39results about How to "The voltage value is stable" patented technology

The invention relates to a voltage stability control circuit of a wireless power supply system. The voltage stability control circuit is electrically connected with the output end of a wireless receiving end and comprises a filter circuit, a BUCK voltage reduction circuit and a BOOST voltage boosting circuit, the BUCK voltage reduction circuit and the BOOST voltage boosting circuit are connected in a series mode, and voltage stability control is conducted on the input voltage VIN by controlling the BUCK voltage reduction circuit to work in the through mode and controlling the BOOST voltage boosting circuit to work in the voltage boosting mode; or voltage stability control is conducted on the input voltage VIN by controlling the BUCK voltage reduction circuit to work in the voltage reduction mode and controlling the BOOST voltage boosting circuit to work in the through mode, meanwhile, a power supply circuit self-starting circuit is arranged, at the moment of powering up, the self-starting circuit is started and supplies power to a drive circuit, after the voltage value of an output end CY2 gets stabilized, the output end CY2 supplies power to the drive circuit, it is guaranteed that a stable power source is provided for the drive circuit, and stability of system operation is guaranteed.

The invention discloses a universal meter battery box. The universal meter battery box comprises a box body, battery chambers and a box cover, wherein an upper cavity and a lower cavity are formed in the box body, a DC / DC converter is arranged in the box body, the upper cavity and the lower cavity are used as the battery chambers, a groove is formed in the box cover, and an elastic component is arranged in the groove in pivoting mode through a rigid rod. The universal meter battery box can be embedded in a universal meter, or can be connected with the exterior of the universal meter. Due to the fact that the universal meter battery box is provided with the upper cavity, the lower cavity and the DC / DC converter, various batteries can be selected for supplying electricity, voltage of needed value can be output through conversion of the DC / DC converter, the universal meter battery box is not restricted to one specification of the battery, usage expansion of the universal meter is facilitated, power contact performance of the universal meter battery box is good, the universal meter battery box guarantees that power is supplied to the universal meter in stable voltage, and the use problems that the universal meter performs inaccurate measurement under the circumstance that battery capacity is reduced and the like are solved.

The invention discloses a display screen structure. The display screen structure comprises a display substrate, a negative electrode wire and at least one metal circuit, wherein the display substrateis provided with a display region and a non-display region, the negative electrode wire is arranged on the non-display region, the at least one metal circuit is arranged on the non-display region andis electrically connected in parallel with the negative electrode wire, and an insulation layer is contained between the negative electrode wire and the at least one metal circuit. By such a parallelmode, the resistance in the negative electrode wire is reduced, and the brightness uniformity of a display screen is improved.

The invention provides a high-entropy ceramic material based on a spinel structure and a preparation method and application thereof. The preparation method comprises the steps that raw materials of a high-entropy ceramic compound and a complexing agent are mixed, a precursor is obtained through a sol-gel method under the weak alkaline condition, then nanoscale MnCox (CayCryFeyNiyZny) O4 high-entropy ceramic powder is generated through high-temperature calcination, and x and y meet the condition that x+5y=2. And the prepared half cell is coated with the calcined high-entropy ceramic powder to obtain the novel proton conductor solid oxide fuel cell. The nano-scale novel high-entropy ceramic powder obtained by the method disclosed by the invention is large in specific surface area and good in catalytic activity; the process method is good in repeatability, low in cost and easy to industrialize, the product can be used for assembling a battery reactor and efficiently converting gas fuel into electric energy, good electrochemical stability is achieved, and cogeneration can still be achieved in the efficient energy conversion process.

The invention discloses a vehicle-mounted charging device, which belongs to the technical field of charging and power supply. The vehicle-mounted charging device comprises a filter circuit, a rectifier circuit, a power factor compensation circuit, a DC / DC conversion circuit and a vehicle-mounted energy storage device, wherein the DC / DC conversion circuit comprises a switch circuit, a DC / DC control circuit connected with the control end of the switch circuit and a second feedback circuit connected with the output end of the switch circuit; the output end of the second feedback circuit is connected with the input end of the DC / DC control circuit; the switch circuit comprises a switch K2, an inductor L2 and a capacitor C2; the switch K2 and the inductor L2 are serially connected to serve as the output end of the switch circuit; and one end of the capacitor C2 is connected with the output end and the other end is grounded. Technical problems of large electromagnetic interference and much energy loss as the prior vehicle-mounted charging device commonly uses a transformer are solved, the switch circuit is adopted for outputting charging voltage, energy loss is low, and the charging efficiency is high.

A converter circuit is specified in which, in order to avoid losses to the greatest possible extent, a first inductance is connected in series into the connection of a DC voltage source of the converter circuit to a first switch of the converter circuit, and in which, moreover, a second inductance is connected in series into the connection of a second switch of a switching group of the converter circuit to the junction point between a second capacitive energy store and a second unidirectional non-drivable power semiconductor switch of the switching group. Two further alternative converter circuits and also a method for operating the converter circuit are furthermore specified.

A denitrifying phosphorus removal electricity generation device belongs to the technical field of sewage treatment, and comprises a water tank, an anaerobic tank, a primary sedimentation tank, an aerobic tank, a secondary sedimentation tank, an anoxic tank and an end sedimentation tank which are connected in sequence, wherein the anaerobic tank is used as an anode chamber of a microbial fuel cell, the secondary sedimentation tank is used as a cathode chamber of the microbial fuel cell, the anode chamber and the cathode chamber are externally connected with a resistance box respectively, the anaerobic tank is spaced from the secondary sedimentation tank through an ion exchange membrane, the primary sedimentation tank is connected with the anoxic tank through an overrunning sludge pipeline, the aerobic tank is connected with the secondary sedimentation tank through a return sludge pipeline, the end sedimentation tank is connected with the anaerobic tank through a return sludge pipeline, an water outlet and a sludge discharging opening are formed in the end sedimentation tank, and electric energy is generated while sewage is treated, so as to realize the coupling of two processes of denitrifying phosphorus removal and the microbial fuel cell. According to the device provided by the invention, the process of denitrifying phosphorus removal is utilized for treating domestic sewage to reduce the concentrations of COD, TP and TN in the sewage, a stable voltage value is generated while a water body is purified, the pollutants in the sewage are effectively treated, and further the electric energy is generated.

The invention relates to an energy router, a vehicle control method and a storage medium, a three-phase full-bridge PWM rectification circuit and a pulse wave uncontrolled rectification circuit are connected with a power grid interface and a first voltage side DC bus and are respectively used for outputting PWM signals to control a switch tube, and the transformation ratio of a transformer is adjusted to control the voltage to be maintained at a preset value; a dual active bridge circuit is connected with the first voltage side direct current bus and the second voltage side direct current bus and is used for generating a phase shift control signal to control two-way transmission of power; a three-phase full-bridge inverter circuit is connected with a rail transit network alternating current load interface and a second voltage side direct current bus and is used for generating a PWM signal to control a switching tube; a bidirectional buck / boost converter circuit is connected with the direct current bus and the energy storage interface and is used for generating a control signal to control a switching tube; and a boost circuit is connected with the second voltage side direct current bus and the photovoltaic system interface, is used for providing stable voltage, can distribute power flow, stabilizes the voltage, and ensures safe and reliable operation of the rail transit network.

A current protection circuit for a high voltage system includes: a power supply module to supply power to a load through a high voltage bus and a low voltage bus; a detection module connected to the high voltage bus and used to detect a value of current flowing through the high voltage bus; a signal processing module electrically connected to the detection module and used to amplify the current flowing through the high voltage bus; and a control module electrically connected to the signal processing module, the power supply module, and the load, and used to disconnect the load from the power supply module or perform current limiting for the load when the value of the amplified current exceeds a preset threshold.

The invention discloses a multi-cathode-compartment denitrifying phosphorus removal electrogenesis device by an activated sludge process, and belongs to the technical field of sludge treatment. The electrogenesis device comprises an anaerobic pool, a primary settling tank, an aerobiotic pool, a secondary sedimentation tank, an oxygen deficit pool and a final sedimentation tank, wherein the anaerobic pool is used as an anode compartment of a microbial fuel cell; the aerobiotic pool, the secondary sedimentation tank, the oxygen deficit pool and the final sedimentation tank are used as a cathode compartment of the microbial fuel cell and arranged around four sides of the anaerobic pool; the anode compartment and the cathode compartment are externally connected with resistors, and four pool walls of the anaerobic pool are equipped with proton exchange membranes. The anaerobic pool and the aerobiotic pool, the secondary sedimentation tank, the oxygen deficit pool and the final sedimentation tank are separated by the proton exchange membranes, and the proton exchange membranes can be freely opened and closed by a baffle. The primary settling tank is connected with the oxygen deficit pool through a surpass sludge pipeline, and the aerobiotic pool and the secondary sedimentation tank, the final sedimentation tank and the anaerobic pool are connected through backflow sludge pipelines; a water outlet pipeline and a sludge discharge opening are arranged on the final sediment tank; when the sludge is treated, power energy is generated. The multi-cathode-compartment denitrifying phosphorus removal electrogenesis device can effectively reduce the concentration of COD, TP and TN in sewage, and generate stable voltage value by widely using an electron acceptor.

The invention provides a transformer voltage tracking feedback automatic adjusting device and an adjusting method thereof. The transformer voltage tracking feedback automatic adjusting device comprises a signal collection module, a control module, a display module, a signal storage feedback module, a switching controller and a transformer, wherein the signal acquisition module utilizes a voltage sensor and voltage signal acquisition software to acquire and store a voltage fluctuation curve in a transformer area; the control module is used for carrying out analysis processing based on corresponding signal information and then carrying out dynamic regulation and control on the switching controller; the switching controller is used for dynamically controlling the switching position and frequency of the transformer; the signal storage and feedback module is used for dynamically collecting a current voltage value in real time, storing the current voltage value and feeding back the current voltage value to the control module; the transformer is used for adjusting line voltage; and the display module is used for displaying basic values in a line. The control mode of an existing transformer is effectively improved, and the service life and the energy utilization rate of the device are greatly improved.

Method for feeding electric power into an electric supply grid by means of a wind farm, wherein the wind farm feeds into the supply grid from an interconnecting network and via a transformer, with the first interconnecting network having a interconnecting network voltage and the supply grid having a grid voltage, wherein feeding takes place based on a virtual measured voltage and a voltage of a virtual measurement point is calculated as the virtual measured voltage.

A current protection circuit for a high voltage system includes: a power supply module to supply power to a load through a high voltage bus and a low voltage bus; a detection module connected to the high voltage bus and used to detect a value of current flowing through the high voltage bus; a signal processing module electrically connected to the detection module and used to amplify the current flowing through the high voltage bus; and a control module electrically connected to the signal processing module, the power supply module, and the load, and used to disconnect the load from the power supply module or perform current limiting for the load when the value of the amplified current exceeds a preset threshold.

The invention provides a method for electrodepositing metal lanthanum in an ionic liquid, relates to a method for electrodepositing metal lanthanum, and is used for solving the problem that a single metal lanthanum deposition layer can not be obtained in the ionic liquid 1-butyl-3-methylimidazolium trifluoro-methanesulfonate currently. The method comprises the following steps: adding anhydrous lanthanum chloride in the ionic liquid 1-methyl-3-ethyllimidazolium di(trifluoromethylsulfonyl)imine and evenly mixing, so as to obtain an electroplating liquid; and electroplating by using a constant current mode based on pretreated copper sheet as a cathode and platinum, graphite or titanium-based oxide as an anode, so as to obtain metal lanthanum deposited on the surface of a substrate. According to the invention, a La plated layer prepared by adopting an electrodeposition method is smooth and even, and the plating liquid components are simple and easy to control. In the invention, electrodeposited metal lanthanum can be applied to the field of functional material preparation.

An embodiment of the invention discloses a constant-current driving device and a starting method thereof and belongs to the field of circuit devices for electric light sources. The device comprises a power supply, an LED lamp set, a starting circuit, a first diode and a second diode, wherein the power supply is connected with a cathode end of the first diode, a cathode end of the second diode and an input end of the LED lamp set respectively, an anode end of the second diode is connected with a starting end of the starting circuit, an output end of the LED lamp set is connected with an input end of the starting circuit, and an anode end of the first diode and an output end of the starting circuit are connected with a cathode of the power supply. According to the constant-current driving device, the cost of a low starting voltage device in an existing starting circuit is effectively reduced.

The invention relates to the field of generators, and discloses a friction nanometer generator based on fiber sliding and a preparation method thereof. The structure of the fabric triboelectric flag includes: a main TENG and a sub-TENG, through the method of charge excitation, the charges generated by the sub-TENG are transferred to the main TENG to obtain high power density. The invention selects small-diameter and light-weight fibers as the textile material of the triboelectric flag, which not only effectively increases the contact area of ​​the friction material, but also maximizes the stretching and friction of the triboelectric flag under the action of wind force. The beneficial effect of the present invention is that the generator can still maintain its inherent performance under the action of various bending, torsion and stretching forces. Improve power generation performance. Under the same area and wind conditions, the maximum voltage and current generated are about 160V and 90μA respectively, and the current and voltage values ​​are relatively stable, which makes it have a wide range of applications.

The invention relates to a series connection electricity utilization signal processing circuit and an electronic device. The signal processing circuit comprises a first chip, a second chip and a voltage stabilizing circuit. The first chip and the second chip respectively have a high potential terminal and a low potential terminal, wherein the high potential terminal of the first chip is coupled to a power supply terminal and the low potential terminal of the second chip is coupled to a ground terminal, while the voltage stabilizing circuit is coupled between the low potential terminal of the first chip and the high potential terminal of the second chip to stabilize the voltage values and current values of the first chip and the second chip. The electronic device has the series connection electricity utilization signal processing circuit. The signal processing circuit and the electronic device using the circuit can reduce power consumption, maintain the normal operation of the chips and ensure the processing quality of signals.

A bandgap reference source with high power supply rejection ratio belongs to the technical field of electronic circuits. It includes a power supply self-bias module, a start-up module, a bandgap reference core module and a bias module. The power supply self-bias circuit converts the power supply voltage into the first power rail signal through the seventh NMOS transistor as the power rail of the bias module, and the start-up module Together with the power supply self-bias module, it establishes the bias for the bias module, and the bias module provides bias for the bandgap reference core module; the second switch tube and the third switch tube of the start-up circuit work when the power supply is established to prevent the entire circuit from staying In the zero state, exit after the circuit enters the normal working state; the resistor network in the startup circuit is used to adjust the negative temperature coefficient voltage of the bandgap reference core module, and the adjusted negative temperature coefficient voltage and the positive temperature generated by the bandgap reference core module The coefficient voltages are superimposed to generate a reference voltage. The invention has the characteristics of higher power supply suppression ability, simple structure, high precision and high stability.

The invention relates to the technical field of battery production devices, in particular to a battery cell SOC regulation and control device and a regulation and control method thereof. The battery cell SOC regulation and control device comprises two cross beams which are electrically connected with each other; and connecting ends. One end of the connecting end is electrically connected with the cross beam, and the end, away from the cross beam, of the connecting end is suitable for abutting against a positive pole or a negative pole of a battery cell; and each cross beam is connected with the same number of connecting ends, and the two cross beams are respectively suitable for being connected with positive poles and negative poles of a plurality of battery cells through the connecting ends. According to the battery cell SOC regulation and control device provided by the invention, the two cross beams are connected with the plurality of connecting ends with the same number, one end, far away from the cross beam, of each connecting end abuts against the positive pole or the negative pole of one battery cell, and the two cross beams are electrically connected, so that the plurality of battery cells are connected in parallel, and the voltages of the battery cells in a parallel circuit are the same; namely, the SOC of each battery cell reaches the same, and rapid regulation and control of SOC homogenization of a plurality of battery cells are realized.

The invention discloses a multi-energy-supply hydraulic drive dung removal device and method. The device comprises a factory and is characterized in that solar panels are arranged on the top of the factory, a water tower is installed on the side face of the factory, a water storage pond is installed in front of the water tower, the side face, adjacent to the side face where the water tower is located, of the factory is provided with a water tank, a dung hopper, a pulley block and a rail, the water tower is connected with the water storage tank through a water pipe, and the water tank is connected with the water storage pond through a water pipe. Solar energy and piezoelectric energy are reasonably used and combined with hydraulic driving, the device and method aim to achieve industrial centralized and efficient dung treatment, energy conservation and environment protection, the production efficiency is improved, and economic benefits are increased.

The invention discloses a high-frequency digital power circuit which comprises an EMI filtering rectifier, an optical coupler drive unit, a microcontroller, a voltage regulation circuit and a switching circuit, wherein the EMI filtering rectifier, the voltage regulation circuit, the microcontroller and the optical coupler drive unit are successively connected, one end of the switching circuit is connected with the voltage regulation circuit, and the other end of the switching circuit is connected with the optical coupler drive unit. According to the high-frequency digital power circuit provided by the invention, output signals are stable in the voltage value, and damage on power supply caused by instable voltage signals in the prior art is avoided.

The invention discloses a power saving device for large power equipment. The power saving device comprises a machine case and a power saving device body, wherein the power saving device body is arranged in the machine case and comprises an integrated control unit, a bypass control unit, a harmonic compensation device, a reactive compensation device, a voltage stabilizing device, a surge control device and a bypass switching control key. According to the power saving device, electric equipment can always run in a supply-demand balance state through a PID control closed-loop link; the service lifetime of the electric equipment can also be prolonged under the condition of greatly reducing the energy consumption; and meanwhile, the bypass control unit of the device can effectively ensure that production of the electric equipment is not affected by an equipment failure.

The present invention provides a volt-ampere characteristic test device and method of a solid-state decoupling device. The test device includes a direct-current voltage source, a digital direct-current voltmeter, a digital direct-current milliammeter, a signal processing unit, a test module and a shielding case; the digital direct-current voltmeter monitors voltage at the two ends of the solid-state decoupling device in real time; the digital direct-current milliammeter is connected in series into a loop to monitor current passing through the solid-state decoupling device; the signal processing unit receives test data and sends instructions to the direct-current voltage source through the test module; an upper computer sets a test program and test parameters and receives the data of the signal processing unit and sends instructions to the signal processing unit; the on threshold value of the solid-state decoupling device can be calculated according to the acquired value of the voltage at the two ends of the solid-state decoupling device and the value of the current passing through the solid-state decoupling device, a volt-ampere curve is drawn, and overvoltage protection voltage is determined. The device has the advantages of simple and easy use and convenient wiring, and can provide more accurate and detailed volt-ampere characteristic test data and automatically generate the volt-ampere characteristic curve.

The invention provides an isolated and anti-interference comparison output circuit. The circuit comprises a sensor interface J1, a first grade amplifier, a linear optical coupler integration circuit IC1, a threshold potentiometer POT2, an output triode Q2 and an output interface socket J2. An output terminal of the sensor interface J1 is connected to an input terminal of the first grade amplifier. An output terminal of the first grade amplifier is connected to an input terminal of the linear optical coupler integration circuit IC1. An output terminal of the linear optical coupler integration circuit IC1 is connected to an input terminal of the threshold potentiometer POT2 and a pin 3 of the output interface socket J2. An output terminal of the threshold potentiometer POT2 is connected to a base electrode of the output triode Q2. The circuit has advantages that a clutter signal in a signal source can be well filtered; simultaneously a signal source is amplified; through linear optical coupler isolation, common-mode interference is restrained; and after the signal source passes through a comparison circuit, a stable voltage value is acquired.

The invention discloses a vehicle-mounted charging device, which belongs to the technical field of charging and power supply. The vehicle-mounted charging device comprises a filter circuit, a rectifier circuit, a power factor compensation circuit, a DC / DC conversion circuit and a vehicle-mounted energy storage device, wherein the DC / DC conversion circuit comprises a switch circuit, a DC / DC control circuit connected with the control end of the switch circuit and a second feedback circuit connected with the output end of the switch circuit; the output end of the second feedback circuit is connected with the input end of the DC / DC control circuit; the switch circuit comprises a switch K2, an inductor L2 and a capacitor C2; the switch K2 and the inductor L2 are serially connected to serve as the output end of the switch circuit; and one end of the capacitor C2 is connected with the output end and the other end is grounded. Technical problems of large electromagnetic interference and much energy loss as the prior vehicle-mounted charging device commonly uses a transformer are solved, the switch circuit is adopted for outputting charging voltage, energy loss is low, and the charging efficiency is high.

The invention relates to a high-voltage vacuum switch fault early warning method and system, and the method achieves the detection of a voltage signal and the alarm of an abnormal state after the opening of a high-voltage vacuum switch in a mode of combining a PLC module with an alarm device. Voltage signals output by the high-voltage vacuum switch are subjected to voltage reduction through a transformer, pass through a delay assembly, then are output to a voltage acquisition device and then enter a PLC module, the PLC module judges whether the voltage of each phase exceeds a set voltage threshold value or not, and if the voltage of each phase exceeds the set voltage threshold value, the PLC module outputs the voltage signals to an alarm detection driving device. After the alarm detectiondriving device detects the voltage signals, the alarm detection driving device drives the alarm device to give an alarm, otherwise, no operation is performed.

The invention discloses a nitrogen and phosphorus removal electricity generator, and belongs to the technical field of sewage treatment. A traditional A2 / O technology and a microbial fuel cell are coupled. The nitrogen and phosphorus removal electricity generator comprises a water tank, an anaerobic pond, an oxygen shortage pond, an aerobiotic pond and a settling pond, wherein the water tank, the anaerobic pond, the oxygen shortage pond, the aerobiotic pond and the settling pond are sequentially connected. The anaerobic pond and the aerobiotic pond are separated through a proton exchange membrane, the anaerobic pond serves as an anode chamber of a microbial fuel cell, the aerobiotic pond serves as a cathode chamber of the microbial fuel cell, the anode chamber and the cathode chamber are respectively and externally connected with a resistance box through a carbon felt electrode and a copper wire respectively, and a closed loop is formed; the oxygen shortage pond is connected with the aerobiotic pond through a mixed liquid refluxing pipe, the anaerobic pond is connected with the settling pond through a refluxing sludge pipe, and the settling pond is further provided with a water outlet and a sludge discharging opening. Electric energy is generated while sewage treatment, and the A2 / O technology and the microbial fuel cell technology are coupled. According to the method, domestic sewage is treated through the A2 / O technology, the concentration of COD in sewage, the concentration of TP in the sewage and the concentration of TN in the sewage are reduced, a stable voltage value is generated while water body purifying, pollutants in the sewage are effectively reduced, and electric energy is generated.

A compensating voltage regulator including chassis, A cavity is arranged in the chassis, A top plate and a bottom plate are arranged in the cavity, Between that top plate and the bottom plate, a three-phase cop bar is fixedly installed, A left-right symmetrical fix mounting of that bottom end surface of the bottom plate is provide with a front-rear extending bottom frame, A left-right symmetricaltop frame is fixedly arrange on that upper end surface of the top plate, At both front and rear end of that top frame, the front and rear ends of the top frame are out of the top plate, At both frontand rear end of that chassis, A lead bar is fixedly installed between that top frame and the bottom frame, The three-phase copper bar is symmetrically provided with a sliding plate which extends leftand right and is slidably matched with a guide rod of a corresponding side, and a carbon brush which is opposed to and slidably matched with the three-phase copper bar is fixedly installed on the sliding plate toward the end face of the three-phase copper bar, and the carbon brush is electrically connected with a compensation transformer installed in the cavity through a cable.

The invention relates to a voltage stabilization control circuit of a wireless power supply system, which is electrically connected to an output terminal of a wireless receiving end, and includes a filter circuit, a BUCK step-down circuit and a BOOST step-up circuit, and the BUCK step-down circuit and the BOOST step-up circuit are connected in series , by controlling the BUCK step-down circuit to work in the direct mode and controlling the BOOST step-up circuit to work in the step-up mode, the input voltage VIN is stabilized and controlled; or the BUCK step-down circuit is controlled to work in the step-down mode and the BOOST step-up circuit is controlled It works in the direct mode and controls the voltage regulation of the input voltage VIN. At the same time, it is equipped with a self-starting circuit of the power supply circuit. 2 After the voltage value stabilizes, the output terminal CY 2 Provide power for the drive circuit, ensure a stable power supply for the drive circuit, and ensure the stability of the system operation.