Samsung Sdi Co., Inc.

Woong-Ho Cho

Dong-Hyun Kim

Ming-Zi Hong

Hyun Jung Kim

Dong-Rak Kim

Ju-Yong Kim

Hyun Sook Kim

Jun-Won Suh

Sung-Chul Lee

Jong-Ki Lee

Man-Seok Han

Seok-Rak Chang

Jin-Hong An

Dong-kee Sohn

Sang-kyun Kang

Won-Hyouk Jang

Min-Jung Oh

Ria Ju

Jae-Woong Choi

Sang-Hyeon Choi

Sang-Min Jeong

Sang-hyeon Choi

Yasuki Yoshida

Hyung-Keun Lee

Hyun Kim

A fuel cell system including a fuel cell stack having a plurality of unit cells is provided. A method of driving the fuel cell stack is also provided. The method may include supplying a fuel to a fuel cell stack, supplying an oxidizer to the fuel cell stack, controlling supply of the fuel and the oxidizer to operate the fuel cell stack, calculating a total operation time of the fuel cell, and/or varying a stack activation period in which the oxidizer is blocked to the fuel cell stack according to the total operation time and a stack activation cycle of which the stack activation period is generated.

Fuel cell system and driving method for the same

A method of driving a fuel cell system is disclosed. The method of driving the fuel cell system may include supplying water to a reformer by pressing a pump pipe to pressing members to move the pressing members in a first direction, stopping power generation including stopping a supply of fuel and oxidant to the reformer, and discharging water in the reformer by moving the pressing members in a second direction opposite to the first direction while pressing the pump pipe with the pressing members. A fuel cell system is also disclosed. The fuel cell system includes a reformer, a fuel cell stack and a water transferring pump. The water transferring pump includes pressing members and a pump pipe. The pump pipe is in fluid communication with a water transferring pipe.

Fuel cell system and driving method of the same

A fuel cell system includes a fuel cell stack, an oxidizer supply unit, a reformer, a fuel tank, and a water tank. The reformer generates a hydrogen-containing reformed gas reformed from hydrocarbon-based fuel and supplies it to the fuel cell stack. The fuel tank supplies the hydrocarbon-based fuel to the reformer. The water tank supplies water to the reformer. The reformer includes a reforming unit configured to have a reforming reaction generated therein, a combustion unit configured to supply heat energy to the reforming unit, and a carbon monoxide reduction unit configured to reduce the concentration of carbon monoxide in a reformed gas discharged from the reforming unit. A combustion gas pipe is connected to the combustion unit. A reformed gas pipe is disposed between the reforming unit and the carbon monoxide reduction unit. At least one of the combustion gas pipe and the reformed gas pipe is configured to pass through the inside of the water tank or to raise a temperature of the water tank through contact with the water tank, thereby preventing the freezing of the water tank.

Fuel cell system having a reformer

A fuel cell system includes a fuel cell stack, a reformer which generates a reformed gas through a reforming reaction between a gaseous fuel and water and supplies the reformed gas to the fuel cell stack, a fuel tank which compresses the gaseous fuel, stores the compressed fuel in an at least a partially liquid phase, and supplies the gaseous fuel to the reformer, a water tank connected to the fuel tank and the reformer to store water and to supply the water to the reformer by an internal air pressure of the fuel tank, and a first valve installed in a connection line connecting the water tank to the fuel tank to selectively open or close the connection line according to an electrical on/off pulse signal.

Fuel cell system having a valve controlling the flow of water to a reformer based on fuel tank pressure

There is provided a fuel cell system capable of improving the performance and operational stability of the fuel cell system by measuring the exact amount of flow of an oxidizer that is supplied to the fuel cell system. The fuel cell system includes a stack for generating electricity by an electrochemical reaction of a fuel and an oxidizer, an oxidizer supply device for supplying an oxidizer to the stack. A volume flow meter coupled to the oxidizer supply device. The volume flow meter measures a volume flow the oxidizer.

Fuel cell system

A fuel cell system and a control method thereof are capable of preventing anode flooding due to a temperature difference between a stack and reformate upon starting a fuel cell system. The method of controlling a fuel cell system including steps of detecting a temperature of a fuel cell stack, detecting a temperature of reformate that is generated in a fuel reformer and then is supplied to the fuel cell stack through a heat exchanger, and setting the temperature of the reformate to be lower than the temperature of the fuel cell stack during a starting time of the fuel cell system.

Fuel cell system and method of controlling the same

A fuel cartridge coupler to couple a cartridge body storing fuel to a fuel cell system, the fuel cartridge coupler including: a first coupling member arranged in the cartridge body; a second coupling member assembled with the first coupling member in the fuel cell system; a first nozzle assembly including a first fluid path to discharge fuel stored in the cartridge body, the fuel cartridge being elastically supported by the first coupling member and biased by the second coupling member to open and close the first fluid path; and a second nozzle assembly including a second fluid path to inject the fuel passing through the first fluid path into the fuel cell system, the second nozzle assembly being elastically supported by the second coupling member and biased by the first nozzle assembly to open and close the second fluid path.

Fuel cartridge coupler for fuel cell

A flowing device for an optics-based methanol sensor includes an inner housing that surrounds the optics-based methanol sensor, an outer housing that surrounds the inner housing, a flow channel in the inner housing formed on a totally reflecting surface of the optics-based methanol sensor, a fuel inlet that is formed through the inner and outer housings and supplies liquid fuel to the flow channel, and a fuel outlet that is formed through the inner and outer housings and discharges the liquid fuel that has passed through the flow channel to an outside of the outer housing.

Flowing device for optics-based methanol sensor

Growing community of inventors

Yongin-si, South Korea

Woong-Ho Cho