Electric connector, battery pack and battery pack

The utility model provides an electric connector, a battery pack and a battery pack, the electric connector is a conductive piece connected in series between adjacent battery rows, the electric connector comprises a confluence part, a first steering part and a second steering part, and the electric connector is electrically connected with the top pole of each single battery in the same battery row through the confluence part; and the first turning part and the second turning part are bent twice on the upper end surface and the side surface of the switching bridge, so that the top pole of the battery row is switched to a position corresponding to the side shell pole of the adjacent battery row, and the series electric connection among the whole rows of the plurality of battery rows is realized. According to the battery pack or the battery pack which is electrically connected by the utility model, the whole structure of the battery pack is fixedly sealed through the cold welding glue of the electric connection