WO2019220036A1 - Circuit for the thermal management of a hybrid or electric vehicle - Google Patents
Circuit for the thermal management of a hybrid or electric vehicle Download PDFInfo
- Publication number
- WO2019220036A1 WO2019220036A1 PCT/FR2019/051047 FR2019051047W WO2019220036A1 WO 2019220036 A1 WO2019220036 A1 WO 2019220036A1 FR 2019051047 W FR2019051047 W FR 2019051047W WO 2019220036 A1 WO2019220036 A1 WO 2019220036A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat exchanger
- radiator
- branch
- loop
- heat
- 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
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Classifications
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- 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
-
- 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
- B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
-
- 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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
- B60H1/32281—Cooling devices using compression characterised by refrigerant circuit configurations comprising a single secondary circuit, e.g. at evaporator or condenser side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
- F01P5/043—Pump reversing arrangements
-
- 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
- B60H2001/00928—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 a secondary circuit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/24—Hybrid vehicles
Definitions
- the invention relates to the field of motor vehicles and more particularly to a thermal management circuit for a hybrid or electric motor vehicle.
- the thermal management of the passenger compartment is generally managed by an invertible air conditioning loop.
- Invertible means that this air conditioning loop can operate in a cooling mode to cool the air to the passenger compartment and in a heat pump mode to heat the air to the passenger compartment.
- This reversible air conditioning loop may also include a bypass to manage the temperature of the batteries of the electric or hybrid vehicle and the electric motor. It is thus possible to heat or cool the batteries and / or the electric motor through the reversible air conditioning loop. However, it is not possible to at least partially manage the temperature of the batteries and / or the electric motor without using the reversible air conditioning loop.
- a known solution is to use a second circulation loop distinct from the air conditioning loop and inside which circulates a heat transfer fluid.
- the air conditioning loop and the second circulation loop are connected to each other by a two-fluid heat exchanger to allow heat exchange between the two loops.
- these elements can be arranged on parallel branches, one of the other of the second circulation loop.
- the connection between the air conditioning loop and the second circulation loop and its branches can be complex and require many valves, for example three-way valve type or even four-way valve that are expensive.
- An object of the present invention is therefore to at least partially overcome the disadvantages of the prior art and to provide an improved thermal management circuit.
- the present invention thus relates to a thermal management circuit for a hybrid or electric vehicle, said thermal management circuit comprising a first reversible air conditioning loop in which a refrigerant circulates and comprising a two-fluid heat exchanger arranged jointly on a second circulation loop. a heat transfer fluid,
- the second circulation loop of a coolant comprising:
- a main loop comprising a first pump, a first heat exchanger and the bifluid heat exchanger, the main loop further comprising:
- a first branch branch comprising a first radiator intended to be traversed by an external air flow and connected in parallel with the two-fluid heat exchanger between a first junction point disposed upstream of said two-fluid heat exchanger and a second point of junction disposed downstream of said two-fluid heat exchanger
- a first device for redirecting the heat transfer fluid from the first heat exchanger to the two-fluid heat exchanger or to the first radiator
- a secondary loop comprising a second pump, a second heat exchanger and a second radiator intended to be traversed by an external air flow
- a second branch branch connecting a third junction point disposed on the secondary loop upstream of the second radiator, between said second radiator and the second heat exchanger and a fourth junction point disposed on the main branch downstream of the first heat exchanger; heat, between said first heat exchanger and the first junction point,
- a third branch branch connecting a fifth junction point disposed on the secondary loop downstream of the second radiator, between said second radiator and the second heat exchanger and a sixth junction point disposed on the first branch branch downstream of the first radiator, between said first radiator and the second junction point, the second circulation loop of a heat transfer fluid comprising a second device for redirecting the heat transfer fluid from the second heat exchanger to the second radiator or to the heat exchanger bifluid via the second branch branch.
- the first redirection device is a three-way valve disposed at the first junction point.
- the second redirection device is a three-way valve disposed at the third junction point.
- the main loop comprises an electric heating device of the coolant disposed upstream of the first heat exchanger.
- the thermal management circuit is configured to operate according to a first cooling mode in which:
- the first redirection device is configured to redirect the heat transfer fluid from the first heat exchanger to the heat exchanger; bifluid heat and prevent the circulation of heat transfer fluid in the first branch branch, and
- the second redirection device is configured to redirect the heat transfer fluid from the second heat exchanger to the second radiator and prevent the circulation of heat transfer fluid in the second branch branch.
- the thermal management circuit is configured to operate according to a second cooling mode in which:
- the first redirection device is configured to redirect the heat transfer fluid from the first heat exchanger to the first radiator and to prevent the circulation of the heat transfer fluid in the two-fluid heat exchanger, and
- the second redirection device is configured to redirect the heat transfer fluid from the second heat exchanger to the second radiator and prevent the circulation of heat transfer fluid in the second branch branch.
- the thermal management circuit is configured to operate according to a heat recovery mode in which:
- the second redirection device is configured to redirect the heat transfer fluid from the second heat exchanger to the two-fluid heat exchanger via the second bypass branch and to prevent the circulation of the coolant towards the second radiator, and
- the first redirection device is configured to redirect the heat transfer fluid from the fourth connection point to the two-fluid heat exchanger and to prevent the heat transfer fluid from circulating towards the first radiator.
- the invention also relates to a motor vehicle comprising such a thermal management circuit.
- FIG. 1 shows a schematic representation of a thermal management circuit according to a first embodiment
- FIGS. 2a to 2c show the thermal management circuit of FIG. 1 according to different modes of operation.
- first element or second element as well as first parameter and second parameter or else first criterion and second criterion, etc.
- it is a simple indexing to differentiate and name elements or parameters or criteria close but not identical.
- This indexing does not imply a priority of one element, parameter or criterion with respect to another, and it is easy to interchange such denominations without departing from the scope of the present description.
- This indexing does not imply either an order in time for example to appreciate this or that criterion.
- upstream means that one element is placed before another relative to the direction of flow of a fluid.
- downstream is understood to mean that one element is placed after another relative to the direction of circulation of the fluid.
- FIG. 1 shows a thermal management circuit 1 of a hybrid or electric vehicle.
- This thermal management circuit 1 (shown partially) comprises a first reversible air conditioning loop A in which a refrigerant circulates and having a bifluid heat exchanger 7 arranged jointly on a second circulation loop B of a heat transfer fluid.
- Invertible means that this air conditioning loop can operate in a cooling mode to cool the air to the passenger compartment and in a heat pump mode to heat the air to the passenger compartment.
- This first reversible air conditioning loop A can be of any type known to those skilled in the art.
- the first reversible air conditioning loop A may in particular comprise, upstream of the two-fluid heat exchanger 7, an expansion device 17.
- This expansion device 17 may allow a loss of pressure of the refrigerant fluid in order to cool the heat transfer fluid of the second loop.
- circulation device B at the level of the two-fluid heat exchanger 7.
- This expansion device 17 can also be bypassed or allow the refrigerant to flow without loss of pressure in order to heat the heat transfer fluid of the second circulation loop B at the level of the bifluid heat exchanger 7.
- the second circulation loop B more particularly comprises a main loop B1 and a secondary loop B2 connected in parallel with respect to each other.
- the main loop B1 comprises in particular a first pump 3, a first heat exchanger 5 and the bifluid heat exchanger 7.
- the first heat exchanger 5 may more particularly be a heat exchanger allowing heat energy exchanges with the batteries.
- the main loop B 1 further comprises a first branch B3 and a first redirection device 31.
- the first branch B 3 includes a first radiator 13 to be traversed by an external air flow 100 and connected in parallel with the bifluid heat exchanger 7. More specifically, the first branch B3 branch is connected between a first junction point 21 disposed upstream of the bifluid heat exchanger 7 and a second junction point 22 disposed downstream of the bifluid heat exchanger 7.
- the first redirection device 31 allows the heat transfer fluid to be redirected from the first heat exchanger 5 to the bifluid heat exchanger 7 or to the first radiator 13.
- This first redirection device 31 can notably be a three-way valve arranged at the first junction point 21.
- the secondary loop B2 comprises meanwhile a second pump 9, a second heat exchanger 11 and a second radiator 15 to be traversed by an external air flow 100.
- the second heat exchanger 11 may more particularly be a heat exchanger. heat allowing the exchange of heat energy with the electric motor.
- the first 13 and the second 15 heat exchanger may for example be arranged side by side on the front of the motor vehicle.
- the main loop B1 and the secondary loop B2 are connected to each other by a second branch branch B4 and a third branch branch B5.
- the second branch B4 more particularly connects a third junction point 23 to a fourth junction point 24.
- the third junction point 23 is disposed on the secondary loop B2 upstream of the second radiator 15, between said second radiator 15 and the second second heat exchanger 11.
- the fourth junction point 24 is in turn disposed on the main branch B1 downstream of the first heat exchanger 5, between said first heat exchanger 5 and the first junction point 21.
- the third branch B5 more particularly connects a fifth junction point 25 to a sixth junction point 26.
- the fifth junction point 25 is disposed on the secondary loop B2 downstream of the second radiator 15, between said second radiator 15 and the second second heat exchanger 11.
- the sixth junction point 26 is disposed on the first branch branch B3 downstream of the first radiator 13, between said first radiator 13 and the second junction point 21.
- the second circulation loop B also includes a second device 32 for redirecting the heat transfer fluid.
- This second redirection device 32 allows the heat transfer fluid to be redirected from the second heat exchanger 11 to the second radiator 15 or to the two-fluid heat exchanger 7 via the second branch B4.
- This second redirection device 32 may in particular be a three-way valve disposed at the third junction point 23.
- the first pump 3 is disposed upstream of the first heat exchanger 5, between said first heat exchanger 5 and the second junction point 22. It is however quite possible to imagine a other positioning of this first pump 3, for example downstream of the first heat exchanger 5, between said first heat exchanger 5 and the fourth junction point 24.
- the second pump 9 is disposed upstream of the second heat exchanger 11, between said second heat exchanger 11 and the fifth junction point 25.
- this second pump 9 for example downstream of the second heat exchanger 11, between said second heat exchanger 11 and the third junction point 23.
- the thermal management circuit 1 can in particular operate according to different modes of operation illustrated in FIGS. 2a to 2c. In these figures, only the elements in which the heat transfer fluid circulates are represented. In addition arrows indicate the direction of circulation of the coolant.
- the thermal management circuit 1 can in particular be configured to operate according to a first cooling mode illustrated in FIG. 2a.
- the first redirection device 31 is configured to firstly redirect the heat transfer fluid from the first heat exchanger 5 to the bifluid heat exchanger 7 and secondly to prevent the circulation of the fluid. coolant in the first bypass branch B3.
- the second redirection device 32 is in turn configured to firstly redirect the heat transfer fluid from the second heat exchanger 11 to the second radiator 15 and secondly to prevent the circulation of the coolant in the second branch branch B4.
- the coolant put in motion by the first pump 3 circulates in the first heat exchanger 5 and in the bifluid heat exchanger 7.
- the coolant recovers heat energy by cooling the batteries for example.
- the coolant transfers this heat energy to the coolant of the first reversible air conditioning loop A.
- the heat transfer fluid set in motion by the second pump 9 circulates in the second heat exchanger 11 and in the first radiator 15
- the heat transfer fluid recovers heat energy cooling for example the electric motor.
- the heat transfer fluid transfers this heat energy to the external air flow 100.
- This first cooling mode allows for example to independently cool the batteries at the first heat exchanger 5 and the electric motor at the second heat exchanger 11.
- the main loop B 1 and the secondary loop B2 remain independent one of the other.
- the heat energy of the batteries is transferred to the first air-conditioning loop A and that of the electric motor to the second radiator 13.
- the first air-conditioning loop A may in turn operate in heat pump mode or in air-conditioning mode.
- the thermal management circuit 1 can also be configured to operate according to a second cooling mode illustrated in FIG. 2b.
- the first redirection device 31 is configured on the one hand to redirect the heat transfer fluid from the first heat exchanger 5 to the first radiator 13 and on the other hand to prevent the circulation of the coolant in the heat transfer medium. bifluid heat exchanger.
- the second redirection device 32 is in turn configured to firstly redirect the heat transfer fluid from the second heat exchanger 11 to the second radiator 15 and secondly to prevent the circulation of the coolant in the second branch branch B4.
- the heat transfer fluid set in motion by the first pump 3 circulates in the first heat exchanger 5 and is redirected towards the first radiator 13.
- the heat transfer fluid recovers from heat energy by cooling the batteries for example. This heat energy is then released into the external air flow 100 at the level of the first radiator 13.
- the heat transfer fluid set in motion by the second pump 9 circulates in the second heat exchanger 11 and in the second radiator 15.
- the fluid coolant recovers heat energy by cooling for example the electric motor. This heat energy is then released into the external air flow 100 at the second radiator 15.
- This second cooling mode also allows the batteries to be independently cooled at the level of the first heat exchanger 5 and the electric motor at the level of the second heat exchanger 11.
- the heat energy of the batteries and the electric motor is transferred respectively to the first heat exchanger 13. and the second radiator.
- the main loop B 1 and the secondary loop B2 remain independent of each other.
- the first air-conditioning loop A can itself be switched off or can also be operated in heat pump mode or in air-conditioning mode independently of the second circulation loop B.
- the thermal management circuit 1 can also be configured to operate according to a heat recovery mode illustrated in FIG. 2c.
- the second redirection device 32 is configured to firstly redirect the heat transfer fluid from the second heat exchanger 11 to the bifluid heat exchanger 7 via the second branch B4 and d on the other hand to prevent the circulation of the coolant towards the second radiator 15.
- the first redirection device 31 is in turn configured to firstly redirect the heat transfer fluid from the fourth junction point 24, that is to say both from the first heat exchanger 5 and the second bypass branch B4, to the two-fluid heat exchanger 7 and on the other hand prevent the circulation of the heat transfer fluid to the first radiator 13.
- the heat transfer fluid set in motion by the second pump 9 circulates in the second heat exchanger 11 and is redirected to the two-fluid heat exchanger 7 via the second branch B4.
- the coolant recovers heat energy by cooling for example the electric motor.
- the heat transfer fluid set in motion by the first pump 3 circulates in the first heat exchanger 5.
- the heat transfer fluid from the first heat exchanger 5 mixes with that from the second heat exchanger 11 before arriving at the bifluid heat exchanger 7.
- the coolant recovers heat energy by cooling, for example, the batteries.
- the heat transfer fluid from both the first 5 and the second 11 heat exchanger transfers heat energy to the first air conditioning loop A.
- part of the coolant returns to the secondary loop B2 via the third branch B5.
- This heat recovery mode makes it possible, for example, to co-cool the batteries at the level of the first heat exchanger 5 and the electric motor at the level of the second heat exchanger 11.
- the heat energy of the batteries and the electric motor is transferred in full to the bifluid heat exchanger 7 to be transmitted to the first air conditioning loop A.
- the first air conditioning loop A operates in heat pump mode to use the heat energy recovered from the second circulation loop B to warm the cabin.
- the main loop B1 may also include an electric heater 19 of the heat transfer fluid.
- This electric heating device 19 for example a positive temperature coefficient resistor, is arranged upstream of the first heat exchanger 5, between the first heat exchanger 5 and the heat exchanger 7.
- the device electric heating device 19 is arranged between the second junction point 22 and the first heat exchanger 5.
- This electric heating device 19 may for example be used to heat the heat transfer fluid upstream of the first heat exchanger 5 in order, for example, to to allow the batteries to reach their optimum operating temperature, especially in the case of use in cold weather.
- the thermal management circuit 1 allows operation according to different operating modes, a decoupling of the thermal management between the main loop B1 and the secondary loop B2 of the second circulation loop B Moreover, these different modes of operation can be implemented by means of a limited number of valves, either shut-off valves or three-way valves, which makes it possible to limit the production costs.
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
CIRCUIT DE GESTION THERMIQUE D’UN VEHICULE HYBRIDE OU THERMAL MANAGEMENT CIRCUIT OF A HYBRID VEHICLE OR
ELECTRIQUE ELECTRIC
L’invention se rapporte au domaine des véhicules automobiles et plus particulièrement à un circuit de gestion thermique pour véhicule automobile hybride ou électrique. The invention relates to the field of motor vehicles and more particularly to a thermal management circuit for a hybrid or electric motor vehicle.
Dans les véhicules électriques et hybrides, la gestion thermique de l’habitacle est généralement gérée par une boucle de climatisation inversible. Par inversible, on entend que cette boucle de climatisation peut fonctionner dans un mode de refroidissement afin de refroidir l’air à destination de l’habitacle et dans un mode pompe à chaleur afin de réchauffer l’air à destination de l’habitacle. Cette boucle de climatisation inversible peut également comporter une dérivation afin de gérer la température des batteries du véhicule électrique ou hybride ainsi que le moteur électrique. Il est ainsi possible de réchauffer ou refroidir les batteries et/ou le moteur électrique grâce à la boucle de climatisation inversible. Cependant, il n’est pas possible de gérer au moins partiellement la température des batteries et/ou du moteur électrique sans utiliser la boucle de climatisation inversible. Ainsi, lorsque par exemple l’habitacle n’a pas besoin d’être réchauffé ou refroidi, il est tout de même nécessaire de mettre en fonctionnement complètement la boucle de climatisation inversible pour réchauffer ou refroidir les batteries et/ou le moteur électrique. Cela entraîne une consommation électrique qui peut être trop importante et donc peut impacter l’autonomie du véhicule électrique ou hybride. In electric and hybrid vehicles, the thermal management of the passenger compartment is generally managed by an invertible air conditioning loop. Invertible means that this air conditioning loop can operate in a cooling mode to cool the air to the passenger compartment and in a heat pump mode to heat the air to the passenger compartment. This reversible air conditioning loop may also include a bypass to manage the temperature of the batteries of the electric or hybrid vehicle and the electric motor. It is thus possible to heat or cool the batteries and / or the electric motor through the reversible air conditioning loop. However, it is not possible to at least partially manage the temperature of the batteries and / or the electric motor without using the reversible air conditioning loop. Thus, when for example the cockpit does not need to be heated or cooled, it is still necessary to fully operate the reversible air conditioning loop to heat or cool the batteries and / or the electric motor. This leads to an electrical consumption that may be too important and therefore may impact the autonomy of the electric or hybrid vehicle.
Une solution connue est d’utiliser une deuxième boucle de circulation distincte de la boucle de climatisation et à l’intérieur de laquelle circule un fluide caloporteur. La boucle de climatisation et la deuxième boucle de circulation sont reliées l’une à l’autre par un échangeur de chaleur bifluide afin de permettre les échanges de chaleur entre les deux boucles. Afin de dissocier la gestion thermique des batteries et du moteur électrique, ces éléments peuvent être disposés sur des branches parallèles l’une de l’autre de la deuxième boucle de circulation. Cependant, la connexion entre la boucle de climatisation et la deuxième boucle de circulation et ses branches peut être complexe et nécessiter de nombreuses vannes, par exemple de type vanne trois-voies voire même vanne quatre-voies qui sont onéreuses. A known solution is to use a second circulation loop distinct from the air conditioning loop and inside which circulates a heat transfer fluid. The air conditioning loop and the second circulation loop are connected to each other by a two-fluid heat exchanger to allow heat exchange between the two loops. In order to separate the thermal management of the batteries and the electric motor, these elements can be arranged on parallel branches, one of the other of the second circulation loop. However, the connection between the air conditioning loop and the second circulation loop and its branches can be complex and require many valves, for example three-way valve type or even four-way valve that are expensive.
Un des buts de la présente invention est donc de remédier au moins partiellement aux inconvénients de l'art antérieur et de proposer un circuit de gestion thermique amélioré. An object of the present invention is therefore to at least partially overcome the disadvantages of the prior art and to provide an improved thermal management circuit.
La présente invention concerne donc un circuit de gestion thermique pour véhicule hybride ou électrique, ledit circuit de gestion thermique comportant une première boucle de climatisation inversible dans laquelle circule un fluide réfrigérant et comportant un échangeur de chaleur bifluide agencé conjointement sur une deuxième boucle de circulation d’un fluide caloporteur, The present invention thus relates to a thermal management circuit for a hybrid or electric vehicle, said thermal management circuit comprising a first reversible air conditioning loop in which a refrigerant circulates and comprising a two-fluid heat exchanger arranged jointly on a second circulation loop. a heat transfer fluid,
la deuxième boucle de circulation d’un fluide caloporteur comprenant : the second circulation loop of a coolant comprising:
• une boucle principale comportant une première pompe, un premier échangeur de chaleur et l’échangeur de chaleur bifluide, la boucle principale comportant en outre : A main loop comprising a first pump, a first heat exchanger and the bifluid heat exchanger, the main loop further comprising:
une première branche de dérivation comportant un premier radiateur destiné à être traversé par un flux d’air externe et connecté en parallèle de l’échangeur de chaleur bifluide entre un premier point de jonction disposé en amont dudit échangeur de chaleur bifluide et un deuxième point de jonction disposé en aval dudit échangeur de chaleur bifluide, a first branch branch comprising a first radiator intended to be traversed by an external air flow and connected in parallel with the two-fluid heat exchanger between a first junction point disposed upstream of said two-fluid heat exchanger and a second point of junction disposed downstream of said two-fluid heat exchanger,
un premier dispositif de redirection du fluide caloporteur en provenance du premier échangeur de chaleur vers l’échangeur de chaleur bifluide ou vers le premier radiateur, a first device for redirecting the heat transfer fluid from the first heat exchanger to the two-fluid heat exchanger or to the first radiator,
• une boucle secondaire comportant une deuxième pompe, un deuxième échangeur de chaleur et un deuxième radiateur destiné à être traversé par un flux d’air externe, A secondary loop comprising a second pump, a second heat exchanger and a second radiator intended to be traversed by an external air flow,
la boucle principale et la boucle secondaire étant connectées l’une à l’autre par : • une deuxième branche de dérivation reliant un troisième point de jonction disposé sur la boucle secondaire en amont du deuxième radiateur, entre ledit deuxième radiateur et le deuxième échangeur de chaleur et un quatrième point de jonction disposé sur la branche principale en aval du premier échangeur de chaleur, entre ledit premier échangeur de chaleur et le premier point de jonction,the main loop and the secondary loop being connected to each other by: A second branch branch connecting a third junction point disposed on the secondary loop upstream of the second radiator, between said second radiator and the second heat exchanger and a fourth junction point disposed on the main branch downstream of the first heat exchanger; heat, between said first heat exchanger and the first junction point,
• une troisième branche de dérivation reliant un cinquième point de jonction disposé sur la boucle secondaire en aval du deuxième radiateur, entre ledit deuxième radiateur et le deuxième échangeur de chaleur et un sixième point de jonction disposé sur la première branche de dérivation en aval du premier radiateur, entre ledit premier radiateur et le deuxième point de jonction, la deuxième boucle de circulation d’un fluide caloporteur comprenant un deuxième dispositif de redirection du fluide caloporteur en provenance du deuxième échangeur de chaleur vers le deuxième radiateur ou vers l’échangeur de chaleur bifluide via la deuxième branche de dérivation. A third branch branch connecting a fifth junction point disposed on the secondary loop downstream of the second radiator, between said second radiator and the second heat exchanger and a sixth junction point disposed on the first branch branch downstream of the first radiator, between said first radiator and the second junction point, the second circulation loop of a heat transfer fluid comprising a second device for redirecting the heat transfer fluid from the second heat exchanger to the second radiator or to the heat exchanger bifluid via the second branch branch.
Selon un aspect de l’invention, le premier dispositif de redirection est une vanne trois-voies disposée au niveau du premier point de jonction. According to one aspect of the invention, the first redirection device is a three-way valve disposed at the first junction point.
Selon un autre aspect de l’invention, le deuxième dispositif de redirection est une vanne trois-voies disposée au niveau du troisième point de jonction. According to another aspect of the invention, the second redirection device is a three-way valve disposed at the third junction point.
Selon un autre aspect de l’invention, la boucle principale comporte un dispositif de chauffage électrique du fluide caloporteur disposé en amont du premier échangeur de chaleur. According to another aspect of the invention, the main loop comprises an electric heating device of the coolant disposed upstream of the first heat exchanger.
Selon un autre aspect de l’invention, le circuit de gestion thermique est configuré pour fonctionner selon un premier mode de refroidissement dans lequel : According to another aspect of the invention, the thermal management circuit is configured to operate according to a first cooling mode in which:
• le premier dispositif de redirection est configuré pour rediriger le fluide caloporteur en provenance du premier échangeur de chaleur vers l’échangeur de chaleur bifluide et empêcher la circulation du fluide caloporteur dans la première branche de dérivation, et The first redirection device is configured to redirect the heat transfer fluid from the first heat exchanger to the heat exchanger; bifluid heat and prevent the circulation of heat transfer fluid in the first branch branch, and
• le deuxième dispositif de redirection est configuré pour rediriger le fluide caloporteur en provenance du deuxième échangeur de chaleur vers le deuxième radiateur et empêcher la circulation du fluide caloporteur dans la deuxième branche de dérivation. • The second redirection device is configured to redirect the heat transfer fluid from the second heat exchanger to the second radiator and prevent the circulation of heat transfer fluid in the second branch branch.
Selon un autre aspect de l’invention, le circuit de gestion thermique est configuré pour fonctionner selon un deuxième mode de refroidissement dans lequel : According to another aspect of the invention, the thermal management circuit is configured to operate according to a second cooling mode in which:
• le premier dispositif de redirection est configuré pour rediriger le fluide caloporteur en provenance du premier échangeur de chaleur vers le premier radiateur et empêcher la circulation du fluide caloporteur dans l’échangeur de chaleur bifluide, et The first redirection device is configured to redirect the heat transfer fluid from the first heat exchanger to the first radiator and to prevent the circulation of the heat transfer fluid in the two-fluid heat exchanger, and
• le deuxième dispositif de redirection est configuré pour rediriger le fluide caloporteur en provenance du deuxième échangeur de chaleur vers le deuxième radiateur et empêcher la circulation du fluide caloporteur dans la deuxième branche de dérivation. • The second redirection device is configured to redirect the heat transfer fluid from the second heat exchanger to the second radiator and prevent the circulation of heat transfer fluid in the second branch branch.
Selon un autre aspect de l’invention, le circuit de gestion thermique est configuré pour fonctionner selon un mode de récupération de chaleur dans lequel : According to another aspect of the invention, the thermal management circuit is configured to operate according to a heat recovery mode in which:
• le deuxième dispositif de redirection est configuré pour rediriger le fluide caloporteur en provenance du deuxième échangeur de chaleur vers l’échangeur de chaleur bifluide via la deuxième branche de dérivation et empêcher la circulation du fluide caloporteur vers le deuxième radiateur, et The second redirection device is configured to redirect the heat transfer fluid from the second heat exchanger to the two-fluid heat exchanger via the second bypass branch and to prevent the circulation of the coolant towards the second radiator, and
• le premier dispositif de redirection est configuré pour rediriger le fluide caloporteur en provenance du quatrième point de jonction vers l’échangeur de chaleur bifluide et empêcher la circulation du fluide caloporteur vers le premier radiateur. L’invention porte également sur un véhicule automobile comprenant un tel circuit de gestion thermique. The first redirection device is configured to redirect the heat transfer fluid from the fourth connection point to the two-fluid heat exchanger and to prevent the heat transfer fluid from circulating towards the first radiator. The invention also relates to a motor vehicle comprising such a thermal management circuit.
D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lecture de la description suivante, donnée à titre d'exemple illustratif et non limitatif, et des dessins annexés parmi lesquels : Other features and advantages of the invention will emerge more clearly on reading the following description, given by way of illustrative and nonlimiting example, and the appended drawings among which:
• la figure 1 montre une représentation schématique d'un circuit de gestion thermique selon un premier mode de réalisation, FIG. 1 shows a schematic representation of a thermal management circuit according to a first embodiment,
• les figures 2a à 2c montrent le circuit de gestion thermique de la figure 1 selon différents modes de fonctionnement. FIGS. 2a to 2c show the thermal management circuit of FIG. 1 according to different modes of operation.
Sur les différentes figures, les éléments identiques portent les mêmes numéros de référence. In the different figures, the identical elements bear the same reference numbers.
Les réalisations suivantes sont des exemples. Bien que la description se réfère à un ou plusieurs modes de réalisation, ceci ne signifie pas nécessairement que chaque référence concerne le même mode de réalisation, ou que les caractéristiques s'appliquent seulement à un seul mode de réalisation. De simples caractéristiques de différents modes de réalisation peuvent également être combinées et/ou interchangées pour fournir d'autres réalisations. The following achievements are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments may also be combined and / or interchanged to provide other embodiments.
Dans la présente description, on peut indexer certains éléments ou paramètres, comme par exemple premier élément ou deuxième élément ainsi que premier paramètre et second paramètre ou encore premier critère et deuxième critère etc. Dans ce cas, il s’agit d’un simple indexage pour différencier et dénommer des éléments ou paramètres ou critères proches mais non identiques. Cette indexation n’implique pas une priorité d’un élément, paramètre ou critère par rapport à un autre et on peut aisément interchanger de telles dénominations sans sortir du cadre de la présente description. Cette indexation n’implique pas non plus un ordre dans le temps par exemple pour apprécier tel ou tel critère. Dans la présente description, on entend par « en amont » qu’un élément est placé avant un autre par rapport au sens de circulation d'un fluide. A contrario, on entend par « en aval » qu’un élément est placé après un autre par rapport au sens de circulation du fluide. In the present description, it is possible to index certain elements or parameters, for example first element or second element as well as first parameter and second parameter or else first criterion and second criterion, etc. In this case, it is a simple indexing to differentiate and name elements or parameters or criteria close but not identical. This indexing does not imply a priority of one element, parameter or criterion with respect to another, and it is easy to interchange such denominations without departing from the scope of the present description. This indexing does not imply either an order in time for example to appreciate this or that criterion. In the present description, the term "upstream" means that one element is placed before another relative to the direction of flow of a fluid. On the other hand, "downstream" is understood to mean that one element is placed after another relative to the direction of circulation of the fluid.
La figure 1 montre un circuit de gestion thermique 1 d’un véhicule hybride ou électrique. Ce circuit de gestion thermique 1 (représenté partiellement) comporte une première boucle de climatisation inversible A dans laquelle circule un fluide réfrigérant et comportant un échangeur de chaleur bifluide 7 agencé conjointement sur une deuxième boucle de circulation B d’un fluide caloporteur. Par inversible, on entend que cette boucle de climatisation peut fonctionner dans un mode de refroidissement afin de refroidir l’air à destination de l’habitacle et dans un mode pompe à chaleur afin de réchauffer l’air à destination de l’habitacle. Cette première boucle de climatisation inversible A peut être de tout type connu de l’homme du métier. Figure 1 shows a thermal management circuit 1 of a hybrid or electric vehicle. This thermal management circuit 1 (shown partially) comprises a first reversible air conditioning loop A in which a refrigerant circulates and having a bifluid heat exchanger 7 arranged jointly on a second circulation loop B of a heat transfer fluid. Invertible means that this air conditioning loop can operate in a cooling mode to cool the air to the passenger compartment and in a heat pump mode to heat the air to the passenger compartment. This first reversible air conditioning loop A can be of any type known to those skilled in the art.
La première boucle de climatisation inversible A peut notamment comporter en amont de l’échangeur de chaleur bifluide 7 un dispositif de détente 17. Ce dispositif de détente 17 peut permettre une perte de pression du fluide réfrigérant afin de refroidir le fluide caloporteur de la deuxième boucle de circulation B au niveau de l’échangeur de chaleur bifluide 7. Ce dispositif de détente 17 peut également être contourné ou laisser passer le fluide réfrigérant sans perte de pression afin de réchauffer le fluide caloporteur de la deuxième boucle de circulation B au niveau de l’échangeur de chaleur bifluide 7. The first reversible air conditioning loop A may in particular comprise, upstream of the two-fluid heat exchanger 7, an expansion device 17. This expansion device 17 may allow a loss of pressure of the refrigerant fluid in order to cool the heat transfer fluid of the second loop. circulation device B at the level of the two-fluid heat exchanger 7. This expansion device 17 can also be bypassed or allow the refrigerant to flow without loss of pressure in order to heat the heat transfer fluid of the second circulation loop B at the level of the bifluid heat exchanger 7.
La deuxième boucle de circulation B comprend plus particulièrement une boucle principale Bl et une boucle secondaire B2 connectées en parallèle l’une par rapport à l’autre. The second circulation loop B more particularly comprises a main loop B1 and a secondary loop B2 connected in parallel with respect to each other.
La boucle principale Bl comporte notamment une première pompe 3, un premier échangeur de chaleur 5 et l’échangeur de chaleur bifluide 7. Le premier échangeur de chaleur 5 peut plus particulièrement être un échangeur de chaleur permettant les échanges d’énergie calorifique avec les batteries. La boucle principale B 1 comporte en outre une première branche de dérivation B3 et un premier dispositif de redirection 31. The main loop B1 comprises in particular a first pump 3, a first heat exchanger 5 and the bifluid heat exchanger 7. The first heat exchanger 5 may more particularly be a heat exchanger allowing heat energy exchanges with the batteries. . The main loop B 1 further comprises a first branch B3 and a first redirection device 31.
La première branche de dérivation B 3 comporte un premier radiateur 13 destiné à être traversé par un flux d’air externe 100 et connecté en parallèle de l’échangeur de chaleur bifluide 7. Plus précisément, la première branche de dérivation B3 est connectée entre un premier point de jonction 21 disposé en amont de l’échangeur de chaleur bifluide 7 et un deuxième point de jonction 22 disposé en aval de l’échangeur de chaleur bifluide 7. The first branch B 3 includes a first radiator 13 to be traversed by an external air flow 100 and connected in parallel with the bifluid heat exchanger 7. More specifically, the first branch B3 branch is connected between a first junction point 21 disposed upstream of the bifluid heat exchanger 7 and a second junction point 22 disposed downstream of the bifluid heat exchanger 7.
Le premier dispositif de redirection 31 permet la redirection du fluide caloporteur en provenance du premier échangeur de chaleur 5 vers l’échangeur de chaleur bifluide 7 ou vers le premier radiateur 13. Ce premier dispositif de redirection 31 peut notamment être une vanne trois-voies disposée au niveau du premier point de jonction 21. The first redirection device 31 allows the heat transfer fluid to be redirected from the first heat exchanger 5 to the bifluid heat exchanger 7 or to the first radiator 13. This first redirection device 31 can notably be a three-way valve arranged at the first junction point 21.
La boucle secondaire B2 comporte quant à elle une deuxième pompe 9, un deuxième échangeur de chaleur 11 et un deuxième radiateur 15 destiné à être traversé par un flux d’air externe 100. Le deuxième échangeur de chaleur 11 peut plus particulièrement être un échangeur de chaleur permettant les échanges d’énergie calorifique avec le moteur électrique. The secondary loop B2 comprises meanwhile a second pump 9, a second heat exchanger 11 and a second radiator 15 to be traversed by an external air flow 100. The second heat exchanger 11 may more particularly be a heat exchanger. heat allowing the exchange of heat energy with the electric motor.
Le premier 13 et le deuxième 15 échangeur de chaleur peuvent être par exemple disposés côte à côte en face avant du véhicule automobile. The first 13 and the second 15 heat exchanger may for example be arranged side by side on the front of the motor vehicle.
La boucle principale Bl et la boucle secondaire B2 sont connectées l’une à l’autre par une deuxième branche de dérivation B4 et une troisième branche de dérivation B5. The main loop B1 and the secondary loop B2 are connected to each other by a second branch branch B4 and a third branch branch B5.
La deuxième branche de dérivation B4 relie plus particulièrement un troisième point de jonction 23 à un quatrième point de jonction 24. Le troisième point de jonction 23 est disposé sur la boucle secondaire B2 en amont du deuxième radiateur 15, entre ledit deuxième radiateur 15 et le deuxième échangeur de chaleur 11. Le quatrième point de jonction 24 est quant à lui disposé sur la branche principale Bl en aval du premier échangeur de chaleur 5, entre ledit premier échangeur de chaleur 5 et le premier point de jonction 21. The second branch B4 more particularly connects a third junction point 23 to a fourth junction point 24. The third junction point 23 is disposed on the secondary loop B2 upstream of the second radiator 15, between said second radiator 15 and the second second heat exchanger 11. The fourth junction point 24 is in turn disposed on the main branch B1 downstream of the first heat exchanger 5, between said first heat exchanger 5 and the first junction point 21.
La troisième branche de dérivation B5 relie plus particulièrement un cinquième point de jonction 25 à un sixième point de jonction 26. Le cinquième point de jonction 25 est disposé sur la boucle secondaire B2 en aval du deuxième radiateur 15, entre ledit deuxième radiateur 15 et le deuxième échangeur de chaleur 11. Le sixième point de jonction 26 est quant à lui disposé sur la première branche de dérivation B3 en aval du premier radiateur 13, entre ledit premier radiateur 13 et le deuxième point de jonction 21. The third branch B5 more particularly connects a fifth junction point 25 to a sixth junction point 26. The fifth junction point 25 is disposed on the secondary loop B2 downstream of the second radiator 15, between said second radiator 15 and the second second heat exchanger 11. The sixth junction point 26 is disposed on the first branch branch B3 downstream of the first radiator 13, between said first radiator 13 and the second junction point 21.
La deuxième boucle de circulation B comprend également un deuxième dispositif de redirection 32 du fluide caloporteur. Ce deuxième dispositif de redirection 32 permet la redirection du fluide caloporteur en provenance du deuxième échangeur de chaleur 11 vers le deuxième radiateur 15 ou vers l’échangeur de chaleur bifluide 7 via la deuxième branche de dérivation B4. Ce deuxième dispositif de redirection 32 peut notamment être une vanne trois-voies disposée au niveau du troisième point de jonction 23. The second circulation loop B also includes a second device 32 for redirecting the heat transfer fluid. This second redirection device 32 allows the heat transfer fluid to be redirected from the second heat exchanger 11 to the second radiator 15 or to the two-fluid heat exchanger 7 via the second branch B4. This second redirection device 32 may in particular be a three-way valve disposed at the third junction point 23.
Sur l’exemple de la figure 1, la première pompe 3 est disposée en amont du premier échangeur de chaleur 5, entre ledit premier échangeur de chaleur 5 et le deuxième point de jonction 22. Il est cependant tout à fait possible d’imaginer un autre positionnement de cette première pompe 3 par exemple en aval du premier échangeur de chaleur 5, entre ledit premier échangeur de chaleur 5 et le quatrième point de jonction 24. In the example of FIG. 1, the first pump 3 is disposed upstream of the first heat exchanger 5, between said first heat exchanger 5 and the second junction point 22. It is however quite possible to imagine a other positioning of this first pump 3, for example downstream of the first heat exchanger 5, between said first heat exchanger 5 and the fourth junction point 24.
De même, sur l’exemple de la figure 1, la deuxième pompe 9 est disposée en amont du deuxième échangeur de chaleur 11, entre ledit deuxième échangeur de chaleur 11 et le cinquième point de jonction 25. Il est cependant tout à fait possible d’imaginer un autre positionnement de cette deuxième pompe 9 par exemple en aval du deuxième échangeur de chaleur 11, entre ledit deuxième échangeur de chaleur 11 et le troisième point de jonction 23. Le circuit de gestion thermique 1 peut notamment fonctionner selon différents modes de fonctionnements illustrés aux figures 2a à 2c. Sur ces figures, seuls les éléments dans lesquels le fluide caloporteur circule sont représentés. De plus des flèches indiquent le sens de circulation du fluide caloporteur. a) Premier mode de refroidissement : Similarly, in the example of Figure 1, the second pump 9 is disposed upstream of the second heat exchanger 11, between said second heat exchanger 11 and the fifth junction point 25. However, it is quite possible to imagine another positioning of this second pump 9, for example downstream of the second heat exchanger 11, between said second heat exchanger 11 and the third junction point 23. The thermal management circuit 1 can in particular operate according to different modes of operation illustrated in FIGS. 2a to 2c. In these figures, only the elements in which the heat transfer fluid circulates are represented. In addition arrows indicate the direction of circulation of the coolant. a) First mode of cooling:
Le circuit de gestion thermique 1 peut notamment être configuré pour fonctionner selon un premier mode de refroidissement illustré à la figure 2a. The thermal management circuit 1 can in particular be configured to operate according to a first cooling mode illustrated in FIG. 2a.
Dans ce premier mode de refroidissement, le premier dispositif de redirection 31 est configuré pour d’une part rediriger le fluide caloporteur en provenance du premier échangeur de chaleur 5 vers l’échangeur de chaleur bifluide 7 et d’autre part empêcher la circulation du fluide caloporteur dans la première branche de dérivation B3. In this first cooling mode, the first redirection device 31 is configured to firstly redirect the heat transfer fluid from the first heat exchanger 5 to the bifluid heat exchanger 7 and secondly to prevent the circulation of the fluid. coolant in the first bypass branch B3.
Le deuxième dispositif de redirection 32 est quant à lui configuré pour d’une part rediriger le fluide caloporteur en provenance du deuxième échangeur de chaleur 11 vers le deuxième radiateur 15 et d’autre part empêcher la circulation du fluide caloporteur dans la deuxième branche de dérivation B4. The second redirection device 32 is in turn configured to firstly redirect the heat transfer fluid from the second heat exchanger 11 to the second radiator 15 and secondly to prevent the circulation of the coolant in the second branch branch B4.
Au sein de la boucle principale Bl, le fluide caloporteur mis en mouvement par la première pompe 3 circule dans le premier échangeur de chaleur 5 et dans l’échangeur de chaleur bifluide 7. Au niveau du premier échangeur de chaleur 5, le fluide caloporteur récupère de l’énergie calorifique en refroidissant par exemple les batteries. Au niveau de l’échangeur de chaleur bifluide 7, le fluide caloporteur cède cette énergie calorifique au fluide réfrigérant de la première boucle de climatisation inversible A. Within the main loop B1, the coolant put in motion by the first pump 3 circulates in the first heat exchanger 5 and in the bifluid heat exchanger 7. At the first heat exchanger 5, the coolant recovers heat energy by cooling the batteries for example. At the level of the two-fluid heat exchanger 7, the coolant transfers this heat energy to the coolant of the first reversible air conditioning loop A.
Au sein de la boucle secondaire B2, le fluide caloporteur mis en mouvement pas la deuxième pompe 9 circule dans le deuxième échangeur de chaleur 11 et dans le premier radiateur 15 Au niveau du deuxième échangeur de chaleur 11 le fluide caloporteur récupère de l’énergie calorifique en refroidissant par exemple le moteur électrique. Au niveau du deuxième radiateur 15, le fluide caloporteur cède cette énergie calorifique au flux d’air externe 100. Ce premier mode de refroidissement permet par exemple de refroidir indépendamment les batteries au niveau du premier échangeur de chaleur 5 et le moteur électrique au niveau du deuxième échangeur de chaleur 11. La boucle principale B 1 et la boucle secondaire B2 restent indépendantes l’une de l’autre. L’énergie calorifique des batteries est transférée vers la première boucle de climatisation A et celle du moteur électrique vers le deuxième radiateur 13. La première boucle de climatisation A peut quant à elle fonctionner aussi bien en mode pompe à chaleur ou en mode de climatisation. b) Deuxième mode de refroidissement : Within the secondary loop B2, the heat transfer fluid set in motion by the second pump 9 circulates in the second heat exchanger 11 and in the first radiator 15 At the second heat exchanger 11, the heat transfer fluid recovers heat energy cooling for example the electric motor. At the level of the second radiator 15, the heat transfer fluid transfers this heat energy to the external air flow 100. This first cooling mode allows for example to independently cool the batteries at the first heat exchanger 5 and the electric motor at the second heat exchanger 11. The main loop B 1 and the secondary loop B2 remain independent one of the other. The heat energy of the batteries is transferred to the first air-conditioning loop A and that of the electric motor to the second radiator 13. The first air-conditioning loop A may in turn operate in heat pump mode or in air-conditioning mode. b) Second cooling mode:
Le circuit de gestion thermique 1 peut également être configuré pour fonctionner selon un deuxième mode de refroidissement illustré à la figure 2b. The thermal management circuit 1 can also be configured to operate according to a second cooling mode illustrated in FIG. 2b.
Dans ce deuxième mode de refroidissement, le premier dispositif de redirection 31 est configuré d’une part pour rediriger le fluide caloporteur en provenance du premier échangeur de chaleur 5 vers le premier radiateur 13 et d’autre part empêcher la circulation du fluide caloporteur dans l’échangeur de chaleur bifluide. In this second cooling mode, the first redirection device 31 is configured on the one hand to redirect the heat transfer fluid from the first heat exchanger 5 to the first radiator 13 and on the other hand to prevent the circulation of the coolant in the heat transfer medium. bifluid heat exchanger.
Le deuxième dispositif de redirection 32 est quant à lui configuré pour d’une part rediriger le fluide caloporteur en provenance du deuxième échangeur de chaleur 11 vers le deuxième radiateur 15 et d’autre part empêcher la circulation du fluide caloporteur dans la deuxième branche de dérivation B4. The second redirection device 32 is in turn configured to firstly redirect the heat transfer fluid from the second heat exchanger 11 to the second radiator 15 and secondly to prevent the circulation of the coolant in the second branch branch B4.
Au sein de la boucle principale Bl, le fluide caloporteur mis en mouvement par la première pompe 3 circule dans le premier échangeur de chaleur 5 et est redirigé vers le premier radiateur 13. Au niveau du premier échangeur de chaleur 5, le fluide caloporteur récupère de l’énergie calorifique en refroidissant par exemple les batteries. Cette énergie calorifique est ensuite relâchée dans le flux d’air externe 100 au niveau du premier radiateur 13. Within the main loop B1, the heat transfer fluid set in motion by the first pump 3 circulates in the first heat exchanger 5 and is redirected towards the first radiator 13. At the level of the first heat exchanger 5, the heat transfer fluid recovers from heat energy by cooling the batteries for example. This heat energy is then released into the external air flow 100 at the level of the first radiator 13.
Au sein de la boucle secondaire B2, le fluide caloporteur mis en mouvement pas la deuxième pompe 9 circule dans le deuxième échangeur de chaleur 11 et dans le deuxième radiateur 15. Au niveau du deuxième échangeur de chaleur 11 le fluide caloporteur récupère de l’énergie calorifique en refroidissant par exemple le moteur électrique. Cette énergie calorifique est ensuite relâchée dans le flux d’air externe 100 au niveau du deuxième radiateur 15. Within the secondary loop B2, the heat transfer fluid set in motion by the second pump 9 circulates in the second heat exchanger 11 and in the second radiator 15. At the second heat exchanger 11 the fluid coolant recovers heat energy by cooling for example the electric motor. This heat energy is then released into the external air flow 100 at the second radiator 15.
Ce deuxième mode de refroidissement permet également de refroidir indépendamment les batteries au niveau du premier échangeur de chaleur 5 et le moteur électrique au niveau du deuxième échangeur de chaleur 11. L’énergie calorifique des batteries et du moteur électrique est transférée respectivement vers le premier 13 et le deuxième 15 radiateur. La boucle principale B l et la boucle secondaire B2 restent indépendantes l’une de l’autre. La première boucle de climatisation A peut quant à elle être éteinte ou alors fonctionner aussi bien en mode pompe à chaleur ou en mode de climatisation indépendamment de la deuxième boucle de circulation B. c) Mode de récupération de chaleur : This second cooling mode also allows the batteries to be independently cooled at the level of the first heat exchanger 5 and the electric motor at the level of the second heat exchanger 11. The heat energy of the batteries and the electric motor is transferred respectively to the first heat exchanger 13. and the second radiator. The main loop B 1 and the secondary loop B2 remain independent of each other. The first air-conditioning loop A can itself be switched off or can also be operated in heat pump mode or in air-conditioning mode independently of the second circulation loop B. c) Heat recovery mode:
Le circuit de gestion thermique 1 peut également être configuré pour fonctionner selon un mode de récupération de chaleur illustré à la figure 2c. The thermal management circuit 1 can also be configured to operate according to a heat recovery mode illustrated in FIG. 2c.
Dans ce mode de récupération de chaleur, le deuxième dispositif de redirection 32 est configuré pour d’une part rediriger le fluide caloporteur en provenance du deuxième échangeur de chaleur 11 vers l’échangeur de chaleur bifluide 7 via la deuxième branche de dérivation B4 et d’autre part empêcher la circulation du fluide caloporteur vers le deuxième radiateur 15. In this heat recovery mode, the second redirection device 32 is configured to firstly redirect the heat transfer fluid from the second heat exchanger 11 to the bifluid heat exchanger 7 via the second branch B4 and d on the other hand to prevent the circulation of the coolant towards the second radiator 15.
Le premier dispositif de redirection 31 est quant à lui configuré pour d’une part rediriger le fluide caloporteur en provenance du quatrième point de jonction 24, c’est-à- dire à la fois en provenance du premier échangeur de chaleur 5 et de la deuxième branche de dérivation B4, vers l’échangeur de chaleur bifluide 7 et d’autre part empêcher la circulation du fluide caloporteur vers le premier radiateur 13. The first redirection device 31 is in turn configured to firstly redirect the heat transfer fluid from the fourth junction point 24, that is to say both from the first heat exchanger 5 and the second bypass branch B4, to the two-fluid heat exchanger 7 and on the other hand prevent the circulation of the heat transfer fluid to the first radiator 13.
Au sein de la boucle secondaire B2, le fluide caloporteur mis en mouvement pas la deuxième pompe 9 circule dans le deuxième échangeur de chaleur 11 et est redirigé vers l’échangeur de chaleur bifluide 7 via la deuxième branche de dérivation B4. Au niveau du deuxième échangeur de chaleur 11 le fluide caloporteur récupère de l’énergie calorifique en refroidissant par exemple le moteur électrique. Within the secondary loop B2, the heat transfer fluid set in motion by the second pump 9 circulates in the second heat exchanger 11 and is redirected to the two-fluid heat exchanger 7 via the second branch B4. At level of the second heat exchanger 11 the coolant recovers heat energy by cooling for example the electric motor.
Au sein de la boucle principale Bl, le fluide caloporteur mis en mouvement par la première pompe 3 circule dans le premier échangeur de chaleur 5. Au niveau du quatrième point de jonction 24 le fluide caloporteur issu du premier échangeur de chaleur 5 se mélange avec celui en provenance du deuxième échangeur de chaleur 11 avant d’arriver à l’échangeur de chaleur bifluide 7. Au niveau du premier échangeur de chaleur 5, le fluide caloporteur récupère de l’énergie calorifique en refroidissant par exemple les batteries. Within the main loop B1, the heat transfer fluid set in motion by the first pump 3 circulates in the first heat exchanger 5. At the fourth connection point 24, the heat transfer fluid from the first heat exchanger 5 mixes with that from the second heat exchanger 11 before arriving at the bifluid heat exchanger 7. At the first heat exchanger 5, the coolant recovers heat energy by cooling, for example, the batteries.
Au niveau de l’échangeur de chaleur bifluide 7, le fluide caloporteur issu à la fois du premier 5 et du deuxième 11 échangeur de chaleur cède de l’énergie calorifique à la première boucle de climatisation A. At the level of the bifluid heat exchanger 7, the heat transfer fluid from both the first 5 and the second 11 heat exchanger transfers heat energy to the first air conditioning loop A.
En sortie de l’échangeur de chaleur bifluide 7, une partie du fluide caloporteur retourne dans la boucle secondaire B2 via la troisième branche de dérivation B5. At the outlet of the two-fluid heat exchanger 7, part of the coolant returns to the secondary loop B2 via the third branch B5.
Ce mode de récupération de chaleur permet par exemple de refroidir conjointement les batteries au niveau du premier échangeur de chaleur 5 et le moteur électrique au niveau du deuxième échangeur de chaleur 11. L’énergie calorifique des batteries et du moteur électrique est transférée en totalité vers l’échangeur de chaleur bifluide 7 afin d’être transmise à la première boucle de climatisation A. La première boucle de climatisation A fonctionne quant à elle en mode pompe à chaleur afin d’utiliser l’énergie calorifique récupérée de la deuxième boucle de circulation B pour réchauffer l’habitacle. This heat recovery mode makes it possible, for example, to co-cool the batteries at the level of the first heat exchanger 5 and the electric motor at the level of the second heat exchanger 11. The heat energy of the batteries and the electric motor is transferred in full to the bifluid heat exchanger 7 to be transmitted to the first air conditioning loop A. The first air conditioning loop A operates in heat pump mode to use the heat energy recovered from the second circulation loop B to warm the cabin.
Comme le montre la figure 1, la boucle principale Bl peut également comporter un dispositif de chauffage électrique 19 du fluide caloporteur. Ce dispositif de chauffage électrique 19, par exemple une résistance à coefficient de température positif, est disposé en amont du premier échangeur de chaleur 5, entre le premier échangeur de chaleur 5 et l’échangeur de chaleur 7. Dans l’exemple illustré à la figure 1, le dispositif de chauffage électrique 19 est disposé entre le deuxième point de jonction 22 et le premier échangeur de chaleur 5. Ce dispositif de chauffage électrique 19 peut par exemple être utilisé afin de réchauffer le fluide caloporteur en amont du premier échangeur de chaleur 5 afin par exemple de permettre aux batteries d’atteindre leur température de fonctionnement optimale, notamment dans le cas d’une utilisation par temps froid. As shown in Figure 1, the main loop B1 may also include an electric heater 19 of the heat transfer fluid. This electric heating device 19, for example a positive temperature coefficient resistor, is arranged upstream of the first heat exchanger 5, between the first heat exchanger 5 and the heat exchanger 7. In the example illustrated in FIG. Figure 1, the device electric heating device 19 is arranged between the second junction point 22 and the first heat exchanger 5. This electric heating device 19 may for example be used to heat the heat transfer fluid upstream of the first heat exchanger 5 in order, for example, to to allow the batteries to reach their optimum operating temperature, especially in the case of use in cold weather.
Ainsi, on voit bien que de part son architecture particulière, le circuit de gestion thermique 1 permet un fonctionnement selon différents modes de fonctionnement, un découplage de la gestion thermique entre la boucle principale Bl et la boucle secondaire B2 de la deuxième boucle de circulation B. De plus ces différents modes de fonctionnement peuvent être mis en œuvre au moyen d’un nombre limité de vannes, que ce soit des vannes d’arrêt ou des vannes trois-voies, ce qui permet de limiter les coûts de production. Thus, it is clear that due to its particular architecture, the thermal management circuit 1 allows operation according to different operating modes, a decoupling of the thermal management between the main loop B1 and the secondary loop B2 of the second circulation loop B Moreover, these different modes of operation can be implemented by means of a limited number of valves, either shut-off valves or three-way valves, which makes it possible to limit the production costs.
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1854049 | 2018-05-15 | ||
| FR1854049A FR3081124B1 (en) | 2018-05-15 | 2018-05-15 | THERMAL MANAGEMENT CIRCUIT OF A HYBRID OR ELECTRIC VEHICLE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019220036A1 true WO2019220036A1 (en) | 2019-11-21 |
Family
ID=62684967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2019/051047 Ceased WO2019220036A1 (en) | 2018-05-15 | 2019-05-07 | Circuit for the thermal management of a hybrid or electric vehicle |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3081124B1 (en) |
| WO (1) | WO2019220036A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3680143A1 (en) * | 2019-01-09 | 2020-07-15 | ALSTOM Transport Technologies | Heat exchange system, heat exchange assembly including such a system, associated railway vehicle and method |
| FR3128408A1 (en) * | 2021-10-26 | 2023-04-28 | Valeo Systemes Thermiques | THERMAL MANAGEMENT SYSTEM FOR HYBRID OR ELECTRIC VEHICLES |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3112718A1 (en) * | 2020-07-27 | 2022-01-28 | Valeo Systèmes Thermique | Thermal management device for an electric or hybrid motor vehicle. |
| FR3114996A1 (en) * | 2020-10-08 | 2022-04-15 | Valeo Systemes Thermiques | Vehicle heat treatment system |
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| US20120225341A1 (en) * | 2011-03-03 | 2012-09-06 | Gregory Major | Thermal management of cabin and battery pack in hev/phev/bev vehicles |
| CN102941791A (en) * | 2012-11-08 | 2013-02-27 | 上海汽车集团股份有限公司 | Integrated thermal cycling system of electric vehicle |
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| EP3260319A1 (en) * | 2016-06-20 | 2017-12-27 | Hyundai Motor Company | Heat pump system for vehicle |
| WO2018069629A1 (en) * | 2016-10-13 | 2018-04-19 | Hutchinson | Thermal conditioning facility for the interior and/or at least one part of a motor vehicle |
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| US20120225341A1 (en) * | 2011-03-03 | 2012-09-06 | Gregory Major | Thermal management of cabin and battery pack in hev/phev/bev vehicles |
| CN102941791A (en) * | 2012-11-08 | 2013-02-27 | 上海汽车集团股份有限公司 | Integrated thermal cycling system of electric vehicle |
| US20170106725A1 (en) * | 2015-10-19 | 2017-04-20 | Hyundai Motor Company | Battery cooling system for a vehicle |
| EP3260319A1 (en) * | 2016-06-20 | 2017-12-27 | Hyundai Motor Company | Heat pump system for vehicle |
| WO2018069629A1 (en) * | 2016-10-13 | 2018-04-19 | Hutchinson | Thermal conditioning facility for the interior and/or at least one part of a motor vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3680143A1 (en) * | 2019-01-09 | 2020-07-15 | ALSTOM Transport Technologies | Heat exchange system, heat exchange assembly including such a system, associated railway vehicle and method |
| FR3128408A1 (en) * | 2021-10-26 | 2023-04-28 | Valeo Systemes Thermiques | THERMAL MANAGEMENT SYSTEM FOR HYBRID OR ELECTRIC VEHICLES |
| WO2023072586A1 (en) * | 2021-10-26 | 2023-05-04 | Valeo Systemes Thermiques | Thermal management system for a hybrid or electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3081124A1 (en) | 2019-11-22 |
| FR3081124B1 (en) | 2020-05-08 |
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