Abstract: A vehicle includes a boost converter configured to bypass or to convert a stack voltage and output the bypassed or converted stack voltage as a first voltage in response to a first control signal, a first switching unit configured to be switched in response to a first switching signal to form a main path to supply the first voltage to a battery, a buck converter configured to convert and output a level of the first voltage to the battery as a second voltage in response to a second control signal, a second switching unit configured to be switched in response to a second switching signal to form a bypass path to supply the second voltage to the battery, and a controller configured to inspect a level of voltage charged in the battery and generate the first and second control signals and the first and second switching signals based thereon.

Abstract: The DC interrupting device includes a main current conduction unit including a main interrupting switch, which is a mechanical switch, a reverse current power supply unit connected to an input terminal of the main current conduction unit and configured to generate a predetermined reverse current, and a reverse current conduction unit configured to supply the reverse current to an output terminal of the main current conduction unit. The reverse current power supply unit includes a first reverse current dedicated capacitor charged by a voltage applied to an input terminal of the main current conduction unit, a polarity reversing inductor configured to reverse a polarity of the first reverse current dedicated capacitor, and a reverse current power supply unit switch configured to perform circuit connection such that the polarity reversing inductor reverses the polarity of the first reverse current dedicated capacitor.

Abstract: Disclosed is a power factor correction circuit including a plurality of legs connected in parallel and each including two switching devices connected in series, a plurality of inductors each having one terminal connected to an interconnection node of the two switching devices in a corresponding one of the legs, and a controller configured to control on/off states of the switching devices in a pulse width modulation manner such that each of the inductors is built up twice or more in one switching period of the switching devices when an alternating current (AC) voltage is input to the other terminal of each of the inductors.

Abstract: Disclosed are an electric vehicle capable of improving the charging efficiency of a charging apparatus by reducing the switching loss that may occur in the charging apparatus of an electric vehicle and a charging apparatus thereof. To this end, a power factor correction apparatus of an on board charger includes a first boost circuit receiving AC power through a first inductor to charge a load, a second boost circuit receiving the AC power through a second inductor to charge the load, and a third inductor provided between a leg of the first boost circuit and a leg of the second boost circuit so that parasitic capacitors of the first boost circuit and the second boost circuit are discharged.

Abstract: Disclosed is a percutaneous absorption formulation containing melatonin which is a pharmacologically active substance useful for treating insomniac patients and sleep disorder patients.

Abstract: A method for selectively performing a full bridge control and a half bridge control in a WPT system using an LCCL-S resonant network may include: performing the full bridge control by controlling the switches not connected in series of the full bridge inverter to operate simultaneously; calculating a coupling coefficient of the WPT system; determining whether it is possible to switch the full bridge control to the half bridge control based on the calculated coupling coefficient; in response to determining that it is possible to switch the full bridge control to the half bridge control, calculating a load of the WPT system; and performing the half bridge control for the full bridge inverter based on the calculated load.

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 charging apparatus for an electric vehicle is provided. The apparatus includes an AC power input terminal receiving one AC input power from among single-phase AC power and multi-phase AC power. A power factor corrector having full bridge circuits receives the AC input power through the AC power input terminal. A link capacitor is charged through the power factor corrector. A first switch connects any one of an AC power input line and a neutral line of the AC power input terminal to the power factor corrector and a second switch selectively connects the AC power input terminal to the power factor corrector, or the link capacitor. The power factor corrector and the switch network operate based on a condition of received AC input power. The second switch includes a third switch and a fourth switch that connect each full bridge circuit to a positive battery electrode.

Abstract: A wireless power reception apparatus including a bridgeless rectifier in a wireless power transfer (WPT) system for an electric vehicle (EV) may include: a bridgeless rectifier configured to rectify power transferred from a reception coil and to supply a direct current to a battery mounted in the EV; and a controller configured to control operation of the bridgeless rectifier. The bridgeless rectifier may include at least one switch and at least one diode connected to the at least one switch.

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 reception pad for a wireless power transfer (WPT) system includes: a plate-shaped ferrite; an insulating layer disposed on one side of the ferrite; a first coil layer disposed on the insulating layer; an interlayer insulating layer disposed on the first coil layer; and a second coil layer disposed on the interlayer insulating layer. The insulating layer at least partially surrounds the first coil layer and the second coil layer, the first coil layer and the second coil layer at least partially overlap each other and are arranged in a rectangular ring form on the one side of the ferrite, and a ratio of a width which is larger between a first width of the first coil layer and a second width of the second coil layer to a first length of the ferrite in a width direction corresponding to the first width or the second width is 0.14 to 0.15.

Abstract: A method for detecting a foreign object between a transmission pad and a reception pad for wireless power transfer (WPT) may comprise steps of performing a zero phase angle (ZPA) control for a power transfer converter included in or connected to the transmission pad; detecting a characteristic parameter with respect to at least one of an input current and a switching frequency of the power transfer converter; and determining whether or not a foreign object exists between the transmission pad and the reception pad according to whether the characteristic parameter with respect to at least one of the input current and the switching frequency deviates from an allowable range.

Abstract: A charging apparatus for an electric vehicle is disclosed. The charging apparatus includes an AC power input stage receiving at least one AC input power from among single-phase AC power and multi-phase AC power, a power factor corrector having full bridge circuits receiving AC input power, a link capacitor charged through the power factor corrector, a switch network having a first switch connecting any one of an AC power input line and a neutral line of the AC power input stage to the power factor corrector and at least one second switch connecting the AC power input stage to the power factor corrector or the link capacitor, and a controller controlling the power factor corrector and the switch network according to AC input power condition. The second switch includes switches selectively connecting at least one full bridge circuit to a positive(+) electrode of a battery.

Abstract: A method for detecting a foreign object between a transmission pad and a reception pad for wireless power transfer (WPT) may comprise: performing, by a processor, a zero phase angle (ZPA) control for a power transfer converter included in or connected to the transmission pad; detecting, by the processor, a phase difference between an input current and an input voltage of the power transfer converter; and determining, by the processor, whether or not the foreign object exists between the transmission pad and the reception pad by comparing the phase difference with a reference value.

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: Provided herein are a thermoelectric material and a method for preparing the same. The thermoelectric material may include a plurality of grains formed by a chemical bond between a first element and a second element, a graphene-based material; and metal particles. In particular, the graphene-based material and the metal particles may be in interfaces between the grains.

Abstract: A battery charger of a vehicle which has a simple structure and a small size, and more particularly, a battery charger of an electric vehicle charging a battery using power supplied by a variety of power sources is provided. The battery charger of an electric vehicle includes a switch network which includes a first switch configured to connect any one of an AC power input line and a neutral line, which form an AC power input terminal, to a power factor corrector, one or more second switches configured to selectively connect the AC power input terminal to the power factor corrector, a link capacitor, or an inverter, and a third switch configured to electrically connect a motor to a high voltage battery, and a controller configured to control the power factor corrector and the switch network according to conditions of input AC power input through the AC power input terminal.

Abstract: Disclosed are an occupancy distance map (ODM) information reliability determination system and method and a vehicle using the same. The system includes a signal conversion unit configured to receive a plurality of sensing signals and to perform signal processing, a calculation unit configured to calculate state information of a nearby vehicle detected from processed signals, a sensor fusion track output unit configured to output sensor fusion track information based on the calculated state information of the nearby vehicle, an ODM output unit configured to output ODM information based on the calculated state information of the nearby vehicle, an ODM fusion unit configured to generate sensor fusion ODM information by performing sensor fusion with respect to the ODM information, and an ODM information reliability determination unit configured to determine reliability of the sensor fusion ODM information by confirming association between the sensor fusion track information and the sensor fusion ODM information.