12results about How to "Reduce conversion loss" patented technology

The invention discloses a high-luminous-efficiency LED lighting device and a manufacturing method thereof, and relates to the technical field of lighting, the high-luminous-efficiency LED lighting device comprises a shell, a heat dissipation module used for avoiding light attenuation acceleration is arranged in the shell, the heat dissipation module comprises a ceramic heat dissipation plate and an aluminum substrate which are arranged in the shell, and concave-convex textures are arranged on the heat dissipation surface of the ceramic heat dissipation plate; the aluminum substrate is provided with a multi-channel assembly used for preventing the overall lighting effect from being reduced, and the opening of the shell is provided with an anti-glare assembly used for restraining glare under low light loss. Convection heat transfer is enhanced through concave-convex textures on the surface of the ceramic heat dissipation plate so as to delay light attenuation, the multi-channel assembly independently adjusts driving current through a power management system so as to achieve spectrum refined reconstruction, and the anti-dazzle assembly achieves dazzle suppression under low light loss through microstructure textures on the light-emitting face of a lens and light diffusion particles filled in the center area.

The invention relates to a high-voltage induction heating molten salt system and method for energy storage, and relates to the technical field of heat energy storage, and the system comprises a salt storage tank, an induction heating device, a high-voltage power supply module, a circulating pump and a control system. The induction heating device is arranged on a circulating pipeline inside or outside the salt storage tank, and the high-voltage power supply module is electrically connected with the induction heating device and used for providing high-voltage high-frequency alternating current; the circulating pump is used for driving molten salt to circulate in the system; the control system is connected with the high-voltage power supply module and the circulating pump to adjust heating power and flow velocity. Power is directly supplied to the induction heating device through the high-voltage power supply module, eddy heat is generated in the fused salt or the heating body according to the electromagnetic induction principle, the problems of scaling and local overheating of a traditional resistance heater are solved, high-power and high-efficiency fused salt heating can be achieved, the heat conversion efficiency and operation stability of an energy storage system are improved, and the energy storage system is suitable for large-scale popularization and application. The method is suitable for large-scale wind-light-electricity consumption and industrial heat supply energy storage scenes.

The invention relates to a low-power-consumption direct-current step-down circuit, which comprises a depletion type N-channel field-effect transistor, a voltage stabilizing diode, a first resistor, a second resistor and an output terminal, and is characterized in that the drain electrode of the depletion type N-channel field-effect transistor is connected to an input power supply, the grid electrode is connected to the first end of the second resistor, and the source electrode is connected to the first end of the first resistor; the positive electrode of the voltage stabilizing diode is connected to the second end of the second resistor and the second end of the first resistor, the negative electrode is grounded, and the first end of the first resistor is further connected to the output terminal. Compared with the prior art, the voltage of the output terminal can be consistent with the actual voltage of the input power supply in the process of the rising section of the input power supply, the voltage of the output terminal is kept as the target voltage after the voltage exceeds a certain value, and the whole circuit has low power consumption.

The application belongs to the technical field of underwater equipment and artificial intelligence, and discloses a kind of intelligent underwater submersible heat charging method, to solve the problems of low charging efficiency, underwater navigation difficulty and insufficient safety guarantee of existing underwater submersible. The method is long-distance positioning to underwater heat source and underwater volcano through GPS signal when sailing on water surface, mid-distance positioning is carried out through inertial navigation, sonar signal and charging capacity of thermal power generation plate during diving process, precise short-distance positioning is carried out through ultra-short baseline positioning system, inertial navigation system, doppler sonar speed measurement system and charging capacity of thermal power generation plate at the position of underwater heat source and underwater volcano during slow sailing charging process, the optimal path of obstacle avoidance energy consumption is planned based on cost function, and the thermal power generation plate converts the thermal energy of underwater heat source into electric energy to charge the battery. The application realizes accurate perception of underwater thermal environment, significantly improves underwater navigation efficiency and charging safety, and prolongs the endurance time of submersible.

The invention discloses a silicon smelting flue gas recycling system and method, and relates to the technical field of waste heat recovery. The silicon smelting flue gas recycling system comprises a waste heat boiler, a flue gas cleaning unit, a heat exchanger, a dust removal fan, a power generation unit, a carbon dioxide trapping unit and a boiler water feeding pump, the silicon submerged arc furnace is connected with the waste heat boiler through a pipeline, the waste heat boiler is connected with the power generation unit and the flue gas cleaning unit through pipelines, the flue gas cleaning unit is connected with the carbon dioxide capturing unit through a pipeline, and a heat exchanger is arranged between the flue gas cleaning unit and the carbon dioxide capturing unit. A dust removal fan is arranged between the heat exchanger and the carbon dioxide capturing unit, the boiler feed pump is connected with the heat exchanger through a pipeline, the heat exchanger is further connected with the waste heat boiler through a pipeline, and the dust removal fan is connected with the power generation unit; the power generation unit comprises a steam turbine, a generator and a transmission control unit, and the steam turbine, the generator and the dust removal fan are coaxially arranged through the transmission control unit.

The invention provides a water-based sodium ion battery. According to the water-based sodium ion battery, the positive tabs are arranged on the two sides of the positive pole piece, the negative tabs are arranged on the two sides of the negative pole piece, the tabs are arranged at the two ends of the positive pole piece and the two ends of the negative pole piece, two adjacent battery cell groups are connected in series through the tabs, the current transmission distance can be reduced, the internal resistance of the battery is effectively reduced, and therefore the current transmission efficiency is improved; the uniform distribution of current can be realized, and the risk of local overheating is reduced; the tabs are arranged at the two ends of the positive pole piece and the negative pole piece, so that the size of the battery cell can be enlarged on the premise that the power performance is not sacrificed, the battery cell has remarkable significance in improving the energy density and the endurance mileage of the battery, the battery cell is allowed to be matched with a battery management system for use, finer charge and discharge control is realized, and the service life of the battery cell is prolonged. Therefore, the service life and the overall performance of the battery are optimized.

This invention discloses a combined solar power generation and gravity energy storage power supply system and method. The power supply system includes a solar power generation system, a gravity energy storage system, and an intelligent control system. The intelligent control system presets a power generation threshold and dynamically controls the gravity energy storage system to store or release energy based on the difference between the real-time solar power generation and the threshold, thus stabilizing the combined output power. The gravity energy storage unit adopts a symmetrical double-sloped support tower and a dual energy storage structure design, achieving bidirectional conversion between electrical energy and gravitational potential energy through a clutch mechanism. The intelligent control unit dynamically adjusts the floating threshold based on predicted wind speed and historical power fluctuation rate, improving the system's adaptability to different wind fields. The coordinated control of power generation and energy storage solves the intermittency problem of wind power generation, reduces the amplitude of output power fluctuations, and the bidirectional energy conversion mechanism can achieve peak shaving and valley filling, releasing energy to supply power during peak electricity demand and storing energy during off-peak times, improving the overall energy efficiency of the power grid and avoiding energy waste.

The application provides a comprehensive energy system regulation method and system considering traffic logistics facilities, and belongs to the technical field of comprehensive energy system regulation. The method comprises the following steps: encoding the driving and charging states of an electric truck, setting minimum duration constraints and state mutual exclusion constraints of the driving state and the charging state based on the encoding result to determine the working state of the electric truck, determining the actual power consumption of the electric truck to construct an average field game theory model, converting the theoretical model into a neural network parameterized representation of a federal learning algorithm, determining global model parameters through local training and parameter aggregation, training an electric truck distributed collaborative scheduling model based on federal average field game through a deep average field Actor-Critic algorithm; inputting real-time state observation data into the model to generate optimal scheduling decisions, including optimal route selection and optimal charging power. The application improves the real-time performance, accuracy and efficiency of comprehensive energy system scheduling.

The utility model relates to a photovoltaic power generation heating system suitable for a fire pump station in a cold region, which generates power through a roof photovoltaic array and is combined with a direct-current electric heating film for heating and freezing prevention of a pump room and a fire pool. The system integrates an intelligent temperature control unit, an energy storage unit and a flexible electrothermal film design, so that high efficiency, energy conservation, low maintenance cost and high environmental adaptability are realized, and the low-carbon operation requirement of fire-fighting equipment in cold regions is met.

The present invention belongs to the field of electronic control technology for fuel cell buses, and provides a bus energy management method and system that considers the rationality of power and charging current. According to different states of charge of power batteries, different reasonable powers are determined to be emitted by the fuel cell system; the power battery SOC is controlled to be maintained at a higher point and maintained in a small range of fluctuations near the higher point by considering the reasonable power point of the fuel cell; the electricity emitted by the fuel cell system is directly used for driving the whole vehicle, avoiding the problem of excessive power battery SOC and frequent shutdown of the fuel cell system, and improving the economy of the whole vehicle and the life of the fuel cell system. At the same time, when the whole vehicle brakes and recovers energy, the charging current is controlled to be always less than the charging current allowed by the power battery by considering the operating power of the fuel cell system, so as to promote the optimal energy recovery of the power battery, and prevent the overcharging of the power battery during the braking process of the whole vehicle, thereby improving the service life of the power battery.

The application discloses a kind of energy recovery and redistribution control method, device and system for multi-channel charge-discharge equipment, method includes: the current recoverable total power of each discharge channel in the pre-divided discharge source channel set is calculated, and the current charging demand total power of each charging channel in the pre-divided charging load channel set;Current recoverable total power, current charging demand total power, energy storage available charge-discharge power, AC / DC alternating side power, preset bus voltage constraint and preset process constraint are uniformly mapped into virtual energy pool;According to virtual energy pool, energy generated by discharge channel is distributed to charging channel on common DC bus side according to preset priority;According to energy distribution result, the power control instruction corresponding to each hardware structure is generated;According to common DC bus voltage and preset voltage interval, each power control instruction is corrected;Update energy distribution result, when system anomaly occurs, execute preset protection strategy.

This application relates to a passive e-ink screen driving circuit and display device. The passive e-ink screen driving circuit supplies power to the source / gate driving circuit and logic circuit of the e-ink screen. The passive e-ink screen driving circuit includes an antenna circuit, an NFC signal power extraction circuit, an energy storage circuit, a transformer circuit, and an NFC communication circuit. The NFC signal power extraction circuit acquires a first electrical energy; the energy storage circuit stores the first electrical energy; the transformer circuit transforms the voltage and supplies power to the source / gate driving circuit; and the NFC communication circuit acquires a second electrical energy and supplies power to the logic circuit. The circuit of this application can provide high-voltage power to the source / gate driving circuit and low-voltage power to the logic circuit. Furthermore, it directly supplies power to the logic circuit using the NFC communication circuit. Simultaneously, the transformer circuit only needs to perform one voltage transformation to meet the high-voltage requirements of the source / gate driving circuit. Compared to traditional driving circuits, this reduces power conversion losses and improves power utilization.