Battery and electrical apparatus

A battery comprising:

• a plurality of battery modules arranged in sequence in a first direction;
• and
• connecting elements;
• wherein:
• each battery module comprises battery cells and side plates arranged on both sides of the battery cells in the first direction;
• the side plates of two adjacent battery modules are configured to be connected to each other, in the two connected side plates, one side plate is provided with clamping protrusions, the other side plate has clamping grooves, and the clamping protrusions are configured to be clamped into the clamping grooves to prevent each other from moving in a second direction, the second direction being perpendicular to the first direction;
• a plurality of battery cells of the battery module are configured to be arranged side by side in a third direction, and the battery module further comprises end plates configured to be arranged oppositely in the third direction, and the end plates and the side plates are configured to be connected end-to-end and arranged around the plurality of battery cells, the first direction being perpendicular to the third direction;
• and
• opposite ends of each connecting element are respectively configured to be connected to the end plates of the two adjacent battery modules, so as to limit the relative displacement of the adjacent end plates;
• for the connecting element and the end plates connected, one is provided with a connecting protrusion, and the other is provided with a connecting groove matching with the connecting protrusion;
• the end plate is configured to be provided with the connecting groove, the connecting element comprises a first connecting portion and the connecting protrusions configured to be connected to opposite sides of the first connecting portion, the connecting protrusions are configured to be inserted into the connecting grooves, and the end plates are configured to be connected to the connecting protrusions by bolts;
• the end plate comprises a first side wall and a second side wall that are arranged oppositely at an interval in the third direction, the connecting groove is formed between the first side wall and the second side wall, and the connecting protrusion abuts against the first side wall and the second side wall;
• and
• the end plate further comprises a limiting protrusion protruding from the first side wall to the second side wall, and the connecting portion has a limiting groove fitting the limiting protrusion.