A thermal regulation system for an electric drive vehicle; the system comprising: - a first and a second loop circuit (15, 16), for circulating a heat transfer fluid; said first loop circuit having a first and a second connection point (C, D) that divide the first loop circuit into a first and a second branch (22, 23); said second loop circuit having a third and a fourth connection point (A, B) that divide the second loop circuit into a third and a fourth branch (24, 25); said first and second connection point (C, D) being able of being connected to said third and fourth connection point (A, B) respectively; - a first pump arranged along said first branch so that it makes the heat transfer fluid flow from the second connection point to the first connection point; - a second pump arranged along said second loop circuit; - a first and a second heat exchanger (12, 20) able to cool the heat transfer fluid and arranged respectively along said first and second loop circuit (15, 16); - a battery pack and an electric/electronic drive unit arranged respectively along said first and second loop circuit (15, 16) for being cooled by the heat transfer fluid; - a control valve switchable between a first configuration, wherein said first and second loop circuit (15, 16) convey respective fluid fluxes independent to each other, and a second configuration, wherein the first connection point communicates with the third connection point and the second connection point communicates with the fourth connection point so that they form a single cooling circuit; wherein in said single cooling circuit of the second configuration, the electric/electronic drive unit and the battery pack are arranged in parallel with each other, so that they can be cooled by the heat transfer fluid at flow rates which are different from each other; said system being characterized in that: - at least one Peltier cell having a hot side and a cold side is arranged along said first loop circuit, so that it heats the heat transfer fluid crossing said first loop circuit by means of said hot side, wherein said Peltier cell is arranged along said second branch of said first loop circuit, and - said battery pack and said electric/electronic drive unit are arranged along said first branch and along said fourth branch respectively. - a first and a second loop circuit (15, 16), for circulating a heat transfer fluid; said first loop circuit having a first and a second connection point (C, D) that divide the first loop circuit into a first and a second branch (22, 23); said second loop circuit having a third and a fourth connection point (A, B) that divide the second loop circuit into a third and a fourth branch (24, 25); said first and second connection point (C, D) being able of being connected to said third and fourth connection point (A, B) respectively; - a first pump arranged along said first branch so that it makes the heat transfer fluid flow from the second connection point to the first connection point; - a second pump arranged along said second loop circuit; - a first and a second heat exchanger (12, 20) able to cool the heat transfer fluid and arranged respectively along said first and second loop circuit (15, 16); - a battery pack and an electric/electronic drive unit arranged respectively along said first and second loop circuit (15, 16) for being cooled by the heat transfer fluid; - a control valve switchable between a first configuration, wherein said first and second loop circuit (15, 16) convey respective fluid fluxes independent to each other, and a second configuration, wherein the first connection point communicates with the third connection point and the second connection point communicates with the fourth connection point so that they form a single cooling circuit; - at least one Peltier cell having a hot side and a cold side is arranged along said first loop circuit, so that it heats the heat transfer fluid crossing said first loop circuit by means of said hot side, wherein said Peltier cell is arranged along said second branch of said first loop circuit, and - said battery pack and said electric/electronic drive unit are arranged along said first branch and along said fourth branch respectively.