21results about How to "Small working current" patented technology

The invention discloses a two-dimensional magnetic material device and a preparation method and a regulation and control method thereof, and the regulation and control method comprises the steps: enabling ionic liquid to cover the surface of a two-dimensional magnetic material, enabling the ionic liquid to be in contact with a grid electrode, a source electrode, a drain electrode and the two-dimensional magnetic material, and continuously applying current from the grid electrode to the source electrode and to the drain electrode, and the regulation and control of the two-dimensional magnetic material device are completed. According to the two-dimensional magnetic material device and the preparation method and the regulation and control method thereof provided by the invention, the ionic liquid containing the cationic molecular chains with different lengths is selected to perform intercalation on the two-dimensional magnetic material device, so that regulation and control on the two-dimensional magnetic material device are realized, and the regulation and control flexibility of the two-dimensional magnetic material is greatly improved; and the coercive field, the magnetic anisotropy energy and the carrier concentration of the two-dimensional magnetic material can be changed.

The application provides a non-liquid-cooled heavy-current connector, relates to the technical field of electric connectors, and solves the problem of small charging power of the existing liquid-cooled charging connector. The device comprises a socket assembly and a plug assembly which are matched with each other, and at least two groups of power terminals are arranged on the socket assembly and the plug assembly. Each group of power terminals comprises a positive power terminal and a negative power terminal. The cross-sectional area of the power terminal is not less than 120 mm2, and the power terminal can bear a working current of not less than 300 A. The application adopts the setting mode of multiple groups of power terminals to reduce the heat generation of each power terminal by several times, so that the liquid-cooled charging connector can also realize high-power charging.

The present disclosure proposes a wireless charging terminal, including: a charger, a wireless transmission controller and a transmitting coil; wherein the charger is used to output a first voltage to the wireless transmission controller; the wireless transmission controller is used to boost the first voltage to obtain a second voltage; the second voltage is greater than the first voltage; the transmitting coil is used to output wireless charging capability at the second voltage. When high-power charging is performed, the embodiment of the present disclosure outputs a large voltage through the wireless charging terminal for wireless charging transmission, thereby reducing the operating current of the transmitting coil on the wireless charging terminal, thereby reducing the heat generated by the wireless charging terminal and making the charging system more stable.

This invention discloses a high-mobility spin field-effect transistor (SFET), comprising a source electrode, a drain electrode, a gate electrode, a semiconductor channel, and a substrate. Compared to existing SFETs based on a single semiconductor channel, this semiconductor channel structure offers advantages such as tunable band structure, high mobility, tunable carrier concentration and type, and long spin diffusion length. Compared to traditional substrate-based SFETs, this invention introduces a substrate with piezoelectric properties, allowing for the modulation of carrier spin transport within the semiconductor channel through the surface polarization electric field of the substrate. This effectively reduces the turn-on or turn-off voltage and improves gate control. Compared to existing SFET fabrication processes, this invention optimizes the crystal quality of the spin tunneling layer, increases carrier spin polarization, thereby improving the device's on / off ratio and reducing operating current.

According to the vertical electronic buoy with the multiple hook biting reminding functions, the buoy tail brightness of the electronic buoy can be automatically set according to the illumination condition of the fishing environment, and after the buoy tail brightness is set, the buoy tail brightness is basically not affected by voltage changes of a battery. The microprocessor in the electronic buoy monitors the working voltage value of the miniature battery all the time in the whole fishing process, the pulse width modulation (PWM) technology is adopted to drive the green light emitting diode used for displaying the buoy purpose to emit light, and the purpose of reducing the brightness of the green light emitting diode is achieved. Three different float tail brightness including high brightness, medium brightness and low brightness can be set to adapt to fishing environments under different illumination conditions, so that the optimal float observation effect is achieved, and the fishing comfort is improved. Three different light-emitting reminding modes of transient light emitting, continuous light emitting and continuous flickering are adopted for representing the change degree of the movement state of the buoy, a fisherman can conveniently judge the specific condition that a fish bites a hook, a corresponding rod lifting strategy is selected, the fishing pleasure is improved, and fool-type fishing is avoided.

The invention provides an air conditioner and a control method and device thereof, a storage medium and a computer program product, an outer fan of the air conditioner is arranged in an environment easily making contact with water, and the control method comprises the steps that when the air conditioner operates, the working current of the outer fan of the air conditioner is detected; whether the detected working current of the outer fan is larger than or equal to a first preset current limiting value or not is judged; and if it is judged that the working current is larger than or equal to the first preset current limiting value, the rotating speed of the outer draught fan is adjusted and / or the outer draught fan is controlled to stop according to the working current. According to the scheme provided by the invention, the safety and reliability of wading over-current protection of the air conditioner outer fan can be improved.

The utility model relates to an ion array charging device and an electrostatic filtering device. The ion array charging device comprises a plurality of emission electrodes and a plurality of guide electrodes, and the emission electrodes and the guide electrodes are alternately arranged in parallel at intervals. Potential difference exists between the emission electrodes and the guide electrodes, at least one emission electrode is a needle row, the needle row comprises a plurality of conductive needle-shaped materials which are arranged at intervals, and at least one guide electrode is a conductive material without a tip. Therefore, the high-power lithium ion battery has relatively good charging capability, can reduce working current, inhibits ozone generation, and prolongs the service life of a product.

The utility model discloses a hard wire wake-up protection circuit and a vehicle, and relates to the field of vehicle control. The introduction of the voltage detection circuit can detect the voltage of the hard wire wake-up signal output by the controlled end of the vehicle, and when the voltage reaches the preset voltage, the voltage is output to the first switch tube; therefore, after the vehicle stops running, even if the voltage of the storage battery is unstable, the wake-up signal can be output when the voltage reaches a proper threshold value, so that the problems that the first switching tube works in a variable resistance region and the consumed current is too large due to the unstable voltage are avoided; in addition, the preset voltage ensures that the working current of the first switch tube is smaller than the preset current, so that the first switch tube can be ensured to be in a normal working range and cannot be overheated and damaged due to overlarge current, and the stable work of the motor controller and the whole hard wire wake-up circuit is protected.

The invention provides a short-circuit protection circuit, a power circuit and power electronic equipment. The short-circuit protection circuit can comprise a voltage dividing module, a voltage stabilizing module and a judging module. The voltage dividing module is used for outputting working current to the voltage stabilizing module according to the first working voltage. The voltage stabilization module is used for outputting a second working voltage to the judgment module according to the working current. The judgment module is used for outputting a short-circuit protection signal according to the second working voltage. According to the short-circuit protection circuit, the voltage stabilizing module is arranged to control the short-circuit protection time, compared with the prior art that the short-circuit protection time is controlled by adopting a clock signal, the cost of the short-circuit protection circuit is greatly reduced, and short-circuit protection false triggering of the driven power tube in the opening transient state can be thoroughly avoided; and the reliability of the short-circuit protection circuit is improved.

The application is suitable for the technical field of switching power converter, and provides a negative voltage charge pump circuit and a switching power converter. The negative voltage charge pump circuit adds a clock modulation module, a reference voltage generation module, a comparison module, a fourth driving module, a fifth power tube, a sixth power tube and a seventh power tube on the existing charge pump. When the negative voltage charge pump circuit enters a light load working condition, the large-size power tube and its driving module are closed, only the small-size power tube is kept working, and the small-size power tube automatically judges whether to work according to the absolute value of the output voltage, so that the working current of the negative voltage charge pump circuit is greatly reduced, and the conversion efficiency of the negative voltage charge pump circuit in the light load is improved. At the same time, the pulse width modulation processing is carried out by means of the narrow pulse modulation unit in the clock modulation module, the clock signal for driving the small-size power tube is optimized, and the circuit power consumption in the light load is further reduced.

The utility model discloses a medium-wave antenna automatic switching circuit which comprises an A machine, a B machine, a dummy load and an antenna, a switching execution device is arranged between the A machine and the dummy load and between the B machine and the dummy load, and a switching execution device is also arranged between the A machine and the antenna and between the B machine and the antenna. And the signal sampling circuit is connected with the machine A and the machine B, and the signal sampling circuit is used for generating two available transmitter state indication signals according to the working states of the machine A and the machine B. The antenna switching circuit has an intelligent automatic switching function, so that the startup or the switching of the main and standby machines does not need human intervention, and the operation is convenient and fast; under the maintenance mode, manual switching can be achieved, and maintenance machines can be selected conveniently; and the panel indication is visual and clear, and the operation condition is stable and reliable.

The embodiment of the invention discloses a display module, a preparation method of the display module and a display device. The display module comprises a display panel, a bonding element and a conductive adhesive layer, the conductive adhesive layer is arranged in the bonding connection area of the display panel; the bonding element is in bonding connection with the display panel through the conductive adhesive layer; the conductive adhesive layer comprises a first film layer, a second film layer and a plurality of self-recovery conductive particle structures; the plurality of self-recovery conductive particle structures are arranged between the first film layer and the second film layer in an array. According to the technical scheme of the embodiment of the invention, the conductive adhesive layer is arranged in the bonding connection area of the display panel, and the self-recovery conductive particle structure is arranged in the conductive adhesive layer, so that the module is protected from being damaged when a short-circuit fault occurs, the display module can work normally after being electrified again, and the reliability of the display module is improved.

A protection method for a radio frequency system, a wireless communication device, and a power amplifier is provided. The radio frequency system includes: a radio frequency path for transmitting a radio frequency signal in a first frequency band; a power amplifier located on the radio frequency path for performing power amplification processing on the radio frequency signal; and a control module for controlling the input power of the power amplifier so that the input power of the power amplifier is less than the maximum allowable input power of the power amplifier. In an embodiment of the present application, the input power of the power amplifier is controlled to be lower than the maximum allowable input power of the power amplifier, so as to protect the PA from burning out and improve the reliability of the PA to a certain extent.

The invention discloses a power supply circuit and a variable-frequency electric appliance. The power supply circuit is applied to a frequency conversion electric appliance with a compressor, and comprises a discharge module of which the input end is connected with a power supply; the positive terminal of the input end of the first power supply branch is connected with the positive terminal of the output end of the discharge module, the negative terminal of the input end of the first power supply branch is connected with the negative terminal of the output end of the discharge module, and the output end of the first power supply branch is connected with the compressor; the electric reactor is arranged between the positive terminal of the input end of the first power supply branch and the positive terminal of the output end of the discharge module; and the positive terminal of the input end of the second power supply branch is connected with the positive terminal of the output end of the discharge module, the negative terminal of the input end of the second power supply branch is connected with the negative terminal of the output end of the discharge module, and the output end of the second power supply branch is connected with a main control load of the variable-frequency electric appliance. According to the invention, the occupied space of the device can be reduced, and the device cost is reduced.

The utility model discloses a low-power-consumption linear high-frequency oscillator and an electric toothbrush, the linear high-frequency oscillator comprises a casing, the casing penetrates along the axial direction to form a mounting cavity, an opening at one end of the casing along the axial direction is covered with a baffle, and an opening at the other end of the casing is covered with an end cover; a mover module is connected in the mounting cavity in a sliding mode in the axial direction, a first through groove is formed in the mover module in the width direction of the machine shell in a penetrating mode, and magnetic steel is arranged in the first through groove; two sets of plate spring assemblies are arranged in the mounting cavity and connected to the two ends of the rotor module in the axial direction respectively. Two coil winding modules are arranged in the mounting cavity and oppositely arranged on the two sides of the mover module in the width direction of the machine shell, and when alternating current is connected, the magnetic poles of the ends, facing each other, of the two coil winding modules are opposite, and the coil winding modules are used for driving the mover module to do linear reciprocating motion in the axial direction. According to the utility model, the use feeling and the experience feeling of customers can be improved while the power utilization endurance is improved.

This utility model discloses a current-output type fuel level sensor, comprising: a level sensing unit including a capacitor, the capacitor comprising an outer tube and an inner tube coaxially arranged, with a gap between the outer tube and the inner tube; and a signal processing circuit unit including a C-V conversion circuit and a V-I conversion circuit. The C-V conversion circuit converts the capacitance value between the capacitor and a reference capacitor into a voltage signal, and the V-I conversion circuit converts the voltage signal output by the C-V conversion circuit into a current signal. This utility model's level sensor senses the fuel level by using a cylindrical capacitor formed by two layers of metal tubes, and then converts the capacitor capacitance value into a two-wire current signal output through an internal conversion circuit. Using direct current as the signal transmission method, it is not affected by the impedance and parasitic capacitance of the measuring cable, and features low operating current, low power consumption, light weight, simple structure, and no moving parts.

The invention relates to the field of motor locks, and provides a motor lock which comprises a clamping hook assembly, a motor assembly and a rack assembly, the clamping hook assembly is rotatably arranged in the motor lock, and the rack assembly can be connected with the clamping hook assembly in a clamped mode; during unlocking, the motor assembly is powered on to drive the rack assembly to move in the direction close to the lock pin, locking of the rack assembly on the clamping hook assembly is relieved, the clamping hook assembly rotates in the unlocking direction, the clamping hook assembly and the lock pin are separated from each other, and unlocking is achieved. In the locking process, the motor assembly is powered on to drive the rack assembly to move in the direction away from the lock pin and drive the clamping hook assembly to rotate in the locking direction, so that the rack assembly is connected with the clamping hook assembly in a clamped mode, and the clamping hook assembly is locked to the state that the clamping hook assembly cannot rotate through the rack assembly; and meanwhile, the clamping hook assembly is clamped with the lock pin to realize locking. According to the motor lock, the clamping hook assembly, the motor assembly and the rack assembly are matched with one another, the unlocking thrust is enhanced, the working current is small, and the stability of the locking and unlocking process is improved.

The invention provides a low-power-consumption monitoring detection method and circuit, and the method comprises the steps: detecting the physical collision of a vehicle during parking through a plurality of piezoelectric sensors disposed at different parts of the vehicle, and generating an analog voltage signal; first-stage judgment is started, the analog voltage signals are detected and processed, and whether an effective vehicle collision event occurs or not is judged in combination with a signal threshold value; when a valid vehicle collision event occurs, a second level determination based on the vehicle look-around image data is performed. As the piezoelectric sensor can generate the analog voltage signal only after being collided, and only when the analog voltage signal is judged to indicate that an effective vehicle collision event occurs, the second-stage judgment based on the vehicle all-round view image data can be executed, and compared with an ultrasonic radar or a vibration sensor, the second-stage judgment is more accurate. The power consumption of the monitoring system can be effectively reduced, unnecessary video recording and storage are reduced, and the standby time of the system is prolonged.

The invention discloses a water-dissolved hydrogen sensor and a preparation method thereof. The water-dissolved hydrogen sensor comprises a PI flexible substrate and two hydrogen-sensitive chips. The hydrogen-sensitive chips comprise a substrate, a plurality of hydrogen-sensitive resistor elements with the same electrochemical characteristics arranged on the substrate, and metal electrode bumps. The hydrogen-sensitive resistor elements of the two hydrogen-sensitive chips form a Wheatstone bridge structure. The PI flexible substrate is partially perforated, and the two hydrogen-sensitive chips are respectively flip-connected at the perforated and non-perforated portions of the PI flexible substrate, and the metal electrode bumps are connected to the PI flexible substrate. Sealant is sprayed on the backs and surroundings of the two hydrogen-sensitive chips, and a nano-alumina particle layer and a graphene layer are sprayed on the front and surroundings of the hydrogen-sensitive chip at the perforated portion of the PI flexible substrate in sequence, and the hydrogen-sensitive chip at the non-perforated portion of the PI flexible substrate is located in a closed chamber between the PI flexible substrate and the sealant. The water-dissolved hydrogen sensor of the invention has a simple structure, excellent hydrophobicity, good insulation, and can work stably in water for a long time.

The present disclosure provides a connecting sheet structure and a battery module. The connecting sheet structure comprises a connecting sheet body, the connecting sheet body comprises a connecting part and a welding part, the connecting part is connected with the welding part; the welding part is provided with a spot welding bump, the spot welding bump is used for spot welding connection with an electrode of a battery cell; the thickness of the connecting sheet body is greater than 0.3 mm, and the thickness of the spot welding bump is less than or equal to 0.3 mm. The connecting sheet structure makes the use safety of the battery module better.

The invention relates to the field of motors, and discloses a multifunctional sound wave sweeping vibration motor which comprises a telescopic sweeping vibration power-on driving assembly and a telescopic sweeping vibration output assembly. The telescopic sweep vibration power-on driving assembly comprises a telescopic driving coil top cover, a top shell, a bidirectional motion bearing assembly, a telescopic driving coil, a telescopic liquid outlet sweep vibration output assembly supporting base, a sweep vibration magnetic force generation driving coil support A, a sweep vibration magnetic force generation driving coil support B and a sweep vibration magnetic force generation driving magnetic conduction I-shaped iron core. And the sweep vibration magnetic force generates a driving coil, a bottom protecting cover and a protecting shell. The invention has the advantages and effects of large torque, large swing amplitude, low current, low noise, long service life, adjustable and stable frequency, low cost and simple structure; the device has a sound wave vibration sweeping function, and also has a function of vertically and linearly reciprocating at high frequency and conveying liquid through a central through hole.