The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 10, 2023
Filed:
Jan. 11, 2021
Psa Automobiles SA, Poissy, FR;
Institut Polytechnique DE Grenoble, Grenoble, FR;
Saft, Levallois Perret, FR;
Gentien Thorner, Paris, FR;
Francis Roy, Les Ulis, FR;
Jean Bernard Douet, Bazainville, FR;
Thomas Peuchant, Le Bouscat, FR;
David Herpe, Tresses, FR;
Pierre Xavier Thivel, Grenoble, FR;
Jean Claude Leprêtre, Voreppe, FR;
PSA AUTOMOBILES SA, Poissy, FR;
INSTITUT POLYTECHNIQUE DE GRENOBLE, Grenoble, FR;
SAFT, Levallois, FR;
Abstract
The present invention relates to a method for charging an electrochemical cell of a rechargeable battery with charging pulse control (PL), the pulses (PL) being driven in voltage control mode in the form of voltage steps (Pt) of variable amplitude. According to the invention, the method consists in calculating the value (Ut+1) of each voltage step (Pt+1) with respect to the value (Ut) of the preceding voltage step (Pt) and according to a progression variable representative of the variation in the internal resistance of the cell (d(R)/dt), for a period ending on the preceding step (Pt), with respect to a predetermined tolerated variation threshold (α), where Var=d(R)/dt−α. The method applies to high-voltage electric battery charging protocols for electromobility or stationary applications, or portable device batteries, for example.