Battery cell, cylindrical battery and battery module

• Main Author: LAI YONGFANG
• Format: Patent
• Language: Chinese; English
• Published: 27.10.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The utility model relates to the technical field of batteries, particularly provides a battery cell, a cylindrical battery and a battery module, and aims to solve the problem of non-uniform temperature rise distribution in an existing full-tab battery cell. In order to achieve the purpose, the battery cell is formed by winding a pole piece unit, the pole piece unit comprises a pole piece and a diaphragm, the pole piece comprises a plurality of tabs, and each tab is provided with a middle part formed by extending along a first direction and an end part which is connected with the middle part and is obliquely arranged relative to the first direction; wherein after two adjacent tab groups are bent, the end parts of the tabs in one tab group can be partially connected with the other tab group. And the adjacent tab groups can be conducted by the end parts, so that current can be conducted through the middle part in the radial direction and can also be conducted through the end parts in the tangential direction, an