EP 3991233 A1 20220504 - METHOD FOR OPTIMIZING THE SERVICE LIFE OF A BATTERY
Title (en)
METHOD FOR OPTIMIZING THE SERVICE LIFE OF A BATTERY
Title (de)
VERFAHREN ZUR OPTIMIERUNG DER LEBENSDAUER EINER BATTERIE
Title (fr)
PROCÉDÉ POUR OPTIMISER LA DURÉE DE VIE D'UNE BATTERIE
Publication
Application
Priority
- FR 1906993 A 20190627
- EP 2020067268 W 20200622
Abstract (en)
[origin: WO2020260173A1] The invention relates to a method for optimizing the service life of a battery and to a device and a vehicle having means for implementing such a method. The method for managing the state of charge of a battery according to the invention comprises a step of determining a target state of charge as a function of the temperature of the battery, said target state of charge tending, in accordance with a reference degradation profile, to decrease when the temperature increases so as to control the degradation of the battery, and a step of charging the battery until the target state of charge is reached. Advantageously, since the reference degradation profile describes the relative increase in the internal resistance of the battery as a function of the time that has elapsed since the start of life of the battery at a reference state of charge and at a reference temperature, the target state of charge is effectively determined iteratively such that, at the end of a step of estimating the relative increase in the internal resistance, the estimated relative increase tends to remain lower than the relative increase extracted from the reference degradation profile. The device according to the invention is particularly suitable for the lithium batteries of combustion motor vehicles.
IPC 8 full level
H01M 10/44 (2006.01); H02J 7/00 (2006.01)
CPC (source: CN EP KR)
H01M 10/443 (2013.01 - CN EP KR); H02J 7/005 (2020.01 - CN EP KR); H02J 7/007192 (2020.01 - EP KR); H02J 7/007194 (2020.01 - CN); H01M 2220/20 (2013.01 - EP KR); Y02E 60/10 (2013.01 - EP)
Citation (search report)
See references of WO 2020260173A1
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 3098021 A1 20210101; FR 3098021 B1 20211015; CN 114041253 A 20220211; EP 3991233 A1 20220504; JP 2022538220 A 20220901; KR 20220024939 A 20220303; WO 2020260173 A1 20201230
DOCDB simple family (application)
FR 1906993 A 20190627; CN 202080045442 A 20200622; EP 2020067268 W 20200622; EP 20733805 A 20200622; JP 2021574250 A 20200622; KR 20227002514 A 20200622