Views: 8 Author: Site Editor Publish Time: 2022-02-10 Origin: Site
Wireless charging does not need to transmit electricity to the device through a cable like a traditional charger. It only needs to contact the device and the wireless charging base to charge. Therefore, wireless charging can also be called inductive charging or non-contact inductive charging.
Wireless charging history
Wireless charging technology has existed for more than 100 years. Still, until Apple used it on the only iPhone 8 model, this technology entered the eyes of the public and began to spread rapidly. As early as 1894, Nikola Tesla demonstrated Magnetic Resonant Coupling, a magnetic field between two circuits to transmit electricity through the air.
It wasn't until 1978 that American inventor John George Bogle began experimenting with wireless charging of electric vehicles. There have been countless attempts and developments since then.
In January 2009, WiPower company developed the magnetic resonance standard "A4WP", which supports up to 50W power transmission, the distance can be up to 5 cm, and the power transmission frequency is 6.78 MHz.
In July 2010, the Wireless Power Consortium (WPC) developed the magnetic induction standard "Qi." Standardized for 5W or smaller mobile terminals
In January 2012, IEEE released the PMA magnetic induction standard according to the IEEE Standards Association (IEEE-SA), and the industry formed the Power Affairs Alliance (PMA). Like Qi, this standard mainly establishes a set of safe, energy-saving inductive power standards and implements intelligent power management.
In September 2015, A4WP and the PMA wireless charging organization merged into the AirFuel Alliance to promote a unified wireless charging standard.
At present, our products mainly comply with the industry standards: Qi standard of Wireless Power Consortium (WPC) and AirFuel Resonant (A4WP standard) and AirFuel Inductive (PMA standard) of AirFuel Alliance (AFA).