Matching the Characteristics of Batteries with Solar Cell Modules

Summary

This paper puts together the characteristics of the storage battery commonly used in worldwide photovoltaic applications with those of the photovoltaic generator and of the solar source. The natural matching of these characteristics may be exploited in meeting the typical requirements of the user. If the module is properly designed, and if due care is taken in battery installation for passive temperature control, there is no need for complex regulation or periodic adjustment, A well-designed photovoltaic module can function as both generator and controller, providing enhanced system reliability, lower system cost, and simpler operation for the user. The critical design parameter, the charging voltage delivered to the battery by the module, is determined by the number of cells in the series string.