METHOD FOR MONITORING A LI-ION BATTERY AND MONITORING DEVICE FOR IMPLEMENTATION OF SAME

摘要

Method for determining the state of health of a battery, using a sensor of the acoustic activity of the battery, comprising the following steps: detection of at least one acoustic event by the sensor; determination of the value of at least one parameter for each acoustic signal detected in the course of the elementary cycle of use; calculation, for the elementary cycle of use, of a value of acoustic density according to a density calculation function taking into account said at least one parameter determined for each of the acoustic signals detected in the course of the cycle; calculation of a state of health value corresponding to said previously calculated acoustic density value, on the basis of a functional relation or a predetermined database, making it possible to know the state of health for a given acoustic density value.