Mobile phone fast charging may become standard

I believe many users have had this question, that is, is fast charging technology related to mobile phones or chargers? As a complete set of technical processes, "fast charging" cannot actually be completed independently by mobile phones or chargers. In the first process, it requires the coordination and cooperation of the power management chip built into the mobile phone, the charging cable and the charger to realize this technology.

Therefore, for mobile phones that do not support fast charging, fast charging cannot be completed even if a "charger that supports fast charging" is used. On the other hand, even if your mobile phone supports fast charging, but it is not equipped with a corresponding fast charging charger, fast charging will not be possible.

Different fast charging solutions

In fact, the common fast charging solutions we currently have on the market include the following: OPPO VOOC flash charging, Huawei's Super Charge, Qualcomm's QC fast charging, and USB PD, which is widely used in various digital devices. Although there are so many types of fast charging, they can be roughly divided into two categories: one is a high-current solution and the other is a high-voltage solution.

Among them, OPPO’s VOOC flash charging and Huawei’s Super Charge fast charging adopt high-current solutions. Take OPPO's VOOC flash charging as an example. It implements high-current charging technology through a dedicated low-voltage high-current charger, 7-pin contacts, and an 8-touch battery. VOOC fast charging technology also puts the voltage reduction and heating at one end of the transformer. The mobile phone loses one step in the process of voltage reduction and heating. Charging is fast and the phone does not get hot. However, the cost is higher due to the need for special chargers and wires.

Another high-voltage solution: including Qualcomm's current QC 4.0 fast charging and PD fast charging, etc., this type of solution speeds up the charging of mobile phones through high voltage and low current. Taking QC 4.0 as an example, the adapter can adjust the voltage with a more intelligent algorithm, so that the mobile phone can obtain just the right voltage at different charging stages to achieve the expected charging current, minimizing power loss.

Judging from the current development direction of fast charging, high current is more popular with users because it generates less heat and is faster during charging. Other fast charging methods are also improving in the direction of high current. However, if high-current solutions want to be popularized, unified standards are still something that has to be solved.