High-bandwidth communication board card for efficient hot-cold dehumidification type transformer substation

The invention discloses an efficient hot and cold dehumidification type transformer substation high-bandwidth communication board card, which belongs to the technical field of transformer substation communication equipment, and can heat and cool air entering a heat dissipation shell through a heat dissipation surface and a refrigeration surface of a refrigeration sheet when a board card body runs, so that the dryness of the air in the heat dissipation shell is effectively improved, and the heat dissipation efficiency is improved. The formation condition of condensate water on the surface of the board card body is reduced, when the board card body is in a standby state, only air can be heated, on one hand, cold air can be heated, external cold air is prevented from making direct contact with the surface of the board card body, and formation of the condensate water is reduced; the cooling speed of the surface of the board card body after standby can be effectively slowed down, the condensation phenomenon of the