Wireless charger heat problem
Publish Time: 2022-05-27 Origin: miman
As we all know, the existing Qi protocol wireless charging is an inefficient charging method.
Unlike wire charging, the conversion rate of wireless charging is much lower than that of wire charging, which is the root cause of the heat generated by wireless charging. A large portion of the electrical energy is released as heat. So why does heat affect the charging rate? It depends on the phone's protection mechanism. Excessive temperatures can affect the life of PCB components and can also cause permanent damage to the lithium battery. So most cell phones will take measures to reduce the heat after monitoring that the temperature exceeds the limit, such as charging to reduce power. This is why the heat has somewhat prevented the popularity of wireless charging as convenient and fast as wired charging. As a qi wireless charger manufacturer, we are most qualified to answer the qualification question.
So throughout the development of wireless charging, the major manufacturers have made what improvements to the wireless charging heat dissipation? Basic can be divided into the following categories
1 Active heat dissipation
Through the body of the small fan will accumulate active heat discharge, will produce additional mechanical components and noise, but the most excellent temperature control.
2 Passive heat dissipation
The main heat-generating components (coils and PCBs) are placed in contact with a large metal heat sink, and the heat sink is used to ease the time for the temperature to reach a limited value and dissipate the heat using air convection.
3 Separation of heat sources
The main heat-generating components are placed separately. For example, the lift circuit is arranged in combination with the input terminals (USB, Type-C), and the only part in contact with the phone is the coil so that heat can be quickly discharged through the back of the coil.
If you want to buy a third-party magnetic charging, you can pay attention to the size of the charging cable Type-C terminal, like Anker's 7.5W MagSafe has a massive Type-C terminal. If you have read the above article in detail, I think you can understand the significance of this large Type-C