Hydrogen sensor from Posifa screens EV battery security and leaks| Electronics Weekly
They’re designed to supply early warning of irregular situations inside EV battery packs and different demanding safety-critical environments.
In comparison with the corporate’s earlier PGS4100 collection, the brand new sensors ship 10x sooner responses, says Posifa. Additionally they measure hydrogen concentrations from 0% to 25%, and have an prolonged service lifetime of 15 years.
Thermal runaway
“Thermal runaway isn’t all the time instantaneous,” stated Peng Tu, President and CEO at Posifa Applied sciences. “In lots of EV battery occasions, hydrogen seems through the early venting part — minutes earlier than ignition.”
“The PGS5100 is constructed to detect that hydrogen sign reliably contained in the pack, serving to OEMs set off mitigation and provides occupants extra time to react, with out the lifetime limitations of catalytic sensors.”
In accordance with the corporate, the PGS5100 collection decide hydrogen focus by measuring adjustments within the thermal conductivity of gasoline mixtures. Built-in humidity and barometric stress sensors mechanically compensate for environmental variations, it says making certain correct readings throughout temperature, humidity, and altitude ranges.
Being immune to condensation and non-reactive to contaminants, the units can present long-term steady operation in harsh situations corresponding to EV battery enclosures, gas cell methods, and industrial amenities.
Its digital output is hydrogen focus in ppm (elements per million). For instance, when the output rely is 5000, the hydrogen focus is 5000 ppm (or 0.5 % vol).
Hydrogen sensor
Options of the PGS5100 hydrogen sensor:
- helps MODBUS-RTU/RS-485 output (CAN shall be following)
- 100ms response time
- 200ms warm-up time
- function from a 5V provide
- typical common energy consumption of 50mW
- housed in a compact IP6K9-compliant enclosure with an automotive-grade connector
Posifa Applied sciences – previously referred to as Posifa Microsystems – has its headquarters in San Jose, California.