一种多电池包并联技术的研究  

Research on parallel technology of multi battery pack

作　　者：王贤江 胡振营[1] 石玉 

机构地区：[1]深圳市理邦精密仪器股份有限公司,广东深圳518067 [2]电子科技大学微电子与固件电子学院,四川成都610054

出　　处：《电源技术》2016年第7期1393-1395,1507,共4页Chinese Journal of Power Sources

摘　　要：在电池应用系统中为了提高电池的容量以及可靠性采用多个电池包进行并联,从理论上来讲两个源是不能并联的。实际应用中为了实现各个电池包之间的相互独立采用了二极管与电池包串联来实现隔离,但是此隔离二极管会造成一定程度地功率损失。为了降低多电池包并联采用二极管隔离所带来的功率损失,结合同步整流技术在开关电源中的应用,并结合其控制原理采用MOS管来代替二极管并通过相应的控制电路来控制MOS管的导通与关断,从而达到与二极管隔离同样的效果。与此同时,由于MOS管具有极低的导通电阻从而降低了隔离这个部分的损耗。仿真与实验结果均证明了此设计方案的正确性与可行性。In order to improve the capacity and reliablity of battery system using parallel with multiple battery pack, the two sources can not be parallel in theory. In order to achieve the mutual independence between each battery packs using a diode in series with the battery pack to achieve isolation, in order to reduce the power loss by using the isolation diode, the application of synchronous rectification in switching power supply was analyzed, and combined with its control theory, the MOS was used instead of the isolation diode and a corresponding circuit was built to control the MOS on and off, achieving the same effect with the isolation diode. At the same time, because of the low on-resistance of the MOS transistor, the power loss of the original diode isolate is reduced in system. The simulation and experimental results prove the correctness and feasibility of this design.

关 键 词：二极管隔离 同步整流 电池包并联 MOS管 

分 类 号：TM91[电气工程—电力电子与电力传动]