Thermal conditioning system

Abstract

The invention relates to a thermal conditioning system (100) for a vehicle, the system comprising: - a heat-transfer fluid circuit (20) comprising: -- a primary loop (20A); -- a secondary loop (20B); - a refrigerant circuit (10) comprising a main refrigerant circulation loop (10A), comprising: — a compressor (15); — a first exchanger (1) jointly arranged on the main refrigerant loop (10A) and on the primary loop (20A); — an expansion device (31); — a second exchanger (2) jointly arranged on the main loop (10A) and on the secondary loop (20B), wherein: - the primary loop (20A) comprises a third heat exchanger (3) thermally coupled to an internal air flow (Fi) inside a passenger compartment of the vehicle; and - the secondary heat-transfer fluid loop (20B) comprises a fourth exchanger (4) thermally coupled to a first element (41) of an electric powertrain of the vehicle.

Description

Description Title: THERMAL CONDITIONING SYSTEM TECHNICAL FIELD [1] The present invention relates to the field of thermal conditioning systems. These systems can in particular equip a motor vehicle. Such systems make it possible to achieve thermal regulation of different parts of the vehicle, such as for example the passenger compartment or an electrical energy storage battery, in the case of an electrically powered vehicle. Heat exchanges are managed mainly by the compression and expansion of a refrigerant fluid within different heat exchangers making it possible to ensure heating or cooling of different parts. Prior art [2] Thermal conditioning systems commonly use a refrigerant loop and a heat transfer fluid loop that exchange heat with the refrigerant. Such systems are therefore called indirect. The refrigerant loop is formed so that the refrigerant transfers heat to a heat transfer fluid in a first two-fluid exchanger. The heat transferred to the heat transfer fluid can then be dissipated in an air flow intended for the passenger compartment in order to heat it. The heat transfer fluid circuit also makes it possible to cool elements of the vehicle's powertrain that dissipate heat, such as the vehicle's electric traction motor or the power electronics controlling the electric motor. For this purpose, another two-fluid exchanger makes it possible to carry out a heat exchange between the heat transfer fluid and the refrigerant in order to cool the heat transfer fluid. [3] Furthermore, the rapid charging needs of batteries require increasing the available cooling power. In order to have high cooling power for the batteries, as well as good homogeneity of the battery temperature, it is known to circulate a dielectric heat transfer fluid inside the battery elements. In this case, an additional two-fluid exchanger is used, in order to carry out a heat exchange between the fluid refrigerant and the dielectric heat transfer fluid. This configuration is complex and expensive to implement because many heat exchangers are used, particularly many bi-fluid heat exchangers. [4] There is therefore a need to have thermal conditioning systems that are easier to integrate, using a reduced number of heat exchangers and simplified circulation circuits for the various fluids. Summary [5] To this end, the present invention proposes a thermal conditioning system for a motor vehicle, comprising: — a heat transfer fluid circuit, in particular a dielectric heat transfer fluid, comprising: -- a primary heat transfer fluid circulation loop, -- a secondary heat transfer fluid circulation loop, -- a first branch of derivation, -- a second branch of derivation, -- a third branch of derivation, — a refrigerant circuit comprising a main refrigerant circulation loop, successively comprising, in a direction of circulation of the refrigerant: — a compression device, — a first heat exchanger, arranged jointly on the main refrigerant loop and on the primary heat transfer fluid loop so as to allow heat exchange between the refrigerant and the heat transfer fluid, — a first relaxation device, — a second heat exchanger, arranged jointly on the main refrigerant loop and on the secondary heat transfer fluid loop so as to allow heat exchange between the refrigerant and the heat transfer fluid, in which: — the primary heat transfer fluid loop comprises a third heat exchanger configured to exchange heat with an air flow inside a passenger compartment of the vehicle, and - the secondary heat transfer fluid loop comprises a fourth heat exchanger configured to be thermally coupled to a first element of an electric powertrain of the vehicle, - the first branch connection connects a first connection point arranged on the primary loop between the first heat exchanger and the third heat exchanger to a second connection point arranged on the secondary loop between the second heat exchanger and the fourth heat exchanger, - the second branch connecting a third connection point arranged on the primary loop between the third heat exchanger and the first heat exchanger to a fourth connection point arranged on the secondary loop between the fourth heat exchanger and the second heat exchanger, - the third branch branch connecting a fifth connection point arranged on the first branch branch to a sixth connection point arranged on the second branch branch, the third branch branch comprising a fifth heat exchanger, in which the fifth heat exchanger is configured to exchange heat with an air flow outside the passenger compartment of the vehicle, in which: the refrigerant circuit comprises an auxiliary branch for circulating refrigerant fluid arranged in parallel with the first expansion device and the second exchanger, the auxiliary branch successively comprising a second expansion device and a sixth heat exchanger arranged jointly on the auxiliary refrigerant fluid branch and on a fourth heat transfer fluid branch branch so as to allow heat exchange between the refrigerant fluid and the heat transfer fluid,the fourth branch branch being connected to the secondary loop in parallel with the second heat exchanger between a seventh connection point and an eighth connection point, the thermal conditioning system being characterized in that the heat transfer fluid circuit comprises a fifth branch branch connecting a ninth connection point arranged on the fourth branch branch between the sixth heat exchanger and the seventh connection point to a tenth connection point arranged on the secondary loop between the fourth exchanger, heat and the eighth connection point, the fifth branch branch comprising a seventh heat exchanger configured to exchange heat with the airflow inside the vehicle passenger compartment. [6] The heat transfer fluid circuit, in particular the dielectric heat transfer fluid, thus includes the functions of cooling and heating the passenger compartment, thermal management of the first element of the vehicle's electric powertrain, as well as, for certain operating modes, dehumidification. [7] According to an exemplary embodiment of the invention, the seventh connection point is arranged between the second connection point and the fourth heat exchanger. [8] According to an exemplary embodiment of the invention, the eighth connection point is arranged between the tenth connection point and the fourth connection point. [9] The first element of the vehicle's electric powertrain may be an electrical energy storage battery. The battery may provide the energy required by an electric traction motor of the vehicle. Thermal coupling with the fourth heat exchanger may be achieved via a heat transfer fluid circulation loop, not shown in the various figures. Thermal coupling may also be achieved by bringing one or more walls of the fourth heat exchanger into contact with one or more walls of the battery.

[0010] According to one embodiment, the fourth heat exchanger can be formed by the battery itself, that is to say that the heat-dissipating battery is directly in contact with the heat transfer fluid, when the latter is a dielectric heat transfer fluid.

[0011] In particular, the electrical and / or electronic elements of the battery may be immersed, or partially immersed, in a dielectric heat transfer fluid.

[0012] The total or partial immersion of the electrical and / or electronic elements of the battery makes it possible to improve thermal exchanges with the heat transfer fluid by eliminating thermal resistance, particularly contact resistance, between the fourth heat exchanger and said electrical and / or electronic elements.

[0013] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises: - a sixth branch connection connecting an eleventh connection point arranged on the secondary loop between the second heat exchanger and the second connection point to the fourth branch connection, - a seventh branch branch connecting a twelfth connection point arranged on the secondary loop between the seventh connection point and the fourth heat exchanger to a thirteenth connection point arranged on the secondary loop between the fourth heat exchanger and the tenth connection point, the seventh branch branch comprising an eighth heat exchanger, in which the eighth heat exchanger is configured to exchange heat with an air flow outside the passenger compartment of the vehicle.

[0014] The role of the eighth heat exchanger is in particular to thermally regulate the first element of the vehicle's electric powertrain.

[0015] According to an exemplary embodiment of the invention, the sixth branch branch connects the eleventh connection point to the ninth connection point.

[0016] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises an eighth bypass branch connected to the secondary loop in parallel with the fourth heat exchanger, the eighth bypass branch comprising a ninth heat exchanger configured to be thermally coupled to a second element of the electric powertrain of the vehicle.

[0017] The role of the ninth heat exchanger is to thermally regulate the second element of the vehicle's electric powertrain.

[0018] The second element of the vehicle's electric powertrain may be, for example, an electronic control unit for an electric traction motor and / or an electric traction motor of the vehicle.

[0019] The ninth heat exchanger may be formed by the electronic control unit of the electric motor itself and / or by the electric motor itself, i.e. the electronic control unit of the electric motor and / or the heat-dissipating electric motor are in direct contact with the heat transfer fluid, when the latter is a dielectric heat transfer fluid.

[0020] In particular, the electrical and / or electronic elements of the electronic control unit of the electric motor and / or the electric motor may be immersed, or partially immersed, in a dielectric heat transfer fluid.

[0021] The total or partial immersion of the electrical and / or electronic elements of the electronic control unit of the electric motor and / or the electric motor makes it possible to improve the thermal exchanges with the heat transfer fluid by eliminating thermal resistance, in particular contact resistance, between the ninth heat exchanger and said electrical and / or electronic elements.

[0022] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises: - a ninth branch connecting a fourteenth connection point arranged on the secondary loop between the fourth heat exchanger and the thirteenth connection point to a fifteenth point arranged on the primary loop between the third heat exchanger and the third connection point, - a tenth branch connection connecting the primary loop to a sixteenth connection point located on the seventh branch connection.

[0023] The heat transfer fluid circuit, in particular the dielectric heat transfer fluid, thus includes the heating function of the first element of the vehicle's electric powertrain by the first heat exchanger.

[0024] According to an exemplary embodiment of the invention, the eighth branch branch connects the twelfth connection point to the fourteenth connection point.

[0025] According to an exemplary embodiment of the invention, the tenth branch branch connects the first connection point to the sixteenth connection point.

[0026] According to an exemplary embodiment of the invention, the sixteenth connection point is arranged between the eighth heat exchanger and the twelfth connection point.

[0027] According to an exemplary embodiment of the invention: - the primary loop of the heat transfer fluid circuit comprises a first circulation pump, in particular arranged between the third connection point and the first heat exchanger, - the secondary loop of the heat transfer fluid circuit comprises a second circulation pump, in particular arranged between the seventh connection point and the fourth heat exchanger, - the secondary loop of the heat transfer fluid circuit comprises a third circulation pump, in particular arranged between the fourth connection point and the second heat exchanger, - the fourth branch of the heat transfer fluid circuit comprises a fourth circulation pump, in particular arranged between the eighth connection point and the sixth heat exchanger.

[0028] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises: - a first three-way valve arranged jointly on the secondary loop and on the fourth branch of the bypass. - a second three-way valve arranged jointly on the secondary loop and on the first branch, - a third three-way valve arranged jointly on the first branch of the bypass and on the third branch of the bypass, - a fourth three-way valve arranged jointly on the second branch of the bypass and on the third branch of the bypass.

[0029] According to an exemplary embodiment of the invention, the seventh connection point is part of the first three-way valve.

[0030] The first three-way valve is configured to selectively: - allow circulation of heat transfer fluid in the secondary loop and between the secondary loop and the fourth branch, or - allow circulation of heat transfer fluid between the fourth branch of the bypass and the portion of the secondary loop between the seventh connection point and the second connection point and prohibit circulation in the portion of the secondary loop between the seventh connection point and the twelfth connection point, or - allow circulation of heat transfer fluid in the secondary loop and prohibit circulation between the secondary loop and the fourth branch.

[0031] According to an exemplary embodiment of the invention, the second connection point is part of the second three-way valve.

[0032] The second three-way valve is configured to selectively: - allow circulation of heat transfer fluid in the secondary loop and prohibit circulation of heat transfer fluid between the secondary loop and the first branch, or - allow circulation of heat transfer fluid in the secondary loop and between the secondary loop and the first branch.

[0033] According to an exemplary embodiment of the invention, the fifth connection point is part of the third three-way valve.

[0034] The third three-way valve is configured to selectively: - allow circulation of heat transfer fluid between the first branch of the bypass and the third branch of the bypass and prohibit circulation of heat transfer fluid between the first branch of the bypass and the primary loop, or - allow circulation of heat transfer fluid between the first branch of the bypass and the third branch of the bypass and prohibit circulation of heat transfer fluid between the first branch of the bypass and the secondary loop.

[0035] According to an exemplary embodiment of the invention, the sixth connection point is part of the fourth three-way valve.

[0036] The fourth three-way valve is configured to selectively: - allow circulation of heat transfer fluid between the second branch of the bypass and the third branch of the bypass and prohibit circulation of heat transfer fluid between the second branch of the bypass and the primary loop, or - allow circulation of heat transfer fluid between the second branch of the bypass and the third branch of the bypass and prohibit circulation of heat transfer fluid between the second branch of the bypass and the secondary loop.

[0037] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises a fifth three-way valve arranged jointly on the secondary loop and on the seventh bypass branch.

[0038] According to an exemplary embodiment of the invention, the thirteenth connection point is part of the fifth three-way valve.

[0039] The fifth three-way valve is configured to selectively: - allow circulation of heat transfer fluid in the secondary loop and prohibit circulation of heat transfer fluid between the secondary loop and the seventh branch, or - authorize circulation of heat transfer fluid between the portion of the secondary loop between the thirteenth connection point and the fourteenth connection point and the seventh branch branch and prohibit circulation of heat transfer fluid in the portion of the secondary loop between the thirteenth connection point and the tenth connection point.

[0040] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises a first four-way valve arranged jointly on the fourth bypass branch, on the fifth bypass branch and on the sixth bypass branch.

[0041] According to an exemplary embodiment of the invention, the ninth connection point is part of the first four-way valve.

[0042] The first four-way valve is configured to selectively: - allow circulation of heat transfer fluid in the fourth branch of the bypass and prohibit circulation of heat transfer fluid in the fifth branch of the bypass and in the sixth branch of the bypass, or - allow circulation of heat transfer fluid between the fifth branch of the bypass and the sixth branch of the bypass and prohibit circulation of heat transfer fluid in the fourth branch of the bypass, or - allow circulation of heat transfer fluid between the portion of the fourth branch of the branch between the ninth connection point and the eighth connection point and the fifth branch of the branch and prohibit circulation of heat transfer fluid, on the one hand, in the sixth branch of the branch, and, on the other hand part, in the portion of the fourth branch of derivation between the ninth connection point and the seventh connection point, or - allow circulation of heat transfer fluid between the portion of the fourth branch branch between the ninth connection point and the eighth connection point, the fifth branch branch and the sixth branch branch and prohibit circulation of heat transfer fluid in the portion of the fourth branch branch between the ninth connection point and the seventh connection point.

[0043] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises a second four-way valve arranged jointly on the secondary loop, on the seventh bypass branch and on the eighth bypass branch.

[0044] According to an exemplary embodiment of the invention, the twelfth connection point is part of the second four-way valve.

[0045] The second four-way valve is configured to selectively: - authorize circulation of heat transfer fluid between the portion of the secondary loop between the twelfth connection point and the fourteenth connection point and the seventh branch branch and prohibit circulation of heat transfer fluid in the eighth branch branch and in the portion of the secondary loop between the twelfth connection point and the seventh connection point, or - allow circulation of heat transfer fluid between, on the one hand, the portion of the secondary loop between the twelfth connection point and the fourteenth connection point and the seventh branch branch and, on the other hand, the eighth branch branch and the portion of the secondary loop between the twelfth connection point and the seventh connection point, or - allow circulation of heat transfer fluid in the secondary loop and prohibit circulation of heat transfer fluid in the seventh branch of the bypass and in the eighth branch of the bypass, or - authorize circulation of heat transfer fluid between the portion of the secondary loop between the twelfth connection point and the fourteenth connection point and the eighth branch branch and prohibit the circulation of fluid heat transfer fluid in the seventh branch and in the portion of the secondary loop between the twelfth connection point and the seventh connection point, or - allow circulation of heat transfer fluid in the secondary loop and between the secondary loop and the eighth branch of the bypass and prohibit circulation of heat transfer fluid in the seventh branch of the bypass.

[0046] According to an exemplary embodiment of the invention, the heat transfer fluid circuit comprises: - a third four-way valve arranged jointly on the secondary loop, on the eighth branch of the bypass and on the ninth branch of the bypass, - a fourth four-way valve arranged jointly on the primary loop, on the first branch and on the tenth branch.

[0047] According to an exemplary embodiment of the invention, the fourteenth connection point is part of the third four-way valve.

[0048] The third four-way valve is configured to selectively: - authorize circulation of heat transfer fluid between the portion of the secondary loop between the fourteenth connection point and the twelfth connection point and the ninth branch branch and prohibit circulation of heat transfer fluid in the eighth branch branch and in the portion of the secondary loop between the fourteenth connection point and the thirteenth connection point, or - allow circulation of heat transfer fluid in the secondary loop and prohibit circulation of heat transfer fluid in the eighth branch of the bypass and in the ninth branch of the bypass, or - authorize circulation of heat transfer fluid between the portion of the secondary loop between the fourteenth connection point and the twelfth connection point and the eighth branch branch and prohibit circulation of heat transfer fluid in the ninth branch branch and in the portion of the secondary loop between the fourteenth connection point and the thirteenth connection point, or - allow circulation of heat transfer fluid in the secondary loop and between the secondary loop and the eighth branch and prohibit circulation of heat transfer fluid in the ninth branch, or - allow circulation of heat transfer fluid between, on the one hand, the portion of the secondary loop between the fourteenth connection point and the twelfth connection point and the ninth branch branch and, on the other hand, the eighth branch branch and the portion of the secondary loop between the fourteenth connection point and the thirteenth connection point.

[0049] According to an exemplary embodiment of the invention, the first connection point is part of the fourth four-way valve.

[0050] The fourth four-way valve is configured to selectively: - authorize circulation of heat transfer fluid between the portion of the primary loop between the first connection point and the third connection point and the tenth branch branch and prohibit circulation of heat transfer fluid in the first branch branch and in the portion of the primary loop between the first connection point and the fifteenth connection point, or - authorize circulation of heat transfer fluid between the portion of the primary loop between the first connection point and the third connection point and the first branch branch and prohibit circulation of heat transfer fluid in the tenth branch branch and in the portion of the primary loop between the first connection point and the fifteenth connection point, or - allow circulation of heat transfer fluid in the primary loop and between the primary loop and the first branch of the bypass and prohibit circulation of heat transfer fluid in the tenth branch of the bypass, or - allow circulation of heat transfer fluid in the primary loop and between the primary loop and the tenth branch of the bypass and prohibit circulation of heat transfer fluid in the first branch of the bypass, or - allow circulation of heat transfer fluid in the primary loop and prohibit circulation of heat transfer fluid in the first branch of the bypass and in the tenth branch of the bypass.

[0051] According to an exemplary embodiment of the invention, the refrigerant fluid used by the refrigerant fluid circuit is a chemical fluid such as R1234yf. Other fluids refrigerants could be used, such as R134a, R744 or R290.

[0052] According to an exemplary embodiment of the invention, the heat transfer fluid used by the heat transfer fluid circuit may be water, a mixture of water and ethylene glycol or a dielectric heat transfer fluid.

[0053] The invention also relates to a method of operating a thermal conditioning system as described previously, in a mode known as cooling of the first element of the electric powertrain of the vehicle, operating in particular for an outside temperature above 20°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the secondary loop, in the second pump, in the fourth heat exchanger, circulates in the secondary loop, and divides at the eighth connection point into: -- a second flow of heat transfer fluid circulating in the fourth branch of the bypass, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth branch of the bypass, and reaches the seventh connection point, -- a third flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, and reaches the seventh connection point, - the second flow of heat transfer fluid and the third flow of heat transfer fluid joining at the seventh connection point to reform the first flow of heat transfer fluid before returning to the second pump, - a fourth flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, in the first bypass branch, in the third bypass branch, in the fifth heat exchanger where it gives off heat to the outside air flow, in the third bypass branch, in the second bypass branch, in the primary loop and returns to the first pump.

[0054] The invention also relates to a method of operating a thermal conditioning system as described previously, in a mode known as cooling of the first element of the electric powertrain of the vehicle and heating of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the secondary loop, in the second pump, in the fourth heat exchanger, circulates in the secondary loop, and divides at the level of the eighth point of connection in: -- a second flow of heat transfer fluid circulating in the fourth branch of the bypass, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth branch of the bypass, and reaches the seventh connection point, -- a third flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, and reaches the seventh connection point, - the second flow of heat transfer fluid and the third flow of heat transfer fluid joining at the seventh connection point to reform the first flow of heat transfer fluid before returning to the second pump, - a fourth flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop and is divided at the first connection point into: -- a fifth flow of heat transfer fluid circulating in the first branch, in the third branch, in the fifth heat exchanger where it gives off heat to the outside air flow, in the third branch, in the second branch and reaches the third connection point, -- a sixth flow of heat transfer fluid circulating in the primary loop, in the third heat exchanger where it gives off heat to the interior air flow, in the primary loop and reaches the third connection point, - the fifth heat transfer fluid flow and the sixth heat transfer fluid flow joining at the third connection point to reform the fourth heat transfer fluid flow before returning to the first pump.

[0055] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as cooling of the first element of the electric powertrain of the vehicle and of the passenger compartment, operating in particular for an outside temperature above 20°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates in the secondary loop and divides at the eighth connection point into: -- a second flow of heat transfer fluid circulating in the fourth bypass branch, in the fourth pump, in the sixth heat exchanger where it transfers heat to the refrigerant fluid, circulates in the fourth bypass branch, in the fifth bypass branch, in the seventh heat exchanger where it receives heat from the interior air flow, in the fifth bypass branch and joins the tenth connection point, -- a third flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, and reaches the tenth connection point, - the second flow of heat transfer fluid and the third flow of heat transfer fluid joining at the tenth connection point to reform the first flow of heat transfer fluid, - a fourth flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, in the first bypass branch, in the third bypass branch, in the fifth heat exchanger where it gives off heat to the outside air flow, in the third branch bypass, in the second bypass branch, in the primary loop and returns to the first pump.

[0056] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment, operating in particular for an outside temperature between 0°C and 20°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates in the secondary loop and divides at the eighth connection point into: -- a second flow of heat transfer fluid circulating in the fourth bypass branch, in the fourth pump, in the sixth heat exchanger where it transfers heat to the refrigerant fluid, circulates in the fourth bypass branch, in the fifth bypass branch, in the seventh heat exchanger where it receives heat from the interior air flow, in the fifth bypass branch and joins the tenth connection point, -- a third flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, and reaches the tenth connection point, - the second flow of heat transfer fluid and the third flow of heat transfer fluid joining at the tenth connection point to reform the first flow of heat transfer fluid, - a fourth flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop and is divided at the first connection point into: -- a fifth flow of heat transfer fluid circulating in the first branch, in the third branch, in the fifth heat exchanger where it gives off heat to the outside air flow, in the third branch, in the second branch and reaches the third connection point, -- a sixth flow of heat transfer fluid circulating in the primary loop, in the third heat exchanger where it gives off heat to the interior air flow, in the primary loop and reaches the third connection point, - the fifth heat transfer fluid flow and the sixth heat transfer fluid flow joining at the third connection point to reform the fourth heat transfer fluid flow before returning to the first pump.

[0057] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and active cooling of the passenger compartment, operating in particular for an outside temperature between 20°C and 30°C, in which: - a flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and circulates successively in the first heat exchanger where it gives off heat to the heat transfer fluid, in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, and returns to the compression device, - a first flow of heat transfer fluid circulates successively in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, in the seventh bypass branch, in the eighth heat exchanger where it gives off heat to the outside air flow, in the seventh branch branch, in the secondary loop before returning to the second pump, - a second flow of heat transfer fluid circulates successively in the secondary loop, in the third pump, in the second heat exchanger where it transfers heat to the refrigerant fluid, circulates in the secondary loop, in the sixth bypass branch, in the fifth bypass branch, in the seventh heat exchanger where it receives heat from the interior air flow, in the fifth bypass branch, in the secondary loop before returning to the third pump, - a third flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, in the first bypass branch, in the third bypass branch, in the fifth heat exchanger where it gives up heat to the outside air flow, in the third bypass branch, in the second bypass branch, in the primary loop and returns to the first pump.

[0058] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment, operating in particular for an outside temperature between 0°C and 20°C, in which: - a flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and circulates successively in the first heat exchanger where it gives off heat to the heat transfer fluid, in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, and returns to the compression device, - a first flow of heat transfer fluid circulates successively in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, in the seventh bypass branch, in the eighth heat exchanger where it gives off heat to the outside air flow, in the seventh bypass branch, in the secondary loop before returning to the second pump, - a second flow of heat transfer fluid circulates successively in the secondary loop, in the third pump, in the second heat exchanger where it transfers heat to the refrigerant fluid, circulates in the secondary loop, in the sixth bypass branch, in the fifth bypass branch, in the seventh heat exchanger where it receives heat from the interior air flow, in the fifth bypass branch, in the secondary loop before returning to the third pump, - a third flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop and is divided at the first connection point into: -- a fourth flow of heat transfer fluid circulating in the first branch of bypass, in the third branch of bypass, in the fifth heat exchanger where it gives off heat to the flow of outside air, in the third branch of bypass, in the second branch of bypass and reaches the third connection point, -- a fifth flow of heat transfer fluid circulating in the primary loop, in the third heat exchanger where it gives off heat to the interior air flow, in the primary loop and reaches the third connection point, - the fourth heat transfer fluid flow and the fifth heat transfer fluid flow joining at the third connection point to reform the third heat transfer fluid flow before returning to the first pump.

[0059] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment, operating in particular for an outside temperature between 0°C and 20°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, in the seventh bypass branch, in the eighth heat exchanger where it gives off heat to the outside air flow, in the seventh bypass branch, in the secondary loop before returning to the second pump, - a second flow of heat transfer fluid circulates in the secondary loop and divides at the eighth connection point into: -- a third flow of heat transfer fluid circulating in the fourth branch of the bypass, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth branch of the bypass, and joins the ninth connection point, -- a fourth flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, in the sixth branch, and reaches the ninth connection point, - the third heat transfer fluid flow and the fourth heat transfer fluid flow joining at the ninth connection point to reform the second heat transfer fluid flow, the second heat transfer fluid flow circulating in the fifth bypass branch, in the seventh heat exchanger where it receives heat from the indoor air flow, in the fifth bypass branch and joins the secondary loop, - a fifth flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop and is divided at the first connection point into: -- a sixth flow of heat transfer fluid circulating in the first branch of bypass, in the third branch of bypass, in the fifth heat exchanger where it gives off heat to the flow of outside air, in the third branch of bypass, in the second branch of bypass and reaches the third connection point, -- a seventh flow of heat transfer fluid circulating in the primary loop, in the third heat exchanger where it gives off heat to the interior air flow, in the primary loop and reaches the third connection point, - the sixth heat transfer fluid flow and the seventh heat transfer fluid flow joining at the third connection point to reform the fifth heat transfer fluid flow before returning to the first pump.

[0060] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and cooling of the passenger compartment, operating in particular for an outside temperature between 20°C and 30°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, in the seventh bypass branch, in the eighth heat exchanger where it gives off heat to the outside air flow, in the seventh branch branch, in the secondary loop before returning to the second pump, - a second flow of heat transfer fluid circulates in the secondary loop and divides at the eighth connection point into: -- a third flow of heat transfer fluid circulating in the fourth branch of the bypass, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth branch of the bypass, and joins the ninth connection point, -- a fourth flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, in the sixth branch, and reaches the ninth connection point, - the third heat transfer fluid flow and the fourth heat transfer fluid flow joining at the ninth connection point to reform the second heat transfer fluid flow, the second heat transfer fluid flow circulating in the fifth bypass branch, in the seventh heat exchanger where it receives heat from the indoor air flow, in the fifth bypass branch and joins the secondary loop, - a fifth flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, in the first bypass branch, in the third bypass branch, in the fifth heat exchanger where it gives off heat to the outside air flow, in the third bypass branch, in the second bypass branch, in the primary loop and returns to the first pump.

[0061] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as passive heating of the first element of the electric powertrain of the vehicle and heating of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, in the third heat exchanger where it gives off heat to the flow of interior air, in the primary loop before returning to the first pump, - a second flow of heat transfer fluid circulates successively in the secondary loop, in the second pump, in the fourth heat exchanger, circulates in the secondary loop, in the eighth bypass branch, in the ninth heat exchanger, in the eighth bypass branch, in the secondary loop before joining the second pump, - a third flow of heat transfer fluid circulates successively in the first bypass branch, in the third bypass branch, in the fifth heat exchanger where it receives heat from the outside air flow, in the third bypass branch, in the second bypass branch and divides at the fourth connection point into: -- a fourth flow of heat transfer fluid circulating in the secondary loop, in the fourth bypass branch, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth bypass branch, in the secondary loop, and reaches the second connection point, -- a fifth flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, and reaches the second point connection, - the fourth heat transfer fluid flow and the fifth heat transfer fluid flow joining at the second connection point to reform the third heat transfer fluid flow before returning to the fifth heat exchanger.

[0062] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as cooling of the first and second elements of the electric powertrain of the vehicle and heating of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, in the third heat exchanger where it gives off heat to the flow of interior air, in the primary loop before returning to the first pump, - a second flow of heat transfer fluid circulates in the secondary loop and is divided into: -- a third flow of heat transfer fluid circulating in the fourth branch of the bypass, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth branch of the bypass and reaches the seventh connection point, -- a fourth flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, and reaches the seventh connection point, - the third heat transfer fluid flow and the fourth heat transfer fluid flow joining at the seventh connection point to reform the second heat transfer fluid flow, the second heat transfer fluid flow circulates in the secondary loop and is divided into: -- a fifth flow of heat transfer fluid circulating in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, and reaches the fourteenth connection point, -- a sixth flow of heat transfer fluid circulating in the eighth branch of the bypass, in the ninth heat exchanger, in the eighth branch of the bypass, and joining the fourteenth connection point, - the fifth heat transfer fluid flow and the sixth heat transfer fluid flow joining at the fourteenth connection point to reform the second heat transfer fluid flow.

[0063] The invention also relates to a method of operating a thermal conditioning system as described previously, in a mode known as heating of the first element of the electric powertrain of the vehicle, operating in particular for an outside temperature below 20°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first flow of refrigerant fluid before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, in the tenth bypass branch, in the seventh bypass branch, in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, in the ninth bypass branch, in the primary loop before returning to the first pump, - a second flow of heat transfer fluid circulates successively in the first bypass branch, in the third bypass branch, in the fifth heat exchanger where it receives heat from the outside air flow, in the third bypass branch, in the second bypass branch and divides at the fourth connection point into: -- a third flow of heat transfer fluid circulating in the secondary loop, in the fourth bypass branch, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth bypass branch, in the secondary loop, and reaches the second connection point, -- a fourth flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, and reaches the second connection point, - the third heat transfer fluid flow and the fourth heat transfer fluid flow joining at the second connection point to reform the second heat transfer fluid flow before returning to the fifth heat exchanger.

[0064] The invention also relates to a method of operating a thermal conditioning system as described above, in a mode known as heating of the first element of the electric powertrain of the vehicle and of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes to high pressure, and circulates successively in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, and is divided into: -- a second flow circulating in the primary loop, in the third heat exchanger where it gives off heat to the interior air flow, in the primary loop and joins the fifteenth connection point, -- a third flow circulating in the tenth bypass branch, in the seventh bypass branch, in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, in the ninth bypass branch and joins the fifteenth connection point, - the second heat transfer fluid flow rate and the third heat transfer fluid flow rate joining at the fifteenth connection point to reform the first heat transfer fluid flow rate, the first heat transfer fluid flow rate circulating in the primary loop before returning to the first pump, - a fourth flow of heat transfer fluid circulates successively in the first bypass branch, in the third bypass branch, in the fifth heat exchanger where it receives heat from the outside air flow, in the third bypass branch, in the second bypass branch and is divided at the fourth connection point into: -- a fifth flow of heat transfer fluid circulating in the secondary loop, in the fourth bypass branch, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth branch of the diversion, in the secondary loop, and joins the second connection point, -- a sixth flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, and reaches the second connection point, - the fifth heat transfer fluid flow and the sixth heat transfer fluid flow joining at the second connection point to reform the fourth heat transfer fluid flow before returning to the fifth heat exchanger.

[0065] The invention also relates to a method of operating a thermal conditioning system as described previously, in a mode known as cooling the first element of the electric powertrain of the vehicle and heating the second element of the electric powertrain of the vehicle, operating in particular for an outside temperature below 0°C, in which: - a first flow of refrigerant fluid circulates in the compressor where it passes at high pressure, and successively circulates in the first heat exchanger where it gives off heat to the heat transfer fluid, is divided into: -- a second flow of refrigerant fluid circulating in the first expansion device where it passes at low pressure, in the second heat exchanger where it absorbs heat from the heat transfer fluid, -- a third flow of refrigerant fluid circulating in the second expansion device where it passes at low pressure, in the sixth heat exchanger where it absorbs heat from the heat transfer fluid, - the second refrigerant flow and the third refrigerant flow joining to reform the first refrigerant flow before returning to the compression device, - a first flow of heat transfer fluid circulates successively in the primary loop, in the first pump, in the first heat exchanger where it receives heat from the refrigerant fluid, in the primary loop, and is divided into: -- a second flow circulating in the primary loop, in the third heat exchanger where it gives off heat to the interior air flow, in the primary loop and joins the fifteenth connection point, -- a third flow circulating in the tenth bypass branch, in the seventh bypass branch, in the secondary loop, in the second pump, in the fourth heat exchanger, in the secondary loop, in the ninth bypass branch and joins the fifteenth connection point, - the second heat transfer fluid flow rate and the third heat transfer fluid flow rate joining at the fifteenth connection point to reform the first heat transfer fluid flow rate, the first heat transfer fluid flow rate circulating in the primary loop before returning to the first pump, - a fourth flow of heat transfer fluid circulates in the secondary loop and is divided into: -- a fifth flow of heat transfer fluid circulating in the fourth branch of the bypass, in the fourth pump, in the sixth heat exchanger where it gives off heat to the refrigerant fluid, circulates in the fourth branch of the bypass and reaches the seventh connection point, -- a sixth flow of heat transfer fluid circulating in the secondary loop, in the third pump, in the second heat exchanger where it gives off heat to the refrigerant fluid, circulates in the secondary loop, and reaches the seventh connection point, - the fifth heat transfer fluid flow and the sixth heat transfer fluid flow joining at the seventh connection point to reform the fourth heat transfer fluid flow, the fourth heat transfer fluid flow circulates in the secondary loop, in the eighth bypass branch, in the ninth heat exchanger, in the eighth bypass branch and joins the secondary loop. Brief description of the drawings

[0066] Other features, details and advantages will become apparent upon reading the detailed description below, and upon analyzing the attached drawings, in which:

[0067] [Fig. 1] is a schematic view of a thermal conditioning system according to one embodiment of the invention,

[0068] [Fig. 2] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called cooling of the first element of the electric traction chain of the vehicle,

[0069] [Fig. 3] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called cooling of the first element of the electric powertrain of the vehicle and heating of the passenger compartment,

[0070] [Fig. 4] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called cooling of the first element of the electric powertrain of the vehicle and the passenger compartment,

[0071] [Fig. 5] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment,

[0072] [Fig. 6] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called passive cooling of the first element of the electric powertrain of the vehicle and active cooling of the passenger compartment,

[0073] [Fig. 7] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called passive cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment,

[0074] [Fig. 8] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called passive cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment,

[0075] [Fig. 9] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called passive cooling of the first element of the electric powertrain of the vehicle and cooling of the passenger compartment,

[0076] [Fig. 10] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called passive heating of the first element of the electric traction chain of the vehicle and heating of the passenger compartment,

[0077] [Fig. 1 1 ] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called cooling of the first and second elements of the electric powertrain of the vehicle and heating of the passenger compartment,

[0078] [Fig. 12] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called heating of the first element of the electric traction chain of the vehicle,

[0079] [Fig. 13] represents a schematic view of the thermal conditioning system of figure 1 according to a first operating mode called heating of the first element of the electric powertrain of the vehicle and the passenger compartment,

[0080] [Fig. 14] represents a schematic view of the thermal conditioning system of Figure 1 according to a first operating mode called cooling of the first element of the electric powertrain of the vehicle and heating of the second element of the electric powertrain of the vehicle. Description of the embodiments

[0081] To facilitate reading the figures, the different elements are not necessarily represented to scale. In these figures, identical elements bear the same references. Some elements or parameters may be indexed, i.e. designated for example by first element or second element, or first parameter and second parameter, etc. This indexing is intended to differentiate similar, but not identical, elements or parameters. This indexing does not imply a priority of one element or parameter over another. The names 'first', 'second', 'third', etc. can thus be interchanged.

[0082] In the following description, the term "a first element upstream of a second element" means that the first element is placed before the second element relative to the direction of circulation, or path, of a fluid. In such a way analogously, the term "a first element downstream of a second element" means that the first element is placed after the second element relative to the direction of circulation, or path, of the fluid in question. In the case of the refrigerant circuit, the term "a first element is upstream of a second element" means that the refrigerant successively passes through the first element, then the second element, without passing through the compression device. In other words, the refrigerant leaves the compression device, possibly passes through one or more elements, then passes through the first element, then the second element, then returns to the compression device, possibly after passing through other elements.

[0083] The expression "a second element is placed between a first element and a third element" means that the shortest path from the first element to the third element passes through the second element.

[0084] When it is specified that a subsystem includes a given element, this does not exclude the presence of other elements in this subsystem.

[0085] For the purposes of this disclosure, the term "exchanger" is equivalent to the term "heat exchanger" and the term "heat exchanger". Similarly, the term "expansion valve" is equivalent to the term "expansion device", and the term "compressor" is equivalent to the term "compression device".

[0086] Each of the expansion devices used can be an electronic expansion valve, a thermostatic expansion valve, or a calibrated orifice. In the case of an electronic expansion valve, the passage section allowing the refrigerant to pass through can be continuously adjusted between a closed position and a maximum opening position. To achieve this, an electronic control module drives an electric motor that moves a movable shutter controlling the passage section offered to the refrigerant.

[0087] The thermal conditioning system 100 to be described may be fitted to a motor vehicle. The motor vehicle is electric or hybrid.

[0088] An electronic control unit, not shown, receives information from various sensors measuring, in particular, the characteristics of the refrigerant fluid. The electronic control unit also receives instructions issued by the occupants of the vehicle, such as for example the desired temperature inside the passenger compartment. The electronic control unit implements control laws allowing the control of the various actuators, in order to ensure the control of the thermal conditioning system 100 so as to ensure the received instructions. A compression device 15 makes it possible to circulate a refrigerant fluid in a closed refrigerant circulation circuit 10. The compression device 15 can be an electric compressor, that is to say a compressor whose moving parts are driven by an electric motor. The compression device 15 comprises a suction side for the low-pressure refrigerant fluid, also called the inlet 15a of the compression device, and a discharge side for the high-pressure refrigerant fluid, also called the outlet 15b of the compression device 15.The internal moving parts of the compressor 15 cause the refrigerant fluid to pass from a low pressure on the inlet side 15a to a high pressure on the outlet side 15b. After expansion in one or more expansion devices, the refrigerant fluid returns to the inlet 15a of the compressor 15 and begins a new thermodynamic cycle.

[0089] The refrigerant fluid used by the refrigerant circuit 10 is here a chemical fluid such as R1234yf. Other refrigerants could be used, such as for example R134a, R744 or even R290.

[0090] The thermal conditioning system 100 comprises a heat transfer fluid circuit 20 in which a heat transfer fluid can circulate under the action of one or more pumps. The circuit comprises different circulation loops connected by different bypass branches. Each connection point between two circuit portions allows the heat transfer fluid to pass into one or other of the circuit portions joining at this connection point. In other words, each connection point is a means of redirecting the heat transfer fluid arriving at this connection point.

[0091] The heat transfer fluid used by the heat transfer fluid circuit 20 may be water, a mixture of water and ethylene glycol or a dielectric heat transfer fluid.

[0092] Interior airflow Fi is defined as an airflow to the passenger compartment of the motor vehicle. This interior airflow can circulate in a heating, ventilation and air conditioning system, often referred to by the English term " HVAC” stands for “Heating, Ventilating and Air Conditioning”. This installation has not been shown in the various figures.

[0093] Outside airflow Fe is defined as airflow that is not directed into the vehicle's passenger compartment. In other words, this airflow remains outside the passenger compartment.

[0094] Figure 1 shows a thermal conditioning system 100 for a motor vehicle.

[0095] The thermal conditioning system 100 comprises: - a heat transfer fluid circuit 20, in particular dielectric heat transfer fluid, comprising: -- a 20A primary heat transfer fluid circulation loop, -- a secondary loop 20B for circulating heat transfer fluid, -- a first branch of derivation 20C, -- a second branch of 20D derivation, -- a third branch of derivation 20E, - a refrigerant circuit 10 comprising a main refrigerant circulation loop 10A, successively comprising, in a direction of circulation of the refrigerant: — a compression device 15, — a first heat exchanger 1, arranged jointly on the main loop 10A of refrigerant fluid and on the primary loop 20A of heat transfer fluid so as to allow an exchange of heat between the refrigerant fluid and the heat transfer fluid, — a first relaxation device 31, — a second heat exchanger 2, arranged jointly on the main loop 10A of refrigerant fluid and on the secondary loop 20B of heat transfer fluid so as to allow heat exchange between the refrigerant fluid and the heat transfer fluid, in which: - the primary heat transfer fluid loop 20A comprises a third heat exchanger 3 configured to exchange heat with an interior air flow Fi to a passenger compartment of the vehicle, and - the secondary heat transfer fluid loop 20B includes a fourth exchanger heat 4 configured to be thermally coupled to a first element 41 of an electric drive chain of the vehicle, - the first branch 20C connects a first connection point 51 arranged on the primary loop 20A between the first heat exchanger 1 and the third heat exchanger 3 to a second connection point 52 arranged on the secondary loop 20B between the second heat exchanger 2 and the fourth heat exchanger 4, - the second branch 20D connecting a third connection point 53 arranged on the primary loop 20A between the third heat exchanger 3 and the first heat exchanger 1 to a fourth connection point 54 arranged on the secondary loop 20B between the fourth heat exchanger 4 and the second heat exchanger 2, - the third branch branch 20E connecting a fifth connection point 55 arranged on the first branch branch 20C to a sixth connection point 56 arranged on the second branch 20D, the third branch 20E comprising a fifth heat exchanger 5, in which the fifth heat exchanger 5 is configured to exchange heat with an outside air flow Fe to the passenger compartment of the vehicle, in which: the refrigerant circuit 10 comprises an auxiliary branch 10B for circulating refrigerant fluid arranged in parallel with the first expansion device 31 and the second heat exchanger 2, the auxiliary branch 10B successively comprising a second expansion device 32 and a sixth heat exchanger 6 arranged jointly on the auxiliary branch 10B of refrigerant fluid and on a fourth branch 20F of heat transfer fluid so as to allow heat exchange between the refrigerant fluid and the heat transfer fluid,the fourth branch branch 20F being connected to the secondary loop 20B in parallel with the first heat exchanger 1 between a seventh connection point, 57 and an eighth connection point 58, the thermal conditioning system 100 being characterized in that the heat transfer fluid circuit 20 comprises a fifth branch branch 20G connecting a ninth connection point 59 arranged on the fourth branch branch 20F between the sixth heat exchanger 6 and the seventh connection point 57 at a tenth connection point 60 arranged on the secondary loop 20B between the fourth heat exchanger 4 and the eighth connection point 58, the fifth branch branch 20G comprising a seventh heat exchanger 7 configured to exchange heat with the interior air flow Fi to the passenger compartment of the vehicle.

[0096] The refrigerant circuit 10 forms a closed circuit configured to circulate a flow of refrigerant. The heat transfer fluid circuit 20 forms a heat transfer fluid circulation circuit, i.e. a closed circuit configured to circulate a flow of heat transfer fluid. In its nominal operating state, i.e. without fault or anomaly, each of the circuits 10, 20 is sealed.

[0097] The primary loop 20A of the heat transfer fluid circuit 20 forms a heat transfer fluid circulation loop. Similarly, the secondary loop 20B of the heat transfer fluid circuit 20 forms a heat transfer fluid circulation loop. The primary loop 20A and the secondary loop 20B are connected by branch branches. Each branch branch comprises exactly one inlet and one outlet. Each branch branch is connected at each of its ends to a portion of the heat transfer fluid circuit. Each connection is made at a connection point.

[0098] The refrigerant and the heat transfer fluid can carry out a heat exchange at the first heat exchanger 1 . The first heat exchanger 1 comprises a first heat exchange section 1 A through which the refrigerant flows and a second heat exchange section 1 B through which the heat transfer fluid flows. A heat exchange is carried out between the first heat exchange section 1 A and the second heat exchange section 1 B of the first heat exchanger 1 .

[0099] In a similar manner, the refrigerant and the heat transfer fluid can carry out a heat exchange at the second heat exchanger 2. The second heat exchanger 2 comprises a first heat exchange section 2A traversed by the refrigerant and a second heat exchange section 2B traversed by the heat transfer fluid. A heat exchange is carried out between the first heat exchange section 2A and the second heat exchange section 2B of the second heat exchanger 2.

[0100] In a similar manner, the refrigerant and the heat transfer fluid can carry out a heat exchange at the sixth heat exchanger 6. The sixth heat exchanger 6 comprises a first heat exchange section 6A through which the refrigerant flows and a second heat exchange section 6B through which the heat transfer fluid flows. A heat exchange is carried out between the first heat exchange section 6A and the second heat exchange section 6B of the sixth heat exchanger 6.

[0101] The first heat exchanger 1 makes it possible to condense at least in part the high-temperature, high-pressure refrigerant fluid at the outlet of the compression device 15. The condensation heat of the refrigerant fluid is thus transferred to the heat transfer fluid of the heat transfer fluid circuit 20. The heat transfer fluid can thus be heated.

[0102] The second heat exchanger 2 and sixth heat exchanger 6 can allow at least part of the low-pressure refrigerant fluid to be evaporated at the outlet, respectively, of the first and second expansion devices 31, 32. The heat of vaporization of the refrigerant fluid is taken from the heat transfer fluid. The latter can thus be cooled.

[0103] The first heat exchanger 1, the second heat exchanger 2 and the sixth heat exchanger 6 are traversed by two different fluids, each heat exchanger is a two-fluid heat exchanger.

[0104] The heat transfer fluid circuit 20, in particular the dielectric heat transfer fluid, thus includes the functions of cooling and heating the passenger compartment, thermal management of the batteries, as well as, for certain operating modes, dehumidification.

[0105] The seventh connection point 57 is arranged between the second connection point 52 and the fourth heat exchanger 4.

[0106] The eighth connection point 58 is arranged between the tenth connection point 60 and the fourth connection point 54.

[0107] The first element 41 of the electric powertrain of the vehicle may be an electrical energy storage battery. The battery may provide the energy required by an electric traction motor of the vehicle. The thermal coupling with the fourth heat exchanger 4 may be achieved via a heat transfer fluid circulation loop, not shown in the various figures. The thermal coupling may also be achieved by bringing one or more walls of the fourth heat exchanger 4 into contact with one or more walls of the battery 41.

[0108] The fourth heat exchanger 4 can be formed by the battery itself, that is to say that the heat-dissipating battery is directly in contact with the heat transfer fluid, when the latter is a dielectric heat transfer fluid.

[0109] In particular, the electrical and / or electronic elements of the battery may be immersed, or partially immersed, in a dielectric heat transfer fluid.

[0110] The third heat exchanger 3 is arranged in the heating, ventilation and air conditioning system of the vehicle. The third heat exchanger 3 is a radiator for heating the passenger compartment.

[0111] A motor-fan unit, not shown, is arranged near the third heat exchanger 3 and can be activated in order to increase the flow rate of the interior air flow Fi if necessary.

[0112] The seventh heat exchanger 7 is arranged in the heating, ventilation and air conditioning system of the vehicle. The seventh heat exchanger 7 is arranged upstream of the third heat exchanger 3 in the heating, ventilation and air conditioning system of the vehicle. The seventh heat exchanger 7 is a radiator for the passenger compartment air conditioning, which can also act as a dehumidifier.

[0113] The fifth heat exchanger 5 is configured to exchange heat with an outside air flow Fe to the passenger compartment of the vehicle. The fifth heat exchanger 5 is for example arranged on the front of the vehicle, behind the grille. A second motor-fan unit, not shown, can be activated in order to increase the flow rate of the outside air flow Fe if necessary.

[0114] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises: - a sixth branch 20H connecting an eleventh connection point 61 arranged on the secondary loop 20B between the second heat exchanger 2 and the second connection point 52 to the fourth branch 20F, - a seventh branch branch 20I connecting a twelfth connection point 62 arranged on the secondary loop 20B between the seventh connection point 57 and the fourth heat exchanger 4 to a thirteenth connection point 63 arranged on the secondary loop 20B between the fourth heat exchanger 4 and the tenth connection point 60, the seventh branch branch 20I comprising an eighth heat exchanger 8, in which the eighth heat exchanger 8 is configured to exchange heat with an outside air flow Fe to the passenger compartment of the vehicle.

[0115] The eighth heat exchanger 8 is configured to exchange heat with an outside air flow Fe to the passenger compartment of the vehicle. The eighth heat exchanger 8 is for example arranged on the front of the vehicle, in particular behind the fifth heat exchanger 5.

[0116] The sixth branch 20H connects the eleventh connection point 61 to the ninth connection point 59.

[0117] According to the illustrated example, the heat transfer fluid circuit 20 of the thermal conditioning system 100 also comprises an eighth bypass branch 20J connected to the secondary loop 20B in parallel with the fourth heat exchanger 4, the eighth bypass branch 20J comprising a ninth heat exchanger 9 configured to be thermally coupled to a second element 42 of the electric powertrain of the vehicle.

[0118] The role of the ninth heat exchanger 9 is to thermally regulate the second element 42 of the vehicle's electric powertrain.

[0119] The second element 42 of the electric traction chain of the vehicle may be, for example, an electronic control unit for an electric traction motor and / or an electric traction motor of the vehicle.

[0120] The ninth heat exchanger 9 can be formed by the electronic control unit of the electric motor itself and / or by the electric motor itself, that is to say that the electronic control unit of the electric motor and / or the heat-dissipating electric motor are in direct contact with the heat transfer fluid, when the latter is a dielectric heat transfer fluid.

[0121] In particular, the electrical and / or electronic elements of the electronic control unit of the electric motor and / or the electric motor may be immersed, or partially immersed, in a dielectric heat transfer fluid.

[0122] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises: - a ninth branch branch 20K connecting a fourteenth connection point 64 arranged on the secondary loop 20B between the fourth heat exchanger 4 and the thirteenth connection point 63 to a fifteenth point 65 arranged on the primary loop 20A between the third heat exchanger 3 and the third connection point 53, - a tenth branch of derivation 20L connecting the primary loop 20A to a sixteenth connection point 66 arranged on the seventh branch of derivation 20I.

[0123] The heat transfer fluid circuit 20, in particular the dielectric heat transfer fluid, thus comprises the heating function of the first element 41 of the electric drive train of the vehicle by the first heat exchanger 1.

[0124] The eighth branch branch 20J connects the twelfth connection point 62 to the fourteenth connection point 64.

[0125] The tenth branch branch 20L connects the first connection point 51 to the sixteenth connection point 66.

[0126] The sixteenth connection point 66 is arranged between the eighth heat exchanger 8 and the twelfth connection point 62.

[0127] The primary loop 20A of the heat transfer fluid circuit 20 comprises a first circulation pump 21, in particular arranged between the third connection point 53 and the first heat exchanger 1. The first pump 21 is configured to circulate the heat transfer fluid from the third connection point 53 to the first heat exchanger 1.

[0128] The secondary loop 20B of the heat transfer fluid circuit 20 comprises a second circulation pump 22, in particular arranged between the twelfth connection point 57 and the fourth heat exchanger 4. The second pump 22 is configured to circulate the heat transfer fluid from the twelfth connection point 62 to the fourth heat exchanger 4.

[0129] The secondary loop 20B of the heat transfer fluid circuit 20 comprises a third circulation pump 23, in particular arranged between the fourth connection point 54 and the second heat exchanger 2. The third pump 23 is configured to circulate the heat transfer fluid from the fourth connection point 54 to the second heat exchanger 2.

[0130] The fourth branch 20F of the heat transfer fluid circuit 20 comprises a fourth circulation pump 24, in particular arranged between the eighth connection point 58 and the sixth heat exchanger 6. The fourth pump 24 is configured to circulate the heat transfer fluid from the eighth connection point 58 to the sixth heat exchanger 6.

[0131] The first, second, third and fourth pumps 21, 22, 23, 24 are electrically controlled.

[0132] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises: - a first three-way valve 26 arranged jointly on the secondary loop 20B and on the fourth branch branch 20F, - a second three-way valve 27 arranged jointly on the secondary loop 20B and on the first bypass branch 20C, - a third three-way valve 28 arranged jointly on the first branch 20C and on the third branch 20E, - a fourth three-way valve 29 arranged jointly on the second branch 20D and on the third branch 20E.

[0133] The seventh connection point 57 is part of the first three-way valve 26.

[0134] The first three-way valve 26 is configured to selectively: - allow circulation of heat transfer fluid in the secondary loop 20B and between the secondary loop 20B and the fourth branch branch 20F, or - authorize circulation of heat transfer fluid between the fourth branch 20F and the portion of the secondary loop 20B between the seventh connection point 57 and the second connection point 52 and prohibit circulation in the portion of the secondary loop 20B between the seventh connection point 57 and the twelfth connection point 62, or - allow circulation of heat transfer fluid in the secondary loop 20B and prohibit circulation between the secondary loop 20B and the fourth branch of the bypass 20F.

[0135] The first three-way valve 26 selectively allows either the sixth heat exchanger 6 to be placed in communication with the fourth and / or the ninth heat exchanger 4, 9, or said sixth heat exchanger 6 to be placed in communication with the fifth heat exchanger 5, or communication to be cut off between said sixth heat exchanger and the portion of the secondary loop comprising the first three-way valve 26.

[0136] The second connection point 52 is part of the second three-way valve 27.

[0137] The second three-way valve 27 is configured to selectively: - authorize circulation of heat transfer fluid in the secondary loop 20B and prohibit circulation of heat transfer fluid between the secondary loop 20B and the first branch branch 20C, or - allow circulation of heat transfer fluid in the secondary loop 20B and between the secondary loop 20B and the first branch branch 20C.

[0138] The second three-way valve 27 makes it possible to selectively connect the second heat exchanger 2 either with the fourth and / or ninth heat exchanger 4, 9, or with the fifth heat exchanger 5.

[0139] The fifth connection point 55 is part of the third three-way valve 28.

[0140] The third three-way valve 28 is configured to selectively: - allow circulation of heat transfer fluid between the first branch of branch 20C and the third branch branch 20E and prohibit circulation of heat transfer fluid between the first branch branch 20C and the primary loop 20A, or - allow circulation of heat transfer fluid between the first branch of bypass 20C and the third branch of bypass 20E and prohibit circulation of heat transfer fluid between the first branch of bypass 20C and the secondary loop 20B.

[0141] The third three-way valve 28 allows the fifth heat exchanger 5 to be selectively placed in communication either with the primary loop 20A or with the secondary loop 20B.

[0142] The sixth connection point 56 is part of the fourth three-way valve 29.

[0143] The fourth three-way valve 29 is configured to selectively: - authorize circulation of heat transfer fluid between the second branch of bypass 20D and the third branch of bypass 20E and prohibit circulation of heat transfer fluid between the second branch of bypass 20D and the primary loop 20A, or - allow circulation of heat transfer fluid between the second branch of bypass 20D and the third branch of bypass 20E and prohibit circulation of heat transfer fluid between the second branch of bypass 20D and the secondary loop 20B.

[0144] The fourth three-way valve 29 allows the fifth heat exchanger 5 to be selectively placed in communication with either the primary loop 20A or the secondary loop 20B.

[0145] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises a fifth three-way valve 30 arranged jointly on the secondary loop 20B and on the seventh bypass branch 20I.

[0146] According to a particular embodiment, the thirteenth connection point 63 is part of the fifth three-way valve 30.

[0147] The fifth three-way valve 30 is configured to selectively: - allow circulation of heat transfer fluid in the secondary loop 20B and prohibit circulation of heat transfer fluid between the secondary loop 20B and the seventh branch of the bypass 20I, or - authorize circulation of heat transfer fluid between the portion of the secondary loop 20B between the thirteenth connection point 63 and the fourteenth connection point 64 and the seventh branch branch 20I and prohibit circulation of heat transfer fluid in the portion of the secondary loop 20B between the thirteenth connection point 63 and the tenth connection point 60.

[0148] The fifth three-way valve 30 makes it possible to selectively connect the fourth and / or ninth heat exchanger 4, 9 either with the eighth heat exchanger 8 or with the second and / or sixth heat exchanger 2, 6.

[0149] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises a first four-way valve 71 jointly arranged on the fourth bypass branch 20F, on the fifth bypass branch 20G and on the sixth bypass branch 20H.

[0150] The ninth connection point 59 is part of the first four-way valve 71.

[0151] The first four-way valve 71 is configured to selectively: - authorize circulation of heat transfer fluid in the fourth branch of bypass 20F and prohibit circulation of heat transfer fluid in the fifth branch of bypass 20G and in the sixth branch of bypass 20H, or - authorize circulation of heat transfer fluid between the fifth branch of bypass 20G and the sixth branch of bypass 20H and prohibit circulation of heat transfer fluid in the fourth branch of bypass 20F, or - authorize circulation of heat transfer fluid between the portion of the fourth branch branch 20F between the ninth connection point 59 and the eighth connection point 58 and the fifth branch branch 20G and prohibit circulation of heat transfer fluid, on the one hand, in the sixth branch branch 20H, and, on the other hand, in the portion of the fourth branch branch 20F between the ninth connection point 59 and the seventh connection point 57, or - allow circulation of heat transfer fluid between the portion of the fourth branch branch 20F between the ninth connection point 59 and the eighth connection point 58, the fifth branch branch 20G and the sixth branch branch 20H and prohibit circulation of heat transfer fluid in the portion of the fourth branch branch 20F between the ninth connection point 59 and the seventh connection point 57.

[0152] The first four-way valve 71 selectively allows either the sixth heat exchanger 6 to be placed in communication with the secondary loop 20B, so that said sixth heat exchanger 6 is in communication with said secondary loop at both ends of the fourth bypass branch 20F and therefore operates in parallel with the second heat exchanger 2, or the sixth heat exchanger 6 to be placed in communication with the fifth bypass branch 20G and therefore with the seventh exchanger 7, or the seventh heat exchanger 7 to be placed in communication with the secondary loop 20B via the sixth bypass branch 20H.

[0153] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises a second four-way valve 72 arranged jointly on the secondary loop 20B, on the seventh bypass branch 20I and on the eighth bypass branch 20J.

[0154] The twelfth connection point 62 is part of the second four-way valve 72.

[0155] The second four-way valve 72 is configured to selectively: - authorize circulation of heat transfer fluid between the portion of the secondary loop 20B between the twelfth connection point 62 and the fourteenth connection point 64 and the seventh branch branch 20I and prohibit circulation of heat transfer fluid in the eighth branch branch 20J and in the portion of the secondary loop 20B between the twelfth connection point 62 and the seventh connection point 57, or - allow circulation of heat transfer fluid between, on the one hand, the portion of the secondary loop 20B between the twelfth connection point 62 and the fourteenth connection point 64 and the seventh branch branch 20I and, on the other hand, the eighth branch branch 20J and the portion of the loop secondary 20B between the twelfth connection point 62 and the seventh connection point 57, or - authorize circulation of heat transfer fluid in the secondary loop 20B and prohibit circulation of heat transfer fluid in the seventh branch of bypass 20I and in the eighth branch of bypass 20J, or - authorize circulation of heat transfer fluid between the portion of the secondary loop 20B between the twelfth connection point 62 and the fourteenth connection point 64 and the eighth branch branch 20J and prohibit circulation of heat transfer fluid in the seventh branch branch 20I and in the portion of the secondary loop 20B between the twelfth connection point 62 and the seventh connection point 57, or - authorize circulation of heat transfer fluid in the secondary loop 20B and between the secondary loop 20B and the eighth branch of the bypass 20J and prohibit circulation of heat transfer fluid in the seventh branch of the bypass 20I.

[0156] The second four-way valve 72 selectively allows either the fourth heat exchanger 4 to be placed in communication with the eighth heat exchanger 8, or the fourth heat exchanger 4 to be placed in communication with the eighth heat exchanger 8 while placing the ninth heat exchanger 9 in communication with the second heat exchanger 2 and / or the sixth heat exchanger 6, or the fourth heat exchanger 4 to be placed in communication with the second heat exchanger 2 and / or the sixth heat exchanger 6, or the fourth heat exchanger 4 to be placed in communication with the ninth heat exchanger 9, or both the fourth heat exchanger 4 and the ninth heat exchanger 9 to be placed in communication with the second heat exchanger 2 and / or the sixth heat exchanger 6.

[0157] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises a third four-way valve 73 arranged jointly on the secondary loop 20B, on the eighth bypass branch 20J and on the ninth bypass branch 20K.

[0158] The fourteenth connection point 64 is part of the third four-way valve 73.

[0159] The third four-way valve 73 is configured to selectively: - authorize circulation of heat transfer fluid between the portion of the secondary loop 20B between the fourteenth connection point 64 and the twelfth connection point 62 and the ninth branch branch 20K and prohibit circulation of heat transfer fluid in the eighth branch branch 20J and in the portion of the secondary loop 20B between the fourteenth connection point 64 and the thirteenth connection point 63, or - authorize circulation of heat transfer fluid in the secondary loop 20B and prohibit circulation of heat transfer fluid in the eighth branch of bypass 20J and in the ninth branch of bypass 20K, or - authorize circulation of heat transfer fluid between the portion of the secondary loop 20B between the fourteenth connection point 64 and the twelfth connection point 62 and the eighth branch branch 20J and prohibit circulation of heat transfer fluid in the ninth branch branch 20K and in the portion of the secondary loop 20B between the fourteenth connection point 64 and the thirteenth connection point 63, or - authorize circulation of heat transfer fluid in the secondary loop 20B and between the secondary loop 20B and the eighth branch of the bypass 20J and prohibit circulation of heat transfer fluid in the ninth branch of the bypass 20K, or - allow circulation of heat transfer fluid between, on the one hand, the portion of the secondary loop 20B between the fourteenth connection point 64 and the twelfth connection point 62 and the ninth branch branch 20K and, on the other hand, the eighth branch branch 20J and the portion of the secondary loop 20B between the fourteenth connection point 64 and the thirteenth connection point 63.

[0160] The third four-way valve 73 selectively allows either the fourth heat exchanger 4 to be put into communication with the ninth bypass branch 20K and in particular with the first heat exchanger 1, or the fourth heat exchanger 4 to be put into communication with the second heat exchanger 2 and / or the sixth heat exchanger 6, or the fourth heat exchanger 4 to be put into communication with the ninth heat exchanger 9, or both the fourth heat exchanger 4 and the ninth heat exchanger 9 are put into communication. heat 4 and the ninth heat exchanger 9 with the second heat exchanger 2 and / or the sixth heat exchanger 6 and / or the eighth heat exchanger 8, or to put into communication on the one hand the fourth heat exchanger 4 with the ninth branch branch 20K and in particular with the first heat exchanger 1, and on the other hand the ninth heat exchanger 9 with the second heat exchanger 2 and / or the sixth heat exchanger 6 and / or the eighth heat exchanger 8.

[0161] The heat transfer fluid circuit 20 of the thermal conditioning system 100 comprises a fourth four-way valve 74 arranged jointly on the primary loop 20A, on the first bypass branch 20C and on the tenth bypass branch 20L.

[0162] The first connection point 51 is part of the fourth four-way valve 74.

[0163] The fourth four-way valve 74 is configured to selectively: - authorize circulation of heat transfer fluid between the portion of the primary loop 20A between the first connection point 51 and the third connection point 53 and the tenth branch branch 20L and prohibit circulation of heat transfer fluid in the first branch branch 20C and in the portion of the primary loop 20A between the first connection point 51 and the fifteenth connection point 65, or - authorize circulation of heat transfer fluid between the portion of the primary loop 20A between the first connection point 51 and the third connection point 53 and the first bypass branch 20C and prohibit circulation of heat transfer fluid in the tenth bypass branch 20L and in the portion of the primary loop 20A between the first connection point 51 and the fifteenth connection point 65, or - authorize circulation of heat transfer fluid in the primary loop 20A and between the primary loop 20A and the first branch of the bypass 20C and prohibit circulation of heat transfer fluid in the tenth branch of the bypass 20L, or - authorize circulation of heat transfer fluid in the primary loop 20A and between the primary loop 20A and the tenth branch of the bypass 20L and prohibit circulation of heat transfer fluid in the first branch of the bypass 20C, or - authorize circulation of heat transfer fluid in the primary loop 20A and prohibit circulation of heat transfer fluid in the first branch of bypass 20C and in the tenth branch of bypass 20L.

[0164] The fourth four-way valve 74 selectively allows either to put the first heat exchanger 1 in communication with the tenth branch of bypass 20L and therefore with the seventh branch of bypass 20I and in particular with the fourth heat exchanger 4 and / or with the ninth heat exchanger 9 and / or with the eighth exchanger 8, or to put the first heat exchanger 1 in communication with the first branch of bypass 20C and in particular with the fifth heat exchanger 5, or to put the first heat exchanger 1 in communication with, on the one hand, the first branch of bypass 20C and in particular with the fifth heat exchanger 5, and, on the other hand, the third heat exchanger 3, or to put the first heat exchanger 1 in communication with, on the one hand,the tenth branch of derivation 20L and therefore with the seventh branch of derivation 20I and in particular with the fourth heat exchanger 4 and / or with the ninth heat exchanger 9 and / or with the eighth exchanger 8, and, on the other hand, the third heat exchanger 3, or to put the first heat exchanger 1 in communication with the third heat exchanger 3.,

[0165] Many operating modes of the thermal conditioning system are possible. Figures 2 to 14 illustrate different operating methods of a conditioning system as described above. In these figures, the portions of each of the circuits 10, 20 traversed by the fluid corresponding to this circuit are represented by solid lines, and the circuit portions which are not traversed by a fluid are represented by dotted lines. In these figures, the white arrows diagrammatically show the direction of circulation of the refrigerant fluid, and the black arrows diagrammatically show the direction of circulation of the heat transfer fluid.

[0166] Figure 2 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode called cooling of the first element of the electric powertrain of the vehicle, operating in particular for an outside temperature above 20°C, in which : - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, circulates in the secondary loop 20B, and is divided at the level of the eighth connection point 58 into: -- a second flow Qc2 of heat transfer fluid circulating in the fourth bypass branch 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth bypass branch 20F, and joins the seventh connection point 57, -- a third flow Qc3 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, and reaches the seventh connection point 57, - the second flow rate Qc2 of heat transfer fluid and the third flow rate Qc3 of heat transfer fluid joining at the seventh connection point 57 to reform the first flow rate Qc1 of heat transfer fluid before returning to the second pump 22, - a fourth flow Qc4 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, in the first bypass branch 20C, in the third branch of branch 20E, in the fifth heat exchanger 5 where it gives off heat to the outside air flow Fe, in the third branch of branch 20E, in the second branch of branch 20D, in the primary loop 20A and returns to the first pump 21.

[0167] In this operating mode, the heat dissipated by the first element 41 of the electric powertrain of the vehicle, at the level of the fourth heat exchanger 4, is transferred to the refrigerant fluid at the level of the second and sixth heat exchangers 2, 6. The first element 41 of the electric powertrain of the vehicle is thus cooled.

[0168] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5.

[0169] Figure 3 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as cooling of the first element of the electric powertrain of the vehicle and heating of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, circulates in the secondary loop 20B, and divides at the level of the eighth connection point 58 in: -- a second flow Qc2 of heat transfer fluid circulating in the fourth bypass branch 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth bypass branch 20F, and joins the seventh connection point 57, -- a third flow Qc3 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, and reaches the seventh connection point 57, - the second flow rate Qc2 of heat transfer fluid and the third flow rate Qc3 of heat transfer fluid joining at the seventh connection point 57 to reform the first flow rate Qc1 of heat transfer fluid before returning to the second pump 22, - a fourth flow Qc4 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A and is divided at the first connection point 51 into: -- a fifth flow Qc5 of heat transfer fluid circulating in the first branch of bypass 20C, in the third branch of bypass 20E, in the fifth heat exchanger 5 where it gives off heat to the outside air flow Fe, in the third branch of bypass 20E, in the second branch of bypass 20D and joins the third connection point 53, -- a sixth flow Qc6 of heat transfer fluid circulating in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A and joins the third connection point 53, - the fifth flow rate Qc5 of heat transfer fluid and the sixth flow rate Qc6 of heat transfer fluid joining at the third connection point 53 to reform the fourth flow rate Qc4 of heat transfer fluid before returning to the first pump 21.

[0170] In this operating mode, the heat dissipated by the first element 41 of the vehicle's electric powertrain, at the level of the fourth heat exchanger 4, is transferred to the refrigerant fluid at the second and sixth heat exchangers 2, 6. The first element 41 of the electric powertrain of the vehicle is thus cooled.

[0171] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5 and by the inside air flow Fi at the third heat exchanger 3.

[0172] The indoor air flow Fi is thus heated at the third heat exchanger 3.

[0173] Figure 4 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as cooling of the first element of the electric powertrain of the vehicle and of the passenger compartment, operating in particular for an outside temperature above 20°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates in the secondary loop 20B and is divided at the eighth connection point 58 into: -- a second flow Qc2 of heat transfer fluid circulating in the fourth branch of bypass 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth branch of bypass 20F, in the fifth branch of bypass 20G, in the seventh heat exchanger 7 where it receives heat from the indoor air flow Fi, in the fifth branch 20G and joins the tenth connection point 60, -- a third flow Qc3 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, and joins the tenth connection point 60, - the second flow rate Qc2 of heat transfer fluid and the third flow rate Qc3 of heat transfer fluid joining at the tenth connection point 60 to reform the first flow rate Qc1 of heat transfer fluid, - a fourth flow Qc4 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, in the first bypass branch 20C, in the third bypass branch 20E, in the fifth heat exchanger 5 where it gives up heat to the outside air flow Fe, in the third bypass branch 20E, in the second bypass branch 20D, in the primary loop 20A and returns to the first pump 21.

[0174] In this operating mode, the interior air flow Fi is cooled at the seventh heat exchanger 7. The passenger compartment is thus cooled.

[0175] The heat dissipated by the first element 41 of the electric powertrain of the vehicle, at the level of the fourth heat exchanger 4, is transferred to the refrigerant fluid at the level of the second heat exchanger 2. The first element 41 of the electric powertrain of the vehicle is thus cooled.

[0176] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5.

[0177] The heat transfer fluid does not circulate in the third heat exchanger 3, which therefore does not heat the interior air flow Fi.

[0178] Figure 5 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment, operating in particular for an outside temperature between 0°C and 20°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates in the secondary loop 20B and is divided at the eighth connection point 58 into: -- a second flow Qc2 of heat transfer fluid circulating in the fourth branch of bypass 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives up heat to the refrigerant fluid, circulates in the fourth branch of bypass 20F, in the fifth branch of bypass 20G, in the seventh heat exchanger 7 where it receives heat from the interior air flow Fi, in the fifth branch of bypass 20G and joins the tenth connection point 60, -- a third flow Qc3 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, and joins the tenth connection point 60, - the second flow rate Qc2 of heat transfer fluid and the third flow rate Qc3 of heat transfer fluid joining at the tenth connection point 60 to reform the first flow rate Qc1 of heat transfer fluid, - a fourth flow Qc4 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A and is divided at the first connection point 51 into: -- a fifth flow Qc5 of heat transfer fluid circulating in the first branch of bypass 20C, in the third branch of bypass 20E, in the fifth heat exchanger 5 where it gives off heat to the outside air flow Fe, in the third branch of bypass 20E, in the second branch of bypass 20D and joins the third connection point 53, -- a sixth flow Qc6 of heat transfer fluid circulating in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A and joins the third connection point 53, - the fifth flow rate Qc5 of heat transfer fluid and the sixth flow rate Qc6 of heat transfer fluid joining at the third connection point 53 to reform the fourth flow rate Qc4 of heat transfer fluid before returning to the first pump 21.

[0179] In this operating mode, the indoor air flow Fi is cooled at the seventh heat exchanger 7 and is heated at the third heat exchanger 3. The indoor air flow Fi is thus dehumidified. The amount of heat supplied by the third heat exchanger 3 is greater than the amount of heat absorbed by the seventh heat exchanger 7, the air flow is thus heated.

[0180] The heat dissipated by the first element 41 of the electric powertrain of the vehicle, at the level of the fourth heat exchanger 4, is transferred to the refrigerant fluid at the level of the second heat exchanger 2. The first element 41 of the electric powertrain of the vehicle is thus cooled.

[0181] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5.

[0182] Figure 6 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and active cooling of the passenger compartment, operating in particular for an outside temperature between 20°C and 30°C, in which: - a flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, and returns to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, in the seventh bypass branch 20I, in the eighth heat exchanger 8 where it gives off heat to the outside air flow Fe, in the seventh bypass branch 20I, in the secondary loop 20B before returning to the second pump 22, - a second flow Qc2 of heat transfer fluid circulates successively in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it transfers heat to the refrigerant fluid, circulates in the secondary loop 20B, in the sixth bypass branch 20H, in the fifth bypass branch 20G, in the seventh heat exchanger 7 where it receives heat from the interior air flow Fi, in the fifth bypass branch 20G, in the secondary loop 20B before returning to the third pump 23, - a third flow Qc3 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, in the first bypass branch 20C, in the third bypass branch 20E, in the fifth heat exchanger 5 where it gives up heat to the outside air flow Fe, in the third bypass branch 20E, in the second bypass branch 20D, in the primary loop 20A and returns to the first pump 21.

[0183] In this operating mode, the indoor air flow Fi is cooled at the seventh heat exchanger 7.

[0184] The heat dissipated by the first element 41 of the vehicle's electric powertrain, at the fourth heat exchanger 4, is dissipated into the outside air flow Fe at the eighth heat exchanger 8. This is therefore so-called passive cooling.

[0185] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5.

[0186] The heat transfer fluid does not circulate in the third heat exchanger 3, which therefore does not heat the interior air flow Fi.

[0187] Figure 7 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment, operating in particular for an outside temperature between 0°C and 20°C, in which: - a flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, and returns to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, in the seventh bypass branch 20I, in the eighth heat exchanger 8 where it gives off heat to the outside air flow Fe, in the seventh bypass branch 20I, in the secondary loop 20B before returning to the second pump 22, - a second flow Qc2 of heat transfer fluid circulates successively in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, in the sixth branch of bypass 20H, in the fifth bypass branch 20G, into the seventh heat exchanger 7 where it receives heat from the indoor air flow Fi, into the fifth bypass branch 20G, into the secondary loop 20B before returning to the third pump 23, - a third flow Qc3 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A and is divided at the first connection point into: -- a fourth flow Qc4 of heat transfer fluid circulating in the first branch of bypass 20C, in the third branch of bypass 20E, in the fifth heat exchanger 5 where it gives off heat to the outside air flow Fe, in the third branch of bypass 20E, in the second branch of bypass 20D and joins the third connection point 53, -- a fifth flow Qc5 of heat transfer fluid circulating in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A and joins the third connection point 53, - the fourth flow rate Qc4 of heat transfer fluid and the fifth flow rate Qc5 of heat transfer fluid joining at the third connection point 53 to reform the third flow rate Qc3 of heat transfer fluid before returning to the first pump 21.

[0188] In this operating mode, the indoor air flow Fi is cooled at the seventh heat exchanger 7 and is heated at the third heat exchanger 3. The indoor air flow Fi is thus dehumidified. The amount of heat supplied by the third heat exchanger 3 is greater than the amount of heat absorbed by the seventh heat exchanger 7, the air flow is thus heated.

[0189] The heat dissipated by the first element 41 of the electric drive train of the vehicle, at the level of the fourth heat exchanger 4, is dissipated in the outside air flow Fe at the level of the eighth heat exchanger 8. This is so-called passive cooling.

[0190] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5.

[0191] Figure 8 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and heating and dehumidification of the passenger compartment, operating in particular for an outside temperature between 0°C and 20°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, in the seventh bypass branch 20I, in the eighth heat exchanger 8 where it gives off heat to the outside air flow Fe, in the seventh bypass branch 20I, in the secondary loop 20B before returning to the second pump 22, - a second flow Qc2 of heat transfer fluid circulates in the secondary loop 20B and is divided at the eighth connection point 58 into: -- a third flow Qc3 of heat transfer fluid circulating in the fourth branch of bypass 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth branch of bypass 20F, and joins the ninth connection point 59, -- a fourth flow Qc4 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, in the sixth bypass branch 20H, and joins the ninth connection point 59, - the third flow Qc3 of heat transfer fluid and the fourth flow Qc4 of heat transfer fluid joining at the ninth connection point 59 to reform the second flow Qc2 of heat transfer fluid, the second flow Qc2 of heat transfer fluid circulating in the fifth bypass branch 20G, in the seventh heat exchanger 7 where it receives heat from the interior air flow Fi, in the fifth bypass branch 20G and joins the secondary loop 20B, - a fifth flow Qc5 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A and is divided at the first connection point 51 into: -- a sixth flow Qc6 of heat transfer fluid circulating in the first branch of bypass 20C, in the third branch of bypass 20E, in the fifth heat exchanger 5 where it gives off heat to the outside air flow Fe, in the third branch of bypass 20E, in the second branch of bypass 20D and joins the third connection point 53, -- a seventh flow Qc7 of heat transfer fluid circulating in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A and joins the third connection point 53, - the sixth flow rate Qc6 of heat transfer fluid and the seventh flow rate Qc7 of heat transfer fluid joining at the third connection point 53 to reform the fifth flow rate Qc5 of heat transfer fluid before returning to the first pump 21.

[0192] In this operating mode, the indoor air flow Fi is cooled at the seventh heat exchanger 7 and is heated at the third heat exchanger 3. The indoor air flow Fi is thus dehumidified. The amount of heat supplied by the third heat exchanger 3 is greater than the amount of heat absorbed by the seventh heat exchanger 7, the air flow is thus heated. In this mode of operation, the heat transfer fluid circulates in the second and sixth heat exchangers 2, 6, which absorb heat from the heat transfer fluid and enable dehumidification of the indoor air flow Fi.

[0193] The heat dissipated by the first element 41 of the electric drive train of the vehicle, at the level of the fourth heat exchanger 4, is dissipated in the outside air flow Fe at the level of the eighth heat exchanger 8. This is so-called passive cooling.

[0194] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5.

[0195] Figure 9 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as passive cooling of the first element of the electric powertrain of the vehicle and cooling of the passenger compartment, operating in particular for an outside temperature above 30°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, in the seventh bypass branch 20I, in the eighth heat exchanger 8 where it gives off heat to the air flow outside Fe, in the seventh branch of derivation 20I, in the secondary loop 20B before returning to the second pump 22, - a second flow Qc2 of heat transfer fluid circulates in the secondary loop 20B and is divided at the eighth connection point 58 into: -- a third flow Qc3 of heat transfer fluid circulating in the fourth branch of bypass 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth branch of bypass 20F, and joins the ninth connection point 59, -- a fourth flow Qc4 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, in the sixth bypass branch 20H, and joins the ninth connection point 59, - the third flow Qc3 of heat transfer fluid and the fourth flow Qc4 of heat transfer fluid joining at the ninth connection point 59 to reform the second flow Qc2 of heat transfer fluid, the second flow Qc2 of heat transfer fluid circulating in the fifth bypass branch 20G, in the seventh heat exchanger 7 where it receives heat from the interior air flow Fi, in the fifth bypass branch 20G and joins the secondary loop 20B, - a fifth flow Qc5 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, in the first bypass branch 20C, in the third bypass branch 20E, in the fifth heat exchanger 5 where it gives up heat to the outside air flow Fe, in the third bypass branch 20E, in the second bypass branch 20D, in the primary loop 20A and returns to the first pump 21.

[0196] In this operating mode, the indoor air flow Fi is cooled at the seventh heat exchanger 7. In this mode, the heat transfer fluid circulates in the second and sixth heat exchangers 2, 6, which absorb heat from the heat transfer fluid and allow the indoor air flow Fi to be cooled.

[0197] The heat dissipated by the first element 41 of the vehicle's electric powertrain, at the fourth heat exchanger 4, is dissipated into the outside air flow Fe at the eighth heat exchanger 8. This is so-called passive cooling.

[0198] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated in the outside air flow Fe at the fifth heat exchanger 5.

[0199] The heat transfer fluid does not circulate in the third heat exchanger 3, which therefore does not heat the interior air flow Fi.

[0200] Figure 10 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as passive heating of the first element of the electric powertrain of the vehicle and heating of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A before returning to the first pump 21, - a second flow Qc2 of heat transfer fluid circulates successively in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, circulates in the secondary loop 20B, in the eighth bypass branch 20J, in the ninth heat exchanger 9, in the eighth bypass branch 20J, in the secondary loop 20B before joining the second pump 22, - a third flow Qc3 of heat transfer fluid circulates successively in the first branch of bypass 20C, in the third branch of bypass 20E, in the fifth heat exchanger 5 where it receives heat from the outside air flow Fe, in the third branch of bypass 20E, in the second branch of bypass 20D and is divided at the fourth connection point 54 into: -- a fourth flow Qc4 of heat transfer fluid circulating in the secondary loop 20B, in the fourth bypass branch 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth bypass branch 20F, in the secondary loop 20B, and joins the second connection point 52, -- a fifth flow Qc5 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, and reaches the second connection point 52, - the fourth flow rate Qc4 of heat transfer fluid and the fifth flow rate Qc5 of heat transfer fluid joining at the second connection point 52 to reform the third flow rate Qc3 of heat transfer fluid before returning to the fifth heat exchanger 5.

[0201] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated by the interior air flow Fi at the third heat exchanger 3, so as to heat the passenger compartment.

[0202] The heat dissipated by the second element 42 of the vehicle's electric powertrain, at the ninth heat exchanger 9, is transferred to the first element 41 of the vehicle's electric powertrain, at the fourth heat exchanger 4. In this way, the heat generated by the second element 42 of the electric powertrain of the vehicle makes it possible to heat the first element 41 of the electric powertrain of the vehicle.

[0203] In addition, the heat transfer fluid receives heat from the outside air flow Fe at the fifth heat exchanger 5. The evaporation of the refrigerant at the second and sixth heat exchangers 2, 6 is thus carried out by recovering the heat from the outside air flow Fe.

[0204] Figure 11 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as cooling of the first and second elements of the electric powertrain of the vehicle and heating of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A before returning to the first pump 21, - a second flow Qc2 of heat transfer fluid circulates in the secondary loop 20B and is divided into: -- a third flow Qc3 of heat transfer fluid circulating in the fourth branch of derivation 20F, in the fourth pump 24, in the sixth exchanger of heat 6 where it gives off heat to the refrigerant fluid, circulates in the fourth branch 20F and joins the seventh connection point 57, -- a fourth flow Qc4 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, and reaches the seventh connection point 57, - the third flow Qc3 of heat transfer fluid and the fourth flow Qc4 of heat transfer fluid joining at the seventh connection point 57 to reform the second flow Qc2 of heat transfer fluid, the second flow Qc2 of heat transfer fluid circulates in the secondary loop 20B and is divided into: -- a fifth flow Qc5 of heat transfer fluid circulating in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, and joining the fourteenth connection point 64, -- a sixth flow Qc6 of heat transfer fluid circulating in the eighth branch of bypass 20J, in the ninth heat exchanger 9, in the eighth branch of bypass 20J, and joins the fourteenth connection point 64, - the fifth flow rate Qc5 of heat transfer fluid and the sixth flow rate Qc6 of heat transfer fluid joining at the fourteenth connection point 64 to reform the second flow rate Qc2 of heat transfer fluid.

[0205] In this operating mode, the heat dissipated by the first element 41 and second element 42 of the electric powertrain of the vehicle, at the level of the fourth heat exchanger 4 and the ninth heat exchanger 9 respectively, is transferred to the refrigerant fluid at the level of the second and sixth heat exchangers 2, 6. The first element 41 and second element 42 of the electric powertrain of the vehicle are thus cooled.

[0206] The heat received by the heat transfer fluid at the first heat exchanger 1 is dissipated by the interior air flow Fi at the third heat exchanger 3. The interior air flow Fi is thus heated at the third heat exchanger 3, so as to heat the passenger compartment.

[0207] Figure 12 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode called heating of the first element of the electric powertrain of the vehicle, operating in particular for an outside temperature below 20°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, in the tenth bypass branch 20L, in the seventh bypass branch 20I, in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, in the ninth bypass branch 20K, in the primary loop 20A before returning to the first pump 21, - a second flow Qc2 of heat transfer fluid circulates successively in the first branch of bypass 20C, in the third branch of bypass 20E, in the fifth heat exchanger 5 where it receives heat from the outside air flow Fe, in the third branch of bypass 20E, in the second branch of bypass 20D and is divided at the fourth connection point 54 into: -- a third flow Qc3 of heat transfer fluid circulating in the secondary loop 20B, in the fourth bypass branch 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth bypass branch 20F, in the secondary loop 20B, and joins the second connection point 52, -- a fourth flow Qc4 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, and joins the second connection point 52, - the third flow rate Qc3 of heat transfer fluid and the fourth flow rate Qc4 of heat transfer fluid joining at the second connection point 52 to reform the second flow rate Qc2 of heat transfer fluid before returning to the fifth heat exchanger 5.

[0208] The heat received by the heat transfer fluid at the first heat exchanger 1 is transferred to the first element 41 of the electric powertrain of the vehicle, at the fourth heat exchanger 4, so as to heat the first element 41 of the electric powertrain of the vehicle.

[0209] In addition, the heat transfer fluid receives heat from the outside air flow Fe at the fifth heat exchanger 5. The evaporation of the refrigerant at the second and sixth heat exchangers 2, 6 is thus carried out by recovering the heat from the outside air flow Fe.

[0210] The heat transfer fluid does not circulate in the third heat exchanger 3, which therefore does not heat the interior air flow Fi.

[0211] Figure 13 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as heating of the first element of the electric powertrain of the vehicle and of the passenger compartment, operating in particular for an outside temperature below 0°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of fluid refrigerant joining to reform the first flow Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, and is divided into: -- a second flow Qc2 circulating in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A and joins the fifteenth connection point 65, -- a third flow Qc3 circulating in the tenth branch of bypass 20L, in the seventh branch of bypass 20I, in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, in the ninth branch of bypass 20K and joins the fifteenth connection point 65, - the second flow rate Qc2 of heat transfer fluid and the third flow rate Qc3 of heat transfer fluid joining at the fifteenth connection point 65 to reform the first flow rate Qc1 of heat transfer fluid, the first flow rate Qc1 of heat transfer fluid circulating in the primary loop 20A before returning to the first pump 21, - a fourth flow Qc4 of heat transfer fluid circulates successively in the first branch of bypass 20C, in the third branch of bypass 20E, in the fifth heat exchanger 5 where it receives heat from the outside air flow Fe, in the third branch of bypass 20E, in the second branch of bypass 20D and is divided at the fourth connection point 54 into: -- a fifth flow Qc5 of heat transfer fluid circulating in the secondary loop 20B, in the fourth bypass branch 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth bypass branch 20F, in the secondary loop 20B, and reaches the second connection point 52, -- a sixth flow Qc6 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, and joins the second connection point 52, - the fifth flow rate Qc5 of heat transfer fluid and the sixth flow rate Qc6 of heat transfer fluid joining at the second connection point 52 to reform the fourth flow rate Qc4 of heat transfer fluid before returning to the fifth heat exchanger 52.

[0212] The heat received by the heat transfer fluid at the first heat exchanger 1 is, on the one hand, dissipated by the interior air flow Fi at the third heat exchanger 3, so as to heat the passenger compartment, and, on the other hand, transferred to the first element 41 of the electric powertrain of the vehicle, at the fourth heat exchanger 4, so as to heat the first element 41 of the electric powertrain of the vehicle. In this way, the first heat exchanger 1 serves both to heat the passenger compartment and to heat the first element 41 of the electric powertrain of the vehicle.

[0213] In addition, the heat transfer fluid receives heat from the outside air flow Fe at the fifth heat exchanger 5. The evaporation of the refrigerant at the second and sixth heat exchangers 2, 6 is thus carried out by recovering the outside air flow Fe.

[0214] Figure 14 shows a diagram of a method of operation of a thermal conditioning system 100 as already described, in a mode known as cooling of the first element of the electric powertrain of the vehicle and heating of the second element of the electric powertrain of the vehicle, operating in particular for an outside temperature below 0°C, in which: - a first flow Qr1 of refrigerant fluid circulates in the compressor 15 where it passes at high pressure, and circulates successively in the first heat exchanger 1 where it gives off heat to the heat transfer fluid, is divided into: -- a second flow Qr2 of refrigerant fluid circulating in the first expansion device 31 where it passes at low pressure, in the second heat exchanger 2 where it absorbs heat from the heat transfer fluid, -- a third flow Qr3 of refrigerant fluid circulating in the second expansion device 32 where it passes at low pressure, in the sixth heat exchanger 6 where it absorbs heat from the heat transfer fluid, - the second flow rate Qr2 of refrigerant fluid and the third flow rate Qr3 of refrigerant fluid joining to reform the first flow rate Qr1 of refrigerant fluid before returning to the compression device 15, - a first flow Qc1 of heat transfer fluid circulates successively in the primary loop 20A, in the first pump 21, in the first heat exchanger 1 where it receives heat from the refrigerant fluid, in the primary loop 20A, and is divided into: -- a second flow Qc2 circulating in the primary loop 20A, in the third heat exchanger 3 where it gives off heat to the interior air flow Fi, in the primary loop 20A and joins the fifteenth connection point 65, -- a third flow Qc3 circulating in the tenth branch of bypass 20L, in the seventh branch of bypass 20I, in the secondary loop 20B, in the second pump 22, in the fourth heat exchanger 4, in the secondary loop 20B, in the ninth branch of bypass 20K and joins the fifteenth connection point 65, - the second flow rate Qc2 of heat transfer fluid and the third flow rate Qc3 of heat transfer fluid joining at the fifteenth connection point 65 to reform the first flow rate Qc1 of heat transfer fluid, the first flow rate Qc1 of heat transfer fluid circulating in the primary loop 20A before returning to the first pump 21, - a fourth flow Qc4 of heat transfer fluid circulates in the secondary loop 20B and is divided into: -- a fifth flow Qc5 of heat transfer fluid circulating in the fourth branch of bypass 20F, in the fourth pump 24, in the sixth heat exchanger 6 where it gives off heat to the refrigerant fluid, circulates in the fourth branch of bypass 20F and reaches the seventh connection point 57, -- a sixth flow Qc6 of heat transfer fluid circulating in the secondary loop 20B, in the third pump 23, in the second heat exchanger 2 where it gives off heat to the refrigerant fluid, circulates in the secondary loop 20B, and reaches the seventh connection point 57, - the fifth flow rate Qc5 of heat transfer fluid and the sixth flow rate Qc6 of heat transfer fluid joining at the seventh connection point 57 to reform the fourth flow rate Qc4 of heat transfer fluid, the fourth flow rate Qc4 of heat transfer fluid circulates in the secondary loop 20B, in the eighth bypass branch 20J, in the ninth heat exchanger 9, in the eighth bypass branch 20J and joins the secondary loop 20B.

[0215] The heat received by the heat transfer fluid at the first heat exchanger 1 is, on the one hand, dissipated by the interior air flow Fi at the third heat exchanger 3, so as to heat the passenger compartment, and, on the other hand, transferred to the first element 41 of the electric powertrain of the vehicle, at the fourth heat exchanger 4, so as to heat the first element 41 of the electric powertrain of the vehicle. In this way, the first heat exchanger 1 serves both to heat the passenger compartment and to heat the first element 41 of the electric powertrain of the vehicle.

[0216] The heat dissipated by the second element 42 of the electric powertrain of the vehicle, at the ninth heat exchanger 9, is transferred to the refrigerant fluid at the second and sixth heat exchangers 2, 6. The second element 42 of the electric powertrain of the vehicle is thus cooled.

Claims

Claims

1. Thermal conditioning system (100) for a motor vehicle, comprising: - a heat transfer fluid circuit (20), in particular a dielectric heat transfer fluid, comprising: -- a primary loop (20A) for circulating heat transfer fluid, -- a secondary loop (20B) for circulating heat transfer fluid, -- a first branch of derivation (20C), -- a second branch of derivation (20D), -- a third branch of derivation (20E), - a refrigerant fluid circuit (10) comprising a main refrigerant fluid circulation loop (10A), successively comprising, in a direction of circulation of the refrigerant fluid: - a compression device (15), - a first heat exchanger (1), arranged jointly on the main loop (10A) of refrigerant fluid and on the primary loop (20A) of heat transfer fluid so as to allow an exchange of heat between the refrigerant fluid and the heat transfer fluid, - a first relaxation device (31), - a second heat exchanger (2), arranged jointly on the main loop (10A) of refrigerant fluid and on the secondary loop (20B) of heat transfer fluid so as to allow an exchange of heat between the refrigerant fluid and the heat transfer fluid, in which: - the primary heat transfer fluid loop (20A) comprises a third heat exchanger (3) configured to exchange heat with an interior air flow (Fi) to a passenger compartment of the vehicle, and - the secondary loop (20B) of heat transfer fluid comprises a fourth heat exchanger (4) configured to be thermally coupled to a first element (41) of an electric powertrain of the vehicle, - the first branch branch (20C) connects a first connection point (51) arranged on the primary loop (20A) between the first heat exchanger (1) and the third heat exchanger (3) to a second connection point (52) arranged on the secondary loop (20B) between the second heat exchanger (2) and the fourth heat exchanger (4), - the second branch branch (20D) connecting a third connection point (53) arranged on the primary loop (20A) between the third heat exchanger (3) and the first heat exchanger (1) to a fourth connection point (54) arranged on the secondary loop (20B) between the fourth heat exchanger (4) and the second heat exchanger (2), - the third branch branch (20E) connecting a fifth connection point (55) arranged on the first branch branch (20C) to a sixth connection point (56) arranged on the second branch branch (20D), the third branch branch (20E) comprising a fifth heat exchanger (5), in which the fifth heat exchanger (5) is configured to exchange heat with an air flow (Fe) outside the passenger compartment of the vehicle, in which: the refrigerant circuit (10) comprises an auxiliary branch (10B) for circulating refrigerant fluid arranged in parallel with the first expansion device (31) and the second exchanger (2),the auxiliary branch (10B) successively comprising a second expansion device (32) and a sixth heat exchanger (6) arranged jointly on the auxiliary branch (10B) of refrigerant fluid and on a fourth bypass branch (20F) of heat transfer fluid so as to allow heat exchange between the refrigerant fluid and the heat transfer fluid, the fourth bypass branch (20F) being connected to the secondary loop (20B) in parallel with the first heat exchanger (1) between a seventh connection point (57) and an eighth connection point (58),the thermal conditioning system (100) being characterized in that the heat transfer fluid circuit (20) comprises a fifth bypass branch (20G) connecting a ninth connection point (59) arranged on the fourth bypass branch (20F) between the sixth heat exchanger (6) and the seventh connection point (57) to a tenth connection point (60) arranged on the secondary loop (20B) between the fourth heat exchanger (4) and the eighth connection point (58), the fifth bypass branch (20G) comprising a, seventh heat exchanger (7) configured to exchange heat with the interior air flow (Fi) in the vehicle passenger compartment.

2. Thermal conditioning system (100) according to claim 1, wherein the heat transfer fluid circuit (20) comprises: - a sixth branch branch (20H) connecting an eleventh connection point (61) arranged on the secondary loop (20B) between the second heat exchanger (2) and the second connection point (52) to the fourth bypass branch (20F), - a seventh branch branch (20I) connecting a twelfth connection point (62) arranged on the secondary loop (20B) between the seventh connection point (57) and the fourth heat exchanger (4) at a thirteenth connection point (63) arranged on the secondary loop (20B) between the fourth heat exchanger (4) and the tenth connection point (60), the seventh branch branch (20I) comprising an eighth heat exchanger (8), in which the eighth heat exchanger (8) is configured to exchange heat with an external air flow (Fe) to the passenger compartment of the vehicle.

3. Thermal conditioning system (100) according to any one of the preceding claims, in which the heat transfer fluid circuit (20) comprises an eighth bypass branch (20J) connected to the secondary loop (20B) in parallel with the fourth heat exchanger (4), the eighth bypass branch (20J) comprising a ninth heat exchanger (9) configured to be thermally coupled to a second element (42) of the electric powertrain of the vehicle.

4. Thermal conditioning system (100) according to any one of the preceding claims, in which the heat transfer fluid circuit (20) comprises: - a ninth branch branch (20K) connecting a fourteenth connection point (64) arranged on the secondary loop (20B) between the fourth heat exchanger (4) and the thirteenth connection point (63) to a fifteenth point (65) arranged on the primary loop (20A) between the third heat exchanger (3) and the third connection point (53), - a tenth branch branch (20L) connecting the primary loop (20A) to a sixteenth connection point (66) arranged on the seventh branch branch (20I). [Claim s] A thermal conditioning system (100) according to any preceding claim, wherein: - the primary loop (20A) of the heat transfer fluid circuit (20) comprises a first circulation pump (21), in particular arranged between the third connection point (53) and the first heat exchanger (1), - the secondary loop (20B) of the heat transfer fluid circuit (20) comprises a second circulation pump (22), in particular arranged between the seventh connection point (57) and the fourth heat exchanger (4), - the secondary loop (20B) of the heat transfer fluid circuit (20) comprises a third circulation pump (23), in particular arranged between the fourth connection point (54) and the second heat exchanger (2), - the fourth branch branch (20F) of the heat transfer fluid circuit (20) comprises a fourth circulation pump (24), in particular arranged between the eighth connection point (58) and the sixth heat exchanger (6).

6. Thermal conditioning system (100) according to any one of the preceding claims, in which the heat transfer fluid circuit (20) comprises: - a first three-way valve (26) arranged jointly on the secondary loop (20B) and on the fourth bypass branch (20F), - a second three-way valve (27) arranged jointly on the secondary loop (20B) and on the first bypass branch (20C), - a third three-way valve (28) arranged jointly on the first bypass branch (20C) and on the third bypass branch (20E), - a fourth three-way valve (29) arranged jointly on the second bypass branch (20D) and on the third bypass branch (20E).

7. Thermal conditioning system (100) according to any one of claims 2 to 6, in which the heat transfer fluid circuit (20) comprises a fifth three-way valve (30) arranged jointly on the secondary loop (20B) and on the seventh bypass branch (20I).

8. Thermal conditioning system (100) according to one of claims 2 to 7, in which the heat transfer fluid circuit (20) comprises a first four-way valve (71) jointly arranged on the fourth bypass branch (20F), on the fifth bypass branch (20G) and on the sixth bypass branch (20H).

9. Thermal conditioning system (100) according to one of claims 3 to 8, in which the heat transfer fluid circuit (20) comprises a second four-way valve (72) jointly arranged on the secondary loop (20B), on the seventh bypass branch (20I) and on the eighth bypass branch (20J).

10. Thermal conditioning system (100) according to any one of claims 4 to 9, in which the heat transfer fluid circuit (20) comprises: - a third four-way valve (73) arranged jointly on the secondary loop (20B), on the eighth bypass branch (20J) and on the ninth bypass branch (20K), - a fourth four-way valve (74) arranged jointly on the primary loop (20A), on the first bypass branch (20C) and on the tenth bypass branch (20L).

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