Multifunctional control device of dust collector

Abstract

The utility model provides a multifunctional control device of a dust collector. The multifunctional control device comprises a motor control board, a battery pack charging function block, a motor driving function block and a floor brush motor function block. The motor control board is provided with a control chip, the battery pack charging function block is arranged to be a battery circuit, the motor driving function block is arranged to be a motor driving circuit, and the floor brush motor function block is arranged to be a motor switching circuit. According to the multifunctional control device of the dust collector, other functional modules of the dust collector are integrated on the motor control board, so that the communication difficulty among the modules is reduced, and the communication accuracy among the modules is improved; the functions of charging and discharging the battery pack and controlling the ground brush motor are realized by utilizing an overflow pin of the main control chip, so that the system cost of the whole dust collector is effectively reduced; a battery pack charging and discharging function and a ground brush motor control function are put on the motor control board, so that integration of SMT and testing is facilitated, the processing and testing efficiency is improved, and the processing and testing cost is reduced.

Description

Technical Field

[0001] The utility model relates to a multifunctional control device for a vacuum cleaner. Background Art

[0002] At present, as a smart home appliance, the vacuum cleaner has been widely used. For more convenient use by users, highly intelligent control functions are applied to the use of the vacuum cleaner. There are two traditional vacuum cleaner control methods. One is the manual mode, where the main control board buttons provide gear signals to the suction motor and the floor brush motor. The other is the intelligent mode, where the main control board identifies the dirt condition of the floor to be cleaned through intelligent sensors and provides gear signals for the suction motor and the floor brush motor, thereby controlling the power of the suction motor and the floor brush motor. Both of these modes require the control main board of the vacuum cleaner to communicate with other control modules and make control actions based on signal feedback, which not only complicates the internal structure of the vacuum cleaner but also increases the communication difficulty between components, further increasing the cost of the vacuum cleaner.

[0003] If the control device of the vacuum cleaner is integrated on the control main board, and a single control chip is used to control each component, and communication is directly achieved using electrical signals without the need for connection and feedback based on communication signals, the structural space and cost of the control device can be greatly reduced, and numerous functions of the vacuum cleaner can also be integrated. Content of the Utility Model

[0004] The utility model aims to provide a multifunctional control device for a vacuum cleaner. By replacing the control chips of each component with control circuits and using the main control chip to control the control circuits with different functions respectively, numerous functions of the vacuum cleaner are integrated on the control circuit board, which not only reduces the structure and size of the control device but also lowers the cost.

[0005] To solve the above problems, a multifunctional control device for a vacuum cleaner provided by the utility model adopts the following technical solutions:

[0006] A multi-functional control device for a vacuum cleaner, comprising a motor control board, a battery pack charging function block, a motor drive function block and a floor brush motor function block; the motor control board is provided with a main control chip, and pins extend around it, respectively connecting the battery pack charging function block, the motor drive function block and the floor brush motor function block; the battery pack charging function block is located on the motor control board, connecting the pins of the main control chip, and is set as a battery circuit for controlling the charging and discharging of the vacuum cleaner battery pack; the motor drive function block is located on the motor control board, connecting the pins of the main control chip, and is set as a motor drive circuit for controlling the main function motor of the vacuum cleaner; the floor brush motor function block is located on the motor control board, connecting the pins of the main control chip, and is set as a motor switch circuit for controlling the floor brush motor of the vacuum cleaner.

[0007] Among them, a digital chip is provided in the battery circuit, connecting the main control chip, converting the signal output by the main control chip into a current signal, and realizing the digital logic function of the battery circuit; at the same time, a battery triode and a battery MOS tube are also provided in the battery circuit; the battery MOS tube is connected to the battery triode, and the on-off of the battery MOS tube is controlled by the battery triode, thereby realizing the charging and discharging control of the battery by the battery circuit.

[0008] Further, a first sampling resistor is also provided in the battery circuit, connecting the digital chip and at the same time connecting the main control chip, sampling the current in the battery circuit, and the sampling information is transmitted back to the main control chip to judge the charging protection state of the battery through the sampled current signal.

[0009] Further, the motor drive circuit is provided with six motor MOS tubes, the six motor MOS tubes are connected to each other, corresponding to connect the motor stator, and the on-off of the current is realized by the on-off of different motor MOS tubes, thereby realizing the magnetic field transformation of the motor stator and forming the rotating magnetic field required for the motor to work.

[0010] Further, a second sampling resistor is also provided on the motor drive circuit, the second sampling resistor is respectively connected to the six motor MOS tubes, and the rotor position of the motor is analyzed through the sampling result of the current signal.

[0011] Further, the second sampling resistor is connected to the main control chip, and the main control chip analyzes the sampling signal through the FOC algorithm to realize the control of the motor rotor position.

[0012] Further, the motor switch circuit controls the floor brush motor of the vacuum cleaner, and is provided with a control MOS transistor. The control MOS transistor is connected to the main control chip, and the rotation speed of the floor brush motor is controlled by the electrical signal output by the main control chip.

[0013] Further, a freewheeling diode is also provided on the motor switch circuit. One end of the freewheeling diode is connected to the control MOS transistor, and the other end is connected to the floor brush motor, providing a freewheeling channel for the continuous operation of the motor.

[0014] The beneficial effects of the present utility model are as follows: A multi-functional control device for a vacuum cleaner provided by the present utility model integrates other functional modules of the vacuum cleaner onto the motor control board, reducing the communication difficulty between modules and improving the communication accuracy between modules; Utilizing the overflow pin of the main control chip to achieve the functions of battery pack charge and discharge and floor brush motor control, effectively reducing the system cost of the entire vacuum cleaner; Placing the battery pack charge and discharge function and the floor brush motor control function on the motor control board is more conducive to the integration of SMT and testing, improving the processing and testing efficiency and reducing the processing and testing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 is a schematic diagram of the control main board of the present utility model.

[0016] Attached Figure 2 is a circuit diagram of the battery circuit of the present utility model.

[0017] Attached Figure 3 is a circuit diagram of the motor drive circuit of the present utility model.

[0018] Attached Figure 4 is a circuit diagram of the motor switch circuit of the present utility model.

[0019] Attached Figure 5 is a circuit diagram of the main control chip of the present utility model.

[0020] Wherein: 1. Motor control board, 2. Battery pack charging function block, 3. Motor drive function block, 4. Floor brush motor function block, M1. Digital chip, RS1. First sampling resistor, Q7. Battery triode, Q8. Battery MOS transistor, Q1-Q6. Motor MOS transistors, RS2. Second sampling resistor, Q11. Control MOS transistor, D7. Freewheeling diode. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to more clearly understand the technical solution provided by the present utility model, the following further describes the present utility model in conjunction with the drawings and specific embodiments.

[0022] As shown in the attached drawings, a multifunctional control device for a vacuum cleaner provided by the present utility model includes a motor control board 1, a battery pack charging function block 2, a motor driving function block 3, and a floor brush motor function block 4; the motor control board 1 is provided with a control chip, and pins extend around it, respectively connecting the battery pack charging function block 2, the motor driving function block 3, and the floor brush motor function block 4; the battery pack charging function block 2 is located on the motor control board 1, connecting the pins of the main control chip, and is set as a battery circuit for controlling the charging and discharging of the vacuum cleaner battery pack; the motor driving function block 3 is located on the motor control board 1, connecting the pins of the main control chip, and is set as a motor driving circuit for controlling the main function motor of the vacuum cleaner; the floor brush motor function block 4 is located on the motor control board 1, connecting the pins of the main control chip, and is set as a motor switch circuit for controlling the floor brush motor of the vacuum cleaner.

[0023] Among them, a digital chip M1 is provided in the battery circuit, connecting the main control chip, converting the signal output by the main control chip into a current signal, and realizing the digital logic function of the battery circuit; at the same time, a battery triode Q7 and a battery MOS tube Q8 are also provided in the battery circuit; the battery MOS tube Q8 is connected to the battery triode Q7, and the on-off of the battery MOS tube Q8 is controlled by the battery triode Q7, thereby realizing the charging and discharging control of the battery by the battery circuit.

[0024] Furthermore, a first sampling resistor RS1 is also provided in the battery circuit, connecting the digital chip M1 and at the same time connecting the main control chip, sampling the current in the battery circuit, and the sampling information is transmitted back to the main control chip to judge the charging protection state of the battery through the sampled current signal.

[0025] Furthermore, the motor driving circuit is provided with six motor MOS tubes Q1 - Q6, the six motor MOS tubes Q1 - Q6 are connected to each other, corresponding to connecting the motor stator, and the on-off of the current is realized by the on-off of the different motor MOS tubes Q1 - Q6, thereby realizing the magnetic field transformation of the motor stator and forming the rotating magnetic field required for the motor to work.

[0026] Furthermore, a second sampling resistor RS2 is also provided on the motor driving circuit, the second sampling resistor RS2 is respectively connected to the six motor MOS tubes Q1 - Q6, and the rotor position of the motor is analyzed through the sampling result of the current signal.

[0027] Furthermore, the second sampling resistor RS2 is connected to the main control chip, and the main control chip analyzes the sampled signal through the FOC algorithm to realize the control of the motor rotor position.

[0028] Furthermore, the motor switch circuit controls the floor brush motor of the vacuum cleaner. A control MOS transistor Q11 is provided. The control MOS transistor Q11 is connected to the main control chip, and the rotational speed of the floor brush motor is controlled by the electrical signal output by the main control chip.

[0029] Furthermore, a freewheeling diode D7 is also provided on the motor switch circuit. One end of the freewheeling diode D7 is connected to the control MOS transistor Q11, and the other end is connected to the floor brush motor, providing a freewheeling channel for the continuous operation of the motor.

Claims

1. A multifunctional control device for a vacuum cleaner, characterized in that: It includes a motor control board, a battery pack charging functional block, a motor drive functional block and a floor brush motor functional block; the motor control board is provided with a main control chip, and pins are extended around it, which are respectively connected to the battery pack charging functional block, the motor drive functional block and the floor brush motor functional block; the battery pack charging functional block is located on the motor control board, connected to the pins of the main control chip, and is set as a battery circuit for controlling the charging and discharging of the vacuum cleaner battery pack; the motor drive functional block is located on the motor control board, connected to the pins of the main control chip, and is set as a motor drive circuit for controlling the main function motor of the vacuum cleaner; the floor brush motor functional block is located on the motor control board, connected to the pins of the main control chip, and is set as a motor switch circuit for controlling the floor brush motor of the vacuum cleaner; Among them, the battery circuit is provided with a digital chip, which is connected to the main control chip, and converts the signal output by the main control chip into a current signal, thereby realizing the digital logic function of the battery circuit; at the same time, the battery circuit is also provided with a battery triode and a battery MOS tube; the battery MOS tube is connected to the battery triode, and the battery MOS tube is controlled to be turned on and off by the battery triode, thereby realizing the battery circuit to control the charging and discharging of the battery.

2. A multifunctional control device for a vacuum cleaner according to claim 1, characterized in that: The battery circuit is also provided with a first sampling resistor, which is connected to the digital chip and the main control chip at the same time, samples the current in the battery circuit, transmits the sampling information back to the main control chip, and determines the charging protection state of the battery through the current sampling signal.

3. A multifunctional control device for a vacuum cleaner according to claim 1, characterized in that: The motor drive circuit is provided with six motor MOS tubes, which are connected to each other and correspondingly connected to the motor stator. The current is turned on and off by turning on and off different motor MOS tubes, thereby realizing the magnetic field transformation of the motor stator and forming the rotating magnetic field required for the motor to work.

4. A multifunctional control device for a vacuum cleaner according to claim 3, characterized in that: The motor drive circuit is also provided with a second sampling resistor, which is respectively connected to the six motor MOS tubes, and the rotor position of the motor is analyzed through the sampling result of the current signal.

5. A multifunctional control device for a vacuum cleaner according to claim 4, characterized in that: The second sampling resistor is connected to the main control chip, and the main control chip analyzes the sampling signal through the FOC algorithm to control the motor rotor position.

6. A multifunctional control device for a vacuum cleaner according to claim 1, characterized in that: The motor switch circuit controls the floor brush motor of the vacuum cleaner and is provided with a control MOS tube. The control MOS tube is connected to the main control chip and controls the rotation speed of the floor brush motor through the electrical signal output by the main control chip.

7. A multifunctional control device for a vacuum cleaner according to claim 6, characterized in that: A freewheeling diode is also provided on the motor switch circuit. One end of the freewheeling diode is connected to the control MOS tube, and the other end is connected to the ground brush motor to provide a freewheeling channel for the motor to continue working.

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