Improvement of the energy efficiency of the photovoltaic thermoelectric battery

The paper considers one of the original solutions of the photovoltaic thermoelectric battery, which was implemented in the COMSOL Multiphysics software environment. Furthermore, the diurnal and seasonal variations of the ambient temperature and the effects of the concentrated solar radiation were taken into account. The temperature patterns in the different sections of the battery as well as the temperature gradient patterns inside the thermoelectric converters are calculated. It is shown that the increasing of the output voltage up to maximum values of 0,635 and 0,78 V in January and July, respectively, was achieved due to the temperature stabilization of the back side of the external electrodes.