Battery module and battery pack

The utility model relates to a battery module and a battery pack, the battery module comprises a plurality of battery cells and a first protection plate, the plurality of battery cells are arranged side by side along the thickness direction to form a sub-module, the first protection plate is arranged on the side surface of the sub-module, and the first protection plate extends from one end of the sub-module to the other end of the sub-module along the arrangement direction of the battery cells. Therefore, when the battery module and the shell of the battery pack move relatively, the first protection plate can separate the battery cell from the shell of the battery pack, and the first protection plate is arranged on the side surface of the sub-module. Therefore, mutual friction is not generated between the battery cell and the battery pack shell, but the first protection plate and the battery pack shell are in mutual friction. Therefore, the first protection plate effectively protects the battery cell from bei