BATTERY CELL AND METHOD AND SYSTEM FOR MANUFACTURING SAME, AND BATTERY AND ELECTRIC DEVICE

• Main Authors: ZHU, Wenqi, WEN, Yuqian, YANG, Zhenfei
• Format: Patent
• Language: Chinese; English; French
• Published: 06.04.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The embodiments of the present application provide a battery cell and a method and system for manufacturing same, and a battery and an electric device. The battery cell comprises: a case, which comprises an electrode lead-out portion; and an electrode component, which is accommodated in the case, the electrode component being provided with a first tab at the end thereof facing the electrode lead-out portion. The first tab is wound around a winding axis of the electrode component, and comprises multiple circles of tab layers, wherein at least some of the multiple circles of tab layers are welded to form a first welded portion; some of the multiple circles of tab layers are welded to the electrode lead-out portion to form a second welded portion; and at least one circle of the tab layers that are connected to the first welded portion is not welded to the electrode lead-out portion. The present application can improve the overcurrent capacity of the battery cell. Les modes de réalisation de la présente demande c