Electricity storage module comprising a plurality of power storage devices with holders and film outer covering bodies

A power storage module comprising:

• a plurality of power storage devices;
• a plurality of holders that hold the plurality of power storage devices;
• and
• a reinforcement member for the plurality of holders, wherein
• the plurality of power storage devices include a first power storage device and a second power storage device,
• each of the first power storage device and the second power storage device includes
• a plurality of cylindrical electrode assemblies, and
• a film outer covering body including
• a plurality of containers individually enclosing the plurality of cylindrical electrode assemblies and
• a sealing part sealing each of the plurality of containers and connecting the plurality of containers to each other,
• the first power storage device and the second power storage device are arranged in an orthogonal direction orthogonal to an arrangement direction of the plurality of cylindrical electrode assemblies and an axial direction of the plurality of cylindrical electrode assemblies,
• the plurality of holders includes a first holder and a second holder,
• the first holder includes a first side plate elongated in the arrangement direction and including a plurality of recesses, fitting each into corresponding one of the plurality of containers of the first power storage device,
• the second holder includes a second side plate elongated in the arrangement direction and including a plurality of recesses fitting each into corresponding one of the plurality of containers of the second power storage device,
• the reinforcement member includes a first reinforcement part, a second reinforcement part, and a first connection part,
• the first reinforcement part includes a side plate groove that elongated in the arrangement direction, is aligned with the first side plate in the axial direction, and into which the first side plate is fitted on a surface facing the first side plate,
• the second reinforcement part includes a side plate groove that elongated in the arrangement direction, is aligned with the second side plate in the axial direction, and into which the second side plate is fitted on a surface facing the second side plate, and
• the first connection part connects the first reinforcement part and the second reinforcement part, and is at least temporarily slidable with respect to at least one of the first reinforcement part and the second reinforcement part.