Design On Energy Management System Of Sodium Borohydride Fuel Cell

From the point of view of human development,energy is the basis for human progress.In today’s society,energy is one of the essential elements in our lives.As one of the new energy sources,fuel cells have a wide range of application prospects.However,due to the complex mechanism of the entire fuel cell system,it is necessary to study the energy management system for its more stable and lasting work.Based on the existed proton exchange membrane fuel cells in the laboratory,this paper studied from the perspectives of theory,design and prototype testing,and designed a set of sodium borohydride hydrogen fuel cell energy management system and realized the prototype.Moreover,the design includes both hardware and software aspects.In terms of theory,the work principle of the proton exchange membrane fuel cell and hydro-chemical hydrogen production technology was studied,the working principle of the fuel cell was summarized,and it was abstracted into three states,and then the structure of the energy management system was designed.In terms of hardware design,this paper completed the design of the main control chip,temperature control module,pressure control module,human-computer interaction module,voltage regulator circuit,charging circuit,and power supply switching circuit from the perspective of the control system and the energy management system.In addition,the step-down conversion efficiency of the voltage stabilizing circuit was studied,and after optimization,the conversion efficiency was significantly improved.The efficiency of stepping down to 5V and 3.3V increased by 1.4 times and 2.5 times,respectively.At the same time,the integration of circuit board was also an aspect of research.After optimization,the total circuit board area has been reduced by 40.27%.In terms of software,the underlying driver was divided into nine modules based on the function of the energy management system,and the design of nine modules was completed.Afterwards,an embedded real-time operating system was transplanted to improve the real-time performance of the system.Based on the task division,the interaction between tasks was designed,and five tasks were interactively completed for three services.In the aspect of prototype testing,the function of the energy management system was verified,and the stability of the fuel cell system was analyzed.Among them,functional tests include solenoid valve periodic tests,fan temperature control tests,and peristaltic pump fuel control tests.Finally,the energy management system of the sodium borohydride hydrogen production fuel cell has good stability and can cooperate with the fuel cell as the power supply to generate electricity at a power of 60 W continuously and stably.The system can provide some reference for further research in related fields.