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ROME. “When the batteries catch fire is because the temperature exceeds a certain value, and the monitoring circuit, monitors and protects the battery, it behaves as it should not. It is conceivable a design flaw “: this is the opinion of Frederick Baronti, assistant professor of the Department of Information Engineering of the University of Pisa, after instances of bursting of the 7 Samsung Galaxy Note battery, which led the ‘ company to withdraw from the market the device.
“For all we know at the moment seems to have a problem similar to what happened in the past, both on mobile phones, and on portable computers, both on the Boeing 787 batteries” explains the researcher.
“All lithium batteries, from the smaller ones used for smartphones to larger ones of an electric vehicle – adds – are equipped with an electronic control that monitors the functioning of every cell so that both in very specific operating conditions and to avoid dangerous situations. In general – he explains – is the electrolyte to catch fire. It happens when the battery temperature exceeds a certain value, and may occur phenomena that produce further heat up to different forms of damage and explosion of the cell. “
For the researcher, if the circuits of battery protection do not work, “the process goes out of control and is the most critical time for the battery.”
Hard to say if in the case of Samsung, Baronti explains, “it was an accident or an anomaly, there may have been several items that did not behave properly. And conceivable a design flaw.
‘In the future it will be possible to have safer batteries?
“the dominant technology in the coming 5-10 years the rimmarrà lithium-ion battery, with small improvements every year. The research progresses on two levels – concludes the researcher -. The technology and the control and battery management. “
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