It is not a new thing for major mobile phone manufacturers not to give away chargers. What is even more outrageous is that after this, manufacturers have continuously upgraded their own fast charging functions and launched a variety of fast charging chargers.
We are talking about upgrading the new technology, but I don't want to give you ha for free.
Apple: Unexpected, right? 丨ZenXgaming100/Reddit
Is it quick to fill the incense? Incense, is true incense. From "charging for 5 minutes and talking for 2 hours" in a specific environment, to now everyone can use a few minutes to fill half the electricity, fast charging is really practical. Even if you get up in the morning and find that your phone is not charged, plugging in the charger to brush your teeth can also charge a large part. You don't have to go out with "battery anxiety"!
Fast charging is good, but you have to pay no attention, you may buy a fast charge back, the charging effect is still "5 volts 1 amp"... Want to buy a reliable fast charge, but it is not so simple: what is a gallium nitride charger? Two bites of three or four mouthfuls, how many bites do I want to buy? What is the PD and QC protocol?
The purchase here will enter the cycle: the old charger is getting more and more difficult to use - open the shopping app - look at it for a long time and don't know which one to buy - the phone looks out of power - turn off the screen and continue to charge with 5 volts 1 amp... Xiao Li CP will be anxious for you when he sees it.
Want to buy fast charge
Do you have to choose gallium nitride?
The essence of the charging head is to convert the mains 220V AC into low-voltage DIRECT CURRENT. Between output and input, there is the world of semiconductor devices. Gallium nitride is one of them.
The difference between a slow charger and a fast charge is the charging power. After the development of battery technology to match the corresponding charging power, the design of the charging head itself has become the focus of fast charging. The process of power conversion between the square inches of the charging head needs to be completed by means of a semiconductor switch. If you want to transmit electricity well, high-speed switches are indispensable. However, the resulting severe heat has become a design problem. If you can choose a semiconductor material with fast switching speed, small heat generation, and high temperature resistance as a switch, can you not be assured to boldly increase the charging power?
Gallium nitride: Isn't that what I'm talking about?
Whose DNA moved? Oh! It's myself 丨 powerelectronicsnews
Gallium nitride is currently being hyped, thanks to its own contention. It is one of the typical wide bandgap semiconductor materials, and it is "natural beauty" to say. The material's own properties and its special conductive method determine the characteristics of semiconductor switches made of it: fast switching speed, small heat generation, and high temperature resistance. This is simply the perfect resume given according to the recruitment needs.
Replacing the traditional silicon switch with a gallium nitride switch can not only bring higher charging efficiency and lower heat generation to the charger, but also reduce the heat dissipation requirements with high temperature resistance, which makes the charger "smaller and more beautiful".
Than small also small 丨 author courtesy of the picture
Of course, the use of traditional silicon devices is not impossible to do fast charging, charging power is not unable to be high. For example, Huawei has used 66-watt fast charging in previous flagship machines. But later Huawei also launched a smaller gallium nitride 66-watt fast charge. For fast charging, gallium nitride is indeed the trend. If you want to buy a real fast charge, you can basically make no mistake with gallium nitride at the moment.
However, the disadvantage of this new thing is that it is expensive. Gallium nitride is more difficult than silicon devices in terms of process technology, and the price of the device is high, resulting in a high price of the finished charger. The same is the 66-watt super fast charge, Huawei's Gallium Nitride charger is 100 yuan more expensive than the ordinary. The price of non-original high-power gallium nitride charging head is also mostly in the three digits...
However, when you decide to buy a Gallium Nitride charger, you will find that this indicator is just the beginning of the purchase...
Single mouth, double mouth, three mouth...
The more interfaces the better?
The charger is getting smaller and smaller, but the charging port is increasing. What is there to hesitate about, of course, the more mouths the richer the functions, the better the charging head... Do you?
Math Teacher: How many combinations of three mouths are used? 丨 Courtesy of the author
If you look closely at the markings on the charging head, you will see that things are not so simple - first, their charging ports are different in shape. The charging cable interfaces of each device are different, so the manufacturer takes into account the universal use of multiple devices and equips you with multiple interfaces on a charger.
General multi-port chargers will be equipped with USB and Type-C interfaces, but strictly speaking, they are all USB interfaces.
What we say about USB in daily life generally refers to Type-A, that is, a large square interface. Type-C is the small flat mouth that has been in the limelight in recent years.
In addition, the output of different mouth combinations is not necessarily full of blood and fast charge. For this kind of 65-watt charger with a USB (Type-A) plus two Type-C ports, the output of each port is less than 65 watts when used in combination, and the total power is about 65 watts. After all, if the multi-port charger is output at the maximum power, the heat is still very uncomfortable. Therefore, the manufacturer will design a nominal power, such as a 65-watt charger, the overall maximum output power will not exceed 66 watts.
In this case, USB seems to always be the one that suffers the most: the multi-port charging head in the market, the charging power of USB is lower than type-C. This is because fast charging also has requirements for what wire to use. As a more advanced USB interface, Type-C itself has a higher flow capability. If you buy a multi-port charger and mainly use a USB port, it is likely to be used as a "residual blood" charger.
A fast charger manufacturer publicity map and parameters. Propaganda: Closed eyes blind plugs are fast charged. USB：？ Hello？ Look at me? What are you afraid of?
Therefore, from the perspective of maximum power, multi-port chargers cannot bring the charging effect of multiple single-port chargers. If you don't have many devices, there are not many scenes where multiple devices are charged at the same time, and you hope that you can "charge with full blood" when charging, it is enough to buy a single port. If there are multiple devices in life that need to be charged quickly at the same time, then select the number of output ports on demand.
And that's not all. The above charger single port is also marked with a lot of cases where the output power does not reach 60 watts, what is the matter? Have you figured out the protocol?
PD、QC...... The charger is not universal yet?
Unfortunately, some chargers are really not universal. It is very likely that you will grab a "fast charge" and find that the mobile phone is charged up with the effect of "five blessings and one security".
This again has to refer to the issue of agreement. Like the shape of the charging port, fast charging also has different protocols. The reason for the agreement is to blame everyone for pulling the charger (mistakenly)!
Since the advent of fast charging, there has been a problem: how does the charging head know what I want to charge? If you just connected an "ancient" small table lamp that does not support fast charging, the charger will be 66 watts directly to give, then it is not directly "bursting lights"?
The solution to this problem is to integrate a chip in the charging head, which sends a signal to "communicate" with the device, thereby identifying the nature of the charged object. After receiving the data, the charging head can be discharged on demand. If it is detected that it is an old mobile phone that does not support fast charging, then output Wufu Yi'an; if it is a mobile phone that can support fast charging, then it can be prepared to output the power of fast charging.
In this way, in order to facilitate the implementation of this function, major manufacturers have begun to form a somewhat unified, but not yet fully unified charging protocol. At present, it is mainly divided into two fast charging protocols, PD and QC. PD only supports type-C interface, and is also compatible with some QC protocols. QC previously supported usb interfaces, but the latest QC only supports Type-C interfaces. In addition to these two large protocol parts, some manufacturers will also have some proprietary protocols, and the protocol mismatch will make the fast charging head of some mobile phones unable to cross-use.
Isn't it a bit messy? Therefore, the most worry-free is the original fast charge. If you have to find a third-party charger, you first need to see if the charger supports the voltage and current required for mobile phone charging, and then look at whether the shape of the charging port matches. If both can match, then there is a high probability that it can be charged. For example, the author once used a colleague's Type-C Macbook charger to charge his Own Huawei mobile phone, but did not reach the maximum charging power, which is limited by the maximum output power of the charging head. Of course, some stores will also intimately mark the model that the charging head is suitable for, so that it is more convenient to choose.
At the moment when battery technology encounters bottlenecks, fast charging can indeed solve the problem of power anxiety from another angle.
Can't go back when you use it? It's true.
Author: Xiao Yuan
Editing: Window Knocking Rain, Owl
An AI
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