QI WIRELESS CHARGING
Wireless Charging standard
Mainstream wireless charging standards have four kinds: Wireless, Power, Consortium (WPC) standards, both Qi standards, Power, Matters, Alliance (PMA) standards, Alliance, for, Wireless, Power (A4WP) standards, iNPOFi technology.
QI Standard wireless Charging
Qi is the world's first to promote wireless charging technology standardization organization - Wireless charging Union (Wireless Power Consortium, referred to as WPC) launched the wireless charging standard, with convenience and versatility of the two characteristics. First of all, different brands of products, as long as there is a Qi logo, you can use Qi wireless charger charge. Secondly, it overcome the technical bottleneck of wireless charging "universal", in the near future, mobile phone, camera, computer and other products can be charged with the Qi wireless charger, provide the possibility of large-scale application of wireless charging.
The market mainstream wireless charging technology mainly through three ways, namely electromagnetic induction, radio wave, and resonance effect, and Qi adopts the most mainstream electromagnetic induction technology. In terms of technology applications, the Chinese company has stood at the forefront of wireless charging industry. It is reported that, Qi's application in China is mainly mobile phones, this is the first stage, and later will be developed to use in different categories or higher power digital products.
Basic Principle
Electromagnetic induction: 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 energy from the transmission to the receiving end. At present, the most common charging solution on the use of electromagnetic induction, in fact, the electromagnetic induction solution on the technology is not too much mystery, China local Byd Co, as early as December 2005 for the Contactless charger patent on the use of electromagnetic induction technology.