Patent application number | Description | Published |
20140355310 | FULL BRIDGE DC-DC CONVERTER THAT APPLIES CURRENT DOUBLER - A full bridge DC-DC converter to which a current doubler is applicable is provided and includes a transformer and a switching circuit that converts a high direct current voltage into a high alternating current voltage and then outputs the high alternating current voltage to the primary side of the transformer. In addition, an output circuit receives and processes the output of the secondary side of the transformer and supplies the processed output to an electric load. The output circuit includes a first inductor, a first contact resistor, a second inductor, a second contact resistor, a first diode, a third contact resister, a second diode, and a fourth contact resister. | 12-04-2014 |
20150042159 | CONVERTER APPARATUS AND METHOD OF ELECTRIC VEHICLE - An integrated converter and method are provided that combine an onboard charger and a low voltage direct current converter. The integrated improves the charging efficiency of the battery of a vehicle and supplies the high density power to an electronic device load. The charging efficiency of the high voltage battery and electricity transmitting efficiency to the low voltage converter is improved using the integrated converter. Furthermore, the low voltage converter receives high density power since the low voltage converter is input with a substantially stable voltage from the integrated converter. | 02-12-2015 |
20150102765 | SWITCHING POWER SUPPLY DEVICE AND BATTERY CHARGER INCLUDING THE SAME - A switching power supply device includes a full-bridge circuit comprising a plurality of switching devices, a transformer comprising a primary coil and a secondary coil, the primary coil being connected to an output of the full-bridge circuit, and a DC/DC converter comprising a rectifier circuit. The rectifier circuit includes a plurality of diodes and is connected to the secondary coil to rectify a voltage outputted from the secondary coil. A snubber circuit includes a first snubber diode connected to an intermediate point of the secondary coil, a second snubber diode connected in series with the first snubber diode, the second snubber diode being connected to one end of an output capacitor, and a snubber capacitor connected between a node between the first and second snubber diodes and a positive side output of the rectifier circuit. | 04-16-2015 |
20150155087 | TRANSFORMER - A transformer is provided that includes a core and a coil part. The coil part includes primary and secondary coils that are wound on the core in different directions. | 06-04-2015 |
20150155088 | HEAT DISSIPATION STRUCTURE OF TRANSFORMER - A heat dissipation structure of transformer includes a bobbin formed with a hollow shape and wound with a primary coil and a secondary coil. A core surrounds an inside and an outside of the bobbin by combining a pair of upper cores with a pair of lower cores. A heat dissipating plate is disposed between the pair of upper cores and the pair of lower cores. According to an exemplary embodiment of the present disclosure, heat generated inside of the core can be effectively exhausted outside by a heat dissipating plate disposed in the center of the core. | 06-04-2015 |
20150162817 | APPARATUS AND METHOD FOR CONTROLLING CHARGE FOR BATTERY - An apparatus for controlling a charge for a battery is provided. The apparatus includes an input unit that is configured to convert alternating current (AC) input power into direct current (DC) power. A first converter is configured to store or output the DC power and a circuit unit is configured to filter or boost output power based on a normal operation state or an instantaneous power failure state of the AC input power. In addition, a second converter is configured to convert the filtered or boosted power and supply the power to a high voltage battery. | 06-11-2015 |
20160001665 | PULSE WIDTH MODULATION RESONANCE CONVERTER AND CHARGER FOR VEHICLE USING THE SAME - A pulse width modulation resonance converter is provided that includes a transformer and a switching unit including first to fourth switches electrically connected to a primary coil of the transformer and configured to convert a DC voltage into an AC voltage by a switching operation of the first to fourth switches in which each switch is switched from an off state to an on state when a voltage difference between both ends is about 0. Additionally, a rectifying unit includes an output capacitor, first to fourth diodes electrically connected to a secondary coil of the transformer, and a resonance tank having a resonance capacitor and a resonance inductor which are electrically connected to the secondary coil of the transformer. The plurality of switches connected to the primary side of the transformer perform the zero-voltage switching using the magnetized inductance of the primary side to minimize the switching loss. | 01-07-2016 |
20160049858 | LC RESONANT CONVERTER USING PHASE SHIFT SWITCHING METHOD - A LC resonant converter using a phase shift switching method includes: a switching unit configured to receive a switching signal according to a phase shift control and to perform zero voltage switching (ZVS) in a leading leg circuit and a lagging leg circuit when a light load is present; a transformer configured to output an output voltage of the switching unit as a predetermined level of voltage; a resonance circuit unit configured to convert frequency characteristics of an alternating voltage transferred from the transformer; and a bridge rectifying circuit unit configured to rectify the alternating voltage whose frequency characteristics are converted into a direct voltage. | 02-18-2016 |
20160064134 | COOLING DEVICE FOR TRANSFORMER - A cooling device for a transformer, capable of reducing heat generation from windings and a core, is provided. The cooling device for the transformer includes a primary winding and a second winding wound around a center part of the core and separated from each other. A heat-dissipating panel for releasing heat generated from the core, the primary winding, and the secondary winding to the exterior using heat conductance is inserted between the primary winding and the secondary winding. In addition, the heat-dissipating panel is configured to release heat using exposed edges of the primary winding and the secondary winding. | 03-03-2016 |