Plate for battery stack

A plate for a battery stack, comprising:

• a flat-shaped terminal to which an electric wire is connected;
• a plate-shaped housing including a flat upper plate surface and a flat lower plate surface, the plate shaped housing having an accommodating recess where the terminal is accommodated;
• and
• an insulating cover that is attached to the housing and covering the accommodating recess, wherein
• the accommodating recess includes a retaining hole,
• the terminal includes a connection portion that is electrically connected to a counterpart member, and a retaining piece that is inserted into the retaining hole and locked to the retaining hole,
• the retaining piece is a flat-shaped protruding piece that protrudes from one part of an outer peripheral edge of the flat-shaped terminal along a planar direction of the terminal,
• the accommodating recess is a recessed portion that is recessed downward from the flat upper surface of the plate-shaped housing,
• the retaining hole is a hole that is recessed from a side wall of the accommodating recess along a planar bottom surface of the accommodating recess, and
• a lower surface of the insulating cover is directly contacting an upper surface of the terminal and an upper surface of the insulating cover is aligned with the flat upper plate surface of the housing.