A thermoelectric conversion module (5) is equipped with: a thermoelectric conversion element (1); a container (2); a heat storage material (3) that is provided in the container; and a first heat conductive member (4), which is thermally connected to one side of the thermoelectric conversion element, and is also thermally connected to the heat storage material. The first heat conductive member includes a portion formed of a solid phase-to-solid phase phase-transition heat storage material, which has a heat conductivity that is higher than that of the heat storage material, and a transition temperature that is different from that of the heat storage material.
