Posted on 12/05/2016 3:44:55 PM PST by Swordmaker
Match book covers have fixed more sloppy fit stuff wtf
Engineering tear down of Samsung Galaxy Note 7 discover’s the Samsung design FLAW that explains why so many of this design phone overheated and/or caught fire and exploded.
These Lithium Ion batteries require a certain amount of expansion relief around them but Samsung did not allow any at all! This forced the battery to compress itself internally, damaging the layers so they would short together. Very bad engineering.
Ping for your lists. . .
Ooops.
So much for upgrading replacement batteries for more power.
Look at all the iphones that turn into roman candles as well
but the media refuses to report the truth
It breaks such a basic rule, it must have been intentional, says the Instrumental team
...
Sounds to me like something a committee of managers would do, overruling (or more likely, coercing) the engineers.
So, can we get our loser fitting replaceable batteries back? The note 4 was pretty much the perfect phone in this regard.
Too many quarks packed into batteries these daze.
I am looking forward to the slightly thicker Note 8!
Can this guy explain why Samsung washing machines explode?
Amen!
because you lie, and there is no truth to your specious claim. An expected number of Lithium Ion batters of one in 10 million to 12 million per year will fail by overheating or catching fire no matter what make or design of lithium ion battery is used. That is the expected failure rate. If there are 1,100,000,000 iOS devices in the wild, as are now reported, then an expected 92 to 110 iOS devices will fail every year, or 8 to 9 per month. That is no where nearly the 3,000 times the normal expected rate for Lithium Ion batteries that the Samsung Note 7 had been evincing. You've been told this several times before and you continue to repeat your false claims with a lack of any evidence that shows anything approaching anything about rates of unusual fires with iPhones.
That's why there are no reports in the media. If there were even an inkling of truth to your claims, the media would be all over this like they are over anything about Apple that would generate any advertising clicks. Since there is no evidence for your claims, there isn't enough to do even that, except in your delusions.
'Tis a possibility.
Sounds like the article was written by a Millennial for a Millennial audience.
Not much engineering analysis behind this ‘teardown’.
I think they are selling it. I keep seeing ads for it everywhere.
It's the biggest scam in the cell phone industry. I know damn well there's gotta be a way to have a continuous charge on a phone. If we can put a man on the moon.... < /Old guy voice >
Bad lobbyists.
Footnote: When batteries are charged and discharged, chemical processes cause the lithium to migrate and the battery will mechanically swell. Any battery engineer will tell you that its necessary to leave some percentage of ceiling above the battery, 10% is a rough rule-of-thumb, and over time the battery will expand into that space. Our two-month old unit had no ceiling: the battery and adhesive was 5.2 mm thick, resting in a 5.2 mm deep pocket. There should have been a 0.5 mm ceiling. This is what mechanical engineers call line-to-line -- and since it breaks such a basic rule, it must have been intentional. It is even possible that our unit was under pressure when we opened it.
Swordmaker
Your claim of 1 in 10 or 12 million means 0.1 dppm to 0.083 dppm.
That is an unachievable dppm, in particular for a phone which is a large number of components.
As a chip designer specifically for Apple iphones/ipads and many other customers over 21 years, I and the companies I worked for don’t guarantee a dppm that low.
I would say a dppm of 200 is achievable at the system level, which means 1 failure out of 5000. That 1 failure can be anything, battery or otherwise, that can shut down the phone without the user doing something. Maybe Apple is better than 200. I think that if they are achieving 50, they’re world class. But I doubt it.
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