Hyundai Motor Company

Dong Jo Oh

Jong Hyun Lee

Yong Gyu Noh

Bu Kil Kwon

Young Min Kim

A hydrogen purging device for a fuel cell system includes a humidifier that humidifies dry air supplied from an air blower, using moist air discharged from a cathode of a stack and supplies the humidified air to the cathode. A water trap and a hydrogen recirculation blower are sequentially connected to an outlet of an anode, wherein a hydrogen outlet of the water trap and an inlet of the humidifier are connected by a cathode-hydrogen purging line for purging hydrogen to the cathode so that the hydrogen discharged from the anode of the fuel stack is purged to the cathode during idling or during normal driving.

Hydrogen purging device and method for fuel cell system

A method for controlling starting of a fuel cell vehicle is provided. The method includes measuring a time interval for stopping of a fuel cell and a cell average voltage of the fuel cell when the fuel cell vehicle stops. A starting mode is then switched to a catalyst activating mode when the time interval exceeds a predetermined time or the cell average voltage is greater than a predetermined voltage. The cell average voltage is decreased to be less than the predetermined voltage and the fuel cell is started by supplying air to a cathode of the fuel cell.

Device and method for controlling starting fuel cell vehicle

A fuel cell startup apparatus and method reduces high-voltage generation and corrosion of a cathode electrode that may occur because the density of oxygen is locally high in a cell near a central flow distributor after long-term parking of a fuel-cell vehicle. To this end, density control gas is selectably injected into a fuel supply line prior to supply of reaction gas of hydrogen and air in a fuel cell startup process after long-term parking to forcedly mix anode-side gas in the fuel supply line and the cell with the density control gas.

Fuel cell startup apparatus and method

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.

Fuel cell

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.

Fuel cell system and the operating method thereof

Disclosed is a fuel cell startup apparatus and method, particularly, a fuel cell startup method, by which in an emergency situation such as when a high-voltage battery mounted on a fuel cell vehicle is completely discharged, fuel cell startup can be achieved without assistance of a high-voltage power source. To this end, an air supply port, which is connected to an emergency air supplier, is formed on an air supply line configured to supply air to a cathode of a fuel cell stack, and the emergency air supplier supplies the air to the fuel cell stack when complete discharge of a high-voltage battery and is removably engaged to the air supply port.

Growing community of inventors

Gyeonggi-do, South Korea

Dong Jo Oh