EP 3052953 A1 20160810 - METHOD AND APPARATUS FOR EVALUATING THE STATE OF HEALTH OF A LITHIUM BATTERY
Title (en)
METHOD AND APPARATUS FOR EVALUATING THE STATE OF HEALTH OF A LITHIUM BATTERY
Title (de)
VERFAHREN UND VORRICHTUNG ZUR BEURTEILUNG DES GESUNDHEITSZUSTANDES EINER LITHIUMBATTERIE
Title (fr)
PROCEDE ET APPAREIL D'EVALUATION DE L'ETAT DE SANTE D'UNE BATTERIE LITHIUM
Publication
Application
Priority
- FR 1359508 A 20131001
- EP 2014071065 W 20141001
Abstract (en)
[origin: WO2015049300A1] Method for evaluation of the state of health of a lithium battery comprising: • a) a first step of recharging said battery at constant current, until the voltage (U) at its terminals reaches a limit value (Ucv); then • b) a second step of recharging said battery at constant voltage equal to said limit value, until the charging current (I) drops below a threshold value (I min), a plurality of charging current measurements being acquired during said second recharging step; and • c) a step of estimating the state of health of said battery using at least one characteristic parameter of said second step of recharging at constant voltage, such as the parameter describing the decrease of an exponential function interpolating the charging current measurements, the energy supplied to said battery during said second step of recharging at constant voltage or the duration of said charging step at constant voltage. The invention also relates to an apparatus for implementing such a method and a battery management system comprising such an apparatus.
IPC 8 full level
G01R 31/36 (2006.01); B60L 11/18 (2006.01); H02J 7/00 (2006.01)
CPC (source: EP US)
B60L 58/16 (2019.01 - EP US); G01R 31/367 (2018.12 - EP US); G01R 31/378 (2018.12 - EP US); G01R 31/392 (2018.12 - EP US); H02J 7/00 (2013.01 - US); H02J 7/005 (2020.01 - EP US); G01R 31/3842 (2018.12 - EP US); H02J 7/0069 (2020.01 - EP US); Y02T 10/70 (2013.01 - EP US)
Citation (search report)
See references of WO 2015049300A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3011393 A1 20150403; FR 3011393 B1 20170210; EP 3052953 A1 20160810; JP 2016539320 A 20161215; JP 6502331 B2 20190417; US 10036781 B2 20180731; US 2016245876 A1 20160825; WO 2015049300 A1 20150409
DOCDB simple family (application)
FR 1359508 A 20131001; EP 14780469 A 20141001; EP 2014071065 W 20141001; JP 2016520041 A 20141001; US 201415026241 A 20141001