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Dienstag, 28. Juni 2011

Why laptop battery explosion?

Von laptop, 10:16

“Thin”, “large capacity”, “long life”, these are the outstanding characteristics of lithium-ion battery. For this reason, lithium-ion Dell Studio 1737 battery, it has quickly the nickel-metal hydride, nickel-cadmium batteries for laptops and other portable devices today’s first choice to replace Power Equipment. But for several times, it’s about medion battery Explosion heard users are more concerned about the security of the Dell Inspiron 1545 battery. why should this be done?

After analysis must lithium battery explosion caused by a short circuit or overload causing probable cause is in the manufacture of lithium batteries, the manufacturing process of some shortcomings, BTP BWBM battery with defects, security problems that can occur at any time, as it is should be isolation between the two poles of metal dust or copper and aluminum foil membrane perforation burr, resulting in the micro-short. The first situation is serious, it will directly cause a short circuit, and a lot of heat, evaporation of some of the electrolyte, stretch you, the DELL Latitude D620 battery compartment.

In addition, there is a special case, the power charger or laptop, for special reasons, the lithium battery provide instant high voltage / high current caused by heavy cargo such as the charging voltage by a sudden increase to 12.9 V 12.6 V or even higher, then it will generate a high charge current within the circuit should move the Dell Inspiron 6400 battery charge current, but because of some lithium-battery charging overvoltage, over current protection design is weak, which may damage the battery protection cause IC, so that the HP Pavilion DV5 Battery to protect the function of the damage, charging over the needle to the pole piece on the crystallization of lithium metal, sharp point led to a series of micro-short circuit, causing the temperature of the BTP-92GM Batteries is gradually increased, until finally the explosion of the battery, the fire is occurring, this is the main reason for laptop-battery fire.