of Ni/MH Battery Pack for Electric Vehicle

Wang Junping

(School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049)

Chen Quanshi  Lin Chengtao

(State Key Laboratory of Automobile Safety & Energy Conservation, Tsinghua University, Beijing 100084)

Abstract: The FUDS is used to charge and discharge the Ni/MH battery pack and the battery’s state space model with single state is built. Take the SOC as the state of the system the estimating SOC based on Kalman-filtering method is studied. The max relatively error of the estimating results is 2.15%. This method is suit for the HEV where the batteries working in dynamic state or silent state. This method has less computation burden and is suitable for application.

Key words: Ni/MH battery pack  State of charge  Kalman filtering method

CLC No: TM912.1

国家863计划(2003AA501100)和汽车安全与节能国家重点实验室开放基金(KF2005-006)资助项目. Received 20050210, received in revised form 20050715