957 results about "Electrical energy storage" patented technology

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.

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 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.

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.

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.

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.

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 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 discloses an intelligent scheduling method and system for a new energy load at a vertical take-off and landing point, and belongs to the technical field of new energy scheduling, and the method specifically comprises the steps: obtaining multi-main-body energy demand data through a power supply circuit device, and carrying out the distributed storage and desensitization processing; combining the processed multi-subject energy demand data with the real-time state information of the battery of the electric energy storage system, and calculating the dynamic energy distribution weight of each partner by adopting an improved Shapley value algorithm; on the basis of the weight and the real-time task dynamic state of each partner, a new energy scheduling rule is constructed, a control instruction is generated according to the new energy scheduling rule, new energy resources are scheduled and allocated, and a result is fed back to the electric energy storage system and each partner; according to the invention, the intelligent level, fairness, system energy efficiency and adaptive ability of new energy scheduling in a multi-partner scene are effectively improved.

The invention discloses an energy management method and device for an LED street lamp photovoltaic energy storage system, and the method comprises the steps: obtaining the output characteristic data and environment illumination data of a photovoltaic module of the energy storage system, and carrying out the energy conversion optimization, and obtaining the electric energy information; acquiring a charge state of a first energy storage unit of the energy storage system based on the electric energy information, executing three-stage electric energy storage to obtain a current energy storage state, and activating a second energy storage unit of the energy storage system; according to the current energy storage state and the environment illumination data, the power supply proportion of the first energy storage unit and the second energy storage unit is dynamically allocated, and an LED street lamp illumination instruction is generated; and through the LED street lamp illumination instruction, monitoring a power supply loop in real time, carrying out energy supply cooperative matching, and outputting a system protection instruction. The dynamic stability problem of the system under the complex working condition can be solved, and the operation reliability of the system under the continuous cloudy and rainy or extreme temperature condition is improved.

A computer system has processing circuitry to: acquire cell data from cell sensors of an electrical energy storage pack of an electrical energy storage system of a vehicle, determine at least two states of the cells based on evaluating the cell data; input the at least two states as input to a reinforcement learning algorithm configured to calculate control signals to balance the at least two states across the cells, and provide an output indicating the control signals.

A vehicle includes an electric powered propulsion system. An electric energy storage system is electrically connected to the electric propulsion system and is configured to have an electrical energy storage component and a controller. A charging port is connected to the electric energy storage system and configured to connect to an external power source. The controller includes a memory and a processor. The memory stores instructions for causing the processor to optimize a charging profile based on a plurality of received parameters using a multi-objective constrained optimization problem. The received parameters include a power type of a connected external power source, and at least one of a requested ready to depart time, a targeted state of charge, and an effective range.

A power supply circuit for an x-ray production system, which has an inverter circuit with an output for connecting the inverter circuit with an x-ray source of the x-ray production system, includes a rectifier circuit including an input to connect the rectifier circuit with a power supply network, the rectifier circuit further including an output to connect to an input of the inverter circuit; and a backup circuit including a plurality of electrical energy storage cells, the plurality of electrical energy storage cells being connectable in series between the input of the inverter circuit and the output of the rectifier circuit.

The invention relates to an electrical energy storage device (1) for a vehicle comprising a plurality of electrically interconnected individual cells (2) arranged in rows (Z1 to Zn) and columns (S1 to Sm) in a housing (3). According to the invention, the individual cells (2) are arranged in the housing (3) in a quasi-random distribution with irregular row spacing (az1 to az3) and / or column spacing (as1 to as3).

A computer-implemented method establishes map relating geographical location to vibration health impact on electrical energy storage systems adapted for providing propulsion power for a vehicle. A computer-implemented method improves a lifetime of an electrical energy storage system adapted for providing propulsion power for a vehicle when travelling on a route from an origin to a destination for accomplishing a mission.

A system and a method control the energy required from an internal combustion engine (ICE) of an all-terrain machine with terrain engagement elements for moving the machine and hydraulic pumps for supplying hydraulic flow to a material handling attachment. The ICE drives the terrain engagement elements and a first hydraulic pump. The ICE drives a generator to provide electrical energy, which is stored in a battery. The stored electrical energy is selectively supplied to an electric motor, which drives a second hydraulic pump. If the total energy supplied by the ICE exceeds a predetermined level, the hydraulic flow supplied by the first hydraulic pump is reduced, and the hydraulic flow supplied by the second hydraulic pump is increased. The system and method allow a less powerful ICE to drive the machine.

A charging management method includes estimating via a control unit a total energy requirement to be met by a rechargeable electrical energy storage unit for performing an agricultural task, comparing via the control unit the estimated total energy requirement with a present state of charge of the electrical energy storage unit, and when the comparison is not sufficient to complete the agricultural task, the control unit retrieves charging infrastructure information relating to a geographical position of a plurality of charging stations along a route to be covered during the agricultural task from a data memory, ascertains an intention for a travel interruption of the agricultural working vehicle to be inserted, depending on the application, along the route, and assigns the geographical position of the travel interruption to at least one of the plurality of charging stations and outputs a charging recommendation via a data interface.

The invention relates to a disconnect switch (1) for an electrical circuit, in particular for disconnecting an electrical energy storage device from an electrical installation, comprising a busbar (3) via which a first power terminal (4) of the disconnect switch (1) is electrically connected to a second power terminal (5) of the disconnect switch (1), and a disconnecting element (7) for mechanically cutting the busbar (3). The disconnect switch (1) is characterized by an energy absorption element (9) for absorbing thermal energy generated as a result of the cutting, which has a shell (10) made of a polymer material and an energy absorption body (11) made of a mineral material arranged in the shell (10).

This invention discloses a device for driving a closing component (9) in a building using a solar power source (1). It includes at least one low-voltage AC motor (3) mechanically connected to the closing component, a DC energy storage element (2), and a solar power source supplying DC voltage. The energy storage element has a rated voltage lower than the effective voltage and greater than the DC voltage supplied by the solar power source. A DC-DC charger (4) converts the output electrical energy from the solar power source into electrical energy having a charging voltage of the energy storage element. A DC-AC converter (5) converts the electrical energy from the DC output voltage of the energy storage element into electrical energy having an AC voltage capable of powering the motor.

This hydrogen-powered electric vehicle comprises an electric drive unit for driving at least one drive wheel of the vehicle, at least one electrical energy storage battery, at least one fuel cell module, a hydrogen tank for the fuel cell, and a hydrogen circuit connected to the tank, including components through which hydrogen circulates. It includes a set of hollow guide conduits (12, 13), each having a first end (14) opening at a component of the hydrogen circuit and a second accessible end. Figure for the abbreviation: Fig 2

The invention relates to a core temperature sensor (CTS) for use with a microwave cooking appliance that generates microwaves within a specific microwave frequency band for cooking food, wherein the core temperature sensor (CTS) comprises: at least one temperature sensor (TS), an antenna (ANT), a high-frequency oscillator (1) whose output signal can be fed into the antenna (ANT) and whose signal frequency lies outside the microwave frequency of the microwave cooking appliance, a modulation device (OOK) configured to generate a pulse train from the output signal of the high-frequency oscillator (1) by means of amplitude modulation, which corresponds to digital temperature data generated by means of the at least one temperature sensor (TS), and an electrical energy storage device (BAT) for supplying electrically operated components (MCU, TS, OSZ-AMP) of the core temperature sensor (CTS).The invention also relates to a system comprising a core temperature sensor and a cooking device, comprising a receiver for receiving electromagnetic waves emitted by the core temperature sensor and a control device configured to operate the cooking device based on information contained in the received electromagnetic waves.

The invention relates to the technical field of electric energy storage systems, and discloses a user cluster load-based distributed electric energy storage system combined power supply control method, which comprises the following steps of: acquiring voltage and current parameters of a grid-connected point of a storage unit, and calculating a voltage support strength characterization quantity; constructing an available energy adjustment coefficient according to the state of charge; extracting a power control loop instruction tracking deviation, and generating a sensitivity factor according to the deviation energy spectrum distribution; fusing the voltage support strength characterization quantity and the factor to construct a virtual impedance mapping model; calculating a cross correlation coefficient of tracking deviation and voltage phase fluctuation, and generating a hardware characteristic phase compensation offset; in combination with the available energy adjustment coefficient, the mapping model and the offset, the power output slope and the inverter pulse width modulation wave are adjusted, the topology coupling degree is inversed by controlling the residual error, the network operation stability is guaranteed, and the service life of hardware is prolonged.

The invention relates to the technical field of industrial bulk material conveying energy conservation, in particular to a coal blanking energy recovery system which comprises a blanking point receiving device, a compressed air unit, a multi-stage air pressure boosting and stabilizing module, an air generator and electric energy storage equipment which are sequentially arranged in the energy transfer direction. The compressed air unit is arranged at the downstream of the blanking point receiving device and comprises a piston cylinder body and a piston rod which reciprocates in the piston cylinder body; the multi-stage air pressure boosting and stabilizing module is connected in series on an airflow channel between the compressed air unit and the air generator; the inlet of the air generator receives stable high-pressure airflow, and the electric energy output end is connected with the electric energy storage device through a cable. Through high-efficiency conversion of mechanical-air pressure-electric energy and multi-stage cooperative regulation and control, high-efficiency and reliable recovery of transient and fluctuating impact energy is realized.

The apparatus for forming a stack of electrodes is associated with a machine for manufacturing electrical energy storage devices, of the type comprising a stack of electrodes formed by folding a flexible strip (2) comprising at least one separator element (20), a series of anode elements (21) and a series of cathode elements (22), applied alternately on said separator element (20). The apparatus comprises feed means (10) for advancing said flexible strip (2) along a feed direction (A) on a feed plane and folding means (3) suitable to be operated in a suitable step relationship to perform a series of folds orthogonal to the feed direction on said flexible strip (2) and to deposit the flexible strip (2) thus folded on a stacking plane (4). The apparatus comprises rotatable means (5) capable of being driven in continuous rotation and having distributed peripherally a plurality of devices (55, 56) for collecting and transferring said anode and cathode elements (21, 22) on the flexible strip (2) in the folding step onto the stacking plane (4).

A computer system (100) for diagnosing an electrical connection within an electrical energy storage pack (108) comprising multiple electrical energy storage cells (110), the computer system comprises processing circuitry (102) configured to: determine a voltage drop (114a / b) during a discharge event or a voltage rise (116a / b) during a charging event for at least a first subset (106) and a second subset (107) of the multiple of the electrical energy storage cells (110), determine that the voltage drop (114a) for the first subset (106) of the electrical energy storage cells during the discharge event is larger than the voltage drop (114b) of the second subset (107) of electrical energy storage cells of the multiple electrical energy storage cells or that the voltage rise (116a) for the first subset (106) of the electrical energy storage cells (110) during the charging event is larger than the voltage rise (116b) of second subset (107) of multiple electrical energy storage cells, determine that the voltage of the first subset (106) of electrical energy storage cells converges with the voltage of the second subset (107) of electrical energy storage cells, and provide an output (120) that the first subset of electrical energy storage cells has an intermittent connection (113) to a voltage link (109a).

The invention discloses a piezoelectric energy acquisition circuit based on a parallel synchronous switch inductor, which comprises n piezoelectric transducers, n rectification circuits, n peak detection modules, an inductor, a first diode and an energy storage capacitor, and is characterized in that each piezoelectric transducer acquires vibration energy, converts the vibration energy into alternating voltage and outputs the alternating voltage; each rectifying circuit rectifies alternating current voltage into direct current voltage to be output, the first diode prevents load current from flowing back, the energy storage capacitor is used for storing electric energy and supplying power to a load, and a one-way conduction circuit, a switching circuit and a detection device are arranged in each peak value detection module; the detection device of each peak detection module can be connected in parallel with the inductor through the switching circuit of the detection device; the piezoelectric transducer has the advantages that only the positive half-cycle peak value of the output voltage of the piezoelectric transducer needs to be detected, the number of components needed by the peak value detection module is small, the overall circuit size is reduced, the cost is reduced, inductors can be shared at the same time during expansion, a time division multiplexing mode does not need to be adopted, and the expansion performance is high.

Method for driver assistance in a motor vehicle (1) that is at least partially electrically powered, comprising an electrical energy storage device (2) for powering the motor vehicle (1) and a vehicle-side charging interface (3), wherein the energy storage device (2) can be charged via the charging interface (3) by a charging station (6) outside the motor vehicle (1), wherein a vehicle-side processing device (4) is used to: Vehicle position data (FP), which represent the geographic position of the motor vehicle (1), are acquired via satellite-based positioning; access is made to charging station position data (LP), which represents the geographic positions of a large number of charging stations (6); Upon fulfillment of a number of criteria (CR), an approach of the motor vehicle (1) to a charging station (6) is detected, wherein a first criterion is a distance criterion (AC), which is fulfilled when the geographical position of the motor vehicle (1) according to the vehicle position data (FP) is less than or less than a predetermined threshold value (SW) from the geographical position of the charging station (6) according to the charging station position data (LP), and wherein a second criterion is a reverse gear criterion (RC), which is fulfilled when the reverse gear is engaged in the motor vehicle (1); In the event of detection of the approach of the motor vehicle (1) to a charging station (6), an output (TV) is generated at an output unit (5) in the motor vehicle (1), the output (TV) indicating to the driver of the motor vehicle (1) the location of the charging interface (3) on the motor vehicle (1).