The Qi standard is the world's first wireless charging standard introduced by the Wireless Power Consortium (WPC), the standardization organization that promotes wireless charging technology. It adopts the most mainstream electromagnetic induction technology and has two major features of compatibility and versatility. As long as you have a Qi logo, you can use the Qi wireless charger. Because of solving the common problem, in the near future, mobile phones, cameras, computers and other products can be charged with Qi wireless chargers, which provides possibilities for large-scale wireless charging applications.
Qi based on the principle of electromagnetic induction transmission by the transmitter coil L1 and the receiver coil L2, the two coils together constitute an electromagnetic coupling sensor. The alternating current carried by the transmitter coil generates a magnetic field and causes the receiver coil to generate a voltage through induction.
Qi products are applicable to all countries and regions around the world, such as the United States, China, Japan, and the European Union. They can be sold globally through certification, and the Qi logo can be used in any form for product promotion, packaging, and product labels.
From: Denise Wang