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What is the principle of wireless charging technology for mobile phones?

Today's smartphones are developing rapidly. In the past, we didn't even think about wireless charging, but now it sucks. So why the principle of wireless charging? I'll talk about it today.

Current wireless charging solutions are but three.

1. Electromagnetic induction charging

This scheme is by far the most widely used. It uses the induced magnetic flux generated by both the power source side (charging base) and the power receiving side (mobile phone) to transmit power. This circuit configuration is compared with the other two circuit configurations. Simple and low cost. However, the high efficiency also brings the inconvenience that the transmission distance is short and is affected by the placement position.

2. Magnetic resonance transmission

This is a wireless charging solution that is currently being researched, but has not been commercialized so far. This is because the resonators at both ends generate magnetic field resonance for power transmission. In simple terms, they vibrate at a certain frequency, and they can exchange energy with each other. The advantage of this is that the transmission distance is long, but the efficiency is low, which is one of the reasons why it cannot be generalized.

3. Radio wave charging

This program is now a mature program. It consists of a microwave transmitting device and a receiving device. It senses radio wave energy bouncing off walls and regulates voltage. This solution is more convenient, just install a transmitter on the wall plug and receiver.

Post time: May-27-2022