1, magnetic resonance: a new breakthrough in long-distance transmission magnetic resonance technology is a new path, it through the resonator and magnetic field resonance to achieve remote transmission. Especially in electricityThe current is fixed, thereby transferring energy from the transmitting end to the receiving end.
3, the magnetic induction coil on the charging base converts electrical energy into electromagnetic waves, and the magnetic induction coil on the back of the phone converts electromagnetic waves into electrical energy to charge the battery.
4. Magnetic resonance A magneto consists of a large inductor coil with a small capacitor in parallel or in series, and the same resonant frequency is a necessary condition for energy transfer. For example, two coils are used as resonators, the transmitting end vibrates at 10MHz to radiate an electromagnetic field around, and the receiving end needs to vibrate at 10MHz to receive this transmissionEnergy. Radio waves. The principle is to convert environmental electromagnetic waves into current and transmit current through a circuit.
3, now, let's explore the mysteries of these two technologies! Electromagnetic induction technology electromagnetic senseShould technology is the first generation of mobile phone wireless charging representative, through the primary coil to transmit a certain frequency of alternating current, the use of electromagnetic induction in the secondary coil to generate current, wireless transmission of energy. However, this technology can only achieve single-to-single, short-distance (within 1cm) charging, the power is limited to 5 watts, and can not achieve single-to-multiple charging like WiFi.
4, the basic principle of wireless charging is to convert the current into a magnetic field, and the magnetic field is transmitted through the air and converted into a current to be transmitted to the intelligent terminal. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or 2The 4V DC terminal supplies power directly to the system. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
5, the mystery of wireless charging lies in electromagnetic induction: the transmitting coil of the charging base sends a signal. The signal searches for a receiving coil, such as that of a compatible smartphone. When the receiving coil is sensed, electromagnetic induction is initiated. Electrons (current) in the transmitting coil begin to flow around the coil. This generates a magnetic field, which can be sensed by the electrons in the receiving coil. Due to the magnetic field, electrons trapped in the receiving coil begin to flow around the coil.
1, wireless charging is also known as inductive charging or non-contact inductive charging, based on the principle of electromagnetic induction, it is not necessary to transmit electricity to the device like the traditional wired charger, but the device that needs to be charged can be charged by contacting the wireless charging base.
2, wireless charger usage: the mobile phone standard charger and data cable connected to the wireless charger, and then the mobile phone is/horizontally placed in the wireless charger base left and right center position, you can achieve wireless charging, the indicator light will have a breathing effect, 5 seconds after the extinguish, plug and play, convenient and quick.
3, wireless charging baseThe principle is to convert the current into a magnetic field, and the magnetic field is transmitted through the air and then converted into a current to be transmitted to the intelligent terminal. When the system works, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V direct current end to supply power to the system directly. After passing through the power management module, the output direct current is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
4, wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction type wireless charging, when the power supplyThe flow through the coil (the power supply coil of the wireless charger) will generate a magnetic field, and other unenergized coils (the electric coil on the phone side) will generate current near the magnetic field, charging the phone. As shown below.
5, also similar to a transformer, input from the primary coil, and then generate induced current on the secondary coil. It mainly relies on the energy transmission between electricity and electricity, converts electricity into magnetism, and then induces electricity. Wireless charging is simply to charge electrical equipment through electromagnetic fields or electromagnetic waves without being connected by physical wires. At present, there are three main methods: electromagnetic induction type and electromagnetic resonance typeRadio wave type.
Mi 11 wireless charging only needs to connect the wireless charger to the power supply, and then put the phone on the charging base, and wireless reverse charging needs to be opened in the phone. Here's how to do it: In the phone's Settings menu, tap on "Save Power and Battery". Open [Wireless reverse charging] in the "Battery" page, and then put the phone back to back with the device that needs to be charged.
Swipe down from the top of the phone screen to bring up the control panel, and continue to pull down to expand the full function of "Control Center". In the Control Center screen, swipe left to the last page. Click the Edit button. Click the wireless reverse charging button. When the button turns blue, it is on. The Mi 11, a mobile phone owned by Xiaomi Corp, was released at Xiaomi Science Park on December 28, 2020 and will be available on January 1, 2021.
Step 1: Confirm that the device supports wireless charging First, we need to confirm whether our millet 11 supports wireless charging function. You can view this information in your phone's Settings. Into theEnter "Settings" - "Battery and performance" - "Wireless charging", if the "wireless charging" option appears, it indicates that the device supports wireless charging. Step 2: Prepare a wireless charger After confirming that the device supports wireless charging, we need to prepare a wireless charger.
The way to turn on the Mi 11 wireless charging is very simple: just put the phone on the wireless charger, and it will automatically start charging. The Mi 11 is equipped with wireless charging, which is one of its many convenient features. Wireless charging not only provides greater convenience for users, but also helps reduce cablesAnd the use of adapters makes the charging process cleaner and more efficient.
Mi 11 wireless charging does not need to be turned on, just use a wireless charger to charge. The specific steps are as follows: Connect the charging head to the wireless charging base using a data cable, and then plug the charging head into the power supply. Place the charging base on the table and place the Mi 9 mobile phone on the wireless charging base to quickly charge. The wireless charger is composed of a charging head, a data cable and a charging base.
Swipe down from the top of the phone screen to bring up the control panel, and continue to drop down to expand the full function of "Control Center".In the Control Center screen, swipe left to the last page. Click the Edit button. Click the "Wireless reverse charging" button. When the button turns blue, it indicates that it is on. Note: This article applies to the MIUI 11 system of Xiaomi 10pro mobile phone.
This article will reveal the magic behind wireless charging, take you to enjoy the new experience of convenient charging. Plug-in charging base Wireless charging base actually needs to be plugged in! But don't worry, that doesn't make it any less amazingPlease. Magnetic field transfer energy Wireless charging technology uses magnetic field to transfer energy, from small power electromagnetic induction type to high-power resonance type, completely abandoning cumbersome wire connections.
Turn on Battery options Find the battery options in the Settings menu, turn on and find the wireless reverse charging switch. Turn on wireless reverse charging. Place the screen of your Huawei phone upside down on the desktop with the back facing up. Place the other mobile phone that supports wireless charging on the Huawei mobile phone in a glyph position with the back facing down. Multiple device charging At this point, you should see a reminder that it is charging.
Verdict: iPhone8 wireless chargeThe wireless charging technology of the iPhone8 not only meets consumers' pursuit of battery life and convenience, but also indicates the future of mobile phone charging. With the implementation of this feature, the mobile phone experience will be more seamless, let's look forward to this revolutionary change.