The multi coil wireless charging and receiving solution is composed of a transmitter and a receiver which can be used for high efficiency wireless charging, and the input three coil configuration is suitable for the application of the automobile level. Three coil compliance scheme supports QI standards and can be compatible with any QI standard receiver and transmitter. Wireless charging solutions that meet the QI standard can be used in a wide range of applications, such as smart phones, charging boards, automotive, industrial and other consumer electronics products.
Wireless charging is high frequency electricity, there is a strong skin effect, the scheme for the smart phone wireless charging, single coil area is small, and the three coil area, the current through a single coil. Three coil is a large area of the launch, the phone does not deliberately aligned with the central point.
Three wireless charging coil scheme now, is actually just a coil, the program will automatically choose the highest degree of coupling of a coil, a coil is designed into 3 increased induction area, convenient charging, and there is no improvement on charging efficiency. If 2 or more than 2 coils simultaneously, so must each have an independent IC control, but also their only one on one charge, not the 2 emission in the same receiver charging, and transmitting coil distance interval of at least 1CM (outer margin, not from the center), it is not possible coil appears superposition. Most of the wireless charging coil on the market three coil scheme, intermediate superposition of a coil, induction can eliminate the dead, if placed only two coils, but each coil each IC control, then the 2 coils will interfere with each other, the charging efficiency may be better than a coil, and the heat will be much larger.
