Hyundai Motor Company

Lg Electronics Inc.

Kia Motors Corporation

Kia Corporation

Ji Tae Kim

Kyu Il Lee

Seong Pil Ryu

Boung Ho Min

Guei Sam Lim

Jae Won Jung

Sung Hwa Ok

Jaemoon Lee

Keun Bong Ham

Ho Sung Kang

Youn Jae Lee

Jae-Moon Lee

Gyoung Soo Kim

Seok Jung Hyun

Sung Suk Ok

An apparatus and a method for controlling a fuel cell system includes a fuel cell system including a fuel cell stack, a balance of plant for operating the fuel cell stack, and a fuel cell controller configured for controlling the BOP, a first power converter located between the fuel cell stack and a first voltage battery and including a bidirectional low voltage DC/DC converter, a second power located between the fuel cell stack and a second voltage battery to include a single bidirectional DC/DC converter module, and a controller configured for operating the first power converter or the single bidirectional DC/DC converter module of the second power converter, when the fuel cell system is started or stopped, and controlling the first power converter or the second power converter to supply driving power to the BOP using electrical energy of the first voltage battery or the second voltage battery.

Apparatus and method for controlling fuel cell system

An integrated fuel cell control system is provided. The integrated fuel cell control system includes at least one sensor, at least one hydrogen on/off valve, and a fuel control unit (FCU). The FCU is configured to directly operate the at least one sensor and the at least one hydrogen on/off valve in real time and to determine a supply pressure of hydrogen supplied to a fuel cell. Thereby, noise between controllers may be removed and costs may be reduced.

Integrated fuel cell control system and operating method thereof

A method and system for maintaining stability of a system of a fuel cell vehicle are provided to prevent malfunction of sensors of a low voltage DC-DC converter and the respective controllers. A start timing of a fault diagnosis for the low voltage DC-DC converter and the respective controllers is determined and a deviation between voltages of the sensors of the low voltage DC-DC converter and the respective controllers is detected to determine whether the low voltage DC-DC converter and the respective controllers fail.

Method and system for maintaining stability of system of fuel cell vehicle

A method and an apparatus for controlling charging of a low voltage battery are provided. The method includes determining a consumption pattern of an auxiliary machinery based on a consumed power of the auxiliary machinery and setting a base charged voltage based on the consumption pattern of the auxiliary machinery. Further, a charged voltage is set for the low voltage battery based on the base charged voltage, a driving mode of a vehicle, and a state of charge of a high voltage battery.

Method and apparatus for controlling charging of low voltage battery

An apparatus for compensating for torque of a fuel cell electric vehicle includes: a storage configured to store a first look-up table in which pedal amount correction coefficients corresponding to degradation rates of a fuel cell stack are recorded and a second look-up table in which torques corresponding to pedal amounts are recorded; a degradation rate calculator configured to calculate a degradation rate based on a maximum voltage and an output voltage of the fuel cell stack; a correction coefficient searcher configured to search for a correction coefficient corresponding to the calculated degradation rate using the first look-up table; a pedal amount detector configured to detect a pedal amount indicating a degree to which an acceleration pedal is pressed; and a torque compensator configured to compensate for torque by compensating for the detected pedal amount based on the searched correction coefficient using the second look-up table.

Apparatus for compensating for torque of fuel cell electric vehicle and method thereof

A technique for supercharging a fuel cell is provided. In particular, a speed of an acceleration pedal is calculated and a first output order value of a fuel cell stack or a second output order value of the fuel cell stack which is smaller than the first output order value is set, in accordance with the value of the calculated speed. An amount of air flow corresponding to the set first output order value or the second output order value to be supplied to the fuel cell stack is then controlled accordingly.

System and method for supercharging fuel cell

Discussed are a diagnostic cartridge and a control method for the diagnostic cartridge. The cartridge includes a sample port through which a sample is injected, a first chamber moving the sample injected from the sample port, a second chamber moving a substrate solution, a first membrane formed at a distal end of the first chamber to function as a valve for preventing other substances from being injected into the first chamber after the sample is completely moved, and a second membrane formed at a distal end of the second chamber to function as a valve for preventing other substances from being injected into the first chamber after the substrate solution is completely moved.

Diagnostic cartridge and control method for diagnostic cartridge

A method and apparatus for controlling a converter of a fuel cell vehicle that uses a power control value generated based on an inverter DC terminal voltage as a reference value, and generates a current reference signal based on the reference value is provided. More specifically, the method and apparatus output a final reference signal that generates a pulse width modulation (PWM) signal by compensating for the current reference signal based on output terminal current of the converter. A peak value is then increased by amplifying a triangular wave signal, and the amplified triangular wave signal and the compensated final reference signal according to the current reference signal change rate are compared. A PWM signal having a predetermined duty ratio is then generated to control the converter.

Method and apparatus for controlling converter in full cell vehicle

Disclosed is a micro-fluidic system including a lower substrate, an upper substrate formed opposite to the lower substrate and formed with an air injection path, and a micro-fluidic device interposed between the upper and lower substrates, wherein the micro-fluidic chamber includes a fluid chamber filled with a fluid and the fluidic chamber is physically connected to the air injection path.

Microfluidic system

A method and system for controlling a fuel cell vehicle are provided in which a bidirectional converter monitors a state of a fuel cell vehicle in real time to improve control responsiveness in a transient state of the fuel cell vehicle. The method includes receiving, by a bidirectional converter, a command for a current limiting value in the high voltage battery from the fuel cell controller while the fuel cell vehicle is driven. In addition, the bidirectional converter is configured to determine whether the fuel cell vehicle is switched to a predetermined mode and change the current limiting value of the high voltage battery. A predetermined control is performed by the bidirectional converter based on the changed current limiting value when the fuel cell vehicle is switched to the predetermined mode.

Method and system for controlling a fuel cell vehicle

A broadcasting program storing method of a mobile communication terminal and a mobile communication terminal using the same are disclosed. The method includes according to an embodiment allocating and storing a presently receiving broadcasting stream to and in at least one time section of a plurality of time sections while playing a broadcasting stream, and selecting at least one time section from the plural time sections to reproduce a broadcasting stream allocated to the selected time section. Thus, the broadcasting stream can be stored in real time while viewing the broadcasting program and the stored broadcasting stream can be easily searched for or reproduced.

Method of storing broadcasting program and mobile communication terminal using the same

A mobile communication terminal and operating method thereof. The terminal includes a housing configured such that one portion of the housing can rotate against the other portion of the housing. A joint mutually joins an upper housing with a lower housing of the mobile communication terminal and enables one of the upper and lower housings to be obliquely twisted to rotate against the other. After providing an input signal to the mobile communication terminal having thus joined, twisting to rotate either the upper or lower housing against either the lower or upper housing in one direction obliquely orients a microphone near a user's mouth. Twisting the upper and/or lower housing also sends the input signal to a base station automatically.

Growing community of inventors

Gyeonggi-do, South Korea

Ji Tae Kim