[关键词]
[摘要]
电池在串联成组使用时,由于制造工艺、工作环境不同等因素,电池之间荷电状态(SOC)和电压存在不一致的问题。为解决该问题提出了一种基于耦合电感型双层Cuk斩波电路电池均衡系统,用耦合电感代替非耦合电感,比传统Cuk斩波电路减少了元器件数量,降低了损耗,提高了均衡效率。同时,该均衡系统使用N沟道MOSFET,由同步触发脉冲PWM中一对互补信号控制。通过电路理论分析,设计了完整的均衡电路,最后在MATLAB/Simulink中进行仿真,结果验证了该均衡系统的高效性。
[Key word]
[Abstract]
When batteries are used in group, the states of charge (SOCs) and voltages are inconsistent between single batteries due to different manufacturing processes and working environments. In order to solve this problem, a battery equalization system based on coupled inductor double-layer Cuk chopper circuit is proposed, in which the coupled inductor is used instead of the uncoupled inductor. Compared with the traditional Cuk chopper circuit, it reduces the number of components, lowers the loss and improves the equalization efficiency. At the same time, the equalization system uses the N-channel MOSFET, which is controlled by a pair of complementary signals in synchronous trigger pulse PWM. Through the circuit theoretical analysis, a complete equalization circuit is designed. Finally, simulation is carried out in MATLAB/ Simulink. The results verify the efficiency of the equalization system.
[中图分类号]
[基金项目]
河南省高等学校重点科研项目(19A470001)