CN209676083U - A kind of sub- wiring board of BLDC motor interface and BLDC motor - Google Patents

Abstract

The utility model discloses a kind of sub- wiring board of BLDC motor interface and BLDC motors, the sub- wiring board of BLDC motor interface includes that circuit occurs for power-switching circuit, pwm signal processing circuit, VSP signal processing circuit, daughter board microprocessor, serial communication circuit and pwm signal, and power-switching circuit exports two-way DC power supply and powers to user's end control system；Input PWM speed-regulating signal output pwm signal after pwm signal processing circuit processes is input to parent track plate；Input analog voltage speed-regulating signal VSP is input to daughter board microprocessor by the processing of VSP signal processing circuit, and daughter board microprocessor driven pwm signal occurs the pwm signal that circuit generates and is input to parent track plate；User's end control system is communicated using serial communication circuit with parent track plate and data exchange.It is vdiverse in function, adaptable, applied widely, is able to satisfy client's diversified demand.

Description

A BLDC motor interface sub-circuit board and BLDC motor

Technical field:

The utility model relates to a BLDC motor interface sub circuit board and a BLDC motor.

Background technique:

As shown in Figure 1 and Figure 2, a general BLDC motor includes a motor entity and a motor controller. The motor entity includes the stator and rotor of the motor. In addition to matching the motor entity, the motor controller also needs to be compatible with the specific application system of the motor— That is, the control interface of the user-side control system matches, because different user-side control systems match different control signals. For example, the air-conditioning control system and the washing machine control system are both user-side control systems, and the control signals of the two systems are completely different. The traditional approach is to develop a motor and motor controller for each user-side control system, which leads to the following problems: 1) Motor manufacturers produce a large number of motor models, which is not easy to manage and standardize; 2) Wasteful development Time and R & D investment, because each new user-side control system needs to re-develop a motor, which increases the manufacturing cost of the product; 3) Redesign requires a new production process and certification costs, which increases investment; 4) Motor The scope of application is very narrow, and it is not convenient for large-scale promotion and application.

In order to solve the above-mentioned technical problems, there are some motor controllers that are connected to the mother-child circuit board. On two sub-circuit boards, use one of the sub-circuit boards to connect with the main circuit board, and the identification circuit on the sub-circuit board notifies the microprocessor unit on the main circuit board, and the microprocessor unit automatically configures the I/O on the sub-circuit board. O port type, so that it can be applied to different occasions by replacing different sub-circuit boards. It has a wide range of applications. Motor manufacturers can reduce the types of motors for easy management, which can reduce the R&D investment of motors, shorten the R&D cycle, reduce product costs, and simplify production. technology and improve efficiency.

Its specific technical scheme is shown in Figure 3, Figure 4 and Figure 5. The motor controller includes a microprocessor unit, a signal interface unit and an identification circuit. The microprocessor unit is arranged on the bus circuit board. The signal interface unit, the identification circuit The identification circuit is set on the sub-circuit board, and forms an electrical connection through the docking of the sub-circuit board and the main circuit board. The identification circuit inputs the identification signal to the microprocessor unit, and the microprocessor unit automatically configures each of the signal interface units according to the identification signal. The type of I/O port. Different types of signal interface units are matched with identification circuits that output different signals to form a plurality of different sub-circuit boards. The output end of the microprocessor unit is connected to the power inverter unit, the output end of the rotor position detection unit is connected to the input end of the microprocessor unit, and both the power inverter unit and the rotor position detection unit are arranged on the bus circuit board. The power supply circuit and the analog quantity detection unit are also arranged on the bus circuit board, and the analog quantity detection unit mainly detects analog quantity information such as bus current, bus voltage, phase current and NTC on the main board. The power supply circuit supplies power to each part of the circuit. The microprocessor unit is a CPU or a single-chip MCU or a digital signal processor DSP. The socket port 3a is arranged on the main circuit board, and the 11a road lugs are arranged in the socket port 3a, and there can be multiple sub-circuit boards, and the 11 road lugs on the socket port 3a are respectively E, N, L, M1, M2, M3, M4, M5, M6, M7, M8, each lug can be defined according to the following standards, E, N, L three are power input, M1, M2, M3, M4, M5, M6, M7, M8 are user The interface signal between the terminal control system and the sub circuit board. A slot 1a is provided on the mother circuit board, and a plug connector 2a is provided on the sub circuit board, and the plug connector 2a is nested in the slot 1a to electrically connect the sub circuit board and the mother circuit board.

Recently, some customers need customized interface sub-circuit boards with multiple speed regulation methods. The existing solutions are either only VSP speed regulation or only PWM speed regulation, and VSP speed regulation requires additional power, which is very inconvenient. In addition, The sub-circuit board cannot provide power for the control system at the user end, thereby also limiting the application range of the sub-circuit board.

Invention content:

The purpose of the utility model is to provide a BLDC motor interface sub-circuit board and a BLDC motor, which can solve the technical problem that the single speed regulation signal of the interface sub-circuit board cannot meet the diversified needs of customers.

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

A BLDC motor interface sub-circuit board, which is used for plugging in the mother circuit board of the motor controller to match the interface signal of the user-end control system, including a power conversion circuit, a PWM signal processing circuit, a VSP signal processing circuit, and a sub-board microprocessor , serial communication circuit and PWM signal generating circuit, wherein: the bus circuit board of the motor controller provides DC input power for the power conversion circuit, and the power conversion circuit outputs two DC power sources and supplies power to the user-side control system; the user-side control system Input the PWM speed regulation signal to the interface sub-circuit board, the PWM speed regulation signal is processed by the PWM signal processing circuit, and output the PWM signal to the main circuit board; the user terminal control system inputs the analog voltage speed regulation signal VSP to the sub circuit board, and the analog voltage regulation signal The speed signal VSP is processed by the VSP signal processing circuit and input to the microprocessor of the daughter board, and the microprocessor of the daughter board drives the PWM signal generated by the PWM signal generation circuit to input to the bus circuit board; the user-side control system uses the serial communication circuit and the bus circuit board for communication and data exchange.

The above-mentioned daughter board microprocessor drives the PWM signal and the PWM speed regulation signal generated by the PWM signal generating circuit to be processed by the PWM signal processing circuit, and then the output PWM signal is input to the bus circuit board through the same line.

The above-mentioned power conversion circuit outputs two DC power sources of +12V and +3.3V to supply power to the control system at the user end.

The specification of the above-mentioned user-end control system inputting the PWM speed regulation signal to the sub-circuit board is: the voltage range is 12V-24VDC, and the frequency range is 80Hz-120Hz.

Specifications of the above-mentioned user terminal control system inputting the analog voltage speed regulation signal VSP to the sub circuit board: the voltage range is 0V-12V DC.

The above-mentioned sub-circuit board is connected with the client control system and has at least 6 useful ports. The 6 useful ports on the sub-circuit board are:

12V power output port, the sub-circuit board provides 12VDC power to the user-end control system;

INPWM input port, the user terminal control system inputs PWM speed regulation signal to the sub circuit board;

GNDISO input port, the signal common ground provided by the client control system to the sub circuit board;

VSP input port, the user terminal control system inputs the analog voltage speed regulation signal VSP to the sub circuit board;

3.3V power output port, the sub-circuit board provides 3.3VDC power to the user-end control system;

R/T half-duplex serial communication port, the sub-circuit board and the user-side control system exchange data with each other.

A power input port V is also provided on the sub-circuit board, and the client control system provides power for the serial communication circuit by using the power input port V.

The above interface sub-circuit board also includes an identification circuit, and the identification circuit provides an identification signal BSEL to the main circuit board.

The above-mentioned sub-circuit board and the main circuit board are provided with serial communication ports TXD and RXD.

The above-mentioned bus circuit board provides two DC input power sources of +15V and +5V for the power conversion circuit and provides a grounding port GND.

A BLDC motor includes a motor controller and a motor body, the motor body includes a stator assembly, a rotor assembly, and a motor housing, the motor controller includes a bus circuit board and a sub circuit board, and the bus circuit board includes a motherboard microprocessor, an inverter circuit, The power supply circuit and the detection circuit are characterized in that the sub-circuit board is the above-mentioned BLDC motor interface sub-circuit board.

Compared with the prior art, the utility model has the following effects:

1) The interface sub-circuit board of the utility model not only has the function of PWM speed regulation, but also has the function of VSP speed regulation. At the same time, it can provide two-way power supply for the user-end control system, and has a serial port communication function, with various functions and adaptability Strong, wide range of application, can meet the diverse needs of customers.

2) Other advantages of the present utility model are described in detail in the embodiment section.

Description of drawings:

Figure 1 is a wiring diagram of a traditional motor controller and a user-end control system;

Fig. 2 is a schematic block diagram of a traditional motor controller;

Fig. 3 is a schematic diagram of the principle of using a mother-child circuit board in a traditional motor controller;

Fig. 4 is a schematic diagram of the appearance of a bus circuit board of a traditional motor controller;

FIG. 5 is a schematic diagram of the appearance of a sub-circuit board of a conventional motor controller;

Fig. 6 is the circuit block diagram of the sub circuit board of the utility model embodiment one;

Fig. 7 is a partial circuit diagram corresponding to Fig. 6;

Fig. 8 is a partial circuit diagram corresponding to Fig. 6;

Fig. 9 is a partial circuit diagram corresponding to Fig. 6;

Fig. 10 is a circuit block diagram of the second embodiment of the utility model.

Detailed ways:

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

Embodiment one:

As shown in Fig. 6, Fig. 7, Fig. 8, and Fig. 9, what this embodiment provides is a BLDC motor interface sub-circuit board, which is used to plug in the bus circuit board of the motor controller to match the interface signal of the user-end control system , including a power conversion circuit 1, a PWM signal processing circuit 3, a VSP signal processing circuit 2, a sub-board microprocessor 4, a serial communication circuit 6 and a PWM signal generating circuit 5, wherein:

The bus circuit board of the motor controller provides DC input power for the power conversion circuit 1, that is, provides two DC power sources of +15V and +5V and the ground terminal GND, and the power conversion circuit 1 outputs two DC power sources and supplies them to the user end control system Power supply, respectively +12VDC, 3.3VDC two-way DC power supply and ground terminal GNDISO;

The user-side control system inputs a PWM speed regulation signal to the interface sub-circuit board, and the PWM speed regulation signal is processed by the PWM signal processing circuit 3 to output a PWM signal and input it to the main circuit board;

The user terminal control system inputs the analog voltage speed regulation signal VSP to the sub circuit board, and the analog voltage speed regulation signal VSP is processed by the VSP signal processing circuit 2 and input to the daughter board microprocessor 4, and the daughter board microprocessor 4 drives the PWM signal generation circuit 5 The generated PWM signal is input to the bus board;

The client control system uses the serial communication circuit 6 to communicate and exchange data with the bus board.

The interface sub-circuit board of the utility model not only has the function of PWM speed regulation, but also has the function of VSP speed regulation. At the same time, it can provide two-way power supply for the user-end control system, and has a serial port communication function. It has various functions and strong adaptability. It has a wide range of applications and can meet the diverse needs of customers.

The above-mentioned sub-board microprocessor 4 drives the PWM signal and the PWM speed regulation signal generated by the PWM signal generating circuit 5 to be processed by the PWM signal processing circuit 3, and then the output PWM signal is input to the bus circuit board through the same line, which can further simplify the circuit structure and reduce Occupies port resources. When the VSP input port has a signal input, the PWM input port is shielded; when the PWM input port signal is input, the VSP input port is shielded.

The power conversion circuit 1 above outputs two DC power sources of +12V and +3.3V and supplies power to the control system at the user end, which facilitates the use of the control system at the user end.

The specification of the above-mentioned user terminal control system inputting PWM speed regulation signal to the sub circuit board is: the voltage range is 12V-24VDC, and the frequency range is 80Hz-120Hz.

The specifications of the above-mentioned user terminal control system inputting the analog voltage speed regulation signal VSP to the sub circuit board: the voltage range is 0V-12V DC.

Eight plug-in ports are set between the sub-circuit board and the user-end control system, and the eight plug-in ports are respectively M1, M2, M3, M4, M5, M6, M7, and M8. The above-mentioned sub-circuit board and the user-end The control system is connected and set at least 6 useful ports, the 6 useful ports on the sub circuit board are:

12V power output port, the sub-circuit board provides 12VDC power to the user-end control system;

PWM input port, the user terminal control system inputs the PWM speed regulation signal to the sub circuit board;

GNDISO input port, the signal common ground provided by the client control system to the sub circuit board;

VSP input port, the user terminal control system inputs the analog voltage speed regulation signal VSP to the sub circuit board;

3.3V power output port, the sub-circuit board provides 3.3VDC power to the user-end control system;

R/T half-duplex serial communication port, the sub-circuit board and the user-side control system exchange data with each other.

There is also a power input port V on the sub-circuit board, and the client control system provides power for the serial communication circuit by using the power input port V, and can also use the power conversion circuit 1 to output +12V to provide power for the serial communication circuit. .

It also includes an identification circuit 7, and the identification circuit 7 provides identification signal BSEL to the main circuit board, so that the main circuit board can identify the interface type of the sub circuit board.

The above-mentioned sub-circuit board and the main circuit board are provided with serial communication ports TXD and RXD.

The above-mentioned bus circuit board provides two DC input power sources of +15V and +5V for the power conversion circuit and provides a grounding port GND.

Embodiment two:

As shown in Figure 10, a BLDC motor includes a motor controller and a motor body, the motor body includes a stator assembly, a rotor assembly, and a motor housing, the motor controller includes a bus circuit board and a sub circuit board, and the bus circuit board includes a motherboard microprocessor Inverter, inverter circuit, power supply circuit and detection circuit, characterized in that: the sub-circuit board is the BLDC motor interface sub-circuit board described in Embodiment 1.

The above embodiment is a preferred embodiment of the present utility model, but the embodiment of the present utility model is not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present utility model are all All equivalent replacement methods are included in the protection scope of the present utility model.

Claims (11)

1. A BLDC motor interface sub-circuit board, which is used for plugging in the mother circuit board of the motor controller to match the interface signal of the user-end control system, including a power conversion circuit, a PWM signal processing circuit, a VSP signal processing circuit, and a sub-board microcontroller Processor, serial communication circuit and PWM signal generating circuit, wherein: The bus circuit board of the motor controller provides DC input power for the power conversion circuit, and the power conversion circuit outputs two DC power sources and supplies power to the user-end control system; The user-end control system inputs the PWM speed regulation signal to the interface sub-circuit board, and the PWM speed regulation signal is processed by the PWM signal processing circuit to output the PWM signal and input it to the main circuit board; The user-end control system inputs the analog voltage speed regulation signal VSP to the sub circuit board, and the analog voltage speed regulation signal VSP is processed by the VSP signal processing circuit and input to the sub-board microprocessor, and the sub-board microprocessor drives the PWM signal generated by the PWM signal generation circuit input to the bus board; The user end control system uses the serial communication circuit to communicate and exchange data with the bus circuit board. 2. A kind of BLDC motor interface sub-circuit board according to claim 1, characterized in that: the sub-board microprocessor drives the PWM signal and the PWM speed control signal generated by the PWM signal generating circuit to output the PWM signal after being processed by the PWM signal processing circuit. The signal is input to the bus circuit board through the same line. 3. A BLDC motor interface sub-circuit board according to claim 1 or 2, characterized in that: the power conversion circuit outputs two DC power sources of +12V and +3.3V to supply power to the user-end control system. 4. A BLDC motor interface sub-circuit board according to claim 3, characterized in that: the user-end control system inputs the PWM speed regulation signal to the sub-circuit board as follows: the voltage range is 12V-24VDC, and the frequency range is 80Hz -120Hz. 5. A BLDC motor interface sub-circuit board according to claim 4, characterized in that: the specification of the analog voltage speed regulation signal VSP input to the sub-circuit board by the user terminal control system: the voltage range is 0V-12V DC. 6. A kind of BLDC motor interface sub-circuit board according to claim 5, characterized in that: the sub-circuit board is connected with the user-end control system and at least 6 useful ports are set, and on the sub-circuit board, the 6 The useful ports are: 12V power output port, the sub-circuit board provides 12VDC power to the user-side control system; INPWM input port, the user terminal control system inputs PWM speed regulation signal to the sub circuit board; GNDISO input port, the signal common ground provided by the client control system to the sub circuit board; VSP input port, the user terminal control system inputs the analog voltage speed regulation signal VSP to the sub circuit board; 3.3V power output port, the sub-circuit board provides 3.3VDC power to the user-end control system; R/T half-duplex serial communication port, the sub-circuit board and the user-side control system exchange data with each other. 7. A kind of BLDC motor interface sub-circuit board according to claim 6, characterized in that: a power input port V is also arranged on the sub-circuit board, and the user terminal control system provides a serial communication using the power input port V The circuit provides power. 8. A BLDC motor interface sub-circuit board according to claim 1 or 2, characterized in that it also includes an identification circuit, which provides an identification signal BSEL to the main circuit board. 9. A BLDC motor interface sub-circuit board according to claim 8, wherein the sub-circuit board and the main circuit board are provided with serial communication ports TXD and RXD. 10. A BLDC motor interface sub-circuit board according to claim 9, wherein the bus circuit board provides two DC input power sources of +15V and +5V and a grounding port GND for the power conversion circuit. 11. A BLDC motor, comprising a motor controller and a motor body, the motor body comprising a stator assembly, a rotor assembly and a motor housing, the motor controller comprising a bus circuit board and a sub circuit board, the bus circuit board comprising a motherboard microprocessor, an inverter The electric circuit, the power supply circuit and the detection circuit are characterized in that the sub-circuit board is the BLDC motor interface sub-circuit board according to any one of claims 1 to 10.