This article gives you a talk about the principle of wireless back charging, and the corresponding knowledge points of wireless back charging principle, I hope to help you, don't forget to collect this site. < / p > < h2 > the article directory list: < / h2 > < ul > < li style = 'margin - bottom: 3 px; list-style: none'>1, Wireless charging schematic explain share to you
The principle of electric field coupled wireless charging is to transmit electrical energy through the induced electric field generated by the coupling of two sets of asymmetric dipoles in the vertical direction. Suitable for short distance charging, high conversion efficiency, the position can not be fixed; But the disadvantage is that the equipment needs large size and powerSmall. Therefore, at present, among the four wireless charging methods, electromagnetic induction wireless charging scheme is the most mature and most widely used in business.
Wireless charger is actually the use of electromagnetic induction principle for charging equipment, similar to a transformer, there is a coil at both ends of the sending and receiving, the sending end of the coil connected to the wired power supply to generate electromagnetic signals, the receiving end of the coil induction of the sending end of the electromagnetic signal to generate current to the electrical equipment. As shown in the figure below, current flowing through the coil creates a magnetic field. The proximity of other unenergized coils to a magnetic field generates an electric current.
Electromagnetic induction: simple and efficient intimate connectionElectromagnetic induction, like a pair of tacit dancers, the sending end and the receiving end transfer power through the induction of magnetic flux. It is known for its simple structure, high efficiency and low cost, and is especially suitable for close-range device charging. However, it also has limitations, limited transmission distance and strict location requirements, requiring accurate alignment to charge, as shown in Figure 4-1.
Electromagnetic induction type primary coil A certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain current, thereby transferring energy from the transmission end to the receiving end.
First you need to have an Apple that supports unlimited chargingMobile phones, such as iPhone X, iPhone8 plus, etc. Then you need to buy wireless chargers from formal channels, it is recommended to go to APPLE official dealers to buy. Then power on the wireless charger, make sure there are no magnetic objects around before connecting the power. Then place it in a flat place to prevent the phone from slipping off it.
First, you need to have an iPhone that supports wireless charging, such as the iPhoneX, iPhone8, iPhone8Plus, and so on. Then you need to buy wireless chargers from regular channelsBetween the magnetic field generated, the magic transfer of electrical energy, inductive coupling technology will become a bridge connecting charging base stations and devices. How to use: Connect the USB cable and plug it into the socket.
3, mobile phone wireless charging refers to the charger and the electrical device between the two can charge the mobile phone without wire connection.
4. If your Huawei mobile phone supports wireless charging, place the mobile phone screen facing up in the center of the charger or the position suggested by the manufacturer after the wireless charger is powered.
5, how to use wireless charging? Using wireless charging is notOften simple, just follow these steps: Plug the charger into a power outlet and place it on a desktop or other smooth surface. Plug the wireless charging receiver into the charging port of your device. Place the device in the charging area of the charger. Wait for the device to be fully charged. 6, 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.
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, the principle of wireless reverse charging is to use the power of the device itself to charge other devices. Some smartphones and other devices have reverse charging, which allows them to use their own electrical energy to charge other devices. Such asIf you have a phone that supports wireless reverse charging, you can put another device on the back of it and let it draw power from the phone's battery.
3, the principle of wireless charging technology is actually relatively simple, the use of electromagnetic induction principle, learned high school physics we should all understand that electromagnetic waves have energy, through the electromagnetic circle can capture this energy, and then form a current in the coil, and finally through a series of circuit integration can achieve charging.
4, mobile phone wireless charging, refers to the wireless charging board through the inductive coupling way to charge the mobile phone, this time noThe wire charging board is the transmitting end, and the phone is the receiving end. Reverse wireless charging refers to converting the inductance coil integrated inside the mobile phone into the output mode through technical means, so as to supply power to the small wireless charging device located on the back of the mobile phone.
5, wireless reverse charging refers to: the mobile phone as a wireless charging base, to support wireless charging devices (such as: watches, bracelets, mobile phones, etc.) to charge. Wireless reverse charging technology, derived from radio energy transmission technology, can be divided into low-power wireless charging and high-power wireless charging two ways. Low-power wireless charging often uses electromagnetic induction, such as charging mobile phonesThe Qi mode of electricity, but ZTE's electric vehicle wireless charging method uses induction.
Wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, etc. Wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charge the mobile phoneElectricity. As shown below.
The principle of wireless charging technology is "magnetic electricity", simply put, through the charging device and the mobile phone device installed on the two "magnetic equipment" mutual induction and formation of 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.
Wireless charging, also known as inductive charging or non-contact inductive charging, is based on the principle of electromagnetic induction, and does not need to be like a traditional wired chargerA transmission cable is required to transmit electricity to the device, but the device that needs to be charged can be charged by contacting the wireless charging base.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, 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 by 2M active crystal inverterAlternating current is supplied to the primary winding.
Wireless charging system mainly adopts the principle of electromagnetic induction. Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
Wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, etc. Wireless charging of mobile phones mostly uses the principle of electromagnetic induction. Electromagnetic induction wireless charging, when electricityWhen the current of the source passes through the coil (the power supply coil of the wireless charger), a magnetic field is generated. When the other unpowered coils (the power supply coil of the mobile phone) are close to the magnetic field, a current is generated to charge the mobile phone. As shown below.
Generally seen wireless charging, the use of the "current magnetic effect" and "electromagnetic induction" principle. In 1819, Danish scientist Elster observed that if there is an electric current on a wire, a magnetic field will be generated around it, which can deflect the north finger. Later generations have further found that the wire is encircled into a ring, or even wound into a coil, and the magnetic field generated will be stronger and more concentrated, which is called the "current magnetic effect.".
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. After charging the battery and passing through the power management module, the DC output is converted into high-frequency alternating current through the 2M active crystal oscillator inverter to supply the primary winding. By coupling the energy of the two inductors, the electrical output of the secondary coil is changed into direct current through the receiving conversion circuit to charge the battery.
The principle of wireless charging technology is "magnetic electricity", simply put, through the charging device and the mobile phone device installed on the two "magnetic equipment" mutual induction and formation of 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.
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