Sun Changxu, chief analyst of International E-Commerce, said: "There will be several major changes in the mobile phone battery market next year, one of which is that everyone has talked about fast charging for many years. Next year, there will be more commercial products, which can be charged to about 80% of the power in a very short time.".

In the figure above, the blue line is the charging process of ordinary charging technology: 0-30 minute charging is approximately a linear process, that is, the charging rate is proportional to the time; But the red line is a new fast charging mode. It is obvious that this mode of charging mainly focuses on the first five minutes, that is, charging as much electricity as possible in the first five minutes. In a sense, this is the real embodiment of "fast charging".

With fast charging, about 70% of the power can be fully charged in the first five minutes. So someone will ask, why is 70%, and can't the next 30% be charged fast? The last 20% involves overvoltage protection, which requires trickle charging, but there are ways to speed it up. Fast charging has been used in many places for a long time, but for smart phones, it requires the innovation of battery materials, depending on whether it can be charged with 1C or even 2C. Existing mobile phone batteries can only be charged with 0.5C. It is said that 1-1.7C charging can be used for fast charging next year. Now several home appliance manufacturers, including those in China, are already doing it. I believe they will meet you soon.

In the field of fast charging, the fast charging of electric vehicles is the most widely used. The above figure is the schematic diagram of its charging process. The upper part is the ordinary charging mode, and the lower part is the fast charging mode. During the use of ordinary chargers, for the sake of grid stability and other aspects, a set of transformer equipment is also required; However, in the fast charging mode, the charger contains a set of batteries as an intermediary, which can buffer the high voltage and high power required in the charging process, thus eliminating the voltage transformation link, which can save about 40% of the overall fast charging equipment, including supporting equipment and installation costs.

If the feasibility and stability of this technology are recognized by the market, the future is limitless: on the one hand, the charging speed is far superior to the existing technology; On the other hand, the price is only 60% of the current technology. If this ultra fast charging technology can be popularized, it can almost completely solve the problem of "too long charging time".