摘要
针对传统主动均衡电路存在的硬件成本、控制复杂度、均衡速度等方面的问题,基于模糊控制理论,提出了一种削峰填谷式的电池均衡管理系统,支持电池组同时对多节电池进行并行均衡以及单体电池间的均衡,光MOSFET的研发解决了削峰电路中隔离驱动电路的成本和面积问题。仿真结果表明,基于模糊控制器的均衡策略可以对充放电均衡效率进行优化。基于该驱动电路,设计实现了并行填谷式电池管理系统,测试结果表明,均衡充电时,电池组电压极差可在30 min内从535.2 mV降低到9 mV;均衡放电时,电池组电压极差可从117.1 mV降低到9.8 mV,表明该均衡策略的有效性和实用性。
The traditional active balancing circuit has problems on the hardware cost,control complexity,balance speed,etc.Based on fuzzy control theory,a equlization system with clipping and parallel valley filling function is pro- posed, the system supports multi batteries parallel equalization and equalization from highest voltage battery to lowest voltage battery, the implementation of optical MOSFET solve the control problem of high potential MOSFET, save the cost and area of circuit.The simulation results show that balance strategy which is based on fuzzy control perform well in charge/discharge simulation compared with the one without it.The test results show that the voltage difference changes from 535.2 mV to 9 mV only in 30 minutes under the charging test and the voltage difference changes from 117.1 mV to 9.8 mV under the discharging test,proving the affectivity and practicability of the proposed balancing strategy.
出处
《电力电子技术》
CSCD
北大核心
2017年第2期68-71,共4页
Power Electronics
基金
国家自然科学基金(61376028)
上海市科委智能制造及先进材料领域专项基金(13111104600)~~
关键词
电池管理系统
模糊控制
削峰均衡
battery management system
fuzzy control
clipping equalization
