The utility model provides a battery module. The battery module (1) is easy to manufacture, can be used for reducing short-circuit accidents in electrode slice connection operation and is formed by stacking multiple roughly rectangular bird-eye sheet batteries (10), wherein each sheet battery is provided with a positive plate (11p) and a negative plate (11n) which are led out from a front side (14f), and the positive plate of one sheet battery and the negative plate of the adjacent sheet battery are opposite to each other. The positive plate of one sheet battery and the negative plate of the adjacent sheet battery are opposite to each other and are electrically connected in a manner of connecting the multiple sheet batteries in a series. An electric conduction path for the electric connection between the positive plate and the adjacent negative plate is bent along a bending line a side edge (14b) adjacent to the front side.