Cylindrical single battery, battery and electric device

• Main Authors: LI XING, YIN LI, CHEN JIAHUA, NIU SHAOJUN, XU HU, ZHONG XUEQI
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The utility model relates to a cylindrical battery monomer, a battery and a power utilization device. A cylindrical battery cell includes an electrode assembly, a top cover, and a plurality of protrusions. The electrode assembly has a tab including a non-welding region and a welding region. The top cover is provided with a pole and a welding part, the welding part is welded to the welding area, and at least part of the bottom end of the pole makes contact with the non-welding area so that the electrode assembly can be electrically connected with the pole. The plurality of lug bosses are arranged on one side, facing the electrode assembly, of the pole, and are at least partially inserted into the non-welding areas of the tabs. On one hand, the over-current area of the cylindrical battery monomer can be increased, the over-current capability of the cylindrical battery monomer can be improved, on the other hand, the binding strength of the top cover and the electrode assembly can be improved, the fatigue resista