242results about How to "High energy" patented technology

The invention discloses a mobile modular ammonia-hydrogen fuel cell system and a power generation method. The mobile modular ammonia-hydrogen fuel cell system comprises an ammonia storage module, an ammonia filling module, a hydrogen supply module and a fuel cell module, the ammonia storage module is connected with the ammonia filling module, the ammonia filling module is connected with the hydrogen supply module, and the fuel cell module is communicated with the hydrogen supply module; the hydrogen supply module comprises a plurality of reactors and combustors which are separately arranged; the fuel cell module comprises a fuel cell and a lithium battery which are connected in series; wherein two reactors are flue gas heating reactors, and the other reactor is an electric heating reactor; the combustor is connected with the flue gas heating reactor; the two flue gas heating reactors are simultaneously communicated with the electric heating reactor; the lithium battery is communicated with the electric heating sheet, and a purification unit is arranged between the electric heating reactor and the fuel cell. The mobile modular ammonia-hydrogen fuel cell system can realize flexible carrying of equipment and rapid supply of fuel, can realize rapid power supply under emergency conditions, and has the advantages of being green, pollution-free, wide in adaptive condition and the like.

The invention discloses a constant-pressure type compressed air energy storage system and method combined with pumping and storage, and belongs to the technical field of electric energy physical energy storage systems, and the constant-pressure type energy storage system comprises a pumped storage subsystem, a turbine expansion power generation subsystem, a compressed air energy storage subsystem and a water-gas common-capacity cabin constant-pressure subsystem. By flexibly controlling the operation modes of the subsystems and the on-off states of valves among the subsystems, the system can achieve independent energy storage and power generation operation among the pumped storage subsystem, the air compression subsystem and the turbine expansion subsystem. The design not only improves the flexibility and reliability of the system, but also enables the system to carry out optimal configuration and operation according to actual demands, thereby further improving the energy storage efficiency and economic benefits.

According to the GaN-based LED epitaxial structure, the preparation method thereof and the LED chip provided by the invention, electron leakage is reduced through the electron blocking layer, and meanwhile, the hole injection layer comprising the thin AlN layer is adopted between the multi-quantum well layer and the electron blocking layer in the epitaxial structure, so that the barrier barrier height during hole transport can be reduced, and the hole transport efficiency can be improved. In addition, an effective path for hole tunneling is provided, energy during hole injection is increased, hole injection efficiency is remarkably improved, the concentration of holes injected into the multi-quantum well layer is increased, and then the luminous efficiency of the LED is improved.

The invention relates to the technical field of cosmetics, and particularly discloses a cosmetic applying a dalbergia odorifera branch and leaf extract and a preparation method of the cosmetic. The invention discloses a dalbergia odorifera flower and leaf shampoo which is prepared from the following raw materials: a dalbergia odorifera branch and leaf extract, butanediol, glyceryl polyether-26, rosa damascena flower water, propylene glycol, betaine, a lactobacillus fermentation product, p-hydroxyacetophenone, a saussurea involucrata extract and deionized water. The dalbergia odorifera branch and leaf extract, butanediol, glyceryl polyether-26, rosa damascena flower water, propylene glycol, betaine, the lactobacillus fermentation product, p-hydroxyacetophenone, the saussurea involucrata extract and deionized water are poured into a mixing container according to the proportion and stirred to be uniform, and the skin lotion is prepared. The dalbergia odorifera extract has the beneficial effects that the juice extracted from fresh branches and leaves of dalbergia odorifera is used and applied to skin care cosmetics, and has good effects of moisturizing, moistening skin, whitening, repairing, resisting wrinkles, resisting oxidation and delaying senescence together with other extracts, and the dalbergia odorifera extract is simple in preparation process, relatively low in production cost, easy for large-scale production and high in economic value.

The invention discloses an ultrafast electron diffraction system based on 300kV direct current acceleration and radio frequency compression and a diffraction imaging method, and solves the problems that the time resolution of the current keV ultrafast electron diffraction system is insufficient due to the space charge effect, and the time-varying electric field generated by a radio frequency compression cavity is used for carrying out time compression on the beam bunch length of an electronic pulse; and the electronic pulse energy is low. According to the invention, femtosecond laser is split, one beam of light generates an ultrafast electronic pulse by using an ultrafast electron generation module based on 300kV direct current acceleration, the energy of the ultrafast electronic pulse is relatively high, and then the pulse width of the ultrafast electronic pulse is compressed by using a radio frequency compression module; the pulse broadening caused by the space charge effect of the ultrafast electronic pulse is effectively inhibited, the time resolution below hundred femtoseconds can be realized, meanwhile, the charge quantity of a single beam of ultrafast electronic pulse reaches 16fC (105e-), and the method can be used for ultrafast kinetic research of irreversible materials.

The invention discloses a normalization-processing-based multi-false-target interference modulation method and system. The normalization-processing-based multi-false-target interference modulation method comprises the following steps: firstly, acquiring an intercepted signal; carrying out time delay modulation processing on the intercepted signal; superposing an input signal before each stage of time delay modulation and an output signal after the stage of time delay modulation to serve as an input signal for the next stage of time delay modulation, so that the number of false targets and the stage of time delay modulation are in an exponential relationship; then, performing selective superposition processing on the output signal of each stage of time delay modulation, and then outputting a bit-cut signal; and finally, performing normalization processing on the cut signal and then outputting an interference signal, thereby realizing generation of more false targets under the condition of not increasing excessive hardware resources, improving the energy of the false target signal and further improving the interference effect.

The utility model provides a building ventilation dustproof pipeline convenient to ventilate, which belongs to the technical field of ventilation dustproof pipelines and comprises a pipeline. The first dustproof pipe is fixedly connected to the side end of the pipeline; the second dustproof pipe is in threaded connection with the side end of the first dustproof pipe through a bolt, and the side end of the second dustproof pipe is fixedly connected with a connecting pipe; the frame is fixedly connected to the side end of the connecting pipe, the fan blades are fixedly connected to the side end of the frame, an adjustable baffle and a valve are installed, a user can accurately control the ventilation quantity and the airflow direction according to actual requirements, unnecessary airflow loss is avoided, and therefore energy is saved. Due to improvement of the sealing performance, interference to indoor and outdoor environments is reduced, energy loss caused by airflow leakage is reduced, and the energy utilization efficiency of the system is further improved.

The invention discloses a lithium iron phosphate modified material as well as a preparation method and application thereof, and belongs to the technical field of battery materials. The lithium iron phosphate modified material provided by the invention comprises lithium iron phosphate particles, a coating layer coating at least part of the surface of the lithium iron phosphate particles, and a carbon layer coating at least part of the surface of the coating layer, the coating layer comprises a transition metal doped layer, and the transition metal doped layer contains structural defects. On the basis of improvement of a lithium iron phosphate material, the transition metal doped layer is introduced, doped transition metal elements can generate holes or electrons in the material, and then structural defects such as oxygen defects are formed, so that absorption of the material to oxygen is promoted, and adverse effects caused by oxygen release of a lithium supplementing agent are reduced.

The invention provides a circularly symmetric Airy beam wavefront phase modulation method based on a multi-focal-length lens. The method comprises the following steps: determining beam parameters of a CAB; calculating the self-focusing focal length d of the CAB; shielding all other light rings except the nth light ring, and solving the diffraction integral of the single light ring so as to obtain a focal length dn; the modulation focal length fn is reasonably estimated according to the difference value between the self-focusing focal length d and the single halo focal length dn, and the modulation focal length fn of each stage of halo is finely adjusted based on the obtained modulation focal length fn of each stage of halo, so that the optimal modulation effect is realized. On the premise that CAB initial light intensity distribution is not changed, higher energy concentration and better focusing characteristics are achieved, and the focusing precision of light beams is improved.

The invention relates to the technical field of physical exploration, and discloses a vehicle-mounted multi-channel transient electromagnetic observation system and an observation system.The observation system comprises a tractor providing traction power, a dragging observation platform connected with the tractor through a traction component, and a transceiving controller placed in the tractor, the transceiving controller comprises a multi-channel transmitting system and a multi-channel receiving system; the towed observation platform is used for carrying at least five receiving and transmitting integrated antennas, and the receiving and transmitting integrated antennas are arranged on the towed platform in an array mode; the multi-channel transmitting system is used for providing bipolar current signals for the receiving and transmitting integrated antenna; the multi-channel receiving system is used for receiving transient electromagnetic signals fed back from the underground through the receiving and transmitting integrated antenna; the transient electromagnetic observation system solves the problems that an existing transient electromagnetic observation system is low in detection efficiency and poor in measurement accuracy.

The invention provides a metal nitride-based composite coating and a preparation method thereof, and relates to the technical field of solid lubricating coatings, the metal nitride-based composite coating is composed of MoN metal nitride as a basic phase, high-entropy alloy (Cr-Al-Ti-Nb-V) doped as a reinforcing phase of MoN, and MoS2 and Ag as a lubricating phase. The preparation method comprises the following steps: depositing the MoN-based composite coating of Cr-Al-Ti-Nb-V compounded MoS2 and Ag on the surface of the substrate by adopting a high-power pulse magnetron sputtering technology. The preparation method has the beneficial effects that the defects that the MoS2-based thin film material is poor in lubricating performance in a high-temperature environment and the MoN coating is high in friction coefficient are overcome.

The utility model relates to a spiral inductive coupling coil for plasma generation, which comprises an external coil, a grounding copper sheet, a vacuum capacitor and a radio frequency connection copper sheet, the external coil surrounds and is sleeved on an ionization cavity, the input end of the external coil is connected with a grounding end through the grounding copper sheet, the output end of the external coil is provided with the vacuum capacitor, and the vacuum capacitor is connected with the radio frequency connection copper sheet. The vacuum capacitor is connected to the radio frequency end RF through the radio frequency connecting copper sheet, compared with the prior art, the plasma device is applied to the plasma device, the coil diameter D1 of the external coil is increased, the large surrounding diameter D2 is adopted in the surrounding mode of the external coil, the number of turns of the coil is reduced, the vacuum capacitor is additionally arranged between the radio frequency end RF and the external coil, and therefore the vacuum capacitor is not prone to being damaged. Therefore, the ionization efficiency is improved, the plasma concentration and energy can be effectively improved, and more free radicals are provided for the process for process treatment.

A narrow-pulse-width multi-wavelength laser based on LED pumping comprises a reflecting mirror, a first LED pumping module, an optical rotation crystal, a second LED pumping module, an acousto-optic Q-switched crystal and an output mirror which are sequentially connected in series. The LED pumping module comprises a laser rod located in the center, a glass sleeve is arranged on the periphery of the laser rod in the length direction, a supporting frame is arranged on the periphery of the glass sleeve, a plurality of sets of water-cooling copper blocks are evenly arranged on the supporting frame, and an LED stacking array is arranged on the side, close to the glass sleeve, of each set of water-cooling copper blocks. Each LED stacking array comprises an LED light bar and a PCB (Printed Circuit Board) for fixing the LED light bar, and the PCB is connected with the water-cooling copper block; cooling water circulation modules are arranged at the two ends of the laser rod in the length direction respectively, and water through holes are formed in the cooling water circulation modules and the water cooling copper blocks respectively. A laser resonant cavity system of the laser takes an LED as a pumping source, combines an acousto-optic Q-switching technology, and simultaneously realizes compression of laser pulse width and multi-wavelength output.

The utility model provides a methanol catalytic synthesis system utilizing carbon dioxide in dry quenching circulating gas, which is characterized in that an inlet of a desulfurizing tower of a dry quenching circulating gas decarburization system is used for introducing the dry quenching circulating gas, and a purified gas outlet of the desulfurizing tower is connected with a gas inlet of a decarburization absorption tower; an absorption liquid outlet of the decarburization absorption tower is communicated with an absorption liquid inlet of the desorption tower, an absorption liquid outlet of the desorption tower is communicated with an absorption liquid inlet of the decarburization absorption tower, a flue gas outlet of the desorption tower is communicated with an inlet of the CO2 separation device through the flue gas cooler, and a CO2 gas outlet of the CO2 separation device is communicated with an inlet of the catalytic reactor through the compression device; a hydrogen outlet of the coke oven gas hydrogen production system is communicated with an inlet of the catalytic reactor through the compression system, and methanol is synthesized from carbon dioxide generated by a dry quenching production unit in a coking plant and hydrogen generated by a coke oven gas unit in the catalytic reactor, so that effective utilization of resources is realized.

The invention relates to a microwave source device in the technical field of high-power microwaves, in particular to an L-band compact relativistic Cerenkov microwave generating device, and belongs to the technical field of high-power microwaves. Comprising a cathode structure, an external electromagnetic structure and an internal electromagnetic structure, and the cathode structure comprises a cathode seat and a cathode; the external electromagnetic structure comprises an anode outer cylinder, an outer cut-off neck, outer conductor ripples, a collector, a collector baffle and a solenoid coil; the internal electromagnetic structure comprises an inner cut-off neck, an inner conductor ripple, a short circuit block and a microwave output port; the whole structure is rotationally symmetrical about a central axis; through reasonable design of an electromagnetic structure, a coaxial non-uniform double-ripple slow-wave structure is adopted to enhance beam-wave coupling, a high-efficiency beam-wave effect is realized in a relatively short period, and a coaxial collector structure is adopted to improve the resonance characteristic of the slow-wave structure to reduce the axial size, so that miniaturization and compactness of the device are realized.

The invention relates to a pipeline internal detection system and method based on particle ray detection imaging, and the system comprises a ray source and a plurality of detectors which are circumferentially and uniformly distributed around the ray source at intervals. The plurality of particle scattering rays are formed after a plurality of particle incident rays emitted by the ray source are scattered by the wall of the to-be-detected pipeline during detection. The method has the beneficial effects that the design is reasonable, rapid detection of pipeline wall defects, especially tiny defects, can be realized, the pipeline internal detection precision and defect adaptability are improved, and the technical problem of internal detection of tiny complex defects of the pipeline is solved.

The invention relates to an iridium radioactive source shell welding method and system, and belongs to the technical field of welding. The iridium radioactive source shell welding method comprises the following steps that a shell is rotated, and the shell and an end cover are preheated through laser; inputting actual thickness size information of the shell and actual thickness size information of the end cover; the laser adjusts the preset laser power density and defocusing amount according to the actual thickness size information and the standard thickness size information of the shell and the end cover; the automatic rotating mechanism adjusts a preset rotating speed according to the actual thickness size information of the shell and the actual thickness size information of the end cover; the assembled shell and end cover are installed on an automatic rotating mechanism; and the shell and the end cover are welded according to the preset laser power density and defocusing amount, and the automatic rotating mechanism drives the shell and the end cover to rotate according to the preset rotating speed until welding is completed. According to the iridium radioactive source shell welding method provided by the embodiment of the invention, the thickness size of each part of the manufactured iridium radioactive source shell is uniform.

The invention relates to the technical field of laser nonlinear frequency conversion, and discloses a device and method capable of realizing high repetition frequency nonlinear frequency conversion, and the device comprises a pulse light source which emits fundamental frequency light with a linear polarization state; the time domain beam splitting system is used for splitting the fundamental frequency light into 2n groups of polarized light; the repetition frequency of each beam of polarized light orthogonal in the polarization direction is 1 / 2n + 1 of the repetition frequency of the fundamental frequency light, and n is greater than or equal to 0; the nonlinear frequency conversion system enables each group of polarized light to generate two beams of signal light with the same pulse sequence; the time domain beam combining system is used for combining the generated 2n + 1 groups of signal light to obtain combined light output with the same repetition frequency as the fundamental frequency light; according to the invention, the electro-optical modulator and the polarizing beam splitter are utilized to divide the high repetition frequency fundamental frequency light into two beams of low repetition frequency pulses, and the wavelength generating nonlinear conversion is subjected to equal-time-interval beam combination through the annular reflection cavity with the delay light path, so that the low repetition frequency pulses are synthesized into the high repetition frequency pulses, and high-energy and high repetition frequency nonlinear frequency conversion is realized.

The application discloses a kind of slimming traditional Chinese medicine composition and preparation method thereof, it is related to slimming traditional Chinese medicine technical field.Slimming traditional Chinese medicine composition includes the following weight parts of Chinese medicinal materials: 30-45 parts of raw astragalus, 10-15 parts of prepared atractylodes rhizome, 15-23 parts of cassia bark, 20-30 parts of dried tangerine or orange peel, 30-45 parts of lotus leaf, 20-30 parts of raw hawthorn, 15-23 parts of kelp, 10-15 parts of turmeric, 10-15 parts of fried Semen Raphani, 10-15 parts of raw safflower stigma.The preparation method includes the following steps: the weight parts of the above-mentioned Chinese medicinal materials are extracted by water decocting.The traditional Chinese medicine composition of the application has the effects of benefiting qi and invigorating the spleen, resolving phlegm and eliminating dampness, and is also compatible with drugs for warming kidney and assisting yang, eliminating phlegm and resolving mass, and has the combined effects of treating both symptoms and root causes, tonifying deficiency and eliminating excess, which can increase energy consumption of the body, reduce fat generation and storage to achieve the effect of weight loss.The traditional Chinese medicine composition of the application is mainly composed of food-medicines, and can be taken for a long time.

The utility model discloses a self-cleaning fluid filtering device and belongs to the technical field of filtering devices. The self-cleaning type fluid filtering device comprises a filtering assembly, a driving assembly and a cleaning assembly, the driving assembly is arranged in the filtering assembly, the cleaning assembly is arranged on one side of the outer portion of the filtering assembly, the driving assembly is used for driving a filtering cylinder to rotate, the cleaning assembly is used for cleaning the filtering cylinder, and the cleaning assembly comprises a communicating base; the interior of the communicating seat is hollow, a plurality of mounting holes are formed in one side of the communicating seat, air nozzles are mounted in the mounting holes, the inner diameters of the air nozzles are sequentially decreased from right to left, and a compressed air inlet pipe communicates with the face, opposite to the mounting holes, of the communicating seat; the outer wall, provided with the long groove, of the filter box is fixedly connected with one side of the communicating base, and the ends, away from the communicating base, of the multiple air taps are all located in the long groove.

The present invention relates to the hydrokinetic chamber (22) comprising the propeller / vanes of the hydrokinetic turbine (23), the water collector (21) of the hydrokinetic chamber, a leak channel (26) of the hydrokinetic chamber, a flow control gate (28) for controlling the flow into the hydrokinetic chamber, and stop-logs (27) for the maintenance of the hydrokinetic chamber, the hydrokinetic chamber being associated with a chamber (24) for generating hydrokinetic energy, which houses a turbine-generator (23) and motor pumps, the chambers (22) and (24) being mounted in an energy-generating module for generating hybrid energy. The invention also relates to a method for generating energy and to a floating Hydroelectric Power Plant using the components of the present invention.

The application relates to a middle air inlet type household convenient drying machine, air inlets are arranged in the middle part of the machine body, and other non-core pneumatic components such as control panels are arranged outside the fluid channel, the path from air suction to air exhaust forms a more short and straight, smooth and efficient airflow air duct, airflow loss is maximally reduced, air speed and air volume are obviously improved, the pneumatic performance and drying efficiency of the drying machine are improved, and working time is shortened. Meanwhile, due to the smooth air duct design, airflow can pass in a more smooth laminar flow state, noise generated due to impact and turbulence is reduced, a more quiet use experience is provided for users, due to the reduced air duct resistance, the running load of the motor is smaller, energy is saved, the service life of the drying agent is prolonged, meanwhile, the compact structure of the household drying machine is maintained, and a more comfortable use experience is brought to users.

The application belongs to the technical field of insulation packaging, and particularly relates to a modified epoxy resin with thermal stability, a preparation method and application. The modified epoxy resin with thermal stability provided in the application is loaded with aluminum oxide-supported tin-bismuth alloy nanoparticles (Al2O3-Sn 57 Bi 43 ), which interacts with epoxy resin molecules to form hydrogen bonds, chemical bonds or van der Waals forces and other interaction forces, greatly improving the energy required for the breaking of epoxy resin molecular chains during heating. Meanwhile, the aluminum oxide-supported tin-bismuth alloy nanoparticles (Al2O3-Sn 57 Bi 43 ) have good heat conduction performance and can dissipate heat as a heat conduction path, which increases the thermal decomposition temperature of the material and enhances the thermal stability of the epoxy resin, thereby solving the defect of poor thermal stability of the epoxy resin.

The utility model relates to a dust removal device suitable for laser welding, which comprises an emitting head, a dust removal device and a dust removal device, the emitting head is provided with a laser channel for a laser beam to pass through, a welding opening used for being in butt joint with a welding area of a workpiece is formed in the bottom of the laser channel, and the emitting head is further provided with a shielding gas channel for introducing shielding gas into the welding opening; and the dust removal cover is connected to one end of the emitting head and communicates with the shielding gas channel, and a plurality of gas extraction channels which are used for extracting dust at the welding opening and are of a spiral rising structure are formed in the periphery of the dust removal cover. A plurality of air exhaust channels which are used for exhausting dust at the welding opening and are of a spiral ascending structure are formed in the periphery of the dust removal cover, and spiral ascending airflow can be formed during air exhaust of the air exhaust channels to exhaust welding slag. The air flow of the air exhaust channel is spiral, due to the Bernoulli's law, the edge air pressure is large, the center air pressure is small, and fluid has the trend of rapidly moving towards the edge, so that the air flow has higher suction force, and meanwhile, the air flow has higher stability and dust removal effect.

The invention discloses a method for liquid-phase deposition of a thick coating on a metal surface and application of the method, and belongs to the technical field of surface treatment. The method comprises the following steps that S01, matrix metal is cleaned up and dried; s02, applying a strong electric field generated by 100-3000V high-voltage pulse electricity between two electrodes of the matrix metal and the M metal which are placed in the low-temperature and low-concentration metal ion Mn < + > plating solution; and S03, after deposition is completed, the metal thick plating layer which is compact in structure and high in binding force with the base body is obtained. According to the method, the pulse voltage of 100-3000V is applied, metal cations in the solution can obtain the maximum energy of 3000eV under the action of a high-potential electric field, the high-energy ions bombard a cathode metal part, the bonding performance of a coating and a matrix is improved, meanwhile, the coating can be more compact, and the service life of the coating is prolonged. And the problems of low binding force between the coating and the substrate, non-compactness of the coating, incapability of depositing a thick plating layer and the like in the existing electroplating coating are solved.

The invention discloses a 1.5-1.6 [mu] m wave band passive Q-switched pulse laser, and belongs to the technical field of laser devices. According to the passively Q-switched pulse laser, the Er < 3 + > / Yb < 3 + > double-doped YPO4 crystal (Er < 3 + >: Yb < 3 + >: YPO4) with high thermal conductivity, long laser upper-energy-level fluorescence lifetime and high Yb < 3 + >-> Er < 3 + > energy transfer efficiency is adopted as a gain medium, and a semiconductor laser pulse pumping scheme is utilized, so that human-eye-safe 1.5-1.6 [mu] m waveband pulse laser with stable operation, high energy, high repetition frequency and narrow pulse width is realized; the light source can be used as a detection light source of laser range finders and laser radars.

The application relates to a feeding module and a single-wall carbon nanotube production device, which comprises a mixing cavity, a first feeding mechanism and a second feeding mechanism. The first feeding mechanism comprises a storage device, a powder feeder and a plasma generator. The powder feeder is in communication with the storage device and the plasma generator respectively, and is used for providing the powder-like catalyst stored in the storage device to the plasma generator. The plasma generator can ionize the catalyst conveyed by the powder feeder, and provide the ionized gaseous catalyst to the mixing cavity. The second feeding mechanism comprises an air inlet pipe, which is in communication with the mixing cavity and can simultaneously provide the mixing cavity with carbon source gas and carrier gas. The mixing cavity can mix the ionized catalyst, the carbon source gas and the carrier gas to form a reaction gas. In this way, the carbon source gas and the catalyst can be fully mixed, which is beneficial to improving the yield and quality of the subsequent preparation of single-wall carbon nanotubes.

The utility model relates to the technical field of fire-fighting equipment, in particular to a forest fire-fighting supply cabinet which comprises a cabinet body, a mounting part is arranged on the cabinet body, a photovoltaic panel is arranged at the upper end of the mounting part, a storage chamber is arranged in the cabinet body, a partition plate is fixedly arranged in the storage chamber, a plurality of supporting parts are fixedly arranged on one side of the partition plate, and the supporting parts are fixedly arranged on the other side of the partition plate. A drawer is arranged on one side of the cabinet body, a partition plate is arranged on the other side of the cabinet body, a containing chamber is arranged on the other side of the partition plate, a portable water pump is arranged in the containing chamber, a water hose matched with the portable water pump is arranged in the drawer, and a moving mechanism matched with the portable water pump is further arranged in the containing chamber. The portable water pump can be moved to a water source near a fire disaster according to the position of the fire disaster, so that the laying length of a water hose is reduced, a processor and a wireless module are arranged in the cabinet body, and the position, the operation state and the material condition of the supply cabinet can be searched in real time on a platform or a mobile phone terminal.

The magnetomotive force strengthening device comprises fixing frames, an output shaft, a rotor, an outer stator, a bearing, a machine shell and a machine cover, the machine cover is installed at one end of the machine shell, at least one fixing frame is fixed in the machine shell, the two ends of the output shaft penetrate through the fixing frames and the machine cover, the bearing is installed between the output shaft and the fixing frames, the rotor is installed in the machine shell and fixed to the output shaft, and the outer stator is installed on the machine cover. A plurality of outer stator magnetic units and a plurality of rotor magnetic units are respectively and uniformly embedded on the opposite circumferential surfaces of the outer stator and the rotor, the support is sleeved on the output shaft, the lower end of the support is fixed on the fixing frame through a screw, the inner stator is fixed on the outer circumference of the support through a positioning key, and the inner stator is fixed on the outer circumference of the support through a screw. An inner stator magnetic unit is embedded on the outer circumference of the inner stator, the inner stator magnetic unit is opposite to the rotor magnetic unit, a circular ring is arranged on the outer circumference of the rotor, a plurality of rotor magnetic units are uniformly embedded on the circumference of the circular ring, the outer side of each rotor magnetic unit is opposite to the outer stator magnetic unit, and the inner side of each rotor magnetic unit is opposite to the inner stator magnetic unit.

The invention relates to an air supply device (1) for a fuel cell system (2, 3), having a flow compressor and a drive motor (4) for the flow compressor, wherein the flow compressor has two compressor wheels (6, 7) which are configured to be substantially symmetrical and are arranged on a common shaft (5) together with the drive motor (4) arranged between the two compressor wheels. The air supply device according to the invention is distinguished in that the two compressor wheels (6, 7) are connected on the pressure side to two systems (2, 3, 10, 13) which are connected aerodynamically non-permanently. Furthermore, a fuel cell system (2, 3) using such an air supply device (1) is claimed.