Energy storage system coupling phase change material and dissipation heat pipe

Provided is an energy storage system coupling phase change material(s) and dissipation heat pipe(s). The energy storage system includes several energy storage units serially connected along a same central axis. Each of the energy storage units includes a heat charge flow channel, an annular heat release passage, and an annular energy storage passage disposed concentrically from inside to outside. A dissipation pulsating heat pipe is disposed in the energy storage unit, and the dissipation pulsating heat pipe includes several pulsating-heat-pipe branches uniformly arranged in a circumferential direction. Each of the pulsating-heat-pipe branches includes an evaporation section located in the heat charge flow channel, a transfer section located in the annular heat release passage, and a condensation section located in the annular energy storage passage, and adjacent pulsating-heat-pipe branches are sequentially in communication through a root port of the evaporation section to enable the entire dissipation pulsating heat pipe to form a closed loop. A phase change material in tight contact with the condensation section is filled in the annular energy storage passage.