CN215734072U - DC brushless motor device - Google Patents
DC brushless motor device Download PDFInfo
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- CN215734072U CN215734072U CN202121636598.5U CN202121636598U CN215734072U CN 215734072 U CN215734072 U CN 215734072U CN 202121636598 U CN202121636598 U CN 202121636598U CN 215734072 U CN215734072 U CN 215734072U
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Abstract
The utility model relates to the field of motors, and discloses a direct-current brushless motor device, which comprises: a DC brushless motor driving unit; a DC brushless motor unit electrically connected to the DC brushless motor driving unit; the Hall sensing unit is electrically connected to the DC brushless motor driving unit, and the utility model has the advantages that: the stop rotation position of the DC brushless motor (namely the stop rotation position of the fan blade of the DC brushless motor) can be controlled; there may be patterns or marks (logo) on the fan blades, and according to the present invention, the fan blades can be controlled to stop at a fixed position, a symmetrical position or a relative position; the utility model utilizes the characteristic of the DC brushless motor, the permanent magnet of the inner rotor or the outer rotor stops at the position closest to the silicon steel sheet in the static state, and the magnetic line of force of the magnetic field is shortest.
Description
Technical Field
The utility model relates to the field of motors, in particular to a direct-current brushless motor device.
Background
A motor is an electronic device that converts electrical energy into mechanical energy; most motors are powered by magnetic fields and coil winding currents. There are many types of motors, and a dc brushless motor is one of them, which does not have carbon brushes and a commutator, and uses power electronics (inverter) to transmit a control signal to the dc brushless motor, thereby switching a dc switch and a passing coil winding to generate a magnetic field to rotate a rotor including permanent magnets. Compared with a direct current brush motor, the direct current brushless motor is safer and more reliable because the carbon brush of the direct current brush motor has carbon powder problems after long-term use, and the carbon powder can explode under a high-temperature environment, so the direct current brush motor needs to be cleaned regularly, and meanwhile, the maintenance cost is higher.
Unfortunately, most situations involve stopping or braking the dc brushless motor naturally when the dc brushless motor is stopped, without controlling the stopping position of the dc brushless motor for further use; for example, the fan blade of the dc brushless motor is usually printed with a manufacturer's pattern or logo (logo), and if the dc brushless motor is left to stop or brake naturally when the dc brushless motor is stopped, the pattern or logo on the fan blade of the dc brushless motor may become skewed and not immediately recognizable or look asymmetric and beautiful.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned shortcomings, and providing a technical solution to solve the above-mentioned problems.
A dc brushless motor apparatus, comprising:
a DC brushless motor driving unit;
a DC brushless motor unit electrically connected to the DC brushless motor driving unit;
a Hall sensing unit electrically connected to the DC brushless motor driving unit,
the DC brushless motor unit includes:
the first contact is electrically connected to the DC brushless motor driving unit;
the second contact is electrically connected to the DC brushless motor driving unit;
a DC brushless motor electrically connected to the DC brushless motor driving unit through a first contact and the second contact,
when the DC brushless motor device works in the motor, the DC brushless motor driving unit is configured to drive the DC brushless motor to rotate through the first contact and the second contact; when the DC brushless motor device is powered off, the Hall sensing unit is configured to sense the motor speed of the DC brushless motor to inform the DC brushless motor driving unit of the motor speed of the DC brushless motor, and when the motor speed of the DC brushless motor is less than the preset motor speed, the DC brushless motor driving unit is configured to transmit a negative voltage to the first contact, and the DC brushless motor driving unit is configured to transmit a positive voltage to the second contact to form a braking current flowing into the DC brushless motor through the second contact and flowing out of the DC brushless motor through the first contact, and the DC brushless motor is configured to generate a magnetic field to stop the rotation of the DC brushless motor by using the braking current.
Compared with the prior art, the utility model has the beneficial effects that: the stop rotation position of the DC brushless motor (namely the stop rotation position of the fan blade of the DC brushless motor) can be controlled; there may be patterns or marks (logo) on the fan blades, and according to the present invention, the fan blades can be controlled to stop at a fixed position, a symmetrical position or a relative position; the utility model utilizes the characteristic of the DC brushless motor, the permanent magnet of the inner rotor or the outer rotor stops at the position closest to the silicon steel sheet in the static state, and the magnetic line of force of the magnetic field is shortest.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a dc brushless motor apparatus according to the present invention.
Fig. 2 is a block diagram of a dc brushless motor apparatus of the present invention and having a 4-slot 4-pole single phase architecture.
Fig. 3 is a schematic view of an embodiment described in conjunction with fig. 2.
Fig. 4 is a schematic view of another embodiment described in conjunction with fig. 2.
In the figure: 10: a DC brushless motor device, 102: a DC brushless motor driving unit, 104: a DC brushless motor unit, 106: a Hall sensing unit, 108: a housing, 1022: a negative voltage, 1024: a positive voltage, 1042: a first contact, 1044: a second contact, 1046: a DC brushless motor, 1048: a motor stator structure, 1050: a motor rotor structure, 1052: a coil, 1054: a brake current, S: S pole, N: N pole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a block diagram of a dc brushless motor apparatus according to the present invention is shown. The present invention provides a dc brushless motor apparatus 10, comprising a dc brushless motor driving unit 102, a dc brushless motor unit 104 and a hall sensing unit 106, wherein the dc brushless motor unit 104 comprises a first contact 1042, a second contact 1044 and a dc brushless motor 1046, which are electrically connected to each other. The dc brushless motor driving unit 102 is a dc brushless motor driver; the hall sensing unit 106 is a hall sensor.
When the dc brushless motor apparatus 10 is in a motor operation process, the dc brushless motor driving unit 102 is configured to drive the dc brushless motor 1046 to rotate through the first contact 1042 and the second contact 1044; when the dc brushless motor apparatus 10 is in the motor power-off process, the hall sensing unit 106 is configured to sense the motor speed of the dc brushless motor 1046 to inform the dc brushless motor driving unit 102 of the motor speed of the dc brushless motor 1046, and when the motor speed of the dc brushless motor 1046 is less than a predetermined motor speed (i.e., when the dc brushless motor 1046 is about to stop), the dc brushless motor driving unit 102 is configured to transmit a negative voltage 1022 to the first node 1042, and the dc brushless motor driving unit 102 is configured to transmit a positive voltage 1024 to the second contact 1044, to form a brake current 1054 flowing into the dc brushless motor 1046 through the second contact 1044 and flowing out of the dc brushless motor 1046 through the first contact 1042, and the dc brushless motor 1046 is configured to generate a magnetic field to stop the rotation of the dc brushless motor 1046 by the braking current 1054. The working process of the motor refers to that: the dc brushless motor driving unit 102 drives the dc brushless motor 1046 to rotate; the above-mentioned motor power-off process means: the dc brushless motor 1046 is stopped by the dc brushless motor driving unit 102 until the dc brushless motor 1046 stops rotating.
Referring to fig. 2, it is a block diagram of a dc brushless motor device having a 4-slot 4-pole single-phase frame according to the present invention; the elements shown in FIG. 2 are the same as those shown in FIG. 1, and for the sake of brevity, their description is not repeated here. The dc brushless motor apparatus 10 further includes a housing 108, the dc brushless motor 1046 includes a motor stator structure 1048 and a motor rotor structure 1050, the motor stator structure 1048 at least includes a plurality of coils 1052, the motor stator structure 1048 is electrically connected to the dc brushless motor driving unit 102, the motor stator structure 1048 is disposed in the housing 108, the motor rotor structure 1050 is disposed in the housing 108, and the plurality of coils 1052 is electrically connected to the dc brushless motor driving unit 102.
When the dc brushless motor apparatus 10 is in the motor power-off process and when the motor speed of the dc brushless motor 1046 is less than the predetermined motor speed, the dc brushless motor driving unit 102 is configured to transmit the negative voltage 1022 to the first contact 1042, and the dc brushless motor driving unit 102 is configured to transmit the positive voltage 1024 to the second contact 1044, so as to form the braking current 1054 flowing into the plurality of coils 1052 through the second contact 1044 and flowing out of the plurality of coils 1052 through the first contact 1042, and the motor stator structure 1048 is configured to utilize the braking current 1054 to generate the magnetic field to attract and stop the rotation of the motor rotor structure 1050.
In the first embodiment of the present invention shown in fig. 2, the dc brushless motor 1046 is a 4-slot 4-pole single-phase dc brushless motor; please refer to fig. 3, which is a schematic diagram of an embodiment of the description of fig. 2; please refer to fig. 4, which is a schematic diagram of another embodiment described in conjunction with fig. 2; in fig. 3 and 4, S represents an S pole, and N represents an N pole; a duty cycle of the 4-slot 4-pole single-phase brushless dc motor is defined as a time of phase change of at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 4-slot 4-pole single-phase brushless DC motor comprises 2 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 2 duty cycles is 180 degrees; the motor stator structure 1048 is configured to utilize the brake current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at a pattern symmetric location on the 4-slot 4-pole single-phase dc brushless motor.
In the second embodiment of the present invention, the dc brushless motor 1046 is a 6-slot 6-pole single-phase dc brushless motor; a duty cycle of the 6-slot 6-pole single-phase brushless dc motor is defined as a time of phase change of at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 6-slot 6-pole single-phase brushless DC motor comprises 3 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 3 duty cycles is 120 degrees; the motor stator structure 1048 is configured to utilize the braking current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at a pattern versus angle position on the 6 slot 6 pole single phase dc brushless motor.
In the third embodiment of the present invention, the dc brushless motor 1046 is an 8-slot, 8-pole, single-phase dc brushless motor; a duty cycle of the 8-slot 8-pole single-phase brushless dc motor is defined as a time of phase change of at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 8-slot 8-pole single-phase brushless DC motor comprises 4 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 4 duty cycles is 90 degrees; the motor stator structure 1048 is configured to utilize the braking current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at a pattern symmetric location on the 8-slot 8-pole single-phase dc brushless motor.
In the fourth embodiment of the present invention, the dc brushless motor 1046 is a 10-slot 10-pole single-phase dc brushless motor; a duty cycle of the 10-slot 10-pole single-phase brushless dc motor is defined as a time of phase change of at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 10-slot 10-pole single-phase brushless DC motor comprises 5 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 5 duty cycles is 72 degrees; the motor stator structure 1048 is configured to utilize the braking current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at a pattern versus angle position on the 10 slot 10 pole single phase dc brushless motor.
In the fifth embodiment of the present invention, the dc brushless motor 1046 is a 12-slot 12-pole single-phase dc brushless motor; a duty cycle of the 12-slot 12-pole single-phase brushless dc motor is defined as a time of phase change of at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 12-slot 12-pole single-phase brushless DC motor comprises 6 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 6 duty cycles is 60 degrees; the motor stator structure 1048 is configured to utilize the braking current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at a pattern versus angle position on the 12 slot 12 pole single phase dc brushless motor.
In the sixth embodiment of the present invention, the dc brushless motor 1046 is a 3-slot 2-pole three-phase dc brushless motor; a duty cycle of the 3-slot 2-pole three-phase brushless dc motor is defined as six times of phase change of at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 3-slot 2-pole three-phase brushless DC motor comprises 1 working cycle; the relative angle of rotation of the motor rotor structure 1050 formed in the 1 working cycle is 360 degrees; the braking current 1054 is a six-step square wave; the motor stator structure 1048 is configured to utilize the brake current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 rotating at a pattern fixed location on the 3 slot 2 pole three phase dc brushless motor.
In the seventh embodiment of the present invention, the dc brushless motor 1046 is a 6-slot 4-pole three-phase dc brushless motor; a duty cycle of the 6-slot 4-pole three-phase brushless dc motor is defined as six times of phase change of at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 6-slot 4-pole three-phase DC brushless motor comprises 2 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 2 duty cycles is 180 degrees; the braking current 1054 is a six-step square wave; the motor stator structure 1048 is configured to utilize the brake current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at a pattern symmetric location on the 6 slot 4 pole three phase dc brushless motor.
In the eighth embodiment of the present invention, the dc brushless motor 1046 is a 6-slot, 8-pole, three-phase dc brushless motor; the duty cycle of the 6-slot 8-pole three-phase brushless dc motor is defined as six times of phase change for at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 6-slot 8-pole three-phase brushless DC motor comprises 4 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 4 duty cycles is 90 degrees; the braking current 1054 is a six-step square wave; the motor stator structure 1048 is configured to utilize the brake current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at a pattern symmetric location on the 6 slot 8 pole three phase dc brushless motor.
In the ninth embodiment of the present invention, the dc brushless motor 1046 is a 9-slot 6-pole three-phase dc brushless motor; the duty cycle of the 9-slot 6-pole three-phase brushless dc motor is defined as six times of phase change for at least one N pole and at least one S pole of the magnetic field generated by the motor stator structure 1048 by the brake current 1054; the 9-slot 6-pole three-phase brushless DC motor comprises 3 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 3 duty cycles is 120 degrees; the braking current 1054 is a six-step square wave; the motor stator structure 1048 is configured to utilize the brake current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at the pattern subtended angle position on the 9 slot 6 pole three phase dc brushless motor.
In the tenth embodiment of the present invention, the dc brushless motor 1046 is a 9-slot 12-pole three-phase dc brushless motor; the duty cycle of the 9-slot 12-pole three-phase brushless dc motor is defined as that the stator structure 1048 of the motor uses at least one N pole and at least one S pole of the magnetic field generated by the brake current 1054 to perform six phase-changes respectively; the 9-slot 12-pole three-phase brushless DC motor comprises 6 working cycles; the relative angle of rotation of the motor rotor structure 1050 formed in each of the 6 duty cycles is 60 degrees; the braking current 1054 is a six-step square wave; the motor stator structure 1048 is configured to utilize the brake current 1054 to generate the magnetic field to attract and stop the motor rotor structure 1050 from rotating at the pattern subtended angle position on the 9 slot 12 pole three phase dc brushless motor.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (12)
1. A dc brushless motor apparatus, comprising:
a DC brushless motor driving unit;
a DC brushless motor unit electrically connected to the DC brushless motor driving unit;
a Hall sensing unit electrically connected to the DC brushless motor driving unit,
the DC brushless motor unit includes:
the first contact is electrically connected to the DC brushless motor driving unit;
the second contact is electrically connected to the DC brushless motor driving unit;
a DC brushless motor electrically connected to the DC brushless motor driving unit through a first contact and the second contact,
when the DC brushless motor device works in the motor, the DC brushless motor driving unit is configured to drive the DC brushless motor to rotate through the first contact and the second contact; when the DC brushless motor device is powered off, the Hall sensing unit is configured to sense the motor speed of the DC brushless motor to inform the DC brushless motor driving unit of the motor speed of the DC brushless motor, and when the motor speed of the DC brushless motor is less than the preset motor speed, the DC brushless motor driving unit is configured to transmit a negative voltage to the first contact, and the DC brushless motor driving unit is configured to transmit a positive voltage to the second contact to form a braking current flowing into the DC brushless motor through the second contact and flowing out of the DC brushless motor through the first contact, and the DC brushless motor is configured to generate a magnetic field to stop the rotation of the DC brushless motor by using the braking current.
2. A dc brushless motor apparatus according to claim 1, wherein: also comprises a shell body which is provided with a plurality of holes,
the DC brushless motor includes:
a motor stator structure electrically connected to the DC brushless motor driving unit, the motor stator structure being disposed within the housing;
a motor rotor structure disposed within the housing,
the motor stator structure includes:
a plurality of coils electrically connected to the DC brushless motor driving unit,
when the DC brushless motor device is powered off and the motor speed of the DC brushless motor is less than the preset motor speed, the DC brushless motor driving unit is configured to transmit a negative voltage to the first contact, and the DC brushless motor driving unit is configured to transmit a positive voltage to the second contact, so as to form a braking current flowing into the plurality of coils through the second contact and flowing out of the plurality of coils through the first contact, and the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the rotation of the motor rotor structure.
3. A dc brushless motor apparatus according to claim 2, wherein: the direct-current brushless motor is a 4-slot 4-pole single-phase direct-current brushless motor; the working cycle of the 4-slot 4-pole single-phase brushless DC motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively subjected to phase change once; the 4-slot 4-pole single-phase brushless DC motor comprises 2 working cycles; the relative included angle of rotation of the motor rotor structure formed in each of the 2 working periods is 180 degrees; the motor stator structure is configured to utilize a braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at a pattern symmetric position on a 4-slot 4-pole single-phase DC brushless motor.
4. A dc brushless motor apparatus according to claim 2, wherein: the direct-current brushless motor is a 6-slot 6-pole single-phase direct-current brushless motor; the working cycle of the 6-slot 6-pole single-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively subjected to phase change once; the 6-slot 6-pole single-phase DC brushless motor comprises 3 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 3 working periods is 120 degrees; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at the relative included angle position of the pattern on the 6-slot 6-pole single-phase DC brushless motor.
5. A dc brushless motor apparatus according to claim 2, wherein: the direct-current brushless motor is an 8-slot 8-pole single-phase direct-current brushless motor; the working cycle of the 8-slot 8-pole single-phase brushless DC motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively subjected to phase change once; the 8-slot 8-pole single-phase brushless DC motor comprises 4 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 4 working periods is 90 degrees; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at a pattern symmetric position on an 8-slot 8-pole single-phase DC brushless motor.
6. A dc brushless motor apparatus according to claim 2, wherein: the direct-current brushless motor is a 10-slot 10-pole single-phase direct-current brushless motor; the working cycle of the 10-slot 10-pole single-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively subjected to phase change once; the 10-slot 10-pole single-phase DC brushless motor comprises 5 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 5 working periods is 72 degrees; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at the relative included angle position of the pattern on the 10-slot 10-pole single-phase DC brushless motor.
7. A dc brushless motor apparatus according to claim 2, wherein: the direct-current brushless motor is a 12-slot 12-pole single-phase direct-current brushless motor; the working cycle of the 12-slot 12-pole single-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively subjected to phase change once; the 12-slot 12-pole single-phase DC brushless motor comprises 6 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 6 working cycles is 60 degrees; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at the relative angular positions of the patterns on the 12-slot 12-pole single-phase DC brushless motor.
8. A dc brushless motor apparatus according to claim 2, wherein: the direct current brushless motor is a 3-slot 2-pole three-phase direct current brushless motor; the working cycle of the 3-slot 2-pole three-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively phase-exchanged for six times; the 3-slot 2-pole three-phase DC brushless motor comprises 1 working cycle; the relative included angle of rotation of the motor rotor structure formed by 1 working cycle is 360 degrees; the brake current is six-step square wave; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop rotation of the motor rotor structure at a pattern-fixed location on the 3-slot, 2-pole, three-phase, brushless DC motor.
9. A dc brushless motor apparatus according to claim 2, wherein: the direct-current brushless motor is a 6-slot 4-pole three-phase direct-current brushless motor; the working cycle of the 6-slot 4-pole three-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively phase-exchanged for six times; the 6-slot 4-pole three-phase DC brushless motor comprises 2 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 2 working periods is 180 degrees; the brake current is six-step square wave; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at a pattern symmetric position on the 6-slot 4-pole three-phase DC brushless motor.
10. A dc brushless motor apparatus according to claim 2, wherein: the direct current brushless motor is a 6-slot 8-pole three-phase direct current brushless motor; the working cycle of the 6-slot 8-pole three-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively phase-exchanged for six times; the 6-slot 8-pole three-phase DC brushless motor comprises 4 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 4 working periods is 90 degrees; the brake current is six-step square wave; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at a pattern symmetric position on the 6-slot 8-pole three-phase DC brushless motor.
11. A dc brushless motor apparatus according to claim 2, wherein: the direct current brushless motor is a 9-slot 6-pole three-phase direct current brushless motor; the working cycle of the 9-slot 6-pole three-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively phase-exchanged for six times; the 9-slot 6-pole three-phase DC brushless motor comprises 3 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 3 working periods is 120 degrees; the brake current is six-step square wave; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at the relative included angle position of the pattern on the 9-slot 6-pole three-phase DC brushless motor.
12. A dc brushless motor apparatus according to claim 2, wherein: the direct current brushless motor is a 9-slot 12-pole three-phase direct current brushless motor; the working cycle of the 9-slot 12-pole three-phase DC brushless motor is defined as that at least one N pole and at least one S pole of a magnetic field generated by a motor stator structure by using brake current are respectively phase-exchanged for six times; the 9-slot 12-pole three-phase DC brushless motor comprises 6 working cycles; the relative included angle of rotation of the motor rotor structure formed by each of the 6 working periods is 60 degrees; the brake current is six-step square wave; the motor stator structure is configured to utilize the braking current to generate the magnetic field to attract and stop the motor rotor structure from rotating at the position of the relative included angle of the pattern on the 9-slot 12-pole three-phase DC brushless motor.
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|---|---|---|---|
| CN202121636598.5U CN215734072U (en) | 2021-07-19 | 2021-07-19 | DC brushless motor device |
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|---|---|---|---|
| CN202121636598.5U CN215734072U (en) | 2021-07-19 | 2021-07-19 | DC brushless motor device |
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