103 results about "Mains electricity" patented technology

The application relates to an emergency brake release power supply circuit and equipment. The circuit comprises a control module, a switching component, a first power supply circuit and a second power supply circuit; the control module turns on the connection between the first power supply circuit, the second power supply circuit and the corresponding interface equipment through the switching component, so that, in the case of normal power supply, the control module controls the first power supply circuit to supply power to the equipment standby battery, and in the case of monitoring the corresponding signal, the control module controls the first power supply circuit to provide power supply for the equipment control system, and controls the second power supply circuit to supply power to the brake holding coil; in the case of abnormal power supply, if the corresponding signal is monitored, the equipment standby battery provides power supply for the equipment control system through a DC-DC converter, and the control module controls the first power supply circuit to supply power to the brake holding coil through the switching component. Thus, the application simplifies the circuit, realizes the cost reduction through the reuse and normalization of the circuit.

This invention discloses a multi-condition access, dynamic hierarchical switching, and event-related metering method and system for low-voltage emergency power supply. The method first collects data on the user-side interface residual voltage, original power supply isolation status, grounding status, emergency power supply output parameters, and load operating status, and then performs a multi-condition access determination. After successful access, a test load is connected to estimate the available power supply capacity and start-up impact margin under the current operating conditions. Next, loads to be restored are grouped according to load priority and electrical impact severity, and reserve margin verification and dynamic connection are performed for each group. After mains power is restored, loads are decoupled in reverse order and regular power supply is restored, outputting the event-related metering traceability results. This invention can improve the safety access capability, capacity utilization efficiency, and post-event traceability capability of low-voltage emergency power supply.

This application discloses an appliance power decomposition method and storage medium. The method includes: collecting the raw current signal, total active power data, actual power data of the target appliance, and electricity consumption scenario information from the user's main electricity meter; extracting frequency domain feature vectors from the raw current signal, performing one-hot encoding on the electricity consumption scenario information to obtain scenario feature vectors, and normalizing the total active power data and actual power data; constructing a neural network model including a two-layer sliding window; inputting the processed data into the neural network model for training and updating the model parameters; inputting the bus observable signal at any time into the trained neural network model, and outputting the power decomposition result of the target appliance. The advantage of this application is that it improves the accuracy of appliance power decomposition, providing accurate data support for grid energy management and electricity demand response.

The utility model relates to the field of electric power overhauls tool, especially a power supply box, the power supply box includes box, and sets up the patch panel, power supply unit and the power cable on the box, is equipped with multiple output circuits on the patch panel, and each output circuit includes the safe socket, the isolating switch and the earth leakage protector that are electrically connected in proper order, the power cable is electrically connected with the output circuit, and the power supply unit one end is electrically connected with the power cable, and the other end is electrically connected with at least one output circuit, the power supply box of the utility model provides a variety of power supply design, satisfies the power supply of municipal power and built -in power supply, provides the flexibility of power supply of power supply box.

This invention discloses a photovoltaic electric-assist bicycle, belonging to the field of electric-assist bicycles. The technical solution adopted by this invention is a photovoltaic electric-assist bicycle, including a bicycle body and further comprising: a drive unit for providing driving force to assist riding the bicycle body; and a power supply unit for providing power to the drive unit. This invention, by including a drive unit, a power supply unit, photovoltaic modules, and a constant power output regulation system, can convert solar energy into electrical energy with constant current and voltage to provide auxiliary power to the bicycle. It solves the problems of existing photovoltaic electric-assist bicycles relying on mains charging for range, unreasonable photovoltaic module layout, and unstable power output. It has the advantages of effectively extending range, reducing dependence on mains charging, and improving charging efficiency and reliability by integrating photovoltaic modules and a constant power output regulation system to convert solar energy into stable power output.

The present disclosure relates to a vehicle-mounted power supply system having a shared magnetic core, and a voltage control method, an electronic device, a readable storage medium and a program product. The vehicle-mounted power supply system having a shared magnetic core comprises: an alternating-current port, a traction battery port, at least two low-voltage direct-current ports and a standby low-voltage direct-current port which share the same magnetic core, wherein voltages output by different low-voltage direct-current ports are different, the standby low-voltage direct-current port is configured to output at least two types of voltages, and the voltages output by the at least two low-voltage direct-current ports include the at least two types of voltages; and the alternating-current port is connected to a mains supply, the traction battery port is connected to a traction battery, and the at least two low-voltage direct-current ports and the standby low-voltage direct-current port are respectively connected to electrical devices matching voltage requirements. The implementation difficulty is relatively low and the cost is relatively low.

The application discloses a light storage city power dual-mode adaptive direct-current non-driven lighting carbon efficiency system and a regulation and control method, and belongs to the technical field of direct-current non-driven lighting and hardware credible carbon metering. The system takes an integrated PCB hardware bearing architecture as a core, integrates six collaborative systems of dual-mode compatible power supply, non-driven terminal cascade, multi-link layered verification communication, hardware identity binding, progressive irreversible anti-disassembly packaging and hardware double-verification carbon efficiency accounting, and relies on hardware interlocking integrated topology at a power supply end, so that automatic switching of photovoltaic direct bypass mode and city power chopping voltage stabilizing mode at a hardware level can be realized. An ultrasonic welding, full-pouring, spring piece linkage circuit breaking structure is adopted at a metering end, and is matched with synchronous sampling of a same source hardware and one-time parameter read-only solidification. Each module is bound to form an overall linkage structure through on-board coupling wiring, electrical interlocking and loop series binding. The application claims a product structure and hardware binding method, uses a forward entity structure limitation instead of a functional description, forms double-layer barriers through wide-interval structure adaptation and narrow-interval coupling parameters, and is clear in the whole structure limitation, complete in linkage structure and sufficient in collaborative creativity. The application has high anti-invalidation and long-period barrier properties, and is suitable for all-domain direct-current non-driven lighting + carbon efficiency metering integrated scenes such as street lamps, industrial plants, parks and underground spaces.

The application belongs to the field of power distribution and is a remote local alarm and three power source undisturbed switching device. The commercial power source, standby power source and power-off alarm are electrically connected with the remote control module. The remote control module is electrically connected with the commercial power air switch, standby power air switch, power output air switch and remote local switch. The dual power source undisturbed switch is electrically connected with the commercial power air switch, standby power air switch and power output switch. The remote local switch is used for manually controlling the opening and closing of the remote control module. The remote control module is used for controlling the opening and closing of the commercial power air switch, standby power air switch and power output air switch. The standby power source includes a solar power source and a battery power source charged by the commercial power source. The solar power source and battery power source are electrically connected with the remote control module through the voltage detection module and power switching module. The dual power source undisturbed switch outputs the electric energy from the commercial power air switch or standby power air switch switched by the remote control module to the outside without disturbance through the power output air switch.

The application discloses a mine wastewater treatment equipment and a mine wastewater treatment method, which are provided with a steam power generation device, the steam power generation device generates power by using the waste heat or energy of water vapor, and then can supply power to an electric heating plate through an output circuit, the waste heat of the water vapor is fully utilized, the mains electricity of electric appliances such as the electric heating plate is saved, and production cost is reduced.

The application discloses a kind of stench detection automatic exhaust device and multi-modal intelligent ventilation control method, including the sensing module and ventilation execution host of wireless connection;There is no electrical connection between sensing module and ventilation execution host;Sensing module includes built-in gas sensor, sensing end microprocessor, sensing end wireless communication module and power supply, for collecting environmental gas concentration data and sending;Ventilation execution host includes fan module, main control unit and mains input interface;Main control unit includes main controller, communication module and motor drive circuit;Communication module is used to receive the data sent by sensing module;Main controller is used to run artificial intelligence recognition algorithm, assess odor type and intensity, and generate control instructions according to the evaluation results;Motor drive circuit drives fan module to run according to control instructions.The present application solves the problem of low response lag and energy efficiency in odor control through wireless gas sensing and multi-mode switchable ventilation control.

The application discloses a chopper AC to AC voltage converter, which comprises an AC input module, an input voltage detection circuit, a chopper switch module, a driving circuit, an AC output module, a control circuit and a power supply circuit, wherein the chopper switch module comprises a first switch tube and a second switch tube which are oppositely connected, and the chopper switch module is connected to the control circuit and the power supply circuit through the driving circuit. The first switch tube and the second switch tube are oppositely combined into a switch circuit to replace a thyristor, the first switch tube and the second switch tube are opened to output when the mains voltage is lower than a peak value of 200V, the first switch tube and the second switch tube are closed when the mains voltage is higher than the peak value of 200V, and the first switch tube and the second switch tube are opened again when the mains voltage is lower than the peak value of 200V, so that the output voltage is always lower than the peak value of 200V through the above-mentioned process, and the user's electronic and electrical products are prevented from being burnt due to the excessively high peak voltage.

The application provides a charging device recommendation method and related device, and the method comprises the following steps: receiving a charging request carrying target demand information from a client device; determining a first charging device group from a plurality of charging devices according to a target charging time and a target position indicated by the target demand information; determining a second charging device group from the first charging device group, wherein the second charging device group comprises charging devices powered by a commercial power supply and / or charging devices powered by a household storage device and having a residual power greater than a preset power; determining a charging reference fee of each charging device at the target charging time according to a reference electricity price and an additional fee of each charging device at the target charging time in the second charging device group; determining a target charging device from the second charging device group according to the charging reference fee of each charging device; and sending position information of the target charging device to the client device. The application is beneficial to improving the intelligence of charging device recommendation.

An emergency power supply capable of turning off a sensor in an emergency lighting mode is used for transmitting a current to an LED driver when mains power is cut off. The LED driver is connected to the mains power. After receiving a current input by the mains power, the LED driver converts the current into a direct current and outputs the direct current to an LED light. When the mains power is normal, the emergency power supply supplies power to the sensor. When the mains power is cut off, the emergency power supply stops supplying power to the sensor. Compared with the prior art, the emergency power supply cannot supply power to the sensor in an emergency lighting mode, and the sensor will be turned off, thus guaranteeing the safety of users in an emergency.

The invention relates to an emergency LED driver (100) for supplying an LED load (300), comprising a mains connection (101) for receiving a mains voltage; an output port (105) configured to forward a driver supply voltage based on the mains voltage to an external driver (200); an input port (107) configured to receive an LED supply voltage from the external driver (200); an LED connection (113) for connecting the LED load (300) to the emergency LED driver (100); and a load side relay (111). In a non-emergency mode, the load side relay (111) is adapted to electrically connect the LED connection (113) with the input port (107) such that the LED supply voltage received at the input port (107) is forwarded to the connected LED load (300). Upon a mains voltage failure, the load side relay (111) is configured to maintain the connection between the LED connection (113) and the input port (107) for a predetermined delay time and, after the delay time has passed, to disconnect the input port (107) from the LED connection (113) and to switch the voltage supply of the LED load (300) to a battery (110).

The utility model relates to dish heat preservation technical field, especially a kind of heat preservation device, including at least two heat preservation plates;And, the power cord of connecting at least two the heat preservation plate;At least two output ports are formed on the power cord, and the input port of being connected with commercial power;At least two the output port is respectively electrically connected with the heat preservation plate.The utility model proposes to solve the problem that if there are usually multiple heat preservation plates when existing dish heat preservation, need to be set equal to the number of heat preservation plate Power cord for power supply, leading to the power connection structure is more complex, and more power supply interface is occupied.

A charging control system for a charging pile includes a utility power supply, an inverter, and a charging pile. In a green power mode, the charging pile charges a device to be charged using power generated by a photovoltaic system, and adjusts a charging current based on a current at a grid-connected port of the inverter until a power at the grid-connected port reaches zero. In an economy mode, the charging pile purchases electricity from the utility power supply for supplementation when power generated by the photovoltaic system is insufficient, and performs charging using a preset charging current; and when power generated by the photovoltaic system is sufficient, adjusts the charging current based on the current at the grid-connected port until the power at the grid-connected port reaches zero. Problems that a charging pile relies on a utility power supply directly and fails to effectively use renewable energy are resolved.

The utility model relates to a kind of charging box, charging box assembly and unmanned aerial vehicle system, including box, first electric connector, second electric connector and third electric connector are provided on the box;The first electric connector is used to be electrically connected to commercial power;The second electric connector is used to be electrically connected battery, the second electric connector is electrically connected to the first electric connector, to allow the commercial power to charge the battery through the box;The third electric connector is used to be electrically connected load, the third electric connector is electrically connected to the second electric connector, to allow the battery to power the load through the box, the first electric connector is electrically connected to the third electric connector, to allow the commercial power to power the load through the box.

The utility model relates to a shell access live line protection circuit through AC sampling and auxiliary voltage comparison, include: alternating current wiring terminal, its access the alternating current single -phase commercial power, or, alternating current two -phase double -fire line commercial power, or, alternating current three -phase three -fire line commercial power, bridge rectifier circuit, crystal oscillator Y1, inductance coil T1A and relay KJ, and the pin of relay KJ accesses the shell, and the shell is not electrified through the control of relay. The utility model discloses when the customer terminal ground wire access live line, through the protection circuit control relay (normally open) disconnect the connection between the earth and the shell, eliminates the harm of shell electrification to human body.

This utility model relates to the field of active power filter technology and provides an active power filter device, comprising: a current transformer connected between the mains power supply and the load for acquiring three-phase current signals; an active power filter whose input terminal is connected between the mains power supply and the current transformer, and whose current transformer interface is connected to the current transformer; the active power filter includes a control board and a display module; the control board is connected to the input terminal and is used to acquire the three-phase voltage signal of the power grid through the input terminal, acquire the three-phase current signal through the current transformer interface, and generate a connection anomaly detection signal for the current transformer based on the three-phase voltage signal and the three-phase current signal, and send a flag bit signal corresponding to the connection anomaly detection signal to the display module. This solves the problem of quickly and accurately providing a connection anomaly detection signal for the external current transformer of the active power filter.

This invention discloses a power adapter, controller, electric valve device, and irrigation and fertilization system. The adapter housing is suitable for installation in the power supply mounting cavity. The power adapter includes an adapter unit comprising a circuit board, a connector, a first electrode plate, and a second electrode plate. The circuit board is installed inside the adapter housing. The connector, the first electrode plate, and the second electrode plate are electrically connected to the circuit board. Of the first and second electrode plates, one is adapted to contact the positive terminal of the controller, and the other is adapted to contact the negative terminal of the controller. The connector is adapted to interface with an external power source. Based on this solution, the power adapter can directly utilize mains power or photovoltaic panel power, enabling unlimited cycle operation and completely overcoming the problems of poor battery life and high maintenance costs.

The application discloses a lamp wall control circuit, which comprises a wall control switch K1, a wall control module and a carrier wave modulation module arranged on a wall control panel, a main control chip U1, a load power supply and a driving module arranged on a main control panel, and a commercial power L which is electrically connected with the carrier wave modulation module through the wall control switch K1. The wall control module outputs a carrier wave signal to the carrier wave modulation module, and the carrier wave modulation module is used for modulating the carrier wave signal into a control signal. The commercial power L line supplies power to the load power supply through the carrier wave modulation module, and the control signal is transmitted to the main control chip U1 through the load power supply which is carried on the commercial power L line. The main control chip U1 controls the driving module to work to drive the load according to the control signal.

This application provides a startup control method, system, and power supply equipment for a voltage conversion circuit, relating to the field of circuit control technology. The method includes: acquiring a loop enable signal and power supply status information from the previous control cycle; when the loop enable signal is valid, determining whether the current bus energy meets the fast / slow start requirements based on the power supply status information or the detected bus voltage; if the current bus energy meets the fast / slow start requirements, controlling the voltage conversion circuit to start fast / slowly; if the current bus energy does not meet the fast / slow start requirements, controlling the voltage conversion circuit to start slowly. This application resolves the contradiction between the need for rapid switching response between mains power and battery power and preventing overcurrent protection triggered by bus capacitor surges, thus improving the reliability and stability of UPS system control.

This utility model relates to an LED driving device in conjunction with an emergency module, comprising a driving module and an emergency module. The driving module includes a first light source circuit, a second light source circuit, a first plug-in part, an opening and closing valve, and a power supply circuit powered by mains electricity. The opening and closing valve has a conducting state that connects the power supply circuit and the first light source circuit, and a blocking state that disconnects the power supply circuit from the first light source circuit. The emergency module includes a battery module, a second plug-in part, and a pusher. When the driving module is used alone, the opening and closing valve is in the conducting state, and the power supply provides power to the light source. When the emergency module is connected to the driving module, the pusher drives the opening and closing valve to switch from the conducting state to the blocking state, disconnecting the power supply circuit from the first light source circuit. The first plug-in part and the second plug-in part are plugged in to electrically connect the second light source circuit to the battery module, and the battery provides power to the light source. This solution achieves both power circuit disconnection and emergency circuit connection with a single plug-in action, resulting in a clever structure and ease of use.

The utility model discloses a kind of field water taking irrigation control cabinet, it is related to agricultural automation and intelligent irrigation technical field, including control cabinet body and control system, the control system includes the intelligent perception part for collecting data, the intelligent decision system of analyzing data, realizes the executing mechanism of water delivery, remote control and communication part and auxiliary power supply system of remote control can be remotely controlled;Beneficial effect is in that: intelligent perception part collects many aspects data, is analyzed and handled by intelligent decision system, executing mechanism realizes accurate irrigation, avoid water resource waste, guarantee crop growth, improve yield and quality;User can be remotely controlled by mobile terminal with the aid of intelligent irrigation control cloud platform, break through space-time limit, save manpower cost;Auxiliary power supply system utilizes solar photovoltaic panel and lithium battery, reduce dependence on mains electricity, reduce carbon emission, energy saving and environmental protection, applicable to remote farmland area.

This invention discloses a non-intrusive load monitoring method and system with load back injection guided by switch status, relating to the field of power load monitoring technology. The method includes: acquiring the aggregated power time series and corresponding timestamp discrete sequences of a household's main electricity meter; inputting the aggregated power time series and timestamp discrete sequences into a non-intrusive load monitoring model; extracting time phase channel data, load context, and switch probability sequences through a multi-scale feature extraction module; concatenating these sequences and then extracting multi-time-scale morphological features; performing deep encoding on the extracted features through a dual-gated backflow module and outputting a normalized domain power estimate and a switch probability value; correcting the normalized domain power estimate using the switch probability value to obtain a corrected power value; and mapping the corrected power value from the normalized domain to the true power domain through a context backflow module to obtain the final power monitoring value. This invention enables accurate and coordinated discrimination of the switch status and power of various household appliances.

A method and apparatus for energy allocation in a photovoltaic-thermal co-driven direct-drive air conditioner. The method involves: acquiring stored heat and generating an operating mode determination result; supplying heat to the indoor unit of the photovoltaic direct-drive air conditioner via an intelligent buffer water tank if thermally driven; driving the photovoltaic direct-drive air conditioner via electrical energy if power is insufficient; determining the power balance state; charging the battery energy storage device when there is power surplus, and converting the remaining surplus DC power into heat energy stored in the intelligent buffer water tank after the battery energy storage device reaches a full charge threshold; releasing supplementary electrical energy to the DC bus when there is power deficit, and rectifying the AC power from the mains network and connecting it to the DC bus when the battery energy storage device's state of charge is below the discharge threshold. Implementing the technical solution provided in this application solves the problem of independent and conflicting use of the two energy sources in the prior art, improving the overall comprehensive utilization efficiency of solar energy.

This utility model discloses a novel wireless transmitter source switching system, comprising a loop control module, a signal output module, a signal detection module, a working indicator module, and a signal input module. The signal output module, signal detection module, working indicator module, and signal input module are electrically connected to the loop control module. A power control module is electrically connected to each of the loop control module, signal output module, signal detection module, and working indicator module, and is powered by AC mains electricity. This utility model relates to the field of automatic source switching for wireless broadcast transmitters, specifically a novel wireless transmitter source switching system.

The utility model discloses a lightning -resistant circuit, including rectifier bridge BD1, the input of rectifier bridge BD1 connects the live wire L and zero line N of commercial power, and the live wire L and zero line N between being connected with pressure -sensitive resistance MOV1, and the live wire L has the fuse F1 in series, and rectifier bridge BD1 and commercial power between having common mode inductance LF1 and common mode inductance LF2 in series, and common mode inductance LF1 and common mode inductance LF2 between being connected with capacitor CX1 and thermistor NTC4. When lightning voltage enters from the live wire L and zero line N, first, after absorbing through pressure -sensitive resistance MOV1, then, through the high impedance structure that is formed by common mode inductance LF1 and common mode inductance LF2 in series, make the lightning surge current of whole circuit greatly reduce, reduced the influence of lightning to the post stage circuit.

The utility model discloses a three cabin formula sodium salt solid state energy storage cabin, including integrated cabin body, the inside integrated cabin body is divided into three independent battery cabin, electrical cabin and control cabin through physical partition, be provided with a plurality of sodium salt solid state battery package in battery cabin, and each sodium salt solid state battery package corresponds to connect a battery management system, still be provided with the cut -off mechanism that links and opens with battery cabin door in battery cabin, be provided with energy storage converter, total power circuit breaker and busbar in electrical cabin, a plurality of sodium salt solid state battery package are connected with the direct current side of energy storage converter through busbar, and the alternating current side of energy storage converter is used for connecting power grid or load, and total power circuit breaker is connected in the circuit as primary protection, be provided with energy management system and uninterrupted power supply in control cabin, and energy management system is connected with battery management system and energy storage converter communication respectively, and uninterrupted power supply is electrically connected with energy management system and the core control equipment in control cabin respectively, is used for maintaining power supply when main electricity interruption.

A refrigeration apparatus includes a housing, a refrigerant circuit, a utilization power source, a ground line, and a grounding resistor. The refrigerant circuit circulates a refrigerant that is subject to potential disproportionation reaction. The utilization power source receives electrical power from a commercial power source. The ground line electrically connects the housing to an external ground. The grounding resistor is electrically connected to the ground line, and has a resistance equal to or more than 0.1Ω.