1, recently, Green United launched a burstDesktop wireless charger (model CD186), Apple Android universal, support 5W and Apple 5W, Samsung 10W wireless fast charge, the key is the price of only 49 yuan, cost-effective can be said to crush the market similar 99 yuan products. In order to understand the workmanship of this product, the next thing to bring you is its unpacking.
1, the use of electromagnetic induction principle for charging equipment, the principle is similar to the transformer, by setting the coil at the transmitting end and the receiving end, the transmitting end lineThe coil sends an electromagnetic signal to the outside under the action of power, and the receiving coil receives the electromagnetic signal and converts the electromagnetic signal into current, so as to achieve the purpose of wireless charging. 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 system mainly uses the principle of electromagnetic induction. Wireless charger refers to the use of traditional chargingThe power line is connected to the charger on the terminal device that needs to be charged, using the latest wireless charging technology, by using 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 the device.
4, 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 in many handsThe packaging of the machine and wireless charger is often marked with the Qi label.
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. 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 alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
Magnetic field induction principle: Wireless charging uses the magnetic field induction principle, the frequency of the transmitting coil and the receiving coil is different, which will produce insufficient or excessive electromagnetic coupling, thus affecting the transmission efficiency of power. Resonance effect: In wireless charging, the magnetic field between the transmitting coil and the receiving coil will cause a resonance effect, and the power transmission efficiency is highest when the resonant frequency matches.
Electromagnetic induction wireless charging: This way of charging is to use the inductive magnetic flux generated between a wireless charging board and the induction magnet on the mobile phone, and convert this magnetic force into an electric powerTo carry out the transmission of electric current.
Principle of electromagnetic induction 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. In this process, electromagnetic induction plays a crucial role.
Distance limit: The device needs to be close to the charger to charge, and cannot be charged remotely. Low efficiency: wireless charging relative to wired chargingElectrical efficiency is low. Devices need to be equipped with wireless charging modules Expensive: wireless charging technology and chargers are more expensive than wired charging. Radiation problem: Wireless charging uses radio waves to transmit electricity, which may have an impact on human health if it is close for a long time.
emitters and electromagnetic wave generation. The transmitter of the wireless charger is the source of the energy transmission. When it charges the device, it produces high-energy electromagnetic waves of a certain frequency, which can transmit electrical energy. The design of transmitter is related to its transmission efficiency and stability, which is crucial to the performance of wireless chargers. Receiver and energy conversion.
1, 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.
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 equipment (The charger transmits energy to an electrical device, which uses the received energy to charge the battery and at the same time for its own operation.
3, 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 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 alternating current through the 2M active crystal oscillator inverter to supply the primary winding.
4, wireless charging method has electromagneticInductive, 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.
5, wireless charging system mainly uses 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, and uses the latest wireless charging technology by using coils between