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Why do mobile phone wireless chargers need to add magnetic spacers? What is the role?

Author:admin   AddTime:2021-08-28

As a fashionable and convenient charging method, wireless charging is becoming more and more popular among consumers, and it is developing rapidly in the field of consumer electronic products such as mobile phones. However, wireless chargers have disadvantages such as low charging efficiency and large heat generation during charging. In order to improve charging efficiency and ensure safe use, the current mainstream solution is to attach magnetic spacers to the back of the wireless charger transmitter and receiver coils.



The wireless charger transforms a 220V power supply into a sympathetic electromagnetic field, and then after the sympathetic electromagnetic field generates a sympathetic electromagnetic field, the sympathetic electromagnetic field becomes a current for charging; when the sympathetic electromagnetic field encounters metal, the product will produce electronic eddy current, and the electronic eddy current will tend to the metal. The skin effect generates heat energy on the metal, which reduces the charging efficiency and wastes electrical energy. And it interferes with the main board of the circuit and affects the normal operation of the whole charger. Using a wave-absorbing material to provide a loop for the sympathetic magnetic field through high magnetic flux, which can improve efficiency

ferrite sheet:https://www.goodsmaterial.com/

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