CN209767419U - Low-cost control circuit of brushless DC motor - Google Patents
Low-cost control circuit of brushless DC motor Download PDFInfo
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- CN209767419U CN209767419U CN201821352469.1U CN201821352469U CN209767419U CN 209767419 U CN209767419 U CN 209767419U CN 201821352469 U CN201821352469 U CN 201821352469U CN 209767419 U CN209767419 U CN 209767419U
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Abstract
The utility model relates to the technical field of direct current brushless motors, in particular to a low-cost control circuit of a direct current brushless motor, which comprises a core processing circuit, an input detection circuit, a driving circuit, a temperature detection circuit, a current detection circuit and a voltage detection circuit, wherein the input detection circuit, the driving circuit, the temperature detection circuit, the current detection circuit and the voltage detection circuit are connected with the core processing circuit; the current detection circuit is also connected between the voltage detection circuit and the driving circuit, and the direct current brushless motor M is connected between the driving circuit and the voltage detection circuit; the direct current brushless motor M is a single-phase BLDC brushless motor M, and an electric winding is arranged inside the direct current brushless motor M. The utility model discloses a simplify the design of each functional module to reduce cost's purpose has been reached.
Description
Technical Field
The utility model relates to a direct current brushless motor technical field especially relates to a direct current brushless motor's low-cost control circuit.
Background
Along with the expanding of the market demands of portable mobile electric tools, portable mobile dust collectors, sweeping robots and the like, the functions of products are more and more abundant, Brushless Direct Current motors (BLDCM or BLDC for short) are more and more extensive in the application fields of portable mobile electric tools, portable mobile dust collectors, sweeping robots and the like, and because the Brushless Direct Current motors overcome the congenital defects of brushed Direct Current motors and replace mechanical commutators with electronic commutators, the Brushless Direct Current motors not only have the characteristics of good speed regulation performance of the Direct Current motors, but also have the advantages of simple alternating Current Motor structures, no commutating sparks, reliable operation, easy maintenance and the like.
the mainstream in the market at present adopts three-phase BLDC brushless motor, and three-phase BLDC brushless motor self mechanical structure is complicated, and electric coil winding three-phase, motor control panel with it matching need design three-phase control equally, leads to three-phase BLDC brushless control circuit scheme complicacy, and is with high costs.
Disclosure of Invention
The utility model provides a brushless DC motor's low-cost control circuit, the technical problem of solution is, current brushless DC motor M mechanical structure itself is complicated, and its noninductive control circuit cooperation three-phase motor structure need realize three-phase control, and the circuit is complicated, and the device is with high costs.
In order to solve the technical problem, the utility model provides a low-cost control circuit of a brushless DC motor, which comprises a core processing circuit, an input detection circuit, a driving circuit, a temperature detection circuit, a current detection circuit and a voltage detection circuit, wherein the input detection circuit, the driving circuit, the temperature detection circuit, the current detection circuit and the voltage detection circuit are connected with the core processing circuit;
the current detection circuit is also connected between the voltage detection circuit and the driving circuit, and the direct current brushless motor M is connected between the driving circuit and the voltage detection circuit; the direct current brushless motor M is a single-phase BLDC brushless motor M, and an electric winding is arranged inside the direct current brushless motor M;
the input detection circuit is used for inputting the detected position signal and the detected control trigger signal of the DC brushless motor M into the core processing circuit;
the driving circuit is used for driving the direct current brushless motor M under the control of the core processing circuit;
The temperature detection circuit is used for sending the detected temperature of the whole circuit space to the core processing circuit;
The current detection circuit and the voltage detection circuit are respectively used for sending the working current and the working voltage of the motor to the core processing circuit;
And the core processing circuit is used for monitoring and controlling the circuit to be in a normal working state according to the position signal, the control trigger signal, the working current, the working voltage and the like of the motor.
preferably, the input detection circuit comprises a motor position detection input circuit and a key control signal input circuit which are connected with each other; the motor position detection input line is composed of a connector J2, resistors R5, R10 and a capacitor C9, and the position signal is provided by a position sensor in the DC brushless motor M; the key control signal input line consists of the connector J2, a resistor R16, a resistor R17, a resistor R18 and a transistor Q8 and is used for accessing a control trigger signal; the control trigger signal comprises a motor starting control signal, a stopping control signal, a speed regulating control signal, an alarm signal and a motor abnormity removing signal.
preferably, the temperature detection circuit is provided with a resistor R7, a resistor R68, a temperature sensor RT3 and a capacitor C13, and is used for detecting the temperature of the whole circuit space in real time.
Preferably, the current detection circuit is provided with a precision operational amplifier U4, a resistor R21, a resistor R23, a resistor R31, a resistor R40, a resistor R41, a resistor R45, a resistor R58, a resistor R94, a resistor R95, a resistor R110, a resistor R111, a resistor R112, a resistor R113, a capacitor C24, a capacitor C56, a capacitor C99, a capacitor C100, a capacitor C102, a capacitor C103, and a capacitor C105, and is configured to detect the operating current of the dc brushless motor M.
Preferably, the voltage detection line is composed of a precision operational amplifier U3, a resistor R1, a resistor R2, a resistor R19, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R69, a resistor R87, a resistor R89, a resistor R90, a resistor R92, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C54, a capacitor C98, and a diode D3, and is used for detecting the working voltage of the dc brushless motor M.
Preferably, the core processing line is composed of a connector J6, an MCU controller U2, a resistor R15, a resistor R39, a resistor R50, a resistor R51, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a resistor R56, a resistor R82, a resistor R4, a resistor R42, a resistor R43, a resistor R44, a resistor R46, a resistor R47, a resistor R48, a resistor R49, a resistor R83, a resistor R84, a resistor R86, a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C22, a capacitor C23, a capacitor C25, and a capacitor C31.
Preferably, the driving line consists of a motor driving line, a power supply filtering line and an MOS tube driving line; the motor driving line consists of a transistor Q1, a transistor Q2, a transistor Q3 and a transistor Q4; the power supply filtering circuit consists of capacitors C12 and C13; the MOS tube driving line is composed of a driving ICU5, a driving ICU6, a logic ICU7, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R20, a resistor R22, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R36, a resistor R37, a resistor R38, a capacitor C14, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a diode D4 and a diode D5.
Preferably, the transistors Q1, Q2, Q3 and Q4 are MOS field effect transistors, triacs or IGBTs.
Preferably, the power line routing connector J1, the power ICU1, the resistor R6, the resistor R8, the resistor R9, the capacitor C1, the capacitor C2, the capacitor C3, the capacitor C4, the capacitor C7, the capacitor C10, the capacitor C11, the capacitor C26, the capacitor C27, the transistor Q5, and the diode D1.
preferably, the transistor Q5 is an NPN transistor, a PNP transistor, or a MOS field effect transistor.
the utility model provides a pair of brushless DC motor's low-cost control circuit establishes the single-phase BLDC brushless motor of an electric winding in adopting, and the motor drive control panel only needs to realize a phase winding drive, has simplified the design of each functional module in the circuit design to reached reduce cost's purpose, be applicable to application fields such as portable removal electric tool, portable removal dust catcher, the robot of sweeping the floor equally, wide application prospect has.
drawings
Fig. 1 is a circuit diagram of a low-cost control circuit of a dc brushless motor according to an embodiment of the present invention;
fig. 2 is an electrical connection diagram of the dc brushless motor (M) in the embodiment of fig. 1 provided by the present invention;
Fig. 3 is an electrical connection diagram of the input detection circuit 2 of the embodiment of fig. 1 provided by the present invention;
Fig. 4 is an electrical connection diagram of the temperature detection circuit 4 in the embodiment of fig. 1 provided by the present invention;
fig. 5 is an electrical connection diagram of the current detection circuit 5 in the embodiment of fig. 1 provided by the present invention;
Fig. 6 is an electrical connection diagram of the voltage detection circuit 6 in the embodiment of fig. 1 provided by the present invention;
fig. 7 is an electrical connection diagram of the drive circuit 3 of the embodiment of fig. 1 provided by the present invention;
Fig. 8 is an electrical connection diagram of the power supply circuit 7 in the embodiment of fig. 1 provided by the present invention.
Fig. 9 is an electrical connection diagram of the core processing circuit 1 in the embodiment of fig. 1 provided by the present invention;
Detailed Description
the following embodiments of the present invention will be specifically explained with reference to the accompanying drawings, which are given for illustrative purposes only and cannot be understood as limitations of the present invention, and the selection and value of components and devices and the accompanying drawings are only preferred embodiments, and are only used for reference and illustration, which do not limit the scope of the present invention, because many changes can be made to the present invention without departing from the spirit and scope of the present invention.
the embodiment of the utility model provides a low-cost control circuit of a direct current brushless motor, its circuit structure is shown in fig. 1, including core processing circuit 1 and input detection circuit 2, drive circuit 3, temperature detection circuit 4, current detection circuit 5, voltage detection circuit 6 connected with said core processing circuit 1, still be equipped with power supply line 7 for all above-mentioned circuit power supplies;
The current detection line 5 is also connected between the voltage detection line 6 and the driving line 3, and the direct current brushless motor M is connected between the driving line 3 and the voltage detection line 6;
the input detection circuit 2 inputs the detected position signal and the detected control trigger signal of the brushless DC motor M into the core processing circuit 1;
the driving circuit 3 drives the direct current brushless motor M under the control of the core processing circuit 1;
the temperature detection circuit transmits the detected temperature of the whole circuit space to the core processing circuit 1;
The current detection circuit 5 and the voltage detection circuit 6 respectively send the working current and the working voltage of the motor to the core processing circuit 1;
the core processing circuit 1 monitors and controls the circuit to be in a normal working state according to the position signal, the control trigger signal, the working current and the working voltage of the motor and the like, and has the functions of software algorithm automatic processing, circuit logic operation, data processing, data storage and the like.
the embodiment of the present invention provides a single-phase BLDC brushless motor M, which is internally provided with an electrical winding, see fig. 2, and is connected to a circuit.
As a preferred embodiment of the present invention, referring to fig. 3, the input detection circuit 2 includes a motor position detection input circuit and a key control signal input circuit that are connected to each other; the motor position detection input line is composed of a connector J2, resistors R5, R10 and a capacitor C9, and the position signal is provided by a position sensor in the DC brushless motor (M); the key control signal input line consists of the connector J2, a resistor R16, a resistor R17, a resistor R18 and a transistor Q8 and is used for accessing a control trigger signal; the control trigger signal includes but is not limited to a motor start control signal, a stop control signal, a speed regulation control signal, an alarm signal, a motor abnormity removing signal and the like. The connection relationship of the components can also be directly referred to in fig. 3, so that the connection relationship is not described in specific text in this embodiment.
Referring to fig. 4, the temperature detection circuit 4 is provided with a resistor R7, a resistor R86, a temperature sensor RT3, and a capacitor C13, and is used for detecting the temperature of the whole circuit space in real time. The connection relationship of the components can also be directly referred to in fig. 4, so that the connection relationship is not described in specific text in this embodiment.
Referring to fig. 5, the current detection circuit 5 is provided with a precision operational amplifier U4, a resistor R21, a resistor R23, a resistor R31, a resistor R40, a resistor R41, a resistor R45, a resistor R58, a resistor R94, a resistor R95, a resistor R110, a resistor R111, a resistor R112, a resistor R113, a capacitor C24, a capacitor C56, a capacitor C99, a capacitor C100, a capacitor C102, a capacitor C103, and a capacitor C105, and is configured to detect a working current of the dc brushless motor M. The connection relationship of the components can also be directly referred to in fig. 5, so the connection relationship is not described in specific text in this embodiment.
Referring to fig. 6, the voltage detection circuit 6 is composed of a precision operational amplifier U3, a resistor R1, a resistor R2, a resistor R19, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R69, a resistor R87, a resistor R89, a resistor R90, a resistor R92, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C54, a capacitor C98, and a diode D3, and is configured to detect a working voltage of the dc brushless motor M. The connection relationship of the components can also be directly referred to in fig. 6, so that the connection relationship is not described in specific text in this embodiment.
referring to fig. 9, the core processing circuit 1 includes a connector J6, an MCU controller U2, a resistor R15, a resistor R39, a resistor R50, a resistor R51, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a resistor R56, a resistor R82, a resistor R4, a resistor R42, a resistor R43, a resistor R44, a resistor R46, a resistor R47, a resistor R48, a resistor R49, a resistor R83, a resistor R84, a resistor R86, a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C22, a capacitor C23, a capacitor C25, and a capacitor C31. The connection relationship of the components can also be directly referred to in fig. 9, so that the connection relationship is not described in specific text in this embodiment.
Referring to fig. 7, the driving circuit 3 is composed of a motor driving circuit, a power filter circuit and a MOS transistor driving circuit; the motor driving line consists of a transistor Q1, a transistor Q2, a transistor Q3 and a transistor Q4; the power supply filtering circuit consists of capacitors C12 and C13; the MOS tube driving line is composed of a driving ICU5, a driving ICU6, a logic ICU7, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R20, a resistor R22, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R36, a resistor R37, a resistor R38, a capacitor C14, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a diode D4 and a diode D5. The transistors Q1, Q2, Q3 and Q4 are MOS field effect transistors, and may also be triacs or IGBTs in other application scenarios. The connection relationship of the components can also be directly referred to in fig. 7, so that the connection relationship is not described in specific text in this embodiment.
Referring to fig. 8, the power supply circuit 7 is composed of a connector J1, a power supply ICU1, a resistor R6, a resistor R8, a resistor R9, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C7, a capacitor C10, a capacitor C11, a capacitor C26, a capacitor C27, a transistor Q5, and a diode D1. The transistor Q5 is an NPN transistor, and in other application scenarios, may also be a PNP transistor or an MOS field effect transistor. The connection relationship of the components can also be directly referred to in fig. 8, so the connection relationship is not described in specific text in this embodiment.
In fig. 2 to 9, the same ports need to be connected together and soldered on the PCB, fig. 1 is a macro architecture of the circuit design, fig. 2 to 9 are a circuit principle of the circuit design, wherein T2, T5, etc. are all test ports. Of course, under the macro architecture of fig. 1, various circuits can be designed, and this embodiment is a preferred one. Fig. 2 to 9 of the present embodiment disclose various components and their connection relationships, and some adjustments and changes made to the circuit itself are all within the protection scope of the present invention as long as they are under the macro architecture of fig. 1.
The embodiment of the utility model provides a pair of DC brushless motor's low-cost control circuit establishes the single-phase BLDC brushless motor of an electric winding in adopting, and the motor drive control panel only needs to realize a phase winding drive, has simplified the design of each functional module on the circuit design to reach reduce cost's purpose, be applicable to application fields such as portable removal electric tool, portable removal dust catcher, the robot of sweeping the floor equally, wide application prospect has.
the above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (10)
1. A low-cost control circuit of a brushless DC motor is characterized by comprising a core processing circuit, an input detection circuit, a driving circuit, a temperature detection circuit, a current detection circuit, a voltage detection circuit and a power supply circuit, wherein the input detection circuit, the driving circuit, the temperature detection circuit, the current detection circuit and the voltage detection circuit are connected with the core processing circuit;
the current detection circuit is also connected between the voltage detection circuit and the driving circuit, and the direct current brushless motor M is connected between the driving circuit and the voltage detection circuit; the direct-current brushless motor M is a single-phase BLDC (brushless direct current) brushless motor M, and an electric winding is arranged inside the direct-current brushless motor M;
The input detection circuit is used for inputting the detected position signal and the detected control trigger signal of the DC brushless motor M into the core processing circuit;
The driving circuit is used for driving the direct current brushless motor M under the control of the core processing circuit;
The temperature detection circuit is used for sending the detected temperature of the whole circuit space to the core processing circuit;
The current detection circuit and the voltage detection circuit are respectively used for sending the working current and the working voltage of the motor to the core processing circuit;
and the core processing circuit is used for monitoring and controlling the circuit to be in a normal working state according to the position signal, the control trigger signal, the working current, the working voltage and the like of the motor.
2. A low-cost control circuit for a dc brushless motor as claimed in claim 1, wherein: the input detection circuit comprises a motor position detection input circuit and a key control signal input circuit which are connected with each other; the motor position detection input line is composed of a connector J2, resistors R5, R10 and a capacitor C9, and the position signal is provided by a position sensor in the DC brushless motor M; the key control signal input line consists of the connector J2, a resistor R16, a resistor R17, a resistor R18 and a transistor Q8 and is used for accessing a control trigger signal; the control trigger signal comprises a motor starting control signal, a stopping control signal, a speed regulating control signal, an alarm signal and a motor abnormity removing signal.
3. A low-cost control circuit for a dc brushless motor as claimed in claim 2, wherein: the temperature detection circuit is provided with a resistor R7, a resistor R68, a temperature sensor RT3 and a capacitor C13 and is used for detecting the temperature of the whole circuit space in real time.
4. A low-cost control circuit of a dc brushless motor as claimed in claim 3, wherein: the current detection circuit is provided with a precise operational amplifier U4, a resistor R21, a resistor R23, a resistor R31, a resistor R40, a resistor R41, a resistor R45, a resistor R58, a resistor R94, a resistor R95, a resistor R110, a resistor R111, a resistor R112, a resistor R113, a capacitor C24, a capacitor C56, a capacitor C99, a capacitor C100, a capacitor C102, a capacitor C103 and a capacitor C105, and is used for detecting the working current of the DC brushless motor M.
5. A low-cost control circuit of a dc brushless motor as claimed in claim 4, wherein: the voltage detection line consists of a precise operational amplifier U3, a resistor R1, a resistor R2, a resistor R19, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R69, a resistor R87, a resistor R89, a resistor R90, a resistor R92, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C54, a capacitor C98 and a diode D3 and is used for detecting the working voltage of the direct current brushless motor M.
6. A low-cost control circuit of a dc brushless motor as claimed in claim 5, wherein: the core processing line consists of a connector J6, an MCU controller U2, a resistor R15, a resistor R39, a resistor R50, a resistor R51, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a resistor R56, a resistor R82, a resistor R4, a resistor R42, a resistor R43, a resistor R44, a resistor R46, a resistor R47, a resistor R48, a resistor R49, a resistor R83, a resistor R84, a resistor R86, a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C22, a capacitor C23, a capacitor C25 and a capacitor C31.
7. A low-cost control circuit for a dc brushless motor as claimed in claim 6, wherein: the driving line consists of a motor driving line, a power supply filtering line and an MOS tube driving line; the motor driving line consists of a transistor Q1, a transistor Q2, a transistor Q3 and a transistor Q4; the power supply filtering circuit consists of capacitors C12 and C13; the MOS tube driving line is composed of a driving ICU5, a driving ICU6, a logic ICU7, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R20, a resistor R22, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R36, a resistor R37, a resistor R38, a capacitor C14, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a diode D4 and a diode D5.
8. A low-cost control circuit for a dc brushless motor as claimed in claim 7, wherein: the transistor Q1, the transistor Q2, the transistor Q3 and the transistor Q4 are MOS field effect transistors, triodes or IGBTs.
9. A low-cost control circuit for a dc brushless motor as claimed in claim 8, wherein: the power line routing connector J1, a power supply ICU1, a resistor R6, a resistor R8, a resistor R9, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C7, a capacitor C10, a capacitor C11, a capacitor C26, a capacitor C27, a transistor Q5 and a diode D1.
10. a low-cost control circuit for a dc brushless motor as claimed in claim 9, wherein: the transistor Q5 is an NPN triode, a PNP triode or an MOS field effect transistor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821352469.1U CN209767419U (en) | 2018-08-21 | 2018-08-21 | Low-cost control circuit of brushless DC motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821352469.1U CN209767419U (en) | 2018-08-21 | 2018-08-21 | Low-cost control circuit of brushless DC motor |
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| CN209767419U true CN209767419U (en) | 2019-12-10 |
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| CN201821352469.1U Active CN209767419U (en) | 2018-08-21 | 2018-08-21 | Low-cost control circuit of brushless DC motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964534A (en) * | 2018-08-21 | 2018-12-07 | 惠州市蓝微电子有限公司 | A kind of noninductive control circuit of DC brushless motor |
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2018
- 2018-08-21 CN CN201821352469.1U patent/CN209767419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964534A (en) * | 2018-08-21 | 2018-12-07 | 惠州市蓝微电子有限公司 | A kind of noninductive control circuit of DC brushless motor |
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