CAJ | 학술논문

针对动力电池在低SOC、低温等工作条件下输出功率较小，难以同时满足车辆动力性、安全性和舒适性的功率需求的问题，对动力电池的功率输出特性和电动附件对整车动力性的影响进行了研究。在此基础上，提出了一种综合考虑动力性、安全性和舒适性的纯电动汽车驱动电机和电动附件的能量管理策略。该策略以电池放电功率与驾驶员需求功率的关系为判断条件，将纯电动汽车能耗系统的工作状态分为正常、一级欠功率和二级欠功率3类，并针对能量管理较复杂的一级欠功率工作状态，提出了“特殊工况安全优先，非特殊工况协调控制”的解决方案。仿真结果表明，该能量管理策略在低SOC、低温等工作条件下既优先考虑了整车安全性又兼顾了动力性和舒适性。
침대동력전지재저SOC、저온등공작조건하수출공솔교소，난이동시만족차량동력성、안전성화서괄성적공솔수구적문제，대동력전지적공솔수출특성화전동부건대정차동력성적영향진행료연구。재차기출상，제출료일충종합고필동력성、안전성화서괄성적순전동기차구동전궤화전동부건적능량관리책략。해책략이전지방전공솔여가사원수구공솔적관계위판단조건，장순전동기차능모계통적공작상태분위정상、일급흠공솔화이급흠공솔3류，병침대능량관리교복잡적일급흠공솔공작상태，제출료“특수공황안전우선，비특수공황협조공제”적해결방안。방진결과표명，해능량관리책략재저SOC、저온등공작조건하기우선고필료정차안전성우겸고료동력성화서괄성。
Aiming at the difficulty in concurrently meeting the power requirements of vehicle safety, comfort and power performances due to the low output power of power battery in low SOC / low temperature working condi-tion, the influences of the power output characteristics of power battery and electrical accessories on the power per-formance of vehicles is studied. Based on this, an energy management strategy for the drive motor and electrical ac-cessories is proposed with concurrent consideration of power, safety and comfort performances of battery electric ve-hicle ( BEV) . With the relation between the discharge power of battery and the desired power of driver as judging condition, the strategy divides the working states of the energy consuming system of BEV into three categories ( nor-mal, 1st level power inadequacy and 2nd level power inadequacy) and a solving scheme of“giving priority to safety in special condition while adopting coordinated control in non-special condition” is proposed for the working state of 1st level power inadequacy, a more complicated one in energy management. The results of simulation show that the energy management strategy proposed can not only gives priority to vehicle safety but also balances power and com-fort performances in low SOC / low temperature condition.