CN215897622U - Three-in-one non-inductive brushless motor driving circuit of fascia gun - Google Patents
Three-in-one non-inductive brushless motor driving circuit of fascia gun Download PDFInfo
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- CN215897622U CN215897622U CN202122331329.4U CN202122331329U CN215897622U CN 215897622 U CN215897622 U CN 215897622U CN 202122331329 U CN202122331329 U CN 202122331329U CN 215897622 U CN215897622 U CN 215897622U
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Abstract
The utility model provides a three-in-one non-inductive brushless motor driving circuit of a fascia gun, which comprises: the three phase lines of the motor are respectively connected with the U end, the V end and the W end of the three-phase bridge circuit; the positive end of the three-phase bridge circuit is connected with the positive electrode BAT of the battery, and the negative end of the three-phase bridge circuit is connected with the resistor R1; the negative electrode of the battery is grounded at a GND terminal; the positive power end of the adapter power circuit is connected with the diode D1, and the negative power end of the adapter power circuit is connected with the negative electrode of the battery; the three-phase bridge driving circuit is connected with the three-phase bridge circuit; and the MCU circuit is electrically connected with the three-phase bridge circuit, the three-phase bridge driving circuit and the control display circuit. The utility model solves the problems that the number of components is increased, the cost is increased and the volume of a circuit board is increased and the design difficulty is increased due to the need of a special power management chip, an energy storage inductor, a power switch device and the like in the prior art.
Description
Technical Field
The utility model relates to the technical field of motor driving, in particular to a three-in-one non-inductive brushless motor driving circuit of a fascia gun.
Background
The fascia gun is used as a massage health-care product and mainly comprises an electronic circuit unit, such as a motor power driving system, a battery power supply management system, a human-computer interaction operation control unit and the like.
Because the fascial gun is a portable product powered by a battery, the battery used by the fascial gun is generally a 2S-6S battery pack, and the charger is configured with a 5V adapter power supply, a power supply charging module on a circuit board needs to charge the battery in a boosting mode, and then the battery charging management is realized by matching with measures such as constant current, protection and the like, the boosting usually adopts a classical boost scheme, but the boost circuit scheme needs a special power supply management chip, an energy storage inductor, a power switch device and a reverse cut-off diode.
Among the prior art, managment rifle trinity noninductive brushless motor driven power boost charge management adopts independent whole set of boost dedicated circuit, adopts special power management chip promptly, need increase to step up with energy storage inductance and power device etc. causes electronic components quantity to increase, and product cost increases, and circuit board volume and design degree of difficulty all have higher requirements.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, a three-in-one non-inductive brushless motor driving circuit of a fascia gun is provided so as to solve the problems that the number of electronic components is increased, the product cost is increased, and the volume of a circuit board and the design difficulty are higher in the prior art because a special power management chip, an energy storage inductor, a power switch device and a reverse cut-off diode are needed.
In order to achieve the above object, a three-in-one non-inductive brushless motor driving circuit for a fascia gun is provided, which comprises:
the three phase lines of the motor are respectively connected with the U end, the V end and the W end of the three-phase bridge circuit;
the positive end of the three-phase bridge circuit is connected with the positive electrode BAT of the battery, and the negative end of the three-phase bridge circuit is connected with the resistor R1;
the negative electrode of the battery is grounded at a GND terminal;
the positive power end of the adapter power circuit is connected with the diode D1, and the negative power end of the adapter power circuit is connected with the negative electrode of the battery;
the three-phase bridge driving circuit is connected with the three-phase bridge circuit;
and the MCU circuit is electrically connected with the three-phase bridge circuit, the three-phase bridge driving circuit and the control display circuit.
Further, the three-phase bridge circuit comprises six power switch tubes Q1, Q2, Q3, Q4, Q5 and Q6, wherein the power switch tube Q1 is connected with the power switch tube Q4 in series to form a U end, the power switch tube Q2 is connected with the power switch tube Q5 in series to form a V end, and the power switch tube Q3 is connected with the power switch tube Q6 in series to form a W end.
Further, the three-phase bridge circuit is connected with the negative electrode of the battery through a resistor R1.
Further, the adapter power circuit is connected to the three-phase bridge circuit through a diode D1, and the conduction direction of the diode D1 is from the adapter power circuit to the three-phase bridge circuit.
Furthermore, the adapter power supply circuit comprises a voltage stabilizing chip U1 and a peripheral circuit, wherein a pin 1 of the voltage stabilizing chip U1 is connected with +5V, a pin 3 of the voltage stabilizing chip U1 is connected with a GND terminal, a capacitor C1 is connected between the pin 1 and the pin 3, and a capacitor C2 is connected between the pin 3 and the pin 2.
Furthermore, the output end of the three-phase bridge driving circuit is connected with six wires WH, WL, UH, UL, VH and VL, and the wires WH, WL, UH, UL, VH and VL correspond to the power switching tubes Q3, Q6, Q1, Q4, Q2 and Q5 in a one-to-one mode.
Further, the MCU circuit comprises a chip U5 and a peripheral circuit, and the control display circuit comprises a key for inputting and an LED lamp for displaying.
The fascia gun three-in-one non-inductive brushless motor driving circuit has the advantages that partial power switch tubes in the three-phase bridge circuit are reused as power switch devices in a boost scheme, parasitic diodes in the three-phase bridge circuit are reused as boost cut-off diodes in the boost scheme, the motor is connected with a bridge arm of the three-phase bridge circuit, partial winding coils of the motor are reused as power energy storage inductors in the boost scheme, the MCU circuit on the circuit board is correspondingly adjusted, a special power management chip is removed, the power inductors are removed, and the boost power tubes are removed, so that the product cost is greatly saved under the condition of the same performance, and the area of the hardware circuit board and the difficulty in designing the hardware are reduced.
Drawings
FIG. 1 is a circuit schematic of an embodiment of the present invention;
fig. 2 is a schematic circuit diagram according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a motor; 2. a three-phase bridge circuit; 3. a battery; 4. an adapter power supply circuit; 5. a three-phase bridge drive circuit; 6. an MCU circuit; 7. controls the display circuit.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a three-in-one non-inductive brushless motor driving circuit for a fascial gun, comprising: motor 1, three-phase bridge circuit 2, battery 3, adapter power supply circuit 4, three-phase bridge drive circuit 5 and MCU circuit 6.
Specifically, three phase lines of the motor 1 are respectively connected with a U end, a V end and a W end of the three-phase bridge circuit 2;
the positive end of the three-phase bridge circuit 2 is connected with the positive electrode BAT of the battery 3, and the negative end of the three-phase bridge circuit 2 is connected with the resistor R1;
a battery 3, wherein the negative electrode of the battery 3 is grounded at a GND end;
the positive power supply end of the adapter power supply circuit 4 is connected with the diode D1, and the negative power supply end of the adapter power supply circuit 4 is connected with the negative electrode of the battery 3;
the three-phase bridge driving circuit 5 is connected with the three-phase bridge circuit 2;
MCU circuit 6, MCU circuit 6 electric connection three-phase bridge circuit 2, three-phase bridge drive circuit 5 and control display circuit 7.
When using this trinity noninductive brushless motor drive circuit of manadesma rifle, when the product during operation, MCU circuit 6 control three-phase bridge circuit 2 normally works: when the adapter power circuit 4 is connected with a 5V voltage, the charging current passes through the cut-off diode D1, the other end of the diode D1 is connected with the W end of the three-phase bridge circuit 2, the MCU circuit 6 controls the power switch tubes Q3 and Q6 to be closed through the three-phase bridge driving circuit 5, and at the moment, the current flows through the W phase line; then the MCU circuit 6 controls the power switch tubes Q1 and Q4 to be closed, so that current flows out through the V-phase line; the motor 1 is connected with windings at the W end and the V end to form an energy storage power inductor; the MCU circuit 6 controls the power switch Q2 to turn off, and the MCU circuit 6 controls the power switch Q5 to control the PWM switch, where the power switch Q5 switches the transistor as a BOOST power switch, and current flows through the parasitic diode of Q2 to charge the battery 3 via the positive terminal of the battery 3.
When the circuit is in the charging state, in the present embodiment, the MCU circuit 6 turns off the power switching tubes Q1, Q2, Q3, Q4, and Q6 by controlling the wires WH, WL, UH, UL, and VH, and the MCU circuit 6 turns off the power switching tube Q5 as a power switch of the booster circuit by controlling the PWM output of the wire VL.
In the present embodiment, as shown in fig. 1 and 2, the three-phase bridge circuit 2 includes six power switch transistors Q1, Q2, Q3, Q4, Q5 and Q6, the power switch transistor Q1 is connected in series with the power switch transistor Q4 to form a U terminal, the power switch transistor Q2 is connected in series with the power switch transistor Q5 to form a V terminal, the power switch transistor Q3 is connected in series with the power switch transistor Q6 to form a W terminal, and the U terminal, the V terminal and the W terminal are connected to the motor 1 as a A, B, C three-phase line.
In the present embodiment, as shown in fig. 1, the three-phase bridge circuit 2 is connected to the negative electrode of the battery 3 through a resistor R1, and the resistor R1 is a sampling resistor for detecting a passing current.
In the present embodiment, as shown in fig. 1 and fig. 2, the adapter power supply circuit 4 is connected to the three-phase bridge circuit 2 through the diode D1, the conduction direction of the diode D1 is from the adapter power supply circuit 4 to the three-phase bridge circuit 2, and the diode D1 has a unidirectional conduction property, so that the current inversion is avoided, and the normal operation of the charging function is ensured.
In this embodiment, as shown in fig. 1 and fig. 2, the adapter power supply circuit 4 includes a voltage regulator chip U1 and peripheral circuits, the pin 1 of the voltage regulator chip U1 is connected to +5V, the pin 3 of the voltage regulator chip U1 is connected to the GND terminal, a capacitor C1 is connected between the pin 1 and the pin 3, a capacitor C2 is connected between the pin 3 and the pin 2, and the model of the voltage regulator chip U1 is 7550.
In this embodiment, as shown in fig. 1 and fig. 2, the output end of the three-phase bridge driving circuit 5 is connected to six wires WH, WL, UH, UL, VH, and VL, and the wires WH, WL, UH, UL, VH, and VL correspond to the power switching tubes Q3, Q6, Q1, Q4, Q2, and Q5 one-to-one, so as to control the turning on and off of the power switching tubes, and the power switching tubes are not only used for driving the motor 1 to rotate, but also can be multiplexed as power switching devices in a boosting scheme, thereby reducing the use of electronic components, and achieving the effect of reducing the production cost.
In this embodiment, as shown in fig. 1 and fig. 2, the MCU circuit 6 includes a chip U5 and a peripheral circuit, the control display circuit 7 includes a key for input and an LED lamp for display, the model of the chip U5 is NY8BM72A, the MCU circuit 6 is a core circuit on a circuit board, and the MCU circuit 6 is adjusted to have a charging management effect, thereby avoiding the separate use of a dedicated power management chip.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A three-in-one non-inductive brushless motor driving circuit of a fascia gun is characterized by comprising:
the three phase lines of the motor (1) are respectively connected with the U end, the V end and the W end of the three-phase bridge circuit (2);
the positive end of the three-phase bridge circuit (2) is connected with the positive electrode BAT of the battery (3), and the negative end of the three-phase bridge circuit (2) is connected with the resistor R1;
a battery (3), wherein the negative electrode of the battery (3) is grounded to a GND terminal;
the positive power supply end of the adapter power supply circuit (4) is connected with a diode D1, and the negative power supply end of the adapter power supply circuit (4) is connected with the negative electrode of the battery (3);
a three-phase bridge drive circuit (5), the three-phase bridge drive circuit (5) being connected to the three-phase bridge circuit (2);
the driving circuit comprises an MCU circuit (6), wherein the MCU circuit (6) is electrically connected with a three-phase bridge circuit (2), a three-phase bridge driving circuit (5) and a control display circuit (7).
2. The fascia gun three-in-one brushless motor driving circuit as claimed in claim 1, wherein the three-phase bridge circuit (2) comprises six power switching tubes Q1, Q2, Q3, Q4, Q5 and Q6, the power switching tube Q1 is connected in series with the power switching tube Q4 to form a U terminal, the power switching tube Q2 is connected in series with the power switching tube Q5 to form a V terminal, and the power switching tube Q3 is connected in series with the power switching tube Q6 to form a W terminal.
3. The three-in-one non-inductive brushless motor driving circuit of the fascia gun as claimed in claim 2, wherein the three-phase bridge circuit (2) is connected to the negative electrode of the battery (3) through a resistor R1.
4. The three-in-one non-inductive brushless motor driving circuit of the fascial gun as claimed in claim 1, wherein the adapter power circuit (4) is connected to the three-phase bridge circuit (2) through a diode D1, and the conduction direction of the diode D1 is from the adapter power circuit (4) to the three-phase bridge circuit (2).
5. The three-in-one non-inductive brushless motor driving circuit of the fascia gun according to claim 4, wherein the adapter power circuit (4) comprises a voltage stabilizing chip U1 and peripheral circuits, wherein +5V is connected to pin 1 of the voltage stabilizing chip U1, a GND terminal is connected to pin 3 of the voltage stabilizing chip U1, a capacitor C1 is connected between pin 1 and pin 3, and a capacitor C2 is connected between pin 3 and pin 2.
6. The fascia gun three-in-one non-inductive brushless motor driving circuit as claimed in claim 1, wherein the output end of the three-phase bridge driving circuit (5) is connected with six wires WH, WL, UH, UL, VH and VL, and the wires WH, WL, UH, UL, VH and VL are in one-to-one correspondence with power switch tubes Q3, Q6, Q1, Q4, Q2 and Q5.
7. The fascia gun three-in-one non-inductive brushless motor driving circuit as claimed in claim 1, wherein the MCU circuit (6) comprises a chip U5 and peripheral circuits, and the control display circuit (7) comprises keys for input and LED lamps for display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122331329.4U CN215897622U (en) | 2021-09-18 | 2021-09-18 | Three-in-one non-inductive brushless motor driving circuit of fascia gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122331329.4U CN215897622U (en) | 2021-09-18 | 2021-09-18 | Three-in-one non-inductive brushless motor driving circuit of fascia gun |
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| Publication Number | Publication Date |
|---|---|
| CN215897622U true CN215897622U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122331329.4U Active CN215897622U (en) | 2021-09-18 | 2021-09-18 | Three-in-one non-inductive brushless motor driving circuit of fascia gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215897622U (en) |
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2021
- 2021-09-18 CN CN202122331329.4U patent/CN215897622U/en active Active
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