CN220732546U - Water-cooled permanent magnet synchronous brushless direct current motor - Google Patents

Abstract

The utility model provides a water-cooled permanent magnet synchronous brushless direct current motor, which comprises a casing, a stator and a rotor, wherein a water-cooling channel is formed between the casing and the stator and is divided into a first cavity and a second cavity by a first partition plate, cooling liquid is arranged in the second cavity, a miniature motor is arranged in the first cavity, a first fan is arranged on a motor shaft of the miniature motor on a part of the first cavity, the motor shaft of the miniature motor extends into the second cavity, and a stirring device for accelerating the flow of the cooling liquid is arranged on a part of the second cavity. According to the utility model, the cooling liquid in the second cavity is matched with the water cooling system formed by the stirring device, so that the heat dissipation effect is improved, the temperature of the motor can be effectively reduced, the efficiency and the service life of the motor are improved, and meanwhile, the heat generated by the motor is dissipated into the environment through the arrangement of the first fan, the second fan, the electronic radiating fins, the first radiating fins and the second radiating fins, so that the heat dissipation effect is further improved.

Description

Water-cooled permanent magnet synchronous brushless direct current motor

Technical Field

The utility model mainly relates to the technical field of motor heat dissipation, in particular to a water-cooled permanent magnet synchronous brushless direct current motor.

Background

With the rapid development of industrial machinery, the high-power application is continuously increased, and in the running process of a motor, mechanical friction in the rotating process of a rotor can generate heat, and a coil of the motor can generate heat due to a certain resistor, so that higher requirements on the performance and the heat dissipation capacity of the motor are provided. The traditional brushless direct current motor has limited heat dissipation effect, so that overheating phenomenon is easy to occur in high-power application, and the efficiency and the service life of the motor are reduced.

For example, in a water-cooled motor provided by CN205407539U, a heat dissipation pipe is embedded in a stator, so that heat received by the stator can be directly dissipated by the heat dissipation pipe in the running process of the water-cooled motor, but the heat is naturally absorbed by the heat dissipation pipe and the cooling liquid therein, so that the heat dissipation speed is low, and the heat dissipation efficiency is low.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model provides a water-cooled permanent magnet synchronous brushless direct current motor which is used for solving the technical problems in the background technology.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: the utility model provides a water-cooled permanent magnet synchronous brushless direct current motor, includes casing, stator and rotor, the rotor sets up in the stator, and it is connected with the motor shaft, form the water-cooling passageway between casing and the stator, the water-cooling passageway is cut apart into first cavity and second cavity by first baffle, be provided with the coolant liquid in the second cavity, install micro motor in the first cavity, first fan is installed on the part of first cavity to micro motor's motor shaft, and its motor shaft stretches into in the second cavity, and it installs the agitating unit who is used for accelerating the coolant liquid flow on the part of second cavity.

Preferably, the water cooling channel is further divided into a third cavity by a second partition plate, a motor shaft of the micro motor extends into the third cavity, and a second fan is mounted on a part of the third cavity.

Preferably, the stirring device comprises a mounting ring, a plurality of mounting rods are equidistantly arranged on the mounting ring, the mounting rods are L-shaped, a first stirring sheet is arranged on the short side of each mounting rod, and a second stirring sheet is arranged on the long side of each mounting rod.

Preferably, a sealing groove is formed in one side, close to the stirring device, of the first partition plate and the second partition plate, and a sealing strip is arranged in the sealing groove.

Preferably, a plurality of electronic cooling fins are installed on the inner wall of the first cavity, the first cooling fins are installed around the shell, a plurality of ventilation openings are formed in one end, far away from the motor shaft, of the shell, and the second cooling fins are installed on the end, far away from the motor shaft, of the shell.

Preferably, an installation screw is arranged at one end of the short side of the installation rod, and a screw hole matched with the installation screw is formed in the installation ring.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

according to the utility model, the cooling liquid in the second cavity is matched with the water cooling system formed by the stirring device, so that the heat dissipation effect is improved, after the cooling liquid absorbs heat, the kinetic energy of the cooling liquid is quickened to quickly exchange heat through the stirring device, the temperature of the motor can be effectively reduced, the efficiency and the service life of the motor are improved, and meanwhile, the heat generated by the motor is dissipated into the environment through the arrangement of the first fan, the second fan, the electronic radiating fins, the first radiating fins and the second radiating fins, so that the heat dissipation effect is further improved, and the heat dissipation device is suitable for high-power applications such as electric automobiles, industrial machinery and the like.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of an explosion of the structure of the present utility model;

FIG. 3 is a schematic view of the stirring device of the present utility model;

FIG. 4 is a schematic view of the internal structure of the present utility model;

fig. 5 is an enlarged schematic view of the area a of the present utility model.

Reference numerals

1. A housing; 2. a stator; 3. a motor shaft; 4. a first separator; 5. a second separator; 6. a first cavity; 7. a second cavity; 8. a third cavity; 9. a micro motor; 10. a first fan; 11. a second fan; 12. a mounting ring; 13. installing a rod; 14. a first stirring plate; 15. a second stirring plate; 16. an electronic heat sink; 17. sealing grooves; 18. a sealing strip; 19. a screw hole; 20. a first heat sink; 21. a second heat sink; 22. a vent; 23. and (5) installing a screw.

Detailed Description

In order that the utility model may be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, however, the utility model may be embodied in many different forms and are not limited to the embodiments described herein, but are instead provided for the purpose of providing a more thorough and complete disclosure of the utility model.

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

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," "provided," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that, the structure not described in the present utility model does not relate to the design gist and the improvement direction of the present utility model, which are the same as the prior art or can be implemented by using the prior art, and the description is omitted herein.

Examples

Referring to fig. 1-5, a water-cooled permanent magnet synchronous brushless direct current motor comprises a shell 1, a stator 2 and a rotor, wherein the rotor is arranged in the stator 2 and is connected with a motor shaft 3, and a water cooling channel is formed between the shell 1 and the stator 2. The water cooling channel is divided into a first cavity 6 and a second cavity 7 by the first partition board 4, and cooling liquid is arranged in the second cavity 7. The second cavity 7 is connected with an external cooling liquid storage box through two pipelines, a water pump is arranged in the cooling liquid storage box and is communicated with one pipeline, and cooling liquid circulates from the cooling liquid storage box, the pipeline and the second cavity 7 through the water pump.

A micro motor 9 is installed in the first cavity 6, a first fan 10 is installed on a part of the first cavity 6 on a motor shaft of the micro motor 9, the motor shaft of the micro motor extends into the second cavity 7, and a stirring device for accelerating the flow of cooling liquid is installed on a part of the second cavity 7. The water cooling channel is further divided into a third cavity 8 by a second partition plate 5, a motor shaft of a micro motor 9 extends into the third cavity 8, and a second fan 11 is installed on a part of the third cavity 8. A sealing groove 17 is formed in one side, close to the stirring device, of the first partition plate 4 and the second partition plate 5, and a sealing strip 18 is arranged in the sealing groove 17. The arrangement of the sealing groove 17 and the sealing strip 18 places the leakage of the cooling liquid into the first cavity 6 and the third cavity 8.

The stirring device comprises a mounting ring 12, a plurality of mounting rods 13 are equidistantly arranged on the mounting ring 12, the mounting rods 13 are L-shaped, a first stirring sheet 14 is arranged on the short side of each mounting rod, and a second stirring sheet 15 is arranged on the long side of each mounting rod. The installation screw 23 is arranged at one end of the short side of the installation rod 13, the screw hole 19 matched with the installation screw 23 is arranged on the installation ring 12, and the installation and the disassembly are convenient through threads.

A plurality of electronic cooling fins 16 are arranged on the inner wall of the first cavity 6, a first cooling fin 20 is arranged on the periphery of the shell 1, a plurality of ventilation openings 22 are arranged on one end of the shell, which is far away from the motor shaft 3, and a second cooling fin 21 is arranged on the shell.

When the micro motor 9 rotates, the first fan 10, the second fan 11 and the mounting ring 12 are driven to rotate, the first fan 10 transfers heat absorbed by the electronic radiating fins 16 to the first partition board 4 through air acceleration, the heat directly transferred by the stator 2 is absorbed through cooling liquid, meanwhile, the cooling liquid also absorbs heat directly transferred by the stator 2, the mounting ring 12 rotates to drive the mounting rod 13 to rotate in the second cavity 7, the first stirring plate 14 and the second stirring plate 15 on the mounting rod 13 can effectively drive the cooling liquid to flow, heat exchange is fast, the second fan 11 and the ventilation opening 22 accelerate the air flow speed to perform heat exchange, and the natural cooling speed is accelerated through the arrangement of the first radiating fins 20 and the second radiating fins 21.

In summary, the utility model has reasonable design, the water cooling system formed by the simultaneous matching of the stirring devices is utilized to improve the heat dissipation effect, the temperature of the motor can be effectively reduced, the efficiency and the service life of the motor are improved, and meanwhile, the heat generated by the motor is dissipated into the environment through the arrangement of the first fan 10, the second fan 11, the electronic radiating fins 16, the first radiating fins 20 and the second radiating fins 21, so that the heat dissipation effect is further improved, and the utility model is suitable for high-power applications such as electric automobiles, industrial machinery and the like.

The foregoing examples merely illustrate certain embodiments of the utility model and are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the utility model, all of which fall within the scope of protection of the utility model; accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (6)

1. A water-cooled permanent magnet synchronous brushless DC motor is characterized in that: including casing (1), stator (2) and rotor, the rotor sets up in stator (2), and it is connected with motor shaft (3), form the water cooling passageway between casing (1) and stator (2), water cooling passageway is cut apart into first cavity (6) and second cavity (7) by first baffle (4), be provided with the coolant liquid in second cavity (7), install micromotor (9) in first cavity (6), install first fan (10) on the part of first cavity (6) of the motor shaft of micromotor (9), its motor shaft stretches into in second cavity (7), and it installs the agitating unit who is used for accelerating the coolant liquid flow on the part of second cavity (7).

2. A water-cooled permanent magnet synchronous brushless dc motor as claimed in claim 1, wherein: the water cooling channel is further divided into a third cavity (8) by a second partition plate (5), a motor shaft of the miniature motor (9) stretches into the third cavity (8), and a second fan (11) is arranged on the part of the third cavity (8).

3. A water-cooled permanent magnet synchronous brushless dc motor according to claim 1 or 2, characterized in that: the stirring device comprises a mounting ring (12), a plurality of mounting rods (13) are equidistantly arranged on the mounting ring (12), the mounting rods (13) are L-shaped, a first stirring sheet (14) is arranged on the short side of each mounting rod, and a second stirring sheet (15) is arranged on the long side of each mounting rod.

4. A water-cooled permanent magnet synchronous brushless dc motor as claimed in claim 2, wherein: a sealing groove (17) is formed in one side, close to the stirring device, of the first partition plate (4) and the second partition plate (5), and a sealing strip (18) is arranged in the sealing groove (17).

5. A water-cooled permanent magnet synchronous brushless dc motor as claimed in claim 1, wherein: the electronic radiator is characterized in that a plurality of electronic radiating fins (16) are arranged on the inner wall of the first cavity (6), a first radiating fin (20) is arranged around the casing (1), a plurality of ventilation openings (22) are formed in one end, far away from the motor shaft (3), of the casing, and a second radiating fin (21) is arranged on the casing.

6. A water-cooled permanent magnet synchronous brushless dc motor according to claim 3, wherein: one end of the short side of the mounting rod (13) is provided with a mounting screw (23), and the mounting ring (12) is provided with a screw hole (19) matched with the mounting screw (23).