Lg Electronics Inc.

Lg Chem, Ltd

Seung-Tae Ko

Myung-Seok Park

Yong-Jun Hwang

Seong-Geun Heo

Cheol-Hwan Kim

Kyu-Jung Kim

Myeong-Ho Lee

Tae-Hee Cho

Hong Seok Choi

Bon-Gwan Gu

Tae-Won Kim

Sang-Heon Lee

Hyun-Jae Lee

Gil-Yong Lee

Jun-Seong Park

Ki-Dong Kim

Byung-Tak Park

Jung-Gyu Park

Sung-Nam Ryoo

Sun-Hoe Kim

Hyung-Kyu Youk

Sun-Gu Kwon

Geun-Ho Jin

A power controlling apparatus for a fuel cell system includes a fuel cell controller which analyzes power state information of a fuel cell system, transmits a power state information signal based on the analysis to a power conversion controller, receives a load request power information signal from the power conversion controller, analyzes the received load request power information signal, and changes an outputtable power amount based on the analysis. The power controlling apparatus also includes a power conversion controller which transmits a load request power information signal based on power information requested by a load to the fuel cell controller, analyzes the power state information signal transmitted by the fuel cell controller, and controls a power convert amount based on the analysis.

Power controlling apparatus for fuel cell system and method thereof

A fuel cell system comprises: a fuel cell stack () where an anode () and a cathode () are arranged under a state that an electrolyte membrane is positioned therebetween; a fuel tank () for storing a fuel; a fuel circulation supply means () for circulation-supplying a fuel stored in the fuel tank () to the anode of the fuel cell stack; an air supply unit () connected to the cathode of the fuel cell stack () by an air supply line, for supplying oxygen, etc. to the cathode (); a sensing unit () for measuring a concentration of at least one of fuels supplied to the anode () and a control unit for receiving a signal of the sensing unit () and informing replacement time of a fuel. According to this, a fuel usage is maximized by informing replacement time of a used fuel and a filter () for filtering impurity by detecting a fuel consumption degree and an impurity generation amount.

Fuel cell system

A multi-unit fuel cell system that includes a common-use reforming unit configured to supply hydrogen to multiple fuel cell units that are installed in multiple units, such as apartments within an apartment building. In one example embodiment, a fuel cell system including a common-use reforming unit and multiple fuel cell units is disclosed. The common-use reforming unit is configured to supply hydrogen to the plurality of fuel cell units. Each fuel cell unit includes a stack unit, an air supplying unit, an integral heat exchange unit, a hot-water supplying unit, an auxiliary heat supplying unit, and an electric output unit.

The present invention discloses a power supply apparatus and method for a line connection type fuel cell system. The power supply apparatus for the line connection type fuel cell system includes: a storing unit for pre-storing a normal region and a warning region according to an operating condition of a fuel cell and a correlation between an output voltage and an output current of the fuel cell; and a control unit for detecting an operating point on the basis of the operating condition of the fuel cell, comparing the detected operating point with the normal region and the warning region, and outputting a control signal for increasing or decreasing the output current of the fuel cell according to the comparison result.

Power supply apparatus and method for line connection type fuel cell system

A fuel cell system comprises: a DBFC for generating a power by receiving a fuel; a PEMFC for generating a power by receiving hydrogen, a byproduct generated at an anode of the DBFC after a reaction, as a fuel; a supplementary power partially charged by a power generated at the DBFC and the PEMFC and discharging the charged power; a load sensing unit for sensing a load connected to the DBFC, the PEMFC, and the supplementary power; and a control unit for controlling a power of the DBFC, the PEMFC, and the supplementary power according to a load sensed by the load sensing unit and thereby selectively supplying to the load. According to this, hydrogen generated at the DBFC is recycled, and a load amount is sensed thus to stably correspond to a load variation, thereby maximizing a fuel usage efficiency and stably driving the system.

A fuel cell system comprises: a fuel storage means for storing a fuel; a direct borohydride fuel cell (DBFC); a fuel circulation supply means for circulation and supplying a fuel to an anode of the DBFC from the fuel storage means; a polymer electrolyte membrane fuel cell (PEMFC) for receiving hydrogen generated at the anode of the DBFC as a fuel; a hydrogen control means for controlling hydrogen generated from the anode of the DBFC in correspondence to an amount required by the PEMFC and thereby supplying the hydrogen to the PEMFC; and an air supply means for supplying air to a cathode of the DBFC and an cathode of the PEMFC.

Fuel cell system and controlling method thereof

A fuel cell system is provided which produces improved reaction speed and performance. The fuel cell system includes a fuel cell stack including an anode, a cathode, and an electrolyte membrane disposed therebetween. A fuel tank supplies hydrogen-based fuel to the anode of the fuel cell stack, and an oxidant supplying unit adds ozone to oxygen- including air supplies it to the cathode of the fuel cell stack. The ozone supplied to the cathode of the fuel cell stack accelerates a reaction speed in the fuel cell stack, thereby producing a relatively high current density and improving fuel cell performance.

Growing community of inventors

Daegu, South Korea

Seung-Tae Ko