Title:
リチウムイオン電池の製造方法
Document Type and Number:
Japanese Patent JP7192755
Kind Code:
B2
Abstract:
A negative electrode active material includes graphite and silicon oxide. On a rectangular coordinate system having an SOC of the battery on a horizontal axis and a dimension of the battery on a vertical axis, a charging profile of the battery includes a first stage and a second stage. When the battery is charged at a current rate equal to or higher than an inherent current rate, a first slope is less steep than a second slope. When the battery is charged at a current rate lower than the inherent current rate, the first slope is steeper than the second slope. During the initial charging, at least charging in the first stage is performed at a current rate lower than the inherent current rate. After the initial charging proceeds to the second stage, the thermal aging is performed at an SOC included in the second stage.
Inventors:
Hiroki Iguchi
Application Number:
JP2019223651A
Publication Date:
December 20, 2022
Filing Date:
December 11, 2019
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M10/058; H01M4/48; H01M4/587; H01M10/052
Domestic Patent References:
| JP2018190582A | ||||
| JP2019197698A |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office