ELECTRODE ASSEMBLY, SECONDARY BATTERY INCLUDING SAME, AND METHOD FOR MANUFACTURING SAME

• Main Authors: JEONG HYUN-KI, CHOI MIN-YEOL
• Format: Patent
• Language: Chinese; English
• Published: 05.02.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention provides an electrode assembly, which can reduce resistance and improve a process property, a secondary battery including same, and a method for manufacturing same. For example,disclosed is an electrode assembly comprising: a first electrode plate having a first electrode tab attached thereto; a plurality of second electrode plates having second electrode tabs attached thereto, respectively; and a separator interposed between the first electrode plate and the plurality of second electrode plates, wherein the first electrode plate, the separator, and the plurality of second electrode plates are wound in a state of being stacked on one another, and the second electrode tabs are formed to be symmetrical to each other on the basis of a winding center thereof. 本发明提供了一种可以降低电阻并改善工艺性能的电极组件、包括该电极组件的二次电池以及制造该电极组件的方法。例如，公开了一种电极组件，该电极组件包括：第一电极板，使第一电极接线片附着到第一电极板；多个第二电极板，使第二电极接线片附着到所述多个第二电极板；以及隔膜，置于第一电极板与所述多个第二电极板之间，其中，第一电极板、隔膜和所述多个第二电极板以彼此堆叠的状态卷绕，并且第二电极接线片形成为基于其卷绕中心彼此对称。