A battery module, characterized in comprising: a plurality of batteries arranged sequentially in a length direction (L); and a cushion pad disposed between two adjacent batteries in the length direction (L); the cushion pad comprising: a main body portion ; and an extending portion extending outwardly from an end surface of the main body portion in a height direction (H); the extending portion comprising: a pair of convex portions arranged in a width direction from two sides of the extending portion and protruding outwardly in the height direction (H); and a concave portion located between the pair of convex portions and recessed inwardly in the height direction (H) with respect to the pair of convex portions , wherein the cushion pad is made of an elastic compressible material, which ensures that each battery has sufficient expansion space to prevent lithium precipitation and capacity diving in the case where the battery is a lithium ion battery; wherein the extending portion is arranged on the end surface on a lower side of the main body portion in the height direction (H); wherein the battery module comprises a heat exchange plate disposed and fixed to a lower side of the plurality of batteries in the height direction (H); and wherein an apex of the convex portion does not exceed a corresponding surface of the battery in the height direction (H). a plurality of batteries arranged sequentially in a length direction (L); and a cushion pad disposed between two adjacent batteries in the length direction (L); the cushion pad comprising: a main body portion ; and an extending portion extending outwardly from an end surface of the main body portion in a height direction (H); the extending portion comprising: a pair of convex portions arranged in a width direction from two sides of the extending portion and protruding outwardly in the height direction (H); and a concave portion located between the pair of convex portions and recessed inwardly in the height direction (H) with respect to the pair of convex portions , a main body portion ; and an extending portion extending outwardly from an end surface of the main body portion in a height direction (H); the extending portion comprising: a pair of convex portions arranged in a width direction from two sides of the extending portion and protruding outwardly in the height direction (H); and a concave portion located between the pair of convex portions and recessed inwardly in the height direction (H) with respect to the pair of convex portions , a pair of convex portions arranged in a width direction from two sides of the extending portion and protruding outwardly in the height direction (H); and a concave portion located between the pair of convex portions and recessed inwardly in the height direction (H) with respect to the pair of convex portions , wherein the extending portion is arranged on the end surface on a lower side of the main body portion in the height direction (H); wherein the battery module comprises a heat exchange plate disposed and fixed to a lower side of the plurality of batteries in the height direction (H); and wherein an apex of the convex portion does not exceed a corresponding surface of the battery in the height direction (H). <EOS>