Wireless charging technology is harmless to human health. The * * * vibration principle used in wireless charging is magnetic field vibration, which is only transmitted between coils vibrating at the same frequency, and other equipment cannot accept the band. In addition, the magnetic field used by wireless charging technology is harmless to human body.
The relevant standards for wireless charging have not yet been issued, but according to the specification documents of the Wireless Power Alliance, the working frequencies of wireless charging products are set at 50hz and 60hz, and their electromagnetic radiation level is theoretically equivalent to that of ordinary small household appliances, and this standard is lower than the electromagnetic field exposure limit of products exposed to the public issued by ICNIRP, which has been recognized by more than 35 national expert committees.
However, some experts said that it is not only wireless chargers that generate radiation, but also computers, mobile phones, WiFi, televisions and microwave ovens, so there is a problem of overlapping radiation. Some experts reminded that when using products with electromagnetic radiation, it is best to keep a proper distance and develop the habit of washing hands and faces after use, which can effectively reduce the adverse effects of electromagnetic radiation on health.
2. For mobile phones:
Under normal circumstances, it will not hurt the mobile phone. The current working frequency of wireless charging is below 1M, which will not affect the cell phone signal. Wireless charging has no effect on the life of mobile phone battery, which is basically the same as wired charging, but the speed is lower, but the energy conversion rate of wireless charger is still higher, which saves energy.
Extended data:
Misunderstanding of wireless charging:
First, charge for free anytime and anywhere.
Because wireless charging avoids the trouble of carrying a charger, consumers are full of yearning and expectation, which is understandable. However, due to technical limitations, the current standards for wireless charging are not uniform, so not all mobile phones are suitable for wireless charging boards. Just like the three standards of 3G technology of operators, the three wireless charging technologies are not interoperable at present.
For example, if Starbucks coffee shop supports Apple's wireless charging mode, consumers using Nokia phones may not be able to charge wirelessly. Whether a technology dominates the world or there is competition between them is good, which needs time to verify according to market development.
Second, wireless charging wastes electricity.
According to Nokia, the current energy consumption of wireless charging equipment is reduced, and the received energy can be kept at 70%, which is equivalent to wired charging. Moreover, wireless charging devices are all smart devices, which can automatically identify whether the smart phone is fully charged, so it is more environmentally friendly than traditional chargers that cannot identify whether it is fully charged. Some analysts said that due to the intelligent stop function, wireless charging can even make the energy utilization rate reach 98%.
References:
Amazon-electromagnetic radiation protection regulations