Electrical equipment

Abstract

The present application provides an embodiment belonging to the home appliance technology, and provides an electrical device, which includes: a receiving device, a control device, a system-on-chip SOC and a power supply device; wherein the receiving device is connected to the control device and the SOC, and the power supply device is connected to the control device and the SOC; the power supply device is configured to supply power to the control device and the SOC; the receiving device is configured to receive a remote control signal, and the remote control signal includes a first standby signal; the SOC is configured to output a first standby flag to the control device when the first standby signal is detected; the control device is configured to cut off the power supply from the power supply device to the SOC and supply power to the receiving device when the first standby flag is received. The present application can greatly reduce the power consumption of the electrical device when it is in standby mode.

Description

[0001] This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on October 8, 2023, with application number 2023112945612 and application name “Household Appliances”, the entire contents of which are incorporated by reference in this application. The priority of the Chinese patent application filed with the Chinese Patent Office on March 7, 2024, with application number 2024102634679 and application name “Household Appliances” is claimed, and the entire contents are incorporated by reference in this application. The priority of the Chinese patent application filed with the Chinese Patent Office on March 7, 2024, with application number 2024102634541 and application name “Household Appliances” is claimed, and the entire contents are incorporated by reference in this application. The priority of the Chinese patent application filed with the Chinese Patent Office on March 7, 2024, with application number 2024102614590 and application name “Household Appliances” is claimed, and the entire contents are incorporated by reference in this application. Technical Field

[0002] The embodiments of the present application relate to household appliance technology, and more particularly to an electrical appliance. Background Art

[0003] The standby state of electrical equipment usually refers to an intermediate working state between the electrical equipment performing normal functions and being completely disconnected from the AC power supply and completely powered off. Electrical equipment still consumes a certain amount of electrical energy in the standby state, and the energy consumption generated is called standby energy consumption. Obviously, the standby energy consumption is much smaller than the electrical energy consumed when the electrical equipment performs normal functions, but the electrical equipment in the standby state does not perform normal functions. Therefore, while the standby function provides convenience for users, it also causes a lot of energy waste.

[0004] In the related art, a solution is provided for reducing standby energy consumption for electrical appliances such as computers, washing machines, and electronic microwave ovens. The solution is to add mechanical switches and relays to the electrical appliances, but remote control standby cannot be achieved. It is not suitable for electrical appliances that support remote control functions, such as televisions, air conditioners, and set-top boxes.

[0005] Therefore, for electrical devices supporting remote control functions, it is urgent to provide a solution to reduce standby power consumption. Summary of the invention

[0006] The embodiment of the present application provides an electrical device, which can greatly reduce the power consumption of the electrical device when it is in standby mode.

[0007] In a first aspect, an embodiment of the present application provides an electrical device, including: a receiving device, a control device, a system-on-chip SOC, and a power supply device;

[0008] Wherein, the receiving device is connected to the control device and the SOC respectively, and the power supply device is connected to the control device and the SOC respectively;

[0009] The power supply device is configured to supply power to the control device and the SOC respectively;

[0010] The receiving device is configured to receive a remote control signal, wherein the remote control signal includes a first standby signal;

[0011] The SOC is configured to output a first standby flag to the control device when the first standby signal is detected;

[0012] The control device is configured to cut off the power supply from the power supply device to the SOC and supply power to the receiving device when receiving the first standby flag.

[0013] If the user requires the electrical device to be in the lowest power consumption standby state, the user sends a first standby signal to the receiving device. The SOC detects the first standby signal through the receiving device and outputs the first standby flag to the control device. After receiving the first standby flag, the control device cuts off the power supply from the power supply device to the SOC. At this time, the SOC is completely powered off, and the power consumption of the SOC drops to 0W, which greatly reduces the power consumption of the electrical device when it is in standby.

[0014] In some embodiments of the present application, the control device is further configured to:

[0015] When the first standby flag is received, intermittent power supply is provided to the receiving device.

[0016] In some embodiments of the present application, the control device is configured as follows:

[0017] When intermittent power supply is provided to the receiving device, a pulse width modulation (PWM) signal is output to the receiving device.

[0018] In some embodiments of the present application, it also includes:

[0019] A first control switch, disposed between the power supply device and the SOC, the first control switch being also connected to the control device;

[0020] The first control switch is configured to be turned on or off under the control of the control device, and to connect the power supply from the power supply device to the SOC when turned on, and to cut off the power supply from the power supply device to the SOC when turned off.

[0021] In some embodiments of the present application, the present invention further includes: a driving circuit;

[0022] The driving circuit comprises: a first capacitor, a first field effect transistor and a driving chip;

[0023] One end of the first capacitor is connected to the secondary coil of the transformer in the power supply device, is also connected to the voltage pin of the control device, and is also connected to the first control switch; the other end of the first capacitor is connected to the source of the first field effect transistor;

[0024] The gate of the first field effect transistor is connected to one end of the driving circuit, and the drain is connected to the secondary coil;

[0025] The other end of the driving chip is connected to the universal pin of the control device.

[0026] In some embodiments of the present application, it also includes:

[0027] A diode and a second capacitor;

[0028] The positive electrode of the diode is connected to the secondary coil of the transformer in the power supply device, and the negative electrode is connected to one end of the second capacitor;

[0029] One end of the second capacitor is also connected to the first control switch, and the other end is connected to the secondary coil.

[0030] In some embodiments of the present application, it also includes:

[0031] A second control switch, arranged between the control device and the receiving device;

[0032] The second control switch is configured to be turned on or off under the control of the control device, to supply power to the receiving device when turned on, and to stop supplying power to the receiving device when turned off.

[0033] In some embodiments of the present application, it also includes:

[0034] A low voltage drop linear regulator is arranged between the power supply device and the control device.

[0035] The low voltage drop linear regulator is used to stabilize the voltage output from the power supply device to the control device. Compared with other voltage regulators, the low voltage drop linear regulator has the advantages of lower output voltage and stable operation, thereby ensuring the stability of the power supply from the power supply device to the control device.

[0036] In some embodiments of the present application, the control device is further configured to:

[0037] After cutting off the power supply from the power supply device to the SOC, if it is detected that the receiving device receives the remote control signal, output a fixed power supply signal to the receiving device until the remote control signal is parsed; if the parsing result indicates a power-on signal, restore the power supply from the power supply device to the SOC;

[0038] Correspondingly, the SOC is further configured to output a second standby flag to the control device;

[0039] The control device is further configured to stop supplying power to the receiving device when receiving the second standby flag.

[0040] In some embodiments of the present application, at least one of the following is also included:

[0041] A first power supply isolation circuit is provided between the SOC and the receiving device;

[0042] A second power supply isolation circuit is arranged between the control device and the receiving device;

[0043] A signal isolation circuit is arranged between the SOC and the receiving device.

[0044] When the control device and the receiving device are powered, adding the first power supply isolation circuit, the second power supply isolation circuit and the signal isolation circuit as described above can prevent the standby power of the electrical device from increasing due to power backflow.

[0045] In some embodiments of the present application, it also includes:

[0046] An optical coupler, a first end of which is connected to the control device, a second end of which is connected to a feedback pin of a control chip in the power supply device, and a third end of which is grounded;

[0047] The control device is further configured to output a sleep signal to the feedback pin through the optical coupler when receiving the first standby flag;

[0048] The control chip is configured to enter a sleep mode and operate in a frequency hopping state when the sleep signal is recognized through the feedback pin.

[0049] By making the control chip work in a frequency hopping state, the standby power consumption of the electrical device can be further reduced.

[0050] In some embodiments of the present application, it also includes:

[0051] a third capacitor and a second field effect transistor;

[0052] One end of the third capacitor is connected to the bridge rectifier circuit in the power supply device, and the other end is connected to the drain of the second field effect transistor;

[0053] The source of the second field effect transistor is grounded, and the gate is connected to the driving output pin of the control chip.

[0054] By providing a field effect transistor (the second field effect transistor) on the electrolytic capacitor (the third capacitor) of the power supply device, the leakage current loss of the electrolytic capacitor in the power supply device can be greatly reduced, thereby further reducing the standby power consumption.

[0055] In some embodiments of the present application, the remote control signal further includes a second standby signal, and the standby power consumption of the electrical device under the first standby signal is less than the standby power consumption under the second standby signal;

[0056] The SOC is configured to output a second standby flag to the control device and enter a standby state when the second standby signal is detected when the power is not turned off;

[0057] The SOC is further configured to supply power to the receiving device in a standby state;

[0058] The second standby flag is used to indicate that the control device is not in action.

[0059] In some embodiments of the present application, the remote control signal also includes a power-on signal.

[0060] The SOC is further configured to switch from a standby state to a working state when the power-on signal is detected.

[0061] That is to say, the electrical device has two standby modes, which is an ultra-low power standby mode when corresponding to the first standby signal, and a normal standby mode when corresponding to the second standby signal. In the ultra-low power standby mode, the SOC is powered off, the control device replaces the SOC, and the control device provides intermittent power supply to the receiving device. At this time, the SOC has zero power consumption, and the receiving device also reduces power consumption by receiving intermittent power supply. It has been verified by experiments that in the ultra-low power standby mode, the standby power of the electrical device is less than 5mW. In the normal standby mode, the SOC is in a standby state, and the SOC supplies power to the receiving device. The wake-up module keeps working when the SOC is in a standby state. It has been verified by experiments that in the normal standby mode, the standby power of the electrical device is less than 500mW. In addition, the SOC is in a standby state without powering off, which can shorten the time for remote control startup. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0063] Figure 1 A schematic diagram of the structure of an electrical device provided for some embodiments of the present application;

[0064] Figure 2 A schematic diagram of the structure of an electrical device provided for some embodiments of the present application;

[0065] Figure 3 A schematic diagram of the structure of an electrical device provided for some embodiments of the present application;

[0066] Figure 4 A schematic diagram of a control chip output signal provided for some embodiments of the present application;

[0067] Figure 5 A schematic diagram of the structure of an electrical device provided for some embodiments of the present application. DETAILED DESCRIPTION

[0068] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0069] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0070] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0071] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0072] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0073] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0074] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0075] The standby state of an electrical device usually refers to an intermediate working state of the electrical device between performing normal functions and being completely disconnected from the AC power supply and completely powered off. Electrical devices will still consume a certain amount of electrical energy in the standby state, and the energy consumption generated is called standby energy consumption. Obviously, the standby energy consumption is much smaller than the electrical energy consumed when the electrical device performs normal functions, but the electrical device in the standby state does not perform normal functions. Therefore, while the standby function provides convenience for users, it also causes a lot of energy waste. In the related art, a solution for reducing standby energy consumption is provided for electrical devices such as computers, washing machines, and electronic microwave ovens. In this solution, mechanical switches and relays are added to the electrical devices, but remote control standby cannot be achieved, and it is not suitable for electrical devices that support remote control functions, such as televisions, air conditioners, and set-top boxes. Therefore, for electrical devices that support remote control functions, it is urgent to provide a solution to reduce standby power consumption.

[0076] Based on this, the present application provides an electrical device. The electrical device includes: a receiving device, a control device, a system-on-chip SOC (System on Chip) and a power supply device. The receiving device is connected to the control device and the SOC respectively, and the power supply device is connected to the control device and the SOC respectively. The power supply device is configured to supply power to the control device and the SOC; the receiving device is configured to receive a remote control signal, and the remote control signal includes a first standby signal; the SOC is configured to output a first standby flag to the control device when the first standby signal is detected; the control device is configured to cut off the power supply from the power supply device to the SOC when the first standby flag is received, and supply power to the receiving device.

[0077] That is to say, if the user needs the electrical device to be in the lowest power consumption standby state, the first standby signal is sent to the receiving device. The SOC detects the first standby signal through the receiving device and outputs the first standby flag to the control device. After receiving the first standby flag, the control device cuts off the power supply from the power supply device to the SOC. At this time, the SOC is completely powered off, and the power consumption of the SOC drops to 0W, which greatly reduces the power consumption of the electrical device when it is in standby.

[0078] The electrical device is described below in conjunction with various embodiments.

[0079] Figure 1 A schematic diagram of the structure of an electrical device 10 provided in some embodiments of the present application, such as Figure 1 shown.

[0080] In some embodiments, the electrical device 10 includes a receiving device 101. The receiving device 101 is configured to receive a remote control signal, wherein the remote control signal includes a first standby signal. The receiving device 101 is connected to a control device 102. The receiving device 101 is connected to a SOC 103. The SOC 103 is also called a motherboard in the field of household appliances.

[0081] In some embodiments, the receiving device 101 may be a remote control keypad or a remote control receiving head. The user may send the remote control signal to the receiving device 101 (eg, remote control keypad) by operating the remote control (eg, performing a key operation on the remote control).

[0082] In some embodiments, the remote control signal is an infrared signal.

[0083] In some embodiments, the electrical device may include one receiving device 101 , and the receiving device 101 is shared by the control device 102 and the SOC 103 . In other words, one receiving device 101 is connected to the control device 102 and the SOC 103 .

[0084] In some embodiments, the electrical device may include two receiving devices 101 , wherein one of the receiving devices 101 is connected to the control device 102 , and the other of the receiving devices 101 is connected to the SOC 103 .

[0085] In some embodiments, the electrical device includes a power supply device 104. The power supply device 104 is configured to supply power to the control device 102 and the SOC 103.

[0086] In some embodiments, the power supply device 104 is an AC-DC power module. AC stands for alternating current, which is also known as Alternating Current. DC stands for direct current, which is also known as Direct Current.

[0087] See also Figure 2 In some embodiments, the power supply device 104 includes a bridge rectifier circuit 1041, a control chip 1042 and a transformer 1043. The transformer 1043 includes a primary coil 1044 and a secondary coil 1045. The bridge rectifier circuit 1041 is used to convert AC alternating current into DC direct current. The transformer 1043 is used to transform the DC power. In this embodiment, the number of coils of the secondary coil 1045 is greater than the number of coils of the primary coil 1044.

[0088] In some embodiments, the electrical device includes the control device 102. The control device 102 is connected to the receiving device 101.

[0089] In some embodiments, the control device 102 is configured to cut off the power supply from the power supply device 104 to the SOC 103 when receiving the first standby flag.

[0090] In some embodiments, the control device 102 is configured to supply power to the receiving device 101 upon receiving the first standby flag.

[0091] In some embodiments, the control device 102 is a single chip microcomputer (Micro Controller Unit, MCU for short).

[0092] In some embodiments, the control device 102 is configured to provide intermittent power supply to the receiving device 101 when receiving the first standby flag. For example, the control device 102 is configured to output a pulse width modulation (PWM) signal to the receiving device 101 when receiving the first standby flag, so as to provide intermittent power supply to the receiving device 101. When the receiving device 101 receives the intermittent power supply, it is in an intermittent working state.

[0093] In some embodiments, the electrical device includes the SOC 103. The SOC 103 is configured to output the first standby flag to the control device 102 when the first standby signal is detected.

[0094] In some embodiments, the SOC 103 outputs a ZPW-FLAG flag to the control device 102. The ZPW-FLAG flag can be understood as a level signal, and different level signals represent different standby modes. The SOC 103 outputs the first standby flag, which can be understood as the SOC 103 outputting a ZPW-FLAG flag of 1, which corresponds to a high level signal.

[0095] In summary, in this embodiment, the electrical device includes: a receiving device 101, a control device 102, a SOC 103 and a power supply device 104. The receiving device 101 is connected to the control device 102 and the SOC 103 respectively, and the power supply device 104 is connected to the control device 102 and the SOC 103 respectively. The power supply device 104 is configured to supply power to the control device 102 and the SOC 103; the receiving device 101 is configured to receive a remote control signal, and the remote control signal includes a first standby signal; the SOC 103 is configured to output a first standby flag to the control device 102 when the first standby signal is detected; the control device 102 is configured to cut off the power supply from the power supply device 104 to the SOC 103 when the first standby flag is received, and supply power to the receiving device 101.

[0096] That is to say, if the user needs the electrical device to be in the lowest power consumption standby state, the user sends a first standby signal to the receiving device 101. The SOC 103 detects the first standby signal through the receiving device 101 and outputs the first standby flag to the control device 102. After receiving the first standby flag, the control device 102 cuts off the power supply from the power supply device 104 to the SOC 103. At this time, the SOC 103 is completely powered off, and the power consumption of the SOC 103 drops to 0W, which greatly reduces the power consumption of the electrical device when it is in standby.

[0097] Figure 2 A schematic diagram of the structure of an electrical device provided in some embodiments of the present application, such as Figure 2 shown.

[0098] In some embodiments, the electrical device includes a first control switch 1021 .

[0099] Specifically, the first control switch 1021 is disposed between the power supply device 104 and the SOC 103 , that is, one end of the first control switch 1021 is connected to the power supply device 104 , and the other end is connected to the SOC 103 .

[0100] Specifically, the first control switch 1021 is also connected to the control device 102. Specifically, the first control switch 1021 is signal-connected to the control device 102.

[0101] In some embodiments, the first control switch 1021 is configured to be turned on or off under the control of the control device 102 .

[0102] In some embodiments, the first control switch 1021 is configured to connect the power supply from the power supply device 104 to the SOC 103 when it is turned on, and to cut off the power supply from the power supply device 104 to the SOC 103 when it is turned off.

[0103] In some embodiments, the first control switch 1021 may be a field effect transistor (MOS) switch. At this time, the gate of the first control switch 1021 receives a control signal sent by the control device 102 through a gate pin (GATE pin), and the control signal is used to turn on or off the first control switch 1021. The drain of the first control switch 1021 is connected to the power supply device 104. The source of the first control switch 1021 is connected to the SOC 103.

[0104] In some embodiments, the first control switch 1021 may also be other switches that can be unidirectionally conducted under the control of the control device 102 .

[0105] In some embodiments, a step-down circuit (DC-DC) may be further provided between the SOC 103 and the first control switch 1021 .

[0106] In some embodiments, the power supply of the receiving device 101 may also be set to a step-down voltage (DC-DC).

[0107] See also Figure 2 .

[0108] In some embodiments, the electrical device further includes a drive circuit 105 . The drive circuit 105 is disposed between the power supply device 104 and the control device 102 .

[0109] In some embodiments, the driving circuit 105 further includes: a first capacitor 1051 , a first field effect transistor 1052 , and a driving chip 1053 .

[0110] In some embodiments, one end of the first capacitor 1051 is connected to the secondary coil 1045 of the transformer 1043 in the power supply device 104. One end of the first capacitor 1051 is also connected to the voltage pin (VCC pin) of the control device 102. One end of the first capacitor 1051 is also connected to the first control switch 1021.

[0111] In some embodiments, the other end of the first capacitor 1051 is connected to the source of the first field effect transistor 1052 .

[0112] In some embodiments, a gate of the first field effect transistor 1052 is connected to one end of the driving circuit 105 , and a drain of the first field effect transistor 1052 is connected to the secondary coil 1045 .

[0113] In some embodiments, the other end of the driver chip 1053 is connected to a general purpose pin (GPIO pin) of the control device 102 .

[0114] In some embodiments, the driver chip 1053 is configured to drive and trigger the power supply of the control device 102 .

[0115] In some embodiments, the control device 102 is also grounded via a pin.

[0116] Figure 3 A schematic diagram of the structure of an electrical device provided in some embodiments of the present application, such as Figure 3 shown.

[0117] In some embodiments, the electrical device further includes a diode 106. The diode 106 may be a rectifier diode 106.

[0118] In some embodiments, the anode of the diode 106 is connected to the secondary coil 1045 of the transformer 1043 in the power supply device 104 , and the cathode is connected to one end of the second capacitor 107 .

[0119] In some embodiments, the electrical device further includes a second capacitor 107 .

[0120] In some embodiments, one end of the second capacitor 107 is also connected to the first control switch 1021 , and the other end is connected to the secondary coil 1045 .

[0121] See also Figure 3 .

[0122] In some embodiments, the electrical device further includes a second control switch 108. The second control switch 108 is disposed between the control device 102 and the receiving device 101. Specifically, one end of the second control switch 108 is connected to the control device 102, and the other end is connected to the receiving device 101. Figure 3 As shown, one end of the second control switch 108 is also connected to one end of the second capacitor 107 .

[0123] In some embodiments, the second control switch 108 is configured to be turned on or off under the control of the control device 102, to supply power to the receiving device 101 when turned on, and to stop supplying power to the receiving device 101 when turned off.

[0124] In some embodiments, the second control switch 108 is a MOS switch. The source of the second control switch 108 is connected to one end of the second capacitor 107. The drain of the second control switch 108 is connected to the receiving device 101. The gate of the second control switch 108 is connected to the PWM pin of the control device 102.

[0125] In some embodiments, the second control switch 108 may also be other switches that can be turned on and off under the control of the control device 102 .

[0126] See also Figure 1 or Figure 3 .

[0127] In some embodiments, the electrical device further includes a low dropout regulator 109 (LDO 109 for short) which is disposed between the power supply device 104 and the control device 102 .

[0128] In some embodiments, one end of the LDO 109 is connected to one end of the second capacitor 107 , and the other end of the LDO 109 is connected to the source of the second control switch 108 .

[0129] The LDO 109 is used to stabilize the voltage outputted from the power supply device 104 to the control device 102. Compared with other voltage stabilizers, the LDO 109 has advantages such as lower output voltage drop and stable operation, thereby ensuring the stability of the power supply from the power supply device 104 to the control device 102.

[0130] See also Figure 1 , Figure 2 and Figure 3 .

[0131] In some embodiments, the control device 102 is further configured to: after cutting off the power supply from the power supply device 104 to the SOC 103, if it is detected that the receiving device 101 receives a remote control signal, output a fixed power supply signal to the receiving device 101 until the remote control signal is parsed. If the parsing result indicates a power-on signal, the power supply from the power supply device 104 to the SOC 103 is restored.

[0132] That is to say, during the period when the control device 102 outputs a PWM signal to the receiving device 101 to provide intermittent power supply, the control device 102 is in a low-frequency detection mode, and continuously detects whether the receiving device 101 receives a signal. If it is detected that the receiving device 101 receives a remote control signal, the output PWM signal is changed to an output fixed level to output a fixed power supply signal to the receiving device 101 to keep the receiving device 101 powered for a long time. When it is detected that the receiving device 101 receives a remote control signal, the control device 102 starts to parse the remote control signal, and the control device 102 continues to output a fixed power supply signal to the receiving device 101 until the remote control signal is parsed. After parsing the remote control signal, if the remote control signal is a power-on signal, the control device 102 stops outputting the fixed power supply signal to the receiving device 101. After parsing the remote control signal, if the remote control signal is not a power-on signal, the control device 102 outputs a PWM signal to the receiving device 101 to provide intermittent power supply.

[0133] For example, when the user uses the remote control to turn on the TV, the control device 102 (such as MCU) recognizes the changes in high and low levels through the receiving device 101 (such as infrared head), and outputs a fixed power supply signal to the infrared head. At this time, the infrared head is in a continuous working state. When the MCU captures and recognizes the complete power-on code through the infrared head, it controls the SOC103 to restore power supply to turn on the TV.

[0134] In some embodiments, if the remote control signal is a power-on signal, correspondingly, the SOC 103 is further configured to output a second standby flag to the control device 102. The control device 102 is further configured to stop supplying power to the receiving device 101 upon receiving the second standby flag. The SOC 103 outputs a ZPW-FLAG flag to the control device 102, and the ZPW-FLAG flag can be understood as a level signal, and different level signals represent different standby modes. The SOC 103 outputs the second standby flag, which can be understood as the SOC 103 outputting a ZPW-FLAG flag as 0, and 0 corresponds to a low level signal.

[0135] See also Figure 3 .

[0136] In some embodiments, the electrical device further includes at least one of the following: a first power supply isolation circuit 110 , a second power supply isolation circuit 120 , and a signal isolation circuit 130 .

[0137] In some embodiments, the first power supply isolation circuit 110 is disposed between the SOC 103 and the receiving device 101 .

[0138] In some embodiments, the first power supply isolation circuit 110 includes a diode 106 . The anode of the diode 106 is connected to the SOC 103 , and the cathode of the diode 106 is connected to the receiving device 101 .

[0139] In some embodiments, the second power supply isolation circuit 120 is disposed between the control device 102 and the receiving device 101 .

[0140] In some embodiments, the second power supply isolation circuit 120 includes a diode 106. The anode of the diode 106 is connected to the control device 102, and the cathode is connected to the receiving device 101. Specifically, the anode of the diode 106 is connected to the drain of the second control switch 108.

[0141] In some embodiments, the signal isolation circuit 130 is disposed between the SOC 103 and the receiving device 101 .

[0142] When the control device 102 supplies power to the receiving device 101, adding the first power supply isolation circuit 110, the second power supply isolation circuit 120 and the signal isolation circuit 130 as described above can prevent the standby power of the electrical device from increasing due to power backflow.

[0143] See also Figure 2 and Figure 3 .

[0144] In some embodiments, the electrical device further includes an optical coupler 140. The first end of the optical coupler 140 is connected to the control device 102, the second end is connected to the feedback pin of the control chip 1042 in the power supply device 104, and the third end is grounded. The control chip 1042 is shown as N1 in the figure, also known as the primary ACDC control chip 1042.

[0145] In some embodiments, the control device 102 is further configured to output a sleep signal to the feedback pin (FB pin) through the optical coupler 140 when receiving the first standby flag.

[0146] In some embodiments, the control chip 1042 is configured to enter a sleep mode and operate in a frequency hopping state when the sleep signal is recognized through the feedback pin.

[0147] That is, when the MCU receives the first standby flag, it transmits a sleep signal to the FB pin of the control chip 1042, so that the control chip 1042 enters the sleep mode and works in a frequency hopping state.

[0148] In some embodiments, when the control chip 1042 operates in a frequency hopping state, the drive output pin (DRV pin) is in a frequency hopping state, such as Figure 4 As shown in the output signal diagram, the DRV pin outputs several driving signals only after a period of idle time.

[0149] In summary, by making the control chip 1042 work in a frequency hopping state, the standby power consumption of the electrical device 10 can be further reduced.

[0150] See also Figure 5 .

[0151] In some embodiments, the electrical device further includes a third capacitor 150 and a second field effect transistor 160 .

[0152] One end of the third capacitor 150 is connected to the bridge rectifier circuit 1041 in the power supply device 104, and the other end is connected to the drain of the second field effect transistor 160. The source of the second field effect transistor 160 is grounded, and the gate is connected to the drive output pin of the control chip 1042.

[0153] The third capacitor 150 is an electrolytic capacitor. Figure 5 In the conventional power supply device 104, the AC enters the positive electrode of the third capacitor 150 (C3) after passing through the bridge rectifier circuit 1041, and the negative electrode of the third capacitor 150 is grounded. Since the third capacitor 150 has a leakage current Ileak, there will always be a leakage current power loss of an electrolytic voltage U*Illeak in the third capacitor 150. In order to reduce the power loss caused by the leakage current of the third capacitor 150, the second field effect tube 160 is added between the negative electrode of the third capacitor 150 and the ground as a switch, and the conduction and shutoff of the second field effect tube are controlled by the DRV pin of the control chip 1042.

[0154] Specifically, the DRV pin of the control chip 1042 controls the on and off of V3. When the control chip 1042 works in sleep mode, the DRV pin is in a frequency hopping working state, and outputs several drive signals after a period of idle time. The second field effect tube 160 is only turned on when the drive signal is output, and the third capacitor 150 can be connected to the ground, and there will be leakage current loss at this time. In the idle time, the second field effect tube 160 is turned off, that is, the third capacitor 150 is disconnected from the ground, and there is no leakage current loss at this time.

[0155] In summary, by providing a field effect transistor (the second field effect transistor 160 ) in the electrolytic capacitor (the third capacitor 150 ) of the power supply device 104 , the leakage current loss of the electrolytic capacitor in the power supply device 104 can be greatly reduced, thereby further reducing the standby power consumption.

[0156] See also Figure 1 , Figure 2 and Figure 3 .

[0157] In some embodiments, the remote control signal further includes a second standby signal. The standby power consumption of the electrical device under the first standby signal is less than the standby power consumption under the second standby signal. The second standby signal can be understood as a normal standby signal, and the first standby signal can be understood as an ultra-low power standby signal.

[0158] In some embodiments, the SOC 103 is configured to output a second standby flag to the control device 102 and enter a standby state when the second standby signal is detected when the power is not turned off. The second standby flag is used to indicate that the control device 102 does not act. The control device 102 does not act, which means that the control device 102 does not cut off the power supply from the power supply device 104 to the SOC 103, nor does it supply power to the receiving device 101.

[0159] In some embodiments, the SOC 103 is further configured to supply power to the receiving device 101 in a standby state.

[0160] In some embodiments, the SOC 103 works in a normal working mode in the standby state, and at this time, the remote control startup and normal remote control functions can be realized through the receiving device 101. Normal remote control functions include, for example, adjusting the volume, changing channels, and the like.

[0161] In some embodiments, the SOC 103 is in a low frequency detection mode in the standby state, and continuously detects whether the receiving device 101 receives a signal.

[0162] In some embodiments, the SOC 103 is further configured to switch from the standby state to the working state when the power-on signal is detected.

[0163] In some embodiments, when the SOC 103 is in the working state, if the first standby signal is detected, the first standby flag is output to the control device 102 .

[0164] In summary, the electrical device has two standby modes. When it corresponds to the first standby signal, it is an ultra-low power standby mode, and when it corresponds to the second standby signal, it is a normal standby mode.

[0165] In the ultra-low power standby mode, the SOC 103 is powered off, and the control device 102 replaces the SOC 103, and the control device 102 provides intermittent power supply to the receiving device 101. At this time, the SOC 103 has zero power consumption, and the receiving device 101 receives intermittent power supply and also reduces power consumption. It has been verified by experiments that in the ultra-low power standby mode, the standby power of the electrical device is less than 5mW.

[0166] In the normal standby mode, the SOC 103 is in the standby state, and the SOC 103 supplies power to the receiving device 101. When the SOC 103 is in the standby state, the wake-up module keeps working. It has been verified by experiments that in the normal standby mode, the standby power of the electrical device is less than 500mW. In addition, the SOC 103 is in the standby state without powering off, which can shorten the time of remote control startup.

[0167] In some embodiments, the operation interface of the electrical device can set two standby modes, namely, an ultra-low power standby mode and a normal standby mode. The user can choose which standby mode to enter through the operation interface, thereby improving the user satisfaction of the electrical device.

[0168] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0169] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An electrical device, characterized in that: include: Receiving device, control device, system-on-chip SOC and power supply device; Wherein, the receiving device is connected to the control device and the SOC respectively, and the power supply device is connected to the control device and the SOC respectively; The power supply device is configured to supply power to the control device and the SOC respectively; The receiving device is configured to receive a remote control signal, wherein the remote control signal includes a first standby signal; The SOC is configured to output a first standby flag to the control device when the first standby signal is detected; The control device is configured to cut off the power supply from the power supply device to the SOC and supply power to the receiving device when receiving the first standby flag.

2. The electrical equipment according to claim 1, characterized in that: The control device is further configured to: When the first standby flag is received, intermittent power supply is provided to the receiving device.

3. The electrical equipment according to claim 2, characterized in that: The control device is configured to: When intermittent power supply is provided to the receiving device, a pulse width modulation (PWM) signal is output to the receiving device.

4. The electrical equipment according to any one of claims 1 to 3, characterized in that: Also includes: A first control switch, disposed between the power supply device and the SOC, the first control switch being also connected to the control device; The first control switch is configured to be turned on or off under the control of the control device, and to connect the power supply from the power supply device to the SOC when turned on, and to cut off the power supply from the power supply device to the SOC when turned off.

5. The electrical equipment according to claim 4, characterized in that: Also includes: Driving circuit; The driving circuit comprises: a first capacitor, a first field effect transistor and a driving chip; One end of the first capacitor is connected to the secondary coil of the transformer in the power supply device, is also connected to the voltage pin of the control device, and is also connected to the first control switch; the other end of the first capacitor is connected to the source of the first field effect transistor; The gate of the first field effect transistor is connected to one end of the driving circuit, and the drain is connected to the secondary coil; The other end of the driving chip is connected to the universal pin of the control device.

6. The electrical device according to claim 4, characterized in that: Also includes: A diode and a second capacitor; The positive electrode of the diode is connected to the secondary coil of the transformer in the power supply device, and the negative electrode is connected to one end of the second capacitor; One end of the second capacitor is also connected to the first control switch, and the other end is connected to the secondary coil.

7. The electrical equipment according to any one of claims 1 to 3, characterized in that: Also includes: A second control switch, arranged between the control device and the receiving device; The second control switch is configured to be turned on or off under the control of the control device, to supply power to the receiving device when turned on, and to stop supplying power to the receiving device when turned off.

8. The electrical equipment according to any one of claims 1 to 3, characterized in that: Also includes: A low voltage drop linear regulator is arranged between the power supply device and the control device.

9. The electrical equipment according to any one of claims 1 to 3, characterized in that: The control device is further configured to: After cutting off the power supply from the power supply device to the SOC, if it is detected that the receiving device receives the remote control signal, output a fixed power supply signal to the receiving device until the remote control signal is parsed; if the parsing result indicates a power-on signal, restore the power supply from the power supply device to the SOC; Correspondingly, the SOC is further configured to output a second standby flag to the control device; The control device is further configured to stop supplying power to the receiving device when receiving the second standby flag.

10. The electrical device according to any one of claims 1 to 3, characterized in that: Also includes at least one of the following: A first power supply isolation circuit is provided between the SOC and the receiving device; A second power supply isolation circuit is arranged between the control device and the receiving device; A signal isolation circuit is arranged between the SOC and the receiving device.

11. The electrical device according to any one of claims 1 to 3, characterized in that: Also includes: An optical coupler, a first end of which is connected to the control device, a second end of which is connected to a feedback pin of a control chip in the power supply device, and a third end of which is grounded; The control device is further configured to output a sleep signal to the feedback pin through the optical coupler when receiving the first standby flag; The control chip is configured to enter a sleep mode and operate in a frequency hopping state when the sleep signal is recognized through the feedback pin.

12. The electrical device according to claim 11, characterized in that: Also includes: a third capacitor and a second field effect transistor; One end of the third capacitor is connected to the bridge rectifier circuit in the power supply device, and the other end is connected to the drain of the second field effect transistor; The source of the second field effect transistor is grounded, and the gate is connected to the driving output pin of the control chip.

13. The electrical device according to any one of claims 1 to 3, characterized in that: The remote control signal further includes a second standby signal, and the standby power consumption of the electrical device under the first standby signal is less than the standby power consumption under the second standby signal; The SOC is configured to output a second standby flag to the control device and enter a standby state when the second standby signal is detected when the power is not turned off; The SOC is further configured to supply power to the receiving device in a standby state; The second standby flag is used to indicate that the control device is not in action.

14. The electrical device according to claim 11, characterized in that: The remote control signal also includes a power-on signal. The SOC is further configured to switch from a standby state to a working state when the power-on signal is detected.

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