What are important metrics to track in a closed loop system?

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BMS Communication Metrics In a closed-loop system, the Battery Management System (BMS) plays a crucial role in monitoring and controlling battery performance. To ensure reliable communication between the BMS and the system, it’s essential to track metrics such as packet error rate (PER), packet loss, and communication latency. By monitoring these metrics, you can identify potential issues with the BMS communication protocol or hardware, allowing for timely adjustments or replacements.
Battery Health Metrics Regularly tracking battery health metrics is vital to maintaining a healthy and efficient closed-loop system. Key metrics to monitor include state of charge (SOC), state of health (SOH), and battery internal resistance. For example, a 10% decrease in SOH can indicate a 20% reduction in battery capacity, while a 100 mΩ increase in internal resistance can lead to a 10% decrease in battery efficiency. By tracking these metrics, you can adjust your system settings to optimize battery performance and extend its lifespan.
Capacity and Cycle Count To get the most out of your closed-loop system, it’s essential to monitor and manage battery capacity and cycle count. As a general rule, a lithium-ion battery’s capacity will decrease by 20% after 300-500 charge cycles. To avoid premature degradation, it’s recommended to limit charge cycles to 100-200, depending on the battery type and system requirements. By tracking capacity and cycle count, you can adjust your system settings to optimize battery performance and extend its lifespan.