Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Other

Jae Young Shim

Kang Sik Jeon

Sung Ho Yang

Young Pin Jin

Hyo Jin Park

Jae Hun Jang

Jae Won Jung

Seung Yoon Lee

Hyun Wook Shin

Min Gon Kim

Ji Hwan Yu

An apparatus for controlling a fuel cell includes a cooling module that cools a fuel cell stack, a first temperature sensor that measures ambient air temperature of a vehicle, and a processor that, when a cooling fan of the cooling module is detected to be defective, determines a fail-safe control method depending on a defect situation of the cooling fan, sets a first limit level depending on the ambient air temperature, sets a second limit level depending on a state of charge (SOC) of a battery and an output requirement, and controls limitation of output of the fuel cell stack, based on at least one of the fail-safe control method, the first limit level, or the second limit level.

Apparatus and method for controlling fuel cell

A fuel cell system includes a fuel cell stack made by stacking a plurality of cells and configured to generate power by being supplied with fuel gas and oxidation gas, a high-voltage battery configured to supplement the power generated by the fuel cell stack while being charged with the power generated by the fuel cell stack or being discharged, a converter provided between the fuel cell stack and the high-voltage battery and configured to change an output voltage or an output current of the fuel cell stack, a power control unit configured to control the fuel cell stack to generate power when the fuel cell stack is requested to be diagnosed, the power control unit being configured to adjust the output current of the fuel cell stack to a predetermined current, and a voltage sensing unit configured to sense a voltage of the fuel cell stack or voltages of the plurality of cells included in the fuel cell stack in the state in which the output current of the fuel cell stack is the predetermined current.

Fuel cell system and apparatus and method for diagnosing same

A method for controlling a fuel cell vehicle is provided. The method includes setting a target purge degree of an anode gas and a target opening degree of an air pressure control valve and determining whether a fuel cell stack is in a power generation stop state. When the fuel cell stack is in the power generation stop state, when the anode gas is purged from the anode based on the target purge degree and the target opening degree, whether hydrogen in the anode gas will flow backwards to a stack enclosure is determined. When the hydrogen flows backwards, at least one of the target purge degree and the target opening degree to a level at which the backflow of the hydrogen is prevented is modified, and the anode gas from the anode based on the modified target purge degree and the modified target opening degree is purged.

Method for controlling fuel cell vehicle

A control method for a motor-driven vehicle is provided. The method includes calculating a correction torque of a drive motor through a difference between speeds of wheels or a variance rate of the difference between speeds of the wheels and comparing a calculated correction torque with a current required torque of the drive motor. When the calculated correction torque is greater than the current required torque, the drive motor is operated based on the current required torque. When the calculated correction torque is less than or equal to the current required torque, the drive motor is operated based on the calculated correction torque, or the required torque of the drive motor is corrected to correspond to the calculated correction torque and the drive motor is operated based on a corrected required torque of the drive motor.

Control method and control system for motor-driven vehicle

A method for controlling a fuel cell system includes steps of: (a) determining whether hydrogen (H) is detected in an interior space of a stack enclosure in which a fuel cell stack is accommodated; (b) stopping power generation that is performed using the stack when it is determined in step (a) that the hydrogen is detected; (c) opening a purge valve to discharge gases circulating in an anode through the purge valve, and opening a condensate discharge valve to discharge condensate contained in a water trap through the condensate discharge valve; and (d) determining whether the hydrogen discharged through at least one of the purge valve and the condensate discharge valve in step (c) flows back to the interior space based on Hconcentration in the interior space.

Method for controlling fuel cell system

A method of controlling energy supply in a fuel cell vehicle includes storing an output current of a fuel cell as a pre-limited current when a cell voltage ratio reaches a minimum cell voltage ratio, setting a limited output current of the fuel cell as the pre-limited current when the cell voltage ratio reaches a hazard cell voltage ratio, connecting first and second high-voltage batteries to a main bus terminal in parallel when the cell voltage ratio reaches the hazard cell voltage ratio, and outputting a supplementary current from the second high-voltage battery by an insufficient amount of the output current of the fuel cell for the pre-limited current, and a system for performing the same.

Method and system for controlling energy supply in fuel cell vehicle

An apparatus and a method for controlling vehicle start-up modify a sequence order in which control units of the vehicle are started up to improve reliability. In operation, a processor determines whether a voltage of a low-voltage battery is less than a reference voltage when a start key is turned on, and determines a voltage classification level corresponding to the voltage of the low-voltage battery when the voltage of the low-voltage battery is less than or equal to the reference voltage. The processor then determines a sequence order in which to start up driving units of the vehicle including a power conversion device of the vehicle based on the determined voltage classification level, and controls startup of the vehicle by reflecting the determined sequence order of the power conversion device.

Apparatus and method for controlling vehicle startup

A fuel cell control method includes calculating an amount of water in a humidifier using a production amount of water at a cathode of a fuel cell, a discharge amount of saturated vapor and a discharge amount of water at an anode, judging whether or not a vehicle is in a driving state using state information of the vehicle, judging humidity of air in the fuel cell stack upon judging that the vehicle is in the driving state, increasing RPM of an air blower and activating the air blower when the amount of water is greater than a first threshold and a second condition is satisfied, if first conditions are satisfied, and activating a heater when the amount of water is greater than a second threshold, if the first conditions are not satisfied.

Fuel cell control method and apparatus through estimation of amount of water

The present invention provides a piping joint and integrated valve with the piping joint, which improve airtight and watertight, maintain connection firm, and keep constant quality regardless repeated user. In connecting part ( ) of the joint body ( ), the first holes ( ), the second packing holes ( ) where the first packing rings ( ) are inserted, the third holes ( ) with a female threaded part inside conjoining the second packing rings ( ) and bushes ( ), having three holes formed three phases outward on the concentric circle. The first packing rings ( ) are made of silicon or Teflon&reg; that is flexible and sustainable against heat. One side of said second packing rings ( ) contact the first packing rings ( ), and ground the contact parts ( ) stoppers ( ) are placed to prevent the second packing rings ( ) from inserting too deeply into inside of the connecting parts ( ) of the joint body ( ) and the other sides are tapered down in a certain angle to contact the slant ( ) of edges or bushes ( ), and the tapered parts ( ) are equipped with projections ( ) inside to hold pipes (P , P ) firm.

Growing community of inventors

Gyeonggi-do, South Korea

Jae Young Shim