Collecting plate, battery, battery pack and electric equipment

The utility model discloses a current collecting plate, a battery, a battery pack and electric equipment, the current collecting plate comprises a current collecting plate body; the first connecting part comprises a first connecting piece and a plurality of second connecting pieces, the first connecting piece is arranged at the central position of the collector plate body, and the plurality of second connecting pieces are connected to the outer periphery of the first connecting piece; and the movable connecting piece is connected with the second connecting piece and is connected with the collector plate body. And the movable connecting piece is suitable for moving relative to the collector plate body when being stressed. According to the current collecting plate disclosed by the utility model, deformation is generated through the buffer structure designed on the current collecting plate, so that the two welding surfaces are prevented from being torn by stress, and the safety of the welding surfaces of the battery cell tabs is ensured. The potential tab tearing risk of a rigid collector plate in the prior art is avoided, and the safety and the structural stability of the battery are improved.