Title:
バッテリー管理装置、バッテリー管理方法及びバッテリーパック
Document Type and Number:
Japanese Patent JP7172013
Kind Code:
B2
Abstract:
There are provided a battery management apparatus, a battery management method and a battery pack. The battery management apparatus includes a sensing unit configured to detect a current, a voltage and a temperature of a battery, and a control unit. The control unit determines a first candidate value for a state of charge (SOC) of the battery using ampere counting. The control unit determines a Kalman gain and a second candidate value for the SOC using an extended Kalman filter. The control unit determines the first candidate value as the SOC when a difference value between the first candidate value and the second candidate value is larger than a threshold value. The control unit adjusts a ratio of second process noise to first process noise in the extended Kalman filter based on a first component and a second component of the Kalman gain.
Inventors:
Rim, Bomi
Application Number:
JP2021500845A
Publication Date:
November 16, 2022
Filing Date:
January 31, 2020
Export Citation:
Assignee:
LG Energy Solution Limited
International Classes:
G01R31/387; G01R31/367; G01R31/3828; H01M10/48; H02J7/00
Domestic Patent References:
| JP2008010420A | ||||
| JP2016540962A | ||||
| JP2016513238A |
Foreign References:
| WO2016129248A1 | ||||
| US20170199247 | ||||
| KR101908412B1 |
Attorney, Agent or Firm:
Patent Attorney Corporation RYUKA International Patent Office