Samsung SDI abandons 20,000 mAh silicon-carbon batteries in favor of cells with 6,000-8,000 mAh capacity to ensure stability and safety.
Samsung has shown a cautious attitude in the energy technology sector since the critical issues encountered with the Galaxy Note 7 model in 2016 and this conservative approach currently generates disadvantages compared to Chinese manufacturers who regularly adopt silicon-carbon batteries of large dimensions in their phones through constant and aggressive initiatives. Samsung SDI faces obstacles in its attempt to establish a relevant presence in this market through the development of high-capacity solutions necessary for global competition, which leads the company to a complete review of the industrial strategies planned for the premium segment.
The tests carried out recently highlight how the 20,000 mAh double cell battery presents insurmountable limits during the rapid charging phases at a speed of 100W, since the 12,000 mAh main cell shows a bulge which increases the thickness from 6.3 millimeters up to a critical dimension of 8.2 mm during the tests carried out in the laboratories. The overall thickness of the module reaches 14 mm and compromises the feasibility of the project intended for future devices since the measurement almost equals the size of the external casing of the cells themselves, a situation that makes integration into the thin frames of smartphones practically impossible.
Samsung initially intended to create a 12,000 mAh single cell battery to optimize overall system efficiency through orders of magnitude greater densities, but configurations with more cells require better isolation to avoid the risk of dangerous short circuits during normal operation of high-performance ICs. Stabilizing high energy densities is complex and leads to constant performance degradation during intense use cycles in the experimental phases, highlighting limitations that require further years of research and development before possible large-scale commercialization.
Samsung SDI therefore chooses to direct your resources towards the design of 6,000-8,000 mAh silicon-carbon batteries characterized by more modest purposes, as the components ensure optimized performance consistency and show predictable volumetric expansion parameters in the first laboratory tests carried out by the specialized unit of the tech giant. At the same time, the company continues the development of solid state batteries to maintain competitiveness in the global technological landscape, in an effort to balance security with the performance required by end users in the consumer electronics market.
The technology Si-C it differs from traditional lithium ion systems thanks to the use of an anode in nanostructured composite material resistant to accidental fracture, and this solution allows it to contain a quantity of lithium ions ten times higher than the common graphite usually used in the global production sector. The thin design of the components provides an increase in power capacity by orders of magnitude without compromising the overall form factor of smartphones, although current market dynamics dictate Samsung a radical overhaul of industrial priorities to close the gap with Chinese OEMs leading the advanced battery sector.
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