Patent ID: 9461296
Filing Date: 2016-10-04
CPC Classification: H01M,Y02E,Y02P

Claim Text:
1. A secondary battery comprising: an electricity-generating element group formed by stacking in layers via separators a positive electrode connecting plate coated with a positive electrode active material, and a negative electrode connecting plate coated with a negative electrode active material, the electricity-generating element group further including portions, of the positive electrode plate and negative electrode plate, that are not coated with the positive electrode active material or negative electrode active material; a battery container accommodating the electricity-generating element group; a positive electrode external terminal and a negative electrode external terminal, each exposed outward from one of two through-holes, one for a positive electrode and the other for a negative electrode, in the battery container in order to conduct electric power charging/discharging between the electricity-generating element group and an external load; and an insulating base material disposed in close contact with an entire edge surface of each through-hole and with entire wall surfaces of the positive and negative electrode terminals at the positive and negative electrode connecting plates, wherein: the positive electrode connecting plate and the negative electrode connecting plate are each fabricated from a single blank material; an electricity-generating element connection portion connected to the electricity-generating element group is formed on a first face at one end of each of the positive and negative electrode connecting plates; the positive or negative electrode external terminal is formed on a second face at the other end of each of the connecting plates; the second faces of the positive and negative electrode connecting plates are exposed from the through-holes in parallel to an outer surface of the battery container; the battery container includes a battery casing and a battery cover sealing an opening in the battery casing, the battery cover including the through-hole for the positive electrode and the through-hole for the negative electrode; and the insulating base material covers upper and lower surfaces of the battery cover and seals the battery cover.