Research And Design Of Coupling Mechanism Applied To Wireless Power Supply System For Gas Stove Ignition Controller

With the rise of smart home boom,clean,convenient and safe home experience attract more and more people's attention.In this background,public attentions has been aroused by the gas stove,which is frequently used in the kitchen.The current gas stove needs to provide electrical energy to the ignition controller by dry battery or the power adapter.However,the power supply device is usually installed in the kitchen below.Under the condition of high temperature and humidity in gas stove,It can easily cause the wire to age,leakage and short-circuit.Therefore,using wireless power transmission technology(WPT)to achieve power supply for gas stove ignition controller came into being.WPT technology achieve the transmission of electricity power through the form of non-contact,which break away from the way that electricity power only can be transmitted through the traditional wire transmission.It has the advantages of flexiblity,security and high reliability,and has broad application prospects,particularly suitable for applications in some special occasions that requiring high security,such as under water,coal mine,implantable medical electronic equipment.According to the specific requirements of the horizontal project,this paper focuses on the research of the wireless energy transfer of the gas stove ignition controller.One of the most important parts in WPT system is the electromagnetic coupling mechanism.The transmission power and efficiency of the system is greatly affected by the electromagnetic coupling mechanism performance.Aiming at the requirement of the wireless power supply system of the gas stove ignition controller,the design of the electromagnetic coupling mechanism of the system is studied in this paper.Firstly,the research status of the electromagnetic coupling mechanism of the wireless power supply system is introduced,and then the wireless power supply scheme of the gas stove ignition controller is determined according to the project requirements,in which the power of range hood is transferred to gas stove ignition controller through inductively coupled power transfer(ICPT)technology.And the basic principles and composition of the technology are briefly introduced.Then,the equivalent model and energy efficiency of the electromagnetic coupling mechanism of the system are analyzed theoretically,and the key points of the electromagnetic coupling mechanism design are determined.Based on finite element simulation software COMSOL,the factors influencing the performance of electromagnetic coupling mechanism are simulated and analyzed.According to the practical application situation,the simulation model about the winding form,the coil structure and the magnetic core structure of coupling coils in system are established.and analyzed from the mutual inductance,magnetic field distribution.A theoretical basis for the design of the electromagnetic coupling mechanism is provided.Combined with the project requirement analysis,the general design flow of coupling mechanism is presented.According to the law of the simulation,the electromagnetic coupling mechanism of the wireless power supply system for gas stove ignition controller is designed from the coil structure design and parameter design of the electromagnetic coupling mechanism.The rationality of the electromagnetic coupling mechanism is verified by simulation.Finally,the experimental verification device is set up.The feasibility of the electromagnetic coupling mechanism is verified by experimental result,and the technical requirements of the wireless power supply system of the gas stove ignition controller is realized.