2015年全国大学生电子设计竞赛双向DC-DC变换器（A题）2015年8月15日摘要本系统以STM32单片机为主控制器，以非隔离式Buck-Boost型电路为核心，设计并制作用于电池储能装置的双向DC-DC变换器，实现可按键设定亦可自动转换电池充放电模式的功能。系统由STM32内部寄存器及扩展口功能，加上按键模块、集成运放模块、LCD液晶显示模块、双向DC-DC变换电路组成。提高了电源效率，有效的保护了电路，经测试，系统能够实现基础部分所有要求。关键词：DC-DC变换器；高效率；STM32；电流控制精度BbstractThis system is given priority to with STM32 MCU controller, with the isolation type Buck - Boost circuit as the core, the design and construction of double DC - DC converter for battery energy storage device, implement key setting can be automatically switched to the battery charging and discharging mode function.System of STM32 internal registers and extension mouth function, and key module, integrated operational amplifier module, LCD liquid crystal display module, two-way DC - DC conversion circuit.Improve the efficiency of the power, the effective protection circuit, after the test, the system can realize all basic requirements.Keywords:DC-DCconverter;Highefficiency;STM32;Current control accura