Therefore, the use of thermistors in rechargeable batteries is to ensure that the battery maintains the best performance and safety, and to stably monitor the temperature of the rechargeable battery pack to protect your safety. Classification of NTC
The battery explosion threshold temperature depends on the specific chemical compounds in the lithium ion battery. Different NTC thermistor designs are being used depending on the temperature limits. For the widely used lithium cobalt oxide batteries in consumer electronics the upper safe temperature limit is 130 °C to 150 °C.
Integrating NTC thermistors into battery packs is crucial to ensure their safety and performance. By continuously monitoring temperature, NTC thermistors allow for proactive measures to be taken in case of abnormal conditions.
Thermal Protection: By detecting abnormal temperature variations, NTC thermistors help prevent thermal runaway and protect the battery pack from potential thermal damage. Enhanced Battery Life: Proper thermal management through NTC thermistors can extend the lifespan of battery packs by minimizing stress caused by excessive heat.
Research is ongoing to put sensors inside the battery cell, thus giving the ability to measure key internal variables such as electrode potentials, current, temperature, mechanical stress and internal pressure. You do need to consider redundancy as a single thermistor is very cheap as a part, but could be very expensive to replace.
We use a thermistor in a voltage divider circuit to determine the temperature of an external module such as a battery pack. A thermistor is a variable resistor whose resistance varies in proportion to the temperature that the thermistor is exposed to. There are 2 types of thermistors- NTC and PTC.