144 results about "High power output" patented technology

The invention relates to the technical field of power supply, and discloses a humanoid robot modular distributed power supply system which comprises a power supply battery pack, a power management distribution board and a plurality of power utilization modules. The power utilization module at least comprises a control computing power unit, a sensing system, an upper limb joint module, a lower limb joint module and other joint modules; the power management distribution board is electrically connected with the power supply battery pack and each power utilization module. The power management distribution board comprises an MCU control unit, a DCDC power supply unit, a soft start unit, a high-power output unit and a voltage and current detection unit. Through a modular distributed power-on strategy and in combination with soft start pre-charging, voltage and current real-time detection and a regenerative braking absorption unit, voltage and current peaks generated at the moment of power-on of the capacitive high-power load are remarkably suppressed, the risk that a power device is damaged due to overvoltage and overcurrent impact is fundamentally avoided, and the reliability of the power device is improved. And the system reliability and the service life are greatly improved.

The application discloses a hybrid wave energy collection device, which comprises a spherical shell assembly composed of an upper spherical shell and a lower spherical shell, a wave energy capturing module arranged in the spherical shell assembly and used for capturing multi-directional wave energy and converting the wave energy into mechanical energy, and an energy conversion module used for converting the mechanical energy into electric energy. The wave energy capturing module converts wave motion into relatively straight-line motion and variable-radius swing motion. The wave energy capturing module comprises a moving rod, a top end of which is rotatably connected with an inner wall top end of the upper spherical shell; a support assembly, which comprises an upper support, a lower support and a plurality of connecting supports, a middle part of the upper support is provided with a through hole, a center of the lower support is provided with a mounting hole, and a bottom of the lower support is provided with a connecting rod; a sliding body, which is rotatably connected with the connecting rod, a lower end surface of the sliding body is a spherical surface and is matched with an inner wall of the lower spherical shell; the moving rod passes through the through hole of the upper support of the support assembly and is embedded in the mounting hole of the lower support; and the moving rod is coincident with a central axis of the support assembly. The application has the characteristics of strong working condition adaptability, high recovery efficiency, high power output density, high space position utilization rate and stable electric energy output and can provide power supply for low-power wireless sensors and provide a reliable technical scheme for realizing self-driving of wireless sensing equipment in water areas.

The invention discloses a pressure stress passivation method, which is applied to a thin barrier gallium nitride millimeter wave device, and is characterized in that a laminated silicon nitride passivation layer with pressure stress is formed on the surface of the device through the synergistic effect of interface passivation and stress engineering, so that device passivation is realized; wherein the laminated silicon nitride passivation layer comprises an interface function layer positioned on the bottom layer and a stress modulation layer positioned on the interface function layer; the method comprises the following steps of: depositing a first layer of silicon nitride film on a barrier layer of the gallium nitride millimeter wave device under the conditions of a high-frequency source and rich silicon to form an interface function layer; and depositing a second layer of silicon nitride film on the interface function layer, and carrying out stress regulation and control in the deposition process to form a stress modulation layer with compression stress. According to the method, current collapse can be effectively suppressed, meanwhile, the breakdown voltage is remarkably improved, and finally the thin-barrier gallium nitride millimeter wave device is enabled, so that the thin-barrier gallium nitride millimeter wave device has excellent performance of high power output and high stability in a high-frequency working mode.

The invention relates to the technical field of batteries, in particular to a battery power control method and device, electronic equipment, a medium and a program product. Acquiring the current vehicle state of the target vehicle; determining an output power limit level corresponding to a target battery in the target vehicle according to the current vehicle state of the target vehicle; and controlling the output power of the target battery according to the output power limit level corresponding to the target battery. Therefore, the acceleration performance can be guaranteed while the target vehicle runs normally, short-time high-power output of the target battery in an emergency can be met, meanwhile, the experience of operation consistency and stability of a driver is guaranteed, and the comfort and safety of the target vehicle are further improved.

This invention discloses a symmetrically stacked integrated 10,000-watt GaN solid-state microwave power source system. Multiple kilowatt-level GaN power devices are integrated in an array on a stacked microfluidic heat dissipation substrate. An array-type power control unit is connected to each kilowatt-level GaN power device to drive the power devices and control radio frequency signals. A separate microwave source integration unit is connected to each kilowatt-level GaN power device to receive output signals and achieve high-power output for the entire system. The overall solution of this invention adopts a symmetrical stacking structure, symmetrically mirroring and stacking the kilowatt-level GaN power units with the microfluidic heat dissipation substrate. Power combining is performed using a separate structure, ensuring efficient heat dissipation and power output capabilities. This achieves high integration and high reliability of the 10,000-watt solid-state microwave power source, significantly reducing the size of the power source.

The invention discloses a radio frequency microwave frequency multiplier which comprises an input resonance filter network, an oscillation amplification network and an output resonance filter network, the oscillation amplification network is adopted as a core architecture, and high power and high gain in a microwave frequency band can be achieved. And meanwhile, the self-adaptive linearization feedback network is used for adjusting the linearity component of the stacked field effect transistors at the bottom layer of the self-bias negative feedback amplification network, so that the whole radio frequency microwave frequency multiplier obtains good high gain, high linearity and high power output capability.

Apparatuses, systems and methods are described for optimizing power production from power generating devices by dynamically grouping the power generators. The power generating devices may be dynamically grouped into power sources according to a Maximum Power Point of the power generators, and the power output of the grouped generators may be controlled by alternatively connecting the output of the power sources. The output power may also be optimized by dynamically grouping the power generators, so that a maximum power may be generated.

The application belongs to the technical field of lithium ion batteries, and particularly relates to a silicon-carbon composite material and a preparation method and application thereof. The porous carbon material is contacted with a reaction gas to perform first chemical vapor deposition to obtain a first deposition product, the reaction gas comprising silane, a doping dilution gas and a carrier gas, wherein the doping source gas comprises diborane and / or phosphine; the first deposition product is contacted with a growth gas to perform second chemical vapor deposition to obtain a second deposition product, the second deposition product containing a graphene layer; and the second deposition product is contacted with a carbon source gas and an inert gas to perform third chemical vapor deposition to obtain the silicon-carbon composite material. The silicon-carbon composite material prepared by the application greatly improves the conductivity and structural stability of the material, so that the battery has high rate and long cycle life, and as a negative electrode material of a lithium ion battery, can meet the harsh demands of fast charging and high power output.

The invention discloses a power output control method and system, a storage medium and a program product, and relates to the field of power control. The method comprises the steps that firstly, a control system obtains the output voltage and the output current of a power supply end at the current moment, the feedback voltage of a load end and the set target voltage of the load end at the next moment, and a reference line impedance value is accurately calculated based on the difference value of the output voltage and the feedback voltage and the output current; then, the control system determines a compensation coefficient according to the voltage deviation absolute value and the current change rate; the virtual resistor compensates the direct current impedance of the line in a targeted manner, the voltage drop during continuous high-power output is reduced, the stable voltage quality of the load end is ensured, the dynamic damping characteristic is provided in the virtual inertia link, and the voltage overshoot or undershoot phenomenon easily occurring due to load sudden change is effectively inhibited; finally, the control system superposes the comprehensive voltage correction amount to the power supply reference voltage, thereby realizing fine adjustment of the power supply output voltage, and improving the reliability and quality of electric energy supply.

The invention provides an impeller and a wind turbine based on pneumatic function partitioning, and relates to the technical field of low-wind-speed wind turbines.The impeller comprises a rotating shaft, first blades and second blades, and the rotating shaft is suitable for being rotatably connected with a machine shell of the wind turbine; the first blade and the second blade are arranged in the axial direction of the rotating shaft and connected with the rotating shaft, the first blade and the second blade spirally extend in the axial direction of the rotating shaft, and the first blade is closer to an air inlet of the wind turbine than the second blade. The rotating radiuses of the first blades are gradually increased in the direction from an air inlet of the wind turbine to an air outlet of the wind turbine, and the multiple first blades are spaced in the circumferential direction of the rotating shaft and are arranged in an Archimedes spiral mode. And the rotating radiuses of the second blades are equal everywhere along the axial direction of the rotating shaft. According to the invention, high power output can be maintained while normal starting at a low wind speed is realized.

The invention discloses a lithium-sodium mixed positive pole piece, a preparation method thereof and a lithium metal battery, and belongs to the technical field of lithium batteries. The lithium-sodium mixed positive pole piece provided by the invention comprises a current collector and an active substance layer arranged on the current collector, the active material layer comprises a positive active material, a binder and a conductive agent; the positive active material comprises nickel cobalt lithium manganate and sodium vanadium phosphate, and the mass ratio of the nickel cobalt lithium manganate to the sodium vanadium phosphate is (60-92): (8-40). The lithium-sodium mixed positive electrode system constructed by the invention has a remarkable synergistic effect, not only has the advantages of high energy density and high power output of nickel cobalt lithium manganate, but also introduces excellent structural stability and safety characteristics of sodium vanadium phosphate, so that the finally prepared lithium metal battery has good low-temperature cycle performance, rate capability and safety performance.

The application discloses a kind of model construction method and device of wind power generation system, the method wind power generation system, at least including wind turbine and permanent magnet synchronous generator, the method includes: the mechanical characteristics of wind turbine is modeled according to momentum theory data to obtain wind turbine model;Maximum power output point of wind turbine is tracked by analyzing wind turbine model and using hill climbing search method;Ideal conditions met by permanent magnet synchronous generator are obtained;Under ideal conditions, three-phase voltage equation under natural coordinate system, flux linkage equation under natural coordinate system, electromagnetic torque equation of motor, mechanical motion equation of permanent magnet synchronous generator are established to obtain permanent magnet synchronous motor model.The application can reduce the loss generated by mechanical rotation in power generation process, so that the power generation efficiency of system is higher.

A joint servo module, belonging to the field of joint modules, particularly servo joint modules, is disclosed. It meets the market's urgent need for joint modules capable of precise control, high power output, and low energy consumption. It includes a reduction mechanism, an inner motor stator, an outer motor rotor, and electronic control components. The reduction mechanism is nested within the support base of the joint servo module housing, the inner motor stator is nested outside the support base, and the outer motor rotor is positioned within the cavity between the inner motor stator and the joint servo module housing. The outer motor rotor is connected to the reduction mechanism via a frame. The inner motor stator has a gear frame structure, consisting of an inner ring frame and a T-shaped core. The T-shaped core is 8.5mm high, 2.5mm wide, and 12mm thick, with a 2mm gap between the T-shaped ends at the top.

The invention relates to the technical field of power electronic conversion, and discloses a power conversion circuit and a UPS (Uninterrupted Power Supply) system, which realize an AC / DC (Alternating Current / Direct Current) rectification function in a mains supply mode and a DC / DC boosting function in a battery mode on a single set of hardware through innovative circuit design and device multiplexing on the premise of not obviously increasing hardware cost, and further realize a power conversion function in a battery mode. The system structure is simplified, the cost is reduced, and the power density is improved. According to the design, the multifunctionality of the existing device is fully utilized, and the problems of hardware redundancy and cost increase are avoided. Meanwhile, as the number of devices and the circuit complexity are reduced, the reliability of the system is improved, and the maintenance difficulty is reduced. Besides, due to the improvement of the power density, the whole power conversion circuit can support higher power output under the same size, or more compact design can be realized under the same power requirement, and powerful support is provided for integration and miniaturization of medium-power UPS power supply equipment.

This invention relates to a bifacial photovoltaic (PV) power generation module and a PV power generation system. The bifacial PV power generation module includes a mounting frame, photovoltaic cells, a first reflective mirror, and a second reflective mirror. A first mounting plate and a second mounting plate are connected to form a V-shape. n rows of first photovoltaic cells are mounted on the first mounting plate to form a first photovoltaic cell group, and n-1 rows of second photovoltaic cells are mounted on the second mounting plate to form a second photovoltaic cell group. n-1 rows of first reflective mirrors are mounted on the first mounting plate, and n rows of second reflective mirrors are mounted on the second mounting plate. The first reflective mirrors face the second cell group, and the second reflective mirrors face the first cell group. This invention's bifacial PV power generation module increases the amount of sunlight received by the photovoltaic cells, fully utilizing the power generation characteristics of both reflected and direct sunlight from the bifacial cells. It can generate electricity throughout the sunshine period, thus achieving higher power output and allowing users to obtain a higher return on investment.

The present disclosure provides a sequential power amplifier that achieves phase distortion compensation using sequential operation. [Solution] The sequential power amplifier according to this disclosure comprises a main amplifier that performs signal amplification at a constant load regardless of the input level, and an auxiliary amplifier that performs signal amplification at high power output when the input level is above a predetermined level, and whose phase distortion characteristics are different from those of the main amplifier. The phase distortion characteristics of the main amplifier are inverse to those of the auxiliary amplifier.

The invention relates to the field of massage machine cores, and aims at providing a single-motor multipurpose massage machine core which comprises a bottom plate, a walking mechanism, a kneading mechanism, a beating mechanism, a double-output-shaft motor, a transmission shaft and a compound gear. The double-output-shaft motor is mounted on the bottom plate, and a first output shaft and a second output shaft are arranged at the upper and lower ends of the double-output-shaft motor respectively; the first output shaft is fixedly connected with a first worm, and the second output shaft is fixedly connected with a first gear; the transmission shaft is rotationally installed on the bottom plate, and a first worm gear is fixed to the transmission shaft and is in meshing transmission with the first worm. The kneading mechanism and the walking mechanism are both connected with the transmission shaft; the compound gear is rotationally installed on the bottom plate, a beating transmission wheel is arranged on the beating mechanism, and the first gear is in transmission connection with the beating transmission wheel through the compound gear. Various massage functions can be achieved through the single motor, and the massage device has the advantages of being high in power output, stable in transmission structure and good in applicability.

A power tool is provided including a motor having an axial length of smaller than or equal to 65 mm and an outer diameter of smaller than or equal to 63 mm. The electric motor is configured to produce a maximum power output of greater than or equal to 2800 watts when the battery pack coupled to the battery receiver has a nominal voltage output of smaller than or equal to 60 volts and a rated capacity of approximately 9 ampere-hours (A.h.). Further, the motor drives an output spindle so as to maintain an output rotational speed of greater than 3,500 rotations-per-minute (RPM) within a torque range of 30 inch-lbs to 45 inch-lbs and exhibit a drop in the output rotational speed that is less than or equal to approximately 11.5% as the torque increases from 30 inch-lbs to 45 inch-lbs.

The invention discloses a self-starting high-voltage input auxiliary power supply, and relates to the technical field of switching power supplies. The power supply comprises a high-voltage starting circuit, a Buck circuit, a flyback power supply circuit and an LLC power supply circuit. The high-voltage starting circuit firstly carries out constant-current charging on a capacitor in the Buck circuit; when the capacitor voltage reaches a threshold value, the flyback power supply circuit is started to provide an isolation auxiliary power supply for the Buck circuit and the LLC power supply circuit; then the Buck step-down circuit takes electricity from the high-voltage input end and performs voltage-stabilizing charging on the capacitor; and finally, the LLC power supply circuit delays starting and provides final isolation output. According to the invention, through the mode of function decoupling and staged relay, the self-starting of wide-range high-voltage input can be realized only by a single high-voltage switch tube, the requirements of high-voltage input and high-power output are met, the cost and size of the system are effectively reduced, and the reliability of the starting process is ensured.

This invention provides a helical pressure mechanism and a helical pressure device. The helical pressure mechanism includes: a primary screw, a push rod, and a power mechanism. The primary screw has a primary screw hole. The push rod is threaded into the primary screw hole. The power mechanism includes a flywheel and a clutch. The clutch can selectively connect to either the primary screw or the push rod. When the clutch is connected to the primary screw, the rotational force of the flywheel is transmitted to the primary screw. The threaded engagement force between the primary screw and the push rod causes the push rod to move in the direction of pressure application. When the clutch is connected to the push rod, the rotational force of the flywheel is transmitted to the push rod. The threaded engagement force between the push rod and the primary screw causes the push rod to move in the opposite direction of pressure application. During the reciprocating movement of the push rod to achieve the stamping operation, the flywheel maintains rotation in the same direction, thus allowing the small-power motor to continuously store energy and achieve high-power output.

A method is presented for determining a setpoint signal of a wind energy conversion system. The method includes: providing a first input signal, comprising system frequency values of an electric power system, and a second input signal comprising an angular speed value of a wind energy conversion system; determining, from the first input signal, an intermediate signal comprising system frequency deviation values, the system frequency deviation values indicating deviations between the system frequency values and a target frequency value; determining, from the intermediate signal and the first input signal, a power correction signal comprising a first power value; determining, from the second input signal, a first reference signal comprising a second power value corresponding to a point of maximum power extraction of the wind energy conversion system; and determining a setpoint signal for setting an output power value of the wind energy conversion system.

The invention discloses a photovoltaic cell maximum power output control instrument based on a big cane mouse optimization algorithm, and relates to the field of photovoltaic cell test instruments. The objective of the invention is to solve the problems that portability, high precision and multiple functions of an existing photovoltaic test instrument are difficult to consider, and the maximum power point tracking efficiency is low and the stability is poor in a complex illumination environment. The controller comprises a shell, a main control module, a voltage and current detection module, an illumination intensity detection module, a voltage control module, an oled screen display module, a data transmission interface used for data transmission and communication and the like. An MPP tracking model based on a big cane-mouse optimization algorithm is provided, an illumination sudden change scene is adapted through an illumination gradient influence factor, and an illumination stable scene is adapted by combining an adaptive step length optimization perturbation and observation method. Microampere-level current measurement is achieved, MPP tracking time is prolonged by more than 70% when illumination suddenly changes compared with a traditional perturbation and observation method, tracking precision is high, work is stable, portability is achieved, cost is low, and all-weather effective detection on multiple photovoltaic cells is supported.

The invention relates to the technical field of new energy storage, in particular to a micro energy storage group series-parallel power balancing method and a micro energy storage system. According to the embodiment of the invention, the micro energy storage units with a droop output function are configured, the configured micro energy storage units are connected in series to form the micro energy storage group strings, the plurality of micro energy storage group strings are connected in series and in parallel to the inverter, and the intersection area of the power-voltage curve power constant section of each micro energy storage group string is identified through the MPPT function of the inverter. The micro energy storage group strings are controlled to output according to the respective maximum output power, additional control modules and communication modules are not needed, the system structure is simplified, the system cost is reduced, the problem that part of the micro energy storage group strings cannot output due to voltage deviation is effectively avoided, all the micro energy storage group strings give full play to the maximum power output capacity, and the system reliability is improved. The overall power utilization rate of the system is improved.

The application relates to the field of wireless communication technology and provides a power amplifier and a radio frequency chip, which comprise input matching circuit, power amplifier tube, output matching circuit, sampling amplifier tube, first mirror circuit, second mirror circuit, first resistor, first current source and second current source which are electrically connected in sequence; the first current source is used for generating bias current, and the second current source is used for generating reference current; the input end of the sampling amplifier tube is connected with the input end of the power amplifier tube and is used for sampling the current of the power amplifier tube; if it is detected that the current outputted from the output end of the first mirror circuit is greater than the reference current, the bias current of the first current source is reduced; and if it is detected that the current outputted from the output end of the first mirror circuit is less than or equal to the reference current, the bias current of the first current source is outputted to the first end of the first resistor. The application can protect the power amplifier when the power amplifier outputs high power and avoid failure.

The utility model discloses an electric propulsion system. In one example, a state machine generated by executable instructions may control a maximum power output of an electric propulsion system. The state machine allows for adding states and changing conditions to facilitate transitions between various states without the need to completely reconstruct the maximum power output method. The maximum output power of the electric propulsion system is controlled through the state machine, the technical achievement of creating a power control system can be achieved, expansion and modification of the system are relatively simple, and the system is convenient to upgrade.

The invention relates to the technical field of semiconductor lasers, in particular to a laser based on two annular planar dielectric gratings with different grating constants. The laser quantum well gain layer is arranged on the upper end surface of the substrate; the annular plane medium grating is arranged on an upper waveguide layer of the laser quantum well gain layer; the upper cladding is constructed above the annular planar dielectric grating through a semiconductor secondary epitaxy method; a top positive electrode; a bottom negative electrode; the AR anti-reflection interface is arranged at the laser output part of the annular plane medium grating, and the light output opening angle phi of the laser output part of the annular plane medium grating is larger than 0 degree and smaller than or equal to 360 degrees; and the HR high-reflection interface is arranged at a non-laser output part of the annular plane medium grating. The invention has the following beneficial effects: 1, all-solid-state large-angle output is realized; 2, high power output and high gain efficiency; 3, narrow linewidth characteristic and high wavelength purity; and 4, the structure is compact and the cost is low.

The application provides a modulation spectrum circuit and a power amplifier, wherein the modulation spectrum circuit comprises an operational amplifier, a field effect transistor, a first resistor, a first control circuit, a second control circuit, a second resistor, a third control circuit, a third resistor and a comparison circuit; a first end of the first resistor and a drain of the field effect transistor are connected and serve as an output end of the modulation spectrum circuit, and are used for outputting a modulation signal with a preset modulation spectrum to a final stage amplifier in the power amplifier; an input end of the second control circuit is used for connecting a feedback signal formed by an output current of the final stage amplifier; and the comparison circuit is used for controlling the conduction or the turn-off of the first control circuit, the second control circuit and the third control circuit. The modulation spectrum circuit of the application can not only meet the modulation spectrum under the condition of large power output, but also optimize the modulation spectrum under the condition of small power output.

The invention provides an electrically-driven tractor and a control method thereof, and relates to the field of agricultural machinery. The electric drive tractor comprises a hinged frame, a PTO drive and power generation unit arranged on the hinged frame, a battery pack and four drive wheels, two front wheels are each provided with a wheel edge motor, and two rear wheels share one drive motor; the frame comprises a front frame and a rear frame which are hinged along a vertical shaft; the tractor further comprises a steering motor used for driving the front frame and the rear frame to rotate relatively to achieve bowing steering. The control method comprises a distributed driving strategy, a driving and steering cooperation strategy, an electric quantity correction strategy and a stability control strategy. The electrically-driven tractor belongs to an extended-range tractor, high power output, precise control, efficient operation, silence, environmental protection and high cross-country performance of the motor can be achieved, the problems of battery capacity and operation time and place are solved through the power generation unit composed of the diesel engine and the generator, and the tractor is particularly suitable for farmland operation of complex terrains such as mountainous regions, sloping fields and hills.

when Electric Vehicle are "Ultra Fast charged" or in case it needs extreme Power output, the drive Battery will heat up significantly. if the heat cannot be removed quickly enough, the heat can lead to degradation of Battery performance and potential risk of thermal Runaway. Furthermore At cold wheather under 0C degrees most lithium battery cells cannot be fast charged, risk of lithium (Li) plating and Battery in shortage range. The present Invention is plurality of Battery Cells Casing together with Liquid Channels constructed and integrated into Battery Module Housing or into Battery Pack Housing. This innovative solution enhance Liquid cooling and Heating of Battery Cells efficiently at optimal condition.

The embodiment of the utility model relates to a vehicle-mounted high-power long-endurance power supply system, which supplies power through a diesel generator and normally supplies oil to a unit when air enters the generator in a manner of additionally arranging an electronic oil pump and a tail gas purification device, so that the stable operation of the generator unit is ensured, and the tail gas emission is reduced. Compared with an existing battery pack, the power supply system can support high-power output, the cruising ability is high, energy supplementation is simple and rapid, and continuous operation of the system can be guaranteed. And the battery does not need to be replaced or charged midway. Compared with a common generator power supply system, the system does not generate waste gas and is lower in noise. The problems that the generator cannot be normally started after being placed for a long time and cannot work normally in a bumpy scene or when air enters the generator are solved, and power supply is more stable and reliable.