Experimental research on charging characteristics of a pressure-controlled VRLA battery in high-temperature environments  

作　　者：Hua ZHU Jin-jun TAN Zhang-lu XU Ji-sen XU 

机构地区：[1]Institute of Thermal Science and Power Systems, Zhejiang University, Hangzhou 310027, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2009年第3期418-422,共5页浙江大学学报（英文版）A辑（应用物理与工程）

摘　　要：Valve-regulated-lead-acid (VRLA) battery charging performed in high-temperature environments is extremely risky under overcharge conditions, and may lead to a subsequent thermal runaway. A new pressure-controlled charging method was adopted and the charging characteristics of the pressure-controlled VRLA battery in high-temperature environments were ex-perimentally studied. The concept was tested in a large temperature gradient to obtain more details about the effects of users' accustomed charging and discharging modes on battery capacity. The premature capacity loss (PCL) phenomenon under high temperature exposure was analyzed. The results showed that the capacity loss could be recovered by charging using a large current.Valve-regulated-lead-acid （VRLA） battery charging performed in high-temperature environments is extremely risky under overcharge conditions, and may lead to a subsequent thermal runaway. A new pressure-controlled charging method was adopted and the charging characteristics of the pressure-controlled VRLA battery in high-temperature environments were experimentally studied. The concept was tested in a large temperature gradient to obtain more details about the effects of users＇ accustomed charging and discharging modes on battery capacity. The premature capacity loss （PCL） phenomenon under high temperature exposure was analyzed. The results showed that the capacity loss could be recovered by charging using a large current.

关 键 词：Valve-regulated-lead-acid （VRLA） battery Pressure-controlled charging method High-temperature environments Charging and discharging characteristics 

分 类 号：TK1[动力工程及工程热物理—热能工程] TK02