Industrial Technology Research Institute

Yin-Wen Tsai

Ku-Yen Kang

Chih-Wei Hsu

Yuh-Fwu Chou

Chiou-Chu Lai

Chun-Ho Tai

Ying-Ying Hsu

Chin-Yi Shih

Chien-Chi Chiu

Shih-Hao Liang

Ching-Jung Liu

Bin-Chen Wei

A power supply system, a fuel cell power generation performance detection device and a control method thereof are provided. The fuel cell has a rated output voltage and an internal resistance having a preset resistance value. The detection device includes a test resistor, a first test switch, a current detection unit and a control unit. The control unit controls the first test switch and the current detection unit to send a first control signal to selectively turn on the first test switch. When the first test switch is turned on, the fuel cell, the test resistor, the first test switch and the current detection unit define a test loop. The current detection unit detects a test current passing through the test loop. The control unit obtains a real-time resistance value of the internal resistance based on the test current to evaluate the power generation performance of the fuel cell.

Power supply system and fuel cell power generation performance detection device and control method thereof

A power supply includes fuel cell, secondary battery, power converter, current detecting unit and control unit. The power converter couples the fuel cell with the secondary battery, and is adapted to convert current outputted by the fuel cell into output current. The current detecting unit couples the power converter with the secondary battery and adapted to detect charging current of the output current transferred to the secondary battery. The control unit couples the current detecting unit with the power converter and is adapted to: when the charging current is greater than a charging current upper-limit-setting value of the secondary battery, a down-adjustment signal is outputted to the power converter to reduce the output current; and when the charging current is less than the charging current upper-limit-setting value, an up-adjustment signal is outputted to the power converter to increase the output current.

Power supply device and power supplying method

The power supply device is configured on an aircraft and includes a secondary battery, a transformer, a fuel cell and a bypass switch. The transformer is electrically connected between the secondary battery and the aircraft. The fuel cell is suitable for providing a first output current to the aircraft. The bypass switch is connected in parallel with the transformer. The transformer has a first output voltage set value. When a first output terminal voltage of the fuel cell is lower than the first output voltage set value and the bypass switch is in a non-conducting state, a second output current of the secondary battery is provided to the aircraft via the transformer. When the first output terminal voltage is lower than the first output voltage set value and the bypass switch is in a conducting state, the second output current is provided to the aircraft via the bypass switch.

Power supply device and method thereof for fuel cell

A control system and a control method of fuel cell stacks are provided. The control system includes a set of fuel cell stacks, a secondary battery, a monitoring device, and a control device. Each fuel cell stack has a power output that can be independently started up or shut down. The secondary battery is connected to power output terminals of the fuel cell stacks via a power transmission path. The monitoring device is configured to monitor an electrical parameter of the power transmission path. The control device receives an electrical parameter signal from the monitoring device, and outputs a control signal to shut down or start up the power output of at least one of the fuel cell stacks if the electrical parameter's value is higher than a predetermined upper limit or lower than a predetermined lower limit.

Control system and method of fuel cell stacks

A fuel cell system is provided, comprising a cell unit capable of gas exhausting. The cell unit comprises an anode current collector and a cathode current collector. A membrane electrode assembly (MEA) is interposed between the anode current collector and the cathode current collector. A frame is formed to surround the MEA, the anode current collector, and the cathode current collector. A hydrophilic gas-blocking layer is disposed adjacent to an anode side of the MEA, underlying the MEA and the frame. A hydrophobic gas-penetrating layer is disposed under the hydrophilic gas-blocking layer. At least one gas exhaust is disposed in the frame, exposing a part of the hydrophilic gas-blocking layer and contacting the area surrounding adjacent to the cell unit for exhausting a gas produced by the MEA from the cell unit.

Fuel cell systems

A flat fuel cell assembly including a membrane electrode assembly, a cathode porous current collector, an anode porous current collector and a gas barrier material layer is provided. The membrane electrode assembly includes a proton conducting membrane, an anode catalyst layer and a cathode catalyst layer disposed respectively on two sides of the proton conducting membrane, and an anode gas diffusion layer and a cathode gas diffusion layer disposed respectively on the anode catalyst layer and the cathode catalyst layer. The cathode porous current collector is disposed on one side of the cathode gas diffusion layer. The anode porous current collector is disposed on one side of the anode gas diffusion layer. The gas barrier material layer having at least an opening exposing the surface of the cathode gas diffusion layer is disposed on the cathode gas diffusion layer.

Flat fuel cell assembly having gas barrier material layer

An embodiment of the invention provides a fuel supply control system to control a fuel cell system to work in a predetermined temperature range by controlling a fuel supply rate. The fuel supply control system includes a fuel supply controller and a fuel supply device. The fuel supply controller calculates a temperature variation slope to generate a first fuel supply rate by increasing or decreasing the predetermined fuel supply rate according to the relationship of system temperature and predetermined working temperature, and controls a fuel delivering rate of the fuel supply device according to the first fuel supply rate.

Growing community of inventors

Nantou County, Taiwan

Yin-Wen Tsai