Volvo Truck Corporation

Simon Berntsson

Linus Nordholm

A method for power management of an electrically powered vehicle, wherein at least two loads, including a first load and at least one second load, are by default powered by an electric energy storage system of the vehicle according to a first prioritization strategy determining how power is distributed among the at least two loads. The method comprises detecting that a pre-defined operating condition applies, and in response to said detection, activating a second prioritization strategy, wherein, according to the second prioritization strategy, power distribution to the first load is prioritized over power distribution to the at least one second load.

Method of power management and a power system of an electrically powered vehicle

A method for determining a derating factor for a rechargeable energy storage system. The derating factor is indicative of the rate at which an electrical load, imparted on said rechargeable energy storage system, is reduced, said rechargeable energy storage system being associated with at least a first load threshold and at least a second load threshold being located further away from a zero electrical load value than the first load threshold. The method includes determining a safety margin value by combining an accumulated first load value and an accumulated second load value and relating the thus combined values with said operating time range, and comparing said safety margin value to at least one safety margin threshold value in order to determine whether or not said derating factor should be modified.

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Gothenburg, Sweden

Simon Berntsson