Vehicle heat treatment module comprising a distribution plate

Abstract

The invention relates to a heat treatment module (1) for a vehicle, in particular for an electric vehicle, said module comprising: • a distribution plate (20), said distribution plate (20) comprising a first face (21) and a second face (22), said distribution plate (20) forming, at least partially, a wall (31) of a bottle (30), in particular an accumulator or a desiccant bottle, said distribution plate (20) comprising first integrated ducts (40) configured to be placed in fluidic communication with said bottle (30), • a first heat exchanger (50), attached to the first face (21), • a second heat exchanger (60), attached to the second face (22).

Description

Vehicle heat treatment module with a distribution plate

[0001] The invention relates to the technical field of vehicles, preferably motor vehicles. More particularly, the invention relates to the field of heat pumps for motor vehicles adapted for heating, ventilation and air conditioning systems (abbreviated as HVAC in English).

[0002] Currently, most motor vehicles include an air conditioning system, a ventilation system, and a heating system whose functions are complementary and are preferably managed by a heat pump. However, in motor vehicles, traditional heating and air conditioning systems occupy a significant amount of space in the engine compartment, limiting the design and configuration options for other essential components.

[0003] A vehicle's heat pump can therefore provide both heating and cooling for one or more compartments of the vehicle, as needed. The pump typically includes at least one compressor and a heat treatment module consisting of one or more heat exchangers. The large number of components in the pump results in a significant size.

[0004] The published patent document FR 3 126 647 A1 discloses a heat treatment module for a motor vehicle featuring a more compact design, and more specifically, a more compact design of the heat exchangers and an internal heat exchanger forming said module. An expansion valve is also coupled to the heat treatment module. A space is specifically dedicated within the module to group the various fluid connectors linking the different components of the pump and the expansion valve. However, in this configuration, these connectors still occupy a considerable amount of space.

[0005] The invention aims to overcome at least one of the drawbacks of the aforementioned prior art. More specifically, the invention aims to reduce the space occupied by the fluidic connectors, thereby reducing the size of the heat pump.

[0006] The invention also aims to reduce the size of the heat treatment module and to improve the robustness of the desiccant bottle integrated into the heat pump.

[0007] The invention also aims to facilitate the manufacture of a heat treatment module according to the invention. Summary

[0008] To this end, the present invention proposes a heat treatment module for vehicles, in particular for electric vehicles, said module comprising: - a distribution plate including a first face and a second face, said distribution plate forming, at least partially, a wall of a bottle, in particular an accumulator or a desiccant bottle, said distribution plate including first integrated conduits configured to be put into fluidic communication with said bottle, - a first heat exchanger, attached to the first face, said module being characterized in that it includes a second heat exchanger, attached to the second face.

[0009] In a heat pump, the heat transfer module facilitates heat exchange between two different temperature levels of a refrigerant. This refrigerant is, for example, of the type R134a, R1234yf, R744, or R290.

[0010] This module also facilitates heat exchange between the refrigerant and one or more heat transfer fluids circulating within its various components. This heat exchange allows the module to regulate the temperature of vehicle compartments, such as the engine compartment or passenger compartment.

[0011] The heat transfer fluid can be, for example, water, a mixture of water and ethylene glycol, or a dielectric fluid.

[0012] According to one embodiment of the invention, at least one of the first and second heat exchangers is fluidly connected to a first circuit and a second circuit.

[0013] According to one embodiment of the invention, the first circuit is a heat transfer fluid circuit and the second circuit is a refrigerant fluid circuit.

[0014] According to the invention, the distribution plate forms, at least partially, the bottle, while serving as a support, on both sides, for the first and second heat exchangers.

[0015] The bottle can be either a storage or a desiccant bottle. Preferably, the bottle is a desiccant bottle. The phrase "configured to form, at least partially, a wall of the bottle" means that part of the dispensing plate can form all or part of the wall and adapt to any shape or size of the bottle, whether it is a storage or a desiccant bottle.

[0016] More specifically, the desiccant bottle in a heat pump serves primarily to remove moisture and impurities from the refrigerant. This reduces the damage caused by the refrigerant to the secondary circuit, decreasing the risk of corrosion and preventing alterations to the refrigerant's properties. The desiccant bottle also ensures the refrigerant circulates in a liquid state within the unit. Finally, this bottle also acts as a refrigerant reservoir to guarantee the proper functioning of the fluid circuit, which depends on the pump's operating conditions and the presence or absence of micro-leaks in the fluid circuit.

[0017] A desiccant bottle is generally placed in the high-pressure part of a refrigerant circuit, particularly downstream of an air-cooled or water-cooled condenser.

[0018] The accumulator, or heat accumulator, serves as a storage tank for the refrigerant. It also acts as a desiccant by trapping moisture and impurities from the refrigerant flowing through it.

[0019] An accumulator is generally located in the low-pressure part of a refrigerant circuit, particularly upstream of a compressor.

[0020] In one particular embodiment, the first heat exchanger is a plate water evaporator, or "chiller." It is configured to extract heat from the heat transfer fluid and transfer it to the low-pressure refrigerant, which then evaporates. It can be used, in particular, to cool the batteries of an electric vehicle.

[0021] In one particular embodiment, the second heat exchanger is an internal plate heat exchanger, or IHX for "Internal Heat Exchanger". The internal heat exchanger is configured to perform heat exchange between low-pressure refrigerant and high-pressure refrigerant.

[0022] Other advantageous features of the module that is the subject of the invention are listed below. Each of these features may be considered alone or in combination with the notable features defined above. Each of these features contributes, where applicable, to solving specific technical problems defined further in the description and in which the notable features defined above do not necessarily participate. The latter may, where applicable, be the subject of one or more divisional patent applications.

[0023] According to one embodiment of the invention, the distribution plate comprises a first sub-plate, forming the first face of said distribution plate, and a second sub-plate, forming the second face of said distribution plate.

[0024] According to one embodiment of the invention, one of the first sub-plate and the second sub-plate is configured to form, at least partially, the wall of the bottle.

[0025] According to one embodiment of the invention, said first and second sub-plates are assembled together to form, at least partially, the wall of the bottle.

[0026] According to one embodiment of the invention, the first and second sub-plates comprise, respectively, first and second parts configured to form, at least partially, the wall of the bottle.

[0027] In this way, the bottle is directly formed by the sub-plates, which simplifies manufacturing, as the bottle does not need to be attached to the distribution plate.

[0028] According to one embodiment of the invention, the parts of the first and second sub-plates configured to form, at least partially, the wall of the bottle, are fixed together at a connection oriented parallel to a longitudinal axis of the bottle.

[0029] The joint allows the two sub-plates to be joined together to form the distribution plate. This joint also secures and seals the two sub-plates, facilitating the positioning and sealing of connectors and simplifying assembly. The joint's orientation, parallel to the longitudinal axis of the cylinder, minimizes the overall size of the module and cylinder, while also providing structural reinforcement. The joint is secured using methods known to those skilled in the art, such as welding, brazing, or bolting.

[0030] According to one embodiment of the invention, the parts of the sub-plates are fixed together by a junction positioned at a distance from the connection and oriented parallel to the longitudinal axis of the bottle.

[0031] This joint thus forms a second connection between the subplates. The joint is preferably made using methods known to those skilled in the art, such as brazing or welding. This second connection between the subplates improves the reliability and lifespan of the heat treatment module. The distance between the connection and the joint can vary depending, for example, on the manufacturing constraints of the subplates. For instance, the joint is located on the side of the bottle opposite the connection, allowing for the production of subplates of similar sizes, thus simplifying their manufacture.

[0032] According to one embodiment of the invention, the parts of the first and second sub-plates are fixed together by the link and by the junction, the wall of the bottle also being closed by at least a first end portion, or first stopper, at a first longitudinal end of the bottle.

[0033] Advantageously, the bottle wall comprises the first and second sub-plates and the end portion, which are joined together. This variant is particularly preferred because it simplifies the design and assembly of the heat pump's thermal processing module, while also reducing its mass. The first end portion and the sub-plates are joined using methods known to those skilled in the art, such as brazing or welding.

[0034] According to one embodiment of the invention, the first end portion is screwed to the parts of the first and second sub-plates to form the bottle.

[0035] According to one embodiment of the invention, the distribution plate includes a through hole, preferably said through hole being elongated in shape, at the longitudinal end of the bottle opposite the first end portion.

[0036] According to one embodiment of the invention, said through hole is configured to allow the insertion of a second end portion, or second plug.

[0037] Advantageously, the first and second stoppers allow the ends of the bottle to be sealed.

[0038] According to one embodiment of the invention, the first and second end portions are circular in shape.

[0039] According to some embodiments of the invention, at least the second portion or second plug is inserted through the hole passing perpendicularly through the plate.

[0040] Thus, according to certain embodiments, the parts of the first and second subplates are fixed together by the bond and by the junction, the wall of the bottle also being closed, at a first longitudinal end of the bottle, by a first end portion, or first stopper, and at a second longitudinal end of the bottle, by a second end portion, or second stopper.

[0041] In some embodiments, the distribution plate including the through hole is stamped.

[0042] In some embodiments, the distribution plate including the through hole is stamped.

[0043] In some embodiments, the through hole is formed in the distribution plate before the distribution plate is stamped.

[0044] process revision

[0045] Indeed, the through hole simplifies the manufacturing process, particularly the stamping, by offering the distribution plate an additional degree of freedom during production. The bottle is thus formed from the first and second sub-plates, in the form of two shells, each essentially a half-cylinder. The first and second end portions allow the bottle to be closed at each of its longitudinal ends.

[0046] Advantageously, at least the second end portion and the sub-plates are fixed together using methods known to those skilled in the art, such as brazing or welding. According to one embodiment of the invention, the first end portion, the second end portion, and the sub-plates are fixed together using methods known to those skilled in the art, such as brazing or welding.

[0047] Alternatively, the first end portion and / or the second end portion are screwed to the parts of the first and second sub-plates to form the bottle.

[0048] According to one embodiment of the invention, the first heat exchanger is attached to the first sub-plate, the second heat exchanger being attached to the second sub-plate.

[0049] In this way, the manufacture of the module is facilitated, being limited to the manufacture and assembly of the first and second heat exchangers and two subplates.

[0050] According to one embodiment of the invention, the distribution plate includes at least one orifice, in particular a plurality of orifices, configured to put the first heat exchanger in fluidic relation with the second heat exchanger.

[0051] Therefore, the module does not require specific pipes to ensure fluid circulation between the first and second heat exchangers. Fluid communication between the first and second heat exchangers is achieved directly via the distribution plate, specifically through the faces of the first and second heat exchangers in contact with the distribution plate.

[0052] According to one embodiment of the invention, the first integrated conduits are configured to be fluidly connected to the second circuit.

[0053] According to one embodiment of the invention, the first integrated conduits are fluidly connected to the bottle.

[0054] According to one embodiment of the invention, channels are formed in the first sub-plate and / or in the second sub-plate, the assembly of the first and second sub-plates closing said channels to form the first integrated conduits.

[0055] Creating shaped channels in the distribution plate simplifies the assembly of the module, bottle and distribution plate, reducing the number of connectors and pipes to be manufactured and installed in the pump.

[0056] Preferably, the channels are formed in both the first subplate and the second subplate.

[0057] Alternatively, the channels are stamped into the first sub-plate, with the second sub-plate closing off these channels to form the first integrated conduits. Alternatively, the channels can also be stamped into the second sub-plate or into the distribution plate when a single plate is used to form the bottle wall.

[0058] Stamping is a technique familiar to those skilled in the art and easy to implement, which simplifies the manufacturing of plates, sub-plates, and channels. Sealing can be achieved using methods familiar to those skilled in the art, such as welding, brazing, or bolting, ensuring proper fluid circulation between the cylinder and the secondary refrigerant circuit.

[0059] According to one embodiment of the invention, at least one of the integrated conduits connects the bottle and / or the first heat exchanger to the second heat exchanger via fluid flow.

[0060] According to one embodiment of the invention, at least one of the integrated conduits extends between two orifices, so as to connect the first heat exchanger with the second heat exchanger via fluidic means.

[0061] According to one embodiment of the invention, the distribution plate is configured to thermally insulate, at least partially, the first heat exchanger from the second heat exchanger.

[0062] In this way, the first and second heat exchangers are thermally decoupled.

[0063] According to one embodiment of the invention, the distribution plate includes a first insulating interface, in particular in the form of a layer of insulating material, said insulating interface being inserted between the first and second heat exchangers, in particular between the first and second sub-plates.

[0064] In this way, the insulating interface, in particular the insulating material, allows the first and second heat exchangers to be thermally decoupled.

[0065] According to one embodiment of the invention, the insulating interface is for example made of polystyrene or polyurethane or wood fiber.

[0066] According to another embodiment of the invention, the distribution plate includes at least a first opening configured to thermally insulate, at least partially, the first heat exchanger from the second heat exchanger.

[0067] In particular, each of the first and second sub-plates includes at least one opening configured to thermally insulate, at least partially, the first heat exchanger from the second heat exchanger. These openings overlap at least partially.

[0068] In this way, a layer of gas, in particular air, or vacuum, extending between the first and second heat exchangers, constitutes the insulating interface and thermally decouples the first and second heat exchangers.

[0069] According to one embodiment of the invention, the module includes a third heat exchanger, at least partially attached to the first or second face, said third heat exchanger being in particular directly fluidly connected to the first integrated conduits.

[0070] In one particular embodiment, the third heat exchanger is a plate water condenser, or "Water Cooled Condenser". It is configured to transfer heat from the high-pressure refrigerant, which undergoes condensation, to the heat transfer fluid.

[0071] The condenser is thus directly connected to the bottle, which eliminates the need for connecting pipes.

[0072] According to one embodiment of the invention, the third heat exchanger is attached to the first sub-plate or to the second sub-plate.

[0073] According to one embodiment of the invention, the distribution plate comprises a first portion and a second portion, the second portion being, for example, arranged in line with the first portion.

[0074] According to one embodiment of the invention, the first heat exchanger and the second heat exchanger are attached to the first portion, said first portion being at least partially intercalated between the first heat exchanger and the second heat exchanger, the third heat exchanger being attached to the second portion.

[0075] According to an embodiment, in which the distribution plate comprises a first sub-plate, forming the first face of said distribution plate, and a second sub-plate, forming the second face of said distribution plate: - the first portion is formed by a first segment of the first and second sub-plates, - the second portion is formed by a second segment of the first and second sub-plates.

[0076] Thus, the distribution plate, formed by the first and second sub-plates, extends from the first portion to the second portion.

[0077] In this way, heat exchange between the first and second heat exchangers on the one hand and the third heat exchanger on the other hand is limited.

[0078] According to one embodiment of the invention, the first portion of the distribution plate extends along a first plane, the second portion extends along a second plane, in particular different from the first plane, in particular parallel to the first plane.

[0079] According to a particular embodiment, the first plane is perpendicular to the second plane.

[0080] In this way, the height of the module, that is to say the dimension of the module in a first direction, perpendicular to one of the first and / or second planes, is improved, in particular in the case where the height of the third heat exchanger, measured along the first direction, is greater than the height of the first heat exchanger, measured along the first direction, and / or the height of the second heat exchanger, measured along the first direction.

[0081] In this way, with the first and second heat exchangers attached on either side of the first portion and the third heat exchanger attached to the second portion, offset from the first portion along the first direction, the height of the module corresponds to the minimum of: - the height of the stack of the first heat exchanger, the distribution plate and the second heat exchanger, - the height of the stack of the third heat exchanger and the distribution plate.

[0082] According to one embodiment of the invention, the distribution plate comprises a third portion, said third portion extending at least partially along a third plane, in particular different from the first and second planes, in particular intersecting the first and second planes.

[0083] According to one embodiment of the invention, the third portion comprises the wall of the bottle.

[0084] According to one embodiment of the invention, a first angle formed between, on the one hand, the first plane and / or the second plane, and, on the other hand, the third plane, said first angle is between 15° and 85°, preferably between 30° and 60°.

[0085] According to one embodiment of the invention, the distribution plate comprises at least one angled section, ensuring the connection between the third portion and one of the first and second portions.

[0086] In this way, the bottle can be tilted at a given angle so as to limit the volume occupied by the module.

[0087] According to one embodiment of the invention, the first portion and the second portion of the distribution plate are separated by at least one cutout in said distribution plate.

[0088] This cut allows for thermal decoupling between the first and second portions.

[0089] According to one embodiment of the invention, the distribution plate comprises two angled sections, the first angled section providing the connection between the third portion and the first portion, the second angled section providing the connection between the third portion and the second portion.

[0090] According to one embodiment of the invention, the first portion and the second portion of the distribution plate extend on either side of the wall of the bottle.

[0091] In this way, the bottle and / or the cutouts form a thermal barrier between the first portion and the second portion.

[0092] According to one embodiment of the invention, the second portion of the distribution plate includes a second opening, in particular opposite the third heat exchanger.

[0093] This opening helps to limit the weight of material of the distribution plate, and to limit the conduction between the distribution plate and said third heat exchanger.

[0094] According to one embodiment of the invention, the module comprises a plurality of first connectors forming inlets and outlets of heat transfer fluid, said first connectors being fluidically connected to the first heat transfer fluid circuit, said first connectors being attached to the first face of the distribution plate and / or to the first heat exchanger.

[0095] In this way, all the connectors associated with the first heat transfer fluid circuit are gathered on one side of the distribution plate, which facilitates the connection of the module to said first circuit.

[0096] According to a particular embodiment, in which the third heat exchanger is attached to the first face, in particular to the first sub-plate, at least one of the first connectors, in particular two of the first connectors, are attached to said third heat exchanger.

[0097] According to one embodiment of the invention, at least one of the first connectors, in particular the first two connectors, are attached to the second portion of the distribution plate, in particular to the first face of the distribution plate.

[0098] According to one embodiment of the invention, at least one of the first connectors, in particular the first two connectors, are attached to the first sub-plate or to the second sub-plate.

[0099] According to one embodiment of the invention, the module comprises a plurality of second connectors forming refrigerant fluid inlets and outlets, said second connectors being fluidly connected to the second refrigerant fluid circuit, said second connectors being attached to the second face of the distribution plate and / or to the second heat exchanger.

[0100] According to a particular embodiment, at least one of the second connectors, in particular two second connectors, are attached to said third heat exchanger.

[0101] According to one embodiment of the invention, at least one of the second connectors, in particular two second connectors, are attached to the first sub-plate or to the second sub-plate.

[0102] According to one embodiment of the invention, the module includes one or more third fluidic connectors adapted to each receive a fluid expansion device.

[0103] According to a particular embodiment, said third fluidic connectors are attached to the second heat exchanger.

[0104] According to one embodiment of the invention, said third fluidic connectors are attached to the second sub-plate.

[0105] In this way, all the connectors associated with the second refrigerant circuit are gathered on one side of the distribution plate, which facilitates the connection of the module to said second circuit.

[0106] According to one embodiment of the invention, said third fluidic connectors are attached to the first sub-plate.

[0107] Expansion valves reduce the pressure and temperature of the refrigerant entering the heat exchangers. This improves heat transfer between the refrigerant and the heat transfer fluid circulating within the heat exchanger, resulting in more efficient refrigerant cooling. Integrating these valves also improves temperature control, making the fluid more precise. Furthermore, this integration reduces the number of components required by simplifying the module's design and manufacturing.

[0108] According to one embodiment of the invention, the distribution plate comprises at least one second integrated conduit, said second integrated conduit fluidly connecting the second heat exchanger to the third heat exchanger.

[0109] According to one embodiment of the invention, the third heat exchanger is a water condenser, said third heat exchanger comprising a first fraction, called condensation, and a second fraction, called subcooling, the second fraction being interposed between the distribution plate and the first fraction.

[0110] According to one embodiment of the invention, the module includes a fourth heat exchanger, said fourth heat exchanger being attached to the first heat exchanger, so that said first heat exchanger is interposed between the distribution plate and said fourth heat exchanger.

[0111] The fourth heat exchanger is, for example, a plate water evaporator, or "chiller." It is configured to extract heat from the heat transfer fluid and transfer it to the low-pressure refrigerant, which then evaporates. Specifically, the fourth heat exchanger is designed to cool the heat transfer fluid coming from an air cooler, which is used to cool the passenger compartment, particularly when R290 is used as the refrigerant.

[0112] According to one embodiment of the invention, at least one of the first connectors is attached to the fourth heat exchanger.

[0113] According to one embodiment of the invention, the distribution plate comprises a fourth portion extending at least partially along a fourth plane, intersecting the first and second planes.

[0114] According to one embodiment of the invention, the fourth portion extends from the first portion or the second portion, said fourth portion having a free end, opposite to the first portion or the second portion from which it extends.

[0115] According to one embodiment of the invention, the distribution plate comprises at least one angled section, ensuring the connection between the fourth portion and one of the first and second portions.

[0116] According to one embodiment of the invention, the fourth portion comprises the wall of the bottle.

[0117] In this way, the bottle can be tilted at a given angle, so as to limit the volume occupied by the module.

[0118] In one particular embodiment, the first heat exchanger is a plate water condenser, or "Water Cooled Condenser". It is configured to transfer heat from the high-pressure refrigerant, which undergoes condensation, to the heat transfer fluid.

[0119] According to one embodiment of the invention, the first heat exchanger is directly fluidically connected to the first integrated conduits.

[0120] The condenser is thus directly connected to the bottle, which eliminates the need for connecting pipes.

[0121] In this particular embodiment, the third heat exchanger is a plate water evaporator, or "chiller." It is configured to extract heat from the heat transfer fluid and transfer it to the low-pressure refrigerant, which then evaporates. It can be used, in particular, to cool the batteries of an electric vehicle.

[0122] According to one embodiment of the invention, the third heat exchanger is at least partially attached to the second heat exchanger, in particular the second heat exchanger being interposed at least partially between the distribution plate and the third heat exchanger.

[0123] In this way, fluidic communication between the second and third heat exchangers is directly obtained via the faces of the second and third heat exchangers in contact.

[0124] This design simplifies the manufacturing of the heat treatment module by attaching the third heat exchanger to the second, thus allowing the second and third heat exchangers to be directly connected. This has the advantage of reducing the module's mass by decreasing the amount of metal required for its manufacture. Consequently, this reduces the vehicle's weight and the manufacturing cost of the heat pump, while also increasing battery life, particularly in hybrid or electric vehicles.

[0125] According to one embodiment of the invention, said first connectors are attached to the second face of the distribution plate and / or to the third heat exchanger.

[0126] In this way, all the connectors associated with the first heat transfer fluid circuit are gathered on one side of the distribution plate, which facilitates the connection of the module to said first circuit.

[0127] According to one embodiment of the invention, said second connectors are attached to the first face of the distribution plate and / or to the first heat exchanger.

[0128] According to one embodiment of the invention, said third fluidic connectors are attached to the first face of the distribution plate.

[0129] In this way, all the connectors associated with the second refrigerant circuit are gathered on one side of the distribution plate, which facilitates the connection of the module to said second circuit.

[0130] According to one embodiment of the invention, the first heat exchanger is a water condenser, said first heat exchanger comprising the first fraction, called condensation, and the second fraction, called subcooling, the second fraction being interposed between the distribution plate and the first fraction.

[0131] According to one embodiment of the invention, said heat treatment module is configured to thermally insulate, at least partially, the second heat exchanger from the third heat exchanger.

[0132] In this way, the second and third heat exchangers are thermally decoupled.

[0133] According to one embodiment of the invention, said heat treatment module includes a second insulating interface, in particular in the form of an air gap, said second insulating interface being inserted between the second and third heat exchangers.

[0134] According to one embodiment of the invention, the second heat exchanger comprises a first end plate, the third heat exchanger comprises a second end plate, said first and second end plates being configured to thermally insulate the second heat exchanger from the third heat exchanger.

[0135] According to one embodiment of the invention: - the first end plate comprises a first rib directed towards the third heat exchanger, said first rib surrounding a first passage open in the first end plate, - the second end plate comprises a second rib directed towards the second heat exchanger, said second rib surrounding a second passage open in the second end plate, said first and second ribs being in contact, for example welded or brazed together, so as to ensure a sealed fluidic communication between the first and second passages.

[0136] In this way, the third heat exchanger is only in contact with the second heat exchanger at the junction between the first and second ribs. A second insulating interface, formed for example by an air gap or an insulating material, thus thermally isolates the second heat exchanger from the third heat exchanger.

[0137] The first and second ribs are, for example, circular, triangular or rectangular in shape.

[0138] The first and second passages are, for example, circular, triangular or rectangular in shape.

[0139] The first and second ribs thus form ridges around the first and second passages.

[0140] When the first and second ribs are in contact, for example welded, brazed or glued, the first and second end plates ensure a leak-proof fluidic communication between the second and third heat exchangers.

[0141] According to one embodiment of the invention, the first passage is in fluidic communication with a manifold of the second heat exchanger, and the second passage is in fluidic communication with a manifold of the third heat exchanger. In this way, the first and second end plates ensure a sealed fluidic communication between the second and third heat exchangers.

[0142] According to one embodiment of the invention, in which the module includes the fourth heat exchanger, said fourth heat exchanger is attached to the third heat exchanger, so that said third heat exchanger is interposed between the second heat exchanger and said fourth heat exchanger.

[0143] The invention also relates to a heat pump for a vehicle, the heat pump comprising a thermal processing module according to the invention.

[0144] According to one aspect of the invention, the distribution plate has at least one angle, in particular two angles, of different plate extension, thus forming in particular angled sections.

[0145] This makes it advantageous to manage the bottle's footprint in relation to the heat exchangers.

[0146] According to one aspect of the invention, the distribution plate has at least one angle, in particular two, at the level of angled sections, the angle or angles being between 15° and 85°, preferably between 30° and 60°.

[0147] The formation of this angle or these angles is achieved in particular by bending or folding, preferably after the brazing of the plates, which is carried out on the plates when they are generally flat in order to ensure a better quality brazing.

[0148] However, during the bending operation, the channels act as stiffeners and are deformed, which causes a reduction in the hydraulic cross-section and a thinning of the wall of said channels.

[0149] Surprisingly, the inventors found that reinforcing the channels in these areas of curvature made it possible to partially or even totally prevent the reduction of the hydraulic cross-section and the thinning of the channel walls.

[0150] Thus, the present invention also relates to a module in which the distribution plate includes areas of curvature delimiting at least a first portion and a second portion, the channels at the level of these areas of curvature including means for reinforcing the channels.

[0151] According to one aspect of the invention, the distribution plate includes, at the bending zones, orifices in channel-free areas, the orifices being configured to facilitate the bending of said distribution plate.

[0152] These openings, which can for example be made by cutting the plate or each plate as appropriate, advantageously facilitate the bending or folding of the plate by reducing the amount of material to be curved.

[0153] These openings may, for example, have oblong shapes, some oblong shapes having enlarged longitudinal ends to further simplify the folding step of the plate.

[0154] In some embodiments, the distribution plate includes at the bending areas at least one, in particular a plurality of orifices in channel areas, each orifice separating a channel into two parts, the module further comprising at least one pipe having reinforcing means, in particular ridges, the pipe being assembled to the two parts of said channel in order to connect them in a watertight manner.

[0155] The pipes are preferably assembled to the duct sections by placing them between the two plates of the distribution plate before the plates are welded, particularly by furnace brazing, to the pipes. This allows for a simple assembly and ensures a watertight connection.

[0156] According to a particular embodiment of the invention, the pipe(s) are made of aluminum, steel, or an aluminum-steel composite.

[0157] According to a particular embodiment of the invention, the pipe(s) are made by hydroforming.

[0158] According to a particular embodiment of the invention, the pipe(s) exhibit a lower resistance to deformation than the sub-plates.

[0159] According to a particular embodiment of the invention, the pipe(s) have grooves to facilitate their deformation during the folding or bending of the plate.

[0160] According to a particular embodiment of the invention, the means for reinforcing the channels are made before the bending of the distribution plate, preferably before the assembly of the two plates forming the distribution plate.

[0161] The present invention also relates to a method for manufacturing a module as described above, which comprises the following steps: - Supplying the flat sub-plates of the distribution plate, - Stamping to form the channels, with the formation during this step of grooves to reinforce the channels in the areas of curvature, and optionally cutting the sub-plates in the areas of curvature to form holes to facilitate bending, - Brazing the plates together, including the reinforcing means, - Bending the distribution plate thus formed

[0162] The present invention also relates to a method of manufacturing a module as described above, which includes the following steps: - Supplying the flat sub-plates of the distribution plate, - Stamping to form the channels and cutting the sub-plates in the areas of curvature so as to form orifices at least in the channel areas, - Adding the pipes at the orifices in each channel so as to connect the two parts of a channel, - Brazing the plates and the reinforcing means together.

[0163] In some embodiments, the process further includes an additional step of supplying and assembling at least one, preferably several, heat exchangers to the distribution plate before the brazing step.

[0164] This advantageously allows for a single soldering step for all the module components together.

[0165] The invention also relates to a heat treatment module for vehicles, particularly electric vehicles. This module comprises a bottle formed at least partially by the distribution plate. The bottle includes an end portion, also called a cap, for closing the bottle, and a filtration assembly. The cap is reversibly attached to the bottle for closure, and the filtration assembly is attached to the cap.

[0166] This allows for easy replacement of the filtration components without having to replace the entire tank. This is especially advantageous because the tank is at least partially formed by the distribution plate of the heat treatment module. Replacing the entire tank would necessitate replacing the entire module, potentially including several heat exchangers attached to it.

[0167] In some embodiments, the cap is reversibly attached to the bottle by screwing. Other suitable reversible attachment methods may be used.

[0168] In some embodiments, the fluid inlet and outlet of the bottle are formed by conduits integrated directly into the bottle wall. In other words, the cap does not have a fluid inlet or outlet.

[0169] In some embodiments, the filtration assembly includes a rod connected to the stopper and extending inside the bottle. The rod carries at least one, preferably two, filter support(s), in particular circular ones. Each filter support is configured to be in contact with the bottle wall around its entire circumference, so as to achieve a leak-proof seal.

[0170] Thus, in some embodiments, the filter support has a circumference substantially equal to that of the inner wall of the bottle.

[0171] In some embodiments, the bottle wall includes a radial ridge or rib configured to form a stop in contact with a filter support, in particular the filter support furthest from the cap, in order to allow easy and reliable sealing.

[0172] In embodiments where the stem includes two filter supports, the filtration assembly further includes desiccant, in particular desiccant beads, arranged between the two filter supports.

[0173] In some embodiments, each filter support has orifices to form a filter in combination with a desiccant, such as desiccant beads. These orifices allow the fluid to be filtered to pass through but not the desiccant, thus retaining the moisture present in the fluid.

[0174] The desiccant, in particular the desiccant beads, are thus blocked between the two filter supports and allow dehydration.

[0175] The invention thus allows for easy replacement of the desiccant, particularly the desiccant beads, by simply removing the bottle cap and replacing it with another cap incorporating a filtration assembly. This also reduces the cost of maintenance during air conditioning system servicing and limits the risk of reintroducing moisture into the system during vehicle maintenance.

[0176] A desiccant is understood to be a hygroscopic substance used to induce or maintain a state of dryness, that is to say, with little or no moisture.

[0177] Desiccant beads can of course take different forms and be gathered in a desiccant bag.

[0178] In some embodiments, the cap is configured to allow connection to a desiccant filling / suction machine (not shown), particularly for desiccant beads. The stem is then hollow and includes at least one, preferably two, holes located between the two filter supports carried by the stem. The holes in the stem are preferably advantageously sized to allow for the addition or removal of desiccant, particularly desiccant beads.

[0179] Other features, details, and advantages will become apparent upon reading the detailed description below and analyzing the attached drawings, on which:

[0180] diagrams a first variant of the realization of a two-fluid circuit of a heat pump comprising a thermal treatment module according to a first embodiment of the invention.

[0181] is a perspective view of a heat treatment module according to the first embodiment of the invention.

[0182] is a perspective view of a distribution plate of the heat treatment module of the.

[0183] is a side view of the distribution plate.

[0184] is an exploded view of the heat treatment module of the.

[0185] diagrams a second variant of the implementation of a two-fluid circuit of a heat pump comprising a thermal treatment module according to a second embodiment of the invention.

[0186] is a perspective view of a heat treatment module according to the second embodiment of the invention.

[0187] is a perspective view of a heat treatment module according to a third embodiment of the invention.

[0188] is a perspective view of a heat treatment module according to a fourth embodiment of the invention.

[0189] is an exploded view of the heat treatment module of the.

[0190] is an exploded view of a first end plate of a second heat exchanger and a second end plate of a third heat exchanger of the thermal processing module of the.

[0191] is a perspective view of part of a heat treatment module according to a fifth embodiment of the invention.

[0192] is a perspective view of part of a heat treatment module according to a sixth embodiment of the invention.

[0193] is a perspective view of a portion of a heat treatment module according to another embodiment of the invention.

[0194] is a perspective view of the detail of the filtration assembly according to one embodiment of the invention.

[0195] is a top view of a heat treatment module according to a fifth embodiment.

[0196] To facilitate the reading of the figures, the different elements are not necessarily drawn to scale. In these figures, identical elements have the same reference numbers. Some elements or parameters may be indexed, that is, designated, for example, as first element or second element, or first parameter and second parameter, etc. This indexing aims to differentiate between similar, but not identical, elements or parameters. This indexing does not imply any priority of one element or parameter over another. The designations 'first', 'second', 'third', etc., can therefore be interchanged.

[0197] Figure 100 represents a two-fluid circuit of a heat pump for a motor vehicle, according to a first embodiment. This two-fluid circuit 100 comprises a refrigerant loop 101 through which a refrigerant, for example R134a, R744, or R290, circulates; a first heat transfer fluid loop 102 (shown schematically) through which a first heat transfer fluid, for example glycol water or a dielectric fluid, circulates; and a second heat transfer fluid loop 103 (shown schematically) through which a second heat transfer fluid, for example glycol water or a dielectric fluid, circulates. The first and second heat transfer fluids may be of the same type or different types.

[0198] The refrigerant loop 101 comprises, in the direction of refrigerant flow: - a compressor 104, - a first two-fluid heat exchanger 105, located downstream of the compressor 104, configured to extract heat from the high-pressure refrigerant by its condensation and transfer it to the heat transfer fluid of the first heat transfer fluid loop 102, this exchanger may be designated as a water condenser or WCDS for "Water Cooled Condenser", - a desiccant bottle 106 or bottle configured to capture moisture from the refrigerant,- a high-pressure pass of a second internal heat exchanger 107 (generally designated as an internal heat exchanger or IHX for "Internal Heat Exchanger" in English abbreviation) configured to cool the refrigerant by heat exchange between the high-pressure refrigerant of the high-pressure pass and the low-pressure refrigerant of a low-pressure pass of the second internal heat exchanger 107, - a first branch 101A comprising: - a first expansion element 108, this first expansion element 108 being connected to a third bi-fluid heat exchanger 109, - said third bi-fluid heat exchanger 109, configured to extract heat from the heat transfer fluid of the second heat transfer fluid loop 103 and transfer it to the low-pressure refrigerant by its evaporation, this exchanger being able to be designated as a water evaporator (or "Water Chiller" in English), - a second branch 101B,in parallel with the first branch 101A, comprising: -- a second expansion member 110, this second expansion member 110 being connected to a fourth air heat exchanger 111, -- said fourth air heat exchanger 111, configured to extract heat from an internal airflow Fi passing through it and transfer it to the low-pressure refrigerant by its evaporation, this exchanger being able to be designated as an air evaporator, -- the low-pressure pass of the second internal heat exchanger 107.

[0199] According to a particular embodiment, the refrigerant loop 101 also includes a third branch 101C directly connecting, in the direction of refrigerant flow, the compressor 104 to the low-pressure pass of the second internal heat exchanger 107. The third branch 101C includes a third expansion valve 112.

[0200] This third circulation branch 101C allows, in a so-called "lossy mode," the injection of steam from the outlet of compressor 104 to the low-pressure inlet of the second internal heat exchanger 107. In this mode, the third two-fluid heat exchanger 109 and the fourth air-cooled heat exchanger 111 are inactive. The fluid downstream of the third and fourth heat exchangers 109 and 111 is therefore a low-pressure liquid-vapor two-phase fluid. This low-pressure liquid-vapor two-phase fluid is mixed with the steam from compressor 104, which has been expanded by the third expansion valve 112. This mixing ensures that the fluid exiting the low-pressure pass of the second internal heat exchanger 107 is indeed in a vapor state, so as not to damage compressor 104.

[0201] The refrigerant loop 101 is not described in further detail as it is known from the prior art. The same applies to the first and second heat transfer fluid loops 102 and 103.

[0202] Figures 2 to 5 represent a heat treatment module 1 for a vehicle, in particular for an electric vehicle, according to a first embodiment of the invention.

[0203] According to the first embodiment of the invention, said module comprises: - a distribution plate 20 comprising a first face 21 and a second face 22, said distribution plate 20 forming, at least partially, a wall 31 of a bottle 30, in particular an accumulator or a desiccant bottle, said distribution plate 20 comprising first integrated conduits 40 configured to be put into fluidic communication with said bottle 30, - a first heat exchanger 50, attached to the first face 21, said module 1 being characterized in that it comprises a second heat exchanger 60, attached to the second face 22.

[0204] In the heat pump, the thermal processing module 1 performs the heat exchange between two different temperature levels of a refrigerant. This refrigerant is, for example, of type R134a, R1234yf, R744 or R290.

[0205] This module 1 also performs heat exchanges between the refrigerant and one or more heat transfer fluids circulating in different components of said module 1. These heat exchanges allow module 1 to regulate the temperature of vehicle compartments, such as the engine compartment or the passenger compartment.

[0206] The heat transfer fluid can be, for example, water, a mixture of water and ethylene glycol, or a dielectric fluid.

[0207] At least one of the first and second heat exchangers 50, 60 is fluidly connected to a first circuit and a second circuit.

[0208] The first circuit is a heat transfer fluid circuit and the second circuit is a refrigerant fluid circuit.

[0209] According to the embodiment illustrated in figures 2 to 5, the first heat exchanger 50 is connected to the first circuit and the second circuit.

[0210] The distribution plate 20 forms the bottle 30, while also serving as a support, on both sides, for the first and second heat exchangers 50, 60.

[0211] The bottle 30 can be either a desiccant bottle 106 or an accumulator. Preferably, the bottle 30 is a desiccant bottle. The formulation "configured to form, at least partially, a wall 31 of the bottle 30" means that a portion of the distribution plate 20 can form all or part of the wall and adapt to any shape or size of the bottle 30, whether it is an accumulator or a desiccant bottle.

[0212] More specifically, the desiccant bottle in a heat pump serves primarily to remove moisture and impurities from the refrigerant. This reduces the damage caused by the refrigerant to the secondary circuit, decreasing the risk of corrosion and preventing alterations to the refrigerant's properties. The desiccant bottle also ensures the refrigerant circulates in a liquid state within the unit. Finally, this bottle also acts as a refrigerant reservoir to guarantee the proper functioning of the fluid circuit, which depends on the pump's operating conditions and the presence or absence of micro-leaks in the fluid circuit.

[0213] The accumulator, or heat accumulator, serves as a storage tank for the refrigerant. It also acts as a desiccant by trapping moisture and impurities from the refrigerant flowing through it.

[0214] According to the first embodiment, illustrated in particular, the first heat exchanger 50 corresponds, for example, to the third two-fluid heat exchanger 109. The first heat exchanger 50 is here a plate water evaporator, or "chiller." It is configured to extract heat from the heat transfer fluid and transfer it to the low-pressure refrigerant, which then evaporates. It can notably be used to cool the batteries of the electric vehicle.

[0215] According to this embodiment, the second heat exchanger 60 corresponds, for example, to the second internal heat exchanger 107. The second heat exchanger 60 is here an internal plate heat exchanger, or IHX for "Internal Heat Exchanger". The internal heat exchanger is configured to perform heat exchange between low-pressure refrigerant and high-pressure refrigerant.

[0216] As illustrated, the distribution plate 20 comprises a first sub-plate 210, forming the first face 21 of said distribution plate 20, and a second sub-plate 220, forming the second face 22 of said distribution plate 20. Said first and second sub-plates 210, 220 are assembled together to form, at least partially, the wall 31 of the bottle 30.

[0217] According to the illustrated example, the first heat exchanger 50 is attached to the first sub-plate 210, the second heat exchanger 60 being attached to the second sub-plate 220.

[0218] In this way, the manufacture of module 1 is facilitated, being limited to the assembly of the first and second heat exchangers 50, 60 and two sub-plates 210, 220.

[0219] As illustrated, the distribution plate 20 includes at least one orifice 23, in particular a plurality of orifices 23, configured to put the first heat exchanger 50 into fluidic relationship with the second heat exchanger 60.

[0220] Thus, module 1 does not require specific pipes to ensure fluid circulation between the first and second heat exchangers 50, 60. Fluid communication between the first and second heat exchangers 50, 60 is obtained directly through the distribution plate 20, in particular via the faces of the first and second heat exchangers 50, 60 in contact with the distribution plate 20.

[0221] The first and second subplates 210, 220 comprise, respectively, first and second parts 211, 221 configured to form, at least partially, the wall 31 of the bottle 30.

[0222] In this way, the bottle 30 is directly formed by the sub-plates 210, 220, which simplifies manufacturing, as the bottle 30 does not need to be fixed to the distribution plate 20.

[0223] The first and second parts 211, 221 of the first and second sub-plates 210, 220 configured to form, at least partially, the wall 31 of the bottle 30, are fixed together at a connection 24 oriented parallel to a longitudinal axis of the bottle 30.

[0224] The connection 24 allows the two sub-plates 210 and 220 to be joined together to form the distribution plate 20. This connection 24 also secures and seals the two sub-plates 210 and 220 to facilitate the positioning and sealing of connectors, while simplifying assembly. The orientation of the connection 24, parallel to the longitudinal axis of the bottle 30, also minimizes the overall size of module 1 and bottle 30, and provides structural reinforcement. The attachment is achieved using methods known to those skilled in the art, such as welding, brazing, or bolting.

[0225] The parts 211, 221 of the sub-plates 210, 220 are fixed together by a junction 25 positioned at a distance from the link 24 and oriented parallel to the longitudinal axis of the bottle 30.

[0226] This junction 25 thus forms a second connection between the sub-plates 210 and 220. The junction 25 is therefore preferably made using methods known to those skilled in the art, such as brazing or welding. This second connection between the sub-plates 210 and 220 improves the reliability and service life of the heat treatment module 1. The distance between the link 24 and the junction 25 can vary depending, for example, on the manufacturing constraints of the sub-plates 210 and 220. For example, the junction 25 is located on the side of the bottle 30 opposite the link 24, allowing the formation of sub-plates 210 and 220 of similar sizes, thus facilitating their manufacture.

[0227] The parts 211, 221 of the first and second sub-plates 210, 220 are fixed together by the link 24 and by the junction 25, the wall 31 of the bottle 30 also being closed by at least a first end portion 32, or first stopper.

[0228] Advantageously, the wall 31 of the bottle 30 comprises the portions 211, 221 of the first and second sub-plates 210, 220 and the first end portion 32, which are fixed together. This variant is particularly preferred because it simplifies the design and assembly of the heat treatment module 1 of the heat pump, while also limiting its mass. The first end portion 32 and the sub-plates 210, 220 are fixed together using methods known to those skilled in the art, such as brazing or welding.

[0229] According to a particular embodiment of the invention, not shown, the first end portion 32 is screwed to the parts 211, 221 of the first and second sub-plates 210, 220 to form the bottle 30.

[0230] The first 40 integrated conduits are configured to be fluidly connected to the second circuit.

[0231] The aforementioned first integrated conduits 40 are fluidly connected to the bottle 30.

[0232] Channels 41, illustrated in particular, are formed in the first sub-plate 210 and / or in the second sub-plate 220, the assembly of the first and second sub-plates 210, 220 closing said channels 41 to form the first integrated conduits 40.

[0233] The production of channels 41 formed in the distribution plate 20 simplifies the assembly of module 1, bottle 30 and distribution plate 20, reducing the number of connectors and pipes to be manufactured and installed in the pump.

[0234] Preferably, the channels 41 are formed in both the first sub-plate 210 and the second sub-plate 220.

[0235] Alternatively, the channels 41 are stamped into the first sub-plate 210, the second sub-plate 220 closing said channels 41 to form the first integrated conduits 40. Alternatively again, the channels 40 can also be stamped into the second sub-plate 210 or into the distribution plate 20, when a single plate is used to form the wall 31 of the bottle 30.

[0236] Deep drawing is a technique familiar to those skilled in the art and easy to implement, which facilitates the manufacture of plates, sub-plates, and channels. Sealing can be ensured by fastening methods known to those skilled in the art, such as welding, brazing, or bolting; this seal allows for proper fluid circulation between the cylinder 30 and the second refrigerant circuit.

[0237] The distribution plate 20 is configured to thermally insulate, at least partially, the first heat exchanger 50 from the second heat exchanger 60.

[0238] In this way, the first and second heat exchangers 50, 60 are thermally decoupled.

[0239] According to the first embodiment illustrated in particular, the distribution plate 20 includes a first insulating interface, in particular in the form of a layer of insulating material 90, said insulating interface being inserted between the first and second heat exchangers 50, 60, in particular between the first and second sub-plates 210, 220.

[0240] In this way, the insulating interface, in particular the insulating material 90, allows the first and second heat exchangers 50, 60 to be thermally decoupled.

[0241] The insulating interface is, for example, made of polystyrene, polyurethane, or wood fiber.

[0242] According to another alternative embodiment of the invention, not illustrated, the distribution plate 20 includes at least a first opening configured to thermally insulate, at least partially, the first heat exchanger 50 from the second heat exchanger 60.

[0243] In particular, each of the first and second subplates 210, 220 includes at least one opening configured to thermally insulate, at least partially, the first heat exchanger 50 from the second heat exchanger 60. Said openings overlap at least partially.

[0244] In this way, a layer of gas, in particular air, or vacuum, extending between the first and second heat exchangers 50, 60, constitutes the insulating interface and thermally decouples the first and second heat exchangers 50, 60.

[0245] Module 1 includes a third heat exchanger 70, at least partially attached to the first or second face 21, 22, said third heat exchanger 70 being in particular directly fluidically connected to the first integrated conduits 40.

[0246] According to the first embodiment, the third heat exchanger 70 corresponds, for example, to the first two-fluid heat exchanger 105. The third heat exchanger 70 is here a plate water-cooled condenser. It is configured to transfer heat from the high-pressure refrigerant, which undergoes condensation, to the heat transfer fluid.

[0247] The condenser is directly connected to the 30 bottle, which eliminates the need for connecting pipes.

[0248] The third heat exchanger 70 is attached to the first sub-plate 210 or to the second sub-plate 220, here to the second sub-plate 220.

[0249] The distribution plate 20 comprises a first portion 26 and a second portion 27, the first heat exchanger 50 and the second heat exchanger 60 being attached to the first portion 26, said first portion 26 being at least partially intercalated between the first heat exchanger 50 and the second heat exchanger 60. The third heat exchanger 70 is, for its part, attached to the second portion 27.

[0250] According to the first embodiment: - the first portion 26 is formed by a first segment of the first and second sub-plates 210, 220, - the second portion 27 is formed by a second segment of the first and second sub-plates 210, 220.

[0251] Thus, the distribution plate 20, formed by the first and second sub-plates 210, 220, extends from the first portion 26 to the second portion 27.

[0252] In this way, the heat exchanges between the first and second heat exchangers 50, 60 on the one hand and the third heat exchanger 70 on the other hand are limited.

[0253] As illustrated in figures 3 and 4, the first portion 26 of the distribution plate 20 extends along a first plane P1, the second portion 27 extends along a second plane P2, different from the first plane P1, here parallel to the first plane P1.

[0254] In this way, the height of module 1, that is to say the dimension of module 1 in a first direction D, perpendicular to the first and second planes P1, P2, is improved, in particular in the case where the height of the third heat exchanger 70, measured along the first direction D, is greater than the height of the first heat exchanger 50, measured along the first direction D, added to the height of the second heat exchanger 60, measured along the first direction D.

[0255] In this way, the first and second heat exchangers 50, 60 being attached on either side of the first portion 26 and the third heat exchanger 70 being attached to the second portion 27, offset from the first portion 27 along the first direction D, the height of module 1 corresponds to the minimum of:- the height of the stack of the first heat exchanger 50, the distribution plate 20 and the second heat exchanger 60,- the height of the stack of the third heat exchanger 70 and the distribution plate 20.

[0256] As illustrated in particular, the distribution plate 20 includes a third portion 2627, said third portion 2627 extending at least partially along a third plane P3, intersecting the first and second planes P1, P2.

[0257] Said third portion 2627 comprises the wall 31 of the bottle 30.

[0258] A first angle A1, formed between the first plane P1 and the third plane P3, is between 15° and 85°, preferably between 30° and 60°.

[0259] The distribution plate 20 includes at least one angled section 28, ensuring the connection between the first portion 26 and the second portion 27.

[0260] In particular, the distribution plate 20 has two angled sections 28, ensuring the connection on the one hand between the third portion 2627 and the first portion 26, on the other hand between the third portion 2627 and the second portion 27.

[0261] In this way, bottle 30 can be tilted at a given angle so as to limit the volume occupied by module 1.

[0262] In particular, the first portion 26 and the second portion 27 of the distribution plate 20 are separated by at least one cutout 29 of said distribution plate 20.

[0263] This cut 29 allows thermal decoupling between the first and second portions 26, 27.

[0264] The first portion 26 and the second portion 27 of the distribution plate 20 extend on either side of the wall 31 of the bottle 30.

[0265] In this way, the bottle 30 and the cutouts 29 form thermal barriers between the first portion 26 and the second portion 27.

[0266] The second portion 27 of the distribution plate 20 includes a second opening 91, illustrated, in particular opposite the third heat exchanger 70.

[0267] This opening helps to limit the weight of material of the distribution plate 20, and to limit the conduction between the distribution plate 20 and said third heat exchanger 70.

[0268] The module comprises a plurality of first connectors 42 forming inlets and outlets of heat transfer fluid, said first connectors 42 being fluidly connected to the first heat transfer fluid circuit.

[0269] The said first connectors 42 are attached to the first face 21 of the distribution plate 20 and to the first heat exchanger 50.

[0270] In this way, all the connectors associated with the first heat transfer fluid circuit are gathered on one side of the distribution plate 20, which facilitates the connection of module 1 to said first circuit.

[0271] According to an embodiment not illustrated, in which the third heat exchanger 70 is attached to the first face 21, in particular to the first sub-plate 210, at least one of the first connectors 42, in particular the first two connectors 42, are attached to said third heat exchanger 70.

[0272] According to a particular embodiment, at least one of the first connectors 42, in particular the first two connectors 42, are attached to the second portion 27 of the distribution plate 20, in particular to the first face 21 of the distribution plate 20.

[0273] According to one embodiment of the invention, at least one of the first connectors 42, in particular the first two connectors 42, are attached to the first sub-plate 210 or to the second sub-plate 220.

[0274] The module includes a plurality of second connectors 43 forming refrigerant inlets and outlets, said second connectors 43 being fluidly connected to the second refrigerant circuit, said second connectors 43 being attached to the second face 22 of the distribution plate 20 and / or to the second heat exchanger 60.

[0275] According to the first embodiment, in which the third heat exchanger 70 is attached to the second face 22, in particular to the second sub-plate 220, at least one of the second connectors 43, in particular two second connectors 43, are attached to said third heat exchanger 70.

[0276] According to one embodiment of the invention, at least one of the second connectors 43, in particular two second connectors 43, are attached to the first sub-plate 210 or to the second sub-plate 220.

[0277] Module 1 includes one or more third fluidic connectors 44 adapted to receive each a fluid expansion member 45, corresponding for example to the first and second expansion members 108, 110 of the, said third fluidic connectors 44 being attached to the second heat exchanger 60.

[0278] In this way, all the connectors associated with the second refrigerant circuit are gathered on one side of the distribution plate 20, which facilitates the connection of module 1 to said second circuit.

[0279] The expansion valves 45 serve to reduce the pressure and temperature of the refrigerant at the inlet of the heat exchangers. This improves heat exchange between the refrigerant and the heat transfer fluid circulating in the heat exchanger, thus enabling more efficient cooling of the refrigerant. The integration of these valves also improves temperature control, making it more precise. This integration also reduces the number of parts required by simplifying the design and manufacturing of module 1.

[0280] The distribution plate 20 includes at least one second integrated conduit 400, said second integrated conduit 400 fluidly connecting the second heat exchanger 60 to the third heat exchanger 70.

[0281] The third heat exchanger 70 is a water condenser, said third heat exchanger 70 comprising a first fraction 71, called condensation, and a second fraction 72, called subcooling, the second fraction 72 being interposed between the distribution plate 20 and the first fraction 71.

[0282] Figure 100 represents a two-fluid circuit of a heat pump for a motor vehicle, according to a second embodiment. This two-fluid circuit 100 comprises a refrigerant loop 101 in which a refrigerant circulates, a first heat transfer fluid loop 102 (represented very schematically) in which a first heat transfer fluid circulates, for example glycol water or a dielectric fluid, a second heat transfer fluid loop 103 (represented very schematically) in which a second heat transfer fluid circulates, for example glycol water or a dielectric fluid, a third heat transfer fluid loop 104 (represented very schematically) in which a third heat transfer fluid circulates, for example glycol water or a dielectric fluid. The first heat transfer fluid, the second heat transfer fluid and the third heat transfer fluid can be of the same nature, or of different natures.

[0283] The refrigerant loop 101 comprises, in the direction of refrigerant flow: - a compressor 104, - a first two-fluid heat exchanger 105, located downstream of the compressor 104, configured to extract heat from the high-pressure refrigerant by its condensation and transfer it to the heat transfer fluid of the first heat transfer fluid loop 102, this exchanger may be designated as a water condenser or WCDS for "Water Cooled Condenser", - a desiccant bottle 106 or bottle configured to capture moisture from the refrigerant,- a high-pressure pass of a second internal heat exchanger 107 (generally designated as an internal heat exchanger or IHX for "Internal Heat Exchanger" in English abbreviation) configured to cool the refrigerant by heat exchange between the high-pressure refrigerant of the high-pressure pass and the low-pressure refrigerant of a low-pressure pass of the second internal heat exchanger 107, - a first branch 101A comprising: - a first expansion element 108, this first expansion element 108 being connected to a third bi-fluid heat exchanger 109, - said third bi-fluid heat exchanger 109, configured to extract heat from the heat transfer fluid of the second heat transfer fluid loop 103 and transfer it to the low-pressure refrigerant by its evaporation, this exchanger being able to be designated as a water evaporator (or "Chiller" in English), - a second branch 101B,in parallel with the first branch 101A, comprising: -- a second expansion member 110, this second expansion member 110 being connected to a fourth heat exchanger 111, -- said fourth heat exchanger 111 being, according to this second embodiment, a two-fluid heat exchanger, configured to extract heat from the heat transfer fluid of the third heat transfer fluid loop 104 and transfer it to the low-pressure refrigerant by its evaporation, this exchanger being able to be designated as a water evaporator (or "Chiller" in English), -- the low-pressure pass of the second internal heat exchanger 107.

[0284] According to a particular embodiment, the refrigerant loop 101 also includes a third branch 101C directly connecting, in the direction of refrigerant flow, the compressor 104 to the low-pressure pass of the second internal heat exchanger 107. The third branch 101C includes a third expansion valve 112.

[0285] This third circulation branch 101C allows, in a so-called "lossy mode," the injection of steam from the outlet of compressor 104 to the low-pressure inlet of the second internal heat exchanger 107. In this mode, the third two-fluid heat exchanger 109 and the fourth two-fluid heat exchanger 111 are inactive. The fluid downstream of the third and fourth heat exchangers 109 and 111 is therefore a low-pressure liquid-vapor two-phase fluid. This low-pressure liquid-vapor two-phase fluid is mixed with the steam from compressor 104, which has been expanded by the third expansion valve 112. This mixing ensures that the fluid exiting the low-pressure pass of the second internal heat exchanger 107 is indeed in a vapor state, so as not to damage compressor 104.

[0286] The refrigerant loop 101 is not described in further detail as it is known from the prior art. The same applies to the first, second, and third heat transfer fluid loops 102, 103, and 104.

[0287] Lare represents a heat treatment module 1 for vehicles, in particular for electric vehicles, according to a second embodiment of the invention.

[0288] Subsequently, we will only describe the characteristics that differentiate the second embodiment from the first embodiment.

[0289] According to the second embodiment of the invention, module 1 includes a fourth heat exchanger 80, corresponding, for example, to the second two-fluid heat exchanger 111. The fourth heat exchanger 80 is a plate water evaporator, or "chiller." It is configured to extract heat from the heat transfer fluid and transfer it to the low-pressure refrigerant, which then evaporates. In particular, the fourth heat exchanger 80 is intended to cool the heat transfer fluid from a heat exchanger known as an air cooler, which is used to cool the passenger compartment, especially when R290 is used as the refrigerant.

[0290] The said fourth heat exchanger 80 is here attached to the first heat exchanger 50, so that the said first heat exchanger 50 is interposed between the distribution plate 20 and the said fourth heat exchanger 80.

[0291] The said first heat exchanger 50 can notably be used to cool the batteries of the electric vehicle.

[0292] According to a particular embodiment of the invention, said fourth heat exchanger 80 is associated with an expansion device, not shown. In this way, each of the first and fourth heat exchangers 50, 80 having its own expansion device, the pressure levels, and therefore the temperature, within said first and fourth heat exchangers 50, 80 can be controlled independently so as to meet the cooling requirements of the batteries and the passenger compartment, respectively.

[0293] According to the second embodiment of the invention, at least one of the first connectors 42 is attached to the fourth heat exchanger 80.

[0294] Lare represents a heat treatment module 1 for vehicles, in particular for electric vehicles, according to a third embodiment of the invention.

[0295] Subsequently, we will only describe the characteristics that differentiate the third embodiment from the first embodiment.

[0296] According to the third embodiment of the invention, the distribution plate 20 comprises a fourth portion 2628, said fourth portion 2628 extending at least partially along a fourth plane P4, intersecting the first, second and third planes P1, P2, P3.

[0297] The said fourth portion 2628 comprises the wall 31 of the bottle 30.

[0298] The said fourth portion 2628 extends from the second portion 27 and has a free end 200, opposite the second portion 27 from which it extends.

[0299] The distribution plate 20 has an angled section 28, ensuring the connection between the fourth portion 2628 and the second portion 27.

[0300] In this way, bottle 30 can be tilted at a given angle so as to limit the volume occupied by module 1.

[0301] Figures 9 to 11 represent a heat treatment module 1 for a vehicle, in particular for an electric vehicle, according to a fourth embodiment of the invention.

[0302] Subsequently, we will only describe the characteristics that differentiate the fourth embodiment from the first embodiment.

[0303] According to the fourth embodiment of the invention, the first heat exchanger 50 corresponds, for example, to the first two-fluid heat exchanger 105. The first heat exchanger 50 is here a plate water-cooled condenser. It is configured to transfer heat from the high-pressure refrigerant, which undergoes condensation, to the heat transfer fluid.

[0304] The first heat exchanger 50 is directly fluidically connected to the first integrated conduits 40.

[0305] The water condenser is thus directly connected to the 30 bottle, which eliminates the need for connecting pipes.

[0306] The second heat exchanger 60 corresponds, for example, to the second internal heat exchanger 107. The second heat exchanger 60 is here an internal plate heat exchanger, or IHX for "Internal Heat Exchanger". The internal heat exchanger is configured to perform heat exchange between low-pressure refrigerant and high-pressure refrigerant.

[0307] According to the fourth embodiment of the invention, the third heat exchanger 70 corresponds to the third bi-fluid heat exchanger 109. The third heat exchanger 70 is a plate water evaporator, or "chiller." It is configured to extract heat from the heat transfer fluid and transfer it to the low-pressure refrigerant, which then evaporates. It can be used, in particular, to cool the batteries of an electric vehicle.

[0308] According to this fourth embodiment of the invention, said first connectors 42 are attached to the second face 22 of the distribution plate 20 and to the third heat exchanger 70.

[0309] In this way, all the connectors associated with the first heat transfer fluid circuit are gathered on one side of the distribution plate 20, which facilitates the connection of module 1 to said first circuit.

[0310] According to this embodiment, said second connectors 43 are attached to the first face 21 of the distribution plate 20 and to the first heat exchanger 50.

[0311] The said third fluidic connectors 44 are attached to the first face 21 of the distribution plate 20.

[0312] In this way, all the connectors associated with the second refrigerant circuit are gathered on one side of the distribution plate 20, which facilitates the connection of module 1 to said second circuit.

[0313] The first heat exchanger 50 is a water condenser, said first heat exchanger 50 comprising the first fraction 71, called condensation, and the second fraction 72, called subcooling, the second fraction 72 being interposed between the distribution plate 20 and the first fraction 71.

[0314] According to this embodiment, the third heat exchanger 70 is at least partially attached to the second heat exchanger 60, the second heat exchanger 60 being interposed at least partially between the distribution plate 20 and the third heat exchanger 70.

[0315] In this way, fluidic communication between the second and third heat exchangers 60, 70 is directly obtained via the faces of the second and third heat exchangers 60, 70 in contact.

[0316] According to this embodiment, said heat treatment module 1 is configured to thermally insulate, at least partially, the second heat exchanger 60 from the third heat exchanger 70.

[0317] In this way, the second and third heat exchangers 60, 70 are thermally decoupled.

[0318] The said heat treatment module 1 includes a second insulating interface, in particular in the form of an air gap, said second insulating interface being inserted between the second and third heat exchangers 60, 70.

[0319] According to this embodiment, the second heat exchanger 60 comprises a first end plate 610, the third heat exchanger 70 comprises a second end plate 710, said first and second end plates being configured to thermally insulate the second heat exchanger 60 from the third heat exchanger 70.

[0320] According to this embodiment, as illustrated: - the first end plate 610 comprises a first rib 620 directed towards the third heat exchanger 70, said first rib 620 surrounding a first passage 630 open in the first end plate 610, - the second end plate 710 comprises a second rib 720 directed towards the second heat exchanger 60, said second rib 720 surrounding a second passage 730 open in the second end plate 710, said first and second ribs 620, 720 being in contact, for example welded or brazed together, so as to ensure a sealed fluidic communication between the first and second passages 630, 730 between the second and third heat exchangers 60, 70.

[0321] In this way, the third heat exchanger 70 is in contact with the second heat exchanger 60 only at the junction between the first and second ribs 620, 720. A second insulating interface, formed by an air gap, thus thermally insulates the second heat exchanger 60 from the third heat exchanger 70.

[0322] The first and second ribs 620, 720 are for example circular, triangular or rectangular in shape.

[0323] The first and second passages 630, 730 are for example circular, triangular or rectangular in shape.

[0324] The first and second ribs 620, 720 thus form ridges around the first and second passages 630, 730.

[0325] When the first and second ribs 620, 720 are in contact, for example welded, brazed or glued, the first and second end plates 610, 710 ensure a sealed fluidic communication between the second and third heat exchangers 60, 70.

[0326] The first passage 630 is in fluidic communication with a manifold of the second heat exchanger 60, the second passage 730 is in fluidic communication with a manifold of the third heat exchanger 70. In this way, the first and second end plates 610, 710 ensure a sealed fluidic communication between the second and third heat exchangers 60, 70.

[0327] According to the fourth embodiment of the invention, said third fluidic connectors 44 are attached to the first sub-plate 210.

[0328] According to a particular embodiment of the invention, not shown, a fourth heat exchanger 80 is attached to the third heat exchanger 70, so that said third heat exchanger 70 is interposed between the second heat exchanger 60 and said fourth heat exchanger 80.

[0329] According to a fifth embodiment of the heat treatment module 1, illustrated, the distribution plate 20 includes a through hole 90, preferably elongated, opposite the first end portion 32. Said through hole 90 is configured to allow the insertion of a second end portion 33, or second plug. The first and second end portions 32, 33 are preferably circular.

[0330] Thus, according to this fifth embodiment, the parts 211, 221 of the first and second sub-plates 210, 220 are fixed together by the link 24 and by the junction 25, the wall 31 of the bottle 30 also being closed, at a first longitudinal end of the bottle 30, by a first end portion 32, or first stopper, and at a second longitudinal end of the bottle 30, by a second end portion 33, or second stopper.

[0331] Indeed, in the embodiments of the heat treatment module 1 shown in Figures 2, 7, 8, and 9, the bottle 30 has a convex, or concave, shape at the longitudinal end of the bottle 30 opposite the first end portion 32. The through hole 90 thus improves and simplifies this manufacturing process by providing an additional degree of freedom to the distribution plate 20 during the manufacturing process. The distribution of mechanical stresses is thereby improved, reducing the risk of degradation of mechanical properties. The bottle 30 is thus formed from the portions 211 and 221 of the first and second sub-plates 210 and 220, in the form of two shells, each forming a half-cylinder. The first and second end portions 32 and 33 allow the bottle 30 to be closed at each of its longitudinal ends.

[0332] Advantageously, the wall 31 of the bottle 30 comprises the portions 211, 221 of the first and second sub-plates 210, 220 and the first end portion 32 and the second end portion 33, which are fixed together. This variant is particularly preferred because it simplifies the design and assembly of the heat treatment module 1 of the heat pump, while limiting its mass. At least the second end portion 33 and the sub-plates 210, 220 are fixed together using methods known to those skilled in the art, such as brazing or welding. According to a preferred embodiment of the invention, the first end portion 32, the second end portion 33, and the sub-plates 210, 220 are fixed together using methods known to those skilled in the art, such as brazing or welding.

[0333] In certain embodiments, and depending on the constraints of integration within the allocated volume on the vehicle, the shape of the distribution plates incorporating the cylinder can be modified. For example, as shown in Figures 2 to 8, the distribution plate (20) has at least one, or in particular two, different angles of extension. This allows, in particular, for managing the cylinder's footprint in relation to the heat exchangers.

[0334] Thus, in some embodiments, a portion of the distribution plate (20) has at least one angle, in particular two, the angle or angles being between 15° and 85°, preferably between 30° and 60°.

[0335] The formation of this angle or these angles is achieved in particular by bending, preferably after the brazing of the plates, which is carried out on the plates when they are generally flat in order to ensure a better quality brazing.

[0336] However, during the bending operation, the channels act as stiffeners and are deformed, which causes a reduction in the hydraulic cross-section and a thinning of the wall of said channels.

[0337] Surprisingly, the inventors found that reinforcing the channels in these areas of curvature made it possible to partially or even totally prevent the reduction of the hydraulic cross-section and the thinning of the channel walls.

[0338] Thus, in certain embodiments, as shown in Figures 12 and 13, the distribution plate includes curvature zones 28 delimiting at least a first portion and a second portion, the channels at the level of these curvature zones including channel reinforcement means 290.

[0339] In some embodiments, the distribution plate 20 includes, at the bending zones 28, orifices 291 in areas without channels, the orifices being configured to facilitate the bending of said distribution plate 20.

[0340] These openings, which can for example be made by cutting the plate or each plate as appropriate, advantageously facilitate the bending or folding of the plate by reducing the amount of material to be curved.

[0341] These 291 holes can, for example, have oblong shapes, some oblong shapes being able to have enlarged longitudinal ends as shown on the diagram in order to further simplify the folding step of the plate.

[0342] In some embodiments, as seen by way of example in the figure, the distribution plate includes at the bending areas 28 at least one, in particular a plurality of orifices 291 in channel areas, each orifice separating a channel into two parts, the module further comprising at least one pipe 292 having reinforcement means, in particular ridges, the pipe being assembled to the two parts of said channel in order to connect them in a watertight manner.

[0343] The assembly of these 292 pipes to the channel sections is preferably carried out by placing the pipes between the two plates of the distribution plate before these plates are welded, in particular by furnace brazing, to said pipes. This allows for a simple assembly and ensures a watertight connection.

[0344] According to a particular embodiment of the invention, the pipe(s) are made of aluminum, steel, or an aluminum-steel composite.

[0345] According to a particular embodiment of the invention, the pipe(s) are made by hydroforming.

[0346] According to a particular embodiment of the invention, the pipe(s) exhibit a lower resistance to deformation than the sub-plates.

[0347] According to a particular embodiment of the invention, the pipe(s) have grooves to facilitate their deformation during the folding or bending of the plate.

[0348] According to a particular embodiment of the invention, the means for reinforcing the channels are made before the bending of the distribution plate (20), preferably before the assembly of the two plates forming the distribution plate.

[0349] The present invention also relates to a method for manufacturing a module as described above, which comprises the following steps: - Supplying the flat sub-plates of the distribution plate, - Stamping to form the channels, with the formation during this step of grooves 290 to reinforce the channels in the areas of curvature, and optionally cutting the sub-plates in the areas of curvature to form holes to facilitate bending, - Brazing the plates together, including the reinforcing means, - Bending the distribution plate thus formed

[0350] The present invention also relates to a method of manufacturing a module as described above, which includes the following steps: - Supplying the flat sub-plates of the distribution plate, - Stamping to form the channels and cutting the sub-plates in the areas of curvature so as to form orifices at least in the channel areas, - Adding the pipes 291 at the orifices in each channel so as to connect the two parts of a channel, - Brazing the plates and the reinforcing means together.

[0351] In some embodiments, the process further includes an additional step of supplying and assembling at least one, preferably several, heat exchangers to the distribution plate before the brazing step.

[0352] This advantageously allows for a single soldering step for all the module components together.

[0353] The invention also relates to a heat treatment module 1 for a vehicle, in particular for an electric vehicle, said module comprising a bottle 30 formed at least partially by the distribution plate 20, this bottle comprising an end portion, also called a cap 32, closing said bottle 30, and a filtration assembly 320, the cap 32 being reversibly fixed to the bottle in order to close it and the filtration assembly being fixed to the cap.

[0354] This advantageously allows for the easy replacement of filtration components without having to change the entire bottle. This is particularly beneficial in the present invention, where the bottle is at least partially formed by the distribution plate of the heat treatment module, whereas completely replacing the bottle would entail replacing the entire module, potentially including several heat exchangers attached to it.

[0355] In some embodiments, the cap 32 is reversibly fixed to the bottle by screwing. Other suitable reversible fixing methods can be used without departing from the invention.

[0356] In some embodiments, as shown by way of example in the figure, the fluid inlet 401 and outlet 402 of the bottle 30 are formed by the integrated conduits 40 directly at the level of the wall of the bottle 30. In other words, the cap 32 does not have a fluid inlet or outlet.

[0357] In some embodiments, the filtration assembly 320 includes a rod 321 connected to the stopper 32 and extending inside the bottle, the rod 321 carrying at least one, preferably two, filter support(s) 322, in particular circular, each filter support 322 being configured to be in contact with the wall of the bottle 30 over its entire circumference, so as to achieve a tight contact at the point of contact.

[0358] Thus, in some embodiments, the filter support 322 has a circumference substantially equal to that of the inner wall of the bottle 30.

[0359] In some embodiments, the bottle wall includes a radial ridge or rib 301 configured to form a stop in contact with a filter support 322, in particular the filter support 322 furthest from the stopper, in order to allow easy and reliable sealing.

[0360] In embodiments where the rod 321 includes two filter supports 322, the filtration assembly 320 further includes desiccant 325, in particular desiccant beads 325, arranged between the two filter supports 322.

[0361] In some embodiments, each filter support 322 has orifices 323 to form a filter in combination with desiccant, in particular desiccant beads 325. Indeed, the orifices 323 allow the fluid to be filtered to pass through but not the desiccant, thus retaining the moisture present in the fluid.

[0362] The desiccant, in particular the desiccant beads, are thus blocked between the two filter supports and allow dehydration.

[0363] The invention thus allows for easy change of the desiccant, in particular the desiccant beads, by simply removing the cap 32 from the bottle 30 and replacing it with another cap 32 comprising a filtration assembly 320. This also makes it possible, during maintenance of the air conditioning loop, to reduce the cost of the "maintenance" function and to limit the risk of reintroducing moisture into the loop during vehicle maintenance operations.

[0364] A desiccant is understood to be a hygroscopic substance used to induce or maintain a state of dryness, that is to say, with little or no moisture.

[0365] Desiccant beads 325 can of course take different forms and be collected in a desiccant bag.

[0366] In some embodiments, as shown by way of example in the figure, the cap 32 is configured to allow a connection 326 to a desiccant filling / suction machine (not shown), in particular desiccant beads 325. The rod 321 is then hollow and includes at least one, preferably holes 324 located between the two filter supports 322 carried by the rod 321, the holes 324 of the rod 321 preferably being advantageously sized to add or remove desiccant, in particular desiccant beads 325.

[0367] In certain embodiments, as illustrated by way of example in the figure, the bottle formed by the walls of the heat treatment module further includes internal stiffening means (310) configured to balance the pressure stresses, the internal stiffening means comprising: - an internal cylindrical stiffening wall (311) extending longitudinally in the direction of extension of the longitudinal wall (31) of the bottle and parallel to it, so as to form an open cylinder internal to the bottle, - spacers (314) extending radially between the wall of the bottle and the internal stiffening wall so as to separate them, said spacers (314) comprising a first portion (312) and a second portion (313),the first portion (312) extending radially with respect to a central longitudinal axis (X) of the cylindrical inner wall and in a longitudinal direction parallel to said central longitudinal axis (X), from the internal stiffening wall (311) towards the bottle wall and so as to separate them, the second portion (313) extending radially with respect to the central longitudinal axis of the cylindrical inner wall (311) and perpendicular to the first portion (312), said first portion (312) extending from the cylindrical inner wall towards the central longitudinal axis of the cylindrical inner wall (311).

[0368] It is thus understood that the first portion (312) of each spacer (314) acts as a longitudinal spacer between the cylindrical inner wall and the longitudinal wall of the bottle, while the second portion (313) acts as a spacer between the cylindrical inner wall (311), in particular one of the ends of the cylindrical inner wall (311) and the bottom of the bottle.

[0369] We understand that the central longitudinal axis (X) of the cylindrical wall forming a cylinder, or axis of revolution when the cylinder is a cylinder of revolution, is parallel to the longitudinal axis of the bottle (30).

[0370] This design advantageously distributes pressure stresses across all cylindrical walls and struts, thereby stiffening the assembly without significantly reducing the bottle's capacity. These stresses are illustrated as an example in Figure 20A.

[0371] Figure 20B represents an embodiment of the stiffening means formed in one piece, for example by injection or molding.

[0372] In some embodiments, the first and second portions (312, 313) came from matter.

[0373] In certain embodiments, such as those shown in Figures 17A and 18, the interstitials (314) join at their second portion (313). In some of these embodiments, the junction occurs at the central longitudinal axis. The junction can then be planar or form a point. This is particularly the case when the stiffening means are formed by injection molding. In alternative embodiments, such as those shown by way of example in Figure 17B, the junction occurs at a theoretical circle centered on the aforementioned central longitudinal axis. This alternative is particularly preferred for brazing.

[0374] In some embodiments, the spacers (313) extend longitudinally over at least 80% of the length of the cylindrical inner wall, in particular extend over the entire length of the cylindrical inner wall.

[0375] In some embodiments, the second portion (313) is in contact with the wall forming the bottom of the bottle.

[0376] In some embodiments, the internal cylindrical stiffening wall (311) has windows (316), in particular circular or rectangular ones.

[0377] In some embodiments, such as those shown by way of example in Figure 19A, the internal stiffening means (310) are formed by a cylindrical wall (311) independent of its struts (314), the two being fixed to each other before or during their attachment to the bottle (31).

[0378] In some embodiments, such as those shown by way of example in Figure 19B, the cylindrical internal stiffening wall (311) is formed of a succession of several cylindrical strips (3111) connected to each other by the spacers (314).

[0379] In some embodiments in which the bottle includes internal stiffening means (310), the walls (31) of the bottle are cylindrical and circular.

[0380] In some embodiments in which the bottle includes internal stiffening means (310), the walls (31) of the bottle are cylindrical and include a change in section, for example having a ridge or a groove, the spacers (314) are configured to follow this change in section, for example by having a groove (315) or a ridge complementary to the shape of the walls (31) of the bottle.

[0381] In some embodiments, the internal stiffening means (310) and the walls of the bottle are formed from a single monobloc piece, in particular by injection or molding.

[0382] In the case of the present invention and these particular embodiments, the two plates of the module forming the walls of the bottle thus include the internal stiffening means (310). This advantageously allows the entire set of plates and the bottle with its stiffening means to be produced in a single operation, by injection or molding, using the open side of the bottle for the direction of injection or molding.

[0383] In some embodiments, the internal stiffening means (310) are formed from a single piece, in particular by molding, machining or injection.

[0384] In some embodiments, the internal stiffening means (310) are formed of a first part forming the cylindrical internal wall (311) and a plurality of second elements each forming a spacer (314).

[0385] In some embodiments, the internal stiffening means (310) are formed of a plurality of first elements each forming a part of the cylindrical internal wall (311), in particular a strip of the cylindrical internal wall (311), and a plurality of second elements each forming a spacer (314).

[0386] Figures 18A, 18B, 18C and 18D present different possible embodiments of the internal stiffening means (310), some of which include windows (316). These windows can be circular points (Figure 18B) or rectangular (Figure 18C) or separate different parts of the cylindrical stiffening wall (311) (Figure 18D).

Claims

Heat treatment module (1) for vehicle, in particular for electric vehicle, said module comprising: - a distribution plate (20) comprising a first face (21) and a second face (22), said distribution plate (20) forming, at least partially, a wall (31) of a bottle (30), in particular an accumulator or a desiccant bottle, said distribution plate (20) comprising first integrated conduits (40) configured to be put into fluidic communication with said bottle (30), - a first heat exchanger (50), attached to the first face (21), said module (1) being characterized in that it comprises a second heat exchanger (60), attached to the second face (22). Heat treatment module (1) according to the preceding claim, wherein the distribution plate (20) comprises a first sub-plate (210), forming the first face (21) of said distribution plate (20), and a second sub-plate (220), forming the second face (22) of said distribution plate (20), said first and second sub-plates (210, 220) being assembled together to form, at least partially, the wall (31) of the bottle (30), the first heat exchanger (50) being attached to the first sub-plate (210), the second heat exchanger (60) being attached to the second sub-plate (220). Heat treatment module (1) according to any one of the preceding claims, wherein the distribution plate (20) comprises at least one orifice (23), in particular a plurality of orifices (23), configured to put the first heat exchanger (50) into fluidic relationship with the second heat exchanger (60). Heat treatment module (1) according to any one of the preceding claims, wherein the first integrated conduits (40) are fluidly connected to the bottle (30). Heat treatment module (1) according to any one of the preceding claims, wherein the distribution plate (20) is configured to thermally insulate, at least partially, the first heat exchanger (50) from the second heat exchanger (60). Heat treatment module (1) according to any one of the preceding claims, wherein the module (1) comprises a third heat exchanger (70), at least partially attached to the second heat exchanger (60), the second heat exchanger (60) being interposed between the distribution plate (20) and the third heat exchanger (70), said first heat exchanger (50) being in particular directly fluidically connected to the first integrated conduits (40). Heat treatment module (1) according to any one of claims 1 to 5, wherein the module (1) comprises a third heat exchanger (70), at least partially attached to the first or second face (21, 22), said third heat exchanger (70) being in particular directly fluidically connected to the first integrated conduits (40). Heat treatment module (1) according to claim 7, wherein the distribution plate (20) comprises a first portion (26) and a second portion (27), the first heat exchanger (50) and the second heat exchanger (60) being attached to the first portion (26), said first portion (26) being at least partially intercalated between the first heat exchanger (50) and the second heat exchanger (60), the third heat exchanger (70) being attached to the second portion (27). Heat treatment module (1) according to the preceding claim, in which the first portion (26) and the second portion (27) of the distribution plate (20) extend on either side of the wall (31) bottle (30). Heat treatment module (1) according to any one of claims 7 to 9, wherein the module (1) comprises: - a plurality of first connectors (42) forming inlets and outlets of heat transfer fluid, said first connectors (42) being fluidically connected to a first circuit of heat transfer fluid, said first connectors (42) being attached to the first face (21) of the distribution plate (20) and / or to the first heat exchanger (50) and / or to the third heat exchanger (70), - a plurality of second connectors (43) forming inlets and outlets of refrigerant fluid, said second connectors (43) being fluidly connected to a second circuit of refrigerant fluid, said second connectors (43) being attached to the second face (22) of the distribution plate (20) and / or to the second heat exchanger (60) and / or to the third heat exchanger (70). Heat treatment module (1) according to any one of the preceding claims, wherein the module (1) comprises one or more third fluidic connectors (44) adapted to receive each a fluid expansion member (45), said third fluidic connectors (44) being attached to the first face (21) or to the second heat exchanger (60).

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