First heat exchange plate, second heat exchange plate, heat exchange plate pair, connecting structure and heat exchanger

The utility model provides a first heat exchange plate, a second heat exchange plate, a heat exchange plate pair, a connecting structure and a heat exchanger, the first heat exchange plate comprises a first plate sheet and a first corrugated structure arranged at the top of the first plate sheet, and further comprises first folded edges and two opposite side edges correspondingly arranged on the first plate sheet, and the first folded edges and the first corrugated structure are arranged in the same direction; the second folding edges are correspondingly arranged on the other two opposite side edges of the first plate sheet, and the first folding edges and the second folding edges are opposite in direction; the first insertion opening is formed in the end part of the second folding edge; the first heat exchange plate and the second heat exchange plate are adopted to assemble the heat exchange plate pair, the spliced inserting grooves are located in the edge of the heat exchange plate pair, the heat exchange p