How does the iPhone charge wirelessly across a 5cm table?

For a long time, the iPhone's battery capacity is far lower than the Android's battery capacity. It has always been criticized. Among the many functions of the upcoming iPhone 7, wireless charging is one of the most anticipated.

Apple's series of products, the first to adopt wireless charging technology is the first generation of Apple Watch, although this watch charging time is not long, it takes only more than one hour to fully charge, but the maximum life after full power is also a day and a half, if You can't do it every day, so it means that the afternoon of the next day will take a black screen. . .

Some professionals stated that even if Apple introduced wireless charging, it may encounter new confusion. Apple's various interfaces and communication systems are different from the industry standard. Although Apple Watch supports wireless charging technology, it does not support the traditional sense. Wireless charging.

In other words, Apple suspected to modify the internal software stack, the purpose is to let Apple Watch only support the official wireless charger, want to Apple Watch charge, must be compatible with Apple's official charge line can be used, namely MagSafe magnetic suction wireless charging.

Of course, such behavior is not really true to standards, but condemnation does not have much effect, because such standards are generally not enforced. Non-mandatory standards may be common to other home chargers if they are implemented, but it doesn't matter if they aren't implemented—and Apple does not have the ability to perform, leading to further fragmentation of wireless charging applications.

Behind the lack of promotion of wireless charging standards is that there is not yet a particularly strong standard worth vendors to join. Apple chose Qi may be purely because no other better standard is available. . .

There are now four different kinds of technical means for wireless charging: electromagnetic induction, magnetic resonance, radio waves, and electric field coupling. Electromagnetic induction is one of the most widely used applications. The Qi standard also uses this technology. However, the electromagnetic induction method requires a closer distance between the device and the charger - no more than 10 cm.

In principle, magnetic resonance and radio wave charging can expand the charging distance even more; even some devices can transmit power across the desktop. However, taking into account the possible side effects of radiation, radio waves are not widely used, and sometimes artificially limiting the output power.

Titanium geek Xiaobian recently found a device called “Cairui Wireless Charger” on Taobaozhong. It is said that it is a wireless charging solution using magnetic resonance technology. Since this technology has penetrating power, it can be The device is arranged under the table and wirelessly charged on the desktop, without any trace of the charging base.

According to Wikipedia's explanation, magnetic resonance technology can achieve a vertical charging distance of 0-50 mm, while the magnetic field can penetrate most materials except metal and magnetic materials, including common stones, wood, glass, human body, etc. The change is that wireless charging transmitters and receivers do not need to be attached and can achieve relatively long distance transmission.

"Kairui Wireless Charger" uses a wireless charging phone case and transmitter to match the phone case and charging interface. When an ordinary Apple phone is put on the phone case, it can be transformed into a black technology device that supports wireless charging.

In the past, the efficiency of wireless charging has been lower than wired charging, and it is only possible to ensure that “the rivers and lakes are in a hurry” to ensure that they continue to power. Thanks to the efficient power system design, the charging efficiency of the Galaxy Core Charger is basically the same as the wired charging speed. The power from 0 to 100% only takes more than one hour.

"Kai Rui Wireless Charger" is now able to match Apple's iPhone6 ​​and iPhone6 ​​plus series, mobile phone case fit iPhone6 ​​has a golden color, silver and rose gold color matching mobile phone color, and the transmitter has gold, white and black 3 The colors are optional and can be seamlessly embedded in any type of home environment.

On July 18th, this platform will be signed by TaobaozhongChip, which is jointly launched by Taihuo Huofeng, a smart hardware incubator platform. The initial price of the mobile phone shell and charger is 268 yuan.

On the other hand, the "Cario Wireless Charger" solves the charging problem in a single scenario. If wireless charging devices can be installed in all public places in the future, then you don't need to run around with the charging treasure.