SECONDARY BATTERY HAVING MODIFIED ELECTRODE TAB OF PARALLEL-COMBINING STRUCTURE

摘要

PURPOSE: A secondary battery is provided to reinforce the combination strength of an electrode tab with a connection tab and to reduce the defect in welding remarkably. CONSTITUTION: The secondary battery having modified electrode tab of parallel-combining structure comprises a first electrode tab(13) drawn from a first battery; a second electrode tab(23) which is drawn from a second battery, and has a projecting plane protruded upward farther than the first electrode tab(13) and a bottom plane closely combined with the first electrode tab(13); and a connection tab(14) which is extending from an external circuit and is closely combined with both sides of the projecting plane of the second electrode tab(23).