Meaning
Diagnostic methodologies evaluate the internal state of a battery without physically opening the cell or altering its chemical components. Implementation of non destructive degradation analysis allows for the assessment of fleet health while the batteries remain in service. These techniques rely on electrical and thermal signals to infer the condition of the electrodes and electrolyte.
Internal Inspection
Voltage and current measurements provide the primary inputs for these analytical models. By comparing the current behavior of a cell to its historical performance, software can detect the onset of aging mechanisms like solid electrolyte interphase growth.
Health Monitoring
Long term tracking of battery performance identifies the specific conditions that accelerate wear. Using non destructive degradation analysis, operators can predict the remaining useful life of a pack and schedule maintenance before a failure occurs. This approach is more cost effective than periodic replacement because it maximizes the utilization of every battery.
When data suggests that a battery is no longer fit for a primary application, it can be diverted to a second life use in stationary storage.
Economic Value
Reducing the uncertainty around battery health increases the resale value of used electric vehicles. Buyers are more willing to pay for a second hand car if they have a certified report on the condition of the battery pack.
