CN219204264U - Motor end structure, motor, electric drive system and power device - Google Patents

Abstract

The application provides a motor end structure, a motor, an electric drive system and a power device. The motor end structure includes: the end cover is provided with a shaft hole into which a non-load end of a rotating shaft of the motor extends; the sealing cover is arranged on the shaft hole; the guide plate is supported on the sealing cover and is provided with a guide pipe, and one end of the guide pipe is connected with an inner hole formed in the axial direction of the rotating shaft; the sealing cover is provided with a diversion channel, one end of the diversion channel is communicated with the other end of the diversion pipe, and the other end of the diversion channel is used for being connected with a cooling liquid supply pipeline. Therefore, when the cooling device is used, the flow guide pipe can be connected with the non-load end of the inner hole of the rotating shaft, the flow guide channel is connected with the cooling liquid supply pipeline, so that cooling liquid enters the inner hole from the non-load end of the rotating shaft to cool the rotating shaft, and the cooling liquid cannot be affected by heat of the load end connecting device when entering the inner hole, so that the loss of cooling capacity in the cooling liquid is reduced, and the utilization rate of cooling capacity is improved.

Description

Motor end structure, motor, electric drive system and power device

Technical Field

The application belongs to the technical field of electric drive, and particularly relates to a motor end structure, a motor, an electric drive system and a power device.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. The electric drive system is the power source of the electric vehicle, and the electric machine is the power structure of the electric drive system. Thus, smooth operation of the motor is a precondition for ensuring normal operation of the electric vehicle.

In order to ensure stable operation of the motor, good cooling of a rotor of the motor needs to be ensured, however, the current motor has low utilization rate of cold energy of cooling liquid, and efficiency of the motor is affected.

Disclosure of Invention

An objective of the embodiments of the present application is to provide a motor end structure, a motor, an electric drive system and a power device, including but not limited to solving the problem of low cold energy utilization rate of a motor in the related art.

In a first aspect, embodiments of the present application provide a motor end structure, comprising:

the end cover is arranged on the shell of the motor and is provided with a shaft hole into which a non-load end of a rotating shaft of the motor extends;

the sealing cover is arranged on the shaft hole;

the guide plate is supported on the sealing cover and is provided with a guide pipe, and one end of the guide pipe is connected with an inner hole formed in the axial direction of the rotating shaft;

The sealing cover is provided with a diversion channel, one end of the diversion channel is communicated with the other end of the diversion pipe, and the other end of the diversion channel is used for being connected with a cooling liquid supply pipeline.

In the technical scheme of this embodiment, through set up the shaft hole on the end cover, so that the non-load end of the pivot of motor stretches into, set up the guide plate on the closing cap, and set up the honeycomb duct on the guide plate, in order to stretch into the shaft hole with the water conservancy diversion, and set up the water conservancy diversion passageway on the closing cap, thereby during the use, can link to each other the non-load end of honeycomb duct and the hole of pivot, water conservancy diversion passageway connection coolant liquid supply line, thereby can make the coolant liquid get into the hole from the non-load end of pivot, in order to cool off the pivot, when the coolant liquid gets into the hole like this, can not receive the thermal influence of load end connecting device, in order to reduce the loss of coolant liquid cold volume, promote the utilization ratio of cold volume.

In some embodiments, a receiving slot is provided in one of the end cap and the cover, and the baffle is disposed in the receiving slot.

Through above-mentioned structural design, set up the storage tank to the holding guide plate, be convenient for fix a position the guide plate and install, convenient equipment can promote the integrated level moreover, reduces the volume.

In some embodiments, along the depth direction of the receiving groove: the width of the opening of the containing groove is smaller than that of the bottom of the containing groove, and the edge of the guide plate is matched with the containing groove.

Through the structural design, when the guide plate is matched and installed in the accommodating groove, the side wall of the accommodating groove can position and clamp the edge of the guide plate, so that the guide plate is prevented from falling off, and the assembly is convenient.

In some embodiments, the cross section of the side wall of the accommodating groove is a straight line segment, a curved line segment or a broken line segment.

Through the structural design, the cross section of the side wall of the accommodating groove is a straight line section, so that the accommodating groove can be conveniently manufactured; the cross section of the side wall of the accommodating groove is a curve section, so that the surface of the side wall is smoother, and the installation of the guide plate is facilitated; the cross section of the side wall of the accommodating groove is a folded section, so that the processing and the manufacturing can be facilitated on one hand, and the installation of the guide plate can be facilitated on the other hand.

In some embodiments, the edge of the baffle is clamped between the cover and the end cap.

Through above-mentioned structural design, with the edge centre gripping of guide plate between closing cap and end cover, when being fixed in the closing cap on the end cover like this, can the centre gripping fixed guide plate, and then support the honeycomb duct, the equipment is convenient.

In some embodiments, a flow guiding cavity is formed between the flow guiding plate and the sealing cover, the flow guiding pipe is communicated with the flow guiding cavity, and one end of the flow guiding channel is communicated with the flow guiding cavity.

Through above-mentioned structural design, form the water conservancy diversion chamber between guide plate and closing cap, be convenient for communicate water conservancy diversion passageway and honeycomb duct, also convenient processing preparation moreover.

In some embodiments, a first groove is formed on the surface of the sealing cover facing the end cover, and a diversion cavity is formed between the bottom of the first groove and the diversion plate.

Through above-mentioned structural design, set up first recess on the closing cap to make between the bottom of first recess and the guide plate form the water conservancy diversion chamber.

In some embodiments, the surface of the end cover facing the sealing cover is provided with a second groove forming a flow guiding cavity, and the flow guiding plate is arranged in the second groove.

Through above-mentioned structural design, set up the second recess on the end cover, and install the guide plate in the second recess, both be convenient for fix a position and install the guide plate, promote the integrated level, make the inside of second recess form the water conservancy diversion chamber moreover, simple structure is convenient for make.

In some embodiments, the baffle and draft tube are of unitary construction.

Through the structural design, the honeycomb duct can be conveniently processed and manufactured, for example, the honeycomb duct can be directly punched on the guide plate, and the honeycomb duct is convenient to manufacture and high in efficiency.

In some embodiments, a gasket is provided between the cover and the end cap.

Through above-mentioned structural design, through setting up sealed pad to guarantee the good seal between closing cap and the end cover, promote sealing performance, prevent that the coolant liquid from leaking.

In some embodiments, the diversion channel is disposed along a radial extension of the cover.

Through above-mentioned structural design, radial setting with the water conservancy diversion passageway along the closing cap can reduce the holistic volume of motor end structure, promotes the integrated level, lightens the weight of closing cap.

In some embodiments, the cover is provided with a conduit portion in which the flow-guiding channel is provided.

Through above-mentioned structural design, set up pipe portion on the closing cap to set up the water conservancy diversion passageway in pipe portion, processing is convenient, can lighten the weight of closing cap under the prerequisite of guaranteeing closing cap structural strength moreover, and then lighten the weight of motor end structure.

In some embodiments, a drainage channel is provided in the end cap, one end of the drainage channel is communicated with the drainage channel, and the other end of the drainage channel is used for connecting a cooling liquid supply pipeline.

Through above-mentioned structural design, set up drainage channel on the end cover, can make things convenient for, promote the integrated level, also be convenient for with coolant liquid supply line and honeycomb duct intercommunication.

In some embodiments, the cover is provided with a connecting pipe, the connecting pipe penetrates through the cover along the axial direction of the shaft hole, a diversion channel is formed inside the connecting pipe, and the connecting pipe is used for connecting the cooling liquid supply pipeline.

Through above-mentioned structural design, set up the connecting pipe on the closing cap to form the water conservancy diversion passageway, can be convenient with the coolant liquid supply line, be convenient for assemble and use.

In a second aspect, an embodiment of the present application provides a motor, including a main casing, a rotating shaft and a motor end structure according to any one of the embodiments described above, where the rotating shaft is installed in the main casing, the rotating shaft has a load end and a non-load end, the end cover is installed on the main casing at one end near the non-load end, the rotating shaft is provided with an inner hole along an axial direction, the load end is used for connecting a load, and one end of the flow guide pipe is communicated with one end of the inner hole corresponding to the non-load end.

In the technical scheme of this embodiment, through setting up the hole in the pivot to with the non-load end of pivot and the honeycomb duct connection in the end cover, then during the use, the coolant liquid can get into the hole from the non-load end of pivot through the honeycomb duct, in order to cool off the pivot, when the coolant liquid gets into the hole like this, can not receive the thermal influence of load end connecting device, in order to reduce the loss of cold volume in the coolant liquid, promote the utilization ratio of cold volume.

In a third aspect, an embodiment of the present application provides an electric drive system, including the electric motor according to any one of the embodiments above.

In a fourth aspect, embodiments of the present application provide a power plant including an electric drive system according to any one of the embodiments described above.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required for the description of the embodiments or exemplary techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

FIG. 2 is a schematic side view of an electro-drive system according to some embodiments of the present application;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged schematic cross-sectional view of the motor end structure of FIG. 3;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a schematic cross-sectional view of an end structure of a motor according to further embodiments of the present application;

FIG. 7 is a schematic cross-sectional structural view of an end structure of a motor according to further embodiments of the present application;

FIG. 8 is an enlarged view of portion C of FIG. 7;

FIG. 9 is a schematic cross-sectional view of an end structure of a motor according to further embodiments of the present application;

FIG. 10 is a schematic cross-sectional structural view of an end structure of a motor according to further embodiments of the present application;

FIG. 11 is a schematic cross-sectional structural view of an end structure of a motor according to some embodiments of the present application;

FIG. 12 is a schematic cross-sectional structural view of an electro-drive system according to some embodiments of the present application;

FIG. 13 is an enlarged schematic cross-sectional view of the motor end structure of FIG. 7;

fig. 14 is a schematic cross-sectional view of an end structure of a motor according to further embodiments of the present application.

Wherein, each reference numeral in the figure mainly marks:

1000-vehicle; 1001-an electric drive system; 1002-a controller; 1003-battery;

100-motor; 10-a shell; 101-a receiving chamber; 11-a main housing; 111-a support; 1111-opening; 112-an extension channel;

12-motor end structure; 1201-a flow-guiding chamber; 1202-receiving slots; 121-end caps; 1211-shaft hole; 1212-drainage channels; 1213-a second groove; 122-deflector; 1221-draft tube; 123-capping; 1230—a diversion channel; 1231-a conduit portion; 1232-connecting tube; 1233-first groove; 124-gasket;

21-a stator; 22-rotor; 221-rotating shaft; 2210-inner bore; 2211—a non-load side; 2212—a load side;

31-a first bearing; 32-a second bearing;

41-a booster pump; 42-a cooler; 43-a coolant supply line; 44-return pipe.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments in any suitable manner.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two). The meaning of "a number" is one or more than one unless specifically defined otherwise.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or be integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of embodiments of the present application, when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element unless explicitly stated and limited otherwise. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of embodiments of the present application, the technical term "adjacent" refers to in close proximity unless explicitly specified and defined otherwise. For example A ₁ 、A ₂ And three parts B, A ₁ Distance from B is greater than A ₂ Distance from B, then A ₂ Comparative A ₁ For A ₂ Closer to B, i.e. A ₂ Adjacent to B, also known as B adjacent to A ₂ . For another example, when there are a plurality of C-parts, the C-parts are C ₁ 、C ₂ ……C _N When one of the C-parts, e.g. C ₂ Closer to part B than other C partsPart, then B is adjacent to C ₂ C can also be said to be ₂ Adjacent B.

A driving structure using a motor as a power source is generally called an electric drive. The motor is integrated with the cooling device to form an electric drive system. The motor comprises a stator and a rotor, and the rotor is driven to rotate through the stator so as to convert electric energy into mechanical energy, and accordingly torque is output outwards. When the stator drives the rotor to rotate, the stator can generate heat, and the motor needs to be cooled down. In order to ensure the normal operation of the motor, a cooling liquid needs to be supplied to take away the heat in the stator and the rotor.

From the above, in order to ensure smooth operation of the electric drive system, good cooling is required. Therefore, a cooling liquid path is arranged in the motor, the cooling liquid path is connected with the cooler, and a booster pump is arranged to pump the cooling liquid so as to realize circulation of the cooling liquid and take away heat generated during operation.

When the rotor is cooled in the current motor, the cooling liquid is generally pressurized by the booster pump and then cooled by the cooler, and then enters the load such as the transmission and the like and then enters the rotor of the motor to cool the rotor. However, in this design, the cooling liquid loses the lubrication cooling capacity when passing through each component, so that the cooling capacity utilization rate is low, and the power of the cooler is high.

Coldness is a concept of energy or units of energy. The cooling capacity is the total energy value of the heat consumed by the refrigeration equipment or the heat conduction facility (such as a chiller) by the refrigeration in a unit time or a period of time by the heat derived from the target space.

Based on the above-mentioned consideration, in order to solve the lower problem of motor to cold volume utilization ratio, this application embodiment provides a motor end structure, through installing the guide plate on the end cover, set up the honeycomb duct on the guide plate, stretch into the shaft hole of end cover with the honeycomb duct in, so as to link to each other with the non-load end of the hole of motor pivot, and set up the water conservancy diversion passageway on the closing cap, in order to be used for connecting coolant liquid supply line, and make water conservancy diversion passageway and honeycomb duct intercommunication, can make the coolant liquid get into the rotor from the one end that the load was kept away from to the pivot like this, in order to cool down the rotor, can reduce or avoid the influence of the heat of devices such as load to the coolant liquid, reduce cold volume loss, promote the utilization ratio to the cold volume.

The electric drive system disclosed by the embodiment of the application can be used for a power source of a power device, such as an electric tool, an electric bicycle, an electric automobile, a ship, a spacecraft and the like. Among other things, spacecraft may include airplanes, rockets, space shuttles, spacecraft, and the like.

For convenience of description, an embodiment of the present application is provided as a power device, which is described by taking a vehicle as an example.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a new energy vehicle, which may be a pure electric vehicle, a hybrid vehicle, or an extended range vehicle. The vehicle 1000 is provided with an electric drive system 1001 inside, and the electric drive system 1001 may be provided at the bottom or at the head or at the tail of the vehicle 1000 for driving the vehicle 1000 to travel. The vehicle 1000 may also include a controller 1002 and a battery 1003, the controller 1002 being configured to control operation of the electric drive system 1001, the battery 1003 being configured to power the electric drive system 1001.

Referring to fig. 2 to 5, fig. 2 is a schematic side view of an electro-driving system 1001 according to some embodiments of the present application. Fig. 3 is a schematic cross-sectional view of an electro-drive system 1001 according to some embodiments of the present application, with a section line indicated by line A-A in fig. 2. Fig. 4 is an enlarged view of the motor end structure 12 of fig. 3. Fig. 5 is an enlarged view of a portion B in fig. 4.

An electric drive system 1001 includes a motor 100, a booster pump 41, a coolant supply line 43, and a cooler 42.

The booster pump 41 is a pump member for pressurizing the coolant to pump the coolant. The booster pump 41 may be a gear pump, a vane pump, a piston pump, a centrifugal pump, or the like, and is not limited thereto.

The coolant supply line 43 refers to a channel for guiding the flow of the coolant in the electric drive system 1001.

The cooler 42 is a device for cooling the coolant, and the cooler 42 may be an air-cooling device, a heat exchanger, a semiconductor refrigeration device, or the like, and is not limited thereto.

The motor 100 is a power source of the electric drive system 1001, and refers to an electromagnetic device that converts or transmits electric energy according to the law of electromagnetic induction.

The motor 100 of the embodiment of the present application is as follows:

an electric motor 100 includes a housing 10, a stator 21, a rotor 22, and a motor end structure 12, the rotor 22 being located in the stator 21, the rotor 22 being driven to rotate by the stator 21 to achieve a power output. A receiving chamber 101 is formed in the casing 10 to receive and mount the rotor 22 and the stator 21 through the receiving chamber 101. The rotor 22 and the stator 21 are both installed in the casing 10, and the rotor 22 and the stator 21 are supported and protected by the casing 10.

The rotor 22 includes a rotation shaft 221, and the rotation shaft 221 is a shaft member provided at the center of the rotor 22. The rotation shaft 221 is provided to transmit power through the rotation shaft 221, and the rotation shaft 221 is rotatably installed in the casing 10 to support the rotation shaft 221 and thus the rotor 22 through the casing 10.

An inner hole 2210 is provided in the rotation shaft 221, and the inner hole 2210 refers to a hole structure provided in the rotation shaft 221. The inner bore 2210 extends along the axial direction of the rotating shaft 221, and the coolant supply line 43 is connected to the inner bore 2210 of the rotating shaft 221, so that the cooled coolant can enter the rotating shaft 221 to cool the rotor 22.

The rotating shaft 221 has a load end 2212 and a non-load end 2211, the load end 2212 and the non-load end 2211 are opposite ends of the rotating shaft 221, and the load end 2212 is used for connecting loads, for example, the load end 2212 can be connected with an external member to be driven, and can also be connected with loads such as a transmission. Since the rotating shaft 221 is an output shaft of the motor 100, the load end 2212 of the rotating shaft 221 is also the load end 2212 of the motor 100, and the non-load end 2211 of the rotating shaft 221 is also the non-load end 2211 of the motor 100.

The housing 10 includes a main casing 11 and a motor end structure 12, the main casing 11 being a main casing of the motor 100. The stator 21 and the rotor 22 are mounted in the main casing 11, the motor end structure 12 is mounted on the main casing 11, and the motor end structure 12 is located at the non-load end 2211 of the rotary shaft 221 to cooperate with the main casing 11 to support and protect the stator 21 and the rotor 22.

The structure of the motor end structure 12 of the embodiment of the present application is as follows:

the motor end structure 12 includes an end cap 121, a cover 123, and a baffle 122. The end cap 121 is provided with a shaft hole 1211, and in use, the non-load end 2211 of the rotating shaft 221 extends into the shaft hole 1211, and the non-load end 2211 of the rotating shaft 221 is supported by the end cap 121, so that the rotating shaft 221 can rotate smoothly. The cover 123 is mounted on the end cover 121, the cover 123 is covered on the shaft hole 1211, and the deflector 122 is supported on the cover 123. A cover 123 is provided on the end cap 121 to provide a good seal and protection against foreign matter entering the casing 10 of the motor 100. The baffle 122 is supported on the cover 123, which in turn supports the baffle 122 on the end cap 121. The deflector 122 is provided with a flow guide 1221, in use, one end of the flow guide 1221 is connected to the inner bore 2210 of the shaft 221 of the motor, and since the end cap 121 is located at the rotating non-load end 2211, the flow guide 1221 is connected to the non-load end 2211 of the inner bore 2210 of the shaft 221. The cover 123 is provided with a diversion channel 1230, one end of the diversion channel 1230 is communicated with the other end of the diversion pipe 1221, and the other end of the diversion channel 1230 is used for connecting the cooling liquid supply pipeline 43 so as to guide the cooling liquid to enter the rotating shaft 221 from the non-load end 2211 of the rotating shaft 221 through the diversion pipe 1221, so as to cool the rotating shaft 221 and further cool the rotor 22.

The end cap 121 is a cap structure provided on the main casing 11. In use, the end cap 121 is mounted to the main housing 11 and the end cap 121 is positioned at the non-load end 2211 of the motor 100. The shaft hole 1211 of the end cap 121 refers to a hole structure formed in the end cap 121.

The cover 123 is a cover structure that covers the shaft hole 1211 of the end cover 121, and in use, the cover 123 is mounted on the end cover 121 so as to cover the shaft hole 1211. The flow guide channel 1230 on the cover 123 refers to a channel structure provided in the cover 123 for guiding the flow of the liquid. One end of the flow guiding channel 1230 is connected to the flow guiding tube 1221, and the other end of the flow guiding channel 1230 is connected to the cooling liquid supply line 43.

The baffle 122 is a plate structure supported on the cover 123. The flow guide pipe 1221 refers to a pipe for guiding the flow of liquid. The flow guide 1221 is disposed on the flow guide plate 122, and the flow guide 1221 is supported by the flow guide plate 122, and the flow guide 1221 is further supported on the end cover 121, so that the flow guide 1221 extends into the shaft hole 1211.

One end of the flow guide tube 1221 is used for connecting the inner hole 2210 of the rotating shaft 221 of the motor, that is, when the end cover 121 is covered on the main housing 11 in use, the flow guide tube 1221 is connected with one end, close to the non-load end 2211, of the inner hole 2210 of the rotating shaft 221, while the other end of the flow guide tube 1221 is communicated with the flow guide channel 1230, and the flow guide channel 1230 is used for connecting the cooling liquid supply pipeline 43, so that the non-load end 2211 of the rotating shaft 221 is connected with the cooling liquid supply pipeline 43, so that the cooling liquid in the cooling liquid supply pipeline 43 can enter the inner hole 2210 of the rotating shaft 221 from the non-load end 2211 to cool the rotating shaft 221, the influence of load on the cooling liquid can be reduced, and the utilization rate of the cooling liquid can be improved.

In use, the inlet of the booster pump 41 communicates with the end of the bore 2210 near the load end 2212. One end of the coolant supply line 43 is connected to the outlet of the booster pump 41, and the other end of the coolant supply line 43 is connected to the diversion passage 1230 and is connected to one end of the inner bore 2210 near the non-load end 2211 via the diversion pipe 1221. The cooler 42 is provided on the coolant supply line 43 to cool the coolant in the coolant supply line 43. The booster pump 41 pressurizes the coolant into the coolant supply pipeline 43, cools the coolant through the cooler 42, and then flows into the guide pipe 1221 through the guide channel 1230, and then enters the inner hole 2210 from the non-load end 2211 of the rotating shaft 221 to cool the rotating shaft 221, and then flows back to the booster pump 41 from one end of the inner hole 2210 close to the load end 2212, so as to realize circulation of the coolant and cooling of the rotating shaft 221, further realize cooling of the motor 100, improve the utilization rate of cold energy and reduce energy consumption.

In the technical solution of this embodiment, through setting up shaft hole 1211 on end cover 121 for the non-load end 2211 of the pivot 221 of motor stretches into, set up guide plate 122 on closing cap 123, and set up honeycomb 1221 on guide plate 122, in order to stretch into shaft hole 1211 with the water conservancy diversion, and set up water conservancy diversion passageway 1230 on closing cap 123, thereby during the use, can link to each other the non-load end 2211 of the hole 2210 of pivot 221 with honeycomb 1221, water conservancy diversion passageway 1230 connects coolant supply line 43, thereby can make the coolant get into hole 2210 from the non-load end 2211 of pivot 221, in order to cool down pivot 221, can not receive the influence of load end 2212 connecting device heat when the coolant gets into hole 2210 like this, in order to reduce the loss of coolant cold volume, promote the utilization ratio of cold volume.

In the technical solution of the present embodiment, through setting up hole 2210 in pivot 221 to be close to the one end that does not load end 2211 with hole 2210 and link to each other with honeycomb duct 1221, and then be connected with coolant supply line 43, thereby can make the coolant liquid get into hole 2210 from the non-load end 2211 of pivot 221, in order to cool off pivot 221, when the coolant liquid gets into hole 2210 like this, can not receive the influence of load end 2212 connecting device heat, in order to reduce the loss of coolant liquid cold volume, promote the utilization ratio of cold volume.

In the technical scheme of this embodiment, after pressurizing the coolant through booster pump 41, pump to coolant supply line 43, coolant in coolant supply line 43 flows through cooler 42 cooling, coolant after the cooling flows through guide channel 1230 and honeycomb duct 1221, get into hole 2210 from the non-load end 2211 of pivot 221 to cool down pivot 221, then follow hole 2210 and be close to the one end backward flow of load end 2212 to booster pump 41, in order to realize the circulation of coolant, and cool down to pivot 221, and then realize the cooling to motor 100, promote the utilization ratio to the cold volume, reduce the energy consumption.

In some embodiments, the baffle 122 and the flow guide 1221 are integrally formed, which can be conveniently processed and manufactured, for example, the flow guide 1221 can be directly punched on the baffle 122, which is convenient to manufacture and has high efficiency.

In some embodiments, the baffle 122 may be manufactured separately from the baffle 122, and the flow conduit 1221 may be fixed to the baffle 122 by welding or the like.

In some embodiments, the surface of the cover 123 facing the end cap 121 is provided with a receiving groove 1202, and the baffle 122 is disposed in the receiving groove 1202. The accommodating groove 1202 is formed in the sealing cover 123 to accommodate the guide plate 122, so that the guide plate 122 is convenient to position and install, convenient to assemble, capable of improving the integration level and reducing the volume.

The depth direction of the accommodating groove 1202 refers to the direction from the mouth of the accommodating groove 1202 to the bottom of the accommodating groove 1202. The mouth of the accommodating groove 1202 refers to an end of the accommodating groove 1202 away from the bottom surface of the accommodating groove 1202. The bottom of the accommodating groove 1202 refers to the bottom of the accommodating groove 1202 in the depth direction. The depth direction of the accommodating groove 1202 on the cover 123 refers to the direction from the surface of the cover 123 toward the end cap 121 to the surface away from the end cap 121.

In some embodiments, along the depth of the pocket 1202: the width of the mouth of the accommodating groove 1202 is smaller than the width of the bottom of the accommodating groove 1202, that is, the side wall of the accommodating groove 1202 extends away from the rotation axis 221. The edge of the deflector 122 is adapted to the receiving slot 1202. The width of the opening of the accommodating groove 1202 is smaller than the width of the bottom of the accommodating groove 1202, so that when the guide plate 122 is installed in the accommodating groove 1202 in a matched manner, the side wall of the accommodating groove 1202 can be positioned and clamped at the edge of the guide plate 122, thereby preventing the guide plate 122 from falling off and facilitating assembly.

In some embodiments, the cross section of the side wall of the accommodating groove 1202 is parallel to the depth direction of the accommodating groove 1202, and the cross section of the side wall of the accommodating groove 1202 is transverse to the cross section of the side wall of the accommodating groove 1202, and the cross section of the side wall of the accommodating groove 1202 is also on the cross section, so that the side wall of the accommodating groove 1202 is a straight line section, and the accommodating groove 1202 is convenient to design and process.

In some embodiments, the cross-section of the side wall of the pocket 1202 is curved, which may provide smoother side wall surfaces to facilitate installation of the baffle 122.

In some embodiments, the cross section of the side wall of the accommodating groove 1202 is a folded section, so that on one hand, the processing and the manufacturing can be facilitated, and on the other hand, the installation of the deflector 122 can be facilitated.

In some embodiments, the cross-section of the receiving slot 1202 may be configured in a trapezoid, T-shape, etc. to retain the fixed baffle 122.

In some embodiments, a flow guiding cavity 1201 is formed between the flow guiding plate 122 and the cover 123, the flow guiding tube 1221 is communicated with the flow guiding cavity 1201, and one end of the flow guiding channel 1230 is communicated with the flow guiding cavity 1201. The flow guiding cavity 1201 is formed between the flow guiding plate 122 and the sealing cover 123, so that the flow guiding channel 1230 and the flow guiding pipe 1221 are convenient to communicate, and the processing and the manufacturing are also convenient.

In some embodiments, the cover 123 is provided with a first groove 1233, the first groove 1233 being located on the surface of the cover 123 facing the end cap 121. A flow guiding cavity 1201 is formed between the bottom of the first groove 1233 and the flow guiding plate 122. The first groove 1233 is disposed on the cover 123, so that a flow guiding cavity 1201 is formed between the bottom of the first groove 1233 and the flow guiding plate 122, and processing and manufacturing of the flow guiding cavity 1201 are facilitated.

In some embodiments, the baffle 122 is mounted on the cover 123, and the cover 123 is provided with a first groove 1233, such that a flow guiding cavity 1201 is formed between the bottom of the first groove 1233 and the baffle 122.

In some embodiments, when the cover 123 is provided with the accommodating groove 1202, the bottom of the accommodating groove 1202 may be provided with the first groove 1233, so that the space of the first groove 1233 forms the flow guiding cavity 1201.

In some embodiments, the first groove 1233 is located on the cover 123 corresponding to the middle area of the baffle 122, so that the baffle 122 covers the first groove 1233, and thus the cooling oil flowing out of the flow guiding channel 1230 enters the first groove 1233 and further enters the inner hole 2210 of the rotating shaft 221, so as to facilitate assembly.

In some embodiments, the flow directing channels 1230 are disposed along a radial extension of the cover 123. The flow guide channel 1230 is arranged along the radial direction of the sealing cover 123, so that the whole volume of the motor end structure 12 can be reduced, the integration level is improved, and the weight of the sealing cover 123 is reduced.

In some embodiments, the cover 123 has a conduit portion 1231, and the flow guiding channel 1230 is disposed in the conduit portion 1231. The guide pipe part 1231 is arranged on the sealing cover 123, so that the guide pipe passage 1230 is arranged in the guide pipe part 1231, the processing is convenient, and the weight of the sealing cover 123 and the weight of the motor end part structure 12 can be reduced on the premise of ensuring the structural strength of the sealing cover 123.

In some embodiments, the thickness of the cover 123 may be set larger, and the thickness of the cover 123 refers to the thickness along the axial direction of the rotation shaft 221. The thickness of the sealing cover 123 is set larger, so that the diversion channel 1230 can be directly processed in the sealing cover 123, thereby being convenient for processing and manufacturing the sealing cover 123.

In some embodiments, a drainage channel 1212 is provided in the end cap 121, the drainage channel 1212 being a channel structure provided in the end cap 121 for guiding the flow of liquid. One end of the drainage channel 1212 communicates with the drainage channel 1230, and the other end of the drainage channel 1212 is adapted to be connected to the coolant supply line 43. With this structure, the integration level can be improved, the coolant supply pipe 43 can be communicated with the drainage channel 1212 of the end cover 121, the coolant supply pipe 43 can be conveniently communicated with the flow guide 1221, the length of the coolant supply pipe 43 can be shortened to a certain extent, and the volume can be reduced.

In some embodiments, the cooling fluid may be a lubricating oil, or a liquid such as water may be used.

In some embodiments, the shaft hole 1211 is provided with a first bearing 31, and the first bearing 31 is sleeved on the rotating shaft 221. The first bearing 31 is provided in the shaft hole 1211, and can well support the end of the rotation shaft 221 for rotation.

In some embodiments, a support 111 is provided at an end of the main housing 11 remote from the end cap 121, an opening 1111 is provided in the support 111, and the rotation shaft 221 passes through the opening 1111 so that the rotation shaft 221 is connected to a load. In addition, the rotating shaft 221 may be supported by the supporting portion 111 so as to support both ends of the rotating shaft 221 in cooperation with the end caps 121, thereby facilitating smooth rotation of the rotating shaft 221.

In some embodiments, the second bearing 32 is installed in the opening 1111, and the second bearing 32 is sleeved on the rotating shaft 221 to stably support the rotating shaft 221, so that the rotating shaft 221 stably rotates.

In some embodiments, the rotation shaft 221 may be supported by the first bearing 31 in cooperation with the second bearing 32 to smoothly rotate the rotation shaft 221.

In some embodiments, the supporting portion 111 may be integrally formed with the main housing 11, so as to facilitate processing and manufacturing, and ensure the connection strength between the supporting portion 111 and the main housing 11.

In some embodiments, the support 111 and the main housing 11 may be manufactured separately, and then the support 111 and the main housing 11 may be connected.

In some embodiments, the cover 123 is provided with a diversion channel 1230, the end cover 121 is provided with a diversion channel 1212, the main shell 11 is provided with an extension channel 112, one end of the diversion channel 1230 is communicated with the diversion pipe 1221, the other end of the diversion channel 1230 is communicated with the diversion channel 1212, one end of the extension channel 112 is connected with the diversion channel 1212, and the other end of the extension channel 112 is used for connecting the cooling liquid supply pipeline 43, so that the diversion channel 1230, the diversion channel 1212 and the extension channel 112 are integrated in the shell 10, the integration level is improved, the processing and the manufacturing are also convenient, the length of the cooling liquid supply pipeline 43 can be shortened, and the volume is reduced. The extension passage 112 refers to a passage structure provided in the main casing 11 for guiding the flow of the liquid.

In some embodiments, the extension channel 112 extends in the axial direction of the main housing 11 for machining.

In some embodiments, referring to fig. 3, the inlet of the booster pump 41 may be connected to the end of the inner bore 2210 near the load end 2212 through the return pipe 44, so that the coolant at the load end 2212 of the rotating shaft 221 may flow back to the booster pump 41. It will be appreciated that a sealing cover may be provided to cover the load end 2212 of the rotating shaft 221, so that a backflow space may be formed at the bottom of the main casing 11, so that the backflow coolant may enter the booster pump 41 to circulate the coolant.

In some embodiments, referring to fig. 3, the inner bore 2210 extends through the rotating shaft 221 along the axial direction of the rotating shaft 221, that is, two ends of the inner bore 2210 extend onto two end surfaces of the rotating shaft 221, that is, one end of the inner bore 2210 extends to the end surface of the load end 2212, and the other end of the inner bore 2210 extends to the end surface of the non-load end 2211, so that the inner bore 2210 forms a through hole structure extending along the axial direction of the rotating shaft 221, and thus, cooling liquid can enter from the non-load end 2211 of the rotating shaft 221 and flow out from the load end 2212, so that the cooling liquid flows through the entire rotating shaft 221 along the axial direction of the rotating shaft 221 to cool the rotating shaft 221 better, improve the cooling effect, and facilitate processing and manufacturing.

In some embodiments, the inner diameter of the inner bore 2210 corresponding to the load end 2212 is greater than the inner diameter of the inner bore 2210 corresponding to the non-load end 2211. Since the motor 100 generates a large centrifugal force inside the rotating shaft 221 during operation, and the inner bore 2210 is a through hole structure formed in the rotating shaft 221, the cooling liquid at two ends of the inner bore 2210 also has a centrifugal force, which causes a certain back pressure at one end of the inner bore 2210 near the non-load end 2211. When the diameter of the inner bore 2210 corresponding to the end of the non-load end 2211 is set smaller, the centrifugal force of the cooling liquid in the inner bore 2210 near the non-load end 2211 is smaller than that of the cooling liquid in the load end 2212 of the inner bore 2210, so that the cooling liquid flows out of the end of the inner bore 2210 corresponding to the load end 2212 more easily, a negative pressure is formed in the inner bore 2210, and the farther the axial direction of the rotating shaft 221 is from the non-load end 2211, the larger the negative pressure is, so that the cooling liquid can smoothly pass through the inner bore 2210 along the axial direction of the rotating shaft 221, the backflow of the cooling liquid is avoided or reduced, and the cooling effect is improved.

In some embodiments, the flow conduit 1221 is a clearance fit with the bore 2210, with the diameter of the end of the bore 2210 near the loaded end 2212 being greater than the diameter of the end of the bore 2210 near the unloaded end 2211. This may make it easier for the lubricant to flow out of the end of the inner bore 2210 corresponding to the load end 2212, reducing or avoiding the lubricant from flowing back from the gap between the flow guide tube 1221 and the inner surface of the inner bore 2210, thereby reducing the cooling loss of the lubricant and improving the cooling utilization rate.

Referring to fig. 6, fig. 6 is a schematic cross-sectional view of an end structure 12 of a motor according to some embodiments of the present application.

In some embodiments, referring to fig. 4 and 6, the cover 123 is provided with a diversion channel 1230, and the end cover 121 is not provided with a diversion channel 1212, so that one end of the diversion channel 1230 is connected to the diversion pipe 1221, and the other end of the diversion channel 1230 is used for connecting the cooling liquid supply pipeline 43, thereby simplifying the structure and facilitating the processing and manufacturing.

Referring to fig. 7 and 8, fig. 6 is a schematic cross-sectional view of a motor end structure 12 according to some embodiments of the present application. Fig. 8 is an enlarged view of a portion C in fig. 7.

In some embodiments, the surface of the end cap 121 facing the cover 123 is provided with a receiving groove 1202, and the baffle 122 is disposed in the receiving groove 1202. The accommodating groove 1202 is formed in the end cover 121 to accommodate the guide plate 122, so that the guide plate 122 is convenient to position and install, convenient to assemble, capable of improving the integration level and reducing the volume.

The depth direction of the accommodating groove 1202 on the end cap 121 refers to the direction from the surface of the end cap 121 toward the cover 123 to the surface away from the cover 123.

In some embodiments, along the depth of the pocket 1202: the width of the mouth of the accommodating groove 1202 on the end cap 121 is smaller than the width of the bottom of the accommodating groove 1202, that is, the side wall of the accommodating groove 1202 extends away from the rotation axis 221. The edge of the deflector 122 is adapted to the receiving slot 1202. The width of the opening of the accommodating groove 1202 is smaller than the width of the bottom of the accommodating groove 1202, so that when the guide plate 122 is installed in the accommodating groove 1202 in a matched manner, the side wall of the accommodating groove 1202 can position and clamp the edge of the guide plate 122, thereby preventing the guide plate 122 from falling off and facilitating assembly.

In some embodiments, a cross-section along the depth direction of the receiving slot 1202, that is, the depth direction of the receiving slot 1202 is parallel to the cross-section, on which the side wall of the receiving slot 1202 may be provided in a straight line, a curved line, or a split line, which is not limited herein.

In some embodiments, the cross-section of the accommodating groove 1202 in the depth direction may be configured to have a trapezoid shape, a T-shape, etc. so as to clamp the fixed baffle 122.

In some embodiments, the baffle 122 is mounted on the end cap 121, and the cover 123 is provided with a first groove 1233, such that a flow guiding cavity 1201 is formed between the bottom of the first groove 1233 and the baffle 122.

Referring to fig. 9, fig. 9 is a schematic cross-sectional view of an end structure 12 of a motor according to some embodiments of the present application.

In some embodiments, the end cap 121 is provided with a second groove 1213, the second groove 1213 being located on a surface of the end cap 121 facing the cover 123. The inner space of the second recess 1213 forms a flow guide chamber 1201, and the flow guide plate 122 is installed in the second recess 1213. The second groove 1213 is formed on the end cover 121, and the deflector 122 is mounted in the second groove 1213, so that the deflector 122 is conveniently positioned and mounted, the integration level is improved, the deflector cavity 1201 is formed in the second groove 1213, and the structure is simple and the manufacture is convenient.

In some embodiments, when the end cover 121 is provided with the second groove 1213, a receiving groove 1202 may be provided at the bottom of the second groove 1213 to receive the deflector 122.

Referring to fig. 10, fig. 10 is a schematic cross-sectional view of an end structure 12 of a motor according to some embodiments of the present application.

In some embodiments, a gasket 124 is provided between the cover 123 and the end cap 121. By providing the gasket 124, good sealing between the cover 123 and the end cap 121 is ensured, sealing performance is improved, and leakage of the cooling liquid is prevented.

In some embodiments, the cover 123 may be fixed to the end cap 121 by sealing adhesive, so that not only the cover 123 is fixed to the end cap 121, but also a good seal between the cover 123 and the end cap 121 is ensured.

Referring to fig. 11, fig. 11 is a schematic cross-sectional view of an end structure 12 of a motor according to some embodiments of the present application.

In some embodiments, the edge of the baffle 122 is sandwiched between the cover 123 and the end cap 121. The edge of the deflector 122 is clamped between the cover 123 and the end cap 121, so that the deflector 122 can be clamped and fixed when the cover 123 is fixed on the end cap 121, and then the deflector 1221 is supported, so that the assembly is convenient. Of course, the baffle 122 may be fixed to the cover 123 by a screw or the like.

Referring to fig. 12 and 13, fig. 12 is a schematic cross-sectional structure of an electro-drive system 1001 according to some embodiments of the present application. Fig. 13 is an enlarged view of the motor end structure 12 of fig. 12.

In some embodiments, the cover 123 is provided with a connection pipe 1232, and the connection pipe 1232 is disposed through the cover 123 along the axial direction of the shaft hole 1211, that is, one end of the connection pipe 1232 is located at a side of the cover 123 near the end cap 121, and the other end of the connection pipe 1232 is located at a side of the cover 123 far from the end cap 121. Thereby forming the guide passage 1230 inside the connection pipe 1232 and also facilitating the connection of the connection pipe 1232 to the coolant supply line 43. The connecting pipe 1232 is disposed on the cover 123 to form the diversion channel 1230, which is convenient to be assembled with the cooling liquid supply pipeline 43.

In some embodiments, when the connection pipe 1232 extends out of the cover 123, the connection pipe 1232 and the cover 123 may be integrally formed, so as to facilitate manufacturing and ensure connection strength between the connection pipe 1232 and the cover 123.

In some embodiments, a through hole may be formed in the cover 123, the connection pipe 1232 may extend out of the cover 123 through the through hole, and the connection pipe 1232 may be fixed to the cover 123 by welding, bonding, or the like.

In some embodiments, when the flow guiding cavity 1201 is formed between the flow guiding plate 122 and the cover 123, the connection pipe 1232 may be communicated with the flow guiding cavity 1201, and further, be communicated with the flow guiding pipe 1221 through the flow guiding cavity 1201, so as to facilitate the design of the connection pipe 1232 and the assembly of the cover 123.

Referring to fig. 14, fig. 14 is a schematic cross-sectional view of an end structure 12 of a motor according to some embodiments of the present application.

In some embodiments, when the cover 123 is provided with the connecting pipe 1232, the connecting pipe 1232 can be directly connected with the flow guiding pipe 1221, so that the cooling liquid can be guided to the flow guiding pipe 1221, so that the cooling liquid can enter the inner hole 2210 of the rotating shaft 221 conveniently, the cooling loss of the cooling liquid is reduced, and the cooling utilization rate is improved.

According to some embodiments of the present application, there is provided a motor end structure 12 comprising an end cap 121, a cover 123, and a baffle 122. The end cover 121 is provided with a shaft hole 1211, the cover 123 is mounted on the end cover 121, the cover 123 is covered on the shaft hole 1211, and the flow guide pipe 1221 is supported on the cover 123. The deflector 122 is supported on the cover 123, the deflector 122 is provided with a deflector 1221, the deflector 1221 is used for being connected with the inner hole 2210 of the rotating shaft 221 of the motor, and since the end cover 121 is positioned at the rotating non-load end 2211, the deflector 1221 is connected with the non-load end 2211 of the inner hole 2210 of the rotating shaft 221. The cover 123 is provided with a diversion channel 1230, one end of the diversion channel 1230 is communicated with the diversion pipe 1221, and the other end of the diversion channel 1230 is used for being connected with the cooling liquid supply pipeline 43 to guide the cooling liquid to enter the inside of the rotating shaft 221 from the non-load end 2211 of the rotating shaft 221 through the diversion pipe 1221 so as to cool the rotating shaft 221 and further cool the rotor 22.

According to some embodiments of the present application, the present application provides a motor 100, including a main casing 11, a rotating shaft 221 and the motor end structure 12 described in any of the foregoing embodiments, where the rotating shaft 221 is installed in the main casing 11, the rotating shaft 221 has a load end 2212 and a non-load end 2211, the end cover 121 is installed on the main casing 11 at an end near the non-load end 2211, the rotating shaft 221 has an inner hole 2210 axially provided, the load end 2212 is used for connecting a load, and one end of the flow guiding tube 1221 is communicated with one end of the inner hole 2210 corresponding to the non-load end 2211. Through setting up hole 2210 in pivot 221 to with the non-load end 2211 of pivot 221 and the honeycomb duct 1221 in the end cover 121 are connected, then during the use, the coolant liquid can get into hole 2210 through honeycomb duct 1221 from the non-load end 2211 of pivot 221, in order to cool off pivot 221, when the coolant liquid gets into hole 2210 like this, can not receive the influence of load end 2212 connecting device heat, in order to reduce the loss of the cold volume in the coolant liquid, promote the utilization ratio of cold volume.

According to some embodiments of the present application, there is also provided an electric drive system 1001 comprising an electric machine 100 according to any of the above aspects. The electric drive system 1001 further includes a booster pump 41, a coolant supply line 43, and a cooler 42. The inlet of the booster pump 41 communicates with one end of the inner bore 2210 near the output end, one end of the coolant supply line 43 communicates with the outlet of the booster pump 41, the other end of the coolant supply line 43 communicates with the flow guide passage 1230, and the flow guide passage 1230 communicates with one end of the inner bore 2210 near the connection end via the flow guide pipe 1221. The cooler 42 is provided in the coolant supply line 43. After the booster pump 41 pressurizes the cooling liquid, the cooling liquid is pumped to the cooling liquid supply pipeline 43, the cooling liquid in the cooling liquid supply pipeline 43 is cooled by the cooler 42, the cooled cooling liquid enters the inner hole 2210 from the connecting end of the rotating shaft 221 so as to cool the rotating shaft 221, and then flows back to the booster pump 41 from one end, close to the output end, of the inner hole 2210 so as to realize circulation of the cooling liquid and cooling of the rotating shaft 221, further realize cooling of the motor 100, improve the utilization rate of cooling capacity and reduce energy consumption.

According to some embodiments of the present application, there is also provided a power plant comprising an electric drive system 1001 according to any of the above aspects.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (17)

1. An end structure of an electric motor, comprising:

the end cover is arranged on the shell of the motor and is provided with a shaft hole into which a non-load end of a rotating shaft of the motor extends;

The sealing cover is arranged on the shaft hole;

the guide plate is supported on the sealing cover, a guide pipe is arranged on the guide plate, and one end of the guide pipe is connected with an inner hole formed in the rotating shaft along the axial direction;

the sealing cover is provided with a diversion channel, one end of the diversion channel is communicated with the other end of the diversion pipe, and the other end of the diversion channel is used for being connected with a cooling liquid supply pipeline.

2. The motor end structure of claim 1, wherein one of said end cap and said cover has a receiving slot, said baffle being disposed in said receiving slot.

3. The motor end structure according to claim 2, wherein, in a depth direction of the accommodation groove: the width of the opening of the containing groove is smaller than the width of the bottom of the containing groove, and the edge of the guide plate is matched with the containing groove.

4. The motor end structure of claim 2, wherein the cross section of the side wall of the receiving groove is a straight line segment, a curved line segment or a broken line segment.

5. The motor end structure of claim 1 wherein an edge of said baffle is sandwiched between said cover and said end cap.

6. The motor end structure according to any one of claims 1 to 5, wherein a flow guiding chamber is formed between the flow guiding plate and the cover, the flow guiding pipe communicates with the flow guiding chamber, and one end of the flow guiding passage communicates with the flow guiding chamber.

7. The motor end structure of claim 6, wherein a first groove is formed on a surface of the cover facing the end cover, and the flow guiding cavity is formed between a bottom of the first groove and the flow guiding plate.

8. A motor end structure according to claim 6 or 7, wherein the surface of the end cap facing the cover is provided with a second recess forming the flow guiding chamber, and the flow guiding plate is mounted in the second recess.

9. The motor end structure according to any one of claims 1 to 5 and 7, wherein the deflector and the draft tube are integrally formed.

10. An end structure of an electric machine as claimed in any one of claims 1-5, 7, characterized in that a gasket is provided between the cover and the end cap.

11. An end structure of an electric machine as claimed in any one of claims 1-5, 7, characterized in that the flow guiding channel is arranged extending in a radial direction of the cover.

12. The motor end structure of claim 11 wherein said cover is provided with a conduit portion, said flow directing channel being provided in said conduit portion.

13. The motor end structure of claim 12, wherein a drainage channel is provided in the end cap, one end of the drainage channel is in communication with the drainage channel, and the other end of the drainage channel is used for connecting the coolant supply line.

14. A motor end structure according to any one of claims 1 to 5, 7, 12 to 13, wherein a connecting pipe is provided on the cover, the connecting pipe being provided through the cover in an axial direction of the shaft hole, an inside of the connecting pipe forming the flow guide passage, the connecting pipe being for connection to the coolant supply line.

15. An electric motor, comprising a main casing, a rotating shaft and an end structure of the electric motor according to any one of claims 1-14, wherein the rotating shaft is installed in the main casing, the rotating shaft has a load end and a non-load end, the end cover is installed on one end of the main casing near the non-load end, an inner hole is axially formed in the rotating shaft, the load end is used for connecting a load, and one end of the flow guide pipe is communicated with one end of the inner hole corresponding to the non-load end.

16. An electric drive system comprising the motor of claim 15.

17. A power plant, characterized in that: an electro-mechanical system comprising the system of claim 16.

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