SGX Sensortech's Gas Sensors for Thermal Runaway Detection

2023-06-19 12:29:55

SGX Sensortech's Gas Sensors for Thermal Runaway Detection

SGX Sensortech's TRDU5 sensor detects flammable gases in lithium-ion batteries, providing early warning signs of thermal runaway. It swiftly assesses the situation, allowing timely countermeasures to protect occupants and the battery pack. With a compact

Lithium-ion (Li-ion) batteries, although generally reliable, can occasionally experience failure due to various factors. One critical issue that arises from such failures is thermal runaway—a situation where the battery undergoes an internal reaction, generating heat and causing chemical decomposition within the battery cell. In some cases, this can lead to the release of flammable gases. When these gases ignite and spread to other cells within the battery pack, it triggers a battery thermal event known as thermal runaway.

Thermal runaway can potentially occur in any Li-ion battery pack application, making it crucial to detect and address it promptly, regardless of cell size, electrochemistry, or pack design. Electric Vehicles (EVs) are one of the common applications of Li-ion batteries, where early detection of thermal runaway venting is of utmost importance due to the immediate danger posed by flammable vent gases to the vehicle and its occupants.

To tackle this challenge, SGX Sensortech offers a robust solution known as the Thermal Runaway Detection Unit (TRDU5) sensor. This groundbreaking sensor technology enables the detection of flammable gases vented during battery cell failure, providing early warning signs of thermal runaway in lithium-ion batteries.

The TRDU5 sensor technology by SGX Sensortech quickly identifies and assesses the situation within seconds of the initial cell vent. By monitoring various physical aspects of the cell ejecta plume within the enclosure, it determines whether the battery thermal event is contained or spreading to adjacent cells. This swift detection allows the Battery Management System (BMS) to initiate timely countermeasures to safeguard the occupants and protect the battery pack.

Key features of the TRDU5 sensor include:

Fastest detection of cell venting: The sensor detects cell venting from a single point within the battery pack, regardless of cell size, electrochemistry, or battery pack configuration.

Demonstrated performance life: The TRDU sensor has demonstrated a performance life of up to 10 years, ensuring long-term reliability.

Compact configuration: The sensor is designed to have a compact form factor, making it easy to integrate into various battery pack designs.

Standalone or integrated operation: It can be used as a standalone device or seamlessly integrated into the Battery Management System (BMS) architecture.

Multi-parameter monitoring: In addition to detecting Hydrogen (H) and Carbon Dioxide (CO2), the TRDU5 sensor can monitor internal pack pressure, temperature, and Relative Humidity (RH). This comprehensive monitoring capability provides a holistic view of the battery's condition and enhances safety measures.

By employing SGX Sensortech's TRDU sensor technology, battery manufacturers, EV manufacturers, and other Li-ion battery pack users can significantly enhance safety and mitigate the risks associated with thermal runaway. The advanced detection capabilities of the TRDU5 sensor empower BMS systems to take timely action and prevent the escalation of thermal events, ensuring the well-being of both the vehicle and its occupants.

In conclusion, SGX Sensortech's gas sensors for thermal runaway detection in lithium-ion batteries represent a significant advancement in battery safety technology. With the ability to detect flammable gases and monitor critical parameters, the TRDU sensor plays a vital role in safeguarding against thermal runaway incidents, enabling a safer and more reliable future for Li-ion battery applications.