Multiple weight pendulum-based wave energy harvesting apparatus incorporating magnetic repulsion-based piezoelectric power generation mechanism

A compound-pendulum up-conversion wave energy harvesting apparatus, comprising:

• a shell (1) comprising a top surface and a bottom surface, the shell floating on a water surface and swinging with fluctuation of waves, the bottom surface of the shell in contact with the water surface;
• a compound-pendulum mechanism (2) rotatably arranged in the shell (1) and rotating with swinging of the shell;
• a driving gear (3) rotatably arranged in the shell (1) above the bottom surface of the shell, the driving gear (3) rotating synchronously with the compound-pendulum mechanism (2);
• an electromagnetic power generation mechanism (4) arranged in the shell (1) and configured to be meshed with the driving gear (3) for transmission and driven by the driving gear to generate electricity through electromagnetic induction;
• and
• a piezoelectric power generation mechanism (5) rotatably arranged in the shell (1) above a top face of the driving gear (3), the piezoelectric power generation mechanism (5) configured to be deformed during rotation of the driving gear (3) to generate electricity through piezoelectric effect;
• wherein the compound-pendulum mechanism (2) comprises a support shaft (201) vertically arranged on a bottom face of the shell (1) and a plurality of swing blocks (202) circumferentially rotatably connected to a side face of the support shaft (201), an inner circular surface of the driving gear (3) being connected to an outer end face of each of the swing blocks (202);
• and
• wherein the piezoelectric power generation mechanism (5) comprises a plurality of piezoelectric power generation beams (501) that are vertically swingably connected to a circumferential side face of the support shaft (201) and configured to generate electricity through swinging and deformation, and a force transmission assembly configured to drive the piezoelectric power generation beams (501) to vertically swing during rotation of the driving gear (3).