基于STM32F103RCT6的电池管理系统设计

Design of Battery Management System Based on STM32F103RCT6

为精确估算锂电池的荷电状态(state of charge,SOC),设计了一种基于STM32F103RCT6电池管理系统,进行了主控芯片,电流、电压、温度采集传感器以及CAN(controller area network,CAN)总线通信芯片的选型及相应的电路设计。在处理器STM32F103RCT6的基础上设计了电流、电压、温度采集程序和CAN总线通信程序设计,并对测量系统进行了性能测试,测试结果显示,设计的估算系统对电流、电压和温度的采集数据的相对误差均控制在2%以内,采集效果较好,SOC的估算精度明显提高。

In order to accurately estimate the state of charge of lithium battery,a battery management system based on STM32F103RCT6 was designed.The main control chip,current,voltage,temperature acquisition sensor and CAN bus communication chip were selected and the corresponding circuit design was carried out.Based on the processor STM32F103RCT6,the current,voltage,temperature acquisition program and CAN bus communication program are designed.The performance of the measurement system is tested.The test results show that the relative error of the current,voltage and temperature acquisition data is controlled within 2%,the acquisition effect is good,and the estimation accuracy of SOC is significantly improved.