Galaxy Note 7: we finally know the cause of the explosions!

If Samsung has yet to disclose the results of its investigation into the cause of the Galaxy Note 7 explosions that ended the sale of the smartphone, an engineering company also conducted its own study.

It has now been two months since the Galaxy Note 7 was removed from the sale, soon after its release. While it was initially thought that Samsung's philette was subject to untimely explosions due to poorly designed batteries, the theory was ultimately rejected when, after switching suppliers, new smartphones were subjected to the same problem. After reminding all Note 7 around the world, Samsung finally launched an internal investigation to find out the causes of these accidents. If the results of this survey could be unveiled by the end of the month, another company, Instrumental, also studied the problems related to these incidents.

According to the engineering firm, it would not be the batteries that would be directly involved but the very design of the Galaxy Note 7. The battery would indeed be subjected to too much pressure inside the chassis of the smartphone. "When the battery is charged and discharged, the chemical process causes the lithium to move and the battery will swell mechanically. Any battery engineer will tell you that it is necessary to keep a percentage of vacuum above the battery. 10% is an estimate, but little by little the battery will take that place, "says Anna Shedletsky, CEO of Instrumental. However, according to her, Samsung had not provided enough space to allow the battery to inflate: "Our two-month old copy had no vacuum. The battery was 5.2 mm thick in a space of 5.2 mm. There should have been a vacuum of 0.5 mm ". However, if the battery can not swell, the positive and negative layers of the battery can come in contact, causing excessive heat and potentially explosions.

Samsung on its side has still not revealed the results of its internal study. According to the Korea Herald newspaper, they should be unveiled publicly by the end of the year. They should especially allow the Korean giant not to repeat the same mistakes for his next high-end smartphone, the Galaxy S8 expected early next year.