What are the advantages and disadvantages of wireless charging mobile phone

As nokia Lumia920, Google Nexus4, samsung S6 and other models have added wireless charging function, this year's apple's annual flagship phone iPhoneX also added wireless charging function, so wireless charging is good? Here for you to bring the advantages and disadvantages of mobile phone wireless charging analysis, a look.

Principle of wireless charging

The concept of "wireless charging" sounds pretty cool, and it seems to have the same impact as mobile phones replacing fixed lines, digital instead of film, and WiFi instead of cable. At the sight of the word "wireless," we automatically think of words like "break free" and "freedom." However, the seemingly cool concept of wireless charging is not technically complicated, as the tesla scientist proposed a hundred years ago.

At present, the working mode of most wireless chargers is that the coil in the charging head rotates to drive the coil on the back of the phone to generate power.

Advantages of wireless charging

High force,

Compared with the traditional wired charging method, the wireless charging method is undoubtedly more cool. It does not need to insert a long data line into the phone, but only needs to put the phone on the charging board and take it away when it is fully charged.

In addition, with the development of wireless charging technology, some wireless charging bases similar to charging bowls begin to appear. AirPower, shown on the PowerPoint for apple's fall event this year, is a similar device that can charge multiple devices like the iPhone, AppleWatch and AirPods at the same time.

In addition, if wireless charging technology can be popularized, the charging experience in public places will be greatly improved in the future. At the airport, for example, a user with a dead cell phone can simply leave it on a table with wireless charging.

Disadvantages of wireless charging

The power of small

Wireless charging cannot replace wired charging. The biggest obstacle is power. At present, in the smart phone, quick charge power is generally from 18W, high can reach 22.5W; Wireless charging tops out at 15 watts, and many phones come in at 7.5 watts. First, wireless charging lags far behind.

In the early stage of the development of smart phones, 5W charging head is the standard configuration of mobile phones, and the battery capacity is generally below 2000mAh. At this time, the wireless charging function with 5W power may still have room to survive. But today, the 3000mAh phone's battery capacity is mostly pass-quality, and the speed of wireless charging means it will not be widely adopted.

bound

In addition, the current mainstream wireless charging can not achieve the real sense of "unfettered". The technical principle of wireless charging has been mentioned before. When charging a mobile phone, it needs to be attached to the charging base and cannot be moved at will, which will restrict the user even more. At the very least, the mobile phone can be operated and used normally when it is connected to the data cable for charging, and even can be charged while playing on the bed. But on a wireless charging dock, the operation is awkwardly simple.

Large volume

Generally speaking, the wireless charger dock is larger and heavier than the cable charger, which is obviously more convenient for business or travel.

The price of your

What's more, the wireless charger needs to be purchased by users themselves, and it is not cheap. The cheapest charger on apple's official website costs nearly 500 yuan.

conclusion

For users, the wireless charging function of mobile phone is a little weak, and wireless charging is more like a icing on the cake. In the absence of a revolutionary breakthrough in wireless charging technology, there's not much point in spending a few hundred bucks on a wireless charger.

The page contains the contents of the machine translation.