Publication Date:
2019-07-13
Description:
The performance of two types of batteries, lead-acid and nickel-zinc, was measured as a function of the charging and discharging demands anticipated from electric vehicle propulsion systems. The benefits of rapid high current charging were mixed: although it allowed quick charges, the energy efficiency was reduced. For low power (overnight) charging the current wave shapes delivered by the charger to the battery tended to have no effect on the battery cycle life. The use of chopper speed controllers with series traction motors resulted in a significant reduction in the energy available from a battery whenever the motor operates at part load. The demand placed on a battery by an electric vehicle propulsion system containing electrical regenerative braking confirmed significant improvment in short term performance of the battery.
Keywords:
ENERGY PRODUCTION AND CONVERSION
Type:
NASA-TM-81515
,
DOE/NASA/1044-7
,
E-459
,
Intern. Elec. Vehicle Exposition and Conf.; May 20, 1980 - May 22, 1980; St. Louis
Format:
application/pdf
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