Depending on how you define the damage to the mobile phone, the cycle life of the lithium battery of the mobile phone is limited. Therefore, whether it is wireless charging or wired charging, this loss is inevitable.
At present, there are three main types of wireless charging: electromagnetic induction, magnetic field resonance, and radio waves. Among them, electromagnetic induction technology is widely used in mobile phone wireless charging solutions because of its higher charging efficiency and simpler circuit structure.
So, how is this wireless charging of mobile phones realized? First, you need to install a coil on each of the phones and the wireless charger. When the coil of the charging board is powered on, a constantly changing magnetic field is generated.
When we put the mobile phone on the charging board, the coil on the back cover of the mobile phone will sense the change of the magnetic field and generate a current, and then the mobile phone will convert the current into direct current to charge the mobile phone battery.
At present, the effective charging distance of wireless charging of mobile phones is about 10mm. Therefore, the wireless chargers on the market generally need to place the mobile phone on the wireless charging board and align the positions to work effectively. Just like wired fast charging has various protocols such as QC, PD, FCP, VOOC, etc. In fact, wireless charging also had various charging protocols earlier, which caused a great obstacle to the promotion of wireless charging. In order to solve the problem of versatility, major consumer electronics manufacturers have formed two wireless charging standard organizations AirFuel standard and the Qi standard.
In recent years, Xiaomi, Apple, Huawei, etc. have successively launched a variety of devices that support wireless charging, including Mijia 30W wireless fast charging, Apple wireless fast charging, and Huawei MATE30 wireless fast charging. They are all on top of the established Qi standard, which dominates. Of course, while wireless charging looks great, there are a few drawbacks that hold it back. For example, if the charging distance is not far enough, you need to be close to the charging device to maintain the charging. There is also a low energy conversion rate, generally around 80%. For example, a 30W wireless fast charging device generally only has a charging efficiency of 24W after loss, and 20% of the energy is dissipated in the form of thermal energy. Therefore, some mobile phones may get hot on the back after wireless charging. Since then, it still has a certain impact on the battery.
CowinLink mainly develops and manufactures Qi standard wireless chargers with reputable solutions to keep every wireless charger safe to use. Welcome to visit our factory in Shenzhen and we can develop unique wireless chargers for all of you.