Domestic photovoltaic and photo-thermal integrated device with natural circulation

The invention relates to a domestic photovoltaic and photo-thermal integrated device with natural circulation. Heat collection pipes are arranged below battery pieces of a solar photovoltaic module and in the gaps between the battery pieces, and can absorb solar irradiation irradiated to the photovoltaic module and the heat generated by the photovoltaic battery pieces during power generation process to the maximum degree; a normal photovoltaic module is combined with a flat collector, so that the surface temperature of the photovoltaic module is effectively reduced, the power generation efficiency is increased, hot water is produced, and the purpose of increasing comprehensive utilization efficiency of the solar power is realized; a storage battery is arranged to store electrical power, so that when the solar irradiation is relatively low, the electricity in the storage battery can be used to heat water, and the peak shifting utilization of the solar power during rainy days and fine days is achieved.