摘要
分析通信用后备电源锂电池组均衡充电的特点,提出大阈值电压的均衡控制策略。据此设计制作了锂离子电池组均衡控制电路,分别对电池组进行0.1 C、0.25 C和0.5 C倍率的均衡充电测试。实验结果表明:当电池组因电力系统发生故障放空容量且电力系统又恢复正常后,对充电速度要求较高,宜采用大电流大阈值的均衡充电方式,迅速有效地将电池组充满电,确保后备电源给通讯设备提供稳定的电能。当电池组均衡充电结束后,设定为脉冲浮充充电状态,以节约电能。
The characteristics of communications standby lithium-ion batteries were analyzed;the larger charging current and larger threshold voltage of equalization control strategy was put forward.The lithium-ion battery pack equalization control circuit was designed,and the equalization charging experiments at the ratio of 0.1 C,0.25 C and 0.5 C were carried out.The experimental results show that when the battery pack fails to vent capacity due to power system fault and the power system returns to normal,the charging speed is required to be high.The balanced charging mode of large current and large threshold value should be adopted to fully charge the battery pack quickly and effectively,so as to ensure that the backup power supply provides stable power to the communication equipment.When the equalizing charging of the battery pack is finished,it is set to the pulse floating charging state to save electric energy.
作者
汤秀芬
米晨
TANG Xiu-fen;MI Chen(School of Physics and Electronic Electrical Engineering,Ningxia University,Yinchuan Ningxia 750021,China;Department of Asset and Laboratory Management,Ningxia University,Yinchuan Ningxia 750021,China)
出处
《电源技术》
CAS
北大核心
2020年第9期1348-1350,1374,共4页
Chinese Journal of Power Sources
基金
宁夏高等学校科学技术研究项目资助(NGY2018029)。
关键词
后备电源
锂离子电池
均衡充电
阈值电压
backup power
lithium-ion batteries
equalization charging
threshold voltage
作者简介
汤秀芬(1967-),女,辽宁省人,教授,硕士,主要研究方向为电气工程及电源技术。
