Samsung's decision to recall the Galaxy Note 7 is due to its defect battery κατά κύριο λόγο. Έτσι η εταιρεία προκειμένου να προστατέψει τους πελάτες της αποφάσισε κάτι που σίγουρα θα έχει σημαντικές επιπτώσεις για την ίδια την εταιρεία, για τους πάροχους αλλά και τους λιανοπωλητές που έχουν αναλάβει την πώληση του smartphone.
Samsung took the decision to revoke the Galaxy Note 7 smartphones, after 35 battery eruptions in 2 million unit sales. The batteries reportedly exploded when charging with genuine Samsung chargers.
Why
Ο JerryRigEverything ανέβασε ένα βίντεο στο youtube in which he troubleshoots a Galaxy Note 7 and shows why the battery can potentially explode. The video also shows the battery catching fire in a controlled environment.
The Samsung Galaxy Note 7 comes with a rechargeable lithium-ion battery. Companies that use these batteries have three characteristics security called failsafes. The first is on the device's original charger.
The charging port is the second of them as it can protect the phone and battery from a bad electrical flow and a faulty charger. The third is in the battery itself which has its own failsafe, a circuit protectionς στο πάνω μέρος ελέγχει τη ροή του ηλεκτρικού ρεύματος και τη temperature of lithium. So the battery is not overcharged to cause the lithium to overheat.
Οι εικόνες από τις Appliances που έχουν πάρει φωτιά εμφανίζουν ποια failsafe δεν κατάφεραν να κάνουν σωστά τη δουλειά τους και την προστασία της μπαταρίας.
There are no burn marks near the charging port or connecting to it mother plaque. The burning occurs where the battery sits, which means the connections are good, but the battery itself is not behaving properly.
So the battery could contain small metallic impurities that could cause ignition with overcharging. The following video shows that the problem might actually be in the circuit at the top of the battery. Charging starts normally, but the voltage regulator does not do the job.