HV BATTERY EQUALIZATION CHARGE DURING DRIVING OPERATION IN FUEL CELL HYBRID VEHICLES

摘要

A fuel cell system that includes a method for providing a battery state of charge and voltage equalization during normal operation of the fuel cell system. If a charge equalization has been requested, the method first determines whether the battery temperature is above a predetermined temperature and, if not, proceeds with battery charging and overcharging so that all of the cells in the battery are fully charged. During the charging process, the method determines whether the charging process should be interrupted, such as by a power request that exceeds a predetermined power request, which would require battery power. The method counts the number of times the state of charge and voltage equalization process has been interrupted, and if the number of times exceeds a predetermined value, then the method initiates a service condition.