Power generation micro-nano capsule and energy collection array suitable for fluid transportation pipeline

The invention provides a power generation micro-nano capsule and an energy collection array. The power generation micro-nano capsule comprises an upper friction part and a lower friction part which are both prepared from a first friction material; a plurality of convex parts and concave parts are arranged on the opposite vertical surfaces of the upper friction part and the lower friction part; a friction layer is arranged on the surface of the convex part of the upper friction part; the friction layer is prepared from a second friction material, and the first friction material and the second friction material can perform friction power generation; the convex part positioned on the upper friction part is inserted into the concave part positioned on the lower friction part; the protruding part located on the lower friction part is inserted into the concave part located on the upper friction part; a gap is reserved between the top face of part of the protruding part and the bottom face ofthe concave part; and th