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- Title
A Novel Evaluation Criterion for the Rapid Estimation of the Overcharge and Deep Discharge of Lithium-Ion Batteries Using Differential Capacity.
- Authors
Kurzweil, Peter; Frenzel, Bernhard; Scheuerpflug, Wolfgang
- Abstract
Differential capacity dQ/dU (capacitance) can be used for the instant diagnosis of battery performance in common constant current applications. A novel criterion allows state-of-charge (SOC) and state-of-health (SOH) monitoring of lithium-ion batteries during cycling. Peak values indicate impeding overcharge or deep discharge, while dSOC/dU = dU/dSOC = 1 is close to "full charge" or "empty" and can be used as a marker for SOC = 1 (and SOC = 0) at the instantaneous SOH of the aging battery. Instructions for simple state-of-charge control and fault diagnosis are given.
- Subjects
LITHIUM-ion batteries; FAULT diagnosis; ELECTRIC capacity
- Publication
Batteries, 2022, Vol 8, Issue 8, pN.PAG
- ISSN
2313-0105
- Publication type
Article
- DOI
10.3390/batteries8080086