公开(公告)号：US20240210486A1

公开(公告)日：2024-06-27

申请号：US18288089

申请日：2021-04-29

Applicant: SAFT

Inventor： Sébastien LAURENT ,  Mouna DAHMANI ,  Sébastien BENJAMIN

IPC: G01R31/392 ,  G01R31/367 ,  G01R31/374 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/396 ,  H02J7/00

CPC classification number: G01R31/392 ,  G01R31/367 ,  G01R31/374 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/396 ,  H02J7/0047

Abstract: The invention relates to a method for predicting the remaining life of an electrochemical cell having a SOC-OCV characteristic with a planar portion extending between two limits, said method comprising the steps of obtaining voltage and current measurements from the electrochemical cell during a discharge, detecting a limit; calculating the values at the voltage limit detected and the amount of charge lost; predicting the resistance and capacitance of the electrochemical cell by applying respective predictive functions obtained by a learning technique to the voltage and the amount of charge lost at the limit detected; and predicting the remaining life of the electrochemical cell from the predicted resistance and predicted capacitance.

公开(公告)号：US20240201270A1

公开(公告)日：2024-06-20

申请号：US17909864

申请日：2021-03-11

Applicant: SAFT

Inventor： Sébastien LAURENT ,  Sébastien BENJAMIN ,  Isabelle SOURMEY ,  Romain CAYZAC ,  Willy PRODHOMME ,  Nicolas PAQUIN

IPC: G01R31/387 ,  G01R31/367 ,  G01R31/374 ,  G01R31/378

CPC classification number: G01R31/387 ,  G01R31/367 ,  G01R31/374 ,  G01R31/38

Abstract: The present invention relates to a method for determining the lifetime of an electrochemical element of a battery in real time as a function of a determined application, applicable in the field of primary type batteries. The method comprises: —a step (1) of measuring at least one intensity value (I) of the current provided by the electrochemical element and of measuring at least one temperature value (T) of the electrochemical element in the determined application; —a step (4) of computing total lifetime allowing the availability time of the electrochemical element to be computed on the basis of a determined initial time, as a function of the one or more current intensity value(s) (I) and of the one or more temperature values (T) measured during the measuring step (1), as a function of a determined value of the capacity of the electrochemical element, of the cut-off voltage of the determined application, and of the background current of the determined application.