32results about How to "High performance output" patented technology

The invention relates to a multi-connection air conditioning unit and a control method thereof during small-load refrigeration running. The multi-connection air conditioning unit comprises a compressor and more than two outdoor heat exchangers, wherein all the outdoor heat exchangers are respectively connected with the compressor and respectively provided with an outdoor fan; and the exhaust portof the compressor is provided with an outdoor high-pressure sensor for detecting the pressure of the air conditioning system. The control method comprises the following steps of: (1) judging the current environment temperature and selecting air gears N of the outdoor fans; (2) judging whether the load Q of the air conditioning system is larger than a set range or not; (3) judging whether the pressure of the air conditioning system is in a set range or not; and (4) running the outdoor fans. The invention can effectively control the capacity output of the outdoor unit and enables the air conditioner to normally run during small-load refrigeration or low-temperature small-load refrigeration; and through the precise control to a pressure system, the system can work in an optimal pressure state at different environmental temperatures so as to improve the efficacy of the system under partial load and guarantee the reliable running of the system.

An improved exhaust system for an internal combustion engine generally comprises two expanding megaphones, separated by a dual core annular flow silencing section. The two or split megaphone design facilitates broadening of the time of the negative pressure wave to provide a desirable broad range power output while substantially reducing obnoxious sound output.

Various embodiments of the invention allow the generation of an output clock signal that comprises a frequency that is a fractional frequency of an input clock signal and is adjusted with respect to an input signal. A fractional clock generator that has high performance output, low power consumption, small area, and good jitter performance is presented.

The embodiment of the invention provides a friction nano-generator and a test device. The generator is applied a space between the track and roadbed slab of a railway system and is installed at the midpoint of a rail section between every two adjacent sleepers. The friction nano-generator comprises a layered structure and an insulating waterproof packaging protection layer wrapping the layered structure; the layered structure comprises an upper supporting layer, an upper electrode layer, a friction pair, a lower electrode layer, a lower supporting layer and a buffer layer distributed sequentially from top to bottom. Mechanical energy generated by the vibration of the track and the roadbed slab when a train passes is collected; the mechanical energy is converted into electric energy to be stored or directly supplied to electric equipment related to the track. The test device provided by the invention can be used for researching the electric signal output performance of the friction nano-generator under different track vibration conditions and different friction pair gap design conditions.

The invention discloses asymmetric-structure fuel cell positive and negative pole plates and a galvanic pile formed by the same. The positive and negative pole plates are characterized in that the positive and negative pole plates are both in asymmetric structures, areas of oxidant, reducing agent and cooling agent outflow passages of the positive and negative pole plates are larger than or equalto areas of corresponding inflow passages, and a ratio range of a medium outflow passage area and a medium inflow passage area is 1-4. Reaction gases required by discharging of each cell of the galvanic pile can be distributed uniformly, flow differences in distribution of three fluid media including an oxidant, a reducing agent and a cooling agent in the galvanic pile from respective distributionpassages into each cell are reduced, current density distribution uniformity is guaranteed, local overheating is avoided, and accordingly output electrical performance uniformity of each cell is improved.

The invention relates to a composite magnetic material which comprises the following components: 50 to 70% of iron powder, 20 to 40% of carbonyl iron powder and 5 to 15% of iron-silicon alloy powder, wherein silicon content of the iron-silicon alloy powder is 6 to 7%. A surface of the composite magnetic material is phosphatized to form a phosphate conversion coating, and an inorganic coating layer protects the outer surface of the phosphate conversion coating. A preparation method of the composite magnetic material, which is disclosed by the invention, comprises the following steps of: (1) material taking and mixing; (2) baking and stir-frying; (3) phosphorization; (4) inorganic coating; (5) cooling and screening; and (6) baking. According to the invention, the preparation method is optimized, and the obtained composite magnetic material has excellent performance of balancing high conductivity and high saturation.

The present invention provides a motor stator. The motor stator comprises a stator core, a multi-layer winding coil and an S-shaped groove insulation paper, a plurality of stator slots are formed on the stator core, the multi-layer winding coil penetrates the internal portions of the stator slots, the multi-layer winding coil is wrapped with the S-shaped groove insulation paper, extension portionsare respectively formed at the head and tail ends of the S-shaped groove insulation paper, the extension portions and the S-shaped groove insulation paper itself are overlapped, the two opposite sidewalls of the stator slots are respectively provided with grooves holding the corresponding extension portions, and the grooves are basically filled with the extension portions. The motor stator can avoid discharge of the winding coil and the stator core through the air on the premise of not reducing the copper space factor of the motor so as to avoid short circuit.

The invention provides a solid oxide fuel cell electrolyte film preparation method. The solid oxide fuel cell electrolyte film preparation method comprises the steps that an anode substrate is provided and comprises a metal support body and a fuel electrode layer located on the metal support body, a porous area and a protective coating are arranged on the metal support body, the protective coating is arranged along the outer surface of the metal support body and the porous inner wall of the porous area, and the fuel electrode layer covers the porous area; and an electrolyte film is sputtered on the anode substrate by adopting a magnetron sputtering method, specifically, a barrier layer and a main electrolyte layer are sequentially sputtered on the anode substrate, the barrier layer takes a Zr-based material or a Ce-based material as a substrate, the main electrolyte layer takes a Ce-based material or a Zr-based material as a substrate, and the total thickness of the electrolyte film is not greater than 20nm-40[mu]m. The double-electrolyte compact layer is prepared by adopting the magnetron sputtering method, so that the thickness of the electrolyte can be effectively reduced, and the internal resistance loss is reduced.

The invention discloses an air conditioner system and a control method thereof. The air conditioner system comprises an outdoor unit and at least one indoor unit. Each indoor unit comprises an indoor heat exchanger and an indoor throttling element. The outdoor unit comprises a compressor, a reversing assembly, an outdoor heat exchanger and a heat dissipation element. The reversing assembly comprises a first valve port, a second valve port, a third valve port and a fourth valve port. The heat dissipation element comprises a refrigerant heat dissipation part through which a refrigerant flows, and an air heat dissipation part making contact with outside air. The refrigerant heat dissipation part is in series connection with a bypass throttling element. The bypass throttling element and the refrigerant heat dissipation part which are in series connection are connected with an outdoor throttling element in parallel. Both the bypass throttling element and the outdoor throttling element have an opening-closing function. According to the air conditioner system, the problem that due to the adoption of air convection heat dissipation, the heat dissipation effect of an electronic element is poor is solved, and the problem of loss of part of an refrigerant in a refrigerant flow path of the air conditioner system due to the adoption of a bypass refrigerant mode for heat dissipation of the electronic element is avoided to a certain extent.

The invention relates to the technical field of solar cells, and specifically discloses an electrochemical treatment method for modifying surface properties of an absorption layer of a copper zinc tin sulfide thin film solar cell. The method includes the steps of: placing a copper zinc tin sulfide tin film material in an electrochemical workstation after selenylation (or sulfuration) in a constant temperature tubular annealing furnace, and connecting a substrate and Mo with a working electrode; putting the copper zinc tin sulfide thin film material in a treatment solution which is a mixed solution of 0.001 to 1 M / L salt, inorganic acid and deionized water; and applying an electrical signal which is any one of a cyclic voltammetry electrical signal, constant voltage electrical signal, constant current electrical signal, pulse voltage electrical signal or pulse current electrical signal. The method provided by the invention can remove a high-conductivity copper-rich phase on the surface of the copper zinc tin sulfide thin film, optimizes interface characteristics of a pn junction of a solar cell device, improves performance output of the cell, is environment-friendly and reduces cost.

The invention discloses a content collection system for multi-transmission protocol media content collecting. The content collection system comprises a service control module and a collection module, wherein the control service module is used for monitoring and controlling the system; the collection module is used for collection analyzing and storing of media content; and the control service module is in communication connection with the collection module. By means of a method for controlling length of steel wire ropes in net frame hoisting, the content collection system for multi-transmission protocol media content collecting can be achieved and has the advantages of being strong in generality, high in system resource utilization rate, and good in flexibility and expansibility.

The embodiment of the invention provides a silencer and a vehicle. The silencer comprises a shell, a valve, a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are arranged in the shell, the shell is provided with a gas inlet and a gas outlet, the first end of the first pipeline communicates with the gas inlet, the second pipeline comprises a first sub-pipeline and a second sub-pipeline which communicate with each other, the first end of the first sub-pipeline communicates with the gas outlet, and the valve is arranged at the second end of the first sub-pipeline and used for opening or closing the first sub-pipeline. By changing the internal tuning structure of the silencer, an engine can achieve a high-quality noise effect at a low rotating speed, and can achieve high-performance output at a medium-high rotating speed.

The invention provides a fuel battery. The fuel battery is characterized in that I- / I3-oxidation and reduction coupled molecules are as a cathode reaction medium to replace the traditional mode of direct electric reduction using oxygen as a cathode substance, and the coupled molecules are restored by means of the action of photocatalysis so as to form the I- / I3-oxidation and reduction coupled cathode fuel single battery. The invention also provides a preparation method of the fuel battery. The preparation method comprises the steps of preparing a membrane electrode and assembling the membrane electrode. The fuel battery and the preparation method have the advantages that the cathode function of the fuel battery is realized by utilizing the reverse circulation of the coupled molecules under the action of photocatalysis, so that a proton-exchange-membrane fuel battery with low consumption and high efficiency is formed; the mode using the coupled molecules as the cathode replaces the traditional mode of direct electric oxidation of oxygen, and the use of a noble-metal catalyst can be reduced or abandoned on the premise of guaranteeing high-performance output; a liquid cathode is adopted as a reactant, so that the design, control and operating management of the fuel battery can be simplified; the coupled molecules are restored by means of photocatalysis, so as to be beneficial for further improvement of the reaction kinetics.

The invention discloses a micro-fuel cell suitable for high-concentration methanol and a discharging method of the micro-fuel cell. An existing direct methanol fuel cell cannot use a high-concentration methanol solution as the supplied solution. The micro-fuel cell suitable for high-concentration methanol provided by the invention comprises an anode external flow field plate, an anode polar plate,a membrane electrode, a cathode polar plate and a cathode end plate which are arranged in sequence. A serpentine flow channel groove is formed in the inner side surface of the anode external flow field plate. The serpentine flow channel groove does not penetrate through the anode external flow field plate. The membrane electrode comprises an anode electrode, a proton exchange membrane, a cathodeelectrode and a metal mesh. The anode electrode is composed of an anode diffusion layer and an anode catalytic layer. According to the micro-fuel cell, the input methanol solution suffers from the double obstruction of the serpentine flow channel groove and the anode plate on the anode external flow field plate, so that high-performance output and high stability of the micro-fuel cell still can bekept under the supply of low-flow-rate high-concentration fuel, the liquid accumulation size of reactants is effectively reduced, and the fuel utilization rate is improved.

The invention relates to a multi-connection air conditioning unit and a control method thereof during small-load refrigeration running. The multi-connection air conditioning unit comprises a compressor and more than two outdoor heat exchangers, wherein all the outdoor heat exchangers are respectively connected with the compressor and respectively provided with an outdoor fan; and the exhaust port of the compressor is provided with an outdoor high-pressure sensor for detecting the pressure of the air conditioning system. The control method comprises the following steps of: (1) judging the current environment temperature and selecting air gears N of the outdoor fans; (2) judging whether the load Q of the air conditioning system is larger than a set range or not; (3) judging whether the pressure of the air conditioning system is in a set range or not; and (4) running the outdoor fans. The invention can effectively control the capacity output of the outdoor unit and enables the air conditioner to normally run during small-load refrigeration or low-temperature small-load refrigeration; and through the precise control to a pressure system, the system can work in an optimal pressure state at different environmental temperatures so as to improve the efficacy of the system under partial load and guarantee the reliable running of the system.

The invention provides an air inlet structure, an automobile and an air inlet control method. The air inlet structure comprises an air inlet header pipe, and a volume cavity is formed in the air inlet header pipe; one end of the intake manifold is connected with the intake manifold, and the other end of the intake manifold is used for being connected with an engine; the partition plate is arranged in the volume cavity so as to divide the volume cavity into a first volume cavity and a second volume cavity; a communicating port is formed in the partition plate, and the first volume cavity and the second volume cavity are communicated with each other through the communicating port; the baffle is movably arranged to open or close the communication opening; the first air inlet pipeline is provided with a first air inlet channel communicated with the first volume cavity; and the second air inlet pipeline is provided with a second air inlet channel communicating with the second volume cavity, and the air inlet structure solves the problem that in the prior art, air inflation of an air inlet structure of an engine is not flexible enough.

The embodiment of the invention provides a file processing method and device, a storage medium and electronic equipment. According to the method, when a start-up instruction of a file processing taskbased on an MTP is detected, an MTP driver is called to start multiple cores of a CPU and improve performance output of the CPU; the file processing task is run on the big core of the CPU, wherein thefile processing task is continuously detected by the MTP driver; when it is detected by the MTP driver that the file processing task ends, performance output of the CPU is reduced. By adopting the technical scheme, the speed of file processing operation can be improved.

The invention discloses a compressor high-pressure differential starting control method and device and an air conditioner. The method comprises the following steps that when the compressor is in an open-loop control mode, starting the compressor according to a preset initial condition; detecting whether the compressor is successfully started or not, and if so, controlling the compressor to be switched to a closed-loop control mode to operate. According to the invention, the problem that a pressure balance valve needs to be opened when a compressor of a multi-system type is started in the priorart is solved, and the problem of fast and stable starting can be realized under the condition that the unit is not open gas and bypass.

The invention relates to air conditioning systems, in particular to an air conditioning system for cooling by exchanging heat of a water source, provides an intelligent water source marine air conditioner, and aims to provide a modular water-cooled air conditioning system for the problem that an existing air-cooled air conditioning system is not suitable for use in a ship. The intelligent water source marine air conditioner comprises a plurality of water-cooled water chilling units, the water-cooled water chilling units realize cooling by exchanging heat between chilled water and cooling water, and the water-cooled water chilling units comprise cooling water inlets, cooling water outlets, chilled water inlets and chilled water outlets. The cooling water inlets between the water-cooled water chilling units are connected in parallel through pipelines, the cooling water outlets between the water-cooled water chilling units are connected in parallel through pipelines, the chilled water inlets between the water-cooled water chilling units are connected in parallel by pipelines, and the chilled water outlets between the water-cooled water chilling units are connected in parallel throughpipelines. The intelligent water source marine air conditioner is applicable to ships.

The invention relates to a constant current source power supply. The power supply comprises a starting circuit, a pulse width control circuit, a rectification and filtering voltage sampling circuit, apower switch tube, a transformer, rectification and filtering circuits and linear voltage regulators, wherein the starting circuit is connected with a primary winding of the transformer through the pulse width control circuit and the power switch tube; the transformer is provided with a feedback winding, and the feedback winding passes through the rectification and filtering voltage sampling circuit and then controls the pulse width control circuit; the transformer is provided with multiple secondary windings, each secondary winding corresponds to a rectification and filtering circuit and a linear voltage regulator, and each secondary winding outputs a power supply through the rectification and filtering circuit and the linear voltage regulator. According to the invention, the feedback winding is designed, and secondary voltage regulator is carried out through the fed back output power supplies, thereby achieving high-performance output of the constant current source power supply, andsolving the problems such as low power conversion efficiency, serious heating of power devices and poor power supply voltage adjustment rate and load adjustment rate.

The invention discloses a frequency offset estimation method and device, a storage medium and a terminal, and the method comprises the steps: receiving downlink sample data of a target cell, and carrying out the frequency offset correction of the downlink sample data through employing a plurality of preset correction frequency offsets, so as to obtain a plurality of pieces of frequency offset corrected data; for each preset correction frequency offset, calculating a plurality of characteristic parameters by using the frequency offset corrected data corresponding to the preset correction frequency offset, and enabling respective distinguishable frequency offset intervals of the plurality of characteristic parameters to be complementary; calculating a difference value between the preset correction frequency offsets corresponding to the two first characteristic parameters with the maximum values in the plurality of first characteristic parameters; and if the difference value falls into the preset interval, selecting from a plurality of preset correction frequency offsets based on other characteristic parameters except the first characteristic parameter in the plurality of characteristic parameters to obtain a frequency offset estimation result. Through the scheme of the invention, low-cost frequency offset estimation high-performance output in a high-speed mobile environment can be realized.

The invention provides a proton exchange membrane fuel cell operating method based on the non-uniformity of physical field distribution, comprising the following steps: establishing an experimental model; performing a polarization curve test on the experimental model; adjusting operating conditions; drawing a polarization curve and a power curve; establishing a corresponding The numerical matrix of the physical field distribution is numerically expressed to obtain the size of the PEMFC non-uniformity; under different operating conditions, the relationship between the temperature distribution of the PEMFC and the non-uniformity of the current density distribution with respect to the current density is drawn in the same coordinate system; Draw curves about current density non-uniformity and PEMFC output power, temperature non-uniformity and PEMFC output power; extract corresponding characteristic expressions to calculate PEMFC output power; compare traditional polarization / power curves with non-uniform PEMFC The curve of the output power, and the calculated PEMFC output power, can obtain the optimal operating temperature under different current densities.

The invention relates to the technical field of solar cells, and specifically discloses an electrochemical treatment method for modifying surface properties of an absorption layer of a copper zinc tin sulfide thin film solar cell. The method includes the steps of: placing a copper zinc tin sulfide tin film material in an electrochemical workstation after selenylation (or sulfuration) in a constant temperature tubular annealing furnace, and connecting a substrate and Mo with a working electrode; putting the copper zinc tin sulfide thin film material in a treatment solution which is a mixed solution of 0.001 to 1 M / L salt, inorganic acid and deionized water; and applying an electrical signal which is any one of a cyclic voltammetry electrical signal, constant voltage electrical signal, constant current electrical signal, pulse voltage electrical signal or pulse current electrical signal. The method provided by the invention can remove a high-conductivity copper-rich phase on the surface of the copper zinc tin sulfide thin film, optimizes interface characteristics of a pn junction of a solar cell device, improves performance output of the cell, is environment-friendly and reduces cost.

The invention belongs to the field of household air-conditioners and particularly relates to a control method for an air supply angle of the air-conditioner and a control system. Room air speed distribution is controlled according to an obtained temperature parameter value, for instance, in the refrigerating state, or the air supply state or the dehumidifying state, the higher the indoor temperature is, the more approximate to the maximum air output angle an air guide device is, the temperature in a room can be lowered as soon as possible, the cooling degree is increased, or dehumidifying is carried out; after the indoor temperature is lowered, the air guide device moves upwards, the air volume is reduced, and the cooling degree brought by air is reduced so as to solve the problem that the room temperature is low. In the heating state, the lower the indoor temperature is, and the closer the air guide device moves to the maximum air outlet angle, so that spread of warm air is accelerated; the higher the indoor temperature is, the closer the air guide device moves to the bottommost angle so as to reduce air output, and the warm air can be blown towards the ground. According to the method, the position of the air guide device is controlled through the obtained temperature parameter value, a temperature field and an air speed field in the room can be adjusted in a coordinated mode, and the use comfort of users is improved.

The invention provides a heating control device and method of an air conditioner. The control device comprises a timing unit, a temperature measurement unit and a control unit, wherein the timing unit is used for accumulating the running time of the air conditioner, the temperature measurement unit is used for obtaining the environment temperature of the environment where the air conditioner is located and the control unit is used for setting the compensation temperature value of heating of the air conditioner according to the running time and the temperature difference between the set temperature of heating of the air conditioner and the environment temperature. According to the scheme, the heating control device and method can realize automatic control over the heating temperature of the air conditioner and improve the air blowing comfort of the air conditioner.

The invention discloses a fuel cell capable of controlling cell self-corrosion. The fuel cell comprises a membrane electrode, pole plates arranged at two sides of the membrane electrode separately, fastening end plates arranged at the outermost sides of the pole plates separately, and a protection plate located at the outer side of at least one fastening end plate, wherein each protection plate communicates with the corresponding pole plate through a wire or is in direct contact with the corresponding pole plate; and each protection plate comprises a plurality of metal or alloy sheets and thestable potential of the protection plate is lower than that of the pole plates. The protection plates and the corresponding pole plates of the fuel cell are in direct contact or are connected by adopting the wires, a certain galvanic difference exists and the potential of the protection plates is relatively low, thereby playing a role in protecting the pole plates. The fuel cell can play a betteranti-corrosion role through adopting different types and different numbers of metal or alloy sheets. Therefore, the corrosion resistance of the fuel cell can be improved, performance output can be improved and the life can be prolonged.