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Metis Engineering’s Battery Security Sensor is designed to watch the well being of a lithium-ion battery pack and detect cell venting, an early signal of catastrophic battery failure.
The corporate has now launched a beta model that incorporates a new streamlined design, optimized for manufacturing within the excessive volumes required by automotive OEMs. It says items are already on trial with plenty of EV OEMs and battery producers.
The sensor is designed to choose up a spread of environmental parameters, together with Risky Natural Compounds (VOCs), Strain Change, Humidity and Dew Level. An optionally available Accelerometer can report shock masses. This information can be utilized to crosscheck with different inputs, resembling cell temperatures, to detect cell venting.
The sensor relays the information over a configurable CAN interface to a management unit, such because the car’s ECU, to alert the driving force that cell venting has occurred. The sensor also can set off a course of to chop the circuit to the battery pack, permitting it to chill down and hopefully stop thermal runaway.
Metis explains that customary battery administration programs (BMS) are designed to watch the well being of the battery pack, however sometimes have just one temperature sensor for each few cells. “This method works wonderful if it occurs to be the cell with the temperature sensor that goes unhealthy, but when the cell is a distance away from the sensor within the pack, by the point the sensor registers the change in temperature, if in any respect, it could very doubtless be too late.” The Metis Battery Security Sensor, nevertheless, “sometimes detects venting inside seconds.”
“The discharge of the beta variations of our Manufacturing Battery Security Sensor marks one other key milestone as we roll out the know-how,” stated Metis Engineering Managing Director Joe Holdsworth. “The sensor is already on trial in electrical sportscars, buses, plane and vans, and the suggestions has been universally very optimistic. My crew plan to make one or two minor modifications earlier than we log off the ultimate spec [which will be] prepared for supply in Q3 this yr.”
Supply: Metis Engineering
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