Abstract: A ceiling lamp is provided by the present disclosure, and the ceiling lamp includes a quick connection structure and a lamp body, the quick connection structure is configured to connect the lamp body to a mounting surface, the quick connection structure is in a circular shape, and an edge of the quick connection structure is formed with a first annular wall extending towards the lamp body, the lamp body is provided with a second annular wall extending towards the quick connection structure, and the second annular wall is provided on an inner side of the first annular wall, the quick connection structure is provided with a first limiting member, an inner wall of the second annular wall is provided with a second limiting member for cooperating with the first limiting member.

Abstract: An optical component includes a first lens and a second lens that are arranged in sequence in an emission direction of a beam and are disposed opposite relative to each other. The first lens has a first shaping surface and a second shaping surface that are disposed opposite to each other, and the second lens has a third shaping surface and a fourth shaping surface that are disposed opposite to each other. The first shaping surface and the third shaping surface form a first shaping surface group to perform optical path collimation on a first polarization direction of the beam. The second shaping surface and the fourth shaping surface form a second shaping surface group to perform optical path collimation on a second polarization direction of the beam.

Abstract: Example radar systems, optical detectors, vehicles, and optical detection methods are provided. An example radar system includes a laser device and an optical detector. The optical detector can include a first polarization scanner and a photosensitive device. The laser device can be configured to emit detection laser. The first polarization scanner can be configured to refract an echo signal of the detection laser, where a refractive index of the first polarization scanner is variable. The photosensitive device can be configured to sense the echo signal refracted by the first polarization scanner.

Abstract: A battery self-heating system includes: a power battery pack, a first heating device, a second heating device and a controller. The power battery pack includes a first battery group and a second battery group connected in series; the first heating device includes a first heating sub-device and a second heating sub-device; the second heating device includes a third heating sub-device and a fourth heating sub-device; and the controller is configured to: control the first heating device and the first battery group to be alternately charged and discharged, control the second heating device and the second battery group to be alternately charged and discharged, and control, when a first one of the first battery group and the second battery group is in a discharged state, a second one of the first battery group and the second battery group to be in a charged state.

Abstract: A battery self-heating control method includes: in a first period of each of control periods, configuring a conduction state of an upper bridge arm assembly and a conduction state of a lower bridge arm assembly to be a self-heating state, and in the self-heating state, alternately charging and discharging a first battery pack and/or a second battery pack to heat the battery pack by a current on a second connecting wire between a motor and the battery pack.

Abstract: Provided is an amorphous silicon thin-film transistor including an amorphous silicon semiconductor layer, a source electrode, and a drain electrode that are successively disposed on a base substrate. Ions doped by an ion implantation process are present in a region, proximal to the source electrode and the drain electrode, of the amorphous silicon semiconductor layer. A concentration of the ions in a surface region, proximal to the source electrode and the drain electrode, of the amorphous silicon semiconductor layer is greater than or equal to 5*10{circumflex over (?)}20 atoms/cc.

Abstract: Provided is a light source correction method for low-light detection, which relates to the technical field of remote detection. The light source correction method includes following steps: S1: determining whether brightness of a light source exceeds a predetermined value, and if the brightness of the light source exceeds the predetermined value, performing step S2; or if the brightness of the light source does not exceed the predetermined value, performing no operation; S2: driving a shielding plate located in front of a luminous flux detection board to rotate around a rotating shaft to obtain a luminous flux intensity on the luminous flux detection board; and S3: drawing a curve graph showing that the luminous flux intensity varies with a rotation position of the shielding plate, and calculating position information of the light source.

Abstract: Provided is a method for detecting a low-latitude air vehicle. The method includes following steps: S1: setting up a fixed column and a movable column, and disposing a detection antenna; S2: determining whether two detection antennas on the fixed column simultaneously detect a target; and if the two detection antennas on the fixed column simultaneously detect the target, performing step S3; or if the two detection antennas on the fixed column do not simultaneously detect the target, performing no operation; S3: determining in real time whether at least one of the two detection antennas loses the detected target; and if the at least one of the two detection antennas loses the detected target, performing step S4; otherwise, adopting the two detection antennas for detection; and S4: driving a rotating shaft to make the movable column rotate; and adopting four detection antennas for detection.

Abstract: The present disclosure belongs to the field of vehicles, and relates to a battery energy processing device and method and a vehicle, which can charge batteries during self-heating of the batteries. The battery energy processing device includes: an energy exchange interface; a first circuit, wherein a first end of the first circuit is connected with the energy exchange interface, and a second end of the first circuit is connected with a battery; a second circuit, wherein a first end of the second circuit is connected with the battery; an energy storage device, connected with a second end of the second circuit; and a controller, configured to: in a first preset state, control the second circuit to charge and discharge the battery to heat the battery, and control the first circuit to receive energy from the energy exchange interface and output the energy to the battery to charge the battery.

Abstract: An electric leakage protection system includes: a first Y capacitor and a second Y capacitor connected in series; a power battery, wherein a positive electrode of the power battery is connected to a first end of the first Y capacitor and the second Y capacitor which are connected in series, and a second end of the first Y capacitor and the second Y capacitor which are connected in series is separately connected to a negative electrode of the power battery and a negative electrode of a DC charging port; and a controller configured to: when acquired electric leakage-related parameters meet preset electric leakage protection conditions, control an energy leakage loop to avoid an electric shock.

Abstract: A shoe washing machine, including a housing, a washing tub provided in the housing, a pulsator, and a driving part. The shoe washing machine also includes a brush provided on the top center of the pulsator, and the brush is configured to be in a shape that projects upward from the top of the pulsator. When the pulsator rotates, the pulsator can drive the brush to rotate at the same time, so that bristles of the brush can move relative to shoes to rub and brush the shoes, so that by improving the linear smoothness of the brushing surface of the brush, an effect of brushing without damaging the shoes can be achieved, and the probability of the shoes getting stuck by the brush can be reduced.

Abstract: An energy conversion device includes: a first battery pack; a first inductor, a first end of the first inductor connected to a positive electrode of the first battery pack; a first bridge arm, a midpoint of the first bridge arm connected to a second end of the first inductor, and a first end of the first bridge arm connected to a negative electrode of the first battery pack; a second battery pack, a positive electrode of the second battery pack connected to a second end of the first bridge arm, and a negative electrode of the second battery pack connected to the first end of the first bridge arm; and a controller connected to the first bridge arm, and configured: in a first state to cause the first and the second battery packs to be charged and discharged alternately to heat the first and the second battery packs.

Abstract: An energy processing apparatus includes: a first battery, a second battery, a first bridge arm, a first inductor, and a controller. A positive electrode of the second battery is connected with a first end of each phase of the first bridge arm, and a negative electrode of the second battery is connected with a second end of each phase of the first bridge arm and a negative electrode of the first battery. A first end of each phase of the first inductor is connected with a midpoint of the corresponding first bridge arm, and a second end of each phase of the first inductor is connected with a positive electrode of the first battery. The controller is connected with each phase of the first bridge arm, and is configured to: in a first preset state, to control the first and the second batteries to be charged and discharged.

Abstract: A battery self-heating control system includes a battery pack, a winding, a first switch assembly, a second switch assembly, a capacitor, and a controller. The battery pack includes a first battery group and a second battery group connected in series, a connection line led out between the first and the second battery groups, and connected to one end of the winding. The first switch assembly and the second switch assembly are connected in series, the first switch assembly is electrically connected to a positive electrode of the first battery group and a first end of the capacitor, the second switch assembly is electrically connected to a negative electrode of the second battery group and a second end of the capacitor, the first end and the second end of the capacitor connected to a load. The controller is electrically connected to the first switch assembly and the second switch assembly.

Abstract: A battery self-heating circuit, includes a first battery group, a second battery group, a first capacitor, a second capacitor, multiple phases of bridge arms, and multiple phase of windings, which correspond to the multiple phases of bridge arms on a one-to-one basis.

Abstract: A battery heating device includes a power battery with a first and a second battery modules, a target winding and a target bridge arm. A first end of the target winding is connected to a negative electrode of the first battery module and a positive electrode of the second battery module, and a second end of the target winding is connected to the midpoint of the target bridge arm. A first end of the target bridge arm is connected to a positive electrode of the first battery module, and a second end of the target bridge arm is connected to a negative electrode of the second battery module. A controller is connected to the target bridge arm, and is configured to: control, in a parking heating mode, the target bridge arm to cause the first and the second battery modules to charge and discharge alternately, thereby heating the power battery.

Abstract: A battery self-heating system includes: a power battery pack, a first heating device, a second heating device and a controller. The power battery pack includes a first battery group and a second battery group connected in series; the first heating device includes a first heating sub-device and a second heating sub-device; the second heating device includes a third heating sub-device and a fourth heating sub-device; and the controller is configured to: control the first heating device and the first battery group to be alternately charged and discharged, control the second heating device and the second battery group to be alternately charged and discharged, and control, when a first one of the first battery group and the second battery group is in a discharged state, a second one of the first battery group and the second battery group to be in a charged state.

Abstract: Provided are a method of producing hair follicle mesenchymal cells whose number has been expanded and whose hair regeneration abilities have been recovered, and a use thereof. The method of producing expanded hair follicle mesenchymal cells includes a main step of culturing hair follicle mesenchymal cells adhered to a substrate surface from a confluent state without passaging the cells. The main step includes culturing the hair follicle mesenchymal cells to make the cells proliferate further from the confluent state until the proliferated hair follicle mesenchymal cells are stacked to form cell layers including two or more stacked layers in at least part of the substrate surface.

Abstract: A method for inhibiting vehicle vibration during self-heating of a battery, the method is applicable to a vehicle including a power battery pack, a first motor, and a second motor. The method includes: controlling the power battery pack to output a drive current to the first motor to drive the first motor to rotate, where when the first motor rotates, the first motor drives the second motor to rotate; controlling the power battery pack to output a self-heating current to the second motor to self-heat a power battery; obtaining a real-time rotation speed of the first motor; and controlling a fundamental frequency of the self-heating current according to the real-time rotation speed, to stagger the fundamental frequency and the real-time rotation speed.