2350 results about "Supercapacitor" 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 provides a graphene super-capacitor capacity energy-saving control method based on an intelligent algorithm, and the method comprises the steps: obtaining the harmonic content data of a power grid, carrying out the spectrum analysis of the harmonic content through a Fourier transform algorithm, and obtaining the change trend of the harmonic content; acquiring historical capacitor bank impedance characteristic data and a corresponding harmonic content change trend, and calculating impedance matching degrees of the graphene super capacitor under different load conditions; according to the impedance matching degree of the graphene super capacitor, generating a capacitor bank switching sequence by adopting a dynamic programming algorithm, and determining a target switching sequence of the graphene super capacitor; switching of the graphene super capacitor according to the target switching sequence is executed through an edge calculation unit, the access state of the graphene super capacitor is adjusted in real time, and harmonic wave changes of a power grid are dynamically matched; the method comprises the following steps: acquiring transient current data of a system, and decomposing the transient current data by adopting a wavelet transform algorithm to obtain a frequency component of transient current;

The invention relates to the technical field of ship power systems, and discloses a ship comprehensive power system based on composite energy storage, comprising an energy generation module which comprises a diesel generator, a gas turbine and a renewable energy sub-module and is used for generating electric energy; the energy storage management module comprises a lithium battery, a super capacitor and a flywheel energy storage system and is used for storing and releasing electric energy; the energy distribution and scheduling module is used for controlling energy distribution between the energy generation module and the energy storage management module; the load management module is used for adjusting the load power requirement according to the load priority; and the health management and fault monitoring module is used for monitoring the operation states of the energy storage management module and the system in real time. Through cooperative work of multiple energy storage units and combination with optimization control of the energy distribution and scheduling module, characteristics of different energy storage devices are fully exerted. Therefore, loss in the energy conversion process is remarkably reduced, distribution and utilization of electric energy are optimized, and the overall energy utilization efficiency of the system is improved by about 15%-20%.

The invention provides a power grid frequency modulation power energy coordination control method and system based on a super capacitor, and relates to the technical field of power grid frequency modulation, and the method comprises the steps: carrying out the time-frequency analysis of a collected power grid frequency signal, obtaining a frequency disturbance characteristic value, and determining power control data through combining with an electrical parameter value of a super capacitor group; and performing nonlinear programming calculation based on the power control data to obtain a power distribution sequence, dividing the power distribution sequence into a quick response section, a dynamic transition section and a steady state maintenance section according to a preset threshold value, and solving a control value by adopting an augmented Lagrange equation, recursive least square operation and a Lyapunov function respectively. Obtaining a power control instruction; and inputting a power control instruction into the disturbance observer, calculating a dynamic error value, constructing a nonsingular terminal equation, and outputting a power regulation signal in combination with recursive minimum entropy calculation and a superhelix algorithm.

The invention provides an elevator energy recovery application method and system based on a super capacitor, and relates to the technical field of energy recovery, and the method comprises the steps: collecting elevator operation data and super capacitor state data, constructing a state space and an action space, and constructing a reward function according to peak-valley electricity price economic benefits, super capacitor life loss and energy utilization efficiency; training a deep reinforcement learning model based on the double-Q network to obtain an energy recovery optimization strategy; when the elevator is braked, regenerative braking energy is stored in the super capacitor; when the elevator is driven, the stored energy is released for traction; the optimal storage allocation scheme of the multiple elevator rooms is calculated through the virtual energy storage unit, hierarchical control is implemented based on an optimization strategy and the allocation scheme, the upper layer adopts fuzzy self-adaptive weight to determine the energy storage priority, and the lower layer adopts a distributed algorithm to calculate the energy allocation coefficient and the target power; and the charge-discharge rate is updated according to the health state of the supercapacitor.

The invention provides an intelligent management method and system for photovoltaic energy storage equipment, and the method comprises the steps: analyzing the power fluctuation trend through monitoring the output power and environment parameters of the photovoltaic energy storage equipment in real time, and pre-judging the power fluctuation characteristics; according to the operation state parameters of the supercapacitor and the vanadium redox flow battery and the power fluctuation pre-judgment result, the power distribution proportion and the cooperative working mode of the energy storage element are determined; based on industrial load demand characteristics, an energy storage element is controlled to be flexibly switched between an active adjustment mode and a reactive compensation mode; and voltage regulation and harmonic compensation are realized by monitoring electric energy quality indexes of parallel connection points. According to the invention, the rapid response capability of the photovoltaic energy storage system to the industrial load can be effectively improved, the power supply stability and the electric energy quality are remarkably improved, the system power fluctuation is reduced, the utilization efficiency of the energy storage equipment is improved, and reliable clean energy support is provided for industrial users.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes an energy controller that tracks historical power draw from the plurality of energy storage units over time in power tracking data, and that identifies a power draw based on the power tracking data. The energy controller switches between a first configuration and a second configuration based on the identified power draw. The first configuration is configured for drawing power from the electrochemical battery and disconnecting from the supercapacitor, while wherein the second configuration is configured for drawing power from the supercapacitor and disconnecting from the electrochemical battery.

The invention discloses a charging and discharging control method and device for an elevator energy storage system, a medium and a product, and relates to the field of data processing. The method comprises the steps that real-time operation data such as the position and the load capacity of an elevator car are obtained, and the instantaneous power generation power and the power change rate of a traction machine are determined accordingly; determining a power change predicted value in a future preset time period based on the parameters, and obtaining the total amount of power generation energy required to be stored by the energy storage system through zero setting of a positive value, integral operation and efficiency compensation; according to the power change rate, the state of the energy storage unit and the power grid electricity price time period, the charging and discharging priorities fed back by the super capacitor, the lithium battery and the power grid are determined; controlling the bidirectional DC / DC circuit to switch charging and discharging modes according to the priority, and adjusting the PWM duty ratio of the brake resistor; and based on the charging and discharging mode and the duty ratio, charging and discharging control over the elevator energy storage system is achieved. According to the method, the problem of inaccurate real-time matching of the dynamic load and the energy fluctuation of the current elevator energy storage system can be relieved.

The invention discloses a preparation method of a degradable transparent conductive polymer film, and belongs to the technical field of film preparation. Preparing dispersion liquid I through graphene oxide quantum dots; preparing a dispersion liquid II from polyaniline nanofibers; dissolving pyrrole and toluenesulfonic acid in N, N-dimethylformamide to prepare a reaction solution, adding the dispersion liquid I and the dispersion liquid II, stirring, and adding ferric chloride hexahydrate to obtain a reaction solution; adjusting the pH value of the reaction solution to 1.5, and heating to obtain a polypyrrole solution; preparing cellulose acetate, polyvinyl alcohol and N, N-dimethylformamide to obtain a cellulose acetate solution; mixing the polypyrrole solution and the cellulose acetate solution, adding glutaraldehyde to obtain a mixed solution, and pouring the mixed solution into a mold to prepare a composite wet film; and putting the composite wet film into a hot-pressing forming machine for hot-pressing to generate the polymer film. The conductive polymer film prepared by the invention can be applied to the fields of supercapacitor electrode materials, electromagnetic shielding materials, flexible sensors and the like, and provides a new high-performance material choice for the development of related fields.

The invention relates to the technical field of supercapacitors, and provides a cement-based supercapacitor, a preparation method and application. The cement-based supercapacitor comprises a cement-based electrolyte and two structural electrodes arranged on the two sides of the cement-based electrolyte. The cement-based electrolyte is prepared from cement, alkali, alkali metal salt, water and an additive, wherein the alkali metal salt comprises lithium salt; each structural electrode is composed of foamed nickel loaded with nitrogen-doped reduced graphene oxide. The lithium salt is added to construct an efficient ionic conductive network, so that the ionic conductivity of the cement-based electrolyte is enhanced, and the electrochemical performance is obviously improved. The reduced graphene oxide in the structural electrode is doped with nitrogen to enhance the electrostatic force between ions and the surface of the electrode, so that the electrochemical stability of the surface of the electrode is improved, and self-discharge is effectively inhibited. By improving an electrolyte and a structural electrode material, a cement-based supercapacitor with specific capacitance and mechanical properties is obtained and is combined with a building structure to realize building energy storage.

The invention belongs to the technical field of photovoltaic energy storage, and discloses a livestock farm photovoltaic power generation and energy storage combined control system and method, and the method comprises the steps that a converter group converts direct current generated by a photovoltaic cell panel group into voltage and current suitable for a storage battery group and a supercapacitor group; the data analysis module monitors the running state of the system in real time through a data analysis algorithm; the super capacitor bank is responsible for providing instantaneous power support; the inverter converts the direct current into alternating current; the power grid connection mechanism merges electric energy generated by the photovoltaic power generation system into a power grid, charging or discharging management is performed on the storage battery pack according to actual needs, the control mechanism is combined to monitor the system operation state in real time, and the control strategy module sets an operation strategy according to the actual needs. The running state of the system is monitored in real time through the combined control mechanism, working parameters of all assemblies are adjusted, and stable running of the system and efficient utilization of solar energy resources are ensured; the system can intelligently control the charging and discharging process and the grid connection process.

The invention discloses a super capacitor energy scheduling method and system based on multi-time scale collaboration, and relates to the technical field of capacitor energy scheduling, and the method comprises the steps: calling a super capacitor energy scheduling log, and carrying out the division according to a time resolution hierarchy, and obtaining a plurality of time hierarchies; receiving a power grid dispatching instruction, performing power analysis on the load prediction data, and drawing a power reference curve of the super capacitor; dynamically correcting the power reference curve to generate a fluctuation stabilizing instruction; obtaining instantaneous charging and discharging control parameters of the super capacitor; and carrying out multi-time scale collaborative fusion, generating an energy scheduling instruction, carrying out scheduling verification, and determining an energy scheduling optimization instruction. According to the method, the technical problems of low scheduling efficiency and poor power grid stability caused by lack of multi-time scale collaborative analysis and difficulty in dynamically adapting to power grid fluctuation of super-capacitor energy scheduling in the prior art are solved, and the technical effects of improving the super-capacitor energy scheduling efficiency and the power grid operation stability are achieved.

A system for powering an electric vehicle includes at least one electrochemical battery, at least one supercapacitor battery, a first relay disposed on a first electrical path between the at least one electrochemical battery and the electric vehicle, the first relay to connect or disconnect the at least one electrochemical battery to or from the electric vehicle, and a second relay disposed on a second electrical path between the at least one supercapacitor battery and the electric vehicle, the second relay to connect or disconnect the at least one supercapacitor battery to or from the electric vehicle. The system also includes a processor communicatively coupled to first and second relays, wherein the processor, responsive to a first condition, disconnects the at least one electrochemical battery from the electric vehicle via the first relay and connects the at least one supercapacitor battery to the electric vehicle via the second relay.

The invention provides a power grid frequency modulation method and device based on MMC bridge arm capacitor multiplexing, and relates to the technical field of power grid frequency control. In order to solve the problem of functional conflict between participation of an MMC bridge arm capacitor in power grid frequency control and voltage stabilization and filtering, full-bridge multiplexing transformation is carried out on an MMC bridge arm sub-module, the MMC power throughput capacity is enhanced in a parallel super capacitor mode, regulation and control of the bridge arm capacitor on voltage fluctuation are enhanced, and meanwhile, the supporting capacity on the power grid frequency is improved; by simulating frequency characteristics of a synchronous machine, a principle and a method for the MMC to participate in power grid frequency support are analyzed, a power grid frequency modulation model for the MMC to participate in the MTDC system is constructed, and a power grid frequency modulation method for the MMC to participate in the MTDC system is optimized; the frequency deviation generated when the active power of the power grid and the load demand are unbalanced is used as frequency modulation model input, and a corresponding frequency modulation strategy is adopted based on the frequency modulation demand of the MTDC system. According to the invention, reasonable distribution of power required by frequency modulation can be realized, and the comprehensive stability characteristic of a novel power system is improved.

The invention discloses a cement-based structure supercapacitor and a wall energy storage system, and relates to the technical field of energy storage. Wherein the cement-based structure super capacitor comprises a capacitor positive electrode, a capacitor negative electrode and a cement-based solid electrolyte; the capacitor positive electrode and the capacitor negative electrode are made of carbon nanomaterials; the cement-based solid electrolyte comprises cement, a conductive additive and a transition metal oxide; the cement-based solid electrolyte is arranged between the capacitor positive electrode and the capacitor negative electrode. According to the technical scheme, the energy storage performance of the super capacitor with the cement-based structure can be improved.

The invention discloses a fuel cell hybrid electric heavy truck power source optimization design method and system, and the method comprises the steps: building a target function of the total cost per unit travelled distance in a life cycle based on the basic parameters of a fuel cell, a power cell and a super capacitor, and the degradation parameters and hydrogen consumption of the fuel cell and the power cell; an energy management strategy of the fuel cell hybrid electric heavy truck is established based on the average required power of the truck and the SOC of the power cell and the super capacitor; and a cancer cell competition and transfer algorithm is adopted, under an energy management strategy, a minimum objective function meeting the driving working condition is searched, and energy size optimization is completed. According to the method, the power source of the fuel cell hybrid electric heavy truck is subjected to global optimization design by adopting the cancer cell competition and transfer algorithm, the service life of the power source is prolonged while the power performance of the truck is guaranteed, the manufacturing cost, degradation cost and hydrogen consumption of a hybrid power system are remarkably reduced, and the energy efficiency of the system is improved.

An electrode including a substrate, a binding compound, and a composite. The composite includes jute-activated carbon and a nickel-cobalt-layered double hydroxide (NiCoLDH). Particles of the NiCoLDH are in the form of nanoflowers with an average size of 5-15 μm. The nanoflowers comprise nanosheets with an average thickness of 5-20 nm. The particles of the jute-activated carbon are in the form of interconnected nanosheets, which form a porous carbon framework. The porous carbon framework connects the nanoflowers, thereby forming an interconnected structure in the composite. A mixture of the composite and the binding compound is coated on the surface of the substrate. The electrode can be included in supercapacitors and power banks.

The invention discloses a method for preparing a supercapacitor electrode through high-temperature alkali activation. The method comprises the steps of preparing porous carbon, preparing an electrode plate, preparing a supercapacitor, and carrying out electrochemical performance testing and material characterization testing. When the carbon precursor of the supercapacitor electrode material is prepared, organic components in walnut shells can be refined and removed and biochar is left by utilizing the effect of removing organic matters in biomass at high temperature of a tubular furnace; the potassium hydroxide with different concentrations is used as the activating agent to activate the biochar, the porosity and the internal structure richness of the porous carbon can be greatly improved, and compared with traditional solid alkali activation, the aqueous solution alkali activation has the advantages that the reliability and the possibility are improved, and the contact area of the activating agent and substances is increased. The electrode material prepared by the method has the advantages of low manufacturing cost, small environmental pollution and excellent service life, and is an ideal electrode material.

The invention relates to an active power distribution network energy storage optimization configuration method based on a DeepAR model and reinforcement learning. According to the method, historical load and power generation data are collected, future load is predicted by using a DeepAR model after preprocessing, a cost model is established by combining established charging and discharging characteristic models of a lithium battery and a super capacitor and considering energy power purchase cost and energy storage loss, and various constraint conditions are determined. And then an optimal energy storage charging and discharging strategy is determined through iterative training by using a state representation network, an action value network and a target network in the deep Q network, so that energy scheduling is optimized in a long time, and the cost is minimized. According to the method, load prediction, energy storage characteristics, power cost and constraint conditions are fully considered, the global optimization strategy is determined by applying the deep reinforcement learning algorithm, and the economic benefit of the power distribution network energy storage system can be improved.

The invention provides a coordination control method and device of a photovoltaic energy storage inverter for automobile charging based on artificial intelligence, and belongs to the technical field of automobile photovoltaic energy storage coordination control, and the method comprises the steps: monitoring the output power of a photovoltaic array, the state of charge (SOC) of an energy storage system, the state of a power grid and the power demand of a load in real time; a reinforcement learning algorithm is introduced, weather forecast and historical load data are combined, photovoltaic output and load demands in a future time period are predicted, and a power distribution instruction is generated; deciding a current operation mode and generating a mode switching instruction; seamless switching between grid connection and grid disconnection is controlled, and after switching is completed, the charging and discharging proportion of the lithium battery and the super capacitor is coordinated; integrating the energy storage real-time state and the power distribution instruction, and optimizing and adjusting the control parameters of the inverter in real time; continuously monitoring a running state and a switching process, and starting a standby mode when a fault is detected; and the data is uploaded to a monitoring platform. The system operation is efficiently optimized, the service life is prolonged, and stability is guaranteed.

A communication device is configured for use in a communication network. The communication device is configured to set a maximum output power based on a metric reflecting an amount of energy stored in an energy storage of the communication device, e.g., an amount of harvested energy stored in a supercapacitor. The communication device is also configured to perform one or more transmissions according to the maximum output power.

The invention discloses a bionic bimodal hydrogel-based triboelectricity-super-capacitance sensor and a preparation method of the bionic bimodal hydrogel-based triboelectricity-super-capacitance sensor. A hydrogel-based sensor high-charge sensitive layer is used as a triboelectric layer, a flexible hydrogel-based high-conductivity hydrogel electrode layer is used as an upper electrode layer, a hydrogel-based sensor elastic spacing layer, a hydrogel-based sensor dielectric layer is used as an ion conductive layer, and the flexible hydrogel-based high-conductivity hydrogel electrode layer is used as a lower electrode layer. An integrated multi-layer device structure is stacked from top to bottom; a silver wire is led out from each of the two layers of flexible hydrogel-based high-conductivity hydrogel electrodes, and the bionic bimodal hydrogel-based triboelectricity-super-capacitance sensor is obtained. The sensor integrates two sensing mechanisms of triboelectricity and a super capacitor, can detect dynamic and static pressure at the same time, has the advantages of high sensitivity, wide detection range, quick response and the like, and is expected to be widely applied to the fields of human-computer interaction, robot sensing and the like.

The invention provides an abnormal power failure diagnosis method and device, and relates to the technical field of power failure diagnosis, the device comprises an MCU, the MCU is connected with a selection switch through a line, and one end of the selection switch is provided with a capacitor. Hardware hidden dangers can be eliminated at the beginning of power-on through hardware self-inspection in the system pre-starting stage, and it is guaranteed that operation baselines of the whole delay power supply module and the MCU are correct; according to the following capacitor energy charging function, a super capacitor is connected in parallel to the 12V low-voltage power supply side, and the charging current and voltage slope are monitored in real time, so that even if the capacitor stably and safely stores enough energy, overcharge damage is prevented, and monitoring is interrupted by data heartbeat of an MCU and a BMS master controller and power-down cmd, it is ensured that the system can sense a power-off instruction in time at any time, and the power-off state of the system is ensured to be stable and reliable. And persistent storage of the key operation parameters is completed in an atomicity write-in mode, so that the data loss risk caused by communication timeout or software faults is greatly reduced.

The invention belongs to the technical field of capacitor carbon preparation, and particularly relates to coal tar-based capacitor carbon and a preparation method and application thereof. Comprising the following steps: by taking coal tar as a carbon source, carrying out Friedel-Crafts reaction under the action of a cross-linking agent and a catalyst to obtain a tar-based cross-linked polymer; and carbonizing the tar-based cross-linked polymer at 600-900 DEG C in a protective gas atmosphere to obtain the coal tar-based capacitor carbon. The coal tar is used as a carbon source, the coal tar is subjected to Friedel-Crafts reaction to obtain the coal tar-based hypercrosslinked polymer, the hypercrosslinked polymer can be directly subjected to one-step high-temperature carbonization without any activating agent to obtain the high-performance coal tar-based capacitor carbon, the method is simple, the cost is low, the carbon yield is high, and the method is suitable for industrial production. The prepared capacitor carbon has a high specific surface area, abundant micropores and a disordered structure, is applied to a supercapacitor as an electrode material, and shows excellent electrochemical performance and stability.

A system for powering an electric vehicle includes at least one electrochemical battery, at least one supercapacitor battery, a first relay disposed on a first electrical path between the at least one electrochemical battery and the electric vehicle, the first relay to connect or disconnect the at least one electrochemical battery to or from the electric vehicle, and a second relay disposed on a second electrical path between the at least one supercapacitor battery and the electric vehicle, the second relay to connect or disconnect the at least one supercapacitor battery to or from the electric vehicle. The system also includes a processor communicatively coupled to first and second relays, wherein the processor, responsive to a first condition, disconnects the at least one electrochemical battery from the electric vehicle via the first relay and connects the at least one supercapacitor battery to the electric vehicle via the second relay.

A supercapacitor including a negative electrode, a positive electrode, an electrolyte, and a separator. The separator is between the negative electrode and the positive electrode, and the electrolyte is present in and on the separator. The negative electrode and the positive electrode include a carbon material selected from a poly-anthraquinone sulfide activated carbon material and a poly-anthraquinone sulfide reduced activated carbon material.

The present invention relates to a flexible iron aluminate cement-based supercapacitor and a preparation method thereof. The flexible iron aluminate cement-based supercapacitor is assembled with rGO / Ni as the positive electrode, rGO@α-Fe2O3 spindle / Ni as the negative electrode, and polyacrylamide-cement-emulsion-latex powder-water-KOH as the flexible cement-based solid electrolyte. Compared with the prior art, the flexible energy storage cement-based material, as a new type of building material integrating structure / function, realizes the integration of flexible lightweight design and functional technology. Its flexible characteristics can closely fit complex-shaped buildings and have good adaptability to special-shaped curved building structures. At the same time, a non-destructive construction process can also be adopted, and the energy storage function can be imparted to the existing structure by an external pasting method, so that the energy storage function can be imparted without structural reconstruction.

A nanocomposite electrode and a supercapacitor device including said nanocomposite electrode. The nanocomposite electrode includes a mixture of at least one binding compound, at least one conductive additive, and at least one molybdenum doped carbon material coated onto a substrate. The supercapacitor device includes two nanocomposite electrodes disposed facing one another, wherein the substrate of each nanocomposite electrode is coated with the mixture on an inside facing surface and the outer surfaces of the nanocomposite electrodes are not coated with the mixture, and the inside facing surfaces are separated by at least one electrolyte.

A vehicle battery jump starter that is powered by a removable and rechargeable battery pack, such as a battery pack used with various hand-held power tools. The battery pack removably connects to a vehicle battery jump starter and can be selectively used to charge a power boost module within the vehicle battery jump starter. The power boost module includes, for example, a plurality of supercapacitors or lithium polymer battery cells. The power boost module in combination with the battery pack 100 are used to jump start a vehicle battery. The vehicle battery jump starter includes a charge control circuit configured to control charging of the power boost module based upon battery information obtained from the battery pack.

The invention belongs to the technical field of supercapacitor materials, and particularly relates to a coal-based porous carbon material and a preparation method and application thereof. In order to solve the problems of safety, batch stability and easy formation of a pore structure in a process for preparing porous carbon from coal, the method comprises the following steps: firstly, carrying out mixing and kneading treatment on fine-particle raw material coal and a liquid-phase doping agent, and then carrying out drying-low-carbon integrated treatment on the mixture; then activating the low-carbon material at a high temperature by means of water vapor, and then performing refined pore-forming on the cavity structure at a high temperature by means of carbon dioxide gas; after the activation reaction is finished, carrying out impurity removal treatment on the activated material with the high specific surface area by virtue of an acid-base solution; and depositing a layer of organic polymer on the surface of the purified material by adopting an atomic layer deposition technology, and forming a passivation layer on the polymer layer by virtue of high-temperature treatment, thereby obtaining the coal-based porous carbon material with stable performance and structure, and further applying the coal-based porous carbon material to the negative pole piece of the supercapacitor.