What is the principle of wireless charging? Will wireless charging be popularized?
1. The principle of wireless charging is that through near-field induction, wireless charging equipment will conduct energy to the charging terminal equipment, the terminal equipment will be received into the energy into electrical energy, stored in the device's battery. The principle of energy conduction is inductive coupling, which ensures that there is no exposed conductive interface. Not only can eliminate the messy transmission lines between devices, for electric toothbrushes and other electronic devices that often come into contact with conductive media such as liquids are also safer. Electromagnetic induction wireless charging is the most widely used wireless charging program. As mentioned in high school physics textbooks, a certain frequency of alternating current passes through the primary coil, and then electromagnetic induction generates a certain current in the secondary coil, which transfers energy from the transmitting end to the receiving end.
2. The current wireless charging program is mainly based on induction technology, which is simple and mature; this technology is based on Faraday's law of electromagnetic induction. Cutting a magnetic field through a conductor produces an electric potential. It generally consists of two coils. The primary coil is energized with alternating current, which generates a magnetic field, and the secondary coil induces alternating current due to the presence of an alternating magnetic field. The disadvantages of inductive wireless technology are low charging power, short charging distance and high positioning accuracy. In addition to open charging standards, there are many private wireless fast charging protocols. Private wireless fast chargers developed by cell phone manufacturers generally achieve higher charging power by customizing the development of the phone's wireless charging devices and wireless charging coils on the basis of compatibility with the Qi standard.
3. Wireless charging will be popularized. Currently the common wireless charging mode in our daily life has a very obvious limitation, that is, the cell phone and wireless charging device need to be neatly affixed together. Sometimes, you may even encounter a situation where your phone is tilted, or you can't charge it with a protective case on. Although there have been many improvements and advancements, in many scenarios, this electromagnetic induction charging method that needs to be stuck together limits the convenience and usefulness of the device.