A hybrid electrical power system for an electric vehicle, particularly an industrial electric vehicle such as an electric forklift, comprises a fuel cell stack, a DC/DC converter and a Li-ion battery. The DC/DC converter comprises a transformer for converting a voltage of direct current generated by the fuel cell stack to another voltage, and a controller for generating a reference voltage for the another voltage to approach. When the reference voltage is set to be larger than the another voltage, the fuel cell stack provides power to drive the vehicle and charge the Li-ion battery. When the reference voltage is set to be not larger than the voltage of direct current from the Li-ion battery, both the Li-ion battery and the fuel cell stack provide power to drive the vehicle.
HYBRID ELECTRICAL POWER SYSTEM FOR INDUSTRIAL ELECTRIC VEHICLE AND METHOD OF OPERATION THEREOF
2016-09-15
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
HYBRID ELECTRICAL POWER SYSTEM FOR INDUSTRIAL ELECTRIC VEHICLE
European Patent Office | 2016
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