This article might be useful
Article Mechanism of Thermal Runaway in Lithium-Ion Cells
Dear Sourav
Thank you for your suggestion.
We have a Li-ion battery pack with about 10,000 cell batteries and now, we are worried about its maintenance and use. Despite the use of BMS and PMU, Our biggest concern is the TRA of cells. I am looking for an practical solution.
Hello, here are my 2 cents. Please take it with a large grain of salt since I only have limited experience in large battery systems.
Obviously the temperature is an important indicator.. so be sure to have sufficient temperature readings. But, for a short circuit it will not help much: the temperature reading may come too late due to the time it takes for a rise in temperature to be measured on the cell surface or the terminal of the cell. These temperature probes are mainly to avoid TRA due to cycling or environmental factors.
An indication that you have a short circuit can be derived from the cell voltages (based on the internal resistance of the cells). The issue here is that short circuit events happen very quickly and often between cells that cannot be actively disconnected. Therefore, avoiding TRA mainly comes down to avoiding fires from secondary systems and avoiding liquid condensation or other potential short circuit hazards.
Besides that, mitigation is key.. so prepare for a TRA event and reduce the damage in case it does happen (e.g. allowing sufficient spacing of racks/modules, installing fire detection systems, installing gas monitors -to confirm if it is a battery fire-,..).
Good luck!
- Badges
- Science topic
- Similar topics
- Electrochemistry
- Battery