CN112421884A - Rotating electrical machine convenient to cooling - Google Patents

Abstract

The invention discloses a rotating motor convenient to cool, and belongs to the technical field of motors. 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 and is positioned in the cavity; the stator is arranged in the cavity; an electronic assembly including a power module; the cooling fan is arranged on the rotating shaft and is positioned in the cavity; the heat blocking structure is connected to the rear end of the rear cover of the motor through a connecting structure, the power module is installed 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, a plurality of cooling protrusions are arranged on the rear side of the heat blocking structure, opposite to the power module, at intervals, and extending ends of the cooling protrusions are matched and attached to and abut against the power module; 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 enter the cavity. The rotating electric machine convenient to cool can reliably radiate heat.

Description

Rotating electrical machine convenient to cooling

Technical Field

The invention relates to the technical field of motors, in particular to a rotary motor convenient to cool.

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.

Disclosure of Invention

It is an object of the present invention to overcome at least one of the above-mentioned disadvantages of the prior art and to provide a rotating electric machine which is easy to cool.

The technical scheme for solving the technical problems is as follows: a rotating electric machine facilitating cooling, 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 facilitating cooling further includes:

the rear side of the heat blocking structure is opposite to the power module and is provided with a plurality of cooling bulges protruding towards the cooling air inlet duct at intervals, the cooling bulges extend towards the power module to form extension ends, and the extension ends of the cooling bulges are in fit and abut against the power module;

the rear end of lid behind the motor be equipped with the axial vent of cavity intercommunication is first, the week side interval of lid behind the motor be equipped with a plurality ofly with the radial air outlet of cavity intercommunication, radial air outlet is located cooling fan's week side, keep off the rear end of hot structure be equipped with the axial vent two of an axial vent intercommunication, just power module is located the outside of axial vent two, when cooling fan is rotatory, the cooling air inlet can be induced drafted from week side and form cooling air current one, cooling air current can flow through axial vent gets into in the cavity and can follow radial air outlet discharges.

The invention has the beneficial effects that: according to the invention, the rear end of the rear cover of the motor is connected with the heat retaining structure through the first connecting structure, the power module is arranged at the rear end of the heat retaining structure, a first cooling air inlet channel is formed by a gap between the power module and the heat retaining structure, so that when the cooling fan rotates, air on the outer side of the first cooling air inlet channel can enter the cavity of the rear cover of the motor 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 retaining structure, so that the power module and the heat retaining structure are cooled; furthermore, the extending ends of a plurality of cooling bulges arranged on the heat retaining structure are matched, attached and abutted on the power module, the heat of the power module can be conducted to the cooling bulges, and the cooling bulges are positioned in the first cooling air inlet duct, so that the heat dissipation efficiency 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. Thus, the rotating electric machine convenient to cool in the invention can improve the heat radiation efficiency.

In addition, on the basis of the above technical solution, the present invention may be further improved as follows, and may further have the following additional technical features.

According to an embodiment of the present invention, the rotating electric machine facilitating cooling further 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 two 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 one intercommunication, when cooling fan is rotatory, cooling air inlet duct two can be followed week side and induced drafted and form cooling air current two.

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 second cooling air inlet channel, 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 II are separated, the problem that 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 II interfere with each other and mix with each other to form turbulent flow is avoided, the air inlet loss caused by the turbulent flow 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 one embodiment of the invention, the edge of the wind shielding structure extends obliquely outwards away from the motor rear cover to form a side wind shielding part. 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 radial air outlet exhaust hot-air of lid behind the motor and the air current that gets into the air formation from cooling air inlet duct two, avoid the air current that forms from the radial air outlet exhaust hot-air of lid behind the motor and the air current that gets into the air formation from cooling air inlet duct two to interfere the mixed flow each other 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.

According to one 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 one embodiment of the invention, a closed-loop bulge is connected to the front side of the wind shielding structure, the closed-loop bulge extends towards the motor rear cover to form an extending end, the extending end of the closed-loop bulge is located on the outer side of the axial vent I, the extending end of the closed-loop bulge is matched and abutted against the motor rear cover, and a groove body with one end sealed and the other end open is defined among the front side of the wind shielding structure, the closed-loop bulge and the motor rear cover. 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 one embodiment of the invention, a closed-loop bulge is connected to the front side of the wind shielding structure, the closed-loop bulge extends towards the motor rear cover to form an extending end, a receiving groove capable of being used for receiving the extending end of the closed-loop bulge in an adaptive mode is formed in the motor rear cover corresponding to the closed-loop bulge, and the extending end of the closed-loop bulge is inserted into the receiving groove in an adaptive mode.

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.

According to one embodiment of the invention, the electronic assembly 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 three to have the clearance between the power module, cooling air inlet duct three with axial vent two intercommunications, when cooling fan is rotatory, cooling air inlet duct three can be followed week side and induced drafted formation cooling air current three. 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 three to have the clearance between the power module, when cooling fan is rotatory, cooling air inlet duct three induced drafts from week side and forms cooling air current three, three control module orientation cooling air inlet duct three 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 cooling airflow III sweeps one side of the power module, which faces the cooling air inlet duct III, 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 one embodiment of the invention, the electronic assembly 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 four to have the clearance between the hot structure to keep off, cooling air inlet duct four with two intercommunications of axial vent, when cooling fan is rotatory, cooling air inlet duct four can be induced drafted from week side and form cooling air current four.

The filter 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 filter module with it forms cooling air inlet duct four to have the clearance between the hot structure to keep off, when cooling fan is rotatory, cooling air inlet duct four is induced drafted from week side and is formed cooling air current four, cooling air current four sweeps filter module towards the one side of keeping off hot structure and carries out the heat exchange with filter module to dispel the heat to filter module, be favorable to improving the radiating efficiency who controls filter module, avoid filter module's high temperature and ensure that filter module can normally work.

According to one embodiment of the invention, a plurality of heat dissipation bosses are arranged on the peripheral side surface of the power module, the heat dissipation bosses extend towards the outer side of the power module, a plurality of support protrusions are arranged on the rear side of the heat retaining structure in a one-to-one correspondence with the plurality of heat dissipation bosses, and the heat dissipation bosses are connected on the support protrusions in a stop manner. The rear side one-to-one of keeping off hot structure in this embodiment is a plurality of the heat dissipation boss is equipped with a plurality of supporting protrusion, and the boss end of just dispelling the heat is in on the supporting protrusion, the supporting protrusion is equivalent to the extension of heat dissipation boss to equivalent to the length that has extended the heat dissipation boss, make the heat that power module produced can transmit the heat dissipation boss and support protruding, and the boss that dispels the heat and support protruding further increase the surface area that power module and air contacted, further improvement power module carries out heat exchange efficiency and improvement power module's radiating effect with the air.

According to one embodiment of the invention, a plurality of connecting columns are arranged on the peripheral side of the motor rear cover at intervals, the connecting columns extend towards the heat retaining structure, and the wind shielding structure and the heat retaining structure are respectively connected to the extending ends of the connecting columns. This embodiment is equipped with a plurality of spliced poles through week side interval at keeping off hot structure, and the spliced pole orientation keep off hot structure extension, be convenient for with keep off the wind structure with keep off hot structure and connect respectively the extension of spliced pole is served, and the spliced pole is located the week side of keeping off hot structure, and the temperature of the week side of keeping off hot structure is lower a little relatively, can reduce the heat radiation that the lid produced behind the motor and conduct the structure of keeping off the wind and keep off hot structure through the spliced pole on from this, is favorable to reducing the temperature rise of installing the electronic component who covers behind the motor.

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 based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a rotating electric machine facilitating cooling 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 a mounting case for mounting a filter module according to an embodiment of the present invention mounted on a 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 that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. 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 that facilitates cooling, 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 facilitating cooling further includes:

the heat blocking structure 2 is connected to the rear end of the motor rear cover 1 through a connecting structure, the power module 4 is installed at the rear end of the heat blocking structure 2, a gap is formed between the power module 4 and the heat blocking structure 2 to form a first cooling air inlet channel, a plurality of cooling protrusions 25 protruding towards the first cooling air inlet channel are arranged on the rear side of the heat blocking structure 2 and opposite to the power module 4 at intervals, the cooling protrusions 25 extend towards the power module 4 to form extension ends, and the extension ends of the cooling protrusions 25 are matched and attached to and abut against the power module 4;

the rear end of the motor rear cover 1 is provided with an axial vent I10 communicated with the cavity, a plurality of radial air outlets 12 communicated with the cavity are arranged on the periphery of the motor rear cover 1 at intervals, the radial air outlets 12 are located on the periphery of the cooling fan, an axial vent II 20 communicated with the axial vent I10 is arranged at the rear end of the heat retaining structure 2, the power module 4 is located on the outer side of the axial vent II 20, when the cooling fan rotates, a cooling air inlet channel I can suck air from the periphery to form a cooling air flow I, and the cooling air flow I can flow through the axial vent I10 to enter the cavity and can be discharged from the radial air outlets 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, the extending ends of a plurality of cooling protrusions 25 arranged on the heat retaining structure 2 are fitted and abutted on 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 positioned in the first cooling air inlet duct, so that the heat dissipation efficiency 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 to have the same structure or different structures, the shape of the axial vent 10 in this embodiment may be various, the radial outlets 12 may be designed to have 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. 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.

In one embodiment of the present invention, as shown in fig. 1 to 6, the rotating electric machine facilitating cooling further includes: the wind shielding structure 3 is installed between the heat shielding structure 2 and the motor rear cover 1, the edge of the wind shielding structure 3 extends towards the circumferential side and covers the rear end of the 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 II, the rear end of the wind shielding structure 3 is provided with an axial vent opening three 30, the axial vent opening three 30 is communicated with the axial vent opening one 10, and when the cooling fan rotates, the cooling air inlet duct two can be induced draft from the circumferential side to form a cooling air flow II.

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 two, 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 two, 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 two 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 and 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 extending plate 32 on the wind shielding structure 3 and correspond 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.

In one embodiment of the present invention, as shown in fig. 1 to 6, the edge of the wind shielding structure 3 extends obliquely outward away from the motor rear cover 1 to form a side wind shielding portion 31. The edge of the wind shielding structure 3 in this embodiment 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 wind shielding structure 3 is further improved to shield hot air formed by heat absorption discharged from the radial air outlet 12 of the motor rear cover 1, further, air flow formed by hot air discharged from the radial air outlet 12 of the motor rear cover 1 and air flow formed by air entering from the cooling air inlet duct ii are separated, the air flow formed by hot air discharged from the radial air outlet 12 of the motor rear cover 1 and air flow formed by air entering from the cooling air inlet duct ii are prevented from interfering with each other to form turbulence, air inlet 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 invention, the material of the wind-shielding structure 3 is a material with low thermal conductivity. The material of structure 3 that keeps out the wind in this embodiment is low heat conductivity material, the heat radiation that is favorable to reducing behind the motor lid 1 production conducts on structure 3 keeps out the wind, the improvement structure 3 that keeps out the wind blocks behind the motor lid 1 to keeping off the effect of the partial heat radiation that the electronic component on the hot structure 2 produced, further weaken the heat radiation that electronic component received lid 1 behind the motor, be favorable to avoiding installing the electronic component's on lid 1 behind the motor high temperature, thereby ensure that electronic component normally works.

According to one embodiment of the invention, the front side of the wind shielding structure 3 is connected with a closed-loop bulge, the closed-loop bulge extends towards the motor rear cover 1 to form an extending end, the extending end of the closed-loop bulge is positioned on the outer side of the axial ventilation opening I10, the extending end of the closed-loop bulge is matched and abutted against the motor rear cover 1, and a groove body with one end sealed and the other end open is defined among the front side of the wind shielding structure 3, the closed-loop bulge and the motor rear cover 1. Structure 3 of keeping out the wind in this embodiment is connected with the closed loop arch just to one side of lid 1 behind the motor, but the protruding adaptation of closed loop end to the lid 1 just to the structure 3 of keeping out the wind behind the motor on one side, make the front side of structure 3 of keeping out the wind, inject between the protruding and motor back lid 1 of closed loop 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 structure 3 conduction of keeping out the wind, be favorable to reducing the temperature rising 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.

In an embodiment of the present invention, as shown in fig. 1 to 6, a closed-loop protrusion is connected to a front side of the wind shielding structure 3, the closed-loop protrusion extends toward the motor rear cover 1 to form an extending end, the extending end of the closed-loop protrusion is located outside the axial vent opening i 10, a receiving groove capable of receiving the extending end of the closed-loop protrusion is disposed on the motor rear cover 1 corresponding to the closed-loop protrusion, and the extending end of the closed-loop protrusion is adapted to extend into the receiving groove.

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 behind the motor rear cover 1.

In one embodiment of the present invention, as shown in fig. 1 to 6, the electronic component further includes: the control module 5 is connected to the rear end of the heat retaining structure 2 through the 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 third cooling air inlet duct, the third cooling air inlet duct is communicated with the second axial ventilation opening 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. The control module 5 of this embodiment is installed and is kept away from one side of lid 1 behind the motor on keeping off hot structure 2, it forms cooling air inlet duct three to have the clearance between control module 5 and the power module 4, 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 control module 5 towards one side of cooling air inlet duct three and carries out heat exchange with control module 5, thereby dispel the heat to control module 5, be favorable to improving control module 5's radiating efficiency, avoid control module 5's high temperature and ensure that control module 5 can normally work. Meanwhile, the cooling air flow III sweeps across one side of the power module 4 facing the cooling air inlet duct III 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.

In one embodiment of the present invention, as shown in fig. 1 to 6, the electronic component further includes: the filtering module 6 is connected to the rear end of the heat retaining structure 2 through the 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 fourth cooling air inlet channel, the fourth cooling air inlet channel is communicated with the second axial air vent 20, and when the cooling fan rotates, the fourth cooling air inlet channel can be induced draft from the peripheral side to form a fourth cooling air flow.

In this embodiment, as shown in fig. 1 to 6, the filtering module 6 is installed at the rear end of the heat shielding structure 2 and located outside the power module 4 in the radial direction toward 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 four, when the cooling fan rotates, the cooling air inlet duct four sucks air from the peripheral side to form a cooling air flow four, and the cooling air flow four sweeps across one side of the filtering module 6 toward the heat shielding structure 2 and exchanges heat with the filtering module 6, so as to dissipate heat from the filtering module 6, thereby facilitating to improve the heat dissipation efficiency of the filtering module 6, and avoiding the over-high temperature of the filtering module 6 to ensure that the filtering module 6 can normally operate. 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.

In an embodiment of the present invention, as shown in fig. 1 to 6, a plurality of heat dissipation bosses are disposed on a peripheral side of the power module 4, the heat dissipation bosses extend to an outer side of the power module 4, a plurality of support protrusions are disposed on a rear side of the heat shielding structure 2 corresponding to the plurality of heat dissipation bosses one by one, and the heat dissipation bosses are connected to the support protrusions in a stop-against manner. A plurality of heat dissipation bosses that keep off the rear side one-to-one of hot structure 2 in this embodiment are equipped with a plurality of support archs, and the boss end of dispelling the heat is supported on support archs, support archs are equivalent to the extension of heat dissipation boss, thereby equivalent to the length that has extended heat dissipation boss, make the heat that power module 4 produced can transmit to heat dissipation boss and support archs, and heat dissipation boss and support protruding further increase the surface area that power module 4 and air contacted, further improvement power module 4 carries out heat exchange efficiency and improvement power module 4's radiating effect with the air.

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.

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 to the technical solutions disclosed in the present embodiment, for the power module 4, the control module 5, the filter module 6, the rotor, the stator, other components of the rotating electrical machine, and the operating principle of the rotating electrical machine in the present invention, reference may be made to conventional technical solutions in the present technical field, which are not the gist of the present invention, and the present invention is not described in detail herein.

In the present invention, the term "plurality" means two or more unless explicitly 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of 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 electric machine facilitating cooling, 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 rear side of the heat blocking structure is opposite to the power module and is provided with a plurality of cooling bulges protruding towards the cooling air inlet duct at intervals, the cooling bulges extend towards the power module to form extension ends, and the extension ends of the cooling bulges are in fit and abut against the power module;

the rear end of lid behind the motor be equipped with the axial vent of cavity intercommunication is first, the week side interval of lid behind the motor be equipped with a plurality ofly with the radial air outlet of cavity intercommunication, radial air outlet is located cooling fan's week side, keep off the rear end of hot structure be equipped with the axial vent two of an axial vent intercommunication, just power module is located the outside of axial vent two, when cooling fan is rotatory, the cooling air inlet can be induced drafted from week side and form cooling air current one, cooling air current can flow through axial vent gets into in the cavity and can follow radial air outlet discharges.

2. The rotating electric machine facilitating cooling according to claim 1, 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 two 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 one intercommunication, when cooling fan is rotatory, cooling air inlet duct two can be followed week side and induced drafted and form cooling air current two.

3. The rotating machine of claim 2 wherein the edge of the wind-shielding structure extends obliquely outwardly away from the machine back cover to form a side wind-shield.

4. A rotating electric machine according to claim 2 or 3, characterized in that the material of the wind shielding structure is a low thermal conductive material.

5. The rotating electrical machine convenient to cool according to claim 2 or 3, wherein the front side of the wind shielding structure is connected with a closed loop protrusion, the extending end of the closed loop protrusion is located outside the first axial ventilation opening, the closed loop protrusion extends towards the motor rear cover to form an extending end, 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 opened is defined between the front side of the wind shielding structure, the closed loop protrusion and the motor rear cover.

6. The rotating electrical machine convenient for cooling according to claim 2 or 3, wherein a closed-loop protrusion is connected to the front side of the wind shielding structure, the closed-loop protrusion extends towards the rear cover of the electrical machine to form an extending end, the extending end of the closed-loop protrusion is located outside the first axial ventilation opening, a receiving groove capable of being matched with the closed-loop protrusion to receive the extending end of the closed-loop protrusion is formed in the rear cover of the electrical machine, and the extending end of the closed-loop protrusion is matched with and extends into the receiving groove.

7. The rotating electrical machine facilitating cooling of claim 1, wherein the electronics assembly 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 three to have the clearance between the power module, cooling air inlet duct three with axial vent two intercommunications, when cooling fan is rotatory, cooling air inlet duct three can be followed week side and induced drafted formation cooling air current three.

8. The rotary electric machine facilitating cooling according to claim 1 or 7, wherein the electronic component further 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 four to have the clearance between the hot structure to keep off, cooling air inlet duct four with two intercommunications of axial vent, when cooling fan is rotatory, cooling air inlet duct four can be induced drafted from week side and form cooling air current four.

9. The rotating electrical machine convenient for cooling according to claim 2, wherein a plurality of heat dissipating bosses are provided on a peripheral side of the power module, the heat dissipating bosses extend to an outer side of the power module, a plurality of supporting protrusions are provided on a plurality of heat dissipating bosses corresponding to one another on a rear side of the heat retaining structure, and the heat dissipating bosses are connected to the supporting protrusions in a stop manner.

10. The rotating electrical machine convenient to cool according to any one of claims 1 to 3, wherein a plurality of connecting columns are provided at intervals on the circumferential side of the rear cover of the electrical machine, the plurality of connecting columns extend toward the heat retaining structure, and the wind shielding structure and the heat retaining structure are respectively connected to the extending ends of the connecting columns.

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