Hyundai Motor Company

Hyundai Motor Corporation

Other

Industry-University Cooperation Foundation Hanyang University

Dawonsys Co., Ltd.

Sun Soon Park

Sang Uk Kwon

Nam Woo Lee

Seong Pil Ryu

Seo Ho Choi

Jae Won Jung

Dong Hun Lee

Duck Whan Kim

Jae Jun Ko

Soon Il Jeon

Jung Hwan Ryu

Hee Seok Jeong

Hae Ryong Lee

Sun Heum Baek

Keon Yup Chu

Ki Chun Jo

Sung Hoon Jee

Tae Ho Cho

Won Eui Hong

Myoung Ho Sunwoo

Doo Jung Park

The present invention relates to method for depositing an organic material for an organic light emitting device and an organic light emitting device manufactured thereby. The method includes the steps of: applying a premix in which a host and a dopant are premixed, to a first donor substrate; heating the premix by applying an electric field to the first donor substrate; depositing the host and the dopant separated into different layers on a second donor substrate, with the host or the dopant having a relatively low vaporization temperature first deposited from the premix onto the second donor substrate and then the dopant or the host having a relatively high vaporization temperature deposited later onto the second donor substrate; heating the host and the dopant by applying an electric field to the second donor substrate; and depositing the host and the dopant that are uniformly mixed on a target substrate.

Method for depositing organic material for organic light emitting device

Disclosed is an electronic cigarette including a suction part, an atomizer structure body, a liquid storing part, a main body including a switch, and a battery. In this case, the atomizer structure body includes a flexible nonflammable metal net, an absorption part configured to absorb a condensed liquid, a returning part configured to return and supply the condensed liquid, a crucible, and a liquid charging cap.

Electronic cigarette

The present invention provides a fuel cell hybrid system having a multi-stack structure, which maintains the voltage of a fuel cell at a level lower than that of an electricity storage means (supercapacitor) during regenerative braking so that the fuel cell does not unnecessarily charge the electricity storage means, thereby increasing the amount of recovered energy and improving fuel efficiency.

Fuel cell hybrid system having multi-stack structure

The present invention provides a method for controlling the operation of a fuel cell system at low temperature that can suitably prevent flooding in a cathode of a fuel cell stack during low-temperature operation, thus improving the operation stability and durability of the fuel cell stack. In preferred embodiments, the present invention provides a method for controlling the operation of a fuel cell system at low temperature, the method comprising determining whether the temperature of a fuel cell stack reaches a normal temperature; calculating, when it is determined that the temperature of the fuel cell stack is lower than the normal temperature, a target temperature at a cathode outlet to maintain water present in a cathode of the fuel cell stack in a vapor phase based on information related to an operation state of the fuel cell stack detected by an operation state detection means; and calculating a target amount of coolant based on the calculated target temperature at the cathode outlet and the information related to the operation state of the fuel cell stack, and controlling the amount of coolant supplied to the fuel cell stack based on the calculated target amount of coolant.

Method for controlling operation of fuel cell at low temperature

Disclosed is a method for detecting ice blocking of a fuel cell stack. In particular, the method includes periodically calculating a minimum cell voltage of a fuel cell stack from cell voltages measured by a cell voltage monitoring system while reactant gases are supplied to the fuel cell stack and then calculating a change in the minimum cell voltage using a currently calculated minimum cell voltage and a previous minimum cell voltage. It is then determined whether the change in the minimum cell voltage is above a predetermined reference value. When the change in the minimum cell voltage is above the reference value, it is determined that the ice blocking has occurred or is occurring in an anode of the fuel cell stack.

Method for detecting ice blocking of fuel cell stack and controlling fuel cell vehicle using the same

The present invention provides a method for controlling output of a fuel cell to improve fuel efficiency of a fuel cell hybrid vehicle, in which the fuel cell is operated at a constant power at a maximum efficiency point, wherein the fuel cell and a storage means are directly connected if the output and energy of the storage means is insufficient, and the power generation of the fuel cell is stopped when the level of energy of the storage means is increased during stopping or during low power operation such that the fuel cell is intensively operated at the maximum efficiency point, thus improving the fuel efficiency of the fuel cell and the efficiency of the fuel cell system.

Method for controlling output of fuel cell in fuel cell hybrid vehicle

The present invention provides a separator for a fuel cell, in which a water discharge hole such as a venturi tube or a water discharge means including a metal plate for condensing water is provided on a land of the separator being in contact with a gas diffusion layer (GDL) of a fuel cell so that water generated by a reaction is easily discharged from the GDL through the water discharge means.

Separator for fuel cell

The present invention provides a power configuration system for a fuel cell hybrid vehicle and a method for controlling the same, in which a second blocking diode is installed in a main bus terminal at an output terminal of a fuel cell (in front of a first blocking diode) separately from the existing first blocking diode installed in the main bus terminal, the positions of high voltage components for driving the fuel cell are changed from the rear of the first blocking diode to the front of the first blocking diode, and the operations of the high voltage components are appropriately controlled during regenerative braking such that the voltage of the fuel cell may be maintained below that of the supercapacitor.

Power configuration system for fuel cell hybrid vehicle 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.

Current collector of end plate for fuel cell and method for controlling the same

The present invention provides an idle stop-start control method of a fuel cell hybrid vehicle including a fuel cell as a main power source and a storage means as an auxiliary power source, in which air and hydrogen supply is cut off during low power operation where the efficiency of the fuel cell is low and during regenerative braking such that residual oxygen and hydrogen are consumed to drop the voltage of a fuel cell stack, thus stopping the operation of the fuel cell.

Growing community of inventors

Gyeonggi-do, South Korea

Sun Soon Park