Sea anchor power generation device capable of being automatically retracted and released based on ocean current and application method of sea anchor power generation device

The invention relates to an ocean-current-based power generation device capable of automatically retracting and releasing a sea anchor and an application method thereof.The ocean-current-based power generation device capable of automatically retracting and releasing the sea anchor is characterized in that a buoy station automatically releases the sea anchor power generation device, a sea anchor device is automatically unfolded to drive a propeller generator at one end of the sea anchor to generate power through ocean current, and finally electric energy is stored through a connecting cable of the buoy station and the sea anchor device; after work, the buoy station is folded and recycled into the buoy station cabin. The power generation device is simple in structure, convenient to recycle and lay, capable of being freely and flexibly unfolded or folded, wide in application range, high in adaptability and suitable for operation in submerged water areas such as rivers and lakes and operation in deep water areas