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.
Electromagnetic induction: Simple and efficient close contact electromagnetic induction, just like a pairTacit understanding of the dancer, the sending end and the receiving end through the induction of magnetic flux transfer power. 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.
Wireless charger is actually a device that uses the principle of electromagnetic induction to charge, similarIn the transformer, there is a coil at each end of the sending and receiving, the sending coil is connected to the wired power supply to generate an electromagnetic signal, and the receiving coil senses the electromagnetic signal at the sending end 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.
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. relayThe charger is powered on. Please 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.
Recently, Green Union launched a popular desktop 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 performance 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.
Green 2-in-1 magnetic wireless charger with two wireless charging areas, the body is made of metal material, vertical bracket design, support rod above the magnetic wireless charging area, support iPhone 12/13/14 series magnetic wireless charging, you can adjust the pitch Angle to facilitate charging while playing. On the base is a 5W wireless charging area, two areas can charge two devices at the same time, mobile phone headphones or two mobile phones together.
Green wireless chargingThe reason why the electric appliance is green is that it is not plugged in steadily or the charging machine is damaged. The charger internal components are in poor contact, resulting in the charger cannot be charged, check whether the charging loop is correct, check whether the electric vehicle plug and socket are in good contact, whether the wire is damaged, which is the first external factor that needs to be excluded.
1 Wireless charging technology (Wireless charging technology; Wireless charge technology, derived from wireless power delivery technology. Wireless charging, also known as inductive charging, non-contact inductive charging, 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.
2, what is the wireless charging technology of electric vehicles, detailed introduction to the wireless charging technology of electric vehicles - the basic principle of radio waves - similar to the ore radio used in the early days, mainly composed of microwave transmitter and microwave receiving device, receiving circuit,Radio wave energy bouncing off the wall can be captured, maintaining a stable DC voltage while adjusting with the load.
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, [1] Wireless charging technology; Wireless charge technology). Wireless charging technology [2], derived from wireless power delivery technology, uses magnetic resonance between the charger and the device