US 12,436,195 B2
Power supply system and fuel cell power generation performance detection device and control method thereof
Yuh-Fwu Chou, Zhubei (TW); Ching-Jung Liu, Zhudong Township (TW); Yin-Wen Tsai, Zhubei (TW); Ku-Yen Kang, Zhubei (TW); and Chih-Wei Hsu, Zhudong Township (TW)
Assigned to INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed by INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu (TW)
Filed on Nov. 1, 2023, as Appl. No. 18/386,096.
Claims priority of provisional application 63/421,605, filed on Nov. 2, 2022.
Prior Publication US 2024/0241179 A1, Jul. 18, 2024
Int. Cl. G01R 31/36 (2020.01); G01R 31/3842 (2019.01); G01R 31/389 (2019.01); H01M 8/04537 (2016.01)
CPC G01R 31/3644 (2013.01) [G01R 31/3842 (2019.01); G01R 31/389 (2019.01); H01M 8/04544 (2013.01); H01M 8/04574 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fuel cell power generation performance detection device, suitable for detecting a power generation performance of a fuel cell, the fuel cell having a rated output voltage and an internal resistance, and the internal resistance having a preset resistance value, the fuel cell power generation performance detection device comprising:
a test resistor;
a first test switch;
a current detection unit; and
a control unit for controlling 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, and the control unit obtains a real-time resistance value of the internal resistance of the fuel cell based on the test current to evaluate the power generation performance of the fuel cell;
wherein an output voltage of the fuel cell is lower than ½ of the rated output voltage and/or a resistance of the test resistor is lower than the preset resistance value of the internal resistance.