samsung says note 7 battery design, manufacturing caused fires - lithium battery suppliers

Seoul, Korea--
Samsung Electronics
Said the Galaxy Note 7 smartphone battery design and manufacturing problems caused the battery to overheat and fire.
The company on Monday announced a survey of its worst product, fiascos, which stopped production three months ago.
Recall of the world's largest smartphone maker
5 million Note 7 on September, after reporting that they had overheated and caught fire.
It blamed lithium batteries from suppliers.
Popular news Google cloud downtime missing connadik state mom Virginia Beach shooting protesters also caught fire with a different battery to interrupt Harris's new Note 7 s.
As a result, Samsung permanently abandoned the high-end phone in October.
It estimates that these problems will cost at least $5.
3 billion through early 2017.
Samsung was furious at the handling of the recall and the hasty, apparently incomplete preliminary investigation into the issue.
Samsung has announced stricter quality control and stricter testing, and is responsible for failure to ensure that the design specifications provided to its suppliers are fault safety.
The South Korean company also postponed the launch of the next Galaxy S8 phone, which is usually released in February.
While praising Samsung for its frankness and apology, analysts questioned whether the world's largest smartphone maker was really blaming defects in battery design and production for having figured out the truth about the problem.
"Samsung said these weaknesses could make it easy for phones to catch fire.
I understand, but what triggered the fire in this case?
Did they discuss if there were any other reasons?
No, "said Park Chul Wan, former director of the National next-generation battery research center --
Korea Institute of Electronic Technology.
Frank Gillett, analyst at Samsung Galaxy Note 7 s Forrester, said the company's focus appeared to be on detecting problems in manufacturing, rather than preventing design problems in advance.
He said the company needs to find ways to prevent business stress, such as quickly taking out the phone and letting engineers make the wrong decision.
Samsung's Note 7 is partly designed to beat Apple's iPhone 7 in a few weeks.
Ramon Lamas, an analyst at IDC Research, said he wants to see Samsung show more "human nature" in solving problems ", and say what it is doing to work with consumers affected by this.
During a two-
The one-hour press conference was broadcast live in English, Chinese and Korean. Samsung said tests involving more than 200,000 mobile phones and 30,000 batteries showed that the two batteries used in Note 7 had different problems.
Despite speculation by some experts, the phone's
Thin design or water-
Samsung said the survey did not find such a problem, and the resistance function may make them prone to overheating.
Samsung also ruled out software or design for other mobile phone hardware and supply chains.
Note 7 is one of the largest battery capacity for smartphones, but Samsung says the company and external inspectors have found no evidence that just high energy density is the culprit.
Samsung introduced Note 7 in August.
Two weeks later, it was reported that the phone had overheated and exploded in some cases, recalling the first group.
After the replacement phones also started to catch fire, the aviation authorities banned them from boarding the plane, and the company permanently abandoned the product.
After the first recall, Samsung received a complaint that failed to resolve the problem and invited three private inspectors to help.
The inspector found a battery crash made by a manufacturer damaged
Samsung SDI-probably a sister company
And used in the initial batch of Note 7 s.
Samsung said it combined with too thin partitions and high energy density, causing the phone to overheat. The cell-
The bag design of the battery also does not have enough space to safely accommodate its electrodes-another flaw.
In other batches of batteries from the second manufacturer, it's probably China-
ATL-based researchers have found that some batteries have welding defects and lack of protective tape to replace recalled smartphones.
Patrick Moorhead, president of Moor Insights & Strategy, said that the chances of two different vendors having problems on the same phone are very low.
This situation "may indicate that we may have reached an inflection point in smartphone battery technology," Moorhead said ".
Although Samsung has failed its supplier's battery, it says it will bear all costs.
It is not clear to what extent battery manufacturers are responsible, as Samsung only says it provides "targets" such as capacity and thickness ".
This may indicate a failure in communication between Samsung and its suppliers and in quality control and testing.
Note 7 is not the only gadget that caught fire because of a lithium battery problem.
Manufacturers like this battery because they have less weight than other batteries and more energy stored in the same space.
However, they are also more prone to overheating if they are exposed to high temperatures, damaged or have manufacturing defects. Koh Dong-
Kim, president of Samsung's mobile division, said Samsung will use information learned from the survey to improve the safety of lithium batteries in the industry.
To avoid further problems, Samsung said it would launch an 8-
Carry out point battery safety check through more intense durability test;
New test and charge and discharge test for accelerated use.
The company said that stricter safety measures will be implemented in "every part of the company's equipment", including materials designed and used as a whole.
Samsung said it would also seek advice from a group of battery experts on battery safety and innovation.
The company has recalled 3.
6 million Note 7 phone.
About 4% or 120,000 of the recalled Galaxy Note 7 s have not yet been returned.