The lithium-ion (Li-ion) cell is constructed with materials that are flammable and degradable, and can cause mechanical and electrical shocks resulting in a dangerous thermal runaway condition. In addition, Li-ion cell materials may start to break down when temperatures exceed 130 °C. If a cell starts to enter thermal runaway, the results can be catastrophic.
An integral part of maximizing battery pack efficiency and safe operation is the battery management system (BMS). And, mini-breaker thermal cut-off (TCO) devices are key elements in the BMS protection architecture.
Bourns designs its TCO devices to provide accurate and repeatable overcurrent and overtemperature protection. The company’s latest Bourns® Model AC series: