CN114097174A

CN114097174A - Motor controller of electrical equipment, motor device of electrical equipment and electrical equipment

Info

Publication number: CN114097174A
Application number: CN202080003523.5A
Authority: CN
Inventors: 赵小安; 葛森; 龚黎明; 秦向南
Original assignee: Midea Welling Motor Technology Shanghai Co Ltd; Huaian Welling Motor Manufacturing Co Ltd
Current assignee: Midea Welling Motor Technology Shanghai Co Ltd; Huaian Welling Motor Manufacturing Co Ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2022-02-25
Also published as: WO2021253249A1; CN113054808A; CN113054808B

Abstract

A motor controller (1) of an electrical appliance (200), a motor arrangement (100) of an electrical appliance and an electrical appliance, the motor controller comprising: the first control circuit (102) is electrically connected with the first driving motor (2) and the second driving motor (3) and is used for controlling the first driving motor and the second driving motor to operate; and a second control circuit (104) electrically connected to the winding of the second drive motor for controlling the winding (32a, 32b, 32c) of the second drive motor to function as a reactor. When the reactor is needed, the winding of the second driving motor is used as the reactor, so that the structure of the electrical equipment is simplified, the utilization space in the whole machine is saved, the integration level of the electrical equipment can be improved, the installation procedures are reduced, the production efficiency is improved, and the system material cost of the electrical equipment is reduced.

Description

Motor controller of electrical equipment, motor device of electrical equipment and electrical equipment

Technical Field

The application relates to the technical field of electrical equipment, in particular to a motor controller of the electrical equipment, a motor device of the electrical equipment and the electrical equipment.

Background

Generally, an electric appliance such as a washing machine includes a motor device, a reactor, and the like. The motor device is arranged at one part and is used for driving the roller to rotate. The reactor is usually installed elsewhere and connected to the circuit of the electrical device by a wire. The motor device and the reactor need to be separately installed, so that more space is occupied, and the structure of the electrical equipment is complex; and more parts are installed, so that the production line efficiency of the electrical equipment is low, more processes are needed, and the assembly cost is high.

Disclosure of Invention

In order to solve at least one of the above technical problems, an object of the present application is to provide a motor controller of an electric appliance.

Another object of the present application is to provide another motor controller of an electric appliance.

It is a further object of the present application to provide a motor apparatus including the above motor controller.

It is a further object of the present application to provide an electrical appliance comprising the above-mentioned motor arrangement.

In order to achieve the above object, a first aspect of the present invention provides a motor controller for an electrical apparatus, the electrical apparatus including a first driving motor and a second driving motor, an operating power of the first driving motor being greater than an operating power of the second driving motor, wherein the motor controller includes: the first control circuit is electrically connected with the first driving motor and the second driving motor and is used for controlling the first driving motor and the second driving motor to operate; and a second control circuit electrically connected to the winding of the second drive motor for controlling the winding of the second drive motor to function as a reactor.

The technical scheme of this application first aspect provides an electrical equipment's motor controller, including first control circuit and second control circuit, and first control circuit both is connected with first driving motor electricity, and is connected with second driving motor electricity again for first driving motor's motor controller possesses three control function, and the operation of the first driving motor of one of them function control, the operation of another function control second driving motor, and the winding of another function control second driving motor acts as the reactor. Therefore, when the reactor is needed, the second control circuit is directly utilized to enable the winding of the second driving motor to serve as the reactor, so that an additional reactor is omitted, the structure of the electrical equipment is simplified, the utilization space in the whole machine is saved, the integration level of the electrical equipment can be improved, the installation procedures are reduced, the production efficiency is improved, and the system material cost of the electrical equipment is effectively reduced.

In other words, the control circuit of the first driving motor and the control circuit of the second driving motor are integrated, so that a controller does not need to be additionally arranged on the second driving motor, and the integration level of the electrical equipment is improved; the first driving motor and the second driving motor can share certain hardware structures (such as a shared rectifying circuit), so that the number of components of the electrical equipment can be reduced, and the circuit layout of the electrical equipment is simplified. Meanwhile, the motor controller is additionally provided with a second control circuit, so that a winding of a second driving motor can serve as a reactor, the reactor additionally arranged in electrical equipment is omitted, the number of parts is further reduced, the structure of the whole machine is simplified, the internal space of the whole machine is saved, the cost is reduced, the mounting process is simplified, and the production efficiency is improved.

In the above technical solution, the motor controller includes a power supply circuit, the power supply circuit being used for connecting an external power supply; the second control circuit is used for enabling the winding of the second driving motor to be selectively connected to the power circuit.

When the electrical equipment operates main functions, the first driving motor operates, and at the moment, the power of a motor controller is high, and an incoming line reactor is generally needed; and when electrical equipment operates secondary functions, the second driving motor operates, the power of the controller is low at the moment, and an incoming line reactor is generally not needed. Therefore, a second control circuit is additionally arranged on the motor controller, and the winding of the second driving motor is selectively connected into the power circuit by using the second control circuit, so that the function of the wire-inlet reactor can be equivalently realized by using the winding of the second driving motor. This is equivalent to the function integration with the inlet wire reactor in motor controller to saved the inlet wire reactor of extra setting, can effectively improve electrical equipment's integrated level, promoted production efficiency, reduced material cost, improved electrical equipment inner space's utilization ratio, for optimizing electrical equipment inner wiring design and structural design bring the facility.

In the above technical solution, the first control circuit is electrically connected to the power circuit; the second control circuit is electrically connected with the power supply circuit and comprises a component switching circuit, the component switching circuit comprises a connecting circuit and a switching piece arranged on the connecting circuit, the connecting circuit connects the winding of the second driving motor in series to the power supply circuit, and the switching piece is used for controlling the on-off of the connecting circuit according to the state of the electrical equipment so as to enable the winding of the second driving motor to be selectively connected in series to the power supply circuit.

The motor controller is connected with an external power supply through a power circuit, so that normal power supply of the motor controller is ensured. Meanwhile, the power circuit, the first control circuit and the second control circuit are integrated on the motor controller, and the first control circuit and the second control circuit are close to the power circuit, so that the wiring design is facilitated, the circuit structure is simplified, and the integration level of a circuit board of the motor controller is improved. The power supply circuit supplies power to the first control circuit, and the first control circuit can control the first driving motor and the second driving motor to normally operate. The second control circuit realizes a control function through the component switching circuit, and particularly controls the winding of the second driving motor to be selectively connected into the power circuit in series by controlling the switching piece to be switched on or switched off. When the switching piece is connected with the connecting circuit, the winding of the second driving motor is connected in series with the power circuit through the connecting circuit; when the switching piece disconnects the connection line, the winding of the second driving motor is disconnected from the power circuit. The scheme has the advantages of ingenious design, low cost and easy popularization.

In the above technical solution, the first control circuit includes: the first inverter circuit is electrically connected with the first driving motor; and the second inverter circuit is electrically connected with the second driving motor and is connected with the first inverter circuit in parallel.

The first control circuit comprises a first inverter circuit and a second inverter circuit which are connected in parallel, a rectification circuit is convenient to share, and a rectification circuit does not need to be additionally arranged for the second driving motor, so that the integration level of the motor controller is improved, and the product cost is reduced. The first inverter circuit can adjust the voltage to be suitable for the voltage of the first driving motor to operate, and the second inverter circuit can adjust the voltage to be suitable for the voltage of the second driving motor to operate, so that the normal operation of the first driving motor and the second driving motor is ensured. Of course, the first control circuit may also include other circuit structures for controlling the operation of the first driving motor and the second driving motor.

In the above technical solution, the power supply circuit includes: the rectification main circuit is used for connecting the external power supply; the filter circuit is connected with the main rectifier circuit and the first control circuit; the component switching circuit is connected to the direct current bus, so that a winding of the second driving motor is connected to the direct current bus in series.

According to the scheme, the winding of the second driving motor can be connected in series with the direct current bus rectified by the rectifying circuit, so that the winding of the second driving motor can also be connected in series with the direct current bus rectified by the rectifying circuit, the winding of the second driving motor is connected in series with an alternating current power supply inlet wire, and the winding of the second driving motor serves as a function of an inlet wire reactor. Therefore, the technical personnel can conveniently and reasonably design the circuit board according to factors such as specific shape, size and layout of the circuit board, other structures of electrical equipment and the like so as to optimize the structure and performance of the circuit board.

Specifically, the power supply circuit includes a rectifier main circuit and a filter circuit. The rectifier main circuit can be with alternating current conversion direct current, can utilize alternating current power supply for the motor controller power supply like this, and electrical equipment utilizes power work such as common municipal alternating current of being convenient for, improves electrical equipment's universality. The filter circuit filters out ripples in the rectified output voltage, so that the voltage supplied to the first control circuit is more stable, the first control circuit can provide required electric energy according to the operation requirements of the first driving motor and the second driving motor, and the operation requirements of the first driving motor and the second driving motor are met. Meanwhile, the direct current bus is positioned between the rectifier main circuit and the filter circuit, and the component switching circuit can be connected between the rectifier main circuit and the filter circuit, so that the influence on the filter circuit and the operation of a subsequent first control circuit after the winding of the second driving motor is connected in series is prevented.

In the above technical solution, the dc bus includes a dc positive bus; the switching piece is connected to the direct current positive bus and is used for controlling the direct current positive bus to be conducted with the winding of the second driving motor or directly conducted with the filter circuit; or the direct current bus comprises a direct current negative bus; the switching piece is connected to the direct current negative bus and used for controlling the direct current negative bus to be conducted with the winding of the second driving motor or directly conducted with the filter circuit.

The second inverter circuit and the first inverter circuit share the rectifying circuit, and the second driving motor does not need to be additionally provided with the rectifying circuit, so that the integration level of the motor controller is improved, and the product cost is reduced. The scheme specifically utilizes a switching piece and a connecting circuit to realize that the winding of the second driving motor is selectively connected in series with the power circuit, thereby being beneficial to reducing the cost.

In particular, the component switching circuit may be connected to the dc positive bus. When the complete machine is in the state that first driving motor operation corresponds, the positive generating line of switching piece control direct current switches on with second driving motor's winding, then the upper tube freewheeling diode of the neutral point of rectification main circuit, the positive generating line of direct current, interconnecting link, second driving motor's winding, second inverter circuit's H bridge switches on in order, then connects first inverter circuit, promptly: the winding of the second driving motor is connected to the direct current positive bus. When the whole machine is in a state corresponding to the operation of the second driving motor, the switching piece controls the direct-current positive bus to be directly communicated with the filter circuit, the winding of the second driving motor is disconnected with the power circuit, and the winding of the second driving motor is switched back to the normal circuit of the second driving motor, so that the normal operation of the second driving motor and the driving components thereof is ensured.

Alternatively, the module switching circuit may be connected to the dc negative bus. When the complete machine is in the state that first driving motor operation corresponds, switching piece control direct current negative bus switches on with second driving motor's winding, and then filter circuit, the lower tube freewheeling diode of the H bridge on the second inverter circuit, second driving motor's winding, the neutral point of second driving motor's winding, connecting circuit, rectification main circuit switch on in order, promptly: the winding of the second driving motor is connected to the direct current negative bus. When the whole machine is in a state corresponding to the operation of the second driving motor, the switching piece controls the direct-current negative bus to be directly communicated with the filter circuit, the winding of the second driving motor is disconnected with the power circuit, and the winding of the second driving motor is switched back to a normal circuit of the second driving motor, so that the normal operation of the second driving motor and the driving components of the second driving motor is ensured.

In any of the above technical solutions, the component switching circuit is specifically configured to: when the electrical equipment is in a state corresponding to the operation of the first driving motor, the switching piece controls the connecting circuit to be in a conducting state, so that the winding of the second driving motor is connected in series with the power circuit; when the electrical equipment is in a state corresponding to the operation of the second driving motor, the switching piece controls the connecting circuit to be in an off state, so that the winding of the second driving motor is disconnected from the power circuit.

For the electrical equipment with the first driving motor and the second driving motor, when the electrical equipment operates the function corresponding to the second driving motor, the power of the controller is low, and the wire inlet reactor is not needed, and when the electrical equipment operates the function corresponding to the first driving motor, the power of the controller is high, and the wire inlet reactor is needed. Therefore, when the whole electrical equipment is in a state corresponding to the operation of the first driving motor, namely the second driving motor does not need to operate, the switching piece controls the connecting circuit to be in a conducting state, and the winding of the second driving motor can be connected into the power circuit in series to serve as the function of the reactor. When the whole machine is in a state corresponding to the operation of the second driving motor, namely the second driving motor needs to operate, the switching piece controls the connecting circuit to be in a disconnected state, namely the winding of the second driving motor can be switched back to a normal circuit, and the normal operation of the second driving motor and the driving components thereof is ensured.

The technical scheme of this application second aspect provides an electrical equipment's motor controller, and this electrical equipment includes first driving motor and second driving motor, and this first driving motor's operating power is greater than this second driving motor's operating power, and this motor controller includes: the first control circuit is electrically connected with the first driving motor and is used for controlling the first driving motor to operate; and a second control circuit electrically connected to the winding of the second drive motor for controlling the winding of the second drive motor to function as a reactor.

The technical scheme of the second aspect of the application provides an electrical equipment's motor controller, including first control circuit and second control circuit for first driving motor's motor controller possesses two control function, and the operation of first driving motor is controlled to one of them function control, and another control function control second driving motor's winding is acted as the reactor. Therefore, when the reactor is needed, the second control circuit is directly utilized to enable the winding of the second driving motor to serve as the reactor, so that an additional reactor is omitted, the structure of the electrical equipment is simplified, the utilization space in the whole machine is saved, the integration level of the electrical equipment can be improved, the installation procedures are reduced, the production efficiency is improved, and the system material cost of the electrical equipment is effectively reduced.

In addition, the motor controller in the above technical solution provided by the present application may further have the following additional technical features:

in the above technical solution, the circuit board includes a power circuit, the power circuit is used for connecting an external power supply; the second control circuit is used for enabling the winding of the second driving motor to be selectively connected to the power circuit.

When the electrical equipment operates main functions, the first driving motor operates, and at the moment, the power of a motor controller is high, and an incoming line reactor is generally needed; and when electrical equipment operates secondary functions, the second driving motor operates, the power of the controller is low at the moment, and an incoming line reactor is generally not needed. Therefore, a second control circuit is additionally arranged on the motor controller of the first driving motor, and the winding of the second driving motor is selectively connected into the power circuit by using the second control circuit, so that the function of the wire inlet reactor can be equivalently realized by using the winding of the second driving motor. This is equivalent to the function integration with the inlet wire reactor in first driving motor's machine controller to saved the inlet wire reactor of extra setting, can effectively improve electrical equipment's integrated level, promote production efficiency, reduce material cost, improve electrical equipment inner space's utilization ratio, for optimizing electrical equipment internal wiring design and structural design bring the facility.

In the above technical solution, the first control circuit is electrically connected to the power circuit; the second control circuit is electrically connected with the power supply circuit and comprises a component switching circuit, the component switching circuit comprises an electric connection part and a switching component arranged on the electric connection part, the electric connection part connects the winding of the second driving motor in series to the power supply circuit, and the switching component is used for controlling the on-off of the electric connection part according to the state of the electrical equipment so as to enable the winding of the second driving motor to be selectively connected in series to the power supply circuit.

The motor controller is connected with an external power supply through a power circuit, so that normal power supply of the motor controller is ensured. Meanwhile, the power circuit, the first control circuit and the second control circuit are integrated on the motor controller, and the first control circuit and the second control circuit are close to the power circuit, so that the wiring design is facilitated, the circuit structure is simplified, and the integration level of the circuit board is improved. The power supply circuit supplies power to the first control circuit, and the first control circuit can control the first driving motor to normally operate. The second control circuit realizes a control function through the component switching circuit, and particularly controls the winding of the second driving motor to be selectively connected into the power circuit in series by controlling the switching component to be switched on or switched off. When the switching component conducts the electric connection part, the winding of the second driving motor is connected in series with the power circuit through the electric connection part; when the switching component breaks the electric connection part, the winding of the second driving motor is disconnected with the power circuit. The scheme has the advantages of ingenious design, low cost and easy popularization.

In the above technical solution, the component switching circuit is specifically configured to: when the electrical equipment is in a state corresponding to the operation of the first driving motor, the switching component controls the electric connection part to be in a conducting state, so that the winding of the second driving motor is connected in series with the power circuit; when the electrical equipment is in a state corresponding to the operation of the second driving motor, the switching component controls the electric connection part to be in a disconnected state, so that the winding of the second driving motor is disconnected with the power circuit.

As described above, for the electrical equipment having the first driving motor and the second driving motor, when the electrical equipment operates the function corresponding to the second driving motor, the controller power is low, and the wire-feeding reactor is not needed, and when the electrical equipment operates the function corresponding to the first driving motor, the controller power is high, and the wire-feeding reactor is needed. Therefore, when the whole electrical equipment is in a state corresponding to the operation of the first driving motor, namely the second driving motor does not need to operate, the switching component controls the electric connection part to be in a conducting state, and the winding of the second driving motor can be connected into the power circuit in series to serve as the function of the reactor. When the whole machine is in a state corresponding to the operation of the second driving motor, namely the second driving motor needs to operate, the switching assembly controls the electric connection part to be in a disconnected state, namely, the winding of the second driving motor can be switched back to a normal circuit, and the normal operation of the second driving motor and the components driven by the second driving motor is ensured.

In the above technical solution, the power supply circuit includes: the alternating current power supply access circuit comprises an alternating current power supply positive end and an alternating current power supply negative end; and the rectifying circuit is connected with the alternating current power supply access circuit and the first control circuit.

The power supply circuit comprises an alternating current power supply access circuit and a rectifying circuit. The positive electrode of the alternating current power supply access circuit is connected with the positive electrode of the alternating current power supply, and the negative electrode of the alternating current power supply is connected with the negative electrode of the alternating current power supply, so that the alternating current power supply can be used for supplying power to the motor controller, the electric equipment can conveniently work by using common municipal alternating current and other power supplies, and the universality of the electric equipment is improved. And the rectifying circuit can convert alternating current into direct current, so that the first control circuit can provide required electric energy according to the operation requirement of the first driving motor, and the operation requirement of the first driving motor is met.

In the above technical solution, the module switching circuit is connected between the positive terminal of the ac power supply and the rectifying circuit, so that the winding of the second driving motor is connected in series between the positive terminal of the ac power supply and the rectifying circuit.

According to the scheme, the winding of the second driving motor can be directly connected in series with the inlet wire of the alternating-current power supply, so that the winding of the second driving motor has the function of serving as an inlet wire reactor. This scheme simple structure, the wiring design of being convenient for.

In the above technical solution, the electrical connection portion includes a first connection line and a second connection line, and the switching assembly includes: the first switching piece is connected between the positive end of the alternating current power supply and the rectifying circuit in series and used for controlling the connection and disconnection between the positive end of the alternating current power supply and the rectifying circuit, and two ends of the first switching piece are respectively connected with one end of the first connecting circuit and one end of the second connecting circuit; the second switching piece is connected to the other end of the first connecting circuit and used for controlling a phase winding of the second driving motor to be conducted with the first connecting circuit or a second inverter circuit of the second driving motor; and the third switching piece is connected to the other end of the second connecting circuit and used for controlling the conduction of the other phase winding of the second driving motor and the second connecting circuit or the conduction of the other phase winding of the second driving motor and a second inverter circuit of the second driving motor.

The scheme specifically utilizes the three switching pieces and the two connecting circuits to realize that the winding of the second driving motor is selectively connected in series with the power circuit. Specifically, when the complete machine is in the state that first driving motor operation corresponds, direct intercommunication between first switching part disconnection alternating current power supply positive terminal and the rectifier circuit, second switching part control second driving motor's a phase winding switches on with first connecting circuit, another phase winding and the second connecting circuit of third switching part control second driving motor switch on, then alternating current power supply positive terminal, first connecting circuit, a phase winding of second driving motor, another phase winding of second driving motor, second connecting circuit switches on in order, then connect rectifier circuit, promptly: the winding of the second driving motor is connected between the positive end of the alternating current power supply and the rectifying circuit in series. When the whole machine is in a state corresponding to the operation of the second driving motor, the first switching piece controls the positive end of the alternating current power supply and the rectifying circuit to be in a direct connection state, the second switching piece controls one phase winding of the second driving motor to be conducted with a second inverter circuit of the second driving motor, the third switching piece controls the other phase winding of the second driving motor to be conducted with the second inverter circuit of the second driving motor, the winding of the second driving motor is disconnected with the power circuit, and the winding of the second driving motor is switched back to a normal circuit of the second driving motor, so that the normal operation of the second driving motor and parts driven by the second driving motor is guaranteed.

In the above technical solution, the component switching circuit is connected to the dc bus rectified by the rectifier circuit, so that the winding of the second driving motor is connected in series to the dc bus.

According to the scheme, the winding of the second driving motor can be connected in series with the direct current bus rectified by the rectifying circuit, so that the winding of the second driving motor can also be connected in series with the direct current bus rectified by the rectifying circuit, the winding of the second driving motor is also connected in series with an alternating current power supply inlet wire, and the winding of the second driving motor serves as a function of an inlet wire reactor. Therefore, the technical personnel can conveniently and reasonably design the circuit board according to factors such as specific shape, size and layout of the circuit board, other structures of electrical equipment and the like so as to optimize the structure and performance of the circuit board.

In the above technical solution, the rectifier circuit includes: the rectification main circuit is connected with the alternating current power supply access circuit; and the filter circuit is connected with the main rectifier circuit and the first control circuit, and the direct current bus is connected between the main rectifier circuit and the filter circuit.

The rectification circuit comprises a rectification main circuit and a filter circuit, the rectification main circuit converts alternating current into direct current, and the filter circuit filters out ripples in the rectified output voltage, so that the voltage supplied to the first control circuit is more stable. Meanwhile, the direct current bus is positioned between the rectification circuit and the filter circuit, and the component switching circuit can be connected between the rectification main circuit and the filter circuit, so that the influence on the operation of the filter circuit and a subsequent first control circuit after the winding of the second driving motor is connected in series is prevented.

In the above technical solution, the dc bus includes a dc positive bus; the component switching circuit is connected to the direct current positive bus, so that the winding of the second driving motor is connected to the direct current positive bus in series.

The direct current positive bus is directly connected with the component switching circuit, so that the winding of the second driving motor can be connected in series with the rectified direct current positive bus, and the winding of the second driving motor can equivalently realize the function of the wire inlet electric controller.

In the above technical solution, the electrical connection portion includes a third connection line and a fourth connection line, and the switching assembly includes: the fourth switching piece is connected to the direct current positive bus and used for controlling the on-off between the direct current positive bus and the filter circuit, and two ends of the fourth switching piece are respectively connected with one end of the third connecting line and one end of the fourth connecting line; the fifth switching piece is connected to the other end of the third connecting line and used for controlling a phase winding of the second driving motor to be conducted with the third connecting line or with a second inverter circuit of the second driving motor; and the sixth switching piece is connected to the other end of the fourth connecting line and used for controlling the conduction of the other phase winding of the second driving motor and the fourth connecting line or the conduction of the other phase winding of the second driving motor and a second inverter circuit of the second driving motor.

The scheme specifically utilizes the three switching pieces and the two connecting circuits to realize that the winding of the second driving motor is selectively connected in series with the power circuit. Specifically, when the complete machine is in the state that first driving motor operation corresponds, the direct intercommunication between positive bus of fourth switching part disconnection direct current and the filter circuit, a phase winding and the third connecting circuit of fifth switching part control second driving motor switch on, another phase winding and the fourth connecting circuit of sixth switching part control second driving motor switch on, then alternating current power supply positive terminal, the rectification main circuit, the positive bus of direct current, the third connecting circuit, a phase winding of second driving motor, another phase winding of second driving motor, the fourth connecting circuit switches on in order, then connect filter circuit, promptly: the winding of the second driving motor is connected to the direct current positive bus. When the whole machine is in a state corresponding to the operation of the second driving motor, the fourth switching piece is used for conducting direct communication between the direct current positive bus and the filter circuit, the fifth switching piece is used for controlling one phase winding of the second driving motor to be conducted with a second inverter circuit of the second driving motor, the sixth switching piece is used for controlling the other phase winding of the second driving motor to be conducted with the second inverter circuit of the second driving motor, then the winding of the second driving motor is disconnected with the power circuit, and the winding of the second driving motor is switched back to a normal circuit of the second driving motor, so that the normal operation of the second driving motor and the driving components thereof is ensured.

In the above technical solution, the motor controller further includes a second inverter circuit electrically connected to a winding of the second driving motor; the first control circuit comprises a first inverter circuit, and the second inverter circuit is connected with the first inverter circuit in parallel; the rectification circuit is also connected with the second inverter circuit; the switching component comprises a seventh switching piece, and the seventh switching piece is connected to the direct current positive bus and is used for controlling the direct current positive bus to be conducted with the winding of the second driving motor or directly conducted with the filter circuit.

In this scheme, second inverter circuit and first inverter circuit sharing rectifier circuit, then need not additionally to set up rectifier circuit for second driving motor, therefore improved motor controller's integrated level, reduced product cost. The scheme specifically utilizes a switching piece and a connecting circuit to realize that the winding of the second driving motor is selectively connected in series with the power circuit, thereby being beneficial to reducing the cost. Specifically, when the complete machine is in the state that first driving motor operation corresponds, the seventh switching piece control direct current positive bus switches on with second driving motor's winding, and then alternating current power supply positive terminal, rectification main circuit, direct current positive bus, interconnecting link, the neutral point of second driving motor's winding, the last pipe freewheeling diode of second inverter circuit's H bridge switch on in order, then connect first inverter circuit, promptly: the winding of the second driving motor is connected to the direct current positive bus. When the whole machine is in a state corresponding to the operation of the second driving motor, the seventh switching piece controls the direct-current positive bus to be directly communicated with the filter circuit, the winding of the second driving motor is disconnected with the power circuit, and the winding of the second driving motor is switched back to the normal circuit of the second driving motor, so that the normal operation of the second driving motor and the driving components thereof is ensured.

In the above technical solution, the dc bus includes a dc negative bus; the component switching circuit is connected to the direct current negative bus, so that the winding of the second driving motor is connected to the direct current negative bus in series.

The direct current negative bus is directly connected with the component switching circuit, so that the winding of the second driving motor can be connected in series with the rectified direct current negative bus, and the direct current negative bus and the direct current positive bus belong to a loop, so that the winding of the second driving motor can be equivalently used for realizing the function of a wire inlet electric controller.

In the above technical solution, the electrical connection portion includes a fifth connection line and a sixth connection line, and the switching assembly includes: the eighth switching piece is connected to the direct current negative bus and used for controlling the on-off between the direct current negative bus and the filter circuit, and two ends of the eighth switching piece are respectively connected with one end of the fifth connecting line and one end of the sixth connecting line; a ninth switching element, connected to the other end of the fifth connection line, for controlling a phase winding of the second driving motor to be conducted with the fifth connection line or with a second inverter circuit of the second driving motor; and the tenth switching piece is connected to the other end of the sixth connecting line and used for controlling the conduction of the other phase winding of the second driving motor and the sixth connecting line or the conduction of the other phase winding of the second driving motor and a second inverter circuit of the second driving motor.

The scheme specifically utilizes the three switching pieces and the two connecting circuits to realize that the winding of the second driving motor is selectively connected in series with the power circuit. Specifically, when the complete machine is in the state that first driving motor operation corresponds, the eighth switching part breaks direct intercommunication between direct current negative bus and the filter circuit, a phase winding and the fifth connecting circuit of ninth switching part control second driving motor switch on, another phase winding and the sixth connecting circuit of tenth switching part control second driving motor switch on, then filter circuit, fifth connecting circuit, a phase winding of second driving motor, another phase winding of second driving motor, the sixth connecting circuit, the rectification main circuit, alternating current power supply negative pole end switches on in order, promptly: the winding of the second driving motor is connected to the direct current negative bus. When the whole machine is in a state corresponding to the operation of the second driving motor, the eighth switching piece is used for conducting direct communication between the direct-current negative bus and the filter circuit, the ninth switching piece is used for controlling one phase winding of the second driving motor to be conducted with a second inverter circuit of the second driving motor, the tenth switching piece is used for controlling the other phase winding of the second driving motor to be conducted with the second inverter circuit of the second driving motor, then the winding of the second driving motor is disconnected with the power circuit, and the winding of the second driving motor is switched back to a normal circuit of the second driving motor, so that the normal operation of the second driving motor and the driving components thereof is ensured.

In the above technical solution, the motor controller further includes a second inverter circuit electrically connected to a winding of the second driving motor; the first control circuit comprises a first inverter circuit, and the second inverter circuit is connected with the first inverter circuit in parallel; the rectification circuit is also connected with the second inverter circuit; the switching component comprises an eleventh switching piece, and the eleventh switching piece is connected to the direct current negative bus and is used for controlling the direct current negative bus to be conducted with the winding of the second driving motor or directly conducted with the filter circuit.

In this scheme, second inverter circuit and first inverter circuit sharing rectifier circuit, then need not additionally to set up rectifier circuit for second driving motor, therefore improved motor controller's integrated level, reduced product cost. The scheme specifically utilizes a switching piece and a connecting circuit to realize that the winding of the second driving motor is selectively connected in series with the power circuit, thereby being beneficial to reducing the cost. Specifically, when the complete machine is in a state corresponding to the operation of the first driving motor, the eleventh switching part controls the direct-current negative bus to be conducted with the winding of the second driving motor, and then the filter circuit, the lower tube freewheeling diode of the H-bridge on the second inverter circuit, the winding of the second driving motor, the neutral point of the winding of the second driving motor, the connection circuit, the rectifier main circuit, and the negative end of the alternating-current power supply are sequentially conducted, that is: the winding of the second driving motor is connected to the direct current negative bus. When the whole machine is in a state corresponding to the operation of the second driving motor, the eleventh switching piece controls the direct-current negative bus to be directly communicated with the filter circuit, the winding of the second driving motor is disconnected with the power circuit, and the winding of the second driving motor is switched back to a normal circuit of the second driving motor, so that the normal operation of the second driving motor and the driving components thereof is ensured.

In any of the above solutions, the switching assembly includes at least one switching piece, and the kind of the switching piece includes at least one of a switching element and a relay.

The switching component is mainly used for realizing the connection and disconnection among the power circuit, the electric connection part and the winding of the second driving motor through the opening and closing. Therefore, common switching elements, relays, and the like can satisfy the requirement.

A technical solution of a third aspect of the present application provides an electric machine apparatus, including: a motor controller of an electrical apparatus according to any one of the first and second aspects; and the first driving motor is electrically connected with a first control circuit of the motor controller.

The motor apparatus of an electrical device provided in the third aspect of the present application includes the motor controller of the electrical device according to any one of the first aspect of the present application and the second aspect of the present application, so that all the beneficial effects of any one of the foregoing technical solutions are achieved, and details are not repeated herein.

In the above technical solution, the first driving motor includes a housing, the housing includes a rear end cover, and the motor controller is fixed to the rear end cover.

Fix motor controller on first driving motor's rear end cover, both be convenient for circuit board and first driving motor wiring, be convenient for again to play the guard action to motor controller, prevent that motor controller from taking place the condition such as friction and causing the interference to motor controller.

A technical solution of a fourth aspect of the present application provides an electrical apparatus, including: the motor device of the electric appliance according to any one of the third aspect of the present invention; and a second drive motor, the winding of which is electrically connected to a second control circuit of the motor arrangement.

The electric device provided by the technical solution of the fourth aspect of the present application includes the motor device according to any one of the technical solutions of the third aspect, so that all the advantages of any one of the technical solutions are achieved, and details are not repeated herein.

In the above technical solution, the electrical equipment includes a main control board, and the main control board is electrically connected to a power circuit of the motor device.

The main control board of the electrical equipment is used for supplying power to the motor controller, namely the main control board serves as an external power supply of the motor controller, a power supply does not need to be additionally configured for the motor controller, and the wiring structure of the electrical equipment is favorably simplified.

In the above technical solution, the main control board communicates with the motor controller of the motor device through the communication device, issues an instruction to the motor controller through the communication device, and receives information fed back by the motor controller.

The scheme utilizes the main control board to supply power for the motor controller and the first driving motor, issues a motor operation instruction in a communication mode, receives information such as motor speed and temperature fed back by the motor controller, and controls the switching component of the second control circuit according to the state of the whole machine. Wherein the communication device may be, but is not limited to, a cable assembly.

In the above technical solution, the second driving motor includes a two-phase motor; or the second drive motor comprises a three-phase motor.

The second driving motor adopts a two-phase motor or a three-phase motor, can meet the operation of a fan and the function of a reactor, and has simple structure and lower cost.

In any of the above technical solutions, the electrical equipment includes a drum washing machine, the first driving motor of the motor device includes a drum motor, and the second driving motor includes a fan motor; or the electrical equipment comprises an air conditioner, the first driving motor of the motor device comprises a compressor motor, and the second driving motor comprises a fan motor; or the electrical equipment comprises a water heater, the first driving motor of the motor device comprises a compressor motor, and the second driving motor comprises a fan motor; or the electrical appliance comprises a refrigerator, the first drive motor of the motor arrangement comprises a compressor motor, and the second drive motor comprises a fan motor.

Of course, the electric appliance is not limited to the drum washing machine, the air conditioner, the water heater, and the refrigerator, and may be other electric appliances having two or more motors.

Additional aspects and advantages of the present application will be set forth in part in the description which follows, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 2 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 3 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 4 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 5 is a schematic block diagram of a motor controller according to one embodiment of the present application;

FIG. 6 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 7 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 8 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 9 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 10 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 11 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 12 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 13 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 14 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 15 is a hardware block diagram of an electrical device according to an embodiment of the present application;

FIG. 16 is a schematic block diagram of a motor controller according to one embodiment of the present application;

FIG. 17 is a schematic block diagram of an electromechanical machine according to one embodiment of the present application;

FIG. 18 is a schematic block diagram of an electromechanical machine according to one embodiment of the present application;

FIG. 19 is a schematic block diagram of an electrical device according to one embodiment of the present application;

FIG. 20 is a schematic block diagram of an electrical device according to one embodiment of the present application;

FIG. 21 is a schematic structural view of a drum washing machine according to some embodiments of the present application;

fig. 22 is a schematic structural view of an electromechanical device according to some embodiments of the present application.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 22 is:

1: a motor controller; 10: a circuit board; 102: a first control circuit; 1024: a filter circuit; 1026: a first inverter circuit; 104: a second control circuit; 1042: a component switching circuit; 1044: a switching component; 1046: an electrical connection portion; 1050: a switching member; 1051: a first switching member; 1052: a second switching member; 1053: a third switching member; 1054: a fourth switching member; 1055: a fifth switching member; 1056: a sixth switching member; 1057: a seventh switching member; 1058: an eighth switching member; 1059: a ninth switching member; 1060: a tenth switching member; 1061: an eleventh switching member; 1070: connecting a line; 1071: a first connection line; 1072: a second connection line; 1073: a third connection line; 1074: a fourth connection line; 1075: a fifth connection line; 1076: a sixth connection line; 108: a power supply circuit; 1082: an AC power supply access circuit; 1084: the positive pole terminal of the alternating current power supply; 1086: a negative terminal of an alternating current power supply; 1088: a main rectifier circuit; 1090: a direct current positive bus; 1092: a direct current negative bus; 1094: a direct current bus; 1096: a rectifying circuit;

2: a first drive motor; 220: a housing; 204: a rear end cap;

3: a second drive motor; 32a, 32b, 32 c: a winding;

4: a second inverter circuit; 42: an IGBT; 44: an upper tube freewheeling diode; 46: a down tube freewheeling diode;

100: a motor device;

200: an electrical device; 202: a main control board;

300: a drum washing machine; 302: a box body; 304: a throwing port; 306: a door; 308: an outer cylinder; 310: a drum motor; 312: a rotating shaft; 314: a drum; 318: a through hole; 319: lifting the ribs; 320: a water supply valve; 324: a water injection box; 326: a water injection port; 328: a drain pipe; 330: a drain valve; 334: a main air duct; 336: a front air duct; 338: a fan housing; 340: an air suction port; 342: an exhaust port; 344: a fan motor; 346: a fan rotating shaft; 348: a fan; 350: and a rear air duct.

Detailed Description

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

A motor controller of an electric appliance, a motor apparatus of an electric appliance, and an electric appliance according to some embodiments of the present application are described below with reference to fig. 1 to 22.

An embodiment of the first aspect of the present application provides a motor controller 1 for an electrical apparatus, where the electrical apparatus includes a first driving motor 2 and a second driving motor 3. The operating power of the first drive motor 2 is greater than the operating power of the second drive motor 3. The first drive motor 2 and the second drive motor 3 are operated at different times. In other words, the first drive motor 2 and the second drive motor 3 do not operate simultaneously.

Specifically, as shown in fig. 5, the motor controller 1 includes: a first control circuit 102 and a second control circuit 104. The first control circuit 102 is electrically connected to the first driving motor 2 and the second driving motor 3, and is configured to control the first driving motor 2 and the second driving motor 3 to operate. The second control circuit 104 is electrically connected to the windings (32a, 32b, 32c) of the second drive motor 3 for controlling the windings (32a, 32b, 32c) of the second drive motor 3 to function as a reactor.

The motor controller 1 of the electrical equipment provided by the embodiment of the first aspect of the present application includes a first control circuit 102 and a second control circuit 104, and the first control circuit 102 is electrically connected to both the first driving motor 2 and the second driving motor 3, so that the motor controller 1 of the first driving motor 2 has three control functions, one of which controls the first driving motor 2 to operate, the other of which controls the second driving motor 3 to operate, and the other of which controls the windings (32a, 32b, 32c) of the second driving motor 3 to act as a reactor. In this way, when a reactor is needed, the second control circuit 104 is directly utilized to enable the windings (32a, 32b, 32c) of the second driving motor 3 to serve as the reactor, so that an additional reactor is omitted, the structure of the electrical equipment is simplified, the utilization space in the whole machine is saved, the integration level of the electrical equipment can be improved, the installation procedures are reduced, the production efficiency is improved, and the system material cost of the electrical equipment is effectively reduced.

In other words, the control circuit of the first driving motor 2 and the control circuit of the second driving motor 3 are integrated, so that a controller does not need to be additionally arranged on the second driving motor 3, and the integration level of the electrical equipment is improved; and the first driving motor 2 and the second driving motor 3 can share certain hardware structures (such as a shared rectifying circuit), so that the number of components of the electrical equipment can be reduced, and the circuit layout of the electrical equipment is simplified. Meanwhile, the motor controller 1 is additionally provided with the second control circuit 104, so that windings (32a, 32b and 32c) of the second driving motor 3 can serve as reactors, reactors additionally arranged in electrical equipment are omitted, the number of parts is further reduced, the structure of the whole machine is simplified, the internal space of the whole machine is saved, the cost is reduced, the mounting process is simplified, and the production efficiency is improved.

It should be noted that, in the present application, the number of phases of the winding of the second drive motor 3 is not limited to three or two phases in the drawings, and may be one or four or more phases. Further, the specific number of phases in the winding connection circuit of the second drive motor 3 that function as a reactor is also not limited, and for example, only the two-phase winding connection circuit of the three-phase winding functions as a reactor, or the two-phase winding connection circuit functions as a reactor. As long as the second drive motor 3 has a winding access circuit acting as an inductance, it can act as a reactor.

Some embodiments are described below in conjunction with fig. 1-4.

Example one

The motor controller 1 includes a power supply circuit 108, as shown in fig. 1. The power supply circuit 108 is used for connecting an external power supply. The second control circuit 104 is used to selectively connect the windings (32a, 32b, 32c) of the second drive motor 3 to the power circuit 108.

When the electrical equipment runs main functions, the first driving motor 2 runs, and at the moment, the power of the motor controller 1 is high, and a wire-inlet electric reactor is generally needed; and when electrical equipment operates the secondary function, the second driving motor 3 operates, and at the moment, the power of the controller is low, and an incoming line reactor is generally not needed. Therefore, the motor controller 1 is additionally provided with the second control circuit 104, and the windings (32a, 32b, 32c) of the second driving motor 3 are selectively connected to the power supply circuit 108 by the second control circuit 104, that is, the windings (32a, 32b, 32c) of the second driving motor 3 can equivalently realize the function of the line-feeding reactor.

This is equivalent to the function integration with the inlet wire reactor in motor controller 1 to saved the inlet wire reactor of extra setting, can effectively improve electrical equipment's integrated level, promoted production efficiency, reduced material cost, improved electrical equipment inner space's utilization ratio, for optimizing electrical equipment inner wiring design and structural design bring the facility.

Of course, the windings (32a, 32b, 32c) of the second drive motor 3 can also be connected all the way into the power supply circuit 108, i.e.: and not selectively accessing the power circuit 108. In this way, when the first drive motor 2 is operated and the second drive motor 3 is not operated, the windings (32a, 32b, 32c) of the second drive motor 3 act as an incoming line reactor; when the first driving motor 2 runs and the second driving motor 3 also runs, windings (32a, 32b and 32c) of the second driving motor 3 participate in a normal circuit of the second driving motor 3 to ensure the normal running of the second driving motor 3, and meanwhile, a power circuit 108 is connected to serve as an incoming line reactor; when the first drive motor 2 is not operated and the second drive motor 3 is operated, the windings (32a, 32b, 32c) of the second drive motor 3 only participate in the normal circuit of the second drive motor 3, ensuring the normal operation of the second drive motor 3.

Further, the first control circuit 102 is electrically connected to the power supply circuit 108.

The second control circuit 104 is electrically connected to the power supply circuit 108, and the second control circuit 104 includes a module switching circuit 1042. The component switching circuit 1042 includes a connection line 1070 and a switching element 1050 provided on the connection line 1070.

The connection 1070 connects the windings (32a, 32b, 32c) of the second drive motor 3 in series to the power supply circuit 108.

The switching element 1050 is used to control the connection 1070 to be turned on or off according to the state of the electric device, so that the windings (32a, 32b, 32c) of the second driving motor 3 are selectively connected in series to the power circuit 108.

The motor controller 1 is connected with an external power supply through the power circuit 108, so that normal power supply of the motor controller 1 is ensured. Meanwhile, the power circuit 108, the first control circuit 102 and the second control circuit 104 are integrated on the motor controller 1, and the first control circuit 102 and the second control circuit 104 are close to the power circuit 108, so that the wiring design is facilitated, the circuit structure is simplified, and the integration level of the circuit board 10 of the motor controller 1 is improved. The power circuit 108 supplies power to the first control circuit 102, and ensures that the first control circuit 102 can control the first driving motor 2 and the second driving motor 3 to operate normally. The second control circuit 104 implements a control function through the module switching circuit 1042, and controls the windings (32a, 32b, 32c) of the second driving motor 3 to be selectively connected in series to the power circuit 108 by controlling the switch 1050 to be closed or opened.

When the switching element 1050 switches on the connection line 1070, the windings (32a, 32b, 32c) of the second drive motor 3 are connected in series to the power circuit 108 via the connection line 1070. When the switching member 1050 disconnects the connection wire 1070, the windings (32a, 32b, 32c) of the second drive motor 3 are disconnected from the power supply circuit 108. The scheme has the advantages of ingenious design, low cost and easy popularization.

The module switching circuit 1042 is specifically configured to: when the electrical equipment is in a state corresponding to the operation of the first driving motor 2, the switching element 1050 controls the connection line 1070 to be in a conducting state, so that the windings (32a, 32b, 32c) of the second driving motor 3 are connected in series to the power circuit 108. When the electric appliance is in a state corresponding to the operation of the second drive motor 3, the switching member 1050 controls the connection line 1070 to be in the open state to disconnect the windings (32a, 32b, 32c) of the second drive motor 3 from the power supply circuit 108.

For the electrical equipment with the first driving motor 2 and the second driving motor 3, when the electrical equipment operates the function corresponding to the second driving motor 3, the controller power is low, and the wire-feeding reactor is not needed, and when the electrical equipment operates the function corresponding to the first driving motor 2, the controller power is high, and the wire-feeding reactor is needed. Therefore, when the electrical equipment complete machine is in a state corresponding to the operation of the first driving motor 2, that is, the second driving motor 3 does not need to operate, the switching member 1050 controls the connection line 1070 to be in a conducting state, that is, the windings (32a, 32b, 32c) of the second driving motor 3 can be connected in series to the power circuit 108, and the electrical equipment complete machine functions as a reactor. When the complete machine is in a state corresponding to the operation of the second driving motor 3, that is, the second driving motor 3 needs to operate, the switching element 1050 controls the connection line 1070 to be in an open state, that is, the windings (32a, 32b, 32c) of the second driving motor 3 can be switched back to a normal circuit, so as to ensure the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

The switching element 1050 may have only one closed state, such as a single-pole single-throw switch, and only controls the on/off of one line. The switch 1050 may also have multiple closed states, such as a single-pole double-throw switch, and the multiple lines can be selectively switched by selecting a specific closed state.

It should be noted that the operation mode and the switching between the operation modes of the electrical appliance 200 are generally written in a computer program, and the processor executes the computer program to control each hardware component to execute the corresponding action. Therefore, in this embodiment, the specific operation timing of the switching element 1050 can be written into the computer program of the electrical apparatus 200, and the switching operation is performed automatically in accordance with the state of the whole apparatus.

Such as: when the electrical apparatus 200 is to operate the first driving motor 2 to operate the corresponding mode, the switching element 1050 sets a time (e.g., 3 seconds, 5 seconds, etc.) in advance to operate, and the connection line 1070 is turned on, so that the windings (32a, 32b, 32c) of the second driving motor 3 are connected in series to the power circuit 108, thereby ensuring that the subsequent first driving motor 2 can operate normally.

When the electrical apparatus 200 is to be switched to the mode corresponding to the operation of the second driving motor 3, the switching element 1050 is operated for a predetermined time (e.g. 3 seconds, 5 seconds, etc.), and the connection line 1070 is disconnected, so that the windings (32a, 32b, 32c) of the second driving motor 3 are disconnected from the power circuit 108, thereby ensuring that the subsequent second driving motor 3 can operate normally.

Further, as shown in fig. 1, the first control circuit 102 includes: a first inverter circuit 1026 and a second inverter circuit 4. The first inverter circuit 1026 is electrically connected to the first drive motor 2. The second inverter circuit 4 is electrically connected to the second driving motor 3, and the second inverter circuit 4 is connected in parallel to the first inverter circuit 1026.

The first control circuit 102 includes a first inverter circuit 1026 and a second inverter circuit 4, and the first inverter circuit 1026 and the second inverter circuit 4 are connected in parallel, so as to share a rectifier circuit, and no rectifier circuit needs to be additionally arranged for the second driving motor 3, thereby improving the integration level of the motor controller 1 and reducing the product cost. The first inverter circuit 1026 can adjust the voltage to the voltage suitable for the operation of the first driving motor 2, and the second inverter circuit 4 can adjust the voltage to the voltage suitable for the operation of the second driving motor 3, thereby ensuring the normal operation of the first driving motor 2 and the second driving motor 3.

Of course, the first control circuit 102 may also include other circuit structures for controlling the operations of the first driving motor 2 and the second driving motor 3.

Specifically, as shown in fig. 1, the power supply circuit 108 includes: a main rectifier circuit 1088 and a filter circuit 1024. The main rectifier circuit 1088 is used for connecting an external power source. The filter circuit 1024 connects the main rectifier circuit 1088 and the first control circuit 102.

A dc bus 1094 is connected between the rectifier main circuit 1088 and the filter circuit 1024, and the component switching circuit 1042 is connected to the dc bus 1094 such that the windings (32a, 32b, and 32c) of the second drive motor 3 are connected in series to the dc bus 1094.

According to the scheme, the windings (32a, 32b and 32c) of the second driving motor 3 can be connected in series to the direct current bus 1094 rectified by the rectifying circuit, so that the windings (32a, 32b and 32c) of the second driving motor 3 can also be connected in series to the direct current bus 1094 rectified by the rectifying circuit, the windings (32a, 32b and 32c) of the second driving motor 3 are connected in series to an alternating current power supply inlet wire, and the windings (32a, 32b and 32c) of the second driving motor 3 have the function of serving as an inlet wire reactor. Therefore, the design method is convenient for technicians to reasonably design according to factors such as specific shape, size and layout of the circuit board 10 and other structures of electrical equipment, and the like so as to optimize the structure and performance of the circuit board 10.

More specifically, the power circuit 108 includes a rectifier main circuit 1088 and a filter circuit 1024. The rectifier main circuit 1088 can convert alternating current into direct current, can utilize alternating current power supply to supply power for the motor controller 1 like this, and electrical equipment of being convenient for utilizes power work such as common municipal alternating current, improves electrical equipment's universality. The filter circuit 1024 filters out ripples in the rectified output voltage, so that the voltage supplied to the first control circuit 102 is more stable, the first control circuit 102 can provide required electric energy according to the operation requirements of the first driving motor 2 and the second driving motor 3, and the operation requirements of the first driving motor 2 and the second driving motor 3 are met.

Meanwhile, the dc bus 1094 is located between the main rectifier circuit 1088 and the filter circuit 1024, so the component switching circuit 1042 can be connected between the main rectifier circuit 1088 and the filter circuit 1024 to prevent the windings (32a, 32b, 32c) of the second driving motor 3 from affecting the operation of the filter circuit 1024 and the subsequent first control circuit 102 after being connected in series.

Further, the dc bus 1094 includes a dc positive bus 1090. As shown in fig. 1, the switching unit 1050 is connected to the dc positive bus 1090, and is used to control the dc positive bus 1090 to be conducted with the windings (32a, 32b, 32c) of the second driving motor 3 or directly conducted with the filter circuit 1024.

The second inverter circuit 4 and the first inverter circuit 1026 share a rectifier circuit, and thus a rectifier circuit does not need to be additionally arranged for the second driving motor 3, thereby improving the integration level of the motor controller 1 and reducing the product cost. The scheme specifically utilizes a switching piece 1050 and a connecting line 1070 to realize that the windings (32a, 32b, 32c) of the second driving motor 3 are selectively connected in series with the power circuit 108, which is beneficial to reducing the cost.

Specifically, the component switching circuit 1042 may be connected on the direct current positive bus 1090. When the complete machine is in a state corresponding to the operation of the first driving motor 2, all IGBTs 42 of the second inverter circuit 4 are turned off (IGBTs, Insulated Gate Bipolar transistors can be understood as switching elements), the switching element 1050 controls the direct current positive bus 1090 and the windings (32a, 32b, 32c) of the second driving motor 3 to be conducted, and then the rectifier main circuit 1088, the direct current positive bus 1090, the connection circuit 1070, the neutral point of the windings (32a, 32b, 32c) of the second driving motor 3, and the upper tube freewheeling diode 44 of the H-bridge of the second inverter circuit 4 are sequentially conducted, and then connected to the first inverter circuit 1026, that is: the connection of the windings (32a, 32b, 32c) of the second drive motor 3 to the direct current positive busbar 1090 is achieved. When the whole machine is in a state corresponding to the operation of the second driving motor 3, the switching component 1050 controls the direct current positive bus 1090 to be directly communicated with the filter circuit 1024, so that the windings (32a, 32b and 32c) of the second driving motor 3 are disconnected from the power circuit 108, and the windings (32a, 32b and 32c) of the second driving motor 3 are switched back to the normal circuit of the second driving motor 3, thereby ensuring the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

More specifically, the second drive motor 3 is a three-phase motor including three sets of windings (32a, 32b, 32 c). The second inverter circuit 4 is configured by three-phase bridging of 6 IGBTs 42 (switching elements), and a freewheeling diode is connected between the collector and emitter of each IGBT 42, that is: three upper tube freewheeling diodes 44 on the upper-arm side and three lower tube freewheeling diodes 46 on the lower-arm side. Each phase output terminal of the second inverter circuit 4 is connected to each phase winding of the second drive motor 3. The configuration of the first inverter circuit 1026 and the connection manner with the winding of the first driving motor 2 are the same, and are not described again.

The switching element 1050 is a single-pole double-throw switch, the fixed contact is connected with the direct-current positive bus 1090, the two moving contacts are respectively connected with the filter circuit 1024 and one end of the connecting line 1070, and the other end of the connecting line 1070 is connected with the windings (32a, 32b and 32c) of the second driving motor 3. The positive and negative poles of the second inverter circuit 4 are respectively connected with the positive and negative poles filtered by the filter circuit 1024.

When the complete machine is in a state corresponding to the operation of the first driving motor 2, the switching member 1050 closes the movable contact connected to the connection line 1070.

When the complete machine is in a state corresponding to the operation of the second driving motor 3, the switching member 1050 is closed to the movable contact connected to the filter circuit 1024.

Example two

The difference from the first embodiment is that: the dc bus 1094 includes a dc negative bus 1092. As shown in fig. 2, the switching element 1050 is connected to the negative dc bus 1092, and is used to control the negative dc bus 1092 to be conducted with the windings (32a, 32b, 32c) of the second driving motor 3 or directly conducted with the filter circuit 1024.

The module switching circuit 1042 may also be connected to the dc negative bus 1092. When the complete machine is in a state corresponding to the operation of the first driving motor 2, all IGBTs 42 of the second inverter circuit 4 are turned off, and the switching element 1050 controls the dc negative bus 1092 to be conducted with the windings (32a, 32b, 32c) of the second driving motor 3, so that the filter circuit 1024, the lower tube freewheeling diode 46 of the H-bridge of the second inverter circuit 4, the windings (32a, 32b, 32c) of the second driving motor 3, the neutral point of the windings (32a, 32b, 32c) of the second driving motor 3, the connection line 1070, the dc negative bus 1092, and the main rectifier circuit are sequentially conducted, that is: it is achieved that the windings (32a, 32b, 32c) of the second drive motor 3 are connected to the negative dc busbar 1092. When the complete machine is in a state corresponding to the operation of the second driving motor 3, the switching element 1050 controls the direct-current negative bus 1092 to be directly communicated with the filter circuit 1024, so that the windings (32a, 32b, and 32c) of the second driving motor 3 are disconnected from the power circuit, and the windings (32a, 32b, and 32c) of the second driving motor 3 are switched back to the normal circuit of the second driving motor 3, thereby ensuring the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

More specifically, the second drive motor 3 is a three-phase motor including three sets of windings (32a, 32b, 32 c). The second inverter circuit is configured by three-phase bridging of 6 IGBTs 42 (switching elements), and a freewheeling diode is connected between the collector and emitter of each IGBT 42, that is: three upper tube freewheeling diodes 44 on the upper-arm side and three lower tube freewheeling diodes 46 on the lower-arm side. Each phase output terminal of the second inverter circuit 4 is connected to each phase winding of the second drive motor.

The switching element 1050 is a single-pole double-throw switch, a fixed contact is connected with the direct-current negative bus 1092, two moving contacts are respectively connected with the filter circuit 1024 and one end of the connecting line 1070, and the other end of the connecting line 1070 is connected with the windings (32a, 32b, 32c) of the second driving motor 3. The positive and negative poles of the second inverter circuit 4 are respectively connected with the positive and negative poles filtered by the filter circuit 1024.

EXAMPLE III

As shown in fig. 3, the difference from the first embodiment is that: the second drive motor 3 is a two-phase motor comprising two sets of windings (32a, 32 b). The second inverter circuit 4 is configured by two-phase bridging of four IGBTs 42 (switching elements), and a freewheeling diode is connected between the collector and emitter of each IGBT 42, that is: two upper tube freewheeling diodes 44 on the upper-arm side and two lower tube freewheeling diodes 46 on the lower-arm side. Each phase output terminal of the second inverter circuit 4 is connected to each phase winding of the second drive motor 3.

The working principle is basically the same as that of the first embodiment, and the description is omitted here.

Example four

As shown in fig. 4, the difference from the second embodiment is that: the second drive motor 3 is a two-phase motor comprising two sets of windings (32a, 32 b). The second inverter circuit 4 is configured by two-phase bridging of four IGBTs 42 (switching elements), and a freewheeling diode is connected between the collector and emitter of each IGBT 42, that is: two upper tube freewheeling diodes 44 on the upper-arm side and two lower tube freewheeling diodes 46 on the lower-arm side. The respective phase output terminals of the second inverter circuit 4 are connected to the respective phase windings (32a, 32b) of the second drive motor 3.

The working principle is basically the same as that of the second embodiment, and the description is omitted here.

In the motor controller 1 of the electrical apparatus 200 according to the embodiment of the second aspect of the present application, the electrical apparatus 200 includes the first drive motor 2 and the second drive motor 3. The operating power of the first drive motor 2 is greater than the operating power of the second drive motor 3. The first drive motor 2 and the second drive motor 3 are operated at different times. In other words, the first drive motor 2 and the second drive motor 3 do not operate simultaneously.

Specifically, the motor controller 1 includes: a first control circuit 102 and a second control circuit 104, as shown in fig. 16. The first control circuit 102 is electrically connected to the first driving motor 2, and is configured to control the operation of the first driving motor 2. The second control circuit 104 is electrically connected to the windings (32a, 32b, 32c) of the second drive motor 3 for controlling the windings (32a, 32b, 32c) of the second drive motor 3 to function as a reactor.

The motor controller 1 of the electrical apparatus 200 provided in the embodiment of the second aspect of the present application includes the first control circuit 102 and the second control circuit 104, so that the motor controller 1 of the first driving motor 2 has two control functions, one of which controls the first driving motor 2 to operate, and the other of which controls the windings (32a, 32b, 32c) of the second driving motor 3 to function as a reactor. In this way, when a reactor is needed, the second control circuit 104 is directly utilized to enable the windings (32a, 32b, 32c) of the second driving motor 3 to serve as the reactor, so that an additional reactor is omitted, the structure of the electrical equipment 200 is simplified, the utilization space in the whole machine is saved, the integration level of the electrical equipment 200 can be improved, the installation procedures are reduced, the production efficiency is improved, and the system material cost of the electrical equipment 200 is effectively reduced.

The control circuit for controlling the operation of the second driving motor 3 may be separately disposed on the circuit boards of other controllers, or may be partially integrated on the circuit board 10 of the motor controller 1, or may be fully integrated on the circuit board 10 of the motor controller 1.

It should be noted that, for the electrical equipment 200 having the first driving motor 2 and the second driving motor 3, generally, multiple functions are simultaneously provided, and the first driving motor 2 drives most components to operate, so as to realize main functions; the second driving motor 3 drives the small component to operate, and secondary functions are achieved. Therefore, the first drive motor 2 and the second drive motor 3 do not generally operate simultaneously. When the electrical equipment 200 operates the main function, the first driving motor 2 operates, and at the moment, the power of the motor controller 1 is large, and a reactor is needed; when the electrical equipment 200 operates the secondary function, the second driving motor 3 operates, and at this time, the controller has low power and generally does not need a reactor. Therefore, the second control circuit 104 is added to the motor controller 1 of the first drive motor 2, and the windings (32a, 32b, 32c) of the second drive motor 3 can equivalently realize the function of the reactor by the second control circuit 104. This is equivalent to integrating the function of the reactor in the motor controller 1 of the first driving motor 2, thereby omitting an additionally provided reactor, effectively improving the integration level of the electrical equipment 200, improving the production efficiency, reducing the material cost, improving the utilization rate of the internal space of the electrical equipment 200, and bringing convenience for optimizing the internal wiring design and the structural design of the electrical equipment 200.

Such as: for a washing machine with a drum motor and a fan motor, the washing machine generally has a washing function and a drying function at the same time, and the drum motor drives a drum to run to realize the functions of washing, dewatering and the like; the fan motor drives the fan to operate, and the drying function is realized and is a secondary function. In other words, when the whole washing machine is in a non-drying state, the drum motor drives the drum to operate; when the whole washing machine is in a drying state, the fan motor drives the fan to operate. Therefore, the drum motor and the fan motor do not generally operate simultaneously. Therefore, the reactor can be equivalently realized by using the windings (32a, 32b, 32c) of the fan motor.

Some embodiments are described below with reference to the accompanying drawings.

EXAMPLE five

The motor controller 1 includes a power supply circuit 108 (shown in fig. 6), and the power supply circuit 108 is used for connecting an external power supply. The second control circuit 104 is used to selectively connect the windings (32a, 32b, 32c) of the second drive motor 3 to the power circuit 108.

When the electrical equipment 200 operates the main function, the first driving motor 2 operates, and at the moment, the power of the motor controller 1 is high, and a wire-inlet electric reactor is generally needed; and when electrical equipment 200 operates the secondary function, second driving motor 3 operates, and controller power is less at this moment, generally need not the inlet wire reactor. Therefore, the second control circuit 104 is added to the motor controller 1 of the first drive motor 2, and the windings (32a, 32b, 32c) of the second drive motor 3 are selectively connected to the power supply circuit 108 by the second control circuit 104, that is, the windings (32a, 32b, 32c) of the second drive motor 3 can equivalently realize the function of a line inlet reactor.

This is equivalent to integrating the function of the incoming line reactor in the motor controller 1 of the first driving motor 2, thereby omitting the incoming line reactor additionally arranged, effectively improving the integration level of the electrical equipment 200, improving the production efficiency, reducing the material cost, improving the utilization rate of the internal space of the electrical equipment 200, and bringing convenience for optimizing the internal wiring design and the structural design of the electrical equipment 200.

The second control circuit 104 is electrically connected to the power supply circuit 108. The second control circuit 104 includes a component switching circuit 1042. The module switching circuit 1042 includes an electrical connection portion 1046 and a switching module 1044 provided on the electrical connection portion 1046, as shown in fig. 7.

The electrical connection portion 1046 connects the windings (32a, 32b, 32c) of the second drive motor 3 in series to the power supply circuit 108.

The switching component 1044 is used for controlling the on/off of the electrical connection portion 1046 according to the state of the electrical apparatus 200, so that the windings (32a, 32b, 32c) of the second driving motor 3 are selectively connected in series to the power circuit 108.

The circuit board 10 of the motor controller 1 is connected with an external power supply through the power circuit 108, so that the normal power supply of the circuit board 10 is ensured. Meanwhile, the power circuit 108, the first control circuit 102 and the second control circuit 104 are integrated on the circuit board 10, and the first control circuit 102 and the second control circuit 104 are close to the power circuit 108, so that the wiring design is facilitated, the circuit structure is simplified, and the integration level of the circuit board 10 is improved. The power circuit 108 supplies power to the first control circuit 102, so as to ensure that the first control circuit 102 can control the first driving motor 2 to operate normally. The second control circuit 104 implements a control function through the module switching circuit 1042, and particularly controls the windings (32a, 32b, 32c) of the second driving motor 3 to be selectively connected in series to the power circuit 108 by controlling the switching module 1044 to be turned on or turned off.

When the switching component 1044 conducts the electrical connection portion 1046, the windings (32a, 32b, 32c) of the second driving motor 3 are serially connected to the power circuit 108 through the electrical connection portion 1046. When the switching assembly 1044 disconnects the electrical connection 1046, the windings (32a, 32b, 32c) of the second drive motor 3 are disconnected from the power circuit 108. The scheme has the advantages of ingenious design, low cost and easy popularization.

The module switching circuit 1042 is specifically configured to: when the electrical apparatus 200 is in a state corresponding to the operation of the first driving motor 2, the switching component 1044 controls the electrical connection portion 1046 to be in a conductive state, so that the windings (32a, 32b, 32c) of the second driving motor 3 are connected in series to the power circuit 108. When the electrical apparatus 200 is in a state corresponding to the operation of the second driving motor 3, the switching component 1044 controls the electrical connection portion 1046 to be in a disconnected state, so that the windings (32a, 32b, 32c) of the second driving motor 3 are disconnected from the power supply circuit 108.

As described above, in the electrical equipment 200 including the first drive motor 2 and the second drive motor 3, when the electrical equipment 200 operates the function corresponding to the second drive motor 3, the controller power is low and the wire-feeding reactor is not needed, and when the electrical equipment 200 operates the function corresponding to the first drive motor 2, the controller power is high and the wire-feeding reactor is needed. Therefore, when the electrical equipment 200 is in a state corresponding to the operation of the first driving motor 2, that is, the second driving motor 3 does not need to operate, the switching component 1044 controls the electrical connection portion 1046 to be in a conductive state, that is, the windings (32a, 32b, 32c) of the second driving motor 3 can be connected in series to the power circuit 108, and thus, the electrical equipment functions as a reactor. When the whole machine is in a state corresponding to the operation of the second driving motor 3, that is, the second driving motor 3 needs to operate, the switching component 1044 controls the electrical connection portion 1046 to be in a disconnected state, that is, the windings (32a, 32b, 32c) of the second driving motor 3 can be switched back to a normal circuit, so as to ensure the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

It should be noted that the operation mode and the switching between the operation modes of the electrical appliance 200 are generally written in a computer program, and the processor executes the computer program to control each hardware component to execute the corresponding action. Therefore, in this embodiment, the specific action timing of the switching component 1044 can also be written into the computer program of the electrical apparatus 200, and is consistent with the state of the whole electrical apparatus, so as to implement automatic switching.

Such as: when the electrical apparatus 200 is to operate the first driving motor 2 in the corresponding mode, the switching component 1044 is activated in advance for a set time (e.g., 3 seconds, 5 seconds, etc.), and the electrical connection portion 1046 is conducted, so that the windings (32a, 32b, 32c) of the second driving motor 3 are connected in series to the power circuit 108, thereby ensuring that the subsequent first driving motor 2 can operate normally.

When the electrical apparatus 200 is to be switched to the mode corresponding to the operation of the second driving motor 3, the switching component 1044 is operated in advance for a set time (e.g. 3 seconds, 5 seconds, etc.), and the electrical connection portion 1046 is disconnected, so that the windings (32a, 32b, 32c) of the second driving motor 3 are disconnected from the power circuit 108, thereby ensuring that the subsequent second driving motor 3 can operate normally.

Further, the power supply circuit 108 includes: an ac power supply access circuit 1082 and a rectifier circuit 1096, as shown in fig. 6. The ac power access circuit 1082 includes an ac power positive terminal 1084 and an ac power negative terminal 1086. The rectifier circuit 1096 connects the ac power supply access circuit 1082 and the first control circuit 102.

The power supply circuit 108 includes an ac power supply access circuit 1082 and a rectifier circuit 1096. The positive end 1084 of the alternating current power supply access circuit 1082 is connected with the positive electrode of the alternating current power supply, and the negative end 1086 of the alternating current power supply is connected with the negative electrode of the alternating current power supply, so that the alternating current power supply can be used for supplying power to the motor controller 1, the electric equipment 200 can conveniently work by using common municipal alternating current power supplies and the like, and the universality of the electric equipment 200 is improved. The rectifying circuit 1096 can convert the ac power into the dc power, so that the first control circuit 102 can provide the required electric energy according to the operation requirement of the first driving motor 2, thereby meeting the operation requirement of the first driving motor 2.

The module switching circuit 1042 is connected between the ac power supply positive terminal 1084 and the rectifier circuit 1096, so that the windings (32a, 32b, 32c) of the second drive motor 3 are connected in series between the ac power supply positive terminal 1084 and the rectifier circuit 1096.

The scheme can directly connect the windings (32a, 32b, 32c) of the second driving motor 3 in series into the alternating current power supply inlet wire, so that the windings (32a, 32b, 32c) of the second driving motor 3 can serve as the function of an inlet wire reactor. This scheme simple structure, the wiring design of being convenient for.

Further, the switching assembly 1044 includes at least one switch 1050, and the kind of the switch 1050 includes at least one of a switching element and a relay.

The switching module 1044 is mainly opened and closed to switch the power supply circuit 108, the electrical connection portion 1046, and the windings (32a, 32b, 32c) of the second drive motor 3. Therefore, common switching elements, relays, and the like can satisfy the requirement.

The switching element 1050 may have only one closed state, such as a single-pole single-throw switch, and only controls the on/off of one line. The switch 1050 may also have multiple closed states, such as a single-pole double-throw switch, and the selective connection and disconnection of multiple lines can be realized by selecting a specific closed state.

Of course, the switch 1050 having multiple closed states may be equivalently replaced by multiple switches 1050 having only one closed state, such as two single-pole single-throw switches may equivalently replace one single-pole double-throw switch.

Specifically, as shown in fig. 6, the electrical connection portion 1046 includes a first connection line 1071 and a second connection line 1072. The switching component 1044 includes: a first switch 1051, a second switch 1052, and a third switch 1053.

The first switching element 1051 is connected in series between the ac power source positive terminal 1084 and the rectifying circuit 1096, and is used for controlling the on/off between the ac power source positive terminal 1084 and the rectifying circuit 1096, and two ends of the first switching element 1051 are respectively connected to one end of the first connection line 1071 and one end of the second connection line 1072.

The second switch 1052 is connected to the other end of the first connection line 1071, and is configured to control conduction between one phase winding 32a of the second drive motor 3 and the first connection line 1071 or between the one phase winding and the second inverter circuit 4 of the second drive motor 3.

The third switching member 1053 is connected to the other end of the second connection line 1072, and is used for controlling the conduction of the other phase winding 32b of the second driving motor 3 with the second connection line 1072 or with the second inverter circuit 4 of the second driving motor 3.

The present embodiment specifically uses three switches and two connecting lines 1070 to realize the selective series connection of the windings (32a, 32b) of the second drive motor 3 into the power supply circuit 108.

Specifically, when the complete machine is in a state corresponding to the operation of the first driving motor 2, the first switching member 1051 disconnects the direct communication between the positive end 1084 of the ac power source and the rectifying circuit 1096, the second switching member 1052 controls the conduction of the one phase winding 32a of the second driving motor 3 with the first connecting line 1071, the third switching member 1053 controls the conduction of the other phase winding 32b of the second driving motor 3 with the second connecting line 1072, and then the positive end 1084 of the ac power source, the first connecting line 1071, the one phase winding 32a of the second driving motor 3, the other phase winding 32b of the second driving motor 3, and the second connecting line 1072 are sequentially conducted and then connected with the rectifying circuit 1096, that is: it is realized that the windings (32a, 32b) of the second drive motor 3 are connected in series between the ac power supply positive terminal 1084 and the rectifier circuit 1096.

When the complete machine is in a state corresponding to the operation of the second driving motor 3, the first switching piece 1051 switches on the direct connection between the positive terminal 1084 of the ac power supply and the rectifying circuit 1096, the second switching piece 1052 controls the conduction between one phase winding 32a of the second driving motor 3 and the second inverter circuit 4 of the second driving motor 3, the third switching piece 1053 controls the conduction between the other phase winding 32b of the second driving motor 3 and the second inverter circuit 4 of the second driving motor 3, the connection between the windings (32a, 32b) of the second driving motor 3 and the power circuit 108 is broken, and the windings (32a, 32b) of the second driving motor 3 are switched back to the normal circuit of the second driving motor 3, so as to ensure the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

More specifically, as shown in fig. 6, the first switching member 1051 is a single-pole single-throw switch, and the second switching member 1052 and the third switching member 1053 are single-pole double-throw switches. The second drive motor 3 is a three-phase motor comprising three sets of windings (32a, 32b, 32 c). The second switching member 1052 has a stationary contact connected to a phase winding 32a of the second driving motor 3, and two moving contacts connected to the first connection line 1071 and the second inverter circuit 4, respectively. The stationary contact of the third switching member 1053 is connected to the other phase winding 32b of the second driving motor 3, and the two moving contacts are connected to the second connection line 1072 and the second inverter circuit 4, respectively.

When the complete machine is in a state corresponding to the operation of the first driving motor 2, the first switching piece 1051 is opened, the second switching piece 1052 is closed to the movable contact connected with the first connection line 1071, and the third switching piece 1053 is closed to the movable contact connected with the second connection line 1072.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the first switching piece 1051 is closed, the second switching piece 1052 is closed to the movable contact connected with the second inverter circuit 4, and the third switching piece 1053 is closed to the movable contact connected with the second inverter circuit 4.

The connection of the second inverter circuit 4 to the windings (32a, 32b, 32c) of the second drive motor 3 is known in the art and will not be described in detail here.

EXAMPLE six

As shown in fig. 8, the difference from the fifth embodiment is that: the unit switching circuit 1042 is connected to a dc bus 1094 rectified by a rectifying circuit 1096, so that windings (32a, 32b, 32c) of the second drive motor 3 are connected in series to the dc bus 1094.

According to the scheme, the windings (32a, 32b and 32c) of the second driving motor 3 can be connected in series with the direct current bus 1094 rectified by the rectifying circuit 1096, so that the windings (32a, 32b and 32c) of the second driving motor 3 can also be connected in series with the rectified direct current bus 1094, the windings (32a, 32b and 32c) of the second driving motor 3 are also connected in series with an alternating current power supply inlet wire, and the windings (32a, 32b and 32c) of the second driving motor 3 can serve as an inlet wire reactor. In this way, the design of the circuit board 10 can be optimized by the technician according to the specific shape, size, layout of the circuit board 10 and other factors of the electrical device 200.

The rectifier circuit 1096 includes: a main rectifier circuit 1088 and a filter circuit 1024, as shown in fig. 6. The main rectifier circuit 1088 is connected to the ac power supply access circuit 1082. The filter circuit 1024 connects the main rectifier circuit 1088 and the first control circuit 102. The dc bus 1094 is connected between the main rectifier circuit 1088 and the filter circuit 1024.

The rectifying circuit 1096 includes a main rectifying circuit 1088 and a filter circuit 1024, the main rectifying circuit 1088 converts ac power into dc power, and the filter circuit 1024 filters out ripples in the rectified output voltage, so as to ensure that the voltage supplied to the first control circuit 102 is more stable. Meanwhile, the dc bus 1094 is located between the rectifying circuit 1096 and the filter circuit 1024, so the component switching circuit 1042 can be connected between the rectifying main circuit 1088 and the filter circuit 1024 to prevent the windings (32a, 32b, 32c) of the second driving motor 3 from influencing the operation of the filter circuit 1024 and the subsequent first control circuit 102 after being connected in series.

Specifically, the dc bus 1094 includes a dc positive bus 1090. The module switching circuit 1042 is connected to the dc positive bus 1090, and the windings (32a, 32b, 32c) of the second drive motor 3 are connected in series to the dc positive bus 1090.

According to the scheme, the component switching circuit 1042 is directly connected to the direct-current positive bus 1090, so that windings (32a, 32b and 32c) of the second driving motor 3 can also be connected to the rectified direct-current positive bus 1090 in series, and therefore the windings (32a, 32b and 32c) of the second driving motor 3 can equivalently realize the function of a wire inlet electric controller.

As shown in fig. 8, the electrical connection portion 1046 includes a third connection line 1073 and a fourth connection line 1074. The switching component 1044 includes: a fourth switching piece 1054, a fifth switching piece 1055, and a sixth switching piece 1056.

The fourth switching piece 1054 is connected to the dc positive bus 1090, and is configured to control on/off between the dc positive bus 1090 and the filter circuit 1024, and two ends of the fourth switching piece 1054 are connected to one end of the third connection line 1073 and one end of the fourth connection line 1074, respectively.

The fifth switching member 1055 is connected to the other end of the third connection 1073, and is used to control a phase winding 32a of the second driving motor 3 to be conducted with the third connection 1073 or with the second inverter circuit 4 of the second driving motor 3.

The sixth switching member 1056 is connected to the other end of the fourth connection 1074, and is used to control the conduction of the other phase winding 32b of the second driving motor 3 with the fourth connection 1074 or with the second inverter circuit 4 of the second driving motor 3.

The present embodiment specifically uses three switches and two connecting lines 1070 to realize the selective series connection of the windings (32a, 32b) of the second drive motor 3 into the power supply circuit 108. Specifically, when the complete machine is in a state corresponding to the operation of the first driving motor 2, the fourth switching member 1054 disconnects the direct connection between the dc positive bus 1090 and the filter circuit 1024, the fifth switching member 1055 controls the conduction of the one phase winding 32a of the second driving motor 3 and the third connection line 1073, and the sixth switching member 1056 controls the conduction of the other phase winding 32b of the second driving motor 3 and the fourth connection line 1074, so that the ac power source positive terminal 1084, the rectifier main circuit 1088, the dc positive bus 1090, the third connection line 1073, the one phase winding 32a of the second driving motor 3, the other phase winding 32b of the second driving motor 3, and the fourth connection line 1074 are sequentially conducted, and then connected to the filter circuit 1024, that is: the connection of the windings (32a, 32b) of the second drive motor 3 to the direct current positive busbar 1090 is achieved.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the fourth switching piece 1054 conducts direct communication between the direct current positive bus 1090 and the filter circuit 1024, the fifth switching piece 1055 controls one phase winding 32a of the second driving motor 3 to be conducted with the second inverter circuit 4 of the second driving motor 3, the sixth switching piece 1056 controls the other phase winding 32b of the second driving motor 3 to be conducted with the second inverter circuit 4 of the second driving motor 3, so that the windings (32a, 32b) of the second driving motor 3 are disconnected from the power circuit 108, and the windings (32a, 32b) of the second driving motor 3 are cut back into the normal circuit of the second driving motor 3, thereby ensuring the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

More specifically, as shown in fig. 8, the fourth switching piece 1054 is a single-pole single-throw switch, and the fifth switching piece 1055 and the sixth switching piece 1056 are single-pole double-throw switches. The second drive motor 3 is a three-phase motor comprising three sets of windings (32a, 32b, 32 c). The stationary contact of the fifth switching member 1055 is connected to a phase winding 32a of the second driving motor 3, and the two moving contacts are connected to the third connection line 1073 and the second inverter circuit 4, respectively. The fixed contact of the sixth switching member 1056 is connected to the other phase winding 32b of the second driving motor 3, and the two movable contacts are connected to the fourth connection line 1074 and the second inverter circuit 4, respectively.

When the complete machine is in a state corresponding to the operation of the first driving motor 2, the fourth switching piece 1054 is opened, the fifth switching piece 1055 is closed to the movable contact connected with the third connection line 1073, and the sixth switching piece 1056 is closed to the movable contact connected with the fourth connection line 1074.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the fourth switching piece 1054 is closed, the fifth switching piece 1055 is closed to the movable contact connected with the second inverter circuit 4, and the sixth switching piece 1056 is closed to the movable contact connected with the second inverter circuit 4.

EXAMPLE seven

As shown in fig. 12, the difference from the sixth embodiment is that: the motor controller 1 further includes a second inverter circuit 4, and the second inverter circuit 4 is electrically connected to windings (32a, 32b, 32c) of the second drive motor 3. The first control circuit 102 includes a first inverter circuit 1026, and the second inverter circuit 4 is connected in parallel to the first inverter circuit 1026. The rectifying circuit 1096 is also connected to the second inverter circuit 4. The first control circuit 102 may also include a driver circuit or other circuits.

In this scheme, second inverter circuit 4 and first inverter circuit 1026 share rectifier circuit 1096, then need not additionally to set up rectifier circuit 1096 for second driving motor 3, therefore improved motor controller 1's integrated level, reduced product cost.

The switching assembly 1044 includes the seventh switch 1057. The seventh switching element 1057 is connected to the dc positive bus 1090, and is used to control the dc positive bus 1090 to be conducted with the windings (32a, 32b, 32c) of the second driving motor 3 or directly conducted with the filter circuit 1024.

The scheme particularly realizes that the windings (32a, 32b, 32c) of the second driving motor 3 are selectively connected in series with the power circuit 108 by using a switching piece and a connecting line 1070, and is favorable for reducing the cost. Specifically, when the complete machine is in a state corresponding to the operation of the first drive motor 2, the IGBTs 42 of the second inverter circuit 4 are all turned off, and the seventh switching element 1057 controls the direct-current positive bus 1090 to be conducted with the windings (32a, 32b, 32c) of the second drive motor 3, so that the alternating-current power supply positive terminal 1084, the rectifier main circuit 1088, the direct-current positive bus 1090, the connection line 1070, the neutral point of the windings (32a, 32b, 32c) of the second drive motor 3, and the upper tube freewheeling diode 44 of the H-bridge of the second inverter circuit 4 are sequentially conducted, and then connected to the first inverter circuit 1026, that is: the connection of the windings (32a, 32b, 32c) of the second drive motor 3 to the direct current positive busbar 1090 is achieved.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the seventh switching piece 1057 controls the direct current positive bus 1090 to be directly communicated with the filter circuit 1024, so that the windings (32a, 32b and 32c) of the second driving motor 3 are disconnected from the power circuit 108, and the windings (32a, 32b and 32c) of the second driving motor 3 are switched back to the normal circuit of the second driving motor 3, thereby ensuring the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

More specifically, the second drive motor 3 is a three-phase motor including three sets of windings (32a, 32b, 32 c). The second driving inverter circuit 4 is constructed and connected in the same manner as in the first embodiment of the first aspect, and will not be repeated here. The electrical connection portion 1046 includes a connection wire 1070. The seventh switching element 1057 is a single-pole double-throw switch, the stationary contact is connected to the dc positive bus 1090, the two moving contacts are connected to the first control circuit 102 and one end of the connection line 1070, and the other end of the connection line 1070 is connected to the windings (32a, 32b, 32c) of the second driving motor 3. The positive and negative poles of the second inverter circuit 4 are respectively connected with the positive and negative poles filtered by the filter circuit 1024.

When the complete machine is in a state corresponding to the operation of the first driving motor 2, the seventh switching member 1057 closes the movable contact connected to the connection line 1070.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the seventh switching piece 1057 is closed to the movable contact connected with the filter circuit 1024.

Example eight

As shown in fig. 9, the difference from the sixth embodiment is that: the dc bus 1094 includes a dc negative bus 1092. The module switching circuit 1042 is connected to the dc negative bus 1092, so that the windings (32a, 32b, 32c) of the second driving motor 3 are connected in series to the dc negative bus 1092.

In the scheme, the component switching circuit 1042 is directly connected to the direct-current negative bus 1092, so that windings (32a, 32b and 32c) of the second driving motor 3 can also be connected in series to the rectified direct-current negative bus 1092, and because the direct-current negative bus 1092 and the direct-current positive bus 1090 belong to a loop, the windings (32a, 32b and 32c) of the second driving motor 3 can equivalently realize the function of an incoming-line electric controller.

Specifically, the electric connection portion 1046 includes a fifth connection line 1075 and a sixth connection line 1076. The switching component 1044 includes: an eighth switching piece 1058, a ninth switching piece 1059, and a tenth switching piece 1060.

The eighth switch 1058 is connected to the dc negative bus 1092 for controlling on/off between the dc negative bus 1092 and the filter circuit 1024, and two ends of the eighth switch 1058 are connected to one end of the fifth connection line 1075 and one end of the sixth connection line 1076, respectively.

The ninth switching member 1059 is connected to the other end of the fifth connection 1075, and is used for controlling a phase winding 32a of the second driving motor 3 to be conducted with the fifth connection 1075 or with the second inverter circuit 4 of the second driving motor 3.

The tenth switching member 1060 is connected to the other end of the sixth connection 1076, and is used to control the conduction of the other phase winding 32b of the second driving motor 3 with the sixth connection 1076 or with the second inverter circuit 4 of the second driving motor 3.

The present embodiment specifically uses three switches and two connecting lines 1070 to realize the selective series connection of the windings (32a, 32b) of the second drive motor 3 into the power supply circuit 108. Specifically, when the complete machine is in a state corresponding to the operation of the first driving motor 2, the eighth switching member 1058 disconnects the direct communication between the dc negative bus 1092 and the filter circuit 1024, the ninth switching member 1059 controls the conduction of the first phase winding 32a of the second driving motor 3 and the fifth connection line 1075, the tenth switching member 1060 controls the conduction of the other phase winding 32b of the second driving motor 3 and the sixth connection line 1076, and then the filter circuit 1024, the fifth connection line 1075, the first phase winding 32a of the second driving motor 3, the other phase winding 32b of the second driving motor 3, the sixth connection line 1076, the rectifier main circuit 1088, and the ac power supply negative terminal 1086 are sequentially conducted, that is: it is achieved that the windings (32a, 32b) of the second drive motor 3 are connected to the negative direct current busbar 1092.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the eighth switching piece 1058 switches on the direct connection between the dc negative bus 1092 and the filter circuit 1024, the ninth switching piece 1059 controls the conduction between one phase winding 32a of the second driving motor 3 and the second inverter circuit 4 of the second driving motor 3, the tenth switching piece 1060 controls the conduction between the other phase winding 32b of the second driving motor 3 and the second inverter circuit 4 of the second driving motor 3, the connection between the windings (32a, 32b) of the second driving motor 3 and the power circuit 108 is disconnected, and the windings (32a, 32b) of the second driving motor 3 are switched back to the normal circuit of the second driving motor 3, so as to ensure the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

More specifically, the eighth switching piece 1058 is a single-pole single-throw switch, and the ninth switching piece 1059 and the tenth switching piece 1060 are single-pole double-throw switches. The second drive motor 3 is a three-phase motor comprising three sets of windings (32a, 32b, 32 c). A stationary contact of the ninth switching member 1059 is connected to a phase winding 32a of the second driving motor 3, and two moving contacts are connected to the fifth connection line 1075 and the second inverter circuit 4, respectively. A stationary contact of the tenth switching member 1060 is connected to the other phase winding 32b of the second driving motor 3, and two moving contacts are connected to the sixth connection line 1076 and the second inverter circuit 4, respectively.

When the complete machine is in a state corresponding to the operation of the first driving motor 2, the eighth switching piece 1058 is opened, the ninth switching piece 1059 is closed to the moving contact connected with the fifth connection line 1075, and the tenth switching piece 1060 is closed to the moving contact connected with the sixth connection line 1076.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the eighth switching piece 1058 is closed, the ninth switching piece 1059 is closed to the movable contact connected with the second inverter circuit 4, and the tenth switching piece 1060 is closed to the movable contact connected with the second inverter circuit 4.

Example nine

As shown in fig. 13, the difference from the eighth embodiment is that: the motor controller 1 further includes a second inverter circuit 4, and the second inverter circuit 4 is electrically connected to windings (32a, 32b, 32c) of the second drive motor 3. The first control circuit 102 includes a first inverter circuit 1026, and the second inverter circuit 4 is connected in parallel to the first inverter circuit 1026. The rectifying circuit 1096 is also connected to the second inverter circuit 4.

The switching component 1044 includes an eleventh switching component 1061, and the eleventh switching component 1061 is connected to the dc negative bus 1092, and is configured to control the dc negative bus 1092 to be conducted with the windings (32a, 32b, 32c) of the second driving motor 3 or directly conducted with the filter circuit 1024.

The scheme realizes that the windings (32a, 32b, 32c) of the second driving motor 3 are selectively connected in series with the power circuit 108 by utilizing a switching piece and a connecting line 1070, and has simple structure and low cost. Specifically, when the complete machine is in a state corresponding to the operation of the first driving motor 2, all IGBTs 42 of the second inverter circuit 4 are turned off, and the eleventh switching part 1061 controls the dc negative bus 1092 to be conducted with the windings (32a, 32b, 32c) of the second driving motor 3, so that the filter circuit 1024, the lower tube freewheeling diode 46 of the H-bridge of the second inverter circuit 4, the windings (32a, 32b, 32c) of the second driving motor 3, the neutral point of the windings (32a, 32b, 32c) of the second driving motor 3, the connection line 1070, the rectifier main circuit 1088, and the ac power supply negative terminal 1086 are sequentially conducted, that is: it is achieved that the windings (32a, 32b, 32c) of the second drive motor 3 are connected to the negative dc busbar 1092.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the eleventh switching part 1061 controls the direct-current negative bus 1092 to be directly communicated with the filter circuit 1024, so that the windings (32a, 32b, and 32c) of the second driving motor 3 are disconnected from the power circuit 108, and the windings (32a, 32b, and 32c) of the second driving motor 3 are switched back to the normal circuit of the second driving motor 3, thereby ensuring the normal operation of the second driving motor 3 and the components driven by the second driving motor 3.

More specifically, the second drive motor 3 is a three-phase motor including three sets of windings (32a, 32b, 32 c). The second inverter circuit 4 is constructed and connected in the same manner as in the first embodiment, and will not be repeated here. The electrical connection portion 1046 includes a connection wire 1070. The eleventh switching element 1061 is a single-pole double-throw switch, the stationary contact is connected to the negative dc bus 1092, the two moving contacts are respectively connected to the filter circuit 1024 and one end of the connection line 1070, and the other end of the connection line 1070 is connected to the windings (32a, 32b, 32c) of the second driving motor 3. The positive and negative poles of the second inverter circuit 4 are respectively connected with the positive and negative poles filtered by the filter circuit 1024.

When the complete machine is in a state corresponding to the operation of the first driving motor 2, the eleventh switching part 1061 closes the movable contact connected to the connection line 1070.

When the whole machine is in a state corresponding to the operation of the second driving motor 3, the eleventh switching piece 1061 is closed to the movable contact connected to the filter circuit 1024.

Example ten

As shown in fig. 7, the difference from the fifth embodiment is that: the second drive motor 3 is a two-phase motor comprising two sets of windings (32a, 32 b). The working principle is basically the same as that of the fifth embodiment, and the description is omitted here.

EXAMPLE eleven

As shown in fig. 10, the difference from the sixth embodiment is that: the second drive motor 3 is a two-phase motor comprising two sets of windings (32a, 32 b). The working principle is basically the same as that of the sixth embodiment, and the description is omitted here.

Example twelve

As shown in fig. 14, the difference from the seventh embodiment is that: the second drive motor 3 is a two-phase motor comprising two sets of windings (32a, 32 b). The second inverter circuit 4 is constructed and connected in the same manner as the first embodiment, and will not be repeated here. The working principle is basically the same as that of the seventh embodiment, and the description is omitted here.

EXAMPLE thirteen

As shown in fig. 11, the difference from the eighth embodiment is that: the second drive motor 3 is a two-phase motor comprising two sets of windings (32a, 32 b). The working principle is basically the same as that of the eighth embodiment, and the description is omitted here.

Example fourteen

As shown in fig. 15, the difference from the ninth embodiment is that: the second drive motor 3 is a two-phase motor comprising two sets of windings (32a, 32 b). The second inverter circuit 4 is configured and connected in the same manner as in the fourth embodiment of the first aspect, and will not be repeated here. The working principle is basically the same as that of the ninth embodiment, and the description is omitted here.

As shown in fig. 17 and 18, an electric motor apparatus 100 of an electric device 200 according to an embodiment of the third aspect of the present application includes: the motor controller 1 and the first drive motor 2 of the electrical appliance 200 as in any one of the first and second aspect embodiments. The first drive motor 2 is electrically connected to a first control circuit 102 of the motor controller 1.

The motor apparatus 100 of the electrical apparatus 200 provided in the embodiment of the third aspect of the present application includes the motor controller 1 of the electrical apparatus 200 in any one of the embodiments of the first aspect and the second aspect, so that all the advantages of any one of the embodiments described above are achieved, and details are not described herein again.

In the case where the motor controller 1 is the motor controller 1 of the electrical apparatus according to any one of the embodiments of the first aspect, the first control circuit 102 is also electrically connected to the second drive motor 3.

In the above embodiment, the first drive motor 2 includes the housing 220, as shown in fig. 22. The housing 220 includes a rear end cover 204, and the motor controller 1 is fixed to the rear end cover 204.

The motor controller 1 is fixed on the rear end cover 204 of the first driving motor 2, so that the circuit board 10 can be conveniently connected with the first driving motor 2, the motor controller 1 can be conveniently protected, and the motor controller 1 is prevented from being interfered by the friction and other conditions between the roller and the motor controller 1.

As shown in fig. 19 and 20, an electrical apparatus 200 provided by an embodiment of the fourth aspect of the present application includes: as the motor apparatus 100 and the second drive motor 3 according to any one of the third aspect embodiments, the windings (32a, 32b, 32c) of the second drive motor 3 are electrically connected to the second control circuit 104 of the motor apparatus 100.

The electric appliance 200 provided in the fourth embodiment of the present application includes the motor apparatus 100 according to any one of the third embodiments, so that all the advantages of any one of the above embodiments are provided, and details are not repeated herein.

In the above embodiment, the electric appliance device 200 includes the main control board 202, as shown in fig. 20. The main control board 202 is electrically connected to the power circuit 108 of the motor apparatus 100.

The main control board 202 of the electrical equipment 200 is used for supplying power to the motor controller 1, namely, the main control board 202 serves as an external power supply of the motor controller 1, and no power supply needs to be additionally configured for the motor controller 1, so that the wiring structure of the electrical equipment 200 is simplified.

In the above embodiment, the main control board 202 communicates with the motor controller 1 of the motor apparatus 100 through a communication device (e.g., a cable device), and issues an instruction to the motor controller 1 through the communication device, and receives information fed back by the motor controller 1.

According to the scheme, the main control board 202 is used for supplying power to the motor controller 1 and the first driving motor 2, issuing a motor operation instruction in a communication mode, receiving information such as motor speed and temperature fed back by the motor controller 1, and controlling the switching component 1044 of the second control circuit 104 according to the state of the whole machine. Wherein the communication device may be, but is not limited to, a cable assembly.

In some embodiments, the second drive motor 3 comprises a two-phase motor.

In other embodiments, the second drive motor 3 comprises a three-phase motor.

The second driving motor 3 adopts a two-phase motor or a three-phase motor, can meet the operation of a fan and the function of a reactor, and has simple structure and lower cost.

In any of the above embodiments, the electric appliance 200 includes a drum washing machine, the first driving motor 2 of the motor apparatus 100 includes a drum motor, and the second driving motor 3 includes a fan motor. The first inverter circuit 1026 includes a drum motor inverter circuit, and the second inverter circuit 4 includes a fan inverter circuit.

In other embodiments, the electrical appliance 200 includes an air conditioner, the first driving motor 2 of the motor apparatus 100 includes a compressor motor, and the second driving motor 3 includes a blower motor.

Alternatively, the electric appliance 200 includes a water heater, the first driving motor 2 of the motor apparatus 100 includes a compressor motor, and the second driving motor 3 includes a fan motor.

Alternatively, the electric appliance 200 includes a refrigerator, the first driving motor 2 of the motor apparatus 100 includes a compressor motor, and the second driving motor 3 includes a fan motor.

Of course, the electrical apparatus 200 is not limited to the drum washing machine, the air conditioner, the water heater, and the refrigerator, and may be other electrical apparatuses 200 having two or more motors.

Some embodiments are described below by taking a drum washing machine as an example.

As shown in fig. 21, the integrated drum washing machine 300 for washing and drying includes a cabinet 302, a main control panel 202, a motor device 100, a fan motor 344, a fan 348, a drum 314, and the like. The front end of the drum 314 is open and is communicated with the laundry input port 304 of the washing machine for taking and putting articles such as laundry. Drum 314 is housed in tub 308, tub 308 and drum 314 are disposed in cabinet 302, and door 306 is provided at the front end of cabinet 302 for opening or closing laundry input opening 304. The drum 314 is provided with a through hole 318, and communicates with the inner space of the outer cylinder 308 through the through hole 318. The inner wall of the drum 314 is generally provided with a lifting rib 319 for driving the clothes to ascend, so that the clothes fall under the action of gravity after ascending, thereby realizing stirring.

A water supply valve 320 is fixed to the inside of the case 302, the water supply valve 320 having an inlet and an outlet, and the inlet of the water supply valve 320 being connected to a tap of a tap water pipe. The water supply valve 320 uses a water supply valve motor as a driving source, and opens or closes an outlet of the water supply valve 320 according to a rotation amount of the water supply valve motor. An outlet of the water supply valve 320 is connected to the water filling cartridge 324, and when the water supply valve 320 is opened, tap water is filled into the water filling cartridge 324 through the water supply valve 320. The water pouring box 324 has a cylindrical water pouring port 326, and the water pouring port 326 is inserted into the outer tube 308 to pour water into the outer tube 308.

An upper end portion of a drain pipe 328 is connected to the lowest portion of the outer cylinder 308, and a drain valve 330 is provided in the drain pipe 328. The drain valve 330 uses a drain valve motor as a driving source, and opens or closes the drain valve 330 according to the amount of rotation of the drain valve motor. When the drain valve 330 is closed, the water injected into the outer tub 308 from the water injection port 326 is accumulated in the outer tub 308. When the drain valve 330 is opened, the water in the outer tub 308 is drained through the drain pipe 328.

The drum washing machine 300 is provided with an air duct, and a fan 348 is provided in the air duct, and the fan 348 is used for driving the air flow in the air duct. Both ends of the air duct are respectively communicated with the front end and the rear end of the drum 314, so that the air flow forms a circulation. A condenser or a heater may be further disposed in the air duct to facilitate rapid taking away of the wet air in the drum 314, thereby achieving a drying function. The fan motor 344 is coupled to the fan 348 for driving the fan 348 in rotation. Specifically, the air duct includes a front air duct 336, a main air duct 334, and a rear air duct 350, which are sequentially communicated. The main air duct 334 is located below the outer tub 308; the front air duct 336 is positioned in front of the outer cylinder 308 and communicated with the inner space of the outer cylinder 308 through the front end part of the outer cylinder 308; the rear duct 350 is located behind the outer tub 308 and communicates with the inner space of the outer tub 308 through the rear end of the outer tub 308.

A fan case 338 is fixed to the rear end portion of the main duct 334, the fan case 338 has an air inlet 340 and an air outlet 342, the air inlet 340 is connected to the inner space of the main duct 334, and the air outlet 342 is connected to the lower end portion of the rear duct 350. The fan 348 is fixed in the fan housing 338, the fan motor 344 is fixed outside the fan housing 338, and the fan motor 344 is connected with the fan 348 through the fan rotating shaft 346 to drive the fan 348 to rotate.

The motor apparatus 100 includes a drum motor 310 and a motor controller 1. The drum motor 310 is located behind the outer tub 308 and is directly connected to the drum 314 through a rotation shaft 312. Alternatively, the roller 314 is located below the outer drum 308 and is connected to the roller 314 by a transmission such as a pulley. The drum motor 310 is used for driving the drum 314 to rotate, and the drum 314 rotates to drive the articles such as the clothes inside to rotate, fall, rub and the like, thereby realizing the washing and dewatering functions.

The motor controller 1 is disposed on the rear end cover 204 of the drum motor 310, and the motor controller 1 is electrically connected to the drum motor 310. The motor controller 1 includes a first control circuit 102 and a second control circuit 104. The first control circuit 102 is used to implement a first control function and the second control circuit 104 is used to implement a second control function. The first control function controls the operation of the drum motor 310, and the second control function is used to equivalently realize the function of the incoming line reactor.

The circuit board 10 includes the above-described first control circuit 102 and second control circuit 104. Wherein, the first control function controls the drum 314 to drive the motor to operate; the second control function controls the switching component 1044 according to the state of the whole machine.

The second control circuit 104 includes a switching component 1044 and a control module. According to the running state of the whole machine, the second control function determines whether the windings (32a, 32b, 32c) of the fan motor 344 are connected to the inlet end of the alternating current power supply or the rectified direct current bus end (namely, on the rectified direct current bus 1094) through the control of the switching component 1044. By combining the characteristic that the power of the motor controller 1 is low in a drying state and no wire inlet reactor is needed, when the whole machine is in a non-drying state, namely the (drying) fan 348 does not need to run, the second control function control switching component 1044 connects the windings (32a, 32b and 32c) of the fan 348 in series into the inlet end of the alternating current power supply or the rectified direct current bus 1094 to serve as the reactor; when the whole machine is in a drying state, that is, the (drying) fan 348 needs to operate, the second control function control switching component 1044 switches the windings (32a, 32b, 32c) of the fan 348 back to the circuits of the normal fan 348 in advance, and the alternating current or direct current incoming line is connected to the corresponding circuits in a direct connection mode.

The fan motor 344 may be a three-phase motor or a two-phase motor. When the windings (32a, 32b, 32c) of the fan motor 344 are connected in series to the rectified dc bus terminal, they may be connected in series to the dc positive bus 1090 or in series to the dc negative bus 1092. For the series connection form of the direct current positive bus 1090 or the direct current negative bus 1092, the hardware connection modes thereof are respectively divided into two types: one is direct series winding (32a, 32b, 32c) and one is freewheeling diode in the H-bridge of the inverter circuit of the fan 348 as part of the series circuit. For the second topology, the inverter circuit of the fan motor 344 shares the dc bus 1094 with the inverter circuit of the drum motor 310. When the windings (32a, 32b, 32c) of the fan motor 344 are connected in series with the direct current positive bus 1090, the windings (32a, 32b, 32c) of the three-phase (or two-phase) fan motor 344 are connected in series with the upper tube freewheeling diode 44 of the H-bridge and then connected into a corresponding circuit; when the windings (32a, 32b, 32c) of the fan motor 344 are connected in series with the negative dc bus 1092, the windings (32a, 32b, 32c) of the three-phase (or two-phase) fan motor 344 are connected in series with the lower freewheeling diode 46 of the H-bridge and then connected to the corresponding circuit.

The main control board 202 of the washing machine supplies power to the motor controller 1 through the cable assembly and communicates with the motor controller 1, the motor controller 1 issues a motor operation instruction and receives feedback information of the motor controller 1, the motor controller 1 respectively controls the drum motor to operate and feeds back information of the motor speed, the motor temperature and the like through receiving an upper computer instruction, and meanwhile, the switching assembly 1044 in the second control function is controlled according to the state of the whole machine.

As shown in fig. 20, the washing machine main control board 202 provides power to the motor device 100, issues a motor operation command and receives feedback information in a communication manner, and the motor controller 1 controls the motor to operate after receiving the operation command from the washing machine main control board 202.

As shown in fig. 17, the motor apparatus 100 includes a drum motor 310 and a motor controller 1, the motor controller 1 is disposed on the rear end cover 204 of the motor, and the motor controller 1 is electrically connected to the drum motor 310, where the motor controller 1 includes a first control function and a second control function, the first control function controls the operation of the motor, and the second control function is used to equivalently implement the function of the incoming line reactor.

Detailed description of the preferred embodiment

As shown in fig. 6, the fan motor is a three-phase motor, and the windings (32a, 32b, 32c) of the fan motor are directly connected in series with the inlet end of the alternating-current power supply. The switching assembly 1044 includes a first switch 1051, a second switch 1052 and a third switch 1053, and the electrical connection portion 1046 includes a first connection line 1071 and a second connection line 1072. The first inverter circuit 1026 is a drum motor inverter circuit, and the second inverter circuit 4 is a fan inverter circuit.

The first switching member 1051 is a single-pole single-throw switch, and the second switching member 1052 and the third switching member 1053 are single-pole double-throw switches. The fan motor is a three-phase motor and comprises three groups of windings (32a, 32b, 32 c). The second switch 1052 has a stationary contact connected to a phase winding 32a of the fan motor, and two moving contacts connected to the first connection circuit 1071 and the fan inverter circuit, respectively. The stationary contact of the third switching piece 1053 is connected with the other phase winding 32b of the fan motor, and the two moving contacts are respectively connected with the second connection line 1072 and the fan inverter circuit.

When the whole machine is in a non-drying state, the first switching piece 1051 is opened, the second switching piece 1052 is closed to the movable contact connected with the first connection line 1071, and the third switching piece 1053 is closed to the movable contact connected with the second connection line 1072.

When the whole machine is in a drying state, the first switching piece 1051 is closed, the second switching piece 1052 is closed to the movable contact connected with the fan inverter circuit, and the third switching piece 1053 is closed to the movable contact connected with the fan inverter circuit.

Detailed description of the invention

As shown in fig. 7, the difference from the first embodiment is that: the fan motor adopts a two-phase motor, and windings (32a and 32b) of the fan motor are directly connected in series with the inlet wire end of the alternating current power supply.

The working principle is the same as that of the first embodiment, and is not described herein.

Detailed description of the preferred embodiment

As shown in fig. 8, the fan motor is a three-phase motor, and windings (32a, 32b, 32c) of the fan motor are directly connected in series to a direct current positive bus 1090. The electrical connection portion 1046 includes a third connection line 1073 and a fourth connection line 1074. The switching component 1044 includes: a fourth switching piece 1054, a fifth switching piece 1055, and a sixth switching piece 1056.

The fourth switching member 1054 is a single-pole single-throw switch, and the fifth switching member 1055 and the sixth switching member 1056 are single-pole double-throw switches. The second drive motor 3 is a three-phase motor comprising three sets of windings (32a, 32b, 32 c). The stationary contact of the fifth switching member 1055 is connected to a phase winding 32a of the second driving motor 3, and the two moving contacts are connected to the third connection line 1073 and the fan inverter circuit, respectively. The fixed contact of the sixth switching member 1056 is connected to the other phase winding 32b of the second driving motor 3, and the two movable contacts are connected to the fourth connection line 1074 and the fan inverter circuit, respectively.

When the whole machine is in a non-drying state, the fourth switching piece 1054 is opened, the fifth switching piece 1055 is closed to the movable contact connected with the third connection line 1073, and the sixth switching piece 1056 is closed to the movable contact connected with the fourth connection line 1074.

When the whole machine is in a drying state, the fourth switching piece 1054 is closed, the fifth switching piece 1055 is closed to the movable contact connected with the fan inverter circuit, and the sixth switching piece 1056 is closed to the movable contact connected with the fan inverter circuit.

Detailed description of the invention

As shown in fig. 9, the fan motor is a three-phase motor, and the windings (32a, 32b, 32c) of the fan motor are directly connected in series with a direct current negative bus 1092. The electric connection portion 1046 includes a fifth connection line 1075 and a sixth connection line 1076. The switching component 1044 includes: an eighth switching piece 1058, a ninth switching piece 1059, and a tenth switching piece 1060.

The eighth switching element 1058 is a single-pole single-throw switch, and the ninth switching element 1059 and the tenth switching element 1060 are single-pole double-throw switches. The second drive motor 3 is a three-phase motor comprising three sets of windings (32a, 32b, 32 c). A stationary contact of the ninth switching member 1059 is connected to a phase winding 32a of the second driving motor 3, and two moving contacts are connected to the fifth connection line 1075 and the second inverter circuit 4, respectively. A stationary contact of the tenth switching member 1060 is connected to the other phase winding 32b of the second driving motor 3, and two moving contacts are connected to the sixth connection line 1076 and the second inverter circuit 4, respectively.

When the whole machine is in a non-drying state, the eighth switching piece 1058 is opened, the ninth switching piece 1059 is closed to the moving contact connected with the fifth connection line 1075, and the tenth switching piece 1060 is closed to the moving contact connected with the sixth connection line 1076.

When the whole machine is in a drying state, the eighth switching piece 1058 is closed, the ninth switching piece 1059 is closed to the movable contact connected with the fan inverter circuit, and the tenth switching piece 1060 is closed to the movable contact connected with the fan inverter circuit.

Detailed description of the preferred embodiment

As shown in fig. 10, the difference from the third embodiment is that: the fan motor adopts a two-phase motor, and windings (32a and 32b) of the fan motor are directly connected in series with a direct current positive bus 1090.

The working principle is the same as that of the specific embodiment, and is not described herein.

Detailed description of the preferred embodiment

As shown in fig. 11, the difference from the fourth embodiment is that: the fan motor adopts a two-phase motor, and windings (32a and 32b) of the fan motor are directly connected in series with a direct-current negative bus 1092.

The working principle is the same as that of the fourth embodiment, and details are not described herein.

Detailed description of the preferred embodiment

As shown in fig. 12, the fan motor is a three-phase motor, and windings (32a, 32b, 32c) of the fan motor are connected in series to a dc positive bus 1090 via an inverted H-bridge freewheeling diode. The blower inverter circuit and the drum motor inverter circuit share the rectifier circuit 1096.

The switching assembly 1044 includes the seventh switch 1057. The electrical connection portion 1046 includes a connection wire 1070. The seventh switching element 1057 is a single-pole double-throw switch, the stationary contact is connected to the dc positive bus 1090, the two moving contacts are connected to the first control circuit 102 and one end of the connection line 1070, and the other end of the connection line 1070 is connected to the windings (32a, 32b, 32c) of the second driving motor 3. The positive and negative poles of the fan inverter circuit are respectively connected with the positive and negative poles filtered by the filter circuit 1024.

When the whole machine is in a non-drying state, the seventh switching piece 1057 is closed to the movable contact connected to the connection line 1070.

When the whole machine is in a drying state, the seventh switching piece 1057 is closed to the movable contact connected with the filter circuit 1024.

Detailed description of the preferred embodiment

As shown in fig. 13, the fan motor is a three-phase motor, and windings (32a, 32b, 32c) of the fan motor are connected in series to a negative dc bus 1092 via an inverted H-bridge freewheeling diode. The blower inverter circuit and the drum motor inverter circuit share the rectifier circuit 1096.

The switching assembly 1044 includes an eleventh switching part 1061. The electrical connection portion 1046 includes a connection wire 1070. The eleventh switching element 1061 is a single-pole double-throw switch, the stationary contact is connected to the negative dc bus 1092, the two moving contacts are respectively connected to the filter circuit 1024 and one end of the connection line 1070, and the other end of the connection line 1070 is connected to the windings (32a, 32b, 32c) of the second driving motor 3. The positive and negative poles of the fan inverter circuit are respectively connected with the positive and negative poles filtered by the filter circuit 1024.

When the whole machine is in a non-drying state, the eleventh switching part 1061 is closed to the movable contact connected to the connection line 1070.

When the whole machine is in a drying state, the eleventh switching part 1061 is closed to the movable contact connected to the filter circuit 1024.

Detailed description of the preferred embodiment

As shown in fig. 14, the difference from the seventh embodiment is that: the fan motor adopts a two-phase motor, and windings (32a and 32b) of the fan motor are connected in series with a direct current positive bus 1090 through an inverse H-bridge freewheeling diode.

The working principle is the same as that of the seventh embodiment, and details are not described herein.

Detailed description of the preferred embodiment

As shown in fig. 15, the difference from the eighth embodiment is that: the fan motor adopts a two-phase motor, and windings (32a and 32b) of the fan motor are connected in series with a direct current negative bus 1092 through an inverse H bridge freewheeling diode.

The working principle is the same as that of the eighth embodiment, and details are not described herein.

In conclusion, through the design, the function of the incoming line reactor is integrated in the motor controller, and the motor controller is fixed on the rear end cover of the drum driving motor, so that the integration level of the washing machine system can be effectively improved, the production efficiency is improved, the material cost is reduced, the utilization rate of the internal space of the washing machine is improved, and convenience is brought to the optimization of the internal wiring design and the structural design of the washing machine.

In this application, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

A motor controller of an electric appliance including a first drive motor and a second drive motor, an operation power of the first drive motor being larger than an operation power of the second drive motor, wherein the motor controller comprises:

the first control circuit is electrically connected with the first driving motor and the second driving motor and is used for controlling the first driving motor and the second driving motor to operate; and

a second control circuit electrically connected to the winding of the second drive motor for controlling the winding of the second drive motor to function as a reactor.
The motor controller of an electric appliance according to claim 1,

the motor controller comprises a power supply circuit, wherein the power supply circuit is used for connecting an external power supply;

the second control circuit is used for enabling the winding of the second driving motor to be selectively connected into the power circuit.
The motor controller of an electric device according to claim 2,

the first control circuit is electrically connected with the power supply circuit;

the second control circuit is electrically connected with the power supply circuit, the second control circuit comprises an assembly switching circuit, the assembly switching circuit comprises a connecting circuit and a switching piece arranged on the connecting circuit, the connecting circuit enables the winding of the second driving motor to be connected into the power supply circuit in series, and the switching piece is used for controlling the connection and disconnection of the connecting circuit according to the state of the electrical equipment, so that the winding of the second driving motor is selectively connected into the power supply circuit in series.
The motor controller of an electric device according to claim 3, wherein the first control circuit comprises:

the first inverter circuit is electrically connected with the first driving motor; and

and the second inverter circuit is electrically connected with the second driving motor and is connected with the first inverter circuit in parallel.
The motor controller of the electric device according to claim 4, wherein the power supply circuit includes:

the rectification main circuit is used for connecting the external power supply; and

the filter circuit is connected with the main rectifier circuit and the first control circuit;

a direct current bus is connected between the main rectifier circuit and the filter circuit, and the component switching circuit is connected to the direct current bus, so that a winding of the second drive motor is connected in series to the direct current bus.
The motor controller of an electric device according to claim 5,

the direct current bus comprises a direct current positive bus; the switching piece is connected to the direct current positive bus and used for controlling the direct current positive bus to be conducted with a winding of the second driving motor or directly conducted with the filter circuit; or

The direct current bus comprises a direct current negative bus; the switching piece is connected to the direct current negative bus and used for controlling the direct current negative bus to be conducted with a winding of the second driving motor or directly conducted with the filter circuit.
The motor controller of an electrical device according to any of claims 3 to 6, wherein the component switching circuit is specifically configured to:

when the electrical equipment is in a state corresponding to the operation of the first driving motor, the switching piece controls the connecting circuit to be in a conducting state, so that a winding of the second driving motor is connected in series to the power circuit;

when the electrical equipment is in a state corresponding to the operation of the second driving motor, the switching piece controls the connecting circuit to be in a disconnection state, so that the winding of the second driving motor is disconnected from the power circuit.
A motor controller of an electric appliance including a first drive motor and a second drive motor, an operation power of the first drive motor being larger than an operation power of the second drive motor, wherein the motor controller comprises:

the first control circuit is electrically connected with the first driving motor and is used for controlling the first driving motor to operate; and

a second control circuit electrically connected to the winding of the second drive motor for controlling the winding of the second drive motor to function as a reactor.
The motor controller of an electric device according to claim 8,

the motor controller comprises a power supply circuit, wherein the power supply circuit is used for connecting an external power supply;

the second control circuit is used for enabling the winding of the second driving motor to be selectively connected into the power supply circuit.
The motor controller of an electric device according to claim 9,

the first control circuit is electrically connected with the power supply circuit;

the second control circuit is electrically connected with the power supply circuit and comprises an assembly switching circuit, the assembly switching circuit comprises an electric connection part and a switching assembly arranged on the electric connection part, the electric connection part connects the winding of the second driving motor in series to the power supply circuit, and the switching assembly is used for controlling the on-off of the electric connection part according to the state of the electrical equipment so as to enable the winding of the second driving motor to be selectively connected in series to the power supply circuit.
The motor controller of an electrical device of claim 10, wherein the component switching circuit is specifically configured to:

when the electrical equipment is in a state corresponding to the operation of the first driving motor, the switching component controls the electric connection part to be in a conducting state, so that a winding of the second driving motor is connected in series to the power circuit;

when the electrical equipment is in a state corresponding to the operation of the second driving motor, the switching assembly controls the electric connection part to be in a disconnected state, so that the winding of the second driving motor is disconnected with the power circuit.
The motor controller of an electrical appliance according to claim 11, wherein the power circuit comprises:

the alternating current power supply access circuit comprises an alternating current power supply positive end and an alternating current power supply negative end; and

and the rectifying circuit is connected with the alternating current power supply access circuit and the first control circuit.
The motor controller of an electric device according to claim 12,

the assembly switching circuit is connected between the positive end of the alternating current power supply and the rectifying circuit, so that the winding of the second driving motor is connected between the positive end of the alternating current power supply and the rectifying circuit in series.
The motor controller of an electrical appliance according to claim 13, wherein the electrical connection portion includes a first connection line and a second connection line, the switching assembly comprising:

the first switching piece is connected between the positive end of the alternating current power supply and the rectifying circuit in series and used for controlling the connection and disconnection between the positive end of the alternating current power supply and the rectifying circuit, and two ends of the first switching piece are respectively connected with one end of the first connecting circuit and one end of the second connecting circuit;

the second switching piece is connected to the other end of the first connecting circuit and used for controlling a phase winding of the second driving motor to be conducted with the first connecting circuit or a second inverter circuit of the second driving motor; and

and the third switching piece is connected to the other end of the second connecting circuit and used for controlling the conduction of the other phase winding of the second driving motor and the second connecting circuit or the conduction of the other phase winding of the second driving motor and a second inverter circuit of the second driving motor.
The motor controller of an electric device according to claim 12,

the component switching circuit is connected to the direct current bus rectified by the rectifying circuit, so that the winding of the second driving motor is connected to the direct current bus in series.
The motor controller of an electric appliance according to claim 15, wherein the rectification circuit comprises:

the rectification main circuit is connected with the alternating current power supply access circuit; and

the filter circuit is connected with the main rectifier circuit and the first control circuit, and the direct current bus is connected between the main rectifier circuit and the filter circuit.
The motor controller of an electric device according to claim 16,

the direct current bus comprises a direct current positive bus;

the assembly switching circuit is connected to the direct current positive bus, so that the winding of the second driving motor is connected to the direct current positive bus in series.
The electric machine controller of the electrical device of claim 17, wherein the electrical connection comprises a third connection line and a fourth connection line, the switching assembly comprising:

the fourth switching piece is connected to the direct current positive bus and used for controlling the on-off between the direct current positive bus and the filter circuit, and two ends of the fourth switching piece are respectively connected with one end of the third connecting line and one end of the fourth connecting line;

the fifth switching piece is connected to the other end of the third connecting line and used for controlling a phase winding of the second driving motor to be conducted with the third connecting line or a second inverter circuit of the second driving motor; and

and the sixth switching piece is connected to the other end of the fourth connecting line and used for controlling the conduction of the other phase winding of the second driving motor and the fourth connecting line or the conduction of the other phase winding of the second driving motor and a second inverse circuit of the second driving motor.
The motor controller of an electric device according to claim 17,

the motor controller further comprises a second inverter circuit, and the second inverter circuit is electrically connected with a winding of the second driving motor;

the first control circuit comprises a first inverter circuit, and the second inverter circuit is connected with the first inverter circuit in parallel;

the rectification circuit is also connected with the second inverter circuit;

the switching assembly comprises a seventh switching piece, and the seventh switching piece is connected to the direct current positive bus and is used for controlling the direct current positive bus to be conducted with the winding of the second driving motor or directly conducted with the filter circuit.
The motor controller of an electric device according to claim 16,

the direct current bus comprises a direct current negative bus;

the assembly switching circuit is connected into the direct current negative bus, so that a winding of the second driving motor is connected into the direct current negative bus in series.
The electric machine controller of the electrical device of claim 20, wherein the electrical connection comprises a fifth connection line and a sixth connection line, the switching assembly comprising:

the eighth switching piece is connected to the direct current negative bus and used for controlling the on-off between the direct current negative bus and the filter circuit, and two ends of the eighth switching piece are respectively connected with one end of the fifth connecting line and one end of the sixth connecting line;

the ninth switching piece is connected to the other end of the fifth connecting line and used for controlling a phase winding of the second driving motor to be conducted with the fifth connecting line or a second inverter circuit of the second driving motor; and

and the tenth switching piece is connected to the other end of the sixth connecting line and used for controlling the conduction of the other phase winding of the second driving motor and the sixth connecting line or the conduction of the other phase winding of the second driving motor and a second inverter circuit of the second driving motor.
The motor controller of an electric device according to claim 20,

the motor controller further comprises a second inverter circuit, and the second inverter circuit is electrically connected with a winding of the second driving motor;

the first control circuit comprises a first inverter circuit, and the second inverter circuit is connected with the first inverter circuit in parallel;

the rectification circuit is also connected with the second inverter circuit;

the switching assembly comprises an eleventh switching piece, and the eleventh switching piece is connected to the direct current negative bus and is used for controlling the direct current negative bus to be conducted with the winding of the second driving motor or directly conducted with the filter circuit.
The motor controller of electric device according to any one of claims 10 to 22,

the switching assembly includes at least one switch, and the kind of the switch includes at least one of a switching element and a relay.
An electric motor apparatus of an electric appliance, comprising:

a motor controller of the electrical apparatus of any one of claims 1 to 23; and

and the first driving motor is electrically connected with a first control circuit of the motor controller.
The electric device motor apparatus of claim 24,

the first driving motor comprises a shell, the shell comprises a rear end cover, and the motor controller is fixed on the rear end cover.
An electrical device, comprising:

motor means of the electrical apparatus of claim 24 or 25; and

and a winding of the second drive motor is electrically connected with a second control circuit of the motor device.
The electrical device of claim 26,

the electrical equipment comprises a main control board which is electrically connected with a power circuit of the motor device.
The electrical device of claim 27,

the main control board communicates with a motor controller of the motor device through a communication device, issues an instruction to the motor controller through the communication device, and receives information fed back by the motor controller.
The electrical device of any one of claims 26 to 28,

the second drive motor comprises a two-phase motor; or

The second drive motor comprises a three-phase motor.
The electrical device of any one of claims 26 to 28,

the electrical equipment comprises a drum washing machine, a first driving motor of the motor device comprises a drum motor, and a second driving motor of the motor device comprises a fan motor; or

The electrical equipment comprises an air conditioner, a first driving motor of the motor device comprises a compressor motor, and a second driving motor comprises a fan motor; or

The electrical equipment comprises a water heater, a first driving motor of the motor device comprises a compressor motor, and a second driving motor of the motor device comprises a fan motor; or

The electrical equipment comprises a refrigerator, the first drive motor of the motor device comprises a compressor motor, and the second drive motor comprises a fan motor.