Se pare ca o baterie Li-ion se poate incalzii atat de tare incat sa ia foc. Asa ca va sfatuiesc sa nu va mai lasati laptop-urile aprinse si nesupravegheate.
If the battery gets hot enough to ignite the electrolyte, you are going to get a fire.
When a fire like this happens, it is usually caused by an internal short in the battery. Recall from the previous section that lithium-ion cells contain a separator sheet that keeps the positive and negative electrodes apart. If that sheet gets punctured and the electrodes touch, the battery heats up very quickly. You may have experienced the kind of heat a battery can produce if you have ever put a normal 9-volt battery in your pocket. It a coin shorts across the two terminals, the battery gets quite hot.
In a separator failure, that same kind of short happens inside the lithium-ion battery. Since lithium-ion batteries are so energetic, they get very hot. The heat causes the battery to vent the organic solvent used as an electrolyte, and the heat (or a nearby spark) can light it. Once that happens inside one of the cells, the heat of the fire cascades to the other cells and the whole pack goes up in flames.
sursaPoza cu un laptop care a explodat in timpul unei conferinte in Japonia :
AN INQUIRER READER attending a conference in Japan was sat just feet away from a laptop computer that suddenly exploded into flames, in what could have been a deadly accident.Gaston, our astonished reader reports: "The damn thing was on fire and produced several explosions for more than five minutes".Should you witness such an event, his advice is, "Don't try anything courageous/stupid, stay away, away, away!"
"For the record, this is a Dell machine," notes Gaston. "It is only a matter of time until such an incident breaks out on a plane," he suggests.
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