Definition: Mobile wireless charger refers to a charger that can be charged without using a traditional charging power cord to connect to a mobile phone.
Charging Principle: Electromagnetic induction requires ancillary program functions such as foreign object detection, temperature control, and frequency conversion. Now the mobile phone charger charging distance (the gap between the coils) is generally set at 3-8mm, too close is easy to have mutual inductance, too far is too weak and inductive sensor. The charging efficiency (conversion rate) can now reach 80-84% in accordance with the QI standard laboratory, and the standard for mass production is 76%, but the actual use is about 60-73%, which is related to the placement and line loss.
Construction: control circuit board + charging coil + housing, in fact, the most important part of the wireless charger is the overall solution. The quality of wireless chargers determined by chips, circuit boards, and soldering processes.
Charging standard: The implementation of Qi standard, generally as long as Qi standard charging treasure / base (transmitter), can Qi's standard phone back shell / protective shell (receiver) to charge
Certification: QI Standard, FCC, CE
For mobile phones: Apple: iPhone 8, iPhone 8 Plus and iPhone X. Samsung S6 Samsung S6 edge and other Android phone manufacturers will follow up
Upstream Supply Chain: Solution Company, PCB Factory and Shell Material Factory