98results about How to "Meet voltage requirements" patented technology

The invention provides a charger outputting different voltages in a self-adaptation mode and an implementation method of the charger. The charger comprises a charging protocol recognition unit and a charging control unit, wherein the charging protocol recognition unit is used for detecting a terminal detecting port, recognizing a charging protocol matched with the mobile terminal and outputting a corresponding feedback signal; the charging control unit is used for feeding back a signal and controlling the output of the voltage regulated in the matched charging protocol to the terminal detecting port. The method includes the steps that the terminal detecting port of the mobile terminal is detected, the charging protocol matched with the mobile terminal is determined, and the current output voltage is changed to the voltage regulated in the charging protocol and then output to the terminal detecting port. According to the embodiment of the charger outputting different voltages in the self-adaptation mode and the implementation method of the charger, the charger can output multiple voltages in the self-adaptation mode, and the requirement of different terminals for voltage can be met; charging voltage can be boosted, large-current charging is guaranteed, EMC is reduced, and the requirement for peripheral components can also be lowered.

The invention discloses an urban rail maglev train traction converter output device. The device comprises an inverter, an input switch cabinet and an output converting device, wherein the input switch cabinet is in circuit connection with an input end of the inverter; the output converting device is in circuit connection with an output end of the inverter; the output end of the output converting device is in circuit connection with a plurality of external motors; the inverter comprises a plurality of inverter modules; and the output converting device comprises an output transformer which is in circuit connection with the output end of the inverter and an output switch device which is in circuit connection with the output end of the output transformer. The urban rail maglev train traction converter output device is provided with a plurality of same inverter modules and reduces the capacity demand of the traction inverter, thereby reducing the weight and the volume of the inverter and being beneficial to the arrangement of equipment; the voltage resistant grade and the output current demand of an inverter power device are reduced, and the cost of a traction system is reduced; the voltage formed by combining two inverters is high, and the speed-up capability of a train high-speed section can be improved; and the redundancy and the reliability of the system are improved.

An independent photovoltaic power generation system comprises a solar cell component, a DC converter and a storage battery. A working method for the tracking maximum power of the independent photovoltaic power generation system is characterized in that the method comprises the following steps: establishing the independent photovoltaic power generation system and determining the composition of the system; determining the input signal and the output signal of the DC converter; determining the relationship between the action for tracking the maximum power of the solar cell component and the action of the DC converter; and determining the work plan for tracking the maximum power of the system. The invention has the following advantages: (1) the structure is structure and has various loads; (2) the adoption of tracking method of maximum power can improve the working efficiency of the solar cell to ensure that the maximum electric energy can be supplied to the load; (3) simultaneously, a DC booster transformer is installed between the solar cell and the load to improve the output voltage of the photovoltaic cell so as to meet the requirements for voltage of the load.

The invention discloses a modular quick-replacement power battery unit of an electromobile. The main body is provided with a plurality of same battery cells, the middle parts of the two opposite sides of each battery cell outwards extend and protrude to form a positive tab and a negative tab, the two ends of each battery cell are fixed on two vertical support plates by the positive tab and the negative tab, the battery cells are connected in series to form a battery module with the support plates, the battery module is arranged in a rectangular battery box, a gap between the battery box and the battery module is filled with a heat conduction material, and a positive electrode and a negative electrode of the battery module are jointly led out from a surface of the battery box and are arranged to be a positive connection plug and a negative connection plug. The power battery unit adopts a modular design, can be configured on different vehicles and is high in universality; during configuration, different configuration modes can be achieved according to actual conditions of a consumer; and through a battery replacement mode, the problems of long charging time and high charging requirement are solved.

The invention relates to an aluminum foil corrosion electrolytic cell, an anode corrosion foil manufacturing method and a device. According to the anode corrosion foil manufacturing method, aluminum foil which has been subjected to high-temperature vacuum annealing is adopted as raw materials; a primary electrolysis-secondary electrolysis-tertiary electrolysis method is adopted; according to the first half V of the primary electrolysis, direct current corrosion is adopted between pole plates, especially, at the second half V of the primary electrolysis, a cooling device is adopted to create a low-temperature environment. The aluminum foil corrosion electrolytic cell comprises an electrolytic cell body and two electrode plates which are located in the electrolytic cell body and are arranged in parallel; the aluminum foil corrosion electrolytic cell further comprises a cooling device; the cooling device is located at the outer sides of the electrode plates and comprises two cooling plates; the two cooling plates and an electrolytic plate are arranged in parallel; and the two cooling plates form an elongated aluminum foil channel. With the aluminum foil corrosion electrolytic cell and the anode corrosion foil manufacturing method adopted, technical problems of low electrostatic capacity or deteriorated bending strength which are caused by the inconformity of lengths of channel holes in aluminum foil radial growth can be solved, and laboratory-to-production transformation can be benefitted. The anode corrosion foil manufacturing method is used for manufacturing medium-and-high voltage anode corrosion foil.

The invention discloses an electric vehicle high-voltage insulation monitoring and protecting system, comprising a high-voltage monitoring circuit, a controller and a power supply module, wherein the high-voltage monitoring circuit includes a waveform generator, a capacitor, a resistor and an insulation resistor positioned between the cathode of a high-voltage battery and a vehicle floor; the controller comprises an AC/DC (Alternating Current/Direct Current) converter, a comparator, a signal processing module and a logic judgment processing module; the power supply module is a power supply with adjustable output voltage; when in use, waveform signals are continuously generated by the waveform generator, the AC/DC converter monitors voltages at two ends of the resistor in real time so as to reflect the change of the resistor, and then a monitoring result is sequentially processed by the comparator, signal processing module and logic judgment processing module to obtain the real-time status of the insulation resistor so as to control insulation. The design not only has a simple monitoring program, an insulation monitoring reminding function and strong adjustable capacity, but also has high accuracy and security and wide application range.

The invention discloses an intelligent amblyopic treatment instrument which comprises a shell and a control circuit system. The upper surface of the shell comprises a man-machine interaction interface and a work interface, and the included angle formed between the work interface and a horizontal bottom surface ranges from 10 degrees to 15 degrees. The control circuit system comprises a control module, a distance sensor and a loudspeaker, the central line of an emitting included angle of the distance sensor is perpendicular to the work interface, the distance sensor is connected with the control module through a data comparison unit, and the control module is connected with the loudspeaker through a voice unit. A control method of the intelligent amblyopic treatment instrument includes the steps: a, initializing electrification; b, selecting functions and transmitting corresponding signals to a buzzer, a liquid crystal driving unit, a motor servo unit and a backlight source driving unit by a single chip microcomputer, or transmitting a starting work instruction to a sight enhancing mirror or a light brush; c, synchronously playing voice prompt and monitoring a sitting posture in visual stimulation therapy; d, giving a stop command after timing or inputting stop signals; e, repeating the steps b, c and d; f, powering off the instrument.

The invention discloses a differential driving circuit for powering a light source and a driving system. The differential driving circuit includes a first set of switches and a second set of switches. A first current from a power source flows through the first set of switches to charge a first energy storage element when the first set of switches are turned on. A second current from the first energy storage element flows through the second set of switches to power the light source when the second set of switches are turned on. The differential driving circuit further includes a second energy storage element coupled to the light source in parallel and for providing a differential voltage to the light source. The invention also discloses a driving system for powering a light source, comprising a first switch, a second switch, a third switch and a fourth switch. A first signal controls conducting states of the first switch and the second switch; a second signal controls conducting statesof a third switch and a fourth switch so as to adjust powering to the light source. The nominal voltage of the differential driving circuit is reduced and switch costs are reduced.

The invention discloses a voltage control method and device, is applied to electronic equipment, and belongs to the technical field of electronics. The electronic equipment comprises a power supply chip and a load chip, wherein an output end of the power supply chip is connected with a first pin of the load chip through a power supply network, the power supply network has first impedance, the first impedance is related to physical parameters of the power supply network in an initial state, and the method comprises the following steps of acquiring first impedance of the power supply network; based on the use duration of the electronic equipment, second impedance of a power supply network being obtained, and the second impedancebeing related to the aging degree of the power supply network; based on the actual working current, the first impedance and the second impedance of the power supply network, a first voltage and a second voltage of the power supply network being obtained, the firstvoltage being related to the first impedance, and the second voltage being related to the second impedance; obtaining a target voltage according to the first voltage, the second voltage and a third voltage required by the load chip; and adjusting the output voltage of the power supply chip to the target voltage.

The invention provides a multifunctional comprehensive amblyopia therapeutic apparatus and a control method thereof. The multifunctional comprehensive amblyopia therapeutic apparatus can perform comprehensive therapy including stereopsis and three-dimensional (3D) training on amblyopia, and is small in size, complete in functions and simple in operation. The multifunctional comprehensive amblyopia therapeutic apparatus comprises a casing, a liquid crystal display, a control circuit system and a pair of 3D chromatic aberration glasses or 3D stereoscopic glasses matched with the liquid crystal display. Electromechanical control of action of the exiting stimulation therapy method is converted into digital image control through the control circuit system and the liquid crystal display, patterns, rack screens, colors and brightness can be adjustable, and the therapeutic purpose can be achieved. By means of the 3D chromatic aberration glasses or 3D stereoscopic glasses matched with the liquid crystal display and synchronous control performed by a control system, images in the left eye and the right eye can be output respectively, three-level visual function training therapy including primary simultaneous vision, secondary fusion vision and tertiary stereoscopic functions can be achieved, and the functions of the existing amblyopia apparatus and a synoptophore can be completely replaced.

The invention provides a handset power adapter. The handset power adapter comprises a protection circuit, a rectification filter circuit, a voltage converting circuit, a first voltage-stabilizing circuit, an output filter circuit, and a charging management circuit, the protection circuit is connected with a power supply, an output terminal of the protection circuit is connected with the rectification filter circuit, an output terminal of the rectification filter circuit is connected with the voltage converting circuit, an output terminal of the voltage converting circuit is connected with the first voltage-stabilizing circuit, an output terminal of the first voltage-stabilizing circuit is connected with the output filter circuit, an output terminal of the output filter circuit is connected with the charging management circuit, the charging management circuit is connected with a storage battery, the output filter circuit and an output terminal of the storage battery are connected with a change-over switch, and an output terminal of the change-over switch is connected with a second voltage stabilizer and a third voltage stabilizer. According to the handset power adapter, the storage battery can be charged via the charging management circuit, and the usage is convenient.

The invention discloses a circuit structure for realizing a wide-gain FB-HB LLC resonant converter and a control method. The whole resonant converter topological structure is divided into three parts:the first part is a switch network module, the second part is a resonant network module, and the third part is a rectifying and filtering network module. Under the condition that a power supply end of the resonant converter is not turned off, the duty ratio of the power switch tube is controlled through a digital control module to realize dynamic conversion; and in order to achieve a wider outputvoltage range, a method for adding a winding to a secondary side is used for obtaining a proper output voltage by controlling a power switch tube at the secondary side of the resonant converter.

The invention provides an island microgrid voltage frequency control method based on model predictive control. The microgrid comprises a photovoltaic power generation unit, an energy storage unit, a power converter unit and a load. A control system comprises a model predictive control system, a storage battery power control system, a photovoltaic cell MPPT tracking system and an inverter controller. The model predictive control method comprises three parts of model prediction, rolling optimization and feedback correction, wherein a filter voltage current state equation and load current prediction under a dq0 coordinate are adopted for model prediction; an optimized objective function considers the microgrid frequency and voltage under the island operation mode; the optimal control variablewhich meets the minimum deviation of the voltage frequency of the grid side in the prediction step size is found out through rolling optimization; and the feedback correction is used for correcting the prediction model by sampling the power grid state of the current moment, so as to prevent the control deviation caused by model mismatching and environmental disturbance.

The invention relates to a device for removing heavy metals and polycyclic aromatic hydrocarbons in bottom sediment of river channels and a method thereof and belongs to the field of river-channel pollution treatment in environmental protection. The device comprises an electrolysis device, a biological fuel cell and a galvanometer, wherein the electrolysis device comprises a cathode area, a bottom-sediment area and an anode area; the negative electrode of the biological fuel cell is arranged at the outer side of a round drum, the positive electrode of the biological fuel cell is arranged at the inner side of the round drum, and a compost layer is arranged between the negative electrode and the positive electrode; a cathode rod is arranged in the cathode area, the top part of the cathode rod is electrically connected with the positive electrode, the negative electrode is connected with one end of the galvanometer, and the other end of the galvanometer is electrically connected with a positive rod; a substance exchange film is arranged between the anode area and the bottom-sediment area, a substance exchange film is also arranged between the bottom-sediment area and the cathode area, the top part of a cathode sampling area is provided with a cathode sampling port, the top part of a middle sampling area is provided with a middle sampling port, and the top part of an anode sampling area is provided with an anode sampling port. The device and the method have the advantages that the energy is saved and simultaneously the purpose of using wastes to treat wastes is achieved.

The invention discloses a traction circuit of an electric locomotive. The traction circuit comprises a traction transformer; first and second batteries; the storage battery charger charges the first storage battery and the second storage battery in a charging mode, and inverts the output current of the second storage battery into constant-voltage constant-frequency load power supply in a storage battery mode; when the first power supply circuit main body is in a contact network power supply mode, the electric energy of the contact network is converted to supply power to the first traction motor and the variable-voltage variable-frequency load; in the storage battery mode, the electric energy of the first storage battery is converted to supply power to the first traction motor and the variable-voltage variable-frequency load; when the second power supply circuit main body is in the contact network power supply mode, the electric energy of the contact network is converted to supply powerto the second traction motor and the constant-voltage constant-frequency load; and in the storage battery mode, the electric energy of the second storage battery is converted to supply power to the second traction motor. By applying the scheme, the cost is reduced, the reliability of the circuit is guaranteed, and the energy conversion utilization rate is increased. The invention further discloses an electric locomotive which has the corresponding effect.

The invention discloses a power supply circuit, an inverter and a photovoltaic power generation device. The power supply circuit comprises a power supply access end, a direct current conversion unit and a main control unit. The power supply input end is used for accessing an input power supply and outputting the power supply to a direct current bus, and the main control unit controls the direct current conversion unit to convert the power supply output by the bus and then output a supplementary power supply, so that the supplementary power supply and the voltage of the input power supply are superposed and then output to the direct current bus; and the requirement of a post-stage circuit on the direct-current bus voltage is met. According to the invention, the output power of the DC conversion unit, the loss of the DC conversion unit and the corresponding heat dissipation cost are reduced, and the efficiency of a system using the power supply circuit is improved; and the bus voltage can operate at low voltage, so that the device stress of the direct-current conversion unit is reduced.

The invention provides a protective circuit of low-voltage equipment continuously working on a locomotive, wherein the protective circuit is applied to the low-voltage equipment continuously working on the locomotive. The protective circuit of the low-voltage equipment continuously working on the locomotive comprises a relay and a signal processing module; a first end of the relay is connected with a positive pole of an accumulator of the locomotive, a second end of the relay is connected with a negative pole of the accumulator of the locomotive, a third end of the relay is connected with a first input end of the low-voltage equipment continuously working on the locomotive and a first input end of the signal processing module, and a fourth end of the relay is connected with a second input end of the low-voltage equipment continuously working on the locomotive and a second input end of the signal processing module; a third input end of the signal processing module is connected with an output end of the low-voltage equipment continuously working on the locomotive; an output end of the signal processing module is connected with a fifth end of the relay. By means of the protective circuit, the feed phenomenon of the accumulator of the locomotive can be avoided, and operation safety of the locomotive is improved.

The application relates to a test transformer, which comprises an iron core, a primary coil and a secondary coil. The primary coil and the secondary coil are arranged around the iron core. The numberof turns of the primary coil and/or the number of turns of the secondary coil are/is adjustable so that the turn ratio between the primary coil and the secondary coil can be changed. When an alternating current is applied to the primary coil of the test transformer, an alternating-current magnetic flux will be generated in the iron core to induce a voltage in the secondary coil. The number of turns of the primary coil and/or the number of turns of the secondary coil are/is adjustable. Specifically, the number of turns of the primary coil can be adjusted, the number of turns of the secondary coil can also be adjusted, and the number of turns of the primary coil and the number of turns of the secondary coil can be adjusted at the same time, so as to change the turn ratio between the primarycoil and the secondary coil and achieve the purpose of voltage regulation. Therefore, the voltage requirements for test of different test objects are met, and the working reliability of the test voltage is improved.

The invention relates to a multi-block hybrid vacuum circuit breaker (1) comprising at least two blocks (2) with at least one semiconductor component and one vacuum interrupter (3) comprising a vacuum switching chamber (4) for accommodating a pair of electrical contacts comprising a fixed electrical contact (5) and a axial movable electrical contact (6), which can be moved in translation for switching purpose, wherein the at least one semiconductor component is connected in parallel to the vacuum interrupter (3).

The invention discloses a control device and a control method of an alternating current and direct current power supply system and the alternating current and direct current power supply system, the alternating current and direct current power supply system comprises a power transmission line, a sending end converter, a receiving end converter and a plurality of switches, and the control device comprises a sending end control unit and a receiving end control unit, the sending end control unit adopts double closed loop control of a dc voltage outer loop and a current inner loop and is used for controlling the direct-current side voltage of the transmitting-end converter to be constant, and meanwhile, neutral-point potential closed-loop control based on zero-sequence voltage injection is introduced to ensure neutral-point potential balance of the transmitting-end converter; and the receiving end control unit adopts double closed-loop PI control of a voltage outer loop and a current inner loop, is used for controlling alternating current voltage output of a receiving end converter, provides voltage support for a load, introduces current feedback and voltage feedforward, and is used for eliminating current coupling and load disturbance voltage influence. By means of the mode, the control device can improve the power supply reliability and effectiveness of the alternating-current and direct-current power supply system, and the voltage requirement of an end user is met.