Title :
Research and development of model-based battery state of charge indicator
Author :
Torikai, Takayuki ; Takesue, Takaaki ; Toyota, Yukihiro ; Nakano, Kazushi
Author_Institution :
Kyuki Electric Corp., Fukuoka, Japan
Abstract :
A novel approach to developing a battery state of charge indicator for an electric vehicle is discussed. An approach to determining the state of charge by combing the available data of discharge characteristics of a lead-acid battery with an identification technique based on the battery mathematical model is presented. The basis for the approach is to introduce a nonlinear battery mathematical model, and to estimate the battery state of charge by least squares estimation. This approach was realized by a digital signal processor and its validity was confirmed by simulation tests using data measured during urban driving and road tests
Keywords :
computerised instrumentation; digital signal processing chips; electric vehicles; lead; least squares approximations; secondary cells; Pb acid secondary cells; R&D; battery state of charge indicator; computerised instrumentation; development; digital signal processor; discharge characteristics; electric vehicle; identification technique; least squares estimation; mathematical model; research; Battery charge measurement; Current measurement; Digital signal processors; Electric vehicles; Mathematical model; Research and development; State estimation; Table lookup; Testing; Voltage;
Conference_Titel :
Industrial Electronics, Control, Instrumentation, and Automation, 1992. Power Electronics and Motion Control., Proceedings of the 1992 International Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0582-5
DOI :
10.1109/IECON.1992.254476
