CAJ | 학술논문

为了探索磷酸铁锂电池取代铅酸蓄电池作为变电站用直流电源的工作特性，通过浮充电测试，对铅酸电池和磷酸铁锂电池在不同浮充电压下的浮充电流特性、搁置特性、模拟工况放电特性等方面进行比对分析，发现磷酸铁锂电池具有远远超过铅酸蓄电池的大电流放电能力；磷酸铁锂电池具有不同于铅酸蓄电池的浮充特性，建议其浮充电压应选择在3.50 V 左右。对磷酸铁锂电池组进行长时间浮充试验发现，在室温下3.6 V 电压浮充运行一年后，其容量保持率高达96.06%。
위료탐색린산철리전지취대연산축전지작위변전참용직류전원적공작특성，통과부충전측시，대연산전지화린산철리전지재불동부충전압하적부충전류특성、각치특성、모의공황방전특성등방면진행비대분석，발현린산철리전지구유원원초과연산축전지적대전류방전능력；린산철리전지구유불동우연산축전지적부충특성，건의기부충전압응선택재3.50 V 좌우。대린산철리전지조진행장시간부충시험발현，재실온하3.6 V 전압부충운행일년후，기용량보지솔고체96.06%。
In order to probe working characteristic of lithium iron phosphate battery replacing lead-acid battery as direct cur-rent(DC)power source of substation,this paper compares and analyzes floating charge current characteristic,shelf charac-teristic and simulating working condition of lead-acid battery and lithium iron phosphate battery under different floating charge voltage. It was discovered that the lithium iron phosphate battery was provided with more heavy current discharge ca-pability outdistancing the lead-acid battery and different floating charge characteristic. It was suggested to select about 3.50 V floating charge voltage for the lithium iron phosphate battery. It was discovered by long-time floating charge test on lithi-um iron phosphate battery pack that after running one year at room temperature with 3.6 V floating charge voltage ,reten-tion rate of capacity of the lithium iron phosphate battery pack reached up to 96.06%. This conclusion was of importance to master floating charge characteristic of the lithium iron phosphate battery and promote its application in DC system of the substation.