Li - on stamp battery feature in most of the peregrine electronics we apply because they pack far higher free energy density than their contender . But until now there have been a whole mound of job with those same batteries overheat , and even bewitch flak .
One iPhone 4burst into fire on a plane ; anothercaught fire and burnt its user ’s handwhile it was appoint . Sony , Dell , andApplehave all had to recall laptop because their batteries obtain too red-hot and were deal dangerous .
https://gizmodo.com/this-iphone-4-spontaneously-caught-fire-in-a-flight-5863179
All these battery problems are a effect of something call thermal fleer : once a cellular telephone attain a critical temperature , it ca n’t chill down , so keeps getting hotter until something , umm , bad happens . Problem is , that can happen in seconds , not minutes or hr .
But now a team from the Johns Hopkins University Applied Physics Laboratory has developed an inexpensive sensor that can admonish of impend catastrophic failure in lithium - ion batteries , report The Engineer .
A simple electronic measurement can be used to measure the the temperature of the protective layers between the electrodes and the electrolyte of the battery during normal operation . Basically , a small alternating stream is modify by the cell in a way that is straight off related to the temperature of the user interface between the electrode and the electrolyte .
Because it ’s problem with those accurate layers that make thermal runaway , the detector can spot the problem and shut the battery down before things get out of hand .
Rengaswamy Srinivasan , a chemist in APL ’s Research and Exploratory Development Department , sound out :
“ Ultimately , the new sensor enables battery - management systems to more closely manage barrage performance and , more significantly , detect dangerous thermal conditions at the critical moment when they occur and before the cadre vents or sets itself and the stamp battery on blast . By integrate this technology into their products , manufacturer of battery and battery - management systems , and shelling solution providers can increase both the condom and carrying into action of their ware . ”
luckily , it ’s also jolly brassy . Someone should say Apple . [ The Engineer ; Image : rust.bucket ]
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