Shulou(Shulou.com)11/24 Report--

Thanks to CTOnews.com netizens Deepsea Heart, YMM, July Liuhuo, the last candlelight, Voldemort Sage, Heisen_berg, Stars Forever, I am a pig, Pianke Sao Huang 4100 eyes of clues delivery! CTOnews.com February 28 news, Xiaomi today released 300W fairy second charging technology. In 300W wired charging mode, it takes only 5 minutes to charge the Redmi Note 12 exploration version of the 4100mAh battery, and it takes 43 seconds to charge 10%, 2 minutes, 13 seconds, 50%, and 5 minutes to fully charge 100%.

It is worth mentioning that this set of "magic modification" involves the charging end of the charger, the charging structure of the mobile phone and the whole structure of the battery, so ordinary users do not have to consider trying for the time being.

According to the measured data given by Xiaomi officially, its peak power can reach 290W, and the power of more than 280 watts can be maintained for 2 minutes and the phone can be charged to 50%.

According to reports, Xiaomi uses the full-link self-developed 300W fast charging architecture, in the original charging architecture uses a customized 6:2 charge pump chip, the highest conversion efficiency of the chip is as high as 98%. Compared with the conventional 4:2 charge pump scheme, the problem of large current heating in the charging input path is solved, and the charging temperature rise is reduced from the source.

At the same time, a number of charge pumps adopt decentralized layout, which can effectively avoid heating concentration and prolong the high power charging time.

It is worth mentioning that the 300-watt fairy second charge is based on a double-series battery design, and the input current of the cell is up to 30A, which requires an ultra-high charging rate of 15C. Therefore, Xiaomi introduces a new type of hard carbon material into mobile phone battery, which has a looser and disordered structure than graphite, which can provide a looser reaction path for lithium ion.

In addition, under the measures of new process process and process optimization, the thickness of positive and negative plates has also been greatly reduced, which is further reduced by 35% compared with conventional plates. At the same time, through the introduction of new lithium salt additives and core solvent ratio modulation, the ultra-high conductivity electrolyte can effectively increase the lithium ion migration rate and reduce the charging temperature rise.

In terms of structure, they adopt a "sandwich" stacking scheme which is different from the conventional double-cell side-by-side stacking scheme to achieve stronger heat dissipation and higher space utilization, and the matching battery PCM protection board is also a double-layer design, which can effectively reduce the space occupation of the protection board by 50%.

In terms of chargers, the 300W charger also ushered in a transformational upgrade, which uses the fourth-generation GaN integrated scheme with high power, small size, low heating and higher efficiency. The planar transformer adopts a more integrated modular design to further compress the occupied space of the device.

In terms of heat dissipation, the 300-watt charger not only adds a large area of graphene-assisted heat dissipation and double heat dissipation, but also achieves ultra-high power output. Xiaomi said that in the case of a 43% increase in power, its volume is exactly the same as Xiaomi's previous-generation 210W charger, with a power density of 2.31W / cm ³.

It is not clear when the muscle show will be available for commercial use, and CTOnews.com will keep an eye on it.

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