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(Beijing time January 23, 2017 news) Today, Samsung Electronics held a press conference in Seoul, South Korea, which issued the final findings for the reasons for the frequent explosion of Samsung’s flagship handset, the Note 7 battery. Samsung Electronics Co., Ltd The three agencies conducted investigations on the Note 7 explosion.
Samsung Electronics Wireless Division President DJ Koh
Battery issue is the main reason for Note 7 explosion
At today’s press conference, Samsung Electronics’ Wireless Business Unit’s Kao Dongzheng (Korean translation) on behalf of Samsung’s apologized to consumers and companies at home and abroad for consuming this, and Co-manufacturers and companies, Gao Dongzheng said: “The Samsung Note 7 bombing gave consumers , communications companies and companies that have cooperated have expressed their sincerest apologies for the loss."
Samsung Note 7 battery explosion
To this end, the relevant person in charge of Samsung Electronics said: "From the results of the investigation, the main reason for the explosion of the Galaxy Note 7 is the battery." We are too eager to innovate and design, and set certain specifications and standards for the Galaxy Note 7 battery. , Which led to the problems in the design and manufacturing process of the battery. We couldn't find and handle it before the release of Note 7, and we apologize.
Excessive pursuit of design leads to oppression of the battery
At the press conference, the independent agencies and the Samsung Electronics Department after careful investigation, they said that we had used 20 machines and 30,000 batteries for large-scale testing. There were indeed many explosion scenarios. The test results showed that the whole machine Or the battery is evenly burned.
Samsung Note7 battery structure
Not only that, the person in charge also said that the A batteries and B batteries recalled for the first time exhibited different burning phenomena, among which the extrusion phenomenon occurred at the upper right corner of the A battery center, and the burning was caused by the negative plate being subjected to compression. Some related causes of the negative terminal also increase the chance of accidents. The B battery found that the copper foil melting phenomenon, so we identified as the root cause of the main is the excessive burr produced in the welding process to break through the insulating film, contact the negative lead to short circuit, but some batteries do not have insulating film.
Battery A
Battery B
Therefore, we came to the conclusion that Samsung has set specifications and standards for the Note7 battery in order to over-pursue the design. Prior to the release of Note7, we did not conduct in-depth investigation of the invisible issues in battery manufacturing and process, resulting in the ultimate Note7 explosion event.
Samsung Electronics added 8 battery safety inspections
Samsung Note 7's battery capacity increased to 3500 mAh. Battery manufacturers also made new attempts in design and manufacturing processes. As a result, the battery design and manufacturing problems could not be finally confirmed. For this reason, Samsung Electronics at the conference While apologizing, it also announced the latest addition of eight battery safety inspections, including safety inspection, battery appearance inspection, X-ray inspection, battery dismantling inspection, TVOC inspection, ΔOCV measurement, charge and discharge inspection, and user usage scenarios. Under the security check.
Samsung Note 7 explosion battery investigation
Samsung also adopted the "Multilayer Security Measures Agreement" at the product planning stage. It will implement strict security inspection standards for each part of the equipment, including hardware strength and size, new software algorithms, overall design and materials used, and so on. At the same time, a series of enhanced safety measures have been made in terms of battery charging temperature, charging current, and charging duration.
Note 7 Full recall to make up for the "apology" owed by Samsung
Baidu VR community (micro-signal: BDVRbbs) through Samsung's official news, the current Galaxy Note 7 mobile phone has more than 96% global recall, according to statistics, Samsung Galaxy Note 7 total release 4.3 million units, as of now has recalled 4 million units Not only that, users currently holding Samsung Note 7 can still handle returns at Samsung's after-sales service center, and at the same time refunding purchases of other Samsung smartphone products can earn 300 yuan to develop e-commerce shopping vouchers.
Samsung Note 7 recall policy details
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