Wednesday, December 7, 2016

Aggressive design Note 7 caused explosions – ZDNet.be

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The first problems with Samsung Note 7′s became known in september. Several owners of the smartphone have reported that their device spontaneously burst into flames and was gone. Samsung knows the problem, bad batteries, called the smartphones back and provided them a new battery. This action was, however, not income: Note 7 continued to explode. There was, for Samsung on its latest smartphone, for the good of the market.

Samsung has promised for the end of the year to provide an explanation for the problems with its Note 7. Instrumental, however, has not waited until the company with an explanation on the come up and has managed a copy of the Note 7 and get your hands on. With a fire extinguisher in the attack, the company has the smartphone, little by little, it decomposes, and it is a declaration of impacts for the explosions.

Tight space

If you have a Note 7 opening, you will see that there is an aluminum housing around the 3,500 mAh battery is placed. This frame prevents the battery against the printed circuit boards and other internal components can collide. Such a housing will cost extra money and points out that Samsung has tried to get the battery secure.

This attempt is, however, negated when you check how much room is inside the aluminum frame. Along all sides of the battery there is less than a half a millimeter left open. At the top of the battery even less than 0.1 millimeter to about. At the least druktoename the battery against the edges of his enclosure collide, the battery is being compressed.

lithium ion battery

Short circuit

A lithium ion battery consists of a positive low of lithiumkobaltoxide, a negative layer of graphite, and two electrolytes with a separation of polymer between them. The separation ensures that ions between the positive and negative layers can flow without these layers touch each other. If the positive and negative layers to each other would hit, there would be energy directly into the electrolyte to flow, which heats up and can explode.

Samsung has a very thin possible smartphone to offer without autonomy, sacrificing. This is the separation between the electrolytes in the battery are very thin. At the least compression of the battery, the separation will no longer function properly and the battery may explode.

Bloat

The pressure on the battery can be fatal to grow because you sit down with a Note 7 in your pocket. By the aggressive design of the device should, however, there is no external pressure on the battery to be exercised. When batteries are charged and discharged, the chemical process that lithium migrates and the battery swelling. Batterijingenieurs use, therefore, as a rule of thumb that a battery of at least ten percent free space is needed. The battery in the Note 7 is only 5.2 millimeters thick, and would therefore be 0.5 millimeter groeiruimte should have. However, this is not the case.

"If the Galaxy Note 7 was not recalled for exploding batteries, the smartphone silently to from each other to be pushed by the swelling of the battery," suspect Instrumental. "A smaller battery with the standard fabricatieparameters would solve the problem. This would make the autonomy, however, is lower than that of the Note 5 and iPhone 7 Plus."

note 7

Source: Instrumental

Innovation

The smartphone market is a very competitive world, where manufacturers constantly try to push the limits. The Note 7 was globally acclaimed as a good and innovative smartphone. Samsung could this innovation, however, can only achieve by basisveiligheidsregels is astounding.

In this case, Samsung has a high price to pay for its attempt at innovation. This problem had, however, been just as good with any other manufacturer that may appear. Smartphones the past few years becoming thinner, faster and become more powerful. This makes it difficult for smartphonemakers to major innovations to bring to their devices. Most likely, Samsung is not the only manufacturer to have the edges of to walk to in the fray stay afloat.

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