Do fast chargers charge ordinary mobile phones fast?adjustable power adapter

　　In reality, there are still many factors that determine the power consumption speed of a mobile phone, such as signal strength, positioning switch, the number of background programs, etc., and even the ambient temperature will affect the power consumption. Therefore, although the conversion rate of fast charging is indeed higher than that of standard charging. , but this high level is only relative.

　　Let's talk about fast charging technology. There are two kinds of fast charging technology that can really be called technology. One is flash charging technology and the other is Qualcomm's QuickCharge2.0 technology. Both technologies require chargers and mobile phone hardware. Combination can be achieved, lack of one will affect the effect.

　　Let's talk about flash charging technology first. One is segmented charging current control, and the other is a multi-line setup for charging cables and batteries. To put it simply, in fact, when the battery power of the mobile phone is low, a larger current is used for charging. As the charging voltage increases, the charging current is gradually reduced. This is the so-called segmented charging current control.

　　In addition, the charging cable line of flash charging is expanded from ordinary 4-pin or 5-pin to 7-pin, mainly to solve the problem of excessive loss of high current in the transmission line, and the contacts of the battery are also increased accordingly, and adopt Certain current sharing measures are adopted, which is also to solve the problem of battery heating under high current.

　　Its biggest advantage is that the battery has also been adjusted accordingly, which can reduce the heat generation of the battery and the entire system. The second advantage is the reliability design, but this is not a key technology, and we will not elaborate on this. The third is fast speed, especially in the middle and late stages, flash charging is indeed the fastest in fast charging.

　　However, it is not perfect to have no shortcomings. On the contrary, flash charging has a fatal disadvantage, which is its compatibility with other Android mobile phone charging. Its adapters, charging cables, batteries, and mobile phone side circuits are all their own technology, resulting in This technique is difficult

　　to promote.

　　In addition, it may also affect the experience of your own mobile phone users, because the essence of flash charging is concentrated on the charger, so once you go out and forget to bring the charger, the charging efficiency will be greatly reduced, and this situation is actually very easy to happen. . On the other hand, if you use the flash charger to charge other mobile phones, because the mobile phone has no corresponding adaptation, the charging effect is only equivalent to high-current charging, and the effect will not be as good as that of mobile phones that are compatible with flash charging.

　　Let's talk about Qualcomm's Quick Charge 2.0 technology. Its core technology is to reduce the charging current by increasing the charging voltage, thereby reducing the power consumption on the charging line. There will be a corresponding step-down circuit on the mobile phone side, which will reduce the high voltage and low voltage. The flow is transformed into a low pressure high flow. Therefore, in essence, flash charging and Quick Charge 2.0 are the same, both by supplying a large charging current to the mobile phone battery in the early stage of the battery, and gradually reducing the charging current as the battery voltage increases.

　　In terms of advantages and disadvantages, the biggest advantage of Quick Charge 2.0 is that its technical compatibility and inheritance are relatively good. Its external interface adopts the universal USB standard, so there is no need to buy special cables. However, mobile phones without fast charging function use Quick Charge. When using a 2.0 charger, it is charged in the usual way.

　　Its disadvantage is that the side of the phone will generate more heat than the flash-charging phone, and the charging speed will be slightly slower. From a purely technical point of view, flash charging is actually better than Quick Charge 2.0, because it has made corresponding adjustments to all aspects of charging, but if you want to popularize it, it is unrealistic to look at the technology itself.

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