Metis Engineering presents new battery safety system

The UK-based firm Metis Engineering presented ‘Cell Guard’, a new battery safety sensor that aims to revolutionise battery health monitoring for electric vehicles (EVs) and Energy Storage Systems (ESS).

According to Metis, the Cell Guard sensor provides “unrivalled accurate and detailed information on the health of a lithium-ion battery pack to improve longevity”, as well as being capable of detecting cell venting, which is an early sign of battery failure vastly reducing the risk of thermal runaway. Furthermore, next to the traditionally monitored temperature and voltage sensors, “Cell Guard monitors a range of environmental parameters required to ensure that the battery continues to operate in optimum conditions, including VOCs, Pressure change, Humidity, Dew point and has an optional Accelerometer to record shock loads.”

If an issue is then detected with the battery, the system will raise a warning to alert the driver that cell venting has occurred. The sensor can also trigger the process to cut the circuit to the battery pack, giving it the opportunity to cool down with the objective of preventing thermal runaway.

“As cells age the chance of one in a pack of hundreds or thousands having a fault increases significantly. The early detection of cell venting is vital to the safety of the vehicle’s passengers and everything in the immediate proximity,” said Joe Holdsworth, Managing Director at Metis Engineering. “Our sensor offers far greater accuracy and data than current battery cell monitoring equivalents, and at a much lower cost, up to ten times cheaper than alternatives.”

Source: Info via email

1 Comment

about „Metis Engineering presents new battery safety system“
23.05.2023 um 00:08
Getting chemistries that do NOT vent, meaning they are solid-state without volatile electrolytes is a better path to making BEVs safer and more enticing to the consumer public at large. Adding 'modules' weight and complexity to a battery pack is not the best use of R&D monies for a cost effective battery pack.Company Sakku has a solid-sate "printed" product pilot plant line in operation that has been used to "print out" batteries in specific forms for portable electronics. Sakku has also presented printed battery cells with cooling passages printed into the cell on the manufacturing line. Cutting down on ancillaries in the battery pack, allowing for more cells per pack weight percentage also allows more energy dense BEV packs at lighter weights.

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