Battery State Estimation Error Isolation via Feedback Loop

The patent implements a feedback mechanism where the estimated SOC is fed back into the SOH estimation process, and the estimated SOH is fed back into the SOC estimation process. This creates a closed-loop system that continuously refines estimates while isolating error propagation. The key innovation is that when current measurement errors occur, they are detected and prevented from being repeatedly fed back into the estimation algorithms, thus breaking the error accumulation cycle while maintaining continuous estimation updates.

The patent applies beforehand cushioning by implementing error detection and isolation mechanisms before errors can propagate through multiple estimation cycles. The system monitors current measurement values and identifies when errors occur, then prevents these erroneous values from being used in subsequent SOC and SOH calculations. This protective measure is established in advance, cushioning the estimation system against error propagation while maintaining real-time monitoring capabilities using valid measurement data.