DETERMINING THE LOCATION OF OVERHEATING IN AN ELECTROCHEMICAL BATTERY
DOI:
https://doi.org/10.52326/jes.utm.2026.33(2).04Keywords:
Thermal runaway, multi-cell battery module, cell overheating detection, thin film thermistor, temperature monitoring, multi-cell battery thermal modelingAbstract
This paper presents a device and a method for early warning of the risk of thermal runaway in electrochemical batteries. The effectiveness of the proposed system was assessed using mathematical modeling applied specifically to the battery module of the Audi e-tron. Modeling of prismatic cell overheating and calculation of instantaneous operating modes were performed in Excel Microsoft 365. The results, presented in analytical graphs, demonstrate the ability of the system to detect battery cell overheating, which confirms both the operability of the device and the reliability of the method. The proposed solution is especially suitable for improving the safety of lithium-ion, nickel-cadmium and other multicell battery systems during operation, as well as for integration into new battery modules. Main applications: monitoring cell temperature in a multi-cell battery module; early warning of thermal runaway risk in a multi-cell battery module; providing emergency alerts in case of immediate and obvious thermal runaway danger.
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