Cathode collector plate and battery

Abstract

The utility model relates to the technical field of battery parts, and in particular relates to a negative electrode confluence plate and a battery. The utility model provides a cathode confluence plate which comprises a cathode confluence plate main body, a protruding protrusion part is arranged in the middle area of the cathode confluence plate main body, a plurality of reinforcing rib groups are arranged outside the protrusion part, and the reinforcing rib groups are fixed on the cathode confluence plate main body. A plurality of through holes penetrating through the negative electrode confluence plate main body are further formed in the negative electrode confluence plate main body, each reinforcing rib group comprises a plurality of reinforcing ribs, the through holes are formed among the reinforcing ribs in a single reinforcing rib group, and a plurality of hollow buffer grooves are formed between the convex parts and the reinforcing rib groups. According to the utility model, the connection stability and reliability of the negative electrode of the cylindrical battery cell can be improved, and the damage to the welding strength caused by slight displacement of the roll core due to pole piece expansion or battery cell vibration and the like in the charging and discharging process of the battery cell is improved.

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