18 results about "Renewable energy storage" patented technology

The invention discloses a novel ship comprehensive energy system and method integrating organic Rankine cycle waste heat recovery, and belongs to the field of ship comprehensive energy design. The system comprises a dual-fuel engine, a dual-fuel generator set, a fuel cell, a waste heat boiler, a shaft-driven motor, a lithium battery, an electric refrigerator, a heat pump, an organic Rankine cycle, carbon capture equipment, a carbon trading mechanism, mechanical, electric, heat and cold load requirements in the ship operation process and other accessories. According to the system, by optimizing an energy structure (such as renewable energy storage) and a carbon capture means, the economical efficiency is improved, the double-control target of carbon emission is achieved, the compliance requirements of international maritime affair environmental protection laws and regulations are effectively supported, and green and sustainable development of ships is assisted.

The application discloses a kind of wind and light complementary calcium cycle thermochemical energy storage system multi-objective collaborative control method based on AI optimization, it is related to renewable energy storage technical field, the reversible carbonation reaction of calcium-based material (CaO / CaCO3) is used to realize the high-density storage and release of heat energy, the space-time prediction model of wind power, photovoltaic output is constructed by random forest algorithm, and the global optimization of system multi-objective is realized by combining improved particle swarm optimization algorithm.Compared with existing electrochemical energy storage and physical energy storage technology, the calcium cycle thermochemical energy storage of the application has the significant advantages of low energy storage cost, long energy storage time, long cycle life, abundant raw materials and the like.The results show that the annual power generation of the system after optimization reaches 223.67GWh, the cost of electricity per kilowatt-hour is reduced to 0.35 yuan / kWh, the annual carbon emission reduction is 167800 tons, and the investment recovery period is 7.34 years.The application provides an economical and efficient long-time energy storage solution for high-proportion renewable energy grid connection.

The application discloses a coupled inductor super-high gain DC-DC converter, a device and a control method, and belongs to the technical field of renewable energy storage grid connection, wherein the DC-DC converter integrates quadratic structure, switched capacitor, three-winding coupled inductor and voltage multiplication unit technology, realizes super-high voltage gain without relying on extreme duty cycle, and provides three degrees of freedom of flexibly adjustable output voltage; the coupled inductor super-high gain DC-DC conversion device comprises a voltage sampling sensor, a controller, a PWM signal generator and the DC-DC converter; the control method is applied to the DC-DC conversion device. In addition, while obtaining high voltage gain, the DC-DC converter can effectively reduce the voltage stress borne by the switch tube, and is suitable for occasions with high requirements for high voltage conversion performance in a renewable energy power generation system.

The application discloses a method for carbon dioxide hydrogenation driven by renewable energy, which comprises the following steps: a renewable energy power generation device generates power by using renewable energy; the generated electric energy is stored and used by a renewable energy storage device; carbon dioxide collected by a carbon dioxide collecting device and hydrogen obtained by electrolyzing water are introduced into a raw material buffer tank, mixed and then introduced into a micro-reactor hydrogenation device to perform carbon dioxide hydrogenation reaction; reaction products are separated by a three-phase separator to obtain product water as raw material for electrolyzing water; liquid products are introduced into a liquid hydrocarbon separation system to separate C5 + gasoline products; gas products are introduced into a gas separation system to separate unreacted carbon dioxide and hydrogen, lean dry gas, low-carbon olefins and liquefied gas; the unreacted carbon dioxide and hydrogen are recycled to the system.

The invention discloses a multi-structure coupled long-period soil heat storage device, and belongs to the technical field of renewable energy storage. The device comprises a cylindrical soil heat storage body, a short-term heat storage water tank, a high-temperature water distribution and collection system and a low-temperature water distribution and collection system. The soil heat storage body is divided into a central area, a middle ring area and a peripheral area in the radial direction, shallow-layer heat storage wells of a U-shaped pipe structure are arranged in the central area and the middle ring area, middle-deep-layer heat storage wells of a coaxial sleeve pipe structure are arranged in the peripheral area, and the layout with the dense inside and the sparse outside is formed. The high-temperature water distribution and collection system preferentially guides a high-temperature working medium into the heat storage wells in the central area and the peripheral area, and the low-temperature water distribution and collection system guides a low-temperature working medium into the heat storage wells in the middle annular area, so that a high-low-high temperature field gradient is actively constructed underground. According to the structure, the heat shielding effect is formed through the peripheral low-temperature area, the top face heat preservation plate is combined, radial and upward heat losses are effectively restrained, and the cross-seasonal heat storage efficiency is remarkably improved.

This invention discloses a high-hydrogen-density liquid organic hydrogen carrier and its applications, belonging to the field of hydrogen energy storage and utilization technology. The liquid organic hydrogen carrier is a composite system of a functionalized nitrogen-containing heterocyclic compound and a metal-organic framework material supported on a non-precious metal catalyst. The nitrogen-containing heterocyclic framework is connected with electron-donating and electron-withdrawing groups, constructing an intramolecular electron push-pull system. The non-precious metal catalyst is supported inside the pores or on the surface of the metal-organic framework material. Through molecular structure design and catalyst system optimization, this invention achieves a hydrogen storage density of not less than 7.0 wt%, a dehydrogenation onset temperature of not more than 150℃, and a dehydrogenated hydrogen purity of not less than 99.99%, with excellent cycle stability and low catalyst cost. This liquid organic hydrogen carrier can be widely used in renewable energy storage, long-distance hydrogen transportation, vehicle-mounted hydrogen sources, and distributed energy supply systems.

To provide a method for alkalizing or re-alkalizing an electrode active material. [Solution] A method for direct or indirect electrochemical alkalization of an alkali metal-deficient electrochemical active material is described. This method includes either an electrolytic step during the alkalization of the alkali metal-deficient electrochemical active material on an electrode current collector (direct), or during the regeneration of the reducing agent used for alkalization of the electrochemical active material (indirect). In another embodiment, the electrochemical cell or battery as defined herein is for use in portable devices such as mobile phones, cameras, tablets or laptops, electric or hybrid vehicles, or renewable energy storage.

1. The name of the design product: liquid-cooled energy storage module. 2. The use of the design product: the design product is used for renewable energy storage system, industrial and household energy storage. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a data center multi-energy flow optimization control method, system, equipment and medium, and belongs to the technical field of power system energy storage equipment, and the method comprises the steps: collecting solar energy through a photoelectric thermal integrated module, and converting the solar energy into electric energy and heat energy; the electrolytic hydrogen production module is used for receiving electric energy of the photoelectric-thermal integrated module and converting the electric energy into hydrogen energy to be stored; when the electric energy of the photoelectric-thermal integrated module is insufficient, the fuel cell module consumes the stored hydrogen energy to generate power to supplement the load demand, and meanwhile, waste heat is generated; energy flow and power distribution among the photoelectric-thermal integrated module, the electrolytic hydrogen production module, the fuel cell module and the waste heat recovery module are controlled through the central control module. The system has the beneficial effects that a complete renewable energy storage and conversion chain is constructed by integrating the photoelectric-thermal integrated module, the electrolytic hydrogen production module and the fuel cell module, and the problem that the photovoltaic power generation volatility is not matched with the stable load requirement of the data center is effectively solved.

Reconfigurable power converter topologies that may switch between non-isolated Buck-Boost converter and isolated Dual-Active Bridge (DAB) converter or full-bridge converter. The switching may provide for reconfiguring the power converter inputs and outputs to series or parallel connections in accordance with design needs. The implementations of the disclosure may be utilized for electrified transportation renewable energy storage and power grid support.

The invention belongs to the technical field of composite phase change materials, and relates to a low-leakage expanded graphite / sugar alcohol composite phase change heat storage material and a preparation method thereof. The method comprises the following steps: firstly, carrying out surface oxidation modification on expanded graphite by adopting hydrogen peroxide, and then adding a sugar alcohol phase-change material, a water-soluble monomer with double bonds, an initiator, a cross-linking agent and the oxidation modified expanded graphite into deionized water in proportion for solution impregnation; in a water evaporation process, a cross-linked polymer network is formed in gaps of the expanded graphite through in-situ polymerization and cross-linking of a monomer and a cross-linking agent, and sugar alcohol molecules are effectively locked by active groups of the cross-linked polymer network. And finally, performing grinding and compression molding to obtain the composite phase change material. The method is simple and convenient in process, obviously enhances the encapsulation capability of the expanded graphite on sugar alcohol, and greatly reduces the leakage rate of the material after phase change melting. The obtained composite phase change material has low leakage rate and high heat-conducting property, and is suitable for the heat energy storage fields of renewable energy storage, industrial waste heat utilization and the like.

The invention provides a new energy heavy truck charging device and method for energy storage and peak regulation of road area renewable energy, and the device comprises a power transmission module which is used for providing power for a charging module; the energy storage module is used for storing the surplus power generated by the power transmission module and carrying out staggered power peak regulation; the charging module is used for providing a power battery charging service for the new energy heavy truck; the heat management module is used for dissipating heat for the power transmission module, the energy storage module and the charging module, recovering heat and transmitting the heat to the energy storage module for energy storage; and the device controller is used for receiving signals of the power transmission module, the energy storage module, the charging module and the heat management module and feeding back instructions to control the work of each module, so that the device works normally. According to the invention, the new energy heavy truck charging device meets the charging requirement, the load of the grid power direct supply infrastructure is reduced, the dependence on the grid power and the emission are reduced through the energy storage peak regulation of the road area renewable energy, and the system efficiency is improved.

The invention relates to a renewable energy source energy storage technology, and particularly discloses an underwater compressed air energy storage system site selection evaluation method, which comprises the steps of S1, establishing a multi-level dynamic coupling site selection evaluation framework; s2, carrying out candidate region preliminary screening and data acquisition quantification, obtaining candidate regions, and establishing an evaluation matrix for indexes of the candidate regions to obtain a standardized evaluation matrix; s3, performing dynamic simulation and trend analysis; obtaining an offshore wind power-UWCAES coupling efficiency factor of each point in the candidate area; and S4, an entropy weight method is adopted to automatically distribute objective weights of the indexes according to the data dispersion degree, then the importance order of the indexes of all levels is calculated according to an improved fuzzy analytic hierarchy process, subjective weights are obtained, finally, comprehensive weights are calculated according to a dynamic weight distribution rule, and all site selection schemes are scored. The method has the advantages that the comprehensive evaluation of dimensions and the dynamic evaluation of time scales are realized, and the evaluation result is more scientific, foresight and high in decision support value.

The invention discloses a coupling inductor ultrahigh-gain DC-DC converter, a device and a control method, and belongs to the technical field of renewable energy storage grid connection, the DC-DC converter integrates a quadratic structure, a switched capacitor, a three-winding coupling inductor and a voltage-multiplying unit technology, ultrahigh voltage gain is realized without depending on an extreme duty ratio condition, and the DC-DC converter can be applied to the field of energy storage and grid connection of renewable energy sources. Three degrees of freedom capable of flexibly adjusting the output voltage are provided; the coupling inductor ultrahigh gain DC-DC conversion device comprises a voltage sampling sensor, a controller, a PWM signal generator and the DC-DC converter. The control method is applied to the DC-DC conversion device. Besides, the DC-DC converter can effectively reduce the voltage stress borne by the switching tube while obtaining high voltage gain, and is suitable for occasions where a renewable energy power generation system has high requirements on high voltage conversion performance.

The application discloses a kind of renewable energy driven carbon dioxide hydrogenation production aromatic hydrocarbon system and method, belong to clean energy utilization and carbon capture utilization technical field;The system includes renewable energy power generation device, renewable energy storage device, carbon dioxide capture device, electrolytic water hydrogen production device, moving bed reaction device and product separation device;Wherein, moving bed reaction device includes multiple moving bed reactors and dehydrator, carbon dioxide hydrogenation reaction is carried out in multiple steps, after every moving bed reactor is entered dehydrator and is treated, dehydration can improve carbon dioxide conversion rate;The application carries out carbon dioxide hydrogenation reaction under the driving of renewable energy, can produce chemical aromatic hydrocarbon, can reduce the content of CO2 in air, solve greenhouse effect and other environmental problems.

The invention relates to the technical field of renewable energy source storage and conversion, and particularly provides a photovoltaic power generation and reversible solid oxide battery coupled energy system and a multi-mode cooperative operation method, and the core scheme of the invention is that seamless switching of a single RSOC electric pile between an SOEC mode and an SOFC mode is realized through a valve control system; redundant electric energy drives the RSOC to electrolyze water to generate green hydrogen for storage; and in the photovoltaic valley period, the stored hydrogen is used for power generation and energy supply. The system is integrated with a heat recovery unit, waste heat gradient utilization is achieved, and efficiency is improved. The method has the beneficial effects of reducing equipment cost, avoiding starting and stopping thermal cycle, prolonging the service life, realizing stable supply of electric energy peak load shifting, and being capable of being expanded to renewable energy scenes such as wind energy. Through an innovative coupling mechanism, the problems of storage and volatility of renewable energy sources are efficiently solved.

The invention belongs to the technical field of power conversion, and discloses a new energy heavy truck power conversion device for energy storage and peak regulation of road area renewable energy, which comprises a power transmission module, an energy storage module, a power conversion module, a heat management module and a device controller, the power transmission module is used for realizing transmission of electric energy among the battery, the battery swap station and the vehicle; the energy storage module is used for storing and releasing electric energy; the battery replacing module is used for replacing the battery pack; the heat management module is used for ensuring that the battery, the motor and the device controller operate in a preset required temperature range; and the device controller is used for controlling the execution unit of each module to work by receiving the signal of each module and feeding back an instruction. According to the method, the new energy heavy truck battery replacing device can meet the requirement, meanwhile, the load of the grid power direct supply infrastructure can be reduced, the dependence on the grid power is reduced through road area renewable energy storage peak regulation, emission can be reduced, and the system efficiency is improved.

The invention relates to a model selection optimization method and device for a fused salt pump of a high-temperature fused salt heat storage tank, and the method comprises the steps: obtaining the physicochemical property data of fused salt, analyzing the structural parameters of the heat storage tank, and determining the operation condition of a heat storage system; establishing a multi-objective optimization function of the fused salt pump of the high-temperature fused salt heat storage tank by utilizing a pre-established fused salt pump performance calculation model according to optimization objectives of the performance, the operation energy consumption, the equipment cost and the reliability of the fused salt pump of the high-temperature fused salt heat storage tank; according to the constraint condition of the fused salt pump of the high-temperature fused salt heat storage tank, a fused salt pump type selection scheme, meeting the preset optimal condition, of the fused salt pump of the high-temperature fused salt heat storage tank is generated, and according to the fused salt pump type selection scheme, the fused salt pump type selection, meeting the preset optimal condition, of the fused salt pump of the high-temperature fused salt heat storage tank is determined. According to the method, the defects of an existing model selection method are overcome, powerful support is provided for development of the high-temperature molten salt heat storage technology, and the method has wide application prospects in the fields of renewable energy storage, industrial waste heat recovery and the like.