增程式混动汽车冷却系统控制策略
封金凤1，陈晓飞2，刘长振2，白书战1*
1.山东大学能源与动力工程学院，山东 济南 250061；2.中国北方发动机研究所，天津 300400
摘要：为降低增程式电动汽车冷却系统的总功耗，分析水泵和风扇功率分配对冷却效果的影响，在保证冷却效果的前提下，计算不同散热量和风速下功耗最低的水泵与风扇的转速组合；在Simulink中搭建冷却系统的控制模型，优化设计冷却系统控制策略并进行仿真试验。仿真结果表明：相比传统固定转速比的冷却系统控制策略，在1次增程器开启、关闭过程中，优化后的发动机冷却系统可节能9.51%；在新标欧洲循环测试下，优化后的电机冷却系统可节能25.64%。
关键词：增程式混动汽车；最小总功耗；冷却系统；控制策略
Control strategy of cooling
system for extended-range hybrid vehicle
FENG Jinfeng1, CHEN
Xiaofei2, LIU Changzhen2, BAI Shuzhan1*
1. School of Energy and
Power Engineering, Shandong University, Jinan 250061,China;2. China North
Engine Reaserch Institue, Tianjin 300400,China
Abstract：To reduce the total power consumption of the
extended-range hybrid vehicle cooling system, the influence of the power
distribution of the water pump and fan on the cooling effect is studied. Under
the premise of ensuring the cooling effect, the speed of the pump and fan with
the lowest power consumption under different heat dissipation and wind speed is
calculated. The control model of the cooling system is built in Simulink to
optimize the control strategy，and simulation analysis is carried out. The results show that the optimized
engine cooling system can save energy by 9.51% compared with the traditional
cooling system control strategy with a fixed speed ratio during the opening and
closing process of the primary range extender; under the new European driving
cycle (NEDC), the optimized motor cooling system can save energy by 25.64%.
Keywords:extended-range hybrid vehicle; minimum
power consumption; cooling system; control strategy
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