Weight stacking system for gravity energy storage

The invention relates to the technical field of gravity energy storage, in particular to a weight stacking system for gravity energy storage, and aims to solve the problems that an existing solid gravity energy storage system is low in electricity-electricity conversion efficiency, high in construction cost and insufficient in system safety due to stacking. The parking system comprises an upper parking track, a lower parking track, a communicating track, a limiting control device and an energy storage device. The two ends of the communicating track are connected with the upper parking track and the lower parking track correspondingly. The height of the upper parking track is gradually reduced from the entrance to the exit, and the height of the lower parking track is gradually reduced from the entrance to the exit. The upper parking track and the lower parking track are set to be the tracks with the heights gradually reduced, the energy storage device can move only through gravity when being parked, a stackin