Abstract: A prismatic sealed secondary cell that is excellent in current collection efficiency and current collection stability, and capable of high output discharge. In the prismatic sealed secondary cell a laminate-type or a wound laminate-type flat electrode assembly is housed in a prismatic cell case, a pair of current collector plates are disposed on a flat portion of the outermost surface of the core exposed portion of the first electrode plate constituting the flat electrode assembly so that the pair of current collector plates sandwich the flat portion in the thickness direction, and a columnar connection conductive member is interposed between two-divided core exposed portion laminates in the flat portion sandwiched between the pair of current collector plates, and the pair of current collector plates, the columnar connection conductive member and the two-divided core exposed portion laminates are welded to each other.

Abstract: In a sealed battery, a metal current carrying block 24A having a protrusion 24b on each of the two opposing faces is placed between positive or negative electrode substrate exposed portions that are divided into two so as to bring the protrusion 24b on each of the two opposing faces into contact with the positive or negative electrode substrate exposed portions that are stacked, a pair of electrodes 31 and 32 for resistance welding are brought into contact with positive electrode collector members 16 or negative electrode collector members that are each placed on the outermost surfaces of the positive electrode substrate exposed portions 14 or negative electrode substrate exposed portions, and resistance welding is performed with pressure applied between the pair of electrodes 31 and 32 for resistance welding.

Abstract: The present invention provides a prismatic sealed secondary cell that is excellent in current collection efficiency and current collection stability, and capable of high output discharge. In the prismatic sealed secondary cell in which a laminate-type or a wound laminate-type of flat electrode assembly is housed in a prismatic cell case, a pair of current collector plates are disposed on a flat portion of the outermost surface of the core exposed portion 5b of the first electrode plate constituting the flat electrode assembly so that the pair of current collector plates sandwich the flat portion in the thickness direction, and a columnar connection conductive member is interposed between two-divided core exposed portion laminates in the flat portion sandwiched between the pair of current collector plates, and the pair of current collector plates, the columnar connection conductive member and the two-divided core exposed portion laminates are welded to each other.

Abstract: In a sealed battery, a metal current carrying block 24A having a protrusion 24b on each of the two opposing faces is placed between positive or negative electrode substrate exposed portions that are divided into two so as to bring the protrusion 24b on each of the two opposing faces into contact with the positive or negative electrode substrate exposed portions that are stacked, a pair of electrodes 31 and 32 for resistance welding are brought into contact with positive electrode collector members 16 or negative electrode collector members that are each placed on the outermost surfaces of the positive electrode substrate exposed portions 14 or negative electrode substrate exposed portions, and resistance welding is performed with pressure applied between the pair of electrodes 31 and 32 for resistance welding.