CN217388347U

CN217388347U - Motor and vehicle

Info

Publication number: CN217388347U
Application number: CN202220193801.4U
Authority: CN
Inventors: 刘军
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-09-06
Anticipated expiration: 2032-01-24

Abstract

The application discloses motor and vehicle, the motor includes: a housing; the stator assembly is arranged in the shell and is fixedly connected with the shell; a rotor assembly, the rotor assembly comprising: a rotor shaft, the rotor shaft comprising: first end, second end and connect first board with the connecting portion between the second end, first end with the second end supports through the bearing respectively on the casing, first end the second end with connecting portion are integrated into one piece. According to the motor, the rotor shaft is simple in forming process and easy to install, the production efficiency is greatly improved, and the production cost and the labor cost are reduced.

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 flywheel energy storage device in the related art, the rotor shaft has a relatively large number of connecting components, which reduces the reliability of the system, and the assembly of a large number of components may result in an increase in the installation process and cost, for example, the conventional rotor shaft assembly includes: the non-magnetic shaft, the connecting bolt, the dynamic balance process disc, the lower end shaft and a plurality of parts need to be formed independently and are complex to install.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the application is to provide a motor, the forming process of the rotor shaft of the motor is simple, the motor is easy to install, the production efficiency is greatly improved, and the production cost and the labor cost are reduced.

The application also provides a vehicle with the motor.

The motor according to the application comprises: a housing; the stator assembly is arranged in the shell and is fixedly connected with the shell; a rotor assembly, the rotor assembly comprising: a rotor shaft, the rotor shaft comprising: the first end, the second end and connect the first board portion with the connecting portion between the second end, the first end with the second end supports through the bearing respectively on the casing, the first end the second end with the connecting portion are integrated into one piece.

According to the motor of this application, through constructing the rotor shaft as integrated into one piece spare to make rotor shaft shaping simple process, and the installation is easy, promoted production efficiency greatly, reduced manufacturing cost and cost of labor.

According to one embodiment of the application, the housing comprises: an inner shell and an outer shell disposed outside the inner shell, the inner shell being spaced apart from at least a portion of the outer shell to form a cooling water channel.

According to an embodiment of the application, two ends of the rotor shaft are further provided with magnetic isolation baffles, and the outer diameter of each magnetic isolation baffle is the same as that of the corresponding end of the rotor shaft.

According to an embodiment of the application, the electric machine further comprises: the flywheel, the center of the one end of rotor shaft is provided with the location boss, the flywheel cover is established on the location boss and end to be in the rotor shaft the terminal surface of one end.

According to an embodiment of the application, the terminal surface of one end of rotor shaft is provided with first mounting hole, the flywheel is fixed through first fastener rotor shaft one end, first fastener wear to establish the flywheel and with first mounting hole screw-thread fit.

According to an embodiment of the application, the electric machine further comprises: the clutch driving disc is fixedly connected with the flywheel through a second fastener, a second mounting hole is formed in the flywheel, and the second fastener penetrates through the clutch driving disc and is in threaded fit with the second mounting hole.

According to one embodiment of the application, the flywheel is provided with a positioning pin hole, and the clutch driving disc is provided with a positioning pin matched with the positioning pin hole.

According to an embodiment of the application, the electric machine further comprises: the clutch driven disc is arranged between the clutch driving disc and the flywheel and is suitable for being pressed on the clutch driving disc to realize torque transmission.

According to one embodiment of the application, the clutch driven plate is pressed against the clutch driving plate by a pressure generated by pretensioning of a third fastening member.

The vehicle according to the application comprises the motor, and the vehicle is provided with the motor, so that the whole process of the vehicle is simple, the installation is easy, the production efficiency is greatly improved, and the production cost and the labor cost are reduced.

Additional aspects and advantages of the present application 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 present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a cross-sectional view of an electric machine according to an embodiment of the present application;

fig. 2 is an exploded view of a motor according to an embodiment of the present application.

Reference numerals: the motor 100, the housing 110, the inner housing 111, the outer housing 112, the stator assembly 120, the rotor assembly 130, the rotor shaft 131, the positioning boss 131a, the first end 131b, the second end 131c, the connecting portion 131d, the magnetism isolating baffle 131e, the flywheel 140, the clutch driving disk 150, the clutch driven disk 160, the first fastening member 171, the second fastening member 172, the third fastening member 173, and the cooling water channel 101.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

A motor 100 according to an embodiment of the present application is described below with reference to fig. 1-2.

The motor 100 according to an embodiment of the present application may include a housing 110, a stator assembly 120, and a rotor assembly 130.

The housing 110 is an outermost component of the motor 100 and is an integral structural member of the motor 100, the stator assembly 120 and the rotor assembly 130 are both directly or indirectly mounted on the housing 110, and the stator assembly 120 and the rotor assembly 130 are both disposed inside the housing 110.

The stator assembly 120 is directly fixed to the housing 110, the stator assembly 120 includes a stator core and stator windings, the rotor assembly 130 includes a rotor shaft 131 and rotor windings, and both ends of the rotor shaft 131 are mounted on the housing 110 through bearings. Specifically, the rotor shaft 131 includes a first end portion 131b, a second end portion 131c, and a connecting portion 131d connected between the first end portion 131b and the second end portion 131c, the first end portion 131b and the second end portion 131c are both supported on the housing 110 through bearings, and the first end portion 131b, the second end portion 131c, and the connecting portion 131d are integrally formed.

The rotor assembly in the prior art comprises a nonmagnetic shaft, a dynamic balance process disc and a lower end shaft, wherein the nonmagnetic shaft, the dynamic balance process disc and the lower end shaft are all independent parts and need to be installed together after being formed respectively; from this, promoted the installation degree of difficulty greatly, and need the major forming also lead to the shaping degree of difficulty to increase.

According to motor 100 of the embodiment of the application, rotor shaft 131 is constructed as an integrated part, so that rotor shaft 131 is simple in forming process and easy to install, production efficiency is greatly improved, and production cost and labor cost are reduced.

In some embodiments of the present application, the casing 110 includes an inner casing 111 and an outer casing 112 disposed outside the inner casing 111, the inner casing 111 being spaced apart from at least a portion of the outer casing 112 to form the cooling water channel 101.

Specifically, a water channel rib is arranged between the inner casing 111 and the outer casing 112, and the water channel rib can be spiral on the whole, so that the defined water channel is also spiral, and the heat dissipation effect of the motor 100 is improved. The water channel muscle can be 1 ~ 3 way, and the both ends of casing 110 all are provided with O type circle, are connected with the shell through interior outer shell fixing bolt, by O type circle, water channel muscle, interior shell 111's outer wall, the mating reaction of the inner wall of shell body 112, form sealed spiral water channel.

The inner housing 111 and the outer housing 112 may be coupled together by a third fastener 173, and particularly, the same side ends of the inner housing 111 and the outer housing 112 may be fixed together.

According to some embodiments of the present application, both ends of the rotor shaft 131 are further provided with magnetic shielding plates 131e, each having an outer diameter identical to that of a corresponding end of the rotor assembly. The magnetic isolation baffle can replace a dynamic balance process disc, on one hand, the magnetic isolation baffle can isolate electromagnetic wires to the greatest extent, and on the other hand, the magnetic isolation baffle can also replace the dynamic balance process disc, so that the number of parts of the motor 100 is further reduced, the integral installation speed of the motor 100 is improved, and the integral process difficulty of the motor 100 is reduced.

In some embodiments of the present application, the rotor shaft 131 may adopt a skewed pole scheme, so that pulsation of the rotor shaft 131 is reduced, noise of the motor 100 is reduced, and overall NVH performance of a vehicle is improved.

According to some embodiments of the present application, the motor 100 further includes a flywheel 140, a positioning boss 131a is disposed at a center of one end of the rotor shaft 131, and the flywheel 140 is sleeved on the positioning boss 131a and stops against an end surface of the one end of the rotor shaft 131. The flywheel 140 may store a part of kinetic energy, and after the motor 100 is started and stably operates for a period of time, the flywheel 140 may store the kinetic energy, and when the rotor shaft 131 of the motor 100 does not output power outwards any more, the flywheel 140 may release the stored kinetic energy, output power outwards, and drive the rotor shaft 131 to rotate together.

The positioning boss 131a is matched with the flywheel 140 to position the flywheel 140 in the radial direction, so that the rotating axis of the flywheel 140 is coincident with the rotating axis of the rotor shaft 131; the end surface of the one end of the rotor shaft 131 is fitted to the flywheel 140 to position the flywheel 140 in the axial direction. Thereby, axial positioning and radial positioning of the flywheel 140 can be achieved.

In some embodiments of the present application, a first mounting hole is provided on an end surface of the one end of the rotor shaft 131, the flywheel 140 is fixed on the one end of the rotor shaft 131 by a first fastening member 171, and the first fastening member 171 penetrates through the flywheel 140 and is in threaded fit with the first mounting hole. Thereby, the flywheel 140 can be firmly fixed to the one end of the rotor shaft 131, and it is ensured that the flywheel 140 and the rotor shaft 131 can rotate synchronously.

The motor 100 according to the embodiment of the present application further includes a clutch driving plate 150, the clutch driving plate 150 is fixedly connected to the flywheel 140 through a second fastening member 172, the flywheel 140 is provided with a second mounting hole, and the second fastening member 172 penetrates through the clutch driving plate 150 and is in threaded fit with the second mounting hole. Thus, the clutch driving disk 150 can be firmly fixed to the flywheel 140, and the clutch driving disk 150 can rotate together with the flywheel 140.

Further, a positioning pin hole is formed in the flywheel 140, and a positioning pin matched with the positioning pin hole is formed in the clutch driving disc 150. Before the clutch driving disk 150 is fixed on the flywheel 140, the clutch driving disk 150 and the flywheel 140 may be first positioned by the positioning pin hole and the positioning pin, and after the positioning is completed, the clutch driving disk 150 is fixed on the flywheel 140 by the second fastening member 172.

The motor 100 according to an embodiment of the present application further includes a clutch driven plate 160, the clutch driven plate 160 being disposed between the clutch driving plate 150 and the flywheel 140, the clutch driven plate 160 being adapted to be pressed against the clutch driving plate 150 to achieve torque transmission, and torque on the clutch driving plate 150 being transmittable to the clutch driven plate 160 through friction between the clutch driving plate 150 and the clutch driven plate 160.

Further, the clutch driven plate 160 is pressed against the clutch driving plate 150 by a pressure generated by the third fastener pretension. Thus, the magnitude of the pressure between the clutch driving disk 150 and the clutch driven disk 160 may be achieved by adjusting the third fastening member.

The vehicle of the embodiment of the present application is briefly described below.

The vehicle according to the embodiment of the application comprises the motor 100 of the embodiment, and the vehicle according to the embodiment of the application is provided with the motor 100, so that the whole process of the vehicle is simple, the installation is easy, the production efficiency is greatly improved, and the production cost and the labor cost are reduced.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electric machine, comprising:

a housing;

the stator assembly is arranged in the shell and is fixedly connected with the shell;

a rotor assembly, the rotor assembly comprising: a rotor shaft, the rotor shaft comprising: the first end, the second end and connect first end with the connecting portion between the second end, first end with the second end supports through the bearing respectively on the casing, first end the second end with the connecting portion are integrated into one piece.

2. The electric machine of claim 1, wherein the housing comprises: an inner shell and an outer shell disposed outside the inner shell, the inner shell being spaced apart from at least a portion of the outer shell to form a cooling water channel.

3. The motor of claim 1, wherein magnetic-isolating baffles are further arranged at two ends of the rotor shaft, and the outer diameter of each magnetic-isolating baffle is the same as that of the corresponding end of the rotor shaft.

4. The electric machine of claim 1, further comprising: the flywheel, the center of the one end of rotor shaft is provided with the location boss, the flywheel cover is established on the location boss and end to be in the rotor shaft the terminal surface of one end.

5. The motor of claim 4, wherein a first mounting hole is formed in an end face of the one end of the rotor shaft, the flywheel is fixed to the one end of the rotor shaft through a first fastener, and the first fastener penetrates through the flywheel and is in threaded fit with the first mounting hole.

6. The electric machine of claim 4, further comprising: the clutch driving disc is fixedly connected with the flywheel through a second fastener, a second mounting hole is formed in the flywheel, and the second fastener penetrates through the clutch driving disc and is in threaded fit with the second mounting hole.

7. The motor of claim 6, wherein the flywheel is provided with a positioning pin hole, and the clutch driving disc is provided with a positioning pin matched with the positioning pin hole.

8. The electric machine of claim 6, further comprising: the clutch driven disc is arranged between the clutch driving disc and the flywheel and is suitable for being pressed on the clutch driving disc to realize torque transmission.

9. The electric machine of claim 8, wherein the clutch driven plate is pressed against the clutch driving plate by a pressure generated by pretensioning of a third fastener.

10. A vehicle, characterized in that it comprises an electric machine according to any one of claims 1-9.