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1. WO2020200897 - METHOD FOR INITIALISING THE CHARGE STATE OF A BATTERY

Publication Number WO/2020/200897
Publication Date 08.10.2020
International Application No. PCT/EP2020/058058
International Filing Date 24.03.2020
IPC
G01R 31/36 2020.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
G01R 31/3835 2019.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
382Arrangements for monitoring battery or accumulator variables, e.g. SoC
3835involving only voltage measurements
CPC
G01R 31/3648
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
3644Constructional arrangements
3648comprising digital calculation means, e.g. for performing an algorithm
G01R 31/3835
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
382Arrangements for monitoring battery or accumulator variables, e.g. SoC
3835involving only voltage measurements
Applicants
  • RENAULT S.A.S [FR]/[FR]
  • NISSAN MOTOR CO., LTD. [JP]/[JP]
Inventors
  • ANA-LUCIA, Driemeyer Franco
  • EDDAHECH, Akram
Agents
  • ROUGEMONT, Bernard
Priority Data
190354703.04.2019FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR INITIALISING THE CHARGE STATE OF A BATTERY
(FR) PROCÉDÉ D'INITIALISATION DE L'ÉTAT DE CHARGE D'UNE BATTERIE
Abstract
(EN)
A method for estimating the charge state of a battery (2) comprising a phase of initialising the charge state, including estimating an initial charge state value and comprising steps of: receiving a stored charge state value for a sleep mode time of the battery, computing a charge state value from a measurement of the no-load voltage at the terminals of the battery at a wake-up time of the battery, said initialisation phase comprising a step of computing an error in the measurement of the no-load voltage due to the relaxation of the battery, said error being computed as a function of the current temperature of the battery and of a target relaxation duration modelled for each temperature, the initial value of said charge state being computed on the basis of a comparison between said recorded and computed charge state values and as a function of said error.
(FR)
Procédé d'estimation de l'état de charge d'une batterie (2) comprenant une phase d'initialisation de l'état de charge incluant d'estimer une valeur initiale d'état de charge et comprenant des étapes de : réception d'une valeur mémorisée d'état de charge à un instant d'endormissement de la batterie, calcul d'une valeur d'état de charge à partir d'une mesure de la tension à vide aux bornes de la batterie à un instant de réveil de la batterie, ladite phase d'initialisation comprenant une étape de calcul d'une erreur sur la mesure de la tension à vide due à la relaxation de la batterie, ladite erreur étant calculée en fonction de la température courante de la batterie et d'une durée de relaxation cible modélisée pour chaque température, la valeur initiale dudit état de charge étant calculée sur la base d'une comparaison entre lesdites valeurs mémorisée et calculées d'état de charge et en fonction de ladite erreur.
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