Skip to Content
Find More Like This
Return to Search

Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery

United States Patent

7,489,101
February 10, 2009
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
A battery control system for hybrid vehicle includes a hybrid powertrain battery, a vehicle accessory battery, and a prime mover driven generator adapted to charge the vehicle accessory battery. A detecting arrangement is configured to monitor the vehicle accessory battery's state of charge. A controller is configured to activate the prime mover to drive the generator and recharge the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a first predetermined level, or transfer electrical power from the hybrid powertrain battery to the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a second predetermined level. The invention further includes a method for controlling a hybrid vehicle powertrain system.
Bockelmann; Thomas R. (Battle Creek, MI), Hope; Mark E. (Marshall, MI), Zou; Zhanjiang (Battle Creek, MI), Kang; Xiaosong (Battle Creek, MI)
Eaton Corporation (Cleveland, OH)
10/ 936,370
September 8, 2004
This invention was made with Government support under NREL Subcontract No. ZCL-2-32060-01, Prime Contract DE-AC36-99GO10337 awarded by the Department of Energy. The government has certain rights in this invention.