Title:
リチウムイオン二次電池の製造方法
Document Type and Number:
Japanese Patent JP5464118
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a lithium ion secondary battery prepared with an electrolyte containing a difluorophosphate in which the duration of a cell-voltage rise after left to stand is short in a second self-discharge step.SOLUTION: The method for producing a lithium ion secondary battery satisfies at least one of the following requirements (1) and (2). (1) In a cell array binding step, a cell array 200 is held between pressing fixtures 30 and 40 to be bound so that the pressure exerted on the flat exterior (a first flat exterior 110b and a second flat exterior 110c) of an electrode body 110 is in the range of 650 to 8150 kPa. (2) In a second self-discharge step, an initial voltage of standing being a cell voltage at the time of leaving the cell array 200 to stand, is in the range of 3.4 to 3.8 V.
Inventors:
Hiroaki Ikeda
Hiroyuki Akita
Naoki Wakamatsu
Hiroyuki Akita
Naoki Wakamatsu
Application Number:
JP2010228758A
Publication Date:
April 09, 2014
Filing Date:
October 08, 2010
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M10/058; H01M4/36; H01M4/505; H01M4/525; H01M4/587; H01M10/0525; H01M10/0567
Domestic Patent References:
| JP2007165125A | ||||
| JP2004288515A | ||||
| JP2002352862A | ||||
| JP2010086754A | ||||
| JP2010021104A | ||||
| JP2010009983A |
Foreign References:
| WO2007055087A1 |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office