Drive board circuit based on brushless control system

Abstract

The utility model discloses a drive board circuit based on a brushless control system, which comprises a power supply conversion module, a main control chip, a communication interface, a rotating speed detection module, a current detection module, a gate drive module, a temperature monitoring module and a voltage monitoring module, the power supply conversion module is connected with the main control chip, the main control chip is connected with the communication interface, and the rotating speed detection module is connected with the communication interface. The rotating speed detection module, the current monitoring module, the grid driving module, the temperature monitoring module, the voltage monitoring module, the power supply conversion module, the grid driving module, the grid driving module, the grid driving module, the grid driving module, the grid driving module, the grid driving module, the grid driving module, the grid driving module and the grid driving module are connected with the main control chip. The driving board circuit can be more comprehensive in function, high in integration level, accurate in control, remarkably enhanced in performance, wide in application range and beneficial to market popularization.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic circuits, and in particular to the technical field of a drive board circuit based on a brushless control system. Background Technology

[0002] With the rapid development of science and technology, the requirements and standards for the control of electromechanical equipment in all industries and departments are constantly improving. In order to facilitate people to use electromechanical equipment better, more precise control of the equipment is required through drive board circuits. With the continuous development of technology, people's requirements for motor drive board circuits are also getting higher and higher. Existing drive board circuits have simple functions, poor integration, poor performance, and poor control precision, which is not conducive to promotion and application. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art and propose a drive board circuit based on a brushless control system, which can make the drive board circuit more comprehensive in function, highly integrated, precise in control, significantly enhanced in performance, widely applicable, and conducive to market promotion.

[0004] To achieve the above objectives, this utility model proposes a brushless control system driver board circuit, including a power conversion module, a main control chip, a communication interface, a speed detection module, a current detection module, a gate drive module, a temperature monitoring module, and a voltage monitoring module. The power conversion module is connected to the main control chip, the main control chip is connected to the communication interface, the speed detection module is connected to the main control chip, the current monitoring module is connected to the main control chip, the gate drive module is connected to the main control chip, the temperature monitoring module is connected to the main control chip, the voltage monitoring module is connected to the main control chip, and the power conversion module is connected to the gate drive module.

[0005] Preferably, the speed detection module includes resistors R24, R25, and R26, capacitors C25, C26, and C27, and connector P6. One end of resistor R24 ​​is connected to capacitor C25 and Hall phase A of connector P6, and one end of capacitor C25 is grounded. One end of resistor R25 is connected to capacitor C26 and Hall phase B of connector P6, and one end of capacitor C26 is grounded. One end of resistor R26 is connected to capacitor C27 and Hall phase C of connector P6, and one end of capacitor C27 is grounded. One end of resistors R24, R25, and R26 is connected in parallel to a 3.3V power supply.

[0006] Preferably, the current detection module includes resistors R22 and R23, capacitors C24, R27, R28, and R29, an integrated chip U5A, capacitors C28, C29, and C30. One end of resistor R22 is grounded. One end of resistor R23 is connected to resistor R22. One end of resistor R22 is connected to capacitors C24 and C28. One end of capacitors C24 and C28 is connected in parallel to integrated chip U5A. One end of capacitor C24 is grounded. One end of capacitor C28 is grounded. Integrated chip U5A is connected to resistors R28 and R27. One end of resistor R28 is grounded. Resistor R27 is connected in parallel with one end of integrated chip U5A and then connected to resistor R29. One end of resistor R29 is connected to capacitor C29. One end of capacitor C29 is grounded. Capacitor C30 is connected in parallel with one end of integrated chip U5A and then connected to a 3.3V power supply. One end of capacitor C30 is grounded.

[0007] Preferably, the gate driving module includes an integrated chip U2, capacitor C17, polarized capacitors C21, C22, and C23, diode D1, capacitor C18, resistors R16 and R17, MOSFETs Q1 and Q2, a motor interface PMA_A, diode D2, capacitor C19, resistors R18 and R19, MOSFETs Q3 and Q4, a motor interface PMB_A, diode D5, capacitor C20, resistors R20 and R21, MOSFETs Q5 and Q6, and a motor interface PMC_A. The capacitor C17 and... Integrated chip U2 is connected in parallel. One end of capacitor C17 is connected to a 12V power supply. One end of diode D1 is connected to capacitor C18. One end of capacitor C18 is connected to the emitter of MOSFET Q1 and the collector of MOSFET Q2. Capacitor C18 is connected in parallel with integrated chip U2. Resistor R16 is connected in series with integrated chip U2 and the base of MOSFET Q1. Resistor R17 is connected in series with integrated chip U2 and the base of MOSFET Q2. One end of diode D1 is connected to a 12V power supply. The collector of MOSFET Q1 is connected to a 24V power supply. One end of polarized capacitor C21 is connected to the collector of MOSFET Q1. The motor interface... PMA_A connects to the collector of MOSFET Q2. One end of diode D2 is connected to capacitor C19. One end of capacitor C19 is connected to the emitter of MOSFET Q3 and the collector of MOSFET Q4. Capacitor C19 is connected in parallel with integrated circuit U2. Resistor R18 is connected in series with integrated circuit U2 and the base of MOSFET Q3. Resistor R19 is connected in series with integrated circuit U2 and the base of MOSFET Q4. One end of diode D2 is connected to a 12V power supply. The collector of MOSFET Q3 is connected to a 24V power supply. One end of polarized capacitor C22 is connected to the collector of MOSFET Q3. The motor interface PMB_A connects to the collector of MOSFET Q3. The collector of transistor Q4 is connected to the diode D5. One end of the diode D5 is connected to capacitor C20. One end of capacitor C20 is connected to the emitter of transistor Q5 and the collector of transistor Q6. Capacitor C20 is connected in parallel with integrated chip U2. Resistor R20 is connected in series with integrated chip U2 and the base of transistor Q5. Resistor R21 is connected in series with integrated chip U2 and the base of transistor Q6. One end of diode D5 is connected to a 12V power supply. The collector of transistor Q5 is connected to a 24V power supply. One end of polarized capacitor C23 is connected to the collector of transistor Q5. The motor interface PMB_A is connected to the collector of transistor Q6.

[0008] The beneficial effects of this utility model are as follows: This utility model combines a power conversion module, a main control chip, a communication interface, a speed detection module, a current detection module, a gate drive module, a temperature monitoring module, and a voltage monitoring module. The program runs on the U1 main control chip. The power conversion module converts the input 24V power into 12V power after passing through integrated circuit U3 and peripheral components, powering the gate drive module. The power conversion module also converts the 12V power into 3.3V power after passing through integrated circuit U4 and peripheral components, powering other modules. The speed detection module consists of a three-channel Hall effect detection circuit, which detects the position of the brushless motor core and transmits the information to the main chip U1. The main chip U1 receives the motor control signal through the communication interface and, combined with the position information fed back by the speed detection module, sends a PWM control signal to the gate drive module. After receiving the PWM control signal from the main chip, the gate drive module processes it through integrated chip U2, controlling the bridge A composed of MOSFETs Q1 and Q2, the bridge A bootstrap circuit composed of diode D1 and capacitor C18, and the bridge B composed of MOSFETs Q3 and Q4. Diode D2 and capacitor C19 form a bridge B bootstrap circuit, MOSFETs Q5 and Q6 form a bridge C bootstrap circuit, and diode D5 and capacitor C20 form a bridge C bootstrap circuit. These three pairs of bridge circuits cyclically conduct according to a set pattern, enabling the brushless motor to rotate forward, reverse, accelerate, and decelerate. The current detection module filters the received current and voltage through capacitors C24 and C28, then amplifies it via integrated chip U5A and peripheral circuitry before transmitting it to the main chip U1. The temperature monitoring module transmits temperature information to the main chip U1 after voltage division by resistors R9 and R10 and filtering by capacitor C13. The voltage monitoring module sends voltage information to the main chip U1 after voltage division by resistors R4 and R5, current shunting by resistor R6, and filtering by capacitor C7. The main chip U1 integrates voltage, current, temperature, and speed information to comprehensively control the motor. When the motor experiences high temperature, high current, or speed control issues, it promptly reduces the speed or stops operation and issues an alarm. This comprehensive approach enhances the functionality and performance of the driver board circuit, stabilizes the driving effect, and provides comprehensive protection measures, facilitating market promotion.

[0009] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of a drive board circuit based on a brushless control system according to this utility model;

[0011] Figure 2 This is a schematic diagram of the main control chip structure based on the drive board circuit of a brushless control system according to this utility model;

[0012] Figure 3 This is a schematic diagram of a power conversion module structure based on a brushless control system driver board circuit according to this utility model.

[0013] Figure 4 This is a schematic diagram of the communication interface structure based on the drive board circuit of a brushless control system according to this utility model;

[0014] Figure 5 This is a schematic diagram of a temperature monitoring module based on a brushless control system driver board circuit according to this utility model.

[0015] Figure 6 This is a schematic diagram of a voltage monitoring structure based on a brushless control system driver board circuit according to this utility model.

[0016] Figure 7 This is a schematic diagram of the speed detection module based on the drive board circuit of a brushless control system according to this utility model;

[0017] Figure 8 This is a schematic diagram of a current detection module based on a brushless control system driver board circuit according to this utility model.

[0018] Figure 9 This is a schematic diagram of the gate drive module structure based on the drive board circuit of a brushless control system according to this utility model. Detailed Implementation

[0019] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9This utility model discloses a drive board circuit based on a brushless control system, including a power conversion module, a main control chip, a communication interface, a speed detection module, a current detection module, a gate drive module, a temperature monitoring module, and a voltage monitoring module. The power conversion module is connected to the main control chip, the main control chip is connected to the communication interface, the speed detection module is connected to the main control chip, the current monitoring module is connected to the main control chip, the gate drive module is connected to the main control chip, the temperature monitoring module is connected to the main control chip, the voltage monitoring module is connected to the main control chip, and the power conversion module is connected to the gate drive module. The speed detection module includes resistors R24, R25, and R26, capacitors C25, C26, and C27, and a connector P6. One end of resistor R24... A capacitor C25 is connected to the Hall effect sensor P6 (phase A), with one end of capacitor C25 grounded. One end of resistor R25 is connected to capacitor C26 and the Hall effect sensor P6 (phase B), with one end of capacitor C26 grounded. One end of resistor R26 is connected to capacitor C27 and the Hall effect sensor P6 (phase C), with one end of capacitor C27 grounded. Resistors R24, R25, and R26 are connected in parallel to a 3.3V power supply. The current detection module includes resistors R22 and R23, capacitors C24, R27, R28, and R29, an integrated chip U5A, capacitors C28, C29, and C30. One end of resistor R22 is grounded. One end of resistor R23 is connected to resistor R22. One end of resistor R22 is connected to capacitors C24 and C28. One end of capacitors C24 and C28 is connected in parallel to integrated chip U5A. One end of capacitor C24 is grounded, and one end of capacitor C28 is grounded. Integrated chip U5A is connected to resistors R28 and R27. One end of resistor R28 is grounded. Resistor R27 is connected in parallel with one end of integrated chip U5A and then connected to resistor R29. One end of resistor R29 is connected to capacitor C29, and one end of capacitor C29 is grounded. Capacitor C30 is connected in parallel with one end of integrated chip U5A and then connected to power supply 3.3V, one end of capacitor C30 is grounded, the gate drive module includes integrated chip U2, capacitor C17, polarized capacitor C21, polarized capacitor C22, polarized capacitor C23, diode D1, capacitor C18, resistor R16, resistor R17, MOSFET Q1, MOSFET Q2, motor interface PMA_A, diode D2, capacitor C19, resistor R18, resistor R19, MOSFET Q3, MOSFET Q4, motor interface PMB_A, diode D5, capacitor C20, resistor R20, resistor R21, MOSFET Q5, MOSFET Q6 and motor interface PMC_A, the voltage... Capacitor C17 is connected in parallel with integrated chip U2. One end of capacitor C17 is connected to a 12V power supply. One end of diode D1 is connected to capacitor C18. One end of capacitor C18 is connected to the emitter of MOSFET Q1 and the collector of MOSFET Q2. Capacitor C18 is connected in parallel with integrated chip U2. Resistor R16 is connected in series with integrated chip U2 and the base of MOSFET Q1. Resistor R17 is connected in series with integrated chip U2 and the base of MOSFET Q2. One end of diode D1 is connected to a 12V power supply. The collector of MOSFET Q1 is connected to a 24V power supply. One end of polarized capacitor C21 is connected to the collector of MOSFET Q1. The motor interface PMA_A connects to the collector of MOSFET Q2. One end of diode D2 is connected to capacitor C19. One end of capacitor C19 is connected to the emitter of MOSFET Q3 and the collector of MOSFET Q4. Capacitor C19 is connected in parallel with integrated circuit chip U2. Resistor R18 is connected in series with integrated circuit chip U2 and the base of MOSFET Q3. Resistor R19 is connected in series with integrated circuit chip U2 and the base of MOSFET Q4. One end of diode D2 is connected to a 12V power supply. The collector of MOSFET Q3 is connected to a 24V power supply. One end of polarized capacitor C22 is connected to the collector of MOSFET Q3. The motor interface PMA_A connects to... A diode is connected to the collector of MOSFET Q4. One end of diode D5 is connected to capacitor C20. One end of capacitor C20 is connected to the emitter of MOSFET Q5 and the collector of MOSFET Q6. Capacitor C20 is connected in parallel with integrated circuit chip U2. Resistor R20 is connected in series with integrated circuit chip U2 and the base of MOSFET Q5. Resistor R21 is connected in series with integrated circuit chip U2 and the base of MOSFET Q6. One end of diode D5 is connected to a 12V power supply. The collector of MOSFET Q5 is connected to a 24V power supply. One end of polarized capacitor C23 is connected to the collector of MOSFET Q5. The motor interface PMB_A is connected to the collector of MOSFET Q6.

[0020] This invention integrates a power conversion module, a main control chip, a communication interface, a speed detection module, a current detection module, a gate drive module, a temperature monitoring module, and a voltage monitoring module. The program runs on the U1 main control chip. The power conversion module converts the input 24V power into 12V power after passing through integrated circuit U3 and peripheral components, powering the gate drive module. The power conversion module then converts the 12V power into 3.3V power after passing through integrated circuit U4 and peripheral components, powering other modules. The speed detection module consists of a three-channel Hall effect detection circuit, which detects the position of the brushless motor core and transmits the information to the main chip U1. The main chip U1 receives the motor control signal through the communication interface and, combined with the position information fed back by the speed detection module, sends a PWM control signal to the gate drive module. After receiving the PWM control signal from the main chip, the gate drive module processes it through integrated chip U2, controlling the bridge A bootstrap circuit composed of MOSFETs Q1 and Q2, diode D1 and capacitor C18, and the bridge B bootstrap circuit composed of MOSFETs Q3 and Q4, diode D2 and capacitor C19. A bridge circuit (C) is formed by MOSFETs Q5 and Q6, and a bootstrap circuit (C) is formed by diode D5 and capacitor C20. These three pairs of bridge circuits conduct in a cyclical manner, enabling the brushless motor to rotate forward, reverse, accelerate, and decelerate. The current detection module filters the received current and voltage through capacitors C24 and C28, then amplifies it via integrated chip U5A and peripheral circuitry before transmitting it to the main chip U1. The temperature monitoring module transmits temperature information to the main chip U1 after voltage division by resistors R9 and R10 and filtering by capacitor C13. The voltage monitoring module sends voltage information to the main chip U1 after voltage division by resistors R4 and R5, current shunting by resistor R6, and filtering by capacitor C7. The main chip U1 integrates voltage, current, temperature, and speed information to comprehensively control the motor. When the motor experiences high temperature, high current, or speed control issues, it promptly reduces the speed or stops operation and issues an alarm. This comprehensive approach enhances the functionality and performance of the driver board circuit, stabilizes the driving effect, and provides comprehensive protection measures, facilitating market adoption.

[0021] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A driver board circuit based on a brushless control system, characterized in that: It includes a power conversion module, a main control chip, a communication interface, a speed detection module, a current detection module, a gate drive module, a temperature monitoring module, and a voltage monitoring module. The power conversion module is connected to the main control chip, the main control chip is connected to the communication interface, the speed detection module is connected to the main control chip, the current detection module is connected to the main control chip, the gate drive module is connected to the main control chip, the temperature monitoring module is connected to the main control chip, the voltage monitoring module is connected to the main control chip, and the power conversion module is connected to the gate drive module.

2. The brushless control system-based driver board circuit as described in claim 1, characterized in that: The rotational speed detection module includes resistors R24, R25, and R26, capacitors C25, C26, and C27, and connector P6. One end of resistor R24 ​​is connected to capacitor C25 and Hall phase A of connector P6, and one end of capacitor C25 is grounded. One end of resistor R25 is connected to capacitor C26 and Hall phase B of connector P6, and one end of capacitor C26 is grounded. One end of resistor R26 is connected to capacitor C27 and Hall phase C of connector P6, and one end of capacitor C27 is grounded. One end of resistors R24, R25, and R26 is connected in parallel to a 3.3V power supply.

3. The brushless control system-based driver board circuit as described in claim 1, characterized in that: The current detection module includes resistors R22 and R23, capacitors C24, R27, R28, and R29, an integrated chip U5A, capacitors C28, C29, and C30. One end of resistor R22 is grounded. One end of resistor R23 is connected to resistor R22. One end of resistor R22 is connected to capacitors C24 and C28. One end of capacitors C24 and C28 is connected in parallel to integrated chip U5A. One end of capacitor C24 is grounded. One end of capacitor C28 is grounded. Integrated chip U5A is connected to resistors R28 and R27. One end of resistor R28 is grounded. Resistor R27 is connected in parallel with one end of integrated chip U5A and then connected to resistor R29. One end of resistor R29 is connected to capacitor C29. One end of capacitor C29 is grounded. Capacitor C30 is connected in parallel with one end of integrated chip U5A and then connected to a 3.3V power supply. One end of capacitor C30 is grounded.

4. The brushless control system-based driver board circuit as described in claim 1, characterized in that: The gate drive module includes an integrated chip U2, capacitor C17, polarized capacitors C21, C22, and C23, diode D1, capacitor C18, resistors R16 and R17, MOSFETs Q1 and Q2, a motor interface PMA_A, diode D2, capacitor C19, resistors R18 and R19, MOSFETs Q3 and Q4, a motor interface PMB_A, diode D5, capacitor C20, resistors R20 and R21, MOSFETs Q5 and Q6, and a motor interface PMC_A. Capacitor C17 is connected to the integrated chip... U2 is connected in parallel. One end of capacitor C17 is connected to a 12V power supply. One end of diode D1 is connected to capacitor C18. One end of capacitor C18 is connected to the emitter of MOSFET Q1 and the collector of MOSFET Q2. Capacitor C18 is connected in parallel with integrated chip U2. Resistor R16 is connected in series with integrated chip U2 and the base of MOSFET Q1. Resistor R17 is connected in series with integrated chip U2 and the base of MOSFET Q2. One end of diode D1 is connected to a 12V power supply. The collector of MOSFET Q1 is connected to a 24V power supply. One end of polarized capacitor C21 is connected to the collector of MOSFET Q1. The motor interface PM... A_A connects to the collector of MOSFET Q2. One end of diode D2 is connected to capacitor C19. One end of capacitor C19 is connected to the emitter of MOSFET Q3 and the collector of MOSFET Q4. Capacitor C19 is connected in parallel with integrated circuit U2. Resistor R18 is connected in series with integrated circuit U2 and the base of MOSFET Q3. Resistor R19 is connected in series with integrated circuit U2 and the base of MOSFET Q4. One end of diode D2 is connected to a 12V power supply. The collector of MOSFET Q3 is connected to a 24V power supply. One end of polarized capacitor C22 is connected to the collector of MOSFET Q3. The motor interface PMB_A connects to the MOSFET... The diode D5 is connected to the collector of transistor Q4. One end of the diode D5 is connected to capacitor C20. One end of capacitor C20 is connected to the emitter of transistor Q5 and the collector of transistor Q6. Capacitor C20 is connected in parallel with integrated chip U2. Resistor R20 is connected in series with integrated chip U2 and the base of transistor Q5. Resistor R21 is connected in series with integrated chip U2 and the base of transistor Q6. One end of diode D5 is connected to a 12V power supply. The collector of transistor Q5 is connected to a 24V power supply. One end of polarized capacitor C23 is connected to the collector of transistor Q5. The motor interface PMB_A is connected to the collector of transistor Q6.

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