Electrode assembly block and method of manufacturing the same, and secondary battery and method of manufacturing the same

A secondary battery comprising an electrode assembly composed of at least two electrode assembly blocks, each of the at least two electrode assembly blocks comprising:

• a first electrode plate comprising a first electrode collector plate and a first electrode tab;
• a first separator on a bottom surface of the first electrode plate and a second separator on a top surface of the first electrode plate, to cover the first electrode collector plate between the first separator and the second separator while allowing a portion of the first electrode tab to be exposed;
• and
• a second electrode plate on a bottom surface of the first separator or a top surface of the second separator, the second electrode plate comprising a second electrode collector plate and a second electrode tab, the second electrode plate corresponding to the first electrode plate,
• wherein edge regions of the first separator and the second separator are fused together, and the second electrode plate is adhered to the first separator or the second separator, and
• wherein the at least two electrode assembly blocks are stacked and aligned with respect to the first separator or the second separator of in at least one of the at least two electrode assembly blocks.

A method of manufacturing an electrode assembly block, the method comprising:

• stacking one or more first electrode plates on a top surface of a first separator sheet such that a portion of a first electrode tab of each of the one or more first electrode plates protrudes from one side of the first separator sheet;
• stacking a second separator sheet on the one or more first electrode plates, the second separator sheet corresponding to the first separator sheet;
• adhering one or more second electrode plates to the second separator sheet such that a bottom surface of each of the one or more second electrode plates is adhered to a top surface of the second separator sheet, each of the one or more second electrode plates corresponding to a respective one of the one or more first electrode plates;
• cutting the first separator sheet and the second separator sheet into a set size by cutting along cutting lines spaced apart from lateral surfaces of each of the one or more first electrode plates and the one or more second electrode plates to form one or more corresponding border portions of each of the first separator sheet and the second separator sheet, the one or more corresponding border portions each extending from the lateral surfaces of each of the one or more first electrode plates and the one or more second electrode plates;
• and
• adhering each of the one or more corresponding border portions of the first separator sheet and the second separator sheet.