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:
Dec. 28, 2021
Filed:
Sep. 13, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Kenji Takahashi, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
An ECU calculates, based on a prescribed active material model, a surface stress of an anode active material from the lithium amount inside the anode active material, and calculates, based on the calculated surface stress, an open circuit potential change amount of the anode active material relative to an open circuit potential. The ECU corrects an anode open circuit potential calculated by a deterioration estimation process, using the open circuit potential change amount. The ECU calculates three deterioration parameters so that the measured OCV curve substantially matches the estimated OCV curve specified based on the corrected anode open circuit potential. The open circuit potential is an open circuit potential of the anode active material in the state in which a surface stress is not generated.