41results about How to "Improve energy storage utilization" patented technology

The invention relates to the technical field of solar energy thermal power generation and discloses a tower-typed solar energy thermal power generation system with two-stage thermal storage. The system at least comprises a photo-thermal conversion subsystem, a two-stage thermal storage subsystem and a power subsystem; wherein, the photo-thermal conversion subsystem is used for receiving and converging solar radiation energy, converting the received solar radiation energy into heat energy, and transmitting the heat energy to the power subsystem or the two-stage thermal storage subsystem; the two-stage thermal storage subsystem is used for storing the heat energy input by the photo-thermal conversion subsystem and providing the heat energy for the power subsystem when the solar radiation energy is not enough; the power subsystem is used for converting the received heat energy into electrical energy and outputting the electrical energy. By adopting the invention, the problem that the steam is difficult to store is solved, and the difficulty that the running of a steam turbine in the previous tower-typed solar energy thermal power generation proposal by taking the steam as heat absorption working substance is influenced by the unstable and discontinuous solar radiation is overcome.

The invention relates to a setting phase change energy storage material with high-thermal conductivity and a preparation method thereof, belonging to the field of phase change heat storage materials. The setting phase change energy storage material with high-thermal conductivity is characterized by containing 65-90 percent by mass of paraffin substances as a phase-change material, 9-34 percent by mass of high-density polyethylene as a support material and 1-7 percent by mass of expanded graphite as a heat conduction intensifier; a method for adding a proper amount of expanded graphite to paraffin/high-density polyethylene in a molten state is adopted to enable the heat conductivity of the setting phase change material to be increased to 1.35W/(m.K) or higher. The method comprises the following steps of: heating to melt the paraffin substances with the mass percent of 65-90 percent, and heating to enable the temperature of the liquid paraffin to reach 120-190 DEG C; adding high-density polyethylene with the mass percent of 9-34 percent and the expanded graphite with the mass percent of 1-7 percent to the liquid paraffin, and then melting and evenly stirring in vacuum; putting the mixture in a hot mould for pressing and molding; taking the mixture from the mould after naturally cooling. The setting phase change material has high thermal conductivity, does not need to be packaged in containers and can directly contact heat-transfer media.

The invention discloses a polymer solid-solid phase transition energy storage material. The material consists of the following materials by mass percentage: 60 to 95 percent of phase transition main material and 5 to 40 percent of frame material, wherein the phase transition main material is made of high density polyethylene or polyethyleneglycol; and the frame material is made of active carbon fibers. After the phase transition main material and the frame material are dryly mixed, the mixture is placed in an extruder for granulating to obtain granules, and the temperature in a granulating process is controlled at 100 to 190 DEG C; and the produced granules are placed in the extruder to be granulated for 4 to 6 times to produce the polymer solid-solid phase transition energy storage material. The phase transition energy storage material has high enthalpy value of phase transition, good energy storage performance, good thermal stability, high chemical stability and stable shape in the phase transition process, and has application prospect in multiple technical fields, such as solar energy storage, energy utilization and conversion, waste cold and waste heat utilization and the like.

The invention provides a hybrid energy storage photovoltaic power generation system based on a power prediction method. The hybrid energy storage photovoltaic power generation system based on the power prediction method comprises an energy storage unit and an inverter, wherein the energy storage unit and the inverter are connected with an energy storage controller. The energy storage controller comprises a control module, a photovoltaic power prediction module and a DC-DC power module; the control module is used for adjusting the operating mode of the energy storage unit; the photovoltaic power prediction module is used for predicting photovoltaic power generation power according to output power of a photovoltaic battery in the system and sending a power prediction value to the inverter. Compared with the prior art, the hybrid energy storage photovoltaic power generation system based on the power prediction method can reduce the capacity of the energy storage unit and improve the utilization rate of stored energy; due to the fact that the energy storage unit does not need to be started frequently to compensate the power difference between the photovoltaic battery and the inverter, the service life of the energy storage unit is prolonged; an inverter output curve is smoothed, and therefore the impact on a power grid is reduced.

The embodiment of the invention provides an optical storage micro grid system for realizing energy storage capacity dynamic optimization. According to the power output data of photovoltaic power predication and the requirement data of load power predication, a set algorithm is employed by an energy storage capacity dynamic optimization module to calculate the proportional value between emergency power backup capacity and smooth fluctuation capacity, and the proportional value is transmitted to an energy storage battery management system through a DSP control module. The energy storage battery management system adjusts the emergency power reserve capacity and smooth fluctuation capacity in an energy storage battery, and thus the proportion between emergency power backup capacity and the smooth fluctuation capacity is in accordance with the proportional value after the adjustment. According to the embodiment of the invention, the energy storage capacity of the optical storage micro grid system can be dynamically optimized, the energy storage utilization rate of the optical storage micro grid system can be raised, under the premise of ensuring emergency power supply, the power fluctuation of a grid-connected point is inhibited to the maximum, and the utilization of renewable energy, energy saving and loss reduction are facilitated.

The invention relates to a steam recovery type traditional Chinese medicine decocting barrel. The barrel can comprises a barrel body and an outer sleeve, a heat storage cavity is formed between the outer sleeve and the barrel body, a communicating hole communicated with the heat storage cavity is formed in the side wall of the barrel body, the inner surface of the top wall of the heat storage cavity is rotationally connected with an annular air distribution cavity in a sealed mode, a push plate connected to the annular air distribution cavity is arranged in the heat storage cavity, air outletholes are formed in the surface of one side of the push plate, the air outlet holes are communicated with the annular air distribution cavity through an air channel positioned in a suspension plate, asteam outlet hole is formed in the top wall of the barrel body, the steam outlet hole is connected with the inlet end of an air pump, the outlet end of the air pump is rotatably sleeved with a rotarycover in a sealed mode, the rotary cover is communicated with the annular air distribution cavity through an exhaust pipe, and the opening direction of the steam outlet hole is perpendicular to the radial direction of the heat storage cavity. The barrel and the method have the advantages of improvement of the heat utilization rate and no loss of steam, and solve the problems of heat loss and medicine smell loss caused by steam loss in the existing medicine decocting process.

The invention discloses an asynchronous compensation pressure equalization device for a vehicle-mounted super capacitor, and a control method. The device comprises a DC (Direct Current)/AC (Alternating Current) unit, a synchronous rectification unit, a super capacitance block unit, a voltage and current collection unit and a control unit. The control method comprises the following steps that: thecontrol unit establishes the state space model of each super capacitor unit and a corresponding slip form observer model, and on the basis of data measured offline and data collected by the voltage and current collection unit in real, the slip form observer is adopted to estimate the internal voltage value of each super capacitor unit; the control unit judges whether voltage balance needs to be carried out or not according to the internal voltage value of each super capacitor unit and a voltage threshold value, a corresponding controlled quantity is output to the synchronous rectification unit, the state of a driving switch in the synchronous rectification unit is controlled to control the corresponding super capacitor units to charge and discharge so as to realize voltage balance. The device has the advantages of good voltage balance effect and high efficiency.

The invention discloses a parking lot. The parking lot comprises parking spaces, a movable charging robot and a robot management system. The charging robot comprises a robot body, a travelling mechanism, an energy storage component and a control unit, wherein the travelling mechanism is used for driving the robot body to the electric vehicle parking position, the energy storage component is used for storing electric energy and charging an electric vehicle, and the control unit is used for receiving a control instruction and controlling travelling operation of the travelling mechanism and discharging of storage battery packs according to the control instruction so as to accomplish charging of the appointed electric vehicle. The control unit comprises a battery management unit. According to the parking lot, the movable charging robot conducts management on the energy storage component through the battery management unit, energy storage units with the hidden danger are isolated from normal units, and safety accidents are avoided; the energy storage units are controlled to charge the electric vehicle in turn, and therefore the service life of batteries can be prolonged, faults of the batteries can be conveniently monitored, and the utilization of the energy storage component can be improved.

The invention discloses a parking lot. The parking lot comprises parking spaces, a movable charging robot and a robot management system. The charging robot comprises a robot body, a travelling mechanism, an energy storage component and a control unit, wherein the travelling mechanism is used for driving the robot body to the electric vehicle parking position, the energy storage component is used for storing electric energy and charging an electric vehicle, and the control unit is used for receiving a control instruction and controlling travelling operation of the travelling mechanism and discharging of storage battery packs according to the control instruction so as to accomplish charging of the appointed electric vehicle. The control unit comprises a battery management unit and a billing settlement unit. According to the parking lot, the movable charging robot conducts management on the energy storage component through the battery management unit, energy storage units with the hidden danger are isolated from normal units, safety accidents are avoided, and charging efficiency is improved.

The invention relates to a steam recovery type traditional Chinese medicine decocting barrel which comprises a barrel body and an outer sleeve, wherein a heat accumulation cavity is formed between theouter sleeve and the barrel body; communicating holes communicating with the heat accumulation cavity are formed in the side wall of the barrel body; an annular air distribution cavity is rotatably connected onto the inner surface of the top wall of the heat accumulation cavity in a sealed way; push plates connected onto the annular air distribution cavity are arranged in the heat accumulation cavity; air outlet holes are formed in the surface of one side of the push plate; the air outlet holes communicate with the annular air distribution cavity through an air passage positioned inside in ahanging plate; a steam outlet hole is formed in the top wall of the barrel body, and is connected with the inlet end of an air pump; the outlet end of the air pump is rotatably provided with a rotating cover in a sealed and sleeved way; the rotating cover communicates with the annular air distribution cavity through an exhaust pipe; and the opening direction of the air outlet holes is perpendicular to the radial direction of the heat accumulation cavity. The steam recovery type traditional Chinese medicine decocting barrel has the advantages that the heat utilization rate can be improved, andsteam cannot be lost. The problems of heat loss and medicine smell loss caused by steam loss in the existing medicine decocting process are solved.

The invention discloses a compressed air stored energy power generating system based on liquid pistons. The system comprises the first liquid piston, the second liquid piston, a low-pressure gas pipeline, a high-pressure gas pipeline, a high-pressure gas storage tank, a power generator, a first water pump, a second water pump, a water source, a heating device, a cooling device and a control device. The two liquid piston devices, the low-pressure gas pipeline, the high-pressure gas pipeline and the power generator are arranged, air is compressed and expanded in the liquid pistons, potential energy of compressed air is fully utilized, the loss is lowered, and the stored energy utilization rate is high; temperature sensors and liquid storage plates are arranged in the liquid pistons, the cooling device is arranged outside the liquid pistons, the temperature in the liquid pistons can be adjusted in the air compression and expansion processes, equipment damage caused by dramatic temperature changes is prevented, and the safety is high; the heating device and the cooling device are arranged for controlling the temperature of the liquid, so that the temperature of gas is controlled, and the automation degree is high; and the temperature adjusting capacity is good, and the stored energy utilization rate is further increased.

The invention relates to a rotary lifting stirring type traditional Chinese medicine decocting barrel which comprises a barrel body and a central stirring shaft, wherein the central stirring shaft isprovided with a threaded section that is in threaded connection with a suspension block so as to suspend the central stirring shaft in the barrel body; the central stirring shaft is connected with a plurality of central stirring shaft part stirring blades positioned in the barrel body; the part, positioned at the upper end of the suspension block, of the central stirring shaft is connected with apower output shaft of a driving motor; the barrel body is further provided with a supporting rod, the supporting rod is provided with a limiting sliding groove extending in the vertical direction, a rotation stopping block connected into the limiting sliding groove in a sliding mode is arranged on a shell of the driving motor, and the supporting rod is provided with an upper limiting and reversingswitch and a lower limiting and reversing switch, which are matched with the rotation stopping block. The medicine decocting device has the advantages that materials can be stirred in the medicine decocting process to promote movement of the materials, and the problem that the medicine decocting efficiency is low due to the fact that existing medicine decocting is static medicine decocting is solved.

The invention relates to the technical field of novel electrode materials, and particularly provides a preparation method of a hierarchical porous carbon cloth material and application of the hierarchical porous carbon cloth material as a supercapacitor electrode. The preparation method of the hierarchical porous carbon cloth material comprises the steps of immersing cleaned carbon cloth into a mixed solution of hexamethylenetetramine, zinc nitrate hexahydrate and ammonia water, stirring, then transferring into a reaction kettle for hydrothermal reaction, growing ZnO nanosheets on the surfaceof the carbon cloth, and cleaning and drying the carbon cloth on which the ZnO nanosheets grow; calcining the carbon cloth coated with ZnO nanorods on the surface in a nitrogen atmosphere, cooling toroom temperature, and cleaning with a 3M HCl solution to obtain the hierarchical porous carbon cloth. The surface of the hierarchical porous carbon cloth prepared by the method has a large number of interconnected pore structures, and when the hierarchical porous carbon cloth is used as a supercapacitor electrode, the contact area of the electrode and an electrolyte can be effectively increased, and the ion diffusion rate of the electrode during working is improved, so that the electrochemical performance of an electrode material is improved.

The invention discloses a compressed air energy-storage device based on constant-temperature control. The compressed air energy-storage device comprises a liquid piston, a low-pressure gas pipeline, a high-pressure gas pipeline, a liquid cooling device, a water pump water turbine unit, a temperature sensor, a first water circulating cooling device, a second water circulating cooling device and a controller. The liquid piston, the low-pressure gas pipeline, the high-pressure gas pipeline and the water pump water turbine unit are arranged, so that air is compressed and expanded in the liquid piston, potential energy of compressed air is utilized completely, loss is reduced, and a utilization rate for stored energy is high; the temperature sensor, liquid storage plates, a plurality of layers of fillers and the liquid cooling device are arranged, so that the temperature in the liquid piston can be regulated in an air compression process and an air expansion process, and therefore, damages, caused by fierce temperature variation, on equipment are prevented, and safety is high; and the rotatable liquid storage plates are arranged, so that liquid storage is carried out when the temperature is high, and gas-liquid heat exchange is realized; and the rotatable liquid storage plates are perpendicular when the temperature is uniform, so that liquid is not stored, degree of automation is high, and gas-liquid heat exchange effect is good.