Patent application number | Description | Published |
20120013196 | Fuel cell system and power managing method of the same - A fuel cell system, which provides output power of at least one of a fuel cell and a battery to a load, selects any one operating mode from among various operating modes of the fuel cell system based on a change in performance of the battery due to use of the battery, and controls supplying of output power of the fuel cell and output power of the battery to the load according to the selected operating mode. | 01-19-2012 |
20120064418 | FUEL CELL SYSTEM FOR IMPROVING FUEL SUPPLY - A fuel cell system includes a fuel cell for generating electric power by using a fuel, a valve module that controls a flow of a low concentration fuel circulating through the fuel cell, and a flow of a high concentration fuel supplied from a fuel storage unit to the fuel cell, a pump for pumping at least one of the low concentration fuel and the high concentration fuel according to a fuel flow control of the valve module; and a mixer for mixing and supplying the low concentration fuel and the high concentration fuel pumped from the pump to the fuel cell. | 03-15-2012 |
20120088170 | Fuel cell system and method of operating the same - A fuel cell system for supplying output power of at least one of a fuel cell and a battery to a load selects one of various operation modes of the fuel cell system based on a change of an output state of the fuel cell and controls the supply of the output power of each of the fuel cell and the battery to the load according to the selected operation mode. | 04-12-2012 |
20120178008 | FUEL CELL SYSTEM AND METHOD OF CONTROLLING REACTION CONDITION OF FUEL IN FUEL CELL - A target value of each of factors in a fuel cell system is determined based on a correspondence relationship of a change in each of the factors determining reaction conditions of fuel in a fuel cell to a change in an external environment of the fuel cell system, and peripheral devices of the fuel cell affecting the reaction conditions of the fuel in the fuel cell are controlled according to a target value of each of the factors. | 07-12-2012 |
20130189597 | FUEL CELL SYSTEM AND METHOD OF OPERATING THE SAME AT LOW TEMPERATURE - A fuel cell system includes a fuel cell which generates power using a fuel; peripheral devices for operating the fuel cell and supplying power generated by the fuel cell to loads; and a heating module which heats at least one of the fuel cell and the peripheral devices using heat generated by a semiconductor device attached to the at least one of the fuel cell and the peripheral devices. | 07-25-2013 |
20150061464 | ENERGY HARVESTER USING MASS AND MOBILE DEVICE INCLUDING THE ENERGY HARVESTER - Provided are an energy harvester using a mass, and a mobile device including the energy harvester. The energy harvester includes: a mass; first and second substrates spaced apart from each other, wherein one of the first and second substrates is connected to the mass; first and second electrodes provided on the first and second substrates; and an energy generator provided between the first and second electrodes, wherein the energy generator generates electric energy upon a relative movement between the first substrate and the second substrate caused by a movement of the mass. | 03-05-2015 |
20150288299 | PIEZOELECTRIC ENERGY HARVESTER AND MOBILE DEVICE HAVING THE SAME - A piezoelectric energy harvester includes a cover frame, a mass provided in the cover frame, and at least one piezoelectric transducer provided between an inner wall of the cover frame and the mass and configured to generate electrical energy by being deformed according to a relative movement between the cover frame and the mass. | 10-08-2015 |
20150329984 | THIN FILM DEPOSITION APPARATUS AND THIN FILM DEPOSITION METHOD USING ELECTRIC FIELD - A thin film deposition apparatus and a thin film deposition method using an electric field are provided. The thin film deposition apparatus includes: a first substrate; a plurality of electrodes in a 2D arrangement on the first substrate; and a solution provided on the plurality of electrodes and in which charged nanoparticles are distributed, wherein the charged nanoparticles are selectively deposited on at least a part of the plurality of electrodes by independently applying a voltage to each of the plurality of electrodes. | 11-19-2015 |