Patent ID: 7785377
Filing Date: 2010-08-31
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A sealed battery comprising: a metal case which functions as a connection terminal of one polarity, an electrode post through-hole being provided in the case; an electrode plate assembly housed in the case; an electrode post which is mounted to the case in an insulated manner and functions as a connection terminal of the other polarity, the electrode post comprising a hollow cylinder with one closed end; a sealing section with electrical insulation properties, being disposed between the electrode post and the electrode post through-hole; and a compression deformation section comprising the closed end of the hollow electrode post deformed radially outward, the sealing section compressed and sealed between a collar of the electrode post and the closed end of the hollow electrode post deformed radially outward, and the compression deformation section securing the electrode post; wherein the electrode post is brought into contact with a collector that is joined to an end face of one polarity of the electrode plate assembly, and an end wall of the compression deformation section of the electrode post is welded to the collector from a position outside the case, through a hollow interior of the electrode post.