CN201805394U - A single-phase brushless motor controller - Google Patents

Abstract

The utility model discloses a single-phase brushless motor controller, including hall element detecting element (1), logic control unit (2), drive circuit unit (3) and stator winding, logic control unit (2) include triode switch circuit and resistance R2, signal output part (11) connecting resistance R2 one end of hall element detecting element (1), output (21) of logic control unit (2) are regarded as to resistance R2's the other end, triode switch circuit's input is still connected in signal output part (11) of hall element detecting element (1), triode switch circuit's output is regarded as an output (22) of logic control unit (2), output (21, 22) of logic control unit (2) form the interlocking relation of high-low level. The utility model discloses circuit structure is simple, job stabilization, and the function is perfect, and reduction in production cost improves production efficiency.

Description

A single-phase brushless motor controller

Technical field:

The utility model relates to a single-phase brushless motor controller.

Background technique:

The traditional single-phase brushless motor controller consists of a Hall element, a control chip, a driver chip and a single set of windings. The Hall element collects the level signal of the rotor position, transmits it to the control chip, and outputs it to the driver chip through the control chip. , which is output from the driver chip to the winding unit to achieve the purpose of driving the motor. This kind of technical scheme has higher cost, complex circuit, unstable work and inconvenient use.

Invention content:

The purpose of the utility model is to provide a simple single-phase brushless motor controller, which is composed of a Hall element, a single triode and two powers, which simplifies the structure of the single-phase brushless motor controller, reduces the cost and stabilizes the working circuit.

The purpose of this utility model is achieved through the following technical solutions.

A single-phase brushless motor controller, including a Hall element detection unit, a logic control unit, a drive circuit unit and a stator winding, the Hall element detection unit detects the rotor position signal through the Hall element and outputs it to the logic control unit, and the logic control After the unit judges the signal, it outputs to the drive circuit unit. The drive circuit unit controls the power on and off of the stator winding. The logic control unit includes a triode switch circuit and a resistor R2. The signal output terminal of the Hall element detection unit is connected to one end of the resistor R2 and the other end of the resistor R2. As an output terminal of the logic control unit, the signal output terminal of the Hall element detection unit is also connected to the input terminal of the triode switch circuit, and the output terminal of the triode switch circuit is used as an output terminal of the logic control unit, and the output terminal of the logic control unit forms a high-low Level interlock relationship.

The triode switch circuit described above comprises a triode Q1 and resistors R1, R4, and R5. The collector of the triode Q1 is connected to the power supply Vcc, and the emitter of the triode Q1 is connected to the resistor R5 and then grounded; the base of the triode Q1 is connected to the resistor R1 through the resistor R1. The signal output terminal of the Er element detection unit is connected directly from the emitter of the triode Q1 as an output terminal of the logic control unit.

The drive circuit unit described above includes a power transistor Q2 and a power transistor Q3, and the stator winding includes a first winding and a second winding. The first winding and the second winding have a common terminal and are connected to the power supply Vbus. The tied winding and the second tied winding are respectively connected to the collectors of the power transistor Q2 and the power transistor Q3, the emitters of the power transistor Q2 and the power transistor Q3 are grounded, and the bases of the power transistor Q2 and the power transistor Q3 are respectively connected to the output of the logic control unit end connection.

The driving circuit unit described above further includes a capacitor C1 and a capacitor C2, the capacitor C1 is connected between the base of the power transistor Q2 and the ground, and the capacitor C2 is connected between the base of the power transistor Q3 and the ground.

The Hall element detection unit described above includes a Hall element, a resistor R3 and a capacitor C3. After the resistor R3 and the capacitor C3 are connected in series, the two ends are respectively connected to the power supply Vcc and ground, and the 2 pins and 3 pins of the Hall element are respectively connected to the across the capacitor C3.

The above-mentioned first bundle winding and the second bundle winding are wound on the same tooth of the stator core, and the winding directions are opposite.

The above-mentioned first winding and the second winding are wound on different teeth of the stator core.

The above-mentioned common end of the first bundle winding and the second bundle winding is also connected to one end of the capacitor C, and the other end of the capacitor C is grounded.

Compared with the prior art, the utility model has the beneficial effects that: 1) the logic control unit includes a triode switch circuit and a resistor R2, the circuit structure is simpler and more stable, and the production cost is reduced; 2) the driving circuit unit is composed of a power tube Q2, a power Tube Q3 constitutes, further simplifies circuit structure, reduces production cost; 3) drive circuit unit also includes capacitor C1 and capacitor C2, connects capacitor C1 between the base of power tube Q2 and ground, connects capacitor C1 between the base of power tube Q3 and ground Capacitor C2 is connected between them to control the conduction and dead time of power tube Q2 and power tube Q3 to ensure more stable operation; 4) The stator winding includes the first winding and the second winding, and it is more convenient and simple to drive the motor; 5) There are two winding methods for the stator winding: the first winding and the second winding are wound on the same teeth of the stator core and the winding directions are opposite or the first winding and the second winding are wound on the stator core On different teeth, the winding is more convenient and flexible, and the production efficiency is improved.

Description of drawings:

Fig. 1 is a block diagram of the electric principle of the utility model.

FIG. 2 is a circuit diagram corresponding to FIG. 1 .

Fig. 3 is a schematic diagram of a winding method of the stator winding of the utility model.

Fig. 4 is a schematic diagram of the second winding method of the stator winding of the present invention.

Fig. 5 is a schematic diagram of the second winding method of the stator winding of the present invention.

Detailed ways:

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, a single-phase brushless motor controller of the present invention includes a Hall element detection unit 1, a logic control unit 2, a drive circuit unit 3 and stator windings, and a Hall element detection unit 1 The rotor position signal is detected by the Hall element and output to the logic control unit 2. The logic control unit 2 judges the signal and then outputs it to the drive circuit unit 3. The drive circuit unit 3 controls the power on and off of the stator winding. The logic control unit 2 includes a triode switch circuit and Resistor R2, the signal output terminal 11 of the Hall element detection unit 1 is connected to one end of the resistor R2, and the other end of the resistor R2 is used as an output terminal 21 of the logic control unit 2, and the signal output terminal 11 of the Hall element detection unit 1 is also connected to the triode switch The input terminal of the circuit and the output terminal of the triode switch circuit are used as an output terminal 22 of the logic control unit 2, and the output terminals 21 and 22 of the logic control unit 2 form a high-low level interlocking relationship. Composed of transistor Q1 and resistors R1, R4, and R5, the collector of transistor Q1 is connected to the power supply Vcc, the emitter of transistor Q1 is connected to resistor R5 and then grounded; the base of transistor Q1 is output through resistor R1 and the signal of Hall element detection unit 1 Terminal connection, directly drawn from the emitter of the triode Q1 as an output terminal 22 of the logic control unit 2, the drive circuit unit 3 includes a power tube Q2, a power tube Q3, and the stator winding includes a first winding 4 and a second winding 5 , the first winding 4 and the second winding 5 have a common end and are connected to the power supply Vbus, the first winding 4 and the second winding 5 are respectively connected to the collectors of the power transistor Q2 and the power transistor Q3, and the power transistor Q2 , the emitter of the power tube Q3 is grounded, the bases of the power tube Q2 and the power tube Q3 are respectively connected to the output terminals 21 and 22 of the logic control unit 2, and the drive circuit unit 3 also includes a capacitor C1 and a capacitor C2, and the power tube Q2 The capacitor C1 is connected between the base and the ground, and the capacitor C2 is connected between the base of the power transistor Q3 and the ground. The Hall element detection unit 1 includes a Hall element, a resistor R3, and a capacitor C3. The two ends of the resistor R3 and the capacitor C3 are connected in series. Connect the power supply Vcc and ground respectively, and the 2 pins and 3 pins of the Hall element are respectively connected to the two ends of the capacitor C3. The common end of the first winding 4 and the second winding 5 is also connected to one end of the capacitor C, the other end of the capacitor C is grounded, and the function of the capacitor C is discharge.

As shown in Figure 3, the first winding 4 and the second winding 5 are wound on the same teeth of the stator core 6 and the winding directions are opposite; as shown in Figure 4 and Figure 5, the first winding 4 and the second The two windings 5 are wound on different teeth of the stator core 6 .

The working principle of the present utility model is: as shown in Figure 2, the Hall element detection unit 1 detects the rotor position signal through the Hall element and outputs it to the logic control unit 2, when the signal output terminal 11 of the Hall element detection unit 1 is low level, the power tube Q3 is not conducting, and the second winding 5 is powered off; at the same time, the triode Q1 in the triode switch circuit is conducting, and the emitter of the triode Q1 outputs a high level to drive the power tube Q2 to conduct. A bundle of windings 4 is energized to work; when the signal output terminal 11 of the Hall element detection unit 1 is at a high level, the power transistor Q3 is turned on, and the second bundle of windings 5 is energized; at the same time, the transistor Q1 in the transistor switch circuit does not conduct On, the emitter of the triode Q1 outputs a low level, the power transistor Q2 is cut off, and the first winding 4 is powered off. From the above, it can be seen that the output terminals 21 and 22 of the logic control unit 2 form a high-low level interlocking relationship. In addition, capacitor C1 is connected between the base of power tube Q2 and ground, and capacitor C2 is connected between the base of power tube Q3 and ground, so that power tube Q2 and power tube Q3 cannot be turned on at the same time, and the dead time is set. Ensure stable and reliable work.

Claims (8)

1. brushless single phase electric machine controller, comprise Hall element detecting unit (1), logic control element (2), drive circuit unit (3) and stator winding, Hall element detecting unit (1) is by Hall element detection rotor position signalling and output to logic control element (2), logic control element (2) outputs to drive circuit unit (3) after judging signal, drive circuit unit (3) control stator winding power on/off, it is characterized in that: logic control element (2) comprises transistor switching circuit and resistance R 2, the signal output part (11) of Hall element detecting unit (1) connects resistance R 2 one ends, the other end of resistance R 2 is as an output (21) of logic control element (2), the signal output part (11) of Hall element detecting unit (1) also connects the input of transistor switching circuit, the output of transistor switching circuit is as an output (22) of logic control element (2), the output (21 of logic control element (2), 22) interlocked relationship of formation high-low level.

2. a kind of brushless single phase electric machine controller according to claim 1, it is characterized in that: transistor switching circuit comprises that triode Q1 and resistance R 1, R4, R5 form, the collector electrode of triode Q1 is connected with power Vcc, and the emitter of triode Q1 connects resistance R 5 back ground connection; The base stage of triode Q1 is connected with the signal output part of Hall element detecting unit (1) by resistance R 1, directly draws a output (22) as logic control element (2) from the emitter of triode Q1.

3. a kind of brushless single phase electric machine controller according to claim 1 and 2, it is characterized in that: drive circuit unit (3) comprises power tube Q2, power tube Q3, stator winding comprises that first pricks the winding (4) and the second bundle winding (5), the first bundle winding (4) and second is pricked winding (5) and is had a common port and be connected power supply Vbus, first prick winding (4) and the second bundle winding (5) respectively with power tube Q2, the collector electrode of power tube Q3 connects, power tube Q2, the grounded emitter of power tube Q3, power tube Q2, the base stage of power tube Q 3 respectively with the output (21 of logic control element (2), 22) connect.

4. a kind of brushless single phase electric machine controller according to claim 3, it is characterized in that: drive circuit unit (3) also comprises capacitor C 1 and capacitor C 2, between power tube Q2 base stage and ground, be connected capacitor C 1, between power tube Q3 base stage and ground, be connected capacitor C 2.

5. a kind of brushless single phase electric machine controller according to claim 4, it is characterized in that: Hall element detecting unit (1) comprises Hall element, resistance R 3 and capacitor C 3, resistance R 3 is connected power Vcc and ground connection respectively with two ends, capacitor C 3 series connection back, and 2 pins of Hall element and 3 pins are connected to the two ends of capacitor C 3.

6. a kind of brushless single phase electric machine controller according to claim 3 is characterized in that: first prick winding (4) and the second bundle winding (5) on the identical tooth of stator core and direction of winding opposite.

7. a kind of brushless single phase electric machine controller according to claim 3 is characterized in that: first pricks winding (4) and second pricks winding (5) on the different tooth of stator core.

8. a kind of brushless single phase electric machine controller according to claim 3 is characterized in that: first common port of pricking the winding (4) and the second bundle winding (5) also is connected an end of capacitor C, the other end ground connection of capacitor C.

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