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1. (WO2016058738) METHOD FOR ESTIMATING THE STATE OF HEALTH OF A BATTERY IN A DEVICE SUPPLYING POWER TO A SYSTEM

Pub. No.:    WO/2016/058738    International Application No.:    PCT/EP2015/069354
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Tue Aug 25 01:59:59 CEST 2015
IPC: G01R 31/36
Applicants: SAGEMCOM ENERGY & TELECOM SAS
Inventors: BESSIENE, Daniel
MOY, Philippe
DURAND, Guillaume
Title: METHOD FOR ESTIMATING THE STATE OF HEALTH OF A BATTERY IN A DEVICE SUPPLYING POWER TO A SYSTEM
Abstract:
The invention relates to a method for estimating the state of health of a battery in a device supplying power to a system, said method comprising the step of voluntarily cutting the power supply to the system from a main power supply source, determining a given power delivered by the battery to the system, and measuring a voltage across the terminals of the battery, restoring the power supply to the system, determining a theoretical total battery discharge time, determining a partial battery discharge curve, and extrapolating said curve in order to deduce a total battery discharge curve and estimating a real total battery discharge time, deducing the state of health of the battery from same.