Component loss affects wireless charging speed slow components conduction resistance is small, the system conversion efficiency is high. The selection of components such as triode with small internal resistance can greatly improve the efficiency of wireless charging. However, with low internal resistance, the cost will be relatively high.
Wireless charging efficiency is related to power, the greater the general power generated by the greater the magnetic field range the closer the distance the better the efficiency, and the closer the receiving coil and the sending coil, the higher the energy conversion efficiency, according to the distanceSmall power efficiency from 100% to around 0%. The distance is greater than 10 cm, and the conversion efficiency is only about 60%, that is, the sent power is 1000W, and the received power is only 600W.
Wireless charging transmission, receiving module component specifications, the distance between the coil, the interval material material will have an impact on the charging efficiency, there are a lot of wireless charger program related information available for query, your wireless charging program for what purpose, different technical solutions charging efficiency is very different.
GND is ground. The common negative electrode. This stuff improves efficiency. One, coilsThe material. With two-wire structure, the effective conductive area decreases due to the skin effect of high frequency conduction. Therefore, the coil can be wound with multiple strands of wire (insulation between wires). Three use low voltage drop diodes. Fourth, the electromagnetic wave is attenuated by the square of the distance, so the closer the distance, the higher the transmission efficiency.
The principle of wireless charging is actually very simple, based on the familiar electromagnetic induction (the current generates a magnetic field through the electric coil, and the coil close to the magnetic field will generate induced current), so as to achieve the wireless transmission of current. Just like a transformer, the two coils are connected by a block of iron, and wireless charging turns the block of iron into air.
When there is a problem, we should first check and eliminate the above problems, which will save more time and trouble.From the mobile phone itself, there is also a system to adjust the control circuit inside the mobile phone, which can play a protective role in over-current and over-voltage. In the same way, the data cable is also like this, high-quality charging cable can play a charging role, and inferior charging cable will cause mobile phone charging damage.
This is caused by the use of high-energy applications, too many applications running in the background of the phone, too many mobile phone functions, or hardware problems of the phone. Temporarily use applications with high energy consumption. Will run in the background of the phoneThe application is closed. Turn off functions you don't need on your phone. Mi 11 charging speed: from 1% to 55% in 15 minutes.
When the temperature is too high, the charging power will automatically decrease. All versions of Mi 11 charging temperature control is particularly strict, the temperature reached 36 degrees began to slow down 40%, normal to 9000ma, mobile phone temperature above 36 degrees is only about 5000 ma. The Mi 11Pro battery is equipped with a large battery capacity of 5000mAh, which supports 67W fast charging, 67W wireless charging, and 10W reverse charging.
This article will beYou detailed the whole process of millet 11 wireless charging, so that you can easily open the wireless charging mode. Check if your phone supports wireless charging First, open "Settings," go to "Battery and Performance," and look for the "Wireless charging" option. If you see it, it means that your Mi 11 has wireless charging superpowers! Choose Qi standard charger Secondly, choose a wireless charger that is in line with Qi standard.
1, wireless charging speed and inputPower is closely related. If the charger power is not up to standard, the charging speed will naturally be reduced. Too far away? The phone is in close contact with the charging base, and the charging is more efficient. Running out of power? When the battery is running out, the charging speed will also panic. It is recommended to charge in time when the power is less than 20%, so that the love machine can eat full.
2, the power is too low. Wireless charging desk lamp flashing is too far away from the electric disk, should be put closer. It is also possible that the input voltage is unstable. It's simple. Discharge regularly. For example, every month, if there is no power failure, do not plug in the AC plug, turn on the light, and use it straightWhen the light doesn't go on, it means that the electricity has been discharged. Plug in the AC power. You can change a longer plugboard to solve the problem of false contact.
3, slow charging speed: Due to the current mobile phone and other receiving devices, most limit the input power, so the charging speed is slow. High cost: The charger needs to have an electronic circuit to push the coil, and the electric device needs to have an electronic device to convert power, both need to have a coil, and need a high-frequency filter circuit to meet the electromagnetic compatibility, so the cost is higher than direct charging.
Wired fast charge, half an hour to 61%. 0-100 takes only 63 minutes. Wireless flash charge to 55% in half an hour. 0-100 takes 74 minutes.
Millet mobile phone has a special situation, the phone charger is not configured with the phone, but needs to be purchased separately, but many people for budget considerations, did not buy a special millet charging head, but use other charger head to mention, because it is not the original configuration, resulting in extended charging time.
Upgrade version 20w Xiaomi wireless charger can be fully charged in less than 2 hours, supporting a variety of scenarios, less the shackles of traditional charging, so that charging more free. However, Xiaobian believes that with the usual situation that everyone likes to charge and play games at the same time, it is still relatively weak, because the mobile phone can not leave the wireless charger in the process of wireless charging.
Reduces heat loss and ensures charging efficiency. Lei Jun stressed that Xiaomi's innovation in the field of wireless charging began with 5W, and it is committed to reducing costs, giving the price of 99 yuan to high-end features. The 20W wireless flash charge of Mi 9 is the first in the world, and it can be filled in 90 minutesEven more than many wired charges. Xiaomi insists on allowing users to enjoy this convenience without pressure, and promotes wireless charging into a more practical stage through the 99 yuan charging board.
2, flexible charging: Although the wireless charging treasure is wireless, it often supports wired charging, and it is very convenient to choose which one. And it can be used with multiple devices. Disadvantages: slightly slower charging speed: compared with wired charging banks, even with fast charging, the charging speed of wireless charging banks will be slightly slower, especially for devices with large-capacity batteries, and the charging time is longer.
3, low charging efficiency: compared with wired charging, wireless charging efficiency is low. This means usingHomes take longer to be fully charged. In addition, since wireless charging requires energy conversion between transmit and receive, it may lead to reduced battery life. Slow charging speed: Due to the low efficiency of wireless charging, the charging speed is relatively slow. This causes users to have to wait longer to complete the charge.
4, magnetic resonance wireless charging technology is a new way of charging, it transmits energy through the magnetic field, without the use of traditional wired charging equipment. Although this technique has certain advantages, it also has some disadvantages. Conversion efficiency of low efficiency magnetic resonance wireless charging technologyGenerally only about 70%, compared with wired charging efficiency is low.
5, the efficiency is slightly lower: the general charger also has a transformer, but the wireless charging transformer composed of the transmitting coil and the receiving coil is limited in structure, and the efficiency of energy transmission will theoretically be low by the general charger. Slow charging speed: Because most of the current receiving products such as mobile phones limit the input power, the charging speed is relatively slow.
For wireless charge slow To ensure that your sleep environment wireless slow quiet wireless slow , will automatically enter the silent charging state wireless slow , the fan speed will be reduced. During this time, the phone/charging pad intelligently adjusts the wireless charging power, and the charging speed is slower than the rest of the day. Huawei this 50w fast charge after 9 o 'clock automatic slow down silent charging, after 7 o 'clock in the morning the speed is normal, before I thought it was bad, who knows there is thisThe rules, the main still can't close this restriction is the most uncomfortable.
Huawei 50w vertical wireless charger to the night charge is particularly slow. This is to ensure that the sleeping environment is quiet, it will automatically enter the silent charging state, during this period, the mobile phone charging board intelligently adjusts the wireless charging power, and the charging speed is slower than the rest of the day. It is generally automatically reduced speed and silent charging after 9 o 'clock in the evening, and the speed is normal after 7 o 'clock in the morning.
Wireless charging is a convenient and fast way to charge, but in the process of use, there will be some problems.
Keep the charging port clearThe interface of the clean phone and the charger is exposed, it is easy to enter some small foreign objects, or the plug and remove are too violent when charging, resulting in loose or even wear and deformation of the interface, which will cause the mobile phone to charge slowly, because of poor contact, and even hot in serious cases, resulting in the mobile phone can not be charged or charging intermittently, affecting the battery life.
This problem is mainly due to the instability of the system or the compatibility of the charger. Start by cleaning out the trash, uninstalling unwanted software, and restarting your phone.