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:
Oct. 23, 2018
Filed:
Jul. 24, 2013
Automotive Energy Supply Corporation, Zama-shi, Kanagawa, JP;
Junko Kurihara, Zama, JP;
Kenichi Sakai, Zama, JP;
Daisuke Iga, Zama, JP;
Chika Amemiya, Zama, JP;
Hiroaki Tanizaki, Zama, JP;
AUTOMOTIVE ENERGY SUPPLY CORPORATION, Zama-Shi, Kanagawa, JP;
Abstract
A test method for a secondary battery, which early detects the occurrence of the future micro short-circuiting in the screening and promotes to render the contaminant harmless while suppressing the short-circuiting between the positive and negative electrodes in the aging, is provided. This test method includes Step Sof charging the secondary battery, Steps Sand Sof aging the secondary battery in a first pressed state, Step Sof measuring a battery voltage (V) after the aging, Step Sof screening the secondary battery in a second pressed state with a higher pressure than in the first pressed state, and Step Sof measuring a battery voltage (V) after the screening. Whether the battery has the internal short-circuiting or not is determined (Step S) based on the difference between the voltage (V) measured in Step Sand the voltage (V) measured in Step S