CN117809442A - Load switching circuit, load switching method and household appliance - Google Patents

Abstract

The application discloses a load switching circuit, a load switching method and household equipment, wherein a receiving module, a control module, a resistive load module and an inductive load module. The receiving module acquires an instruction signal; the receiving module sends the instruction signal to the control module; the control module determines a load module corresponding to the instruction signal according to the instruction signal, selectively controls the resistive load module or the inductive load module to work, receives the control signal transmitted by the control module through the receiving module, transmits the control signal to the resistive load module and the inductive load module, and selects whether the resistive load module works or the inductive load module works according to the specific instruction of the control signal, so that the different load type modules work according to the user requirements, and the problem that the topology circuit requirements required by different loads are different is solved.

Description

Load switching circuit, load switching method and household appliance

Technical Field

The present disclosure relates to the field of circuit control technologies, and in particular, to a load switching circuit, a load switching method, and a home appliance.

Background

With the increasing level of living of users, the demand for product functions is increasing. In a household device, a conventional high-power radio receiving part load is single, but for some special occasions, a plurality of loads exist at the same time, but the requirements of the plurality of loads on a receiving topological circuit are completely different, and the problem to be solved is to provide a circuit capable of adapting to the requirements of the plurality of loads.

Disclosure of Invention

In view of the above, the present invention proposes a load switching circuit, a load switching method, and a home appliance to improve the above.

In a first aspect, embodiments of the present application provide a load switching circuit, including: the receiving module comprises a receiving port and a first port, wherein the receiving port is used for receiving instruction signals; the control module comprises a transmitting port and a first port, and the transmitting port of the control module is electrically connected with the receiving port of the receiving module and receives the instruction signal; the resistive load module comprises a first port and a second port, the first port of the resistive load module is connected with the first port of the receiving module, the second port of the resistive load module is connected with the first port of the control module, and the control module controls the resistive load module to work according to the instruction signal; the inductive load module comprises a first port and a second port, the first port of the inductive load module is connected with the first port of the receiving module, the second port of the inductive load module is connected with the first port of the control module, and the control module controls the inductive load module to work according to the instruction signal.

In a second aspect, an embodiment of the present application further provides a load switching method, where the method is used in the load switching circuit described in the first aspect, and the method includes: the receiving module acquires an instruction signal; the receiving module sends the instruction signal to the control module; and the control module determines a load module corresponding to the instruction signal according to the instruction signal, and selectively controls the resistive load module or the inductive load module to work.

In a third aspect, embodiments of the present application further provide a home appliance, including: the device body and the load switching circuit according to the first aspect are disposed on the device body.

The present invention provides a load switching circuit, comprising: the system comprises a receiving module, a control module, a resistive load module and an inductive load module. The receiving module acquires an instruction signal; the receiving module sends the instruction signal to the control module; the control module determines a load module corresponding to the instruction signal according to the instruction signal, selectively controls the resistive load module or the inductive load module to work, receives the control signal transmitted by the control module through the receiving module, transmits the control signal to the resistive load module and the inductive load module, and selects whether the resistive load module works or the inductive load module works according to the specific instruction of the control signal, so that the different load type modules work according to the user requirements, and the problem that the topology circuit requirements required by different loads are different is solved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required for the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application, but not all embodiments. All other embodiments and figures obtained by those skilled in the art without any inventive effort based on the embodiments herein fall within the scope of the present invention.

Fig. 1 shows a schematic structural diagram of a load switching circuit according to an embodiment of the present application.

Fig. 2 shows a schematic structural diagram of another load switching circuit according to an embodiment of the present application.

Fig. 3 shows a schematic structural diagram of still another load switching circuit according to an embodiment of the present application.

Fig. 4 shows a schematic structural diagram of still another load switching circuit according to an embodiment of the present application.

Fig. 5 shows a schematic structural diagram of a further load switching circuit according to an embodiment of the present application.

Fig. 6 shows a schematic structural diagram of another load switching circuit according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of another load switching circuit according to an embodiment of the present application.

Fig. 8 shows a schematic structural diagram of another load switching circuit according to an embodiment of the present application.

Fig. 9 shows a schematic structural diagram of still another load switching circuit according to an embodiment of the present application.

Fig. 10 shows a schematic structural diagram of still another load switching circuit according to an embodiment of the present application.

Fig. 11 shows a flow chart of a load switching method according to an embodiment of the present application.

Fig. 12 shows a flowchart of another load switching method according to an embodiment of the present application.

Fig. 13 shows a block diagram of a home appliance according to an embodiment of the present application.

Detailed Description

In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application.

When multiple load types exist on a circuit at the same time, the conversion of the multiple loads cannot be realized by simple series connection or parallel connection due to the different circuit topologies required by each load. In some special cases, the resistive load and the inductive load exist simultaneously, for example, a wall breaking machine, the motor of the wall breaking machine drives the inductive load, but the heating disc heats the resistive load, the two loads are completely different from each other in terms of receiving topological circuit requirements, for example, the inductive load can bring the inductive characteristic into the inductive characteristic to change the receiving frequency of the inductive load, and if the resistive load is placed at the rear of the bridge stack, the high-frequency rectifying pressure of the bridge stack can be increased.

The inventor proposes a load switching circuit, a load switching method and a household appliance provided by the application, wherein the load switching circuit comprises: the device comprises a receiving module, a control module, a resistive load module and an inductive load module, wherein the receiving module acquires instruction signals; the receiving module sends the instruction signal to the control module; the control module determines a load module corresponding to the instruction signal according to the instruction signal, selectively controls the resistive load module or the inductive load module to work, receives the control signal transmitted by the control module through the receiving module, transmits the control signal to the resistive load module and the inductive load module, and selects whether the resistive load module works or the inductive load module works according to the specific instruction of the control signal, so that the different load type modules work according to the user requirements, and the problem that the topology circuit requirements required by different loads are different is solved.

The load switching circuit provided in the embodiment of the present application will be described in detail by way of specific embodiments.

Referring to fig. 1, an embodiment of the present application provides a load switching circuit, and the load switching circuit 100 includes: a receiving module 110, a control module 140, a resistive load module 120, and an inductive load module 130. The receiving module 110 is electrically connected to the control module 140, and the receiving module 110 is further connected to the resistive load module 120 and the inductive load module 130, respectively.

In an embodiment of the present application, the receiving module 110 may include a receiving port (not shown in the drawings) for receiving a command signal of a user and a control signal of the control module 140, a first port 110a, and a second port 110 b.

Specifically, the receiving module 110 is provided with a receiving coil, which may be a wireless signal receiving coil, and the receiving coil receives a command signal of a user through a wireless transmission technology. Wireless transmission technology transmits signals through electromagnetic waves.

In some embodiments, the receiving coil may also be a wireless charging receiving coil, when the transmitting coil inside the charging stand is powered with alternating current, a magnetic field is generated, so that the receiving coil in the receiving module 110 generates an induced voltage, and the circuit is powered by the induced voltage. Wireless charging technologies can be classified into non-radiative charging technologies and radiative charging technologies. Non-radiative charging techniques couple inductively between coils, and energy is transferred through a magnetic field. Examples of applications are electric toothbrush charging, etc. The specific function of the receiving coil can be selected according to the actual use requirement, and the application is not limited to this.

In an embodiment of the present application, as shown in fig. 1, the control module 140 may include a transmitting port (not shown in the figure) and a first port 140a, where the transmitting port of the control module 140 is electrically connected to the receiving port of the receiving module 110 and receives a control signal transmitted by the control module 140.

In one embodiment, the control module 140 may include an integrated circuit chip, for example, a single chip microcomputer, and uses a very large scale integrated circuit technology to integrate functions such as a central processing unit central processing unit with data processing capability, abbreviated as CPU, a random access memory, a read-only memory, various ports and interrupt systems, a timer/counter, and a transmitter into a small and complete microcomputer system formed on a single silicon chip. The control module 140 receives a command signal from a user, and is electrically connected to the receiving module 110 through a transmitter, so as to transmit the control signal, so that the circuit operates according to the command signal from the user.

Optionally, the integrated circuit chip may be an STM32 single-chip microcomputer, or may be an integrated circuit chip such as a 51 single-chip microcomputer, which may be specifically selected according to actual needs, which is not limited in this application.

In another embodiment, the control module 140 may also be a programmable logic controller (Programmable Logic Controller, abbreviated as PLC), which is a digital electronic device with a microprocessor, and is used for automatic control, and can load control instructions into the memory at any time for storage and execution. The programmable controller is composed of an internal CPU, an instruction and data memory, an input/output unit, a power module, a digital analog unit and the like. The user transmits an instruction signal through the PLC, and the instruction signal is transmitted to the receiving port of the receiving module 110 at the transmitting port of the PLC.

In the embodiment of the present application, the resistive load module 120 includes a first port 120a and a second port 120b, the first port 120a of the resistive load module 120 is connected to the first port 110a of the receiving module 110, the second port 120b of the resistive load module 120 is connected to the first port 140a of the control module 140, and the control module 140 controls the resistive load module 120 to operate according to the command signal.

The first port 110a of the receiving module 110 is connected to the first port 120a of the resistive load module 120, and the control signal received by the receiving module 110 may be transferred to the resistive load module 120 by using a circuit, so that the resistive load module 120 operates according to the control signal. And the second port 120b of the resistive load module 120 is further connected to the first port 140a of the control module 140, and the control module 140 can monitor whether the resistive load module 120 is operating normally.

In some embodiments, referring to fig. 2, the resistive load module 120 includes a second controller 121 and a resistive load 122.

The second controller 121 includes a first port 121a and a second port 121b, and the resistive load includes a first port 122a and a second port 122b. The first port 121a of the second controller 121 is connected to the second port 110b of the receiving module 110, the second port of the second controller 121 is connected to the first port 122a of the resistive load 122, the second port 122b of the resistive load 122 is connected to the first port 140a of the control module 140, and the second controller 121 is configured to control the resistive load 122 to operate.

The resistive load 122 is a pure resistive load that is resistive when the load current load voltage has no phase difference compared to the power supply, and that is, is operated by a resistive element alone, which is called a resistive load. Common devices using resistive loads include tungsten-iodine lamps, incandescent lamps, resistance furnaces, ovens, and electric water heaters, which use resistive loads such as heating tubes to emit light and heat by using resistance characteristics.

The second controller 121 is used for controlling whether the resistive load 122 works, and the second controller 121 may be a switch controller or a relay, and may specifically be selected according to actual needs, which is not limited in this application.

When the transmitting port of the control module 140 transmits a control signal related to the operation of the resistive load 122 to the receiving port of the receiving module 110, the first port 110a of the receiving module 110 transmits the control signal to the first port 121a of the second controller 121, the second controller 121 is closed, and the second port 121b of the second controller 121 transmits the control signal to the resistive load 122 through the first port 122a of the resistive load 122, and the resistive load 122 operates. The first port 140a of the control module 140 is further connected to the second port 122b of the resistive load 122, so that a user can conveniently monitor whether the resistive load 122 works normally.

In the embodiment of the present application, the inductive load module 130 includes a first port 130a and a second port 130b, the first port 130a of the inductive load module 130 is connected to the first port 110a of the receiving module 110, the second port 130b of the inductive load module 130 is connected to the first port 140a of the control module 140, and the control module 140 controls the inductive load module 130 to operate according to the command signal.

The inductive load module 130 is connected in parallel with the resistive load module 120, and when the instruction signal is to instruct the inductive load module 130 to operate, the resistive load module 120 does not operate, and the control module is convenient for controlling the inductive load module 130 and the resistive load module 120.

In some embodiments, referring to fig. 3, the inductive load module 130 may include: a rectifier 131 and an inductive load 132; the rectifier 131 includes a first port 131a, a second port 131b, a third port 131c and a fourth port 131d, the inductive load 132 includes a first port 132a and a second port 132b, the first port 131a of the rectifier 131 is connected to the first port 110a of the receiving module 110, the second port 131b of the rectifier 131 is connected to the first port 132a of the inductive load 132, the second port 132b of the inductive load 132 is connected to the third port 131c of the rectifier 131, the fourth port 131d of the rectifier 131 is connected to the first port 140a of the control module 140, and the rectifier 131 is used for converting the current flowing through the rectifier 131 into the current applicable to the inductive load 132.

The rectifier 131 may convert the ac power into the dc power, or may convert the dc power into the ac power, and the specific conversion mode may be selected according to the actual implementation, which is not limited in this application.

Alternatively, the rectifier 131 may be a bridge rectifier, and may be an inverter.

Inductive load 132 may refer to a load with an inductance parameter. Specifically, it should be an inductive load, such as a transformer, a motor, etc., that has a phase difference characteristic of load current lagging load voltage. Another means that some devices consume reactive power when they consume active power, and are loaded by a coil.

Specifically, the rectifier 131 rectifies the current flowing into the inductive load 132 into alternating current, ensuring the normal operation of the inductive load 132. Meanwhile, the rectifier 131 can avoid working high-frequency rectification pressure, and the normal working of the circuit can be ensured only by rectifying once.

Specifically, referring to fig. 4, the inductive load module 130 further includes a first controller 133, where the first controller 133 includes a first port 133a and a second port 133b; the first port 133a of the first controller 133 is connected to the second port 131b of the rectifier, the second port 133b of the first controller 133 is connected to the first port 132a of the inductive load 132, and the first controller 133 controls the inductive load 132 to operate.

The first controller 133 is configured to control whether the inductive load 132 operates, and the first controller 133 may be a switch controller or a relay, and may specifically be selected according to actual needs, which is not limited in this application.

The present invention provides a load switching circuit 100, comprising: the device comprises a receiving module 110, a control module 140, a resistive load module 120 and an inductive load module 130, wherein the receiving module 110 acquires a command signal; the receiving module 100 sends the instruction signal to the control module 140; the control module 140 determines a load module corresponding to the instruction signal according to the instruction signal, selectively controls the resistive load module 120 or the inductive load module 130 to work, receives the control signal transmitted by the control module 140 through the receiving module 110, transmits the control signal to the resistive load module 120 and the inductive load module 130, and selects whether the resistive load module 120 works or the inductive load module 130 works according to a specific instruction of the control signal, thereby realizing the work of different load type modules according to the user requirement and overcoming the problem of different topological circuit requirements required by different loads.

In some embodiments of the present application, referring to fig. 5, the load switching circuit 100 may further include a main control switch module 150, where the main control switch module 150 includes a first port 150a and a second port 150b, the first port 150a of the main control switch module 150 is connected to the first port 110a of the receiving module, the second port 150b of the main control switch module 150 is connected to the first port 120a of the resistive load module, and the main control switch module 150 is used for controlling the circuit to work.

The main control switch module 150 is disposed among the receiving module 110, the resistive load module 120 and the inductive load module 130, and controls the voltage flowing out of the receiving module 110 to flow into the resistive load module 120 or the inductive load module 130. The controller in the resistive load module 120 and the inductive load module 130 can be prevented from being in a high-voltage ignition state for a long time by controlling the operation of the main control switch module 150, so that the loss of the service life of the controller is delayed.

In some embodiments, referring to fig. 6, the master control module 150 further includes a third controller 152 and a master control switch 151, the third controller 152 includes a first port 152a and a second port 152b, and the master control switch 151 includes a first port 151a, a second port 151b and a third port 151c; the first port 151a of the master switch 151 is connected to the second port 110b of the receiving module 110 and the first port 152a of the third controller 152, the second port 151b of the master switch 150 is connected to the second port 152b of the third controller 152, the third port 151c of the master switch 150 is connected to the first port 122a of the resistive load, and the third controller 152 is configured to control whether the master switch 151 is closed.

Specifically, the main control switch 151 may be a silicon controlled rectifier, which has three poles, namely an anode, a cathode and a control pole, and the die is a four-layer structure formed by overlapping a P-type conductor and an N-type conductor, and has three PN junctions, which are structurally quite different from a silicon rectifying diode having only one PN junction. When the silicon controlled rectifier is applied, the current or voltage of the anode can be controlled to be very large as long as the small current or voltage is applied to the control electrode. The anode corresponds to the first port 151a of the main control switch 151, the cathode corresponds to the third port 151c of the main control switch 151, and the control corresponds to the second port 151b of the main control switch 151. The second port 151b of the main control switch 151 is connected to the third controller 152, and when the voltage flowing through the third controller 152 is small, the anode can control a large voltage.

The third controller 152 may be an optocoupler that may operate at zero voltage, so that the voltage flowing through the third controller 152 is 0, and the master switch 151 may control a large voltage for the loop to operate.

In other embodiments, referring to fig. 7, the load switching circuit 100 further includes a zero-crossing detection module 160, where the zero-crossing detection module 160 includes a first port 160a and a second port 160b, the first port 160a of the zero-crossing detection module 160 is connected to the second port 122b of the resistive load 122, the second port 160b of the zero-crossing detection module 160 is connected to the first port 140a of the control module, and the zero-crossing detection module 160 is configured to detect whether the circuit is operating normally.

The zero-crossing detection module 160 is configured to detect a zero-crossing signal, thereby detecting whether the third controller 152 is turned on. The zero-crossing detection module 160 transmits the detected data to the control module 140, and if the third controller 152 is not turned on, the control module 140 sends an instruction signal to the receiving module 110 again, so that the third controller 152 is turned on, and the circuit is turned on and operates according to the instruction signal.

In yet another embodiment, referring to fig. 8, the receiving module 110 further includes a second port 110b, the control module 140 further includes a second port 140b, the load switching circuit 110 further includes a voltage detection module 170, a first port 170a, a second port 170b and a third port 170c of the voltage detection module 170, the first port 170a of the voltage detection module 170 is connected to the first port 110a of the receiving module 110, the second port 170b of the voltage detection module 170 is connected to the second port 110b of the receiving module 110, the third port 170c of the voltage detection module 170 is connected to the second port 140b of the control module 140, and the voltage detection module 170 is used for detecting voltage conditions of two ports of the receiving module 110.

The first port 170a and the second port 170b of the voltage detection module 170 are respectively connected with the first port 110a and the second port 110b of the receiving module 110, so that the voltage at two ends of the receiving module 110 can be detected, the voltage of the receiving module 110 is transmitted to the second interface 140b of the control module 140 through the third port 170c of the voltage detection module 170, and the control module 140 adjusts the voltage input into the receiving module 110 according to the voltage at two ends of the receiving module 110, thereby ensuring that the resistive load module 120 and the inductive load module 130 work normally.

In yet another embodiment, referring to fig. 9, the load switching circuit 100 further includes a battery module 180, the battery module 180 supplies power to the load switching circuit, one port of the battery module 180 is grounded, and the battery module 180 is used for supplying power to the whole circuit.

The battery in the battery module 180 may be a secondary battery or a constant voltage lithium battery. The voltage output by the battery module 180 is 5V, and the battery is only used for supplying power to the circuit when the wireless charging transmitting terminal stops working, so as to ensure that the command signal sent by the control module 140 is received, and the circuit can feed back the command signal in time. When the battery is a storage battery, the wireless charging terminal can also charge the battery when communicating with the receiving module 110, so as to ensure that the circuit can normally communicate with the control module 140 when not working.

Referring to fig. 10, fig. 10 is a schematic diagram of a load switching circuit according to an exemplary embodiment of the present application. The receiving module 110 includes a receiving coil and a compensating capacitor forming resonance with the receiving coil, and the receiving coil and the compensating capacitor connected in series form a resonance circuit to filter the electric signal, so as to obtain a real instruction signal of the user. The receiving module 110 further includes a filter capacitor connected in parallel with the resonant circuit, where the filter capacitor not only can filter the ac point in the circuit, but also can make the dc more smooth and stable. The instruction signal screened by the receiving module 110 is transmitted to the main control module 150 along with the filtered direct current, the main control module 150 comprises a silicon controlled rectifier and an optical coupler, the silicon controlled rectifier is used for controlling the on-off of the main loop, and the optical coupler is a switch of the silicon controlled rectifier. When the voltage passing through the optocoupler is zero, the optocoupler is conducted, the silicon controlled rectifier is closed, and the loop is conducted. The conducted loop transmits the command signal to the second port of the main control module 150, and determines whether the resistive load module 120 works or the inductive load module 130 works according to the command signal. If the resistive load module 120 is operating, the relay in the resistive load module 120 is closed and the resistive load 122 begins to operate.

If the inductive load module 130 is operated, the current is first passed through the rectifier bridge to convert the current from dc to ac for the inductive load 132 to operate. The ac current flows through the parallel resonant circuit formed by the capacitor and the inductor, so that the current flowing through the branch circuit is ensured to be greater than the current flowing through the main circuit, and the normal operation of the inductive load 132 is ensured. The inductive load module 130 is further provided with a plurality of series circuits with resistors connected in series, and the series circuits are connected with the resonant circuit in parallel to perform a voltage division function, so that the current flowing through the inductive load 132 is increased, the voltage input by the inductive load 132 is increased, and the working efficiency of the inductive load 132 is improved. The relay in the inductive load module 130 is closed and the inductive load 132 is operated.

Whether the resistive load module 120 or the inductive load module 130 is operated, the voltage is transmitted to the first port 160a of the zero-crossing monitoring module 160, and the voltage signal transmitted by the first port 160a is subjected to a voltage division process by a plurality of resistors. The zero-crossing monitoring module 160 is externally connected with a 5V power supply, the power supply voltage passes through a first diode, and the first diode rectifies the input voltage. The external 5V power supply voltage and the voltage transmitted by the load module are connected with the second port of the control module 140 through the output end of the second diode, and the control module 140 can determine whether the optocoupler is turned on or not. And a capacitor is connected in parallel at the second diode to absorb the excessive reverse current, so that the second diode is prevented from being broken down by the reverse current and damaged.

The first port 170a and the second port 170b of the voltage detection module 170 are connected to two ends of the receiving module 110, respectively, the voltage detection module 170 detects the voltage at two ends of the receiving module 110 and feeds back the voltage to the control module 140, thereby adjusting the voltage of the resistive load module 120 or the inductive load module 130.

Referring to fig. 11, fig. 11 shows a flow chart of a load switching method according to an embodiment of the present application, which is applied to the load switching circuit described above, and the load switching method includes: step S210 to step S230.

Step S210: acquiring an instruction signal;

the user can send out instruction signals to the receiving module through the mobile phone terminal or the computer terminal.

Step S220: transmitting the instruction signal to the control module;

step S230: and determining a load module corresponding to the instruction signal according to the instruction signal, and selectively controlling the resistive load module or the inductive load module to work.

The control module judges the instruction signal so as to control the load module corresponding to the instruction signal to work.

According to the embodiment of the application, the load is specifically controlled to work through the control module, so that the integration of various loads of the radio receiving part is realized, and the radio receiving part can orderly work according to the user instruction.

Referring to fig. 12, fig. 12 is a flowchart illustrating a load switching method according to an exemplary embodiment of the present application.

When the circuit does not work, the circuit is in a standby state, and the battery module is used for communicating the circuit with the transmitting end of the control module. When a work starting command of a user is received, the work command of the user is analyzed, and an instruction signal is obtained. The instruction signal is transmitted to the receiving end of the receiving module by the transmitting end, and the receiving module transmits the instruction signal. When the zero crossing signal is found, the silicon controlled rectifier is closed, the instruction signal is transmitted to the load end, and the instruction signal is judged to be the motor working or the heating tube working. If the motor works, a relay REL2 in the inductive load module is closed, and the motor B1 is started to work. If the heating tube works, the relay REL1 in the resistive load module is closed, the heating tube Res is started to work until the work is finished, and the circuit returns to the standby state again. The receiving module receives the instruction signal and also receives a radio signal, the radio signal at the moment supplies energy to the whole circuit, and the battery module in the circuit is charged, so that the circuit can be communicated with the transmitting end under the standby condition, and the working instruction of a user is fed back in time.

Referring to fig. 13, the embodiment of the present application further provides a home appliance 200, where the home appliance 200 includes: the device body 210 and the load switching circuit 100 described above, wherein the load switching circuit 100 is disposed on the device body 210.

The household device may be a household device that needs to be subjected to temperature detection during operation, optionally, the household device may include a wall breaking machine, a soymilk machine, a cooking machine, or a stirrer.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (11)

1. A load switching circuit, comprising:

the receiving module comprises a receiving port and a first port, wherein the receiving port is used for receiving instruction signals;

the control module comprises a transmitting port and a first port, and the transmitting port of the control module is electrically connected with the receiving port of the receiving module and receives the instruction signal;

the resistive load module comprises a first port and a second port, the first port of the resistive load module is connected with the first port of the receiving module, the second port of the resistive load module is connected with the first port of the control module, and the control module controls the resistive load module to work according to the instruction signal; and

the inductive load module comprises a first port and a second port, the first port of the inductive load module is connected with the first port of the receiving module, the second port of the inductive load module is connected with the first port of the control module, and the control module controls the inductive load module to work according to the instruction signal.

2. The circuit of claim 1, wherein the inductive load module comprises: a rectifier and an inductive load; the rectifier comprises a first port, a second port, a third port and a fourth port, the inductive load comprises the first port and the second port, the first port of the rectifier is connected with the first port of the receiving module, the second port of the rectifier is connected with the first port of the inductive load, the second port of the inductive load is connected with the third port of the rectifier, the fourth port of the rectifier is connected with the first port of the control module, and the rectifier is used for converting current flowing through the rectifier into current applicable to the inductive load.

3. The circuit of claim 2, wherein the inductive load module further comprises a first controller comprising a first port and a second port; the first port of the first controller is connected with the second port of the rectifier, the second port of the first controller is connected with the first port of the inductive load, and the first controller controls the inductive load to work.

4. The circuit of claim 1, wherein the receiving module further comprises a second port, the resistive load module comprises a second controller and a resistive load, the second controller comprises a first port and a second port, and the resistive load comprises a first port and a second port; the first port of the second controller is connected with the second port of the receiving module, the second port of the second controller is connected with the first port of the resistive load, the second port of the resistive load is connected with the first port of the control module, and the second controller is used for controlling the resistive load to work.

5. The circuit of claim 1, wherein the load switching circuit further comprises a master switch module, the master switch module comprising a first port and a second port, the first port of the master switch module being connected to the first port of the receiving module, the second port of the master switch module being connected to the first port of the resistive load module, the master switch module being configured to control operation of the circuit.

6. The circuit of claim 5, wherein the receiving module further comprises a second port, the master control module further comprises a third controller and a master switch, the third controller comprises a first port and a second port, and the master switch comprises a first port, a second port, and a third port; the first port of the main control switch is respectively connected with the second port of the receiving module and the first port of the third controller, the second port of the main control switch is connected with the second port of the third controller, the third port of the main control switch is connected with the first port of the resistive load module, and the third controller is used for controlling whether the main control switch is closed or not.

7. The circuit of claim 1, wherein the load switching circuit further comprises a zero crossing detection module comprising a first port and a second port, the first port of the zero crossing detection module being coupled to the resistive load module second port, the second port of the zero crossing detection module being coupled to the first port of the control module, the zero crossing detection module being configured to detect whether the circuit is operating properly.

8. The circuit of claim 1, wherein the receiving module further comprises a second port, the control module further comprises a second port, the load switching circuit further comprises a voltage detection module, the voltage detection module comprises a first port, a second port and a third port, the first port of the voltage detection module is connected with the first port of the receiving module, the second port of the voltage detection module is connected with the second port of the receiving module, the third port of the voltage detection module is connected with the second port of the control module, and the voltage detection module is configured to detect a voltage condition across the receiving module.

9. The circuit of claim 1, wherein the load switching circuit further comprises a battery module, the battery module powering the load switching circuit, one port of the battery module being grounded, the battery module being for the entire circuit.

10. A load switching method for a load switching circuit according to any of claims 1-9, comprising:

acquiring an instruction signal;

transmitting the instruction signal to the control module;

and determining a load module corresponding to the instruction signal according to the instruction signal, and selectively controlling the resistive load module or the inductive load module to work.

11. A household appliance, comprising:

an apparatus body, and the load switching circuit according to any one of claims 1 to 9, the load switching circuit being provided to the apparatus body.