25results about How to "Improve power performance" patented technology

The invention provides a heterojunction cell and a preparation method and application thereof, and belongs to the technical field of photovoltaic.The preparation method comprises the steps that first intrinsic amorphous layers are deposited on the surface and the side face of one side of a substrate, and a second intrinsic amorphous layer and an N-type doped microcrystalline silicon layer are sequentially deposited on the surface and the side face of the other side of the substrate; depositing a P-type doped microcrystalline silicon layer on the surface of the first intrinsic amorphous layer and the side surface of the substrate, wherein the P-type doped microcrystalline silicon layer is overlapped with the N-type doped microcrystalline silicon layer on the side surface of the substrate; preparing a back TCO film layer and a front TCO film layer; preparing metal electrodes on the surfaces of the back TCO film layer and the front TCO film layer respectively; the deposition temperature of the P-type doped microcrystalline silicon layer is less than 160 DEG C and greater than or equal to 130 DEG C. Through low-temperature deposition of the P-type doped microcrystalline silicon layer, the problems that the efficiency of the heterojunction cell is reduced and the power of the assembly is reduced after lamination are avoided, so that the efficiency, the thermal stability and the power of the assembly of the heterojunction cell are effectively improved.

The invention relates to an alkaline earth metal ion doped titanium-based phosphate composite material as well as a preparation method and application thereof, and belongs to the technical field of sodium ion batteries. The chemical formula of the alkaline earth metal ion doped titanium-based phosphate composite material is KxMyTiOPO4 / C, M is selected from one or more of beryllium, magnesium, calcium, strontium and barium, x is larger than or equal to 0.8 and smaller than or equal to 0.95, y is larger than or equal to 0.001 and smaller than or equal to 0.1, and the values of x and y meet the charge balance of the chemical formula. By doping alkaline earth metal ions, the lattice structure is effectively stabilized, and the exchange of K-Na ions is avoided, so that the cycling stability of the battery is remarkably improved, and the service life of the battery is remarkably prolonged.

The present application relates to the technical field of batteries, and provides a battery cell, a battery, and an electric device. The battery cell comprises an electrode assembly; the side of a first electrode plate of the electrode assembly in the width direction is provided with a plurality of soldering portions, and the plurality of soldering portions are provided at intervals in the length direction of the first electrode plate; the first electrode plate comprises a winding start end and a winding ending end, one of the plurality of soldering portions closest to the winding start end is a first soldering portion, and one of the plurality of soldering portions closest to the winding ending end is a second soldering portion; the first electrode plate comprises a main body segment from the first soldering portion to the second soldering portion, the main body segment is divided into a plurality of sub-segments having a length of L, and the total length of each sub-segment soldering portion is not less than 5%*L, wherein 200 mm ≤L ≤ 1200 mm, so that the distribution of soldering portions formed by soldering the first electrode plate and a current collecting component is more reasonable, the internal resistance of the battery cell is reduced, and the actual overcurrent requirement can be satisfied, thereby improving the power performance of the battery cell.

The invention belongs to the technical field of magnesium ion batteries, and particularly relates to an in-situ synthesized aqueous magnesium ion battery organic composite negative electrode material, a preparation method and a negative electrode. The negative electrode material provided by the invention is a negative electrode material PDBM (at) KB obtained by introducing a formaldehyde solution into a suspension liquid of 2, 5-dihydroxy-1, 4-benzoquinone and conductive carbon which are uniformly mixed, carrying out quinone-aldehyde condensation polymerization under the catalysis of glacial acetic acid and carrying out in-situ synthesis; meanwhile, the distribution of KB in the negative electrode material PDBM (at) KB is further improved through the technological means of ultrasonic dispersion, vacuum infiltration and the like, a rapid ion transmission channel is constructed, the utilization rate of PDBM active substances is remarkably increased, and the aqueous magnesium ion battery with the PDBM / KB as the negative electrode shows high capacity, long circulation, high rate performance and high power performance; therefore, the technical problem that an existing magnesium ion battery electrode material is low in performance is solved.

A module-based energy system having a plurality of converter-source modules is provided. The converter-source modules may each include an energy source and a converter. The system may further include control circuits for the modules. The modules may be arranged in various ways to provide single-phase AC, multi-phase AC and / or DC outputs. Each module may be independently monitored and controlled.

The utility model relates to a variable air inlet system which is arranged in an air filter of a motorcycle engine. The variable air inlet system comprises a mounting part, a driver and a lengthening pipe. The mounting part is arranged in the air inlet box, the driver is arranged on the mounting part, and the lengthening pipe acts under the driving force of the driver, so that the lengthening pipe is selectively combined with or separated from the air inlet pipe. When the lengthening pipe is combined with the air inlet pipe, the lengthening pipe and the air inlet pipe form a total air inlet length, and the difference between the total air inlet length and the pipe length of the air inlet pipe is the effective pipe length of the lengthening pipe. And the effective pipe length of the lengthening pipe is not shorter than one third of the pipe length of the air inlet pipe or is not longer than the pipe length of the air inlet pipe. Therefore, the utility model can ensure that the optimal air inlet efficiency points of the lengthening pipe and the air inlet pipe in a separation state and a combination state have a certain rotation speed interval fall, and the optimal air inlet point in the combination state is in a rotation speed interval commonly used by a vehicle, so that power output is maintained in a linear torsion mode; and the phenomenon that the torsion is abnormally lowered at a specific rotating speed is avoided.

The present invention belongs to the technical field of microwave sensors, and in particular, relates to a micro-power microwave sensor and a discontinuous Doppler signal micro-power control method, including: a Doppler microwave module, which is used to detect an object to be detected in a preset detection area during operation, and generate an original analog signal according to the object to be detected; a microwave main control module, which is connected to the Doppler microwave module and is used to send a pulse power supply signal to the Doppler microwave module when awakened, so that the Doppler microwave module works when receiving the pulse power supply signal, and receives the original analog signal generated by the Doppler microwave module; the microwave main control module reawakens after a specific wake-up time after entering a dormant state. The present invention realizes the wake-up-processing-signal-sleeping working mode of the microwave main control module, that is, the microwave main control module also works intermittently, thereby greatly improving the low power consumption effect and meeting the use requirements.

Composites of silicon and various porous scaffold materials, such as carbon materials comprising micropores, mesopores and / or macropores, and methods of making the same are provided. The compositions have utility in various applications, including electrical energy storage electrodes and devices comprising electrical energy storage electrodes.

This application discloses an engine control method, device, electronic equipment, and vessel, relating to the field of engines. When a risk of capsizing is determined based on the hull's tilt parameters in various directions, the engine can be promptly shut down to prevent cylinder scoring and bearing damage due to insufficient oil lubrication. If no capsizing risk is determined, the engine speed adjustment coefficient is adjusted according to the degree of tilt in each direction, and the engine speed is adjusted accordingly to meet the power requirements of the hull under tilt conditions. This allows for different degrees of engine speed adjustment based on the degree and direction of tilt when the hull's tilt is within certain safety limits, resulting in more stable and reliable power performance during operation, better meeting the vessel's power needs.

The present invention discloses a processing technology for improving the capillary function of a heat pipe braided wire, including a main control, self-checking, interruption control, normal operation, writing, heating, timing, an oven, a fence plate, a heating tube, a temperature sensor, a tray rack, an initial braided rope and a processor, wherein the main control controls the oven to operate normally. The present invention is provided with the main control, a temperature sensor and a processor; the advantage is that the capillary function of the capillary structure braided wire of the heat pipe of a tablet, a handheld computer and a mobile phone is improved in that the braided wire will crystallize in high-temperature catalysis to form a stronger capillary function, increase high-temperature catalysis, release the internal stress of the braided wire in high-temperature catalysis, and the braided wire will be straighter and less likely to spread out; the braided wire after high-temperature catalysis is easier to adhere to the copper tube during sintering, and the capillary structure is more solid; the braided wire after high-temperature catalysis will produce a stronger capillary function, so that the power performance of the product can be improved by 2 to 3 watts on the original basis; the high-temperature catalysis process is simple and the cost is low.

The invention discloses an electrolyte additive, an electrolyte, a battery and electric equipment. The electrolyte additive comprises a first additive and a second additive, the first additive has a structure as shown in a formula (I); # imgabs0 # formula (I); r < 1 >, R < 2 >, R < 3 >, R < 4 > and R < 5 > are respectively and independently selected from hydrogen, hydroxyl, alkyl of C1 to C10 or alkoxy of C1 to C10; the second additive comprises a compound with a cyclic structure, and the cyclic structure contains sulfur atoms. The electrolyte additive can effectively regulate and control the film-forming property of an SEI film, improve the stability of the SEI film, reduce the interface impedance and improve the power performance, the rate capability and the cycle performance of a battery, and is high in fast charging capacity.

The application belongs to the technical field of lithium batteries, and relates to a preparation method of a double-coated silicon-carbon composite material, an electrode and a lithium battery.The method comprises the following steps: placing a lithium dopant and a MOF material in a first organic solvent, adding a template agent and a catalyst, reacting, filtering, freeze-drying and obtaining a gel composite; in an inert atmosphere, the gel composite is heated to a first preset temperature, carbon dioxide is introduced at a preset flow rate, the temperature is lowered, the gel composite is soaked in mixed acid, pickling is performed, vacuum drying is performed, and a porous carbon composite material is obtained; liquid silane, a phosphine derivative, a dispersing agent, the porous carbon composite material and a silane coupling agent are added to a second organic solvent, spray drying is performed, primary carbonization is performed, and a silicon-carbon precursor material is obtained; resin is dissolved in a third organic solvent, a fast ion conductor and the silicon-carbon precursor material are added, secondary carbonization is performed, the temperature is lowered to a second preset temperature, a reducing gas is introduced, and a double-coated silicon-carbon composite material is obtained; the conductivity is improved, the interface stability is improved, and the full charge swelling is reduced.

The present invention provides a positive electrode plate and a preparation method thereof and a lithium-ion battery, wherein the positive electrode plate comprises a current collector and a composite positive electrode active coating disposed on at least one side of the current collector; the composite positive electrode active coating comprises a first active coating and a second active coating, wherein the first active coating is disposed on the surface of the current collector, and the second active coating is disposed on the surface of the first active coating away from the current collector; the first active coating comprises a first cobalt-containing positive electrode material and a second cobalt-containing positive electrode material, wherein the first cobalt-containing positive electrode material and the second cobalt-containing positive electrode material have different cobalt contents and particle sizes; the second active coating comprises a third cobalt-containing positive electrode material and a fourth cobalt-containing positive electrode material, wherein the third cobalt-containing positive electrode material and the fourth cobalt-containing positive electrode material have different cobalt contents and particle sizes. The present invention can reduce the cost of positive electrode materials while ensuring energy density and can improve battery performance by combining four cobalt-containing positive electrode materials.

The utility model relates to the technical field of fire extinguishing monitoring, and particularly discloses a starting assembly used for being linked with a fire extinguishing device, which comprises a starting device used for controlling the fire extinguishing device to start and a state indication assembly arranged on the outer side of the starting device, the starting device comprises a shell, a detachable top plate is arranged at the top of the shell, and the detachable top plate and the shell are fixed through a fastener; an inner cavity is formed in the inner side of the shell, an energy storage component is installed on the inner side of the inner cavity, two clamping plates are arranged at the positions, located at the energy storage component, of the inner side of the inner cavity, and a containing space is formed between the two clamping plates and used for being matched with the energy storage component; the lamp panel is matched with the first abutting frame and the second abutting frame, the battery can be limited under the condition that battery connection is met, the stable electrifying effect is achieved through fixing of the top plate and contact between the battery and the metal electrode, the lamp panel is fixed in a magnetic attraction mode, treatment can be conducted according to different conditions, and the lamp panel is convenient to use. And the use requirements are met.

This disclosure discloses an aqueous high-voltage electrolyte and its preparation method, as well as a supercapacitor, belonging to the field of supercapacitor technology. The preparation method of the aqueous high-voltage electrolyte includes: adding an electrolyte salt to deionized water and stirring until the electrolyte salt is completely dissolved to obtain a mixed solution; adding a high-voltage additive and a hydrogen-eliminating additive to the mixed solution, and stirring to obtain the aqueous high-voltage electrolyte. This disclosure utilizes the synergistic effect of two additives, which preferentially adsorb at the electrode / electrolyte interface. By adjusting the interfacial double-layer structure, disrupting the hydrogen bond network of water molecules, or forming a protective layer, these additives effectively increase the water decomposition overpotential, thereby achieving a stable widening of the operating voltage window without significantly altering the basic composition and physicochemical properties of the electrolyte.

The utility model discloses a radio frequency microwave power synthesis device which comprises a shell and a combining unit, and the shell is made of metal materials. The combining unit comprises a first conductor, a plurality of second conductors and a heat dissipation part, the first conductor is arranged in the shell and comprises a first conductor column and a second conductor column which are coaxially arranged, one end of the first conductor column is connected with one end of the second conductor column, and the other end of the second conductor column is configured as an output end; the other end of the first conductor column is configured to be connected with one end of the heat dissipation part, the other end of the heat dissipation part is configured to be connected with the shell, the heat dissipation part is made of a metal material, and the electrical length of the heat dissipation part is 0.15-0.5 working wavelength; the second conductors are distributed in the radial direction of the first conductor, one end of each second conductor penetrates through the shell to be connected with the first conductor column, and the other end of each second conductor is configured to be an input end. The power synthesis device provided by the utility model is good in heat dissipation performance and can be applied to high-power synthesis.

The application relates to an insulated gate high electron mobility transistor and a preparation method thereof, and the preparation method comprises the following steps: 1, epitaxial material growth; 2, vertical structure realization; 3, drain electrode manufacturing; 4, source electrode manufacturing; 5, ohmic metal annealing; 6, dielectric layer deposition; 7, gate electrode manufacturing; and 8, manufacturing of an interconnection lead. The application can solve the problems that the threshold voltage of a conventional GaN-based high electron mobility transistor device is less than 0 and the withstand voltage capacity is poor.

The invention discloses a reconfigurable direct radio frequency modulation transmitter architecture applied to multiple modulation modes, which comprises an L modulation link and an H modulation link, and each link is subjected to phase modulation and amplitude modulation by an I path and a Q path respectively. Through the arrangement of a reconfigurable switch, when only an L link participates in work, QPSK, STAR-QAM, 8PSK and 16-QAM modulation schemes are generated; and when the L link and the H link both participate in work, a 16-QAM (Quadrature Amplitude Modulation), 64-QAM and 256-QAM higher-order modulation scheme is generated. A reconfigurable three-path Doherty power amplifier output inverter network structure is provided, and when a modulation link generates a low-order modulation scheme, the output is a two-path series Doherty power amplifier structure; and when the modulation link generates a high-order modulation scheme, the output is a three-path series-parallel Doherty power amplifier structure. The overall efficiency of the transmitter is improved while the loss and the power consumption are reduced.

This application belongs to the field of battery technology, and particularly relates to silicon-carbon composite materials and their preparation methods, electrodes, and batteries. The method includes: mixing asphalt with potassium hydroxide and dopants uniformly, heating to a first preset temperature, passing a crosslinking agent mixed gas at a first preset flow rate for first activation, cooling to obtain asphalt-based porous carbon; adding the asphalt-based porous carbon to an aldehyde compound solution, then adding a phenolic compound and a catalyst and mixing uniformly, performing a hydrothermal reaction, filtering, and performing a second activation to obtain a hard carbon-coated soft carbon porous carbon composite material; immersing the porous carbon composite material in a liquid silane solution and reacting under closed negative pressure to obtain an intermediate material; heating the asphalt to a molten state, then adding the intermediate material and an organoniobium compound and stirring uniformly to perform carbonization to obtain a silicon-carbon composite material; possessing low expansion, high pore volume, low impedance, and high compaction density, thus improving the electrochemical performance of the battery.

The invention discloses a silicon-based negative electrode material with high specific volume and high power and a preparation method of the silicon-based negative electrode material, and relates to the technical field of negative electrode materials. The silicon-based negative electrode material sequentially comprises a second carbon layer, a first carbon layer, a large-length-diameter-ratio conductive agent winding layer and an inner core from outside to inside, wherein the inner core is a carbon skeleton adsorbed with silicon particle units. The invention also provides a preparation method of the silicon-based negative electrode material. According to the invention, the problem of silicon material aggregation stress concentration is solved through a carbon skeleton, the problem of coating uniformity is solved through gas-phase carbon attachment, and the problem of coating shell strength is solved through solid-phase coating, so that expansion of the silicon material can be limited, the cycle performance is improved, contact between the silicon material and an electrolyte is isolated, and side reaction and gas production are avoided.

The utility model relates to a variable air inlet system. The variable air inlet system comprises a mounting part, a driver, a sliding rail, a lengthening pipe and a buffering mechanism, the driver comprises a driving part and a push rod, the driving part is closer to the air inlet of the engine than the push rod when being observed from the side view direction, and the driving part can enable the push rod to generate linear displacement. The sliding rail is arranged on the installation part through a sliding rail support, and the sliding rail support is provided with a lengthening pipe stopping face. The lengthening pipe is provided with a connecting part. And the buffer mechanism is arranged on the connecting part of the lengthening pipe or the lengthening pipe stop surface. Wherein the push rod is actuated by the driving force of the driving piece, so that the lengthening pipe can be selectively combined with or separated from the air inlet pipe, and during separation, the connecting part is propped against the backstop surface of the lengthening pipe, and buffering force is provided by the buffering mechanism, so that the power performance of high and low rotating speeds and the oil consumption level of an engine can be simultaneously improved, and high-rotating-speed vibration can be overcome; the method is an optimal design.

The present invention provides a multi-ion doped pre-lithiation silicon-oxygen material and a preparation method thereof, comprising the following steps: grinding silicon dioxide and magnesium copper powder to obtain material A; adding lithium sheets to an ether-containing solution, and adding lithium borate to obtain a boron-containing pre-lithiation solution B; then adding powder material A to solution B for pre-lithiation; and finally coating nitrogen-containing amorphous carbon on its surface by vapor deposition to obtain a multi-ion doped pre-lithiation silicon-oxygen material. The composite material improves the electronic conductivity of the material by copper doping and forms magnesium silicate by magnesium doping, which has good stability, and exerts the synergistic effect between the two elements to improve the cycle and power performance of the composite material; and combines the liquid phase pre-lithiation of the material to improve the pre-lithiation depth and integrity of the material. The composite material prepared by the composite material has the characteristics of high first efficiency, good power performance, excellent cycle performance, etc. when applied to lithium-ion batteries.

The utility model relates to the technical field of communication, and provides a filter which comprises a cavity, a first resonant part, a second resonant part and a conductive assembly, the cavity is provided with a first resonant cavity and a second resonant cavity, and the first resonant part and the second resonant part are respectively installed in the first resonant cavity and the second resonant cavity. The distance between the first resonance part and the second resonance part is larger than or equal to two times of the diameter of the first resonance part or the second resonance part, and the conductive assembly is connected with the first resonance part and the second resonance part so that the first resonance part and the second resonance part can be coupled. Therefore, the first resonant part and the second resonant part which are far from each other can be coupled through the conductive assembly, so that the first resonant part and the second resonant part can be flexibly arranged far from each other, the cavity arrangement is more flexible, the free space of the cavity is fully utilized to accommodate the first resonant part and the second resonant part, and the space utilization rate of the cavity is improved; therefore, the insertion loss, suppression and power performance of the filter is improved.

The invention provides a timing cover cap, an engine and a vehicle, a cover cap body of the timing cover cap comprises an inner side and an outer side, and the inner side is connected with a crankcase and defines a cavity for containing blow-by gas; the cover cap body is provided with a first through hole used for supplying air to the cavity, the first through hole is provided with a first end and a second end, the first end is communicated to the outer side to receive external air, and the second end is communicated to the inner side to supply air to the cavity. According to the timing cover cap, the air supply channel is internally arranged through the first through hole, an independent external air supply pipeline is not needed, the peripheral arrangement of the whole engine is simplified, and the cost of the whole engine is reduced. Meanwhile, due to the fact that the air supply channel is internally arranged, when passing through the first through hole, the external atmosphere makes contact with the timing cover and the internal air for preheating, the temperature difference between the external atmosphere and the internal air of the crankcase can be reduced in the preheating process, and condensate water is prevented from being generated.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a method for improving cycle performance and power performance of a lithium ion battery. The invention relates to application of a porous foil and design of a multi-gradient pore positive pole piece. The porous foil is obtained by chemical etching of an acid solution, and then is coated with a carbon layer to increase the stripping force between the foil and the material, so that the pole piece is prevented from falling off in the circulating process, and the circulating performance is improved; meanwhile, through the multi-gradient pore design of the positive electrode, the corresponding power performance can be improved while the battery capacity is considered; and the migration rate of the conductive agent to the surface of the pole piece can be effectively reduced, so that the conductive agent is uniformly distributed in the pole piece, and the rate capability of the battery is finally improved.