A battery module (100, 100', 200) comprising: a stacked structure including at least a plurality of stacked battery units (20-1 - 20-8; 20'-1 - 20-8'; 210); an insulating rod member passing through the stacked structure; and a tightening member that tightens the stacked structure from both ends of the insulating rod member passing through the stacked structure, wherein each of the battery units (20-1 - 20-8; 20'-1 - 20-8'; 210) includes: a plurality of battery cells (4-1, 4-2); a battery support having a coupling portion through which a first hole penetrating between both end faces of the coupling portion is formed, the battery support holding the battery cells; and a conductive member having a second hole formed therein, and including a close contact portion in close contact with one or another of the both end faces of the coupling portion, and a joining portion (113a,113b) connected to an electrode tab of the battery cell, characterized in that the insulating rod member passes through the first holes and the second holes of the stacked battery units and penetrates through the coupling portions and the close contact portions of the battery units positioned on a line along a stacking direction, and the tightening member tightens the stacked structure to fasten the battery units, so that the close contact portions of the conductive members of adjacent ones of the battery units are brought in close contact with each other and the adjacent battery units are electrically connected with each other, wherein the insulating rod member is a rod member including a rod made of a metallic material and covered with two or more insulating layers.. a stacked structure including at least a plurality of stacked battery units (20-1 - 20-8; 20'-1 - 20-8'; 210); an insulating rod member passing through the stacked structure; and a tightening member that tightens the stacked structure from both ends of the insulating rod member passing through the stacked structure, wherein each of the battery units (20-1 - 20-8; 20'-1 - 20-8'; 210) includes: a plurality of battery cells (4-1, 4-2); a battery support having a coupling portion through which a first hole penetrating between both end faces of the coupling portion is formed, the battery support holding the battery cells; and a conductive member having a second hole formed therein, and including a close contact portion in close contact with one or another of the both end faces of the coupling portion, and a joining portion (113a,113b) connected to an electrode tab of the battery cell, characterized in that the insulating rod member passes through the first holes and the second holes of the stacked battery units and penetrates through the coupling portions and the close contact portions of the battery units positioned on a line along a stacking direction, and the tightening member tightens the stacked structure to fasten the battery units, so that the close contact portions of the conductive members of adjacent ones of the battery units are brought in close contact with each other and the adjacent battery units are electrically connected with each other, wherein the insulating rod member is a rod member including a rod made of a metallic material and covered with two or more insulating layers.. a plurality of battery cells (4-1, 4-2); a battery support having a coupling portion through which a first hole penetrating between both end faces of the coupling portion is formed, the battery support holding the battery cells; and a conductive member having a second hole formed therein, and including a close contact portion in close contact with one or another of the both end faces of the coupling portion, and a joining portion (113a,113b) connected to an electrode tab of the battery cell, characterized in that the insulating rod member passes through the first holes and the second holes of the stacked battery units and penetrates through the coupling portions and the close contact portions of the battery units positioned on a line along a stacking direction, and the tightening member tightens the stacked structure to fasten the battery units, so that the close contact portions of the conductive members of adjacent ones of the battery units are brought in close contact with each other and the adjacent battery units are electrically connected with each other, wherein the insulating rod member is a rod member including a rod made of a metallic material and covered with two or more insulating layers..