MODULAR MANAGEMENT DEVICE FOR A VEHICLE HEATING / COOLING SYSTEM

Abstract

A management device (DG) equips a heating / cooling installation (IV) of a vehicle comprising a first circuit (CF1) in which a first low-temperature heat transfer fluid circulates and a second circuit (CF2) in which a second very low-temperature heat transfer fluid circulates. This management device (DG) comprises a main module (MP) comprising: - first (PE1) and second (PE2) electric pumps circulating the first and second heat transfer fluids, - a first valve (V1) having first and second inlet ports receiving the first heat transfer fluid, third and fourth inlet ports receiving the second heat transfer fluid, and first and second outlet ports delivering the first and second heat transfer fluids to the first (PE1) and second (PE2) pumps, and - conduits interconnecting the circuits (CF1, CF2) to the inlet ports and to the first (PE1) and second (PE2) pumps. Figure 1

Description

Title of the invention: MODULAR MANAGEMENT DEVICE FOR A VEHICLE HEATING / COOLING INSTALLATION Technical field of the invention

[0001] The invention relates to vehicles comprising a heating / cooling installation responsible for heating / cooling equipment and / or the air in the passenger compartment, and more specifically to the devices responsible for managing the circulation of heat-transfer fluids in such installations. State of the art

[0002] Certain vehicles, possibly land-based (and for example of the automobile type), comprise a heating / cooling installation comprising at least two circuits in which heat transfer fluids having different temperatures (for example a low temperature and a very low temperature) circulate. Such circuits are responsible for heating / cooling the air in the passenger compartment of the vehicle and equipment (such as for example an electric or thermal motor, a converter, and a main battery (supplying electrical energy to this electric motor and this converter).

[0003] These heating / cooling installations include a management device which is responsible for managing the circulation of heat transfer fluids. Currently, a specific management device is defined for each heating / cooling installation, which is time-consuming, expensive and poses inventory management problems. As an illustrative example, within the same group of vehicle manufacturers it is not uncommon to market vehicle models having more than fifteen specific management devices due to the type of powertrain (or GMP) used, and / or the heat transfer fluids used, and / or the use of a direct or indirect heat pump or the absence of a heat pump.

[0004] The invention therefore aims in particular to improve the situation. Presentation of the invention

[0005] For this purpose, it proposes in particular a management device intended to equip a heating / cooling installation of a vehicle comprising at least a first circuit in at least one part of which circulates a first heat transfer fluid at low temperature and a second circuit in at least one part of which circulates a second heat transfer fluid at very low temperature.

[0006] This management device is characterized by the fact that it comprises a main module comprising:

[0007] - first and second electric pumps suitable for circulating respectively tively the first and second heat transfer fluids,

[0008] - a first valve having first and second inlet ports specific to receiving the first heat transfer fluid, third and fourth inlet ports suitable for receiving the second heat transfer fluid, and first and second outlet ports suitable for delivering the first and second heat transfer fluids respectively to the first and second pumps, and

[0009] - conduits suitable for interconnecting the circuits to the input channels respectively and to the first and second pumps.

[0010] By using a main module as a basic module for its various embodiments, it is now possible to reduce the duration of the design phases of management devices, make them less expensive and facilitate stock management.

[0011] The management device according to the invention may include other characteristics which may be taken separately or in combination, and in particular:

[0012] - its main module may include a second valve having a fifth inlet port coupled to the first outlet port, a sixth inlet port coupled to the first circuit via at least one other conduit and a third outlet port coupled to the first pump;

[0013] - in the presence of the first option, the main module may include a third valve having a seventh inlet port suitable for being coupled to the first circuit via another conduit, an eighth inlet port coupled to the second outlet port, a fourth outlet port coupled to the sixth inlet port of the second valve, and a fifth outlet port coupled to the second pump;

[0014] - its main module may include a fourth valve having a ninth way input suitable for being coupled to the second circuit to participate in heating a piece of equipment of the vehicle, a sixth output channel coupled to the fourth input channel, and a seventh output channel coupled to the second circuit via yet another conduit;

[0015] - in the presence of the last option, it can include a first auxiliary module comprising, on the one hand, a non-return valve coupled to the seventh outlet port, on the other hand, a third electric pump suitable for circulating the second heat transfer fluid from the non-return valve for the purpose of heating it by a first heating device forming part of the second circuit, on the other hand, a fifth valve having a tenth inlet port coupled to the non-return valve, an eighth outlet port suitable for being coupled to the equipment for heating it, and a ninth outlet port coupled to the third pump, and, on the other hand, first auxiliary conduits suitable for interconnecting the valve respectively non-return to the seventh outlet, the third pump to the first heater, and the eighth outlet to the equipment;

[0016] - it can comprise a second auxiliary module comprising, on the one hand, a fourth electric pump suitable for circulating the second heat transfer fluid after heating by a second electric heating device forming part of a third circuit of the heating / cooling installation and suitable for being coupled to the first circuit, on the one hand, a sixth valve having an eleventh inlet port suitable for being coupled to the second electric heating device to receive the second heat transfer fluid, a twelfth inlet port suitable for being coupled to the first circuit to receive the first heat transfer fluid, a thirteenth inlet port suitable for being coupled to the third circuit to receive the second heat transfer fluid placed at high temperature, and tenth, eleventh and twelfth outlet ports suitable for being coupled respectively to the second circuit, first circuit and to the fourth pump to supply it with second heat transfer fluid at high temperature, and, on the other hand,second auxiliary conduits suitable for interconnecting respectively the sixth valve to the first, second and third circuits and the fourth pump to the third circuit;

[0017] - in the presence of the last option, it can include a third module auxiliary pipe suitable for defining an interface between the third circuit and a fourth circuit of the heating / cooling installation dedicated to cooling a passenger compartment of the vehicle, and comprising, on the one hand, a fifth electric pump suitable for circulating a third heat transfer fluid, on the other hand, a seventh valve having a fourteenth inlet port suitable for being coupled to a cooling device of the fourth circuit, a fifteenth inlet port coupled to a reservoir of third heat transfer fluid, and a thirteenth outlet port coupled to the fifth pump, and, on the other hand, third auxiliary pipes suitable for interconnecting respectively the cooling device to the thirteenth inlet port, the fifth pump to another cooling device of the fourth circuit, and the other cooling device to the cooling device.

[0018] The invention also proposes a heating / cooling installation suitable for equipping a vehicle and comprising, on the one hand, at least a first circuit in at least one part of which circulates a first low-temperature heat transfer fluid and a second circuit in at least one part of which circulates a second very low-temperature heat transfer fluid, and on the other hand, a management device of the type presented above.

[0019] The invention also provides a vehicle, possibly of the automobile type, and comprising a heating / cooling installation of the type presented. above. Brief description of the figures

[0020] Other characteristics and advantages of the invention will appear on examining the detailed description below, and the appended drawings, in which:

[0021] [Fig.l] schematically and functionally illustrates a first exemplary embodiment of a heating / cooling installation intended to equip a vehicle and comprising a first exemplary embodiment of a management device according to the invention,

[0022] [Fig.2] schematically and functionally illustrates a second exemplary embodiment of a heating / cooling installation intended to equip a vehicle and comprising a second exemplary embodiment of a management device according to the invention,

[0023] [Fig.3] schematically and functionally illustrates a third exemplary embodiment of a heating / cooling installation intended to equip a vehicle and comprising a third exemplary embodiment of a management device according to the invention, and

[0024] [Fig.4] schematically and functionally illustrates a fourth exemplary embodiment of a heating / cooling installation intended to equip a vehicle and comprising a fourth exemplary embodiment of a management device according to the invention. Detailed description of the invention

[0025] The invention aims in particular to propose a modular DG management device intended to form part of a heating / cooling installation IV of a vehicle.

[0026] In the following, it is considered, by way of non-limiting example, that the vehicle is of the automobile type. This is for example a car. But the invention is not limited to this type of vehicle. It in fact concerns any type of vehicle (land, sea (or river) or air) which must include a heating / cooling installation with at least two heat transfer fluid circuits.

[0027] Furthermore, it is considered in the following, by way of non-limiting example, that the vehicles comprise a transmission chain with an all-electric powertrain (or GMP). But the GMPs of the vehicles can be of any type, and in particular purely thermal or hybrid (thermal and electric).

[0028] Furthermore, it is considered in the following, by way of non-limiting example, that each electric GMP comprises two electric motors MM1 and MM2 associated with a main (or “traction” or even “power”) EV rechargeable battery and capable of providing engine torques for the wheels respectively front and rear drive units. But the electric powertrain could only include a single electric drive unit.

[0029] Figures 1 to 4 schematically show four exemplary embodiments of heating / cooling installations IV intended to equip vehicles (not illustrated) and comprising respectively four exemplary embodiments of management devices DG according to the invention.

[0030] As illustrated in Figures 1 to 4, each heating / cooling installation IV comprises a management device DG according to the invention and at least a first circuit CFI, in at least one part of which a first low-temperature heat transfer fluid circulates, and a second circuit CF2, in at least one part of which a second very low-temperature heat transfer fluid circulates. It will be noted that the first and second heat transfer fluids may be identical.

[0031] For example, the first CFI circuit may be intended at least to cool the two electric motors MM1 and MM2 of the GMP and a charging module MR. It will be noted that the latter (MR) may, for example, be a dual integrated charging module comprising a battery charger, a direct current / direct current converter and an inverter. As illustrated non-limitingly, this first CFI circuit may also comprise a cooling radiator RR, for example intended to be installed in the front end of the vehicle.

[0032] Also for example, the second circuit CF2 may be intended at least to cool the EV equipment which is the main battery associated here with the two electric motor machines MM1 and MM2. As illustrated non-limitingly, this second circuit CF2 may also comprise a first cooling device DR1 and a first electric cooling and heating device DRC1 supplying power to the first cooling device DR1.

[0033] As illustrated in Figures 1 to 4, a management device DG, according to the invention, comprises at least one main module MP comprising at least first PE1 and second PE2 electric pumps, a first valve VI of the six-way type (four inlet ways and two outlet ways), and (main) conduits Cj.

[0034] The first (electric) pump PE1 is suitable for circulating the first heat transfer fluid (at low temperature). The second (electric) pump PE2 is suitable for circulating the second heat transfer fluid (at very low temperature).

[0035] The first valve Via first and second inlet ports which are suitable for receiving the first heat transfer fluid, third and fourth inlet ports which are suitable for receiving the second heat transfer fluid, and first and second outlet ports which are suitable for delivering the first and second heat transfer fluids respectively to the first PE1 and second PE2 pumps.

[0036] The main conduits Cj are suitable for interconnecting respectively the first CFI and second CF2 circuits to the input channels and to the first PE1 and second PE2 pumps.

[0037] For example, and as illustrated non-limitingly in Figures 1 to 4:

[0038] - a first main conduit Cl (j = 1) can interconnect the first circuit CFI and the first input channel of the first valve VI (it then starts at an input referenced B of the main module MP),

[0039] - a second main conduit C2 (j = 2) can interconnect the first circuit CFI and the second input channel of the first valve VI (it then starts at an input referenced C of the main module MP),

[0040] - a third main conduit C3 (j = 3) can interconnect the second circuit CF2 (at the output of the EV equipment (here the main battery)) and the third input channel of the first valve VI (it then starts at an input referenced H of the main module MP),

[0041] - a fourth main conduit C4 (j = 4) can interconnect the second circuit CF2 (at the output of the first cooling device DR1 and the fourth input channel of the first valve VI (it then starts at an input referenced G of the main module MP),

[0042] - a fifth main conduit C5 (j = 5) can interconnect the output of the first pump PE1 and the first output channel of the first valve V1 (it then opens onto an output referenced A of the main module MP), and

[0043] - a sixth main conduit C6 (j = 6) can interconnect the output of the second pump PE2 and the second output channel of the first valve V1 (it then opens onto an output referenced E of the main module MP).

[0044] It will be understood that the main module MP is the only module that is essential to the DG management device and therefore which is part of each of its variant embodiments (notably illustrated in Figures 2 to 4). For example, and as illustrated in [Fig.l], when the DG management device only comprises the main module MP, it can be adapted to a heating / cooling installation architecture IV that the person skilled in the art calls a “direct heat pump” and which can manage the circulation of heat transfer fluids such as carbon dioxide (CO2) or a HydroFluoro-Olefin (or HFO), such as for example R-1234YF.

[0045] Therefore, the main module MP can be used as a basic module, which makes it possible to reduce the duration of the design phases of the DG management devices, to make them less expensive and to facilitate stock management.

[0046] For example, and as illustrated non-limitingly in Figures 1 to 4, the main module MP can also comprise a second valve V2 of the three-way type (two fifth and sixth inlet ways and a third outlet way). The fifth inlet way of the second valve V2 is here coupled to the first outlet way of the first valve VI. The sixth inlet port of the second valve V2 is here coupled to the first CFI circuit via at least one other (seventh) conduit C7 (j = 7) which here begins at an inlet referenced D of the main module MP (which is here coupled to a first RFI fluid reservoir of the first CFI circuit). The third outlet port of the second valve V2 is here coupled to the inlet of the first pump PE1 in order to supply it with the first heat transfer fluid.

[0047] Also for example, and as illustrated non-limitingly in Figures 1 to 4, the main module MP can also comprise a third valve V3 of the four-way type (two seventh and eighth inlet ways and two fourth and fifth outlet ways). The seventh inlet way of the third valve V3 is here suitable for being coupled to the first circuit CFI via the seventh conduit C7 (j = 7), which begins here at the inlet D of the main module MP. The eighth inlet way is here coupled to the second outlet way of the first valve VL. The fourth outlet way is here coupled to the sixth inlet way of the second valve V2. The fifth outlet way is here coupled to the second pump PE2 to supply it with first or second heat transfer fluid.

[0048] Also for example, and as illustrated non-limitingly in Figures 1 to 4, the main module MP can also comprise a fourth valve V4 of the three-way type (a ninth inlet port and two sixth and seventh outlet ports). The ninth inlet port is here suitable for being coupled to the second circuit CF2 to participate in the heating of the EV equipment (here the main battery). The sixth outlet port is here coupled to the fourth inlet port of the first valve VI to supply it with heat transfer fluid from the second circuit CF2 via the fourth conduit C4. The seventh outlet port is here coupled to the second circuit CF2 via yet another (eighth) conduit C8 (j = 8), which opens onto an outlet referenced G of the main module MP (coupled to the second circuit CF2).

[0049] For example, and as illustrated non-limitingly in [Fig.2], the management device DG can also comprise a first auxiliary module MAI in addition to its main module MP. This first auxiliary module MAI comprises a non-return valve CAR, a third electric pump PE3, a fifth valve V5, and first auxiliary conduits CAlk.

[0050] The non-return valve CAR is here coupled to the seventh outlet channel of the fourth valve V4 (via a first auxiliary conduit CAI 1 (k = 1)).

[0051] The third pump PE3 is capable of circulating the second heat transfer fluid coming from the non-return valve CAR so that it is heated by a first heating device DC1 which is part of the second circuit CF2.

[0052] It will be noted that in the example illustrated non-limitingly in [Fig.2], the second heat transfer fluid from the third pump PE3 first passes through a first cooling and heating device DRC1 of the second circuit CF2 before joining the first heating device DC1.

[0053] The fifth valve V5 is of the three-way type (a tenth inlet way and two eighth and ninth outlet ways).

[0054] The tenth inlet port of the fifth valve V5 is here coupled to the non-return valve CAR.

[0055] The eighth output channel of the fifth valve V5 is here suitable for being coupled to the EV equipment (here the main battery) to heat it.

[0056] The ninth output channel of the fifth valve V5 is here coupled to the input of the third pump PE3.

[0057] The first auxiliary conduits CAlk are suitable for interconnecting respectively the non-return valve CAR to the seventh outlet channel (CAI 1 ), the third pump PE3 to the first heating device DC1 (third first auxiliary conduit CA13), and the eighth outlet channel to the equipment EV (second first auxiliary conduit CA12).

[0058] This second embodiment of the management device DG, which combines the main module MP and the first auxiliary module MAI, is well suited to a heating / cooling installation architecture IV that the person skilled in the art calls "without heat pump" and which can manage the circulation of heat transfer fluids such as carbon dioxide (CO2) or a HydroFluoro-Olefin (or HFO), such as for example R-1234YF. This can in particular make it possible to heat the passenger compartment of the vehicle in the absence of a heat pump in its heating / cooling installation IV.

[0059] Also for example, and as illustrated non-limitingly in Figures 3 and 4, the management device DG can also comprise a second auxiliary module MA2 in place of the first auxiliary module MAI and in addition to its main module MP. This second auxiliary module MA2 comprises a fourth electric pump PE4, a sixth valve V6, and second auxiliary conduits CA2n.

[0060] The fourth pump PE4 is capable of circulating the second heat transfer fluid, after heating by a second electric heating device (or air heater) DC2 which is part of a third circuit CF3 of the heating / cooling installation IV and which is capable of being coupled to the first circuit CFI.

[0061] The sixth valve V6 is of the six-way type (three eleventh, twelfth and thirteenth inlet ways and three tenth, eleventh and twelfth outlet ways).

[0062] The eleventh inlet port of the sixth valve V6 is suitable for being coupled to the second electric heating device DC2 to receive the second heat transfer fluid.

[0063] The twelfth inlet port of the sixth valve V6 is suitable for being coupled to the first CFI circuit to receive the first heat transfer fluid.

[0064] The thirteenth inlet channel of the sixth valve V6 is suitable for being coupled to the third circuit CF3 to receive the second heat transfer fluid placed at high temperature.

[0065] The tenth, eleventh and twelfth output channels of the sixth valve V6 are suitable for being coupled respectively to the second circuit CF2, first circuit CFI and to the fourth pump PE4 to supply it with a second high-temperature heat transfer fluid.

[0066] The second auxiliary conduits CA2n are suitable for interconnecting respectively the sixth valve V6 to the first CFI, second CF2 and third CF3 circuits and the fourth pump PE4 to the fourth circuit CF4. More precisely:

[0067] - a first second auxiliary conduit CA21 (n = 1) is suitable for interconnecting the sixth valve V6 to the second circuit CF2 (it starts here at an input referenced N of the second auxiliary module MA2),

[0068] - a second second auxiliary conduit CA22 (n = 2) is suitable for interconnecting the sixth valve V6 to the first CFI circuit (it starts here at an input referenced J of the second auxiliary module MA2),

[0069] - a third second auxiliary conduit CA23 (n = 3) is suitable for interconnecting the sixth valve V6 to the third circuit CF3 (it starts here at an input referenced L of the second auxiliary module MA2),

[0070] - a fourth second auxiliary conduit CA24 (n = 4) is suitable for interconnecting the output of the fourth pump PE4 to the third circuit CF3 to supply a condenser CD of the latter (CF3) (here it leads to an output referenced K of the second auxiliary module MA2),

[0071] - a fifth second auxiliary conduit CA25 (n = 5) is suitable for interconnecting an output path from the sixth valve V6 to the second circuit CF2 to supply the first cooling device DR1 (here it leads to an output referenced M of the second auxiliary module MA2),

[0072] - a possible sixth second auxiliary conduit CA26 (n = 6) is suitable for inter connect an output channel of the sixth valve V6 to the first CFI circuit to supply the cooling radiator RR (here it leads to an output referenced I of the second auxiliary module MA2 - see [Fig.4]).

[0073] The second auxiliary module MA2 is therefore here responsible for distributing the calories from the condenser CD according to the thermal needs of the other components of the third CF3 or first CFI circuit (and more precisely towards the second electric heating device (or air heater) DC2 to heat the passenger compartment of the vehicle or towards the cooling radiator RR in the absence of need).

[0074] This third embodiment of the management device DG, which combines the main module MP and the second auxiliary module MA2, is well suited to a heating / cooling installation architecture IV that those skilled in the art call “heat pump”. indirect heat” and which can manage the circulation of heat transfer fluids such as carbon dioxide (CO2) or a HydroFluoro-Olefin (or HFO), such as R-1234YF.

[0075] Also for example, and as illustrated non-limitingly in [Fig.4], the management device DG can also comprise a third auxiliary module MA3 in place of the first auxiliary module MAI and in addition to its main module MP and its second auxiliary module MA2. This third auxiliary module MA3 is capable of defining an interface between the third circuit CF3 and a fourth circuit CF4 of the heating / cooling installation IV, dedicated to cooling the passenger compartment of the vehicle.

[0076] Furthermore, this third auxiliary module MA3 comprises a fifth electric pump PE5, a seventh valve V7, and third auxiliary conduits (not referenced in [Fig.4] so as not to overload it with references).

[0077] The fifth pump PE5 is capable of circulating a third heat transfer fluid, for example propane.

[0078] The seventh valve V7 is of the three-way type (two fourteenth and fifteenth inlet ways and one thirteenth outlet way).

[0079] The fourteenth input channel of the seventh valve V7 is here suitable for being coupled to a second cooling device DR2 of the fourth circuit CF4 (dedicated to the passenger compartment of the vehicle).

[0080] The fifteenth inlet port of the seventh valve V7 is here coupled to a second reservoir RF2 storing the third heat transfer fluid.

[0081] The thirteenth output channel of the seventh valve V7 is here coupled to the fifth pump PE5.

[0082] The third auxiliary conduits are suitable for interconnecting respectively the second cooling device DR2 to the thirteenth inlet channel, the fifth pump PE5 to a third cooling device DR3 of the fourth circuit CF4, and the third cooling device DR3 to the second cooling device DR2.

[0083] Here, the fourth circuit CF4 comprises not only the second DR2 and third DR3 cooling devices, but also the condenser CD, a compressor CP (powering the condenser CD), and an accumulator AC (powering the compressor CP).

[0084] The third auxiliary module MA3 is therefore specific to propane and interfaces with the fourth circuit CF4 (or cooling loop) ensuring the cooling of the vehicle's passenger compartment.

[0085] This fourth embodiment of the DG management device, which combines the main module MP and the second MA2 and third MA3 auxiliary modules, is well suited to a heating / cooling installation architecture IV that those skilled in the art call "indirect and integral heat pump" and which can manage the circulation of heat transfer fluids such as carbon dioxide (CO2) or a Hydro-Fluoro-Olefin (or HFO), such as for example R-1234YF, and propane.

[0086] Thanks to the different combinations of at least one auxiliary module MAI, MA2 or MA3, with the main module MP, or to the use of the main module MP alone, numerous management devices DG can be defined to be adapted respectively to numerous heating / cooling installation architectures IV. Typically, at least seven different architectures can be addressed. It will be noted that other combinations of the main module MP with at least one of the auxiliary modules MAI, MA2 and MA3, than those illustrated in Figures 2 to 4, can be made.

[0087] It will also be noted that the selective placement of each valve Vm (here m = 1 to 7) in one of its operating positions can be supervised by a computer (not shown) of the heating / cooling installation IV.

Claims

Claims

1. Management device (DG) for a heating / cooling installation (IV) of a vehicle comprising at least a first circuit (CFI) in at least one part of which circulates a first low-temperature heat transfer fluid and a second circuit (CF2) in at least one part of which circulates a second very low-temperature heat transfer fluid, characterized in that it comprises a main module (MP) comprising i) first (PE1) and second (PE2) electric pumps suitable for circulating said first and second heat transfer fluids respectively, ii) a first valve (VI) having first and second inlet ports suitable for receiving said first heat transfer fluid, third and fourth inlet ports suitable for receiving said second heat transfer fluid, and first and second outlet ports suitable for delivering said first and second heat transfer fluids respectively to said first (PE1) and second (PE2) pumps,and iii) conduits (Cj) suitable for interconnecting respectively said circuits (CFI, CF2) to said inlet channels and to said first (PE1) and second (PE2) pumps.,

2. Device according to claim 1, characterized in that said main module (MP) comprises a second valve (V2) having a fifth inlet port coupled to said first outlet port, a sixth inlet port coupled to said first circuit (CFI) via at least one other conduit (Cj) and a third outlet port coupled to said first pump (PE1).

3. Device according to claim 2, characterized in that said main module (MP) comprises a third valve (V3) having a seventh inlet port suitable for being coupled to said first circuit (CFI) via another conduit (Cj), an eighth inlet port coupled to said second outlet port, a fourth outlet port coupled to said sixth inlet port of said second valve (V2), and a fifth outlet port coupled to said second pump (PE2).

4. Device according to one of claims 1 to 3, characterized in that said main module (MP) comprises a fourth valve (V4) having a ninth input channel suitable for being coupled to said second circuit (CF2) to participate in heating equipment (EV) of said vehicle, a sixth output channel coupled to said fourth input channel, and a seventh output channel coupled to said second circuit. (CF2) via yet another conduit (Cj).

5. Device according to claim 4, characterized in that it comprises a first auxiliary module (MAI) comprising i) a non-return valve (CAR) coupled to said seventh outlet port, ii) a third electric pump (PE3) suitable for circulating said second heat transfer fluid from said non-return valve (CAR) for the purpose of heating it by a first heating device (DC1) forming part of said second circuit (CF2), iii) a fifth valve (V5) having a tenth inlet port coupled to said non-return valve (CAR), an eighth outlet port suitable for being coupled to said equipment for heating it, and a ninth outlet port coupled to said third pump (PE3), and iv) first auxiliary conduits (CAlk) suitable for interconnecting respectively said non-return valve (CAR) to said seventh outlet port, said third pump (PE3) to said first heating device (DC1), and said eighth outlet port to said equipment (EV).

6. Device according to one of claims 1 to 5, characterized in that it comprises a second auxiliary module (MA2) comprising i) a fourth electric pump (PE4) suitable for circulating said second heat transfer fluid after heating by a second electric heating device (DC2) forming part of a third circuit (CF3) of said heating / cooling installation (IV) and suitable for being coupled to said first circuit (CFI), ii) a sixth valve (V6) having an eleventh inlet port suitable for being coupled to said second electric heating device (DC2) to receive said second heat transfer fluid, a twelfth inlet port suitable for being coupled to said first circuit (CFI) to receive said first heat transfer fluid, a thirteenth inlet port suitable for being coupled to said third circuit (CF3) to receive said second heat transfer fluid placed at high temperature, and tenths,eleventh and twelfth output channels suitable for being coupled respectively to said second circuit (CF2), first circuit (CFI) and to said fourth pump (PE4) to supply it with second high-temperature heat transfer fluid, and iii) second auxiliary conduits (CA2n) suitable for interconnecting respectively said sixth valve (V6) to said first (CFI), second (CF2) and third (CF3) circuits and said fourth pump (PE4) to said third circuit (CF3).,

7. Device according to claim 6, characterized in that it comprises a third auxiliary module (MA3) capable of defining an interface between said third circuit (CF3) and a fourth circuit (CF4) of said heating / cooling installation (IV) dedicated to the cooling of a passenger compartment of said vehicle, and comprising i) a fifth electric pump (PE5) capable of circulating a third heat transfer fluid, ii) a seventh valve (V7) having a fourteenth inlet port capable of being coupled to a cooling device (DR2) of said fourth circuit (CF4), a fifteenth inlet port coupled to a third heat transfer fluid reservoir, and a thirteenth outlet port coupled to said fifth pump (PE5), and iii) third auxiliary conduits capable of interconnecting respectively said cooling device (DR1) to said thirteenth inlet port, said fifth pump (PE5) to another cooling device (DR3) of said fourth circuit (CF4),and said other cooling device (DR3) to said cooling device (DR2).,

8. Heating / cooling installation (IV) suitable for equipping a vehicle and comprising at least a first circuit (CFI) in at least one part of which a first low-temperature heat transfer fluid circulates and a second circuit (CF2) in at least one part of which a second very low-temperature heat transfer fluid circulates, characterized in that it further comprises a management device (DG) according to one of claims 1 to 7.

9. Vehicle, characterized in that it comprises a heating / cooling installation (IV) according to claim 8.

10. Vehicle according to claim 9, characterized in that it is of the automobile type.

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