Battery pole piece and battery

• Main Authors: BAI YAN, ZOU HU, HE ZHIJIA
• Format: Patent
• Language: Chinese; English
• Published: 14.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The utility model provides a battery pole piece and a battery, and belongs to the technical field of batteries, the battery pole piece comprises a foil material, an empty foil area is arranged on the inner rolling surface of the first folding end in the length direction of the foil material, and a plurality of bulges are distributed on the empty foil area, so that the empty foil area is of an uneven structure. According to the battery pole piece provided by the invention, the friction force between the inner diaphragm and the pole piece is improved, so that the inner diaphragm is prevented from being taken out by the pulled winding needle, the problem of poor core pulling in battery cell manufacturing in the prior art is solved, the probability of poor core pulling phenomena is reduced, the yield of battery cells is improved, and the quality of the battery is improved. 本申请提供了一种电池极片及电池，属于电池技术领域，电池极片包括有箔材，箔材长度方向的首折端的内卷面上具有空箔区，空箔区上分布有多个凸起，以使空箔区呈凹凸不平的结构。本申请提供的电池极片，通过改善内隔膜与极片之间的摩擦力，来防止内隔膜被抽离的卷针带出，以解决现有技术中电芯制作所存在的抽