Abstract: A display device includes pixels including a light-emitting element, and an initialization transistor connected between an anode electrode of the light-emitting element and a first initialization power line to which a voltage of initialization power is supplied, and turned on when an initialization scan signal is supplied, and an initialization scan driver which supplies the initialization scan signal. The initial scan driver supplies an i-th (i is a natural number) initial scan signal to overlap an (i?1)-th initial scan signal, and supplies an (i+1)-th initial scan signal so as not to overlap the i-th initial scan signal, and the initialization scan signal is set to a gate-on voltage.

Abstract: A display device includes a display panel which includes first and second pixels disposed in one pixel row, a first gate line connected to the first pixel, a second gate line connected to the second pixel, a first data line connected to the first pixel, and a second data line connected to the second pixel, a gate driver which provides a first gate signal and a second gate signal to the first gate line and the second gate line, respectively, and a data driver disposed adjacent to a first side of the display panel, where the data driver provides a data signal to the first data line. The first data line and the second data line are connected to each other at a second side of the display panel opposite to the first side of the display panel.

Abstract: Disclosed is a display device including a display panel including a pixel, a scan driver, and a driving controller that controls driving of the scan driver. The scan driver provides the pixel with a first mode scan signal having a first active period and a second active period in a first mode and provides the pixel with a second mode scan signal having a compensation active period in a second mode. The driving controller determines whether an operating frequency of the display device corresponds to one of predetermined compensation frequencies in a variable frequency mode, and operates the scan driver in the first mode or the second mode depending on a determination result of the determining.

Abstract: A display device includes a display panel, a gate driver, and a driving controller. The display panel includes a pixel. The gate driver applies an anode initialization signal to the pixel. The driving controller receives a horizontal synchronization signal, receives input image data at a variable frame frequency, and controls the gate driver. A frame period for the display panel includes a scan period and one or more hold periods, the driving controller generates a count value by counting a number of pulses of the horizontal synchronization signal, and determines a current frame period as the hold period when the count value exceeds a reference value, and a time length of the anode initialization signal in each of the one or more hold periods is longer than a time length of the anode initialization signal in the scan period.

Abstract: A power module includes a power semiconductor device, a first power lead electrically connected to a first power terminal of the power semiconductor device, a second power lead disposed in parallel to the first power lead near the first power lead and electrically connected to a second power terminal of the power semiconductor device, and a conductive plate disposed to be spaced apart from the first power lead or the second power lead by a predetermined distance such that a region overlapping with the first power lead or the second power lead is formed.

Abstract: Disclosed herein is a battery charger for electric vehicle includes a motor configured to generate power for driving the electric vehicle, an inverter configured to provide the power to the motor, an AC power input terminal configured to be input at least one AC power of single phase AC power and polyphaser AC power from a slow charger, a power factor corrector configured to include a plurality of full bridge circuits through which the AC power is input through the AC power input terminal, a link capacitor configured to connect in parallel with the power factor corrector, a switch network configured to include a first switch SW A provided to connect any one of a plurality of AC power input lines and a neutral line constituting the AC power input terminal with the power factor corrector, and a second switch provided to transfer one of a direct current power input from a quick charger and an alternating current power input from a slow charger to a high voltage battery and a controller configured to control the

Abstract: A power module includes a power semiconductor device, a first power lead electrically connected to a first power terminal of the power semiconductor device, a second power lead disposed in parallel to the first power lead near the first power lead and electrically connected to a second power terminal of the power semiconductor device, and a conductive plate disposed to be spaced apart from the first power lead or the second power lead by a predetermined distance such that a region overlapping with the first power lead or the second power lead is formed.

Abstract: The present invention relates to a bidirectional on-board charger (OBC) and a method of controlling the same. The bidirectional on-board charger according to the present invention includes: an input power source which is a power source of a charging control system; a power factor corrector (PFC) which is connected to the input power source; a direct current/direct current (DC/DC), circuit which is connected to the power factor corrector and includes a switching unit and an output terminal; a first switch which is On/Off controlled to connect any one of: a first line for connecting the input power source and the power factor corrector and a second line for connecting the power factor corrector and an output terminal of the DC/DC circuit; and a second switch which is disposed between the switching unit and the output terminal of the DC/DC circuit and On/Off controlled.

Abstract: A system of charging a battery of a vehicle is provided. The system includes a charger having a direct current (DC) capacitor to which a DC voltage converted from an AC charge voltage is applied and a first DC converter that converts a magnitude of a voltage of the DC capacitor. A first battery is connected to the first DC converter and is charged with a DC voltage converted by the first DC converter. A second DC converter is connected to the battery and converts a magnitude of a voltage of the battery. A second battery receives a DC voltage converted by the second DC converter. A controller charges the DC capacitor up to a predetermined initial charge voltage using power stored in the second battery by operating the second DC converter and the first DC converter in a backward direction before the AC charge voltage is provided to the charger.

Abstract: A united converter apparatus and an operating method thereof are disclosed. The united converter apparatus includes a high-voltage charger charging a high-voltage battery, using a commercial power and a low-voltage charger charging a low-voltage battery, using the high-voltage battery. The high-voltage charger includes a voltage level adjustment device boosts a voltage of the commercial power to apply the boosted voltage to the high-voltage battery and drops a high voltage applied from the high-voltage battery to apply the dropped voltage to the low-voltage charger.

Abstract: A power conversion system for vehicles is provided. The system includes a switching circuit having first input/output terminals, second input/output terminals and a plurality of switching elements connected between the first input/output terminals and the second input/output terminals. A first energy storage device is connected to the second input/output terminals and has a preset charging/discharging voltage. A first voltage conversion circuit converts power output from the first input/output terminals to output a voltage less than the voltage of the first energy storage device. A second energy storage device is charged/discharged with the output voltage of the first voltage conversion circuit. A controller controls open/short-circuit states of the switching elements based on whether the first energy storage device is being charged and whether the vehicle is traveling.

Abstract: Disclosed herein is a battery charger for electric vehicle includes a motor configured to generate power for driving the electric vehicle, an inverter configured to provide the power to the motor, an AC power input terminal configured to be input at least one AC power of single phase AC power and polyphaser AC power from a slow charger, a power factor corrector configured to include a plurality of full bridge circuits through which the AC power is input through the AC power input terminal, a link capacitor configured to connect in parallel with the power factor corrector, a switch network configured to include a first switch SW A provided to connect any one of a plurality of AC power input lines and a neutral line constituting the AC power input terminal with the power factor corrector, and a second switch provided to transfer one of a direct current power input from a quick charger and an alternating current power input from a slow charger to a high voltage battery and a controller configured to control the

Abstract: A vehicle charging apparatus includes: an AC/DC converter configured to variably output a DC link voltage; and a DC/DC converter electrically connected to the AC/DC converter and configured to acquire an output voltage by conversion of the DC link voltage outputted by the AC/DC converter and transmit the acquired output voltage to a battery. The AC/DC converter includes: a first switch element configured to adjust a power factor of the AC/DC converter according to an operation of the first switch element, and a second switch element configured to increase the DC link voltage outputted by the AC/DC converter according to the operation of the first switch element.

Abstract: A system of charging a battery of a vehicle is provide. The system includes a charger having a DC capacitor to which a DC voltage converted from an AC charge voltage is applied and a first DC converter that converts the magnitude of a voltage of the DC capacitor. A first battery is connected to the first DC converter and is charged with a DC voltage converted by the first DC converter. A second DC converter is connected to the battery and converts a magnitude of a voltage of the battery. A second battery receives a DC voltage converted by the second DC converter. A controller charges the DC capacitor up to a predetermined initial charge voltage using power stored in the second battery by operating the second DC converter and the first DC converter in a backward direction before the AC charge voltage is provided to the charger.

Abstract: A charging apparatus for an electric vehicle is provided. The apparatus charges a vehicle battery upon receiving power from different power sources. The apparatus includes a motor generating power to drive the electric vehicle and an inverter supplying power to the motor. An AC power input terminal receives at least one of single-phase AC power and multi-phase AC power. A power factor corrector having a single three-leg half bridge circuit receives the AC input power through the AC power input terminal. A link capacitor is charged through a combination of the power factor corrector, the motor, and the inverter. A switch network has at least one switch for selectively connecting the AC power input terminal to the power factor corrector, the link capacitor, the motor, or the inverter. A controller operates the power factor corrector, the switch network, and the inverter based on a condition of received AC input power.

Abstract: The present invention relates to a bidirectional on-board charger and a method of controlling the same. The bidirectional on-board charger according to the present invention includes: an input power source which is a power source of a charging control system; a power factor corrector (PFC) which is connected to the input power source; a DC/DC circuit which is connected to the power factor corrector and includes a switching unit and an output terminal; a first switch which is On/Off controlled to connect any one of a first line for connecting the input power source and the power factor corrector and a second line for connecting the power factor corrector and an output terminal of the DC/DC circuit; and a second switch which is disposed between the switching unit and the output terminal of the DC/DC circuit and On/Off controlled. According to the present invention, there is an advantage in that a bidirectional power transfer is enabled only by adding the two switches to an OBC circuit in the related art.

Abstract: A motor driving and battery charging apparatus is provided. The apparatus includes a motor having a plurality of coils, a rectifier circuit connected to the plurality of coils, and a high voltage battery. An inverter generates a driving current from an output voltage of the high voltage battery and supplies the driving current to the motor while the motor operates. While the high voltage battery is charged, the rectifier circuit rectifies an alternating current (AC) of an external power source, the motor and the inverter compensate for a power factor of the current rectified by the rectifier circuit, and the high voltage battery is charged with an output current of the motor and the inverter.

Abstract: A united converter apparatus and an operating method thereof are disclosed. The united converter apparatus includes a high-voltage charger charging a high-voltage battery, using commercial power and a low-voltage charger charging a low-voltage battery, using the high-voltage battery. The high-voltage charger includes a voltage level adjustment device boosts a voltage of the commercial power to apply the boosted voltage to the high-voltage battery and drops a high voltage applied from the high-voltage battery to apply the dropped voltage to the low-voltage charger.

Abstract: A planar transformer according to the present disclosure can include: at least one pair of cores arranged vertically and symmetrically; and a printed circuit board assembly including primary printed circuit boards having coil patterns forming a primary wiring and secondary printed circuit boards having coil patterns forming a secondary wiring, the secondary printed circuit boards respectively disposed over or under the primary printed circuit boards. The coil patterns of the primary printed circuit boards and the coil patterns of the secondary printed circuit boards can be alternately stacked.

Abstract: A power conversion system for vehicles is provided. The system includes a switching circuit having first input/output terminals, second input/output terminals and a plurality of switching elements connected between the first input/output terminals and the second input/output terminals. A first energy storage device is connected to the second input/output terminals and has a preset charging/discharging voltage. A first voltage conversion circuit converts power output from the first input/output terminals to output a voltage less than the voltage of the first energy storage device. A second energy storage device is charged/discharged with the output voltage of the first voltage conversion circuit. A controller controls open/short-circuit states of the switching elements based on whether the first energy storage device is being charged and whether the vehicle is traveling.