Patent application number | Description | Published |
20090017745 | Ventilation apparatus for fuel cell vehicle - The present invention provides a ventilation apparatus for a fuel cell vehicle, which can rapidly remove high-temperature air generated in the inside of a stack case by moving the same to an air cleaner using a suction pressure of air supplied for the operation of the fuel cell vehicle, reduce the risk incurred due to hydrogen leakage by moving leaking hydrogen to the air cleaner, and maintain the temperature of a fuel cell stack constant. | 01-15-2009 |
20100098977 | CURRENT COLLECTOR OF END PLATE FOR FUEL CELL AND METHOD FOR CONTROLLING THE SAME - The present invention provides a current collector of an end plate for a fuel cell and a method for controlling the same, in which a plurality of current collector plates having different resistance values is mounted on an end plate so that the current of a fuel cell is consumed during cold start and during low power operation to improve cold startability of the fuel cell and, further, the durability of a membrane electrode assembly (MEA) is improved due to an increase in voltage during low power operation. | 04-22-2010 |
20110086292 | JOINING DEVICE FOR FUEL CELL STACK AND FUEL CELL STACK PROVIDED WITH THE SAME - The present invention features a fuel cell stack that preferably includes an electricity generating assembly having a plurality of unit cells that are suitably disposed one after another; a pair of end plates pressedly disposed respectively at upper and lower ends of the electricity generating assembly; and a joining device suitably engaging the end plates by a rope, where pressure is applied to the electricity generating assembly by means of tension of the rope, and the length and tension of the rope is suitably controlled. | 04-14-2011 |
20110123882 | SURFACE PRESSURE CONTROLLING DEVICE FOR FUEL CELL STACK - The present invention provides a surface pressure controlling device for a fuel cell stack, in which an inflator capable of being expanded by pneumatic or hydraulic pressure is mounted in an end plate so as to control the surface pressure required for the assembly of the fuel cell stack to be maintained above a predetermined level. | 05-26-2011 |
20120135327 | MONITORING THE OPERATIONAL STATE OF A FUEL CELL STACK - A technique is described herein for monitoring the operational state of a fuel cell stack by the detection of nonlinearity in such a manner that an external test signal for frequency response is generated and applied to the fuel cell stack during operation, the resulting signal output from the fuel cell stack is measured, and the harmonic content of the measured signal is analyzed, the method including: applying a multiple frequency test signal comprising at least two sinusoidal waves as the test signal for frequency response to the fuel cell stack; and analyzing the resulting current or voltage signal output from the fuel cell stack. | 05-31-2012 |
20130017468 | MANIFOLD BLOCK FOR FUEL CELL STACKAANM Kim; Duck WhanAACI SeoulAACO KRAAGP Kim; Duck Whan Seoul KRAANM Kum; Young BumAACI SeoulAACO KRAAGP Kum; Young Bum Seoul KRAANM Kim; Sae HoonAACI YonginAACO KRAAGP Kim; Sae Hoon Yongin KRAANM Yu; Jung HanAACI YonginAACO KRAAGP Yu; Jung Han Yongin KR - The present invention provides a manifold block for a fuel cell stack, coupled to a fuel cell stack module and having a gas passage and a cooling water passage. The manifold block includes an insulating member and an insulating cover. The insulating member is inserted into the cooling water passage and contacts an inner surface of the cooling water passage. The insulating member has a tube-like shape and electrically insulates the inner surface of the cooling water passage. The insulating cover is inserted into the cooling water passage and contacts an inner surface of the insulating member. The insulating cover fixes and protects the insulating member. | 01-17-2013 |
20130020205 | APPARATUS AND METHOD FOR FORMING OXIDATION LAYER ON MANIFOLD BLOCK FOR FUEL CELL STACK - Disclosed is an apparatus and method for forming an oxidation layer on a manifold block for a fuel cell stack, which forms an oxidation layer uniformly over the entire surface of a long and complicated internal flow field of a manifold block. In particular, the apparatus for forming an oxidation layer on a manifold block for a fuel cell stack includes: an electrolyte bath which contains an electrolyte required for the formation of the oxidation layer, an electrode for supplying a required electron flow for the formation of the oxidation layer from a power supply to the manifold block immersed in the electrolyte of the electrolyte bath and to the electrolyte, and an air supply for supplying oxygen to the electrolyte. Even more particularly, the electrode connected to the electrolyte is inserted into each internal flow field of the manifold block to provide an effective electron flow therein. | 01-24-2013 |
20130266891 | JOINING DEVICE FOR FUEL CELL STACK AND FUEL CELL STACK PROVIDED WITH THE SAME - The present invention features a fuel cell stack that preferably includes an electricity generating assembly having a plurality of unit cells that are suitably disposed one after another; a pair of end plates pressedly disposed respectively at upper and lower ends of the electricity generating assembly; and a joining device suitably engaging the end plates by a rope, where pressure is applied to the electricity generating assembly by means of tension of the rope, and the length and tension of the rope is suitably controlled. | 10-10-2013 |
20130295481 | MANIFOLD BLOCK FOR FUEL CELL STACK - Disclosed is a manifold block for a fuel cell, which provides excellent electrical insulation for a coolant flow channel in an internal flow channel. More specifically, a manifold block for a fuel cell stack, includes a coolant interface formed of a polymer insulating material and coolant flow channels; and a reactant gas interface formed of a metal material and including reactant gas flow channels. In particular, the reactant and coolant interfaces are mounted to a stack module and, at the same time, are integrally bonded to each other. | 11-07-2013 |
20130295482 | HYDROGEN SUPPLY SYSTEM FOR FUEL CELL WITH INTEGRATED MANIFOLD BLOCK - Disclosed is a hydrogen supply system for a fuel cell, which has an integrated manifold block in which components for hydrogen supply are integrated and modulated. In particular, a hydrogen supply line, a hydrogen discharge line, and a hydrogen recirculation line are formed in a manifold block mounted on the outside of a plurality of stack modules of a fuel cell stack. Additionally, components of the hydrogen supply system including components for supplying and discharging hydrogen and components for recirculating hydrogen are integrally mounted in predetermined positions of the hydrogen supply line, the hydrogen discharge line, and the hydrogen recirculation line to modularize the manifold block and the components of the hydrogen supply system. | 11-07-2013 |
20140158281 | METHOD FOR MANUFACTURING MANIFOLD FOR FUEL CELL - A method for manufacturing a manifold for a fuel cell with a multilayer structure by injection-molding individual manifolds, each having welding projections and welding guides, and bonding the injection-molded individual manifolds by vibration welding includes arranging welding projections of an upper individual manifold and welding guides of a lower individual manifold to be engaged with each other while maintaining a uniform gap between each other to bond a plurality of individual manifolds in an up and down stacking structure, pressing the lower individual manifold upward, and applying vibration to the upper individual manifold in the left and right direction, thus bonding the upper and lower individual manifolds. Among the welding projections of the upper individual manifold, a non-horizontal welding projection whose longitudinal direction does not coincide with the vibration direction of the individual manifold has a variable height. | 06-12-2014 |