基于电感储能的新型锂离子电池组C2C均衡电路  

A Novel Lithium-ion Battery Pack C2C Equalization Circuit Based on Inductive Energy Storage

作　　者：林鸿业 康龙云[1,2] 卢楚生 罗璇 LIN Hong-ye;KANG Long-yun;LU Chu-sheng;LUO Xuan(South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学,电力学院,广东广州510640 [2]华南理工大学,广东省绿色能源技术重点实验室,广东广州510640

出　　处：《电力电子技术》2020年第7期39-41,共3页Power Electronics

基　　金：广东省科技发展专项基金(2019B090911001)。

摘　　要：串联锂离子电池组由于电池制造工艺、电池工作环境不同等原因,在多次充放电后单体电池之间荷电状态(SOC)和电压存在不一致性。针对串联锂离子电池电压不一致性问题,提出一种新型基于电感储能的锂离子电池组C2C均衡电路,利用电感将能量从电压高的电池单体转移到电压低的电池单体,实现任意两节电池单体之间的电压均衡。该电路具有体积小、均衡速度快的优点。实验结果表明,该均衡电路可以减小锂离子电池组的最大电压差,实现电压均衡。Due to different manufacturing processes f battery working environment,etc.,there is a problem of state of charge(SOC)and voltage inconsistency in series lithium-ion battery after repeated charging and discharging.Aiming at the problem of voltage inconsistency in series lithium-ion battery,a novel lithium-ion battery pack C2 C equalization circuit based on inductive energy storage is proposed,which uses inductor to transfer energy from high-voltage battery cell to low-voltage battery cell.The circuit realizes voltage equalization between any two battery cells.In addition,the circuit has the advantages of small size and fast equalization speed.The experimental results show that equalization circuit can reduce the maximum voltage difference of the lithium-ion battery pack and achieve voltage equalization.

关 键 词：锂离子电池 均衡电路 电感 

分 类 号：TM911[电气工程—电力电子与电力传动]