41results about How to "Reduce power waste" patented technology

The invention provides an electric control box remote data acquisition system based on the Internet of Things, and relates to the technical field of data processing, and the method comprises the steps: obtaining the operation state data of an electric control box through a sensor, transmitting the operation state data through a wireless signal network, obtaining a data frame set, analyzing the data identifier of each data frame, verifying the integrity of the data, and obtaining the data frame set; determining performance parameters of the wireless signal network, detecting whether an abnormal change occurs in the transmission process, generating a solution when the abnormal change occurs, generating a retransmission signal when packet loss occurs in the transmission process, determining a retransmission queue according to the data identifier, and transmitting the retransmission signal according to the retransmission queue when delay occurs in the transmission process. The priority of a retransmission queue and the distribution of network bandwidth are dynamically adjusted, and when signal attenuation occurs in the transmission process, the execution sequence is adjusted according to the operation record and result of a solution by switching a transmission channel and adjusting transmission power. The transmission process of the operation data of the electric control box can be detected.

The invention discloses an intelligent distributed photovoltaic power station optimal scheduling and operation and maintenance management method and system, and relates to the technical field of optimal scheduling. Historical power generation data, real-time meteorological data and future weather forecast of a photovoltaic power station are acquired; according to the historical power generation data, the real-time meteorological data and the future weather forecast, inputting the historical power generation data, the real-time meteorological data and the future weather forecast into a pre-trained power generation prediction model to obtain a photovoltaic power generation prediction value in a future time period; and obtaining the power grid demand power of the photovoltaic power station, and planning the charging and discharging strategy of the energy storage system according to the absolute value of the difference between the power grid demand power and the photovoltaic power generation prediction value. The difference between the power grid demand power and the photovoltaic generating capacity prediction value is analyzed, the output power of the photovoltaic power station and the charging and discharging mode of the energy storage system are adjusted according to the difference, the completion degree of the charging and discharging strategy is judged through the charging and discharging time of the energy storage system, the adjusting function of the energy storage system is fully played, and the energy storage efficiency is improved. And the reliability and continuity of power supply are improved.

The invention discloses a control method of a multi-path power supply output control system of an edge calculation type UPS, and relates to the field of intelligent control, and the method comprises the steps: controlling a monitoring unit to monitor the real-time power supply input parameters of a line and the real-time load information corresponding to different output paths in real time; controlling an input prediction model in the edge calculation unit to obtain a line prediction power input parameter according to the line real-time power input parameter and the line historical power input parameter; controlling a load prediction model in the edge calculation unit to obtain predicted load information according to the real-time load information and the historical load information; controlling the working state of the standby power supply based on the predicted power supply input parameter; and controlling the output power of different output ports of the multi-path power supply output unit based on the predicted load information and the load priority information.

The invention discloses an old community photovoltaic building integrated reconstruction design method, and particularly relates to the technical field of building reconstruction design, and the method comprises the following steps: firstly, obtaining the three-dimensional structure data of a building through scanning equipment, and determining a suitable photovoltaic installation region based on a preset reconstruction region grade; calculating the bearing capacity of the photovoltaic module according to the transformation area, determining the total weight of the bearable photovoltaic module, and designing the initial distribution of the module; an inclination angle and an azimuth angle of a photovoltaic module are optimized through sunlight analysis, after installation is completed, an inverter is used for converting direct current into alternating current, the alternating current is connected to an intelligent power grid system, finally operation data are collected regularly, and a neural network is used for predicting faults and evaluating a health state. According to the invention, a feasible scheme is provided for large-scale popularization of renewable energy sources, the installation of the photovoltaic system can make full use of the idle space of old buildings, the utilization efficiency of solar energy resources is improved, the dependence on traditional energy sources is reduced, and the energy consumption of old communities is reduced.

The invention belongs to the technical field of automobiles, and particularly discloses an automobile steering torque control method which comprises the following steps: acquiring a vehicle state, and acquiring a steering wheel steering angular rate, a steering wheel steering angle, a vehicle speed and a conventional required torque of a vehicle when determining that the vehicle is in a preset steering working condition based on the vehicle state, according to the steering angle of the steering wheel and the vehicle speed, first correction is carried out on the conventional demand torque to obtain first correction torque, according to the steering angle rate of the steering wheel and the vehicle speed, second correction is carried out on the conventional demand torque to obtain second correction torque, and based on the first correction torque and the second correction torque, the first correction torque and the second correction torque are obtained. And when the third correction torque is within the preset safety torque range, the third correction torque is optimized according to the preset comfort constraint condition, and the steering control correction torque is obtained, so that the vehicle steers based on the steering control correction torque. According to the method, the steering angle and the steering angle rate of the steering wheel are dynamically recognized in real time, the torque is accurately corrected according to the vehicle speed, the stability of the vehicle in the steering process can be remarkably improved, the dynamic adjustment can ensure that the vehicle can keep a stable driving state at various speeds and steering angles, and the driving stability of the vehicle is improved. Therefore, the driving safety and comfort are improved.

The invention discloses a method of an elevator energy consumption optimization control system, which relates to the technical field of elevator energy consumption optimization, and comprises the following steps: in the elevator running process, acquiring elevator running information of a floor planned to stop in the running process in real time, and preprocessing the acquired elevator running data to obtain a pre-processed elevator running data; and a basis is provided for analyzing the use mode and the operation efficiency of the elevator. According to the invention, through intelligent division of near-distance stopping, middle-distance stopping and long-distance stopping, the elevator system realizes fine speed and acceleration adjustment aiming at different running distances, energy consumption and transportation efficiency are effectively balanced, and the power peak demand and electric power waste are reduced. The instantaneous current impact is reduced by short-distance stopping, and the mechanical wear is relieved; and the acceleration is optimized by long-distance parking, so that excessive consumption under high load is prevented, and the temperature rise of the equipment is avoided. On the whole, intelligent control reduces equipment aging and heat dissipation requirements, the service life of the elevator is remarkably prolonged, and the long-term maintenance cost is reduced.

The invention discloses a self-starting 9-shaped cavity laser and device based on motor disturbance, and relates to the technical field of lasers. The laser comprises a nonlinear amplification loop, a linear arm, a polarization maintaining optical fiber coupler and a motor disturbance module. And the polarization-maintaining optical fiber coupler is connected with the linear arm and the nonlinear amplification loop respectively. High-frequency mechanical vibration is applied to the polarization-maintaining passive optical fiber in the nonlinear amplification loop through the motor disturbance module, so that a high-strength initial noise signal is formed in the cavity, mode competition in the cavity is promoted, and noise is accelerated to enter a positive feedback area of the resonant cavity. Mode locking self-starting under the low pumping condition is achieved, pumping power waste is reduced, and the device cost is reduced.

The utility model provides a hybrid power system, a four-wheel-drive hybrid power system and a vehicle, and relates to the technical field of automobile parts. The hybrid power system comprises a first motor, a battery electrically connected with the first motor, an engine, a first synchronizer, a second synchronizer and a first differential mechanism. The first motor comprises a first motor shaft and a first motor gear arranged on the first motor shaft in series. The engine comprises an engine output shaft; the first motor shaft and the engine output shaft are coaxially arranged, and the first motor shaft is in power coupling or power separation with the engine output shaft through the first synchronizer; the first motor gear is in power coupling or power separation with the first differential mechanism through the second synchronizer. Power coupling or power separation between different structures is achieved through the first synchronizer and the second synchronizer, power requirements under different working conditions are met, meanwhile, the advantages of being simple in structure, small in size and weight, low in transmission loss and the like are achieved, and the efficiency of a hybrid power system can be improved.

The invention provides a distributed new energy consumption control method and device. The method comprises the following steps: acquiring a double-layer master-slave game model; the double-layer master-slave game model comprises an upper-layer game model taking a micro-grid group as a main body and a plurality of micro-grids as slave bodies; a lower-layer game model taking the power distribution network as a main body and the micro-grid group and the shared energy storage operator as slave bodies; inputting the load power data and the new energy power generation power data of the plurality of microgrids into an upper layer game model, and outputting an upper layer game result; inputting the upper-layer game result, the capacity of the shared energy storage operator, the lease cost and the load power data of the power distribution network into a lower-layer game model, and outputting a lower-layer game result; the lower-layer game result comprises the optimal time-sharing purchase and sale electricity price of the power distribution network and the optimal interaction power of the power distribution network, the shared energy storage operator and the microgrid group corresponding to each time period. According to the invention, ordered power interaction between the plurality of microgrids and the power distribution network can be realized.

The invention discloses a tilting type electric vertical take-off and landing aircraft with foldable airfoils and an operation method. Comprising a fuselage, a fixed section wing arranged on the fuselage, a folding section wing connected to the fixed section wing through a wing folding assembly, a vertical fin arranged at the tail of the fuselage, a fixed section horizontal tail arranged on the vertical fin and a folding section horizontal tail connected to the fixed section horizontal tail through a horizontal tail folding assembly. The conversion of the aircraft among a folding mode, a helicopter mode and a fixed-wing aircraft mode can be realized under the action of the wing folding assembly and the horizontal tail folding assembly, a front-end rotor wing is arranged on the fixed-section wing, a middle-end rotor wing is arranged on the folding-section wing, and a rear-end rotor wing is arranged on the folding-section horizontal tail. When the aircraft is parked on the ground, the folding section wings and the folding section horizontal tail can be folded, so that the parking space needed by the aircraft is reduced, the requirement for special infrastructures is lowered, the cost is saved, the aircraft can be more easily integrated into the current limited space of a city, and the operation flexibility is enhanced.

The invention relates to the technical field of electric power regulation and control, in particular to an electric power regulation and control method and system based on a power characteristic matrix. The method comprises the following steps: obtaining distributed power plant equipment data, carrying out abnormal value replacement, generating complete equipment data, screening out standard operation parameters, carrying out equipment unit simulation processing, generating a simulation power plant equipment unit, and carrying out combined power generation simulation to obtain various simulation data; historical power output data are obtained, power demand analysis is carried out, power output data and power demand peak and valley data required by prediction are generated, based on the data, intensity adaptation screening is carried out on combined power generation simulation, an operation period is adjusted, and finally a distributed equipment scheduling instruction is generated, so that efficient regulation and control of the intelligent virtual power plant are realized. According to the invention, a more efficient and more reliable intelligent power regulation and control method is realized.

The invention belongs to the technical field of spiral conveyors, and discloses a spiral conveyor which comprises a support and a conveying barrel, a gland and a gear box are installed at one end of the conveying barrel, a motor is installed at one end of the gear box, a main shaft is rotatably installed on the inner wall of the conveying barrel and the inner wall of the gear box, a first spiral piece is welded to the outer surface of the main shaft, and a second spiral piece is welded to the outer surface of the main shaft. The main shaft is driven by a motor, a feeding port and a discharging port are formed in the surface of the conveying cylinder, a replacement cylinder is rotationally installed in the middle of the inner wall of the conveying cylinder, and the outer surface of the replacement cylinder is movably sleeved with a buffering sleeve. When the first spiral piece rotates to convey materials, the speed difference generated between the first spiral piece and the replacement barrel can reduce the relative speed between the first spiral piece and the replacement barrel on the premise of not influencing material conveying of the first spiral piece, so that the abrasion degree between the replacement barrel and the first spiral piece is obviously reduced, and the service life of the device is prolonged.

The invention discloses a roadway tunneling and conveying all-in-one machine with impact cutting teeth for assisting rock breaking. The roadway tunneling and conveying all-in-one machine comprises a walking mechanism, a main machine body, a material conveying mechanism, a material receiving mechanism, a multi-dimensional adjusting mechanism, a rotary driving mechanism and a cutting head mechanism. Cutting tooth units distributed along a spiral track are arranged on the surface of the cutting head mechanism, energy storage rebound mechanisms are arranged in the cutting tooth units, impact inertia kinetic energy is stored and released through multi-layer irregular arrangement of balls, secondary rock breaking is achieved, and the cutting efficiency and the hard rock adaptability are improved. The multi-dimensional adjusting mechanism expands the operation range through cooperation of a rotating base, a hydraulic cylinder and a hydraulic telescopic rod. The material receiving mechanism comprises an angle-adjustable material containing plate and symmetrically-arranged material sweeping wheels, the material sweeping wheels buffer a material pushing plate through springs to avoid collision damage, and an auxiliary feeding mechanism is arranged to enhance the material conveying continuity. Impact kinetic energy is recycled, the cutting range is flexible and adjustable, efficient collection and conveying of materials are integrated, and the device is suitable for high-hardness rock stratum roadway tunneling.

The invention relates to the technical field of electric power marketing early warning data analysis, and particularly discloses an early warning method and system of an electric power marketing system based on artificial intelligence. Reference data basis is provided for power utilization early warning of power demand equipment, the power operation efficiency is improved, the power demand operation cost is reduced, meanwhile, potential faults and abnormalities can be found in time by monitoring the power supply equipment, an electric power early warning mechanism carries out early warning reminding in time, and the power utilization early warning efficiency is improved. An alarm is provided before a potential problem becomes an actual problem, thereby reducing accidental power failure caused by insufficient power supply, and improving the supply efficiency of power supply equipment.

The invention relates to the technical field of solar street lamp control power distribution, in particular to an urban road solar street lamp control power distribution system which comprises a global power distribution strategy unit, an independent power distribution strategy unit and a storage battery protection unit. When the global power distribution strategy unit is in the first illumination demand mode, coordinating the electrical load in the area, then collecting environmental data, predicting future illumination change in combination with historical environmental data and brightness records, calculating a dimming demand and generating a global power distribution strategy; when the independent power distribution strategy unit is in the second lighting demand mode, the independent power distribution strategy is generated by detecting the speed and direction of the vehicle and the pedestrian and combining the dimming safety step length to determine the position of the pre-adjusted street lamp; the storage battery protection unit generates a health prediction curve by diagnosing the health state of the battery, and formulates a battery pack load dispersion strategy in combination with the current load demand. By optimizing a power distribution strategy and battery management, power consumption is reduced, and the service life of the solar street lamp system is prolonged.

The invention discloses a method and a device for calculating the lighting rate of a street lamp, which ensure that the calculation result of the lighting rate is more accurate by collecting the real-time electrical parameter data of a loop and a single lamp and comprehensively considering the line loss in the loop, an external load and the lighting condition of an off-line lamp. Meanwhile, even if part of the single lamp controllers are offline, the lighting state of the off-line lamp can still be deduced through power calculation, and the situation that calculation of the lighting rate is affected due to equipment faults or communication interruption is avoided. Furthermore, by collecting and analyzing electrical parameter data in real time, a reference value can be dynamically adjusted and updated, changes of lines or equipment can be reflected in time, and stable operation of a street lamp control system is guaranteed. Therefore, on the basis of accurate lighting power calculation, abnormal power consumption can be effectively detected and adjusted in time, the energy utilization efficiency of the street lamp control system is improved, and unnecessary electric power waste is reduced.

The utility model belongs to the technical field of geophysical exploration, and relates to a magnetotelluric data acquisition and transmission system, which comprises a plurality of acquisition terminals, each acquisition terminal is connected with data primary processing equipment, all the data primary processing equipment is connected to centralized storage processing equipment through a network, and the centralized storage processing equipment is connected with the terminals; wherein the acquisition terminal comprises a single-chip microcomputer, a magnetic field sensor, an electric field sensor, a first wireless communication module, an analog-to-digital conversion module, an acquisition monitoring module, a positioning module, a signal conditioning circuit and a storage module, and the first wireless communication module, the analog-to-digital conversion module, the acquisition monitoring module, the storage module and the positioning module are connected with the single-chip microcomputer; the electric field sensor and the magnetic field sensor are connected with the signal conditioning circuit, and the signal conditioning circuit is connected with the analog-to-digital conversion module. According to the utility model, the defects of high power consumption and difficulty in control are overcome, high-speed stable transmission is realized, the signal acquisition precision of the sensor is improved, and the sensor has development potential.

The present invention discloses an energy storage device for collecting wind energy and light energy, which belongs to the field of new energy technology and solves the problem that the real wind power abandonment and solar power abandonment (residual energy) still cause a certain degree of loss, resulting in poor utilization rate. It includes a low-temperature molten salt tank, which is used to store the medium before heating; a high-temperature molten salt tank, which is used to store the medium after heating; a multi-stage electric heating chamber, which is connected between the low-temperature molten salt tank and the high-temperature molten salt tank, and the multi-stage electric heating chamber includes a plurality of electric heating chambers, and the volume of the plurality of electric heating chambers decreases step by step from the low-temperature molten salt tank to the high-temperature molten salt tank. The present invention utilizes the excess abandoned electricity of wind energy and photovoltaic power generation to heat a plurality of small-volume electric heating chambers, and gradually increases the temperature to ensure rapid heating, and utilizes the excess medium of the previous stage as the insulation medium of the next stage to reduce heat loss. The insulation medium that loses heat is sent to the solar tower for photothermal heating, and then added to the electric heating chambers of each level to accelerate the medium to reach the standard temperature and reduce the waste of abandoned electricity.

The application discloses a satellite communication power dynamic adjustment method and system, which comprises the following steps: acquiring and analyzing signal monitoring data of satellite communication to determine key signal parameters affecting signal quality; analyzing data of the key signal parameters to determine data characteristics, and evaluating signal quality of the key signal parameters to obtain a signal quality evaluation value; calculating a communication quality evaluation value of the satellite based on the signal quality evaluation values of the key signal parameters; determining a communication quality requirement value of the satellite, and determining a communication quality difference value between the communication quality requirement value and the communication quality evaluation value; determining an adjustment coefficient of real-time communication power of the satellite based on the communication quality difference value, and dynamically adjusting the real-time communication power of the satellite. The application accurately quantifies satellite communication quality by analyzing satellite communication data, and dynamically adjusts satellite communication power by determining an adjustment coefficient through difference analysis, so that fine and progressive power control is realized.

The invention provides a coal-fired power plant load scheduling method, device and equipment and a medium, and belongs to the technical field of power plant coincidence scheduling. The method comprises the following steps of: distributing electric quantity according to a preset proportion by acquiring power load of a power grid and generating capacity of a coal-fired power plant; identifying a first power grid with the distributed electric quantity lower than the reference load and a second power grid with the distributed electric quantity higher than the actual load, and calculating the to-be-compensated electric quantity of the first power grid and the to-be-abandoned electric quantity of the second power grid. And if the to-be-compensated electric quantity of the first power grid is smaller than the to-be-abandoned electric quantity of the second power grid, the former is compensated by the latter, and the residual difference value is stored in the energy storage system as to-be-stored electric quantity. According to the invention, by optimizing the distribution of the generating capacity of the coal-fired power plant, balancing the load of the power grid, reducing the transmission loss, improving the economic benefit and enhancing the flexibility of the system, the utilization of renewable energy sources is effectively promoted, and the overall operation efficiency of the power system is improved.

The utility model relates to the technical field of inverter heat radiation, and especially discloses a multi-angle heat radiation fan and a heat radiation type inverter, comprising a fan part comprising an air outlet mechanism and an installation mechanism arranged above the air outlet mechanism, the air outlet mechanism and the installation mechanism are in transmission through a multi-direction transmission mechanism; the weeding component is mounted at the bottom of the transmission shaft I and used for cutting weeds; a multidirectional transmission mechanism is adopted, the fan blades are driven to rotate, meanwhile, the conical swing amplitude of the fan blades is achieved, the air flow speed in a wind direction area and an acceleration area is increased through the conical swing amplitude, and the heat dissipation effect is further improved; the weeding component rotates to enable the grass trimming rope to hit tall weeds under the action of centrifugal force, so that the weeds are broken, the tall trend of the weeds is inhibited, the problem that the radiator is easily damaged due to excessive weeds in a mountainous area is effectively solved, unnecessary cost waste is reduced, and the heat dissipation performance of the radiator is ensured.

The invention relates to a power distribution scheduling strategy method and system based on an artificial bee colony algorithm. The method comprises the following specific steps: S1, demand power distribution node active power prediction; s2, active power output and fluctuation prediction of distributed photovoltaic energy nodes; s3, constructing a power grid topology model; and S4, distributed photovoltaic energy node artificial bee colony power distribution scheduling. The invention provides a power distribution scheduling strategy method based on an artificial bee colony algorithm, and the method comprises the steps: setting a bee colony with a proper scale, carrying out the iterative search, randomly generating the active power of a centralized power generation end and the reactive power value in a power grid, enabling the fitness value of the bee colony to be the highest through the optimization of the active power and the reactive power, and achieving the optimal power distribution. Therefore, an optimal distributed photovoltaic energy node is selected, intelligent regulation and control of a photovoltaic load are realized, a matching relation between photovoltaic power generation and the load is dynamically adjusted, regional autonomous consumption is realized, the utilization efficiency of photovoltaic power generation is improved, the overall circuit loss and voltage fluctuation are remarkably reduced, and the stability and efficiency of a power system are improved.

A method and an apparatus for transmitting or receiving a configuration grant PUSCH in a wireless communication system are disclosed. A method according to one embodiment of the present disclosure may comprise the steps of: receiving individual configuration information related to one or more CG configurations from a base station; receiving, from the base station, control information including information on a specific interval and not performing transmission of a CG PUSCH in a CG PUSCH resource configured for one or more CGs included in the specific interval; and transmitting the CG PUSCH in a CG PUSCH resource configured for the one or more CGs not included in the specific interval.

The application discloses a kind of double-fan sintering machine group single-fan operation thick material layer sintering device and method, belong to metallurgical sintering technical field.The technical scheme of the present application mainly includes: first isolation stops fan and adjusts valve baffle to complete flue gas flow balance, optimizes raw material ratio and moisture to reduce material layer resistance, adopts double-layer loose material to improve ventilation condition, time-sharing period dynamic adjustment fan air pressure adapts sintering process, combined with whole system air leakage control and sintering endpoint linkage regulation and control, without modifying main equipment can realize 800-920mm thick material layer stable sintering.The present application solves the problem of insufficient air volume, uneven airflow distribution, uneven thick material layer sintering, large operating condition fluctuation and high energy consumption when the double-fan sintering machine group operates with single fan, can improve the quality of sintered ore, reduce production energy consumption, and ensure continuous operation of production line during equipment maintenance and fault period.

The invention provides a motor type selection method and device of excavating equipment and the excavating equipment, and is applied to the technical field of engineering machineries, the motor type selection method of the excavating equipment comprises the steps that firstly, performance parameters and actual working condition parameters of the excavating equipment are obtained, the performance parameters comprise the rotating speed, the torque and the power of the excavating equipment under different gears, and the actual working condition parameters comprise the rotating speed, the torque and the power; a temporary motor system is selected according to performance parameters of excavation equipment, performance parameters and model parameters of the temporary motor system are obtained, and then a motor simulation model is constructed based on motor temperature rise simulation software and the performance parameters and the model parameters of the temporary motor system. The method comprises the steps of obtaining a motor simulation model, inputting actual working condition parameters of excavation equipment into the motor simulation model to obtain temperature rise simulation data, and finally determining a target motor system of the excavation equipment according to the temperature rise simulation data. According to the invention, the problem that the motor type selection is not matched with the actual demand of the excavating equipment can be solved, and the power waste of the motor during the operation of the excavating equipment is reduced.

The present disclosure relates to an apparatus and a method for providing image stabilization by using a low power processor, and the method for providing image stabilization includes: loading an image stabilization control instruction group onto a memory in a general purpose processor when a camera is operated; executing initial setting based on the image stabilization control instruction group; driving a polling timer in dependence on the low power processor such that image stabilization can be performed at a preset period in the set of image stabilization control instructions; and performing, by the low-power processor, image stabilization with a set of image stabilization control instructions.

The application provides a data center power load prediction method based on large model intelligent agent social simulation, and relates to the technical field of data center load prediction. The application generates interaction information of different user intelligent agents based on large language model modeling user intelligent agents; simulates the propagation of interaction information in the user interaction graph and the transfer process of the dynamic state of the user intelligent agent based on the SIR model, and generates a user state evolution sequence; maps the user state evolution sequence to a disturbance load sequence, and predicts the future short-term power load based on a difference prediction model. The application enhances the cognitive ability of the user intelligent agent by using the large model, combines the propagation state evolution with the data center load modeling, accurately simulates the additional influence of the behavior of the user intelligent agent on the load, thereby improves the load prediction accuracy, can provide a reference for the advance scheduling and demand response of the power system, helps to reduce the peak energy consumption and improve the system scheduling efficiency, and indirectly reduces the power waste and energy consumption.

This application relates to the field of power supply technologies, and discloses an energy storage system, a method for controlling an energy storage system, and a photovoltaic power generation system. The energy storage system includes a battery cluster, a power conversion circuit, and a controller. An output end of the battery cluster is connected to a first terminal of the power conversion circuit, and a second terminal of the power conversion circuit is connected to an output end of the energy storage system. The power conversion circuit converts a direct current provided by the battery cluster into an alternating current and then transmits the alternating current to an alternating current power grid, or converts an alternating current obtained from the second terminal of the power conversion circuit into a direct current for charging the battery cluster. Each battery cluster includes at least two energy storage modules connected in series, each energy storage module includes one bypass circuit and one battery pack, and each battery pack includes a plurality of batteries. The controller controls each bypass circuit based on a first parameter value of each battery pack, so that electricity quantities of battery packs are balanced. Based on the energy storage system, the electricity quantities of the battery packs can be balanced, thereby reducing impact on a current of the battery cluster, and reducing a waste of the electricity quantities.

The application discloses a stepless adjustment variable rotor engine oil pump device and relates to the technical field of engine oil pumps.The device comprises an engine oil pump cover and an engine oil pump body, the engine oil pump body is provided with an adjusting groove, the adjusting groove is located on the inner side of a feedback oil cavity, the engine oil pump body is provided with a high-pressure oil cavity and a low-pressure oil cavity, and the high-pressure oil cavity and the low-pressure oil cavity are located on the outer side of an outer rotor; a rotor assembly comprises an outer rotor and an inner rotor, and the outer rotor is located in the inner cavity of the engine oil pump body; a pressure regulating assembly is provided with a pressure regulating plate, the pressure regulating plate is provided with an adjusting piece, and the adjusting piece is located on the inner side of the adjusting groove and is in sliding fit.The application adjusts the performance of the engine oil pump, improves the sliding environment of the moving parts of the engine, supplies oil as required, improves the problem of energy saving and emission reduction, saves the power waste of the engine under high speed through the pressure regulating plate structure, and achieves the effect of oil saving.