▎ 摘　　要

NOVELTY - The device has a heat collecting system that is set above a graphene-concrete wall portion (6). A rectifier is connected with one side of the graphene-concrete wall portion, a controller and a capacitor. The heat collecting system is provided with a blue film plate (2) and a red copper flow passage (1) that is set between the blue film plate and the graphene-concrete wall portion. USE - Concrete wall portion temperature difference generating device. ADVANTAGE - The concrete wall body temperature difference generating device has obvious temperature difference value, strong bearing capacity and low cost. The thermoelectric material has no mechanical movement, no noise, no abrasion, high reliability, no maintenance, no pollution, size shape can be designed according to need. The sunshine absorption efficiency is fast improved, high absorption and low emission heating is fast, it can generate large temperature difference and improve the power generation efficiency. The graphene-concrete composite material has a certain mechanical performance, the masonry structure has good integrity, the anti-compression and anti-bending performance is excellent, the application range is wide, and the temperature difference can reach more than 40 degrees centigrade. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of graphene-concrete wall portion for concrete wall portion temperature difference generating device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the winter working principle of concrete wall portion temperature difference generating device. (Drawing includes non-English language text). Red copper flow passage (1) Blue film plate (2) First copper mesh electrode (5) Graphene-concrete wall portion (6) First diode (81) Third diode (83) Fourth diode (84)