electric field coupled wireless charging, the principle is to transmit power by coupling two sets of asymmetric dipoles along the vertical direction of the induced electric field generated. Suitable for short distance charging, high conversion efficiency, the position can not be fixed; However, the disadvantage is that large equipment is requiredThe power is also small.
The specific principle is that both ends of the wireless charging device can generate the same frequency magnetic field through the resonator to achieve the purpose of resonance generation of electric energy for mobile phone charging. From the point of view of the charging principle, in addition to the advantages of longer wireless transmission distance, there are also the advantages of convenient manufacturing of equipment. Only because this wireless charging efficiency is relatively poor, it is gradually replaced by other wireless charging methods in the mobile phone market.
The principle of wireless charging: electromagnetic induction. The charging base and the phone terminal have built-in coils, and when the two are close, the transmitting coils are based on a certain frequency of communicationElectricity generates a certain current in the receiving coil of the mobile phone through electromagnetic induction, which transfers the electrical energy from the transmitting end to the receiving end, and begins to supply power to the mobile phone from the charging seat. Magnetic resonance.
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 type wireless charging, when the power supply of the current through the coil (wireless chargerOther unenergized coils (the receiving coil on the phone) near the magnetic field will generate current to charge the phone. As shown below.
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's 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, charging the mobile phone.
The side of wireless chargingThere are electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, wireless charging of mobile phones mostly uses the principle of electromagnetic induction. At present, the principle of the mainstream mobile phone wireless charging: electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's 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, charging for the mobile phone.
The reason why mobile phones can achieve wireless charging is to rely on electromagnetic induction, radio waves, magnetic field resonance and electric field coupling. Its different ways, based on the phaseTouch inductive charging, derived 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, the principle of wireless charging 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 creates eddy currents in the magnetic field, while the receiving coil at the mobile device endIt senses this vortex. In this way, power is transferred from the charger to the mobile device.
4, the use of electromagnetic induction principle for charging equipment, the principle is similar to the transformer, through the transmitter and receiver end set coil, transmitter coil under the action of power to send electromagnetic signals, the receiving end coil to receive electromagnetic signals and electromagnetic signals into current, so as to achieve the purpose of wireless charging.
5, 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. The input will communicate when the system is workingThe electricity is converted into direct current by the full bridge rectifier circuit, or the 24V direct current terminal is used to supply power 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.
6, wireless charger principle and structure Wireless charging system mainly uses the principle of electromagnetic induction, energy coupling through the coil to achieve energy transfer. When the system is working, the input end converts the AC mains into direct current through the full bridge rectifier circuit, or uses the 24V DC end to supply power directly to the system. The DC output after the power management module is converted into 2M active crystal inverterHigh frequency alternating current is supplied to the primary winding.