859results about "Arrangements responsive to undervoltage" patented technology

The invention discloses a 5G base station power supply state intelligent monitoring system and method, and belongs to the technical field of intelligent monitoring. According to the system, operation parameters of a 5G base station power supply are acquired in real time through the data acquisition module, and after the operation parameters are processed by the signal conditioning and conversion module, the master control processing unit analyzes digital signals in real time, detects abnormal states and generates alarm information. The communication module is responsible for data transmission and instruction receiving, and the power management and safety protection module provides overvoltage, undervoltage, overcurrent and short circuit protection and triggers emergency measures. The artificial intelligence analysis module performs fault prediction and performance optimization based on historical data and real-time data, and the remote monitoring terminal realizes data visual monitoring and management. According to the invention, the real-time performance and accuracy of monitoring are improved, unified management of multiple base stations is realized, the operation and maintenance cost is reduced, and stable operation of a 5G communication network is guaranteed.

The invention relates to the technical field of high-voltage integrated circuits, and provides an under-voltage protection high-voltage integrated circuit. Comprising an RC filter circuit, a Schmidt circuit, a filter, a level conversion circuit, a temperature protection circuit, an undervoltage protection circuit, an overcurrent protection circuit, a fault logic control circuit, a fault output circuit, a bootstrap circuit, a dead zone interlocking circuit, a time delay circuit, a pulse circuit, a first high-voltage DMOS, a second high-voltage DMOS, an RS trigger, an output circuit and an AND gate. The under-voltage protection circuit comprises a voltage stabilizing circuit, a power supply voltage detection circuit, a comparator and a first NMOS tube. The input end of the voltage stabilizing circuit serves as the input end of the under-voltage protection circuit to be connected with power supply voltage, and the output end of the voltage stabilizing circuit is connected with the input end of the power supply voltage detection circuit and the negative input end of the comparator. According to the invention, the working stability and reliability of the HIVC in an application occasion with relatively large temperature change are improved, and the market competitiveness of a product is improved.

The invention provides an intelligent socket control system and method based on an overvoltage and undervoltage protector, and relates to the technical field of intelligent socket control. Load bias utility of an intelligent socket under different working conditions is extracted, load attribute identification is performed on voltage state information, and a load identification tag of a load side in an intelligent socket access circuit is generated; determining a voltage out-of-limit level of the voltage at the front end of the intelligent socket in an overvoltage and undervoltage state; after the dissimilatory breaking criterion is executed to cut off a load power supply loop, a reset response strategy corresponding to the voltage at the front end of the intelligent socket is generated, and then a tolerance adaptation rule of the voltage at the front end of the intelligent socket when the overvoltage and undervoltage fault is removed is determined; and performing adaptive resetting on the power supply planning table of the power supply state in the current intelligent socket access circuit according to the voltage out-of-limit level and the tolerance adaptation rule. According to the invention, differentiated adaptive control can be carried out on load power supply under the activation of an overvoltage and undervoltage protection mechanism, so that the adaptability of the intelligent socket to complex working conditions is improved.

The invention discloses a power supply intelligent protection control method and device and an intelligent power supply, and the method comprises the steps: carrying out the curve fitting of i historical voltages, and obtaining a historical voltage curve; performing curve fitting on the j historical currents to obtain a historical current curve; determining a first voltage curve of the intelligent power supply in a future time period according to the historical voltage curve; determining a first current curve of a future time period according to the historical current curve; determining an overvoltage protection threshold curve and an undervoltage protection threshold curve according to the load power curve of the future time period; determining an overcurrent protection threshold curve according to the load power curve; determining a target critical point according to the first voltage curve, the first current curve, the overvoltage protection threshold curve, the undervoltage protection threshold curve and the overcurrent protection threshold curve; and controlling the protection device to execute a power supply protection operation corresponding to the target critical point. The safety of the intelligent power supply can be improved.

The invention relates to the technical field of protectors, in particular to a self-resetting overvoltage and undervoltage protector easy to disassemble and assemble, the self-resetting overvoltage and undervoltage protector easy to disassemble and assemble is assembled on a fixed seat, and a sliding rail is arranged on the fixed seat; the self-recovery over-voltage and under-voltage protector easy to disassemble and assemble comprises a body, and the body is slidably connected to a sliding rail in a sleeving mode. A first clamping part, a second clamping part and an adjusting part are arranged on the body, and the first clamping part is used for clamping a live wire or a zero wire; the second clamping part comprises two first clamping elastic pieces which are symmetrically arranged, the first clamping elastic pieces are of hook-shaped structures, the hook ends of the first clamping elastic pieces are arranged in a suspended mode, the other ends of the first clamping elastic pieces are fixedly arranged on the body, and the two first clamping elastic pieces can swing around the other ends of the first clamping elastic pieces correspondingly. The hook ends are jointly and elastically hooked on the two sides of the sliding rail; and the adjusting part is configured to be capable of adjusting the clamping force of the second clamping part on the sliding rail, so that the disassembly and assembly steps can be simplified, the disassembly and assembly efficiency can be improved, and the installation effect can be guaranteed.

The embodiment of the invention provides a circuit protection device and a chip, and the device comprises a detection module which is used for detecting whether the voltage of a power supply exceeds a voltage protection threshold, and outputting a low-level signal to a time hysteresis control module when the voltage exceeds the voltage protection threshold; if not, a high-level signal is output to the time hysteresis control module; the time hysteresis control module is used for receiving the low-level signal output by the detection module and controlling an MOS tube in the time hysteresis control module to be turned off; and the control module is used for receiving the high-level signal output by the detection module, timing and controlling the MOS tube to start when the timing time reaches the preset time, so that the problem that the power supply end fluctuates between a protection mode and a normal working mode when the input power supply rapidly fluctuates in the overvoltage and power failure protection circuit in the related technology is solved. In addition, common simple devices are needed for implementation, the cost is low, and the reliability is high.

The invention provides a software and hardware cooperation power supply protection circuit of a power distribution automation terminal, which comprises a power supply input protection circuit, a voltage conversion circuit, a power failure detection circuit, a voltage maintenance protection circuit and a clock backup battery protection circuit, and is characterized in that the power failure detection circuit adopts a photoelectric isolation technology to monitor a power supply input state in real time; when it is detected that the power supply is disconnected or powered down, a specific level signal is output, and power down event detection is triggered; on the software level, the function of a power failure detection pin is defined in an equipment tree, the power failure detection pin is configured to be an interrupt trigger pin, the power failure detection pin is initialized, interrupt is requested, an interrupt trigger condition is set to be level change, and a power failure detection event is triggered when the interrupt trigger condition occurs. According to the method, system damage caused by accidental power failure is eliminated in a software and hardware combination mode, the reliability of the terminal is remarkably improved, the service life of the terminal is remarkably prolonged, the software has enough time to complete file operation through power failure protection, and therefore the purpose of protecting the file system is achieved.

The invention discloses a high-voltage pre-modulation circuit. The high-voltage pre-modulation circuit comprises a port protection circuit, a self-starting biasing circuit, a reference circuit and a step-down modulation circuit, the port protection circuit has a negative voltage protection function, when the port voltage is negative voltage, voltage transmission can be blocked, and internal devices are prevented from being damaged; the self-starting bias circuit is quickly conducted when the power supply is powered on, provides bias current for the port protection circuit and provides bias voltage for the step-down modulation circuit; the reference circuit takes the output voltage of the step-down modulation circuit as the power supply voltage, and the output reference voltage of the reference circuit is the reference level of the step-down modulation circuit; the step-down modulation circuit can realize the function of converting high power supply voltage into low voltage VOUT, and provides stable power supply voltage for other modules in the integrated circuit. The high-voltage pre-modulation circuit with the negative-voltage protection function has the negative-voltage protection function, only one path of power supply voltage is needed, high reliability is achieved, and meanwhile the system design difficulty is lowered.

The present application discloses an intelligent power protection control method, device, and intelligent power supply. The method includes: performing curve fitting on i historical voltages to obtain a historical voltage curve; performing curve fitting on j historical currents to obtain a historical current curve; determining a first voltage curve of the intelligent power supply in a future time period according to the historical voltage curve; determining a first current curve of the future time period according to the historical current curve; determining an overvoltage protection threshold curve and an undervoltage protection threshold curve according to the load power curve of the future time period; determining an overcurrent protection threshold curve according to the load power curve; determining a target critical point according to the first voltage curve, the first current curve, the overvoltage protection threshold curve, the undervoltage protection threshold curve, and the overcurrent protection threshold curve; and controlling a protection device to perform a power protection operation corresponding to the target critical point. The present application is beneficial to improving the safety of the intelligent power supply.

The power supply starting circuit has the characteristics of extremely low standby power consumption, perfect circuit protection function, safe and controllable electric energy transmission, complete and reliable starting logic and the like. The invention provides a novel high-voltage auxiliary power supply starting circuit. The novel high-voltage auxiliary power supply starting circuit comprises a starting logic processing unit, a power energy storage unit and a charge release unit, the input end of the power supply starting circuit is connected with an external input voltage, a temperature detection signal and a maintaining voltage after starting, and the output end is connected with an external power supply master control circuit to provide auxiliary power supply starting energy and a protection shutdown signal. The novel high-voltage auxiliary power supply starting circuit is extremely low in standby power consumption, complete in protection function, safe, reliable and complete in starting logic. The problems that a traditional power supply starting circuit is large in standby power consumption, incomplete in protection circuit, incomplete in starting logic and the like are solved.

According to the standby power system and the starting control method thereof provided by the invention, when the grid-connected and off-grid controller is powered off, the first control circuit provides the low-level signal to the second control circuit of the inverter as the off-grid signal, so that when the voltage of the direct current side of the inverter meets the condition of the starting voltage value of the inverter, off-grid black start is preferentially carried out, and the starting time of the inverter is shortened. And after starting is completed, off-grid operation outputs alternating current voltage to quickly supply power to a standby power load. And if the inverter detects that the voltage of the alternating current side meets the condition of the minimum off-grid output voltage value and receives a high-level signal as a grid-connected signal before the inverter is started in an off-grid mode to output the alternating current voltage, the inverter can be directly switched to be started in a grid-connected mode, and rapid starting is completed. When the voltage of the power grid meets the under-voltage protection voltage value condition, the grid-connected and off-grid controller can be directly started in a grid-connected mode to run in a grid-connected mode, the first switching circuit is closed, a high-level signal is sent to serve as a grid-connected signal, power is rapidly supplied to the standby power load, and meanwhile voltage is provided for the alternating current side of the inverter.

The invention relates to a direct-current power supply protection circuit and method, and the circuit comprises an input control module which is used for achieving the adjustment of the state of the input control module according to a short-circuit input control signal, a breakdown input control signal and an undervoltage input control signal, and further controlling the connection and disconnection between a power supply and a direct-current power supply module; the output control module is used for realizing self-state adjustment according to the short-circuit output control signal, the breakdown output control signal and the under-voltage output control signal so as to control connection and disconnection between the direct-current power supply module and the load; the short-circuit monitoring module is used for outputting a short-circuit input control signal and a short-circuit output control signal; the chip breakdown monitoring module is used for outputting a breakdown input control signal and a breakdown output control signal; the output undervoltage monitoring module is used for outputting an undervoltage input control signal and an undervoltage output control signal; the safety of the power supply can be protected in time when the power supply fails.

The invention provides an intelligent voltage protection system and method based on the Internet of Things, and the method comprises the steps: carrying out the equipment action recognition according to behavior association data, and obtaining an equipment external action recognition result of target equipment; performing equipment action recognition according to the internal voltage state data to obtain an internal action recognition result of the target equipment; performing behavior consistency check according to the external action recognition result and the internal action recognition result of the equipment to obtain an external behavior consistency degree, performing dynamic behavior prediction on the target equipment according to the image sensing data and the external behavior consistency degree, and determining an equipment behavior prediction result; the equipment voltage protection threshold value is dynamically adjusted according to the behavior prediction result, intelligent voltage protection is performed on the target equipment through the equipment voltage protection threshold value, the behavior prediction of the target equipment can be performed through the image sensing data of the Internet of Things, and the voltage protection threshold value is dynamically adjusted according to the behavior prediction result. Therefore, voltage false alarm caused by frequent start and stop is avoided.

The invention provides a battery cell protection circuit, a battery protection board and a battery, and relates to the technical field of battery cell protection, the battery cell protection circuit comprises a battery cell protection chip and a switch module, the battery cell protection chip controls the switch module to be in a first state when the voltage of a battery cell is abnormal, and the switch module is in a second state when the voltage of the battery cell is abnormal. The battery cell in the battery is disconnected from the charging and discharging port through the switch module under the condition that the switch module is in the first state so as to protect the battery, and the battery cell is connected with the charging and discharging port through the switch module under the condition that the voltage of the battery cell is recovered to be normal, so that the battery is recovered to be normal; compared with the prior art that the battery is scrapped due to protective fusing of the fuse in the battery, the rejection rate of the battery is reduced.

The invention relates to the technical field of battery charging protection, and discloses a cathode N-MOS rapid turn-off circuit and a DC power supply. The cathode N-MOS rapid turn-off circuit comprises an overvoltage and undervoltage protection unit and a rapid turn-off unit. The quick turn-off unit comprises a switch tube QT3, a switch tube QT4 and a switch tube QT6; when the input voltage of the overvoltage and undervoltage protection unit exceeds the overvoltage threshold value or is smaller than the undervoltage threshold value, the switching tube QT6, the switching tube QT3 and the switching tube QT4 are all switched off or not switched on, and then the main N-MOS switching assembly is controlled to be switched off or not switched on. According to the invention, when the input voltage of the power transmission line is abnormal (overvoltage / undervoltage), the main N-MOS switch assembly can be rapidly turned off, the control logic is simple and reliable, turn-off delay basically does not exist, and the impact of transient large current on a device can be effectively inhibited.

The invention relates to a passive wireless temperature sensor circuit, which comprises a transceiving antenna, an RF-DC rectifier circuit, a temperature sensing circuit and a backscatter circuit, the RF-DC rectifier circuit receives external radio frequency energy based on the transmit-receive antenna and then outputs direct current for power supply. The temperature sensing circuit comprises a complementary absolute temperature voltage generator and a ring oscillator; the complementary absolute temperature voltage generator comprises an MOS tube and generates CTAT voltage based on temperature characteristics of the MOS tube. The ring oscillator converts the CTAT voltage into an oscillation frequency signal of the ring oscillator and then outputs a square wave frequency signal with a negative temperature coefficient; the backscattering circuit backscatters the square wave frequency signal through the transceiving antenna; the CTAT key generation circuit built by the MOS tube generates CTAT voltage, a temperature frequency conversion chain is built through the CTAT voltage and the ring oscillator, temperature information is converted into frequency information of the oscillator, the power consumption of the temperature sensing circuit can be effectively reduced, and meanwhile the voltage coefficient of the CTAT voltage is increased by combining the temperature characteristic of the MOS tube.

The invention discloses a storage battery power shortage protection circuit of an artillery power supply electrical system, which comprises a voltage sampling unit, a power shortage judgment and control unit and an electronic switch unit, and is characterized in that the voltage sampling unit is used for sampling power supply voltage of a storage battery and setting a power shortage protection point threshold value through a resistance network; a power supply sampling voltage is provided for the power shortage judgment and control unit; a comparison circuit of the power shortage judgment and control unit compares a sampled power supply voltage with an internal reference voltage, controls the on-off of a two-stage triode common emitter circuit of the post-stage driving amplification circuit through the on-off of an internal triode, and controls the power-on or power-off of a relay coil of the electronic switch unit. Therefore, the normally open contact of the relay is used as an electronic switch to realize the power distribution control of the equipment mounted on the artillery power supply system. The storage battery power shortage protection circuit provided by the invention has the characteristics of adjustable threshold value, extremely low power consumption, strong anti-interference capability and high reliability.

The utility model discloses a dual-power-supply power supply control circuit and electronic equipment. The dual-power-supply power supply control circuit comprises a frequently-used power supply, a standby power supply, a first power supply detection and control circuit, a second power supply detection and control circuit, a state detection circuit, a first switch and a second switch, the frequently-used power supply is connected with the load through the first switch. The standby power supply is connected with the load through the second switch. The first power supply detection and control circuit is respectively connected with the frequently-used power supply and the state detection circuit; the second power supply detection and control circuit is respectively connected with the standby power supply and the state detection circuit; when the voltage of the frequently-used power supply is normal, the first power detection and control circuit drives the first switch to be closed, and the frequently-used power supply supplies power to the load. When the common power supply voltage is abnormal and the standby power supply voltage is normal, the second power supply detection and control circuit drives the second switch to be closed, and the standby power supply supplies power to the load. The problems that an existing circuit design does not have the overvoltage and undervoltage protection function, and sparks are likely to be generated when different power supplies are switched are solved.

A circuit breaker protects an electric low-voltage circuit, and has: a) the function of ascertaining a level of a differential current of the low-voltage circuit, b) a mechanical separating contact unit so that an opening function of contacts is switched to prevent a current flow or a closing function of the contacts is switched for a current flow in the low-voltage circuit, and c) an electronic interruption unit which is connected to the mechanical separating contact unit in series and which, as a result of semiconductor-based switch elements, is switched to a high-ohmic state of the switch elements to prevent a current flow or a low-ohmic state of the switch elements for a current flow in the low-voltage circuit. The ascertained level of the differential current is compared with a differential current threshold and if the current threshold is exceeded, the current flow in the low-voltage circuit is prevented.

The embodiment of the invention provides a method and equipment for processing a low-voltage protection constant value in a regional power grid, and a medium. The method comprises the steps of determining a dynamic topological feature vector of power grid equipment in a preset time window, dynamic topological feature data corresponding to the dynamic topological feature vector and a contact relation matrix representing the connection tightness degree between the power grid equipment according to the connection relation and feature data of the power grid equipment in a power grid at different time points; inputting the contact relation matrix, the operation parameters in the power grid and the historical fault data into a generative adversarial network to obtain simulated fault data output by the generative adversarial network; according to the extended training data set, an initial target constant value solution set is obtained through multi-target optimization solution; the extended training data set is obtained according to the simulated fault data and the historical fault data; and performing compliance verification on the initial target constant value solution set to obtain a target constant value solution set. The method is used for improving the accuracy of obtaining the constant value, so that the operation effect of the power grid during operation is improved.

An air conditioner includes an indoor unit and an outdoor unit. The air conditioner includes a relay that is in one of a short-circuit state or a released state according to a switching signal to be supplied, a voltage detection circuit that detects a voltage, and a relay switching circuit that outputs a switching signal for causing the relay to be in the released state in a case where a value of the voltage detected by the voltage detection circuit is larger than a predetermined first threshold, to the relay. The relay, the voltage detection circuit, and the relay switching circuit are disposed in the indoor unit or the outdoor unit.

The invention relates to the technical field of photovoltaic modules, in particular to a hot spot automatic circuit breaker and a photovoltaic module with the same. The hot spot automatic circuit breaker comprises a main circuit output end M, a battery string access end N, a main circuit connection circuit, a bypass circuit, a short-circuit circuit, a voltage detection module V, a current detection module A1, a current detection module A2, a state switching module, a current comparison module, a switch S1, a switch S2 and a switch S3. According to the photovoltaic module with the hot spot automatic circuit breaker, the circuit structure is optimized, the photovoltaic cell string with the hot spot fault is bypassed and disconnected from the main circuit, the temperature rise of the hot spots is prevented, the heat of the hot spots has time to be dissipated in time, and therefore the temperature on the cell pieces can be greatly reduced when the hot spots occur; whether the hot spots are eliminated or not is detected regularly, and the main circuit is accessed in time after elimination; the preset value of the voltage V can be set so that intervention can be earlier than a bypass diode scheme when a hot spot occurs.

The utility model provides an inverter bus capacitor overvoltage and undervoltage protection circuit, and relates to the technical field of electronic circuits, a bus voltage sampling module of the technical scheme of the utility model obtains a sampling signal of bus voltage, and provides an accurate data basis for subsequent analysis. And then, the bus voltage analysis module judges the sampling signal, and compares a sampling voltage value with a preset voltage range, so that a voltage abnormal condition can be accurately identified. When a sampling voltage value exceeds a preset range, the bus voltage analysis module outputs a low-level signal, and the design enables the system to quickly respond to voltage fluctuation. And finally, when the bus overvoltage and undervoltage protection execution module receives the low-level signal, a protection measure is taken immediately, the inverter is controlled to stop working, and an alarm signal is output. The three-module linkage design improves the accuracy of voltage detection, gives consideration to the overvoltage and undervoltage conditions, and comprehensively improves the safety and reliability of the inverter.

The present application relates to a power failure detection circuit, the circuit comprises: a rectifying circuit for full-wave rectifying an alternating current voltage so as to obtain a first voltage; a switching circuit for converting the first voltage into a periodic voltage pulse; and a judgment circuit for providing an output signal to a fan control circuit for closing a fan when the periodic voltage pulse is not received within a preset time period, and providing the output signal to a micro-control unit for closing an electronic expansion valve. The present application also relates to a control circuit for a variable refrigerant flow VRF system.

A power loss protection circuit includes: a first input terminal configured to receive, as an input voltage, a voltage generated by an intermediate bus converter configured to step down a DC bus voltage; a second input terminal configured to receive the DC bus voltage; a capacitor connection terminal to which an external capacitor is to be connected; an output terminal to which a load is to be connected; a first switch connected between the first input terminal and the output terminal; a charging circuit connected between the second input terminal and the capacitor connection terminal; and an internal converter configured to step down a voltage of the capacitor connection terminal and stabilize an output voltage generated at the output terminal to a target level.

The invention discloses a DC / DC module and a vehicle. The DC / DC module comprises a power conversion circuit, an over-current protection circuit, an under-voltage protection circuit, an AND gate circuit and an anti-backflow circuit, the first input end of the overcurrent protection circuit is connected to the first end of the anti-backflow circuit, and the output end of the overcurrent protection circuit is connected to the input end of the power conversion circuit; the input end of the under-voltage protection circuit is connected to the first end of the anti-backflow circuit or the second input end of the over-current protection circuit; the first input end of the AND gate circuit is connected to the output end of the overcurrent protection circuit, the second input end of the AND gate circuit is connected to the output end of the undervoltage protection circuit, and the output end of the AND gate circuit is connected to the second end of the anti-backflow circuit; the output end of the power conversion circuit is connected to the first end of the anti-backflow circuit or the second input end of the overcurrent protection circuit. And the reliability of the anti-backflow circuit is improved.

Systems and methods described herein can involve for a selection of one or more lines in a grid to bring down, executing a load shedding optimizing process configured to determine optimal loads in the grid that can be shed while maintaining grid stability, the determination of optimal loads is based on one or more lines chosen to be brought down, load importance, and identification of loads in the grid that can be partially or completely shed; and executing a load shedding process to shed loads in the grid according to the optimal loads in the grid topology to shed.

The present invention relates to a method for checking the switch-off capability of an electronic fuse which is arranged between a voltage source and a consumer. The method includes monitoring a voltage at the consumer, switching the electronic fuse to a non-conductive state, and checking whether the voltage at the consumer drops to a threshold voltage within a set time. The present invention also relates to a system for checking the switch-off capability of an electronic fuse. The system includes a voltage source, a consumer, an electronic fuse between the voltage source and the consumer, a voltage measuring device to measure the voltage at the consumer, and a checking unit. The checking unit monitors the voltage at the consumer via the voltage measuring device, switches the electronic fuse to a non-conductive state, and checks whether the voltage at the consumer drops to a threshold voltage within a set time.

The invention discloses a full gallium nitride integrated half-bridge circuit, a chip and electronic equipment, and the circuit comprises an undervoltage and overvoltage protection circuit, an overcurrent protection circuit, a dead time generation circuit, a signal control circuit, a level shift circuit, a high-side driving circuit, a low-side driving circuit, a high-side gallium nitride transistor and a low-side gallium nitride transistor. The half-bridge circuit has the following effects: the half-bridge circuit can automatically disconnect the level shift circuits of the high-side gallium nitride transistor and the low-side gallium nitride transistor by generating an automatic locking logic signal, so that the problems of mis-opening and mis-closing of a high-side power device in a high-frequency switching signal switching process are reduced; the driving circuit adopts a bootstrap driving structure to ensure rail-to-rail output and simultaneously has low transmission delay, and in addition, the driving circuit is integrated with overvoltage, undervoltage and overcurrent protection circuits to ensure high reliability of the half-bridge circuit during working.

The utility model discloses a control circuit of a domain controller, and relates to the technical field of circuits. Comprising a voltage monitoring circuit located between the storage battery and the primary power supply. The voltage monitoring circuit comprises a first processor, a first voltage division circuit and a first switch. When the voltage of the first input end is detected to be greater than or equal to an overvoltage threshold value, or the voltage of the second input end is detected to be smaller than an undervoltage threshold value; and controlling a first output end of the first processor to output a signal for controlling the first switch to be in an off state, and controlling a third output end of the first processor to output a signal for representing that the voltage of the storage battery is in an under-voltage or over-voltage state to a system-on-chip. Under-voltage or over-voltage detection of the storage battery is achieved, and when it is detected that the storage battery is in an under-voltage or over-voltage state, the first switch is controlled to be turned off, that is, under-voltage turn-off of the power supply can reduce static power consumption of a product during under-voltage; the overvoltage turn-off power supply prevents each stage of power supply from being damaged, and the reliability of the domain controller and the product is improved.