Predicting Tool for the Battery Cycle Life
Iryna Snihir, William Rey and Evgeny Verbitskiy
In: PRIP 2005, 18-20 May 2005, Minsk, Belarus.
We propose an efficient and reliable method to predict cycle life of a rechargeable battery.
We study the cycle life data obtained under laboratory conditions: battery cells have been submitted to repeated identical charge/discharge cycles. We propose a method for the modelling of the separate cycles and the forecasting the next cycles, when a few previous cycles have been observed.
The success of the method confirms the assumption that a great deal of the information on ageing already is present in the voltage curves of a few first battery cycles.
The method is based on the compact representation of voltage curves via Karhunen-Loeve (KL) coefficients and with help of a regression model.