Thermal management system for a vehicle
Patent Information
- Application Number
- EP2023817771
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-01-02
- Filing Date
- 2023-12-05
- Publication Date
- 2025-11-12
AI Technical Summary
Current thermal management systems for vehicles are bulky due to the complexity and number of components, particularly in heat pump systems, which hinders compactness and integration efficiency.
A thermal management system utilizing a 6-way valve to connect two heat transfer fluid loops, allowing for various thermal operating modes and reducing the number of components by enabling shared cooling radiators and heat exchangers, thus simplifying architecture and enhancing compactness.
The system achieves reduced component count, improved compactness, and flexibility in thermal management, allowing for efficient cooling and heating of vehicle components like electric motors and batteries, while integrating seamlessly into vehicle designs.
Smart Images
Figure 1.1
Abstract
Description
Description Title of the invention: THERMAL MANAGEMENT SYSTEM FOR VEHICLE [1] The present invention relates to a thermal management system for a vehicle. [2] The vehicle can be land, sea or air. [3] Generally speaking, we are trying to reduce the size of components in vehicles. This is a major challenge. In the context of a vehicle heat pump, one avenue of work is to compact all of its components, in particular the refrigerant circuit and the heat transfer fluid circuit. [4] The invention aims in particular at such an aim. [5] The invention thus relates to a thermal management system for a vehicle, comprising: - a first heat transfer fluid circulation loop, configured to ensure thermal management of a first assembly which notably comprises an electric motor and / or power electronics associated with this electric motor, this first heat transfer fluid circulation loop comprising: o a first heat transfer fluid circulation branch on which is placed a first cooling radiator, notably placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this first cooling radiator, o a second heat transfer fluid circulation branch on which is placed a first heat exchanger configured to allow the heat transfer fluid to exchange heat, within this heat exchanger, with another heat transfer fluid, in particular a refrigerant fluid, of a vehicle air conditioning device, - a second heat transfer fluid circulation loop, configured to ensure thermal management of a second assembly which notably comprises a battery capable of electrically supplying the first assembly, this second heat transfer fluid circulation loop comprising: o a first heat transfer fluid circulation branch on which is placed a second cooling radiator, notably placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this second cooling radiator, o a second heat transfer fluid circulation branch on which is placed a second heat exchanger configured to allow the heat transfer fluid to exchange heat, within this heat exchanger, with another heat transfer fluid, notably a refrigerant fluid, of an air conditioning device of the vehicle, - a 6-way valve fluidically connected to the first and second branches respectively of the first and second heat transfer fluid circulation loops, this 6-way valve being capable of taking four angular positions in order to operate, selectively according to one of the four possible combinations, one of the two branches of one of the loops at the same time as one of the two branches of the other of the loops. [6] Thanks to the invention, in particular by the use of a 6-way valve which is common to the two thermal management loops, it is possible to simplify the architecture of the system, to reduce the number of components, or even to facilitate its integration into the vehicle, while allowing different thermal operating modes. The invention also makes it possible to make the system more compact. [7] The invention makes it possible, for example, to have a grouping of several fluidic functions of a heat pump. [8] The invention further makes it possible to avoid the need for additional tubing / pipes to fluidically connect different components together. [9] Thermal management can help cool or, in some cases, heat certain components, for example the battery.
[0010] According to one aspect of the invention, the 6-way valve is configured to take a first angular position in which the first branch of both the first loop and the second heat transfer fluid circulation loop are used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the cooling radiators.
[0011] In this first position of the 6-way valve, the first and second sets are cooled using the first and second cooling radiators on the first branches, without using the first and second heat exchangers.
[0012] According to one aspect of the invention, the 6-way valve is configured to take a second angular position in which the first branch of the first heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the first cooling radiator, and the second branch of the second heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the second heat exchanger.
[0013] In this second angular position of the 6-way valve, the first and second sets can be cooled using two different types of heat exchanges, one with the first cooling radiator and the other with the second heat exchanger.
[0014] According to one aspect of the invention, the 6-way valve is configured to assume a third angular position in which the second branch of both the first loop and the second heat transfer fluid circulation loop are used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the respective heat exchanger.
[0015] According to one aspect of the invention, the 6-way valve is configured to take a fourth angular position in which the second branch of the first heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the first heat exchanger, and the first branch of the second heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the second cooling radiator.
[0016] In each heat transfer fluid circulation loop, the first and second branches share a common section on which is placed a pump, in particular an electric pump, configured to circulate the heat transfer fluid in one or other of the branches, depending on the angular position of the 6-way valve.
[0017] In the third angular position of the 6-way valve, one of the two pumps of the two loops can be stopped, or both pumps can be stopped, so as to block the circulation of heat transfer fluid in the loop concerned by the stopped pump.
[0018] It should be noted that when both pumps are stopped, thus blocking the flow of fluid in both loops, the position of the 6-way valve is indifferent.
[0019] In the third angular position of the 6-way valve, both pumps can be operated so that heat transfer fluid circulates in the second branches of both loops.
[0020] In this third angular position of the 6-way valve, the first and second sets can be cooled using the two heat exchangers of the two loops.
[0021] According to one aspect of the invention, the first and second cooling radiators are two separate radiators.
[0022] Alternatively, the first and second cooling radiators are two parts, particularly two halves, of a single radiator.
[0023] Alternatively, the first and second cooling radiators are formed by the same cooling radiator.
[0024] According to one aspect of the invention, the first and second heat exchangers are two separate heat exchangers.
[0025] Alternatively, the first and second heat exchangers are two parts, particularly two halves, of a single heat exchanger.
[0026] Alternatively, the first and second heat exchangers are formed by the same heat exchanger.
[0027] According to one aspect of the invention, the 6-way valve comprises a housing and a wheel rotatably placed in the housing, and the housing comprises six heat transfer fluid inlet / outlet openings defining the 6 ways of the 6-way valve.
[0028] According to one aspect of the invention, the wheel is rotatable so as to be able to take the first, second, third and fourth angular positions.
[0029] According to one aspect of the invention, the six heat transfer fluid inlet / outlet openings are grouped into two groups, each group being dedicated to one of the loops.
[0030] According to one aspect of the invention, the two groups are arranged in mirror symmetry with respect to each other by a plane of symmetry which contains the axis of rotation of the 6-way valve.
[0031] According to one aspect of the invention, in each group, the three inlet / outlet openings are arranged, two by two, with an angle between them of 34°.
[0032] This angle value can be different, depending on the needs.
[0033] According to one aspect of the invention, the wheel of the 6-way valve comprises four chambers arranged around the axis of rotation of the 6-way valve, these chambers being separated two by two by a partition, and each being arranged to communicate with each other two heat transfer fluid inlet / outlet openings, depending on the angular position.
[0034] According to one aspect of the invention, these partitions are angularly separated two by two, by angles of 1 12°, 86°, 76° and 86° respectively, when going around the wheel.
[0035] According to one aspect of the invention, these partitions are formed by a central core of the wheel.
[0036] According to one aspect of the invention, if the first angular position of the 6-way valve is taken as the reference angular position, the thermal management system is configured to rotate the wheel through an angle of +180° to move from the first position to the third position, through an angle of +112° to move from the first position to the second position and through an angle of -112° to move from the first position to the fourth position.
[0037] The above values are given as examples and other suitable values can, of course, be used.
[0038] According to one aspect of the invention, the first branch of each loop communicates with an expansion tank.
[0039] According to one aspect of the invention, the two expansion vessels are produced on a body, in particular a single-piece body, in particular by two reservoirs formed on this body.
[0040] The two expansion tanks allow the heat transfer fluid loaded with air bubbles to be freed from air bubbles.
[0041] According to one aspect of the invention, the two tanks are separated by a partition, in particular from the single-piece body.
[0042] According to one aspect of the invention, the body comprises a plate forming a seat for a pump, in particular a seat with a volute for the pump.
[0043] According to one aspect of the invention, the 6-way valve is mounted on this plate.
[0044] According to one aspect of the invention, fluid circulation channels are formed between this plate and an additional plate which are applied against each other in a sealed manner.
[0045] According to one aspect of the invention, the body and the fluid-function components such as pumps and the 6-way valve, mounted on the body, form a module.
[0046] The invention makes it possible to have a module integrating different functions and which is compact.
[0047] The invention also relates to a heat pump, in particular on board a vehicle, comprising a thermal management system as mentioned above, and in particular integrated with a vehicle passenger compartment air conditioning circuit.
[0048] The heat pump is notably of the direct type.
[0049] The invention also relates to a thermal management method, using a thermal management system comprising: - a first heat transfer fluid circulation loop, configured to ensure thermal management of a first assembly which notably comprises an electric motor and / or power electronics associated with this electric motor, this first heat transfer fluid circulation loop comprising: o a first heat transfer fluid circulation branch on which is placed a first cooling radiator, notably placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this first cooling radiator, o a second heat transfer fluid circulation branch on which is placed a heat exchanger configured to allow the heat transfer fluid to exchange, within this heat exchanger, calories with another heat transfer fluid, notably a heat transfer fluid, for example a refrigerant fluid, of an air conditioning device of the vehicle, - a second heat transfer fluid circulation loop, configured to ensure thermal management of a second assembly which notably includes a battery capable of electrically supplying the first together, this second heat transfer fluid circulation loop comprising: o a first heat transfer fluid circulation branch on which is placed a second cooling radiator, in particular placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this second cooling radiator, o a second heat transfer fluid circulation branch on which is placed a heat exchanger configured to allow the heat transfer fluid to exchange, within this heat exchanger, calories with another heat transfer fluid, in particular a heat transfer fluid, for example a refrigerant fluid, of an air conditioning device of the vehicle, - a 6-way valve fluidically connected to the first and second branches respectively of the first and second heat transfer fluid circulation loops, the thermal management method comprising the following step: - operate the 6-way valve so that it is placed, selectively, in an angular position following one of the four possible combinations in which one of the two branches of one of the loops operates at the same time as one of the two branches of the other of the loops.
[0050] Other characteristics and advantages of the invention will appear more clearly on reading the following description, given as an illustrative and non-limiting example, and the appended drawings among which:
[0051] - [Figure 1] illustrates, schematically and partially, a thermal management system according to an exemplary embodiment of the invention, for a first angular position of the valve;
[0052] - [Figure 2] illustrates, schematically and partially, the thermal management system of [Figure 1], for a second angular position of the valve;
[0053] - [Figure 3] illustrates, schematically and partially, the thermal management system of [Figure 1], for a third angular position of the valve;
[0054] - [Figure 4] illustrates, schematically and partially, the thermal management system of [Figure 1], for a third angular position of the valve and another mode of operation;
[0055] - [Figure 5] illustrates, schematically and partially, the thermal management system of [Figure 1], for a third angular position of the valve and yet another mode of operation;
[0056] - [Figure 6] illustrates, schematically and partially, the thermal management system of [Figure 1], for a fourth angular position of the valve;
[0057] - [Figure 7] illustrates, schematically and partially, in perspective, the module forming part of the thermal management system of [Figure 1];
[0058] - [Figure 8] illustrates, schematically and partially, in perspective, the module of [Figure 7], according to another view;
[0059] - [Figure 9] illustrates, schematically and partially, in section, the module of [Figure 7];
[0060] - [Figure 10] illustrates, schematically and partially, in perspective, the valve wheel of the module of [Figure 7];
[0061] - [Figure 11] illustrates, schematically and partially, the angles between the openings of the valve of the module of [Figure 7];
[0062] - [Figure 12] illustrates, schematically and partially, the angles between the partitions of the valve of the module of [Figure 7],
[0063] There are many possible operating modes for the thermal management system. Figures 1 to 6 illustrate different operating methods of a thermal management system. In these figures, thick dotted lines represent the circulation of heat transfer fluid.
[0064] Figure 1 shows a thermal management system 1 for a motor vehicle, comprising: - a first heat transfer fluid circulation loop 100, configured to ensure thermal management of a first assembly 101 which comprises an electric motor and / or power electronics associated with this electric motor, this first heat transfer fluid circulation loop 100 comprising: o a first heat transfer fluid circulation branch 110 on which is placed a first cooling radiator 111, placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this first cooling radiator 111, o a second heat transfer fluid circulation branch 120 on which is placed a first heat exchanger 121, also called a “chiller” in English, configured to allow the heat transfer fluid to exchange heat, within this heat exchanger 121, with another heat transfer fluid, here a refrigerant, of an air conditioning device 150,with HVAC, vehicle, - a second heat transfer fluid circulation loop 200, configured to ensure thermal management of a second assembly 201 which comprises a battery capable of electrically powering the first assembly 101, this second heat transfer fluid circulation loop 200 comprising: o a first heat transfer fluid circulation branch 210 on which is placed a second cooling radiator 211, placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this second cooling radiator 211, o a second heat transfer fluid circulation branch 220 on which is placed a second heat exchanger 221, or "chiller" in English, configured to allow the heat transfer fluid to exchange heat, within this heat exchanger 221, with another heat transfer fluid, here the refrigerant, of the air conditioning device of the vehicle 150, - a 6-way valve 300 fluidly connected to the first and second branches 110, 210 and 210, 220 respectively of the first and second heat transfer fluid circulation loops 100 and 200, this 6-way valve 300 being capable of taking four angular positions POS1, POS2, POS3 and POS4 in order to operate, selectively according to one of the four possible combinations POS1, POS2, POS3 and POS4, one of the two branches of one of the loops at the same time as one of the two branches of the other of the loops, as will be described below.
[0065] The English term "HVAC", meaning "Heating, Ventilating and Air Conditioning", refers to a heating, ventilation and air conditioning installation.
[0066] The heat transfer fluid circulating in the first and second loops 100 and 200 is here glycolated water.
[0067] The refrigerant in the air conditioning device 150 is selected from R134a, R1234yf or R744.
[0068] The exchangers 121 and 221 are of the plate or tube type, in particular mini-channel tubes, forming evaporation exchangers, also called “chillers” in English.
[0069] The cooling radiators 1 1 1 and 211 comprise tubes in which the heat transfer fluid circulates and between which a flow of moving air allows the tubes, and therefore the heat transfer fluid, to be cooled.
[0070] The thermal management system 1 is part of a heat pump, installed on the vehicle. The heat pump is, for example, of the direct type.
[0071] The assembly 201 may comprise, in addition to the battery, an electric heating device for heating the heat transfer fluid.
[0072] In each heat transfer fluid circulation loop 100 and 200, the first and second branches 110 and 120, respectively 210 and 220, share a common section 140, respectively 240, on which is placed an electric pump 141, respectively 241, configured to circulate the heat transfer fluid in one or other of the branches 110 and 120, respectively 210 and 220, depending on the angular position of the 6-way valve 300.
[0073] The first branch 110, respectively 210, of each loop 100, respectively 200, communicates with an expansion vessel 130, respectively 230, which allow heat transfer fluid loaded with air bubbles to be freed from air bubbles, the expansion tank 130 also allowing the expansion of the heat transfer fluid to be absorbed.
[0074] The 6-way valve 300 is configured to take a first angular position POS1 in which the first branch 1 10 and 210 of both the first loop 100 and the second loop 200 for circulating heat transfer fluid are used for circulating heat transfer fluid so as to cool the heat transfer fluid by the cooling radiators 1 1 1 and 21 1 . These fluid circulations, for the first angular position POS1 , are illustrated in FIG. 1 .
[0075] In this first position POS1 of the 6-way valve 300, the first and second sets 101 and 201 are cooled using the first and second cooling radiators 1 1 1 and 21 1 on the first branches 1 10 and 210, without using cooling by heat exchangers 121 and 221.
[0076] In this first position POS1 of the 6-way valve 300, it is possible to have cooling of the passenger compartment by the air conditioning device 150, and at the same time, cooling of the electric motor and / or the power electronics 101 and the battery 201 by the cooling radiators 1 1 1 and 21 1 on the front face.
[0077] The 6-way valve 300 is configured to take a second angular position POS2 illustrated in FIG. 2, in which the first branch 110 of the first heat transfer fluid circulation loop 100 is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the first cooling radiator 111, and the second branch 220 of the second heat transfer fluid circulation loop 200 is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the second heat exchanger 221.
[0078] In this second angular position POS2 of the 6-way valve 300, the first and second sets 101 and 201 can be cooled using two different types of heat exchanges, one with the first cooling radiator 111 and the other with the second heat exchanger 221.
[0079] In this second angular position POS2 of the 6-way valve 300, the air conditioning device 150 can be switched on to air condition the passenger compartment, or not be used for air conditioning the passenger compartment.
[0080] The 6-way valve is configured to take a third angular position POS3 illustrated in FIG. 3, and the second branch 120, 220 of both the first loop 100 and the second loop 200 for circulating heat transfer fluid are used for circulating heat transfer fluid so as to cool the heat transfer fluid by the respective heat exchanger 121, 221. In this mode of operation, the two pumps 141 and 241 are put into operation so that heat transfer fluid circulates in the second branches 120, 220 of the two loops 100, 200.
[0081] When the 6-way valve 300 is in the third angular position POS3, it is possible to activate the heating of the passenger compartment by the direct heat pump including a front-facing evapo-condenser, not shown, configured to recover calories from the ambient air, and an internal condenser (not shown) of the HVAC is then used to send hot air into the passenger compartment. Furthermore, in the operating mode of FIG. 3, the second branches 120 and 220 allow recovery of thermal energy from the traction assembly 101, here the electric motor and power electronics, and from the battery 201.
[0082] In the modes illustrated in Figures 1 to 3, pumps 141 and 241 are operated.
[0083] In another operating mode with the 6-way valve 300 in the third angular position POS3, the two pumps 141 and 241 are switched off in the case where there is no need to cool the traction assembly 101 and the battery 201. In this situation, it is possible to activate the heating of the passenger compartment by the direct heat pump including a front face evapo-condenser, not shown, configured to recover calories ambient air, and an internal HVAC condenser (not shown) is then used to send warm air into the passenger compartment.
[0084] In another operating mode (illustrated in Figure 4) with the 6-way valve 300 in the third angular position POS3, the pump 141 is off and the pump 241 is on. In this operating mode illustrated in Figure 4, the cooling requirement concerns only the battery 201. In this situation, it is possible to activate the heating of the passenger compartment by the direct heat pump including a front-facing evapo-condenser, not shown, configured to recover calories from the ambient air, and an internal condenser (not shown) of the HVAC is then used to send hot air into the passenger compartment.
[0085] In another operating mode (illustrated in Figure 5) with the 6-way valve 300 in the third angular position POS3, the pump 141 is running and the pump 241 is off. In this operating mode illustrated in Figure 5, the cooling requirement concerns only the assembly 101. In this situation, it is possible to activate the heating of the passenger compartment by the direct heat pump including a front-facing evapo-condenser, not shown, configured to recover calories from the ambient air, and an internal condenser (not shown) of the HVAC is then used to send hot air into the passenger compartment.
[0086] The 6-way valve 300 is configured to take a fourth angular position POS4 (illustrated in FIG. 6) in which the second branch 120 of the first heat transfer fluid circulation loop 100 is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the first heat exchanger 121, and the first branch 210 of the second heat transfer fluid circulation loop 200 is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the second cooling radiator 211.
[0087] It can be seen that, for certain angular positions of the 6-way valve 300, several operating modes are possible.
[0088] In the example described, the first and second cooling radiators 111 and 211 are two separate radiators.
[0089] The first and second heat exchangers 121 and 221 are two separate heat exchangers.
[0090] We will now describe the 6-way valve 300 in more detail.
[0091] As illustrated in Figure 9, the 6-way valve 300 includes a housing 301 formed on a body 350 and an impeller 302 rotatably disposed in the housing 301.
[0092] The housing 301 comprises six heat transfer fluid inlet / outlet openings 310 defining the 6 ways of the 6-way valve 300, which are fluidically connected to the four branches 110, 120, 210 and 220, forming four valve inlets and two valve outlets.
[0093] The wheel 302 is rotatable so as to be able to take the first, second, third and fourth angular positions POS1, POS2, POS3 and POS4.
[0094] The six heat transfer fluid inlet / outlet openings 310 are grouped into two groups, each group being dedicated to one of the loops 100, 200.
[0095] The two groups of openings 310 are arranged in mirror symmetry with respect to each other by a plane of symmetry PS which contains the axis of rotation X of the 6-way valve 300.
[0096] In the example described, for each group, the three inlet / outlet openings are arranged, two by two, with an angle between them of 34°, as shown in Figure 11.
[0097] This angle value may be different, depending on the design.
[0098] The wheel 302 of the 6-way valve 300 comprises four chambers 312 arranged around the axis of rotation X of the 6-way valve 300, these chambers 312 being separated two by two by a partition 314, and each being arranged to communicate with each other two inlet / outlet openings 310 for heat transfer fluid, depending on the angular position.
[0099] These partitions 314 are angularly separated two by two, by angles of 112°, 86°, 76° and 86° respectively, when going around the wheel, as shown in figure 12.
[0100] These partitions are formed by a central core of the wheel 302.
[0101] If the first angular position POS1 of the 6-way valve 300 is taken as the reference angular position, the thermal management system 1 is configured to rotate the wheel through an angle of +180° to move from the first position POS1 to the third position POS3, through an angle of +112° to move from the first position POS1 to the second position POS2 and through an angle of -112° to move from the first position POS1 to the fourth position POS4.
[0102] The above values are given as examples and other suitable values can, of course, be used.
[0103] We will now describe in more detail the 350 body and the fluidic functions it integrates.
[0104] As illustrated in Figures 7 to 9, the monobloc type body 350 comprises a plate 351 forming a seat 352 with a volute 353 for each of the pumps 141 and 241.
[0105] The housing 301 of the 6-way valve 300 is formed on this plate 351.
[0106] The 6-way 300 valve is associated with an electric actuator.
[0107] Fluid circulation channels 355 are formed between this plate 351 and an additional plate 356 which are applied against each other in a sealed manner.
[0108] The body 350 and the plate 356 include fluid connection tips 360 for connecting the branches 110, 120, 210 and 220.
[0109] The body 350 and the fluidic function components, here the pumps 141 and 241, and the 6-way valve 300, mounted on the body 350 form a compact module that can be easily integrated into the vehicle.
[0110] The two expansion tanks 130 and 230 are produced on the single-block body 350, by two reservoirs 131 and 231.
[0111] The two tanks 131 and 231 are separated by a partition 357, in particular from the single-piece body 350. A cover 361 is provided to close the two tanks 131 and 231.
Claims
Claims
1. Thermal management system (1) for a vehicle, comprising: - a first heat transfer fluid circulation loop (100), configured to ensure thermal management of a first assembly (101) which notably comprises an electric motor and / or power electronics associated with this electric motor, this first heat transfer fluid circulation loop (100) comprising: o a first heat transfer fluid circulation branch (110) on which is placed a first cooling radiator (111), notably placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this first cooling radiator (111), o a second heat transfer fluid circulation branch (120) on which is placed a first heat exchanger (121) configured to allow the heat transfer fluid to exchange heat, within this heat exchanger (121), with another heat transfer fluid, notably a refrigerant fluid,of an air conditioning device (150) of the vehicle, - a second heat transfer fluid circulation loop (200), configured to ensure thermal management of a second assembly (201) which notably comprises a battery capable of electrically supplying the first assembly (101), this second heat transfer fluid circulation loop (200) comprising: o a first heat transfer fluid circulation branch (210) on which is placed a second cooling radiator (211), notably placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this second cooling radiator (211), o a second heat transfer fluid circulation branch (220) on which is placed a second heat exchanger (221) configured to allow the heat transfer fluid to exchange heat, within this heat exchanger (221), with another heat transfer fluid, in particular a refrigerant fluid, of an air conditioning device (150) of the vehicle, - a 6-way valve (300) fluidically connected to the first and second branches respectively of the first and second heat transfer fluid circulation loops (100, 200), this 6-way valve (300) being capable of taking four angular positions (POS1, POS2, POS3 and POS4) in order to operate, selectively according to one of the four possible combinations, one of the two branches (110, 120, 210, 220) of one of the loops (100, 200) at the same time as one of the two branches of the other of the loops.
2. Thermal management system according to the preceding claim, wherein the 6-way valve (300) is configured to take a first angular position (POS1) in which the first branch (1 10, 210) of both the first loop and the second heat transfer fluid circulation loop are used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the cooling radiators (1 1 1 , 21 1 ).
3. Thermal management system according to one of the preceding claims, wherein the 6-way valve (300) is configured to take a second angular position (POS2) in which the first branch (1 10) of the first heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the first cooling radiator (1 1 1 ), and the second branch (220) of the second heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the second heat exchanger (221 ).
4. Thermal management system according to one of the preceding claims, in which the 6-way valve (300) is configured to take a third angular position (POS3) in which the second branch (120, 220) of both the first loop and the second heat transfer fluid circulation loop are used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the respective heat exchanger (121, 221).
5. Thermal management system according to one of the preceding claims, wherein the 6-way valve (300) is configured to take a fourth angular position (POS4) in which the second branch (120) of the first heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the first heat exchanger (121), and the first branch (210) of the second heat transfer fluid circulation loop is used for the circulation of heat transfer fluid so as to cool the heat transfer fluid by the second cooling radiator (211).
6. Thermal management system according to one of the preceding claims, in which the 6-way valve (300) comprises a housing (301) and a wheel (302) rotatably placed in the housing, and the housing comprises six heat transfer fluid inlet / outlet openings (310) defining the 6 ways of the 6-way valve (300).
7. Thermal management system according to the preceding claim, in which the six heat transfer fluid inlet / outlet openings (310) are grouped into two groups, each group being dedicated to one of the loops (100, 200).
8. Thermal management system according to one of claims 6 and 7, in which the wheel (302) of the 6-way valve (300) comprises four chambers (312) arranged around the axis of rotation (X) of the 6-way valve (300), these chambers being separated two by two by a partition (314), and each being arranged to communicate with each other two inlet / outlet openings (310) for heat transfer fluid, depending on the angular position.
9. Thermal management system according to one of the preceding claims, in which the first branch (110, 210) of each loop communicates with an expansion tank (130, 230).
10. Thermal management system according to the preceding claim, in which the two expansion vessels (130, 230) are made on a body (350), in particular a single-piece body, in particular by two reservoirs formed on this body. [Claim 1 1] Thermal management system according to the preceding claim, in which the body (350) comprises a plate (351) forming a seat for a pump (141, 241), in particular a seat with a volute for the pump.
12. Thermal management system according to the preceding claim, in which the 6-way valve (300) is mounted on this plate (351).
13. Thermal management method, using a thermal management system (1) comprising: - a first heat transfer fluid circulation loop (100), configured to ensure thermal management of a first assembly which notably comprises an electric motor and / or power electronics associated with this electric motor, this first heat transfer fluid circulation loop comprising: o a first heat transfer fluid circulation branch (110) on which is placed a first cooling radiator, notably placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this first cooling radiator, o a second heat transfer fluid circulation branch (120) on which is placed a heat exchanger configured to allow the heat transfer fluid to exchange, within this heat exchanger, calories with another heat transfer fluid, notably a heat transfer fluid, for example a refrigerant fluid, of an air conditioning device of the vehicle, - a second heat transfer fluid circulation loop (200), configured to ensure thermal management of a second assembly which notably comprises a battery capable of electrically supplying the first assembly, this second heat transfer fluid circulation loop comprising: o a first branch (210) for circulating heat transfer fluid on which is placed a second cooling radiator, in particular placed on a front face of the vehicle, configured to allow cooling of the heat transfer fluid which passes through this second cooling radiator, o a second branch (220) for circulating heat transfer fluid on which is placed a heat exchanger configured to allow the heat transfer fluid to exchange, within this heat exchanger, calories with another heat transfer fluid, in particular a heat transfer fluid, for example a refrigerant fluid, of an air conditioning device of the vehicle, - a 6-way valve (300) fluidically connected to the first and second branches respectively of the first and second heat transfer fluid circulation loops, the thermal management method comprising the following step: - operate the 6-way valve (300) so that it is placed, selectively, in an angular position following one of the four possible combinations in which one of the two branches of one of the loops operates at the same time as one of the two branches of the other of the loops. |