A Simplified Li-ion Battery SOC Estimating Method
- Resource Type
- Article
- Authors
- Xiaoqiang Zhang; Xiaocheng Wang; Wei-ping Zhang; Geyang Lei
- Source
- Transactions on Electrical and Electronic Materials, 17(1), pp.13-17 Feb, 2016
- Subject
- 전기공학
- Language
- English
- ISSN
- 2092-7592
1229-7607
The ampere-hour integral method and the open circuit voltage method are integrated via the extended Kalman filter method so as to overcome insufficiencies of the ampere-hour integral method and the open circuit voltage method for estimating battery SOC. The process noise covariance and the measurement noise covariance of the extended Kalman filter method are simplified based on the Thevenin equivalent circuit model, with a proposed simplified SOC estimating method. Verification of DST experiments indicated that the battery SOC estimating method is simple and feasible, and the estimated SOC error is no larger than 2%.