneficial to improving the cooling efficiency of the motor. Of course, the cooling pipeline may be a pipeline made of a material such as an aluminum pipe having a good heat conductivity, in addition to the copper pipe.

A second aspect of the present application provides a vehicle comprising: a vehicle body and an electric machine as claimed in any one of the embodiments of the first aspect, the electric machine being provided on the vehicle body.

The vehicle provided in the embodiment of the second aspect of the present application includes the motor described in any one of the embodiments of the first aspect, so that the technical effects described in any one of the embodiments above are achieved, and details are not repeated herein.

The technical scheme provided by the application can comprise the following beneficial effects:

the motor that this application embodiment provided sets up a plurality of cooling flow channels through the circumference interval at the casing, and a plurality of cooling flow channels set up and run through the casing along the axial direction of casing, through letting in the cooling liquid who is used for cooling the casing in to cooling flow channel, and cooling liquid (like water) is through following cooling flow channel circulation flow to can take away the produced heat of motor operation in-process, and then can play the effect of cooling motor. In stator core was equipped with the casing, set up a plurality of mounting holes through the circumference interval at stator core, set up the cooling pipeline that is used for supplying cooling liquid circulation in a plurality of mounting holes, cooling liquid flows along cooling pipeline circulation to can take away the heat that stator core produced, in order to further play the effect of cooling motor, and then can effectively improve the cooling efficiency of motor, in order effectively to improve the rated power and the peak power of motor.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

FIG. 1 is a cross-sectional structural schematic view of a perspective of a motor shown in an embodiment of the present application;

fig. 2 is a front view schematic diagram of a motor according to an embodiment of the present application;

fig. 3 is a schematic perspective view of a stator core according to an embodiment of the present application;

fig. 4 is a front view structural schematic diagram of a stator core shown in the present application;

fig. 5 is a block diagram schematically illustrating the structure of a vehicle according to the embodiment of the present application.

Description of reference numerals: 1. a motor; 10. a housing; 101. a cooling flow channel; 102. a kidney-shaped groove; 20. a stator core; 201. mounting holes; 202. a cooling pipeline; 203. a stator yoke; 204. stator teeth; 205. a stator slot; 30. a front end cover; 40. a rear end cap; 2. a vehicle; 21. a vehicle body.

Detailed Description

Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the related art, only the mode that the cold water runner is arranged on the shell is adopted to cool the motor, the cooling efficiency of the motor is poor, and aiming at the problems, the embodiment of the application provides the motor, the cooling efficiency of the motor can be improved, and therefore the rated power and the peak power of the motor are improved.

The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic cross-sectional structure view of a motor in one view according to an embodiment of the present application.

Referring to fig. 1, an embodiment of the first aspect of the present application provides an electric machine 1, including: a casing 10 and a stator core 20. A plurality of cooling channels 101 are circumferentially arranged at intervals on the casing 10, and the plurality of cooling channels 101 are arranged along the axial direction of the casing 10; stator core 20 is located in casing 10, and stator core 20's outer periphery circle interval is provided with a plurality of mounting holes 201, and a plurality of mounting holes 201 set up along stator core 20's axial, and are equipped with the cooling pipeline 202 that is used for supplying cooling liquid to flow in a plurality of mounting holes 201.

The motor 1 that this application first aspect embodiment provided, through set up a plurality of cooling flow channels 101 at the circumference interval of casing 10, a plurality of cooling flow channels 101 set up and run through casing 10 along the axial direction of casing 10, through letting in the cooling liquid who is used for cooling casing 10 in to cooling flow channel 101, cooling liquid (like water) is through following cooling flow channel 101 circulation flow to can take away the produced heat of motor 1 operation in-process, and then can play the effect of cooling motor 1. Stator core 20 is equipped with in the casing 10, set up a plurality of mounting holes 201 through the circumference interval at stator core 20, be provided with the cooling pipeline 202 that is used for supplying the cooling liquid circulation in a plurality of mounting holes 201, cooling liquid flows along cooling pipeline 202 circulation, thereby can take away the heat that stator core 20 produced, in order to further play the effect of cooling motor 1, and then can effectively improve motor 1's cooling efficiency, in order to effectively improve motor 1's rated power and peak power. Wherein, can all set up cooling pipeline 202 in a plurality of mounting holes 201, also can set up cooling pipeline 202 in some mounting holes 201, owing to the homoenergetic realizes the purpose of this application, consequently all should be in the protective scope of this application, according to actual demand setting can.

Specifically, since a normal water-cooled motor is generally cooled through a cooling flow channel arranged on a housing, the heat of a stator core of the motor is transferred to the housing and then transferred to water to take away the heat, and the cooling of the housing cannot be realized by covering all the housing with cooling water. And the motor 1 that this application provided not only can take away some heats through the cooling runner 101 that sets up on the casing 10 through adopting double-deck refrigerated mode, can also take away the heat through the cooling pipeline 202 of installing on stator core 20, and this kind of double-deck cooling mode can effectively improve motor 1's cooling efficiency, reduces the effect more than 3 ℃ than single casing 10 cooling.

As shown in fig. 3 and 4, according to an embodiment of the present application, the stator core 20 includes an annular stator yoke 203 and a plurality of stator teeth 204 disposed at intervals along an inner circumference of the stator yoke 203, and a stator slot 205 for disposing a winding is formed between the adjacent stator teeth 204 and the stator yoke 203; a plurality of mounting holes 201 are formed at intervals in the outer circumference of the stator yoke 203, and the plurality of mounting holes 201 are formed along the axial direction of the stator yoke 203 and penetrate through the stator yoke 203.

The stator core 20 includes an annular stator yoke 203 and a plurality of stator teeth 204 spaced along an inner circumference of the stator yoke 203, and a stator slot 205 is defined between the adjacent stator teeth 204, and a stator winding is wound in the stator slot 205. The plurality of mounting holes 201 are arranged at intervals on the outer circumference of the stator yoke 203, and then the cooling pipelines 202 are arranged in the plurality of mounting holes 201 and are filled with cooling liquid, so that heat generated by the stator yoke 203 can be taken away.

As shown in fig. 3 and 4, in some embodiments, the plurality of mounting holes 201 are symmetrically arranged with respect to a diameter direction of the stator yoke 203.

Through the diameter direction symmetry setting with the relative stator yoke 203 of a plurality of mounting holes 201, then wear to establish in mounting hole 201 and let in cooling liquid when cooling pipeline 202, can reduce stator yoke 203 and motor 1's heat uniformly for motor 1 cools off comparatively evenly, helps improving motor 1's life, and overall structure is comparatively regular, helps improving the pleasing to the eye degree of product.

As shown in fig. 2, in some embodiments, the circumferential side of the casing 10 is provided with a plurality of slots 102, and the slots 102 are used to connect two adjacent cooling channels 101.

By arranging the plurality of kidney-shaped grooves 102 on the peripheral side of the casing 10, and respectively communicating the plurality of kidney-shaped grooves 102 with the two adjacent cooling channels 101, the two cooling channels are communicated with the liquid inlet pipeline through one of the adjacent cooling channels 101, so that the cooling liquid can synchronously flow into the two cooling channels 101, and the efficiency of the cooling liquid flowing into the cooling channels 101 is improved.

As shown in fig. 1, in some embodiments, a front cover 30 and a rear cover 40 are respectively disposed at two ends of the casing 10 in the axial direction, and the front cover 30 and the rear cover 40 are respectively detachably connected to two ends of the casing 10 in the axial direction.

The front end cover 30 and the rear end cover 40 detachably connected with the casing 10 are respectively arranged at the two ends of the casing 10 in the axial direction, so that the front end cover 30 and the rear end cover 40 can play a role in protecting the casing 10 and the stator core 20, and the stability and the reliability of the operation of the motor 1 are improved.

In some embodiments, the side of the front cover 30 facing the casing 10 is provided with a first groove, so that a first sealing ring is arranged in the first groove; a second groove is formed on one side of the rear end cover 40 facing the casing 10, and a second sealing ring is arranged in the second groove.

Set up first sealing ring in the first recess that sets up through the one side that faces towards casing 10 at front end housing 30 to set up the second sealing ring in the second recess that rear end housing 40 set up towards one side of casing 10, first sealing ring and second sealing ring can play the effect of both sides around sealed casing 10, prevent to appear after cooling liquid gets into cooling channel 101, and then improved the stability and the security of product operation.

In the above embodiment, the first seal ring and the second seal ring are silicone rubber seal rings.

The silicon rubber sealing ring has good sealing effect and good wear resistance, and is beneficial to prolonging the service life of the product.

As shown in fig. 3 and 4, in some embodiments, the mounting holes 201 are circular holes; the cooling pipeline is a circular pipe, and the circular pipe is attached in the circular hole.

Of course, the mounting hole 201 may also be a square hole or an angular hole, and the cooling pipeline is adapted to the mounting hole 201 and is attached to the mounting hole 201, for example, welded or bonded to the mounting hole 201, so as to ensure the reliability of the cooling pipeline installation.

In some embodiments, cooling line 202 has an inlet and an outlet for connection to an inlet line and an outlet line, respectively.

That is, the cooling line 202 is communicated with the liquid inlet line through the liquid inlet, so as to introduce cooling liquid into the stator yoke 203 through the liquid inlet line, and is communicated with the liquid outlet line, so as to achieve the discharge of the cooling liquid through the liquid outlet line, so as to complete the circulating flow of the cooling liquid in the stator yoke 203, thereby achieving the rapid cooling of the motor 1.

In some embodiments, cooling line 202 comprises copper tubing.

The copper pipe has good heat-conducting property, and is beneficial to taking away heat generated by the motor 1, thereby being beneficial to improving the cooling efficiency of the motor 1. Of course, the cooling pipeline may be a pipeline made of a material such as an aluminum pipe having a good heat conductivity, in addition to the copper pipe.

In some embodiments, electric machine 1 further includes a rotor disposed within stator core 20 and adapted to rotate relative to stator core 20.

Fig. 5 is a block diagram schematically illustrating the structure of the vehicle 2 according to the embodiment of the present application.

Referring to fig. 5, a second aspect of the present application provides a vehicle 2 comprising: a vehicle body 21 and an electric machine 1 as in any one of the embodiments of the first aspect, the electric machine 1 being provided on the vehicle body 21.

The vehicle 2 provided in the second aspect of the present application includes the motor 1 in any one of the first aspect of the present application, so that the technical effects of any one of the foregoing embodiments are achieved, and details are not repeated herein.

The motor 1 provided in the present application is described in detail below with reference to a specific embodiment.

As shown in fig. 1 to 4, the present application provides a motor 1, which includes a casing 10 and a stator core 20 disposed in the casing 10, and a front end cover 30 and a rear end cover 40 are respectively disposed at a front end and a rear end of the casing 10.

A plurality of cooling channels 101 are disposed at intervals on the circumferential side of the casing 10, and the plurality of cooling channels 101 are disposed along the radial direction of the casing 10 and penetrate through the front and rear ends of the casing 10.

By injecting the cooling liquid into the cooling flow channel 101, the cooling liquid can exchange heat with the casing 10 to take away heat from the casing 10, thereby reducing the temperature of the motor 1 and improving the cooling efficiency of the motor 1.

A first groove is formed in one side, facing the casing 10, of the front end cover 30, a first sealing ring is arranged in the first groove, a second groove is formed in one side, facing the casing 10, of the rear end cover 40, and a second sealing ring is arranged in the second groove.

First sealing ring and second sealing ring can play the effect at sealed casing 10 front and back both ends, prevent that cooling liquid from flowing out, guarantee motor 1's normal operating, improve the stability and the security of motor 1 operation.

A plurality of mounting holes 201 are provided at intervals on the outer peripheral side of the stator yoke 203, the plurality of mounting holes 201 are provided along the axial direction of the stator yoke 203 and penetrate the stator yoke 203, and cooling pipes are provided in the plurality of mounting holes 201.

Thus, the liquid inlet of the cooling pipeline is communicated with the liquid inlet pipeline, so that the cooling liquid enters the cooling pipeline to take away heat generated by the stator yoke 203, and the cooling effect on the motor 1 is achieved.

As shown in fig. 3, the plurality of mounting holes 201 are provided symmetrically with respect to the diameter direction of the stator yoke 203. Therefore, the motor 1 can be uniformly cooled in the cooling process, the service life of the motor 1 is prolonged, and the cooling effect is good.

To sum up, the motor that this application provided through adopting double-deck refrigerated mode, has effectively improved the cooling efficiency of motor operation in-process to the rated power and the peak power of motor have effectively been improved.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electric machine, comprising:

the cooling device comprises a shell, a cooling device and a cooling device, wherein a plurality of cooling flow channels are arranged at intervals in the circumferential direction of the shell and are arranged along the axial direction of the shell;

stator core locates in the casing, stator core's periphery circle interval is provided with a plurality of mounting holes, and is a plurality of the mounting hole is followed stator core's axial sets up, and is equipped with the cooling pipeline that is used for supplying cooling liquid to flow in a plurality of mounting holes.

2. The electric machine of claim 1, wherein:

the stator iron core comprises an annular stator yoke and a plurality of stator teeth arranged at intervals along the inner circumference of the stator yoke, and stator slots for arranging windings are formed between the adjacent stator teeth and the stator yoke;

the outer circumference of the stator yoke is provided with a plurality of mounting holes at intervals, and the plurality of mounting holes are arranged along the axial direction of the stator yoke and penetrate through the stator yoke.

3. The electric machine of claim 2, wherein:

the plurality of mounting holes are symmetrically arranged with respect to a diameter direction of the stator yoke.

4. The electric machine according to any of claims 1 to 3, characterized in that:

the two ends of the axial direction of the shell are respectively provided with a front end cover and a rear end cover, and the front end cover and the rear end cover are respectively detachably connected with the two ends of the axial direction of the shell.

5. The electric machine of claim 4, wherein:

the periphery of the casing is provided with a plurality of kidney-shaped grooves, and the kidney-shaped grooves are used for connecting two adjacent cooling channels.

6. The electric machine of claim 4, wherein:

a first groove is formed in one side, facing the shell, of the front end cover, and a sealing ring is arranged in the first groove;

one side of the rear end cover facing the shell is provided with a second groove, and a second sealing ring is arranged in the second groove.

7. The electric machine according to any of claims 1 to 3, characterized in that:

the mounting hole is a circular hole;

the cooling pipeline is a circular pipe, and the circular pipe is attached to the circular hole.

8. The electric machine according to any of claims 1 to 3, characterized in that:

the cooling pipeline is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively used for being connected with the liquid inlet pipeline and the liquid outlet pipeline.

9. The electric machine according to any of claims 1 to 3, characterized in that:

the cooling pipeline comprises a copper pipe.

10. A vehicle, characterized by comprising:

a vehicle body; and

the electric machine of any one of claims 1 to 9, provided on the vehicle body.