Energy harvesting device based on wave energy

An energy harvesting device based on wave energy comprising:

• a box body (100);
• a swing rod (220) hinged with the box body (100), wherein one end of the swing rod (220) extends into the box body (100) and a float (210) is fixed to the other end of the swing rod (220);
• a base layer (410) arranged inside the box body (100) and provided with a plurality of piezoelectric patches (420) in a length direction;
• and an energy transmission assembly (300) fixed inside the box body (100) and located between the swing rod (220) and the base layer (410), one side of the energy transmission assembly (300) is connected with one end of the swing rod (220) extending into the box body (100), the other side of the energy transmission assembly (300) is in transmission connection with the base layer (410), wherein the energy transmission assembly (300) converts the swinging of the swing rod (220) into squeezing to the base layer (410), so that the base layer (410) is elastically deformed, and thus the piezoelectric patches (420) are driven to generate a piezoelectric effect to output voltage.