MULTI-POSITION VALVE HEATING / COOLING SYSTEM FOR AN ELECTRIC POWERTRAIN VEHICLE

Abstract

A heating / cooling system (IV) is fitted to a vehicle (V) comprising an electric power unit (PMU), a main battery (MB), a converter (CV), and a passenger compartment (H), and includes: - a heating / cooling circuit (HC) in which a heat transfer fluid circulates and comprising a first part (P1) coupled to the converter (CV) and power unit (PMU), and second (P2) and third (P3) parts coupled respectively to the passenger compartment (H) and the main battery (MB), and - a valve (VC) connected to the first (P1), second (P2), and third (P3) parts, and capable of selectively assuming four positions in which it allows isolated operation of at least one of the first (P1), second (P2), and third (P3) parts and / or coupling between at least two of these (P1, P2, P3) to heat / cool the passenger compartment (H) and / or the main battery (MB), and / or cool the converter (CV) and motive machine (MME).Figure 1.

Description

Title of the invention: MULTI-POSITION VALVE HEATING / COOLING SYSTEM FOR AN ELECTRIC POWERTRAIN VEHICLE Technical field of the invention

[0001] The invention relates to vehicles comprising an electric powertrain and a passenger compartment, and more specifically to heating / cooling systems which are responsible for heating / cooling equipment and the air in the passenger compartment of such vehicles. State of the art

[0002] Certain vehicles, possibly land vehicles (and for example of the motor vehicle type), include:

[0003] - a powertrain (or PWM) said to be all-electric, and therefore comprising at minus an electric motive machine capable of providing the motor torque to move them from electrical energy stored in a main (or power) battery,

[0004] - a converter suitable for converting electrical energy stored in this main battery, for example to supply electrical power to an on-board network,

[0005] - a passenger compartment with controlled aerothermal temperature, and

[0006] - a heating / cooling installation designed to heat / cool the air of the passenger compartment and equipment (including the electric drive unit, the main battery and the converter).

[0007] Some of these heating / cooling systems include a heating / cooling circuit in which a heat transfer fluid circulates and which has a first part coupled to the converter and the drive machine, and second and third parts coupled respectively to the passenger compartment and the main battery.

[0008] The first part of the heating / cooling circuit, dedicated to the converter and the drive machine, usually comprises:

[0009] - a first heat transfer fluid pump to circulate the latter locally,

[0010] - a first temperature probe for measuring the local temperature of the fluid heat transfer fluid, and

[0011] - a radiator for cooling the local heat transfer fluid.

[0012] The second part of the heating / cooling circuit, dedicated to the passenger compartment, usually comprises:

[0013] - a first two-way type solenoid valve allowing it to be isolated or from the to be combined with the first part and / or the third part,

[0014] - a second heat transfer fluid pump to circulate the latter locally,

[0015] - a second temperature probe for measuring the local temperature of the fluid heat transfer fluid,

[0016] - a heating device (generally a heating element) for heating locally the heat transfer fluid, and

[0017] - a first heat exchanger for cooling / heating air intended for the passenger compartment by exchange with the heat transfer fluid.

[0018] The third part of the heating / cooling circuit, dedicated to the main battery, usually comprises:

[0019] - a second three-way solenoid valve allowing it to be isolated or connected to the to be combined with the first part and / or the second part,

[0020] - a third heat transfer fluid pump to circulate the latter locally,

[0021] - a third temperature probe for measuring the local temperature of the fluid heat transfer fluid, and

[0022] - a second heat exchanger to locally cool the heat transfer fluid by exchange with a refrigerant from an air conditioning compressor.

[0023] By controlling the two valves, the second heat exchanger can be used to cool the converter and the drive machine, and / or the heating device to heat the main battery.

[0024] This heating / cooling system comprises numerous components that must be connected by many pipes, requiring a significant amount of heat transfer fluid, which adds to the overall weight. Furthermore, this heating / cooling system is very complex in its design and bulky, making it difficult to install in a vehicle. Finally, this heating / cooling system is expensive to manufacture, install, and maintain.

[0025] The invention therefore aims in particular to improve the situation. Presentation of the invention

[0026] It proposes in particular for this purpose a heating / cooling installation, on the one hand, intended to equip a vehicle comprising an electric drive machine, a main battery for supplying electrical energy to this drive machine, a converter for converting electrical energy stored in this main battery, and a passenger compartment, and, on the other hand, comprising a heating / cooling circuit in which a heat transfer fluid circulates and comprising a first part coupled to the converter and drive machine, and second and third parts coupled respectively to the passenger compartment and the main battery.

[0027] This heating / cooling installation is characterized by the fact that it also includes a valve connected to the first, second and third parts, and capable of selectively taking one of at least four positions in which it allows isolated operation of at least one of the first, second and third parts and / or a coupling between at least two of the first, second and third parts to heat / cool the passenger compartment and / or the main battery, and / or cool the converter and engine.

[0028] The use of this single multi-position valve makes it possible to significantly reduce the number of pipes interconnecting the equipment of the installation (heating / cooling) and in which the heat transfer fluid circulates, and therefore to significantly reduce the quantity of heat transfer fluid and consequently the weight of the heating / cooling circuit, but also to simplify the architecture of the installation and the assembly of the latter in a vehicle, as well as to reduce the size of the heating / cooling circuit.

[0029] The heating / cooling installation according to the invention may include other features which may be taken separately or in combination, and in particular:

[0030] - its valve may be adapted to selectively take, on the first hand, a first position coupling the second and third parts to heat / cool the passenger compartment and / or the main battery, secondly, a second position in which the heat transfer fluid circulates in the second part to heat the passenger compartment and / or in the first part to cool the engine and the converter, thirdly, a third position coupling the first, second and third parts in pairs to heat the main battery, and fourthly, a fourth position coupling the first and second parts to heat the passenger compartment;

[0031] - in the presence of the first option, its valve may include first and second inlets and a first outlet connected to the first part, a third inlet and a second outlet connected to the second part, and a fourth inlet and a third outlet connected to the third part. In this case the valve can be arranged, firstly, in the first position so as to couple the first inlet to the first outlet, the third inlet to the third outlet and the fourth inlet to the second outlet, secondly, in the second position so as to couple the first inlet to the first outlet and the third inlet to the second outlet, thirdly, in the third position so as to couple the second inlet to the second outlet, the third inlet to the third outlet and the fourth inlet to the first outlet, and fourthly, in the fourth position so as to couple the second inlet to the second outlet and the third inlet to the first outlet;

[0032] - it may include a first pump suitable for circulating the fluid heat transfer fluid in the first part, and a second pump to circulate the heat transfer fluid in the second and third parts;

[0033] - in the presence of the last option and the last sub-sub-option, the first pump can be inserted between the first outlet and the first part, and the second pump can be inserted between the second outlet and the second part;

[0034] - also in the presence of the last sub-option, it may include a housing degassing coupled to the first part in order to allow degassing of the latter. In this case, its valve may include a degassing inlet connected to this degassing box and suitable for being coupled to the second outlet in order to allow degassing of the second part and / or the third part;

[0035] - the first part may include a radiator suitable for cooling the fluid heat transfer fluid before it reaches the valve;

[0036] - the second part may comprise, firstly, a heating device a first heat exchanger suitable for heating the heat transfer fluid exiting the valve and entering the second part, a second heat exchanger suitable for cooling the heat transfer fluid exiting the valve and entering the second part, and a third heat exchanger installed downstream of the first exchanger, in which the heat transfer fluid that has passed through the latter circulates and suitable for heating / cooling air intended for the passenger compartment by exchange with the heat transfer fluid.

[0037] The invention also proposes a vehicle, possibly of the automobile type, comprising:

[0038] - an electric drive machine, a main battery suitable for powering electrical energy for this motive machine,

[0039] - a converter suitable for converting electrical energy stored in the battery main,

[0040] - a passenger compartment,

[0041] - and a heating / cooling installation of the type shown above. Brief description of the figures

[0042] Other features and advantages of the invention will become apparent from an examination of the detailed description below, and the accompanying drawings, in which:

[0043] [Fig. 1] schematically and functionally illustrates an example of the realization of a vehicle comprising a passenger compartment, an electric powertrain associated with a main battery, also associated with a converter, and a heating / cooling system according to the invention,

[0044] [Fig.2] schematically and functionally illustrates an example of an embodiment of a heating / cooling installation according to the invention, with its multi-position valve placed in a first position,

[0045] [Fig.3] schematically and functionally illustrates an example of an embodiment of a heating / cooling installation according to the invention, with its multi-position valve placed in a second position,

[0046] [Fig.4] schematically and functionally illustrates an example of an embodiment of a heating / cooling installation according to the invention, with its multi-position valve placed in a third position, and

[0047] [Fig.5] schematically and functionally illustrates an example of an embodiment of a heating / cooling installation according to the invention, with its multi-position valve placed in a fourth position. Detailed description of the invention

[0048] The invention aims in particular to provide a heating / cooling installation IV with a simplified architecture and intended to equip a vehicle V with an electric powertrain (or GMP).

[0049] In what follows, vehicle V is considered, by way of non-limiting example, to be of the automobile type. This is, for example, a car, as illustrated in [Fig. 1]. But the invention is not limited to this type of vehicle. It relates in fact to any type of vehicle (land, sea (or river) or air) comprising an electric powertrain (or PPM) (and therefore comprising at least one electric drive unit capable of providing the torque to propel it), a main battery capable of supplying electrical energy to this electric drive unit, a converter capable of converting electrical energy stored in this main battery, and a passenger compartment.

[0050] A vehicle V comprising a passenger compartment H, an electric GMP transmission chain (and therefore comprising at least one electric drive machine MME), a service battery BS, a main battery BP, a CV converter, and a heating / cooling system IV according to the invention is schematically represented in [Fig.1].

[0051] The auxiliary battery BS is responsible for supplying electrical power to an on-board network RB of the vehicle V, supplementing that supplied by the converter CV, which is powered by the main (or power) battery BP via a main electrical circuit, and sometimes replacing this converter CV. For example, this auxiliary battery BS may be configured as a very low voltage type battery (typically 12 V, 24 V, or 48 V). It is rechargeable at least by the converter CV. In the following, we consider, as a non-limiting example, that the BS service battery is of the 12 V Lithium-ion type.

[0052] The RB on-board network is an electrical power supply network to which electrical (or electronic) equipment (or components) that consume electrical energy are coupled.

[0053] The main electrical circuit (or "high voltage" or "power" circuit) is connected, on the one hand, to the main battery BP via an interface device, and, on the other hand, to electronic equipment, such as the CV converter and the MME drive unit. It also allows the main battery BP to be recharged by an external power source temporarily connected to the vehicle V.

[0054] The transmission chain has a powertrain that is purely electric and therefore includes, in particular, in addition to its (electric) drive machine MME, a drive shaft AMI, and a transmission shaft ATI. Here, "electric drive machine" means an electric machine arranged to provide torque to move the vehicle V, and possibly to recover regenerative torque.

[0055] The drive unit MME (here an electric motor) is connected to the main battery BP via the main electrical circuit, in order to be supplied with electrical energy, and also possibly to supply this main battery BP with electrical energy, for example during a regenerative braking phase. It is connected to the drive shaft AMI, to provide it with torque by rotational drive. This drive shaft AMI is connected to a reduction gear RDI which is also connected to the transmission shaft ATI, itself connected to a first set of wheels Tl, preferably via a differential DV.

[0056] This first train Tl is located here in the front part PVV of the vehicle V. But in a variant this first train Tl could be the one which is here referenced T2 and which is located in the rear part PRV of the vehicle V.

[0057] The CV converter is, for example, of the DC / DC type (“Direct Current / Direct Current”). It is therefore responsible for converting a direct current from a first voltage to a second voltage.

[0058] This CV converter is also responsible, here, during the driving phases of vehicle V, for converting a portion of the electrical current stored in the main battery BP to supply converted electrical current to the vehicle's electrical system RB and the auxiliary battery BS (for recharging it). It is also, here, electrically connected, via the main electrical circuit, to the charging connector of vehicle V, which, during a charging phase of the main battery BP, is intended to be temporarily connected to an external power source to vehicle V, via a charging cable.

[0059] It will be noted, as illustrated non-limitingly in [Fig. 1], that the CV converter can be part of an internal CH charger also comprising a computer responsible, at least, for controlling the charging of the main battery BP.

[0060] The main (or power or traction) battery BP may, for example, include electrical energy storage cells, possibly electrochemical (for example, lithium-ion (or Li-ion) or Ni-MH or Ni-Cd type). Also, for example, the main battery BP may be of the low-voltage type (typically 450 V, by way of illustration). But it could also be of the medium-voltage or high-voltage type.

[0061] It should also be noted that in the example illustrated, but not limited to, in [Fig. 1], the vehicle V also includes a distribution box BD to which the auxiliary battery BS, the converter CV, and the on-board network RB are coupled. This distribution box BD is responsible for distributing the electrical energy produced by the converter CV or stored in the auxiliary battery BS into the on-board network RB to power the electrical components (or equipment) connected to the on-board network RB, according to the power demands received.

[0062] As illustrated in Figures 1 to 5, the heating / cooling installation IV according to the invention comprises a heating / cooling circuit CR in which a heat transfer fluid circulates and comprising first PI, second P2 and third P3 parts and a (multi-position) valve VC.

[0063] The first PI part is coupled to the CV converter and the MME drive machine, in order to cool them if necessary.

[0064] The second part P2 is coupled to the passenger compartment H in order to supply it with treated air.

[0065] The third part P3 is coupled to the main battery BP, in order to heat it or Cool if necessary.

[0066] The (multi-position) valve VC is connected to each of the first PI, second P2 and third P3 parts. In addition, it is arranged so as to selectively take one of at least four positions in which it allows isolated operation of at least one of the first PI, second P2 and third P3 parts and / or coupling between at least two of the first PI, second P2 and third P3 parts to heat / cool the passenger compartment H and / or the main battery BP, and / or cool the CV converter and the MME engine.

[0067] Herein, "isolated operation" means operation in which a portion of the heat transfer fluid circulates only in one section Pj (with j = 1 to 3) in a closed circuit, independently of what happens in the other two sections Pj' (j' j). Furthermore, "coupling" means that at least a portion of the heat transfer fluid circulates in at least two sections Pj (with j = 1 to 3) temporarily connections made to form a closed circuit, independently of what happens in a possible other part Pj' (j' j).

[0068] Furthermore, here we mean "selectively taking" the fact of being placed in a position which is chosen either by a user of the vehicle V by action on at least one control element or selection of a menu displayed on a screen, for example of a central combination installed in or on the dashboard of the vehicle V, or by a computer, such as for example the CS supervision computer which supervises the operation of the installation IV.

[0069] Thanks to the use of this single VC valve offering at least four different positions, the number of pipes interconnecting the equipment of the (heating / cooling) system IV and through which the heat transfer fluid circulates can be significantly reduced, thereby significantly reducing the quantity of heat transfer fluid and thus the weight of the heating / cooling circuit CR. Furthermore, this reduces the number of components in system IV and the complexity of its architecture, as well as its manufacturing cost. In addition, it reduces the overall size of the heating / cooling circuit CR. Finally, system IV is easier to install and maintain in a vehicle, thereby reducing the vehicle's cost.

[0070] For example, and as illustrated without limitation in Figures 2 to 5, the VC valve can be arranged to selectively take:

[0071] - a first position which couples the second P2 and third P3 parts to heating or cooling (heating / cooling) the passenger compartment H and / or the main battery BP (see [Fig.2]), or

[0072] - a second position in which the heat transfer fluid circulates in the second part P2 to heat the passenger compartment H and / or in the first part PI to cool the engine MME and the CV converter (see [Fig.3]), or

[0073] - a third position which pairs the first PI, second P2 and third P3 parts to heat the main BP battery (see [Fig.4]), or

[0074] - a fourth position which couples the first PI and second P2 parts to heat the passenger compartment H (see [Fig.5]).

[0075] For example, the selective placement of the VC valve in one of its positions can be supervised by the CS supervisory computer.

[0076] As illustrated in [Fig. 2], the first position of the VC valve can allow the second P2 and third P3 parts to operate in a coupled and closed circuit to heat the passenger compartment H and / or the main battery BP by heating a portion of the heat transfer fluid using a DC heating device, for example, part of the second part P2, and / or to cool the main battery BP by cooling a portion of the heat transfer fluid using a first Heat exchanger EC1, for example, is part of the second part P2. Note that the heating of the passenger compartment H is done with air heated by heat exchange at the level of a second heat exchanger EC2 in which the heated part of the heat transfer fluid circulates and is, for example, part of the second part P2, while the heating of the main battery BP is done exclusively by means of the heated part of the heat transfer fluid.

[0077] This first position of the VC valve can also, optionally, allow the first PI section to operate in a closed loop to cool the MME drive machine and the CV converter by cooling a portion of the heat transfer fluid using a radiator RI that is part of the first PI section. It will be understood that this radiator RI is designed to cool the heat transfer fluid before it reaches the VC valve, for example, upon command from the CS supervisory control unit.

[0078] It will be understood that in the example illustrated, but not limited to, in Figures 2 to 5:

[0079] - the DC heating device is suitable for heating the heat transfer fluid that exits the VC valve and enters the second part P2,

[0080] - the first heat exchanger EC1 is suitable for cooling the heat transfer fluid which exits the VC valve and enters the second part P2, and is installed downstream of the DC heating device (although it could be installed upstream of the latter (DC)), and

[0081] - the second heat exchanger EC2 is installed downstream of the first heat exchanger EC1, allows the circulation of the heat transfer fluid which has passed through the latter (EC1) and is suitable for heating / cooling the air which is intended for the passenger compartment H by exchange with the heat transfer fluid which has just been heated by the heating device DC or which has just been cooled by the first exchanger EC1.

[0082] For example, the respective operations of the DC heating device, first heat exchanger EC1 and second heat exchanger EC2 can be supervised by the CS supervision computer.

[0083] As illustrated in [Fig.3], the second position of the VC valve can allow the second part P2 to operate in a closed circuit to heat the passenger compartment H by heating a portion of the heat transfer fluid by means of a DC heating device, for example, part of the second part P2, then heating the air intended for the passenger compartment H by heat exchange at the level of a second heat exchanger EC2 in which the heated portion of the heat transfer fluid circulates and which, for example, is part of the second part P2.

[0084] This second position of the VC valve can also, optionally, allow the first PI section to operate in a closed circuit to cool the machine MME engine and CV converter thanks to the cooling of a part of the heat transfer fluid by means of the RI radiator which is part, here, of the first part PI.

[0085] As illustrated in [Fig.4], the third position of the VC valve can allow the first PI, second P2 and third P3 parts to operate in a coupled and closed circuit to heat the main battery BP by means of heating the heat transfer fluid by means of a DC heating device, for example, part of the second part P2 and / or calories captured at the level of the drive machine MME and the CV converter.

[0086] As illustrated in [Fig.5], the fourth position of the VC valve can allow the first PI and second P2 parts to operate in a coupled and closed circuit to heat the passenger compartment H by means of heating a part of the heat transfer fluid by means of a DC heating device, for example, part of the second part P2 and / or calories captured at the level of the drive machine MME and the CV converter.

[0087] In order to allow obtaining at least the four positions described above, the VC valve may include at least four inlets Ek (k = 1 to 4) and at least three outlets Sm (m = 1 to 3), as illustrated non-limitingly in Figures 2 to 5.

[0088] The first El (k = 1) and second E2 (k = 2) inputs and the first output SI (m = 1) are connected to the first part PI.

[0089] The third input E3 (k = 3) and the second output S2 (m = 2) are connected to the second part P2.

[0090] The fourth input E4 (k = 4) and the third output S3 (m = 3) are connected to the third part P3.

[0091] Furthermore, the VC valve is arranged:

[0092] - in the first position so as to couple the first input El to the first output SI (to put the first part PI in a closed circuit via the radiator RI whose output is here coupled to the first input El), the third input E3 to the third output S3 and the fourth input E4 to the second output S2 (to put the second P2 and third P3 parts in a coupled and closed circuit),

[0093] - in the second position so as to couple the first input El to the first output SI (to put the first part PI in a closed circuit via the heatsink RI), and the third input E3 to the second output S2 (to put the second part P2 in a closed circuit),

[0094] - in the third position so as to couple the second input E2 to the second output S2, third input E3 to third output S3 and fourth input E4 to first output SI (to put the first PI, second P2 and third P3 parts in a coupled and closed circuit, without going through the heatsink RI), and

[0095] - in the fourth position so as to couple the second input E2 to the second output S2 and third input E3 to first output SI (to put the first PI and second P2 parts in coupled and closed circuit, without going through the radiator RI).

[0096] It should be noted that when an Ek inlet or an Sm outlet is not used in a position of the VC valve, this means that it is disconnected (or sealed tightly).

[0097] For example, and as illustrated without limitation in Figures 2 to 5, the installation IV may include first PF1 and second PF2 heat transfer fluid pumps. In this case, the first pump PF1 may be suitable for circulating the heat transfer fluid in the first section PI, and the second pump PF2 may be suitable for circulating the heat transfer fluid in the second section P2 and the third section P3.

[0098] Also, for example, and as illustrated, but not limited to, in Figures 2 to 5, the first pump PF1 can be inserted between the first outlet SI and the first section PI, and the second pump PF2 can be inserted between the second outlet S2 and the second section P2. In this case, the valve VC and the first PF1 and second PF2 pumps (with heat transfer fluid) can optionally be part of an "all-in-one" control module MC, as illustrated, but not limited to, in Figures 2 to 5. This advantageously allows for a further reduction in the number of devices, the size, and the complexity of the system architecture IV. However, this is not mandatory. Indeed, the first pump PF1 could be part of the first section PI, and the second pump PF2 could be part of the second section P2.

[0099] Also, for example, and as illustrated, but not limited to, in Figures 2 to 5, the installation IV may include a degassing box BDZ coupled to the first section PI to allow degassing of the latter (PI). In this case, the valve VC may also include a degassing inlet E5 (k = 5) which is connected to the degassing box BDZ and designed to be coupled to the second outlet S2 to allow degassing of the second section P2 and / or the third section P3. It should be noted that this coupling between the degassing inlet E5 and the second outlet S2 may optionally be permanent.

[0100] Also, for example, and as illustrated non-limitingly in Figures 2 to 5, the heating / cooling circuit CR may include a first temperature probe STI to measure the temperature of the heat transfer fluid in its first part PI (preferably at its inlet), a second temperature probe ST2 to measure the temperature of the heat transfer fluid in its second part P2 (preferably at its inlet), and a third temperature probe ST3 to measure the temperature of the heat transfer fluid in its third part P3 (preferably upstream of the main coil BP).

[0101] It should also be noted that in order for the CS supervisory computer to perform all the aforementioned supervision functions, it may include at least one first processor, for example a digital signal processor (or DSP), and at least one memory. It can therefore be implemented as a combination of electrical or electronic circuits or components (or "hardware") and software modules (or "software").

[0102] The memory is random access memory (RAM) to store instructions for the processor to implement at least one computer program. The first processor may comprise integrated circuits (or printed circuit boards), or several integrated circuits (or printed circuit boards) connected by wired or wireless connections. An integrated circuit (or printed circuit board) is defined as any type of device capable of performing at least one electrical or electronic operation.

[0103] It should also be noted that the CS supervisory computer may also include:

[0104] - mass storage, in particular for storing any data intermediaries involved in all its calculations and processing,

[0105] - an input interface for receiving instructions (or requests) for the to use in calculations or processing, possibly after having formatted and / or demodulated and / or amplified their contents, in a manner known per se, by means of a second digital signal processor, and

[0106] - an output interface, in particular for delivering commands defining the next position of the VC valve and the respective operating states of the RI radiator, DC heating device, first heat exchanger EC1 and second heat exchanger EC2.

Claims

1.

2. Demands Heating / cooling installation (IV) for a vehicle (V) comprising an electric power unit (MU), a main battery (MB) for supplying electrical energy to said power unit (MU), a converter (CV) for converting electrical energy stored in said main battery (MB), and a passenger compartment (H), said installation (IV) comprising a heating / cooling circuit (HC) in which a heat transfer fluid circulates and comprising a first part (P1) coupled to said converter (CV) and power unit (MU), and second (P2) and third (P3) parts coupled respectively to said passenger compartment (H) and to said main battery (MB), characterized in that it further comprises a valve (VC) connected to said first (P1), second (P2) and third (P3) parts, and capable of selectively assuming one of at least four positions in which it allows isolated operation from at least one of said first (P1),second (P2) and third (P3) parts and / or a coupling between at least two of said first (PI), second (P2) and third (P3) parts for heating / cooling said passenger compartment (H) and / or said main battery (BP), and / or cooling said converter (CV) and engine (MME), said second part (P2) comprising i) a heating device (DC) suitable for heating said heat transfer fluid exiting said valve (VC) and entering said second part (P2), ii) a first heat exchanger (EC1) suitable for cooling said heat transfer fluid exiting said valve (VC) and entering said second part (P2), and iii) a second heat exchanger (EC2) installed downstream of said first exchanger (EC1), through which circulates said heat transfer fluid having passed through the latter (EC1) and suitable for heating / cooling air intended for said passenger compartment (H) by exchange with said heat transfer fluid. An installation according to claim 1, characterized in that said valve (VC) is adapted to selectively assume a) a first position coupling said second (P2) and third (P3) parts to heat / cool said passenger compartment (H) and / or said main battery (BP), b) a second position in which said heat transfer fluid circulates in said second part (P2) to heat said passenger compartment (H) and / or in said first part (P3) to to cool said motive machine (MME) and said converter (CV), c) a third position coupling said first (PI), second (P2) and third (P3) parts in pairs to heat said main battery (BP), and d) a fourth position coupling said first (PI) and second (P2) parts to heat said passenger compartment (H).

3. Installation according to claim 2, characterized in that said valve (VC) comprises first (El) and second (E2) inlets and a first outlet (SI) connected to said first part (PI), a third inlet (E3) and a second outlet (S2) connected to said second part (P2), and a fourth inlet (E4) and a third outlet (S3) connected to said third part (P3), and is arranged a) in said first position so as to couple said first inlet (El) to said first outlet (SI), said third inlet (E3) to said third outlet (S3) and said fourth inlet (E4) to said second outlet (S2), b) in said second position so as to couple said first inlet (El) to said first outlet (SI) and said third inlet (E3) to said second outlet (S2), c) in said third position so as to couple said second inlet (E2) to said second outlet (S2),said third input (E3) to said third output (S3) and said fourth input (E4) to said first output (SI), and d) in said fourth position so as to couple said second input (E2) to said second output (S2) and said third input (E3) to said first output (SI).

4. Installation according to claim 3, characterized in that it comprises a degassing box (BDZ) coupled to said first part (PI) in order to allow degassing of the latter (PI), and in that said valve (VC) comprises a degassing inlet (E5) connected to said degassing box (BDZ) and suitable to be coupled to said second outlet (S2) in order to allow degassing of said second part (P2) and / or said third part (P3).

5. Installation according to any one of claims 1 to 4, characterized in that it comprises i) a first pump (PF1) suitable for circulating said heat transfer fluid in said first part (PI), and ii) a second pump (PF2) suitable for circulating said heat transfer fluid in said second part (P2) and said third part (P3).

6. Installation according to the combination of claims 3 and 5, characterized in that said first pump (PF1) is intercalated between said first outlet (SI) and said first part (PI), and in that said second pump (PF2) is intercalated between said second outlet (S2) and said second part (P2).

7. Installation according to any one of claims 1 to 6, characterized in that said first part (PI) comprises a radiator (RI) suitable for cooling said heat transfer fluid before it reaches said valve (VC).

8. Vehicle (V) comprising an electric drive machine (EMM), a main battery (MB) for supplying electrical energy to said drive machine (EMM), a converter (CV) for converting electrical energy stored in said main battery (MB), and a passenger compartment (H), characterized in that it further comprises a heating / cooling installation (IV) according to any one of claims 1 to 7.

9. Vehicle according to claim 8, characterized in that it is of the automobile type.

Images