With more and more portable electronic products into people's lives, these products bring us unlimited life at the same time, but also brought some small trouble. Such as full house all kinds of large and small charger, messy connection and so on. But accompanied by super science fiction wireless charger, the problem has been a very good solution.
Wireless charger refers to the use of electromagnetic wave induction principle of charging equipment, the principle is similar to the transformer. In the send and receive side of a coil, the transmitter coil connected to the wired power to produce electromagnetic signals, the receiver coil to send the end of the electromagnetic signal to generate the current to the battery charge. With it, you just put the phone on its platform, you can complete the charge.
1. Wireless charger market analysis
According to the survey of North American and European markets, North American and European markets have shown great interest in wireless charging products, with 81% of consumers expecting a variety of electronic products to charge at the same time. This demand will undoubtedly stimulate the rapid development of wireless charging products market.
As early as a few years ago, wireless charging products have entered the market, more let everyone know is the iPhone wireless charger, this product has been sold in Japan for more than a year, as well as Hitachi Maxell has also launched in line with WPC standards Of the iPhone series.
In addition, as early as CEATEC2010 show, Japan NTT DoCoMo company launched a wireless charging phone. Currently HTC, Motorola, LG's listed products also have some wireless charging function, and Shenzhen Sang Fei Communications has also Qi standard wireless charging mobile phone sales in China.
Although the current wireless charger market is mainly concentrated in Japan and Europe and the United States, but with the increase in smart devices and equipment needs diversification needs, its market share will be greatly improved. ISuppli believes that the next few years will appear electronic products equipped with wireless charging function of the wave, including mobile phones, PC, digital cameras and other electronic products, will completely get rid of the shackles of power supply lines, the whole line to open the application of the technology popular.
Market research firm Markets and Markets a report that the global wireless charging market in the next five years will be a blowout growth, by 2017 will form more than 7 billion US dollars of the market. While in 2011 this figure is only $ 457 million, the annual compound growth rate is expected to 57.6%.
Visible, wireless charger in the next five years are worth looking forward to.
China is the world's largest wireless mobile communications market, for the convenience, ease of use, interoperability, compatible wireless charging products will be geometric level of demand growth. Wireless charger industry, the great potential for development, but also to promote Chinese enterprises to actively participate in and research the market, effectively enhance the enterprise's product width and competitiveness.
2. New changes brought about by wireless charging
2.1 Wireless charging brings new changes to our lives
Compared with the traditional wired charging technology, wireless charging has four major advantages: first, convenient. All the electrical equipment can be free to move freely, go out activities or travel no longer need to carry the charger and power cord. Second, one to many charge. Wireless charging can not only achieve one-to-many charging, but also once a launch device can give coverage of all the electrical equipment to charge the idea of becoming a reality, it can achieve a certain range of charging.
Third, smart. For different electronic products, the power interface can automatically correspond to the need to charge, the transmitter and receiver chip will automatically start working, full of electricity, the two sides will automatically shut down. It can automatically identify the different equipment and energy needs of the "personalized work", effectively ensuring a steady stream of energy supply, improve equipment continuity. Fourth, safe. There is no exposed connector, leakage, running and other security risks are completely avoided.
Many mobile phones, tablet PCs, and even the remote control handle of the Wii console, just put on the same charging board, you can achieve charging, a charging board can replace the full drawer different charger; public places to install a few pieces of charge Board, you can charge all the equipment, to lift the embarrassment without a charger, I believe that all this is the future application of practical scenarios.
The benefits of wireless charging is not just the development of a single wireless charger market, but the wireless charging platform to build, that is, public mobile device charging station will be possible to become a reality, it allows you in the airport, McDonald's, cafes, etc. Public places charge anytime, anywhere.
Although the current wireless charging is mainly contact charging, but the future is likely to be empty charge, perhaps one day, in the absence of data cable connection, the wireless charger can not only charge the device, you can also achieve synchronization data and data transfer Features. Just to achieve these functions, we must first solve the problem of low charging efficiency, which also takes some time.
2.2 wireless charger will not replace the cable charger, power adapter, etc.?
In order to avoid unnecessary waste and generate more e-waste, China is implementing a unified standardization of mobile phone charger ports. For wireless charging technology, this will be the greatest degree of popularity, Moreover, not only can use the phone, digital cameras, tablet PCs, notebooks can also share this charging device. Although the performance of wireless charging equipment to receive about 70%, and wired charging equipment equal, but it has a full automatic shutdown function, to avoid unnecessary energy consumption. And this efficiency is increasing continuously.
With the progress of wireless charging technology, once the wireless charger is gradually popular, then the cable charger, power adapter, etc. will not be replaced by the people held as a portable mobile power will be affected?
Some experts believe that once the wireless charger is gradually popular, wired charger, the power adapter will be replaced slowly. While the mobile power is not affected, but it may be combined with the wireless charger.
Some experts believe that cable chargers and power adapters can not be replaced, only partially replaced. Because he thinks the cable charging has its need for existence. It is expected that by 2015, the wireless charger can only be less than 5 watts, 9 volts above the system is not much impact. But the mobile power supply may be replaced, because once the cable charging is popular, many public places can be charged, then carry mobile power is meaningless. Wireless chargers are likely to be combined with mobile power. Mobile power and wireless charger is a complementary product, it will be a certain impact, which is the mobile power manufacturers can be said to be an opportunity is a challenge. If these manufacturers can not keep up with the development of wireless charging, then they are likely to be marginalized in this competition.
There are experts believe that cable charger and power adapter can not be replaced, because the wireless charger cost is high, it is difficult to promote the impact of mobile power is unlikely.
On this topic, each has a view of each family. But in any case, compared to messy variety of charging lines, the more convenient and practical wireless charging design has been more and more manufacturers are optimistic, review in 2012, many mobile phone manufacturers have begun to wireless charging function as a future mobile phone design In the main event. This is undoubtedly the development of wireless chargers to create favorable conditions.
3. Wireless charger coil in the wireless charging application
Wireless charging technology mainly uses electromagnetic technology, the transmitter will be converted into electromagnetic current, the phone through the built-in chip receiver will be converted into electromagnetic current for the mobile phone charging. To achieve the wireless charging of mobile phones and other products, there must be two parts: first, the transmitter. Connected with the power supply, responsible for the transmission of electrical energy to a wide space; second, the receiver. Generally installed in electronic products, to accept the power. A set of planar coils is used in both the transmitter and the receiver.
The material of these plane coils is mainly some common soft ferrite materials. They are mainly to play the role of effective magnetic field.
The inductance coil on the wireless charger plays the role of vibration frequency, which accounts for 10% of the cost of the entire charger. Wireless charger on the coil requirements are not very high, but it must be deployed with the wireless charger can be very appropriate, in addition to the accuracy of its wireless charger, the parameters will have more precise requirements.
The two inductive coils, one that is accepted, one is fired. Wireless charger requirements of their power, loss is small, requiring product parameters and accuracy are not very high.
Cell phone coil on the magnetic material requirements are high, because it is inside the disk in the use of very easy to break. And the magnet from the earliest manganese zinc to nickel zinc, and then to the current soft disk, in the damage is very good.
Wireless charger used in the coil, in fact, is an inductor, but its shape is more special only. At present, the wireless charger on the coil this piece is no special requirements, it is to solve the problem of the entire circuit, the key is to put the effective constant and effective power to do it.
At present, the wireless charger is not a big breakthrough, the loss is too large, the conversion efficiency is too slow, did not well reflect the role of wireless charging.
Wireless charger manufacturers in the choice of magnetic coil manufacturers, the first look at the magnetic coil manufacturers can not make a consistent product, because the product consistency of the wireless charger power is very important; second depends on whether the delivery on time; Finally, also focus on the size of enterprises, because some small workshops supply is not large.
4. Industry views on the wireless charger industry
Although the principle of wireless charging has long been confirmed, but because of wireless charging technology and other aspects of the problem, but also a few years ago, the wireless charger industry was really put into commercialization, and then also attracted people's attention. So, for the development prospects of the wireless charger industry, most of the industry that the future development prospects are very good, in the near future, not simply mobile phones and computers, can achieve wireless charging.

Within 5 years, it will be a very forward-looking area, and it will be a very popular industry before the battery capacity has yet to get a big break.
At present, Nokia, Philips, LG, Samsung, Sony Ericsson and RIM and many other well-known international mobile phone manufacturers are very supportive of this technology, the future of wireless charger will be vigorously promoted in the mobile phone industry, it was predicted that it may be bundled with the mobile phone sales The
The future of the wireless charger power will be more and more, this direction is certainly right. But the key to see the technology can not solve: 1. The scope of its wireless charging problem; 2. Power problem; 3. Receiving distance problem; 4. The radiation problem on the human body.
In addition to the mobile phone industry, the current development of the wireless charging application market also includes the furniture industry, telecommunications industry, the automotive industry, the toy industry, consumer electronics. And these areas also have this potential for development. But their development will be slightly slower than the phone, but also in the near future there will be. And this requires a wireless charger in the wattage to improve, or even the tablet computer can not be achieved.
In the final analysis, or is the wireless charger in the power is not high problem, to change this problem, wireless charger companies also need to work hard in technology.
In recent years, with the mobile phone and other mobile terminals for the power demand for energy growth, wireless charging technology has become a popular application, has become a portable electronic products in the field of international mainstream manufacturers competing to introduce a new focus. At present, the wireless charging technology has been the world's leading manufacturers of attention, especially mobile phone manufacturers have entered the field of wireless charging. Wireless charging has become the trend of portable electronic products, while the phone is recognized as the first universal standard wireless charging function, completely replace the conventional power supply products. Wireless charging As people yearning for the technology, is expected in 2013 will soon be fully operational in the global context.
With the wireless charging in the power, conversion efficiency, as well as in the loss of the reduction, the wireless charger is bound to usher in more and more beautiful tomorrow. Once the wireless charger market is booming, it will also drive the development of the magnetic components industry for the provision of coils for the wireless chargers, so the magnetic components companies should be well prepared to see the opportunities for the development of wireless chargers in the long term , Actively armed themselves, in product development, product quality, service quality and other aspects of reserve strength, waiting for the wireless charger market to open.