A METHOD AND SYSTEM FOR ESTIMATING THE STATE-OF-HEALTH OF A BATTERY

A method and system for estimating the state-of-health of a battery The invention relates to a method for estimating the state-of-health, SoH, of a battery in a vehicle, the method comprising: determining () a first battery property and a battery temperature of a battery in a vehicle; calculating () a state-of-health, SoHof a battery cell based on the determined first battery property using a predetermined model; providing () a function f estimating a battery cell degradation rate; updating () a state-of health estimated in a previous time step according to SoH←SoH+ƒ·dt+K·(SoH−SoH), where K is a gain factor which is dependent on operating conditions of the vehicle, and wherein K is modified () for each time step using a reinforcement learning agent.