A secondary battery module comprising: a plurality of stacked pouch-type secondary batteries; and a cooling plate configured to cool the plurality of stacked pouch-type secondary batteries, wherein each of the plurality of stacked pouch-type secondary batteries includes: an electrode assembly; and an exterior material including first and second accommodation spaces (155a, 155b) formed to be spaced apart from each other, and accommodating the electrode assembly in the first and second accommodation spaces (155a, 155b); wherein each of the plurality of stacked pouch-type secondary batteries includes: a sealing portion and a close contact portion formed by the exterior material in an outer periphery thereof; wherein the sealing portion is formed at three sides of the four sides of each of the plurality of stacked pouch-type secondary batteries and the close contact portion is formed at the other side of each of the plurality of stacked pouch-type secondary batteries, and wherein the cooling plate is configured for cooling the plurality of stacked pouch-type secondary batteries through the close contact portion, characterized in that the close contact portion has a concave portion formed along the longitudinal direction of the close contact portion towards the electrode assembly. a plurality of stacked pouch-type secondary batteries; and a cooling plate configured to cool the plurality of stacked pouch-type secondary batteries, wherein each of the plurality of stacked pouch-type secondary batteries includes: an electrode assembly; and an exterior material including first and second accommodation spaces (155a, 155b) formed to be spaced apart from each other, and accommodating the electrode assembly in the first and second accommodation spaces (155a, 155b); wherein each of the plurality of stacked pouch-type secondary batteries includes: a sealing portion and a close contact portion formed by the exterior material in an outer periphery thereof; wherein the sealing portion is formed at three sides of the four sides of each of the plurality of stacked pouch-type secondary batteries and the close contact portion is formed at the other side of each of the plurality of stacked pouch-type secondary batteries, and wherein the cooling plate is configured for cooling the plurality of stacked pouch-type secondary batteries through the close contact portion, characterized in that the close contact portion has a concave portion formed along the longitudinal direction of the close contact portion towards the electrode assembly. an electrode assembly; and an exterior material including first and second accommodation spaces (155a, 155b) formed to be spaced apart from each other, and accommodating the electrode assembly in the first and second accommodation spaces (155a, 155b); wherein each of the plurality of stacked pouch-type secondary batteries includes: a sealing portion and a close contact portion formed by the exterior material in an outer periphery thereof; wherein the sealing portion is formed at three sides of the four sides of each of the plurality of stacked pouch-type secondary batteries and the close contact portion is formed at the other side of each of the plurality of stacked pouch-type secondary batteries, and wherein the cooling plate is configured for cooling the plurality of stacked pouch-type secondary batteries through the close contact portion, characterized in that the close contact portion has a concave portion formed along the longitudinal direction of the close contact portion towards the electrode assembly. a sealing portion and a close contact portion formed by the exterior material in an outer periphery thereof; wherein the sealing portion is formed at three sides of the four sides of each of the plurality of stacked pouch-type secondary batteries and the close contact portion is formed at the other side of each of the plurality of stacked pouch-type secondary batteries, and wherein the cooling plate is configured for cooling the plurality of stacked pouch-type secondary batteries through the close contact portion, characterized in that the close contact portion has a concave portion formed along the longitudinal direction of the close contact portion towards the electrode assembly.