Thermal management device for a modular platform of an electric vehicle chassis

Description

[0001] The present invention relates to the field of thermal management devices for electric vehicles and more particularly to thermal management devices for a modular platform of an electric motor vehicle chassis.

[0002] In the automotive field, and particularly in the field of electric motor vehicles, for reasons of standardization and economies of scale, modular chassis platforms for an electric motor vehicle may sometimes be used. Such modular platforms include, in particular, the batteries, the electric power train, and the chassis, including the wheels, the braking system, and the suspension of the motor vehicle. The term "electric power train" of the motor vehicle refers more specifically to the electric power system and the electric motor(s) of the motor vehicle. Such a modular platform is used to have a single platform, grouping together most of the propulsion, power supply, and electrical storage components, on which various passenger compartments and bodies are installed, corresponding to different models of motor vehicles.

[0003] However, in order to improve the range of the electric vehicle, a large part of the space within this modular platform is reserved for the batteries. This leaves little space to integrate a thermal management device allowing the thermal management of both the batteries and the passenger compartment. Conventional thermal management devices, such as the one known from document US 2020 / 353795 A1, are generally bulky and require a large amount of space to be integrated into a motor vehicle. These thermal management devices are not well suited for integration within such a modular platform.

[0004] 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 which can be integrated within such a modular platform.

[0005] The present invention, as defined in claim 1, therefore relates to a thermal management device for a modular platform of an electric motor vehicle chassis, said modular platform comprising the batteries as well as the electric power train of the electric motor vehicle, the thermal management device comprising: a first module comprising a first heat transfer fluid circuit within which a first heat transfer fluid is intended, said first heat transfer fluid circuit comprising a compressor, a first expansion device and a multi-fluid heat exchanger and a first heat exchanger, a cooling module being intended to be crossed by an external air flow, said cooling module comprising at least a first heat exchanger intended to be crossed by the external air flow, the cooling module comprising an upper side, a lower side, a first and a second lateral sides opposite each other, said sides forming an external wall of the cooling module, said cooling module being intended to be integrated within the modular platform,a second module comprising a first pump and a second pump of a second heat transfer fluid circuit within which a second heat transfer fluid is intended, said second module further comprising means for redirecting the second heat transfer fluid within said second heat transfer fluid circuit, at least part of the components of the first module are arranged on the external wall of the cooling module, and characterized in that at least part of the components of the second module are arranged on the external wall of the cooling module.

[0006] Advantageously, the components of the first module are grouped on the upper side of the cooling module.

[0007] Advantageously, the components of the second module are arranged on the same lateral side of the cooling module.

[0008] Advantageously, the components of the second module are distributed between the two lateral sides of the cooling module.

[0009] Advantageously, the compressor and the first heat exchanger of the first module are grouped on the same lateral side of the cooling module.

[0010] Advantageously, the first expansion device and the multi-fluid heat exchanger of the first module are arranged on the same lateral side as the compressor and the first heat exchanger.

[0011] Advantageously, the first expansion device and the multi-fluid heat exchanger are arranged on a lateral side opposite the lateral side comprising the compressor and the first heat exchanger.

[0012] Advantageously, the components of the second module are arranged on the upper side of the cooling module.

[0013] Advantageously, the components of the second module are arranged on a lateral side of the cooling module opposite the lateral side comprising the components of the first module.

[0014] Advantageously, the first expansion device and the multi-fluid heat exchanger are arranged in the extension of said cooling module, opposite one side of said cooling module opposite the first heat exchanger.

[0015] Advantageously, the components of the second module are distributed between: the lateral side of the cooling module opposite the lateral side comprising the compressor and the first heat exchanger, and / or in the extension of said cooling module, opposite a side of said cooling module opposite the first heat exchanger.

[0016] The present invention, as defined in claim 12, also relates to a modular platform of an electric motor vehicle chassis, said modular platform comprising the batteries as well as the electric power train of the electric motor vehicle, said modular platform comprising a thermal management device as described previously.

[0017] Other characteristics and advantages of the present invention will appear more clearly on reading the following description, provided for illustrative and non-limiting purposes, and the appended drawings in which: [ Fig 1 ] There figure 1 is a semi-transparent schematic representation of a modular platform according to a first embodiment, [ Fig 2 ] there figure 2 is a schematic perspective representation of a cooling module, [ Fig 3 ] there figure 3 is a schematic perspective representation of a heating, ventilation and air conditioning device, [ Fig 4 ] there figure 4 is a schematic representation of a thermal management device according to a first example, [ Fig 5 ] there figure 5 is a schematic representation of a thermal management device according to a second example, [ Fig 6 ] There figure 6 is a schematic representation of a thermal management device according to a third example, [ Fig 7 ] there figure 7 is a schematic perspective representation of a cooling module and the distribution of components according to a first variant of a first embodiment, [ Fig 8 ] there figure 8 is a schematic perspective representation of a cooling module and the distribution of components according to a second variant of the first embodiment, [ Fig 9 ] there figure 9 is a schematic perspective representation of a cooling module and the distribution of components according to a first variant of a second embodiment, [ Fig 10 ] there figure 10 is a schematic perspective representation of a cooling module and the distribution of components according to an alternative of the first variant of the second embodiment, [ Fig 11 ] there figure 11 is a schematic perspective representation of a cooling module and the distribution of components according to a second variant of the second embodiment, [ Fig 12 ] there figure 12 is a schematic representation in top view of a cooling module and the distribution of components according to a third variant of the second embodiment.

[0018] In the different figures, identical elements bear the same reference numbers.

[0019] The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Single features of different embodiments may also be combined and / or interchanged to provide other embodiments.

[0020] In this description, certain elements or parameters may be indexed, such as first element or second element, as well as first parameter and second parameter, or first criterion and second criterion, etc. In this case, 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 over another and such names can easily be interchanged without departing from the scope of this description. This indexing also does not imply an order in time, for example, to assess this or that criterion.

[0021] In this description, "placed upstream" means that one element is placed before another in relation to the direction of circulation of a fluid. Conversely, "placed downstream" means that one element is placed after another in relation to the direction of circulation of the fluid.

[0022] There figure 1 shows a modular platform A for the chassis of an electric motor vehicle. This modular platform A includes, in particular, the batteries B, the electric power train and the cycle part of the motor vehicle, for example the wheels, the braking and suspension system. By electric power train of the motor vehicle, we mean more precisely the electric power as well as the electric motor(s) of the motor vehicle. Such a modular platform A is used in particular to have a platform on which various passenger compartments and bodies can be installed.

[0023] In order to enable thermal management of batteries B as well as that of the passenger compartment, the modular platform A includes a thermal management device comprising at least two heat transfer fluid circuits X, Y (visible on the figures 4 , 5 And 7). The thermal management device more specifically comprises different modules fluidically connected to each other in order to form the different heat transfer fluid circuits X, Y.

[0024] The thermal management device thus comprises a first module M1 as well as a second module M2 which will be described in more detail later in this description.

[0025] The thermal management device also comprises a cooling module C intended to be crossed by an external air flow 500. The cooling module C comprises at least one heat exchanger 62, 42' also intended to be crossed by the external air flow 500. This cooling module C is intended to be integrated within the modular platform A, preferably in the front part of the modular platform.

[0026] An example of such a cooling module C is notably illustrated in figure 2 . The cooling module C can thus comprise a heat exchanger 62, 42' and a first collector housing C41 attached to said heat exchanger 62, 42'. The first collector housing C41 preferably forms a volute with a first open end C41a arranged opposite the heat exchanger 62, 42' (see figure 2 ) and a second open end C41b at the opposite end of the volute.

[0027] The cooling module C may also comprise at least one tangential fan, also called a tangential turbomachine C30, configured to generate the external air flow 500, for example when the motor vehicle is stopped or when it is at a low speed. The tangential turbomachine C30 comprises a rotor or turbine (or tangential propeller) C28. The turbine C28 has a substantially cylindrical shape. The turbine C28 advantageously comprises several stages of blades (or vanes). The turbine C28 is rotatably mounted around an axis of rotation Cy, for example parallel to the plane formed by the heat exchanger 62, 42' and extending across its width. The turbine C28 is more particularly arranged within the volute formed by the first collector housing. The tangential turbomachine C30 is thus compact.The use of such a C30 tangential turbomachine allows in particular that the external air flow 500 is equal over the entire width of the at least one heat exchanger 62, 42'. In addition, such a C30 tangential turbomachine allows space savings compared to conventional fans.

[0028] The C30 tangential turbomachine may also include a C31 motor configured to rotate the turbine. The C31 motor is, for example, suitable for driving the turbine in rotation at a speed between 200 rpm and 14,000 rpm. Such rotation speeds make it possible, in particular, to limit the noise generated by the C30 tangential turbomachine.

[0029] In the example shown in figure 2 , the tangential turbomachine C30 is configured to operate in suction mode, that is to say it sucks in ambient air so that it passes through the heat exchanger 62, 42 and is discharged through the second open end C41b of the volute. Alternatively, the tangential turbomachine C30 can operate in discharge mode, that is to say blowing air from the second open end C41b of the volute towards the heat exchanger 62, 42'.

[0030] The cooling module C may also comprise a second collector housing (not shown) attached to the heat exchanger 62, 42' on its face opposite that comprising the first collector housing C41. This second collector housing may comprise an opening in order to allow the external air flow 500 to pass. This opening may comprise a closure device (not shown) movable between a first so-called open position and a second so-called closure position. This closure device is in particular configured to allow the external air flow 500 to pass through said opening in its open position and to close said opening in its closure position. The closure device may be in different forms, such as for example in the form of a plurality of flaps pivotally mounted between an open position and a closed position.These shutters are preferably mounted parallel to the width of the cooling module C. However, it is quite possible to imagine other configurations such as shutters mounted parallel to the height of the cooling module. The shutters can be flag-type shutters but other types of shutters such as butterfly shutters are quite possible.

[0031] The cooling module C has an upper side C11, a lower side C12, a first C13a and a second C13b (visible on the figures 7 à 12 ) lateral side opposite each other. By upper side C11 is meant here the side of the cooling module C opposite the outlet C45. By lower side C12 is meant here the side of the cooling module C opposite the upper side C11 and facing the outlet C45. These different sides C11, C12, C13a, C13b form an external wall of the cooling module C.

[0032] The thermal management device also comprises a heating, ventilation and air conditioning device D intended to be crossed by an internal air flow 400 intended for a passenger compartment. Such a heating, ventilation and air conditioning device D is illustrated in figure 3 The heating, ventilation and air conditioning device D comprises in particular, within a housing, a cooler 66, 46, intended to cool the internal air flow 400, a second heat exchanger 65, intended to heat the internal air flow 400, and a ventilation means D1 configured to generate the internal air flow 400.

[0033] The heating, ventilation and air conditioning device D may in particular be arranged outside the modular platform A, for example within a passenger compartment installed on said modular platform A. In this case, the thermal management device comprises a connection interface I intended to allow the fluid connection of the heating, ventilation and air conditioning device D to heat transfer fluid circuits X, Y and to the elements of the thermal management device arranged within the modular platform A.

[0034] The thermal management device finally includes a BAT heat exchange interface with the B batteries. The BAT heat exchange interface is notably arranged within the modular platform A.

[0035] The various modules M1, M2, the cooling module C, the heating, ventilation and air conditioning device D and the heat exchange interface BAT with the batteries B are connected to each other so as to form heat transfer fluid circuits X, Y Z.

[0036] The use of a first module M1, a second module M2 as well as a cooling module C and a heating, ventilation and air conditioning device D makes it possible to have a compact thermal management device that can be easily integrated within the modular platform A. In addition, the integration of several components of the first heat transfer fluid circuit X within the first module M1, and the integration of other components of the second heat transfer fluid circuit Y within the second module M2, makes it easier to install the thermal management device within the modular platform. Indeed, these modules M1, M2 as well as the cooling module C can be installed and directly connected to each other to form at least part of the thermal management device.

[0037] THE figures 4 And 5show different examples of thermal management devices comprising three circulation circuits each connected to a multi-fluid heat exchanger 1, here tri-fluid. The thermal management device thus comprises a first heat transfer fluid circuit X within which a first heat transfer fluid is intended to circulate, a second heat transfer fluid circuit X within which a second heat transfer fluid is intended to circulate and a third heat transfer fluid circuit Z within which a third heat transfer fluid is intended to circulate.

[0038] The first module M1 more precisely includes the first heat transfer fluid circuit X and the components that compose it.

[0039] Within the first heat transfer fluid circuit X, a first heat transfer fluid is intended to circulate, in particular a refrigerant, for example CO2, R134a or R1234y. The first heat transfer fluid circuit X more particularly comprises a main loop X1 comprising, in the direction of circulation of the refrigerant, a compressor 41, a first heat exchanger 42, a first expansion device 43 and the three-fluid heat exchanger 1.

[0040] The first heat exchanger 42 of the first heat transfer fluid circuit X is more particularly a condenser configured to allow heat exchanges between the first heat transfer fluid of the first heat transfer fluid circuit X and the second heat transfer fluid of the second heat transfer fluid circuit Y.

[0041] Within the second heat transfer fluid circuit Y, a second heat transfer fluid, for example water or glycolated water, is intended to circulate. The second heat transfer fluid circuit Y comprises in particular a main loop Y1 comprising a first pump 61, a first heat exchanger 62. The three-fluid heat exchanger 1 is also connected to said main loop Y1 of the second heat transfer fluid circuit Y. This first pump 61 is in particular integrated into the second module M2.

[0042] The first heat exchanger 62 of the second heat transfer fluid circuit Y may be a radiator intended to be crossed by an external air flow 500. The first heat exchanger 62 is then integrated within the cooling module C.

[0043] The second heat transfer fluid circuit Y comprises a first branch branch Y2 connected to the main loop Y1 in parallel with the first heat exchanger 62 of said second heat transfer fluid circuit Y. More particularly, the first branch branch Y2 connects a first connection point 81 to a second connection point 82. The first connection point 81 is arranged on the main loop Y1 downstream of the first heat exchanger 62, between said first heat exchanger 62 and the first pump 61. The second connection point 82 is arranged on the main loop Y1 upstream of the first heat exchanger 62, between the three-fluid heat exchanger 1 and said first heat exchanger 62. Said first branch branch Y2 may in particular comprise a second pump 63 as well as the first heat exchanger 42 of the first heat transfer fluid circuit X.This second pump 63 is more particularly integrated into the second module M2.

[0044] The first branch branch Y2 may also comprise an electric heater 64 of the second heat transfer fluid arranged downstream of the first heat exchanger 42 of the first heat transfer fluid circuit X. This electric heater 64 may be integrated within the first module M1.

[0045] Still according to the architectures illustrated in figures 4 And 5, the second heat transfer fluid circuit Y comprises a second branch branch Y3 connected to the first branch branch Y2 in parallel with the first heat exchanger 42 of the first heat transfer fluid circuit X and the second pump 63. More particularly, this second branch branch Y3 connects a third connection point 83 to a fourth connection point 84. The third connection point 83 is arranged on the first branch branch Y2 downstream of the first heat exchanger 42 of the first heat transfer fluid circuit X and the second pump 63, upstream of the second connection point 82. The fourth connection point 84 is arranged on the first branch branch Y2 upstream of the first heat exchanger 42 of the first heat transfer fluid circuit X and the second pump 63, downstream of the first connection point 81.The second branch branch Y3 comprises a second heat exchanger 65 of the second heat transfer fluid circuit Y. This second heat exchanger 65 is more particularly integrated within the heating, ventilation and air conditioning device D.

[0046] In order to control the flow of the second heat transfer fluid, the second heat transfer fluid circuit Y includes redirection means such as three-way valves arranged for example: on the second connection point 82 so as to redirect the second heat transfer fluid from the three-fluid heat exchanger 1 to the first heat exchanger 62 or the second heat exchanger 62 or so as to redirect the second heat transfer fluid from the third connection point 83 to the first heat exchanger 62, on the third connection point 83 so as to redirect the second heat transfer fluid from the second connection point 82 to the second heat exchanger 65 or so as to redirect the second heat transfer fluid from the first heat exchanger 42 of the first heat transfer fluid circuit X to the second connection point 82 or to the second heat exchanger 65,on the third connection point 83 so as to redirect the second heat transfer fluid from the first heat exchanger 62 or the second heat transfer fluid from the second heat exchanger 65 to the first heat exchanger 42 of the first heat transfer fluid circuit X.,

[0047] Other means of redirection such as shut-off valves may also be considered.

[0048] These means of redirecting the second heat transfer fluid are part of the second M2 module.

[0049] In the architectures of the figures 4 And 5, the heat exchange interface BAT with the batteries B is arranged within the third heat transfer fluid circuit Z in which a third heat transfer fluid, in particular a dielectric fluid, is intended to circulate. This third heat transfer fluid circuit Z is connected to the tri-fluid heat exchanger 1 and the heat exchange interface BAT is a container in which the batteries are at least partially immersed and / or are subjected to vaporization of the dielectric fluid.

[0050] The third heat transfer fluid circuit Z may also include a pump (not shown) to circulate the dielectric fluid within the heat exchange interface BAT and the circuit itself. This pump may in particular be integrated directly into the heat exchange interface BAT to save space.

[0051] The three-fluid heat exchanger 1 is more particularly configured to allow heat exchanges between the second and third heat transfer fluids and the first heat transfer fluid. The use of such a three-fluid heat exchanger 1 allows, within the same heat exchanger, heat exchanges both between the first heat transfer fluid and the second heat transfer fluid and between the first heat transfer fluid and the third heat transfer fluid. Thus, it is possible with a single heat exchanger to thermally couple three separate circulation circuits with three heat transfer fluids of different nature.Grouping these heat exchanges within a single tri-fluid heat exchanger 1 also allows space to be saved within the motor vehicle compared to a thermal management device with three circulation circuits with a first heat exchanger dedicated to heat exchanges between the first heat transfer fluid and the second heat transfer fluid and a second heat exchanger dedicated to heat exchanges between the first heat transfer fluid and the third heat transfer fluid.

[0052] According to the architecture illustrated in the figure 4 , the second heat transfer fluid circuit Y may further comprise a third bypass branch Y4 connected to the main loop Y1 in parallel with the first pump 61 and the three-fluid heat exchanger 1. More particularly, this third bypass branch Y4 connects a fifth connection point 85 to a sixth connection point 86. The fifth connection point 85 is arranged on the main loop Y1 downstream of the three-fluid heat exchanger 1 and the first pump 61 and upstream of the second connection point 82. The sixth connection point 86 is arranged on the main loop Y1 upstream of the three-fluid heat exchanger 1 and the first pump 61 and downstream of the first connection point 81. The third bypass branch Y4 comprises a cooler 66 intended to be crossed by the internal air flow 400 to the passenger compartment.This cooler 66 is in particular integrated within a heating, ventilation and air conditioning device D, preferably upstream of the second heat exchanger 65 in the direction of circulation of the internal air flow.

[0053] In order to control the second heat transfer fluid, the second heat transfer fluid circuit Y comprises redirection means such as, for example, three-way valves arranged respectively: on the sixth connection point 86 to redirect the second heat transfer fluid from the first heat exchanger 62 or from the cooler 66 to the three-fluid heat exchanger 1, on the fifth connection point 85 to redirect the second heat transfer fluid from the three-fluid heat exchanger 1 to the cooler 66 or to the second connection point 82.

[0054] Other means of redirection such as shut-off valves may also be considered.

[0055] Likewise, these means of redirecting the second heat transfer fluid are part of the second module M2.

[0056] According to this first variant, the first heat transfer fluid circuit X may also comprise a desiccant bottle 44 arranged downstream of the first heat exchanger 42. This desiccant bottle 44 may in particular be attached to the first heat transfer fluid outlet of the first heat exchanger 42. This desiccant bottle 44 is thus integrated into the first module M1.

[0057] According to another architecture illustrated in the figure 5 , the second heat transfer fluid circuit Y does not include a third bypass branch Y4 with a cooler 66. In this architecture of the figure 5 , the first heat transfer fluid circuit X comprises a first bypass branch X2 connected to the main loop X1 in parallel with the first expansion device 43 and the three-fluid heat exchanger 1. This first bypass branch X1 of the first heat transfer fluid circuit X, more particularly connects a first connection point 91 to a second connection point 92. The first connection point 91 is arranged on the main loop X1 upstream of the first expansion device 43, between the first heat exchanger 42 of the first heat transfer fluid circuit X and said first expansion device 43. The second connection point 92 is arranged on the main loop X1 downstream of the three-fluid heat exchanger 1, between said three-fluid heat exchanger 1 and the compressor 41.This first branch branch X2 comprises a second expansion device 45 and an evaporator 46 intended to be crossed by an internal air flow 400 intended for the passenger compartment. This evaporator 46 as well as the second expansion device 45 are integrated within a heating, ventilation and air conditioning device D. Preferably, the evaporator 46 is arranged upstream of the second heat exchanger 65 in the direction of circulation of the internal air flow 400.

[0058] In order to control the first heat transfer fluid and allow or not allow it to pass through the first bypass branch X2, the first 43 and second 45 expansion devices can be electronic expansion valves having a shut-off function. Other redirection means such as shut-off valves or three-way valves can also be envisaged.

[0059] According to this second variant, the first heat transfer fluid circuit X may also include an accumulator 44' arranged upstream of the compressor 41. This accumulator 44' may in particular be arranged more specifically downstream of the second connection point 92. This accumulator 44' is thus integrated into the first module M1.

[0060] The thermal management device may also comprise an electric radiator 67 arranged in the internal air flow 400 to the passenger compartment to assist in heating it. This electric radiator 67 may be integrated within the heating, ventilation and air conditioning device D, preferably furthest downstream in the direction of circulation of the internal air flow relative to the other heat exchangers of said heating, ventilation and air conditioning device D.

[0061] There figure 6 shows another embodiment in which the heat exchange interface BAT is for example a cold plate connected to the second heat transfer fluid circuit X. More precisely, the heat exchange interface BAT is arranged within a fourth branch branch Y5 of the second heat transfer fluid circuit Y connected in parallel with the first heat exchanger 62 of the second heat transfer fluid circuit Y. The multi-fluid heat exchanger 1 is therefore no longer tri-fluid but simply bi-fluid.

[0062] In the example of the figure 6 , which is a variant of the figure 4 , the fourth branch branch Y5 connects a seventh connection point 87 to an eighth connection point 88. The seventh connection point 87 is arranged downstream of the multi-fluid heat exchanger 1, here merged with the fifth connection point 85. The eighth connection point 88 is arranged downstream of the first heat exchanger 62, here on the third branch branch Y4, downstream of the cooler 66. The flow of second heat transfer fluid is redirected or not to the fourth branch branch Y5 by a redirection means, here a four-way valve arranged on the fifth 85 and seventh 87 connection points. Other redirection means can be used, such as for example a set of shut-off valves. Likewise, this means of redirecting the second heat transfer fluid can advantageously be part of the second module M2.

[0063] In order to limit the size of the thermal management device, at least part of the components of the first module M1 and of the second module M2 are arranged on the external wall of the cooling module C, as illustrated in the figures 7 à 12 .

[0064] According to a first embodiment illustrated in figures 7 et 8 , the components of the first module M1 are grouped on the upper side C11 of the cooling module C. Placing these components, i.e. the compressor 41, the first expansion device 43, the multi-fluid heat exchanger 1 and the first heat exchanger 42, on this upper side, firstly allows for minimum bulk but also allows for protecting these components from possible projectiles or impacts that may come from the underbody of the motor vehicle.

[0065] According to a first variant of this first embodiment illustrated in the figure 7 , the components of the second module M2 can be arranged on the same lateral side C13a, C13b of the cooling module C. The first pump 61, the second pump 63 as well as the different valves of the means for redirecting the second heat transfer fluid are thus all grouped on the same lateral side C13a, C13b.

[0066] According to a first variant of this first embodiment illustrated in the figure 8 , the components of the second module M2 are distributed between the two lateral sides C13a, C13b of the cooling module C. For example, the first 61 and the second 62 pumps can be arranged on the first lateral side C13a with in particular the redirection means of the fourth 84 and sixth 86 connection points. The redirection means of the second 82, third 83, fifth 85 and possibly seventh 87 connection points can be arranged on the second lateral side C13b.

[0067] THE figures 9 à 12 show a second embodiment in which the compressor 41 and the first heat exchanger 42 of the first module M1 are grouped on the same lateral side C13a, C13b of the cooling module C.

[0068] According to a first variant of this second embodiment illustrated in figures 9 And 10 , the first expansion device 43 and the multi-fluid heat exchanger 1 are arranged on the same lateral side C13a, C13b as the compressor 41 and the first heat exchanger 42. In the example illustrated in figure 9 , the components of the second module M2 are arranged on the upper side C11 of the cooling module C. In the example shown in figure 10 , the components of the second module M2 are arranged on a lateral side C13a, C13b of the cooling module C opposite the lateral side C13a, C13b comprising the compressor 41 and the first heat exchanger 42.

[0069] According to a second variant of the second embodiment illustrated in figure 11 , the first expansion device 43 and the multi-fluid heat exchanger 1 are arranged on a lateral side C13a, C13b opposite the lateral side C13a, C13b comprising the compressor 41 and the first heat exchanger 42. The first module M1 is thus distributed over the two lateral sides C13a, C13b of the cooling module C. According to this second variant, the components of the second module M2 are arranged on the upper side C11 of the cooling module C.

[0070] There figure 12shows a third variant of the second embodiment in which the first expansion device 43 and the multi-fluid heat exchanger 1 are arranged in the extension of said cooling module C, opposite one side of said cooling module C opposite the first heat exchanger 62. This makes it possible in particular to limit the increase in the width of the thermal management device by limiting the number of components arranged on the lateral sides C13a, C13b of the cooling module C. According to this third variant, the components of the second module M2 can also be distributed between: a lateral side C13a, C13b of the cooling module C opposite the lateral side C13a, C13b comprising the compressor 41 and the first heat exchanger 42, and / or the rear of the cooling module C in the extension of said cooling module C.

[0071] For example, the first 61 and the second 62 pumps as well as the redirection means of the fourth 84 and sixth 86 connection points can be arranged on a lateral side C13a, C13b of the cooling module C opposite the lateral side C13a, C13b comprising the compressor 41 and the first heat exchanger 42. The redirection means of the second 82, third 83, fifth 85 and possibly seventh 87 connection points can be arranged in the extension of said cooling module C, opposite a side of said cooling module C opposite the first heat exchanger 62.

[0072] Preferably, in this third variant, the components of the first M1 and of the second M2 module are arranged opposite the side of the cooling module C opposite the first heat exchanger 62 so as not to hinder the evacuation of the external air flow 500. For this, these components are preferably offset relative to the outlet C31 of the cooling module C.

[0073] Thus, we can clearly see that the placement of the components of the first module M1 and the second module M2 on the periphery of the cooling module C, makes it possible to limit the size of the thermal management device and facilitates its integration within a modular platform A.

Claims

1. A thermal management device for a modular platform (A) of an electric motor vehicle chassis, said modular platform (A) comprising the batteries (B) and the electric powertrain of the electric motor vehicle, the thermal management device comprising: - a first module (M1) comprising a first heat transfer fluid circuit (X) in which a first heat transfer fluid is intended, said first heat transfer fluid circuit (X) comprising a compressor (41), a first expansion device (43) and a multi-fluid heat exchanger (1) and a first heat exchanger (42), - a cooling module (C) being intended to have an external air flow (500) passing through it, said cooling module (C) comprising at least a first heat exchanger (62) intended to have the external air flow (500) passing through it, the cooling module (C) comprising an upper side (C11), a lower side (C12), a first (C13a) and a second (C13b) lateral sides opposite one another, said sides (C11, C12, C13a, C13b) forming an outer wall of the cooling module (C), said cooling module (C) being intended to be integrated within the modular platform (A), - a second module (M2) comprising a first pump (61) and a second pump (63) of a second heat transfer fluid circuit (Y) in which a second heat transfer fluid is intended, said second module (M2) further comprising means for redirecting the second heat transfer fluid within said second heat transfer fluid circuit (Y), at least some of the components of the first module (M1) being arranged on the outer wall of the cooling module (C). characterized in that at least some of the components of the second module (M2) are arranged on the outer wall of the cooling module (C).

2. The thermal management device as claimed in claim 1, characterized in that the components of the first module (M1) are grouped together on the upper side (C11) of the cooling module (C).

3. The thermal management device as claimed in claim 2, characterized in that the components of the second module (M2) are arranged on the same lateral side (C13a, C13b) of the cooling module (C).

4. The thermal management device as claimed in claim 2, characterized in that the components of the second module (M2) are distributed between the two lateral sides (C13a, C13b) of the cooling module (C).

5. The thermal management device as claimed in claim 1, characterized in that the compressor (41) and the first heat exchanger (42) of the first module (M1) are grouped together on the same lateral side (C13a, C13b) of the cooling module (C).

6. The thermal management device as claimed in claim 5, characterized in that the first expansion device (43) and the multi-fluid heat exchanger (1) of the first module (M1) are arranged on the same lateral side (C13a, C13b) as the compressor (41) and the first heat exchanger (42) of the first module (M1).

7. The thermal management device as claimed in claim 5, characterized in that the first expansion device (43) and the multi-fluid heat exchanger (1) are arranged on a lateral side (C13a, C13b) opposite the lateral side (C13a, C13b) comprising the compressor (41) and the first heat exchanger (42) of the first module (M1).

8. The thermal management device as claimed in either of claims 6 and 7, characterized in that the components of the second module (M2) are arranged on the upper side (C11) of the cooling module (C).

9. The thermal management device as claimed in claim 6, characterized in that the components of the second module (M2) are arranged on a lateral side (C13a, C13b) of the cooling module (C) opposite the lateral side (C13a, C13b) comprising the components of the first module (M1).

10. The thermal management device as claimed in claim 5, characterized in that the first expansion device (43) and the multi-fluid heat exchanger (1) are arranged in the extension of said cooling module (C), facing a side of said cooling module (C) opposite the first heat exchanger (62) of said cooling module (C).

11. The thermal management device as claimed in claim 10, characterized in that the components of the second module (M2) are distributed between: - the lateral side (C13a, C13b) of the cooling module (C) opposite the lateral side (C13a, C13b) comprising the compressor (41) and the first heat exchanger (42) of the first module (M1), and / or - in the extension of said cooling module (C), facing a side of said cooling module (C) opposite the first heat exchanger (62) of said cooling module (C).

12. A modular platform (A) of an electric motor vehicle chassis, said modular platform (A) comprising the batteries (B) and the electric powertrain of the electric motor vehicle, characterized in that said modular platform (A) comprises a thermal management device as claimed in any one of claims 1 to 11.