Multi-layer sphere type wave energy collecting device

The invention provides a multi-layer sphere type wave energy collecting device. The multi-layer sphere type wave energy collecting device comprises a multi-layer sphere, an energy storage device and a power generation device arranged in the multi-layer sphere. The multi-layer ball body comprises an upper ball body, a lower outermost layer ball body, a lower middle layer ball body and a lower innermost layer ball body; the power generation device comprises a power generation pipeline, and a copper film part, a blank part and a small power generation ball which are arranged in the power generation pipeline; and the energy storage device comprises a rectifier bridge, a voltage stabilizing capacitor and an energy storage battery. The device can fluctuate back and forth on the sea surface along with waves, then rolling of the small balls in the interlayer of the ball body is caused, efficient conversion of wave energy is achieved, and the power generation efficiency is improved; meanwhile, wave energy can be fully