Title:
非水電解質二次電池の自己放電検査方法
Document Type and Number:
Japanese Patent JP6374193
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for self-discharge inspection of nonaqueous electrolyte secondary batteries, which enables the reduction in storage cost.SOLUTION: A method for self-discharge inspection of nonaqueous electrolyte secondary batteries comprises: a first selection step where a nonaqueous electrolyte secondary battery having few chances of being determined to be a non-defective article because of a large voltage variation ΔV1-ΔV4 since the charging of the battery is selected as a precedent defective article from a nonaqueous electrolyte secondary battery group at a point of time before an open-circuit voltage OCV, which varies immediately after the charging, is stabilized and thus, a reliable selection of a defective article is enabled; and a second selection step subsequent to the first one where a nonaqueous electrolyte secondary battery showing a larger voltage variation ΔV1-ΔV4 than a normal threshold since the charging is selected as a defective article from the nonaqueous electrolyte secondary battery group excluding the precedent defective article at a point of time when the open-circuit voltage OCV, which varies immediately after the charging, is stabilized and thus, a reliable selection of a defective article is enabled.
Inventors:
Daisuke Iga
Atsuko Kurihara
Kenichi Sakai
Atsuko Kurihara
Kenichi Sakai
Application Number:
JP2014062970A
Publication Date:
August 15, 2018
Filing Date:
March 26, 2014
Export Citation:
Assignee:
Automotive Energy Supply Corporation
International Classes:
H01M10/04; H01M10/48
Domestic Patent References:
| JP201284346A | ||||
| JP201426732A |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tsuyoshi Hashimoto
Tomioka Kiyoshi
Tsuyoshi Hashimoto