Patent application number | Description | Published |
20140287334 | FUEL CELL SYSTEM AND THE OPERATING METHOD THEREOF - A fuel cell system includes an air manifold through which air is supplied or exhausted, a fuel gas manifold through which fuel gas is supplied or exhausted, a stack portion that generates electricity by using air and fuel that are supplied by the air manifold and the fuel gas manifold, and an injection array that is disposed along an inside of the air manifold or the fuel gas manifold to inject air or fuel gas. | 09-25-2014 |
20140377673 | FUEL CELL - A fuel cell including a stack in which a plurality of cells are stacked includes an air manifold and a hydrogen manifold on a first side and a second side of the stack, respectively, a jet array including a tubular body inserted in the air manifold or the hydrogen manifold and a plurality of orifices formed in the tubular body and arranged in a longitudinal direction of the tubular body, a pump or a valve for supplying air or hydrogen to the jet array; and a controller that operates the pump or the valve. | 12-25-2014 |
20150180065 | HYDROGEN PURGE UNIT FOR FUEL CELL SYSTEM - A fuel cell system having a hydrogen purge unit may include a purge pipe that connects an air discharge pipe connecting a fuel cell stack and a humidifying device and a hydrogen discharge pipe that discharges hydrogen from the fuel cell stack, and a purge valve provided at the purge pipe. In particular, a plurality of purge branch apertures are structured to discharge a purge gas from the fuel cell stack into the air discharge pipe by providing the purge branch apertures at intervals along the bottom surface of the purge pipe in a downstream section of the purge pipe that extends from the purge valve in a downstream direction. | 06-25-2015 |
20150214566 | FUEL CELL STACK MANIFOLD WITH EJECTOR FUNCTION - A fuel cell stack manifold having an ejector function of which the manufacturing cost and the weight can be reduced by optimizing hydrogen supply and recirculation channels and removing other members. hardware without a separate ejector structure for additionally attaching an ejector, of which the productivity can be improved by removing from an ejector assembly process. The fuel cell system minimizes joints through which hydrogen may leak, by implementing a new structure of a manifold added with an ejector function by integrally forming/manufacturing a stack manifold having a venturi and diffuser structure and adding a nozzle thereto. | 07-30-2015 |
20150267836 | SOLENOID VALVE FOR FUEL CELL SYSTEM - A solenoid valve for a fuel cell system is provided that includes a valve housing and a valve body disposed within the valve housing having an inflow passage through which hydrogen flows in, a discharge passage through which hydrogen is discharged, and a valve passage connecting the inflow passage and the discharge passage. A solenoid is disposed within the valve housing and a plunger is supported within the solenoid by a valve spring. and the plunger is movable upward and downward while corresponding to the direction of the valve passage. A pressure balance unit is disposed extraneous to the plunger to press the plunger with force corresponding to excessive pressure greater than a determined inflow hydrogen pressure applied through a branch passage that branches off from the inflow passage. | 09-24-2015 |
20160087289 | GAS AND CONDENSED WATER DISCHARGE SYSTEM FOR FUEL CELL SYSTEM AND CONTROL METHOD THEREOF - Disclosed are a system and a method for discharging a gas and condensed water for a fuel cell system. The gas and condensed water discharge system comprises: a fuel cell stack that includes cathodes and anodes and produces an electric current by an electrochemical reaction of oxygen and hydrogen; a water trap that temporarily stores gases and water discharged from anodes of the stack and condensed water; an integrated drain valve that is mounted at the water trap so as to generate the gas flow path for gases and the condensed water passing through a discharge portion of the integrated drain valve and discharged out of the water trap; and a controller that discharges the gases and the condensed water by opening and closing the integrated drain valve. | 03-24-2016 |
20160118675 | FUEL CELL SYSTEM USING HYDROGEN SUPPLY MANIFOLD - A fuel cell system having a hydrogen supply manifold according to an exemplary embodiment of the present invention may include a stack that uses air and fuel gas, which is supplied, to generated electricity, a recirculation line that recirculates a fuel gas, which is partially used by the stack to be exhausted, to an inlet of the stack, and an ejector unit that is disposed on the recirculation line, supplies fresh fuel gas, and circulates the recirculated gas, wherein the ejector unit may include a middle pressure manifold where a nozzle mounting portion is formed at one side and a supply passage is formed to transmit fuel gas to the nozzle mounting portion, a control valve that is disposed on the middle pressure manifold to control fuel that is supplied to the stack, a nozzle that is engaged with an end portion of the nozzle mounting portion to injects fuel gas that is supplied through the supply passage, and a low pressure manifold that is engaged with the middle pressure manifold, a chamber is formed to house the nozzle mounting portion and the nozzle, a venture and a diffuser is formed in a direction that the fuel gas is injected from the nozzle, sucks exhaust gas of the stack and mixes the exhaust gas and the fuel that is injected from the nozzle through the venture and the diffuser. | 04-28-2016 |
20160126569 | MANIFOLD DEVICE OF FUEL CELL STACK - A manifold device of a fuel cell stack is provided which prevents moisture condensed in gases supplied to the fuel cell stack from excessively flowing into specific cells of the stack by heating gases supplied into the stack using heat of the stack. The manifold device also prevents flooding that is caused by liquid generated in cells disposed away from a gas inlet by removing a flow rate difference of gases generated in respective cells based on distances from the gas inlet of the stack. | 05-05-2016 |
Patent application number | Description | Published |
20110156606 | LIGHT EMITTING DIODE DRIVER - There is provided a light emitting diode (LED) driver removing signal interference by varying a switching frequency within a preset range. The LED driver includes a power supply section switching input power and supplying driving power to at least one LED; a switching control section controlling the switching of the power supply section according to a clock signal being supplied; and a clock signal generation section supplying the clock signal having a preset variable frequency range to the switching control section. | 06-30-2011 |
20120161662 | DIGITAL PWM GENERATOR AND APPARATUS FOR DRIVING LIGHT EMITTING DEVICE - There is provided a digital PWM generator according to a first exemplary embodiment of the present invention including: an A/D converter dividing a predetermined reference voltage into a plurality of sections corresponding to a predetermined first set value, searching a section to which the magnitude of an input voltage Vin corresponds, among the plurality of sections, and converting a value corresponding to the searched section into a digital signal; a frequency selector providing a counting number by counting a predetermined high-speed counting clock during a one-cycle section of a predetermined reference clock; and a PWM signal generator converting the digital signal from the A/D converter into a ratio value corresponding to a ratio for the reference voltage and generating a PWM signal having a controlled duty ratio of the reference clock by using the ratio value and the counting number from the frequency selector. | 06-28-2012 |
20130249424 | LIGHT EMITTING DIODE DRIVING APPARATUS - There is provided a light emitting diode driving apparatus capable of uniformly controlling current balance between light emitting diode channels. The light emitting diode driving apparatus includes: an AC to DC converting unit converting input AC power into a preset DC driving power; a detecting unit detecting voltage drops generated in a plurality of respective light emitting diode channels each having a plurality of light emitting diodes performing a light emitting operation by receiving the DC driving power; a converting unit converting analog values detected from the detecting unit into digital values; and a driving unit differentially setting switching signal duty cycles in which a driving current is allowed to flow in the plurality of respective light emitting diode channels according to the digital values from the converting unit to drive the plurality of light emitting diode channels. | 09-26-2013 |
20140139021 | MULTI-OUTPUT POWER SUPPLY - There is provided a multi-output power supply capable of maintaining power balancing between multiple output powers by fixing a switching duty until a voltage level reaches a predetermined voltage level during an initial stage of a soft-start operation, the multi-output power supply including a power supply unit switching an input power and outputting a plurality of powers having levels determined according to the switching, and a controller controlling a soft switching operation of the power supply unit during an initial operation and fixing a switching duty of the power supply unit to a preset switching duty according to a result of a comparison between a preset reference voltage level and an operating voltage determining whether the soft switching operation is performed or not during the soft switching operation. | 05-22-2014 |
20140160806 | MULTI-OUTPUT POWER SUPPLY APPARATUS - There is provided a multi-output power supply apparatus capable of maintaining multiple output voltages in a balanced state by limiting a variable range of a switching duty according to a load state. The multi-output power supply apparatus includes: a power supply unit switching input power to output a plurality of voltages whose power levels are determined according to the switching operation; and a controller detecting power states of at least some of the plurality of voltages from the power supply unit, and limiting a range of a switching duty of the power supply unit to a pre-set range when the detected power states correspond to a pre-set limited power state. | 06-12-2014 |
20140160807 | POWER SUPPLY APPARATUS - There is provided a power supply apparatus capable of precisely control a primary side switching frequency at a secondary side by receiving fed-back information regarding a power state at the secondary side without a separate expensive circuit or a complicated circuit. The power supply apparatus includes: a power supplying unit having a primary side and a secondary side having different ground electrical characteristics, switching power input to the primary side, and transferring the switched power to the second side electrically insulated from the primary side to supply the power; a controlling unit provided on the secondary side and receiving fed-back information regarding a power state of the power supplying unit to control a maximum value and a minimum value of a switching frequency of the primary side; and a transferring unit transferring a control signal from the controlling unit to the primary side of the power supplying unit. | 06-12-2014 |
20140177302 | POWER FACTOR CORRECTION APPARATUS AND POWER SUPPLY APPARATUS - There are provided a power factor correction apparatus and a power supply apparatus, the power supply apparatus including a power supply unit switching input power to supply preset driving power to a load, and a control unit providing a switching control signal having a preset number of pulses for a predetermined time to the power supply unit to control power switching of the power supply unit, and when a voltage level of the driving power is equal to or higher than that of at least one intermediate voltage set between a preset normal operating voltage and a preset abnormal operating voltage, skipping a portion of the number of pulses of the switching control signal for the predetermined time. | 06-26-2014 |
Patent application number | Description | Published |
20110149471 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF FABRICATING THE SAME - There is provided a multilayer ceramic capacitor including: a capacitor main body formed by alternately stacking an internal electrode including an internal electrode-forming material and a dielectric layer; and an external electrode formed on the external surface of the capacitor to be electrically connected to the internal electrode and having an external electrode-forming material, wherein the internal electrode includes a non-diffusion layer including the external electrode-forming material of 2 vol % to 20 vol % and a diffusion layer made of the external electrode-forming material on at least one of the both ends of the non-diffusion layer. | 06-23-2011 |
20110157767 | MULTILAYER CERAMIC CAPACITOR - A multilayer ceramic capacitor is provided. In the multilayer ceramic capacitor, a plurality of first and second inner electrodes are formed inside a ceramic sintered body. Ends of the first and second inner electrodes are alternately exposed to both ends of the ceramic sintered body. First and second outer electrodes are formed on both ends of the ceramic sintered body and connected to the first and second inner electrodes. The first and second outer electrodes include a first region having a porosity in the range of 1% to 10%, and a second region having a porosity less than that of the first region. | 06-30-2011 |
20110157769 | DIELECTRIC CERAMIC COMPOSITION AND MULTILAYER CERAMIC CAPACITOR HAVING THE SAME - There is provided a dielectric ceramic composition including a base powder expressed by a composition formula of Ba | 06-30-2011 |
20120033343 | REDUCTION-RESISTANT DIELECTRIC COMPOSITION AND CERAMIC ELECTRONIC COMPONENT INCLUDING THE SAME - There are provided a reduction-resistant dielectric composition and a ceramic electronic component including the same. The reduction-resistant dielectric composition may include a BaTiO | 02-09-2012 |
20120147523 | METHOD OF MANUFACTURING PEROVSKITE POWDER, PEROVSKITE POWDER MANUFACTURED BY THE SAME AND MULTILAYER CERAMIC ELECTRONIC COMPONENT - There are provided a method of manufacturing perovskite powder, and perovskite powder and a multilayer ceramic electronic component manufactured thereof. The manufacturing method includes: washing metal oxide hydrate to remove impurities therefrom; adding pure water and an acid or a base to the metal oxide hydrate to prepare a metal oxide sol; mixing the metal oxide sol with a metal salt to form perovskite particle nuclei; and conducting grain growth of the perovskite particle nuclei by hydrothermal treatment to produce perovskite powder. The method of manufacturing perovskite powder and the perovskite powder manufactured by the same have advantages such as excellent crystallinity, reduced generation of fine powder, and favorable dispersion properties. | 06-14-2012 |
20120154977 | CONDUCTIVE PASTE COMPOSITION FOR TERMINATION ELECTRODE, MULTILAYER CERAMIC CAPACITOR INCLUDING THE SAME AND METHOD OF MANUFACTURING THEREOF - There are provided a conductive paste composition for a termination electrode, a multilayer ceramic capacitor having the same, and a method thereof. The conductive paste composition for a termination electrode includes a conductive metal powder and a glass frit represented by the following Formula: aSiO | 06-21-2012 |
20120225292 | METHOD OF MANUFACTURING CERAMIC POWDER HAVING PEROVSKITE STRUCTURE AND CERAMIC POWDER HAVING PEROVSKITE STRUCTURE MANUFACTURED USING THE SAME - There are provided a method of manufacturing a ceramic powder having a perovskite structure and a ceramic powder having a perovskite structure manufactured by the same. The method includes: mixing a compound of an element corresponding to site A in an ABO | 09-06-2012 |
20130038983 | CONDUCTIVE PASTE FOR INTERNAL ELECTRODE OF MULTILAYER CERAMIC ELECTRONIC COMPONENT AND MULTILAYER CERAMIC ELECTRONIC COMPONENT USING THE SAME - There is provided a conductive paste for an internal electrode of a multilayer ceramic electronic component and a multilayer ceramic electronic component using the same. One or more nitride powders containing a nitride selected from the group consisting of silicon nitride, boron nitride, aluminum nitride, a vanadium nitride are added to the conductive paste for an internal electrode to increase a shrinkage initiation temperature of the internal electrodes. Accordingly, the reliability of the multilayer ceramic electronic component can be improved by using the conductive paste for an internal electrode. | 02-14-2013 |
20130063865 | CONDUCTIVE PASTE FOR EXTERNAL ELECTRODE, MULTILAYERED CERAMIC ELECTRONIC COMPONENT USING THE SAME AND FABRICATION METHOD THEREOF - There are provided a conductive paste for an external electrode, a multilayered ceramic electronic component using the same, and a fabrication method thereof. The conductive paste for external electrode includes: a conductive metal; and a conductive amorphous metal including a (Cu, Ni)-bZr-c(Al, Sn) that satisfies conditions of a+b+c=100, 20≦a≦60, 20≦b≦60, and 2≦c≦25. A degradation of connectivity between external electrodes and internal electrodes and defective plating due to a glass detachment may be solved. | 03-14-2013 |
20130083449 | DIELECTRIC COMPOSITION AND CERAMIC ELECTRONIC COMPONENT INCLUDING THE SAME - There is provided a dielectric composition including: a base powder including BaTiO | 04-04-2013 |
20130083450 | DIELECTRIC COMPOSITION AND CERAMIC ELECTRONIC COMPONENT INCLUDING THE SAME - There is provided a dielectric composition including: a base powder; a first accessory component including a content (x) of 0.1 to 1.0 at % of an oxide or a carbonate including transition metals, based on 100 moles of the base powder; a second accessory component including a content (y) of 0.01 to 5.0 at % of an oxide or a carbonate including a fixed valence acceptor element, based on 100 moles of the base powder; a third accessory component including an oxide or a carbonate including a donor element; and a fourth accessory component including a sintering aid. | 04-04-2013 |
20130120898 | MULTILAYER CERAMIC ELECTRONIC COMPONENT - There are provided a multilayer ceramic electronic component and a method of manufacturing the same. The multilayer ceramic electronic component includes: a ceramic body including a dielectric layer; first and second internal electrodes disposed within the ceramic body to face each other, while having the dielectric layer interposed therebetween; and first external electrodes electrically connected to first and second internal electrodes and second external electrodes formed on the first external electrodes, wherein the first and second external electrodes include a conductive metal and a glass, and when the second external electrodes are divided into three equal parts in a thickness direction, an area of the glass in central parts thereof with respect to an area of the central parts is 30 to 80%. Therefore, sealing properties of a chip is improved, whereby a multilayer ceramic electronic component having improved reliability may be implemented. | 05-16-2013 |
20130134836 | MULTILAYER CERAMIC ELECTRONIC COMPONENT AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic electronic component, including: a ceramic element having a plurality of dielectric layers laminated therein; and first and second internal electrodes formed within the ceramic element, wherein the first and second internal electrodes include 80 to 99.9 wt % of copper (Cu) and 0.1 to 20 wt % of nickel (Ni), and a frequency therefor is 1000 MHz or less. | 05-30-2013 |
20130135788 | MULTILAYER CERAMIC ELECTRONIC COMPONENT AND FABRICATION METHOD THEREOF - There are provided a multilayer ceramic electronic component comprising: a ceramic main body including a dielectric layer and having first and second main faces, third and fourth side faces opposed in a length direction, and fifth and sixth faces opposed in a width direction; first and second internal electrodes; and one or more first external electrodes formed on the fifth face and one or more second external electrodes formed on the sixth face, wherein the first and second external electrodes have an average thickness ranging from 3 μm to 30 μm, and when at least one of the first and second external electrodes is divided into three equal parts in a thickness direction, an area of glass in central area portions thereof is 35% to 80% of the total areas of the central area portions. | 05-30-2013 |
20130141835 | MULTILAYER CERAMIC ELECTRONIC COMPONENT AND METHOD OF MANUFACTURING THE SAME - There is provided a multilayer ceramic electronic component, including: a ceramic element having a plurality of dielectric layers laminated therein; and first and second internal electrodes formed within the ceramic element, wherein the first and second internal electrodes include 80 to 99.98 wt % of nickel (Ni), 0.01 to 10 wt % of copper (Cu), and 0.01 to 10 wt % of barium titanate (BaTiO | 06-06-2013 |
20130141837 | MULTILAYER CERAMIC ELECTRONIC PART - There is provided a 1005-sized or smaller multilayer ceramic electronic part, including: a ceramic body having internal electrodes having a directivity perpendicular to a printed circuit board; and external electrodes formed on both end portions of the ceramic body and electrically connected to the internal electrodes each including an active area part and a lead part, the active area parts facing each other to contribute to forming capacitance, and the lead part having a width smaller than that of the active area part, and wherein when a width of the active area part is defined as WLa, a width of the lead part on one end portion of the ceramic body connected to the external electrodes is defined as WL1, and a bottleneck rate α of the lead part is defined as 1−WL1/WLa, the bottleneck rate α of the lead part satisfies a range of 0<α≦0.12. | 06-06-2013 |
20130148257 | METHOD OF MANUFACTURING PEROVSKITE POWDER, PEROVSKITE POWDER MANUFACTURED BY THE SAME AND MULTILAYER CERAMIC ELECTRONIC COMPONENT - There are provided a method of manufacturing perovskite powder, and perovskite powder and a multilayer ceramic electronic component manufactured thereof. The manufacturing method includes: washing metal oxide hydrate to remove impurities therefrom; adding pure water and an acid or a base to the metal oxide hydrate to prepare a metal oxide sol; mixing the metal oxide sol with a metal salt to form perovskite particle nuclei; and conducting grain growth of the perovskite particle nuclei by hydrothermal treatment to produce perovskite powder. The method of manufacturing perovskite powder and the perovskite powder manufactured by the same have advantages such as excellent crystallinity, reduced generation of fine powder, and favorable dispersion properties. | 06-13-2013 |
20140002949 | MULTILAYER CERAMIC ELECTRONIC COMPONENT | 01-02-2014 |
20140002950 | MULTILAYER CERAMIC ELECTRONIC COMPONENT AND METHOD OF FABRICATING THE SAME | 01-02-2014 |
20140005029 | METHOD OF MANUFACTURING PEROVSKITE POWDER, PEROVSKITE POWDER MANUFACTURED BY THE SAME AND MULTILAYER CERAMIC ELECTRONIC COMPONENT | 01-02-2014 |
20140022692 | LAMINATED CERAMIC ELECTRONIC COMPONENT AND METHOD OF FABRICATING THE SAME - There are provided a laminated ceramic electronic component and a method of fabricating the same. The laminated ceramic electronic component include a ceramic body including a dielectric layer; and first and second internal electrodes disposed to face each other, having the dielectric layer interposed therebetween within the ceramic body, wherein the ceramic body includes an active layer that is a capacitance forming part and a cover layer that is a non-capacitance forming part formed on at least one of a top surface and a bottom surface of the active layer, and when a thickness of the ceramic body is t and a thickness of the cover layer is T, T≦t×0.05 is satisfied and when an average particle diameter of a dielectric grain in the active layer is Da and an average particle diameter of a dielectric grain in the cover layer is Dc, 0.7≦Dc/Da≦1.5 is satisfied. | 01-23-2014 |
20140022693 | CERAMIC ELECTRONIC COMPONENT AND METHOD OF MANUFACTURING THE SAME - There is provided a ceramic electronic component, including: a ceramic body including a plurality of internal electrodes; a first external electrode layer electrically connected to the internal electrodes and formed on external surfaces of the ceramic body; a second external electrode layer including nickel (Ni), formed on the first external electrode layer; a metal coating layer including tin (Sn), formed on external surfaces of the first external electrode layer and the second external electrode layer; and a diffusion layer formed between the first and second external electrode layers and the metal coating layer. | 01-23-2014 |
20140022698 | LAMINATED CERAMIC ELECTRONIC COMPONENT AND METHOD OF FABRICATING THE SAME - There is provided a laminated ceramic electronic component, including a ceramic body including a dielectric layer; and first and second internal electrodes disposed to face each other, having the dielectric layer interposed therebetween within the ceramic body, wherein when a value of 1% is set to be D1, a value of 50% is set to be D50, and a value of 99% is set to be D99 in a cumulative distribution of dielectric grains by an average particle diameter thereof within the dielectric layer, 2≦D99/D50≦3 and 2≦D50/D1≦3 are satisfied. A high-capacity laminated ceramic electronic component may be implemented with improved adhesion between the dielectric layer and the internal electrode, and improved withstand voltage characteristics and excellent reliability may be implemented. | 01-23-2014 |
20140322537 | METHOD OF MANUFACTURING CERAMIC POWDER HAVING PEROVSKITE STRUCTURE AND CERAMIC POWDER HAVING PEROVSKITE STRUCTURE MANUFACTURED USING THE SAME - There are provided a method of manufacturing a ceramic powder having a perovskite structure and a ceramic powder having a perovskite structure manufactured by the same. The method includes: mixing a compound of an element corresponding to site A in an ABO | 10-30-2014 |
20150179340 | MULTILAYER CERAMIC CAPACITOR AND METHOD OF FABRICATING THE SAME - There is provided a multilayer ceramic capacitor including: a capacitor main body formed by alternately stacking an internal electrode including an internal electrode-forming material and a dielectric layer; and an external electrode formed on the external surface of the capacitor to be electrically connected to the internal electrode and having an external electrode-forming material, wherein the internal electrode includes a non-diffusion layer including the external electrode-forming material of 2 vol % to 20 vol % and a diffusion layer made of the external electrode-forming material on at least one of the both ends of the non-diffusion layer. The multilayer ceramic capacitor capable of preventing cracking due to the diffusion of electrode materials while stably securing capacitance and the method of fabricating the same can be provided. | 06-25-2015 |
Patent application number | Description | Published |
20120314981 | HYDRODYNAMIC BEARING ASSEMBLY AND METHOD OF MANUFACTURING THE SAME - There are provided a hydrodynamic bearing assembly and a method of manufacturing the same. The hydrodynamic bearing assembly includes: an oil sealing part formed between a fixed member and a rotating member; and an oil barrier film disposed so as to prevent leakage of oil from the oil sealing part and including a self-assembled monolayer formed on a surface of at least one of the fixed member and the rotating member. The oil barrier film may be easily formed at room temperature and be continuously used for a long period of time without being damaged due to external impacts. | 12-13-2012 |
20130051714 | HYDRODYNAMIC BEARING ASSEMBLY AND METHOD OF MANUFACTURING THE SAME - There are provided a hydrodynamic bearing assembly and a method of manufacturing the same. The hydrodynamic bearing assembly includes: a lubricating oil filled so as to form a liquid-vapor interface between stationary members and rotating members; and a lipophilic coating formed on the liquid-vapor interface of the lubricating oil so as to prevent lubricating oil leakage. Therefore, the lipophilic coating is formed on the interface of the lubricating oil and an oil repellent material is formed on a surface of at least one of the stationary members and the rotating members, whereby the scattering and the leakage of the lubricating oil may be effectively prevented. | 02-28-2013 |
20130069465 | ADHESIVE RESIN COMPOSITION FOR HDD MOTOR AND HDD MOTOR FABRICATED USING THE SAME - There are provided an adhesive resin composition for a hard disk drive (HDD) motor and a HDD motor fabricated by using the same. The adhesive resin composition for a HDD motor adheres fixed members and rotating members of the HDD motor to each other and includes 100 parts by weight of a first resin, 25 to 80 parts by weight of a second resin, a hardness of which after hardening is lower than that of the first resin, and 40 to 100 parts by weight of a hardener. The HDD motor is fabricated by using the adhesive resin composition for a HDD motor including a flexible epoxy resin, whereby reliability of the motor against external impacts may be improved. | 03-21-2013 |
20130082547 | SEALING RESIN COMPOSITION FOR HDD MOTOR AND HDD MOTOR FABRICATED BY USING THE SAME - There are provided a sealing resin composition for a hard disk drive (HDD) motor and a HDD motor fabricated by using the same. The sealing resin composition includes 40 to 80 parts by weight of epichlorohydrin-4,4-isopropylidene diphenol resin; 5 to 20 parts by weight of acrylated ester; and 5 to 15 parts by weight of acrylated epoxy. The sealing resin composition containing a UV curable epoxy resin is used as a sealing material of the adhering part of the FPC of the HDD motor, whereby generation of outgas in the adhering part may be reduced. | 04-04-2013 |
20130085090 | LUBRICATING OIL COMPOSITION FOR FLUID DYNAMIC BEARING AND HDD MOTOR FABRICATED BY USING THE SAME - There are provided a lubricating oil composition for a fluid dynamic bearing and a hard disk drive (HDD) motor fabricated by using the same. The lubricating oil composition for a fluid dynamic bearing, includes: aliphatic mono carboxylic acid ester having a total of carbon numbers of 26 to 40, as a base oil, obtained by esterification between alcohol represented by the following Chemical Formula 1; and a straight or branched saturated aliphatic mono carboxylic acid having carbon numbers of 2 to 16: | 04-04-2013 |
20130090275 | LUBRICATING OIL COMPOSITION FOR FLUID DYNAMIC BEARINGS AND HDD MOTOR FABRICATED USING THE SAME - There are provided a lubricating oil composition for a fluid dynamic bearing and and a hard disk drive (HDD) motor fabricated by using the same. The lubricating oil composition for a fluid dynamic bearing includes: an aliphatic mono carboxylic acid ester, as a base oil, obtained by esterification between carboxylic acid represented by the following Chemical Formula 1; and isopropyl alcohol: | 04-11-2013 |
20130090276 | LUBRICATING OIL COMPOSITION FOR FLUID DYNAMIC BEARING AND HDD MOTOR FABRICATED USING THE SAME - There are provided a lubricating oil composition for a fluid dynamic bearing and a hard disk drive (HDD) motor fabricated using the same. The lubricating oil composition for a fluid dynamic bearing includes: an aliphatic mono carboxylic acid ester, as a base oil, obtained by esterification between alcohol represented by the following Chemical Formula 1; and 2-ethylbutanoic acid: | 04-11-2013 |
20130330029 | HYDRODYNAMIC BEARING ASSEMBLY AND MANUFACTURING METHOD THEREOF - There are provided a hydrodynamic bearing assembly and a manufacturing method thereof. The hydrodynamic bearing assembly includes: an oil sealing part formed between a fixed member and a rotating member; and a silicon containing diamond-like-carbon (Si-DLC) or tungsten carbide (W-Carbide) coating layer formed on at least one surface of the fixed member and the rotating member. The silicon containing diamond-like-carbon (Si-DLC) or tungsten carbide (W-Carbide) coating layer is formed on the at least one surface of the fixed member and the rotating member, whereby abrasion of the fixed member and the rotating member due to friction therebetween may be prevented. | 12-12-2013 |
Patent application number | Description | Published |
20140081497 | SYSTEM AND METHOD FOR CONTROLLING FUEL CELL SYSTEM - Disclosed is a system and method for controlling a fuel cell system. More specifically, a fuel cell demand current is calculated based on a driver demand current calculated from a driver demand torque. Then a target flow rate-1 of air to be supplied to a fuel cell stack is calculated based on the fuel cell demand current and a target stoichiometric ratio (SR) of air. The target flow rate-1 is then compensated for using the target SR, an RPM command value of an air blower is calculated based on a compensated target flow rate-2 and the amount of air currently measured. The operation of the air blower is subsequently controlled based on the calculated RPM command value. | 03-20-2014 |
20140170515 | APPARATUS AND METHOD FOR CONTROLLING COOLANT TEMPERATURE OF FUEL CELL SYSTEM - Disclosed is an apparatus and method that controls a coolant temperature of a fuel cell system, which can improve fuel efficiency by performing a multi-point temperature control based on the power of a vehicle, the outdoor temperature for each season, etc. | 06-19-2014 |
20140336855 | METHOD OF CONTROLLING OPERATION MODE OF FUEL CELL IN FUEL CELL VEHICLE - Disclosed is a method of controlling an operation mode of a fuel cell in a fuel cell vehicle wherein, (a) when a driver-demanded torque is lower than a first torque, and a current state of charge (SOC) in a battery is higher than a first SOC, the operation mode of the fuel cell is converted to a stop mode, and (b) when the driver-demanded torque is higher than a second torque, or the current SOC in the battery is lower than a second SOC, the operation mode is converted to a start mode, wherein the second torque is higher than the first torque and the second SOC is lower than the first SOC. | 11-13-2014 |
20140368028 | SYSTEM AND METHOD FOR EMERGENCY STARTING OF FUEL CELL VEHICLE - A system and method for emergency starting of a fuel cell vehicle is provided. In particular, a high-voltage converter, a balance of power (BOP), and a controller are included in the system. The high-voltage converter is configured such that one side thereof is connected to a high-voltage battery via a battery switch and the other side thereof is connected in parallel to a plurality of fuel cells. The BOP is connected in parallel to the high-voltage converter and the fuel cells. The controller is configured to control the power supplied from the high-voltage battery to the BOP without conversion by connecting the battery switch upon the failure of the high-voltage converter or high-voltage battery. | 12-18-2014 |
20150155574 | DRIVING CONTROL METHOD AND SYSTEM OF FUEL CELL SYSTEM - A driving control method and system of a fuel cell system are provided. The method includes determining, by a controller, a dry state of a fuel cell stack and stopping an air blower, which supplies air to the fuel cell stack, using different processes based on whether the fuel cell stack is in the dry state. Accordingly, the time for which an open circuit voltage (OCV) is maintained is reduced and durability of the fuel cell is improved by preventing dry-out of the fuel cell stack. | 06-04-2015 |
20150180069 | APPARATUS AND METHOD FOR CONTROLLING HYDROGEN PURGING - An apparatus and method for controlling hydrogen purging are provided. The apparatus includes a purging valve that is provided for an outlet disposed adjacent to an anode of a fuel cell stack and is configured to adjust an outflow of water from the fuel cell stack. In addition, a controller is configured to adjust an opening of the purging valve according to a charge capacity obtained by integrating a current capacity of the fuel cell stack. The controller is configured to calculate the charge capacity by multiplying the current capacity of the fuel cell stack by a scale factor when a load for an output current of the fuel cell stack is less than a first reference load which is preset. | 06-25-2015 |
20150188163 | CONDENSED WATER REMOVING METHOD AND APPARATUS OF GAS DIFFIUSION LAYER AND CATALYST LAYER OF FUEL CELL AND APPARATUS - Disclosed are a method and an apparatus for removing condensed water in a gas diffusion layer and a catalyst layer of a fuel cell. The method comprises steps of: a step of determining whether the condensed water is generated in the gas diffusion layer and the catalyst layer of the fuel cell; a step of reducing and supplying an amount of air supplied to a cathode of the fuel cell at a predetermined level, when it is determined that the condensed water is generated in the gas diffusion layer and the catalyst layer in the step of determining; a step of measuring a temperature of a stack of the fuel cell; and a step of increasing the amount of air supplied to the cathode of the fuel cell to an amount of air prior to being reduced at the predetermined operation level, when the measured temperature of the stack of the fuel cell is elevated to a predetermined temperature. | 07-02-2015 |
20150288014 | APPARATUS AND METHOD FOR CONTROLLING COOLANT TEMPERATURE OF FUEL CELL SYSTEM - Disclosed is an apparatus and method that controls a coolant temperature of a fuel cell system, which can improve fuel efficiency by performing a multi-point temperature control based on the power of a vehicle, the outdoor temperature for each season, etc. | 10-08-2015 |
20160006049 | SYSTEM AND METHOD OF CONTROLLING AIR BLOWER FOR FUEL CELL VEHICLE - A system and method of controlling an air blower for a fuel cell vehicle are provided. The method includes determining an operation amount of an air blower to secure a sufficient air flow rate under present operating conditions and obtaining information regarding clogging of an air channel or information regarding a back pressure using the operation amount of the air blower. In addition, a maximum operating range of the air blower is changed based on whether a present state is an air channel-clogged state or a back pressure-increased state. | 01-07-2016 |
20160006059 | DRIVING CONTROL METHOD AND SYSTEM OF FUEL CELL SYSTEM - A driving control system and method of a fuel cell system are provided. The driving control method includes determining, by a controller, when a fuel cell stack is in a water shortage, based on an oversupply of air to the fuel cell stack or a deterioration of the fuel cell stack. A diagnostic level is then assigned to the fuel cell system and at least one recovery driving mode that corresponds to the assigned diagnostic level is performed. | 01-07-2016 |
20160006060 | METHOD OF CONTROLLING OPERATION OF FUEL CELL SYSTEM - A method of controlling the operation of a fuel cell system is provided. The method includes diagnosing a water shortage state in a fuel cell stack based on degradation of cooling performance and deterioration of the fuel cell stack and determining a diagnosis level of the fuel cell system based on the diagnosed water shortage state of the fuel cell stack. In addition, a regenerative operation is performed by selecting a regenerative operation mode which corresponds to the determined diagnosis level. | 01-07-2016 |
20160126565 | SYSTEM AND METHOD FOR CONTROLLING TEMPERATURE OF FUEL CELL STACK - A system and method for controlling a temperature of a fuel cell stack are provided. The method includes performing a pump OFF mode which turns off the cooling water pump or operates the cooling water pump while reducing the rotation speed of the cooling water pump to be less than the reference rotation speed, when a cooling water outlet temperature is equal to or less than a preset first temperature while a pump normal mode which adjusts a rotation speed of a cooling water pump to be equal to or greater than a preset reference rotation speed and varies rpm based on the cooling water outlet temperature is performed. In addition, the pump normal mode is performed when a cooling water outlet temperature estimation value of the fuel cell stack exceeds a preset second temperature while the pump OFF mode is performed. | 05-05-2016 |
20160133959 | CONTROL METHOD AND SYSTEM OF FUEL CELL SYSTEM - A control method and system of a fuel cell system are provided. The control method includes draining the voltage of a fuel cell stack by charging a high voltage battery. In addition, the method includes draining the voltage of the fuel cell stack by connecting a fuel cell load device to the fuel cell stack, which is performed when the voltage of the fuel cell stack decreased by the first draining process is less than a predetermined first reference voltage. | 05-12-2016 |
Patent application number | Description | Published |
20130002385 | TRANSFORMER AND DISPLAY DEVICE USING THE SAME - There is provided a transformer, and more particularly, a transformer capable of minimizing leakage inductance while satisfying a safety standard. The transformer includes: a pipe shaped body part including a plurality of coils wound around an outer peripheral surface thereof while being stacked thereon; and flange parts extended from both ends of the body part in an outer diameter direction thereof, wherein one of the flange parts formed at one end of a winding part includes at least one lead groove therein, the lead groove being formed by being cut to be extended in the outer diameter direction, and the lead groove is divided into at least two outlets by a dividing protrusion disposed in an inner portion thereof. | 01-03-2013 |
20130002390 | TRANSFORMER AND DISPLAY DEVICE USING THE SAME - There are provided a transformer capable of being easily manufactured by facilitating insulation between coils and minimizing leakage inductance, and a display device using the same. The transformer includes: a bobbin including at least one partition wall formed on an outer peripheral surface of a body part having a pipe; a coil group including a plurality of coils wound while being stacked on the body part and at least one insulating wire wound between the plurality of coils; and a core electromagnetically coupled to the coils to thereby form a magnetic path, wherein the plurality of coils are individually wound so as to be uniformly disposed in a plurality of spaces partitioned by the at least one partition wall. | 01-03-2013 |
20140002224 | COIL COMPONENT, MOUNTING STRUCTURE THEREOF, AND ELECTRONIC DEVICE INCLUDING THE SAME | 01-02-2014 |
20140002968 | COIL COMPONENT AND DISPLAY DEVICE INCLUDING THE SAME | 01-02-2014 |
20140153209 | COIL COMPONENT AND DISPLAY DEVICE INCLUDING THE SAME - There are provided a coil component capable of decreasing leakage inductance and a display device including the same. The coil component includes a cylindrical body part having a plurality of coils wound and stacked on an outer peripheral surface thereof; and one or more spacing parts formed on the outer peripheral surface of the body part to uniformly distribute the coils directly wound on the body part. | 06-05-2014 |
20140160644 | COIL COMPONENT AND DISPLAY DEVICE INCLUDING THE SAME - There are provided a coil component capable of easily mounting in a narrow mounting space, and a display device including the same. The coil component including: a bobbin including a cylindrical body part having a plurality of coils wound on an outer peripheral surface thereof, flange parts formed at both ends of the body part, and at least one or more core support parts protruded from outer surfaces of the flange parts; and a core coupled to the bobbin and seated on and fixed to the core support part. | 06-12-2014 |
20150116068 | COIL COMPONENT - There is provided a coil component capable of easily securing insulation between external connection terminals and a core at the time of being manufactured at a small size. To this end, the coil component includes: a bobbin including a winding part having a coil wound therein and a terminal coupling part having at least one external connection terminal coupled thereto, the at least one external connection terminal having a lead wire of the coil connected thereto; and a core coupled to the bobbin and electromagnetically coupled to the coil, wherein the bobbin includes at least one spacing block protruding between the external connection terminal and the core and extending a creepage distance between the external connection terminal and the core. | 04-30-2015 |
20150116069 | COIL COMPONENT AND METHOD OF MANUFACTURING THE SAME - There are provided a coil component having external connecting terminals firmly coupled to a bobbin thereof, and a method of manufacturing the same. The coil component includes: a bobbin having a coil wound therein; and at least one external connecting terminal coupled to the bobbin so that one end thereof protrudes outwardly, wherein the external connecting terminal includes a terminal pin inserted into the bobbin and an extension part enlarges a cross-sectional area of the terminal pin in the bobbin. | 04-30-2015 |
Patent application number | Description | Published |
20100033999 | LOW-POWER RADIO FREQUENCY DIRECT CURRENT RECTIFIER - Provided is a low-power radio frequency (RF) direct current (DC) rectifier. The low-power RF DC rectifier includes a rectification circuit with first and second to n-th rectification units sequentially rectifying an RF signal input through a first input terminal and a second input terminal. The first rectification unit is disposed between the first and second input terminals and a first output terminal of the first rectification unit. The second rectification unit is disposed between the first rectification unit and a second output terminal of the second rectification unit, is biased by the first rectification unit. The n-th rectification unit is disposed between an immediately previous rectification unit and a rectification output terminal of the rectification circuit, is biased by a rectified voltage output from an immediately preceding rectification unit, and outputs the rectified RF signal through the rectification output terminal. | 02-11-2010 |
20140035653 | CAPACITANCE SENSING DEVICE AND TOUCHSCREEN - There are provided a capacitance sensing device and a touchscreen, the capacitance sensing device including a driving circuit unit allowing a capacitor to be charged and discharged; and an integrating circuit unit integrating charges stored in the capacitor, wherein the integrating circuit unit integrates the charges stored in the capacitor to thereby output a first voltage having a positive polarity and a second voltage having a negative polarity. | 02-06-2014 |
20140035862 | CAPACITANCE SENSING APPARATUS AND TOUCH SCREEN APPARATUS - There is provided a capacitance sensing apparatus including a driving circuit unit applying a driving signal to a first capacitor at a predetermined interval; and a sensing circuit unit sensing a change in capacitance generated by the first capacitor based on the driving signal, in which a portion of a plurality of switches included in the sensing circuit unit operate at a first interval, the same as the interval of the driving signal, and remaining switches among the plurality of switches operate at a second interval, different from the first interval. | 02-06-2014 |
20140160057 | TOUCH SENSING METHOD AND TOUCH SENSING APPARATUS - There is provided a touch sensing method including: classifying sensed pieces of data obtained from a panel unit as a plurality of groups according to a predetermined reference; selecting a portion of groups in which variations of the sensed pieces of data included in each of the plurality of groups are lower than a first threshold value; calculating representative values with respect to each of portion of the groups; and determining a noise canceling method by comparing the variations of representative values with a second threshold value. | 06-12-2014 |
20140184556 | TOUCH SENSING APPARATUS AND TOUCH SENSING METHOD - There are provided a touch sensing apparatus and a touch sensing method. The touch sensing apparatus includes: a panel unit including a plurality of driving electrodes and a plurality of sensing electrodes; a driving circuit unit applying driving signals to the plurality of driving electrodes, respectively; a sensing circuit unit measuring a change in capacitance of node capacitors generated in intersections of the plurality of the driving electrodes and the plurality of sensing electrodes; a signal conversion unit generating a first digital signal based on the change in capacitance; and a calculation unit determining a touch according to the first digital signal, wherein the driving circuit unit and the sensing circuit unit are operated by an input voltage, and the signal conversion unit and the calculation unit are operated by a low voltage drop out (LDO) voltage generated by decreasing the input voltage. | 07-03-2014 |
20140184557 | TOUCH SENSING APPARATUS - There is provided a touch sensing apparatus including: a panel unit including a plurality of driving electrodes and a plurality of sensing electrodes; a driving circuit unit applying one of a driving signal and a scanning signal having a frequency different from that of the driving signal, to each of the plurality of driving electrodes; a sensing circuit unit measuring a change in capacitance of a plurality of node capacitors generated in intersections of the plurality of driving electrodes and the plurality of sensing electrodes; and a calculation unit determining a touch based on a change in the capacitance, wherein when the scanning signal is applied to the plurality of driving electrodes, the calculation unit calculates capacitance deviations in the plurality of node capacitors from the deviations of changes in the capacitance generated by the plurality of node capacitors. | 07-03-2014 |
20140375575 | STYLUS PEN AND TOUCHSCREEN MODULE - There are provided a stylus pen and a touchscreen module. The stylus pen includes a receiving unit receiving a predetermined driving signal; a synchronizing unit generating a signal synchronized with the received driving signal; a frequency adjusting unit changing a frequency of the synchronized signal; and a transmitting unit transmitting a signal output from the frequency adjusting unit. | 12-25-2014 |
20150053469 | PRINTED CIRCUIT BOARD AND METHOD OF MANUFACTURING THE SAME - Disclosed herein are a printed circuit board and a method of manufacturing the same. | 02-26-2015 |
20150364992 | CHARGE PUMP SYSTEM AND CHARGE PUMP PROTECTION CIRCUIT - A charge pump system may include a charge pump including a plurality of boosting units boosting an input voltage input to an input terminal multiple times depending on clock signals and outputting the boosted voltage to an output terminal; and a charge pump protection circuit including a series resistor unit disposed between the output terminal and a ground and including a plurality of resistors connected to each other in series. A portion of the plurality of resistors are disposed in parallel to a portion of the plurality of boosting units. | 12-17-2015 |