In 2014, UC Battery has designed and built two sets of battery power systems for Green Power Bus of Canada. The power system is based on 0.5 CCA 3.2V 18Ah battery cells. It includes 12 battery chasses. Each chassis provides 48V of electric power. There are 12 BMS boards that monitor and control the 12 battery chasses. A master controller is used for overall control of the power system and for communicate with the motor and the bus-driving control systems. The motor and the driving control systems use the data from the master controller to manage and control the power output and battery charging.
UC Battery has implemented an active balance technology on the bus power system. The BMS collects the data of each individual battery cell’s electric storage status. Based on the status, the BMS direct the charging of individual cell accordingly. This approach assures that every cell in the pack carries the same level of electric power. Therefore, the whole battery pack can perform consistently. The defect on individual cell is being identified for repairment and over-heating problem can be avoided.
These two electric buses have been assembled in Xiamen. They have been in service in Los Angles and Porterville California since 2015.
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