CN213484687U - Rotating electric machine - Google Patents

Abstract

The utility model discloses a rotating electrical machine belongs to motor technical field. It includes: the motor rear cover is internally provided with a cavity; the rotating shaft is rotatably arranged on the rear cover of the motor; the rotor is connected to the rotating shaft; the stator is arranged in the cavity; an electronic assembly including a power module; a cooling fan installed on the rotation shaft; the heat blocking structure is connected to the rear end of the rear cover of the motor through a connecting structure, and the power module is installed at the rear end of the heat blocking structure; the peripheral side surface of the power module is provided with a plurality of radiating bosses which extend towards the outer side of the power module, and the heat retaining structure is provided with a plurality of supporting bulges which are in abutting connection with the radiating bosses; a gap is formed between the power module and the heat retaining structure to form a first cooling air inlet channel, when the cooling fan rotates, the first cooling air inlet channel can suck air from the peripheral side to form a first cooling air flow, and the first cooling air flow can flow through the first axial ventilation opening to enter the cavity. The utility model discloses a rotating electrical machines can be reliable dispels the heat.

Description

Rotating electric machine

Technical Field

The utility model relates to the technical field of electric machines, especially, relate to a rotating electrical machines.

Background

At present, rotating electric machines are applied to hybrid cars, electric cars, and the like; when the rotating motor is applied to a hybrid electric vehicle, the rotating motor is used for driving tires of the vehicle, the rotating motor is also used as a generator for charging a battery, the hybrid electric vehicle is easy to repeatedly start and stop in the driving process, the stator is easy to generate a large amount of heat, in addition, the stator is easy to generate a large amount of heat by high-speed rotation of the rotating motor, if the temperature rise of the stator is not inhibited, the stator in the rear cover of the motor generates heat radiation when the temperature of the stator is higher, electronic components arranged on the rear cover of the motor mainly comprise a power module, a control module, a filter module and the like, wherein the power module is used for connecting and driving the rotating motor, the control module is used for generating a control signal and controlling the power module so as to control the working mode of the rotating motor, and the filter module is used for preventing the power module from interfering with a power grid of, the power module, the control module and the filter module also generate heat in the using process, so that the power module, the control module and the filter module are easy to work normally or even damage due to overhigh temperature in the using process, and the reliable heat dissipation of the rotating motor is particularly important, but the heat dissipation effect of the existing rotating motor is poor, the power module and other electronic components are easy to work and even damage due to overhigh temperature, and the service life of the rotating motor is further shortened. Accordingly, there is a need for a rotating electric machine that can reliably dissipate heat.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art at least one not enough, provide a can be reliable carry out radiating rotating electrical machines.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a rotating electrical machine comprising:

the motor rear cover is internally provided with a cavity;

the rotating shaft is rotatably arranged on the rear cover of the motor;

the rotor is connected to the rotating shaft and is positioned in the cavity;

the stator is arranged in the cavity and surrounds the periphery of the rotor;

an electronic assembly comprising a power module;

the cooling fan is arranged on the rotating shaft, is positioned in the cavity and is positioned on one side of the rotor;

the rotating electric machine further includes:

the heat blocking structure is connected to the rear end of the motor rear cover through a first connecting structure, an axial vent I communicated with the cavity is formed in the rear end of the motor rear cover, a plurality of radial air outlets communicated with the cavity are formed in the periphery of the motor rear cover at intervals, the radial air outlets are located on the periphery of the cooling fan, and the power module is installed at the rear end of the heat blocking structure;

the peripheral side surface of the power module is provided with a plurality of heat dissipation bosses, the heat dissipation bosses extend towards the outer side of the power module, a plurality of support bulges are arranged on the rear side of the heat retaining structure in a one-to-one correspondence mode with the plurality of heat dissipation bosses, and the heat dissipation bosses are connected to the support bulges in a stop-against mode;

the power module with it forms cooling air inlet duct one to have the clearance between the hot structure of fender, the rear end that keeps off the hot structure be equipped with axial vent two of axial vent one intercommunication, just the power module is located the outside of axial vent two, when cooling fan is rotatory, cooling air inlet duct one can be from week side induced draft and form cooling air current one, cooling air current one can flow through axial vent one gets into just can follow in the cavity radial air outlet discharges.

The utility model has the advantages that: in the utility model, the rear end of the motor rear cover is connected with a heat-blocking structure through a first connecting structure, the power module is arranged at the rear end of the heat-blocking structure, a gap is formed between the power module and the heat-blocking structure to form a first cooling air inlet channel, so that when the cooling fan rotates, air outside the first cooling air inlet channel can enter the cavity of the motor rear cover from the first cooling air inlet channel to absorb heat, and when the cooling fan rotates, cooling air flow formed by air suction of the first cooling air inlet channel from the peripheral side sweeps across the surfaces of the power module and the heat-blocking structure, so as to cool the power module and the heat-blocking structure; furthermore, the rear side of the heat blocking structure is provided with a plurality of supporting bulges corresponding to the plurality of heat dissipation bosses one by one, the heat dissipation bosses are abutted against the supporting bulges, the supporting bulges are equivalent to the extension parts of the heat dissipation bosses, so that the length of the heat dissipation bosses is equivalent to the extension of the heat dissipation bosses, heat generated by the power module can be transferred to the heat dissipation bosses and the supporting bulges, the surface area of the power module contacting with air is further increased by the heat dissipation bosses and the supporting bulges, the heat exchange efficiency of the power module and the air is further improved, and the heat dissipation effect of the power module is improved; furthermore, the heat blocking structure can also respectively block partial heat radiation generated by the motor rear cover to the electronic component on the heat blocking structure, so that the heat radiation of the electronic component received by the motor rear cover is further weakened, the excessive temperature of the electronic component installed on the motor rear cover is favorably avoided, and the normal work of the electronic component is ensured. Therefore, the utility model provides a rotating electrical machines can improve the radiating efficiency.

In addition, on the basis of the technical scheme, the utility model discloses can also make following improvement, can also have following additional technical feature.

According to the utility model discloses an embodiment, it is just right to keep off the rear side of hot structure the power module interval is equipped with a plurality of orientations a bellied cooling arch of cooling intake duct, the protruding orientation of cooling power module extends and forms the extension end, just the laminating of the bellied extension end adaptation of cooling ends is stopped on the power module. The protruding extension end adaptation of a plurality of cooling that is equipped with on the fender hot structure of this embodiment is laminated and is stopped on the power module, on the heat of power module can be conducted the cooling arch, and the cooling arch is located cooling intake duct one to improve power module's radiating efficiency.

According to the utility model discloses an embodiment, the heat dissipation boss with it has the heat-conducting glue to fill between the bellied contact surface of support, the bellied extension of cooling end with it has the heat-conducting glue to fill between the contact surface of power module. In this embodiment, the heat-conducting glue is filled between the heat-dissipating boss and the contact surface of the supporting protrusion, so that heat is further improved and conducted between the heat-dissipating boss and the contact surface of the supporting protrusion, and heat generated by the power module is conducted to the supporting protrusion through the heat-dissipating boss to dissipate heat.

According to the utility model discloses an embodiment, electronic component still includes:

control module is connected through connection structure two keep off the rear end of hot structure, just control module is located power module's rear end, control module with it forms cooling air inlet duct two to have the clearance between the power module, cooling air inlet duct two with two intercommunications of axial vent, when cooling fan is rotatory, cooling air inlet duct two can follow week side and induced draft and form cooling air current two.

The control module of this embodiment is installed keep off hot structural deviating from one side of lid behind the motor, control module with it forms cooling air inlet duct two to have the clearance between the power module, when cooling fan is rotatory, cooling air inlet duct two induced drafts from week side and forms cooling air current two, two control module orientation cooling air inlet duct two one side of sweeping of cooling air current and carry out heat exchange with control module to dispel the heat to control module, be favorable to improving control module's radiating efficiency, avoid control module's high temperature and ensure that control module can normally work. Meanwhile, the second cooling air flow sweeps one side of the power module, which faces the second cooling air inlet duct, and exchanges heat with the power module, so that the power module is cooled, and the heat dissipation efficiency of the power module is improved.

According to the utility model discloses an embodiment, electronic component still includes:

the filtering module is connected through connection structure three keep off the rear end of hot structure and orientation be located on the radial direction of pivot the outside of power module, filtering module with it forms cooling air inlet duct three to have the clearance between the hot structure to keep off, cooling air inlet duct three with two intercommunications of axial vent, when cooling fan is rotatory, cooling air inlet duct three can be followed week side and induced drafted and form cooling air current three. The filtering module in this embodiment is installed keep off the rear end of hot structure and towards be located in the radial direction of pivot the outside of power module, and filtering module with it forms cooling air inlet duct three to have the clearance between the hot structure to keep off, when cooling fan is rotatory, cooling air inlet duct three is induced drafted from week side and is formed cooling air current three, cooling air current three sweeps filtering module towards the one side of keeping off hot structure and carries out the heat exchange with filtering module to dispel the heat to filtering module, be favorable to improving the radiating efficiency who controls filtering module, avoid filtering module's high temperature and ensure that filtering module can normally work.

According to the utility model discloses an embodiment, the rotating electrical machines still includes:

the structure of keeping out the wind installs keep off hot structure with between the lid behind the motor, the border of structure of keeping out the wind extends and covers to week side the rear end of lid behind the motor, keep off hot structure with it forms cooling air inlet duct four to have the clearance between the structure of keeping out the wind, the rear end of structure of keeping out the wind is equipped with axial vent three, axial vent three with axial vent intercommunication, when cooling fan is rotatory, cooling air inlet duct four can be followed week side and induced drafted and form cooling air current four.

In the embodiment, the wind shielding structure is arranged between the heat shielding structure and the rear cover of the motor, a gap is formed between the heat shielding structure and the wind shielding structure to form a cooling air inlet duct IV, the wind shielding structure can shield hot air which is discharged from a radial air outlet of the rear cover of the motor and is formed by heat absorption, the airflow formed by discharging hot air from the radial air outlet of the rear cover of the motor and the airflow formed by entering air from the cooling air inlet duct four are separated, the airflow formed by discharging hot air from the radial air outlet of the rear cover of the motor and the airflow formed by entering air from the cooling air inlet duct four are prevented from interfering with each other and mixing to form turbulence, the air inlet loss caused by the turbulence can be reduced, the ventilation is smoother, and the cooling effect is improved, and then be favorable to reducing the temperature of lid behind the motor, reduce the heat radiation that the lid produced the electronic component who covers behind the motor to installing behind the motor, ensure to install behind the motor that the electronic component who covers normally works. Furthermore, the structure of keeping out the wind still can block the motor back lid respectively and keep off the partial heat radiation that the electronic component on the hot structure produced, further weakens the electronic component and receives the heat radiation of motor back lid, is favorable to avoiding installing the temperature of the electronic component who covers behind the motor too high to ensure that electronic component normally works.

According to the utility model discloses an embodiment, the border of structure of keeping out the wind deviates from the lid extends the side portion of keeping out the wind that inclines behind the motor. The border of the structure of keeping out the wind in this embodiment deviates from the lid inclines out to extend and forms side wind-blocking portion behind the motor, side wind-blocking portion can increase the structure of keeping out the wind scope of week side direction, further improvement wind-blocking structure blocks the hot-air that forms from the radial air outlet exhaust of lid behind the motor through the heat absorption, further separate the air current that forms from the air current that four entering air in cooling air inlet duct formed to the air current that radial air outlet discharge hot-air from the lid behind the motor, avoid the air current that the radial air outlet discharge hot-air from the lid behind the motor forms and the air current that four entering air in cooling air inlet duct formed from mutually interfere the mixed flow and form the turbulent flow, can reduce the air inlet loss that the turbulent flow leads to, it is more smooth and easy to ventilate, improve cooling effect.

According to an embodiment of the invention, the material of the wind shielding structure is a material with low thermal conductivity. The material of the structure of keeping out the wind in this embodiment is low heat conductivity material, is favorable to reducing the heat radiation that the lid produced behind the motor and is conducting on the structure of keeping out the wind, improves the structure of keeping out the wind and blocks the effect of the partial heat radiation that the lid produced to the electronic component who keeps off on the hot structure behind the motor, further weakens the heat radiation that electronic component received the lid behind the motor, is favorable to avoiding installing the temperature of the electronic component who covers behind the motor too high to ensure that electronic component normally works.

According to the utility model discloses an embodiment, it is protruding that the front side of structure keeps out the wind is connected with the closed loop, the protruding orientation of closed loop the lid extends behind the motor and forms the extension end, the bellied extension end of closed loop is located the outside of axial vent one, just the bellied extension end adaptation laminating of closed loop ends and supports behind the motor cover, keep out the wind the front side of structure the closed loop protruding with it forms the open cell body of one end shutoff one end to inject between the lid behind the motor. The structure of keeping out the wind in this embodiment is just right one side of lid is connected with the closed loop arch behind the motor, and but the protruding adaptation of closed loop end support of stopping the lid is just right behind the motor on one side of structure of keeping out the wind for keep out the wind the front side of structure closed loop protruding with inject behind the motor and form the open cell body of one end shutoff one end between the lid, can get into the air in the cell body, be favorable to reducing the heat that the lid produced behind the motor to the structure conduction of keeping out the wind, be favorable to reducing the temperature rise of installing the electronic component who covers behind the motor.

According to the utility model discloses an embodiment, it is protruding that the front side of structure keeps out the wind is connected with the closed loop, the protruding orientation of closed loop the lid extends behind the motor and forms the extension end, the bellied extension end of closed loop is located the outside of axial vent one, cover behind the motor and correspond the closed loop arch is equipped with the adaptation and accomodates the recess of accomodating of the bellied extension end of closed loop, the bellied extension end adaptation of closed loop stretches into accomodate in the recess. In this embodiment, the bellied extension end adaptation of closed loop stretches into accomodate in the recess, be favorable to the closed loop protruding fender at the structure of keeping out the wind and motor back between the lid, keep out the front side of wind the structure closed loop protruding with inject to form the open dead slot of one end between the lid behind the motor, but the air can be got into in the dead slot, be favorable to reducing the heat that the lid produced behind the motor to the structure conduction that keeps out the wind, be favorable to reducing the temperature rise of installing the electronic component who covers behind the motor, in addition, be favorable to making to have the clearance between the bellied extension end of closed loop and the accomodating recess, further reduction energy conducts through the closed loop is protruding to keep out.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a rotating electrical machine according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1 after being straightened;

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is a left side view of FIG. 2;

FIG. 5 is a rear view of FIG. 2;

FIG. 6 is a view of FIG. 1 with parts broken away;

fig. 7 is a schematic structural diagram of a power module according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of the installation housing for installing the filtering module according to the embodiment of the present invention, which is installed on the heat shielding structure.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a motor rear cover, 2, a heat retaining structure, 3, a wind retaining structure, 4, a power module, 5, a control module, 6, a filtering module, 10, a first axial ventilation opening, 11, a rotating shaft mounting opening, 12, a radial air outlet, 13, a first connecting lug, 14, a second connecting lug, 15, a third connecting lug, 16, a fourth connecting lug, 20, a second axial ventilation opening, 21, a fifth connecting lug, 22, a first supporting bulge, 23, a second supporting bulge, 24, a supporting column, 25, a cooling bulge, 30, a third axial ventilation opening, 31, a side wind blocking part, 32, a side extension plate, 33, a sixth connecting lug, 40, a first heat dissipation lug, 41, a second heat dissipation lug, 50, a screw mounting avoiding groove, 60, a mounting shell, 131, a first connecting column, 141, a second connecting column, 151, a third connecting column, 161, a fourth connecting column, 401, a first heat dissipation groove, 402, a first screw hole, 411, a second heat dissipation groove, 412 and a screw hole, 601. and a first ventilation opening.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The present embodiment provides a rotating electrical machine, as shown in fig. 1 to 8, including:

the motor rear cover 1 is internally provided with a cavity;

the rotating shaft is rotatably arranged on the motor rear cover 1;

the rotor is connected to the rotating shaft and is positioned in the cavity;

the stator is arranged in the cavity and surrounds the periphery of the rotor;

an electronic assembly including a power module 4;

the cooling fan is arranged on the rotating shaft, is positioned in the cavity and is positioned on one side of the rotor;

the rotating electric machine further includes:

the heat blocking structure 2 is connected to the rear end of the motor rear cover 1 through a connecting structure, an axial vent 10 communicated with the cavity is formed in the rear end of the motor rear cover 1, a plurality of radial air outlets 12 communicated with the cavity are formed in the periphery of the motor rear cover 1 at intervals, the radial air outlets 12 are located on the periphery of the cooling fan, and the power module 4 is installed at the rear end of the heat blocking structure 2;

the peripheral side surface of the power module 4 is provided with a plurality of heat dissipation bosses which extend towards the outer side of the power module 4, the rear side of the heat retaining structure 2 is provided with a plurality of supporting bulges corresponding to the plurality of heat dissipation bosses one by one, and the heat dissipation bosses are connected on the supporting bulges in a stopping way;

a gap is formed between the power module 4 and the heat blocking structure 2 to form a first cooling air inlet channel, the rear end of the heat blocking structure 2 is provided with a second axial vent 20 communicated with the first axial vent 10, the power module 4 is located on the outer side of the second axial vent 20, when the cooling fan rotates, the first cooling air inlet channel can suck air from the peripheral side to form a first cooling air flow, and the first cooling air flow can flow through the first axial vent 10 to enter the cavity and can be discharged from the radial air outlet 12.

In the present embodiment, as shown in fig. 1 to 8, a heat shielding structure 2 is connected to the rear end of a motor rear cover 1 through a first connecting structure, a power module 4 is installed at the rear end of the heat shielding structure 2, and a first cooling air inlet duct is formed by a gap between the power module 4 and the heat shielding structure 2, so that when a cooling fan rotates, air outside the first cooling air inlet duct can enter a cavity of the motor rear cover 1 from the first cooling air inlet duct to absorb heat, and when the cooling fan rotates, a first cooling air flow formed by air suction of the first cooling air inlet duct from the peripheral side sweeps over the surfaces of the power module 4 and the heat shielding structure 2, thereby cooling the power module 4 and the heat shielding structure 2; furthermore, a plurality of supporting protrusions are arranged on the rear side of the heat retaining structure 2 in a one-to-one correspondence manner to the plurality of heat dissipation bosses, the heat dissipation bosses are abutted against the supporting protrusions, the supporting protrusions are equivalent to extension portions of the heat dissipation bosses, and therefore the length of the heat dissipation bosses is equivalent to extension, so that heat generated by the power module 4 can be transferred to the heat dissipation bosses and the supporting protrusions, the surface area of the power module 4 contacting with air is further increased by the heat dissipation bosses and the supporting protrusions, the heat exchange efficiency of the power module 4 and the air is further improved, and the heat dissipation effect of the power module 4 is improved; further, keep off hot structure 2 and still can block the partial heat radiation that lid 1 produced to the electronic component on keeping off hot structure 2 behind the motor respectively, further weaken the electronic component and receive lid 1 behind the motor's heat radiation, be favorable to avoiding installing the electronic component's on lid 1 behind the motor high temperature to ensure that electronic component normally works.

In the embodiment, as shown in fig. 6, a rotating shaft mounting opening 11 is formed in the middle of the rear end of the motor rear cover 1, and in the embodiment, a bearing is mounted in the rotating shaft mounting opening 11, and the rotating shaft is particularly rotatably mounted in the bearing mounted in the rotating shaft mounting opening 11; a plurality of axial ventilation openings 10 are arranged in the embodiment, and the plurality of axial ventilation openings 10 are uniformly distributed and arranged on the peripheral side of the rotating shaft mounting opening 11 at intervals close to the rotating shaft mounting opening 11; further, the rear end of the radial air outlet 12 close to the motor rear cover 1 in this embodiment is opened on the peripheral side wall of the motor rear cover 1, a part of the opening of the radial air outlet 12 is located on the rear side wall of the motor rear cover 1, and a plurality of radial air outlets 12 are provided; in addition, the shapes of the plurality of radial outlets 12 in this embodiment may be various, and the radial outlets 12 may be designed into the same structure or different structures, the shape of the axial vent 10 in this embodiment may be various, the axial vent 10 may be designed into the same structure or different structures, and the shapes of the radial outlets 12 and the axial vent 10 may be designed as required. In this embodiment, the rotating shaft, the rotor, and the cooling fan are not shown.

In this embodiment, as shown in fig. 6 and 8, the heat shielding structure 2 is a plate-shaped structure, the middle of the heat shielding structure 2 is provided with the second axial vent 20, in addition, the second axial vent 20 in this embodiment can pass through the rotating shaft, the rotating shaft passes through the middle of the second axial vent 20, and a gap is formed between the outer side of the rotating shaft and the inner side wall of the second axial vent 20, that is, the through hole for passing through the rotating shaft and the through hole for passing through the air flow on the heat shielding structure 2 are communicated into a whole, further, the second axial vent 20 in this embodiment may also have other various structures, which is not described herein again.

The utility model discloses an embodiment, as shown in FIG. 1 to FIG. 6, keep off the rear side of hot structure 2 and just be equipped with a plurality of bellied cooling arch 25 of cooling air inlet duct towards power module 4 interval, cooling arch 25 extends towards power module 4 and forms the extension end, and the extension end adaptation laminating of cooling arch 25 ends on power module 4. In this embodiment, the extension ends of the plurality of cooling protrusions 25 disposed on the heat shielding structure 2 are adapted to abut against the power module 4, the heat of the power module 4 can be conducted to the cooling protrusions 25, and the cooling protrusions 25 are disposed in the first cooling air inlet duct, so as to improve the heat dissipation efficiency of the power module 4. Further, the cooling protrusions 25 in this embodiment are plate-shaped structures, and an air duct is formed between the two cooling protrusions 25, and in addition, the cooling protrusions 25 may be designed into other structures.

The utility model discloses an embodiment, it has the heat conduction to fill between heat dissipation boss and the bellied contact surface of support to have glues, and it has the heat conduction to fill between the protruding 25 extension end of cooling and the contact surface of power module 4 to have glues. In this embodiment, the heat conducting glue is filled between the heat dissipation boss and the contact surface of the support protrusion, so that the heat is further improved and conducted between the heat dissipation boss and the contact surface of the support protrusion, and the heat generated by the power module 4 is conducted to the support protrusion through the heat dissipation boss to realize heat dissipation.

In this embodiment, the power module 4 is provided with three, the peripheral side of the power module 4 shown in the figure of this embodiment is provided with two heat dissipation bosses, which are respectively a first heat dissipation boss 40 and a second heat dissipation boss 41, and correspondingly, the rear end of the heat retaining structure 2 in this embodiment is provided with two support protrusions corresponding to each power module 4, the support protrusions are respectively a first support protrusion 22 and a second support protrusion 23, further, the support protrusions in this embodiment are also used as a connecting structure for connecting the power module 4 and the heat retaining structure 2, the first heat dissipation boss 40 is provided with a first screw hole 402, the first support protrusion 22 is provided with a screw hole corresponding to the first screw hole 402 on the first heat dissipation boss 40, the first heat dissipation boss 40 is fixedly connected to the first support protrusion 22 through a screw, the second heat dissipation boss 41 is provided with a second screw hole 412, the second support protrusion 23 is provided with a screw hole corresponding, the second heat dissipation boss 41 is fixedly connected to the second support boss 23 through a screw; of course, it is also possible to separately provide the heat shield structure 2 with a connection structure for mounting the power module 4, and to fix the power module 4 to the heat shield structure 2 by mounting the power module 4 on the connection structure. It should be noted that, in the embodiment, the first heat dissipation bosses 40 and the second heat dissipation bosses 41 shown in the figure are different in structure, the first heat dissipation bosses 40 and the second heat dissipation bosses 41 may also be designed to have the same structure, the first support protrusions 22 and the second support protrusions 23 shown in the figure are different in structure, the first heat dissipation bosses 40 and the second heat dissipation bosses 41 may also be designed to have the same structure, in addition, the number of the first heat dissipation bosses and the number of the second support protrusions in the embodiment may also be three, four, and the like, and the structures of the first heat dissipation bosses and the second support protrusions may also have various structures.

In this embodiment, as shown in fig. 7, a first heat dissipation groove 401 for dissipating heat is formed on the first heat dissipation boss 40 in this embodiment, one end of the first heat dissipation groove 401 is open, air can enter the first heat dissipation groove 401, and the heat dissipation effect of the first heat dissipation boss 40 is improved; a second heat dissipation groove 411 for heat dissipation is formed in the second heat dissipation boss 41, and one end of the second heat dissipation groove 411 is open; air can enter the second heat dissipation groove 411, and the heat dissipation effect of the second heat dissipation boss 41 is improved. Further, the structure of the first heat sink 401 and the second heat sink 411 in this embodiment may have various structures.

The utility model discloses an embodiment, as shown in FIG. 1 to FIG. 6, electronic component still includes: the control module 5 is connected to the rear end of the heat retaining structure 2 through a second connecting structure, the control module 5 is located at the rear end of the power module 4, a gap is formed between the control module 5 and the power module 4 to form a second cooling air inlet duct, the second cooling air inlet duct is communicated with the second axial ventilation opening 20, and when the cooling fan rotates, the second cooling air inlet duct can suck air from the peripheral side to form a second cooling air flow.

In this embodiment, as shown in fig. 1 to 6, the control module 5 is installed on one side of the heat shielding structure 2 away from the rear cover 1 of the motor, a gap is formed between the control module 5 and the power module 4 to form a second cooling air inlet duct, when the cooling fan rotates, the second cooling air inlet duct is induced to wind from the peripheral side to form a second cooling air flow, and the second cooling air flow sweeps over one side of the control module 5 facing the second cooling air inlet duct and exchanges heat with the control module 5, so as to dissipate heat from the control module 5, which is beneficial to improving the heat dissipation efficiency of the control module 5, and avoid over-high temperature of the control module 5 to ensure that the control module 5 can normally operate. Meanwhile, the second cooling air flow sweeps across one side of the second cooling air inlet duct of the power module 4 and exchanges heat with the power module 4, so that the power module 4 is cooled, and the heat dissipation efficiency of the power module 4 is improved.

In this embodiment, as shown in fig. 1 to 6, the second connecting structure is a supporting column 24, the control module 5 is installed on the supporting column 24, four supporting columns 24 are provided, the four supporting columns 24 are uniformly distributed and spaced near the edge of the wind shielding structure 3, the height of the supporting column 24 is greater than the thickness of the power module 4, in addition, the number and the position of the supporting columns 24 can be adjusted according to the requirement, and the second connecting structure in this embodiment can also be other structures; further, in order to facilitate the installation of the control module 5, in this embodiment, the screw installation avoiding groove 50 is formed in the edge of the casing of the control module 5, and the screw hole is formed in the position of the screw installation avoiding groove 50, so that the control module 5 is fixed on the support column 24 through the screw.

The utility model discloses an embodiment, as shown in FIG. 1 to FIG. 6, electronic component still includes: the filtering module 6 is connected to the rear end of the heat retaining structure 2 through a third connecting structure and is located on the outer side of the power module 4 in the radial direction towards the rotating shaft, a gap is formed between the filtering module 6 and the heat retaining structure 2 to form a third cooling air inlet duct, the third cooling air inlet duct is communicated with the second axial air vent 20, and when the cooling fan rotates, the third cooling air inlet duct can suck air from the peripheral side to form a third cooling air flow. In this embodiment, the filtering module 6 is installed at the rear end of the heat shielding structure 2 and is located outside the power module 4 in the radial direction towards the rotating shaft, and a gap is formed between the filtering module 6 and the heat shielding structure 2 to form a cooling air inlet duct III, when the cooling fan rotates, the cooling air inlet duct III is induced to wind from the peripheral side to form a cooling air flow III, the cooling air flow III sweeps one side of the filtering module 6 towards the heat shielding structure 2 and exchanges heat with the filtering module 6, so that the heat dissipation of the filtering module 6 is facilitated, the heat dissipation efficiency of the filtering module 6 is improved, and the filtering module 6 is prevented from being too high in temperature to ensure that the filtering module 6 can normally work. Further, in the present embodiment, a side extension plate 32 is connected to one side of the wind shielding structure 3, and the filter module 6 in the present embodiment is installed at the rear end of the side extension plate 32; specifically, the filter module 6 is installed in the installation housing 60, the heat shielding structure 2 is provided with an installation part for installing the filter module 6 corresponding to the side extension plate 32 of the wind shielding structure 3, the installation housing 60 is installed on the installation part, the installation housing 60 forms a cavity for installing the filter module 6, further, the rear end of the circumferential side of the installation housing 60 in the embodiment is provided with a first ventilation opening 601 for ventilating air into the installation housing 60, in addition, each side wall of the installation housing 60 can be provided with ventilation openings, and the shapes and the sizes of the ventilation openings can be various; further, the third connecting structure in this embodiment is a supporting leg on the mounting housing 60, and the third connecting structure may also be other structures.

An embodiment of the present invention, as shown in fig. 1 to fig. 6, the rotating electrical machine further includes: the structure 3 keeps out the wind, install between keeping off hot structure 2 and motor rear cover 1, the border of structure 3 keeps out the wind extends to week side and covers the rear end of lid 1 behind the motor, keeps off and has the clearance to form cooling air inlet duct four between hot structure 2 and the structure 3 keeps out the wind, the rear end of structure 3 keeps out the wind is equipped with axial vent three 30, axial vent three 30 and axial vent one 10 intercommunication, when cooling fan was rotatory, cooling air inlet duct four can be followed week side induced draft and form cooling air current four.

In the present embodiment, as shown in fig. 1 to 6, a wind shielding structure 3 is installed between a heat shielding structure 2 and a motor rear cover 1, a gap is formed between the heat shielding structure 2 and the wind shielding structure 3 to form a cooling air inlet duct four, the wind shielding structure 3 can shield hot air formed by absorbing heat and discharged from a radial air outlet 12 of the motor rear cover 1, and separate an air flow formed by discharging the hot air from the radial air outlet 12 of the motor rear cover 1 from an air flow formed by entering air from the cooling air inlet duct four, so as to prevent the air flow formed by discharging the hot air from the radial air outlet 12 of the motor rear cover 1 from interfering with the air flow formed by entering air from the cooling air inlet duct four to form a turbulent flow, which can reduce intake air loss caused by the turbulent flow, promote ventilation, improve cooling effect, further facilitate reducing the temperature of the motor rear cover 1, and reduce heat radiation generated by the motor rear cover 1 to electronic components installed on the motor rear cover 1, and the normal work of the electronic components arranged on the motor rear cover 1 is ensured. Further, the structure 3 of keeping out the wind still can block the motor back lid 1 respectively to keeping off the partial heat radiation that the electronic component on the hot structure 2 produced, further weakens the electronic component and receives the heat radiation of lid 1 behind the motor, is favorable to avoiding installing the electronic component's on lid 1 behind the motor high temperature to ensure that electronic component normally works.

In the present embodiment, as shown in fig. 6 and 8, a plurality of connection columns are provided at intervals on the circumferential side of the motor rear cover 1, the plurality of connection columns extend toward the heat retaining structure 2, and the wind shielding structure 3 and the heat retaining structure 2 are respectively connected to the extending ends of the connection columns. In this embodiment, be equipped with a plurality of spliced poles through week side interval at fender hot structure 2, and the spliced pole extends towards fender hot structure 2, be convenient for to connect structure 3 and fender hot structure 2 respectively at the extension of spliced pole and serve, and the spliced pole is located the week side of keeping off hot structure 2, the temperature of the week side of keeping off hot structure 2 is lower a little relatively, can reduce behind the motor thermal radiation that lid 1 produced and conduct on keeping off hot structure 3 and keeping off hot structure 2 through the spliced pole from this, be favorable to reducing the temperature rise of installing the electronic component on lid 1 behind the motor.

In this embodiment, as shown in fig. 6, the wind shielding structure 3 is a plate-shaped structure, one side of the wind shielding structure 3 is connected with a side extension plate 32, the periphery of the motor rear cover 1 in this embodiment is provided with a plurality of connection lugs protruding to the outside and connection posts respectively connected to the connection lugs, the plurality of connection lugs include a first connection lug 13, a second connection lug 14, a third connection lug 15 and a fourth connection lug 16, the first connection lug 13 is connected with a first connection post 131, the second connection lug 14 is connected with a second connection post 141, the third connection lug 15 is connected with a third connection post 151, and the fourth connection lug 16 is connected with a fourth connection post 161; in the embodiment, a plurality of connecting lugs six 33 are arranged on the wind shielding structure 3, which are connected to the motor rear cover 1 in a one-to-one correspondence manner, the plurality of connecting lugs six 33 are connected to the edge of the wind shielding structure 3 and extend to the side to form a bulge, and a plurality of connecting lugs six 33 are arranged on the side extension plate 32 on the wind shielding structure 3 corresponding to the connecting lugs in front of the wind shielding structure; furthermore, a plurality of connecting lugs five 21 are arranged on a plurality of connecting lugs six 33 which are connected to the wind shielding structure 3 in a one-to-one correspondence manner on the heat shielding structure 2 in the embodiment, the connecting lugs five 21 are connected to the edge of the heat shielding structure 2, and extend to the opposite side to form a protrusion, in addition, a connecting column one 131, a connecting column two 141, a connecting lug three 15, a connecting lug four 16, the connecting lug five 21 and the connecting lug six 33 in the embodiment are all provided with screw holes, screws are adopted to be screwed in the screw holes respectively, and the wind shielding structure 3 and the heat shielding structure 2 are fixed on the connecting column one 131, the connecting column two 141, the connecting column three 151 and the connecting column four 161, the connecting column four 161 in the embodiment is used as a connecting structure one, and the connecting structure one. It should be noted that, the structure of the plurality of engaging lugs in this embodiment is different, and the plurality of engaging lugs may also be designed to be the same structure, and in addition, the structure of the plurality of connecting columns in this embodiment is different, and the plurality of connecting columns may also be designed to be the same structure, and the number, structure and arrangement manner of the engaging lugs and the connecting columns may all be various, so that it is convenient to install the heat shielding structure 2 and the wind shielding structure 3.

In this embodiment, as shown in fig. 6, an axial ventilation opening three 30 is provided in the middle of the wind shielding structure 3, in addition, the axial ventilation opening three 30 in this embodiment can pass through a rotating shaft, the rotating shaft passes through the middle of the axial ventilation opening three 30, and a gap is provided between the outer side of the rotating shaft and the inner side wall of the axial ventilation opening three 30, that is, a through opening for passing through the rotating shaft and a through opening for passing through an air flow on the wind shielding structure 3 are communicated into a whole, further, the axial ventilation opening three 30 in this embodiment can also have other various structures.

The utility model discloses an embodiment, as shown in fig. 1 to fig. 6, the border that keeps out wind structure 3 deviates from behind the motor lid 1 and leans out the extension and form side windshield portion 31. In this embodiment, the edge of the wind shielding structure 3 deviates from the motor rear cover 1 and extends outward in an inclined manner to form a side wind shielding portion 31, the side wind shielding portion 31 can increase the wind shielding range of the wind shielding structure 3 in the circumferential direction, the further improvement of the wind shielding structure 3 shields hot air which is discharged from the radial air outlet 12 of the motor rear cover 1 and is formed by heat absorption, further, the air flow formed by the hot air discharged from the radial air outlet 12 of the motor rear cover 1 and the air flow formed by air entering from the cooling air inlet duct four are separated, the air flow formed by the hot air discharged from the radial air outlet 12 of the motor rear cover 1 and the air flow formed by air entering from the cooling air inlet duct four are prevented from interfering with each other and mixing to form turbulence, air intake loss caused by turbulence can be reduced, ventilation is smoother, and the cooling effect is improved. Further, the side wind shielding portion 31 in the present embodiment may have various structures, so as to increase the wind shielding range of the wind shielding structure 3 in the circumferential direction.

In one embodiment of the present invention, the material of the wind shielding structure 3 is a low thermal conductive material. In this embodiment, the material of structure 3 keeps out the wind is the low heat conductivity material, is favorable to reducing the heat radiation that lid 1 produced behind the motor and conducts on structure 3 keeps out the wind, improves structure 3 that keeps out the wind and blocks the effect of the partial heat radiation that lid 1 produced to the electronic component that keeps off on the hot structure 2 behind the motor, further weakens electronic component and receives lid 1's behind the motor heat radiation, is favorable to avoiding installing the electronic component's on lid 1 behind the motor high temperature to ensure that electronic component normally works.

The utility model discloses an embodiment, it is protruding that the front side of structure 3 keeps out the wind is connected with the closed loop, and the closed loop is protruding to cover 1 extension formation extension end behind the motor, and the bellied extension end of closed loop is located the outside of axial vent 10, and the bellied extension end adaptation laminating of closed loop ends and supports behind the motor on lid 1, and the open cell body of formation one end shutoff one end is injectd to the front side of structure 3 that keeps out the wind, closed loop is protruding and behind the motor between lid 1. In this embodiment, structure 3 keeps out the wind is just being connected with the closed loop arch to one side of lid 1 behind the motor, but and closed loop arch adaptation butt lid 1 just to keep out the wind structure 3 one side behind the motor on, make structure 3's front side keeps out the wind, inject between closed loop arch and the motor back lid 1 and form the open cell body of one end shutoff one end, accessible air in the cell body, be favorable to reducing the heat that lid 1 produced behind the motor and to the conduction of structure 3 that keeps out the wind, be favorable to reducing the temperature rise of installing the electronic component on lid 1 behind the motor. It should be noted that the closed-loop protrusion in this embodiment is not shown, and the specific arrangement manner of the closed-loop protrusion may be various.

The utility model discloses an embodiment, the front side of structure 3 keeps out the wind is connected with the closed loop arch, and the closed loop is protruding to cover 1 extension formation extension end behind the motor, and the bellied extension end of closed loop is located the outside of an axial vent 10, and it is equipped with the recess of accomodating that the bellied extension end of closed loop can be accomodate in the adaptation to correspond the closed loop arch on the cover 1 behind the motor, and the bellied extension end adaptation of closed loop stretches into in the recess of accomodating. In this embodiment, the bellied extension end adaptation of closed loop stretches into and accomodates in the recess, be favorable to the protruding fender of closed loop between structure 3 and the motor rear cover 1 that keeps out the wind, structure 3's the front side keeps out the wind, it forms the open dead slot of one end to inject between the bellied and the motor rear cover 1 of closed loop, can get into the air in the dead slot, be favorable to reducing the heat that the motor rear cover 1 produced to structure 3 conduction that keeps out the wind, be favorable to reducing the temperature rise of installing the electronic component on the motor rear cover 1, in addition, be favorable to making to have the clearance between the bellied extension end of closed loop and the accomodating recess, further reduction energy is conducted on structure 3 keeps. It should be noted that, the closed-loop protrusion and the accommodating groove in this embodiment are not shown in the drawings, the specific arrangement manner of the closed-loop protrusion and the accommodating groove may be various, and the closed-loop protrusion and the accommodating groove are arranged to avoid the plurality of connecting posts on the motor rear cover 1.

It should be noted that, in the present embodiment, the output end of the rotating electrical machine is used as the front end, and the motor rear cover 1 is used as the rear end as the reference orientation; of course, the placement mode of the rotating motor is different, and the positions of all parts of the rotating motor are changed; furthermore, the size of each cooling air inlet duct in this embodiment can be designed appropriately according to needs, and the structure of each cooling air inlet duct can be various, which is not described herein again; further, the working principle and other components of the power module 4, the control module 5 and the filtering module 6 in this embodiment all belong to the prior art in the field, and are not described herein again.

In addition, except the technical scheme that this embodiment is disclosed, to the utility model provides a power module 4, control module 5, filter module 6, rotor, stator, rotating electrical machines other parts and rotating electrical machines's theory of operation etc. can refer to the conventional technical scheme in this technical field, and these conventional technical scheme also are not the utility model discloses the key point, the utility model discloses do not state in detail here.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., 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.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A rotating electrical machine comprising:

the motor rear cover is internally provided with a cavity;

the rotating shaft is rotatably arranged on the rear cover of the motor;

the rotor is connected to the rotating shaft and is positioned in the cavity;

the stator is arranged in the cavity and surrounds the periphery of the rotor;

an electronic assembly comprising a power module;

the cooling fan is arranged on the rotating shaft, is positioned in the cavity and is positioned on one side of the rotor;

it is characterized by also comprising:

the heat blocking structure is connected to the rear end of the motor rear cover through a first connecting structure, an axial vent I communicated with the cavity is formed in the rear end of the motor rear cover, a plurality of radial air outlets communicated with the cavity are formed in the periphery of the motor rear cover at intervals, the radial air outlets are located on the periphery of the cooling fan, and the power module is installed at the rear end of the heat blocking structure;

the peripheral side surface of the power module is provided with a plurality of heat dissipation bosses, the heat dissipation bosses extend towards the outer side of the power module, a plurality of support bulges are arranged on the rear side of the heat retaining structure in a one-to-one correspondence mode with the plurality of heat dissipation bosses, and the heat dissipation bosses are connected to the support bulges in a stop-against mode;

the power module with it forms cooling air inlet duct one to have the clearance between the hot structure of fender, the rear end that keeps off the hot structure be equipped with axial vent two of axial vent one intercommunication, just the power module is located the outside of axial vent two, when cooling fan is rotatory, cooling air inlet duct one can be from week side induced draft and form cooling air current one, cooling air current one can flow through axial vent one gets into just can follow in the cavity radial air outlet discharges.

2. The rotating machine of claim 1 wherein the rear side of the heat shield is spaced from the power module by a plurality of cooling projections projecting toward the cooling air inlet duct, the cooling projections extending toward the power module to form extended ends, and the extended ends of the cooling projections are adapted to abut against the power module.

3. The rotating electrical machine according to claim 2, wherein a heat conductive adhesive is filled between the heat dissipation boss and the contact surface of the support boss, and a heat conductive adhesive is filled between the extended end of the cooling boss and the contact surface of the power module.

4. The rotating machine according to claim 1, wherein the electronic component further comprises:

control module is connected through connection structure two keep off the rear end of hot structure, just control module is located power module's rear end, control module with it forms cooling air inlet duct two to have the clearance between the power module, cooling air inlet duct two with two intercommunications of axial vent, when cooling fan is rotatory, cooling air inlet duct two can follow week side and induced draft and form cooling air current two.

5. The rotating electric machine according to claim 1 or 4, wherein the electronic component further comprises:

the filtering module is connected through connection structure three keep off the rear end of hot structure and orientation be located on the radial direction of pivot the outside of power module, filtering module with it forms cooling air inlet duct three to have the clearance between the hot structure to keep off, cooling air inlet duct three with two intercommunications of axial vent, when cooling fan is rotatory, cooling air inlet duct three can be followed week side and induced drafted and form cooling air current three.

6. The rotating electric machine according to claim 1, characterized by further comprising:

the structure of keeping out the wind installs keep off hot structure with between the lid behind the motor, the border of structure of keeping out the wind extends and covers to week side the rear end of lid behind the motor, keep off hot structure with it forms cooling air inlet duct four to have the clearance between the structure of keeping out the wind, the rear end of structure of keeping out the wind is equipped with axial vent three, axial vent three with axial vent intercommunication, when cooling fan is rotatory, cooling air inlet duct four can be followed week side and induced drafted and form cooling air current four.

7. The rotating machine of claim 6 wherein the edge of the wind-shielding structure extends obliquely outwardly away from the machine back cover to form a side wind-shield.

8. The rotating electric machine according to claim 6 or 7, wherein the material of the wind shielding structure is a low thermal conductive material.

9. The rotating electrical machine of claim 8, wherein the front side of the wind shielding structure is connected with a closed loop protrusion, the closed loop protrusion extends towards the motor rear cover to form an extending end, the extending end of the closed loop protrusion is located at the outer side of the axial vent I, the extending end of the closed loop protrusion is fitted and abutted on the motor rear cover, and a groove body with one end sealed and the other end open is defined and formed among the front side of the wind shielding structure, the closed loop protrusion and the motor rear cover.

10. The rotating electrical machine according to claim 8, wherein a closed-loop protrusion is connected to a front side of the wind shielding structure, the closed-loop protrusion extends towards the rear motor cover to form an extending end, the extending end of the closed-loop protrusion is located outside the axial ventilation opening one, a receiving groove capable of receiving the extending end of the closed-loop protrusion in an adaptive manner is formed in the rear motor cover corresponding to the closed-loop protrusion, and the extending end of the closed-loop protrusion extends into the receiving groove in an adaptive manner.

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