Patent ID: 11901521
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  G  Y | IPC B  G  H

Claim 5:
6. A charging method in a secondary battery having a continuous charging state including at least first to third sections, the first section being followed by the second section, and the second section being followed by the third section,
the charging method comprising:
measuring a volume change rate of the secondary battery; and
controlling a current flowing through the secondary battery based on the volume change rate of the secondary battery, wherein the controlling the current comprising:
controlling a current flowing through the secondary battery so as to be smaller than a predetermined current in the first and third sections; and
controlling the current flowing through the secondary battery so as to be larger than the predetermined current in the second section,

wherein the first section has a first volume change rate, the second section has a second volume change rate, and the third section has a third volume change rate, each one of the first to third volume change rates represents a relationship between a volume of the secondary battery and a charge amount of the secondary battery in a case where the predetermined current flows through the secondary battery, and
the second volume change rate is different from the first volume change rate and the third volume change rate.