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. Coupling energy through 2 inductors, timesThe electrical output of the stage coil is changed into direct current to charge the battery by accepting the conversion circuit.
Wireless charging, 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. More use doubts can enter vivo official website -- my -- online customer service -- input labor, consult online customer service feedback.
A solenoid is installed inside the wireless charging source. After the power switch is turned on, the electromagnetic coil transfers the electric energy of the power batteryIt is converted into a large amount of magnetic energy, and then a reverse coil (the international standard brick QI coil) is used to receive this large amount of magnetic energy, convert it into electrical energy, and pass it into our equipment reserve battery through a metal output head. Wireless charging Because electromagnetic transmission only needs to be transmitted in space, no medium is required, so wireless charging can be carried out.
1, 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 senseThe reaction forms an electric 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.
2, 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 uses the 24V direct current end to supply power to the system directly. The DC power output passes through the power management moduleThe primary winding is supplied with high frequency alternating current through the inverter conversion of 2M active crystal oscillator.
3, 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 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. As shown below.
4, what are the characteristics of wireless charging From the theory, wireless charging technology for the human bodyThe resonance principle used by wireless charging is magnetic field resonance, which is transmitted only between coils resonating at the same frequency, and other devices cannot accept the band, in addition, the magnetic field used by wireless charging technology is itself harmless to the human body.
5, in terms of wireless chargers, the power source is the same as wired charging, which is provided by the power supply side. Such as plugs, charging banks, etc., but when charging the device, no cable is needed, and it is charged with the release. iWALK Wireless Charger Wireless charging technologIntelligent 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.
There are five principles of wireless charging: electromagnetic induction type, magnetic resonance type, radio wave type, focused light type, ultrasonic wireless charging type. Electromagnetic induction A certain frequency of alternating current in the primary coil generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmission end to the receiving end.
The current wireless charging technology mainly has electromagnetic induction, magnetic resonance, radio wave and electric field coupling four basic ways. Electromagnetic induction: This kind of charging system is mainly composed of the primary coil and the secondary coil two coils, through the primary coil with a certain frequency of alternating current, due to the role of electromagnetic induction, in the secondary coil will produce a certain current, visible energy from the transmission end transferred to the receiving end.
1, wireless charging system mainly uses electromagnetic inductionReason. 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.
2, the basic principle of wireless charging: electromagnetic induction type: the primary coil of a certain frequency of alternating current, through electromagnetic induction in the secondary coil to produce a certain current, so as to transfer the energy from the transmission end to the receiving end.
3, generally seen wireless charging, the use of "current magnetic effect" andThe principle of electromagnetic induction. 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."
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 uses the 24V direct current end to the systemPower on. 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.