Why hasn't wireless charging caught on?

Since the beginning of this year, with the explosion of various black technologies of iPhone, "wireless charging" technology has also attracted much attention from all walks of life. In fact, this black technology was pushed to the forefront of technology trends at the beginning of its launch. After a period of experience, many users have become disillusioned with this technology because it does not bring a better charging experience.

In fact, wireless charging is not more convenient than wired charging, because most wireless charging requires additional equipment. That means still plugging a receiver into your phone. It is worth noting that there are three types of wireless charging currently on the market.

Magnetic induction wireless charging

As far as the current situation is concerned, the most common wireless charging technology on the market is magnetic induction wireless charging. The principle of magnetic induction corresponds to the theory of electromagnetism, which has a history of more than one hundred years. As early as 2009, the Palm Pre phone began to use magnetic induction wireless charging technology. It is understood that Palm was once brilliant in the PDA field, but as other smart phone brands continue to rise, it gradually faded. Even so, Palm made a technological breakthrough in this phone, still let people now marvel. Although it is a wireless charging technology, it still cannot get rid of the bondage of other accessories. It is reported that the Palm Pre needs to be combined with a wireless charger called "Touchstone" to enable wireless charging.

Since then, other mobile phone brands have followed the trend and launched similar charging technology. Such as Nokia Lumia 920, Samsung S8 and so on. In addition to the inconvenience of requiring accessories, there is a big problem with this charging technology - the slow charging rate. Some users reported that a mobile phone with a battery capacity of about 3000mAh is full of wired fast charge technology for about an hour, and the time required to use the latest wireless charger is more than three hours. This is another major reason why wireless charging has not caught on.

Magnetic resonance wireless charging

In essence, with resonance wireless charging technology is still based on magnetic induction technology. However, compared to the magnetic induction wireless charging technology mentioned earlier, the coil coupling of the wireless charger of this technology is better. Not only that, magnetic resonance wireless charging technology has greater power and longer charging distance. When the mobile phone is charging, the freedom of placement is greater, and multiple mobile phones can be charged at the same time.

It is worth noting that the power of the charging base required for magnetic resonance wireless charging is much greater than the coil in the mobile phone, so in general, the base volume of such wireless charging devices is generally larger. Due to the large power and long transmission distance, this base can be hidden under the table. The phone can be charged in the air, that is, the phone can be charged as long as it is placed on the table.

Recently, a company named WF-Charge developed a new wireless charging device, the biggest progress of this device compared to the wireless charging device on the market today is that it can support the charging of mobile phones and tablets within 10 meters, without the need for the phone to check the charger, let alone contact with the device. This most likely uses magnetic resonance wireless charging technology.

Wireless charging of electromagnetic wave

Compared with the above two wireless charging technologies, electromagnetic wave wireless charging technology is the most in line with people's imagination of black technology. It works by receiving energy like a wireless signal and then charging the phone. In fact, if you want to achieve electromagnetic wave charging, the power requirements of the transmitter are very large, because to solve the problem of long-distance energy divergence, of course, whether this high-power electromagnetic wave will cause harm to the human body, is still uncertain.

To sum up, there are still many shortcomings in wireless charging technology. As for whether the future wireless charging technology can achieve technical breakthroughs, or whether the future wireless charging technology can be widely used, let's wait and see!