2190 results about "Electrical energy storage" patented technology

The invention relates to the technical field of power supply devices, in particular to an energy-saving optimization method for an electric energy storage device, and the method comprises the steps: fusing a lithium ion battery solid-liquid phase change kinetic equation, a flow battery fluid mechanics equation and a flywheel rotor rigid-flexible coupling equation through a neural differential equation; constructing a dynamic meta-knowledge base containing cross-time scale nonlinear interaction features; performing dynamic parameter compensation on the polarization voltage hysteresis effect and the electrolyte flow resistance coupling effect by using a physical information neural network to generate a decoupled residual feature vector; according to the method, multi-physics field coupling modeling is achieved through the dynamic meta-knowledge base, and the energy efficiency optimization effect of the energy storage device is improved by combining the physical information neural network and the quantum optimization algorithm.

The invention relates to the technical field of electric energy storage systems, in particular to an energy storage power station operation monitoring management system and method. The method comprises the following steps: obtaining voltage data of each energy storage node in a standing state, and carrying out periodic voltage sampling within a preset standing time, thereby obtaining voltage springback time sequence data; performing temperature correction processing on the voltage springback time sequence data so as to obtain standardized voltage springback characteristic data; acquiring charge state data of each energy storage node before and after operation; calculating a charge-discharge depth change value of each node according to the charge state data; and constructing a node health state evaluation model according to the standardized voltage rebound characteristic data and the charge and discharge depth change value, and obtaining node aging differentiation parameters. According to the method, the node charging and discharging power allocation model is constructed based on the node aging differentiation parameters, differentiation management of energy storage nodes in different states is achieved, and the problem that the aging degree between the nodes is further expanded in a traditional method is solved.

An energy storage floor assembly for a motor vehicle having an electric drive includes an electrical energy storage device accommodated in a storage housing and arranged on the bottom side of a vehicle floor. At least one longitudinal beam is arranged within the storage housing. The front end of the longitudinal beam, viewed in the vehicle direction, is connected at least indirectly to a crossbeam component which is arranged in the region of a front-end structure and to which a front axle carrier is also attached. A load transfer element is installed between a rearward region of the front axle carrier and the front end of the longitudinal beam, which load transfer element has a front support region on the front end thereof and a rear support region on the rear end thereof. In an event of an accident-induced backward movement of the axle carrier as a result of a collision, the axle carrier can be supported on the front support region of the load transfer element, the rear support region of which can be supported at least indirectly on the longitudinal beam.

A fastening arrangement for a passenger motor vehicle includes an integral support fastened to longitudinal supports of a body of the passenger motor vehicle that are distanced from each other in a transverse direction of the passenger motor vehicle and are disposed above the integral support. An electrical energy store is disposed behind the integral support in a longitudinal direction of the passenger motor vehicle. The integral support has a step on an end that faces the electrical energy store where an upper support surface and a lower support surface are formed by the step. The upper support surface is disposed opposite a crossmember of the body in the longitudinal direction of the passenger motor vehicle and the lower support surface is disposed opposite a support element of the electrical energy store in the longitudinal direction of the passenger motor vehicle.

A modular electrical Energy Storage System structure for powering an electric motor in a vehicle. The modular ESS structure includes two or more electrical energy storage modules, the modular ESS structure extending in a longitudinal direction, in a transverse direction and in a vertical direction, the longitudinal direction coinciding with a driving direction of the vehicle, the two or more electrical energy storage modules being arranged side-by-side in the transverse direction, in the longitudinal direction and / or in the vertical direction and being connected to each other structurally and electrically. The modular ESS structure comprises a first mounting interface comprising one or more first connecting members configured for mounting to a vehicle structure.

The present invention relates to an electric energy storage (10) for a motor vehicle. A plurality of battery module groups (14) each comprise a plurality of battery modules (20) each of a plurality of battery cells. A plurality of containers (12) are stacked and each comprise a substantially frame-shaped container outer wall (18), wherein one of the plurality of battery module groups (14) is arranged in each of the plurality of containers (12). A plurality of fastening elements (16), which are elongated, extend through the container outer walls (18) of the plurality of containers (12) and fasten the containers (12) to one another. The elongated fastening elements (16) passing through all the containers (12) are advantageous in that they enable a modular, freely scalable design of the electric energy storage (10) with a free geometric configuration, low weight and costs, as well as simple, quick assembly and disassembly.

The invention discloses an energy efficiency improving method and device for a slope type gravity energy storage system, and relates to the technical field of electric energy storage systems. The method and device for improving the energy efficiency of the slope type gravity energy storage system comprise the following steps that S1, energy storage operation data are obtained through multi-source sensor fusion, and data cleaning and normalization processing are conducted on the energy storage operation data; s2, extracting a multi-dimensional state factor, carrying out quantitative evaluation on the operation state of the energy storage unit, constructing a state grading mechanism based on an evaluation result, and generating an operation state label; s3, calling a running state label to screen candidate units, constructing a scheduling priority ranking index, and dynamically allocating tasks and adjusting an execution sequence according to the index; and S4, analyzing structural wear and energy consumption load characteristics, establishing a scheduling correction mechanism, and dynamically adjusting a scheduling priority ranking index. The problem that the scheduling self-adaption cannot be realized according to the load, loss and wear difference of each unit in the parallel operation process of a plurality of energy storage units is solved.

A solar mosquito killer lamp includes a light emitted by the LED tube in the first light-emitting unit lures mosquitoes. The lured mosquitoes are killed through a high-voltage power grid. A battery and a circuit board arranged in a mounting shell supply power to the LED tube and the high-voltage power grid. Furthermore, a solar panel module electrically connected to the battery and the circuit board is provided, and can convert sunlight into electric energy and store the electric energy into the battery. Due to the solar panel module, compared with a mosquito killer lamp that only includes a single-layer solar panel, the mosquito killer lamp with the solar panel module enlarges an area of the solar panel, thereby improving the solar energy conversion efficiency. Therefore, the mosquito killer lamp can fully use the sunlight to achieve charging during outdoor use and is conductive to reducing the energy consumption.

The invention relates to the technical field of electric energy storage systems, in particular to a mathematical model-based vehicle-mounted charger component parameter optimization method and system. The method comprises the following steps: performing multi-physical field joint modeling according to a vehicle-mounted charger switching device to obtain a vehicle-mounted charger component simulation model; performing dynamic sensitivity analysis according to the vehicle-mounted charger component simulation model to obtain dynamic sensitivity matrix data; performing layered MINLP solution on the dynamic sensitivity matrix data to obtain battery impedance change curve data; and on-line parameter reconstruction is carried out according to the battery impedance change curve data to obtain vehicle-mounted charger component parameter optimization data. The adaptive capacity of the system to different working conditions is enhanced while the charging efficiency is improved, and the overall performance, stability and reliability of the vehicle-mounted charger are remarkably improved.

An electrical power apparatus for coupling between an electrical power supply and one or more electrical power loads includes: a plurality of dynamically dispatchable electrical energy storage components providing at least one of dynamically dispatchable energy storage thereto and energy retrieval therefrom; and a controller to dynamically control the operation of the one or more dynamically dispatchable energy storage components in order to dynamically match the electrical power supply to the one or more loads by dynamically storing energy in one or more of the dynamically dispatchable electrical energy storage components when the available electric power exceeds that required by the one or more loads, and / or dynamically supplying electrical energy from one or more of the dynamically dispatchable electrical energy storage components when the available electric power is less than that required by the one or more loads.

The invention provides an electric energy storage system, a graphene / carbon nanotube composite material, a capacitor, a secondary battery, a preparation method and an application. The electric energy storage system comprises a capacitor, the capacitor comprises a positive plate, the positive plate comprises a graphene / carbon nanotube composite material, the graphene / carbon nanotube composite material comprises a three-dimensional network skeleton, the three-dimensional network skeleton comprises a carbon matrix and doping elements, the carbon matrix is formed by compounding graphene and a carbon nanotube, and the doping elements are doped with the carbon matrix. The doping elements comprise a nitrogen element and a sulfur element, and holes are formed in the surface of the three-dimensional network framework. The electric energy storage system has excellent electrochemical performance, can release high energy density under high power density, and is long in cycle life.

The invention discloses a driving control method, device and equipment of a hybrid electric vehicle, a storage medium and a product, and belongs to the technical field of vehicles. Comprising the steps that a battery and a cab of the hybrid electric vehicle are heated through an air conditioner; under the condition that the battery cell temperature is lower than a second preset temperature, based on the battery cell temperature, determining a target rotating speed value matched with the battery cell temperature; the rotating speed value of the engine is controlled to be the target rotating speed value; the actual driving power of a driving motor of the hybrid electric vehicle is determined based on the opening degree of the accelerator pedal; based on the actual driving power of the driving motor, first available power of a generator of the hybrid vehicle is determined, the generator is controlled to generate power based on the first available power, and electric energy generated by the generator is stored in a battery; and determining the actual generated power of the generator, determining the second available power of the driving motor based on the actual generated power of the generator, and outputting the second available power to the driving motor, so that the driving motor drives the hybrid vehicle to run based on the second available power.

The invention discloses an integrated energy storage system and a control method, the integrated energy storage system comprises a battery management system, an energy management system and an energy storage converter, the energy management system generates a charging and discharging control signal to the energy storage converter according to battery information of an energy storage battery acquired by the battery management system and a received charging and discharging instruction; and the energy storage converter is controlled through the charging and discharging control signal, so that the energy storage converter transmits the electric energy stored by the energy storage battery to a power grid or stores the electric energy in the power grid into the energy storage battery, namely, charging and discharging between the energy storage battery and the power grid are realized. Visibly, the battery management system, the energy management system and the energy storage converter are integrated, the battery management system and the energy storage converter only need to communicate with the energy management system, and the energy management system performs centralized management on the battery management system and the energy storage converter; and the system can be put into use without connecting and testing each part, so that the charging and discharging efficiency of the energy storage system is improved.

Device for supplying electric power to at least one electrical energy-consuming unit or to at least one electrical energy-supplying unit or to at least one electrical energy-consuming and -supplying unit of an electrical installation, the device including a plurality of electrical energy generators, each generator of the plurality being connected electrically in parallel with the other generators, each generator including a computing unit, a power converter and an electrical energy storage and supply element, the power converter of a generator being bidirectional and configured so as to supervise a value of a setting variable on the basis of an electric charging or discharging power of the storage element of said generator, the electric charging or discharging power being calculated in real time by the computing unit on the basis: —of a function of the values of the setting variables of the electric charging or discharging power of each of the storage and supply elements of the other generators; and —of a determined setpoint power; and —of a number of generators that are in a determined operating state, the sum of the electric charging or discharging powers of each storage element of each generator of the plurality being equal to the determined setpoint electric power.

The invention discloses a power supply method, a power supply system and a cabinet, the method is applied to the power supply system, the power supply system comprises a PSU and an explosion power supply module, both the PSU and the explosion power supply module are connected with a bus of the cabinet, and the method comprises the following steps: detecting the state of the cabinet where the power supply system is located; and when the state shows that the cabinet has a transient power supply event, triggering the PSU and the explosion power supply module to supply power to the cabinet in a coordinated manner according to a transient power supply demand. The explosion power supply module is additionally arranged in the power supply system in the cabinet, and when the PSU supplies power to the cabinet at constant power, the explosion power supply module connected with the bus can obtain electric energy and store the electric energy. When a transient power supply event occurs in the cabinet, the explosion power supply module quickly supplements the electric energy required by the cabinet to supply power to the cabinet, so that the transient power supply requirement of the cabinet is met. Therefore, the power supply reliability of the cabinet when the transient power supply event occurs in the cabinet is improved.

The invention belongs to the technical field of energy storage, and particularly relates to a hybrid energy storage system energy management strategy based on adaptive weight and a related device. The invention provides a self-adaptive weight model based on a multi-layer perceptron by adopting a model prediction control method, and the self-adaptive weight model is used for real-time control of a hybrid energy storage system. Specifically, firstly, terminal constraint is applied to the state of charge of the electric energy storage equipment in an optimization function, then optimal weights corresponding to different initial state variables are calculated off line, and the multi-layer perceptron is trained according to the optimal weights. After training is completed, the multi-layer perceptron calculates the weight of the model prediction control module in real time based on the current state variable. And finally, the model predictive control module outputs an input variable of the system as a control reference value based on the obtained weight so as to control the system to operate. Compared with a traditional fixed weight model prediction control method, the weight can be adaptively adjusted according to the real-time state of the hybrid energy storage system, so that the control performance of the hybrid energy storage system is effectively improved.

The invention relates to the technical field of electric energy storage systems, and discloses an electric energy storage system hierarchical cooperative control method based on source-load-storage dynamic matching, and the method comprises the steps: obtaining a common connection point voltage sampling sequence, and calculating a second-order change rate; collecting the first-order change rate of the output current of the energy storage converter and determining a polarization constraint coefficient; switching a control mode according to a second-order change rate magnitude and a polarization constraint coefficient symbol, and utilizing a dynamic damping factor to constrain a duty ratio to adjust a step length; the dynamic damping factor is adjusted and increased when the polarization constraint coefficient exceeds a threshold value under the excitation and transformation state, so that the change rate of the output current is within the charge diffusion safety domain of the storage medium, dynamic damping is guided to implement asymmetric constraint through cooperation of trend pre-judgment and polarization stress identification, the output current is made to adapt to the charge diffusion limit, the switching frequency of the converter is reduced, and the stability of the converter is improved. Active substance precipitation is inhibited; and the total throughput of the equipment in the full life cycle is improved.

The utility model relates to the technical field of heat exchange units, and discloses an integrated skid-mounted heat exchange unit which comprises a main body box, one side of the front end of the inner bottom face of the main body box is fixedly connected with a first supporting seat and a second supporting seat, and the lower portion of the front end of the inner wall of one side of the main body box is fixedly connected with a liquid outlet pipe, a first circulating pipe and a liquid inlet pipe. And one side of the front end of the bottom surface in the main body box is fixedly connected with a standby water tank. When the heat exchange unit is used, light energy is converted into electric energy through the solar panel to be stored in the storage battery box, and the electric energy is processed by the inverter to be supplied to power supplies of all parts for use, so that environmental pollution caused by traditional energy is reduced, and the energy utilization efficiency is improved; and cold water in the standby water tank is pumped through the water suction end of the second water pump and conveyed into the liquid inlet pipe through the water outlet end, water cannot be supplied when the water supply system breaks down, and the practical performance is high.

The invention relates to the technical field of electric energy storage, in particular to a high-capacity battery pack state monitoring and equalization control method, system and device, and the method comprises the steps: obtaining the monitoring data of a plurality of single batteries in a high-capacity battery pack; determining a load state corresponding to each single battery based on the monitoring data of the plurality of single batteries; analyzing the influence of the load state corresponding to each single battery on the balancing efficiency, determining the adaptation degree of balancing of each single battery at the current moment, and determining the balancing priority corresponding to each single battery according to the adaptation degree; and performing equalization control on part of the single batteries in the high-capacity battery pack based on the equalization priorities corresponding to the single batteries. When the scheme is used in the electric energy storage process, the interference of load change on voltage judgment can be effectively reduced, the single battery which most needs to be balanced can be processed preferentially, the efficiency of balance control is improved, and the service life of the battery pack is prolonged.

Example steering wheel actuator device for a steer-by-wire steering system of a vehicle are disclosed herein. An example steering wheel actuator device includes at least one steering wheel angle measuring device to measure a steering wheel angle of a steering wheel, a motor device to generate a motor torque counteracting a driver torque applied to the steering wheel, a control device, and an electrical energy source that supplies the steering wheel actuator device with electrical energy. The actuator device has an electrical energy storage device is configured to supply at least one steering wheel angle measuring device with stored electrical energy if the steering wheel actuator device is not supplied with electrical energy by the electrical energy source. The electrical energy storage device can preferably be charged with electrical energy generated by the motor device if the applied driver torque surpasses the motor torque.

A road construction machine in the form of a road paver or a feeder vehicle for conveying paving material to a road paver, the road construction machine being self-propelled and having a primary drive source, a hopper, at least one working unit and at least one electric consumer for heating the working unit, the road construction machine having an energy supply system with at least one electrical energy storage which can be charged by means of electric current generated outside the road construction machine and is present on the road construction machine as an internal power source for direct current supply to the electric consumer. Furthermore, the disclosure relates to the use of such an energy storage for direct current supply to an electric consumer of a road construction machine.

The invention aims to provide a dynamic energy optimization scheduling method and system for a temporarily-built optical storage system, and belongs to the technical field of temporarily-built optical storage system control, and the method comprises the steps: obtaining the photovoltaic power generation power, the energy storage charge state and the load demand in real time, judging the power balance state, and controlling the cooperative operation of each unit according to the power balance state. When photovoltaic power generation is sufficient, redundant electric energy is stored in the energy storage unit; if not enough, energy storage and electricity supplementation are preferentially carried out, and the diesel generator is started if not enough. The system also combines historical data and a neural network to predict a future scheduling strategy, and optimizes an energy storage charging and discharging plan. In addition, non-critical loads are identified through the intelligent electric meter, and the power supply priority is dynamically adjusted. The system improves the operation efficiency and stability of the optical storage system, prolongs the service life of equipment, and is suitable for temporary building facility power supply scenes.

The invention discloses an operation method and system for a cloud energy storage and sustainable distributed energy system, and relates to the technical field of energy scheduling, and the method comprises the steps: carrying out the cooperative management of the cloud energy storage and sustainable distributed energy system for electric energy storage through multi-stage dynamic configuration and dual-scene cooperative scheduling according to the charging power demand; according to a charging power demand, maximization of a comprehensive net present value for measuring investment profit is taken as a target to establish a target function, flexibility is added to the target function, and a design constraint, an energy balance constraint, a charging pile optimal scheduling constraint and a scheduling constraint of a battery energy storage system BESS and a transformer are taken as constraint conditions. Constructing an optimal scheduling model for measuring economic benefits and environmental benefits; the cloud energy storage and sustainable distributed energy system is subjected to optimization management through a collaborative management and optimization scheduling model and addition of an aggregator for energy coordinated scheduling. According to the invention, the stability of power supply can be improved.

The invention relates to the field of machining equipment, and discloses a pressing device for machining and manufacturing, the pressing device comprises a base and a clamp mechanism, a linkage system driven by a hydraulic rod is arranged in the middle of the base in a hollowed-out mode, and a four-direction clamping structure is formed by a fixed clamping piece, an opposite moving clamping piece and linkage clamping pieces on the two sides. The outer layer is an ultra-high molecular weight polyethylene fiber woven layer, the middle layer is a shear thickening gel layer, the inner layer is an electromagnetically-controllable magnetorheological fluid cavity, and the electromagnetic coils distributed on the two sides of the clamping piece are matched, so that continuous adjustment of the contact rigidity from flexible attachment to rigid locking is achieved. The device is integrated with an energy recovery system, a lead zirconate titanate piezoelectric plate is arranged on a sliding rail at the top of a clamping piece, machining vibration energy is converted into electric energy to be stored in a bottom lithium battery, and power is supplied to an electromagnetic system to form an energy closed loop. The device breaks through the form limitation of a traditional clamp, can adapt to most special-shaped workpiece contours, meanwhile, has the functions of utilizing kinetic energy and reducing energy consumption, can meet the daily use requirement, and has commercial prospects.

The invention relates to the technical field of electric energy storage, and provides a flywheel energy storage motor and a use method. The rotor is rotationally connected to the interior of the shell, and magnetic resistance of the rotor is non-uniformly distributed in the circumferential direction of the rotor; the stator is arranged on the outer side of the rotor in a surrounding mode in the circumferential direction of the rotor, and the stator is connected with the shell; a stator coil is connected to one surface, facing the rotor, of the stator and is used for generating a rotating magnetic field capable of rotating around the axis of the rotor; gaps are formed between the stator and the rotor and between the stator coil and the rotor; the two ends, in the axis direction of the rotor, of the rotor are each provided with at least one magnet exciting coil, the magnet exciting coils are connected with the shell, the axes of the magnet exciting coils are parallel to the axis of the rotor, and gaps exist between the magnet exciting coils and the stator. According to the invention, the technical problems of complex structure, high manufacturing cost, poor high-temperature adaptability and great bearing burden caused by mainly adopting a flywheel permanent magnet motor in the existing flywheel energy storage technology can be solved.

The invention relates to the technical field of ship electric energy storage, and discloses a ship distributed electric energy storage and distribution balance control system which comprises a plurality of distributed storage units, a direct current bus, a plurality of power conversion modules and a dynamic balance control module. The dynamic balance control module is used for collecting the voltage deviation value of the direct current bus and the current response rate and the charge state parameter of each storage unit and determining a transient charge deviation compensation value, and the system determines the transient power flux of each node according to the current response rate and the charge state parameter. And dynamic linear calibration of feedback gain is realized based on the charge deviation compensation value so as to adjust the power output flow rate of each storage unit, the charge throughput of the direct current bus is balanced through real-time hedging of the surplus or deficient state of the transient charge of the bus, voltage oscillation during ship propulsion load switching is effectively inhibited, and the reliability of the ship propulsion load switching is improved. And the transient stability of the bus voltage is maintained.

The utility model discloses a rail type gravity energy storage external power station which comprises a power generation device, a rail train is arranged on a rail, and driving plates are arranged on the two sides of the rail train. The power generation device comprises a supporting platform, a supporting frame arranged on the upper side of the supporting platform in a sliding fit mode, a power generator arranged on the upper side of the supporting frame and a friction wheel in transmission connection with the input end of the power generator, the output end of the power generator is electrically connected into the storage battery energy storage control cabinet, and the supporting platform is further provided with a tensioning device connected with the supporting frame. The rail train travels from the upper portion to the lower portion of the rail, and the friction wheels are driven by the tensioning device to press the driving plate on the rail train through the power generation device. Through the external power station, when the train descends, the driving plate can drive the friction wheel to rotate, so that the generator is driven, gravitational potential energy is converted into mechanical energy and then converted into electric energy to be stored, the positions of the friction wheel and the driving plate can be accurately regulated and controlled, and power is effectively transmitted to the generator to generate electricity.

A cell module for an electrical energy storage device of a motor vehicle includes at least one cell structure made up of energy storage cells, a metallic cell module frame, enclosing the at least one cell structure, for clamping the energy storage cells, and a measuring device for detecting a deformation of the cell module frame related to cell expansion. The measuring device includes a passive resistive extension sensor having a deformation-dependent electrical resistance and a measuring unit connected to the extension sensor to output an electrical measurement signal characterizing the deformation-dependent electrical resistance of the extension sensor. The extension sensor is formed by the metallic cell module frame, with which the measuring unit is electrically contacted.

The invention discloses a multi-element energy storage system anti-disturbance cooperative control method and system and a medium, and the method comprises the steps: obtaining the real-time operation data of a multi-element energy storage system which comprises an energy conversion and storage device, the energy conversion and storage device comprises an electric energy-heat energy conversion device, an electric energy-hydrogen energy conversion device, an electric energy storage device, a heat energy storage device, a hydrogen energy storage device and a superconducting magnetic energy storage device; constructing a multi-energy complementary comprehensive energy system model containing a minimum total operation cost objective function based on the real-time operation data; solving the multi-energy complementary comprehensive energy system model, and generating an anti-disturbance cooperative control strategy; and the charging and discharging instruction is controlled to be sent to the multi-element energy storage system based on the anti-disturbance cooperative control strategy to control cooperative operation of the multi-element energy storage system, so that real-time power balance of the multi-element energy storage system is realized, new energy output fluctuation and user load sudden change can be quickly responded, and the operation stability and anti-risk capability of the multi-element energy storage system are improved.