Standby control circuit and electronic device

Abstract

The embodiment of the present disclosure provides a standby control circuit and electronic equipment, the circuit comprises a main power supply control module, wherein the first mains input end is used for being electrically connected with the mains, and the load access end is used for being electrically connected with the load; a small power supply control module is provided with a power supply output end, and is used for outputting a power supply electric signal through the power supply output end; a standby switch module is provided with a standby input end and an enable output end, the standby input end is electrically connected with the power supply output end, when the standby switch module receives a starting electric signal, the standby switch module outputs a target electric signal through the enable output end; a switch control module is provided with a first end, a second end and a third end, the first end is electrically connected with the main power supply control module, the first end is also electrically connected with the power supply output end, the second end is electrically connected with the enable output end, and the third end is grounded; when the second end receives the target electric signal output by the enable output end, the first end and the third end are conducted, so that the embodiment of the present disclosure can reduce standby power consumption.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, and in particular to a standby control circuit and electronic device. Background Technology

[0002] With the development of society and technology, smart home appliances, furniture, and electronic products are becoming increasingly popular. Many electronic devices can be intelligently controlled, allowing users to remotely power them off—a process known as soft shutdown. During soft shutdown, the electronic device enters standby mode, where the main load does not need to operate. Therefore, standby power consumption is receiving increasing attention. However, electronic devices in related technologies still exhibit significant standby power consumption in standby mode, making the reduction of standby power consumption a pressing issue. Utility Model Content

[0003] The main objective of this disclosure is to provide a standby control circuit and electronic device that can reduce standby power consumption.

[0004] To achieve the above objectives, a first aspect of this disclosure provides a standby control circuit, applied in an electronic device, comprising: The main power control module is provided with a first mains power input terminal and a load connection terminal. The first mains power input terminal is used to connect to the mains power, and the load connection terminal is used to connect to the load. The small power control module is provided with a power output terminal, and the small power control module is used to output a power supply signal through the power output terminal. A standby switch module is provided with a standby input terminal and an enable output terminal. The standby input terminal is electrically connected to the power supply output terminal. When the standby switch module receives a start electrical signal, the standby switch module outputs a target electrical signal through the enable output terminal. The switch control module is provided with a first terminal, a second terminal and a third terminal. The first terminal is electrically connected to the main power control module and is also electrically connected to the power supply output terminal. The second terminal is electrically connected to the enable output terminal. The third terminal is grounded. When the second terminal receives the target electrical signal output by the enable output terminal, the first terminal and the third terminal are connected.

[0005] In some embodiments, an isolation module is further included, which is disposed between the switch control module and the main power control module, and between the power supply output terminal and the main power control module; The isolation module is equipped with an optocoupler and a thyristor. The anode of the input side of the optocoupler is electrically connected to the power supply output terminal, the cathode of the input side of the optocoupler is electrically connected to the first terminal, and the output side of the optocoupler is electrically connected to the main power control module through the thyristor.

[0006] In some embodiments, the isolation module is provided with a first resistor and a second resistor. The first output terminal of the optocoupler is connected to one end of the first resistor, and the other end of the first resistor is connected to the control electrode of the thyristor. The second output terminal of the optocoupler is connected to the cathode of the thyristor and one end of the second resistor, respectively. The other end of the second resistor is connected to the anode of the thyristor. The control electrode and anode of the thyristor are electrically connected to the main power control module.

[0007] In some embodiments, the small power control module is provided with a second mains input terminal and a first voltage control module. The second mains input terminal is used to be electrically connected to the mains power to receive the mains power signal from the mains power. The input terminal of the first voltage control module is electrically connected to the second mains input terminal. The output terminal of the first voltage control module is the power supply output terminal. The first voltage control module is used to convert the mains power signal into the power supply signal output by the power supply output terminal.

[0008] In some embodiments, the first voltage control module includes a first rectifier module, a first switching power supply control module, an isolation transformer, and a first filter module. One end of the first rectifier module is electrically connected to the second mains input terminal, and the other end of the first rectifier module and one end of the first switching power supply control module are respectively electrically connected to one end of the isolation transformer. The other end of the first switching power supply control module is grounded, and the first filter module is disposed between the other end of the isolation transformer and the power supply output terminal.

[0009] In some embodiments, the first voltage control module includes a second rectifier module, a second switching power supply control module, and a second filter module. One end of the second rectifier module is electrically connected to the second mains input terminal, and the other end of the second rectifier module is electrically connected to one end of the second switching power supply control module. The second filter module is disposed between the other end of the second switching power supply control module and the power supply output terminal.

[0010] In some embodiments, the small power control module includes a battery module and a second voltage control module. The battery module is electrically connected to the input terminal of the second voltage control module to supply a battery electrical signal to the second voltage control module. The output terminal of the second voltage control module is the power supply output terminal. The second voltage control module is used to convert the battery electrical signal into the power supply electrical signal output by the power supply output terminal.

[0011] In some embodiments, the standby switch module is a wireless module. After receiving a start electrical signal transmitted wirelessly, the wireless module outputs the target electrical signal through the enable output terminal.

[0012] In some embodiments, the switch control module is an NPN transistor, the first terminal is the collector of the NPN transistor, the second terminal is the base of the NPN transistor, and the third terminal is the emitter of the NPN transistor.

[0013] To achieve the above objectives, a second aspect of the present disclosure provides an electronic device including the standby control circuit described in any one of the first aspects of the present disclosure.

[0014] The beneficial effects of the embodiments disclosed herein include: In this embodiment, when the standby switch module receives a start signal, it outputs a target signal to the second terminal of the switch control module through the enable output terminal, thereby triggering the conduction between the first and third terminals of the switch control module. This allows the main power control module to be grounded and thus conduct, enabling it to supply power to the load through the load connection terminal. Conversely, when the standby switch module does not receive a start signal, the enable output terminal cannot output the target signal to the second terminal of the switch control module, and the first and third terminals of the switch control module are cut off. This prevents the main power control module from being grounded, causing it to disconnect and preventing it from supplying power to the load through the load connection terminal. In this case, only the small power control module is working in the circuit. Therefore, this embodiment uses an independent small power control module to supply power to the standby control link, avoiding the additional power consumption caused by the continuous power supply of the traditional main power supply. The standby switch module only outputs the target signal after receiving a start signal and goes into low-power sleep mode when not triggered, thus ensuring the normal operation of the circuit while reducing power consumption during standby. Attached Figure Description

[0015] Figure 1 This is a functional block diagram of the standby control circuit provided in the embodiments of this disclosure; Figure 2 This is a circuit structure diagram of the main part of the standby control circuit provided in the embodiments of this disclosure; Figure 3 This is a circuit structure diagram of the small power supply control circuit provided in the embodiments of this disclosure; Figure 4 This is another circuit structure diagram of the small power supply control circuit provided in the embodiments of this disclosure; Figure 5 This is a schematic diagram of an electronic device provided in an embodiment of this disclosure. Detailed Implementation

[0016] The accompanying drawings in the embodiments clearly and completely describe the technical solutions in the embodiments of this disclosure. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0017] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this disclosure.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing embodiments of this disclosure only and is not intended to be limiting of this disclosure.

[0019] First, let's analyze some of the terms used in this disclosure: Soft shutdown of electronic devices such as smart home appliances, furniture, and electronic products refers to the process of safely shutting down the device through system instructions or network commands. Similar to a computer's soft shutdown, it first terminates running programs or saves temporary data and shuts down system services, and then cuts off the power supply, waiting to be woken up or remotely controlled.

[0020] With the development of society and technology, smart home appliances, furniture, and electronic products are becoming increasingly popular. Many electronic devices can be intelligently controlled, allowing users to remotely power them off—a process known as soft shutdown. During soft shutdown, the electronic device enters standby mode, where the main load does not need to operate. Therefore, standby power consumption is receiving increasing attention. However, electronic devices in related technologies still exhibit significant standby power consumption in standby mode, making the reduction of standby power consumption a pressing issue.

[0021] Based on this, the present disclosure provides a standby control circuit and electronic device that can reduce standby power consumption.

[0022] The standby control circuit provided in the embodiments of this disclosure is described below: Please see Figure 1 , Figure 1 This is a functional block diagram of the standby control circuit provided in an embodiment of this disclosure. The standby control circuit includes: The main power control module is equipped with a first mains power input terminal and a load connection terminal. The first mains power input terminal is used to connect to the mains power, and the load connection terminal is used to connect to the load. The small power control module is equipped with a power output terminal, which is used to output a power supply signal through the power output terminal. The standby switch module is equipped with a standby input terminal and an enable output terminal. The standby input terminal is electrically connected to the power supply output terminal. When the standby switch module receives a start electrical signal, the standby switch module outputs the target electrical signal through the enable output terminal. The switch control module has a first terminal, a second terminal, and a third terminal. The first terminal is electrically connected to the main power control module and also electrically connected to the power supply output terminal. The second terminal is electrically connected to the enable output terminal. The third terminal is grounded. When the second terminal receives the target electrical signal output by the enable output terminal, the first terminal and the third terminal are connected.

[0023] For example, the standby control circuit in this disclosure embodiment can be applied in an electronic device as part of the circuit in the electronic device. Furthermore, the electronic device can be any smart home appliance, furniture, electronic product, etc. that requires standby power consumption control. For example, the electronic device can be a smart lamp, smart TV, or other smart home device. This disclosure embodiment does not impose any specific limitations on this.

[0024] In the above embodiments, the main power control module is the core carrier for the load to obtain operating power. Its first AC input terminal is directly connected to the AC mains, for example, it can be used to connect to 220V or other household AC mains power. The load input terminal is connected to the core working load of the device, such as the motor, display screen, and functional modules of a smart home appliance, or the LEDs of a smart lamp. The main power control module can convert the connected AC mains power into the target DC voltage required by the load and provide a matching operating current to meet the power supply requirements for normal operation of the load. It is the main power source when the device load is working.

[0025] The small power control module is a dedicated power supply unit for the standby control link, also known as an auxiliary power module. Its power output terminal is electrically connected to the control link associated with the main power control module, i.e., the switch control module. Its core function is to output a low-power power supply signal adapted to the operation of the control link. For example, the voltage of the power supply signal is 3.3V or 5V. It only needs to maintain the basic operation of the control-related devices and does not need to bear the load power supply pressure. Therefore, its power is much less than that of the main power control module, and its standby power consumption is lower. It is a power supply module that works continuously in standby mode.

[0026] The standby switch module is the trigger control unit for the main power supply switching, essentially acting as a signal gate in the control link. Its standby input terminal is electrically connected to the power output terminal of the small power control module to obtain its own operating power, while its enable output terminal establishes an electrical connection with the switch control module. The core working logic of the standby switch module is as follows: when it receives a start signal from the user or system, such as a remote power-on command or a local trigger signal, it outputs a target electrical signal to the switch control module through its enable output terminal, triggering the subsequent main power supply to turn on. When no start signal is received, it does not output a target electrical signal and remains in a low-power sleep state, ensuring no additional power consumption is wasted in the standby link.

[0027] The switch control module is the execution unit for switching the main power supply on and off, essentially acting as a physical switch for the main power supply. Its first terminal is electrically connected to the main power control module and also to the power output terminal. The second terminal receives the enable output signal from the standby switch module, and the third terminal is directly grounded, forming a circuit. The core working logic of the switch control module is as follows: when the second terminal receives the target electrical signal output from the standby switch module, the first and third terminals are connected, allowing the main power control module to complete the grounding circuit, thus enabling the main power supply to conduct and supply power to the load. When the target electrical signal is not received, the first and third terminals are disconnected, and the main power control module, unable to form a valid circuit, disconnects, stopping power supply to the load. Furthermore, the switch control module can be implemented using switching devices such as transistors, MOSFETs, or relays; the specific type can be selected according to product requirements.

[0028] For example, the standby switch module can set a corresponding target electrical signal according to the triggering and conduction mechanism of the switch control module. For instance, when the switch control module is triggered at a high level, the standby switch module can output a high-level trigger signal at its enable output terminal as the target electrical signal, thereby triggering the switch control unit to conduct. Alternatively, when the switch control module is triggered at a low level, the standby switch module can output a low-level trigger signal at its enable output terminal as the target electrical signal, thereby triggering the switch control unit to conduct. Therefore, the standby switch module can be selected according to actual triggering requirements to meet the conduction and cutoff needs of the switch control module, and this embodiment does not impose specific limitations in this regard.

[0029] It should be noted that the embodiments disclosed herein achieve precise on / off switching of the main power supply through a three-level control link consisting of a small power supply, a standby switch, and a switch control module. Specifically, in standby mode, only the small power supply control module operates at low power to maintain the signal receiving capability of the control link, while the main power supply control module is disconnected due to the switch control module being cut off, avoiding the high standby power consumption caused by the continuous operation of the main power supply during traditional soft shutdown. In startup mode, a user command triggers the standby switch module to output a trigger signal, driving the switch control module to conduct, and the main power supply quickly starts up and supplies power to the load. This ensures both the convenience of intelligent control of the device and meets the requirements of green environmental protection and the goal of low standby power consumption. The entire link has a clear division of labor and is highly efficient, greatly reducing standby power consumption without affecting the normal control function of the device.

[0030] For example, when the electronic device is a smart lamp, the first AC input terminal of the main power control module is connected to 220V household AC power, and the load input terminal is directly connected to the lamp beads (core load) of the lamp. It can convert the AC power into the target DC voltage required for the lamp beads to light up and provide matching current. The small power control module, as a dedicated standby power supply unit, outputs a 3.3V or 5V low-power electrical signal as a power supply signal to continuously power the standby control module of the lamp and maintain the command receiving capability in standby mode. When the user issues a power-on command (start-up electrical signal) through wired trigger, mobile APP or other smart terminal, the enable output terminal of the standby control module outputs the target electrical signal to the switch control module, triggering the first and third terminals of the switch control module to conduct, forming a complete circuit of the main power supply, and the lamp beads are powered and lit. In standby mode, the standby switch module has no target electrical signal output, the switch control module is cut off, the main power supply is disconnected, and only the small power control module operates with low power consumption. This avoids the problem of continuous power consumption of the main power supply when the traditional smart lamp is soft-shutdown, and achieves a balance between convenient control and low power consumption.

[0031] Furthermore, given the large number of smart products, the cumulative energy consumption during standby of numerous smart lighting and other electronic products is enormous. Excessive standby power consumption would not meet the current green and environmentally friendly requirements. In the embodiments of this disclosure, the standby power consumption of the smart lighting fixtures, after adopting a standby control circuit, is reduced to less than 0.5W, which meets the green and environmentally friendly requirements of most regions (such as Europe).

[0032] It should be noted that the term "electrical connection" in this disclosure embodiment is also called "electrical link," which is a connection relationship used to illustrate this characteristic of the circuit when describing the circuit structure of a product. It can be understood as a form of connection between different components in the circuit structure through physical lines that can transmit electrical signals, such as PCB copper foil or wires. It is understood that the two electronic components in an "electrical connection" can be directly connected, or they can be indirectly connected by other electronic components in between.

[0033] In summary, in this embodiment, when the standby switch module receives the start signal, it outputs the target signal to the second terminal of the switch control module through the enable output terminal, thereby triggering the conduction between the first and third terminals of the switch control module. This allows the main power control module to be grounded and thus conduct, enabling it to supply power to the load through the load connection terminal. Conversely, when the standby switch module does not receive the start signal, the enable output terminal cannot output the target signal to the second terminal of the switch control module, and the first and third terminals of the switch control module are cut off. This prevents the main power control module from being grounded, causing it to disconnect and preventing it from supplying power to the load through the load connection terminal. In this case, only the small power control module is working in the circuit. Therefore, this embodiment uses an independent small power control module to supply power to the standby control link, avoiding the additional power consumption caused by the continuous power supply of the traditional main power supply. The standby switch module only outputs the target signal after receiving the start signal and goes into low-power sleep mode when not triggered, thus ensuring the normal operation of the circuit while reducing power consumption during standby.

[0034] Furthermore, the standby control circuit in this embodiment of the present disclosure also includes an isolation module, which is disposed between the switch control module and the main power control module, and between the power supply output terminal and the main power control module; wherein, the isolation module is provided with an optocoupler and a thyristor, the anode of the input side of the optocoupler is electrically connected to the power supply output terminal, the cathode of the input side of the optocoupler is electrically connected to the first terminal, and the output side of the optocoupler is electrically connected to the main power control module through the thyristor.

[0035] In the above embodiments, the isolation module is an electrical isolation barrier between the switch control module and the main power control module. Its core function is to achieve physical electrical isolation between the control side of the low-voltage, weak signal circuit and the main power supply side of the high-voltage, strong power circuit, so as to avoid high-voltage interference or surges on the main power supply side from damaging the low-voltage control link. At the same time, it accurately transmits the switch control signal to ensure the safety and stability of the circuit operation.

[0036] It should be noted that the isolation module in this embodiment consists of two core devices: an optocoupler and a thyristor. The optocoupler serves as the core for signal isolation and transmission. Its input anode is electrically connected to the power output terminal of the small power control module to obtain operating power; its input cathode is electrically connected to the first terminal of the switch control module to receive the on / off control signal from the switch control module; and its output side is electrically connected to the thyristor, which then forms a loop with the main power control module to achieve isolated transmission of control signals from the low voltage side to the high voltage side.

[0037] Specifically, when the standby switch module outputs a target electrical signal, triggering the first and third terminals of the switch control module to conduct, a complete current loop is formed on the input side of the optocoupler. The internal LED of the optocoupler lights up, driving the output side to conduct and transmitting a trigger signal to the thyristor. After receiving the trigger signal from the optocoupler, the thyristor conducts, thereby connecting the power supply loop between the main power control module and the mains power, allowing the main power supply to supply power to the load. Conversely, when the switch control module is turned off, no current flows through the input side of the optocoupler, the internal LED turns off, the output side is turned off, the thyristor is turned off, the loop between the main power control module and the mains power is disconnected, and the load stops working.

[0038] It should be noted that the isolation module achieves electrical isolation through optocoupler photoelectric conversion, ensuring that the low-voltage control link and the high-voltage main power link have no direct electrical connection. This effectively blocks the transmission of risks such as electromagnetic interference and voltage surges from the high-voltage side to the control side, protecting precision low-voltage components such as control chips and wireless modules from damage and improving the reliability and safety of the circuit. At the same time, the thyristor, as a stable switching device in high-voltage and high-current scenarios, can accurately respond to the trigger signal of the optocoupler, ensuring the timeliness and stability of the main power supply switching and adapting to the load power supply requirements of different power electronic devices.

[0039] Furthermore, in this embodiment of the present disclosure, the isolation module is provided with a first resistor and a second resistor. The first output terminal of the optocoupler is connected to one end of the first resistor, and the other end of the first resistor is connected to the control electrode of the thyristor. The second output terminal of the optocoupler is connected to the cathode of the thyristor and one end of the second resistor, respectively. The other end of the second resistor is connected to the anode of the thyristor. The control electrode and anode of the thyristor are electrically connected to the main power control module.

[0040] In the above embodiments, the first resistor and the second resistor are precise triggering auxiliary components and safety protection components in the isolation module that adapt to the operation of the optocoupler and the thyristor. Their core function is to adjust the signal parameters by current limiting and voltage division to ensure that the optocoupler trigger signal is stably transmitted to the thyristor, while protecting the core components such as the thyristor control electrode from current surges, thereby improving the reliability and stability of the isolation module and adapting to the control requirements of different power electronic devices.

[0041] From the perspective of connection, the first resistor serves as a current-limiting element for the optocoupler output signal. One end is directly connected to the first output terminal of the optocoupler, and the other end is connected to the control electrode (trigger signal receiving end) of the thyristor, forming a signal transmission path from the optocoupler to the control electrode of the thyristor. The second resistor serves as a stabilizing element for the thyristor's operating state. One end is connected to the second output terminal of the optocoupler, and this connection point is also connected to the cathode of the thyristor. The other end is directly connected to the anode of the thyristor, forming an auxiliary circuit between the cathode and anode of the thyristor. Finally, through the control electrode and anode of the thyristor, an electrical connection is established with the main power control module to achieve precise docking of the trigger signal with the main power circuit.

[0042] It should be noted that when the switch control module is turned on, the optocoupler input side forms a circuit and illuminates the internal LED, while the optocoupler output side is turned on and outputs a trigger current. At this time, the first resistor limits the magnitude of the trigger current to prevent excessive current from flowing directly into the control electrode of the thyristor and causing the device to burn out. At the same time, it adjusts the current to the threshold range required for thyristor triggering, ensuring that the thyristor conducts quickly and reliably, thereby connecting the main power control module to the mains power circuit. The second resistor forms a voltage divider / feedback circuit between the cathode and anode of the thyristor to stabilize the operating voltage of the thyristor, preventing false triggering or incomplete turn-off of the thyristor due to voltage fluctuations. This is especially effective in improving the stability of the thyristor operation in scenarios with mains power voltage fluctuations or small signal triggering. When the switch control module is turned off, the optocoupler output side is turned off, the first resistor cuts off the trigger current transmission, and the second resistor assists the thyristor in quickly returning to the off state, ensuring that the main power circuit is disconnected in a timely manner.

[0043] It should be noted that the value of the first resistor must be matched with the output current of the optocoupler and the trigger current threshold of the control electrode of the thyristor, so as to ensure that the trigger current is sufficient to drive the thyristor to conduct and to avoid current overload. The value of the second resistor needs to be adjusted according to the main power supply voltage and the characteristics of the thyristor model to balance the voltage division effect and power consumption, and ensure stable protection without increasing the additional standby power consumption.

[0044] Furthermore, in this embodiment of the present disclosure, the small power control module is provided with a second mains input terminal and a first voltage control module. The second mains input terminal is used to connect to the mains power to receive the mains power signal from the mains power. The input terminal of the first voltage control module is connected to the second mains input terminal. The output terminal of the first voltage control module is a power supply output terminal. The first voltage control module is used to convert the mains power signal into a power supply signal output by the power supply output terminal.

[0045] In the above embodiments, the small power control module realizes the power supply of the standby control module through the core structure of the second mains input terminal and the first voltage control module. It can independently draw power from the mains and convert it into a low-power power supply signal adapted to the control link, ensuring that the control link can still maintain normal operation when the main power is disconnected.

[0046] From a structural connection perspective, the second AC input terminal is the AC input port of the small power supply control module, used to directly establish an electrical connection with the AC power and independently receive AC power signals; the first voltage control module is the core unit of voltage conversion, its input terminal is electrically connected to the second AC input terminal, receives the raw electrical signals from the AC power, and its output terminal directly serves as the power supply output terminal of the small power supply control module, electrically connected to control link devices such as the standby switch module and isolation module, forming a complete standby power supply circuit.

[0047] The core function of the first voltage control module is voltage conversion and adaptation. Specifically, it converts the high-voltage AC mains signal connected to the second mains input terminal into the low-power DC power supply signal required by the control link. This conversion process must meet the power supply requirements of low-voltage devices such as the control chip and wireless module, ensuring voltage stability and current matching while minimizing its own power consumption. Therefore, the power design of the first voltage control module is much smaller than that of the main power control module.

[0048] It should be noted that the independent design of the second AC input terminal allows the small power control module to draw power independently without relying on the main power supply, completely severing the connection between standby power consumption and the main power supply; the precise voltage conversion function of the first voltage control module ensures the stable operation of the control link devices, while its low-power design directly determines the upper limit of the standby power consumption of the whole machine.

[0049] Furthermore, in this embodiment of the present disclosure, the first voltage control module includes a first rectifier module, a first switching power supply control module, an isolation transformer, and a first filter module. One end of the first rectifier module is electrically connected to the second mains input terminal, and the other end of the first rectifier module and one end of the first switching power supply control module are respectively electrically connected to one end of the isolation transformer. The other end of the first switching power supply control module is grounded, and a first filter module is provided between the other end of the isolation transformer and the power supply output terminal.

[0050] In the above embodiments, the first voltage control module can be a power isolation control circuit, which is the core of the isolated voltage conversion of the small power control module. Through the closed-loop link of rectification isolation, voltage regulation and filtering, it realizes the safe and stable conversion of the mains power signal to the low power supply signal. Its core function is to achieve high and low voltage electrical isolation through the isolation transformer while completing the voltage conversion, so as to avoid high voltage interference or risk transmission from the mains side to the control link. It is suitable for electronic equipment scenarios with high safety requirements.

[0051] Specifically, one end of the first rectifier module is directly connected to the mains power supply to receive the raw mains signal, while the other end is electrically connected to one end of the isolation transformer. This isolation transformer converts the sinusoidal AC mains power into a pulsating DC signal, laying the foundation for subsequent voltage regulation. The isolation transformer connects to both the output of the first rectifier module and one end of the first switching power supply control module, while the other end is electrically connected to the first filter module. This achieves both physical and electrical isolation between the mains side (high voltage) and the control link side (low voltage), and also allows for voltage adaptation (e.g., 3.3V, 5V) through the coil turns ratio. One end of the first switching power supply control module is connected to the isolation transformer. One end is connected to the ground to form a loop. The energy transmission of the isolation transformer is adjusted by means of pulse width modulation (PWM) to precisely control the amplitude of the output voltage, ensure the stability of the power supply signal, and avoid voltage fluctuations affecting the operation of the control device. Furthermore, the other end of the first switching power supply control module can also be connected in series with a sampling circuit during the grounding process. This embodiment does not impose specific restrictions on this. The first filtering module is connected in series between the other end of the isolation transformer and the power supply output terminal. It is responsible for filtering out the noise signals (such as high-frequency interference and voltage ripple) that remain after rectification and voltage regulation, and outputting a smooth and pure DC power supply signal.

[0052] It should be noted that throughout the entire operation, the isolation transformer maintains a constant high- and low-voltage isolation state, the first switching power supply control module continuously stabilizes the voltage, and the first filtering module ensures signal purity, guaranteeing that the control link operates with low power consumption and reliably receives user commands in standby mode. This structure belongs to an isolated power supply solution, which enhances circuit safety through the isolation transformer and is suitable for scenarios with electrical isolation requirements (such as high-power smart home appliances and export products). The selection of each sub-module can be flexibly adjusted. For example, isolation transformers with different turns ratios can be selected according to the output voltage requirements, and the specifications of the switching power supply control module can be matched according to the power consumption requirements, ensuring both the stability and safety of voltage conversion without increasing standby power consumption.

[0053] Furthermore, in this embodiment of the present disclosure, the first voltage control module includes a second rectifier module, a second switching power supply control module, and a second filter module. One end of the second rectifier module is electrically connected to the second mains input terminal, and the other end of the second rectifier module is electrically connected to one end of the second switching power supply control module. A second filter module is provided between the other end of the second switching power supply control module and the power supply output terminal.

[0054] In the above embodiments, the first voltage control module can also be a power supply non-isolated control circuit, which realizes efficient and low-cost conversion of mains power signals to low-power supply signals through rectification, voltage regulation and filtering.

[0055] Specifically, one end of the second rectifier module is electrically connected to the mains power supply to receive the original mains power signal, and the other end is electrically connected to one end of the second switching power supply control module to convert the sinusoidal AC mains power into a pulsating DC signal, providing the basic input for subsequent voltage stabilization regulation. The second switching power supply control module is the core unit for precise voltage regulation. One end is connected to the output end of the second rectifier module, and the other end is connected to the input end of the second filter module. It dynamically adjusts the power transmission through technologies such as pulse width modulation (PWM) to convert the pulsating DC signal into a low-voltage DC signal (such as 3.3V or 5V) with stable voltage and current matching. The second filter module is connected in series between the other end of the second switching power supply control module and the power supply output end. It is responsible for filtering out high-frequency noise, voltage ripple and other interference signals remaining after rectification and voltage regulation, and outputting a smooth and clean DC power supply signal to ensure the stable operation of control link devices (such as control chips, wireless modules, etc.).

[0056] It should be noted that this structure is a non-isolated power supply solution. It achieves low cost, miniaturization, and high conversion efficiency through simplified circuit design, making it suitable for scenarios where electrical isolation is not mandatory. The selection of each submodule is flexible, and specifications can be adjusted according to output voltage (e.g., 3.3V, 5V) and power consumption requirements, ensuring power supply stability without sacrificing the core goal of low power consumption. It complements isolated structures, jointly covering product scenarios with different cost, space, and safety requirements.

[0057] Furthermore, in this embodiment of the present disclosure, the small power control module is provided with a battery module and a second voltage control module. The battery module is electrically connected to the input terminal of the second voltage control module to transmit a battery electrical signal to the second voltage control module. The output terminal of the second voltage control module is a power supply output terminal. The second voltage control module is used to convert the battery electrical signal into a power supply signal output by the power supply output terminal.

[0058] In the above embodiments, the small power control module can also adopt an independent battery power supply scheme (not shown in the figure). Through battery energy storage and voltage adaptation, it can realize offline power supply of the standby control link, adapt to electronic device scenarios where there is no mains power access, mobile use is required, or backup power is required, and ensure that even if there is no mains power, the device can still maintain standby state and respond to start commands.

[0059] Specifically, the battery module acts as a built-in energy reservoir for the small power control module. It is directly electrically connected to the input of the second voltage control module, storing electrical energy and outputting raw battery electrical signals (such as 3.7V for lithium batteries or 1.5V for dry cell batteries). This provides an independent and continuous power source for the entire standby control link, eliminating the need for a connection to mains power and making it suitable for portable, mobile, or smart devices without a fixed mains power supply. The input of the second voltage control module receives the raw battery electrical signals output by the battery module, and its output directly serves as the power supply output for the small power control module. It is electrically connected to control link devices such as the standby switch module and wireless module, converting the unstable raw electrical signals output by the battery module into stable, low-power power supply signals (such as 3.3V) required by the control link.

[0060] It should be noted that the battery module can be selected from different types such as lithium batteries, dry batteries, and button batteries according to product requirements. The conversion parameters of the second voltage control module can be flexibly adapted to the battery voltage and control link requirements, ensuring power supply stability while maintaining low power consumption operation, which meets green and environmental protection requirements.

[0061] Furthermore, in this embodiment of the present disclosure, the standby switch module is a wireless module. After receiving the start electrical signal transmitted wirelessly, the wireless module outputs the target electrical signal through the enable output terminal.

[0062] In the above embodiments, specifically in this disclosure, the standby switch module is a smart wireless module. Its core role is a wireless trigger control unit for the main power supply switching. It not only continues the basic function of the standby switch module signal gate, but also adds wireless communication capabilities to adapt to the remote / wireless control scenarios of smart devices.

[0063] Specifically, the standby input terminal of the wireless module is electrically connected to the power supply output terminal of the small power supply control module, and maintains its basic operation through the low-power power supply signals such as 3.3V and 5V provided by the small power supply; its enable output terminal is still electrically connected to the second terminal of the switch control module to ensure the effective transmission of the trigger signal.

[0064] For example, the wireless module has built-in wireless communication chips such as Bluetooth, WiFi, and ZigBee, which can monitor external wireless start signals in real time. These signals can come from remote power-on commands issued by users through mobile apps, smart speakers, etc., or from start signals sent by local wireless triggering devices (such as wireless remote controls). When the wireless module receives a valid start signal through the wireless communication link, it will immediately output a target electrical signal (high or low level, adapted to the triggering mechanism of the switch control module) to the switch control module through the enable output terminal, thereby driving the switch control module to conduct, forming a circuit for the main power control module and providing the triggering condition for powering the load. If no wireless start signal is received, the wireless module will remain in a low-power sleep state, maintaining only a minimum wireless monitoring capability and not outputting a target electrical signal to avoid extra power consumption waste.

[0065] In addition to wireless modules, standby switch modules can also use local trigger modules (such as mechanical buttons, touch sensing modules, infrared receiving modules), wired control modules, or system-built-in automatic trigger modules (such as timed trigger modules and environmental sensing trigger modules). These modules obtain power from the small power control module through the standby input terminal. After receiving start electrical signals such as local pressing signals, wired commands, timed signals, or environmental sensing signals, they output the target electrical signal through the enable output terminal to trigger the switch control module to act, adapting to the control needs of different scenarios.

[0066] Furthermore, in this embodiment of the present disclosure, the switch control module is an NPN transistor, with the first terminal being the collector of the NPN transistor, the second terminal being the base of the NPN transistor, and the third terminal being the emitter of the NPN transistor.

[0067] In the above embodiments, the switch control module is specifically implemented using an NPN transistor. Relying on the conduction / cutoff characteristics of the NPN transistor, it achieves precise and fast circuit control, and has the advantages of low cost, small size, and fast response, making it suitable for the low power consumption design requirements of various small and medium-sized intelligent electronic devices.

[0068] Specifically, the collector of the NPN transistor corresponds to the first terminal of the switch control module, which is electrically connected to the main power control module and serves as the input terminal for main power current transmission; the base of the NPN transistor corresponds to the second terminal of the switch control module, which is electrically connected to the enable output terminal of the standby switch module and serves as the control terminal for receiving trigger signals; the emitter of the NPN transistor corresponds to the third terminal of the switch control module, which is directly grounded to form a current loop and serves as the current output terminal.

[0069] When the standby switch module receives the start signal and outputs the target signal (a high-level trigger signal adapted to an NPN transistor), the target signal is transmitted to the base (second terminal) of the NPN transistor, giving the base a forward bias voltage and satisfying the conduction condition of the NPN transistor. At this time, a conduction loop is formed between the collector (first terminal) and the emitter (third terminal). Since the emitter is grounded, the main power control module completes the grounding loop after connecting to the conduction loop through the collector, thereby enabling the main power control module to conduct. When the standby switch module does not receive the start signal or output the target signal, the base of the NPN transistor has no forward bias voltage, and the collector and emitter are in a cutoff state. The main power control module is disconnected because it cannot form an effective grounding loop, stopping the power supply to the load. At this time, only the small power control module operates at low power to ensure reduced standby power consumption.

[0070] In addition to the above, the switch control module can also be other electronic components. For example, the switch control module can be a MOSFET (such as an N-channel enhancement-mode MOSFET). The drain (D) of the N-channel enhancement-mode MOSFET corresponds to the first terminal of the switch control module and is electrically connected to the power supply link of the main power control module; the gate (G) corresponds to the second terminal of the switch control module and is electrically connected to the enable output terminal of the standby switch module (a voltage divider resistor is required to match the drive voltage); the source (S) corresponds to the third terminal of the switch control module and is directly grounded. When the standby switch module outputs a target electrical signal (high level), the gate receives a sufficient drive voltage, and a conductive channel is formed between the drain and source of the MOSFET, which is in a conducting state. The main power control module supplies power to the load through the drain and source grounding. When the standby switch module has no target electrical signal, the gate voltage is insufficient, the drain and source are cut off, the main power supply is disconnected, and only the small power supply maintains the operation of the control link, resulting in low and stable standby power consumption. Furthermore, the switch control module can also be a thyristor or a relay, and this embodiment does not impose specific limitations on this.

[0071] The standby control circuit in the above embodiments will be illustrated below with reference to the accompanying drawings: For example, please refer to Figure 2 , Figure 2 This is a circuit structure diagram of the main part of the standby control circuit provided in this embodiment. In the standby control circuit of this embodiment, the first mains input terminal includes a live wire L and a neutral wire N. The main power control module includes a fuse F1, a thermistor RT1, a varistor RT2, a common mode inductor LF1, a capacitor CX1, a rectifier bridge DB1, a capacitor C2, a capacitor C3, and a resistor R5. The isolation module includes an optocoupler U1, a silicon controlled rectifier SCR1, a resistor R4 (first resistor), and a resistor R6 (second resistor). The control switch module includes an NPN transistor Q1. In addition, the circuit also includes resistors R1 and R2.

[0072] In this circuit, the mains live wire L, fuse F1, varistor RT2, thermistor RT1 and mains neutral wire N are connected in sequence. Varistor RT2 is connected in parallel with common-mode inductor LF1. F1 is used for overcurrent protection to prevent excessive current from damaging components when the circuit is short-circuited. RT1 is a negative temperature coefficient thermistor to suppress surge current when the circuit is turned on. RT2 is used for overvoltage protection. LF1 is used to filter out common-mode interference signals in the mains power. Safety capacitor CX1 is connected in parallel at the output of LF1 to further suppress electromagnetic interference and ensure the electromagnetic compatibility of the circuit. After EMC filtering, the live wire L and neutral wire N are connected to the input of the rectifier bridge DB1 in the main power control circuit (main power AC to DC circuit). DB1 rectifies the AC mains power into pulsating DC power. The output of DB1 is connected to filter capacitors C2 and C3 to filter out the ripple of the rectified DC power, making the voltage more stable. The stable voltage is then input to subsequent conversion units of the main power supply, such as the load and load control circuit, and finally converted into the target DC voltage required by the load. This voltage is then connected to the equipment load through the load power supply terminal. Capacitor C2 is also connected in series with resistor R5. Furthermore, a main power safety isolation circuit can be connected between the load and the load control circuit and the load connection terminal to provide power isolation and protection.

[0073] In this embodiment, the small power supply control circuit (small power supply AC to DC circuit) outputs a 3.3V power supply signal, which is connected to the anode (pin 1) of the input side of the optocoupler U1. The enable output terminal IO0 is connected to the base of Q1 after a series resistor R1. R1 is used to limit the input current of the optocoupler to avoid damage to the components. The collector of Q1 is connected to the cathode (pin 2) of the input side of the optocoupler U1. The emitter of Q1 is grounded. The first output terminal (pin 6) of the optocoupler U1 is connected to the control electrode of the silicon controlled rectifier SCR1 through a resistor R4. The second output terminal (another terminal, pin 4) of the optocoupler U1 is connected to the cathode of the silicon controlled rectifier SCR1 and a resistor R6. The other end of the resistor R6 is connected to the anode of the silicon controlled rectifier SCR1. When IO0 outputs a high-level target electrical signal, the internal LED of optocoupler U1 is turned on, and the output transistor is saturated and turned on, providing trigger current to the control electrode of SCR1, causing SCR1 to turn on. The main power supply AC to DC circuit is powered and supplies power to the load. When IO0 outputs a low level, optocoupler U1 is turned off, SCR1 loses the trigger current and is cut off, the main power supply is disconnected, and only the small power control module works, achieving low standby power consumption.

[0074] For example, please refer to Figure 3 , Figure 3This is a circuit structure diagram of the small power supply control circuit provided in this embodiment. The small power supply control module in this embodiment is an isolated voltage control circuit. The second mains input terminal also includes a live wire L and a neutral wire N. The first rectifier module is a rectifier bridge DB2. The first switching power supply control module is a control chip U2. The isolation transformer is T1A. The first filter module is a capacitor EC2. In addition, it also includes a filter capacitor EC1, absorption circuit elements (resistor R3, capacitor C1, diode D1), current sampling resistors RS1 and RS2, and a standby switch module is an intelligent wireless module 1 (U3).

[0075] The live wire L and the neutral wire N are connected to the input of rectifier bridge DB2, which rectifies the AC mains power into unidirectional pulsating DC power. A filter capacitor EC1 is connected in parallel to the output of rectifier bridge DB1 to initially filter out ripple in the pulsating DC power, making the voltage more stable. The output of DB1 is also connected to the primary winding of isolation transformer T1A, providing DC input for the transformer stage. One end of the primary winding of isolation transformer T1A is also connected in parallel to an absorption circuit consisting of resistor R3 and capacitor C1, and in series with diode D1. This circuit is used to suppress switching... The generated voltage spikes are prevented from damaging the control chip U2. The DRAIN pin (pin 8) of the control chip U2 is connected to the primary winding of T1A, and the CS pin (pin 4) is connected to the series node of the current sampling resistors RS1 and RS2. The other ends of RS1 and RS2 are connected to the signal ground GGND. The two are used to sample the primary circuit current to achieve overcurrent protection. The secondary winding of the isolation transformer T1A is connected in parallel with the filter capacitor EC2. It receives the energy of the primary winding through electromagnetic induction and filters out the ripple through EC2 to output a stable 3.3V power supply signal. This 3.3V power supply signal is connected to the VCC pin (standby input) of the intelligent wireless module 1. The GND pin of the intelligent wireless module 1 is connected to the signal ground GGND. Its Reset pin is the reset interface, the IO0 pin is the enable output (used to output the target electrical signal), RX and TX are the communication interfaces, and IO1 is the extended function interface.

[0076] Furthermore, the mains power L and N are rectified by DB2 and filtered by EC1 before being input to the primary winding of T1A. The control chip U2 regulates the switching frequency of the primary winding through the DRAIN pin. R3, C1, and D1 suppress switching spikes to protect U2. RS1 and RS2 work with U2 to achieve overcurrent protection. T1A transfers energy to the secondary winding through electromagnetic induction. After being filtered by EC2, it outputs a stable 3.3V voltage to power the intelligent wireless module 1 and the optocoupler U1. The intelligent wireless module 1 acts as a standby switch module. After receiving the start signal, it can output a high-level target signal through IO0 to trigger the subsequent switch control module. When not triggered, it enters low-power sleep mode to ensure the low-power characteristics of the standby link.

[0077] For example, please refer to Figure 4 , Figure 4 This is another circuit structure diagram of the small power supply control circuit provided in this embodiment. The small power supply control module in this embodiment is a non-isolated voltage control circuit. The second mains input terminal also includes a live wire L and a neutral wire N. The second rectifier module includes a rectifier bridge DB3. The second switching power control module includes a control chip U4. The second filter module includes a capacitor EC4. In addition, the circuit also includes a capacitor EC3, a resistor R7, a resistor R8, a diode D2, and an inductor L2. The standby switch module in this embodiment is a smart wireless module 2 (U5).

[0078] The live wire L and neutral wire N are connected to the input of rectifier bridge DB3 to rectify the AC mains power into pulsating DC power. A filter capacitor EC3 is connected in parallel to the output of rectifier bridge DB3 to initially filter out the ripple of the rectified DC power, making the voltage more stable. The rectified and filtered voltage is connected to the VN pin of control chip U4 to provide the operating power input for U4. The GND pin of U4 is connected to common ground to provide the circuit reference potential. The SW (switch output) pin of U4 is connected to one end of resistor R8 and one end of inductor L2. R8 is used for current limiting protection during the switching process, and inductor L2 acts as an energy storage inductor, storing energy when the switch is on and releasing energy to the load when it is off. The FB (feedback) pin of U4 is connected to the output side node through resistor R7 to collect the output voltage signal and feed it back to U4, allowing U4 to adjust the switching duty cycle to stabilize the output voltage. The other ends of resistor R8 and inductor L2 are connected together... Connect the negative terminal of diode D2 and the positive terminal of filter capacitor EC4. This node also serves as the power supply terminal, connecting to the VCC pin (standby input) of the smart wireless module 2. D2 is a freewheeling diode, used to provide a freewheeling path when L2 releases energy, preventing damage to components from the inductor's reverse electromotive force. EC4 is an output filter capacitor, further filtering out output ripple and providing a stable 3.3V operating voltage for the smart wireless module 2. The positive terminal of diode D2, the negative terminal of EC4, and the GND pin of the smart wireless module 2 are all connected to a common ground. The smart wireless module 2 acts as a standby switch module, and can switch between standby and working states through its own logic in conjunction with U4. Its IO0 (enable output), RX, TX, and IO1 are functional interaction interfaces. IO0 can also be connected to the other end of resistor R1. A high-level trigger signal can be output through IO0 as the target electrical signal, without specific restrictions.

[0079] The electronic device provided in the embodiments of this disclosure is described below: like Figure 5 As shown, Figure 5 This is a schematic diagram of an electronic device provided in an embodiment of this disclosure. This disclosure provides an electronic device including the standby control circuit described in any of the foregoing embodiments.

[0080] It should be noted that the standby control circuit of this disclosure can be widely used in electronic devices that require intelligent control, support soft shutdown, and have requirements for standby power consumption, including smart home appliances (such as smart air conditioners, coffee machines, and rice cookers), smart furniture (such as smart curtains, smart sockets, and smart lamps), and portable smart electronic products (such as wireless sensors and mobile smart controllers). These devices generally rely on mobile apps or wireless modules for remote control. In the traditional soft shutdown state, the main power supply continues to consume power, resulting in excessive standby power consumption. However, by adopting this circuit, the main power supply can be cut off during standby, and the control link can be maintained only through a small power supply. This ensures that the device can respond to the start command at any time and reduces standby power consumption, meeting the requirements for green environmental protection.

[0081] When the electronic device is a smart lighting fixture, the standby control circuit can precisely adapt to its operating requirements. For example, the main power control module connects to 220V AC mains power, converting AC power into the DC voltage required by the LED beads, and the load input terminal connects to the LED beads; the small power control module outputs a 3.3V or 5V low-power electrical signal to power the wireless module of the lighting fixture, maintaining the remote command receiving capability in standby mode; when the user sends a power-on command (start electrical signal) via a mobile APP, the standby switch module triggers the switch control module to conduct, the main power is turned on, and the LED beads light up; in standby mode, the main power is disconnected, and only the small power control module operates with low power consumption, thereby solving the problem of continuous power consumption of the main power supply when the traditional smart lighting fixture is soft-shutdown, ensuring both the convenience of remote control and meeting the environmental protection and compliance requirements of low standby power consumption. This embodiment is only used as an example of an electronic device as a lighting fixture, but it does not represent a limitation on the embodiments of this disclosure.

[0082] The specific implementation of this electronic device is basically the same as the specific embodiment of the standby control circuit described above, and will not be repeated here. Subject to meeting the requirements of the embodiments of this disclosure, the electronic device may also be equipped with other functional modules or circuits to achieve the function of the standby control circuit in the above embodiments.

[0083] The embodiments described in this disclosure are intended to illustrate the technical solutions of this disclosure more clearly, and do not constitute a limitation on the technical solutions provided by this disclosure. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided by this disclosure are also applicable to similar technical problems.

[0084] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this disclosure, and may include more or fewer steps than shown, or a combination of certain steps, or different steps. It should be noted that the relay adhesion detection method in the embodiments of this disclosure may also have other steps to achieve the adhesion detection process of the target relay implemented in the standby control circuit or electronic device in the above embodiments, which will not be elaborated further here.

[0085] Those skilled in the art will understand that all or some of the steps, apparatuses, or functional modules / units in the methods disclosed above can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0086] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in this disclosure and the foregoing drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0087] It should be understood that in this disclosure, "at least one item" means one or more, and "more than one" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0088] The preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present disclosure. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and spirit of the present disclosure shall be within the scope of the claims of the present disclosure.

Claims

1. A standby control circuit, characterized in that, include: The main power control module is provided with a first mains power input terminal and a load connection terminal. The first mains power input terminal is used to connect to the mains power, and the load connection terminal is used to connect to the load. The small power control module is provided with a power output terminal, and the small power control module is used to output a power supply signal through the power output terminal. A standby switch module is provided with a standby input terminal and an enable output terminal. The standby input terminal is electrically connected to the power supply output terminal. When the standby switch module receives a start electrical signal, the standby switch module outputs a target electrical signal through the enable output terminal. The switch control module is provided with a first terminal, a second terminal and a third terminal. The first terminal is electrically connected to the main power control module and is also electrically connected to the power supply output terminal. The second terminal is electrically connected to the enable output terminal. The third terminal is grounded. When the second terminal receives the target electrical signal output by the enable output terminal, the first terminal and the third terminal are connected.

2. The standby control circuit according to claim 1, characterized in that, It also includes an isolation module, which is disposed between the switch control module and the main power control module, and between the power supply output terminal and the main power control module; The isolation module is equipped with an optocoupler and a thyristor. The anode of the input side of the optocoupler is electrically connected to the power supply output terminal, the cathode of the input side of the optocoupler is electrically connected to the first terminal, and the output side of the optocoupler is electrically connected to the main power control module through the thyristor.

3. The standby control circuit according to claim 2, characterized in that, The isolation module is provided with a first resistor and a second resistor. The first output terminal of the optocoupler is connected to one end of the first resistor, and the other end of the first resistor is connected to the control electrode of the thyristor. The second output terminal of the optocoupler is connected to the cathode of the thyristor and one end of the second resistor, respectively. The other end of the second resistor is connected to the anode of the thyristor. The control electrode and anode of the thyristor are electrically connected to the main power control module.

4. The standby control circuit according to claim 1, characterized in that, The small power control module is provided with a second AC power input terminal and a first voltage control module. The second AC power input terminal is used to connect to the AC power supply to receive AC power signals from the AC power supply. The input terminal of the first voltage control module is connected to the second AC power input terminal. The output terminal of the first voltage control module is the power supply output terminal. The first voltage control module is used to convert the AC power signals into the power supply signals output by the power supply output terminal.

5. The standby control circuit according to claim 4, characterized in that, The first voltage control module includes a first rectifier module, a first switching power supply control module, an isolation transformer, and a first filter module. One end of the first rectifier module is electrically connected to the second mains input terminal. The other end of the first rectifier module and one end of the first switching power supply control module are respectively electrically connected to one end of the isolation transformer. The other end of the first switching power supply control module is grounded. The first filter module is provided between the other end of the isolation transformer and the power supply output terminal.

6. The standby control circuit according to claim 4, characterized in that, The first voltage control module includes a second rectifier module, a second switching power supply control module, and a second filter module. One end of the second rectifier module is electrically connected to the second mains input terminal, and the other end of the second rectifier module is electrically connected to one end of the second switching power supply control module. The second filter module is provided between the other end of the second switching power supply control module and the power supply output terminal.

7. The standby control circuit according to claim 1, characterized in that, The small power control module includes a battery module and a second voltage control module. The battery module is electrically connected to the input terminal of the second voltage control module to supply a battery electrical signal to the second voltage control module. The output terminal of the second voltage control module is the power supply output terminal. The second voltage control module is used to convert the battery electrical signal into the power supply electrical signal output by the power supply output terminal.

8. The standby control circuit according to claim 1, characterized in that, The standby switch module is a wireless module. After receiving the start electrical signal transmitted wirelessly, the wireless module outputs the target electrical signal through the enable output terminal.

9. The standby control circuit according to claim 1, characterized in that, The switch control module is an NPN transistor, with the first terminal being the collector of the NPN transistor, the second terminal being the base of the NPN transistor, and the third terminal being the emitter of the NPN transistor.

10. An electronic device, characterized in that, Includes the standby control circuit as described in any one of claims 1 to 9.

Images