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Analysis of three functions of flexible Ferrite separator on wireless charging Coil in Absorbing Material factory?

Author:admin   AddTime:2020-06-18

I have written a lot about the role of ferrite tablets before. Today, I will summarize the three main functions of flexible ferrite tablets on the wireless charging coil. First of all, I will explain what ferrite tablets are.
I. Ferrite Tablets introduction:
By using the metal with high permeability and high loss, the ultramicro molecule crystallizes into a variety of soft magnetic alloys and layers of strip thin films. The broadband can effectively absorb the microwave noise generated by the electronic components, modules and surface currents, improve the efficiency and reduce the temperature, providing an excellent EMC solution for various electronic equipment.

Ferrite slices

Ii. Three main functions on the wireless charging coil:
1, permeability,
As is known to all, the principle of the QI wireless charging standard for baffle discs is electromagnetic induction. When the primary coil (wireless charging transmitter) works, an interactive magnetic field (strong and weak direction constantly changes) is generated. In order to make the magnetic energy emitted by the primary coil act on the secondary coil (wireless charging receiver) as much as possible, the magnetic field of the primary coil needs to be guided.
2, magnetic block
The magnetic disc should not only be able to effectively conduct the magnetic field, but also play the role of retaining the magnetic field. Why block magnetism? We know that when a changing magnetic field meets a conductor such as a metal, an electric current will be generated if the metal is a closed wire, and an eddy current effect will be generated if the metal is a closed wire, especially a whole piece of metal.
3, heat dissipation
A magnetic field ACTS on an inductive coil, causing it to produce a high-frequency current. In the process, the coil itself generates heat, which, if not effectively emitted, can accumulate. Sometimes we feel a lot of heat from wireless charging. Generally by the inductance coil heating or circuit board heating.
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