Modular bidirectional tidal current energy power generation device

The invention provides a modular bidirectional tidal current energy power generation device. The device comprises an outer frame, at least two inner frames, at least two mounting shafts, a drive unit, at least four horizontal shaft hydraulic generators and at least four air guide hoods, wherein the at least two inner frames are separately arranged in the outer frame; the at least two mounting shafts are rotationally arranged in each inner frame, and the axis directions of the at least two mounting shafts are perpendicular to the horizontal plane and are parallel; the drive unit is connected with the at least two mounting shafts to drive the mounting shafts to rotate; every two horizontal shaft hydraulic generators are fixed on one mounting shaft and arranged in the direction perpendicular to the horizontal plane in the same inner frame; the at least four air guide hoods are fixed on the outer frame or the inner frames, each air guide hood corresponds to each horizontal shaft hydraulic generator, and the horizontal shaft hydraulic generators change the directions in the air guide hoods with rotation of the mounting shafts.