Today to share the knowledge of Tianjin wireless charging program, which will also explain Tianjin has a shared charging treasure, if you happen to solve the problem you are now facing, don't forget to pay attention to the site, start now!
< ul>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; However, the disadvantage is that the equipment is large and the power is small.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 type primary coil of a certain frequencyAlternating current, which generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmission end to the receiving end.
First of all, you need to have an APPLE mobile phone that supports unlimited charging, such as iPhone X, iPhone8 plus, etc. Then you need to buy wireless chargers from formal channels, and it is recommended to buy them from Apple official dealers. 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.
Principle of wireless chargingSince the charger and the electrical device transmit energy by magnetic field, the two are not connected by wires, so the charger and the electrical device can be non-conductive contact exposed. It is important to note that whether it is a mobile phone or a charging bank, it has a wireless function, that is, a wireless coil.
2, wireless charging 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 mobile phone charging. High-power wireless charging often uses magnetic resonance, and the power supply device (charger) transmits energy to the electrical device, which uses the received energy to charge the batteryElectricity, and at the same time for its own operation.
3, the current wireless charging mode mainly includes three types: electromagnetic induction, magnetic field resonance, radio wave.
4, electric vehicle wireless charging technology mainly uses the mutual inductance in the law of electromagnetic induction. It is also similar to a transformer, which inputs from the primary coil and then generates an 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 wiresThe 2M active crystal oscillator is converted into high frequency alternating current to supply 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.
Generally seen wireless charging, the use of the "current magnetic effect" and "electromagnetic induction" principle. In 1819, the Danish scientist Elster observed a guideIf there is an electric current on the wire, a magnetic field will be generated around it, which can deflect the compass needle. 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."
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