Advanced overtemperature detection solution for EV Li-ion battery packs

Littelfuse, Inc. has introduced TTape, a groundbreaking overtemperature detection platform designed to transform the management of Li-ion battery systems. With its innovative features and unparalleled benefits, the platform helps vehicle systems manage premature cell ageing effectively while lowering the risks associated with thermal runaway incidents.

The platform is ideal for various applications, including automotive EV/HEVs, commercial vehicles, and ESS. Its distributed temperature monitoring capabilities facilitate superior detection of localised cell overheating, thereby improving battery life and the safety of battery installations.

The key benefits and differentiators include aiding vehicle systems in managing premature cell ageing and greatly reducing the risks associated with thermal runaway. It ensures that the battery pack remains serviceable for an extended period by initiating temperature management earlier. With a single TTape device, multiple cells can be monitored, alerting the BMS sooner in case of overtemperature scenarios. With a response time of less than one second, it guarantees quicker alerts, signalling the potential onset of thermal runaway conditions. Calibration is not required. It can readily integrate with existing BMS, making it a go-to solution for many battery applications.

Furthermore, the extremely thin design of the platform makes it excellent for conformal installations. With a single MCU input, its distributed temperature monitoring capability drastically improves the detection of localised cell overheating. This approach allows efficient cooling measures to prolong battery life and greatly heightens the safety standards of battery installations.

"Distinguishing itself from NTCs, TTape is a stellar addition to the Littelfuse product family. The profound advantage of localised cell overheating detection ensures quicker alerts to the BMS compared to traditional NTC setups," explained Tong Kiang Poo, global product manager at Littelfuse. "The TTape Platform is a distributed temperature monitoring device for battery packs that helps to improve the detection of localised cell overheating. With no calibration or temperature lookup tables required, and only one MCU input needed, it integrates seamlessly with current BMS solutions alongside NTCs, delivering an enhanced detection of cell overheating."

This groundbreaking product builds upon the company's legacy of innovation. It uses the company's research, design, and development expertise in PPTCs, bringing forth a temperature monitoring solution that the industry eagerly awaits. The platform promises to be a game-changer for the Li-ion battery pack market, highlighting safety and efficiency.