EP4601894A1 - Dispositif de gestion thermique d'un vehicule automobile electrique ou hybride comprenant un circuit de fluide refrigerant - Google Patents
Dispositif de gestion thermique d'un vehicule automobile electrique ou hybride comprenant un circuit de fluide refrigerantInfo
- Publication number
- EP4601894A1 EP4601894A1 EP23786284.2A EP23786284A EP4601894A1 EP 4601894 A1 EP4601894 A1 EP 4601894A1 EP 23786284 A EP23786284 A EP 23786284A EP 4601894 A1 EP4601894 A1 EP 4601894A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- refrigerant fluid
- heat exchanger
- main loop
- condenser
- thermal management
- 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.)
- Pending
Links
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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3229—Cooling devices using compression characterised by constructional features, e.g. housings, mountings, conversion systems
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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 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 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 devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
-
- 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 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
Definitions
- the invention relates to the field of electric or hybrid motor vehicles and more particularly to a thermal management device within such a vehicle.
- One of the aims of the present invention is therefore to at least partially remedy the drawbacks of the prior art and to propose an improved thermal management device.
- the invention therefore relates to a thermal management device for an electric or hybrid motor vehicle, said thermal management device comprising a refrigerant fluid circuit inside which a refrigerant fluid is intended to circulate, the refrigerant fluid circuit comprising in the direction of circulation of the refrigerant fluid: a compressor, a condenser intended to absorb heat energy from the refrigerant fluid , a pre-expansion device arranged directly upstream of a reservoir bottle, a main expansion device, and an evaporator intended to transmit heat energy to the refrigerating fluid.
- the thermal management device advantageously makes it possible to obtain a greater reduction in temperature upstream of the reservoir bottle and therefore a greater enthalpy energy delta allowing greater absorption of heat energy at the evaporator.
- the condenser comprises an additional heat exchanger intended to be crossed by both the refrigerant fluid and an additional fluid, the pre-expansion device comprising a first pre-expansion device -expansion and where the thermal management device comprising in the direction of circulation of the refrigerant fluid a main loop comprising in the direction of the refrigerant fluid the compressor, the additional heat exchanger, the first pre-expansion device arranged directly upstream of the reservoir bottle, the main expansion device and the evaporator.
- the main loop is a first main loop
- the condenser further comprises a first condenser intended to allow the heating of an additional fluid and arranged on the first main loop in the direction of circulation of the refrigerant fluid between the compressor and the additional heat exchanger.
- the pre-expansion device comprises a second pre-expansion device
- the thermal management device comprises a first branch line connecting a first connection point, arranged on the first main loop downstream of the first condenser , at a second connection point, arranged on the first main loop between the first pre-expansion device and the reservoir bottle
- the second pre-expansion device is arranged between the first condenser and the reservoir bottle.
- the thermal management device further comprises: a fourth branch line connecting a seventh connection point, arranged on the first main loop downstream of the reservoir bottle, to an eighth point connection, arranged on the first main loop between the first pre-expansion device and the reservoir bottle, and a fifth branch line connecting a ninth connection point, arranged on the first main loop downstream of the additional heat exchanger , at a tenth connection point, located on the first main loop downstream of the evaporator.
- the thermal management device further comprises a sixth branch line connecting an eleventh connection point, arranged on the first main loop downstream of the compressor, to a twelfth connection point, arranged on the first main loop upstream of the additional heat exchanger.
- the thermal management device further comprises a third branch line connecting a fifth connection point, located on the first main loop downstream of the first condenser, to a sixth connection point, located on the first main loop. between the additional heat exchanger and the first pre-expansion device.
- the main loop is a second main loop
- the condenser further comprises a first condenser intended to transmit heat energy to an internal air flow
- the management device thermal comprises in the direction of circulation of the refrigerant fluid a first branch connecting a first junction point, arranged on the second main loop downstream of the compressor, to a second junction point, arranged on the second main loop upstream of the first pre-expansion device, said first branch branch comprising the first condenser.
- the thermal management device of the invention further comprises a second branch branch connecting a third junction point, arranged on the second main loop downstream of the first condenser, to a fourth junction point, arranged on the second main loop upstream of the additional heat exchanger, said second bypass pipe comprising a secondary expansion device.
- Figure 1 is a schematic representation of a thermal management device according to a first general embodiment.
- Figure 2 is a schematic representation of the thermal management device of Figure 1 according to a general mode of operation.
- Figure 3 is a schematic representation of a thermal management device according to a second embodiment.
- Figure 4 is a schematic representation of the thermal management device of Figure 3 according to a first mode and a second mode of operation.
- Figure 5 is a schematic representation of the thermal management device of Figure 3 according to a third mode of operation.
- Figure 6 is a schematic representation of the thermal management device of Figure 3 according to a fourth mode of operation.
- Figure 7 is a schematic representation of the thermal management device of Figure 3 according to a fifth operating mode.
- Figure 8 is a schematic representation of the thermal management device of Figure 3 according to a sixth operating mode.
- Figure 9 is a schematic representation of a thermal management device according to a third embodiment.
- Figure 10 is a schematic representation of a thermal management device according to a fourth embodiment.
- Figure 11 is a schematic representation of the thermal management device of Figure 10 according to a seventh operating mode.
- Figure 12 is a schematic representation of the thermal management device of Figure 10 according to an eighth operating mode.
- Figure 13 is a schematic representation of a thermal management device according to a fifth embodiment.
- Figure 14A and Figure 14B represent two schematic representations of a thermal management device according to two variants of a sixth embodiment.
- Figure 15 is a schematic representation of the thermal management device of Figures 14A, 14B according to a ninth operating mode.
- Figure 16 is a schematic representation of the thermal management device of Figures 14A, 14B according to a tenth operating mode.
- Figure 17 is a schematic representation of the thermal management device of Figures 14A, 14B according to an eleventh operating mode.
- Figure 18 is a schematic representation of a thermal management device according to a seventh embodiment.
- certain elements or parameters can be indexed, such as for example first element or second element as well as first parameter and second parameter or even first criterion and second criterion, etc.
- it is a simple indexing to differentiate and name elements or parameters or criteria that are close, but not identical.
- This indexing does not imply a priority of one element, parameter or criterion in relation to another and such denominations can easily be interchanged without departing from the scope of this description.
- This indexing does not imply an order in time either, for example to assess this or that criterion.
- placed upstream means that one element is placed before another with respect to the direction of circulation of a fluid.
- placed downstream we mean that one element is placed after another in relation to the direction of circulation of the fluid.
- FIG. 1 shows a thermal management device 1 of an electric or hybrid automobile vehicle according to a first embodiment.
- This thermal management device 1 comprises a refrigerant fluid circuit A inside which a refrigerant fluid is intended to circulate.
- This refrigerant fluid circuit comprises a first main loop A1 comprising, in the direction of circulation of the refrigerant fluid, a compressor 1, a condenser 2, 3 intended to absorb the heat energy of the refrigerant fluid, a pre-heating device -expansion 4, 5 arranged directly upstream of a reservoir bottle 6, a main expansion device 7, 8 and an evaporator 9, 10 intended to transmit heat energy to the refrigerant fluid.
- condenser and evaporator we mean that the heat exchangers are defined by their function and their positioning in the first main loop A1 depending on the direction of circulation of the refrigerant fluid.
- a condenser will be positioned, in the direction of circulation of the refrigerant fluid, in a so-called high pressure portion of the refrigerant fluid circuit A, in order to absorb heat energy from the refrigerant fluid and transmit it to an annex fluid, for example a flow of air passing through it or another heat transfer fluid.
- the refrigerant fluid is generally in the gas phase at high pressure at the condenser inlet and in the liquid phase or liquid-gas mixture always at high pressure at the condenser outlet.
- An evaporator will be positioned, in the direction of circulation of the refrigerant fluid, in a so-called low pressure portion of the refrigerant fluid circuit A, in order to absorb heat energy in an ancillary fluid, for example a flow of air the passing through or from another heat transfer fluid, and transmitting it to the refrigerant fluid.
- the refrigerant fluid is generally in the liquid phase or liquid-gas mixture at low pressure, gas phase at the evaporator inlet and in the gas phase, always at low pressure, at the evaporator outlet.
- the reservoir bottle 6 is installed between the condenser 2, 3 and the main expansion device 7, 8 to temporarily store the refrigerant fluid conveyed from the condenser 2, 3 to the evaporator 9, 10, so that a sufficient quantity of refrigerant is supplied to the evaporator 9, 10.
- the reservoir bottle 6 can in particular make it possible to eliminate humidity and foreign substances contained in the refrigerant, and to supply the refrigerant in a completely liquid state to the regulator. The presence of such a reservoir bottle therefore makes it possible to improve the heat absorption efficiency at the level of the evaporator 9, 10.
- the presence of a pre-expansion device 4, 5 directly upstream of the reservoir bottle 6 makes it possible to increase the subcooling before it enters the evaporator 9, 10 and therefore to obtain a delta of greater enthalpy energy between the inlet of the condenser 2, 3 and the outlet of the reservoir bottle 6.
- the refrigerant fluid can recover more calories during its passage through the evaporator 9, 10.
- the evaporator 10 can in particular be arranged at the level of the vehicle's batteries.
- Figure 2 shows a general mode of operation of the thermal management device 1 of the invention shown in Figure 1.
- the refrigerant fluid is first compressed at the compressor 1, it is then in a gaseous state known as high pressure and high temperature. Then the refrigerant fluid passes into the condenser 2, 3 at which it is condensed and suffers a loss of heat energy, and therefore of temperature, in favor of a first auxiliary flow (described in detail later). At the outlet of the condenser 2, 3, the refrigerant fluid is in a state of gas/liquid mixture at high pressure. The refrigerant fluid then passes through the pre-expansion device 4, 5 where it will undergo a first loss of pressure which causes the refrigerant fluid to pass at a so-called intermediate pressure.
- This first loss of pressure makes it possible to cause a phase change into the gas phase of a portion of the liquid part of the refrigerant fluid within the reservoir bottle 6.
- This phase change implies a withdrawal of a part of the energy calorific of the refrigerant fluid and therefore a drop in the enthalpy of the liquid phase.
- the pressure loss is here less significant than at the level of the main expansion device 7, 8.
- the refrigerant fluid then passes into the reservoir bottle 6 where it will be purified and where a phase separation is carried out so that the refrigerant fluid in outlet of the reservoir bottle 6 is in the liquid phase. At the outlet of the reservoir bottle 6, the subcooling of the refrigerant fluid is thus increased compared to that at the outlet of the condenser 2, 3.
- the refrigerant then passes through a main expansion device 7, 8 at which it undergoes a second loss pressure and causes the refrigerant fluid to pass from so-called intermediate pressure to so-called low pressure.
- the refrigerant fluid then passes into the evaporator 9, 10 at which it absorbs heat energy from a second auxiliary flow (described in detail later), which increases its enthalpy and causes it to pass into a gaseous state.
- the refrigerant finally returns to compressor 1.
- the first condenser 2 is intended to be crossed by an additional fluid and to transmit heat energy from the refrigerant fluid to this additional fluid.
- the additional fluid intended to pass through the first condenser 2 is an internal air flow 100.
- the first condenser 2 can then be for example a condenser called internal, arranged within a heating, ventilation and air conditioning device (also called by the English acronym HVAC).
- the internal air flow 100 is sent into the passenger compartment of the vehicle.
- the additional fluid with which the first condenser 2 can exchange heat energy can also be a heat transfer fluid circulating within an additional thermal management circuit (not shown).
- the first condenser can thus be, for example, a double fluid heat exchanger. It is therefore entirely possible to imagine that, in the embodiments and modes of operation described below, the internal air flow 100 is replaced by a heat transfer fluid circulating within an additional thermal management circuit.
- the first condenser 2 can be passing, that is to say it is not crossed by this ancillary fluid so that the refrigerant fluid passing through it does not or little heat exchange with this auxiliary fluid.
- this ancillary fluid is an internal air flow 100
- the arrival of the latter to the first condenser 2 can be cut off, for example by a shutter or the internal air flow 100 can bypass the first condenser 2.
- this additional fluid is a heat transfer fluid of an additional thermal management circuit
- the circulation of the fluid heat transfer within the first condenser 2 can be stopped, by stopping the additional thermal management circuit or by bypassing the first condenser 2.
- the additional heat exchanger 3 is intended to be crossed by both the refrigerant fluid and an additional fluid.
- the additional heat exchanger 3 can in particular be configured to transfer heat energy from the auxiliary fluid to the refrigerant fluid, thus heating the refrigerant fluid, it then plays the role of an evaporator.
- the additional heat exchanger 3 can also be configured to transfer heat energy from the refrigerant fluid to the auxiliary fluid, thus cooling the refrigerant fluid, it then plays the role of a second condenser.
- This additional fluid may in particular be of the same nature or distinct from the additional fluid passing through the first condenser 2.
- the ancillary fluid intended to pass through the additional heat exchanger 3 is a first heat transfer fluid circulating within a first heat transfer fluid circuit B1 .
- the additional heat exchanger 3 can thus be a dual fluid heat exchanger arranged jointly on the refrigerant fluid circuit A and on a first heat transfer fluid circuit B1 in which a first heat transfer fluid circulates.
- This first heat transfer fluid can be water or glycol water.
- the first heat fluid circuit B1 may in particular comprise one or more circuits parallel to or joining at the level of the additional heat exchanger 3 and arranged at the level of the front face of the vehicle and/or at the level of the vehicle batteries and/or at the level of an electric motor and/or at the level of the power electronics.
- the first heat transfer fluid circuit B1 may in particular also include at least one radiator placed on the front of the motor vehicle in order to evacuate heat energy with the external air.
- the additional fluid with which the additional heat exchanger can exchange heat energy can also be an air flow passing through the latter. This variant is not shown in Figures 3 to 18. It is therefore entirely possible to imagine that, in the embodiments and operation described below, the first heat transfer fluid circulating within the first heat transfer fluid circuit B1, is replaced by a flow of air.
- the thermal management device can comprise a first pre-expansion device 4 disposed between the additional heat exchanger 3 and the reservoir bottle 6 and a second expansion device 5 disposed between the first condenser 2 and the reservoir bottle 6, as described in detail below.
- the pre-expansion device 4, 5 can be an expansion device with a variable opening diameter allowing the passage of the refrigerant fluid without loss of pressure when it is open to its maximum diameter.
- the second pre-expansion device 5 does not impact the state of the fluid before its arrival at the heat exchanger additional 3.
- An alternative not shown may also be that this pre-release device 4, 5 can be bypassed.
- the refrigerant fluid circuit A can in particular be an air conditioning circuit where the evaporator 9, 10 comprises a first heat exchanger 9 intended to be crossed by the internal air flow 100.
- the first heat exchanger 9 can be arranged within the heating, ventilation and air conditioning device 110, for example upstream of the first condenser 2 in the direction of the internal air flow 100.
- the second fluid annex corresponds to the internal air flow 100.
- Upstream of the first heat exchanger 9 is arranged a first main expansion device 7.
- the refrigerant fluid circuit A can thus comprise a first main loop A1 comprising, in the direction of circulation of the refrigerant fluid, the compressor 1, the first condenser 2, the additional heat exchanger 3, the first pre-expansion device 4, the reservoir bottle 6, the first main expansion device 7, and the first heat exchanger 9.
- the first main loop A1 may include an exchanger internal heat 11 arranged jointly on a first portion 21 and a second portion 22 of the first main loop A1 in order to obtain an exchange of calories between these two portions.
- the first portion 21 is placed between the reservoir bottle 6 and the main expansion device 7, 8, and the second portion 22 is placed between the evaporator 9, 10 and the compressor 1. This exchange of calories makes it possible to improve the coefficient of performance of the refrigerant circuit A.
- the refrigerant fluid circuit A can also comprise a first branch line c1, shown in thin line, connecting a first connection point 31, arranged on the first main loop A1 in downstream of the first condenser 2, at a second connection point 32, arranged on the first main loop A1 between the first pre-expansion device 4 and the reservoir bottle 6.
- This first diversion pipe c1 allows the refrigerant fluid A1 to bypass the additional heat exchanger 3 and to connect together the first condenser 2 and the reservoir bottle 6.
- the second pre-expansion device 5 can be arranged at the level of the first main loop A1 upstream of the first connection point 31, as shown, or within the first branch pipe c1.
- invertible we mean that the refrigerant fluid circuit A1 is capable of being able to cool the internal air flow 100 or heat it according to needs.
- the internal air flow 100 is notably cooled via the first heat exchanger 9 in a cooling mode of the thermal management device of the invention.
- the refrigerant circuit A1 may comprise a first device for controlling the circulation of the refrigerant fluid from the first main loop A1 to the first branch line c1 at the first connection point 31.
- this first control device can in particular be a three-way valve 51 arranged at the first connection point 31.
- the first control device may comprise two stop valves each disposed downstream of the first connection point 31 on the first main loop A1 and on the first diversion pipe c1, respectively.
- the refrigerant circuit A1 may comprise a second device for controlling the circulation of the refrigerant fluid from the first branch line c1 to the first main loop A1 at the second connection point 32.
- the second control device can be a non-return valve 62 placed on the first main loop A1 downstream of the first pre-expansion device 4, and more precisely between the second connection point 32 and the first pre-expansion device. -expansion 4.
- This non-return valve 62 prevents the refrigerant fluid passing through the first diversion pipe c1 from being directed to the first pre-expansion device 4.
- the second control device can be a stop valve.
- the evaporator 9, 10 can comprise a second heat exchanger 10.
- This second heat exchanger 10 can in particular allow thermal management and more particularly the cooling of the batteries of the electric or hybrid motor vehicle.
- the second heat exchanger can also be arranged jointly on the refrigerant fluid circuit A and a second heat fluid circuit B2 within which a second heat transfer fluid is intended to circulate in order to to allow heat exchange between them.
- the second heat fluid circuit B2 may in particular comprise one or more parallel circuits or joining at the level of the additional heat exchanger 3 and arranged at the level of the front face of the vehicle and/or at the level of the electric motor and/or at the level of the electric motor. level of power electronics.
- the second heat exchanger 10 can be arranged on a second branch line c2 of the refrigerant fluid circuit A, shown in thin lines.
- the second branch line c2 connects a third connection point 33, arranged on the first main loop A1 between the reservoir bottle 6 and the first expansion device main 7, to a fourth connection point 34, arranged on the first main loop A1 downstream of the first heat exchanger 9.
- the second branch line c2 comprises, in the direction of circulation of the refrigerant fluid, a second main expansion device 8 arranged upstream of the second heat exchanger 10.
- connection point 33 is arranged between the internal heat exchanger 11 and the first main expansion device 7, and the fourth connection point 34 is arranged between the first non-return valve 61 and the first heat exchanger 9.
- the first main loop A1 may comprise a first non-return valve 61 disposed downstream of the first heat exchanger 9 and the second diversion pipe c2 may comprise a second non-return valve 63 disposed in downstream of the second heat exchanger 10.
- the first non-return valve 61 is arranged upstream of the fourth connection point 34 and makes it possible to prevent the refrigerant fluid leaving the second heat exchanger 10 from rising back into the first exchanger 9.
- the second non-return valve 63 can be arranged between the second heat exchanger 10 and the fourth connection point 34. This second non-return valve 63 makes it possible to prevent the refrigerant fluid leaving the first heat exchanger 9 does not join the second heat exchanger 10.
- the portions of the refrigerant fluid circuit A1 in which the refrigerant fluid does not circulate are represented in dotted lines.
- Figure 4 illustrates a mode of operation in which the refrigerant fluid circuit A is in a mode of cooling only the internal air flow 100 via the first heat exchanger 9.
- the first control device here the three-way valve 51, is configured to close access to the first diversion pipe c1 so that the refrigerant fluid circulates directly from the first condenser 2 to the dual fluid heat exchanger 3.
- the third control device is configured to close access to the second bypass line c2 so that all the refrigerant coming from the reservoir bottle 6 passes through the first heat exchanger 9.
- the refrigerant fluid leaves the high pressure compressor 1 and passes successively through the first condenser 2, optionally the second subcooling expansion device 5 if it is arranged on the first main loop A1, and the first connection point 31 where it is directed towards the additional heat exchanger 3 where it always arrives at high pressure and without having exchanged heat energy by passing through the first condenser 2.
- the first condenser 2 is passing, that is to say that it is not crossed by the internal air flow 100 so that the refrigerant fluid passing through it undergoes little or no heat exchange with the internal air flow 100.
- second pre-release device 5 has a maximum opening in the case where the latter is placed on the first main loop A1.
- the refrigerant passes through the first portion 21 of the internal heat exchanger 11 where it will undergo a third loss of heat. heat energy for the benefit of the refrigerant fluid passing through the second portion 22.
- the refrigerant fluid continues towards the third connection point 33 where it is directed towards the first main expansion device 7 at which it undergoes a second, more significant loss of pressure than the first, in order to achieve low pressure.
- the refrigerant fluid then passes into the first heat exchanger 9 where it absorbs heat energy from the internal air flow 100.
- the internal air flow 100 is thus cooled.
- the refrigerant fluid joins the fourth connection point 34.
- the refrigerant fluid then continues towards the second portion 22 of the internal heat exchanger 11 where it absorbs heat energy coming from the first portion 21.
- the refrigerant then returns to the compressor 1.
- Figure 4 also illustrates a second operating mode in which the refrigerant fluid circuit A is in a series defogging mode of the internal air flow 100.
- the first control device is configured to close access to the first diversion pipe c1
- the third control device is configured to close access to the second diversion pipe c2.
- the latter In order to obtain defogging of the internal air flow 100, the latter is initially cooled in order to condense the humidity present within it, then it is reheated before reaching the passenger compartment and in particular the windshield.
- the internal condenser 2 and the first heat exchanger 9 are both crossed by an internal air flow 100.
- the refrigerant fluid leaving the compressor 1 and passing through the first condenser 2 undergoes a first heat loss in favor of the internal air flow 100.
- the internal air flow 100 is thus heated before reaching the passenger compartment.
- the refrigerant fluid continues towards the additional heat exchanger 3.
- the second pre-expansion device 5 is arranged on the first main loop A1, the latter causes the refrigerant fluid to undergo a first loss of pressure.
- the refrigerant fluid absorbs heat energy from the first heat transfer fluid of the first heat fluid circuit B1 due to the fact that it has already given up heat energy via the first condenser 2 and that it has suffered a first loss of pressure while passing through the second pre-expansion device 5.
- the refrigerant fluid then passes through the first pre-expansion device 4 where it possibly undergoes a second loss of pressure before joining the reservoir bottle 6.
- the following this mode of operation is identical to that of the first mode of operation.
- this second mode of operation uses the additional heat exchanger 3 as an evaporator.
- Figure 5 illustrates a third mode of operation in which the refrigerant fluid circuit A is in a mode of cooling only the batteries or the second heat transfer fluid via the second heat exchanger 10.
- the first device is configured to close access to the first diversion pipe c1
- the third control device is configured to open access to the second diversion pipe c2 and close the access to the first heat exchanger 9.
- the refrigerant fluid arrives at the additional heat exchanger 3 without loss of pressure or temperature.
- the first condenser 2 is pass-through, that is to say it is not crossed by the internal air flow 100 so that the refrigerant fluid passing through it undergoes little or no heat exchange with the internal air flow 100.
- the second pre-expansion device 5 has a maximum opening in the case where the latter is placed on the first main loop A1.
- This mode of operation is identical to the first mode of operation except between the third connection point 33 and the fourth connection point 34.
- the refrigerant fluid is directed from the third connection point 33 towards the second main expansion device 8 where it will undergo a second, higher pressure loss to the first. It then passes into the second heat exchanger 10 where it will absorb the heat energy released by the batteries or the second heat transfer fluid. At the outlet of the second heat exchanger 10, the refrigerant fluid passes through the non-return valve 63, and joins the internal heat exchanger 11 via the fourth connection point 34.
- Figure 6 illustrates a fourth mode of operation corresponding to the combination of the first and the third mode of operation, where the refrigerant fluid circuit A is in a mode of cooling both the internal air flow 100 via the first heat exchanger 9 and both batteries or the second heat transfer fluid via the second heat exchanger 10.
- the second control device is configured to let the refrigerant fluid pass through the first 9 and the second 10 heat exchanger.
- Figure 7 illustrates a fifth inverted mode of operation, in which the refrigerant fluid circuit A is in a mode of heating the internal air flow 100 via the first condenser 2 and recovering the heat coming from the batteries or of the second heat transfer fluid via the second heat exchanger 10.
- the first control device is configured to close access to the additional heat exchanger 3 and open access to the first bypass line c1
- the third control device is configured to open access to the second bypass line c2 and close the access to the first heat exchanger 9.
- the refrigerant fluid leaving the compressor 1 passes through the first condenser 2 and undergoes a heat loss there in favor of the internal air flow 100.
- the internal air flow 100 is thus heated before being heated. reach the passenger compartment.
- the refrigerant fluid continues towards the second pre-expansion device 5 at which it undergoes a first loss of pressure.
- the refrigerant fluid is directed towards the first diversion pipe c1, then reaches the reservoir bottle 6 via the second connection point 32.
- the refrigerant fluid in the liquid phase under -cooled passes through the internal heat exchanger 11 at the level of the first portion 21 where it will undergo a second loss of heat energy in favor of the refrigerant fluid passing into the second portion 22.
- the refrigerant fluid continues towards the third connection point 33 where it is directed towards the second main expansion device 8 where it will undergo a second loss of pressure, greater than the first. It then passes into the second heat exchanger 10 where it will absorb heat energy coming from the batteries or the second heat transfer fluid and pass into the gas phase.
- the refrigerant fluid joins the internal heat exchanger 11 via the fourth connection point 34.
- the refrigerant fluid At the level of the second portion 22 of the internal heat exchanger 11, the refrigerant fluid absorbs heat energy coming from the first portion 21. The refrigerant then returns to the compressor 1.
- Figure 8 illustrates a sixth operating mode in which the refrigerant fluid circuit A is in a defogging mode in parallel with the internal air flow 100.
- the first control device is configured to close access to the additional heat exchanger 3 and open access to the first diversion pipe c1
- the second control device control is configured to pass refrigerant fluid through the first and second heat exchangers.
- the passage through the first heat exchanger 9 makes it possible to absorb heat energy from the internal air flow 100 in order to condense the humidity upstream of its heating by the first condenser 2.
- Figure 9 shows a third embodiment of the thermal management device of the invention.
- the first branch line c1 of the second embodiment is here replaced by a third branch line c3 connecting a fifth connection point 35, arranged on the first main loop A1 downstream of the first condenser 2, to a sixth point connection 36, arranged on the first main loop A1 upstream of the first pre-expansion device 4, and more precisely between the additional heat exchanger 3 and the first pre-expansion device 4.
- a third branch line c3 connecting a fifth connection point 35, arranged on the first main loop A1 downstream of the first condenser 2, to a sixth point connection 36, arranged on the first main loop A1 upstream of the first pre-expansion device 4, and more precisely between the additional heat exchanger 3 and the first pre-expansion device 4.
- a secondary expansion device 12 can be placed on the main loop A1 upstream of the additional heat exchanger 3, and more precisely between the fifth connection point 35 and the heat exchanger. additional heat 3.
- This secondary expansion device 12 can be an expansion device with a variable opening diameter allowing the passage of the refrigerant fluid without loss of pressure when it is open to its maximum diameter.
- An alternative may also be that this secondary expansion device 12 can be bypassed.
- the main loop A1 may include a non-return valve 65 placed between the first condenser 2 and the ninth connection point 39, and making it possible to avoid a reflux of the refrigerant fluid towards the first condenser 2.
- the main loop A1 may comprise a fourth device for controlling the circulation of the refrigerant fluid from the first main loop A1 to the third branch line c3 at the fifth connection point 35.
- This fourth control device may in particular be a stop valve (not shown) arranged on the main branch A1 downstream of the fifth connection point 35.
- the secondary expansion device 12 which includes a flow stopping function, like the main expansion devices 7, 8.
- the first main loop A1 can here comprise a fifth device for controlling the circulation of the refrigerant fluid from the first main loop A1 to the third branch line c3 at the sixth connection point 36.
- This fifth control device can in particular be a three-way valve 60 arranged, as shown, at the sixth connection point 36.
- the fifth control device can comprise two stop valves each arranged upstream of the sixth connection point 36 on the first main loop A1 and on the third branch line c3, respectively.
- the fourth control device is configured to open access to the additional heat exchanger 3 and the fifth control device is configured to close access to the third bypass pipe c3 and open access to first pre-expansion device 4 and the additional heat exchanger 3,
- the secondary expansion device 12 is through, that is to say it has a maximum opening so as to be crossed by the refrigerant fluid with a loss of pressure minimal, like the second pre-release device 5 in certain operating modes of the second embodiment,
- the refrigerant flow passes into the third bypass line c3.
- the fifth control device is configured to open access to the third bypass pipe c3 and close access to the additional heat exchanger 3 so that the refrigerant fluid circulates directly from the first condenser 2 to first subcooling expansion device 4.
- Figure 10 shows a fourth embodiment of the thermal management device of the invention.
- This fourth embodiment can be used for the different embodiments described in relation to the second embodiment and allows new modes of operation where the additional heat exchanger 3 is like an evaporator. To this end, this embodiment takes up the portions of the refrigerant fluid circuit A of the second embodiment and further comprises a fourth and a fifth branch line c4, c5, in fine lines.
- the fourth branch line c4 connects a seventh connection point 37, arranged on the first main loop A1 downstream of the reservoir bottle 6, to an eighth connection point 38, arranged on the first main loop A1 between the first pre-expansion device 4 and the reservoir bottle 6.
- the third diversion point 33 is arranged downstream of the internal heat exchanger 11, and upstream of the first 7 and the second 8 main expansion devices.
- the seventh connection point 37 is confused with the third connection point 33.
- the eighth connection point 38 is located upstream of the connection point 32 and more particularly upstream of the non-return valve 62.
- the fourth diversion pipe c4 may include a non-return valve 64 making it possible to prevent the refrigerant fluid coming from the first pre-expansion device 4 from bypassing the reservoir bottle 6 by passing through the fourth diversion pipe c4.
- the fifth branch line c5 connects a ninth connection point 39, arranged on the first main loop A1 downstream of the additional heat exchanger 3, to a tenth connection point 40, arranged on the first main loop A1 downstream of the evaporator 9, 10.
- the tenth connection point 40 is arranged between the evaporator 9, 10 and the internal heat exchanger 11.
- the tenth connection point 40 is arranged between the fourth connection point 34 and the internal heat exchanger 11.
- the third control device may include a stop valve 55 placed on the fourth branch line c4 downstream of the seventh connection point 37 in order to allow or not the circulation of the refrigerant fluid in the fourth branch line c4.
- the first pre-expansion device 4 can be configured to be able to stop a flow going up towards the additional heat exchanger 3.
- the fifth diversion pipe c5 may include a stop valve 58 in order to prevent the refrigerant fluid leaving the evaporator 9, 10 from rising towards the dual fluid exchanger 3 in the first six embodiments.
- Figure 11 illustrates a seventh mode of operation (for the fourth embodiment of Figure 10) in which the refrigerant fluid circuit A is in a mode of heating the internal air flow 100 via the first condenser 2 and recovery of heat coming from the first heat fluid circuit B1 via the additional heat exchanger 3.
- the additional heat exchanger 3 is not crossed by the refrigerant fluid upstream of the reservoir bottle 6, but downstream.
- the first pre-expansion device 4 therefore does not have the role here of causing the refrigerant fluid to suffer a loss of pressure. upstream of the reservoir bottle 6, but to relax the refrigerant fluid so that it passes at low pressure before passing through the additional heat exchanger 3 and so that it does not absorb the heat energy coming from the first heat fluid of the first heat transfer fluid circuit B1.
- the first control device is configured to redirect the refrigerant fluid coming from the first condenser 2 towards the first diversion pipe c1 and close access to the additional heat exchanger 3 to the refrigerant fluid coming from the first condenser 2, and
- the third control device is configured on the one hand to let the refrigerant fluid coming from the reservoir bottle 6 pass into the fourth diversion pipe c4 and on the other hand to block the refrigerant fluid so that it does not circulate towards the first heat exchanger 9 and through the second bypass pipe c2.
- the refrigerant fluid leaving the compressor 1 passes through the first condenser 2 and there undergoes a first loss of heat energy in favor of the internal air flow 100.
- the internal air flow 100 is thus heated before reaching the passenger compartment.
- the refrigerant fluid continues towards the second pre-expansion device 5 at which it undergoes a first loss of pressure.
- the refrigerant fluid is directed towards the first diversion pipe c1, then reaches the reservoir bottle 6 via the second connection point 32.
- the refrigerant fluid is entirely in the form liquid and passes through the internal heat exchanger 11 at the level of the first portion 21 where it will undergo a second loss of heat energy in favor of the refrigerant fluid passing into the second portion 22.
- the refrigerant fluid continues towards the seventh connection point 37 where it is directed towards the fourth branch pipe c4.
- the refrigerant fluid goes towards the first pre-expansion device 4.
- the refrigerant fluid is prevented from returning to the reservoir bottle 6 at the level of the non-return valve 62 by the higher pressure exerted there by the refrigerant fluid arriving there. from the first branch line c1.
- the refrigerant fluid undergoes a second loss of pressure.
- the refrigerant then passes into the additional heat exchanger 3 where it will absorb the heat energy coming from the first heat fluid of the first heat transfer fluid circuit B1.
- the refrigerant fluid leaving the additional heat exchanger 3 arrives at the ninth connection point 39 at which it is directed towards the fifth branch line c5 to the extent that the first control device closes access to the exchanger 3.
- the refrigerant fluid then joins the first main loop A1 at the tenth connection point 40, then is directed towards the internal heat exchanger 11 by the action of the non-return valves 61, 63 which prevents it from rising again. towards the first 9 and the second 10 heat exchanger. At the second portion 22, it absorbs heat energy coming from the first portion 21.
- the refrigerant then returns to the compressor 1.
- Figure 12 illustrates an eighth mode of operation (for the fourth embodiment of Figure 10) in which the refrigerant fluid circuit A is in a demisting mode in parallel with the internal air flow 100.
- This mode operating mode therefore represents an alternative to the sixth operating mode of Figure 8.
- this mode of operation is similar to the seventh mode of operation with the difference that the refrigerant fluid at the seventh connection point 37 is split into two parts where a first part is directed towards the fourth branch line c4 and a second part is directed towards the third connection point 33 towards the first main expansion device 7 and the first heat exchanger 9.
- the two parts of the refrigerant then join at the level of the tenth connection point 40, then pass through the internal heat exchanger 11 and return to compressor 1.
- the second control device is configured on the one hand to let the refrigerant fluid coming from the reservoir bottle 6 pass into the fourth diversion pipe c4 and towards the first heat exchanger 9 and on the other hand to block the refrigerant fluid so that it does not circulate through the second branch pipe c2.
- Figure 13 illustrates the fifth embodiment.
- This fifth embodiment corresponds to a variant of the fourth embodiment of Figure 10 comprising a sixth bypass pipe making it possible to bypass the first condenser 2 for the cooling operating modes (first, third and fourth operating modes ).
- This fifth embodiment therefore comprises a sixth branch line c6 connecting an eleventh connection point 81, located on the first main loop A1 downstream of the compressor 1, to a twelfth connection point 82, located on the first loop main A1 upstream of the additional heat exchanger 3. More precisely, the eleventh connection point 81 is arranged between the compressor 1 and the first condenser 2, and the twelfth connection point 82 is arranged between the first connection point 31 and the double fluid exchanger 3. In particular, the twelfth connection point is arranged upstream or downstream of the ninth connection point 39. In an alternative, the twelfth connection point is arranged on the third diversion pipe c5, in particular in upstream of the stop valve 58.
- the refrigerant circuit can include a sixth device for controlling the circulation of the refrigerant fluid of the first main loop A1 towards the sixth branch line c6 at the eleventh connection point 81.
- This sixth control device can in particular be a three-way valve arranged at the eleventh connection point 81.
- the sixth control device can comprise two shut-off valves 56, 57, each disposed downstream of the eleventh connection point 81 on the first main loop A1 and on the sixth bypass pipe, respectively.
- the stop valves 56, 57 can have variable opening managed electronically.
- the refrigerant fluid leaving the compressor 1 arrives at the eleventh connection point 81 where it is directed towards the sixth branch line c6.
- the refrigerant then joins the additional heat exchanger 3 via the twelfth connection point 82.
- the remainder of the respective implementation of these operating modes is identical to what is described in relation to the second embodiment.
- a sixth and a seventh embodiment are shown in Figures 14A to 18 and include a second main loop A2, in thick lines, which directly connects the compressor 1 to the additional heat exchanger 3.
- the second main loop A2 comprises, in the direction of circulation of the refrigerant fluid, the compressor 1, the additional heat exchanger 3, the first pre-expansion device 4, the reservoir bottle 6 and the evaporator 9, 10
- the second main loop A2 can also include the internal heat exchanger 11.
- Figures 14A, 14B represent two variants (A and B) of the sixth embodiment where the second main loop A2 comprises, downstream of the reservoir bottle 6, the first main expansion device 7 and the first heat exchanger 9.
- the two variants differ in terms of elements used for the first pre-release device 4.
- the pre-release device 4 is identical to that used in the first five embodiments.
- the refrigerant fluid circuit A can comprise a first branch branch d1 connecting a first junction point 41, arranged on the second main loop A2 downstream of the compressor 1, to a second junction point 42, arranged on the second main loop A2 between the additional heat exchanger 3 and the first pre-expansion device 4.
- the refrigerant circuit can comprise a seventh device for controlling the circulation of the refrigerant fluid from the second main loop A2 towards the first branch branch d1 at the first junction point 41.
- This seventh control device can in particular be a three-way valve arranged at the first junction point 41.
- the seventh control device can comprise two stop valves 96, 97, each placed downstream of the first junction point 41 on the second main loop A2 and on the first branch branch d1, respectively.
- the stop valves 96, 97 can have variable opening managed electronically.
- the refrigerant circuit can comprise an eighth device for controlling the circulation of the refrigerant fluid from the second main loop A2 towards the first branch d1 at the second junction point 42.
- this eighth control device can in particular be a three-way valve 59, as shown in Figure 14A, arranged at the second junction point 42.
- the eighth control device can comprise two control valves. stop, one arranged downstream of the second junction point 42 on the second main loop A2 and the other arranged upstream of the second junction point 42 on the first branch branch d1, respectively.
- the pre-expansion device 4 is formed by two non-return valves preprogrammed 71, 72, arranged upstream of the second junction point 42 on the first branch branch d1 and on the second main loop A2, respectively.
- the eighth control device can correspond to the two pre-programmed expansion non-return valves 71, 72.
- the refrigerant fluid circuit A can comprise the second branch line c2 comprising the second main expansion device 8 and the second heat exchanger 10.
- the refrigerant fluid leaving the compressor 1 first arrives at the first junction point 41 where it is directed towards the internal exchanger 2 which it passes through and there undergoes a heat loss in favor of the internal air flow 100.
- the internal air flow 100 is thus heated before reaching the passenger compartment.
- the refrigerant fluid continues towards the second junction point 42 where it is directed towards the first pre-expansion device 4 at which it undergoes a first loss of pressure. Then the refrigerant fluid reaches the reservoir bottle 6.
- the refrigerant fluid in the subcooled liquid phase passes through the internal heat exchanger 11 at the level of the first portion 21 where it will undergo a second loss of heat. heat energy for the benefit of the refrigerant fluid passing through the second portion 22.
- the refrigerant fluid continues towards the third connection point 33 where it is directed towards the second main expansion device 8 where it will undergo a second loss of pressure, greater than the first one. It then passes into the second interchange heat 10 where it will absorb heat energy coming from the batteries or the second heat transfer fluid and pass into the gas phase.
- the refrigerant fluid joins the internal heat exchanger 11 via the fourth connection point 34.
- the refrigerant fluid absorbs heat energy coming from the first portion 21. The refrigerant then returns to the compressor 1.
- Figure 15 illustrates a mode of operation (for the sixth mode of operation of Figures 14A and 14B) in which the refrigerant circuit A is in a mode of cooling only the internal air flow 100 via the first exchanger heat 9.
- the fifth and the eighth control device are configured to close access to the first branch branch d1.
- the refrigerant fluid first arrives at the first junction point 41 where it is directed towards the additional heat exchanger 3. At the level of the additional heat exchanger 3, it gives up heat energy to the first heat fluid of the first heat transfer fluid circuit B1. It then joins the first pre-release device 4 via the second junction point 42. At the level of the first pre-expansion device 4 it undergoes a first loss of pressure. The refrigerant fluid then joins the reservoir bottle 6. At the outlet of the reservoir bottle 6, the refrigerant fluid passes through the first portion 21 of the internal heat exchanger 11 where it will undergo a third loss of heat energy in favor of the refrigerant fluid. passing into the second portion 22.
- the refrigerant fluid continues towards the third connection point 33 where it is directed towards the first main expansion device 7 at which it undergoes a second loss of pressure, greater than the first, in order to arrive at low pressure.
- the refrigerant fluid then passes into the first heat exchanger 9 where it absorbs heat energy from the internal air flow 100.
- the internal air flow 100 is thus cooled.
- the refrigerant fluid joins the fourth connection point 34.
- the refrigerant fluid then continues towards the second portion 22 of the internal heat exchanger 11 where it absorbs heat energy coming from the first portion 21.
- the refrigerant then returns to the compressor 1.
- Figure 16 illustrates a tenth mode of operation (for the sixth mode of operation of Figures 14A and 14B) in which the refrigerant circuit A is in a mode of cooling only the batteries via the second heat exchanger 9.
- This mode of operation is identical to the ninth mode of operation except between the third connection point 33 and the fourth connection point 34.
- the refrigerant fluid is directed from the third connection point 33 towards the second expansion device main 8 where it will suffer a second loss of pressure, greater than the first. It then passes into the second heat exchanger 10 where it will absorb the heat energy released by the batteries. At the outlet of the second heat exchanger 10, the refrigerant fluid joins the internal heat exchanger 11 via the fourth connection point 34 before returning to the compressor 1.
- Figure 17 illustrates an eleventh mode of operation (for the sixth mode of operation of Figures 14A and 14B) corresponding to the combination of the ninth and the tenth mode of operation, where the refrigerant circuit A is in a mode of cooling both the internal air flow 100 and both the batteries.
- the second control device is configured to let the refrigerant fluid pass through the first and the second heat exchangers 9, 10.
- Figure 18 illustrates a seventh embodiment of the invention.
- This seventh embodiment is a variant of the sixth embodiment and therefore incorporates its elements to which is added a second branch of branch d2 connecting a third junction point 43, arranged on the first branch of branch d1 downstream of the first condenser 2, at a fourth junction point 44, arranged on the second main loop A2 upstream of the additional heat exchanger 3.
- the first branch of diversion d1 can comprise the non-return valve 65 arranged here between the first condenser 2 and the third connection point 33.
- the second branch of branch d2 can comprise the secondary expansion device 12.
- this seventh embodiment allows a mode of operation in which the refrigerant circuit A is in a series defogging mode of the internal air flow 100.
- the refrigerant fluid leaving the compressor 1 first arrives at the first junction point 41 where it is directed towards the first condenser 2 which it passes through and there undergoes a heat loss in favor of the internal air flow 100. THE internal air flow 100 is thus heated before reaching the passenger compartment.
- the refrigerant fluid continues towards the second junction point 42 where it is directed towards the secondary expansion device 12 within which it undergoes a first loss of pressure.
- the refrigerant fluid continues towards the additional heat exchanger 3. Within the additional heat exchanger 3, the refrigerant fluid absorbs heat energy from the first heat transfer fluid of the first heat fluid circuit B1 due to the fact that it has already given up heat energy via the first condenser 2 and has suffered a first loss of pressure while passing through the secondary expansion device 12.
- the refrigerant fluid then arrives at the second junction point 42 where it is directed towards the first pre-expansion device 4.
- the refrigerant fluid then passes through the first pre-expansion device 4 where it possibly undergoes a second loss of pressure before joining the reservoir bottle 6.
- the rest of this mode of operation is identical to that of the ninth operating mode.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2210501 | 2022-10-12 | ||
| PCT/EP2023/078283 WO2024079237A1 (fr) | 2022-10-12 | 2023-10-12 | Dispositif de gestion thermique d'un vehicule automobile electrique ou hybride comprenant un circuit de fluide refrigerant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4601894A1 true EP4601894A1 (fr) | 2025-08-20 |
Family
ID=84362786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23786284.2A Pending EP4601894A1 (fr) | 2022-10-12 | 2023-10-12 | Dispositif de gestion thermique d'un vehicule automobile electrique ou hybride comprenant un circuit de fluide refrigerant |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4601894A1 (fr) |
| CN (1) | CN119998147A (fr) |
| WO (1) | WO2024079237A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010042127B4 (de) * | 2010-10-07 | 2020-09-17 | Audi Ag | Kältemittelkreislauf einer Klimaanlage eines Kraftfahrzeuges |
| FR2999689A1 (fr) * | 2012-12-14 | 2014-06-20 | Valeo Systemes Thermiques | Circuit et procede de conditionnement d'air, notamment pour vehicule automobile |
| DE102013206626A1 (de) * | 2013-04-15 | 2014-10-16 | Bayerische Motoren Werke Aktiengesellschaft | Wärmepumpenanlage sowie Verfahren zur Klimatisierung eines Fahrzeuges |
| FR3082456B1 (fr) * | 2018-06-18 | 2020-11-27 | Valeo Systemes Thermiques | Systeme de traitement thermique pour vehicule |
-
2023
- 2023-10-12 EP EP23786284.2A patent/EP4601894A1/fr active Pending
- 2023-10-12 CN CN202380072712.1A patent/CN119998147A/zh active Pending
- 2023-10-12 WO PCT/EP2023/078283 patent/WO2024079237A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024079237A1 (fr) | 2024-04-18 |
| CN119998147A (zh) | 2025-05-13 |
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Owner name: VALEO ELECTRIFICATION |