Samsung Galaxy Note 7
Samsung has developed tests on more than 200 thousand devices, where they analyze the components of the Smartphone such as water resistance, fast charging, the wireless charging, the scanner of the iris, the software and the USB Type-C.
None of these internal tests showed any abnormality. Then analyzed in detail the production process and asked for the help of the UL, the Exponent and the TUV Rheinland AG.
See also: Samsung Galaxy S8, and Galaxy S8 Plus as never seen
With the course of the investigation, it was concluded that the first battery had a failure in the upper corners,more specifically, in the upper right corner
The electrodes, positive and negative are separated by a protective layer. If this layer is damaged, the encounter of the electrodes can cause a short circuit,that proved to be one of the problems of the second batch.
The batteries that were reset were affected by the high bar weld formed during the welding process ultrasonic to fasten the flap positive.
These bars welding penetrated the insulation tape and the separator, entering in direct contact with the negative electrode. In addition to these reasons, it was found that a large number of batteries had a tape of isolation.
The companies electronic also showed the same conclusions, the same abnormalities in the same areas.
THE UL also reaffirms that the main consequence of the overheating were the deformities in the upper corners of the battery,as well as a tab to the thin battery inside.
After the Companies electronic as well as Samsung have announced finally the reasons behind the overheating of the Note 7, the security team of Korea also presented the results of their research, conducted in parallel with the Samsung, hence this article!
The research team of the government has identified two different reasons: the excessive pressure created by the casing of the battery and the lack of insulation tape as a result of a manufacturing error(for batteries from Amperex Technology).
since they were all in agreement, both the companies electronic as the Samsung. The government has not identified any problems with the remaining elements of the smartphone, so that you do not intend to apply any penalties. In this way, and in an official way, ends the story of the Samsung Galaxy Note 7.
I Hope that this article has been as enriching for you as it was for me. Who would have thought that designing a smartphone was fairly complex, in addition to the specifications, performance, design to which we are accustomed to refer to. The construction was critical, and it is difficult to reconcile all of these components.
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