汽车14V电气能量管理系统及其应用

Automotive 14V Electrical Energy Management and Its Application

针对传统的车辆电气系统中,发电机的输出电压与蓄电池的状态难以监测和部分电负载不可控制的问题,本文中对14V电气能量管理(14V-EEM)系统进行研究。该系统可在发动机和蓄电池的有利工作状态下,适时主动地调节发电机的输出电压和控制部分与安全无关的大功率电负载,在满足整车电气能量需求的同时,提高了整车燃油经济性和整车电气网络可靠性。最后以一汽红旗H7某款车型作为14V-EEM系统运行载体,进行了NEDC工况下的测试。结果表明,油耗约降低2%,蓄电池的电平衡为正值,达到了预期效果。

In view of that in traditional vehicle electric system, the output voltage of generator and the states of battery are difficult to monitor and some on-board electric appliances are uncontrollable, the 14V electrical energy management （14V-EEM） system is investigated in this paper. The system can actively and timely regulate the output voltage of generator and exert control on some non-safety-related high-power appliances under the benefi- cial working states of engine and battery, to enhance the fuel economy of vehicle and the reliability of on-board elec- tric network while meeting the electric energy demands of vehicle. Finally a 14V-EEM system is installed on a FAW H7 vehicle to conduct a test with NEDC cycle. The results show that its fuel consumption reduces by around 2% with a positive electric balance, attaining the expected results.