Lithium-ion batteries (LIBs) are extensively used in many applications; from portable devices to major energy applications such as battery energy storage systems (BESSs). Their packs are usually equipped with accurate battery management systems (BMSs) to maintain the safe operation of the cells. To overcome the drawbacks of BMSs implemented with micro-controllers such as low reliability, low flexibility, and difficulties in troubleshooting, a programmable logic controller (PLC) based BMS is proposed in this paper. Furthermore, the accurate real-time estimation algorithm for state of charge (SOC) is achieved based on the combination of Coulomb Counting (CC) and the open-circuit voltage ($V_{OC}$) methods. The advantage of including $V_{OC}$ method is to initialize SOC and performing frequent recalibration when the battery is in standby mode. Hence, the posed accumulated errors problem from using CC method are fully mitigated. Siemens TIA Portal software is used to implement the proposed PLC-based BMS, where SIMATIC STEP 7 and SIMATIC WinCC are utilized for facilitating the code development and monitoring using human–machine interface (HMI), respectively. Presented results prove the effectiveness of the proposed PLC-based BMS. Future research directions related to PLC-Based BMS are lastly discussed.

锂离子电池 (LIB) 广泛用于许多应用领域；从便携式设备到主要能源应用，例如电池储能系统 (BESS)。他们的电池组通常配备精确的电池管理系统 (BMS)，以维持电池的安全运行。为了克服微控制器实现的 BMS 可靠性低、灵活性低、故障排除困难等缺点，本文提出了一种基于可编程逻辑控制器 (PLC) 的 BMS。此外，基于库仑计数（CC）和开路电压（${伏}_{哦C}$） 方法。包括的好处${伏}_{哦C}$方法是在电池处于待机模式时初始化SOC并频繁重新校准。因此，完全缓解了使用 CC 方法带来的累积误差问题。西门子 TIA Portal 软件用于实施建议的基于 PLC 的 BMS，其中 SIMATIC STEP 7 和 SIMATIC WinCC 分别用于使用人机界面 (HMI) 促进代码开发和监控。所呈现的结果证明了所提出的基于 PLC 的 BMS 的有效性。最后讨论了与基于 PLC 的 BMS 相关的未来研究方向。