228 results about "Energy conversion devices" patented technology

The present invention belongs to the technical field of building integrated energy. Disclosed is a virtual energy storage-considered double-layer optimization scheduling method for a building integrated energy system, the method comprising: constructing an energy hub-based low-carbon building integrated energy system containing wind-solar energy storage and energy conversion devices; comprehensively analyzing characteristics of loads of the system to improve the demand response capability thereof; further providing a double-layer optimization model containing an upper-layer energy operator pricing layer and a lower-layer building user optimization layer, building virtual energy storage and building user comfort indicators being considered in said model to improve the system scheduling flexibility so as to construct an overall user satisfaction indicator; and finally, solving the double-layer optimization model to optimize device contributes, demand responses and electricity purchasing and selling plans of the building integrated energy system, so as to obtain an optimal scheduling policy. The present invention can finely regulate and control various loads of the building integrated energy system, thus improving the energy utilization efficiency, alleviating the power supply pressure of the system, and achieving the purposes of energy conservation and emission reduction of buildings.

The invention discloses a hydrogen energy park planning method and system based on a heuristic algorithm, and relates to the technical field of smart energy management, and the method comprises the steps: constructing a mathematical model of a park comprehensive energy system which is composed of a renewable energy power generation unit, an energy conversion device, a carbon capture and gas power device and a multi-type energy storage unit; based on the mathematical model, with the minimum annual comprehensive cost of the park comprehensive energy system as a target, establishing a cost target function, setting constraint conditions, and formulating an energy management strategy; and according to an energy management strategy, solving according to an improved taboo horse racing optimization algorithm THRO, and planning the hydrogen energy park according to a solving result. According to the invention, not only is the interior of the exterior of the environment realized, but also the maximization of economic benefits is realized.

The invention discloses a battery equalization control method, controller and system based on reinforcement learning, and belongs to the technical field of battery pack equalization, and the method comprises the steps: deploying a trained equalization strategy model, inputting the SOC state of a battery pack in real time, and enabling the model to output an optimal equalization action, and sending a corresponding switching instruction to an energy conversion device connected with the battery pack according to the optimal equalization action so as to drive the energy conversion device to charge and discharge the batteries in the battery pack until a preset equalization termination condition is met, the equalization strategy model is a reinforcement learning model, the state space of the equalization strategy model is a vector formed by the SOC of each battery in the battery pack, the action space of the equalization strategy model is a vector formed by an instruction for controlling each battery to charge, discharge or stand, and the training reward function of the equalization strategy model is shown in the specification; the action award reflects the single-step operation effect, and the completion award reflects the balance completion efficiency. The invention can provide an intelligent equilibrium training deployment scheme which is adaptive and optimized and takes both efficiency and speed into account.

An energy conversion device enclosure system and method that, in certain implementations, may include an expandable system for enclosing one or more generators having a first set of mounting members positioned along a support surface, and a second set of mounting members positioned parallel to the first set. Removable enclosure panels may be coupled between the mounting members, with a first panel featuring a fuel access opening and a second panel having an air intake opening with louvers to provide air flow from one side of the energy conversion device enclosure to the other. Telemetry subsystems may be integrated into a third panel, while a fourth panel is substantially perpendicular to the first and second panels. The fourth panel may be removable to facilitate the expansion of the system in response to future increased energy demand.

The invention provides a real-time feedback control method for an arrayed wave energy conversion device, which comprises the following steps of: carrying out numerical modeling and hydrodynamic analysis on the arrayed wave energy conversion device, establishing a time domain motion equation and a space state equation of the arrayed wave energy conversion device, replacing a convolution term of the time domain motion equation with the state-space equation to obtain a motion state of the arrayed wave energy conversion device, and carrying out real-time feedback control on the arrayed wave energy conversion device. According to the method, wave spectrum characteristics and hydrodynamic response characteristics of floaters are combined, hydrodynamic interference among the floaters in an array system is comprehensively considered, a causal mapping relation between floater speed and wave exciting force is constructed, expected floater response speed is calculated, control force is applied to the PTO through a feedback control means, and the wave excitation force is calculated. The device is kept in an approximately optimal resonance state under the action of random waves, so that the speed of each floater is close to the optimal function extraction condition of each wave frequency, and efficient real-time extraction of wave energy is realized.

The invention relates to an optimized dispatching method for a multi-energy coupling system containing electricity-ammonia conversion, and belongs to the field of optimized dispatching of power system operation. The economic and environment-friendly potential of ammonia energy in a multi-energy coupling system is excavated by carrying out refined modeling on equipment for converting ammonia into electricity, an ammonia fuel cell, ammonia energy storage and the like and considering the thermal power in the ammonia synthesis process. Combining the characteristics of the energy conversion equipment and the energy storage equipment to construct a mathematical model; and constructing an economic dispatching model of the multi-energy coupling system containing electro-ammonia conversion by taking the minimum comprehensive cost as a target. According to the multi-energy coupling system optimal scheduling method based on electro-ammonia conversion, the electro-ammonia conversion efficiency and efficient consumption and diversified utilization of renewable energy sources can be effectively improved.

The preparation method mainly comprises the following steps: dissolving chloroplatinic acid, lanthanum salt and manganese salt in water according to a certain proportion, adding a complexing agent, adjusting the pH value, and carrying out gelation, drying and high-temperature calcination to obtain a perovskite precursor; and treating in a reducing atmosphere, so that platinum atoms are selectively dissolved out from crystal lattices, high-dispersion platinum nanoparticles are formed on the surface, and finally, the composite catalyst with extremely low platinum loading capacity is obtained. According to the method, platinum species are stably anchored through the perovskite carrier, the platinum atom utilization rate and catalytic stability are remarkably improved, excellent electrocatalytic activity and durability are shown in the oxygen reduction reaction, and the method can be widely applied to energy conversion equipment such as zinc-air cells and fuel cells and has important practical application value.

A proton exchange membrane for an energy conversion device, a hydrogen fuel cell stack for a vehicle, and a method for producing a proton exchange membrane. The proton exchange membrane contains a first layer of a perfluorosulfonic acid ionomer. Furthermore, the perfluorosulfonic acid ionomer contains a first additive coated with methoxy nonfluorobutane. The hydrogen fuel cell stack comprises one or more membrane electrode assemblies, each containing a proton exchange membrane.

The invention discloses a method for constructing a carbon hub model containing a high-efficiency energy conversion device, which is used for establishing a carbon hub model containing an energy conversion device with energy production efficiency greater than 1 in an energy station, and the energy production efficiency refers to the ratio of output energy to input energy. According to the flow direction of internal energy of a unit of the energy conversion device with the energy production efficiency larger than 1, carbon emission corresponding to internal loss energy of the high-efficiency energy conversion device is distributed to an energy station; s2, establishing a carbon flow model of all energy conversion devices considering carbon loss in the energy station; s3, under the condition that the high-efficiency energy conversion devices are connected to the energy station, analyzing the relation of carbon emission flow rates in the energy station, solving the carbon flow conversion coefficients of all the energy conversion devices so as to describe the relation of input and output carbon flow rates of all the energy conversion devices, and establishing a carbon hub model of the energy station. According to the method, accurate calculation and responsibility allocation of the carbon emission of the energy station can be realized.

An energy conversion device 100 for an electrolysis system (150) comprises: an adjustable transformer (101) having a primary side (102) connectable to an AC grid (103) via a point of common coupling, a secondary side (104) and a tap switch (105); a rectifier transformer (106, 107) having a primary side (108, 109) configured to provide a secondary side voltage differing by a predetermined phase shift; a thyristor rectifier unit (114, 115, 116, 117) forming a multi-pulse rectifier system (118) that receives the secondary side voltage and provides a DC current to the electrolyser unit (119, 120, 121, 122); and a protection controller unit 133 for connecting / disconnecting the device to / from the power grid as a function of a comparison of the secondary-side voltage to a corresponding secondary-side threshold voltage, where the multi-pulse rectifier system comprises a synchronization control circuit (123, 124, 125, 126) providing thyristor gate pulses at an emission angle synchronized with the secondary-side voltage, and a protection controller unit 133 for connecting / disconnecting the device to / from the power grid as a function of a comparison of the secondary-side voltage to a corresponding secondary-side threshold voltage. And wherein the respective secondary-side threshold voltage is determined from a nominal threshold voltage specified by a grid guideline at the point of common coupling and a physical transformer parameter adjusted according to tap switch position information (129).

To provide an energy conversion device and a safety control method for the same.SOLUTION: An energy conversion device includes a first switch module (10), a motor inverter (20) which has first and second bus terminals respectively connected to first and second terminals of a battery (70), and in which the first switch module (10) controls ON / OFF of the first bus terminal and the first terminal of the battery (70), or controls ON / OFF of the second bus terminal and the second terminal of the battery, or controls ON / OFF of the first bus terminal and the first terminal of the battery (70) and ON / OFF of the second bus terminal and the second terminal of the battery, a motor winding (30) having a first terminal connected to a midpoint terminal of the motor inverter (20), and a second switch module (40) and a first capacitor (50) which are connected in series, and a first terminal and a second terminal of which are connected to a second terminal of the motor winding (30) and the second bus terminal respectively after the series connection is established.SELECTED DRAWING: Figure 1

The embodiment of the present application provides an energy conversion device and a vehicle, the energy conversion device comprises a rectifying module, at least one direct current / direct current (DC / DC) module and a control module, a first end of the rectifying module is connected with a first alternating current end, a second end of the rectifying module is connected with a second alternating current end, a third end of the rectifying module is connected with a first end of the first DC / DC module, a fourth end of the rectifying module is connected with a second end of the first DC / DC module, a third end of the first DC / DC module is connected with a first direct current end, and a fourth end of the first DC / DC module is connected with a second direct current end; in the case that the energy conversion device works in a reverse discharge mode, the control module determines a duty cycle of a switch tube in the first DC / DC module according to a first sampling voltage or a second sampling voltage, and controls conduction or turn-off of a rectifying tube in the rectifying module, so as to realize a direct current / alternating current function of the energy conversion device. The embodiment of the present application can reduce the volume and cost of the energy conversion device.

Provided are a photon up-conversion film, a photon up-conversion body, a laminate, and an energy conversion device, which are capable of high-efficiency up-conversion, and methods of producing the same. The photon up-conversion film according to an embodiment of the present invention includes a color-forming portion containing at least: a sensitizing component capable of absorbing light in a first wavelength region λ1; and a light-emitting component capable of radiating light in a second wavelength region λ2 including wavelengths shorter than those of the first wavelength region λ1. A relaxation time of the photon up-conversion film measured by a spin-echo method through use of time-domain nuclear magnetic resonance (pulse NMR) at 298 K is less than 210 ms.

This invention discloses a long-term self-sustaining energy harvesting device and method with optimized oscillating hydrofoil airfoil profile. The energy harvesting device includes multiple spaced-apart oscillating hydrofoil units arranged in an array. Each oscillating hydrofoil unit includes a hydrofoil shell and a triboelectric nanogenerator. Multiple triboelectric nanogenerators are arranged side-by-side and closely fitted together along the chord length of the airfoil shell. The size of each triboelectric nanogenerator varies with the thickness of the hydrofoil shell, ensuring that the upper and lower arc surfaces of each triboelectric nanogenerator are tangent to the inner wall of the hydrofoil shell. When the oscillating hydrofoil unit pitches or oscillates under the influence of tidal currents, its internal triboelectric nanogenerators capture mechanical energy in real time and generate electricity, replacing the traditional oscillating hydrofoil energy conversion device. This method is simpler in structure, easier to manufacture, lower in cost, and improves energy harvesting efficiency and self-sustainability.

The invention provides a combined heat and power operation method based on supply and demand bilateral collaborative optimization, which relates to the technical field of energy management, and comprises the following steps: decoupling the thermoelectric connection of a combined heat and power system through an energy storage device and a multi-energy conversion device; based on the decoupled cogeneration system, constructing a demand response model; wherein the demand response model comprises an electrical load response and a thermal load response; according to the demand response model, establishing a mathematical model with the purpose of minimizing the sum of the system operation cost and the response compensation cost; wherein equipment operation constraints on the supply and demand sides are introduced into the mathematical model; a mathematical model is converted into mixed integer linear programming, a mathematical modeling tool is used for carrying out model compiling, a commercial solver is called to solve the mathematical model, a combined heat and power operation rule of supply-demand double-side collaborative optimization is obtained, flexible scheduling and efficient energy utilization of a thermoelectric system are achieved, the operation cost is reduced, and the operation efficiency is improved. And the adaptive capacity of the system to renewable energy sources is enhanced.

The application provides a vehicle, an energy conversion device and a charging method thereof. The first switch module and the second switch module are arranged, and the second switch module is arranged between the power battery and the voltage conversion module. When the first switch module is turned on, the power battery, the first switch module, the energy storage module and the external power supply module form a first charging circuit. When the second switch module is turned on, the power battery, the second switch module, the voltage conversion module, the energy storage module and the external power supply module form a second charging circuit. When the high-voltage power supply platform direct-current charging pile is connected, the first charging circuit can be used for direct-current charging, and the charging speed of the power battery is improved. When the low-voltage power supply platform direct-current charging pile is connected, the second charging circuit can be used for step-up charging, and the problem that the power battery cannot be fully charged or cannot be charged by the low-voltage power supply platform direct-current charging pile in the prior art is solved.

The invention discloses an energy conversion structure and a wave energy conversion device, and relates to the technical field of wave energy power generation. The limiting piece is arranged at one end of the guide piece; the damping system is arranged at the other end of the guide piece; the two floating bodies are arranged on the guide piece in a sliding mode, the two floating bodies are connected through an elastic piece, and the floating body close to the damping system is connected with the damping system; and the energy conversion unit is arranged in the floating body, and the energy conversion unit can convert the linear motion of the floating body into electric energy. Compared with an existing single-floating-body structure, the energy conversion device is provided with the two floating bodies, and when the energy conversion device is applied to the wave energy conversion device, the wave energy capturing and converting efficiency of the structure can be effectively improved under the condition of the same space size.

An energy conversion arrangement (10) for an aircraft (1), an energy system (2), and an aircraft (1) comprising an energy conversion arrangement (10) and / or an energy system (2) are provided, wherein the energy conversion arrangement (10) comprises a fuel conversion device (11), in particular a fuel cell system, for converting at least one fuel into electrical and / or mechanical energy; an exhaust gas outlet (13) for discharging exhaust gases (E) generated in the fuel conversion device (11) by the fuel conversion; a further exhaust gas outlet (13) for discharging further exhaust gases (G) from the fuel conversion device (11); and at least one mixing arrangement (42) designed to mix the exhaust gases (E) from the exhaust gas outlet (13) with the further exhaust gases (G) from the further exhaust gas outlet (13).

The invention relates to the technical field of preparation of inorganic nano materials, and discloses a preparation method of a single-layer 1T-phase transition metal chalcogenide quantum sheet material, which mainly comprises the following steps: preparing a transition metal chalcogenide nano powder material by adopting a common hydrothermal or solvothermal method; the preparation method comprises the following steps: preparing a suspension of 1T-phase chalcogenide by a method of combining ion intercalation with liquid phase stripping; and carrying out centrifugal purification on the dispersion liquid obtained by stripping to obtain a suspension of the single-layer 1T-phase chalcogenide quantum sheet material, and further, carrying out cleaning, drying and other steps to obtain the single-layer 1T-phase chalcogenide quantum sheet powder material. The process is simple, the cost is low, the single-layer 1T-phase chalcogenide quantum sheet material can be efficiently prepared, the specific surface area of the product is high, the electrochemical activity is high, and a two-dimensional quantum sheet material with the characteristics of high activity, high specific surface area and the like can be provided for application of various energy storage and energy conversion devices such as supercapacitors, ion batteries, catalysis and the like.

A transmission system comprises a gear shifting wet clutch, a power input shaft, a power output shaft and an energy conversion device. The gear shifting wet clutch is connected between the power input shaft and the power output shaft and provided with a brake inner hub, the power input shaft is further used for being connected with a power device, the power output shaft is further used for being connected to a drive axle, and the energy conversion device is used for being connected to an energy storage device. A kinetic energy recovery shaft is arranged on the energy conversion device, a kinetic energy recovery gear is arranged on the kinetic energy recovery shaft, and the kinetic energy recovery gear is in transmission connection with the brake inner hub. The energy conversion device can drive the kinetic energy recovery shaft to rotate forwards or reversely and can adjust the rotating speed of the kinetic energy recovery shaft so as to adjust the rotating direction and the rotating speed of the power output shaft. The invention further relates to an auxiliary driving method of the transmission system, a kinetic energy recovery method of the transmission system and a vehicle.

The invention provides an energy conversion device, a hydraulic energy control power generation system and application, the energy conversion device comprises a cylinder body, the first end of the cylinder body is open, the second end of the cylinder body is connected with an oil distribution disc set, and the oil distribution disc set is provided with an oil injection port used for being communicated with a power generation device and an oil suction port used for receiving hydraulic oil; the flange connecting module is rotationally assembled at the first end of the cylinder body and is used for rotating relative to the cylinder body to form a swinging angle; the piston power module is connected with the flange connecting module and is used for generating suction / extrusion force to drive the liquid medium to flow to form hydraulic driving force; and a transmission main shaft. Energy recovery can be effectively achieved, the larger the load and jolt / vibration are, the larger the recovered energy is, particularly, kinetic energy in the vertical direction can be recovered, telescopic movement control over the piston body is achieved in an angle deflection mode, a large-range displacement space does not need to be arranged, and the energy recovery efficiency is improved. And therefore, the occupied installation space is smaller.

The invention relates to the technical field of 3D printing, and provides a Stirling type liquid cooling FDM 3D printing spray head device and a 3D printer, and the spray head device comprises a wire feeding assembly, an energy conversion assembly, a heating assembly and a hot melting spray head; the heating assembly is provided with a first wire channel, and the heating assembly is used for heating a printing wire passing through the first wire channel to be in a molten state; the hot melting nozzle is mounted at an outlet of the first wire channel, and the printing wire heated to be in a molten state is extruded out of the hot melting nozzle; the energy conversion assembly is configured to be used for collecting heat of the heating assembly and converting the collected heat into mechanical energy so as to drive the wire feeding assembly. According to the FDM 3D printing nozzle device, the wire feeding assembly, the energy conversion assembly, the heating assembly and the hot melting nozzle jointly form an energy conversion device similar to a Stirling engine, heat is converted into mechanical energy, the wire feeding, wire melting and printing functions of the FDM 3D printing nozzle device are achieved, a motor and a power supply module do not need to be configured, and the manufacturing cost is reduced. Effects of efficient liquid cooling, energy recycling and weight reduction are achieved.

The invention relates to the technical field of underwater in-situ power supply, and discloses a mooring observation platform based on a contra-rotating water turbine, and the platform comprises a housing which is internally provided with a containing cavity, and an energy storage device is disposed in the containing cavity; the mooring structure is connected with the shell, and the mooring structure is used for mooring the shell in ocean current; the two energy conversion devices are arranged, the two energy conversion devices are rotationally connected with the shell, the two energy conversion devices are coaxially arranged in the axis direction of the shell, and the two energy conversion devices are electrically connected with the energy storage device; during mooring, the first energy conversion device generates a first torque relative to the shell, and the second energy conversion device generates a second torque relative to the shell; the first torque and the second torque are equal in magnitude and opposite in direction. The two energy conversion devices generate two torques which are equal in magnitude and opposite in direction, so that the observation platform keeps balance under the action of ocean current, and the overturning risk of the observation platform is eliminated.

Device (12) for inductive energy transfer between a traction battery (10) and an electric motor (8) of a semi-trailer truck (2) with a tractor unit (4) and with a semi-trailer (6), wherein the tractor unit (4) has the traction battery (10) or the electric motor (8), comprising - a kingpin (14) formed by means of a ferromagnetic first core (22) which is provided with a first transformer winding (24), and - a fifth wheel coupling (18) with a seat (20) for the kingpin (14), wherein the fifth wheel coupling (18) has a ferromagnetic second core (30) with a second transformer winding (32), - wherein the ferromagnetic first core (22) is I-shaped and the ferromagnetic second core (30) is U-shaped, - wherein its U-shaped legs (34) face the seat (20) of the fifth wheel coupling (18), so that when the kingpin (14) is received in the seat (20) a transformer core is formed by means of the ferromagnetic first core (22) and by means of the ferromagnetic second core (30), and - wherein the second core (30) is curved inwards on its U-shaped legs (34) at the free end.

Method for preparing self-assembled polymer-based membranes is disclosed. Resulting membranes and energy conversion devices comprising the membrane are also described.

The present application relates to the technical field of energy conversion devices, and discloses a fluid energy conversion apparatus and an engineering machine. The fluid energy conversion apparatus comprises a rotating body, at least one first blade component, and at least one first limiting portion. The rotating body is used for outputting rotational mechanical energy. The first blade component has a first surface and a first axis. The first blade component rotates about the first axis and is connected to the rotating body, and an included angle is formed between the first axis and an axial direction of the rotating body. The first limiting portion is capable of limiting the first blade component, such that the first surface is in a flow-facing state. The foregoing configuration can improve fluid energy conversion efficiency, thereby further increasing the utilization rate of fluid energy.

Provided are a photonic up-conversion film, a photonic up-conversion body, a laminate, and an energy conversion device capable of high-efficiency up-conversion, and a method for manufacturing the same. The photonic up-conversion film of an embodiment of the present application has a color development portion that contains at least a sensitizing component capable of absorbing light in a first wavelength range λ1 and a luminescent component capable of emitting light in a second wavelength range λ2 shorter in wavelength than the first wavelength range λ1. With respect to the photonic up-conversion film, the relaxation time measured by the spin echo method using the time-domain nuclear magnetic resonance method (pulse NMR) at 298 K is less than 210 ms.

This invention discloses a ZnS-modified S-doped Fe-N-C catalyst, its preparation method, and its applications, belonging to the field of electrocatalytic materials and energy conversion technology. Using metal sulfate as a single precursor, this invention employs a one-step in-situ sulfidation strategy to simultaneously construct Fe-N4 active sites, dope S atoms, and generate ZnS nanoparticles in situ via pyrolysis under nitrogen protection, thus preparing a ZnS@Fe-NSC structured catalyst. This material exhibits high CO selectivity, low overpotential, and excellent long-term stability. The ZnS nanoparticles act as electron donors, regulating the electronic structure of the Fe center, enhancing the Fe-N coordination bond strength, effectively inhibiting Fe dissolution, and improving the CO2 reduction reaction kinetics and catalyst durability. This invention features a single precursor, simplified process, and controllable structure, showing broad application prospects in electrocatalytic CO2 resource utilization and energy conversion devices such as Zn-CO2 batteries.

The present disclosure relates to a transducer device, a core module, and an electronic device. The transducer device comprises a first coil and a magnet assembly, and at least one first vibration transmission plate connecting the first coil and the magnet assembly. The magnet assembly surrounds a periphery of the first coil, the magnet assembly and the first coil are spaced apart in a radial direction of the transducer device and at least partially overlap in an axial direction of the transducer device. In an operation state in which the transducer device is input with a first excitation signal, the energized first coil generates a first Ampere force in a magnetic field formed by the magnet assembly that causes the first coil and the magnet assembly to move relative to each other without an iron core and a magnetic conductive plate, which is conducive to increasing the sensitivity of the transducer device.