An electrochemical cell comprising: a) a container having an opening for introducing at least one electrode plate group; b) a closure part for the container having: i) an inner planar surface directed towards the interior of the container, able to be directly connected electrically to a current collector of the electrochemical cell, and, ii) a central portion and a peripheral portion, each comprising an outer surface (5a, 5b) directed towards the outside of the container and capable of serving as a terminal of the electrochemical cell, and having a circular sector or circular crown portion shape when viewed in a direction normal to the outer planar surface, the peripheral portion and the central portion being separated by the inner planar surface iii) a first partition connecting said inner planar surface to said outer planar surface of the peripheral portion, said partition forming an angle ranging from 70° to 120°, with respect to the inner planar surface or the outer planar surface of the peripheral portion, a second partition connecting said inner planar surface to said outer planar surface of the peripheral portion, said partition forming an angle ranging from 70° to 120°, with respect to the inner planar surface or the outer planar surface of the central portion, wherein said first and second partitions have a thickness, and this thickness is suitable for the circulation of a heat-transfer fluid therethrough, wherein the thickness of the partitions is subdivided into several compartments (20a, 20b) and each compartment is adapted to the circulation of a heat-transfer fluid therethrough, (iv) a channel for circulating a heat-transfer fluid from the peripheral portion to the central portion or vice versa. a) a container having an opening for introducing at least one electrode plate group; b) a closure part for the container having: i) an inner planar surface directed towards the interior of the container, able to be directly connected electrically to a current collector of the electrochemical cell, and, ii) a central portion and a peripheral portion, each comprising an outer surface (5a, 5b) directed towards the outside of the container and capable of serving as a terminal of the electrochemical cell, and having a circular sector or circular crown portion shape when viewed in a direction normal to the outer planar surface, the peripheral portion and the central portion being separated by the inner planar surface iii) a first partition connecting said inner planar surface to said outer planar surface of the peripheral portion, said partition forming an angle ranging from 70° to 120°, with respect to the inner planar surface or the outer planar surface of the peripheral portion, a second partition connecting said inner planar surface to said outer planar surface of the peripheral portion, said partition forming an angle ranging from 70° to 120°, with respect to the inner planar surface or the outer planar surface of the central portion, wherein said first and second partitions have a thickness, and this thickness is suitable for the circulation of a heat-transfer fluid therethrough, wherein the thickness of the partitions is subdivided into several compartments (20a, 20b) and each compartment is adapted to the circulation of a heat-transfer fluid therethrough, (iv) a channel for circulating a heat-transfer fluid from the peripheral portion to the central portion or vice versa. i) an inner planar surface directed towards the interior of the container, able to be directly connected electrically to a current collector of the electrochemical cell, and, ii) a central portion and a peripheral portion, each comprising an outer surface (5a, 5b) directed towards the outside of the container and capable of serving as a terminal of the electrochemical cell, and having a circular sector or circular crown portion shape when viewed in a direction normal to the outer planar surface, the peripheral portion and the central portion being separated by the inner planar surface iii) a first partition connecting said inner planar surface to said outer planar surface of the peripheral portion, said partition forming an angle ranging from 70° to 120°, with respect to the inner planar surface or the outer planar surface of the peripheral portion, a second partition connecting said inner planar surface to said outer planar surface of the peripheral portion, said partition forming an angle ranging from 70° to 120°, with respect to the inner planar surface or the outer planar surface of the central portion, wherein said first and second partitions have a thickness, and this thickness is suitable for the circulation of a heat-transfer fluid therethrough, wherein the thickness of the partitions is subdivided into several compartments (20a, 20b) and each compartment is adapted to the circulation of a heat-transfer fluid therethrough, a second partition connecting said inner planar surface to said outer planar surface of the peripheral portion, said partition forming an angle ranging from 70° to 120°, with respect to the inner planar surface or the outer planar surface of the central portion, wherein said first and second partitions have a thickness, and this thickness is suitable for the circulation of a heat-transfer fluid therethrough, wherein the thickness of the partitions is subdivided into several compartments (20a, 20b) and each compartment is adapted to the circulation of a heat-transfer fluid therethrough, (iv) a channel for circulating a heat-transfer fluid from the peripheral portion to the central portion or vice versa.