摘要
本设计作为可远程控制锂电池充放电的系统,能够为恶劣环境下的电子设备提供电源。锂电池充放电控制系统的通信部分采用RS485通信,由PC端作为上位机发布锂电池充放电命令,STM32单片机作为下位机执行对锂电池的充放电控制命令。整个系统由充电电路、放电电路、电压及电流采样电路、充放电指示电路和蜂鸣器报警电路构成。控制系统通过获得的锂电池电压与电流信息,对数据进行可视化操作。当充电时电压达到4.2V时,结束充电进程,进行锂电池过冲保护;放电时电池电压小于2.8V时,应当结束放电过程,进行锂电池低压保护。通过实验表明,该设计能够防止电池过充、过放、短路、过流等问题,增强系统应用弹性,提高安全系数。
This system which can control lithium battery charging and discharging remotely, can provide power for the electronic equipment in bad environment. The communication part of the lithium battery charge and discharge control system adopts RS485 comintinication, and the PC ternlinal is used as the upper computer to release the charge and discharge command of the lithium battery, and the STM32 microcontroller acts as the lower computer to exectite the charging and discharging control command of the lithium battery. The whole system is composed of a charging circuit, a discharge circuit, a voltage and current sampling circuit, a charging and discharging indicating circuit and a buzzer alarming circuit. The control system carries out visual operation of the data through the voltage and current inlbrmation of the lithium battery. When the charging voltage reaches 4.2V, the process is ended and the lithium battery is protected by overshoot. Besides when the battery voltage is less than 2.8V, the discharge process can be finished and the low-voltage protection of the lithium battery should be carried out. The experiment shows that the design can control the problems of overcharge, over discharge, short circuit, over-current and so on, and enhance the application elasticity of the system and improve the safety factor.
出处
《电源世界》
2017年第12期32-36,共5页
The World of Power Supply
基金
四川省西南科技大学创新基金项目精准资助专项(jz17-071)
