A home appliance and a control method thereof

Abstract

The application discloses a household appliance and a control method thereof. The household appliance comprises a main control board, a driving board and a power supply control circuit. The main control board comprises a filter circuit, the filter circuit is used for filtering an input alternating voltage and supplying power to a main function load of the household appliance based on the filtered voltage; the driving board is connected to an output end of the filter circuit, and the driving board is used for driving an auxiliary function load of the household appliance; and the power supply control circuit is connected in series between the power input end of the driving board and the output end of the filter circuit, and the power supply control circuit is used for controlling the power input end of the driving board to be disconnected from the filter circuit when the auxiliary function load is stopped. The household appliance and the control method thereof can realize the effect of reducing standby power consumption of the household appliance by arranging the power supply control circuit to control the driving board to be powered off when the auxiliary function load is stopped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit power consumption, in particular to a household appliance and a control method thereof. BACKGROUND

[0002] With the improvement of people's living standards, more and more household appliances are needed in daily life. In order to avoid high power consumption, the standby power consumption of household appliances is also increasing. For example, the standby function of a washing machine has high requirements, and the standby power consumption is usually less than 1W in China. In the related art, the power supply driving module of the household appliance has a large standby power consumption, so that the energy efficiency level of the household appliance is low. SUMMARY

[0003] The purpose of the present application is to provide a household appliance and a control method thereof to solve the technical problems existing in the prior art: how to reduce the standby power consumption of the household appliance.

[0004] To solve the above technical problems, the technical scheme is adopted as follows:

[0005] The present application provides a household appliance, comprising: a main control board, the main control board comprising a filter circuit, the filter circuit being used for filtering an input alternating voltage and supplying power to a main function load of the household appliance based on the filtered voltage; a driving board, a power input end of the driving board being connected to an output end of the filter circuit, the driving board being used for driving an auxiliary function load of the household appliance; and a power control circuit, the power control circuit being connected in series between the power input end of the driving board and the output end of the filter circuit, the power control circuit being used for controlling the power input end of the driving board and the filter circuit to be disconnected when the auxiliary function load ends running.

[0006] In some embodiments, the household appliance further comprises a processor; the power control circuit comprises: a first relay comprising a first normally open switch, a first control pin and a second control pin, the second control pin being connected to a power supply voltage, the first normally open switch being connected in series between the power input end of the driving board and the output end of the filter circuit; a first switch tube, a first end of the first switch tube being connected to the first control pin, a second end of the first switch tube being connected to ground, and a control end of the first switch tube being used for receiving a first control signal sent by the processor to control the state of the first relay; and the processor is used for sending a first control signal for controlling the first relay to be powered off when the auxiliary function load ends running.

[0007] In some embodiments, the driving board comprises a bus capacitor connected in parallel to the input end of the driving board, the power supply control circuit further comprises a current-limiting resistor connected in series with the first normally-open switch, a second relay, and a second switch tube, the second relay comprises a second normally-open switch, a third control pin, and a fourth control pin, the fourth control pin is connected to a power supply voltage, the first end of the second switch tube is connected to the third control pin, the second end of the second switch tube is connected to the ground, and the control end of the second switch tube is used to receive a second control signal sent by the processor to control the state of the second relay; the processor is further configured to control the second relay to remain in a power-off state for a preset time length and then power on when the auxiliary function load is woken up.

[0008] In some embodiments, the power supply control circuit further comprises a first diode connected in parallel to the first relay, wherein the anode of the first diode is connected to the first control pin, and the cathode of the first diode is connected to the second control pin; and a second diode connected in parallel to the second relay, wherein the anode of the second diode is connected to the third control pin, and the cathode of the second diode is connected to the fourth control pin.

[0009] In some embodiments, the current-limiting resistor is a positive temperature coefficient thermistor.

[0010] In some embodiments, the household appliance comprises a plurality of power supply control circuits and a plurality of driving boards, the output end of the filter circuit is connected to the input end of the plurality of power supply control circuits, the output end of the plurality of power supply control circuits is connected to the input end of the plurality of driving boards one by one to control the corresponding driving boards respectively, and the plurality of driving boards are used to drive the corresponding auxiliary function loads respectively; the processor is further configured to control the first relay in the corresponding power supply control circuit to power on and control the second relay in the corresponding power supply control circuit to remain in a power-off state for a preset time length and then power on when any one of the plurality of auxiliary function loads is in a woken-up state, and control the first relay in the corresponding power supply control circuit to power off when any one of the plurality of woken-up auxiliary function loads ends running.

[0011] In some embodiments, the driving board further comprises a rectifier circuit used to convert alternating current output by the power supply control circuit into first direct current, a bus capacitor connected in parallel to the input end of the rectifier circuit, a switching power supply circuit used to convert the first direct current into second direct current, and a driving circuit having an input end connected to the output end of the switching power supply circuit and used to drive the auxiliary function load.

[0012] In some embodiments, the household appliance is a refrigerator, the main functional load comprises a refrigeration machine, and the auxiliary functional load comprises one or more of a vacuum pump, an elevator, and an automatic door opening and closing device.

[0013] The household appliance and the control method thereof according to the embodiments of the present application have at least the following advantages and positive effects:

[0014] In some embodiments, the power control circuit further comprises a current-limiting resistor, a second relay, and a second switch tube, the current-limiting resistor is connected in series with the first normally open switch, the second relay comprises a second normally open switch, a third control pin, and a fourth control pin, the second normally open switch is connected in parallel with the current-limiting resistor, and the fourth control pin is connected to a power supply voltage; a first end of the second switch tube is connected to the third control pin, a second end of the second switch tube is connected to ground, and a control end of the second switch tube is configured to receive a second control signal sent by the processor to control a state of the second relay; and the control method of the household appliance further comprises: when the auxiliary functional load is in the woken-up state, controlling the second relay to remain in a power-off state for a preset time length and then powering on.

[0015] The household appliance and the control method thereof according to the embodiments of the present application have at least the following advantages and positive effects:

[0016] The household appliance and the control method thereof according to the embodiments of the present application have at least the following advantages and positive effects: BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Figure 1 FIG. 1 is a circuit structure schematic diagram of a household appliance according to an embodiment of the present application;

[0019] Figure 2 Circuit diagram of the power control circuit for some embodiments of the present application;

[0020] Figure 3 Flowchart of the control method for the household appliance for some embodiments of the present application;

[0021] Figure 4 Flowchart of the control method for the household appliance for another embodiment of the present application;

[0022] Figure 5 Flowchart of the control method for the household appliance for another embodiment of the present application.

[0023] The reference signs are explained as follows:

[0024] 100, household appliance;

[0025] 1, main control board; 11, filter circuit;

[0026] 111, output end of the filter circuit;

[0027] 2, main functional load;

[0028] 3, drive board;

[0029] 31, power input end;

[0030] 32, rectifier circuit; 321, input end of the rectifier circuit;

[0031] 33, switching power supply circuit; 331, output end of the switching power supply circuit;

[0032] 34, drive circuit; 341, input end of the drive circuit;

[0033] 4, auxiliary functional load;

[0034] 5, power control circuit;

[0035] 51, first switch;

[0036] 511, first relay;

[0037] K1, first normally open switch; 5111, first control pin

[0038] 5112, second control pin;

[0039] 512, first switch tube;

[0040] 5121, first end; 5122, second end;

[0041] 5123, control end;

[0042] 513, first diode;

[0043] 52, second switch;

[0044] 521, second relay;

[0045] K2, second normally open switch; 5211, third control pin;

[0046] 5212, fourth control pin;

[0047] 522, second switch tube;

[0048] 5221, first end; 5222, second end;

[0049] 5223, control end;

[0050] 523, second diode;

[0051] 53, current limiting resistor;

[0052] 6, processor. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0055] The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0056] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "communication", "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] The power supply driving module of the household appliance has a large standby power consumption, so that the energy efficiency grade of the household appliance is low. If the power board driving board is always in the state of having electricity, and generally the power of the power driving board is large, when the functions such as door body vacuumizing, shelf lifting, automatic door opening and closing are not used, the power board driving board will still have a large standby power consumption, thereby causing the household appliance to consume a large amount of electricity.

[0058] Please refer to Figure 1 The household appliance 100 of the embodiment of the present application comprises: a main control board 1, the main control board 1 comprises a filter circuit 11, the filter circuit 11 is used for filtering the input alternating voltage and supplying power to the main function load 2 of the household appliance 100 based on the filtered voltage; a driving board 3, a power input end 31 of the driving board 3 is connected to an output end 111 of the filter circuit 11, the driving board 3 is used for driving the auxiliary function load 4 of the household appliance 100; a power control circuit 5, the power control circuit 5 is connected in series between the power input end 31 of the driving board 3 and the output end 111 of the filter circuit 11, the power control circuit 5 is used for controlling the power input end 31 of the driving board 3 and the filter circuit 11 to be disconnected when the auxiliary function load 4 ends running.

[0059] The household appliance 100 and the control method thereof of the embodiment of the present application drive the auxiliary function load 4 by setting the driving board 3, and control the power-on and power-off of the driving board 3 by setting the power control circuit 5, so as to control the power input end 31 of the driving board 3 and the filter circuit 11 to be disconnected when the auxiliary function load 4 ends running, so that the driving board 3 is powered off, thereby, when the household appliance 100 is in the standby state, that is, the auxiliary function load 4 is not running, the driving board 3 remains powered off, thus, the power consumption of the driving board 3 is reduced to zero in the standby state, and the effect of reducing the standby power consumption of the household appliance 100 is achieved.

[0060] The present application will be further described below with reference to the accompanying drawings.

[0061] The household appliance 100 can be a refrigerator, a washing machine, a television, an air conditioner, etc. The household appliance 100 is taken as a refrigerator for example in the embodiments of the present specification, and it can be understood that the similar structure and method of the embodiments of the present specification can be used to reduce the standby power consumption of other household appliances.

[0062] Please continue to refer to Figure 1 , the household appliance 100 includes a main control board 1, a main function load 2, a drive board 3, an auxiliary function load 4, a power control circuit 5 and a processor 6.

[0063] The main control board 1 includes a filter circuit 11. The filter circuit 11 is used to filter the input 220V alternating voltage to reduce the interference of the power grid fluctuation on the household appliance 100 and improve the operation stability of the household appliance 100.

[0064] The main function load 2 can include a refrigerator, a fan and other loads necessary for maintaining the normal operation of the refrigerator. The main function load 2 is driven by the power supply of the main control board.

[0065] Please continue to refer to Figure 1 , the drive board 3 includes a rectifier circuit 32, a bus capacitor C1, a switching power supply circuit 33 and a drive circuit 34 connected in sequence.

[0066] The rectifier circuit 32 is used to convert the alternating current output by the power control circuit 5 into first direct current. Specifically, the rectifier circuit 32 can be a full-wave rectifier circuit 32, etc., which is not limited in the present application.

[0067] Please continue to refer to Figure 1 , the bus capacitor C1 is connected in parallel to the input end 321 of the rectifier circuit 32 to filter the first direct current output by the rectifier circuit 32, so that the first direct current output by the rectifier circuit 32 is more stable.

[0068] The switching power supply circuit 33 is used to convert the first direct current into second direct current, and the voltage of the second direct current is adapted to the working voltage of the drive circuit 34.

[0069] The input end 341 of the drive circuit 34 is connected to the output end 331 of the switching power supply circuit 33, and the drive circuit 34 is used to drive the auxiliary function load 4.

[0070] The auxiliary function load 4 includes a vacuum pump, an elevator and an automatic door opening and closing device. The vacuum pump is used to realize the vacuumization function of the refrigerator to the preservation box. The elevator is used to realize the automatic lifting function of the shelf of the refrigerator. The automatic door opening and closing device is used to realize the automatic door opening and closing function of the refrigerator. It can be understood that the main function load 2 is driven by the main control board, and the auxiliary function load 4 is driven by the driving board 3, so as to realize the independent control of the on-off of the main function load 2 and the auxiliary function load 4, so that the driving board 3 and the auxiliary function load 4 can be controlled to be powered off in the standby state, thereby reducing the power consumption of the household appliance 100 in the standby state.

[0071] Please refer to Figure 2 The power control circuit 5 includes a first switch 51, a second switch 52 and a current limiting resistor 53. The first switch 51 is connected in series with the second switch 52, and the current limiting resistor 53 is connected in parallel with the second switch 52. In some embodiments, the second switch 52 and the current limiting resistor 53 of the power control circuit 5 can also be omitted.

[0072] The first switch 51 includes a first relay 511, a first diode 513 and a first switch tube 512.

[0073] The first relay 511 includes a first normally open switch K1, a first control pin 5111 and a second control pin 5112. The second control pin 5112 is connected to a power supply voltage 12V output by the main control board 1. The first normally open switch K1 is connected in series between the power input end 31 of the driving board 3 and the output end 111 of the filter circuit 11.

[0074] The first diode 513 is connected in parallel with the first relay 511, wherein the anode of the first diode 513 is connected with the first control pin 5111, and the cathode of the first diode 513 and the second control pin 5112 are connected. The first diode 513 is connected in parallel with the first relay 511, which can avoid the damage to other devices caused by the back electromotive force generated when the relay coil is powered on and powered off, and is beneficial to improve the safety of the circuit.

[0075] The first end 5121 of the first switch tube 512 is connected with the first control pin 5111, and the second end 5122 of the first switch tube 512 is grounded. The control end 5123 of the first switch tube 512 is used to receive the first control signal sent by the processor 6 to control the opening and closing state of the first switch 51, that is, the opening and closing state of the first normally open switch K1 in the first relay 511. The first normally open switch K1 is in an open state when powered off, so that the first switch 51 of the power control circuit 5 is in an open state when the household appliance 100 starts to power on, so that the driving board 3 and the auxiliary load circuit 4 are still in a powered-off state, which can reduce the size of the power-on current when the household appliance 100 starts, and can improve the running stability. In some other embodiments of the present application, the first normally open switch K1 can also be replaced by a first normally closed switch.

[0076] The second switch 52 comprises a second relay 521, a second diode 523 and a second switch tube 522.

[0077] The second relay 521 comprises a second normally open switch K2, a third control pin 5211 and a fourth control pin 5212. The second normally open switch K2 is connected in parallel with the current-limiting resistor 53. The fourth control pin 5212 is connected to the power supply voltage 12V which is output by the main control board 1.

[0078] The second diode 523 is connected in parallel with the second relay 521. In this case, the anode of the second diode 523 is connected to the third control pin 5211, and the cathode of the second diode 523 and the fourth control pin 5212 are connected. The second diode 523 is connected in parallel with the second relay 521, which can avoid the damage to other devices caused by the back electromotive force generated when the relay coil is powered on or powered off, and is conducive to improving the safety of the circuit.

[0079] The first end 5221 of the second switch tube 522 is connected to the third control pin 5211, and the second end 5222 of the second switch tube 522 is connected to the ground. The control end 5123 of the second switch tube 522 is used to receive the second control signal sent by the processor 6 to control the opening and closing state of the second switch 52, that is, the opening and closing state of the second normally open switch K2 in the second relay 521. The second normally open switch K2 is in an open state when powered off, so that the second switch 52 of the power supply control circuit 5 is in an open state when the household appliance 100 is started to power on, which is matched with the first normally open switch K1 in an open state, so that the driving board 3 and the auxiliary load circuit 4 are still in a powered-off state, which can reduce the size of the power-on current when the household appliance 100 is started, and can improve the running stability. In other embodiments of the present application, the second normally open switch K2 can also be replaced by a second normally closed switch.

[0080] Please refer to Figure 1 and Figure 2 Since the bus capacitor C1 of the driving board 3 generally has a large capacitance, for example, the bus capacitor C1 is a capacitor with a capacitance greater than 220uF, which makes the entire driving board 3 a capacitive load relative to the power supply control circuit 5, so that the current flowing through the first relay 511 of the power supply control circuit 5 at the moment of power-on of the driving board 3 may be too large, which has the risk of causing the relay to stick. In this context, certain embodiments of the present application are provided with a current-limiting resistor 53 connected in series with the first switch 51, and also provided with a second switch 52 connected in parallel with the current-limiting resistor 53. It can be understood that the current-limiting resistor 53 connected in series with the first switch 51 can reduce the current flowing through the first relay 511 during the power-on process of the driving board 3, that is, the charging process of the bus capacitor C1, so that the relay sticking can be avoided, and the safety of the circuit can be improved.

[0081] Please continue to refer toFigure 1 and Figure 2 Further, the current-limiting resistor 53 can be a positive temperature coefficient thermistor, that is, the current-limiting resistor 53 can be a PTC (Positive Temperature Coefficient) thermistor. Since the resistance of the positive temperature coefficient thermistor can increase sharply with the increase of temperature, during the charging process of the bus capacitor C1, the current flowing through the PTC thermistor can increase rapidly at the moment of power-on, the greater the current, the more serious the heat generation of the PTC thermistor, the higher the temperature, and the resistance of the thermistor increases sharply with the temperature, so that the thermistor can limit the charging current at the moment of power-on, and realize the protection function of the circuit.

[0082] Please refer to Figure 1 The processor 6 is directly powered by the main control board 1 and is not affected by the opening and closing states of the first switch 51 and the second switch 52 of the power supply control circuit 5. The processor 6 can be integrated on the main control board 1, and the power supply control circuit 5 can also be integrated on the main control board. Since the processor 6 and the power supply control circuit 5 are directly powered by the main control board, direct integration on the main control board is beneficial to the packaging and isolation between different power supplies, and the close physical distance between the processor 6 and the power supply control circuit 5 can reduce the influence of the processor 6 on the interference signal in the control process of the power supply control circuit 5, improve the control speed, and make the control process of the processor 6 on the power supply control circuit 5 faster and more accurate.

[0083] The processor 6 is configured to: when the auxiliary function load 4 is woken up, control the first switch 51 to be closed, and control the second switch 52 to be kept disconnected for a preset time length and then be closed; when the auxiliary function load 4 ends running, control the first switch 51 and the second switch 52 to be disconnected; and when the household appliance 100 is in a standby state, control the first switch 51 and the second switch 52 to be disconnected. The standby state of the household appliance 100 is a state in which all auxiliary function loads 4 do not need to work, and only the main control board 1 and the main function load 2 are maintained in operation. That is, the processor 6 is configured to: when the auxiliary function load 4 ends running, control the power input end 31 of the drive board 3 and the filter circuit 11 to be disconnected by sending a first control signal for controlling the first relay 511 to be powered off, and simultaneously send a second control signal for controlling the second relay 521 to be powered off; when the auxiliary function load is woken up, control the first relay to be powered on, and control the second relay to be kept in a powered-off state for a preset time length and then be powered on. Specifically, the preset time length can be 300 ms, 600 ms, 1 s, 2 s, 3 s, 4 s, 5 s, 6 s, 7 s, 8 s, 9 s, 10 s, etc., which is determined according to the specific circuit. After the first switch 51 is closed for the preset time length, it can be ensured that the bus capacitor C1 has completed charging, so that the drive board 3 is no longer a capacitive load relative to the power supply control circuit 5. Therefore, at this time, the second switch 52 is closed, and the current-limiting resistor 53 is disconnected, so as to avoid the consumption of electric energy by the current-limiting resistor 53 in the subsequent power-on process of the drive board 3, thereby reducing the power consumption in the running process of the auxiliary function load 4, and being beneficial to improving the energy efficiency level of the household appliance 100.

[0084] Therefore, when the auxiliary function load 4 is woken up, the first switch 51 is controlled to be closed, and the second switch 52 is controlled to be kept disconnected for a preset time length and then be closed, so that the drive board 3 and the corresponding auxiliary function load 4 can be powered on while keeping the circuit safe, the diversified functions of the household appliance 100 are realized, various auxiliary functions such as vacuumizing the fresh-keeping box, automatically lifting the refrigerator shelf, and automatically opening and closing the refrigerator door are realized, and the diversified needs of users are met. Meanwhile, when the auxiliary function load 4 ends running, the first switch 51 and the second switch 52 are controlled to be disconnected; and when the household appliance 100 is in a standby state, the first switch 51 and the second switch 52 are controlled to be disconnected, so that when the household appliance 100 is in the standby state, the auxiliary function load 4 and the drive board 3 are kept powered off, the power consumption of the drive board 3 and the auxiliary function load 4 is reduced to zero in the standby state, and the driving circuit 34 of the auxiliary function load 4 is prevented from still consuming power in the standby state, thereby achieving the effect of reducing the standby power consumption of the household appliance 100.

[0085] Please continue to refer to Figure 1When the household appliance 100, i.e. the refrigerator, comprises multiple auxiliary function loads 4, such as a vacuum pump, an elevator and an automatic door opening and closing device, the household appliance 100 can comprise multiple power supply control circuits 5 and multiple drive boards 3 to independently control the power-on and power-off of the vacuum pump, the elevator and the automatic door opening and closing device, respectively. In this case, the input ends of the multiple power supply control circuits 5 are all connected to the output end 111 of the filter circuit 11. The output ends of the multiple power supply control circuits 5 are connected to the input ends of the multiple drive boards 3 one by one to control the corresponding drive boards 3, respectively. The multiple drive boards 3 are used to drive the corresponding auxiliary function loads 4, respectively. The processor 6 is used to, in this case, control the first relay 511 in the corresponding power supply control circuit 5 to be powered on and control the second relay 521 in the corresponding power supply control circuit 5 to be powered on after being kept in a power-off state for a preset time length when any one of the multiple auxiliary function loads 4 is in a woken-up state. The processor 6 is used to control the first relay 511 in the corresponding power supply control circuit 5 to be powered off when any one of the multiple woken-up auxiliary function loads 4 ends running. The processor 6 is used to control all the first relays 511 of the multiple power supply control circuits 5 to be powered off when the household appliance 100 is in a standby state. The multiple auxiliary function loads 4 are controlled and driven by the corresponding multiple power supply control circuits 5 and multiple drive boards 3, respectively, so that when one of the auxiliary function loads 4 and the drive circuit thereof needs to be woken up, other auxiliary function loads 4 and the corresponding drive circuits do not need to be woken up at the same time, the coupling degree between different auxiliary function loads can be reduced, and the standby power consumption of the household appliance 100 can be further reduced. In some other embodiments of the present application, the multiple auxiliary function loads 4 can be controlled and driven by the same power supply control circuit 5 and the same drive board 3, so that the circuit can be simplified.

[0086] Referring to Figure 1 and Figure 3 , the control method of the household appliance in the embodiments of the present application is used for the household appliance 100 in any of the above embodiments. The control method of the household appliance comprises:

[0087] S01: When the auxiliary function load 4 is in a woken-up state, a control signal is sent to the power supply control circuit 5 to control the power supply input end 31 of the drive board 3 to be in communication with the filter circuit 11.

[0088] S02: When the auxiliary function load 4 ends running, a control signal is sent to the power supply control circuit 5 to control the power supply input end 31 of the drive board 3 to be disconnected from the filter circuit 11.

[0089] Referring to Figure 2 and Figure 4 , in some embodiments, the control method of the household appliance further comprises:

[0090] S011: When the auxiliary function load 4 is in the woken-up state, the second relay 521 is controlled to keep in the power-off state for a preset time length and then powered on.

[0091] S021: When the auxiliary function load 4 ends running, a control signal is sent to the power control circuit 5 to control the second relay 521 to be disconnected.

[0092] When the auxiliary function load 4 ends running, a control signal is sent to the power control circuit 5 to control the second relay 521 to be disconnected, which can reduce the power consumption of the circuit and improve the stability of the circuit. In other embodiments of the present application, step S021 can be omitted.

[0093] Please refer to Figure 1 and Figure 5 That is, the control method of the household appliance can include:

[0094] S03: When the auxiliary function load 4 is in the woken-up state, a control signal is sent to the power control circuit 5 to control the power input end 31 of the drive board 3 to be in communication with the filter circuit 11, and the second relay 521 is controlled to keep in the power-off state for a preset time length and then powered on.

[0095] S04: When the auxiliary function load 4 ends running, a control signal is sent to the power control circuit 5 to control the power input end 31 of the drive board 3 to be disconnected with the filter circuit 11, and the second relay 521 is controlled to be disconnected.

[0096] In summary, the household appliance 100 and the control method thereof in the embodiments of the present application achieve the effect of reducing the standby power consumption of the household appliance 100 by setting the drive board 3 to drive the auxiliary function load 4, setting the power control circuit 5 to control the power-on and power-off of the drive board 3, and controlling the drive board 3 to be powered off when the auxiliary function load 4 ends running, so that the drive board 3 keeps powered off when the household appliance 100 is in the standby state, i.e., the auxiliary function load 4 does not run.

[0097] In the description of the embodiments of the present application, any process or method described in the flowchart or otherwise described herein can be understood as representing code modules, segments or portions of code that include one or more executable instructions for implementing the specified logical functions or processes, and the scope of the preferred embodiments of the present application includes additional implementation in which the functions are carried out in different orders, in substantially simultaneous fashion, or in reverse order, according to the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0098] The logic and / or steps represented in the flow diagrams and / or otherwise described herein, for example, can be considered as a sequence of executable instructions, and can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For purposes of this specification, a "computer-readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. The computer-readable medium can be a product of "tangible" processing, such as one or more wires or printed circuit boards (PCBs) (control method), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber device, and a compact disc read-only memory (CDROM). Additionally, the computer-readable medium can be paper or other comparable effectively medium where the program can be printed, since the program can be electronically obtained, for example, by optically scanning the paper or other medium, then

[0099] It should be understood that various parts of the embodiments of the present application can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, a plurality of steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, and as in another embodiment, it can be implemented using any or a combination of the following technologies, which are well-known in the art: a discrete logic circuit having logic gates for implementing logic functions on data signals, an application specific integrated circuit having appropriate combinational logic gates, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0100] The above merely preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Any changes or replacements easily conceived by those skilled in the art within the technical scope of the present application should be encompassed in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A domestic appliance, characterized in that, The household appliance is a refrigerator; comprising: a main control board, the main control board comprising a filter circuit, the filter circuit being used for filtering an input alternating voltage and supplying power to main function loads of the household appliance based on the filtered voltage, the main function loads comprising a refrigerating machine; a drive board, a power input end of the drive board being connected to an output end of the filter circuit, the drive board being used for driving auxiliary function loads of the household appliance, the auxiliary function loads comprising one or more of a vacuum pump, an elevator and an automatic door opening and closing device; a power control circuit, the power control circuit being integrated on the main control board, the power control circuit being connected in series between the power input end of the drive board and the output end of the filter circuit, the power control circuit being used for controlling the power input end of the drive board and the filter circuit to be disconnected when the auxiliary function loads are running; a processor, the processor being integrated on the main control board, the processor being used for sending a first control signal for controlling a first relay to be powered off when the auxiliary function loads are running; and being used for controlling a second relay to be powered on after remaining in a powered-off state for a preset time length when the auxiliary function loads are woken up; the power control circuit comprising: a first relay, comprising a first normally-opened switch, a first control pin and a second control pin, the second control pin being connected to a power supply voltage, the first normally-opened switch being connected in series between the power input end of the drive board and the output end of the filter circuit; a first switch tube, a first end of the first switch tube being connected to the first control pin, a second end of the first switch tube being connected to ground, and a control end of the first switch tube being used for receiving a first control signal sent by the processor to control a state of the first relay; the drive board comprising: a bus capacitor, the bus capacitor being connected in parallel to an input end of the drive board, the power control circuit further comprising a current-limiting resistor, a second relay and a second switch tube, the current-limiting resistor being connected in series with the first normally-opened switch; the second relay comprising a second normally-opened switch, a third control pin and a fourth control pin, the second normally-opened switch being connected in parallel to the current-limiting resistor, and the fourth control pin being connected to the power supply voltage; a first end of the second switch tube being connected to the third control pin, a second end of the second switch tube being connected to ground, and a control end of the second switch tube being used for receiving a second control signal sent by the processor to control a state of the second relay.

2. The domestic appliance according to claim 1, characterized in that, the power control circuit further comprising: a first diode, the first diode being connected in parallel to the first relay, wherein an anode of the first diode is connected to the first control pin, and a cathode of the first diode is connected to the second control pin; a second diode, the second diode being connected in parallel to the second relay, wherein an anode of the second diode is connected to the third control pin, and a cathode of the second diode is connected to the fourth control pin.

3. The domestic appliance according to claim 1, characterized in that, the current-limiting resistor is a positive temperature coefficient thermistor.

4. The domestic appliance according to claim 1, characterized in that, The household appliance includes a plurality of power supply control circuits and a plurality of drive boards, an output end of the filter circuit is connected to an input end of the plurality of power supply control circuits, and an output end of the plurality of power supply control circuits is connected to an input end of the plurality of drive boards one by one to control the corresponding drive boards respectively; the plurality of drive boards are used to drive corresponding auxiliary function loads respectively; the processor is further used for: when any one of the plurality of auxiliary function loads is in a woken-up state, controlling the first relay in the corresponding power supply control circuit to be powered on, and controlling the second relay in the corresponding power supply control circuit to be powered on after being in a power-off state for a preset time length; when any one of the plurality of woken-up auxiliary function loads ends running, controlling the first relay in the corresponding power supply control circuit to be powered off.

5. The domestic appliance according to claim 1, characterized in that, The drive board further includes: a rectifier circuit, the rectifier circuit is used to convert alternating current output by the power supply control circuit into first direct current, and a bus capacitor is connected in parallel to an input end of the rectifier circuit; a switching power supply circuit, the switching power supply circuit is used to convert the first direct current into second direct current; a drive circuit, an input end of the drive circuit is connected to an output end of the switching power supply circuit, and the drive circuit is used to drive the auxiliary function load.

6. A control method of a home appliance for controlling the home appliance according to any one of claims 1 to 5, characterized in that, The control method includes: when the auxiliary function load is in a woken-up state, sending a control signal to the power supply control circuit to control the power input end of the drive board to be in communication with the filter circuit; when the auxiliary function load ends running, sending a control signal to the power supply control circuit to control the power input end of the drive board to be disconnected from the filter circuit.

7. The control method of a home appliance according to claim 6, characterized in that, The power supply control circuit further includes a current-limiting resistor, a second relay and a second switch tube, the current-limiting resistor is connected in series to the first normally open switch, the second relay includes a second normally open switch, a third control pin and a fourth control pin, the second normally open switch is connected in parallel to the current-limiting resistor, and the fourth control pin is connected to a power supply voltage; a first end of the second switch tube is connected to the third control pin, a second end of the second switch tube is connected to the ground, and a control end of the second switch tube is used to receive a second control signal sent by the processor to control a state of the second relay; The control method of the household appliance further includes: when the auxiliary function load is in a woken-up state, controlling the second relay to be powered on after being in a power-off state for a preset time length.

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