Secondary battery

Abstract

An embodiment of the present invention provides a secondary battery wherein, by positively charging a case by a high-resistance positive electrode charging member, an alloy (for example, a lithium aluminum (LiAl) alloy) is not formed on the inner surface of the case by an electrolyte (that is, the case is not corroded), and when a negative electrode terminal is short-circuited to a positive electrode case; a short-circuit current is limited. As an example, the secondary battery according to an embodiment of the present invention comprises: an electrode assembly; a case in which the electrode assembly is accommodated; a cap plate which is coupled to the case and seals the electrode assembly; a terminal which is connected to the electrode assembly and exposed through the cap plate; and a charging member which is interposed between the cap plate and the terminal, wherein the charging member may comprise a conductive member interposed between the cap plate and the terminal, and an insulating member interposed between the conductive member, the cap plate, and the terminal.

CPC Classifications