Xiaomi is here to “charge over the air”!

Xiaomi is here to "charge over the air"!

A message has been swiped! Xiaomi Chairman and CEO Lei Jun announced on his WeChat public account that Xiaomi has officially released the air charging technology and is the first to implement it on Xiaomi 11.

Xiaomi is here to "charge over the air"!

What does it mean to charge in the air?

Not only is there no line, but within a certain range, the user can walk around with the mobile phone without affecting the use and charging process of the mobile phone.

Xiaomi has developed an air charging pile by itself, and charging mobile phones in air is realized by this charging pile.

According to Lei Jun’s introduction, the core of Xiaomi’s air charging technology lies in space positioning and air energy transmission. The self-developed aerial charging pile has built-in 5 phase interference antennas, which can position the mobile phone in millisecond space and accurately detect the position of the mobile phone. The phase control array composed of 144 antennas transmits millimeter waves to the mobile phone through beamforming.

On the mobile phone side, Xiaomi has also self-developed the miniaturized design of the antenna array, with built-in “beacon antenna” and “receiving antenna array”. The beacon antenna broadcasts position information in the space field through low power consumption. The receiving antenna array composed of 14 antennas converts the millimeter wave signal emitted by the charging pile into electric energy through a rectifier circuit.

Lei Jun said that the current Xiaomi air charging technology has achieved 5 watts of long-distance charging for a single device within a radius of several meters. Not only that, multiple devices can also be charged at the same time (each device supports 5 watts), and even foreign objects will not reduce the charging efficiency.

It sounds sci-fi, but it has indeed become a reality. It must be said that this technological breakthrough will bring another revolution in mobile phone charging, and will inevitably have a profound impact on the wider use of electrical appliances.

1. Mobile phone charging development 3.0

1. Mobile phone charging development 3.0

Looking back, we can find that from the big brother to the smart phone, the change in charging methods is also an important manifestation of technological progress. A simple division of the evolution of mobile phone charging methods can be divided into three stages.

1.0, wired, from fighting individually to unifying the world

The 1.0 stage, the wired charging stage, actually accompanied the development of the mobile phone market for a longer period of time. If further subdivided, it can be further divided into two parts.

First of all, the major manufacturers formed their own groups, and even different models of mobile phones from the same manufacturer used chargers of different specifications and different charging ports, and the chargers at that time only had a simple charging function.

Such as Nokia’s round hole charging head, Samsung’s long strip interface and so on. When Nokia, Samsung, Sony Ericsson, Blackberry, HTC and other brands competed for the hegemony of the first generation of mobile phones, there were many strange-shaped special plugs, and major manufacturers made customized charging ports for their mobile phones.

Therefore, one of the biggest pain points of mobile phone users at that time was that if they did not bring a mobile phone charger when they went out, they were likely to lose contact with the outside world after the mobile phone’s power was exhausted.

With the development of technology, the data transmission function of mobile devices has become a rigid demand that must be taken into account. The second generation of chargers with the charging function and data transmission function, the Mini USB socket charger, was born, not only for mobile phones, but also for many digital products. This kind of charging interface is used.

In the era of smart phones, the Micro USB interface that was used for data transmission in the era of feature phones began to become the protagonist and was widely used in Android smart phones. Compared with the Mini USB socket, Micro USB is smaller and thinner, and with the continuous upgrade of USB technology, the data transmission speed is getting faster and faster, and its combination with the charging function has quickly become the mainstream, which is realized in the Android smartphone market. A unified standard.

The same is true for the USB Type-c interface that appeared after this, but the Type-c interface has a more user-friendly upgrade compared to Micro USB, that is, the interface is easy to use, and the design of the Type-c interface can be passed Larger current supports the needs of high-power charging and dual-phase power supply, faster data transmission, and can be expanded to a variety of audio and video interfaces to support 4K resolution.

2.0, wireless charging

When people use smart phones more and more in their daily work and life, people find that wired charging will often bring users a very inconvenient experience. At this time, wireless charging technology appears. In the last three or four years, wireless charging has become an essential capability for almost every mobile phone manufacturer, but in fact, there was already a mobile phone wireless charging technology earlier, but because the public acceptance was not high at that time and because of the In the early days of technology, the charging speed was far from comparable to wired charging.

As all mobile phone manufacturers start to focus on wireless, the technology has become more mature, the power has been greatly improved, and more and more can meet the actual needs of people. Wireless charging has achieved greater popularity in different usage scenarios, such as car wireless Charging, desktops with wireless charging in public areas, etc.

3.0, charge separately

Coming to the 3.0 stage, in fact, the upgrade and breakthrough of this technology means that people have begun to look at and treat mobile phone charging from another level. For example, charging is essentially a kind of energy transmission, wired charging and Contact wireless charging uses a tangible medium or substantial contact for energy transmission, while space charging uses technology to break the limitations of the medium. It also reflects that people’s control of technology is becoming more and more precise and in-depth, and it may take a lot of time to popularize it on a large scale, but its significance is definitely not limited to the convenience of mobile phone users.

2. Every upgrade is to solve the pain point

Every upgrade and iteration of mobile phone charging methods is based on user experience to solve product pain points.

In the era of feature phones, mobile phone chargers are a kind of high consumable. The most common phenomenon is that every time users change their phones, they will have an extra charger with a different interface. Different brands use different charging interfaces. , Even different mobile phones of the same brand have different interfaces. At this time, the user’s pain point is that the charger needs to be re-purchased according to the phone model. When the battery of the mobile phone is exhausted, look around for the same charger of the same mobile phone. The serious shortage of charger versatility is the biggest pain point of mobile phone charging in the era of feature phones.

With the increase of mobile phone functions, users also have more needs, such as data transmission. A mobile phone has both a data transmission interface and a charging interface. This means that when a user buys a mobile phone, many times they will have both a charger and a data transmission line. The application of Mini USB solves the needs of charging and data transmission at the same time. It does not seem obvious to reduce one line, but it reduces the trouble for users.

In the era of smart phones, Micro USB and USB Type-c have been iteratively upgraded in a short period of time. On the one hand, they have solved the problem of commonality between different brands of mobile phones (except iPhone), while also greatly reducing consumption.

The popularity of wireless charging technology provides an effective solution to the needs of mobile phone users for the convenience of using mobile phones in the era of smart phones, because smart phones are no longer just a communication device, but have also become people’s daily work and An important tool in life. Charging a mobile phone is one of the most frequent behaviors of smartphone users in daily use. The existence of a charging cable often brings users a very inconvenient experience.

In addition, wireless charging can also solve the needs of users for convenient charging in more scenarios. For example, for car owners, charging mobile phones means connecting a separate charging cable to the car, but now there are not only cars with wireless charging capabilities. Mobile phone holders, some new models have their own wireless charging modules.

Including the “fast charging” that has been continuously increased by major mobile phone manufacturers in recent years, it is also a solution to the demand pain points of smartphones that consume fast power and users are increasingly dependent on smartphones.

The birth of the non-contact charging method of air charging means that in more scenarios and different mobile phone applications, users can obtain greater convenience and flexibility, and can truly get rid of wired charging and contact wireless charging. Recharge. Compared with wireless charging, air-to-air charging is bound to be better integrated into more usage scenarios and bring users a better experience.

The change in the charging method of mobile phones has really developed from the initial minor change in the interface to the current overall logical change. It is also a process of countless minor upgrades and superimposed qualitative changes. This process will be driven by the comprehensive and rapid progress of technology. Move forward at a speed.

3. Every technological innovation is the general trend

In fact, air-to-air charging technology has long been studied, and now it is used by Xiaomi to charge mobile phones. In fact, like all technological innovations, it is the general trend.

About half a year before Xiaomi released air charging, someone in the industry told me that air charging is an inevitable trend, and he himself is thinking about solutions to this problem.

After the news of Xiaomi’s release of air charging came out, the author also contacted this industry insider again, who said that this is a very meaningful technological innovation. As far as the application of mobile phone charging is concerned, the fast charging and wireless charging applications in the past period of time shortened the distance between the mobile phone and the user through a type of hardware, but at the same time, it also brought the various hardware around the user. increase.

For example, the power strip with wireless charging function available on the market now solves the problem of the distance for users to charge mobile phones and the problem of connecting the charging cable, because this wireless charging power strip can be made very delicate and beautiful, and can be separated from the user closer. Air charging means that while shortening the distance between the user and the mobile phone, it also makes the charging device farther away from the user, which to a large extent makes the space in which the user lives more comfortable.

Moreover, with the popularization of various smart devices and smart home products among the population, the application of space-based charging technology will soon not be limited to mobile phone charging, and the application scenarios of space-based charging technology in the future will also be very extensive.

It can be said that air charging is an inevitable trend after wireless charging technology has become increasingly mature and popular.

Written at the end:

Whether it is the evolution of the charging interface or the change of charging methods from science fiction to reality, the meaning behind all this lies in technological innovation based on user experience.

This is not only the ability necessary for current technology companies to continue to maintain their user potential, and the market’s requirements for companies, but also a key issue that all traditional companies must think about.