Battery module

1. A battery module, wherein the battery module comprises:

a plurality of batteries, arranged sequentially along a thickness direction of the battery module, wherein a gap exists between every two adjacent batteries; and

a first side plate, disposed on one side of the plurality of batteries in a width direction of the battery module, wherein

a plurality of notches and a plurality of flanges are formed on the first side plate, each notch corresponds to a location of the gap between every two adjacent batteries, and each flange bends from one side of a corresponding notch and extends into the corresponding gap between the two adjacent batteries to separate the two adjacent batteries,

wherein a thickness of the first side plate is smaller than a width of the gap between two adjacent batteries,

wherein a bulging rib that bulges in the thickness direction is formed on each flange,

wherein the bulging rib is parallel to the thickness-wise side edge of the corresponding notch.

2. The battery module according to claim 1 , wherein the first side plate comprises a plate body and an upper bending portion, the upper bending portion bends from an upper side of the plate body toward the plurality of batteries along the width direction, the upper bending portion is located on an upper side of the plurality of batteries in a height direction of the battery module, a plurality of notches and a plurality of flanges are formed on the upper bending portion, each notch of the upper bending portion corresponds to the location of the gap between every two adjacent batteries, and each flange of the upper bending portion bends downward from a thickness-wise side edge of a corresponding notch.

3. The battery module according to claim 1 , wherein the first side plate comprises a plate body and a lower bending portion, the lower bending portion bends from a lower side of the plate body toward the plurality of batteries along the width direction, the lower bending portion is located on a lower side of the plurality of batteries in a height direction of the battery module, a plurality of notches and a plurality of flanges are formed on the lower bending portion, each notch of the lower bending portion corresponds to the location of the gap between every two adjacent batteries, and each flange of the lower bending portion bends upward from a thickness-wise side edge of a corresponding notch.

4. The battery module according to claim 1 , wherein the first side plate comprises a plate body, a plurality of notches and a plurality of flanges are formed on at least one of an upper side, a lower side, or a position between the upper side and the lower side of the plate body in the height direction, each notch on at least one of the upper side, the lower side, or the position between the upper side and the lower side of the plate body in the height direction corresponds to the location of the gap between every two adjacent batteries, and each flange at the corresponding position bends from a thickness-wise side edge of a corresponding notch toward the plurality of batteries along the width direction.

5. The battery module according to claim 1 , wherein a plurality of notches and a plurality of flanges are formed on an upper side and a lower side of the first side plate separately in the height direction, and a bulging direction of the bulging rib on each flange on the upper side of the first side plate in the height direction is opposite to a bulging direction of the bulging rib on each flange on the lower side of the first side plate in the height direction.

6. The battery module according to claim 1 , further comprising a second side plate, wherein the second side plate adopts a structure of the first side plate according to claim 1 .

7. The battery module according to claim 6 , wherein a shape of the second side plate is identical to that of the first side plate.