231 results about "Energy technology" patented technology

This invention relates to the field of new energy technology and discloses a battery cell and an electrical device. The battery cell includes: a shell having an opening along a first direction; a top surface of the shell formed at the end face of the opening along the first direction; a cover plate disposed at the opening of the shell, the cover plate including a body portion and an overlapping portion, the overlapping portion abutting against the top surface of the shell along the first direction; and a welding portion adapted to weld the shell and the cover plate together, the welding portion forming a molten first end and a molten second end, the direction from the molten first end to the molten second end being the welding direction; in a plane perpendicular to the welding direction, the projected area of ​​the molten first end is larger than the projected area of ​​the molten second end; along the welding direction, the molten second end is located within the body portion area. The battery cell provided by this invention allows the heat-affected zone during welding to penetrate deep into the interior of the cover plate along a direction perpendicular to the first direction, reducing the impact of the heat-affected zone on the thickness direction of the shell and improving the strength of the shell.

This invention belongs to the fields of new energy technology and artificial intelligence technology, and provides a high-resolution long-term photovoltaic power prediction method and system based on a dual-branch architecture. By constructing a parallel dual-branch architecture, the baseline branch extracts multi-scale features, and the ramp branch identifies power ramping events. The features from both branches are embedded through multiple channels and then fed into a BiGRU-Enhanced Transformer model with shared weights. By strategically deploying BiGRU layers at the input and between the encoder and decoder, local instantaneous dependencies and global long-term trends are captured simultaneously. A multi-task joint optimization loss function is designed for the ramp branch, using weighted cross-entropy and... L The probability, temporal location, and fluctuation amplitude of slope occurrence are jointly optimized using the L1 norm. Finally, nonlinear residual correction is applied to the outputs of the two branches to achieve the final prediction. This invention effectively overcomes the oversmoothing effect of deep learning models, demonstrating extremely high capture accuracy and robustness in long-term prediction of one month's worth of data at 1-minute resolution.

The application discloses a secondary battery and a power consumption device, and belongs to the technical field of new energy sources.The application is characterized in that a positive active material layer comprises a double-layer structure, and the conductive agent in the first active material layer close to the positive current collector is in a fibrous form, and the conductive agent in the second active material layer away from the positive current collector is in a granular form, so that the electrolyte can be promoted to permeate into the positive material, the polarization in the charging and discharging process is reduced, and the initial coulomb efficiency, the cycle performance and other electrochemical performances of the secondary battery are better.

This utility model discloses a cooling structure for a new energy battery pack, belonging to the field of new energy technology. It mainly includes a battery box and a cleaning component. Multiple new energy battery packs are fixedly installed inside the battery box. Heat dissipation fins, fixedly connected to the bottom of the battery box, are provided on both sides of each battery pack. The length direction of the heat dissipation fins forms an angle of approximately ~ degrees with the horizontal direction of the battery box. A blower fan is fixedly connected to one end of the battery box, located at the bottom end of the heat dissipation fins. A cooler, fixedly connected to the battery box, is located between the blower fan and the heat dissipation fins. This utility model uses the blower fan to blow cold air from inside the cooler along the length direction of the heat dissipation fins. When the air blows onto a sliding plate, it causes the sliding plate to slide obliquely upwards along the length direction of the heat dissipation fins. The inner wall of the sliding plate cleans the sides of the heat dissipation fins, thus achieving a cleaning effect.

The application discloses a kind of charging equipment health state evaluation method and its device, electronic equipment, it is related to new energy technology field, wherein, the evaluation method includes: the actual parameter value of the component parameter of target charging equipment is obtained, based on actual parameter value, using preset nonlinear model determines the benchmark value and increment value of different component parameters, for different components under each circuit, based on benchmark value and increment value, determine the health value of each different component, based on the health value of each different component, determine the health state of target charging equipment.The application solves the technical problem that the accuracy of related art for evaluating the health state of charging equipment is low.

This invention relates to the fields of microelectromechanical systems (MEMS) and new energy technologies, and discloses a piezoelectric energy harvester based on a nonlinear gradient negative Poisson's ratio structure. Its elastic matrix has a fixed end and a free end, with a negative Poisson's ratio structural segment on it. The piezoelectric transducer element is bonded to the surface of the negative Poisson's ratio structural segment via an epoxy resin adhesive layer. The core innovation lies in the nonlinear monotonically decreasing thickness of the elastic matrix from the fixed end to the free end along its length. This change profile is defined by a specific cubic polynomial function, which can accurately approximate the theoretical model of an isostress beam, making the stress distribution on the matrix surface tend to be uniform during vibration. Simultaneously, the lateral expansion characteristics of the negative Poisson's ratio structural segment and the longitudinal stress enhancement effect of the nonlinear thickness synergistically amplify the charge output of the piezoelectric element. This invention significantly improves the utilization efficiency of piezoelectric materials and the power density of the energy harvester, and has the advantages of compact structure, high energy conversion efficiency, and mass production via 3D printing.

This invention discloses a multi-source collaborative optimization control method for smart microgrids, relating to the field of energy technology. The method includes: connecting to the user side to predict the power supply demand of the target microgrid in a preset time zone; acquiring a hybrid energy supply module containing multiple distributed power sources; collecting historical power supply logs of the distributed power sources and generating relevant time sequences; performing energy curtailment rate analysis based on this to generate indicators and decisions; optimizing energy storage units after determining that the indicators meet the standards; and then performing multi-source collaborative power supply control according to preset demand. This method solves the technical problems of existing new energy power generation uncertainties that are difficult to accurately predict, and unreasonable energy storage module configurations that lead to significant energy losses during power generation, storage, and distribution, resulting in low energy utilization efficiency and unstable power supply quality. By optimizing and integrating new energy power generation, energy storage modules, and energy distribution in the microgrid, it achieves the technical effect of reducing energy losses and ensuring efficient and high-quality power supply to the microgrid.

This application provides a battery pack, energy storage system, power station, and charging network, relating to the field of energy technology, to solve the technical problems of poor heat dissipation and poor temperature uniformity. The battery pack provided by this application may include a cell assembly, a first heat exchange plate, and a second heat exchange plate. The cell assembly has a first heat-conducting surface and a second heat-conducting surface that are opposite to each other, and the electrodes of the cell assembly are all located on the first heat-conducting surface. The first heat exchange plate has a first plate surface with a first groove, the first plate surface being in thermal contact with the first heat-conducting surface, and the electrodes being located within the first groove. The second heat exchange plate has a second plate surface, the second plate surface being in thermal contact with the bottom surface. The battery pack provided by this application helps to reduce the temperature difference between different areas of the cell, thereby improving the temperature uniformity of the cell. Each cell in the cell assembly can dissipate heat through the first and second heat exchange plates, effectively improving the cooling effect and reducing the operating cost of the battery pack.

This application relates to the field of new energy technology, providing a control method, device, system, storage medium, and program product for an underwater compressed air energy storage system. It can employ a matching control strategy based on the actual operating conditions of the underwater compressed air energy storage system to ensure the reliability of its actual operation. This application involves obtaining the safety domain boundary of the underwater compressed air energy storage system; obtaining the current stability margin of the underwater compressed air energy storage system based on the distance between the current operating point of the system and the safety domain boundary; determining the current safety state of the underwater compressed air energy storage system from multiple preset safety states based on the current stability margin; and controlling the operation of components in the underwater compressed air energy storage system according to a control strategy matched to the current safety state.

This invention discloses a comprehensive energy operation simulation method and system based on multi-objective optimization, belonging to the field of energy technology, aiming to solve the problems of equipment overload and discontinuous power supply caused by supply and demand imbalance under extreme climate conditions. The method establishes a multi-objective collaborative optimization model based on the renewable energy types and seawater desalination load characteristics of the island microgrid. An improved NSGA-III algorithm is used to simulate the model and generate a scheduling scheme, including the start-up and shutdown sequence of the hydrogen production equipment. When a typhoon warning signal is received, the seawater electrolysis hydrogen production equipment is forcibly locked, and the output power of the diesel generator is fixed within a preset range. During the operation of the hydrogen production equipment, the output fluctuation data of the wave energy generator is collected in real time, and the operating power of the reverse osmosis seawater desalination unit is adjusted through a dynamic correction algorithm. When the hydrogen storage capacity of the hydrogen production equipment reaches a threshold, the power lock of the diesel generator is released, switching to a multi-energy coupling control mode, and the charging and discharging strategy of the energy storage equipment is updated synchronously.

This invention relates to the field of new energy technology and discloses a short-term wind speed prediction method based on LSTM neural networks. The method first collects multi-dimensional historical wind speed data from wind farms and performs standardized preprocessing to construct a high-quality training set. Then, it designs and trains an LSTM neural network model that can effectively capture temporal dependencies. Finally, it obtains a high-precision prediction model through validation and optimization. In application, the preprocessed real-time data is input into the model to achieve quantitative prediction of wind speed for the next few hours. This method establishes an online performance evaluation and automatic update triggering mechanism based on the inherent volatility of the data, forming a complete prediction-evaluation-optimization closed loop. This allows the model to self-perceive performance degradation and autonomously trigger retraining, thereby overcoming the problem of performance degradation of traditional static models due to environmental changes after long-term deployment. Ultimately, this ensures the accuracy, adaptability, and industrial application value of the prediction model in long-term operation.

The utility model relates to the field of regional energy technology especially an interface anti -drop data acquisition gateway, include: the gateway body that is equipped with port, in the detachable connection of terminal row has in the port, the lower fixed mounting of terminal row has connecting seat, the side fixed mounting of gateway body has the docking seat, wherein, the inside installation of docking seat has the lock catch component and is used for the positioning component of the lock catch component of positioning, the utility model in through installing connecting seat and docking seat on terminal row and gateway body respectively, the lock catch component on docking seat realizes and the locking connection of connecting seat with the help, to reach terminal row anti -drop purpose, in addition, the utility model in view of lock catch component still set up the positioning component and control, through positioning component can make lock catch component be in locking state and unlocking state, like in installation, overhaul and maintenance operation, can through positioning component and make lock catch component keep locking state.

This invention discloses a method for preparing high-purity hydroiodic acid based on an electrodialysis system, belonging to the fields of chemical engineering and new energy technology. The method includes: introducing a first iodide solution into the material chamber of a three-compartment bipolar membrane electrodialysis system; after acid-base preparation, a second iodide solution is obtained; the obtained second iodide solution is then introduced into the desalination and concentration chambers of a two-compartment homogeneous membrane electrodialysis system for electrodialysis concentration, yielding a third and fourth iodide solution; the products from each stage can be reused or sold after processing. This invention avoids the generation of the byproduct iodate, directly generating a high-purity, high-concentration hydroiodic acid solution, eliminating cumbersome and expensive purification steps, and completely achieving product separation. The process is simple, safe, and environmentally friendly. The acid produced by the three-compartment bipolar membrane electrodialysis system becomes a qualified hydroiodic acid product after passing through an MVR evaporation system, and the produced alkali, as a byproduct, can be sold or utilized, turning waste into treasure.

The application discloses a seat system applied to the field of new energy technology, which continuously supplies power to an environment monitoring module and an emergency call module through a power supply module, supplies power to a mobile device charging module when a seat sitting signal is received, supplies power to a seat temperature control module when an extreme weather signal monitored by the environment monitoring module is received, supplies power to an illumination module when a night signal monitored by the environment monitoring module is received, and stops supplying power to the seat temperature control module and the mobile device charging module when the storage capacity of the seat system is less than a storage threshold. It can be seen that the environment monitoring module and the emergency call module are supplied with power in priority according to the power supply priority, the core functions are guaranteed to be realized, the charging module is supplied with power only when the user has a charging demand when using the seat, and the corresponding modules are supplied with power when there is a temperature control and illumination demand, so that the power supply is reasonably distributed, and the multifunctional demand of the user when using the seat is efficiently met.

The utility model relates to the technical field of hydrogen energy sources, in particular to a 70MPa hydrogen integrated two-stage pressure reduction control device which comprises a valve body, and a gas inlet channel, a high-pressure channel, a first-stage pressure reduction channel, a second-stage pressure reduction cavity and a gas outlet channel are formed in the valve body. The electromagnetic valve is arranged on the side of the valve body, an inlet of the electromagnetic valve communicates with the air inlet channel, and an outlet communicates with the high-pressure channel; the first-stage piston type pressure reducing mechanism is arranged on the valve body, an inlet of the first-stage piston type pressure reducing mechanism communicates with the high-pressure channel, and an outlet communicates with the first-stage pressure reducing channel; the second-stage diaphragm type pressure reducing mechanism is arranged at the top of the valve body, the outlet end of the second-stage diaphragm type pressure reducing mechanism is communicated with the second-stage pressure reducing cavity and can input pressure-reduced gas into the second-stage pressure reducing cavity, and the inlet end of the second-stage diaphragm type pressure reducing mechanism is communicated with the first-stage pressure reducing channel; and the second-stage pressure reducing cavity is connected with the air outlet channel. By means of the unique two-stage pressure reduction structural design, stable pressure reduction output of 70 Mpa hydrogen can be effectively achieved, and the structure is stable and compact.

This invention discloses a transient control method for a wind turbine grid-connected system that utilizes a reverse energy absorption branch, relating to the field of new energy technology. The energy-consuming branch is connected in parallel to the DC bus capacitor. The grid connection point voltage and DC bus voltage of the wind turbine grid-connected system are acquired. When the grid connection point voltage reaches a preset condition, a reference value for the d-axis current of the grid-side converter is calculated based on the grid connection point voltage and the voltage of the DC bus capacitor. Based on the reference value, the active power state of the grid-side converter is switched to an active power absorption state, allowing the DC bus capacitor to store electrical energy and raise the voltage. When the voltage of the DC bus capacitor is greater than the threshold voltage of the transistor, the transistor is controlled to be in the conducting state. Through this technical solution, the direction of energy flow on the DC bus between the turbine-side converter and the grid-side converter can be changed. Furthermore, by consuming excess energy through resistance, wind turbine output oscillations and DC-side overvoltage can be suppressed, and the synchronous stability of the wind turbine grid-connected system can be improved.

The utility model discloses a kind of bracket structures for new energy circuit board production, belong to new energy technical field, comprising: bracket main body and the fixed base below bracket main body;The bracket main body includes two groups of L-shaped frame and support plate, the support plate is located between two groups of L-shaped frame and is hinged to each other, the bottom of the L-shaped frame is slidably arranged at the top of fixed base, the utility model is designed to the bracket main body structure, when the support plate is moved upward, the L-shaped frame of both sides will be deflected downward relative to support plate, the both ends of circuit board are released from rubber buckle, conveniently unload circuit board, while limiting buckle is folded in cooperation with the middle of adjusting assembly, conveniently the circuit board of different size is clamped and positioned, cooperate rubber buckle and stabilize circuit board on the top of bracket main body, device structure is simple, flexible and changeable simultaneously, applicable to most different size circuit board processing use.

This application relates to the field of new energy technology, and in particular to a method for configuring the capacity of pumped compressed air (PCO) energy storage. The method includes: establishing a target steady-state model based on the gas pressure of the water-gas co-containment chamber of the PCO power station, the corrected volume of at least one chamber, and the operating parameters of the target equipment; constructing a target parameter optimization model based on the target steady-state model; and coupling the target steady-state model and the target parameter optimization model to determine the target efficiency and target configuration parameters of the PCO power station; inputting the power output and load curves, the target efficiency, and the target configuration parameters into the established target two-layer power station capacity configuration model, and outputting the target capacity configuration result of the PCO power station. This solves the problem in related technologies where capacity configuration is derived solely through fixed parameters and simplified formulas, leading to significant deviations between the configuration results and actual operating conditions, thus reducing system energy conversion efficiency and equipment utilization.

This invention relates to the field of energy technology and discloses a method, apparatus, and storage medium for assessing the liquid level of a cold box in a hydrogen liquefaction unit. This invention combines the instantaneous rate curve of liquid hydrogen production with multiple preset experimental sampling logics, utilizing a preset cold box testing device to differentially obtain multiple sets of physical property parameters corresponding to the cold box during the hydrogen liquefaction process. Furthermore, by using a preset cold release convection heat transfer coefficient relationship, the target cold release convection heat transfer coefficient is determined, providing support for determining the defrosting frequency. This avoids frequent fixed-cycle defrosting operations and can more accurately guide the defrosting operation of the dynamic process combining the evaporation of the working fluid in the hydrogen liquefaction cold box and the injection of the working fluid into the cold box, thereby improving the technical and economic efficiency of liquid hydrogen production to a certain extent. Furthermore, by combining the determined defrosting frequency with the liquid level assessment results of the cold box in the hydrogen liquefaction unit, the operational efficiency of the dynamic process combining the evaporation of the working fluid in the cold box and the injection of the refrigerant into the cold box is improved.

The application discloses a technical state perception graph prediction method for new energy investment cost evaluation, and belongs to the field of energy system planning and artificial intelligence. The method obtains data such as investment cost, installed capacity, supply chain price, market, patent research and development and cross-border component flow of multiple new energy technologies in different regions and time sections, constructs a technical state representation vector and identifies a technical state; taking a technology, a region, a time and a state unit as a node, a state perception knowledge diffusion graph containing multiple relationship edges such as state similarity, state transition, knowledge overflow, cross-border diffusion, cost response and engineering constraint is constructed; the graph is input into a multi-relationship graph neural network to synchronously predict technical state transition and future investment cost trend. The prediction result can provide a quantitative basis for energy decision, installed capacity planning, capacity expansion scheme comparison and industry adjustment.

The application discloses a kind of base layer emergency vehicle-mounted double power supply integration roof lighting device, belong to emergency equipment and new energy technology field.The device includes roof base module, double energy power supply system, energy storage control system, lifting lighting system and green plant ecosystem.The application is powered by solar photovoltaic unit and vehicle generator power supply unit double way, combined with intelligent double energy switching circuit and lithium iron phosphate battery group, realize long time stable power supply.Ingenious green plant ecosystem is integrated in photovoltaic panel gap and lighting mechanism periphery, and its heat insulation vegetation layer is cooled by physics, significantly improve the working efficiency and life of energy storage control system and photovoltaic unit in high temperature environment.Lifting lighting system has floodlight and flash double mode, and can be remotely controlled.The application solves the problems of short endurance, easy to run out of power, high temperature influence and single function in the prior art, has the advantages of energy saving, light weight, quick installation, ecological and beautiful, especially suitable for grass-roots emergency rescue, command, patrol and other service scenes.

The waste gas treatment method and system based on the metal seawater battery involve electrochemical energy technology and environmental protection technology. The waste gas treatment method of the present invention includes the following steps: (1) introducing the waste gas generated by the near-shore waste gas emission device into the reaction zone of the metal seawater battery; (2) the hydroxide ions generated by the positive electrode of the metal seawater battery react with the carbon dioxide in the waste gas to neutralize the hydroxide ions, and the resulting carbonate ions combine with metal ions to form carbonates to reduce the carbon dioxide content in the waste gas. At the same time, the metal seawater battery outputs electrical energy. The tail gas CO2 capture efficiency of the present invention is high, reaching more than 80%, and at the same time, CO2 resource utilization is realized.

The application provides a renewable energy supply-distribution-demand-storage system space-time coordination configuration method, relates to the technical field of intelligent energy, and comprises the following steps: acquiring data of multiple regions; calculating time mismatch degrees, space mismatch degrees and space-time coupling mismatch degrees of the regions; decomposing an optimization problem into a long-term planning layer, a medium-term scheduling layer and a short-term real-time layer in a time dimension; constructing multi-objective optimization functions of the time layers; decomposing the optimization problems of the time layers in a space dimension; alternately solving local optimization sub-problems and global coordination problems of the regions by using a distributed iteration method; outputting a configuration result of a current time layer when the algorithm converges; executing a decision of a first time period by each time layer and taking the decision as a constraint condition of a next time layer to obtain power generation installed capacities, power transmission line capacities, energy storage capacities and operation strategies of the regions. The application can improve a renewable energy consumption rate and reduce system operation costs.

This application relates to the field of new energy technology, specifically providing a battery fault analysis method, system, control device, and storage medium, aiming to solve the technical problem of low efficiency in existing battery fault analysis technologies. To this end, the battery fault analysis method of this application includes: acquiring relevant parameters of the battery under test; determining the fault type of the battery under test based on the parameters; selecting at least one corresponding model according to the fault type; analyzing the fault of the battery under test based on the model; and obtaining management decisions for the battery under test based on the analysis results. This application initially determines the fault type of the battery, and then selects the corresponding model for analysis according to the different types of faults. Through this application, different types of models can be called for analysis of different types of battery faults, improving the accuracy of the analysis results and thus improving the analysis efficiency.

The utility model discloses a kind of rotary rod power tongs, it is related to petroleum energy technology field, including universal wheel, the top surface of the universal wheel is provided with adjusting unit, the side of the adjusting unit is provided with clamping unit, the side of the adjusting unit is provided with rotating unit, the clamping unit includes fixed frame, the fixed frame is arranged at the side of adjusting unit, the side of the fixed frame is fixedly connected with limit frame, the inside of the limit frame is fixedly connected with mounting bracket, the inside of the mounting bracket is rotatably connected with the fit component, the side of the fit component is provided with moving rod, the inside of the moving rod is rotatably connected with cylinder two. The utility model is provided with fixed frame, limit frame, mounting bracket, fit component, moving rod and cylinder two, the effect that the surface position of rotary rod is directly clamped and fixed is achieved, the efficiency when rotary rod is installed or disassembled is further improved, and work efficiency is improved simultaneously.

This disclosure provides an energy storage system and a pre-charging control method applied to the energy storage system, relating to the field of new energy technology. The system includes: an energy storage module connected to a DC bus, comprising one or more batteries; a bus capacitor connected to the DC bus; a pre-charging module connected in series on the DC bus, including multiple pre-charging branches connected in parallel, each pre-charging branch including a switching element and / or a current-limiting resistor, with one pre-charging branch including only a switching element; and a control module connected to the energy storage module, the bus capacitor, and the pre-charging module, used to monitor the voltage difference between the energy storage module and the bus capacitor during the pre-charging phase, control the switching elements in the multiple pre-charging branches based on the voltage difference to reduce the equivalent resistance of the pre-charging module as the voltage difference decreases, and control the closing of the switching elements in the pre-charging branch including only a switching element when the voltage difference is less than a preset threshold. Embodiments of this disclosure can improve the safety of the energy storage system.

This application belongs to the field of new energy technology, specifically relating to an installation structure adaptable to various battery pack models, including: a cabinet, at least one support frame, and at least one support component; wherein, at least one support frame is disposed within the cabinet; at least one support component is detachably disposed on the support frame, and the support component includes a support member and a support slide rail for supporting and guiding the support member in and out of the cabinet, the support member having multiple sets of mounting holes adapted to the shape of the battery pack, each set including multiple mounting holes arranged neatly, each set of multiple mounting holes corresponding to the assembly holes on various battery pack models. Through the mounting holes on the support member corresponding to different battery pack models, different battery pack models can be well adapted for installation, the battery packs are mounted on the support component to form a modular structure, and the support slide rail allows for easy pulling out of heavier battery packs, greatly reducing the difficulty of the work.

This application discloses a power module and power device, relating to the field of energy technology. The power module includes a pre-packaged module and a second packaging layer. The pre-packaged module includes a substrate, a chip, and a first packaging layer. The chip is disposed on a first side of the substrate, and the first packaging layer encapsulates the chip. The second packaging layer encapsulates the pre-packaged module, and the Tg value of the first packaging layer is higher than that of the second packaging layer. Using the power module design provided in this application, the pre-packaged body can be packaged as a whole. This allows the first packaging layer to protect the chip, improving the chip's structural strength and facilitating the miniaturization and thinning of the power module. Furthermore, since the Tg value of the first packaging layer is higher than that of the second packaging layer, it improves the junction temperature reliability of the chip, thereby supporting embedded packaging of high junction temperature chips, which enhances the market competitiveness of the power module.

The present application relates to a kind of hydrogenation process fuel cell vehicle control method and system, belong to new energy technology field.Add hydrogen judgment logic is through the hydrogen pressure periodically collected by hydrogen system, the pressure rise rate in specific time period is calculated, and the residual hydrogen mass rise rate is calculated according to temperature and pressure by gas state equation, simultaneously satisfy the condition of exceeding pressure rise rate threshold and residual hydrogen mass rise rate threshold, and vehicle is at safe speed, judge vehicle is in hydrogenation state, and vehicle control is cut off high voltage electricity.Avoid setting independent sensor switch in hydrogenation hatch, reduce cost, while it can avoid the unexpected parking safety risk caused by hydrogenation hatch abnormal opening under the harsh operating condition of fuel cell heavy truck.