METHOD OF ENERGY MANAGEMENT IN A MOTOR VEHICLE
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Abstract
A method of energy management in a motor vehicle including an electric traction system supplied by at least one battery, and an electrical energy source which is auxiliary to the battery and which is able to supplement power provided by the battery to supply the electric traction system, the auxiliary source being associated with a fuel reservoir. The method controls a power level provided by the auxiliary electrical energy source when it is activated, selected exclusively from a first low power level and a second high power level, according to a sign of a difference calculated between variation of a reservoir filling state and variation of a battery charge state, the first and second power levels making it possible to limit energy losses associated with conversion of the fuel into electrical energy by the auxiliary electrical energy source.
15 Citations
18 Claims
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1-9. -9. (canceled)
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10. A method of energy management in a motor vehicle including an electric traction system powered by at least one battery and an electric energy source supplementing the battery, configured to complement electric power supplied by the battery to power the electric traction system and which has an associated fuel tank feeding the electric energy source, the method comprising:
determining activation or non-activation of the supplementary electric energy source and, in a case of activation, controlling the supplementary electric energy source to supply an electric power level chosen exclusively from a first low power level and a second high power level, according to a sign of a difference calculated between a variation of a tank fullness state and a variation of a battery charge state, the first and second power levels being defined to limit energy losses associated with conversion of the fuel into electric energy by the supplementary electric energy source. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
Specification