Development Characteristics of Wireless Charging Technology in Mobile Phone Field
As we all know, wireless charging technology has developed rapidly in recent years. Although wireless charging technology can be used in mobile phones, notebook computers, small household appliances and other fields, the largest market share is still in the mobile phone field. What are the characteristics of the development of wireless charging technology in the field of mobile phones? What are its advantages and constraints respectively?
First, the simple principle.
The electromagnetic coupling principle of high school physics is also familiar to the industry, and the technology extended from RFID is also easy to accept. The receiving end consists of one chip or two chips (eventually a single chip solution), with one end connected to the charging coil and one end connected to the battery. Many companies have begun to introduce series of chips, which will speed up the spread and popularization of wireless charging knowledge.
Because of its simple principle, it is relatively easy to make and understand. It is also relatively easy to be accepted by the public.
Second, the cumbersome process.
The extra space in the mobile phone, especially the smart phone, is difficult to make room for a large charging coil.
For this 40mm diameter circular coil, an inorganic magnetic material with a thickness of 0.8-2mm (i.e. 0.2mm for micro-navigation organic magnetic material) is added below to increase the thickness of the mobile phone. If this component is placed on the mobile phone circuit board, it will also occupy space and run on other components.
Therefore, all engineers who design mobile phone structures have headaches, which restrict or hinder the development of wireless charging products and become obstacles.
Some companies have introduced wireless charging receiving coils (antennas) with a thickness of 0.53mm, hoping to promote the popularization of wireless charging technology in mobile phones.
At present, smart phones are developing in the direction of small size and thinness. If the volume of wireless charging coil is relatively large, it will lead to an increase in the volume of smart phones, which is contrary to the development direction of mobile phones.
These are the development characteristics of wireless charging technology in the field of mobile phone chargers. Although it is still subject to many constraints. However, the field of mobile phone charging is ultimately dominated by wireless chargers.
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