Abstract:
PURPOSE: A traction control apparatus and a method thereof of an eco-friendly vehicle are provided to operate active traction control through determining the application of traction control through applying the current variation rate of a motor. CONSTITUTION: A traction control apparatus comprises a transmission range detection unit(101), a required torque detection unit(102), a voltage detection unit(103), and a vehicle controller(104). The transmission range detection unit supplies the position information of a transmission selected through a shift lever to the vehicle controller. The vehicle controller calculates the power consumption and current consumption according to the driving of a motor by using detected motor speed, required torque, and input voltage. The traction control is operated through being connected to a traction controller(200) connected through network in case of the operation condition of traction control is satisfied.
Abstract:
PURPOSE: A control method of fuel cell hybrid system is provided to improve durability of the fuel cell system by using OCV domain avoidance operation. CONSTITUTION: A control method of fuel cell hybrid system comprises the following steps: driving vehicles in a normal driving mode of the fuel system; stop providing air to the fuel battery in order to stop power generation of the fuel battery and lowering fuel battery voltage if idle stop condition is satisfied; maintaining voltage of a bidirectional power conversion device by lowering the voltage to a set value; forcedly charging output power of the fuel cell with high voltage battery due to maintenance of voltage; and lowering voltage of the fuel cell battery less than voltage of the power conversion device. An EV mode driving is executed which runs a drive motor only with high voltage battery output.
Abstract:
PURPOSE: An emergency driving method at malfunction of hydrogen purge valve is provided to secure the safety of vehicle in case hydrogen purge valve is broken down, because of securing hydrogen purging function even in emergency, and to facilitate the exhaustion of impurities and hydrogen. CONSTITUTION: An emergency driving method at malfunction of hydrogen purge valve comprises: a step of detecting the malfunction of a hydrogen purge valve; a step of converting to emergency operation mode In case the malfunction of the hydrogen purge valve is detected; and a step of switch-cotnrol water trap water discharge valve according to operation condition of hydrogen purge valve. At the emergency operation mode, hydrogen is discharged according to the opening of the water trap water discharge valve.
Abstract:
PURPOSE: An emergency driving method for fuel cell vehicle is provided to enhance control logic without system change or hardware addition, thereby configuring additional emergency driving modes. CONSTITUTION: A vehicle controller and air supply controller checks communication state with each other. When the air supply controller checks a communication disconnection state for a fixed time, the air supply controller controls a driving operation of an air supply device for supplying air to a fuel cell stack with a self-determined air flux. The vehicle controller determines an abnormal state of a fixed air flux by receiving an input of air flux detection value supplied to the fuel cell stack from an air flux sensor. The vehicle controller drives the vehicle in an emergency driving mode by operating an operating motor with a fuel cell stack output.
Abstract:
PURPOSE: An apparatus and a method for predicting the coolant temperature of fuel cell system are provided to secure the controlling stability of the apparatus and to effectively prevent the overheat and the damage of a fuel cell stack. CONSTITUTION: A first temperature sensor detects the temperature of coolant at one side of the inlet or the outlet of a fuel cell stack(10). A flow meter(15) measures the flux of the coolant during the operation of a fuel cell. A controller(1) measures the heating value of the fuel cell stack. The controller predicts the temperature of coolant at another side of the inlet and the outlet of the fuel cell based on the flux of the coolant, the heating value of the fuel cell stack, and the detected temperature of the coolant.
Abstract:
PURPOSE: Apparatus and method for removing water within a fuel cell are provided to improve cold starting of a fuel cell by rapidly removing water present in the cell of a fuel cell stack without the addition and use of a bypass line or suction pump. CONSTITUTION: An apparatus for removing water within a fuel cell comprises: a current application device which is connected to a cathode and an anode of a fuel cell stack and applies current for electrolysis of water between the cathode and the anode; a cell voltage detection part for detecting the cell voltage of the fuel cell stack; and a controller for controlling the current output of the current application device so that a set reference voltage is not the set reference voltage or more.
Abstract:
PURPOSE: A method for detecting the ice blocking of a fuel cell stack is provided to detect the ice blocking on the surface of an electrode in a real time by analyzing a minimum cell voltage of the fuel cell stack and to distinguish the ice blocking of a cathode and the ice blocking of an anode. CONSTITUTION: A method for detecting the ice blocking of a fuel cell stack comprises the steps of: (i) periodically calculating a minimum cell voltage of a fuel cell stack from a cell voltage measured value of a cell voltage monitoring device in the state where a reaction gas is supplied to the fuel cell stack; (ii) calculating the variation of the minimum cell voltage using the present value of the calculated minimum cell voltage and the previous value of the minimum cell voltage; (iii) determining whether the variation of the minimum cell voltage is a set standard value or greater; and (iv) if the variation of the minimum cell voltage is a set standard value or greater, determining that the ice blocking is generated in an anode of a fuel cell stack.
Abstract:
본 발명은 연료전지 수퍼캡 직결형 하이브리드 차량의 동력분배장치 및 방법에 관한 것으로서, 더욱 상세하게는 연료전지와 수퍼캡이 직결되는 하이브리드 차량의 가속시 수퍼캡의 초기 방전을 방지하는 동시에 고속/고출력 구간에서 수퍼캡이 출력 파워를 어시스트할 수 있도록 한 연료전지 수퍼캡 하이브리드 차량의 동력분배장치 및 방법에 관한 것이다. 이를 위해, 본 발명은 연료전지 수퍼캡 직결형 하이브리드 차량의 동력분배장치에 있어서, 상기 연료전지와 수퍼캡간의 충방전 라인상에 장착되는 릴레이와; 상기 수퍼캡의 출력단과 상기 연료전지 버스단간에 설치되어 파워 어시스트가 필요할 때만 수퍼캡 에너지를 연료전지 버스단으로 출력하는 단방향 강압 컨버터와; 상기 릴레이 및 단방향 강압 컨버터의 동작을 제어하는 제어수단; 을 포함하여 구성된 것을 특징으로 하는 연료전지 수퍼캡 직결형 하이브리드 차량의 동력분배장치 및 방법을 제공한다. 연료전지, 수퍼캡, 릴레이, 직결, 하이브리드, 단방향 강압 컨버터, 파워 어시스트, 동력 분배