2, wireless charging magnetic field induction area This large circle represents the wireless charging magnetic field induction area in the mobile phone with a protective shell, relying on the built-in magnetic module of the mobile phone is a little powerless, so the built-in magnetic module of the protective shell can compensate for the magnetic force, Apple's official transparent protective shell can clearly see the white circle, This is the MagSafe magnetic module.
3. iPhone Magnetic buckle. The purple circle on the inside of the phone case is magnetic and can be used to charge. iPhone12The new Magsafe magnetic wireless charging technology can be simply understood as adding a circle of magnets on the basis of the original wireless charging technology. Through the attraction of magnets, the mobile phone and the wireless charger are accurately positioned and paired, while effectively avoiding displacement due to vibration, so that the mobile phone is in a more efficient wireless charging state, which can support up to 15W power.
4, this is a wireless charger, if your device supports wireless charging technology, then plug one end of the charger into the power socket only need to put your device screen up on the charger, you can charge the device (please note the corresponding charge)How does charging work? '> How does wireless charging work? Wireless charging, also known as inductive charging, non-contact inductive charging, comes from wireless power transmission technology, is the use of near-field induction, that is, inductive coupling, by the power supply device (charger) to transmit energy to the power device, the device uses the received energy to charge the battery, and at the same time for its own operation.
Charging equipment using the principle of electromagnetic induction, the principle is similar to the transformer, by setting the coil at the transmitting end and the receiving end, the transmitting end coil sends an electromagnetic signal to the outside under the action of powerThe receiving coil receives the electromagnetic signal and converts the electromagnetic signal into current, so as to achieve the purpose of wireless charging.
Wireless charging principle is mainly electromagnetic induction and wireless electromagnetic wave technology. The principle of electromagnetic induction is the basis of wireless charging. Electromagnetic induction occurs when a magnetic field is generated between a charger and a mobile device. The alternating current generated at the charger end will create eddy currents in the magnetic field, and the receiving coil at the mobile device end will sense this eddy currents. In this way, power is transferred from the charger to the mobile device.
The principle of wireless charging technology is "magnetic electricity"In simple terms, the charging device and the two pieces of "magnetic equipment" installed on the mobile phone device are induced to each other and form a current. At present, products supporting wireless charging have appeared in mobile phones, electric vehicles, smart furniture and other fields. Among them, in the mobile phone industry, the "Qi standard" is the most common, and Qi labels are often used in the packaging of many mobile phones and wireless chargers.
The basic principle of wireless charging is to convert the current into a magnetic field, which 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, or24V DC terminal is used to supply 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.
Simply put, the current is concentrated in the skin part of the conductor, so it is called the skin effect. The reason for this effect is mainly the changing electromagnetic field inside the conductorA vortex electric field is generated, which cancels out the original current. Obviously, in high-frequency applications, if only one wire is used because of its relatively small surface area, the current utilization rate will be greatly reduced, so that the wire heating is serious or the signal attenuation is increased, which is obviously what we do not want.
The same size. The same size and as close as possible, otherwise it will have no effect, low conversion efficiency.
This principle is similar to the single-phase transformer, that is, the AC coil produces the opposite magnetic field back and forth, and when the receiving coil senses the magnetic field change, the induced current is generated, and the received electrical signal can be given to the electrical device through transformer rectificationIt's charged. It's kind of like that. It uses an induction coil.
There is an electromagnetic signal sent in the sending single coil, and the receiving single coil can receive the electromagnetic signal sent, and then the electromagnetic signal is converted into current, and the current enters the mobile phone, so as to achieve the effect of wireless charging. In simple terms, the wireless charger is actually a charging mode that relies on the energy of electromagnetic waves to convert electromagnetic waves into electricity.
Transmitter coil based on a certain frequency of alternating current through electromagnetic induction in the mobile phone receiving coil to produce a certain current, so as to transfer the point energy from the transmitter end to the receiving end, the general charger also has a transformerHowever, the wireless charging transformer composed of the transmitting coil and the receiving coil is limited in structure, and the energy transmission efficiency is theoretically slightly lower than that of the general charger.
When we do not understand wireless charging, we will naturally feel that it must be a very complex project. In fact, this is not the case, we only need to make a wireless charging transmitting coil and a wireless charging receiving coil can create a simple wireless charging environment, now we may wish to try.1, mobile phone wireless charging refers to the charger and the electrical device between the two can charge the phone without wire connection. 2, wireless charging is also known as inductive charging, non-contact inductive charging, from wireless power transmission technology, is the use of near-field induction, that is, inductive coupling, by the power supply device (charger) to transmit energy to the power device, the device uses the received energy to charge the battery, and at the same time for its own operation.
3, wireless charging means to provide electrical energy for electronic devices through wireless means. Wireless charging is a modern technology that does not need to be passedTraditional physical cable connections to charge electronic devices. The basic principle is to use electromagnetic induction or radio waves to transmit energy. This technology uses a charging dock or charger to wirelessly sense the device to transfer power. There are many ways to implement the specific principles and technologies of wireless charging.
4, wireless charging, also known as inductive charging, non-contact inductive charging, is the use of near-field induction, that is, inductive coupling, by the power supply device (charger) to transmit energy to the power device. If the distance between the charger and the electrical device is far, it is necessary to use resonant inductive couplingPlan.
5, wireless charging is a convenient charging technology. Wireless charging realizes the function of charging electronic devices without data line connection through the principle of electromagnetic induction. It is based on the magnetic field between the charging base or charging pad and the device, and transfers power wirelessly to the device's battery. This technology uses special induction coils and corresponding power management chips to ensure a safe and efficient charging process.
Wireless charger refers to the advantageA device charged by electromagnetic wave induction is similar to a transformer. There is a coil in the sending end and the receiving end. The sending end coil is connected to the wired power supply to generate an electromagnetic signal, and the receiving end coil senses the electromagnetic signal of the sending end to generate a current to charge the battery. The wireless charging system mainly uses the electromagnetic induction principle, and the energy transmission is completed through the continuous energy coupling of the coil.
Wireless charging base to increase the coil, or do not modify it, you increase the coil not only did not play a good effect but affect the speed of charging, increasing the coil is equal to increasing the resistance, it will make the current slow, the coil is proportionally woundToo much or too little can not, coil around less, there will be damage to the parts, resulting in parts burned spark, because do not be free to modify the wireless charging base.
Vertical wireless charger adopts classic base plus support board design, simple and dignified. Product parameters show that it supports dual coil output, moderate size, using PC ABS material. The internal configuration of FCC, CE, ROHS, Prop65 and other certifications to ensure safety and reliability. The smart design of the support board can stabilize the mobile phone, which is convenient to watch TV series or receive information, and improve the user experience.
Xiaomi vertical wireless charger (20W99 yuan 20W wireless charging power, double coil design mobile phone can be placed vertically or horizontally. I have three of this charger, and have been in use, this product's appearance design/charging performance and texture quality I think is right for this price, in the same price or even higher prices I personally think it is a good choice.
even leads to possible security risks. The Nanfu vertical air-cooled wireless charger is also equipped with a quiet fan with induction function. In the process, the air cooling function is triggered intelligently to solve the heat accumulation phenomenon during the charging process. At the same time, Nanfu vertical air-cooled wireless chargers are used in the industryIt is difficult to achieve the demand of "free placement, charge at any time". Because its inner structure adopts double coil design. Fast power supply can be realized in use regardless of horizontal or vertical.