NiMH No.7 battery.Preliminary analysis of automotive wireless charging technology

　　For big things like electric vehicles, currently, due to different manufacturers’ standards, various interfaces actually coexist. So is there a more convenient way to charge multiple electric vehicles than using the same interface standard? This is the wireless charging technology we are talking about today.

　　Nowadays, everyone has a lot of electronic gadgets in their hands. From time to time, colleagues will go around to borrow various chargers. For big things like electric vehicles, currently, due to different manufacturers’ standards, various interfaces actually coexist. So is there a more convenient way to charge multiple electric vehicles than using the same interface standard? This is the wireless charging technology we are talking about today.

　　Q1: What are the methods of wireless charging? What is the principle?

　　A: Common forms include induction type, resonance type and microwave transmission type, all of which use the principle of electromagnetic induction.

　　In fact, there are many types of wireless charging currently classified, such as induction, resonance, microwave transmission, etc., but generally speaking, their basic principles are the same, which is to use electromagnetic induction of alternating electromagnetic fields to achieve Wireless transmission of energy.

　　Inductive wireless power transmission is currently a relatively mature technology. Many mobile phone wireless charging and even our common induction cookers use this principle. Since the space of digital equipment is small, the receiving coil is also small, and the power of the charging equipment is small, the charging distance is usually short (even contact with the charging base is required), but the relative electromagnetic radiation is also small.

　　The resonance type is a type of charging technology currently being developed by the famous MIT. It is not complicated to say. They use the phenomenon of electromagnetic induction and the principle of resonance to improve the efficiency of wireless charging. The distance of resonance transmission is longer than that of ordinary induction. The model is farther away, and MIT is currently conducting research on miniaturization-for an electric vehicle that is several meters long, the technical pressure in this area is not too great.

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