CN220273463U

CN220273463U - Novel motor structure

Info

Publication number: CN220273463U
Application number: CN202321442597.6U
Authority: CN
Inventors: 莫宏伟; 边文清; 俞超; 梁志成
Original assignee: Zhongshan Broad Ocean Motor Co Ltd
Current assignee: Zhongshan Broad Ocean Motor Co Ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2023-12-29
Anticipated expiration: 2033-06-07

Abstract

The utility model discloses a novel motor structure, which comprises a single machine, a motor controller and a bracket, wherein the single machine comprises a motor shell, a stator assembly, a rotor assembly, a rotating shaft, a first fan and a wind scooper, the first fan is arranged at the extending end of the rear shaft of the rotating shaft, the wind scooper is arranged outside the first fan, and a wind inlet is arranged on the wind scooper; the motor controller comprises a control circuit board, a radiator, a high-speed cooling fan and a shell, wherein a high-power chip on the control circuit board is attached to a top plate of the radiator, a plurality of radiating fins are arranged below the top plate of the radiator at intervals, the radiating fins are arranged along an axial branch office, the high-speed cooling fan is arranged on one side of the radiator, a high-power capacitor extending out of the control circuit board is located on the other side of the radiator, and a plurality of air outlet holes are formed in the front side face of the shell. When the high-speed cooling fan is operated at a low rotating speed, enough wind pressure is provided by the high-speed cooling fan, and the temperature rise of the whole machine is not too high under the severe use environment, so that the service life of the whole machine is prolonged.

Description

Novel motor structure

Technical field:

the utility model relates to a novel motor structure.

The background technology is as follows:

modern motors all use higher electromagnetic loads to increase material utilization, and the single-machine capacity of the motor is increasing, so the cooling system of the motor must be improved to increase heat dissipation capability. Most motors, except for individual small motors or special motors, use fans to force air flow to cool the motor.

Existing PMSM or BLDC motors typically comprise two parts, a single machine including a stator assembly, a rotor assembly and a motor housing, and a controller mainly including a case and a control wiring board. Both the single machine and the controller have large self-heating values, and under the condition of high use environment temperature, natural cooling is often unable to meet design requirements, so that an additional heat dissipation device is needed, and simple air cooling is usually selected. The cooling fan generates enough pressure to drive the needed gas to pass through the motor, so that the temperature rise of the whole machine is in a reasonable range.

However, because of different demands of customers, whether to provide a complete machine (single machine+controller) or only provide a single machine, the controller is required to be convenient to disassemble when the design is carried out, and two supply modes are provided for customers to select.

The prior art and the technical problems existing in the prior art: the existing motor design often separates a single machine from a controller due to the problems of space, heat dissipation and the like, namely the whole machine is made into a split type, but the occupied space is larger, and the electromagnetic anti-interference capability is poor; or the single machine is integrated with the controller, and the tail part of the single machine shaft is provided with a cooling fan, but the design requires the complete machine to have good running environment, namely limited by the use environment.

It is generally known that the larger the plane speed (the plane speed is determined by the rotation speed and wind pressure of the rotor), the larger the wind quantity, the larger the heat absorption amount of the air, and the more heat can be taken away when the air flows and transfers, so that the heat dissipation effect is more obvious.

However, in the initial stage of electromagnetic and structural design of the motor, the motor rotation speed and the overall external dimension are determined, namely the external dimension of the cooling fan and the rotation speed of the rotor are basically determined. If the motor is in low-rotation-speed operation for a long time, insufficient wind pressure causes cooling wind to flow through the surfaces of the controller and the single machine, and the use environment is bad, the temperature rise of the whole machine is too high, so that the service life of the whole machine is greatly shortened.

The above situation is only for the whole machine, but for the solution of providing only a single machine, the cooling fan at the tail of the motor is sufficient for cooling the motor. When the motor is required to be designed, two schemes of a whole machine and a single machine are required to be considered.

The utility model comprises the following steps:

the utility model aims to provide a novel motor structure, which can solve the technical problems that in the prior art, a complete machine structure with a single machine and a controller assembled together is designed, the motor rotating speed and the overall external dimension are determined in the initial stage of design, namely, the external dimension of a cooling fan and the rotating speed of a rotor are basically determined, and when the cooling fan runs at a low rotating speed, cooling air flows through the surfaces of the controller and the single machine due to insufficient wind pressure, the use environment is severe, the temperature rise of the complete machine is too high, and the service life of the complete machine is greatly shortened.

The utility model further aims to provide a novel motor structure, the controller can be quickly and conveniently detached from the single machine without influencing heat dissipation, and the single machine can be sold without modification, so that the motor structure is flexible and convenient.

The aim of the utility model is achieved by the following technical scheme.

The utility model provides a novel motor structure, includes unit, motor controller and support, the top installing support of unit, and motor controller installs on the support, wherein:

the single machine comprises a motor shell, a stator assembly, a rotor assembly, a rotating shaft, a first fan and a wind scooper, wherein the stator assembly and the rotor assembly are arranged in the motor shell;

the method is characterized in that: the motor controller comprises a control circuit board, a radiator, a high-speed cooling fan and a shell, wherein the control circuit board, the radiator and the high-speed cooling fan are all installed in a cavity of the shell, a high-power chip on the control circuit board is attached to a top plate of the radiator, a plurality of radiating fins are arranged below the top plate of the radiator at intervals, the radiating fins are axially distributed, the high-speed cooling fan is installed on one side of the radiator, a high-power capacitor extending out of the control circuit board is located on the other side of the radiator, and a plurality of air outlet holes are formed in the front side of the shell.

The outer surface of the motor shell is provided with a plurality of first radiating ribs distributed along the axial direction.

The shell comprises a top shell made of metal materials and a frame arranged below the top shell.

The air outlet holes are formed in the frame.

The frame is a plastic piece, and the section of the frame is of a rectangular structure.

The outer surface of the top shell is provided with a plurality of second heat dissipation ribs.

The cross section of the bracket is ┎ L-shaped, and reinforcing ribs are arranged at the corners.

The top of the wind scooper is provided with a notch which is communicated with the cavity in the shell, cold air enters from the wind scooper, part of cold air enters into the cavity in the shell and is discharged after passing through the high-power capacitor, the radiator, the high-speed cooling fan and the plurality of air outlet holes, and the other part of cold air takes away the heat of the single machine from the outer surface of the motor shell.

Compared with the prior art, the utility model has the following effects:

1) The utility model relates to a novel motor structure, which comprises a single machine, a motor controller and a bracket, wherein the top of the single machine is provided with the bracket, the motor controller is arranged on the bracket, the single machine comprises a motor shell, a stator assembly, a rotor assembly, a rotating shaft, a first fan and a wind scooper, the first fan is arranged at the extending end of a rear shaft, the wind scooper is arranged outside the first fan, and a wind inlet is arranged on one end face of the wind scooper positioned behind the first fan; the motor controller comprises a control circuit board, a radiator, a high-speed cooling fan and a shell, wherein the control circuit board, the radiator and the high-speed cooling fan are all installed in a cavity of the shell, a high-power chip on the control circuit board is attached to a top plate of the radiator, a plurality of radiating fins are arranged below the top plate of the radiator at intervals, the high-speed cooling fan is installed on one side of the radiator, a high-power capacitor extending out of the control circuit board is located on the other side of the radiator, and a plurality of air outlet holes are formed in the front side face of the shell. Under the condition that the outer diameter of the first fan and the gear rotating speed of the rotor are basically determined, when the first fan runs at a low rotating speed, the high-speed cooling fan is utilized to provide enough wind pressure, so that cooling wind simultaneously flows through the inside of the controller and the surface of a single machine, even if the use environment is severe, the temperature rise of the whole machine is not too high, and the service life of the whole machine is prolonged.

2) Other advantages of the present utility model are described in detail in the examples section.

Description of the drawings:

FIG. 1 is a perspective view of one angle provided by the present utility model;

FIG. 2 is a perspective view of another angle provided by the present utility model;

FIG. 3 is an exploded view of an angle provided by the present utility model;

FIG. 4 is an exploded view of another angle provided by the present utility model;

FIG. 5 is a left side view provided by the present utility model;

FIG. 6 is a cross-sectional view A-A of FIG. 5;

FIG. 7 is an angular perspective view of a motor controller provided by the present utility model;

FIG. 8 is another perspective view of a motor controller according to the present utility model;

FIG. 9 is a schematic diagram illustrating the installation of a heat sink and a high-speed cooling fan according to the present utility model;

fig. 10 is an installation schematic diagram of a control circuit board, a radiator and a high-speed cooling fan provided by the utility model.

FIG. 11 is a schematic diagram of the flow direction of the air flow in operation provided by the present utility model.

The specific embodiment is as follows:

the utility model is described in further detail below by means of specific embodiments in connection with the accompanying drawings.

Embodiment one:

as shown in fig. 1 to 11, the present embodiment provides a novel motor structure, which includes a stand-alone unit 1, a motor controller 2 and a bracket 3, wherein the stand-alone unit 1 is provided with a top mounting bracket 3, and the motor controller 2 is mounted on the bracket 3, wherein:

the single machine 1 comprises a motor shell 11, a stator assembly 12, a rotor assembly 13, a rotating shaft 14, a first fan 15 and a wind scooper 16, wherein the stator assembly 12 and the rotor assembly 13 are arranged in the motor shell 11, the rotor assembly 13 is arranged on the rotating shaft 14, two ends of the rotating shaft 14 extend out of two ends of the motor shell 11 to form a front shaft extending end 141 and a rear shaft extending end 142 respectively, the first fan 15 is arranged on the rear shaft extending end 142, the wind scooper 16 is arranged outside the first fan 15, and an air inlet 162 is arranged on one end face 161 of the wind scooper 16 positioned behind the first fan 15;

the method is characterized in that: the motor controller 2 comprises a control circuit board 21, a radiator 22, a high-speed cooling fan 23 and a shell 24, wherein the control circuit board 21, the radiator 22 and the high-speed cooling fan 23 are all arranged in a cavity 240 of the shell 24, a high-power chip 211 on the control circuit board 21 is attached to a top plate 221 of the radiator 22, a plurality of radiating fins 222 are arranged below the top plate 221 of the radiator 22 at intervals, the radiating fins 222 are distributed along the axial direction, the high-speed cooling fan 23 is arranged on one side of the radiator 22, a high-power capacitor 212 extending out of the control circuit board 21 is arranged on the other side of the radiator 22, and a plurality of air outlet holes 241 are formed in the front side 242 of the shell 24. Under the condition that the outer diameter of the first fan 15 and the gear rotating speed of the rotor are basically determined, when the high-speed cooling fan 23 is used for running at a low rotating speed, enough wind pressure is provided, so that cooling wind flows through the inside of the controller 2 and the surface of the single machine 1 at the same time, the temperature rise of the whole machine is not too high even under the severe environment of use, and the service life of the whole machine is prolonged. In addition, the motor controller 2 and the bracket 3 can be conveniently detached from the single machine 1 without affecting the heat dissipation of the motor 1, and the single machine can be sold without modification, so that the motor controller is flexible and convenient.

The outer surface of the motor housing 11 is provided with a plurality of first heat dissipation ribs 110 distributed along the axial direction, so that heat dissipation can be accelerated.

The housing 24 includes a top case 24a made of a metal material and a rim 24b provided under the top case 24 a. The air outlet holes 241 are arranged on the frame 24b, so that the arrangement is reasonable and the manufacture is convenient.

The frame 24b is a plastic member, and has a rectangular cross section.

The outer surface of the top case 24a is provided with a plurality of second heat dissipating ribs 243. The heat dissipation can be accelerated.

The cross section of the bracket 3 is ┎ L-shaped, and the reinforcing ribs 31 are arranged at the corners, so that the structural strength can be increased.

The notch 163 is arranged above the top of the wind scooper 16, the notch 163 is communicated with the cavity 240 in the shell 24, cold air enters from the wind scooper 16, a part of cold air enters into the cavity 240 in the shell 24 and is discharged after passing through the high-power capacitor 212, the radiator 22, the high-speed cooling fan 23 and the plurality of air outlet holes 241, and the other part of cold air takes away the heat of the single machine 1 from the outer surface of the motor shell 11. The double-fan layout of the first fan 15 and the high-speed cooling fan 23 is adopted, the first fan 15 is responsible for air suction, the high-speed cooling fan 23 is responsible for air blowing, the air flow and heat dissipation can be quickened, when the high-speed cooling fan 23 runs at a low rotating speed, enough wind pressure is provided, cooling wind flows through the inside of the controller 2 and the surface of the single machine 1 at the same time, even under the severe environment of use, the temperature rise of the whole machine is not too high, the service life of the whole machine is prolonged, and an arrow in fig. 11 indicates the flow direction of air flow.

The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present utility model are included in the scope of the present utility model.

Claims

1. The utility model provides a novel motor structure, includes unit (1), motor controller (2) and support (3), top installing support (3) of unit (1), and motor controller (2) are installed on support (3), wherein:

the single machine (1) comprises a motor shell (11), a stator assembly (12), a rotor assembly (13), a rotating shaft (14), a first fan (15) and a wind scooper (16), wherein the stator assembly (12) and the rotor assembly (13) are arranged in the motor shell (11), the rotor assembly (13) is arranged on the rotating shaft (14), two ends of the rotating shaft (14) extend out of two ends of the motor shell (11) to form a front shaft extending end (141) and a rear shaft extending end (142) respectively, the first fan (15) is arranged on the rear shaft extending end (142), the wind scooper (16) is arranged outside the first fan (15), and a wind inlet hole (162) is formed in one end face (161) of the wind scooper (16) positioned behind the first fan (15);

the method is characterized in that: the motor controller (2) comprises a control circuit board (21), a radiator (22), a high-speed cooling fan (23) and a shell (24), wherein the control circuit board (21), the radiator (22) and the high-speed cooling fan (23) are all installed in a cavity (240) of the shell (24), a high-power chip (211) on the control circuit board (21) is attached to a top plate (221) of the radiator (22), a plurality of radiating fins (222) are arranged below the top plate (221) of the radiator (22) at intervals, the radiating fins (222) are distributed along the axial direction, the high-speed cooling fan (23) is installed on one side of the radiator (22), a high-power capacitor (212) extending out of the control circuit board (21) is located on the other side of the radiator (22), and a plurality of air outlet holes (241) are formed in the front side (242) of the shell (24).

2. A novel motor structure as claimed in claim 1, wherein: the outer surface of the motor shell (11) is provided with a plurality of first radiating ribs (110) which are distributed along the axial direction.

3. A novel motor structure according to claim 1 or 2, characterized in that: the housing (24) includes a top case (24 a) made of a metal material and a rim (24 b) to which the top case (24 a) is attached.

4. A novel motor structure according to claim 3, characterized in that: a plurality of air outlet holes (241) are arranged on the frame (24 b).

5. The novel motor structure of claim 4, wherein: the frame (24 b) is a plastic piece, and the section of the frame is a rectangular structure.

6. The novel motor structure of claim 5, wherein: the outer surface of the top shell (24 a) is provided with a plurality of second heat dissipation ribs (243).

7. A novel motor structure according to claim 3, characterized in that: the cross section of the bracket (3) is ┎ L-shaped, and the reinforcing ribs (31) are arranged at the corner positions.

8. A novel motor structure according to claim 3, characterized in that: a gap (163) is formed above the top of the air guide cover (16), the gap (163) is communicated with a cavity (240) in the shell (24), cold air enters from the air guide cover (16), part of cold air enters into the cavity (240) in the shell (24), is discharged after passing through the high-power capacitor (212), the radiator (22), the high-speed cooling fan (23) and the air outlet holes (241), and the other part of cold air is discharged after passing through the outer surface of the motor shell (11) to take away the heat of the single machine (1).