Abstract: An electrochemical cell module includes a housing including a main surface plate having a first surface with a first recess and a side plate in contact with the main surface plate, an electrochemical cell located in the housing, being plate-like, and having a main surface, a pressure plate located in the housing, facing the first surface, and being in contact with the main surface, and a spring received in the first recess to urge the pressure plate and the main surface plate.

Abstract: An electrochemical cell module includes a plurality of electrochemical cells stacked on one another and each including an electricity generator and a casing, and a housing accommodating the plurality of electrochemical cells. The casing includes a peripheral portion without overlapping the electricity generator as viewed in the stacking direction. The peripheral portion is bent and has its main surface in contact with an inner side surface of the housing.