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WO2015010909A1 - Thermal conditioning device for a motor vehicle comprising an electric machine used for driving said vehicle - Google Patents

Thermal conditioning device for a motor vehicle comprising an electric machine used for driving said vehicle Download PDF

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Publication number
WO2015010909A1
WO2015010909A1 PCT/EP2014/064740 EP2014064740W WO2015010909A1 WO 2015010909 A1 WO2015010909 A1 WO 2015010909A1 EP 2014064740 W EP2014064740 W EP 2014064740W WO 2015010909 A1 WO2015010909 A1 WO 2015010909A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
heat
refrigerant
exchanger
refrigerant circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2014/064740
Other languages
French (fr)
Inventor
Mohamed Yahia
Bertrand Nicolas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of WO2015010909A1 publication Critical patent/WO2015010909A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899—Controlling the flow of liquid in a heat pump system
    • B60H1/00921—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00949—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising additional heating/cooling sources, e.g. second evaporator

Definitions

  • the invention relates to a thermal conditioning device for a motor vehicle comprising an electric machine for driving said vehicle.
  • the battery used to power the electrical machine must be maintained at a certain temperature to operate optimally in terms of load level and life.
  • thermal regulation problems to be dealt with involve many parameters and the solutions proposed until now are complex and / or of limited performance.
  • the invention aims to solve the above problems and proposes for this purpose a thermal conditioning device for a motor vehicle comprising an electric machine for driving said vehicle, said device comprising:
  • a refrigerant circuit intended at least for conditioning a passenger compartment of the vehicle, comprising a heat exchanger intended to operate as a condenser for heating a flow of air flowing towards said passenger compartment,
  • a second heat transfer fluid circuit intended for thermal regulation of a component of a supply circuit, in particular a power supply battery, of said electric machine
  • a heat exchanger said heat exchanger / coolant heat exchanger, allowing a first heat exchange between said refrigerant circuit and said second circuit, said circuits being configured to operate said heat exchanger / coolant at least in a cooler; cooling said heat transfer fluid with said refrigerant.
  • the invention thus proposes a more comprehensive approach to improve performance while limiting complexity, including allowing the use of a heat pump effect for a heating of the passenger compartment. It also allows cooling of the battery from the air conditioning circuit. They also offer many potentialities through
  • said second circuit comprises a pump
  • said pump is located on a branch provided with said component of the power supply circuit of the electric machine
  • said second circuit further comprises a bypass branch of said component of the supply circuit of the electric machine
  • bypass branch is provided with a valve, advantageously with an adjustable flow rate
  • Said second circuit is further configured to loop said heat transfer fluid through said component of the power supply circuit of the electric machine and said bypass branch with the aid of said pump,
  • said first circuit comprises a heat exchanger, said first front-face exchanger, said device being configured so that said first
  • said first circuit is configured to further cool other electrical components of the vehicle
  • said refrigerant circuit comprises a heat exchanger, said second front-face exchanger, said device being configured so that said second front-face exchanger exchanges heat with said external air flow,
  • said second front-face exchanger is able to operate in a condenser and / or in an evaporator
  • said refrigerant circuit comprises a first branch, provided with said second front-face exchanger, and a second branch, provided with said exchanger capable of operating as a condenser, said first and second branches of said refrigerant circuit being connected in a shunt between a second branch; o output of a compressor of said refrigerant circuit and a node of said refrigerant circuit,
  • said refrigerant circuit comprises a storage tank for said refrigerant fluid, said device being configured to circulate said refrigerant fluid in said storage tank from said common node between
  • said refrigerant circuit comprises a third branch, provided with a heat exchanger, configured to cool the passenger compartment of the vehicle, said third branch being mounted between an inlet of the compressor and said node of the refrigerant circuit,
  • Said refrigerant circuit comprises a fourth branch provided with said heat exchanger / coolant, said fourth branch being mounted in branch of said third branch, between the inlet of the compressor and said node of the refrigerant circuit,
  • said refrigerant circuit comprises a fifth branch making it possible to connect an inlet of said compressor and said second front-face exchanger, said refrigerant circuit being further configured to allow, in a first configuration of said refrigerant circuit, the circulation said coolant in a first direction through said second front-end exchanger, bypassing said fifth leg, and in a second
  • said refrigerant circuit comprises an accumulator at the inlet of compressor
  • said refrigerant circuit is configured to allow independent circulation of said refrigerant fluid in said second, third and fourth branches of said refrigerant circuit.
  • said first and second circuits are independent.
  • said first and second circuits are interconnected.
  • said first and second circuits comprise a first branch provided with said electrical machine and a second branch provided with said component of the supply circuit of said electric machine, said branches being mounted in shunt of said first front-face exchanger.
  • Said first branch comprises a pump of the first circuit
  • said first and second circuits are configured to allow a loop circulation of said coolant between said first branch and all or part of said second circuit
  • said first branch further comprises a heat generator
  • said heat generator comprises an electrical resistance, configured to be powered by said electrical machine operating as a generator during
  • said first and second circuits are configured so that said heat generator and said storage device are traversed in series in this order by said heat transfer fluid.
  • FIG. 1 is a schematic view illustrating a first exemplary embodiment of the device according to the invention
  • FIG. 2 illustrates a first variant embodiment of said device
  • FIG. 3 illustrates a second variant embodiment of said device
  • FIG. 4 illustrates a third embodiment of said device.
  • the invention relates to a thermal conditioning device for a motor vehicle comprising an electric machine 1 for driving said vehicle.
  • the invention is intended for vehicles, said electric or hybrid, using a traction system and / or propulsion of the vehicle comprising an electric machine instead of or in addition to the heat engine traditionally used.
  • Said traction and / or propulsion chain is in particular configured to transmit a torque
  • One or more cooling modes of electrical components such as said electrical machine and / or components related to the operation of said electrical machine, such as its battery,
  • One or more heat pump modes for heating, the passenger compartment of the vehicle and / or said electrical components.
  • Said device comprises three circuits, namely:
  • a circuit 2 for refrigerant fluid intended at least for conditioning a passenger compartment of the vehicle, comprising a heat exchanger 22 intended to operate as a condenser for heating a flow of air flowing towards said passenger compartment,
  • a second heat transfer fluid circuit 4 intended for thermal regulation of a component s of a supply circuit for said electric machine 1, in especially its battery power supply.
  • Said coolant is a fluid intended to change phases under the conditions of temperature and operating pressure of the refrigerant circuit. This is, for example, the fluid known as R134 or R1234yf. Said coolant is, for example, a liquid, especially a mixture of water and antifreeze, in particular glycol.
  • said first circuit 3 may be configured to cool other components 6, 8 of the vehicle.
  • these are electrical components, that is to say components which generate heat by the Joule effect such as said electric machine 1 and / or said battery 5.
  • electronic control module 6 for controlling said electrical machine and / or associated electrical circuit (s) and / or an electronic control module of an air conditioning installation of the passenger compartment of the vehicle, said conditioning installation comprising said 15 circuit 2 air conditioning.
  • Said electrical machine 1 and said other components 6, 8 are here mounted in parallel on two parallel branches 10, 12 of the first circuit 3. Said other components 6, 8 are mounted in series on one of said branches and the machine 1 is mounted on the other 12 of said branches.
  • Said first circuit 3 may further comprise a heat exchanger 14, said first front-end exchanger. Said device is configured so that said first front-face exchanger 14 exchanges heat with an external airflow FE. Said first circuit 3 further comprises a pump 16 for driving said heat transfer liquid in said first circuit 3.
  • a first node 18 of said two parallel branches 10, 12 is connected to an output of said pump 16.
  • a second node 21 of said two parallel branches 10, 12, opposite to the first node 18, is connected to said first front-face exchanger 14. The latter is connected to the inlet of said pump 16.
  • said coolant circulates in series from said pump 16 through
  • Said device in particular said second circuit 4, further comprises a heat exchanger 26, said heat exchanger / coolant, allowing a first exchange of heat between said refrigerant circuit 2 and said second circuit 4.
  • Said circuits 2, 3, 4, in particular said refrigerant circuit 2 and said second circuit 4 are further configured to operate said first heat exchanger refrigerant 26 at least in a cooler so as to cool said coolant with said refrigerant.
  • Said second circuit 4 here comprises a pump 36.
  • the heat transfer fluid travels the second circuit 4 from the pump 36 through said component 5 of the supply circuit of the electric machine 1 and said heat exchanger / coolant heat exchanger 26. It comprises in addition to a valve 42 between said heat exchanger / coolant heat exchanger and an inlet of said pump 36.
  • Said refrigerant circuit 2 is intended at least for a conditioning of a passenger compartment of the vehicle. It includes here for this, in addition to the heat exchanger 22 capable of operating in the condenser and the heat exchanger / refrigerant 26, a heat exchanger 44, said second front-end heat exchanger.
  • Said device is configured so that said second front-face exchanger 44 exchanges heat with said external airflow FE.
  • Said first 14 and second 44 front-face exchangers are here connected in series according to the flow direction of the air flow FE, said second front-face exchanger 44 being intended to be traversed first by said external air flow FE.
  • Said refrigerant circuit 2 comprises a first branch 46, provided with said second front-face exchanger 44, and a second branch 48, provided with said exchanger capable of operating as a condenser 22.
  • Said first 46 and second 48 branches of said refrigerant circuit 2 are mounted in shunt between an outlet 52 of a compressor 50 of said fluid circuit 2
  • Said refrigerant circuit 2 here comprises a third branch 54, provided with a heat exchanger 56, in particular an evaporator, configured to cool the passenger compartment of the vehicle.
  • Said third branch is mounted between an inlet 60 of the compressor and the node 53 of the refrigerant circuit 2, that is,
  • the heat / coolant heat exchanger 26 is advantageously located on a fourth branch 58 mounted as a branch of said third branch, i.e., between the inlet 60 of the compressor and the node 53 of the refrigerant circuit 2.
  • Said refrigerant circuit 2 may further comprise an accumulator 62 of said refrigerant at the inlet of the compressor 50.
  • Said second front-face exchanger 44 is advantageously capable of operating as a condenser and / or an evaporator.
  • said refrigerant circuit 2 here comprises a fifth branch 64 for connecting the inlet of the accumulator 64 and said second front-face exchanger 44.
  • Said refrigerant circuit 2 is further configured to allow:
  • Such a configuration of the refrigerant circuit is particularly advantageous in that it allows a continuity of the refrigerant state. More specifically, at the node 53 of said refrigerant circuit, said fluid will be in the liquid phase whether one is in cooling mode or in heat pump mode. Fashion changes will be facilitated.
  • Said refrigerant circuit may more specifically comprise a first valve 66, located on the first branch 46 of said refrigerant circuit 2 and / or a second valve 68, located on the second branch 48 of said refrigerant circuit 2, here in FIG. compressor outlet 50. It further comprises o a third valve 70 on said fifth branch 64.
  • a pressure reducer 74 may be mounted in parallel with the non-return valve 72a of said first branch 46 of the circuit 2 refrigerant.
  • Said refrigerant circuit 2 is furthermore here configured to allow independent circulation of said refrigerant fluid in said first 46, second 48, third 54 and fourth 58 branches of said refrigerant circuit 2, in particular via said valves 66, 68, mentioned above and / or valves 76, 78 located on said third 54 and fourth 58 branches of the refrigerant circuit 2, in particular on the side of said node 53 common to said first 46 and second 48 branches of the fluid circuit 2 refrigerant.
  • Said heat exchanger 56 configured to cool the passenger compartment of the vehicle, may be associated with said exchanger 22 able to operate in
  • Said device may furthermore comprise, in particular in said air conditioning box, an air heater 57, in particular located between said evaporator 56 and said exchanger able to operate.
  • said first and second circuits 3, 4 are independent. As illustrated in the following figures, said first and second circuits 3, 4 5 can also be interconnected. It will thus be possible to transfer heat between said circuits.
  • said first and second circuits 2, 3 comprise:
  • a first branch 80 corresponding to a part of the first circuit 3, comprising, in particular, said pump 16 of the first circuit 3, said electrical machine 1 and / or said components 6, 8 connected in parallel with the latter,
  • a second branch 82 connecting said first and second circuits 3, 4.
  • Said second branch 82 of said first and second interconnected circuits is provided, for example, with said component 5 of the supply circuit of said electric machine 1.
  • Said first and second branches 80, 82 of said first and second interconnected circuits are here connected in shunt of said first front-face exchanger 14.
  • Said second circuit 2 advantageously comprises a bypass branch 84 of said component s of the supply circuit of the electric machine 1.
  • Said second circuit 2 is further configured to loop said heat transfer fluid through said component 5 of the power supply circuit of the electric machine 1 and said bypass branch 84, with the aid of said first pump 36 of said second circuit 4. In this way it will be possible to homogenize said component s of the supply circuit of the electric machine 1.
  • Said first and second circuits 3, 4 are configured to allow a loop circulation of said heat transfer fluid between said first branch 80 of said first and second interconnected circuits and all or part of said second circuit 4, especially said heat / coolant heat exchanger 26 and or said component 5 of the power supply circuit of the electric machine 1.
  • first 86, second 88, third 90 and / or fourth 92 valves interconnection The circulations mentioned above are here made possible by first 86, second 88, third 90 and / or fourth 92 valves interconnection.
  • the first interconnect valve 86 is located on said second branch 82 of said first and second interconnected circuits, between said first circuit 3 and said second circuit 4, on the input side of the pump 16 of the first circuit 2.
  • Said second interconnection valve 88 is located on said branch 84 bypass.
  • Said third interconnection valve 90 is located on the second circuit 4 provided with said component 5 of the supply circuit of the electric machine 1, on the side of said component s of the supply circuit of the electric machine 1 opposite the first pump 36 said second circuit 4, here downstream of a connection point 96 of said bypass circuit 84 and upstream of an interconnection portion 97 to the first circuit 3.
  • the fourth connection valve 94 is located on the first circuit 3 downstream of a node 99 of said first and second branches 80, 82 of said first and second interconnected circuits.
  • the set of valves provided on the second circuit and / or the heat transfer fluid circuits may be configured to allow regulation of the flow of heat transfer fluid through the heat exchanger / coolant heat exchanger 26.
  • Said second valve 88 may particular be provided at variable rate. In this way, it is possible to ensure that a low flow rate is obtained through said heat / coolant heat exchanger 26, which makes it possible to have coolant
  • a very low temperature for cooling the battery and better operation of the refrigerant circuit said heat exchanger / coolant heat exchanger 26 being located in a low pressure portion thereof.
  • said first branch may further comprise a heat generator 98, configured to heat said heat transfer fluid, and / or a heat store 100, configured to store heat from said heat transfer fluid and / or return heat to said coolant.
  • Said heat generator 98 comprises, for example, an electrical resistance, configured to be powered by said machine
  • Said first and second circuits 3, 4 are configured so that said heat generator 98 and said storage 100 are passed in series in this order by said heat transfer fluid. It is understood that such a solution allows to store heat during the operating phases of the vehicle allowing it and to restore it when necessary.
  • the refrigerant circuit may comprise a storage tank 102 of said refrigerant in place of the accumulator 62.
  • Said device is configured to circulate said refrigerant circuit in said storage tank 102 from said common node 53 between said first 46 and second 48 branches of said refrigerant circuit 2.
  • These third 54 and fourth 58 branches of said refrigerant circuit are here mounted in parallel between the inlet 60 of the compressor 50 and an outlet 104 of said storage tank of said refrigerant.
  • Said fifth leg 64 is connected directly to the inlet 60 of the compressor 50.
  • the anti-return valve bypassing said regulator 74 is
  • Said refrigerant circuit 2 may further comprise an internal exchanger 106, intended to allow a heat exchange between said refrigerant taken, on the one hand, upstream of a connection 108 of said fifth branch 64 to the inlet of the compressor 50 and downstream of a first node
  • the refrigerant circulates in
  • the heat transfer fluid can simultaneously:
  • the refrigerant circulates from said compressor 50 through said exchanger 22 adapted to operate as a condenser, said expander 74, said second front-end exchanger 44, and said accumulator 62, via the fifth branch. 64, to return to the compressor 50. It then operates in heat pump.
  • the coolant can circulate simultaneously in various ways depending on the needs, including cooling or reheating of the battery, in particular from the calories stored and / or released on said first circuit 3.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to a thermal conditioning device for a motor vehicle comprising an electric machine (1) used to drive said vehicle, said device comprising: - a refrigerant circuit (2), intended at least for conditioning of a passenger compartment of the vehicle, comprising a heat exchanger (22) intended to work as a condenser to heat a flow of air flowing toward said passenger compartment, - a first heat transfer fluid circuit (3) intended to cool said electric machine (1), - a second heat transfer fluid circuit (4) intended for thermal regulation of a component (5) of a supply circuit of said electric machine (1), - a heat exchanger (26), called heat transfer fluid/refrigerant heat exchanger, allowing a first heat exchange between said refrigerant circuit (2) and said second circuit (4), said circuits being configured to make said heat transfer fluid/refrigerant exchanger (26) work at least as a cooler so as to cool said heat transfer fluid using said refrigerant.

Description

DISPOSITIF DE CONDITIONNEMENT THERMIQUE POUR VEHICULE AUTOMOBILE COMPRENANT UNE MACHINE ELECTRIQUE SERVANT A  THERMAL CONDITIONING DEVICE FOR A MOTOR VEHICLE COMPRISING AN ELECTRIC MACHINE SERVING A

L'ENTRAINEMENT DUDIT VEHICULE  TRAINING THE VEHICLE

5 L'invention concerne un dispositif de conditionnement thermique pour véhicule automobile comprenant une machine électrique servant à l'entraînement dudit véhicule. The invention relates to a thermal conditioning device for a motor vehicle comprising an electric machine for driving said vehicle.

Dans de tels véhicules, contrairement à ce qui est le cas pour les véhicules munis d'un moteur thermique, les calories dégagées par la machine électrique î o d'entraînement du véhicule ne suffisent pas à elles seules à chauffer l'habitacle du véhicule.  In such vehicles, unlike in the case of vehicles equipped with a heat engine, the heat generated by the vehicle's electric drive machine is not sufficient on its own to heat the passenger compartment of the vehicle.

Il a ainsi été envisagé de faire fonctionner des circuits de climatisation de l'habitacle du véhicule en pompe à chaleur pour pallier cet inconvénient. De telles solutions posent cependant des difficultés, notamment de givrage des échangeurs 15 prélevant les calories sur l'air extérieur en mode pompe à chaleur.  It has thus been envisaged to operate air conditioning circuits of the passenger compartment of the vehicle in heat pump to overcome this drawback. Such solutions, however, pose difficulties, in particular frosting heat exchangers 15 taking the calories on the outside air in heat pump mode.

Par ailleurs, la batterie servant à alimenter la machine électrique doit être maintenue à une certaine température pour fonctionner de façon optimale en termes de niveau de charge et de durée de vie.  In addition, the battery used to power the electrical machine must be maintained at a certain temperature to operate optimally in terms of load level and life.

Il est encore à noter que de nombreux composants électriques et/ou 20 électroniques, à commencer par la machine électrique d'entraînement du véhicule, dégagent de la chaleur et, même s'ils ne suffisent pas à chauffer l'habitacle en toutes circonstances, constituent une source potentielle de calories.  It should also be noted that many electrical and / or electronic components, starting with the electric drive machine of the vehicle, give off heat and, even if they are not enough to heat the passenger compartment in all circumstances, are a potential source of calories.

Autrement dit, les problèmes de régulation thermique à traiter font intervenir de nombreux paramètres et les solutions proposées jusqu'à maintenant sont 25 complexes et/ou de performances limitées.  In other words, the thermal regulation problems to be dealt with involve many parameters and the solutions proposed until now are complex and / or of limited performance.

L'invention a pour but de résoudre les problèmes précédents et propose à cette fin un dispositif de conditionnement thermique pour véhicule automobile comprenant une machine électrique servant à l'entraînement dudit véhicule, ledit dispositif comprenant :  The invention aims to solve the above problems and proposes for this purpose a thermal conditioning device for a motor vehicle comprising an electric machine for driving said vehicle, said device comprising:

30 - un circuit de fluide réfrigérant, destiné au moins au conditionnement d'un habitacle du véhicule, comprenant un échangeur de chaleur destiné à fonctionner en condenseur pour réchauffer un flux d'air circulant en direction dudit habitacle,A refrigerant circuit, intended at least for conditioning a passenger compartment of the vehicle, comprising a heat exchanger intended to operate as a condenser for heating a flow of air flowing towards said passenger compartment,

- un premier circuit de fluide caloporteur destiné à un refroidissement de ladite machine électrique, a first heat transfer fluid circuit intended for a cooling of said electric machine,

- un second circuit de fluide caloporteur destiné à une régulation thermique d'un composant d'un circuit d'alimentation, en particulier une batterie d'alimentation électrique, de ladite machine électrique,  a second heat transfer fluid circuit intended for thermal regulation of a component of a supply circuit, in particular a power supply battery, of said electric machine,

5 - un échangeur de chaleur, dit échangeur de chaleur caloporteur/réfrigérant, permettant un premier échange de chaleur entre ledit circuit de fluide réfrigérant et ledit second circuit, lesdits circuits étant configurés pour faire fonctionner ledit échangeur caloporteur/réfrigérant au moins en refroidisseur de manière à refroidir ledit fluide caloporteur à l'aide dudit fluide réfrigérant.  A heat exchanger, said heat exchanger / coolant heat exchanger, allowing a first heat exchange between said refrigerant circuit and said second circuit, said circuits being configured to operate said heat exchanger / coolant at least in a cooler; cooling said heat transfer fluid with said refrigerant.

î o L'invention propose ainsi une approche plus globale permettant d'améliorer les performances tout en limitant la complexité, notamment en permettant d'utiliser un effet de pompe à chaleur pour un réchauffage de l'habitacle. Elle permet également un refroidissement de la batterie à partir du circuit de climatisation. Elles offrent par ailleurs de nombreuses potentialités par le biais desThe invention thus proposes a more comprehensive approach to improve performance while limiting complexity, including allowing the use of a heat pump effect for a heating of the passenger compartment. It also allows cooling of the battery from the air conditioning circuit. They also offer many potentialities through

15 interconnexions qui pourront être réalisées entre les circuits de fluide caloporteur. 15 interconnections that can be made between the heat transfer fluid circuits.

Selon différents modes de réalisation de l'invention qui pourront être pris ensemble ou séparément :  According to various embodiments of the invention that can be taken together or separately:

- ledit second circuit comprend une pompe,  said second circuit comprises a pump,

- ladite pompe est située sur une branche munie dudit composant du circuit 20 d'alimentation de la machine électrique,  said pump is located on a branch provided with said component of the power supply circuit of the electric machine,

- ledit second circuit comprend en outre une branche de contournement dudit composant du circuit d'alimentation de la machine électrique,  said second circuit further comprises a bypass branch of said component of the supply circuit of the electric machine,

- ladite branche de contournement est munie d'une vanne, avantageusement à débit réglable,  said bypass branch is provided with a valve, advantageously with an adjustable flow rate,

25 - ledit second circuit est en outre configuré pour faire boucler ledit fluide caloporteur à travers ledit composant du circuit d'alimentation de la machine électrique et ladite branche de contournement à l'aide de ladite pompe,  Said second circuit is further configured to loop said heat transfer fluid through said component of the power supply circuit of the electric machine and said bypass branch with the aid of said pump,

- ledit premier circuit comprend un échangeur de chaleur, dit premier échangeur de face avant, ledit dispositif étant configuré pour que ledit premier said first circuit comprises a heat exchanger, said first front-face exchanger, said device being configured so that said first

30 échangeur de face avant échange de la chaleur avec un flux d'air externe, Front heat exchanger exchange of heat with an external air flow,

- ledit premier circuit est configuré pour refroidir en outre d'autres composants électrique du véhicule,  said first circuit is configured to further cool other electrical components of the vehicle,

- ledit circuit de fluide réfrigérant comprend un échangeur de chaleur, dit second échangeur de face avant, ledit dispositif étant configuré pour que ledit second échangeur de face avant échange de la chaleur avec ledit flux d'air externe, said refrigerant circuit comprises a heat exchanger, said second front-face exchanger, said device being configured so that said second front-face exchanger exchanges heat with said external air flow,

- ledit second échangeur de face avant est apte à fonctionner en condenseur 5 et/ou en évaporateur,  said second front-face exchanger is able to operate in a condenser and / or in an evaporator,

- ledit circuit de fluide réfrigérant comprend une première branche, munie dudit second échangeur de face avant, et une seconde branche, munie dudit échangeur apte à fonctionner en condenseur, lesdites première et seconde branches dudit circuit de fluide réfrigérant étant montées en dérivation entre une î o sortie d'un compresseur dudit circuit de fluide réfrigérant et un nœud dudit circuit de fluide réfrigérant,  said refrigerant circuit comprises a first branch, provided with said second front-face exchanger, and a second branch, provided with said exchanger capable of operating as a condenser, said first and second branches of said refrigerant circuit being connected in a shunt between a second branch; o output of a compressor of said refrigerant circuit and a node of said refrigerant circuit,

- ledit circuit de fluide réfrigérant comprend un réservoir de stockage dudit fluide réfrigérant, ledit dispositif étant configuré pour faire circuler ledit fluide réfrigérant dans ledit réservoir de stockage depuis ledit nœud commun entre said refrigerant circuit comprises a storage tank for said refrigerant fluid, said device being configured to circulate said refrigerant fluid in said storage tank from said common node between

15 lesdites premières et secondes branches dudit circuit de fluide réfrigérant, Said first and second branches of said refrigerant circuit,

- ledit circuit de fluide réfrigérant comprend une troisième branche, munie d'un échangeur de chaleur, configuré pour refroidir l'habitacle du véhicule, ladite troisième branche étant montée entre une entrée du compresseur et ledit nœud du circuit de fluide réfrigérant,  said refrigerant circuit comprises a third branch, provided with a heat exchanger, configured to cool the passenger compartment of the vehicle, said third branch being mounted between an inlet of the compressor and said node of the refrigerant circuit,

20 - ledit circuit de fluide réfrigérant comprend une quatrième branche munie dudit échangeur caloporteur/réfrigérant, ladite quatrième branche étant montée en dérivation de ladite troisième branche, entre l'entrée du compresseur et ledit nœud du circuit de fluide réfrigérant,  Said refrigerant circuit comprises a fourth branch provided with said heat exchanger / coolant, said fourth branch being mounted in branch of said third branch, between the inlet of the compressor and said node of the refrigerant circuit,

- ledit circuit de fluide réfrigérant comprend une cinquième branche 25 permettant de relier une entrée dudit compresseur et ledit second échangeur de face avant, ledit circuit de fluide réfrigérant étant en outre configuré pour autoriser, dans une première configuration dudit circuit de fluide réfrigérant, la circulation dudit fluide réfrigérant dans un premier sens à travers ledit second échangeur de face avant, en contournant ladite cinquième branche, et dans une seconde said refrigerant circuit comprises a fifth branch making it possible to connect an inlet of said compressor and said second front-face exchanger, said refrigerant circuit being further configured to allow, in a first configuration of said refrigerant circuit, the circulation said coolant in a first direction through said second front-end exchanger, bypassing said fifth leg, and in a second

30 configuration dudit circuit de fluide réfrigérant, la circulation du fluide réfrigérant dans ledit second échangeur de face avant dans le sens opposé, en empruntant ladite seconde branche, Configuring said refrigerant circuit, circulating the refrigerant fluid in said second front-face exchanger in the opposite direction, through said second branch,

- ledit circuit de fluide réfrigérant comprend un accumulateur en entrée du compresseur, said refrigerant circuit comprises an accumulator at the inlet of compressor,

- ledit circuit de fluide réfrigérant est configuré pour autoriser une circulation indépendante dudit fluide réfrigérant dans lesdites seconde, troisième et quatrième branches dudit circuit de fluide réfrigérant.  said refrigerant circuit is configured to allow independent circulation of said refrigerant fluid in said second, third and fourth branches of said refrigerant circuit.

5 Selon un premier mode de réalisation, lesdits premier et second circuits sont indépendants.  According to a first embodiment, said first and second circuits are independent.

En variante, lesdits premier et second circuits sont interconnectés. In a variant, said first and second circuits are interconnected.

Selon ladite variante, lesdits premier et second circuits comprennent une première branche munie de ladite machine électrique et une seconde branche î o munie dudit composant du circuit d'alimentation de ladite machine électrique, lesdites branches étant montées en dérivation dudit premier échangeur de face avant. According to said variant, said first and second circuits comprise a first branch provided with said electrical machine and a second branch provided with said component of the supply circuit of said electric machine, said branches being mounted in shunt of said first front-face exchanger.

Selon différents aspects de cette variante de l'invention qui pourront être pris ensemble ou séparément :  According to different aspects of this variant of the invention that can be taken together or separately:

15 - ladite première branche comprend une pompe du premier circuit, Said first branch comprises a pump of the first circuit,

- lesdits premier et second circuits sont configurés pour permettre une circulation en boucle dudit fluide caloporteur entre ladite première branche et tout ou partie dudit second circuit,  said first and second circuits are configured to allow a loop circulation of said coolant between said first branch and all or part of said second circuit,

- ladite première branche comprend en outre un générateur de chaleur, said first branch further comprises a heat generator,

20 configuré pour réchauffer ledit fluide caloporteur, et/ou un stockeur de chaleur, configuré pour stocker de la chaleur provenant dudit fluide caloporteur et/ou restituer de la chaleur audit fluide caloporteur. Configured to heat said coolant, and / or a heat store, configured to store heat from said coolant and / or return heat to said coolant.

- ledit générateur de chaleur comprend une résistance électrique, configurée pour être alimentée par ladite machine électrique fonctionnant en générateur lors said heat generator comprises an electrical resistance, configured to be powered by said electrical machine operating as a generator during

25 d'une phase de freinage du véhicule, 25 of a braking phase of the vehicle,

- lesdits premier et second circuits sont configurés pour que ledit générateur de chaleur et ledit stockeur soient parcourus en série dans cet ordre par ledit fluide caloporteur.  said first and second circuits are configured so that said heat generator and said storage device are traversed in series in this order by said heat transfer fluid.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus Other features, details and advantages of the invention will become more apparent

30 clairement à la lecture de la description donnée ci-après à titre indicatif en relation avec des dessins dans lesquels : 30 clearly on reading the description given below for information in connection with drawings in which:

- la figure 1 est une vue schématique illustrant un premier exemple de réalisation du dispositif conforme à l'invention, - la figure 2 illustre une première variante de réalisation dudit dispositif,FIG. 1 is a schematic view illustrating a first exemplary embodiment of the device according to the invention, FIG. 2 illustrates a first variant embodiment of said device,

- la figure 3 illustre une seconde variante de réalisation dudit dispositif,FIG. 3 illustrates a second variant embodiment of said device,

- la figure 4 illustre une troisième variante de réalisation dudit dispositif. - Figure 4 illustrates a third embodiment of said device.

Dans la description ci-dessous, les termes amont et aval sont utilisés. Par In the description below, the terms upstream and downstream are used. By

5 convention, ces termes s'analysent au regard du composant concerné, par rapport au sens du fluide dans le circuit concerné et selon le mode de fonctionnement envisagé. 5 convention, these terms are analyzed with respect to the component concerned, with respect to the direction of the fluid in the circuit concerned and the mode of operation envisaged.

Comme illustré aux différentes figures, l'invention concerne un dispositif de conditionnement thermique pour véhicule automobile comprenant une machine î o électrique 1 servant à l'entraînement dudit véhicule. Autrement dit, l'invention est destinée aux véhicules, dits électrique ou hybride, utilisant une chaîne de traction et/ou propulsion du véhicule comprenant une machine électrique au lieu ou en complément du moteur thermique traditionnellement utilisé. Ladite chaîne de traction et/ou propulsion est en particulier configurée pour transmettre un couple As illustrated in the various figures, the invention relates to a thermal conditioning device for a motor vehicle comprising an electric machine 1 for driving said vehicle. In other words, the invention is intended for vehicles, said electric or hybrid, using a traction system and / or propulsion of the vehicle comprising an electric machine instead of or in addition to the heat engine traditionally used. Said traction and / or propulsion chain is in particular configured to transmit a torque

15 mécanique fournie par ladite machine électrique 1 jusqu'aux roues du véhicule. 15 provided by said electric machine 1 to the wheels of the vehicle.

Le dispositif sera tout d'abord décrit avant de décrire certains de ses modes d'utilisation, parmi lesquels on trouve :  The device will first be described before describing some of its modes of use, among which we find:

- un ou des modes climatisation, permettant de refroidir l'habitacle du véhicule,  - one or more air conditioning modes, for cooling the passenger compartment of the vehicle,

20 - un ou des modes de refroidissement de composants électriques, tels que ladite machine électrique et/ou des composants liés au fonctionnement de ladite machine électrique, comme sa batterie,  One or more cooling modes of electrical components, such as said electrical machine and / or components related to the operation of said electrical machine, such as its battery,

- un ou des modes pompe à chaleur, permettant de chauffer, l'habitacle du véhicule et/ou lesdits composants électriques.  - One or more heat pump modes, for heating, the passenger compartment of the vehicle and / or said electrical components.

25 Ledit dispositif comprend trois circuits, à savoir :  Said device comprises three circuits, namely:

- un circuit 2 de fluide réfrigérant, destiné au moins au conditionnement d'un habitacle du véhicule, comprenant un échangeur de chaleur 22 destiné à fonctionner en condenseur pour réchauffer un flux d'air circulant en direction dudit habitacle,  a circuit 2 for refrigerant fluid, intended at least for conditioning a passenger compartment of the vehicle, comprising a heat exchanger 22 intended to operate as a condenser for heating a flow of air flowing towards said passenger compartment,

30 - un premier circuit 3 de fluide caloporteur, destiné à un refroidissement de ladite machine électrique,  A first coolant circuit 3 for cooling said electric machine,

- un second circuit 4 de fluide caloporteur destiné, à une régulation thermique d'un composant s d'un circuit d'alimentation de ladite machine électrique 1 , en particulier sa batterie d'alimentation électrique. a second heat transfer fluid circuit 4 intended for thermal regulation of a component s of a supply circuit for said electric machine 1, in especially its battery power supply.

Ledit fluide réfrigérant est un fluide destiné à changer de phases dans les conditions de température et de pression d'utilisation du circuit de fluide réfrigérant. Il s'agit, par exemple, du fluide connu sous le nom de R134 ou 5 R1234yf. Ledit fluide caloporteur est, par exemple, un liquide, notamment un mélange d'eau et d'antigel, en particulier de glycol.  Said coolant is a fluid intended to change phases under the conditions of temperature and operating pressure of the refrigerant circuit. This is, for example, the fluid known as R134 or R1234yf. Said coolant is, for example, a liquid, especially a mixture of water and antifreeze, in particular glycol.

Comme illustré à la figure 1 , ledit premier circuit 3 pourra être configuré pour refroidir d'autres composants 6, 8 du véhicule. Il s'agit en particulier de composants électriques, c'est-à-dire des composants dégageant de la chaleur par î o effet Joule comme ladite machine électrique 1 et/ou ladite batterie 5. Il pourra plus s'agir précisément d'un module électronique 6 de commande de ladite machine électrique et/ou du ou des circuits électriques associés et/ou d'un module électronique de commande d'une installation de conditionnement d'air de l'habitacle du véhicule, ladite installation de conditionnement comprenant ledit 15 circuit 2 de climatisation.  As illustrated in Figure 1, said first circuit 3 may be configured to cool other components 6, 8 of the vehicle. In particular, these are electrical components, that is to say components which generate heat by the Joule effect such as said electric machine 1 and / or said battery 5. It may more precisely be a matter of electronic control module 6 for controlling said electrical machine and / or associated electrical circuit (s) and / or an electronic control module of an air conditioning installation of the passenger compartment of the vehicle, said conditioning installation comprising said 15 circuit 2 air conditioning.

Ladite machine électrique 1 et lesdits autres composants 6, 8 sont ici montés en dérivation sur deux branches parallèles 10, 12 du premier circuit 3. Lesdits autres composants 6, 8 sont montés, en série, sur l'une 10 desdites branches et la machine électrique 1 est monté sur l'autre 12 desdites branches.  Said electrical machine 1 and said other components 6, 8 are here mounted in parallel on two parallel branches 10, 12 of the first circuit 3. Said other components 6, 8 are mounted in series on one of said branches and the machine 1 is mounted on the other 12 of said branches.

20 Ledit premier circuit 3 pourra en outre comprendre un échangeur de chaleur 14, dit premier échangeur de face avant. Ledit dispositif est configuré pour que ledit premier échangeur de face avant 14 échange de la chaleur avec un flux d'air externe FE. Ledit premier circuit 3 comprend une outre une pompe 16 d'entraînement dudit liquide caloporteur dans ledit premier circuit 3.  Said first circuit 3 may further comprise a heat exchanger 14, said first front-end exchanger. Said device is configured so that said first front-face exchanger 14 exchanges heat with an external airflow FE. Said first circuit 3 further comprises a pump 16 for driving said heat transfer liquid in said first circuit 3.

25 Un premier nœud 18 desdites deux branches parallèles 10, 12 est relié à une sortie de ladite pompe 16. Un second nœud 21 desdites deux branches parallèles 10, 12, opposé au premier nœud 18, est relié audit premier échangeur de face avant 14. Ce dernier est relié à l'entrée de ladite pompe 16. Autrement dit, ici, ledit fluide caloporteur circule en série depuis ladite pompe 16 à traversA first node 18 of said two parallel branches 10, 12 is connected to an output of said pump 16. A second node 21 of said two parallel branches 10, 12, opposite to the first node 18, is connected to said first front-face exchanger 14. The latter is connected to the inlet of said pump 16. In other words, here, said coolant circulates in series from said pump 16 through

30 lesdites deux branches parallèles 10, 12 puis ledit premier échangeur de face avant 14 pour retourner à ladite pompe 16. Said two parallel branches 10, 12 then said first front-face exchanger 14 to return to said pump 16.

Ledit dispositif, en particulier ledit second circuit 4, comprend en outre un échangeur de chaleur 26, dit échangeur caloporteur/réfrigérant, permettant un premier échange de chaleur entre ledit circuit de fluide réfrigérant 2 et ledit second circuit 4. Lesdits circuits 2, 3, 4, en particulier ledit circuit de fluide réfrigérant 2 et ledit second circuit 4, sont en outre configurés pour faire fonctionner ledit premier échangeur caloporteur/réfrigérant 26 au moins en refroidisseur de manière à 5 refroidir ledit fluide caloporteur à l'aide dudit fluide réfrigérant. Said device, in particular said second circuit 4, further comprises a heat exchanger 26, said heat exchanger / coolant, allowing a first exchange of heat between said refrigerant circuit 2 and said second circuit 4. Said circuits 2, 3, 4, in particular said refrigerant circuit 2 and said second circuit 4, are further configured to operate said first heat exchanger refrigerant 26 at least in a cooler so as to cool said coolant with said refrigerant.

Ledit second circuit 4 comprend ici une pompe 36. Le fluide caloporteur parcourt le second circuit 4 depuis la pompe 36 en traversant ledit composant 5 du circuit d'alimentation de la machine électrique 1 et ledit échangeur de chaleur caloporteur/réfrigérant 26. Il comprend en outre une vanne 42 entre ledit î o échangeur de chaleur caloporteur/réfrigérant et une entrée de ladite pompe 36.  Said second circuit 4 here comprises a pump 36. The heat transfer fluid travels the second circuit 4 from the pump 36 through said component 5 of the supply circuit of the electric machine 1 and said heat exchanger / coolant heat exchanger 26. It comprises in addition to a valve 42 between said heat exchanger / coolant heat exchanger and an inlet of said pump 36.

Ledit circuit 2 de fluide réfrigérant est destiné au moins à un conditionnement d'un habitacle du véhicule. Il comprend ici pour cela, outre l'échangeur 22 apte à fonctionner en condenseur et l'échangeur caloporteur/réfrigérant 26, un échangeur de chaleur 44, dit second échangeur de face avant.  Said refrigerant circuit 2 is intended at least for a conditioning of a passenger compartment of the vehicle. It includes here for this, in addition to the heat exchanger 22 capable of operating in the condenser and the heat exchanger / refrigerant 26, a heat exchanger 44, said second front-end heat exchanger.

15 Ledit dispositif est configuré pour que ledit second échangeur de face avant 44 échange de la chaleur avec ledit flux d'air externe FE. Lesdits premier 14 et second 44 échangeurs de face avant sont ici montés en série selon le sens de circulation du flux d'air FE, ledit second échangeur de face avant 44 étant destiné à être parcouru en premier par ledit flux d'air externe FE.  Said device is configured so that said second front-face exchanger 44 exchanges heat with said external airflow FE. Said first 14 and second 44 front-face exchangers are here connected in series according to the flow direction of the air flow FE, said second front-face exchanger 44 being intended to be traversed first by said external air flow FE.

20 Ledit circuit 2 de fluide réfrigérant comprend une première branche 46, munie dudit second échangeur de face avant 44, et une seconde branche 48, munie dudit échangeur apte à fonctionner en condenseur 22. Lesdites première 46 et seconde 48 branches dudit circuit de fluide réfrigérant 2 sont montées en dérivation entre une sortie 52 d'un compresseur 50 dudit circuit 2 de fluide Said refrigerant circuit 2 comprises a first branch 46, provided with said second front-face exchanger 44, and a second branch 48, provided with said exchanger capable of operating as a condenser 22. Said first 46 and second 48 branches of said refrigerant circuit 2 are mounted in shunt between an outlet 52 of a compressor 50 of said fluid circuit 2

25 réfrigérant et un nœud 53 dudit circuit 2 de fluide réfrigérant. 25 refrigerant and a node 53 of said refrigerant circuit 2.

Ledit circuit 2 de fluide réfrigérant comprend ici une troisième branche 54, munie d'un échangeur de chaleur 56, en particulier un évaporateur, configuré pour refroidir l'habitacle du véhicule. Ladite troisième branche est montée entre une entrée 60 du compresseur et le nœud 53 du circuit 2 de fluide réfrigérant, c'est-à- Said refrigerant circuit 2 here comprises a third branch 54, provided with a heat exchanger 56, in particular an evaporator, configured to cool the passenger compartment of the vehicle. Said third branch is mounted between an inlet 60 of the compressor and the node 53 of the refrigerant circuit 2, that is,

30 dire, le nœud commun entre ladite première branche 46 et ladite seconde branche 48 dudit circuit 2 de fluide réfrigérant. That is, the common node between said first branch 46 and said second branch 48 of said refrigerant circuit 2.

L'échangeur de chaleur caloporteur/réfrigérant 26 est avantageusement situé sur une quatrième branche 58 montée en dérivation de ladite troisième branche, c'est-à-dire, entre l'entrée 60 du compresseur et le nœud 53 du circuit 2 de fluide réfrigérant. The heat / coolant heat exchanger 26 is advantageously located on a fourth branch 58 mounted as a branch of said third branch, i.e., between the inlet 60 of the compressor and the node 53 of the refrigerant circuit 2.

Ledit circuit 2 de fluide réfrigérant pourra en outre comprendre un accumulateur 62 dudit fluide réfrigérant, en entrée du compresseur 50.  Said refrigerant circuit 2 may further comprise an accumulator 62 of said refrigerant at the inlet of the compressor 50.

Ledit second échangeur de face avant 44 est avantageusement apte à fonctionner en condenseur et/ou en évaporateur.  Said second front-face exchanger 44 is advantageously capable of operating as a condenser and / or an evaporator.

Pour cela, ledit circuit 2 de fluide réfrigérant comprend ici une cinquième branche 64 permettant de relier l'entrée de l'accumulateur 64 et ledit second échangeur de face avant 44.  For this, said refrigerant circuit 2 here comprises a fifth branch 64 for connecting the inlet of the accumulator 64 and said second front-face exchanger 44.

Ledit circuit 2 de fluide réfrigérant est en outre configuré pour autoriser : Said refrigerant circuit 2 is further configured to allow:

- dans une première configuration dudit circuit de fluide réfrigérant, la circulation dudit fluide réfrigérant dans un premier sens à travers ledit second échangeur de face avant 44, à savoir de haut en bas sur la figure, ceci en contournant ladite cinquième branche 64, par l'intermédiaire d'une partie de la première branche 46 dudit circuit 2 de fluide réfrigérant reliée à la sortie du compresseur 50, et in a first configuration of said refrigerant circuit, the circulation of said coolant in a first direction through said second front-face exchanger 44, namely from top to bottom in the figure, this bypassing said fifth branch 64, by intermediate part of the first branch 46 of said refrigerant circuit 2 connected to the output of the compressor 50, and

- dans une seconde configuration dudit circuit de fluide réfrigérant, la circulation du fluide réfrigérant dans ledit second échangeur de face avant 44 dans le sens opposé, en empruntant ladite seconde branche 64 en retour vers le compresseur 50.  in a second configuration of said refrigerant circuit, the circulation of the refrigerant in said second front-face exchanger 44 in the opposite direction, by passing said second branch 64 back to the compressor 50.

Une telle configuration du circuit réfrigérant est particulièrement avantageuse en ce qu'elle permet d'avoir une continuité de l'état du fluide réfrigérant. Plus précisément, au niveau du nœud 53 dudit circuit de fluide réfrigérant, ledit fluide sera en phase liquide que l'on soit en mode climatisation ou en mode pompe à chaleur. Les changements de mode seront de la sorte facilités.  Such a configuration of the refrigerant circuit is particularly advantageous in that it allows a continuity of the refrigerant state. More specifically, at the node 53 of said refrigerant circuit, said fluid will be in the liquid phase whether one is in cooling mode or in heat pump mode. Fashion changes will be facilitated.

Un tel résultat est en particulier rendu possible par la mise en parallèle des première 46 et seconde 48 branches entre la sortie de l'évaporateur 50 et le nœud 53 dudit circuit de fluide réfrigérant, ceci combiné :  Such a result is in particular made possible by the paralleling of the first 46 and second 48 branches between the outlet of the evaporator 50 and the node 53 of said refrigerant circuit, this combined:

au raccordement de la troisième 54 et/ou quatrième 58 branche à l'entrée du compresseur, depuis le nœud 53 du circuit de fluide réfrigérant où se raccorde la première 46 et la seconde 48 branches, la présence de la cinquième branche de liaison 64,  at the connection of the third 54 and / or fourth branch 58 to the compressor inlet, from the node 53 of the refrigerant circuit where the first 46 and the second 48 branches are connected, the presence of the fifth connecting branch 64,

l'utilisation d'un ensemble de vannes permettant d'inverser la circulation du fluide dans le second échangeur de face avant 44 et, avantageusement, de faire passer ou non le fluide dans chacune des branches. the use of a set of valves to reverse the fluid flow in the second front face exchanger 44 and, advantageously, to pass or not the fluid in each of the branches.

A ce sujet, il est à noter que ladite configuration permet de limiter le nombre 5 de vannes à employer pour réaliser les fonctions désirées.  In this regard, it should be noted that said configuration makes it possible to limit the number of valves to be used to carry out the desired functions.

Ledit circuit de fluide réfrigérant pourra plus précisément comprendre en une première vanne 66, située sur la première branche 46 dudit circuit 2 de fluide réfrigérant et/ou une seconde vanne 68, située sur la seconde branche 48 dudit circuit 2 de fluide réfrigérant, ici en sortie du compresseur 50. Il comprend en outre î o une troisième vanne 70 sur ladite cinquième branche 64.  Said refrigerant circuit may more specifically comprise a first valve 66, located on the first branch 46 of said refrigerant circuit 2 and / or a second valve 68, located on the second branch 48 of said refrigerant circuit 2, here in FIG. compressor outlet 50. It further comprises o a third valve 70 on said fifth branch 64.

Il comprend encore ici des vannes anti retour 72a, 72b sur chacune desdites première 46 et seconde 48 branches, du côté dudit nœud commun 53. Un détendeur 74 pourra être monté en dérivation de la vanne anti retour 72a de ladite première branche 46 du circuit 2 de fluide réfrigérant.  It still includes here non-return valves 72a, 72b on each of said first 46 and second 48 branches, on the side of said common node 53. A pressure reducer 74 may be mounted in parallel with the non-return valve 72a of said first branch 46 of the circuit 2 refrigerant.

15 Ledit circuit 2 de fluide réfrigérant est en outre ici configuré pour autoriser une circulation indépendante dudit fluide réfrigérant dans lesdites première 46, seconde 48, troisième 54 et quatrième 58 branches dudit circuit 2 de fluide réfrigérant, notamment par l'intermédiaire desdites vannes 66, 68, mentionnées plus haut et/ou de vannes 76, 78 situés sur lesdites troisième 54 et quatrième 58 20 branches du circuit 2 de fluide réfrigérant, en particulier du côté dudit nœud 53 commun auxdites première 46 et seconde 48 branches du circuit 2 de fluide réfrigérant. Said refrigerant circuit 2 is furthermore here configured to allow independent circulation of said refrigerant fluid in said first 46, second 48, third 54 and fourth 58 branches of said refrigerant circuit 2, in particular via said valves 66, 68, mentioned above and / or valves 76, 78 located on said third 54 and fourth 58 branches of the refrigerant circuit 2, in particular on the side of said node 53 common to said first 46 and second 48 branches of the fluid circuit 2 refrigerant.

Ledit échangeur de chaleur 56, configuré pour refroidir l'habitacle du véhicule, pourra être associé audit échangeur 22 apte à fonctionner en Said heat exchanger 56, configured to cool the passenger compartment of the vehicle, may be associated with said exchanger 22 able to operate in

25 condenseur dans un boîtier de conditionnement d'air, non représenté, pour diriger un flux d'air FH, de température régulée grâce au dispositif conforme à l'invention, en direction de l'habitacle du véhicule. Ledit dispositif pourra en outre comprendre, en particulier dans ledit boîtier de conditionnement d'air un réchauffeur d'air 57, notamment situé entre ledit évaporateur 56 et ledit échangeur apte à fonctionner25 condenser in an air conditioning housing, not shown, for directing a flow of air FH, temperature controlled by the device according to the invention, towards the passenger compartment of the vehicle. Said device may furthermore comprise, in particular in said air conditioning box, an air heater 57, in particular located between said evaporator 56 and said exchanger able to operate.

30 en condenseur 22, dans le sens de la circulation dudit flux d'air FH dans ledit boîtier. 30 in the condenser 22, in the direction of flow of said air flow FH in said housing.

On comprend qu'avec un tel dispositif, on peut effectuer à la fois une régulation thermique de l'habitacle du véhicule et de la batterie 5, entre autres, ceci tout en utilisant un effet de pompe à chaleur apportée par ledit échangeur 22 apte à fonctionner en condenseur. It is understood that with such a device, it is possible to perform both a thermal regulation of the passenger compartment of the vehicle and the battery 5, among others, this while using a heat pump effect provided by said exchanger 22 able to operate in a condenser.

A la figure 1 , lesdits premier et second circuits 3, 4 sont indépendants. Comme illustré aux figures suivantes, lesdits premier et second circuits 3, 4 5 pourront aussi être interconnectés. On pourra ainsi disposer de transferts thermiques entre lesdits circuits.  In Figure 1, said first and second circuits 3, 4 are independent. As illustrated in the following figures, said first and second circuits 3, 4 5 can also be interconnected. It will thus be possible to transfer heat between said circuits.

Comme illustré à la figure 2, lesdits premier et second circuits 2, 3, comprennent :  As illustrated in FIG. 2, said first and second circuits 2, 3 comprise:

- une première branche 80 correspondant à une partie du premier circuit 3 î o comprenant, en particulier, ladite pompe 16 du premier circuit 3, ladite machine électrique 1 et/ou lesdits composants 6, 8 montés en parallèle de cette dernière, a first branch 80 corresponding to a part of the first circuit 3, comprising, in particular, said pump 16 of the first circuit 3, said electrical machine 1 and / or said components 6, 8 connected in parallel with the latter,

- une seconde branche 82, reliant lesdits premier et second circuits 3, 4. Ladite seconde branche 82 dudit premier et second circuits interconnectés est munie, par exemple, dudit composant 5 du circuit d'alimentation de ladite 15 machine électrique 1 . a second branch 82, connecting said first and second circuits 3, 4. Said second branch 82 of said first and second interconnected circuits is provided, for example, with said component 5 of the supply circuit of said electric machine 1.

Lesdites premières et secondes branches 80, 82 dudit premier et second circuits interconnectés sont ici montées en dérivation dudit premier échangeur de face avant 14.  Said first and second branches 80, 82 of said first and second interconnected circuits are here connected in shunt of said first front-face exchanger 14.

Ledit second circuit 2 comprend avantageusement une branche de 20 contournement 84 dudit composant s du circuit d'alimentation de la machine électrique 1 . Ledit second circuit 2 est en outre configuré pour faire boucler ledit fluide caloporteur à travers ledit composant 5 du circuit d'alimentation de la machine électrique 1 et ladite branche de contournement 84, à l'aide de ladite première pompe 36 dudit second circuit 4. On pourra de la sorte effectuer une 25 homogénéisation dudit composant s du circuit d'alimentation de la machine électrique 1 .  Said second circuit 2 advantageously comprises a bypass branch 84 of said component s of the supply circuit of the electric machine 1. Said second circuit 2 is further configured to loop said heat transfer fluid through said component 5 of the power supply circuit of the electric machine 1 and said bypass branch 84, with the aid of said first pump 36 of said second circuit 4. In this way it will be possible to homogenize said component s of the supply circuit of the electric machine 1.

Lesdits premier et second circuits 3, 4 sont configurés pour permettre une circulation en boucle dudit fluide caloporteur entre ladite première branche 80 dudit premier et second circuits interconnectés et tout ou partie dudit second 30 circuit 4, notamment ledit échangeur de chaleur caloporteur/réfrigérant 26 et/ou ledit composant 5 du circuit d'alimentation de la machine électrique 1 .  Said first and second circuits 3, 4 are configured to allow a loop circulation of said heat transfer fluid between said first branch 80 of said first and second interconnected circuits and all or part of said second circuit 4, especially said heat / coolant heat exchanger 26 and or said component 5 of the power supply circuit of the electric machine 1.

Les circulations évoquées plus haut sont ici rendues possibles par des première 86, seconde 88, troisième 90 et/ou une quatrième 92 vannes d'interconnexion. La première vanne d'interconnexion 86 est située sur ladite seconde branche 82 dudit premier et second circuits interconnectés, entre ledit premier circuit 3 et ledit second circuit 4, côté entrée de la pompe 16 du premier circuit 2. Ladite seconde vanne d'interconnexion 88 est située sur ladite 5 branche 84 de contournement. Ladite troisième vanne d'interconnexion 90 est située sur le second circuit 4 muni dudit composant 5 du circuit d'alimentation de la machine électrique 1 , du côté dudit composant s du circuit d'alimentation de la machine électrique 1 opposé à la première pompe 36 dudit second circuit 4, ici en aval d'un point de connexion 96 dudit circuit de contournement 84 et en amont î o d'une partie 97 d'interconnexion au premier circuit 3. La quatrième vanne de connexion 94 est située sur le premier circuit 3 en aval d'un nœud 99 desdites premières et secondes branches 80, 82 dudit premier et second circuits interconnectés. The circulations mentioned above are here made possible by first 86, second 88, third 90 and / or fourth 92 valves interconnection. The first interconnect valve 86 is located on said second branch 82 of said first and second interconnected circuits, between said first circuit 3 and said second circuit 4, on the input side of the pump 16 of the first circuit 2. Said second interconnection valve 88 is located on said branch 84 bypass. Said third interconnection valve 90 is located on the second circuit 4 provided with said component 5 of the supply circuit of the electric machine 1, on the side of said component s of the supply circuit of the electric machine 1 opposite the first pump 36 said second circuit 4, here downstream of a connection point 96 of said bypass circuit 84 and upstream of an interconnection portion 97 to the first circuit 3. The fourth connection valve 94 is located on the first circuit 3 downstream of a node 99 of said first and second branches 80, 82 of said first and second interconnected circuits.

L'ensemble de vannes prévues sur le second circuit et/ou les circuits de 15 fluide caloporteur, pourra être configuré pour autoriser une régulation du débit de fluide caloporteur à travers l'échangeur de chaleur caloporteur/réfrigérant 26. Ladite seconde vanne 88 pourra en particulier être prévue à débit variable. On peut de la sorte faire en sorte d'avoir un débit faible à travers ledit échangeur de chaleur caloporteur/réfrigérant 26, ce qui permet d'avoir du liquide caloporteur à The set of valves provided on the second circuit and / or the heat transfer fluid circuits may be configured to allow regulation of the flow of heat transfer fluid through the heat exchanger / coolant heat exchanger 26. Said second valve 88 may particular be provided at variable rate. In this way, it is possible to ensure that a low flow rate is obtained through said heat / coolant heat exchanger 26, which makes it possible to have coolant

20 une température très faible pour le refroidissement de la batterie et un meilleur fonctionnement du circuit de fluide réfrigérant, ledit échangeur de chaleur caloporteur/réfrigérant 26 étant situé dans une partie basse pression de ce dernier. A very low temperature for cooling the battery and better operation of the refrigerant circuit, said heat exchanger / coolant heat exchanger 26 being located in a low pressure portion thereof.

Comme illustré à la figure 3, ladite première branche pourra en outre 25 comprend un générateur de chaleur 98, configuré pour réchauffer ledit fluide caloporteur, et/ou un stockeur de chaleur 100, configuré pour stocker de la chaleur provenant dudit fluide caloporteur et/ou restituer de la chaleur audit fluide caloporteur. Ledit générateur de chaleur 98 comprend, par exemple, une résistance électrique, configurée pour être alimentée par ladite machine As illustrated in FIG. 3, said first branch may further comprise a heat generator 98, configured to heat said heat transfer fluid, and / or a heat store 100, configured to store heat from said heat transfer fluid and / or return heat to said coolant. Said heat generator 98 comprises, for example, an electrical resistance, configured to be powered by said machine

30 électrique 1 , fonctionnant en générateur lors d'une phase de freinage du véhicule. 30 electrical 1, operating as a generator during a braking phase of the vehicle.

Lesdits premier et second circuits 3, 4 sont configurés pour que ledit générateur de chaleur 98 et ledit stockeur 100 soient parcourus en série dans cet ordre par ledit fluide caloporteur. On comprend qu'une telle solution permet stocker de la chaleur pendant les phases de fonctionnement du véhicule le permettant et de la restituer quand nécessaire. Said first and second circuits 3, 4 are configured so that said heat generator 98 and said storage 100 are passed in series in this order by said heat transfer fluid. It is understood that such a solution allows to store heat during the operating phases of the vehicle allowing it and to restore it when necessary.

Comme illustré à la figure 4, le circuit de fluide réfrigérant pourra comprendre 5 un réservoir de stockage 102 dudit fluide réfrigérant à la place de l'accumulateur 62.  As illustrated in FIG. 4, the refrigerant circuit may comprise a storage tank 102 of said refrigerant in place of the accumulator 62.

Ledit dispositif est configuré pour faire circuler ledit circuit de fluide réfrigérant dans ledit réservoir de stockage 102 depuis ledit nœud commun 53 entre lesdites première 46 et seconde 48 branches dudit circuit réfrigérant 2.  Said device is configured to circulate said refrigerant circuit in said storage tank 102 from said common node 53 between said first 46 and second 48 branches of said refrigerant circuit 2.

î o Lesdites troisième 54 et quatrième 58 branches dudit circuit de fluide réfrigérant sont ici montées en dérivation entre l'entrée 60 du compresseur 50 et une sortie 104 dudit réservoir de stockage dudit fluide réfrigérant. Ladite cinquième branche 64 est connectée directement à l'entrée 60 du compresseur 50. La vanne anti retour en contournement dudit détendeur 74 estThese third 54 and fourth 58 branches of said refrigerant circuit are here mounted in parallel between the inlet 60 of the compressor 50 and an outlet 104 of said storage tank of said refrigerant. Said fifth leg 64 is connected directly to the inlet 60 of the compressor 50. The anti-return valve bypassing said regulator 74 is

15 devenue inutile. 15 become useless.

Ledit circuit de fluide réfrigérant 2 pourra en outre comprendre un échangeur interne 106, destiné à permettre un échange de chaleur entre ledit fluide réfrigérant pris, d'une part, en amont d'une connexion 108 de ladite cinquième branche 64 à l'entrée du compresseur 50 et en aval d'un premier nœud Said refrigerant circuit 2 may further comprise an internal exchanger 106, intended to allow a heat exchange between said refrigerant taken, on the one hand, upstream of a connection 108 of said fifth branch 64 to the inlet of the compressor 50 and downstream of a first node

20 commun 1 10 auxdites troisième 54 et quatrième 58 branches dudit circuit de fluide réfrigérant 2, et, d'autre part, en amont d'un second nœud commun 1 12 entre lesdites troisièmes 54 et quatrièmes 58 branches dudit circuit de fluide réfrigérant 2 et en aval d'un nœud commun 1 14 entre la sortie 1 04 dudit réservoir de stockage de fluide réfrigérant 102 et une entrée du détendeur 74 lié en aval, selon 25 le sens de circulation de fluide dans ladite seconde configuration, audit second échangeur de face avant 44. 20 common to said third 54 and fourth 58 branches of said refrigerant circuit 2, and, secondly, upstream of a second common node 1 12 between said third 54 and fourth 58 branches of said refrigerant circuit 2 and downstream of a common node 1 14 between the outlet 1 04 of said refrigerant storage tank 102 and an inlet of the downstream connected regulator 74, in the direction of fluid flow in said second configuration, to said second face exchanger before 44.

On évoque dans la suite différents modes de fonctionnement du dispositif conforme à l'invention en relation avec le mode de réalisation de la figure 3.  Various modes of operation of the device according to the invention in connection with the embodiment of FIG.

Selon un premier mode de fonctionnement, le fluide réfrigérant circule en According to a first mode of operation, the refrigerant circulates in

30 série depuis le compresseur 50 à travers le second échangeur de face avant 44, la vanne anti-retour 72a, l'évaporateur 56 et l'accumulateur 62 pour revenir au compresseur 50. On est alors dans un mode de fonctionnement classique pour un conditionnement de l'habitacle du véhicule. De son côté, le fluide caloporteur pourra simultanément : 30 series from the compressor 50 through the second front face exchanger 44, the non-return valve 72a, the evaporator 56 and the accumulator 62 to return to the compressor 50. It is then in a conventional mode of operation for a conditioning the passenger compartment of the vehicle. For its part, the heat transfer fluid can simultaneously:

- circuler en boucle dans le premier circuit 3 et en boucle dans ladite batterie 5 et sa branche de contournement 84 pour effectuer une homogénéisation de la batterie, ou  circulating in a loop in the first circuit 3 and in a loop in said battery 5 and its bypass branch 84 to homogenize the battery, or

5 - circuler dans ledit premier circuit 3 et ladite batterie 5 en passant par ladite seconde branche 82 dudit premier et second circuits interconnectés, pour effectuer un refroidissement de la batterie 5 à l'aide du premier échangeur de face avant 44, ou  5 - circulating in said first circuit 3 and said battery 5 through said second branch 82 of said first and second interconnected circuits, for cooling the battery 5 with the aid of the first front-face exchanger 44, or

- dans le premier circuit 3 et en boucle entre la batterie 5 et ledit échangeur î o caloporteur/réfrigérant 26, ledit fluide réfrigérant passant en outre dans ledit échangeur caloporteur/réfrigérant 26 pour effectuer un refroidissement de la batterie 5 à l'aide dudit second échangeur caloporteur/réfrigérant 26.  in the first circuit 3 and in a loop between the battery 5 and said heat exchanger / heat exchanger 26, said refrigerant also passing through said heat exchanger / cooler 26 for cooling the battery 5 with the aid of said second heat exchanger / refrigerant 26.

Selon un autre mode de fonctionnement, le fluide réfrigérant circule depuis ledit compresseur 50 à travers ledit échangeur 22 apte à fonctionner en 15 condenseur, ledit détendeur 74, ledit second échangeur de face avant 44, et ledit accumulateur 62, en passant par la cinquième branche 64, pour revenir au compresseur 50. On fonctionne alors en pompe à chaleur.  According to another mode of operation, the refrigerant circulates from said compressor 50 through said exchanger 22 adapted to operate as a condenser, said expander 74, said second front-end exchanger 44, and said accumulator 62, via the fifth branch. 64, to return to the compressor 50. It then operates in heat pump.

Le fluide caloporteur pourra circuler simultanément de diverses façons en fonction des besoins, notamment de refroidissement ou de réchauffage de la 20 batterie, notamment à partir des calories stockées et/ou dégagées sur ledit premier circuit 3.  The coolant can circulate simultaneously in various ways depending on the needs, including cooling or reheating of the battery, in particular from the calories stored and / or released on said first circuit 3.

D'autres modes de fonctionnement sont encore possibles, notamment permettant un fonctionnement en mode pompe à chaleur tout en évitant le givrage du second échangeur de face avant 44.  Other operating modes are still possible, in particular enabling operation in heat pump mode while avoiding icing of the second front-face heat exchanger 44.

Claims

REVENDICATIONS 1 . Dispositif de conditionnement thermique pour véhicule automobile comprenant une machine électrique (1 ) servant à l'entraînement dudit véhicule,1. Thermal conditioning device for a motor vehicle comprising an electric machine (1) for driving said vehicle, 5 ledit dispositif comprenant : Said device comprising: - un circuit (2) de fluide réfrigérant, destiné au moins au conditionnement d'un habitacle du véhicule, comprenant un échangeur de chaleur (22) destiné à fonctionner en condenseur pour réchauffer un flux d'air circulant en direction dudit habitacle,  a refrigerant circuit (2) intended at least for conditioning a passenger compartment of the vehicle, comprising a heat exchanger (22) intended to operate as a condenser for heating a flow of air flowing towards said passenger compartment, î o - un premier circuit (3) de fluide caloporteur destiné à un refroidissement de ladite machine électrique (1 ), o o - a first circuit (3) of coolant for cooling said electric machine (1), - un second circuit (4) de fluide caloporteur destiné à une régulation thermique d'un composant (5) d'un circuit d'alimentation de ladite machine électrique (1 ),  a second heat transfer fluid circuit (4) for thermal regulation of a component (5) of a supply circuit of said electric machine (1), 15 - un échangeur de chaleur (26), dit échangeur de chaleur caloporteur/réfrigérant, permettant un premier échange de chaleur entre ledit circuit (2) de fluide réfrigérant et ledit second circuit (4), lesdits circuits étant configurés pour faire fonctionner ledit échangeur caloporteur/réfrigérant (26) au moins en refroidisseur de manière à refroidir ledit fluide caloporteur à l'aide dudit A heat exchanger (26), said heat exchanger / coolant heat exchanger, allowing a first heat exchange between said refrigerant circuit (2) and said second circuit (4), said circuits being configured to operate said exchanger coolant / coolant (26) at least in cooler so as to cool said coolant with the aid of said 20 fluide réfrigérant. Refrigerant fluid. 2. Dispositif selon la revendication 1 dans lequel ledit second circuit (4) comprend une pompe (36) située sur une branche (34) munie dudit composant (5) du circuit d'alimentation de la machine électrique (1 ), ledit second circuit (4)2. Device according to claim 1 wherein said second circuit (4) comprises a pump (36) located on a branch (34) provided with said component (5) of the power supply circuit of the electric machine (1), said second circuit (4) 25 comprenant en outre une branche de contournement (84) dudit composant (5) du circuit d'alimentation de la machine électrique (1 ), ladite branche étant munie d'une vanne à débit réglable. Further comprising a bypass branch (84) of said component (5) of the power supply circuit of the electric machine (1), said branch being provided with an adjustable flow valve. 3. Dispositif selon la revendication 2 dans lequel ledit second circuit (4)3. Device according to claim 2 wherein said second circuit (4) 30 est en outre configuré pour faire boucler ledit fluide caloporteur à travers ledit composant (5) du circuit d'alimentation de la machine électrique (1 ) et ladite branche de contournement (84) à l'aide de ladite première pompe (36). 30 is further configured to loop said heat transfer fluid through said component (5) of the power supply circuit of the electric machine (1) and said bypass branch (84) by means of said first pump (36). 4. Dispositif selon l'une quelconque des revendications précédentes dans lequel lesdits premier et second circuits (3, 4) sont interconnectés. 4. Device according to any one of the preceding claims wherein said first and second circuits (3, 4) are interconnected. 5. Dispositif selon la revendication 4 dans lequel lesdits premier et second circuits (3, 4) comprennent une première branche (80) munie de ladite machine électrique (1 ) et une seconde branche (82) munie dudit composant (5) du circuit d'alimentation de ladite machine électrique (1 ), lesdites branches (80, 82) étant montées en dérivation d'un échangeur de chaleur (14), dit premier échangeur de face avant. 5. Device according to claim 4 wherein said first and second circuits (3, 4) comprise a first leg (80) provided with said electrical machine (1) and a second leg (82) provided with said component (5) of the circuit. supplying said electric machine (1), said branches (80, 82) being mounted in shunt of a heat exchanger (14), said first front-end exchanger. 6. Dispositif selon la revendication 5 dans lequel lesdits premier et second circuits (3, 4) sont configurés pour permettre une circulation en boucle dudit fluide caloporteur entre ladite première branche (80) et tout ou partie dudit second circuit (4). 6. Device according to claim 5 wherein said first and second circuits (3, 4) are configured to allow a loop circulation of said heat transfer fluid between said first branch (80) and all or part of said second circuit (4). 7. Dispositif selon l'une quelconque des revendications 5 ou 6 dans lequel ladite première branche (80) comprend en outre un stockeur de chaleur (100), configuré pour stocker de la chaleur provenant dudit fluide caloporteur et/ou restituer de la chaleur audit fluide caloporteur. 7. Device according to any one of claims 5 or 6 wherein said first branch (80) further comprises a heat store (100), configured to store heat from said coolant and / or return heat to said coolant. 8. Dispositif selon la revendication 7 dans lequel ladite première branche (80) comprend en outre un générateur de chaleur (98), configuré pour réchauffer ledit fluide caloporteur. 8. Device according to claim 7 wherein said first leg (80) further comprises a heat generator (98), configured to heat said heat transfer fluid. 9. Dispositif selon la revendication 8 dans lequel lesdits premier et second circuits (3, 4) sont configurés pour que ledit générateur de chaleur (98) et ledit stockeur (100) soient parcourus en série dans cet ordre par ledit fluide caloporteur. 9. Device according to claim 8 wherein said first and second circuits (3, 4) are configured so that said heat generator (98) and said storage (100) are traversed in series in that order by said heat transfer fluid. 10. Dispositif selon l'une quelconque des revendications précédentes dans lequel ledit circuit de fluide réfrigérant (3) comprend une première branche (46) munie d'un échangeur de chaleur (44), dit second échangeur de face avant, ledit dispositif étant configuré pour que ledit second échangeur de face avant (44) échange de la chaleur avec un flux d'air externe, et une seconde branche (48) munie dudit échangeur apte à fonctionner en condenseur, lesdites première et seconde branches (46, 48) dudit circuit de fluide réfrigérant étant montées en dérivation entre une sortie d'un compresseur (50) dudit circuit de fluide réfrigérant et un nœud (53) dudit circuit de fluide réfrigérant. 10. Device according to any one of the preceding claims wherein said refrigerant circuit (3) comprises a first leg (46) provided with a heat exchanger (44), said second front-end exchanger, said device being configured for said second front-end heat exchanger (44) heat exchange with an external air flow, and a second leg (48) provided with said condenser-capable heat exchanger, said first and second legs (46, 48) of said refrigerant circuit being in bypass between an output a compressor (50) of said refrigerant circuit and a node (53) of said refrigerant circuit. 1 1 . Dispositif selon la revendication 10 dans lequel ledit second échangeur de face avant (44) est apte à fonctionner en condenseur et/ou en évaporateur. 1 1. Device according to claim 10 wherein said second front face exchanger (44) is operable in condenser and / or evaporator. 12. Dispositif selon l'une quelconque des revendications 10 ou 1 1 dans lequel ledit circuit de fluide réfrigérant (2) comprend une troisième branche (54), munie d'un échangeur de chaleur (56), configuré pour refroidir l'habitacle du véhicule, ladite troisième branche étant montée entre une entrée du compresseur (50) et le nœud (53) dudit circuit fluide réfrigérant. 12. Device according to any one of claims 10 or 1 1 wherein said refrigerant circuit (2) comprises a third leg (54), provided with a heat exchanger (56), configured to cool the passenger compartment. vehicle, said third leg being mounted between an inlet of the compressor (50) and the node (53) of said refrigerant circuit. 13. Dispositif selon la revendication 12 dans lequel ledit circuit de fluide réfrigérant comprend une quatrième branche (58) munie dudit échangeur caloporteur/réfrigérant (26), ladite quatrième branche étant montée en dérivation de ladite troisième branche, entre l'entrée du compresseur (50) et le nœud (53) dudit circuit de fluide réfrigérant. 13. Device according to claim 12 wherein said refrigerant circuit comprises a fourth leg (58) provided with said heat exchanger / coolant (26), said fourth leg being mounted in branch of said third branch, between the inlet of the compressor ( 50) and the node (53) of said refrigerant circuit. 14. Dispositif selon l'une quelconque des revendications 12 ou 13 dans lequel ledit circuit de fluide réfrigérant (2) comprend une cinquième branche (64) permettant de relier une entrée dudit compresseur (50) et ledit second échangeur de face avant (44), ledit circuit de fluide réfrigérant (2) étant en outre configuré pour autoriser, dans une première configuration dudit circuit de fluide réfrigérant (2), la circulation dudit fluide réfrigérant dans un premier sens à travers ledit second échangeur de face avant (44), en contournant ladite cinquième branche (64), et dans une seconde configuration dudit circuit de fluide réfrigérant (2), la circulation du fluide réfrigérant dans ledit second échangeur de face avant (44) dans le sens opposé, en empruntant ladite seconde branche (64). 14. Device according to any one of claims 12 or 13 wherein said refrigerant circuit (2) comprises a fifth branch (64) for connecting an inlet of said compressor (50) and said second front-end exchanger (44). said refrigerant circuit (2) being further configured to allow, in a first configuration of said refrigerant circuit (2), the circulation of said refrigerant in a first direction through said second front-end exchanger (44), circumventing said fifth leg (64), and in a second configuration of said refrigerant circuit (2), circulating refrigerant in said second front face exchanger (44) in the opposite direction, through said second leg (64); ). 15. Dispositif selon l'une quelconque des revendications 12 à 14 dans lequel ledit circuit de fluide réfrigérant (2) est configuré pour autoriser une circulation indépendante dudit fluide réfrigérant dans lesdites seconde, troisième et quatrième branches (48, 54, 58) dudit circuit de fluide réfrigérant (2). 15. Device according to any one of claims 12 to 14 wherein said refrigerant circuit (2) is configured to allow independent circulation of said refrigerant in said second, third and fourth branches (48, 54, 58) of said circuit refrigerant fluid (2). 16. Dispositif selon l'une quelconque des revendications 10 à 15 dans lequel ledit circuit de fluide réfrigérant comprend un accumulateur (62) en entrée du compresseur (50). 16. Device according to any one of claims 10 to 15 wherein said refrigerant circuit comprises an accumulator (62) at the input of the compressor (50).
PCT/EP2014/064740 2013-07-26 2014-07-09 Thermal conditioning device for a motor vehicle comprising an electric machine used for driving said vehicle Ceased WO2015010909A1 (en)

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FR3008930A1 (en) 2015-01-30

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