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:
Nov. 20, 2018
Filed:
Aug. 29, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Toshihiko Mitsuhashi, Nagoya, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi, JP;
Abstract
Provided is a method by which the sorting as to whether a spent nonaqueous electrolyte secondary battery with the degraded input/output characteristics can be reused can be realized more accurately by taking into consideration the degradation of the input/output characteristics which is caused by the salt concentration unevenness and liquid shortage in the electrode body. The method for sorting a reusable nonaqueous electrolyte secondary battery, which is disclosed herein, includes: a preparation step of preparing a spent nonaqueous electrolyte secondary battery having a positive electrode and a negative electrode; a high-temperature storage step of storing the prepared nonaqueous electrolyte secondary battery for a predetermined time under a high-temperature condition; and a determination step of determining, on the basis of an internal resistance measured after the high-temperature storage step, whether or not the nonaqueous electrolyte secondary battery which has been stored at a high temperature can be reused.