The Design Of Power Supply For Power Battery Formation Process

With the acceleration of industrialization,China's demand for fossil energy is also growing.The problem is that the fossil energy reserves are gradually decreasing and environmental pollution is becoming more and more serious.Therefore,the development of green energy is of great significance.Electric-powered new energy electric vehicles have the advantages of no pollution and zero emissions.Therefore,new energy electric vehicles are expected to become an inevitable trend in the future development of automobiles,and energy storage devices such as power batteries have also received some attention.The formation is a very important step in the production process of the power battery.Before the battery leaves the factory,the battery needs to be processed into a treatment to optimize the parameters such as the capacity of the battery.The term "chemical formation" refers to a process of converting lead oxide in a green plate into lead dioxide and lead metal by charging and discharging the battery a plurality of times.In the actual operation of industrial production,the battery needs to be charged and discharged three or four times,and the one-time charging usually lasts for three or four days,and the required electric energy is enormous.Therefore,it is of great significance to improve the utilization efficiency of electric energy while ensuring the quality of battery formation.In order to realize the purpose of efficient use of electric energy,in addition to designing a chemical conversion device with energy feedback function,this paper also studies the bidirectional DC-DC circuit for battery formation.Based on the original synchronous conduction mode,an improved synchronous conduction mode based on load current is proposed.When the inductor current operates in the improved SCM mode,the switching device can achieve zero voltage conduction and zero current.Shutdown,which reduces the switching loss of the power supply and improves the operating efficiency of the system.Finally,according to the practical application requirements of the chemical power supply,a charge and discharge module based on the improved SCM control was built and an experimental test platform was built.The power supply and discharge function and related control strategies were tested experimentally.The experimental results show that the power battery charging and discharging module based on the improved SCM mode can realize the zero voltage conduction and zero current shutdown of the switching tube.The battery based power supply designed by the charging and discharging module can realize the system.The function is required,and the switching loss is reduced,which improves the operatingefficiency of the system.