This article to talk about wireless fast charging handshake protocol, and wireless fast charging handshake protocol is safe corresponding knowledge points, I hope to help you, do not forget to collect this site. < / p > < h2 > the article directory list: < / h2 > < ul > < li style = 'margin - bottom: 3 px; list-style: none'>1, How much does iphonex supportLow w fast charge
iphonex support 18w fast charge, according to the official data given by Apple, this phone can be charged in 30 minutes to 50%, charging speed is relatively fast. Mobile phone fast charging is mainly divided into three categories VOOC flash charging technology,Qualcomm QuickCharge0 fast charging technology, Mediatek PumpExpressPlus fast charging technology.
Apple x fast charge support USBPD standard, up to 29W fast charge power, 9V2A (Apple orQC standard), 15V5A (PD standard), commonly used ordinary USB-A interface support up to 2V4A (Apple standard).
iPhonex supports 18w fast charge, according to official data, you can quickly charge to 50% in 30 minutes, iPhonex has a low battery mode, open the phone's systemOn the setting page, click Battery and turn on the low power mode.
Apple x Fast charge support 18W, 29W, 30W, 61W and 87W five USB-C interface fast charge. A fast charger that supports the USBPD protocol via a USB-CtoLighting cable. The iPhoneX is an iPhone series smartphone designed, developed and sold by Apple Inc., which was unveiled by Apple CEO Tim Cook at the Steve Jobs Theater on September 13, 2017, to commemorate the 10th anniversary of Apple's iPhone.
It is the result of the collaborative work of the charging head, line and power management chip. Charging head is the protagonist, the most important, for fast charging, charging power is a key indicator to measure fast charging technology, and this indicator is the charging head. For mobile phones, multi-power fast charging technology needs to match the corresponding power of the charging head.2, mobile phone fast charging technology mainly depends on the design of the charger head. The quality of the charging line will also affect the charging speed, and the old thin line can not achieve the effect of fast charging even if the use of fast charging technology, because the copper wire inside the good wire is thicker. The speed of charging speed mainly depends on the charging headThe output power, and whether to use the original charger and cable. Original accessories often provide better charging performance.
3, fast charging technology mainly depends on the charging head. The charging head is the starting point of the current output, which determines the size of the voltage and current, as well as the maximum output power, which together determine the maximum charging power that the phone can obtain. The function of the data line is to transmit the current. Data cable quality and wire performance have a certain impact on charging efficiency. The material quality of the data cable determines the loss of current in the transmission process.
4, mobile phone fast charge depends onData cable and charging head support fast charge. First of all, the charging head needs to have the same fast charge protocol as the mobile phone, and then the maximum current that the data line can carry will also affect the fast charge function of the mobile phone. Charging head: In the process of charging a smart phone, the role of the charging head is to provide charging voltage and current for the mobile phone, generally the 5V/2A charger is called an ordinary charger, which does not have the ability to charge fast.
5, first of all, the fast charging technology needs to be combined with the charging head and the charging cable to achieve. The charging head is the source of power supply, which determines the size of the output current and voltage. One supports fast chargingThe charging head is able to provide higher current and voltage than ordinary chargers, thus charging the device faster. At the same time, the charging head also has a control circuit inside, which can ensure the stable output of current and voltage, and protect the charging equipment from damage.
6, the mobile phone fast charging function depends on the synergistic effect of the charging head and the charging line. The charging head is responsible for providing the maximum current and voltage, while the charging line determines the resistance of the current flow. If the quality of the charging line is poor, the resistance increases, and the fast charging speed will be affected. Even if there is a high-quality charging cable, if there is no charging head that supports fast charging, fast charging cannot be achieved. realizeFast charge also needs the support of the phone itself.
Fast charge sumAccording to the relationship between the line, fast charge requires the mobile phone built-in power management chip, data cable, charger three parts of the joint coordination, indispensable. A data line is a line used to connect a mobile device to a computer for data transfer or communication purposes. In popular terms, it is a tool that connects computers and mobile devices to transmit videos, ringtones, pictures and other files, and it can also be connected to a charger to charge mobile devices.
Fast charging of mobile phone is a complete set of technical process, which requires the cooperation of built-in power management chip and charger to achieve fast charging. This is to say, does not support the fast charge function of the mobile phoneOr the charger can't be charged fast. In theory, fast charging will cause some harm to the mobile phone battery, but this is very small and will not affect the normal use of the mobile phone. As long as the use of fast charging appliances that meet the regulations, there will be no impact on the mobile phone battery.
Mobile phone fast charging principle analysis: High voltage but constant current: This fast charging technology achieves fast charging by increasing the charging voltage while keeping the current constant. For example, raise the charging voltage from the standard 5V to a higher voltage, such as 9V or 12V, while the current is protectedHold at about 2A. Doing so can significantly increase the charging power, thereby reducing the charging time. Low voltage and high current: Another approach is to maintain a lower voltage but increase the current size.
There are three principles of mobile phone fast charging: High voltage but constant current, low voltage and high current, high voltage and high current, although they achieve fast charging in different ways, but the principle is more similar, is to increase the voltage or current way to improve the charging speed, so that the problem of slow charging speed can be solved before, and different manufacturers use fast charging protocol is not the same, the principle is different.
handThe principle of fast charging is actually as follows: high voltage and small current in fact, mobile phones want to fast charging must be coordinated, which uses the charging line, lithium battery and charger.
The principle of fast charging mainly involves the following three methods: increase the output voltage, constant current: Different from the ordinary charger to maintain 1 amp current, reduce the 220 volt voltage to 5 volts, and then reduce the 5 volts to 2 volts to charge the battery. If the voltage is increased to 9 volts, it can theoretically reduce the charging time by half. However, this method can cause the charger and phone to overheat, which can cause damageDamage the battery.
Both fast charge and flash charge refer to fast charging technologies, but the principles of the two are different. Fast charging is to increase the charging voltage and speed up the charging speed. The flash charge is to increase the charging current and speed up the charging speed. The essence of both methods is to improve the charging power, the greater the power, the shorter the charging time. In addition, the low voltage and high current of flash charging will have a higher safety factor than the high voltage and low current of fast charging, but the general purpose is poor, and only square accessories can be used.
The reason why the fast charging phone does not show a handshake may be because the fast charging protocol is not the same. The mainstream common protocol of fast charge is QC, PD, and other homes also have some protocols, but most of them are used for their own equipment.
He only said 2A that is not fast charge, fast charge is a communication protocol, when your mobile phone and the charging bank through the protocol communication after the mobile phone will open the fast charge mode.
② If the use of other chargers can not be charged, the phone interface may be broken, to find a professional repair. The battery inside is broken, and the general charging bank has several batteries in parallelIt's for the power supply.
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