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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.:

US 10128547 B1

PDFFull Text
Date of Patent:
Nov. 13, 2018

Filed:

Feb. 16, 2012

Method for producing secondary battery

Applicants:

Hisataka Fujimaki, Nisshin, JP;

Hiroshi Kawadu, Toyota, JP;

Shinya Kamada, Toyota, JP;

Hisanao Kojima, Kariya, JP;

Inventors:

Hisataka Fujimaki, Nisshin, JP;

Hiroshi Kawadu, Toyota, JP;

Shinya Kamada, Toyota, JP;

Hisanao Kojima, Kariya, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Barbara L Gilliam

Assistant Examiner:

Adam A Arciero

Int. Cl.
CPC ...
H01M 10/44 (2006.01); H01M 10/058 (2010.01); H01M 10/052 (2010.01); B60L 11/18 (2006.01); H01M 4/04 (2006.01); H01M 10/04 (2006.01); H01M 10/0525 (2010.01); H01M 10/0585 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/587 (2010.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
H01M 10/446 (2013.01); B60L 11/18 (2013.01); H01M 4/0469 (2013.01); H01M 10/049 (2013.01); H01M 10/058 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/587 (2013.01); H01M 10/052 (2013.01); H01M 10/0525 (2013.01); H01M 10/0585 (2013.01); H01M 2220/20 (2013.01); H02J 7/0073 (2013.01); Y02E 60/122 (2013.01); Y02P 70/54 (2015.11); Y10T 29/49108 (2015.01);
Abstract

Provided is a method for producing a lithium secondary battery in which localized precipitation of a foreign metal in the negative electrode can be reliably suppressed in a shorter time, regardless of, for instance, electrode type or electrode variability. The production method is a method for producing a secondary battery that includes a positive electrode provided with a positive electrode active material layer, a negative electrode provided with a negative electrode active material layer, and a nonaqueous electrolyte. The method comprises a step of constructing a cell including the positive electrode, the negative electrode and the nonaqueous electrolyte; a micro-charging step of performing charging over one hour or longer, up to 0.01% to 0.5% of the capacity of the constructed cell, in a state of charge such that a positive electrode potential is equal to or higher than an oxidation potential of iron (Fe), and a negative electrode potential is equal to or higher than a reduction potential of iron (Fe), and maintaining the state of charge; and a step of performing an initial conditioning charging.

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