Patent ID: 8980469
Filing Date: 2015-03-17
Classification: H01M,Y02E

Abstract:
1. A prismatic secondary battery comprising: a prismatic outer casing having a mouth; an electrode assembly housed in the prismatic outer casing and having a positive electrode plate and a negative electrode plate; a positive electrode collector electrically connected to the positive electrode plate; a negative electrode collector electrically connected to the negative electrode plate; a sealing body sealing the mouth of the outer casing and having a through-hole; at least one external terminal inserted in the through-hole of the sealing body while being electrically insulated from the sealing body with a first insulating member interposed therebetween; a conductive member having a tubular portion; an inversion plate containing a conductive material that is deformed when the pressure inside the battery exceeds a particular level; and a second insulating member having a first through-hole formed between the inversion plate and at least one of the positive electrode collector and the negative electrode collector, at least one of the positive electrode collector and the negative electrode collector being electrically connected to the inversion plate through the first through-hole formed in the second insulating member, the tubular portion of the conductive member having one end portion electrically connected to the external terminal and the other end portion sealed with the inversion plate, the second insulating member having a plurality of fixing pawl portions, the fixing pawl portions being hooked and fixed to a fixing portion formed on the outer surface side of the conductive member; wherein, in a planar view: