Battery module and battery pack

摘要

To provide a battery module that may be easily assembled, and is capable of preventing a cell unit from being damaged during assembly, the battery module includes a cell unit provided with at least one unit cell, and first and second cases which enclose and accommodate the cell unit. The first and second cases are respectively provided with a main surface, and a side surface which is bent at one end of the main surface and extends in a direction away from the main surface.

主权项

1. A battery module, comprising:
a cell unit having at least one unit cell; first and second cases to enclose and accommodate four sides of the cell unit, each of the first and second cases having a main surface and a pair of side surfaces bent at both ends of the main surface and extending in a direction away from the main surface, one of the pair of side surfaces having a first extension length and the other of the pair of side surfaces having a second extension length different from the first extension length, wherein each of the main surfaces of the first case and the second case is formed with a first through hole in each corner of the main surface; a spacer, provided at and fixed to a respective end of the cell unit, and formed with a second through hole at each longitudinal end of the spacer, such that when the cell unit is aligned with the first and second cases, each of the first through holes of the first case align with a respective second through hole of the spacer and a respective first through hole of the second case; and a fastener inserted into each of the first through holes and respective aligned through hole to thereby fasten the first case, the cell unit, and the second case.