Based on the scientific research project ofPhotovoltaic power generation systemof Guangdong Polytechnic Normal University,the Proteus virtual simulation technology and method are used to design and study the display model of instantaneous current,average current and accumulative current of the charging and discharging by the photovoltaic system battery,and the daily K line column diagram with dynamic characteristics.An effective analysis method for the battery charging and discharging principle is put forwa...