Abstract: A fuel cell system and a flow control mechanism thereof are provided. The fuel cell system includes a plurality of fuel cells and the flow control mechanism. The flow control mechanism includes a distributing device and a confluence device, and the cells are stacked between the distributing device and the confluence device. The distributing device or the confluence includes at least one inlet, at least one outlet, at least one passage and at least one buffering section. The passage communicates with the inlet and the outlet. The buffering section is disposed in any position of the passage. The buffering section and the inlet are on different levels.

Abstract: The conductive seat has parallelly arranged strip members in a bottom area of its base sealed therein with liquid, a plurality of flow channels are formed from and on the bottom of the strip members and are mutually spaced; a return area is formed between the top ends of the strip members and the lid; when the bottom of the base contacts with a heat-generating source, the liquid sealed in the base and absorbing the latent heat from the heat-generating source becomes a vapor flow flowing toward the return area to repeatedly circulate and transmit the heat, thereby the heat is rapidly and uniformly transmitted to the heat sink to further increase the effect of heat sinking.