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:
Sep. 08, 2020
Filed:
Aug. 07, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Takeshi Goto, Kasugai, JP;
Kiwamu Kobayashi, Anjo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A circuit is formed by connecting an external power source to a charged electrical storage device so that a polarity of a voltage of the external power source is reverse to a polarity of a voltage of the charged electrical storage device, and the voltage of the external power source is adjusted so that a current does not flow right after the connection. Then, current measurement to acquire a current value after convergence of the current flowing through the circuit due to a voltage drop of the electrical storage device and quality determination based on the current value after convergence are performed. In the current measurement, resistance measurement to actually measure a circuit resistance and prediction to predict a convergence timing of the current based on the actually measured circuit resistance are performed. The current value is acquired when a predicted convergence timing comes.