Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Keun Bong Ham

Dong Hun Lee

Jong Hyun Lee

Sung Do Kim

Kyu Il Lee

Chang Seok You

Min Su Kang

Bo Ki Hong

Ju Hyun Kim

Jung Han Yu

Chang Ha Lee

Ji Tae Kim

Kyoung Ku Ha

Chang Seok Ryu

An interlock diagnosing system and method for a high voltage device includes: a detection circuit between a transmitter providing a voltage and a receiver receiving the voltage provided by the transmitter; a plurality of resistors connected in parallel to the detection circuit via a respective plurality of connectors engaged between the plurality of resistors and the detection circuit; and a detector detecting engaged states of the plurality of connectors based on at least one of the voltage provided by the transmitter or the voltage received by the receiver, or both. The detector calculates a resistance value of the detection circuit based on the voltage provided by the transmitter and the voltage received by the receiver and detects the engaged states of the plurality of connectors based on the calculated resistance value. Each resistor has a different resistance value from each other. The detector detects a disengaged connector among the plurality of connectors based on the calculated resistance value.

Interlock diagnosing system and method for a high voltage device

An interlock diagnosing system and method for a high voltage device include: a detection circuit extending between a transmitter providing a voltage and a receiver receiving the voltage provided by the transmitter; a plurality of resistors, each being connected in parallel to the detection circuit via a respective one of a plurality of connectors engaged between the plurality of resistors and the detection circuit; and a detector detecting engaged states of the plurality of connectors based on the voltage provided by the transmitter or the voltage received by the receiver.

A water electrolysis system includes a water electrolytic stack, a water reservoir connected to the water electrolytic stack to supply water to the water electrolytic stack, a water circulation pump supplying the water in the water reservoir to the electrolytic stack; and a control unit configured to, during an operation stoppage of the electrolysis system, control the driving of the water circulation pump to convert the water in the electrolytic stack from an acidic condition to a neutral condition and to regulate a unit cell voltage of the electrolytic stack to a voltage such that an electrolysis reaction does not occur and a chemical state of an anode catalyst is stably maintained.

Water electrolysis system

Introduced is an fuel cell power net including a fuel cell configured to generate power through a reaction between a fuel gas and an oxidizing gas, a power storage device configured to be charged with power generated by the fuel cell or discharged to supply power, a main line configured to electrically connect the fuel cell and the power storage device to each other; a main relay disposed on the main line so as to break or make an electrical connection between the fuel cell and the power storage device, a bypass line which is branched from the main line, bypasses the main relay, and is connected to the power storage device, a bypass relay disposed on the bypass line so as to break or make an electrical connection of the bypass line, and a controller configured to control the main relay or the bypass relay such that the power stored in the storage device is supplied to the fuel cell while the power generation of the fuel cell is stopped.

Fuel cell power net system and control method therefor

A control method and system for driving of a motor and a control method of driving of an air compressor of a fuel cell system using the same include calculating an electrical rotation frequency of a motor, calculating a driving torque frequency of the motor based on the calculated electrical rotation frequency of the motor, and controlling torque of the motor to be repeatedly turned on/off at the calculated driving torque frequency.

Control method and system for driving of motor and control method of driving of air compressor of fuel cell system using the same

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

Disclosed are a method and a system for feedback-controlling including controlling a current supply unit in a controller so that an output applied to a driving unit from the current supply unit is repeatedly turned on/off by predetermined period and duty. The method also includes feedback-controlling of an output value of the controller applied to the current supply unit from the controller so that the output of the current supply unit follows a target value. The feedback-controlling includes an integration control process and stops the integration control process in the period that the current supply unit turns off the output thereof.

Method and system for feedback-controlling

A safety apparatus for portable power generation of a fuel cell vehicle and an operation method thereof are provided. The safety apparatus includes a fuel cell that supplies power required for driving a motor of the fuel cell vehicle and a battery used as an auxiliary power source of the fuel cell. A bidirectional power converter adjusts input power and output power of the battery. A connection port connects to a portable power generator positioned extraneous to the fuel cell vehicle and a relay is connected to the connection port to adjust supplying of power to the portable power generator. A fuel cell controller determines whether a vehicle state satisfies a portable power generation mode entering condition when start-up of the fuel cell vehicle is turned on and operates the relay based on a confirmation result to perform portable power generation.

Growing community of inventors

Yongin-si, South Korea

Keun Bong Ham