Electric vehicle power supply

Details Electric vehicle power supply Electric vehicle power supply

1997-04-21

1999-03-16

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320104, 318139, H02J 700

Patent

active

058834966

ABSTRACT:
To obtain an electric vehicle power supply 10 having a high output power density and regenerative power density, and which is compact and lightweight wherein a first battery 12 whose regenerative power density increases with decrease of the SOC and a second battery 14 whose output power density increases with increase of the SOC are used as an electrical storage device, and control is performed so that the SOC of the first battery 12 is maintained low while the SOC of the second battery 14 is maintained high. The regenerative power density of the first battery 12 is therefore high, the regeneration current from the motor 32 is mainly stored by the first battery 12, and the force used to drive the motor 32 is mainly output by the second battery 14 which has a high output power density.

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A. F. Burke, Proceedings of the 25.sup.th Intersociety Energy Conversion Engineering Conference, vol. 6, pp. 119-135, Aug. 12, 1990, "Electric Vehicle Propulsion and Battery Technology 1975-1995".

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