Honeywell BES Battery Safety Electrolyte Sensors
Honeywell Battery Safety Electrolyte Sensors (BES) are advanced automotive-grade devices designed for the early detection of venting and thermal runaway in lithium-ion battery systems. These sensors utilize a patented rate-of-change algorithm and effectively monitor electrolyte vapor, hydrogen, and carbon monoxide, providing reliable alerts during critical thermal events. The BES series electrolyte sensors come in 12V and 24V versions, are protected against siloxane poisoning, and work with different types of battery chemicals. These components operate within a temperature range from -40°C to +85°C and a humidity range from 0 to 95%RH. Typical applications include battery modules in automotive systems, electric vehicles, and sealed lithium-ion battery packs.
Features
- Designed to withstand siloxane poisoning
- Enhances safety and reduces integration costs
- Identifies venting and thermal runaway risks
- Monitors electrolyte vapor, hydrogen, and carbon monoxide
- Uses a patented rate of change for reliable gas detection
- Works with all Lithium-ion battery chemistries
Applications
- Battery modules in automotive systems
- Electric vehicles
- Hybrid vehicles
- On-road
- Sealed lithium-ion battery packs
Technical Specifications
| Parameters | Values |
|---|---|
| Nominal Supply Voltages | 12V and 24V |
| Operating Temperature Range | -40°C to +85°C |
| Humidity | 0 to 90%RH |
| Ingress Protection | IP3X |
Video
This TTI Tech Specs video for Honeywell Battery Safety Electrolyte Sensors explain that the BES is designed for early-stage hazard detection in lithium-ion battery systems. These sensors are automotive-grade devices that monitor electrolyte vapor, hydrogen, and carbon monoxide, using a patented rate-of-change algorithm to deliver timely alerts.
See video transcript below
Video Transcript
“Firsts” can be something to celebrate, like the first transistor or the first person in space. Then there’s First Vent. It’s the precursor to lithium-ion battery thermal runaway, so you won’t celebrate it happening, but you can celebrate detecting it with Honeywell’s automotive-grade BES Series Battery Safety Electrolyte Sensor. Backed by over 12 years of research, the BES Series is compatible with all lithium-ion battery chemistries, resists siloxane poisoning, and uses an advanced rate-of-change algorithm to detect significant changes in target gases, enabling proactive mitigation and enhanced asset protection. This is also easier to integrate and is better at preventing false positives than PPM-based sensors, providing an early warning to enact mitigation measures and reduce the risk of thermal runaway. The BES Series can also sense hydrogen and carbon monoxide gases released during thermal runaway. The sensors support 12V and 24V power systems and communicate through CAN 2.0B. Additionally, they feature an ECO Mode to help reduce power consumption.
