Metis Engineering has earned ISO certification of its Manufacturing Battery Security Sensor, which designed to watch the well being of a lithium-ion battery pack and detect cell venting. The sensor was developed utilizing ISO26262 processes, and has been examined to ISO Automotive Requirements by Applus+ 3C Take a look at, an unbiased testing home.
Manufacturing of the manufacturing model of the Battery Security Sensor has begun within the UK to fill orders from OEMs and Tier 1 suppliers, that are utilizing them in ASIL B purposes.
“Our Battery Security Sensor measures stress change and unstable natural compounds (VOCs) for the detection of cell venting, which is an early stage of thermal runaway,” stated Metis Engineering Managing Director Joe Holdsworth. “It additionally displays humidity, dew level and air temperature parameters to make sure that the battery continues to function in optimum situations.”
The sensor is designed to select up a spread of environmental parameters to make sure that the battery continues to function in optimum situations, and has an non-obligatory accelerometer to file shock hundreds. This knowledge can be utilized to crosscheck with different inputs, similar to cell temperatures, to examine for cell venting. The sensor relays the info over a configurable CAN interface to a management unit, such because the car’s ECU, to alert the motive force that cell venting has occurred. The sensor may set off a course of to chop the circuit to the battery pack, permitting it to chill down and stop thermal runaway.
Metis says its Battery Security Sensor sometimes detects venting inside seconds.
“Fortunately, EV battery fires are very uncommon, however after they do happen, they’re normally catastrophic for the car,” stated Holdsworth. “As cells age, the prospect of 1 in a pack of lots of or 1000’s going unhealthy will increase considerably. The early detection of cell venting is significant to the security of the car’s passengers and the whole lot within the instant proximity. We hope that this sensor provides an reasonably priced a part of the answer.”
Supply: Metis Engineering, Battery Tech Information
