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Thermal runaway has emerged as an ever-increasing safety concern in automotive, air and marine vehicles as these industries convert to using electrification. The push for the electrification of vehicles has created a rapid acceleration of the use of Lithium-ion (Li-ion) batteries. There are a number of failure modes during the battery lifetime that could occur in an Electric Vehicle, but the most common is a thermal runaway.
In the simplest terms, thermal runaway begins when the heat generated within a battery exceeds the amount of heat that is dissipated to its surroundings. If the cause of the excessive heat creation is not cooled or removed from the surroundings, the condition will worsen. As the internal battery temperature rises, the battery current will also rise — which in turn causes more heat.
This results in a domino effect, and thermal issues in a single cell can begin to affect other batteries in close proximity (or part of the same pack). Once underway, thermal runaway is difficult to control and rein in. To prevent any injury to the passengers, one solution is to send an alarm as soon as possible to the passenger to leave the car when there is any leakage detection. SGX offers two solutions: The SGX-BLD1 and the SGX-BLD2.
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SGX-BLD1
A Battery Failure Detection sensor that measures H2 concentration when different battery leakage occurs through CAN communication |
SGX- BLD2
The same as the SGX-BLD1
Except it monitors both H2 and CO |
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