Title:
METHOD AND SYSTEM FOR PREDICTING STATE OF CHARGE OF BATTERY
Document Type and Number:
WIPO Patent Application WO/2019/114240
Kind Code:
A1
Abstract:
A method and a system for predicting the state of charge of a battery. The method comprises: acquiring a voltage and a current of a battery during a charging-discharging process (10); using a genetic algorithm to optimize a model parameter of a second-order RC equivalent circuit model of the battery according to the voltage and the current of the battery during the charging-discharging process, and obtaining an optimized model parameter (11); acquiring a cubic spline fitting function of the state of charge of the battery, and using an extended Kalman filter algorithm to establish a state-of-charge prediction model of the battery according to the optimized model parameter and the cubic spline fitting function (12); and predicting the state of charge of the battery according to the state-of-charge prediction model (13). The method and the system for predicting the state of charge of a battery improve accuracy of prediction of the state of charge of a battery.
More Like This:
Inventors:
ZHUO YANHAN (CN)
ZHAO ANG (CN)
WU HAIMING (CN)
LIU SONGLI (CN)
ZHAO ANG (CN)
WU HAIMING (CN)
LIU SONGLI (CN)
Application Number:
PCT/CN2018/092489
Publication Date:
June 20, 2019
Filing Date:
June 22, 2018
Export Citation:
Assignee:
BEIJING CHUANGYU TECH CO LTD (CN)
International Classes:
G01R31/36
Foreign References:
| CN105301509A | 2016-02-03 | |||
| CN102016617A | 2011-04-13 | |||
| CN104237791A | 2014-12-24 | |||
| CN103293485A | 2013-09-11 | |||
| CN206161820U | 2017-05-10 | |||
| US20100274510A1 | 2010-10-28 |
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
Download PDF: