Temperature difference electric generator, and heat collection structure thereof

The invention discloses a temperature difference electric generator and a heat collection structure thereof, and relates to the technical field of electric generation. The heat collection structure comprises multiple heat collection units, each heat collection unit comprises a first piece, a second piece and a third piece which are connected in sequence, a first included angle is formed between each first piece and the corresponding second piece, a second included angle is formed between each second piece and the corresponding third piece, a gap is formed between the first pieces of the adjacent heat collection units, and the third pieces of the adjacent heat collection units are connected. The technical problem that when tail gas waste heat of a ship engine is used for temperature difference electric generation, the waste hat absorbing conversion efficiency is low can be solved, the heat collection structure can sufficiently absorb tail gas waste heat, the temperature difference electric generator can suffic