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. 30, 2025
Filed:
Oct. 19, 2022
Toyota Systems Corporation, Nagoya, JP;
Atsushi Takagi, Toyota, JP;
TOYOTA SYSTEMS CORPORATION, Nagoya, JP;
Abstract
A battery degradation determination system includes a battery degradation determination apparatus configured to perform degradation determination for a secondary battery. The battery degradation determination apparatus includes a processor. The processor is configured to measure a charging and discharging characteristic value of the secondary battery; to calculate a first equivalent circuit constant in an equivalent circuit in which a power supply is a main tank circuit including a first resistive element and a first capacitive element that are connected in parallel, based on the measured charging and discharging characteristic value; and to perform the degradation determination for the secondary battery, based on at least the first equivalent circuit constant that is calculated.