CN216390749U - Built-in controller for DC brushless motor - Google Patents
Built-in controller for DC brushless motor Download PDFInfo
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- CN216390749U CN216390749U CN202122108751.3U CN202122108751U CN216390749U CN 216390749 U CN216390749 U CN 216390749U CN 202122108751 U CN202122108751 U CN 202122108751U CN 216390749 U CN216390749 U CN 216390749U
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- heat dissipation
- controller
- rotor
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- end cover
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 60
- 238000005192 partition Methods 0.000 claims abstract description 21
- 238000009423 ventilation Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000000428 dust Substances 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a built-in controller for a direct-current brushless motor, which relates to the technical field of brushless motors and comprises a shell, a front end cover and a rear end cover, wherein one end of the shell is fixedly connected with the front end cover, the other end of the shell is fixedly connected with the rear end cover, a partition plate is fixedly arranged at one end, close to the rear end cover, in the shell, and a heat dissipation cavity is formed between the partition plate and the rear end cover. The utility model is characterized in that a special built-in controller is arranged in the brushless DC motor to install a heat dissipation chamber, the heat dissipation chamber is provided with a miniature centrifugal fan, heat dissipation fins, heat dissipation holes and ventilation holes, the miniature centrifugal fan is matched with the heat dissipation chamber to perform heat dissipation treatment on the heat dissipation chamber, external gas flows through the ventilation holes when the miniature centrifugal fan rotates, and hot gas in the heat dissipation chamber is exhausted outside under the action of the heat dissipation fins and the heat dissipation holes, so that gas exchange in the heat dissipation chamber is formed, the temperature in the heat dissipation chamber is reduced, and the built-in controller is subjected to cooling treatment.
Description
Technical Field
The utility model relates to the technical field of brushless motors, in particular to a built-in controller for a direct-current brushless motor.
Background
The prior art direct current brushless motor system includes direct current brushless motor body and controller, and the controller is with installing two kinds of modes of direct current brushless motor body: one is external, namely the controller and the direct current brushless motor body are separately installed; the other type is built-in type, and the controller is arranged in the direct current brushless motor body. The built-in controller is generally made into a ring shape and comprises a plurality of field effect transistors (MOS) which are generally six, a switch component of the controller is formed, each MOS transistor can pass through current to generate power loss, meanwhile, the power loss is accumulated on each MOS transistor in a heat mode, and if the temperature of any MOS transistor exceeds the working junction temperature of the MOS transistor, the MOS transistor is easily burnt, so that the whole controller cannot work.
The direct current brushless motor system with the built-in controller in the prior art has the following defects: because the MOS tube has poor heat dissipation conditions, and the controller is arranged in the DC brushless motor body, the favorable heat dissipation conditions are lacked, the performance of the controller is unstable, and the overload capacity and the power level of a motor system are limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a built-in controller for a direct current brushless motor, which aims to solve the following defects of a direct current brushless motor system with the built-in controller in the prior art, which is provided by the background art: because the MOS tube has poor heat dissipation conditions, and the controller is arranged in the DC brushless motor body, the favorable heat dissipation conditions are lacked, the performance of the controller is unstable, and the overload capacity and the power grade of a motor system are limited.
In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:
a built-in controller for a direct current brushless motor comprises a shell, a front end cover and a rear end cover, wherein one end of the shell is fixedly connected with the rear end cover, the other end of the shell is fixedly connected with the rear end cover, a partition plate is fixedly arranged at one end, close to the rear end cover, in the shell, a heat dissipation cavity is formed between the partition plate and the rear end cover, a groove is formed in the inner surface, close to the partition plate, of one side of the rear end cover, heat dissipation fins are embedded in the groove, a mounting plate is fixedly arranged on the surface of one side of each heat dissipation fin, a built-in controller is fixedly arranged on the surface of the mounting plate, a plurality of mounting plates are arranged on the surface of the other side of the rear end cover, the mounting plates penetrate through the rear end cover and extend to the surface of one side of each heat dissipation fin, a plurality of ventilation holes are formed in the outer surface, and a miniature centrifugal fan is fixedly connected to the upper end in the heat dissipation cavity, and the outer surface of the shell is positioned right above the ventilation hole and is fixedly connected with a dust screen.
Preferably, the inside of shell is provided with the stator, the inside of stator is provided with first rotor, permanent magnet steel and second rotor, the inside one end of stator is provided with first rotor, the inside middle part of stator is provided with permanent magnet steel, the inside other end of stator is provided with the second rotor, permanent magnet steel's both sides surface respectively with a side surface looks butt of first rotor and second rotor, the opposite side surface of first rotor is provided with the bearing, the internal rotation of bearing is connected with the pivot.
Preferably, a fixed block is fixedly connected to the surface of one side of the outer edge of the radiating fin, one side of the miniature centrifugal fan is fixedly connected with the fixed block, the other side of the miniature centrifugal fan is fixedly connected with the surface of one side of the partition plate, the miniature centrifugal fan is fixedly installed inside the radiating chamber through the fixed block and the partition plate, and the fixed block corresponds to the ventilating holes.
Preferably, one end of the rotating shaft penetrates through the front end cover and extends to one side of the outer portion of the front end cover, and the other end of the rotating shaft penetrates through the first rotor, the permanent magnetic steel and the second rotor and is fixedly connected with the first rotor, the permanent magnetic steel and the second rotor.
Preferably, the ventilation hole is provided with a stator hole at the position of the outer surface of the shell, the ventilation hole is provided with two holes at the position of the inner surface of the shell, and the holes are communicated with each other.
Preferably, the outer edge surface of the partition plate is provided with a plurality of threading holes.
Preferably, the glass fiber heat insulation material is adopted.
Compared with the prior art, the utility model provides a built-in controller for a direct current brushless motor, which has the following beneficial effects:
according to the utility model, the special built-in controller is arranged in the brushless DC motor to install the heat dissipation chamber, the miniature centrifugal fan, the heat dissipation fins, the heat dissipation holes and the ventilation holes are arranged in the heat dissipation chamber to be matched for further heat dissipation treatment on the heat dissipation chamber, external gas is discharged from the ventilation holes when the miniature centrifugal fan rotates, and hot gas in the heat dissipation chamber is discharged outside under the action of the heat dissipation fins and the heat dissipation holes, so that gas exchange in the heat dissipation chamber is formed, the temperature in the heat dissipation chamber is reduced, the built-in controller is further cooled, the stability of the performance of the controller is ensured, and the overload capacity and the power level of a motor system are further ensured.
Drawings
Fig. 1 is a schematic structural diagram of a built-in controller for a dc brushless motor according to the present invention;
the reference numbers in the figures are:
1. a housing; 2. a front end cover; 3. a rear end cap; 4. a stator; 5. a first rotor; 6. permanent magnetic steel; 7. a second rotor; 8. a bearing; 9. a rotating shaft; 10. a partition plate; 11. a heat dissipation chamber; 12. a heat dissipating fin; 13. Mounting a plate; 14. a built-in controller; 15. heat dissipation holes; 16. a fixed block; 17. a miniature centrifugal fan; 18. A ventilation hole; 19. a dust screen.
Detailed Description
The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Referring to fig. 1, a built-in controller for a dc brushless motor includes a housing 1, a front end cover 2 and a rear end cover 3, one end of the housing 1 is fixedly connected with the front end cover 2, the other end of the housing 1 is fixedly connected with the rear end cover 3, a partition plate 10 is fixedly installed inside the housing 1 near one end of the rear end cover 3, a heat dissipation chamber 11 is formed between the partition plate 10 and the rear end cover 3, a groove is formed on an inner surface of one side of the rear end cover 3 near the partition plate 10, a heat dissipation fin 12 is embedded in the groove, a mounting plate 13 is fixedly installed on a surface of one side of the heat dissipation fin 12, a built-in controller 14 is fixedly installed on a surface of the mounting plate 13, a plurality of mounting plates 13 are installed on the surface of the other side of the rear end cover 3, the mounting plates 13 extend to a surface of one side of the heat dissipation fin 12 through the rear end cover 3, a plurality of ventilation holes 18 are formed on an outer surface of one side of the housing 1 near the rear end cover 3, the upper end of the interior of the heat dissipation chamber 11 is fixedly connected with a miniature centrifugal fan 17, and the outer surface of the shell 1 is positioned right above the ventilation hole 18 and is fixedly connected with a dust screen 19.
Specifically, the inside of shell 1 is provided with stator 4, the inside of stator 4 is provided with first rotor 5, permanent magnet steel 6 and second rotor 7, the inside one end of stator 4 is provided with first rotor 5, the inside middle part of stator 4 is provided with permanent magnet steel 6, the inside other end of stator 4 is provided with second rotor 7, permanent magnet steel 6's both sides surface respectively with first rotor 5 and second rotor 7's a side surface looks butt, first rotor 5's opposite side surface is provided with bearing 8, bearing 8's internal rotation is connected with pivot 9.
Specifically, a fixed block 16 is fixedly connected to the surface of one side of the outer edge of the heat dissipation fin 12, one side of the micro centrifugal fan 17 is fixedly connected to the fixed block 16, the other side of the micro centrifugal fan 17 is fixedly connected to the surface of one side of the partition plate 10, the micro centrifugal fan 17 is fixedly installed inside the heat dissipation chamber 11 through the fixed block 16 and the partition plate 10, and the fixed block 16 corresponds to the position of the ventilation hole 18.
Specifically, one end of the rotating shaft 9 penetrates through the front end cover 2 and extends to one side of the outside of the front end cover 2, and the other end of the rotating shaft 9 penetrates through the first rotor 5, the permanent magnetic steel 6 and the second rotor 7 and is fixedly connected with the first rotor 5, the permanent magnetic steel 6 and the second rotor 7.
It is specific, four holes have been seted up to scavenge port 18 position in 1 outer surface position department of shell, scavenge port 18 position in 1 inner surface position department of shell has seted up two holes, and communicate each other between the hole, four holes of external setting prevent that 19 surfaces of dust screen from piling up the dust, thereby influence the efficiency of admitting air of scavenge port 18, two holes of built-in chain are linked together with four holes of external setting and constitute scavenge port 18, take a breath to heat dissipation cavity 11 inside under miniature centrifugal fan 17 and heat dissipation hole 18's effect, thereby reduce the inside temperature of heat dissipation cavity 11, and then handle built-in controller 14 and then the cooling.
Specifically, a plurality of through wires holes have been seted up along the surface outward of division board 10, and a plurality of through wires holes are used for electric connection between built-in controller 14's wire and the stator 4, and division board 10 adopts the thermal-insulated material of glass fiber, and the division board 10 of thermal-insulated material prevents that the heat that produces between stator 4 and the rotor from dispelling to heat dissipation cavity 11 inside, avoids giving the inside extra heat burden that increases of heat dissipation cavity 11.
The working principle and the using process of the utility model are as follows: after the motor system is installed, when the motor system is checked to be used without errors, the 17 miniature centrifugal fan and the 17 miniature centrifugal fan are started to rotate to drive air in the heat dissipation chamber 11 to flow, external air flows into the heat dissipation chamber 11 through the ventilating holes 18 under the action of the ventilating holes 18, hot air in the heat dissipation chamber 11 is dissipated to the outside under the action of the heat dissipation fins 12 and the heat dissipation holes 15, and therefore air exchange in the heat dissipation chamber 11 is formed, the temperature in the heat dissipation chamber 11 is reduced, the built-in controller 14 is cooled, the stability of the performance of the built-in controller 14 is guaranteed, and the overload capacity and the power level of the motor system are guaranteed.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a direct current brushless motor is with built-in controller, includes shell (1), front end housing (2) and rear end cap (3), its characterized in that: the heat dissipation device is characterized in that a front end cover (2) is fixedly connected to one end of the shell (1), a rear end cover (3) is fixedly connected to the other end of the shell (1), a partition plate (10) is fixedly mounted at one end, close to the rear end cover (3), of the inside of the shell (1), a heat dissipation cavity (11) is formed between the partition plate (10) and the rear end cover (3), a groove is formed in the inner surface, close to one side of the partition plate (10), of the rear end cover (3), heat dissipation fins (12) are embedded in the groove, a mounting plate (13) is fixedly mounted on the surface of one side of each heat dissipation fin (12), a built-in controller (14) is fixedly mounted on the surface of one side of each mounting plate (13), a plurality of the mounting plates (13) are formed in the surface of the other side of the rear end cover (3), and the mounting plates (13) extend to one side surface of each heat dissipation fin (12) through the rear end cover (3), the outer surface of one side, close to the rear end cover (3), of the shell (1) is provided with a plurality of ventilation holes (18), the upper end of the inside of the heat dissipation chamber (11) is fixedly connected with a miniature centrifugal fan (17), and the outer surface of the shell (1) is located right above the ventilation holes (18) and is fixedly connected with a dust screen (19).
2. The built-in controller for a dc brushless motor according to claim 1, wherein: the inside of shell (1) is provided with stator (4), the inside of stator (4) is provided with first rotor (5), permanent magnet steel (6) and second rotor (7), the inside one end of stator (4) is provided with first rotor (5), the inside middle part of stator (4) is provided with permanent magnet steel (6), the inside other end of stator (4) is provided with second rotor (7), the both sides surface of permanent magnet steel (6) respectively with a side surface looks butt of first rotor (5) and second rotor (7), the opposite side surface of first rotor (5) is provided with bearing (8), the internal rotation of bearing (8) is connected with pivot (9).
3. The built-in controller for a dc brushless motor according to claim 1, wherein: the surface of one side of the outer edge of each radiating fin (12) is fixedly connected with a fixed block (16), one side of each miniature centrifugal fan (17) is fixedly connected with the fixed block (16), the other side of each miniature centrifugal fan is fixedly connected with the surface of one side of each partition plate (10), each miniature centrifugal fan (17) is fixedly installed in each radiating chamber (11) through the corresponding fixed block (16) and the corresponding partition plate (10), and the positions of the fixed blocks (16) and the positions of the ventilation holes (18) correspond to each other.
4. The built-in controller for a dc brushless motor according to claim 2, wherein: the one end of pivot (9) runs through front end housing (2) and extends to the outside one side of front end housing (2), the other end of pivot (9) runs through first rotor (5), permanent magnet steel (6), second rotor (7) and with first rotor (5), permanent magnet steel (6), second rotor (7) fixed connection.
5. The built-in controller for a dc brushless motor according to claim 1, wherein: the ventilating hole (18) is provided with four holes at the position of the outer surface of the shell (1), the ventilating hole (18) is provided with two holes at the position of the inner surface of the shell (1), and the holes are communicated with each other.
6. The built-in controller for a dc brushless motor according to claim 1, wherein: the outer edge surface of the partition plate (10) is provided with a plurality of threading holes.
7. The built-in controller for a dc brushless motor according to claim 6, wherein: the partition plate (10) is made of glass fiber heat insulation materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122108751.3U CN216390749U (en) | 2021-09-02 | 2021-09-02 | Built-in controller for DC brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122108751.3U CN216390749U (en) | 2021-09-02 | 2021-09-02 | Built-in controller for DC brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216390749U true CN216390749U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122108751.3U Active CN216390749U (en) | 2021-09-02 | 2021-09-02 | Built-in controller for DC brushless motor |
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| Country | Link |
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| CN (1) | CN216390749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447170A (en) * | 2023-05-23 | 2023-07-18 | 北京襄立华科技有限公司 | Small-size centrifugal fan of high efficiency, high wind pressure |
-
2021
- 2021-09-02 CN CN202122108751.3U patent/CN216390749U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116447170A (en) * | 2023-05-23 | 2023-07-18 | 北京襄立华科技有限公司 | Small-size centrifugal fan of high efficiency, high wind pressure |
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