Secondary battery

摘要

Disclosed are a secondary battery including an electrode assembly which includes a first electrode plate and a second electrode plate arranged as a stack, and a separator interposed between the first electrode plate and the second electrode plate, the first electrode plate including a first active material coating part formed by coating a base with a first active material and a first non-coating part, the second electrode plate including the second active material coating part formed by coating a base with a second active material and a second non-coating part, and the first non-coating part including an insulating member in a portion corresponding to the second electrode plate.

主权项

1. A secondary battery comprising:
an electrode assembly comprising a first electrode plate and a second electrode plate arranged as a stack, a separator interposed between the first electrode plate and the second electrode plate, a first electrode tab comprising a first tab coupling part and a first lead film, a second electrode tab comprising a second tab coupling part and a second lead film, and a case, wherein the first electrode plate comprises a first active material coated part and a first non-coated part within the case; wherein the second electrode plate comprises a second active material coated part and a second non-coated part within the case; wherein the first non-coated part comprises an insulating member directly contacting the first active material coated part; and wherein the insulating member has a total width equal to the total width of the first electrode tab or second electrode tab and a total length smaller than the total length of the first electrode tab or second electrode tab, wherein the insulating member is between the first active material coated part and the first tab coupling part or between the second active material coated part and the second tab coupling part; wherein the insulating member is not on the first or second tab coupling part, wherein the insulating member is between the first active material coated part and the first lead film or between the second active material coated part and the second lead film; wherein the insulating member is not on the first or second lead film; wherein the first non-coated part and the second non-coated part extend from the first active material coated part and the second active material coated part, respectively and wherein the first non-coated part adjacent to the first active material coated part of the first electrode plate comprises the insulating member.