How to detect ISC?

At the middle stage, electrical and thermal characteristics become significant, and both the voltage and the temperature can be useful indicators for the early detection of ISC.

What is an ISC in a battery?

An ISC occurs when the positive and negative electrode materials of the battery are connected, leading to continuous discharge and heat generation caused by a potential difference . The most dangerous scenario is when the connection occurs between the aluminium collector and the anode because of the good conductivity between those materials .

Can EV battery defect detection reduce thermal runaway accidents?

Battery defect detection based on the abnormality of external parameters is a promising way to reduce this kind of thermal runaway accidents and protect EV consumers from fire danger. However, the influence of temperature and EV states, i.e., charging and driving, on the battery characteristic will complicate the method establishment.

What is a precision-concentrated battery defect detection method?

To cope with the issue, a precision-concentrated battery defect detection method crossing different temperatures and vehicle states is constructed. The method only uses sparse and noisy voltage from existing onboard sensors.

Can thermal runaway batteries be detected 13 days ahead?

The training process only uses data of normal batteries to cope with the inadequacy of thermal runaway battery data. The results show that the method can detect defected batteries 13 days ahead the thermal runaway while achieve the precision of 99.2%.

How do I detect a critical ISC occurrence?

These distances are coloured in green when the difference is positive (safe detection), in red when the difference is negative (unsafe detection). With the filter parameters chosen, both the filters are capable of safely detect the critical ISC occurrence R I S C = 2 Ω, i.e., when the threshold value is considered.