Cell module and cell system using same

In order to prevent short-circuit current due to nail penetration, a fuse must be provided between cells. Therefore, the number of fuses must correspond to the number of cells. This cell module is characterized in having: a first cell group in which at least two cells are aligned in one row in a plane, and are electrically connected in series; and a second cell group in which at least two cells are aligned in one row in a plane, and are electrically connected in series, the first cell group and the second cell group being electrically connected in series to each other via a current interruption mechanism, and being disposed facing each other, and each cell comprising the first cell group further being disposed facing at least one cell comprising the second cell group.