ELECTRICITY STORAGE DEVICE AND PACKAGE THEREOF

摘要

[PROBLEMS] To provide an electricity storage device exhibiting excellent connection strength with a circuit board, and to provide a package of such an electricity storage device. [MEANS FOR SOLVING PROBLEMS] The electricity storage device is an electrochemical element comprising an electrode holding container in which a pair of electrodes are arranged through a separator, a planar upper electrode terminal electrically connected with one of the electrodes and fixed to an upper part of the electrode holding container, and a planar lower electrode terminal electrically connected with the other electrode and fixed to a lower part of the electrode holding container. This electricity storage device is characterized in that the surface at the distal end of the upper electrode terminal and the lower electrode terminal is plated, the upper electrode terminal and/or the lower electrode terminal has a through hole and the inner wall of the through hole is plated at least partially.