Sci/Tech WSJ: Samsung Note 7 investigation will blame ‘irregularly sized’ batteries and manufacturing flaws

tom_mai78101

The Helper Connoisseur / Ex-MineCraft Host
Staff member
Reaction score
1,667
An investigation into the cause of faulty batteries that led Samsung Electronics Co. to pull all of its Galaxy Note 7 smartphones last year found that some batteries were irregularly sized, causing overheating, while others had manufacturing problems, according to people familiar with the matter.

The conclusion, which will be unveiled by Samsung on Monday, helps to explain the technology giant’s product recall that damaged its brand and will end up costing the company at least $5 billion.

Samsung, the world’s largest smartphone maker by shipments, conducted the investigation with three quality-control and supply-chain analysis firms that it hired to help it in its independent investigation. Samsung recalled all of its 2.5 million Galaxy Note 7 smartphones last fall after consumer complaints that the phones caught fire, leading a U.S. regulator to ban the use of the device on airplanes.

The Galaxy Note 7, which Samsung began selling in August, carried batteries supplied either by Samsung SDI Co., an affiliate, or Hong Kong-based Amperex Technology Ltd., which produces them at a factory in China. Initially, Samsung officials believed the problem was confined to batteries made by the Samsung affiliate, and recalled those devices while ramping up production of smartphones carrying the Chinese batteries to replace the recalled phones.

But continued reports of overheating replacement phones forced Samsung to issue a second recall in early October, pulling the plug entirely on the premium devices.

Samsung’s report on Monday will conclude that the issue with the batteries from Samsung SDI was an irregularly sized battery that didn’t fit properly in the phone, according to the people, who said that the incongruence caused the overheating. In the Galaxy Note 7 phones carrying batteries made by ATL, the flaw centers on a manufacturing issue resulting from the quick ramp-up in production of replacement phones, these people said. It wasn’t clear what the manufacturing issues were.

ATL and Samsung SDI declined to comment.

During its third-quarter earnings announcement in October, Samsung SDI told investors that it would examine and update its processes for battery development, manufacturing and evaluation.

Samsung executives met with government officials in Washington, D.C., this week to discuss the findings, these people said. The officials responded positively to Samsung’s presentation.

To address regulators’ concerns about how Samsung would avoid any future battery problems, the company has created an eight-step process that includes more testing, inspections and manufacturing-quality assurances, among other measures, some of the people said.

Samsung’s internal Note 7 investigation team enlisted engineers and senior executives, according to some of the people. The outside firms hired to produce independent reviews were U.S.-based companies UL LLC and Exponent Inc., which examined the batteries, while a German firm, TUV Rheinland, analyzed supply-chain issues.

Samsung has said 96% of the Galaxy Note 7 phones in the U.S. have been returned. The U.S. Federal Aviation Administration earlier this month lifted the requirement that airlines warn passengers against bringing Galaxy Note 7 devices onto airplanes. Taking the device on an aircraft, however, remains prohibited.

Before the overheating issues surfaced, the Galaxy Note 7 had received largely positive reviews and was off to a strong start. While the recall has been costly, Samsung has been able to weather the impact thanks to booming sales of components such as semiconductors and display panels.

The company’s earnings report, due Tuesday, is set to show the biggest quarter of profits in more than three years.

The Suwon, South Korea-based firm is also grappling with a scandal back home. The conglomerate’s de factor leader, Lee Jae-yong, who is vice chairman of Samsung Electronics is facing allegations from prosecutors of bribery, embezzlement and perjury related to the nation’s influence-peddling scandal. He has denied any wrongdoing.

—Eun-Young Jeong in Seoul contributed to this article.

Source. (Wall Street Journal) (Requires subscription)
 
General chit-chat
Help Users
  • No one is chatting at the moment.
  • The Helper The Helper:
    The bots will show up as users online in the forum software but they do not show up in my stats tracking. I am sure there are bots in the stats but the way alot of the bots treat the site do not show up on the stats
  • Varine Varine:
    I want to build a filtration system for my 3d printer, and that shit is so much more complicated than I thought it would be
  • Varine Varine:
    Apparently ABS emits styrene particulates which can be like .2 micrometers, which idk if the VOC detectors I have can even catch that
  • Varine Varine:
    Anyway I need to get some of those sensors and two air pressure sensors installed before an after the filters, which I need to figure out how to calculate the necessary pressure for and I have yet to find anything that tells me how to actually do that, just the cfm ratings
  • Varine Varine:
    And then I have to set up an arduino board to read those sensors, which I also don't know very much about but I have a whole bunch of crash course things for that
  • Varine Varine:
    These sensors are also a lot more than I thought they would be. Like 5 to 10 each, idk why but I assumed they would be like 2 dollars
  • Varine Varine:
    Another issue I'm learning is that a lot of the air quality sensors don't work at very high ambient temperatures. I'm planning on heating this enclosure to like 60C or so, and that's the upper limit of their functionality
  • Varine Varine:
    Although I don't know if I need to actually actively heat it or just let the plate and hotend bring the ambient temp to whatever it will, but even then I need to figure out an exfiltration for hot air. I think I kind of know what to do but it's still fucking confusing
  • The Helper The Helper:
    Maybe you could find some of that information from AC tech - like how they detect freon and such
  • Varine Varine:
    That's mostly what I've been looking at
  • Varine Varine:
    I don't think I'm dealing with quite the same pressures though, at the very least its a significantly smaller system. For the time being I'm just going to put together a quick scrubby box though and hope it works good enough to not make my house toxic
  • Varine Varine:
    I mean I don't use this enough to pose any significant danger I don't think, but I would still rather not be throwing styrene all over the air
  • The Helper The Helper:
    New dessert added to recipes Southern Pecan Praline Cake https://www.thehelper.net/threads/recipe-southern-pecan-praline-cake.193555/
  • The Helper The Helper:
    Another bot invasion 493 members online most of them bots that do not show up on stats
  • Varine Varine:
    I'm looking at a solid 378 guests, but 3 members. Of which two are me and VSNES. The third is unlisted, which makes me think its a ghost.
    +1
  • The Helper The Helper:
    Some members choose invisibility mode
    +1
  • The Helper The Helper:
    I bitch about Xenforo sometimes but it really is full featured you just have to really know what you are doing to get the most out of it.
  • The Helper The Helper:
    It is just not easy to fix styles and customize but it definitely can be done
  • The Helper The Helper:
    I do know this - xenforo dropped the ball by not keeping the vbulletin reputation comments as a feature. The loss of the Reputation comments data when we switched to Xenforo really was the death knell for the site when it came to all the users that left. I know I missed it so much and I got way less interested in the site when that feature was gone and I run the site.
  • Blackveiled Blackveiled:
    People love rep, lol
    +1
  • The Helper The Helper:
    The recipe today is Sloppy Joe Casserole - one of my faves LOL https://www.thehelper.net/threads/sloppy-joe-casserole-with-manwich.193585/
  • The Helper The Helper:
    Decided to put up a healthier type recipe to mix it up - Honey Garlic Shrimp Stir-Fry https://www.thehelper.net/threads/recipe-honey-garlic-shrimp-stir-fry.193595/
  • The Helper The Helper:
    Here is another comfort food favorite - Million Dollar Casserole - https://www.thehelper.net/threads/recipe-million-dollar-casserole.193614/

      The Helper Discord

      Members online

      Affiliates

      Hive Workshop NUON Dome World Editor Tutorials

      Network Sponsors

      Apex Steel Pipe - Buys and sells Steel Pipe.
      Top