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| Stato di Carica× | Stato di Salute× | |
|---|---|---|
| Campo | Termodinamica | Termodinamica |
| Famiglia | Process / pipeline | Process / pipeline |
| Anno di origine≠ | 2004 | 2017 |
| Ideatore≠ | Gregory Plett | Craig Birkl |
| Tipo≠ | Estimation algorithm | Degradation assessment |
| Fonte seminale≠ | Plett, G. L. (2004). Extended Kalman filtering for battery management systems of LiPB-based HEV battery packs. Journal of Power Sources, 134(2), 252-261. DOI ↗ | Birkl, C. R., Roberts, M. R., McTurk, E., Bruce, P. G., & Howey, D. A. (2017). Degradation diagnostics for lithium ion cells. Journal of Power Sources, 341, 373-386. DOI ↗ |
| Alias | SOC, charge estimation | SOH, health estimation |
| Correlati | 3 | 3 |
| Sintesi≠ | State of Charge (SOC) is the amount of energy available in a battery or energy storage system, expressed as a percentage of its maximum capacity. Accurate SOC estimation is critical for safe operation: underestimating SOC can cause unsafe discharges, overestimating can cause overcharging. SOC estimation combines current integration (coulomb counting), voltage-based methods, and Kalman filtering to achieve accuracy despite measurement noise and model uncertainties. | State of Health (SOH) quantifies battery degradation by measuring how much capacity and power capability have been lost due to aging. SOH is expressed as a percentage (100% = new, 80% = end of life for many applications). Tracking SOH enables predictive maintenance, end-of-life detection, and accurate range/power predictions in aging systems. SOH reflects cumulative effects of cycling, calendar aging, and operating conditions. |
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