When we buy chargers, we always consider a problem. That is the charging efficiency of the charger. Chargers with higher charging efficiency are our best choice. What factors affect the charging efficiency of wireless chargers? 

The wireless charging system is divided into a transmitting end and a receiving end, so the factors affecting charging efficiency have to be found from these two aspects.

We will first explore from the transmitter, that is, the wireless charger. The principle of all wireless chargers in the market is similar, but the advantages and disadvantages of each design scheme and the loss of each contact in circuit design directly affect the charging efficiency. For example, the following points:

1. Transistor loss conduction internal resistance is small, the conversion efficiency of the system is high. If the internal resistance is low, the cost will be relatively high.

2. The transmitting end and the receiving end cannot be matched in time, resulting in loss. The power output of the transmitting end can be flexibly adjusted according to the receiving end. Excessive transmitting power will result in excessive power loss when matching with the receiving end.

3. Switching Power Loss at Transmitting End The transmitting end is a switching power supply. Switching drive signals cannot be turned on or off synchronously. The system will generate large switching power loss at this section.

4. Electromagnetic coil losses Electromagnetic coils used in wireless charging field are mostly divided into single layer and double layer. The use of double-wire and double-layer coils is more beneficial to the improvement of the efficiency of the whole system, but the coils themselves have power loss.

5. Other losses.

Looking at the transmitting end, let's look at the losses on the receiving end.

The receiving end of the wireless charging system has the greatest influence on the wireless charging efficiency. Although the receiving end is the induced end, the transmitting power of the transmitting end is flexibly adjusted according to the receiving end.

The situation is as follows: during the working process, the transmitting end communicates with the receiving end in real time, and the transmitting end adjusts the transmitting power in real time through the power feedback information of the receiving end. However, the feedback information of the receiving end is constantly changing due to its load factor, which requires the transmitting end to adjust the power output in time. It is during this process of constant adjustment that there will be too much power loss.

These are the factors that affect the charging efficiency of wireless chargers. If you are interested in these contents, you can visit our official website to learn more. Next time we will explore how to improve the charging efficiency of wireless chargers.

Source of this article:https://ymp-hk.com/