Abstract: An inductor includes a body including a stacked plurality of insulating layers, and a plurality of coil patterns arranged on the insulating layers; and first and second external electrodes disposed on a first surface of the body. The plurality of coil patterns are connected to each other through coil connection portions and form a coil having first and second ends connected to the first and second external electrodes through first and second coil lead-out portions, respectively, and a shortest distance L1 between the coil patterns and a second surface of the body opposing the first surface is shorter than a shortest distance L2 between the coil patterns and the first surface of the body.

Abstract: An inductor includes: a body in which a plurality of insulating layers having a plurality of coil patterns each disposed on each of the plurality of insulating layers are stacked; and first and second external electrodes disposed on an exterior surface of the body, wherein the body further includes a through-hole, and at least one portion of an inner surface of the plurality of coil patterns is exposed through the through-hole.

Abstract: A safety apparatus uses a fuel cell and a high voltage battery as a power source, and includes: a first voltage sensor that measures a voltage of a positive side of a voltage bus; a second voltage sensor that measures a voltage of a negative side of the voltage bus; and a controller that determines an electrical insulation between the positive side of the voltage bus and the electrical chassis based on the voltage of the positive side of the voltage bus and determines an electrical insulation between the negative side of the voltage bus and the electrical chassis based on the voltage of the negative side of the voltage bus.

Abstract: An apparatus and a method for discharging a residual electric energy of a fuel cell can rapidly discharge and remove a residual electric energy of a fuel cell for safety after the fuel cell is operated or when a collision is detected. The apparatus for discharging the residual electric energy of the fuel cell includes: a discharge relay connected with a fuel cell and turned on when starting or stopping a vehicle or a collision detecting sensor detects a collision; and a non-linear protecting element connected with the discharge relay in order to discharge a residual electric energy from the fuel cell.

Abstract: A car navigation system is disclosed. The disclosed car navigation system performs a route search, map storage, and the like by using a mobile device and displays a performance result by transmitting the performance result to a display device equipped in a vehicle.

Abstract: Disclosed herein is a method of detecting defects of a fuel cell membrane-electrode assembly which comprises a gas diffusion layer, a catalyst layer and an electrolyte membrane. The method includes steps of: supplying gas to a first side of the membrane-electrode assembly; deducing a pressure of the supplied gas and a permeation rate of the gas permeating to a second side of the membrane-electrode assembly and then deducing an interface pressure between the electrolyte membrane and the gas diffusion layer of the membrane-electrode assembly using the deduced pressure of the supplied gas and the permeation rate; calculating a gas permeability of the electrolyte membrane using the deduced values of the pressure of the supplied gas and the permeation rate and a predetermined outlet pressure at the second side of the membrane-electrode assembly; and determining a defect state of the electrolyte membrane using a variation in the calculated gas permeability according to a change in the pressure of the supplied gas.

Abstract: Disclosed is a method and system for providing map data of a navigation device. The system comprises: a server for comparing, for each mesh, old version map data and new version map data, generating delta data by extracting only changed spatial data from the meshes, and providing an update of the map data compressed and stored in a navigation device on the basis of the delta data; and the navigation device for receiving a delta file and a delta file header from the server, decompressing the compressed file header included in the old version map data, and extracting only the compressed data block included in an update item in the old version map data by referring to the decompressed file header and the delta file header, the navigation device being built in a car.

Abstract: An apparatus and a method for discharging a residual electric energy of a fuel cell can rapidly discharge and remove a residual electric energy of a fuel cell for safety after the fuel cell is operated or when a collision is detected. The apparatus for discharging the residual electric energy of the fuel cell includes: a discharge relay connected with a fuel cell and turned on when starting or stopping a vehicle or a collision detecting sensor detects a collision; and a non-linear protecting element connected with the discharge relay in order to discharge a residual electric energy from the fuel cell.

Abstract: A safety apparatus uses a fuel cell and a high voltage battery as a power source, and includes: a first voltage sensor that measures a voltage of a positive side of a voltage bus; a second voltage sensor that measures a voltage of a negative side of the voltage bus; and a controller that determines an electrical insulation between the positive side of the voltage bus and the electrical chassis based on the voltage of the positive side of the voltage bus and determines an electrical insulation between the negative side of the voltage bus and the electrical chassis based on the voltage of the negative side of the voltage bus.

Abstract: A laminated inductor may include a body having a plurality of ceramic layers stacked therein, a plurality of conductive patterns formed on the ceramic layers, and via electrodes disposed between the ceramic layers and connecting the conductive patterns disposed in a vertical direction to form a coil. Each of the conductive patterns may include a plurality of unit patterns disposed in parallel to be spaced apart from each other on each of the ceramic layers.

Abstract: There are provided a chip component and a manufacturing method thereof. The chip component includes: a ceramic body including a plurality of ceramic layers, each of which including external electrode patterns provided by filling intagliated recess portions with a conductive material, the intagliated recess portions being disposed to be spaced apart from one another; an internal coil unit positioned within the ceramic body and including internal conductive patterns disposed on the plurality of ceramic layers; and external electrodes, each of which is provided by connecting the external electrode patterns to each other.

Abstract: A chip-type coil component may include: a ceramic body of which a lower surface is provided as a mounting surface and in which a plurality of ceramic layers with a plurality of recesses provided therein are stacked; and an internal coil structure disposed within the ceramic body and including internal coil patterns disposed on the plurality of ceramic layers, wherein the plurality of recesses are exposed to the lower surface of the ceramic body, and the plurality of recesses are filled with a plurality of conductive materials.

Abstract: Disclosed herein is a method of detecting defects of a fuel cell membrane-electrode assembly which comprises a gas diffusion layer, a catalyst layer and an electrolyte membrane. The method includes steps of: supplying gas to a first side of the membrane-electrode assembly; deducing a pressure of the supplied gas and a permeation rate of the gas permeating to a second side of the membrane-electrode assembly and then deducing an interface pressure between the electrolyte membrane and the gas diffusion layer of the membrane-electrode assembly using the deduced pressure of the supplied gas and the permeation rate; calculating a gas permeability of the electrolyte membrane using the deduced values of the pressure of the supplied gas and the permeation rate and a predetermined outlet pressure at the second side of the membrane-electrode assembly; and determining a defect state of the electrolyte membrane using a variation in the calculated gas permeability according to a change in the pressure of the supplied gas.

Abstract: A cooling apparatus for a fuel cell is provided. The cooling apparatus for a fuel cell includes a reservoir that is configured to store a coolant and an ion filter assembly that is integrally installed at the reservoir and configured to remove bubbles in the coolant.

Abstract: The present invention provides a heating control method for a fuel cell vehicle, in which an additional heating source is used together with a typical electric heater to reduce power consumption and increase fuel efficiency as compared to the sole use of the electric heater. For this purpose, the present invention provides a heating control method for a fuel cell vehicle which comprises an electric heater for heating air supplied to the interior of the vehicle, and a heater core provided in a coolant line for cooling a fuel cell stack and heating the air supplied to the interior of the vehicle by heat exchange with the coolant discharged from the fuel cell stack.

Abstract: A multilayer electronic component, when an internal coil is formed to be perpendicular to insulating layers stacked in a ceramic body and external electrodes are formed on one surface (a lower surface) of a chip device facing a board at the time of being mounted on the board, a surface of a ceramic body to which the internal coil is exposed and on which the external electrodes are to be formed may be easily distinguished.

Abstract: There is provided a multilayer inductor including: a body in which a plurality of dielectric layers are stacked in a width direction; a plurality of first and second internal electrode patterns disposed to oppose each other, having the dielectric layer therebetween and each led to positions of a lower surface of the body spaced apart from each other; and first and second external electrodes formed on a lower surface of the body to be spaced apart from each other and electrically connected to the first and second internal electrode patterns, respectively.

Abstract: A laminated inductor may include a body having a plurality of ceramic layers stacked therein, a plurality of conductive patterns formed on the ceramic layers, and via electrodes disposed between the ceramic layers and connecting the conductive patterns disposed in a vertical direction to form a coil. Each of the conductive patterns may include a plurality of unit patterns disposed in parallel to be spaced apart from each other on each of the ceramic layers.

Abstract: An electric water pump apparatus may include a body having a stator chamber and a rotor chamber therein, a stator having a hollow cylindrical shape and being disposed in the stator chamber and generating a magnetic field, wherein the stator fluidly insulates the stator chamber and the rotor chamber, a rotor disposed in the rotor chamber and enclosed by the stator, wherein the rotor is rotated by the magnetic field, and a pump cover connected to the body and forming a volute chamber therein, wherein the volute chamber and the rotor chamber are fluidly-communicated through a connecting hole formed to the body and a coolant is supplied to the rotor chamber through the connection hole, wherein the stator includes a stator groove formed in an inner circumference therein and the stator groove is fluid-connected to the rotor chamber and the volute chamber through the connection hole.

Abstract: An electric water pump apparatus may include a body having a stator chamber and a rotor chamber therein, a stator having a hollow cylindrical shape and being disposed in the stator chamber and generating a magnetic field, wherein the stator fluidly insulates the stator chamber and the rotor chamber, a rotor disposed in the rotor chamber and enclosed by the stator, wherein the rotor is rotated by the magnetic field, and a pump cover connected to the body and forming a volute chamber therein, wherein the volute chamber and the rotor chamber are fluidly-communicated through a connecting hole formed to the body and a coolant is supplied to the rotor chamber through the connection hole, wherein the stator includes a stator groove formed in an inner circumference therein and the stator groove is fluid-connected to the rotor chamber and the volute chamber through the connection hole.