Vehicle thermal management circuit

Abstract

The present disclosure relates to a thermal conditioning device for a cab and / or at least one component of a vehicle, the device comprising a circulating heat transfer line (100) of a heat transfer fluid and a circulating refrigeration line (200) of a refrigeration fluid.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the field of vehicle thermal management systems, in particular for electric vehicles powered by a battery, comprising a heat carrier fluid sub-circuit and a refrigerant fluid sub-circuit. BACKGROUND

[0002] It is known to use, in a thermal management system, both a heat carrier fluid circuit and a refrigerant circuit to cool and / or heat various components of a vehicle, in particular an electric vehicle.

[0003] The configuration of the heat carrier fluid circuit and of the refrigerant fluid circuit is adapted according to the vehicle. They generally provide a plurality of operating modes, which are controlled by the opening or closing of valves, and allow to manage the flow rate of the heat carrier / refrigerant fluid circulating in the various components.

[0004] The adaptability of existing thermal management systems is generally limited by their design, which does not always allow to effectively prioritize various operating parameters, such as the comfort of the occupants or the cooling / heating efficiency of the components of the vehicle.

[0005] The present disclosure aims to overcome these drawbacks. SUMMARY

[0006] The present disclosure aims to improve this situation.

[0007] A thermal conditioning device is proposed for the passenger compartment and / or at least one component of a vehicle, said device comprising:

[0008] a heat carrier fluid circulating heat carrier circuit,

[0009] a refrigerant fluid circulating refrigerant circuit,

[0010] wherein the heat carrier circuit comprises said at least one vehicle component for heat exchange therein, a heat carrier fluid heating device, an inter-circuit heat exchanger, a front-end heat exchanger able to exchange heat with the outside air of the vehicle, and heat carrier fluid circulation means able to circulate the heat carrier fluid between the one or more vehicle components, the heat carrier fluid heating device, the front-end heat exchanger and / or the inter-circuit heat exchanger, and

[0011] wherein the refrigerant circuit comprises a compressor, a first heat exchanger and a second heat exchanger able to exchange heat with the air, a fourth heat exchanger, a fifth heat exchanger able to exchange heat with the outside air of the vehicle, and refrigerant fluid circulation means able to circulate the heat carrier fluid between the heat exchangers of the refrigerant circuit, and

[0012] wherein the inter-circuit heat exchanger of the heat carrier circuit and the fourth heat exchanger of the refrigerant circuit are arranged to exchange heat with each other.

[0013] The proposed device provides great versatility and therefore allows to control the temperature of key components of the vehicle, such as the battery, the cab, etc., and to recover part of the lost energy dissipated by certain components, such as the engine, the power electronics, etc. Thus, the proposed device can limit the energy consumption.

[0014] The device has a fixed physical configuration, while allowing to prioritize certain parameters, such as the comfort of the cab, the battery conditioning, the range of the vehicle, etc.

[0015] For example, the device can be controlled by means of a computer program. Thus, depending on the choice of the manufacturer, the computer program control can implement different performances of the vehicle without the need to make physical modifications to the components.

[0016] According to another aspect, a motor vehicle comprising the above-mentioned device is proposed.

[0017] The features set out hereinafter can be implemented, optionally, independently of each other, or in combination with each other:

[0018] The inter-circuit heat exchanger of the heat carrier circuit can be configured to heat and / or cool the refrigeration fluid. The fourth heat exchanger of the refrigeration circuit can be configured to heat and / or cool the heat carrier fluid.

[0019] The vehicle can be a hybrid / electric or battery electric motor vehicle. For a hybrid vehicle, the device can be adapted to the electrical part of the vehicle.

[0020] The heat carrier fluid can be any type of heat carrier fluid, in particular a fluid such as ethylene glycol water.

[0021] The refrigeration fluid or refrigerant can be any type of refrigeration fluid having at least a liquid phase and a gaseous phase.

[0022] The first and second heat exchangers are able to exchange heat with the air circulating in the vehicle cabin.

[0023] The vehicle components can be the heat exchangers of the high-voltage battery, the power electronics module or the traction engine.

[0024] In particular, the heat carrier circuit comprises simultaneously the heat exchangers of the high-voltage battery, the power electronics module and the traction engine.

[0025] According to a first embodiment of the heat carrier circuit, the heat carrier circuit can comprise four circuits in which the heat carrier fluid circulates and which are connected by a multi-way valve,

[0026] The first circuit B1 comprises the heat exchangers of the power electronics module and the traction engine,

[0027] The second circuit B2 comprises the high-voltage battery,

[0028] The third circuit B3 comprises a heating device of the heat carrier fluid and an intercircuit heat exchanger,

[0029] The fourth circuit B4 comprises a front-end heat exchanger.

[0030] The valve can be any device for controlling the flow or stopping the heat carrier fluid.

[0031] According to a second embodiment, the heat carrier circuit can comprise three circuits in which the heat carrier fluid circulates and which are connected by a multi-way valve,

[0032] The first circuit B1 comprises a power electronics module, an exchanger of the traction engine and a front-end heat exchanger,

[0033] The second circuit B2 comprises a high-voltage battery,

[0034] The third circuit B3 comprises a heating device of the heat carrier fluid and an intercircuit heat exchanger.

[0035] The first circuit of the heat carrier circuit and / or the third circuit of the heat carrier circuit can comprise a circulation pump.

[0036] The heating device of the heat carrier circuit can be a simple resistance or a positive temperature coefficient (also called "positive temperature coefficient" in English, for short PTC) resistance.

[0037] According to a first embodiment of the heat carrier circuit, the circulation device of the heat carrier circuit can be configured to work in at least one of the following modes:

[0038] a first mode in which, on the one hand, the first circuit and the fourth circuit are in communication so that the heat carrier fluid circulates in the first circuit and in the fourth circuit, and, on the other hand, the second circuit and the third circuit are in communication so that the heat carrier fluid circulates in the second circuit and in the third circuit,

[0039] a second mode in which the four circuits are in communication with each other so that the heat carrier fluid circulates in the four circuits, and

[0040] a third mode in which the first circuit, the third circuit and the fourth circuit are in communication so that the heat carrier fluid circulates in the first circuit, in the third circuit and in the fourth circuit.

[0041] According to a second embodiment of the heat carrier circuit, the circulation device of the heat carrier circuit can be configured to work in at least one of the following modes:

[0042] a first mode in which, on the one hand, the heat carrier fluid circulates in the first circuit, and, on the other hand, the second circuit and the third circuit are in communication so that the heat carrier fluid circulates in the second circuit and in the third circuit,

[0043] a second mode in which the three circuits are in communication with each other so that the heat carrier fluid circulates in the three circuits, and

[0044] A third mode in which the first circuit and the third circuit are in communication so that the heat transfer fluid circulates in the first circuit and in the third circuit.

[0045] According to one embodiment, the circulation means of the refrigeration circuit can be configured to operate in at least one of the following modes:

[0046] Mode A in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, the fifth heat exchanger and the second heat exchanger, the flow finally returning to the compressor,

[0047] Mode B in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, the fifth heat exchanger and the fourth heat exchanger, the flow finally returning to the compressor,

[0048] Mode C in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, the fifth heat exchanger, passing simultaneously through the fourth heat exchanger and the second heat exchanger, the flow finally returning to the compressor,

[0049] Mode D in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, passing simultaneously through the first heat exchanger and the fifth heat exchanger, then passing simultaneously through the fourth heat exchanger and the second heat exchanger, the flow finally returning to the compressor,

[0050] Mode E in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, passing simultaneously through the first heat exchanger and the fourth heat exchanger, then passing simultaneously through the fifth heat exchanger and the second heat exchanger, the flow finally returning to the compressor,

[0051] Mode F in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, the fourth heat exchanger and the fifth heat exchanger, the flow finally returning to the compressor,

[0052] Mode G in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, the fourth heat exchanger and the second heat exchanger, the flow finally returning to the compressor,

[0053] Mode H in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, the fourth heat exchanger, passing simultaneously through the fifth heat exchanger and the second heat exchanger, the flow finally returning to the compressor,

[0054] Mode I in which the refrigeration fluid circulates along a circuit comprising at least in succession the compressor, the first heat exchanger and the fifth heat exchanger, the flow finally returning to the compressor,

[0055] Mode J, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the first heat exchanger, passing through the fifth heat exchanger and the second heat exchanger, and finally flowing back to the compressor,

[0056] Mode K, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the first heat exchanger and the fourth heat exchanger, and finally flowing back to the compressor,

[0057] Mode L, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the first heat exchanger, passing through the fourth heat exchanger and the second heat exchanger, and finally flowing back to the compressor,

[0058] Mode M, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, passing through the first heat exchanger and the fourth heat exchanger, then the fifth heat exchanger, and finally flowing back to the compressor,

[0059] Mode N, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, passing through the first heat exchanger and the fifth heat exchanger, then the fourth heat exchanger, and finally flowing back to the compressor.

[0060] In particular, the circulation means of the refrigeration circuit can be configured to selectively operate in each of the modes A to N.

[0061] The heat transfer circuit can comprise a third heat exchanger. The third heat exchanger of the refrigeration circuit can comprise a first inlet / outlet and a second inlet / outlet. The third heat exchanger can be configured to heat the refrigerant fluid to a gaseous state before compression and to cool it after condensation. The third heat exchanger can be a refrigerant / refrigerant exchanger for preheating the gaseous refrigerant before compression and cooling the refrigerant after condensation. The third heat exchanger can be based on the internal heat exchanger (IHX) technology.

[0062] The refrigeration circuit can further comprise:

[0063] a first four-way valve and a second four-way valve,

[0064] a first expansion valve, a second expansion valve and a third expansion valve, and

[0065] a regulating valve.

[0066] The third heat exchanger and the fourth heat exchanger can be provided in a refrigeration block of the vehicle.

[0067] The control valve can be a soft-opening valve.

[0068] Each expansion valve can be configured to close the circuit completely, open to a very small extent to allow controlled expansion of the refrigerant fluid, or open completely.

[0069] Each four-way valve can be a two-position valve. For example, the operation of the four-way valves can be combined. In this case, a common actuator can be provided to control the simultaneous operation of the four-way valves.

[0070] The second four-way valve can be arranged to be connected two-by-two to one of the following points in the refrigeration circuit: the first branch or connection point, the first inlet / outlet of the heat exchanger, the first inlet / outlet of the heat exchanger and the third branch. The first four-way valve can be arranged to be connected two-by-two to one of the following points in the refrigeration circuit: the second branch, the second inlet / outlet of the heat exchanger, the second inlet / outlet of the heat exchanger and the fourth branch.

[0071] The first heat exchanger can have a first inlet / outlet connected to the first branch and a second inlet / outlet connected to the second branch.

[0072] The regulating valve can be arranged in the circuit connecting the second inlet / outlet to the first part of the second branch. Alternatively, the regulating valve can be arranged in the circuit connecting the first branch to the part of the first inlet / outlet of the first heat exchanger.

[0073] The compressor can be arranged in the circuit connecting the second branch to the second part of the outlet of the second inlet / outlet of the third heat exchanger.

[0074] The third branch can connect the outlet of the first inlet / outlet of the third heat exchanger, the second four-way valve and the first inlet / outlet of the second heat exchanger. The fourth branch can connect the inlet of the inlet / outlet of the third heat exchanger, the first four-way valve and the second inlet / outlet of the third heat exchanger.

[0075] The first expansion valve can be provided in the circuit connecting the third branch to the third part of the first inlet / outlet of the second heat exchanger. The second expansion valve can be provided in the refrigeration circuit connecting the second four-way valve to the fourth part of the first inlet / outlet of the fourth heat exchanger. The third expansion valve can be provided in the circuit connecting the second four-way valve to the fifth part of the first inlet / outlet of the fifth heat exchanger.

[0076] According to an embodiment, the circulation means of the refrigeration circuit can be configured to operate in at least one of the following modes:

[0077] Mode A, in which the refrigerant fluid circulates along a circuit comprising at least, in order: the compressor, the fifth heat exchanger, the first inlet / outlet of the third heat exchanger, the second heat exchanger and the second inlet / outlet of the third heat exchanger,

[0078] Mode B, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the fifth heat exchanger, the first inlet / outlet of the third heat exchanger, the fourth heat exchanger and the second inlet / outlet of the third heat exchanger,

[0079] Mode C, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the fifth heat exchanger, the first inlet / outlet of the third heat exchanger, simultaneously through the fourth heat exchanger and the second heat exchanger, then the second inlet / outlet of the third heat exchanger,

[0080] Mode D, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, simultaneously through the first heat exchanger and the fifth heat exchanger, then, in this order, the first inlet / outlet of the third heat exchanger, simultaneously through the fourth heat exchanger and the second heat exchanger, then the second inlet / outlet of the third heat exchanger,

[0081] Mode E, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, simultaneously through the first heat exchanger and the fourth heat exchanger, then, in this order, the first inlet / outlet of the third heat exchanger, simultaneously through the fifth heat exchanger and the second heat exchanger, then the second inlet / outlet of the third heat exchanger,

[0082] Mode F, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the fourth heat exchanger, the first inlet / outlet of the third heat exchanger, the fifth heat exchanger and the second inlet / outlet of the third heat exchanger,

[0083] Mode G, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the fourth heat exchanger, the first inlet / outlet of the third heat exchanger, the second heat exchanger and the second inlet / outlet of the third heat exchanger,

[0084] Mode H, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the fourth heat exchanger, the first inlet / outlet of the third heat exchanger, simultaneously through the fifth heat exchanger and the second heat exchanger, then the second inlet / outlet of the third heat exchanger,

[0085] Mode I, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the first heat exchanger, the first inlet / outlet of the third heat exchanger, the fifth heat exchanger and the second inlet / outlet of the third heat exchanger,

[0086] Mode J, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the first heat exchanger, the first inlet / outlet of the third heat exchanger, simultaneously through the fifth heat exchanger and the second heat exchanger, then the second inlet / outlet of the third heat exchanger,

[0087] Mode K, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the first heat exchanger, the first inlet / outlet of the third heat exchanger, the fourth heat exchanger and the second inlet / outlet of the third heat exchanger,

[0088] Mode L, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, the first heat exchanger, the first inlet / outlet of the third heat exchanger, simultaneously through the fourth heat exchanger and the second heat exchanger, then the second inlet / outlet of the third heat exchanger,

[0089] Mode M, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, simultaneously through the first heat exchanger and the fourth heat exchanger, then, in this order, the first inlet / outlet of the third heat exchanger, the fifth heat exchanger and the second inlet / outlet of the third heat exchanger,

[0090] Mode N, in which the refrigerant fluid circulates along a circuit comprising at least, in this order, the compressor, simultaneously through the first heat exchanger and the fifth heat exchanger, then, in this order, the first inlet / outlet of the third heat exchanger, the fourth heat exchanger and the second inlet / outlet of the third heat exchanger,

[0091] In particular, the circulation means of the refrigeration circuit can be configured to selectively operate in each of the modes A to N.

[0092] In mode A, the regulation valve and the second expansion valve can be completely closed. The third expansion valve can be completely open. The first expansion valve can be in regulation mode.

[0093] In mode G, the regulation valve and the third expansion valve can be completely closed. The second expansion valve can be completely open. The first expansion valve can be in regulation mode.

[0094] In mode B, the regulation valve and the first expansion valve can be completely closed. The third expansion valve can be completely open. The second expansion valve can be in regulation mode.

[0095] In mode C, the regulation valve can be completely closed. The third expansion valve can be completely open. The first expansion valve and the second expansion valve can be in regulation mode.

[0096] In mode H, the regulation valve can be completely closed. The second expansion valve can be completely open. The first expansion valve and the third expansion valve can be in regulation mode.

[0097] In mode I, the first expansion valve and the second expansion valve can be completely closed. The regulation valve can be completely open. The third expansion valve can be in regulation mode.

[0098] In mode J, the second expansion valve can be fully closed. The regulating valve can be fully open. The first expansion valve and the third expansion valve can be in regulation mode.

[0099] In mode K, the first expansion valve and the third expansion valve can be fully closed. The regulating valve can be fully open. The second expansion valve can be in regulation mode.

[0100] In mode L, the third expansion valve can be fully closed. The regulating valve can be fully open. The first expansion valve and the second expansion valve can be in regulation mode.

[0101] In mode N, the first expansion valve can be fully closed. The regulating valve and the third expansion valve can be fully open. The second expansion valve can be in regulation mode.

[0102] In mode F, the regulating valve and the first expansion valve can be fully closed. The second expansion valve can be fully open. The third expansion valve can be in regulation mode.

[0103] In mode M, the first expansion valve can be fully closed. The regulating valve and the second expansion valve can be fully open. The third expansion valve can be in regulation mode.

[0104] In mode D, the third expansion valve and the regulating valve can be fully open. The first expansion valve and the second expansion valve can be in regulation mode.

[0105] In mode E, the second expansion valve and the regulating valve can be fully open. The first expansion valve and the third expansion valve can be in regulation mode.

[0106] The 14 modes (A to N) of the refrigeration circuit combined with the 3 modes of the heat carrying circuit make it possible to obtain 42 different vehicle thermal management modes. BRIEF DESCRIPTION OF DRAWINGS

[0107] Other characteristics, details and advantages will appear from the following detailed description, analyzed in connection with the following drawings in which:

[0108] Figure 1

[0109] [ Figure 1 ] shows a thermal regulation device according to an embodiment.

[0110] Figure 2

[0111] [ Figure 2 ] shows a first operating mode of the heat carrying circuit of the device in Figure 1 according to a first embodiment.

[0112] Figure 3

[0113] [ Figure 3Fig. 8 shows a second operating mode of the heat carrier circuit of the apparatus in Figure 1 Fig. 9 shows a third operating mode of the heat carrier circuit of the apparatus in

[0114] Figure 4

[0115] [ Figure 4 Fig. 10 shows a first operating mode of the heat carrier circuit of the apparatus in Figure 1 Fig. 11 shows a second operating mode of the heat carrier circuit of the apparatus in

[0116] Figure 5

[0117] [ Figure 5 Fig. 12 shows a third operating mode of the heat carrier circuit of the apparatus in Figure 1 Fig. 13 shows a first operating mode of the heat carrier circuit of the apparatus in

[0118] Figure 6

[0119] [ Figure 6 Fig. 14 shows a second operating mode of the heat carrier circuit of the apparatus in Figure 1 Fig. 15 shows a third operating mode of the heat carrier circuit of the apparatus in

[0120] Figure 7

[0121] [ Figure 7 Fig. 16 shows a first operating mode of the heat carrier circuit of the apparatus in Figure 1 Fig. 17 shows a second operating mode of the heat carrier circuit of the apparatus in

[0122] Fig. 18 shows a third operating mode of the heat carrier circuit of the apparatus in

[0123] [ Figure 8A Fig. 19 shows a first embodiment of a valve that can be used in the apparatus in Figure 8B Fig. 20 shows a second embodiment of a valve that can be used in the apparatus in Figure 8C Fig. 21 shows a third embodiment of a valve that can be used in the apparatus in Figure 8A Fig. 22 shows a fourth embodiment of a valve that can be used in the apparatus in 8B Fig. 23 shows a fifth embodiment of a valve that can be used in the apparatus in Figure 1 Fig. 24 shows a first embodiment of a refrigeration circuit of the apparatus in

[0124] Figure 9

[0125] [ Figure 9 Fig. 25 shows a second embodiment of a refrigeration circuit of the apparatus in Figure 1 Fig. 26 shows a third embodiment of a refrigeration circuit of the apparatus in

[0126] Figure 10

[0127] [ Figure 10 Fig. 27 shows a fourth embodiment of a refrigeration circuit of the apparatus in Figure 1 Fig. 28 shows a fifth embodiment of a refrigeration circuit of the apparatus in

[0128] Figures 11 to 24

[0129] [ Figure 11 Fig. 29 shows a sixth embodiment of a refrigeration circuit of the apparatus in Fig. 30 shows a seventh embodiment of a refrigeration circuit of the apparatus in Fig. 31 shows an eighth embodiment of a refrigeration circuit of the apparatus in Fig. 32 shows a ninth embodiment of a refrigeration circuit of the apparatus in Fig. 33 shows a tenth embodiment of a refrigeration circuit of the apparatus in Fig. 34 shows an eleventh embodiment of a refrigeration circuit of the apparatus in Fig. 35 shows a twelfth embodiment of a refrigeration circuit of the apparatus in Fig. 36 shows a thirteenth embodiment of a refrigeration circuit of the apparatus in Fig. 37 shows a fourteenth embodiment of a refrigeration circuit of the apparatus in Fig. 38 shows a fifteenth embodiment of a refrigeration circuit of the apparatus in Fig. 39 shows a sixteenth embodiment of a refrigeration circuit of the apparatus in Fig. 40 shows a seventeenth embodiment of a refrigeration circuit of the apparatus in Fig. 41 shows an eighteenth embodiment of a refrigeration circuit of the apparatus in Fig.Figure 24 ] is a schematic view corresponding to Figure 10 and showing the various operating modes of the refrigeration circuit.

[0130] Figures 25 to 31

[0131] [ Figure 25 ] to Figure 31 show the device in Figure 1 according to various operating examples. DETAILED DESCRIPTION

[0132] Figure 1 A schematic view of a thermal conditioning device 1 is shown, for a passenger compartment and / or at least one component of a hybrid or electric vehicle. The device 1 comprises a heat carrier circuit 100 in which a heat carrier fluid circulates, as shown in detail in Figures 2 to 7 , and a refrigeration circuit 200 in which a refrigeration fluid circulates, as shown in detail in Figures 9 to 24 .

[0133] The heat carrier fluid can be any type of heat carrier fluid, in particular a liquid such as ethylene glycol water. The refrigeration fluid or refrigerant can be any type of refrigeration fluid having at least a liquid phase and a gaseous phase.

[0134] Figure 2 , 3 , 4 shows the heat carrier circuit 100 according to a first embodiment, Figure 5 , 6 , 7 shows the heat carrier circuit 130 according to a second embodiment of the heat carrier circuit.

[0135] With reference to Figures 2 to 4 , the heat carrier circuit 100 comprises:

[0136] - vehicle components comprising a high-voltage battery 104, heat exchangers of a traction engine 106 and power electronics modules 108,

[0137] - a heating device 110 of the heat carrier fluid,

[0138] - an intercircuit heat exchanger 102,

[0139] - a front-end heat exchanger 112, able to exchange heat with the outside air of the vehicle.

[0140] - a first pump 114,

[0141] - a second pump 116,

[0142] - a short-circuit valve 122, and

[0143] - an eight-way valve 118.

[0144] The heating device 110 can be a simple resistance or a positive temperature coefficient (also called "positive temperature coefficient" in English, for short PTC) resistance. The first pump 114 and the second pump 116 are circulation pumps and can be driven by an electric motor.

[0145] The heat carrier circuit 100 is formed by four circuits:

[0146] A first circuit comprising the power electronics module 108, the heat exchanger of the traction engine 106, the second pump 116,

[0147] A second circuit comprising the high-voltage battery 104,

[0148] A third circuit comprising the first pump 114, the heating device 110 of the heat carrier fluid and the intercircuit heat exchanger 102, and

[0149] A fourth circuit comprising the front-end heat exchanger 112 and the short-circuit valve 122.

[0150] The short-circuit valve 122 is connected simultaneously to a portion directly upstream of the front-end heat exchanger 112 and to a portion directly downstream of the heat exchanger 112.

[0151] The upstream and downstream are defined with respect to the direction of circulation of the heat carrier fluid in the heat carrier circuit 100.

[0152] In the heat carrier circuit 100, the eight-way valve 118 is configured to operate in at least one of the following modes.

[0153] A first operating mode of the heat carrier circuit 100 is illustrated in Figure 2 where, on the one hand, the first circuit and the fourth circuit are in communication so that the heat carrier fluid circulates in the first circuit and in the fourth circuit, and, on the other hand, the second circuit and the third circuit are in communication so that the heat carrier fluid circulates in the second circuit and in the third circuit. Thus, a portion of the heat carrier fluid circulates between the power electronics module 108, the heat exchanger of the traction engine 106, the second pump 116, the front-end heat exchanger 112 and the short-circuit valve 122. Another portion of the heat carrier fluid circulates between the high-voltage battery 104, the first pump 114, the heating device 110 of the heat carrier fluid and the intercircuit heat exchanger 102.

[0154] A second operating mode of the heat carrier circuit 100 is illustrated in Figure 3 where the four circuits are in communication with each other so that the heat carrier fluid circulates in the four circuits. Thus, the heat carrier fluid circulates between the high-voltage battery 104, the heat exchanger of the traction engine 106, the power electronics module 108, the heating device 110 of the heat carrier fluid, the intercircuit heat exchanger 102, the front-end heat exchanger 112, the first pump 114, the second pump 116, the short-circuit valve 122 and the eight-way valve 118.

[0155] A third operating mode of the heat carrier circuit 100 is illustrated in Figure 4 wherein the first, third and fourth circuits are in communication so that the heat carrier fluid circulates in the first and fourth circuits. Thus, the heat carrier fluid circulates between the heat exchanger of the traction engine 106, the power electronics module 108, the heat carrier fluid heating device 110, the inter-circuit heat exchanger 102, the front end heat exchanger 112, the first pump 114, the second pump 116, the short circuit valve 122 and the eight-way valve 118. In this operating mode, the fluid does not circulate in the high voltage battery 104.

[0156] With reference to Figures 5 to 7 , the heat carrier circuit 130 comprises the same components as the heat carrier circuit 100. Unlike the heat carrier circuit 100, the heat carrier circuit 130 comprises a six-way valve 120.

[0157] The heat carrier circuit 130 is formed by three circuits:

[0158] a first circuit comprising the power electronics module 108, the heat exchanger of the traction engine 106, the second pump 116, the short circuit valve 122 and the front end heat exchanger 112,

[0159] a second circuit comprising the high voltage battery 104, and

[0160] a third circuit comprising the first pump 114, the heat carrier fluid heating device 110 and the inter-circuit heat exchanger 102.

[0161] In the heat carrier circuit 130, the six-way valve 120 is configured to operate in at least one of the following modes.

[0162] A first operating mode of the heat carrier circuit 130 is illustrated in Figure 5 wherein, on the one hand, a portion of the heat carrier fluid circulates in the first circuit, and, on the other hand, the second and third circuits are in communication so that another portion of the heat carrier fluid circulates in the second and third circuits. Thus, a portion of the heat carrier fluid circulates between the power electronics module 108, the heat exchanger of the traction engine 106, the second pump 116, the front end heat exchanger 112 and the short circuit valve 122. Another portion of the heat carrier fluid circulates between the high voltage battery 104, the first pump 114, the heat carrier fluid heating device 110 and the inter-circuit heat exchanger 102.

[0163] A second operating mode of the heat carrier circuit 130 is illustrated in Figure 6As shown, the three circuits are in communication with each other so that the heat carrier fluid circulates in the three circuits. Thus, the heat carrier fluid circulates between the heat exchanger of the high-voltage battery 104, the heat exchanger of the traction engine 106, the power electronics module 108, the heating device 110 of the heat carrier fluid, the inter-circuit heat exchanger 102, the front-end heat exchanger 112 (capable of exchanging heat with the outside air of the vehicle), the first pump 114, the second pump 116, the short-circuit valve 122 and the eight-way valve 118.

[0164] A third operating mode of the heat carrier circuit 130 is shown in Figure 7 As shown, the first circuit and the third circuit are in communication so that the heat carrier fluid circulates in the first circuit and the third circuit. Thus, the heat carrier fluid circulates between the heat exchanger of the traction engine 106, the power electronics module 108, the heating device 110 of the heat carrier fluid, the inter-circuit heat exchanger 102, the front-end heat exchanger 112, the first pump 114, the second pump 116, the short-circuit valve 122 and the eight-way valve 118. In this operating mode, the fluid does not circulate in the high-voltage battery 104.

[0165] Figure 9 A first embodiment of a refrigeration circuit 200' is shown, which comprises:

[0166] a compressor C,

[0167] a first heat exchanger E1 forming a compressor and in particular arranged in the driver's cabin 210 or cockpit of the vehicle,

[0168] a second heat exchanger E2 forming an evaporator and in particular arranged in the driver's cabin 210 of the vehicle,

[0169] a third heat exchanger E3 comprising a first inlet / outlet 202 and a second inlet / outlet 204,

[0170] a fourth heat exchanger E4 configured to exchange heat with the heat carrier circuit 100 or the heat carrier circuit 130,

[0171] a fifth heat exchanger E5 capable of exchanging heat with the outside air of the vehicle, in particular arranged at the front face 230 of the vehicle, the fifth heat exchanger E5 being capable of acting as an evaporator or a condenser,

[0172] a circulation device of the refrigeration fluid capable of circulating the heat carrier fluid between the heat exchangers E1, E2, E3, E4 and E5 of the refrigeration circuit 200',

[0173] two four-way valves V1A and V1B,

[0174] three expansion valves VE2, VE4 and VE5, and

[0175] a regulating valve V1.

[0176] The third heat exchanger E3 and the fourth heat exchanger E4 can be provided in a refrigeration block 220 of the vehicle.

[0177] In particular, the third heat exchanger E3 is a refrigerant / refrigerant exchanger, allowing preheating of gaseous refrigerant before compression and cooling of liquid refrigerant after condensation. The third heat exchanger E3 can be based on the internal heat exchanger (English "Internal Heat Exchanger", abbreviated "IHX") technology.

[0178] The control valve V1 can be a soft open valve.

[0179] Each expansion valve VE2, VE4 and VE5 can be configured to either completely close the line, open it to a very small extent to allow controlled expansion of the refrigerant fluid, or completely open the line.

[0180] Each four-way valve V1A and V1B can be a two-position valve. For example, the operation of the four-way valves V1A and V1B can be combined. In this case, a common actuator can be provided to control the simultaneous operation of the four-way valves V1A and V1B.

[0181] The four-way valve V1B allows to be connected two by two to one of the following points in the refrigerant fluid line 200': the branch or connection point R1, the first inlet / outlet E5_1 of the heat exchanger E5, the first inlet / outlet E4_1 of the heat exchanger E4 and the branch R3. The four-way valve V1A allows to be connected two by two to one of the following points in the refrigerant fluid line 200': the branch R2, the second inlet / outlet E5_2 of the heat exchanger E5, the second inlet / outlet E4_2 of the heat exchanger E4 and the branch R4.

[0182] The heat exchanger E1 can have a first inlet / outlet E1_1 connected to the branch R1 and a second inlet / outlet E1_2 connected to the branch R2.

[0183] The regulating valve V1 is arranged on a portion P1 of the line, connecting the second inlet / outlet E1_2 to the branch R2. Optionally, the regulating valve V1 can be arranged on a portion P1'of the line, connecting the branch R1 to the first inlet / outlet E1_1 of the first heat exchanger E1.

[0184] The compressor C can be arranged on a portion P2 of the line, connecting the branch R2 to the second inlet / outlet 204 of the third heat exchanger E3.

[0185] The branch R3 connects the outlet of the first inlet / outlet 202 of the third heat exchanger E3, the four-way valve V1B and the first inlet / outlet E2_1 of the second heat exchanger E2. The branch R4 connects the inlet of the inlet / outlet 204 of the third heat exchanger E3, the four-way valve V1A and the second inlet / outlet E2_2 of the third heat exchanger E2.

[0186] An expansion valve VE2 is arranged in a portion P3 of the circuit connecting the branch R3 to the first inlet / outlet E2_1 of the second heat exchanger E2. An expansion valve VE4 is arranged in a portion P4 of the circuit connecting the four-way valve V1 B to the first inlet / outlet E4_1 of the fourth heat exchanger E4. An expansion valve VE5 is arranged in a portion P5 of the circuit connecting the four-way valve V1 B to the first inlet / outlet E5_1 of the fifth heat exchanger E5.

[0187] In the refrigeration circuit 200', the expansion valve VE2 is arranged in the cab 210 of the vehicle.

[0188] Figure 9 A second embodiment of the refrigeration circuit 200 is shown, comprising the same components as the refrigeration circuit 200', with the difference that the expansion valve VE2 is arranged in the refrigeration package 220 of the vehicle, instead of being installed in the cab 210 of the vehicle.

[0189] Figure 8A Embodiments of four-way valves are shown, which can be the valves V1 A or V1 B. Depending on the implementation requirements, at least one of the four-way valves V1 A and V1 B can be replaced by valves 310 and 320 arranged as two three-way all-or-nothing valve types, as shown in Figure 8B .

[0190] At least one of the four-way valves V1 A and V1 B can be replaced by valves 312, 314, 322 and 324 arranged as four two-way all-or-nothing valve types, as shown in Figure 8C .

[0191] The various operating modes of the heat carrier circuit of the refrigeration circuit 200 in Figure 10 are described below, but also apply to the refrigeration circuit 200' in Figure 9 .

[0192] The two positions of the valves V1 A and V1 B in combination with the two positions of V1 and the three states of the expansion valves VE2, VE4 and VE5 allow the heat carrier circuit to be operated in one of the following 14 operating states.

[0193] Figure 11 An operating mode A of the refrigeration circuit 200 is shown, in which the refrigeration fluid from the compressor C passes successively through the valve V1 A, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the expansion valve VE5, the valve V1 B, the first inlet / outlet 202 of the third heat exchanger E3, the expansion valve VE2, the first inlet / outlet E2_1 of the second heat exchanger E2 and the second inlet / outlet 204 of the third heat exchanger E3, and finally back to the compressor C.

[0194] Mode A represents the basic air conditioning mode for cooling the cab only.

[0195] In mode A, the refrigerant fluid is condensed in the fifth heat exchanger E5, expanded by the expansion valve VE2 and evaporated in the second heat exchanger E2, which generates a flow of cold air diffused into the vehicle cabin.

[0196] In mode A, the third heat exchanger E3 ensures, by internal heat exchange, the heating of the gas evaporated in the exchanger E2 before compression and the cooling of the fluid condensed in the exchanger E5.

[0197] In mode A, the regulating valve V1 and the expansion valve VE4 are fully closed. The expansion valve VE5 is fully open. The expansion valve VE2 is in regulation mode.

[0198] Figure 12 A working mode G of the refrigeration circuit 200 is illustrated, in which the refrigerant fluid coming from the compressor C passes successively through the valve V1A, the fourth heat exchanger E4, the expansion valve VE4, the valve V1B, the first inlet / outlet of the third heat exchanger E3, the expansion valve VE2, the second heat exchanger E2 and the second inlet / outlet of the third heat exchanger E3, and finally flows back to the compressor C.

[0199] Mode G is a cab basic air conditioning mode, combined with heat exchange using the heat carrier circuit 100, for heating with the high voltage battery 104 and / or the power electronics module 108.

[0200] In mode G, the refrigerant is condensed in the fourth heat exchanger E4 to allow heating of the heat carrier fluid, then expanded by the expansion valve VE2 and evaporated in the second heat exchanger E2, which generates a flow of cold air diffused into the vehicle cabin.

[0201] In mode G, the third heat exchanger E3 ensures, by internal heat exchange, the heating of the gas evaporated in the exchanger E2 before compression and the cooling of the fluid condensed in the exchanger E4.

[0202] In mode G, the regulating valve V1 and the expansion valve VE5 are fully closed. The expansion valve VE4 is fully open. The expansion valve VE2 is in regulation mode.

[0203] Figure 13 A working mode B of the refrigeration circuit 200 is illustrated, in which the refrigerant fluid coming from the compressor C passes successively through the valve V1A, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the expansion valve VE5, the valve V1B, the first inlet / outlet 202 of the third heat exchanger E3, the valve VE4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the valve V1A and the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to the compressor C.

[0204] Mode B is the basic forced cooling mode for the high-voltage battery 104 and / or the power electronics module 108. In this mode, the vehicle's cab temperature is not regulated.

[0205] In mode B, the refrigerant is condensed in the fifth heat exchanger E5, expanded through the expansion valve VE4, and evaporated in the fourth heat exchanger E4, which cools the heat transfer fluid, which then flows to the high-voltage battery 104 and / or the power electronics module 108 according to the operating mode of the heat transfer line 100.

[0206] In Mode B, the third heat exchanger E3 ensures that the gas evaporated in the exchanger E4 is heated before compression and the fluid condensed in the exchanger E5 is cooled by internal heat exchange.

[0207] In mode B, regulating valve V1 and expansion valve VE2 are fully closed. Expansion valve VE5 is fully open. Expansion valve VE4 is in regulating mode.

[0208] Figure 14 The diagram illustrates the operating mode C of the refrigeration circuit 200, in which refrigerant from compressor C sequentially passes through the second inlet / outlet E5_2 of the fifth heat exchanger E5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, expansion valve VE5, valve V1B, and the first inlet / outlet 202 of the third heat exchanger E3. At branch R3, a portion of the refrigerant sequentially passes through valve V1B, expansion valve VE4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, and the second inlet / outlet E4_2 of the fourth heat exchanger E4, so that it subsequently merges with another portion of the refrigerant at branch R4. The remaining refrigerant flowing out of branch R3 sequentially passes through expansion valve VE2, the first inlet / outlet E2_1 of the second heat exchanger E2, and the second inlet / outlet E2_2 of the second heat exchanger E2, so that it merges with the remaining refrigerant at branch R4, then passes through the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to compressor C.

[0209] Mode C is a combined mode that allows simultaneous cooling of the cab 210 and the high-voltage battery 104 and / or the power electronics module 108.

[0210] In mode C, the refrigerant is condensed in the fifth heat exchanger E5, and part of it expands through VE2 and evaporates in E2, which creates a flow of cold air that diffuses into the cabin. Another part of it expands through VE4 and evaporates in E4, which cools the heat transfer fluid that flows to the battery and / or power electronics.

[0211] In mode C, the third heat exchanger E3 ensures that the gas evaporated in exchangers E2 and E4 is heated before compression and the fluid condensed in exchanger E5 is cooled by internal heat exchange.

[0212] In mode C, the regulating valve V1 is fully closed. The expansion valve VE5 is fully open. The expansion valve VE2 and the expansion valve VE4 are in regulation mode.

[0213] Figure 15 A working mode H of the refrigeration circuit 200 is shown, in which the refrigerant fluid coming from the compressor C passes successively through the valve V1A, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the expansion valve VE4, the valve V1B, the first inlet / outlet 202 of the third heat exchanger E3. Then, at the branch R3, a part of the refrigerant fluid passes successively through the valve V1B, the expansion valve VE5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the valve V1A, so as to be merged with another part of the fluid at the branch R4. Another part of the refrigerant fluid coming out of the branch R3 passes successively through the expansion valve VE2, the first inlet / outlet E2_1 of the second heat exchanger E2, the second inlet / outlet E2_2 of the second heat exchanger E2, so as to be merged with the rest of the refrigerant fluid at the branch R4, then through the second inlet / outlet 204 of the third heat exchanger E3, and finally back to the compressor C.

[0214] Mode H is a combined mode allowing to simultaneously cool the vehicle cab 210 and heat the high-voltage battery 104 and / or the power electronics module 108.

[0215] In mode H, the refrigerant fluid is condensed in the fourth heat exchanger E4 to heat the carrier fluid which flows to the high-voltage battery 104 and / or the power electronics module 108, then a part of the refrigerant fluid is expanded by the expansion valve VE2 and evaporated in the second heat exchanger E2, which generates a cold air flow to the cabin 210, another part of the refrigerant fluid is expanded by the expansion valve VE5 and evaporated in the fifth heat exchanger E5.

[0216] In mode H, the third heat exchanger E3 ensures, by internal heat exchange, heating of the gas evaporated in the exchanger E2 before compression, and cooling of the fluid condensed in the exchanger E4.

[0217] In mode H, the regulating valve V1 is fully closed. The expansion valve VE4 is fully open. The expansion valve VE2 and the expansion valve VE5 are in regulation mode.

[0218] Figure 16A working mode I of the refrigeration circuit 200 is shown, in which the refrigeration fluid coming from the compressor C passes successively through the regulating valve V1, the second inlet / outlet E1 _2 of the first heat exchanger E1, the first inlet / outlet E1 _1 of the first heat exchanger E1, the first inlet / outlet 202 of the third heat exchanger E3, the valve V1 B, the expansion valve VE5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the valve V1 A, the second inlet / outlet 204 of the third heat exchanger E3, and finally back to the compressor C.

[0219] Mode I is the basic mode for heating the cab 210 by the heat pump.

[0220] In mode I, the refrigeration fluid is condensed in the first heat exchanger E1, which heats the air flowing into the cab 210, then the fluid expands through the expansion valve VE5 and evaporates in the fifth heat exchanger E5.

[0221] In mode I, the third heat exchanger E3 ensures, by internal heat exchange, heating of the gas evaporated in the exchanger E5 before compression, and cooling of the fluid condensed in the exchanger E1.

[0222] In mode I, the expansion valves VE2 and VE4 are completely closed. The regulating valve V1 is completely open. The expansion valve VE5 is in regulation mode.

[0223] Figure 17 A working mode J of the refrigeration circuit 200 is shown, in which the refrigeration fluid coming from the compressor C passes successively through the valve V1, the second inlet / outlet E1 _2 of the first heat exchanger E1, the first inlet / outlet E1 _1 of the first heat exchanger E1, the first inlet / outlet 202 of the third heat exchanger E3. At the branch R3, a part of the refrigeration fluid passes through the valve V1 B, the expansion valve VE5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the valve V1 A, so as to join the rest of the refrigeration fluid at the branch R4. Another part of the refrigeration fluid flowing from the branch R3 passes successively through the expansion valve VE2, the first inlet / outlet E2_1 of the second heat exchanger E2, the second inlet / outlet E2_2 of the second heat exchanger E2, so as to join the rest of the refrigeration fluid at the branch R4. At the outlet of the branch R4, the refrigeration fluid passes through the second inlet / outlet 204 of the third heat exchanger E3, and then back to the compressor C.

[0224] Mode J is a hybrid mode allowing heating of the cab 210 and defrosting of the windshield of the vehicle.

[0225] In mode J, the refrigerant fluid is condensed in the first heat exchanger E1 which heats the air flowing into the passenger compartment 210, then a portion of the fluid is expanded by the expansion valve VE2 and evaporated in the second heat exchanger E2 which allows to dehumidify the air of the passenger compartment, then the air is heated in the first heat exchanger E1. Another portion of the refrigerant fluid is expanded by the expansion valve VE5 and evaporated in the fifth heat exchanger E5.

[0226] In mode J, the third heat exchanger E3 ensures, by internal heat exchange, heating of the gases evaporated in the exchangers E2 and E5 before compression, and cooling of the fluid condensed in the exchanger E1.

[0227] In mode J, the expansion valve VE4 is fully closed. The regulation valve V1 is fully open. The expansion valve VE2 and the expansion valve VE5 are in regulation mode.

[0228] Figure 18 A working mode K of the refrigeration circuit 200 is illustrated, in which the refrigerant fluid from the compressor C passes successively through the valve V1, the second inlet / outlet E1_2 of the first heat exchanger E1, the first inlet / outlet E1_1 of the first heat exchanger E1, the first inlet / outlet 202 of the third heat exchanger E3, the valve V1B, the expansion valve VE4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the valve V1A, the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to the compressor C.

[0229] Mode K is the basic mode for heating the passenger compartment using the heat of the heat carrier liquid.

[0230] In mode K, the refrigerant fluid is condensed in the first heat exchanger E1 which heats the air flowing into the passenger compartment 210, then the refrigerant fluid is expanded by the expansion valve VE4 and evaporated in the fourth heat exchanger E4 which allows to cool the heat carrier fluid flowing towards the high voltage battery 104 and / or the power electronics module 108.

[0231] In mode K, the third heat exchanger E3 ensures, by internal heat exchange, heating of the gases evaporated in the exchanger E4 before compression, and cooling of the fluid condensed in the exchanger E1.

[0232] In mode K, the expansion valve VE2 and the expansion valve VE5 are fully closed. The regulation valve V1 is fully open. The expansion valve VE4 is in regulation mode.

[0233] Figure 19A working mode L of the refrigeration circuit 200 is shown, in which the refrigeration fluid coming from the compressor C passes successively through the valve V1, the second inlet / outlet E1 _2 of the first heat exchanger E1, the first inlet / outlet E1 _1 of the first heat exchanger E1, the first inlet / outlet 202 of the third heat exchanger E3. Then, at the branch R3, a part of the refrigeration fluid passes successively through the valve V1 B, the expansion valve VE4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the valve V1 A, so as to join the rest of the refrigeration fluid at the branch R4. Another part of the refrigeration fluid coming from the branch R3 passes successively through the expansion valve VE2, the first inlet / outlet E2_1 of the second heat exchanger E2, the second inlet / outlet E2_2 of the second heat exchanger E2, so as to join the rest of the refrigeration fluid at the branch R4. The refrigeration fluid coming from the branch R4 passes through the second inlet / outlet 204 of the third heat exchanger E3, then flows back to the compressor C.

[0234] Mode L is a hybrid mode allowing heating of the cabin 210 and defrosting of the windshield, as well as cooling of the heat carrier fluid which can be used to cool the high-voltage battery 104 and / or the power electronics module 108.

[0235] In mode L, the refrigeration fluid is condensed in the first heat exchanger E1, which heats the air flowing into the cabin 210, then a part of the fluid is expanded by the expansion valve VE2 and evaporated in the second heat exchanger E2, which allows dehumidifying the air in the cabin, then the air is heated in the first heat exchanger E1. Another part of the refrigeration fluid is expanded by the expansion valve VE4 and evaporated in the fourth heat exchanger E4, which allows cooling the heat carrier fluid flowing to the high-voltage battery 104 and / or the power electronics module 108.

[0236] In mode L, the third heat exchanger E3 ensures, by internal heat exchange, heating of the gases evaporated in the exchangers E2 and E4 before compression, and cooling of the fluid condensed in the exchanger E1.

[0237] In mode L, the expansion valve VE5 is fully closed. The regulating valve V1 is fully open. The expansion valve VE2 and the expansion valve VE4 are in regulation mode.

[0238] Figure 20A working mode N of the refrigeration circuit 200 is shown, in which the refrigeration fluid coming from the compressor C is divided into two parts at the branch R2. One part of the refrigeration fluid passes through the valve V1A, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the expansion valve VE5, the valve V1B, in order to join the rest of the refrigeration fluid at the branch R1. The other part of the refrigeration fluid coming from the branch R2 passes successively through the valve V1, the second inlet / outlet E1_2 of the first heat exchanger E1, the first inlet / outlet E1_1 of the first heat exchanger E1, in order to join the rest of the refrigeration fluid. The refrigeration fluid coming from the branch R1 passes successively through the first inlet / outlet 202 of the third heat exchanger E3, the valve V1B, the expansion valve VE4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the valve V1A, the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to the compressor C.

[0239] Mode N is the basic mode for heating the cab 210 and for high power cooling of the high voltage battery 104 and / or the power electronics module 108.

[0240] In mode N, the refrigerant is condensed in the first heat exchanger E1, which heats the incoming cab air, and in the fifth heat exchanger E5, which allows better condensation, then the fluid is expanded through VE4 and evaporated in E4 to allow cooling of the heat carrying fluid which flows to the battery and / or power electronics.

[0241] In mode N, the third heat exchanger E3 ensures, by internal heat exchange, heating of the gas evaporated in the exchanger E4 before compression, and cooling of the fluids condensed in the exchangers E1 and E5.

[0242] In mode N, the expansion valve VE2 is fully closed. The regulating valve V1 and the expansion valve VE5 are fully open. The expansion valve VE4 is in regulating mode.

[0243] Figure 21 A working mode F of the refrigeration circuit 200 is shown, in which the refrigeration fluid coming from the compressor C passes successively through the valve V1A, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the expansion valve VE4, the valve V1B, the first inlet / outlet 202 of the third heat exchanger E3, the valve V1B, the expansion valve VE5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the valve V1A, the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to the compressor C.

[0244] Mode F is the mode which allows heating of the high voltage battery 104 and / or the power electronics module 108 with ambient air.

[0245] In mode F, the refrigerant fluid is condensed in the fourth heat exchanger E4, which heats the heat carrier fluid flowing to the high-voltage battery 104 and / or to the power electronics module 108, then the heat carrier fluid expands through the expansion valve VE5 and evaporates in the fifth heat exchanger E5.

[0246] In mode F, the third heat exchanger E3 ensures, through internal heat exchange, heating of the gas evaporated in the exchanger E5 before compression and cooling of the fluid condensed in the exchanger E4.

[0247] In mode F, the regulating valve V1 and the expansion valve VE2 are fully closed. The expansion valve VE4 is fully open. The expansion valve VE5 is in regulating mode.

[0248] Figure 22 A working mode M of the refrigeration circuit 200 is shown, in which the refrigerant fluid from the compressor C is divided into two parts at the branch R2. One part of the refrigerant fluid passes through the valve V1A, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the expansion valve VE4, the valve V1B, in order to join the rest of the refrigerant fluid at the branch R1. The other part of the refrigerant fluid flowing from the branch R2 passes, in turn, through the valve V1, the second inlet / outlet E1_2 of the first heat exchanger E1, the first inlet / outlet E1_1 of the first heat exchanger E1, in order to join the rest of the refrigerant fluid. The refrigerant fluid flowing from the branch R1 passes, in turn, through the first inlet / outlet 202 of the third heat exchanger E3, the valve V1B, the expansion valve VE5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the valve V1A, the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to the compressor C.

[0249] Mode M is a hybrid mode that allows heating of the cabin 210 with ambient air and heating of the high-voltage battery 104 and / or of the power electronics module 108.

[0250] In mode M, the refrigerant fluid is condensed in the first heat exchanger E1, which heats the air flowing into the cabin 210, and also in the fourth heat exchanger E4, which heats the heat carrier fluid flowing to the high-voltage battery 104 and / or to the power electronics module 108, then the fluid expands through the expansion valve VE5 and evaporates in the fifth heat exchanger E5.

[0251] In mode M, the third heat exchanger E3 ensures, through internal heat exchange, heating of the gas evaporated in the exchanger E5 before compression and cooling of the fluid condensed in the exchangers E1 and E4.

[0252] In mode M, the expansion valve VE2 is fully closed. The regulating valve V1 and the expansion valve VE4 are fully open. The expansion valve VE5 is in regulation mode.

[0253] Figure 23 The mode D concerns the operation of the refrigeration circuit 200, wherein the refrigerant fluid from the compressor C is divided into two parts at the branch R2. One part of the refrigerant fluid passes through the valve V1A, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the expansion valve VE5, the valve V1B, so as to join the rest of the refrigerant fluid at the branch R1. The other part of the refrigerant fluid from the branch R2 passes successively through the valve V1, the second inlet / outlet E1_2 of the first heat exchanger E1, the first inlet / outlet E1_1 of the first heat exchanger E1, so as to join the rest of the refrigerant fluid at the branch R1. The refrigerant fluid from the branch R1 passes through the first inlet / outlet 202 of the third heat exchanger E3, then at the branch R3, one part of the refrigerant fluid passes successively through the valve V1B, the expansion valve VE4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the valve V1A, so as to join the rest of the refrigerant fluid at the branch R4. The other part of the refrigerant fluid from the branch R3 passes successively through the expansion valve VE2, the first inlet / outlet E2_1 of the second heat exchanger E2, the second inlet / outlet E2_2 of the second heat exchanger E2, so as to join the rest of the refrigerant fluid at the branch R4. The refrigerant fluid from the branch R4 outlet passes through the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to the compressor C.

[0254] The mode D is a hybrid mode allowing heating of the cabin 210 and defrosting of the windshield, as well as high-power cooling of the high-voltage battery 104 and / or the power electronics module 108.

[0255] In mode D, the refrigerant fluid is condensed in the first heat exchanger E1, which heats the air flowing into the cabin 210, and also in the fifth heat exchanger E5, then one part of the fluid is expanded by the expansion valve VE2 and evaporated in the second heat exchanger E2, which allows dehumidification of the air of the cabin 210, then the air is heated in the first heat exchanger E1. Another part of the fluid is expanded by the expansion valve VE4 and evaporated in the fourth heat exchanger E4, which cools the heat carrier fluid flowing towards the high-voltage battery 104 and / or the power electronics module 108.

[0256] The third heat exchanger E3 ensures, by internal heat exchange, heating of the gases evaporated in the exchangers E2 and E4 before compression, and cooling of the fluids condensed in the exchangers E1 and E5.

[0257] In mode D, the expansion valve VE5 and the regulation valve V1 are fully open. The expansion valve VE2 and the expansion valve VE4 are in regulation mode.

[0258] Figure 24 is the operating mode E of the refrigeration circuit 200, in which the refrigerant fluid from the compressor C is divided into two parts at the branch R2. One part of the refrigerant fluid passes through the valve V1A, the second inlet / outlet E4_2 of the fourth heat exchanger E4, the first inlet / outlet E4_1 of the fourth heat exchanger E4, the expansion valve VE4, the valve V1B, so as to join the rest of the refrigerant fluid at the branch R1. The other part of the refrigerant fluid from the branch R2 passes successively through the valve V1, the second inlet / outlet E1_2 of the first heat exchanger E1, the first inlet / outlet E1_1 of the first heat exchanger E1, so as to join the rest of the refrigerant fluid at the branch R1. The refrigerant fluid from the branch R1 passes through the first inlet / outlet 202 of the third heat exchanger E3, then is divided into two parts at the branch R3. One part of the refrigerant fluid passes successively through the valve V1B, the expansion valve VE5, the first inlet / outlet E5_1 of the fifth heat exchanger E5, the second inlet / outlet E5_2 of the fifth heat exchanger E5, the valve V1A, so as to join the other part of the fluid at the branch R4. The other part of the refrigerant fluid from the branch R3 passes successively through the expansion valve VE2, the first inlet / outlet E2_1 of the second heat exchanger E2, the second inlet / outlet E2_2 of the second heat exchanger E2, so as to join the rest of the refrigerant fluid at the branch R4, then passes through the second inlet / outlet 204 of the third heat exchanger E3, and finally flows back to the compressor C.

[0259] Mode E is a hybrid mode allowing heating of the cabin 210 and defrosting of the windshield, as well as high power heating of the high voltage battery 104 and / or the power electronics module 108.

[0260] In mode E, the refrigerant fluid is condensed in the first heat exchanger E1, which heats the air flowing into the cabin 210, and also in the fourth heat exchanger E4, which heats the heat carrier fluid flowing to the high voltage battery 104 and / or the power electronics module 108, then a part of the refrigerant fluid is expanded by the expansion valve VE2 and evaporated in the second heat exchanger E2, which allows dehumidification of the air of the cabin, then the air is heated in the first heat exchanger E1. Another part of the refrigerant fluid is expanded by the expansion valve VE5 and then evaporated in the fifth heat exchanger E5.

[0261] In mode E, the third heat exchanger E3 ensures, by internal heat exchange, heating of the gases evaporated in the exchangers E2 and E5 before compression, and cooling of the fluids condensed in the exchangers E1 and E4.

[0262] In mode E, the expansion valve VE4 and the regulation valve V1 are fully open. The expansion valve VE2 and the expansion valve VE5 are in regulation mode.

[0263] The 14 modes (A to N) of the refrigeration circuit 200 combined with the 3 modes (1 to 3) of the heat carrier circuit make it possible to obtain 42 different modes.

[0264] As an example, but not limited thereto, several examples of operating modes of a thermal conditioning device comprising a heat carrier circuit 100 and a refrigeration circuit 200 are described below. Each mode is identified by a label consisting of a letter corresponding to the mode of the refrigeration circuit 200 and a number corresponding to the mode of the heat carrier circuit 100.

[0265] Figure 25 An operating mode I2 of the device is illustrated, in which the refrigeration circuit 200 operates in mode I in Figure 16 and the heat carrier circuit 100 operates in the second operating mode in Figure 3 This mode I2 can be used in the case of fast driving of the vehicle in cold weather. Thus, the refrigeration circuit 200 is used as a heat pump to heat the cabin 210 using the ambient air, while the heat carrier circuit 100 recovers heat from the propulsion system through the heat exchanger of the traction engine 106 to heat the high-voltage battery 104.

[0266] Figure 26 An operating mode N2 of the device is illustrated, in which the refrigeration circuit 200 operates in mode N in Figure 20 and the heat carrier circuit 100 operates in the second operating mode in Figure 3 This mode N2 can be used in the case of fast charging of the high-voltage battery 104 in cold weather. Thus, the refrigeration circuit 200 is used as a heat pump to heat the cabin 210, while the heat carrier circuit 100 recovers the cold produced by the evaporation of the refrigerant fluid to cool the high-voltage battery 104.

[0267] Figure 27 An operating mode K2 of the device is illustrated, in which the refrigeration circuit 200 operates in mode K in Figure 18 and the heat carrier circuit 100 operates in the second operating mode in Figure 3 This mode K2 can be used in the case of fast driving of the vehicle in cold weather after charging of the high-voltage battery 104. Thus, the refrigeration circuit 200 is used as a heat pump to heat the cabin 210 using the high-voltage battery 104 as a heat source.

[0268] Figure 28 An operating mode C1 of the device is illustrated, in which the refrigeration circuit 200 operates in mode C in Figure 14 and the heat carrier circuit 100 operates in Figure 2The system operates in the first operating mode. This mode C1 can be used for high-speed driving in hot weather. Therefore, the cooling circuit 200 is used to cool the cabin 210 and the high-voltage battery 104 using ambient air in air conditioning mode. The heat transfer circuit 100 is used to passively cool the propulsion system by utilizing ambient air to cool the traction engine 106.

[0269] Figure 29 The operating mode A1 of the device is shown, in which the cooling line 200 is in Figure 11 Operating in Mode A, the heat transfer line 100 is in Figure 2 The system operates in the first operating mode. This mode A1 can be used to initiate rapid charging of the high-voltage battery 104 in hot weather. Therefore, the cooling line 200 is used to cool the cabin 210 using ambient air in air conditioning mode. The pre-cooled high-voltage battery 104 self-heats. The heat-carrying line 100 can be used to passively cool the propulsion system by using ambient air to cool the traction engine 106 when necessary.

[0270] Figure 30 The operating mode K3 of the device is shown, in which the cooling circuit 200 is in Figure 18 Operating in mode K, the heat transfer line 100 is in Figure 4 It operates in the third working mode. This mode K3 is suitable for urban driving in cold weather. The cooling circuit 200 is used to heat the cabin 210 in heat pump mode using heat generated by the propulsion system and recovered by the heat transfer line 100 through the heat exchanger of the traction engine 106. The pre-regulated high-voltage battery 104 is uncontrolled during this stage.

[0271] Figure 31 The operating mode I3 of the device is shown, in which the cooling circuit 200 is in Figure 16 Operating in Mode I, the heat transfer line 100 is in Figure 4 It operates in the third working mode. This mode I3 is suitable for urban driving in cold weather. The cooling circuit 200 is used to heat the cabin 210 using ambient air in heat pump mode when the temperature of the propulsion system drops to the ambient temperature. The pre-regulated high-voltage battery 104 is uncontrolled during this stage.

[0272] The illustrations above are just examples of seven possible uses among these 42 feasible technical modes. Other uses of the vehicle advantageously realize other modes, just as the modes described can be used in other usage scenarios.

Claims

1. A thermal conditioning device for the cab and / or at least one component of a vehicle, comprising: - a circulation of a heat carrier fluid (100), - a circulation of a refrigerant fluid (200), characterized in that the heat carrier circuit (100) comprises the at least one vehicle component (104, 106, 108) for heat exchange therein, a heating device (110) of the heat carrier fluid, an intercircuit heat exchanger (102), a front heat exchanger (112) capable of heat exchange with the outside air of the vehicle, and a heat carrier fluid circulation device capable of circulating the heat carrier fluid between the one or more vehicle components (104, 106, 108), the heating device (110) of the heat carrier fluid, the front heat exchanger (112) and / or the intercircuit heat exchanger (102), the refrigerant circuit (200) comprises a compressor (C), a first heat exchanger (El) and a second heat exchanger (E2) capable of heat exchange with air, a fourth heat exchanger (E4), a fifth heat exchanger (E5) capable of heat exchange with the outside air of the vehicle, and a circulation device of the refrigerant fluid capable of circulating the heat carrier fluid between the heat exchangers of the refrigerant circuit, and wherein the intercircuit heat exchanger (102) of the heat carrier circuit and the fourth heat exchanger (E4) of the refrigerant circuit are arranged in heat exchange with each other.

2. The apparatus of claim 1, wherein, The vehicle components (104, 106, 108) are heat exchangers of a high-voltage battery (104), a power electronics module (108) or a traction engine (106).

3. The apparatus of claim 2, wherein, The heat carrier circuit comprises four circuits in which the heat carrier fluid circulates and which are connected by a multi-way valve (118), a first circuit comprising the heat exchangers of the power electronics module (108) and the traction engine (106), a second circuit comprising the high-voltage battery (104), a third circuit comprising the heating device (110) of the heat carrier fluid and the intercircuit heat exchanger (102), a fourth circuit comprising the front heat exchanger (112).

4. The apparatus of claim 2, wherein, The heat carrier circuit comprises three circuits in which the heat carrier fluid circulates and which are connected by a multi-way valve (120), a first circuit comprising the heat exchangers of the power electronics module (108), the traction engine (106), the front heat (112), a second circuit comprising the high-voltage battery (104), a third circuit comprising the heating device (110) of the heat carrier fluid and the intercircuit heat exchanger (102).

5. The apparatus of claim 3 or 4, wherein, The first circuit of the heat carrier circuit and / or the third circuit of the heat carrier circuit comprise a circulation pump (114, 116).

6. The apparatus of any of the preceding claims, wherein, The heating device (110) of the heat carrier circuit (100) is a simple resistance or a positive temperature coefficient resistance.

7. The apparatus according to any of the preceding claims and in combination with claim 3, characterized by The circulation device of the heat carrier circuit is configured to operate in at least one of the following modes: - a heating mode in which the heat carrier fluid is heated by the heating device (110) of the heat carrier fluid and the heat exchangers of the heat carrier circuit are cooled by the intercircuit heat exchanger (102) and the front heat exchanger (112), - a cooling mode in which the heat carrier fluid is cooled by the intercircuit heat exchanger (102) and the front heat exchanger (112) and the heat exchangers of the heat carrier circuit are heated by the fourth heat exchanger (E4) of the refrigerant circuit, - a heating and cooling mode in which the heat carrier fluid is heated by the heating device (110) of the heat carrier fluid and the heat exchangers of the heat carrier circuit are cooled by the intercircuit heat exchanger (102) and the front heat exchanger (112), and the heat carrier fluid is cooled by the fourth heat exchanger (E4) of the refrigerant circuit and the heat exchangers of the heat carrier circuit are heated by the fifth heat exchanger (E5) of the refrigerant circuit. a first mode (Figure 2) in which, on the one hand, the first circuit and the fourth circuit are in communication so that the heat transfer fluid circulates in the first circuit and in the fourth circuit, and, on the other hand, the second circuit and the third circuit are in communication so that the heat transfer fluid circulates in the second circuit and in the third circuit, a second mode (Figure 3) in which the four circuits are in communication with each other so that the heat transfer fluid circulates in the four circuits, and a third mode (Figure 4) in which the first circuit, the third circuit and the fourth circuit are in communication so that the heat transfer fluid circulates in the first circuit, in the third circuit and in the fourth circuit.

8. The apparatus according to any of the preceding claims and in combination with claim 4, characterized by the circulation means of the heat transfer circuit are configured to operate in at least one of the following modes: a first mode (Figure 5) in which, on the one hand, the heat transfer fluid circulates in the first circuit, and, on the other hand, the second circuit and the third circuit are in communication so that the heat transfer fluid circulates in the second circuit and in the third circuit, a second mode (Figure 6) in which the three circuits are in communication with each other so that the heat transfer fluid circulates in the three circuits, and a third mode (Figure 7) in which the first circuit and the third circuit are in communication so that the heat transfer fluid circulates in the first circuit and in the third circuit.

9. The apparatus of any of the preceding claims, wherein, the circulation means of the refrigeration circuit are configured to operate in at least one of the following modes: a mode A (Figure 11) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, a compressor (C), the fifth heat exchanger (E5) and the second heat exchanger (E2), and finally flows back into the compressor (C), a mode B (Figure 13) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the fifth heat exchanger (E5) and the fourth heat exchanger (E4), and finally flows back into the compressor (C), a mode C (Figure 14) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the fifth heat exchanger (E5), while passing through the fourth heat exchanger (E4) and the second heat exchanger (E2), and finally flows back into the compressor (C), a mode D (Figure 23) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), while passing through the first heat exchanger (E1) and the fifth heat exchanger (E5), then while passing through the fourth heat exchanger (E4) and the second heat exchanger (E2), and finally flows back into the compressor (C), a mode E (Figure 24) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), while passing through the first heat exchanger (E1) and the fourth heat exchanger (E4), then while passing through the fifth heat exchanger (E5) and the second heat exchanger (E2), and finally flows back into the compressor (C), Mode F (Figure 21), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the fourth heat exchanger (E4) and the fifth heat exchanger (E5), finally flowing back into the compressor (C), Mode G (Figure 12), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the fourth heat exchanger (E4) and the second heat exchanger (E2), finally flowing back into the compressor (C), Mode H (Figure 15), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the fourth heat exchanger (E4), passing through the fifth heat exchanger (E5) and the second heat exchanger (E2) at the same time, finally flowing back into the compressor (C), Mode I (Figure 16), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (El) and the fifth heat exchanger (E5), finally flowing back into the compressor (C), Mode J (Figure 17), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (El), passing through the fifth heat exchanger (E5) and the second heat exchanger (E2) at the same time, finally flowing back into the compressor (C), Mode K (Figure 18), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (El) and the fourth heat exchanger (E4), finally flowing back into the compressor (C), Mode L (Figure 19), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (El), passing through the fourth heat exchanger (E4) and the second heat exchanger (E2) at the same time, finally flowing back into the compressor (C), Mode M (Figure 22), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), passing through the first heat exchanger (El) and the fourth heat exchanger (E4) at the same time, then the fifth heat exchanger (E5), finally flowing back into the compressor (C), Mode N (Figure 20), in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), passing through the first heat exchanger (El) and the fifth heat exchanger (E5) at the same time, then the fourth heat exchanger (E4), finally flowing back into the compressor (C).

10. The apparatus of any of the preceding claims, wherein, the refrigeration circuit (200) comprises a third heat exchanger (E3), the third heat exchanger (E3) of the refrigeration circuit (200) comprising a first inlet / outlet (202) and a second inlet / outlet (204), the third heat exchanger (E3) being configured to heat the refrigeration fluid to a gaseous state before compression and to cool it after condensation of the refrigeration fluid.

11. The apparatus according to the preceding claim, said circulation means of the refrigeration circuit being configured to operate in at least one of the following modes: Mode A (Fig. 11), in which the refrigeration fluid is circulated along a circuit comprising at least, in this order, the compressor (C), the fifth heat exchanger (E5), the first inlet / outlet (202) of the third heat exchanger (E3), the second heat exchanger (E2) and the second inlet / outlet (204) of the third heat exchanger (E3), Mode B (Fig. 13), in which the refrigeration fluid is circulated along a circuit comprising at least, in this order, the compressor (C), the fifth heat exchanger (E5), the first inlet / outlet of the third heat exchanger (E3), the fourth heat exchanger (E4) and the second inlet / outlet (204) of the third heat exchanger (E3), Mode C (Fig. 14), in which the refrigeration fluid is circulated along a circuit comprising at least, in this order, the compressor (C), the fifth heat exchanger (E5), the first inlet / outlet of the third heat exchanger (E3), simultaneously through the fourth heat exchanger (E4) and the second heat exchanger (E2), and then the second inlet / outlet (204) of the third heat exchanger (E3), Mode D (Fig. 23), in which the refrigeration fluid is circulated along a circuit comprising at least, in this order, the compressor (C), simultaneously through the first heat exchanger (El) and the fifth heat exchanger (E5), then, in this order, the first inlet / outlet of the third heat exchanger (E3), simultaneously through the fourth heat exchanger (E4) and the second heat exchanger (E2), and then the second inlet / outlet (204) of the third heat exchanger (E3), Mode E (Fig. 24), in which the refrigeration fluid is circulated along a circuit comprising at least, in this order, the compressor (C), simultaneously through the first heat exchanger (El) and the fourth heat exchanger (E4), then, in this order, the first inlet / outlet of the third heat exchanger (E3), simultaneously through the fifth heat exchanger (E5) and the second heat exchanger (E2), and then the second inlet / outlet (204) of the third heat exchanger (E3), Mode F (Fig. 21), in which the refrigeration fluid is circulated along a circuit comprising at least, in this order, the compressor (C), the fourth heat exchanger (E4), the first inlet / outlet of the third heat exchanger (E3), the fifth heat exchanger (E5) and the second inlet / outlet (204) of the third heat exchanger (E3), Mode G (Fig. 12), in which the refrigeration fluid is circulated along a circuit comprising at least, in this order, the compressor (C), the fourth heat exchanger (E4), the first inlet / outlet of the third heat exchanger (E3), the second heat exchanger (E2) and the second inlet / outlet of the third heat exchanger (E3), - a mode H (Figure 15) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the fourth heat exchanger (E4), the first inlet / outlet of the third heat exchanger (E3), passing simultaneously through the fifth heat exchanger (E5) and the second heat exchanger (E2), then the second inlet / outlet of the third heat exchanger (E3) (204), - a mode I (Figure 16) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (E1), the first inlet / outlet of the third heat exchanger (E3), the fifth heat exchanger (E5) and the second inlet / outlet of the third heat exchanger (E3) (204), - a mode J (Figure 17) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (E1), the first inlet / outlet of the third heat exchanger (E3), passing simultaneously through the fifth heat exchanger (E5) and the second heat exchanger (E2), then the second inlet / outlet of the third heat exchanger (E3) (204), - a mode K (Figure 18) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (E1), the first inlet / outlet of the third heat exchanger (E3), the fourth heat exchanger (E4) and the second inlet / outlet of the third heat exchanger (E3) (204), - a mode L (Figure 19) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), the first heat exchanger (E1), the first inlet / outlet of the third heat exchanger (E3), passing simultaneously through the fourth heat exchanger (E4) and the second heat exchanger (E2), then the second inlet / outlet of the third heat exchanger (E3) (204), - a mode M (Figure 22) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), passing simultaneously through the first heat exchanger (E1) and the fourth heat exchanger (E4), then, in this order, the first inlet / outlet of the third heat exchanger (E3), the fifth heat exchanger (E5) and the second inlet / outlet of the third heat exchanger (E3) (204), - a mode N (Figure 20) in which the refrigeration fluid circulates along a circuit comprising at least, in this order, the compressor (C), passing simultaneously through the first heat exchanger (E1) and the fifth heat exchanger (E5), then, in this order, the first inlet / outlet of the third heat exchanger (E3), the fourth heat exchanger (E4) and the second inlet / outlet of the third heat exchanger (E3) (204).

12. A motor vehicle comprising a device according to any one of the preceding claims.

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