Lift truck with hybrid power source

Details Lift truck with hybrid power source Lift truck with hybrid power source

2006-10-19

2010-06-08

Morano, S. Joseph (Department: 3618)

Motor vehicles

Power

Electric

C180S065220, C180S065270, C320S137000

Reexamination Certificate

active

07730981

ABSTRACT:
A lift truck power source includes a hybrid power supply including a storage battery, a capacitor bank, and optionally a fuel cell. The capacitor bank stores power produced during regeneration by either the truck traction system or the lift system and delivers current when current demand exceeds that delivered by the fuel cell. The storage battery or fuel cell acts as a main power supply to deliver current at a rate sufficient to power the lift truck. When the fuel cell is the main power supply, the storage battery stores power during times when current demand is less than that delivered by the fuel cell and delivers current at times when current demand is greater than that delivered by the fuel cell. When the storage battery is the main power supply, the fuel cell supplements the power delivered by the storage battery, and can also recharge the storage battery.

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