A heat pump is a device capable of transferring heat between two adjacent but thermally insulated volumes. One of the two volumes is typically limited and also the volume within which it is desired to obtain a controlled temperature value. The other volume typically in the open field is that capable of absorbing or generating the transferred heat. The device we have developed is composed of a Peltier cell exchanger and control electronics capable of managing the Peltier cells and deciding the direction of the exchange once the reference temperature of the controlled volume is set (hot volume versus cold volume or vice versa) . In order for the pump to operate at maximum efficiency, the controlled volume must be perfectly thermally insulated and can exchange only through the pump. In addition to the Peltier cells, the exchangers have two temperature sensors, one for each side of the cell, this allows the control electronics to know in real time the correct functioning of the cell and the exchange efficiency. Other sensors are placed in the controlled volume. Furthermore, the temperature of the controlled volume can also arrive digitally from another control source, for example the BMS of the battery which knows the temperatures of the lithium cells. The software installed in the control electronics contains the thermal model of the volume to be controlled and manages the cells based on the known model. However, this model is constantly updated in relation to the real behavior of the temperature-controlled volume. The exchanger has two fans, one on each side, aimed at forced ventilation of the two volumes separately. The control unit EVTP activates and deactivates these fans depending on the thermal regulation. The control electronics are powered by 12/15 Volt DC and managed via digital communication based on a dual CAN line.