The Research On Wireless Charging System For Mobile Phone

With the advent of the electronic information age,smart phones become more and more popular,the screen is growing,and the realization of the function is more and more.However,with a problem that is the battery power of mobile phones,as well as charging the kind of tedious data lines.Mobile phone interface is also the risk of water or into the dust,so we need to study a convenient and reliable charging method.Electromagnetic induction technology can be through the magnetic field coupling to the power from the transmitter to the receiver,and then charge the phone.In this paper,the structure of the technology,circuit design and coil coupling were studied in depth and designed based on electromagnetic induction mobile phone wireless charger.Firstly,we introduce the theory and structure analysis of mobile phone wireless charging,including the common radio transmission mode,the basic framework of the system,the mobile phone charging transmitter and receiver were introduced.Then,the characteristics of the mobile phone battery and the factors that affect the charging efficiency are introduced,and the parameters are analyzed.Finally,we design the circuit of the mobile phone charging,and select the control chip which is suitable for the transmitter and the receiver.In addition,we design the auxiliary power supply,the oscillation circuit of the transmitter,and analyze the coupling coil,and design the coil which is suitable for the mobile phone charging and receiver.In order to prove the performance of mobile phone wireless charging,we set up an experimental system under the laboratory conditions.After introducing some test methods,we test the transmitting and receiving modules to verify the feasibility of the system.The content of this paper can promote the promotion of mobile phone wireless charging,which can provide some reference for the future design of wireless charging.Finally,we look forward to the development prospects of wireless charging,and summarize the important content of this paper.