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1. (WO2018099560) A SYSTEM AND A METHOD FOR SELECTING ENERGY STORAGE CELLS FOR BALANCING OF AN ELECTRICAL ENERGY STORAGE PACK

Pub. No.:    WO/2018/099560    International Application No.:    PCT/EP2016/079404
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Fri Dec 02 00:59:59 CET 2016
IPC: B60L 11/18
B60L 3/00
Applicants: VOLVO TRUCK CORPORATION
Inventors: HELLGREN, Jonas
Title: A SYSTEM AND A METHOD FOR SELECTING ENERGY STORAGE CELLS FOR BALANCING OF AN ELECTRICAL ENERGY STORAGE PACK
Abstract:
The invention relates to a method for selecting candidate energy storage cells for balancing of an electrical energy storage pack (1) comprising a plurality of energy storage cells (3). The method comprises calculating (S212) a probability that a balancing action on the selected group of cells results in that at least one of the future state of charge is lower than a lower threshold present state of charge or higher than a higher threshold present state of charge, the probability being indicative of superfluous leakage or overcharging. The probability is based on the future state of charge for each of the cells and on the statistical inaccuracy. If the probability is indicative of that superfluous leakage or overcharging is unlikely to occur, selecting (S214, S214') the group of cells as candidates for a balancing action. The invention further relates to a corresponding system and to a vehicle.