基于两级双向DC-DC变换器的电池管理单元设计  

Design of battery management unit based on two-stage bidirectional DC-DC converter

作　　者：陈尊杰 初晨 金平[2] CHEN Zunjie;CHU Chen;JIN Ping(Xinanjiang Hydropower Plant of State Grid Xinyuan Hydropower Co.,Ltd.,Hangzhou 311608,China;College of Energy and Electrical Engineering,Hohai University,Nanjing 211106,China)

机构地区：[1]国网新源水电有限公司新安江水力发电厂,浙江杭州311608 [2]河海大学能源与电气学院,江苏南京211106

出　　处：《电子设计工程》2023年第3期11-15,共5页Electronic Design Engineering

基　　金：国家自然科学基金项目(51407061)。

摘　　要：作为电能存储的重要设备,单体蓄电池之间往往存在一致性差异,在成组使用过程中会产生单体电池利用率低、寿命短、系统安全性低等一系列问题。针对这一问题,通过设计两级双向DCDC变换器电池管理单元控制电池充放电过程,消除一致性差异。采用SN74LVC2T45电平转换芯片、HCPL-J312型驱动光电耦合器和B1205S电源模块搭建驱动电路,结合CLLC变换器谐振腔工作原理设计实验电路参数。实验结果表明,该电路在正反向运行都能满足实际工程参数要求,并且实现了整流侧和逆变侧开关管的软开关。As necessary equipment of electric energy storage,there are consistency differences between the single battery,which will produce a series of problems of group use,such as low utilization rate,short life,low system safety. In response to this problem,a two-stage bidirectional DC-DC converter battery management unit is designed to control the charging and discharging process of the battery to eliminate the consistency difference. SN74LVC2T45 level conversion chip,HCPL-J312 drive photocoupler,and B1205S power supply module build the drive circuit. The experimental circuit parameters are designed in combination with the working principle of the CLLC converter resonant cavity. The experimental results show the forward and reverse operation of the circuit under different input voltages.Load conditions can meet the requirements of actual engineering parameters and realize the soft switching of rectifier side and inverter side switches.

关 键 词：电池管理电路 CLLC谐振变换器 双向DC-DC变换器 电路设计 

分 类 号：TN710[电子电信—电路与系统]