In this we are going yo give you a best imformation about phone charge faster. Have you ever had this experience: you are about to go out to do something, but you find that your phone is out of battery. You have to anxiously plug in the charging cable, and after a few seconds you glance at the slowly rising battery level. As a result, the phone is not charged much, but the work is delayed.
Fortunately, with the development of mobile phone fast charging technology, this embarrassment is gradually becoming history. This year, many mobile phone manufacturers have successively released new mobile phones with 120W fast charging, which has taken fast charging technology to a new level.
Charge 50% in 5 minutes, how powerful is mobile phone fast charging?
Mobile phone fast charging, as the name implies, is a technology that quickly charges mobile phones. When the battery power is constant, the higher the charging power, the shorter the time required to fully charge . Therefore, the charging power is an important indicator of fast charging technology.
In recent years, we have witnessed the charging power of mobile phones start from 5W, slowly develop to 18W, 44W, 55W, and then to the 120W fast charging that just appeared this year. The charging time has been reduced from three or four hours to the current twenty minutes. All these demonstrate the rapid development of fast charging technology.
At present, the fast charging power of domestic mobile phones has surpassed that of foreign brands such as Apple and Samsung. Since June this year, many domestic mobile phone manufacturers have successively released new mobile phones that support 120W fast charging. One of them can even charge the battery to 50% in 5 minutes and fully charge it in 13 minutes . In contrast, Apple mobile phones have been using 5W chargers for a long time, and the new products released this year have only increased the charging power to 20W.
Just by making a simple comparison, we can experience the impact of different charging technologies on charging time. For mobile phone batteries, the output voltage generally fluctuates between 3.7V and 4.2V. If the voltage is calculated as 4V and the battery capacity is calculated as 4000mA·h, then, under ideal conditions:
Using a 5W Apple phone charger, it takes 3 hours and 12 minutes to fully charge;
Using a 40W mobile charger that supports Quick Charge 2.0, it takes 24 minutes to fully charge;
With the new 120W fast charging phone, it only takes 8 minutes to fully charge.
It can be said that in terms of mobile phone fast charging technology, domestic mobile phones have taken the lead in the world.
Friends who read the article carefully may ask: This data does not match the charging time of several 120W fast-charging mobile phones, and there are some differences with our usual usage experience, so why is this the case? After understanding the principles of fast charging and the problems it faces, you will naturally find the answer.
How do you charge your phone quickly?
Middle school teachers taught us that P (power) = U (voltage) × I (current). So, to increase the charging power, we need to increase the charging voltage or charging current . The core of fast charging technology is to ensure that this is achieved safely and effectively.
If you look closely at the connector of a mobile phone charger, you can find a sign like “5V 1000mA” on it, which is the maximum charging voltage and current that the charger can provide to the mobile phone. The 120W fast charging charger generally adopts the “20V 6A” standard.
Increasing the charging voltage and current like this will of course bring various problems.
For example, excessive charging power will increase the Joule heat power inside the battery and at the charger connector, causing them to heat up severely, which may reduce the battery life or even damage the device. Without protective measures, high voltage and high current may directly damage the battery or even cause accidents such as fire. Some data cables do not support the passage of high currents, and rash use may also cause problems such as burning.
Therefore, in order to solve these problems, three “black technologies” in fast charging came into being, namely: charge pump, 6C battery cell and intelligent temperature control chip .
A charge pump, also known as a switched capacitor voltage converter, simply converts the high voltage used for fast charging into a small voltage that can directly charge the battery without consuming any power itself.
The main structure of the charging IC in the figure above is the charge pump. Compared with the traditional transformer, the charge pump is not only smaller in size and has lower quiescent current, but most importantly, its energy conversion efficiency is as high as 98% , which is nearly 10% higher than that of the traditional transformer, and has almost no effect on the charging power.
Another “black technology” – battery cells, is a rechargeable battery without a protective circuit board. After the charge pump is used to transform the voltage, the original current will be further increased. For a “20V 6A” charger, the voltage is reduced to 5V through the charge pump, and the current is increased to 24A, which is unbearable for traditional 3C battery cells. Therefore, 6C battery cells came into being.
For 2000mA·h batteries, 1C means that the maximum charging current does not exceed 2000mA (2A). Traditional 3C batteries can support a maximum charging current of 6A, while 6C batteries are sufficient to support 12A high-current charging. They have a small resistance and low heat generation power, making them one of the “black technologies” that support 120W fast charging.
In addition to the above two technologies, in order to perform high-power charging stably, these black technologies need to be reasonably combined.
Manufacturers of 120W fast-charging mobile phones generally use a dual-pole charging mode inside the mobile phones. Simply put, the battery is charged from two places at the same time, effectively achieving voltage and current division.
As mentioned above, the 24A current required for 120W fast charging is exactly the 12A charging current supported by the 6C battery after being divided into two paths. The special design also reduces the internal resistance of the battery, further reducing the heat power.
Even so, during the charging process, the maximum current and voltage that the battery can withstand may be different at different stages. In addition, if high power charging is used all the time, the heat released will accumulate and cause the internal temperature of the phone to be too high, damaging components. This is where the smart temperature control chip comes in.
An intelligent temperature control chip is a chip that changes the battery charging and discharging mode and the working status of various modules of the mobile phone according to the temperature according to a set program, thereby realizing intelligent regulation of the internal temperature of the mobile phone while minimizing the impact on the performance of the mobile phone.
With the intelligent temperature control chip, when we use 120W fast charging, the mobile phone charger may work overtime for the first three minutes to maintain the charging power of 120W. After that, due to the heat released by charging and the high temperature, the intelligent temperature control chip will adjust the current passing through to reduce our charging power to 80W or even 40W. Once the temperature drops, the power can be increased again.
Seeing this, the previous question has been answered: the 120W in 120W fast charging refers to the maximum charging power . Under the action of the intelligent temperature control chip, the actual charging power is constantly changing, and only a part of the time can maintain maximum power for fast “flash charging”. Therefore, the actual charging time is slightly longer than the charging time we calculated. This is the phone’s protection mechanism for itself.
Is fast charging your phone safe?
Simply put, fast charging is safe.
The data cables connected to chargers that support fast charging are specially made. Unlike traditional charging cables, they can support larger currents.
As mentioned earlier, there are various “black technologies” in current smartphones that support fast charging, ensuring maximum safety of use.
In addition, the mobile phone battery itself is equipped with a protection circuit to ensure that it will not be burned by high current. The adjustment of the intelligent temperature control chip also ensures that the mobile phone will not have accidents due to excessive internal temperature.
In addition, we can use a fast charging charger to charge ordinary mobile phones, but it will not have the effect of fast charging .
If you look closely, you will find that mobile phone chargers that support fast charging often have two logos. One is the most basic “5V 1A”, and the other is the supported fast charging power, such as “9V 2A”. The specific input voltage and current to be used is determined by the mobile phone’s intelligent control chip.
Of course, by the same token, you can use a regular charger to charge a mobile phone that supports fast charging, but it will not have the fast charging effect either.
Even so, you should be careful when charging and use a charger from a regular manufacturer with safety guarantees . Poor quality chargers have large internal resistance and generate a lot of heat. Long-term continuous use may burn them out or even cause a fire.
In addition, try not to open mobile phone applications that occupy more resources and CPU when charging , such as plugging in a charger to play large games, etc. Such operations will not only make the phone bear the heat of charging, but also the heat of high-load operation, which will not only make the smart temperature control chip slow down your charging speed, but also may reduce your phone performance and even cause safety accidents.
Finally, try to avoid overcharging and discharging. Don’t wait until your phone runs out of power before charging it, and don’t continue charging it after it’s fully charged, as both of these will affect the battery life.
In general, while enjoying the convenience of technology, we should use these emerging technologies safely and reasonably, and not bring ourselves into danger for the sake of temporary convenience or small profits.
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