车载宽范围输入电压的电源调理电路设计  

Design of Power Conditioning Circuit for Wide Range input Voltage of Vehicle

作　　者：孟庆涛 龚思扬 闫云艳 李菲菲 

机构地区：[1]中国北方发动机研究所,天津300400

出　　处：《现代车用动力》2017年第4期9-11,22,共4页Modern Vehicle Power

摘　　要：设计了一种宽范围输入电压的高可靠性电源电路,其可最大程度地满足车载电源要求,并通过软关断保证电控系统数据完整。电源电路输入电压为6 V^33 V条件下,输出电压稳定;为33 V^100 V浪涌条件下,将电压降至33 V后输出;为最高250 V尖峰脉冲条件下,将负电压滤除,降至33 V后输出;发动机起动时,通过钥匙开关24 V控制后续供电;发动机熄火时,电控系统在采集到熄火信号后,完成数据存储等工作,并切断后续供电电源,实现软关断功能。A high reliability power supply circuit with wide range input voltage is designed,which can satisfy the requirement of vehicle power supply to the maximum extent,and can ensure the data integrity of the electronic control system through soft shutdown. If the input voltage in power supply circuit is 6~33 V,the output voltage is stable. If the input voltage is 33 ~100 V in surge conditions,the output voltage is 33 V. If the peak pulse voltage is 250 V,negative voltage will be filtered,and the output is 33 V. When the engine starts,the 24 V control power is supplied by subsequent key switch. When the engine is out of fire,the electric control system can complete the data storage and other work after the signal is extinguished,and then cut off the power supply to realize the soft cutting function.

关 键 词：发动机 电控系统 电源调理电路 软关断 车载电源 

分 类 号：TK424.3[动力工程及工程热物理—动力机械及工程]