基于STM32的锂电池充电控制电路设计  

Design of Lithium Battery Charging Control Circuit Based on STM32

作　　者：李庆红 聂俊飞 罗婷 呙嘉辉 肖牧青 LI Qinghong;NIE Junfei;LUO Ting;GUO Jiahui;XIAO Muqing(College of Electrical Engineering,Shaoyang University,Shaoyang 422000,China)

机构地区：[1]邵阳学院电气工程学院,河南邵阳422000

出　　处：《仪表技术》2022年第2期37-40,62,共5页Instrumentation Technology

基　　金：2020国家级大学生创新创业训练计划项目(S202010547055);2020年度湖南省大学生创新创业训练计划项目(湘教通(2020)191号)。

摘　　要：设计了一款基于STM32的锂电池充电控制电路。整个系统采用STM32单片机作为控制核心,电源输入部分为整个系统供电;通过检测电路判断锂电池和电源输入部分电路的电压,控制BOOST-BUCK电路自动选择升压和降压模式进行充电,充电过程中进一步判断锂电池的工作状态;通过PID算法调节STM32单片机的PWM占空比控制输出电压和电流大小,从而达到控制充电方式的目的。最后选取锂电池进行测试,测试结果表明了该系统的正确性和稳定性,为解决便携式设备的锂电池充电方式控制提供了一种新思路。This paper designs a lithium battery charging control circuit based on STM32.The whole system adopts STM32 MCU as the control core,and the power input part supplies power for the whole system.The voltage of the lithium battery and the power input circuit are judged by detecting the circuit part,and the boost-buck circuit is controlled to automatically select the BOOST and BUCK modes for charging.During the charging process,the working state of the lithium battery is further judged,and the output voltage and current are controlled by adjusting the PWM duty ratio of STM32 MCU through the PID algorithm so as to achieve the purpose of controlling the charging mode.Finally,the lithium battery is selected for testing.The test results show that the system is correct and stable,which provides a new idea for the control of lithium battery charging mode in portable equipment.

关 键 词：锂电池充电 BOOST-BUCK PID算法 PWM调节 

分 类 号：TM910.6[电气工程—电力电子与电力传动]