Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Tsinghua University

Xiaobing Luo

Hye-Jung Cho

Dong-kee Sohn

Sang-Kyun Kang

Jae-Yong Lee

Xing Yang

Hyuk Jae Chang

Hae-kyoung Kim

Sang-kyun Kang

Do-young Seung

Zhaoying Zhou

Xiongying Ye

Provided is a liquid-gas separator of a direct liquid feed fuel cell. The liquid-gas separator includes an empty ball shaped main body; a gas extraction membrane which is attached to an opening formed in the main body, and selectively extracts gas from the main body; an inlet which is formed in the main body and guides the liquid and gas into the main body; an outlet which is formed on the main body and guides the liquid to the outside of the main body; and a flexible tube having a hollow structure, one end of which is connected to the outlet and the other end of which is immersed in the liquid fuel.

Liquid-gas separator for direct liquid feed fuel cell

A fuel supply device for direct methanol fuel cells. The fuel supply device for direct methanol fuel cells includes a fuel tank to store a liquid fuel, a cavity plate to store the liquid fuel transferred from the fuel tank, a thin film type active pump welded on the bottom of the cavity plate to bring about a movement of the cavity plate, and a nozzle plate disposed on the cavity plate to eject the liquid fuel. Accordingly, it is possible to actively control a liquid fuel in a needed amount and supply it to a fuel cell in accordance with a use mode of an electronic device and effectively remove by-products of the fuel cell, thereby improving the efficiency of the fuel cell.

Fuel supply device for direct methanol fuel cells

A liquid fuel mixing apparatus includes a water chamber, a fuel chamber, and a partition arranged substantially vertically between the water chamber and the fuel chamber. The partition includes a passage to permit communication between the water chamber and the fuel chamber. The water chamber includes a first port for the inflow of water and air recovered from a cathode of the fuel cell. The fuel chamber includes a third port for the inflow of unreacted fuel and COfrom an anode of the fuel cell, a fourth port for the inflow of a liquid fuel from a liquid fuel tank, and a fifth port for the outflow of a mixed fuel to the fuel cell.

Liquid fuel mixing apparatus and direct liquid feed fuel cell system including the same

A liquid-gas separator for a direct liquid feed fuel cell includes a tube having an opening portion at a sidewall thereof; liquid extracting members that selectively transmit the liquid in the tube and located at both ends of the tube; a gas extracting membrane that selectively transmits the gas and covers the opening portion; an inlet that guides the liquid and the gas into the tube; chambers that surround an outer side of the liquid extracting member; and outlets that guide the liquid in the chambers to the outside by being connected to the chamber.

A diaphragm air pump comprises a pump chamber, a diaphragm and one or more piezoelectric beams or bimorphs. Fluid flows into the pump chamber and then flows out of it, the diaphragm is provided within the pump chamber, and one or more central openings are formed in the diaphragm. One or more central check valves are provided in the central openings. The diaphragm is just bonded with piezoelectric beams, not fixed to the lower housing of the pump chamber in order to get large displacement. With the provided diaphragm air pump, it is possible to actively adjust the air quantity according to the requirement for fuel cell or a part-to-be-cooled, and it is also possible to reduce noise and power consumption compared with a conventional fan type cooler or air pumps.

Diaphragm air pump

An apparatus for measuring a methanol concentration is provided. The apparatus is located in a pipe which supplies liquid fuel to the anode of a direct liquid feed fuel cell, and may include a vertical supporting beam located in the pipe; a horizontal plate located on the supporting beam and having an upper surface with a predetermined roughness; and a sensor fixed to a side of the supporting beam, which generates an electrical signal through a transformation of the supporting beam resulting from variations in a viscosity of the liquid fuel running through the pipe.

Growing community of inventors

Yongin-si, South Korea

Xiaobing Luo