DS18B20温度传感器在电动汽车电池管理系统中的应用

The implication of DS18B20 in BMS of the electric vehicle

纯电动汽车蓄电池的温度是影响其电池剩余电量和使用寿命的重要因素之一.为准确、可靠地测得动力蓄电池的各单体电池温度,采用美国Dallas半导体公司的数字化温度传感器DS18B20对蓄电池的单体电池进行多点测温设计.DS18B20作为单总线器件,在一条数据线上可以挂接多个元件,大大节省了单片机的端口资源.

The temperature of the electric vehicle is one of the most impotant factors influencing the batteries＇ SOC and its service life.In order to measuring the temperature exactly and realiablely,this article uses DS18B20,which is a digital temperature sensor made in the United States Dallas Semiconductor Corporation,to make design of the muti-point temperature measurement.As a kind of the 1-wire bus devices,several DS18B20 can be connected to one data line,significantly saving the port resources of the MCU.