1757 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.

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.

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 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.

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 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.

An electric energy storage fabric prepared based on a miniature capacitor is formed by weaving energy storage fibers and first fibers which serve as wefts alternately at intervals and second fibers which serve as warps, and each energy storage fiber comprises an energy storage unit and a fiber layer wrapping the periphery of the energy storage unit. The energy storage unit comprises a plurality of miniature capacitors which are arranged at intervals, a positive wire which is connected to the positive end faces of the miniature capacitors, and a negative wire which is connected to the negative end faces of the miniature capacitors. The structure of the electric energy storage fabric is limited, and the miniature capacitor is matched with the positive wire and the negative wire to form the energy storage fiber, so that the prepared fabric can be combined with a small photovoltaic panel and the like to be used for outdoor green energy, the application range of the miniature capacitor is further widened, and the compatibility of the miniature capacitor is effectively improved.

The invention discloses an energy storage power station-oriented battery aging sensing self-adaptive charging and discharging control method and system, and relates to the technical field of electric energy storage. The energy storage power station battery aging sensing self-adaptive charging and discharging control method comprises the following steps: S1, collecting battery working condition physical data, and preprocessing the battery working condition physical data; s2, acquiring a health attenuation factor, evaluating the health state of the battery, judging the health level of the battery based on an evaluation result, and generating a health level label; s3, evaluating the charging and discharging regulation and control capability of each battery, calculating a target charging and discharging current, generating a current instruction set, and implementing a current regulation task; and S4, evaluating the matching degree of the current adjustment strategy and the battery state after each round of current adjustment, and dynamically adjusting the target current. The problems that a traditional energy storage power station lacks a real-time identification and differentiation control mechanism for the aging state of the battery, and system capacity attenuation and thermal potential safety hazards are likely to be caused are solved.

The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic charging and discharging control method and system based on a direct-current coupling optical storage all-in-one machine, and the method comprises the steps: monitoring system operation parameters in real time; after the countercurrent risk is judged, energy storage is preferentially utilized to absorb redundant electric energy; when the stored energy is saturated, the photovoltaic output is dynamically adjusted instead of shutdown; when photovoltaic power generation is insufficient, the gap is supplemented through energy storage discharge. By monitoring system operation parameters in real time and dynamically coordinating photovoltaic power generation, energy storage charging and discharging and load requirements, photovoltaic energy is utilized to the maximum extent while reverse current of a power grid is avoided, redundant electric energy is preferentially stored in a battery, and photovoltaic output is intelligently adjusted instead of direct shutdown after energy storage is saturated; and when the load demand is higher than that of photovoltaic power generation, a gap is supplemented through energy storage discharge, so that energy waste is remarkably reduced, the system operation time is prolonged, the overall power generation income and economy are improved, and safe and stable operation of a power grid is ensured.

The invention relates to a device with a number of hold-down devices (10) and a laser welding device (7) for welding a plate-shaped cell connector unit (2) having a plurality of cell connectors (4) to electrical poles (P) arranged on a narrow side (S) of a prismatic cell housing (5) of individual cells (1) combined to form a cell assembly (Z) and positioned relative to one another for electrical interconnection to form an electrical energy storage device. According to the invention, the device comprises an integral tool (3) with - a web-shaped base support (8), - a plurality of suction nozzles (9) arranged alternately along a longitudinal axis of the base support (8) for receiving the cell connector unit (2) and a plurality of hold-down devices (10) for applying a hold-down force to the cell connectors (4) of the cell connector unit (2) to be welded to the electrical poles (P) of the adjacent individual cells (1), and - a robot and / or gantry axis connection (11) arranged at one end of the base support (8). Furthermore, the invention relates to a method for welding cell connectors (4) to electrical poles (P) of individual cells (1).

A hybrid electrochemical device configuration that comprises a first electrode that includes a redox reactive material or an alloy based on a transition metal, a second electrode that includes a multi-functional catalyst to catalyze hydrogen evolution reaction, hydrogen oxidation reaction, and water oxidation reaction at the second electrode, a separator disposed between the first and second electrode, an electrolyte disposed between the first electrode and the second electrode, and a conduit which provides the means to compensate for water loss in the electrolyte during electrochemical device operation. At least one valve is included that connects the electrolyte management system to the conduit system and a valve to connect the gas formed in the electrode to the gas management system. The electrochemical device configurations include several individual devices stacked on top of each other and separated from each other using separation plates.

The present invention discloses a mechanical energy storage elevator system based on flywheel energy storage, which includes a load-bearing component and a power component for driving the load-bearing component upward or downward; the load-bearing component includes a car and a counterweight; the power component includes a traction rope, a guide wheel, a driving wheel, a gearbox, a motor and a flywheel; the traction rope is wound around the driving wheel and the guide wheel, and the two ends are respectively connected to the car and the counterweight; the motor is connected to the driving wheel through the gearbox, and the power is transmitted to the driving wheel through the gearbox; the flywheel is connected to the driving wheel through the gearbox, and the mechanical energy of the driving wheel is received and stored by the gearbox. By utilizing flywheel energy storage, the present invention can recycle the gravitational potential energy of the elevator when it is empty and when it is fully loaded. It not only solves the fire protection and safety problems caused by the elevator's electrical energy storage, but also avoids the impact of elevator energy feedback and harmonics on the power grid, improves energy utilization efficiency, reduces elevator energy consumption, and thus reduces building energy consumption.

This synthetic stone can be used as electrical energy storage which acts like a supercapacitor and invention also discloses a preparation method thereof. According to this invention, geopolymer (11) and cement (12) are being taken as materials for an electrolyte. A supercapacitor of the present invention comprises a geopolymer (11) and cement matrix (1) and a positive and negative steel electrode (2, 3), whereby the steel electrodes (2, 3) are arranged in the matrix (1), and the matrix (1) is prepared from conductive mortar. The conductive mortar (1) comprises fly ash, cement (12), gravel and sand, alkali activator (KOH and SiO2) (13), and some additives (14) of synthetic stone compounds such as poly carboxylate ether, retarder, lignosulfonate, ethylene-vinyl acetate, hydroxypropyl methyl cellulose, pigment and carbon black. This supercapacitor synthetic stone is simple in structure and is based on a particular formulation.

An energy store floor assembly for an electrically drivable motor vehicle includes a floor assembly with respective cross members, which extend between respective side sills and on the underside of which a vehicle floor is arranged, and an electrical energy store device, which is arranged under the vehicle floor and is accommodated in a multi-part store housing. To create an energy store floor assembly which is particularly lightweight and easy to produce, a housing upper part of the store housing forms the vehicle floor of the floor assembly, which is connected to at least one housing lower part via at least one gas-tight connection to form the store housing, which is fastened to the floor assembly on the underside of the cross members.

An arrangement of an electrical energy store on a body shell for a passenger car. The body shell has two side sills between which a main floor extends, where the entire main floor is formed by a housing cover of a housing of the electrical energy store. The housing has a lower part which is located, in the passenger car vertical direction, below the housing cover and has a receiving space for storage cells for storing electrical energy. The receiving space is formed by the housing cover and the lower part. The housing cover has cooling ducts through which coolant is flowable where at least a portion of the electrical energy store is coolable by the coolant. Spaces are located between the storage cells and at least parts of a floor of the lower part.

A store housing for an electrical energy store of a motor vehicle includes multiple housing walls which surround a receiving space for receiving at least one storage component of the electrical energy store, wherein at least one of the housing walls has a passage opening for discharge of a liquid which has accumulated in the receiving space into surroundings of the store housing, and at least one valve which is designed to conduct the liquid away from the receiving space into the surroundings via the passage opening and to at least reduce ingress of liquid from the surroundings into the receiving space via the passage opening. The at least one valve has a passive valve arranged in or at the passage opening. The valve has a first flow resistance in a first flow direction from the receiving space into the surroundings and has a second flow resistance in a second flow direction from the surroundings into the receiving space, which second flow resistance is larger in comparison with the first flow resistance.

The invention provides a capacity configuration method and device for an off-grid wind and light storage system containing a light storage all-in-one machine, and relates to the technical field of electric energy storage. The method comprises the following steps: determining a capacity configuration parameter of the off-grid wind and light storage system; based on the capacity configuration parameters, determining the hourly abandoned electric quantity of the off-grid wind and light storage system in a preset time period; accumulating the hour-by-hour abandoned electric quantity to obtain the total abandoned electric quantity under the corresponding capacity configuration parameters; in a preset iteration frequency range, updating power generation model parameters, independent energy storage model parameters and optical storage all-in-one machine model parameters, and repeatedly carrying out hour-by-hour power abandoning quantity accumulation to obtain a total power abandoning quantity result corresponding to a plurality of capacity configuration parameters; and selecting the capacity configuration parameter with the minimum total abandoned electric quantity from the plurality of capacity configuration parameters as a target parameter configuration result. According to the technical scheme, the optimal parameter selection of the off-grid wind and light storage system under various capacity configuration schemes can be realized, so that the abandoned electric quantity of the system is effectively reduced.

The invention discloses a modular hydraulic energy recovery device and a recovery method thereof, and relates to the technical field of hydraulic energy recovery. A high-pressure pipeline of a hydraulic system is connected with the three functional modules in parallel through a multi-way pipe fitting, and a modular energy recovery system is formed. The high-pressure module adopts the combination of a leather bag type energy accumulator and a throttle valve, energy absorption is carried out aiming at the working conditions of high system pressure and slow change, and the pressure is stably released by utilizing the elastic energy storage characteristic of the energy accumulator; the high-frequency module is provided with a diaphragm type energy accumulator which is high in response speed, and instantaneous pressure fluctuation is rapidly restrained by dynamically adjusting the opening degree of a throttling valve; the power generation module drives a power generator through a hydraulic motor, and transforms the over-limit energy stored by the energy accumulator into electric energy for storage. The main control module monitors the system pressure and the change rate thereof in real time, dynamically switches the working states of the modules according to preset logic, and introduces a machine learning algorithm to optimize a threshold decision, so that the system adapts to complex working conditions.

The invention relates to an electrical energy storage device with a housing (1) in which a plurality of electrically connected individual cells (3) and a pressure element (4) for pressurizing the individual cells (3) are arranged. According to the invention, the pressure element (4) can be pressurized with a fluid and is elastically deformable and extends over the entire length of a predetermined housing wall (2.3) between this and individual cells (3) arranged at the edge, wherein the pressure element (4) exerts a prestressing force (F) on the individual cells (3) in such a way that the individual cells (3) in one row bear against an opposite housing wall (2.2) in sections and the individual cells (3) are fixed in the housing (1).

The invention discloses a building photovoltaic integration and air conditioning system fusion system comprising a photovoltaic power generation subsystem used for converting solar energy into electric energy; the energy storage subsystem is used for storing and releasing electric energy; the air conditioning subsystem is used for adjusting the indoor environment of the building; the intelligent management and control subsystem is in communication connection with the photovoltaic power generation subsystem, the energy storage subsystem and the air conditioner subsystem and is used for collecting operation data of the subsystems, predicting photovoltaic output and air conditioner loads and executing scene-divided energy scheduling based on a model prediction control algorithm; therefore, the cooperative operation of preferentially supplying photovoltaic electric energy to the air-conditioning subsystem, storing or grid-connecting surplus electric energy, and supplementing energy by the stored energy or the power grid when the energy is insufficient is realized. According to the system, efficient production, storage and intelligent utilization of building energy can be achieved, a novel building energy system with self-generation and self-use, residual electricity storage and coordinated regulation is constructed, and the core problems that an existing building photovoltaic and air conditioning system is poor in collaboration and low in intelligent level are solved.

The invention provides a gas turbine and solid oxide fuel cell combined cycle system. The gas turbine and solid oxide fuel cell combined cycle system comprises a gas turbine engine mainly composed of a gas compressor, a main combustion chamber, a turbine, a fuel tank and the like; a heat exchange system is mainly composed of liquid ammonia storage equipment, an integrated heat exchanger and a cracking device, the integrated heat exchanger comprises an air-air heat exchanger and an ammonia-air heat exchanger, the air-air heat exchanger is communicated with an outer culvert air entraining and gas compressor, and the ammonia-air heat exchanger is communicated with the liquid ammonia storage equipment, the cracking device and a turbine. The air-air heat exchanger is communicated with the ammonia-air heat exchanger in the integrated heat exchanger; the cracking device is communicated with the main combustion chamber; the airborne equipment power supply system is mainly composed of a solid oxide fuel cell, a cell and an electric power system, the solid oxide fuel cell is connected with the air-air heat exchanger and the ammonia-air heat exchanger of the integrated heat exchanger and used for generating electric energy, and the cell and the electric power system are connected with the solid oxide fuel cell and used for conducting electric energy storage and electric power control.

The invention relates to a method for operating a motor vehicle locking system (1), wherein the motor vehicle locking system (1) has a drive (2) with an electric drive motor (3) and a control arrangement (4) for controlling the drive (2) in order to provide a motorized closing function for an adjustable closure element (5) of the motor vehicle (6), wherein the control arrangement (4) has an electrical, rechargeable energy store (9) with at least one capacitor (10), wherein an electrical emergency supply voltage is made available by means of the energy store (9) in emergency operation, in particular in the event of a failure of a normal supply voltage.It is proposed that a diagnostic routine is carried out by means of the control arrangement (4), in which the capacitor (10) is connected to a reference potential via an inductance (11) in order to generate a current pulse with a pulse duration of less than 1000 µs, and in which an equivalent resistance of the capacitor (10) is determined on the basis of a capacitor current measured in the current pulse and a capacitor voltage measured in the current pulse.