公开(公告)号：US09895991B2

公开(公告)日：2018-02-20

申请号：US14878053

申请日：2015-10-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jinho Kim ,  Tae-Won Song ,  Ju-Wan Lim

IPC: H02J7/00 ,  H02J7/04 ,  G01R31/36 ,  B60L11/18

CPC classification number: B60L11/1861 ,  G01R31/3679 ,  H02J7/0021 ,  H02J7/0047 ,  H02J7/007 ,  H02J2007/005 ,  Y02T10/7055

Abstract: A method and apparatus estimating a state of a battery are provided. A battery life estimation apparatus may charge a battery using a normal charge rate (C-rate) during a charging interval of a charging cycle and a low charge rate (C-rate) in a low-rate charging interval of the charging cycle, may compare a determined change in an electrical physical quantity of the battery over time to a reference curve, corresponding to a life of the battery, for an initial state of the battery, in the low-rate charging interval, and may estimate the life of the battery based on a result of the comparing.