Abstract: A wireless charging receiving device, wireless charging method and system, and terminal device are provided. The device includes a control unit, receiving coil, rectifier-filter unit, first voltage conversion unit and battery cell module. The control unit transmits a first control signal to a wireless charging transmitting device and outputs a second control signal to the first voltage conversion unit if the wireless charging transmitting device is of a model belonging to a first preset model set and an output voltage of the battery cell module is within a preset range. The receiving coil senses a first electromagnetic wave to generate a first AC. The rectifier-filter unit converts the first AC into a first DC. The first voltage conversion unit converts the first DC into a second DC under the control of the second control signal. The battery cell module is charged by the second DC.

Abstract: A control circuit includes a detection module configured to detect an operating condition of a semiconductor switching device; a determining module configured to determine a gate allowable voltage of the semiconductor switching device based on the operating condition; and an output module configured to output a control signal to a driving power supply circuit of the semiconductor switching device based on the gate allowable voltage, to control the driving power supply circuit to provide a gate on voltage that is not higher than the gate allowable voltage and that is positively correlated with the gate allowable voltage for the semiconductor switching device. When the operating condition of the semiconductor switching device becomes better, the gate allowable voltage of the semiconductor switching device is increased.

Abstract: A power conversion circuit includes a switching network, a control circuit, a filter circuit, and a direct current side circuit; and the filter circuit includes a first power inductor, a common mode choke, a first differential mode filter capacitor, a first common mode filter capacitor, and a second common mode filter capacitor. The first power inductor includes a first winding and a second winding, and the common mode choke includes a third winding and a fourth winding; a first end of the first winding and a first end of the second winding are separately connected to the switching network, a second end of the first winding and a second end of the second winding are respectively connected to a first end of the third winding and a first end of the fourth winding.

Abstract: Provide is a protective component, including a tubular sidewall being elastic and encloses to form a through hole for receiving the wire box connector; a limiting portion provided on an inner wall surface of the tubular sidewall and configured to clamp a recess on the wire box connector; and a tubular protective portion being elastic and is connected to the tubular sidewall to cover an end portion of the tubular sidewall. The protective component of the present disclosure may prevent the protective component from falling off from a wire box connector after mounting to improve mounting efficiency of the wire box connector and may reduce micro-cracks caused by colliding with a solar cell module.

Abstract: An embedded electrical supply plug has a mounting base and a fastener connected to each other, wherein the mounting base is provided with a power taking contact assembly, a circuit board and a power supply connector that are electrically connected to each other, the mounting base is provided with a first fastening surface, and the fastener is provided with a second fastening surface opposite to the first fastening surface, the fastener and the mounting base are threadedly connected to adjust the distance between the first fastening surface and the second fastening surface. The electrical supply plug is applicable to support arms of different thickness by changing the connection mode, thereby improving the installation flexibility and application range of the electrical supply system.

Abstract: A method for controlling a DC-DC conversion system having power conversion modules, input sensors, an output sensor and a controller, in which each of the power conversion modules has one or more conversion units. The output sensor detects an output signal of the DC-DC conversion system. The input sensors detect input voltage signals located at series-connected first sides of one or more conversion units respectively. The controller receives the output signal and the input voltage signals. The controller generates a first control signal according to the output signal and an output reference signal. The controller generates second control signals according to the input voltage signals and input reference voltage signals. The controller outputs a modulation signal corresponding to a corresponding one of the second control signals according to the first control signal and the corresponding second control signal, to control switches of a corresponding conversion unit.

Abstract: A photovoltaic power generation system includes a plurality of photovoltaic modules, a plurality of optimizers, and an inverter. Each optimizer is connected to at least one photovoltaic module, and output ends of the plurality of optimizers are connected in series to form a string and then connected to the inverter. The optimizer includes a conversion unit, and a control unit configured to control the conversion unit. The optimizer further includes an auxiliary power source, an energy storage unit, and a first unidirectional conduction unit that are connected between the conversion unit and the control unit. The control unit is configured to perform IV curve scanning for each voltage segment, where the voltage segments are obtained by segmenting a range of an output voltage of a photovoltaic module corresponding to the optimizer from an open-circuit voltage to a preset minimum voltage, and at least two voltage segments are obtained through division.

Abstract: A brake pedal sleeve with throttle protection function for facilitating installation, including a main bracket plate, a auxiliary baffle plate, a protection rod, an anti-slip rubber pad, a brake pedal and an adjusting screw; wherein a supporting head, a square hook strip, a main baffle plate and the anti-slip rubber pad are provided on the main bracket plate; the protection rod is provided with a connecting rod, a limiting ring and a limiting screw, one end of the protection rod supporting shaft is provided with a circular head, and the protection rod supporting shaft passes through a washer, a protection rod through hole, a supporting head through hole and an inner hole of the spring ring, and the main bracket plate and the protection rod are combined together; the installation of the present disclosure is more convenient, quick and more stable.

Abstract: A magnetic induction switch has a base; a mounting cavity is arranged in the base; an induction circuit board is arranged in the mounting cavity and a Hall induction element is provided; a rotating cover is rotated on the base and is provided with at least two positioning points on the rotating path; the magnet is provided in the rotating cover, and the position of the magnet relative to the Hall induction element changes during the rotation of the rotating cover so that the induction circuit board generates control signals; the magnetic induction switch of the invention is waterproof, avoids hidden trouble existing in the ignition of the mechanical switch, and has the advantages of simple structure and convenient manufacture.

Abstract: An active pen for a touch display screen, a touch input system, a method for driving an active pen, and a method for driving, a touch input system are provided. The active pen includes: a signal receiving device, a processor which is in signal connection with the signal receiving device, and a signal transmitting device which is in signal connection with the processor. The signal receiving device is configured to receive a first coupling voltage between the active pen and the touch display screen. The processor is configured to process the first coupling voltage to obtain a second coupling voltage, and a polarity of the second coupling voltage is opposite to a polarity of the first coupling voltage. The signal transmitting device is configured to transmit the second coupling voltage to the touch display screen.

Abstract: The present disclosure discloses a method for counting faults of household appliances and belongs to the field of fault processing of household appliances. The method includes: acquiring operating parameter information of a plurality of household appliances, where the plurality of household appliances being equipped with preset parts; acquiring fault information of at least one faulty household appliance in the plurality of household appliances, where the fault information includes fault codes; and determining a fault of the faulty household appliance and a fault rate of the plurality of household appliances corresponding to the fault according to the operating parameter information and the fault codes. In addition, the present disclosure further provides a device for counting faults of household appliances. The method or the device according to the present disclosure can be adopted to count the fault rates of the plurality of household appliances equipped with preset parts.

Abstract: A switch-connected dragonfly network and method of operating. A plurality of groups of row switches is organized according to multiple rows and columns, each row including multiple groups of row switches connected to form a two-level dragonfly network. A plurality of column switches interconnect groups of row switches along respective columns, a column switch associated with a corresponding group of row switches in a row. A switch port with a same logical port on a row switch at a same location in each group along the respective column connects to a same column switch. The switch-connected dragonfly network is expandable by adding additional rows, an added row comprising a two-level dragonfly network. A switch group of said added row associated with a column being connects to an available port at an existing column switch of said column by corresponding added S path link with no re-cabling of the switched network required.

Abstract: A lens includes a light source installation location, a second lens surface and a first lens surface, the light source installation location has a main optical axis passing through the second lens surface and the first lens surface, and on a plane perpendicular to the main optical axis, there are a first dimming axis and a second dimming axis that are perpendicular to each other and intersecting the main optical axis, the first lens surface includes a first light-focusing curved surface locating along the direction of the first dimming axis and on one side of the main optical axis, and at least part of the first lens surface on the other side of the main optical axis is diffusion curved surface; the first lens surface includes a second light-focusing curved surface along the direction of the second dimming axis.

Abstract: The display control method according to some embodiments of the present disclosure includes: acquiring an M-primary-color input signal from each pixel in an original image, the original image including a plurality of pixels corresponding to the plurality of pixel units respectively, each pixel being configured to display a colored image in M primary colors, M being an integer greater than 1 and smaller than N; and calculating an N-primary-color input signal for a corresponding pixel unit of the N-primary-color display panel in accordance with color coordinates of each primary color for the N-primary-color display panel and the M-primary-color input signal.

Abstract: The invention discloses a starch-based multi-channel airflow unit and a preparation method and an application thereof. The preparation method of the present invention comprises the following steps: melting a polylactic acid, wherein a temperature of a first temperature control zone is 135° C. to 145° C., a temperature of a second temperature control zone is 175° C. to 185° C., a temperature of a third temperature control zone is 190° C. to 200° C., and a temperature of a fourth temperature control zone is 175° C. to 185° C.; gelatinizing a starch-based material, adding the starch-based material in the third temperature control zone and fully mixing the mixture; adding a polyol in the third temperature control zone, and fully mixing the mixture; and extruding out the mixed material through twin screws, sizing in vacuum, cooling and sizing, and winding and cutting to obtain the starch-based multi-channel airflow unit.

Abstract: An electrical connection device includes a first connector and a second connector. The first connector includes an insulative body and a plurality of first terminals provided to the insulative body, the insulative body has an insertion groove, a first insertion opening which is communicated with the insertion groove and toward a first direction, a second insertion opening which is communicated with the insertion groove and toward a second direction and a stopping block which is positioned between the first insertion opening and the second insertion opening, the stopping block has a first stopping face which faces the first direction and a second stopping face which faces the second direction.

Abstract: An authorizing party determines an authorization record set that needs to be revoked, where an authorization record included in the authorization record set corresponds to a token that is issued to an authorized party after the authorizing party grants access to the authorized party, and where each authorization record includes an authorization validation moment for a corresponding token. A time validity attribute of the authorization record set is configured. For a specific point-in-time, a value associated with the time validity attribute is set. A determination is performed as to whether the authorization record is revoked based on the authorization validation moment and the value associated with the time validity attribute.