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English
Views: 0 Author: Jeannie Publish Time: 2025-04-08 Origin: Site
As we all know, there are magnetic separators on the wireless charging coils, so why add it, if you don't add it, it won't work? Let's follow the editor's explanation to understand why wireless charging should be magnetically isolated.
The magnetic separator is a magnetic sheet auxiliary material for the coils at both ends of the wireless charger, which is a magnetic material sintered at a constant high temperature, and the common coil magnetic separator is divided into the receiving end (common as a soft magnetic sheet, the thickness is very thin) and the transmitter end (commonly a hard magnetic sheet, the material is hard and fragile, and the thickness is generally about 0.1~0.8mm).
The wireless charging coil uses the principle of electromagnetic wave induction to charge electronic components, the inductance coil at the sending end is connected to the wired power supply to generate electromagnetic signals, and the electromagnetic signal at the receiving end inductance coil induces the sending end to convert into current to charge the battery.
The main functions of the magnetic separator are as follows:
First, the magnetic flux of the coil is increased
The greater the intensity of the magnetic induction in the magnetic field, the more magnetic inductance lines. The magnetic separator has a high magnetic convergence effect, by converging the magnetic inductance lines in the magnetic field, the greater the magnetic induction intensity, the greater the magnetic flux, which plays a role in the magnetic field energy of the emitting coil to act on the coil at the receiving end to the maximum, and improves the electromagnetic conversion efficiency.
2. Isolate the contact between metal objects and electromagnetic signals
In the magnetic field, the electromagnetic signal is easy to be absorbed and attenuated by the metal, which wastes energy, reduces the electromagnetic conversion efficiency, and the magnetic separator can effectively isolate the contact between the metal object and the electromagnetic signal, reduces the attenuation of the electromagnetic signal, and finally plays the role of magnetic blocking.
3. Increase the heat dissipation area
The greater the magnetic induction intensity in the magnetic field, the more heat will be generated by the charging coil, and if this heat is not effectively dissipated in the circuit, it will accumulate in a certain space, which may cause damage to electronic devices. That's where the heat we feel when we charge wirelessly comes from. The complete combination of coil, magnetic sheet and circuit board can increase the contact area of the inductor coil, which can effectively disperse the heat and transfer the heat, reducing the heat generation per unit area.
Pay attention to Golden Eagle Coils to learn more about inductance coil knowledge.
