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

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.

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 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.

A composite magnetic material of the present invention comprises the following components: 50-70% of iron powder, 20-40% of carbonyl iron powder, 5-15% of iron-silicon alloy powder, wherein the silicon content of iron-silicon alloy powder is 6-7% %, the surface of this composite magnetic material is phosphated with a phosphate conversion coating, and the outer surface is protected with an inorganic coating layer. A preparation method of a composite magnetic material of the present invention includes the following steps: (1) taking and mixing materials; (2) roasting; (3) phosphating; (4) inorganic coating; (5) cooling and screening; )bake. The invention optimizes the preparation method, and the obtained composite magnetic material has excellent properties of balancing high conductance and high saturation characteristics.

A file processing method, device, storage medium, and electronic device provided in an embodiment of the present application, the method calls the MTP driver to enable CPU multi-core and improves the performance output of the CPU when an MTP-based file processing task start command is detected ; Running the file processing task on the large core of the CPU, wherein the MTP driver continues to detect the file processing task; when the MTP driver detects that the file processing task ends, reduce the performance output of the CPU. By adopting the above technical solution, the speed of file processing operation can be improved.

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 relates to a cathode side structure of an integral reversible fuel cell membrane electrode, which is placed on the cathode side of an integrated reversible fuel cell, and includes a gas diffusion layer and a composite functional catalytic layer with alternating hydrophilic and hydrophobic properties; the gas diffusion The layer comprises a gas diffusion support layer with alternating hydrophilic and hydrophobic properties with a pore diameter greater than 25 μm and a gas diffusion microporous layer with alternate hydrophilic and hydrophobic properties with a pore diameter of 0.1-10 μm. Compared with the prior art, the invention has the advantages of separation and positioning transmission of water and gas on the cathode side of the membrane electrode, improves battery water management and mass transfer efficiency, and ensures high-performance output of the reversible fuel cell.

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.