Thermal regulation device for components

Abstract

The invention relates to a thermal regulation device (2) for components (4), including: - a dielectric fluid flow channel (6), this channel (6) comprising at least one inlet and at least one dielectric fluid outlet (8, 10); - a separator (12) arranged to receive the components (4) such that these components (4) extend on either side of the separator (12), this separator (12) being configured to create at least two dielectric fluid flow stages (Eh, Eb), these stages being arranged such that the dielectric fluid entering through the inlet first passes through one of the stages which defines a section (26) of the channel (6), and then the other one of the stages which defines another section (26) of the channel (6) downstream of the preceding section (26), and the separator (12) comprises a free edge (27) so as to provide a fluid passage, in particular U-shaped, between the two stages.

Description

Description Title of the invention: Thermal regulation device for components [1] The invention relates to a thermal regulation device for components whose operation is sensitive to temperature, these components being in particular intended for energy storage and being able to be battery cells, in particular for vehicles. [2] The invention also relates to a module comprising such a thermal regulation device and said components placed in the thermal regulation device. [3] The invention further relates to a method for assembling such a module. [4] It is now common practice to equip electric, internal combustion, or hybrid vehicles with electrochemical and / or electronic and / or electrical components. In particular, an electrochemical component is a battery cell. Battery cells can be positioned in a battery pack, or a battery module. [5] Furthermore, it is known to install all or at least part of these battery packs at the level of the vehicle floor, substantially across the entire width of the vehicle. [6] It is understood that, during the operation of the vehicle, the battery packs can release a significant amount of heat, and therefore be subject to temperature increases which in some cases may cause them to be damaged or even destroyed. [7] Consequently, their cooling is essential to maintain them in good condition and thus ensure the vehicle's reliability, range, and performance. Furthermore, the operation of battery packs can be less efficient in low temperatures, as the electrical or electronic components equipping these battery packs then require a warm-up period before operating at full capacity. [8] To do this, we know of a thermal regulation device intended to regulate the temperature of the battery packs which is implemented to ensure the heating and / or cooling functions of the battery cells forming these battery packs and thus optimize the operation of these battery cells. [9] These thermal regulation devices are generally traversed by a heat transfer fluid, in particular a dielectric fluid, namely an electrically inert fluid, which can, depending on the needs, either absorb the heat emitted by each battery pack in order to cool it, or supply heat, if the temperature of the battery pack is insufficient for its proper functioning.

[0010] There is a need to improve the thermal regulation device to increase heat exchange between said components and the heat transfer fluid and to compensate for pressure losses in the heat transfer fluid.

[0011] The invention aims to address this need.

[0012] The present invention relates to a thermal regulation device for cooling and / or heating temperature-sensitive components, these components being intended in particular for energy storage and possibly being battery cells, said device comprising: - an enclosure defining a compartment configured to receive the components, - a dielectric fluid flow channel in this compartment, this channel comprising at least one inlet and at least one outlet of dielectric fluid, - a separator arranged to receive the components so that these components extend on either side of the separator, this separator being configured to create at least two stages of dielectric fluid flow, the separator being arranged so that the dielectric fluid entering through the inlet first flows through one of the stages which defines a section said canal, then the other of the stages which defines another section of said canal downstream of the previous section, and the separator has a free edge so as to provide a fluid passage, in particular in a U shape, between the two stages.

[0013] In the context of the present invention, the different stages are located at different heights when the thermal regulation device is mounted on the vehicle. The stages are thus in different vertical positions.

[0014] Thanks to the invention, the dielectric fluid can make two or more passes in contact with each of the components to be cooled, thereby increasing heat exchange between the components and the dielectric fluid. The invention thus allows for more efficient cooling or heating of the components.

[0015] According to one aspect of the invention, the stage which communicates with the dielectric fluid inlet is a high stage, namely the highest stage among all the stages.

[0016] According to one aspect of the invention, the stage which communicates with the dielectric fluid outlet is a low stage, namely the lowest stage among all the stages.

[0017] The fact that the fluid passes are at different levels, with a dielectric fluid flow from top to bottom while making one or more vertical turns, allows gravity to be used to compensate for pressure losses.

[0018] According to one aspect of the invention, the device includes a pump configured to force the flow of dielectric fluid.

[0019] According to another aspect of the invention, the stage which communicates with the dielectric fluid inlet is a low stage, namely the lowest stage among all the stages.

[0020] According to one aspect of the invention, the stage which communicates with the dielectric fluid outlet is a high stage, namely the highest stage among all the stages.

[0021] In this example of bottom-up flow implementation, a pump is provided to force the flow of dielectric fluid from bottom to top.

[0022] According to one aspect of the invention, the thermal regulation device comprises at least two separators, for example two or three separators, configured to provide at least three stages of dielectric fluid flow, and each separator has a free edge so as to provide a U-shaped fluid passage between two consecutive stages.

[0023] According to one aspect of the invention, the two consecutive separators are arranged alternately on the dielectric fluid flow channel.

[0024] According to one aspect of the invention, the separator includes openings configured each to receive a component.

[0025] Once placed in the opening, the component protrudes on each side of the separator.

[0026] According to one aspect of the invention, each opening has a circular contour.

[0027] According to one aspect of the invention, the openings are arranged in rows, in particular parallel rows.

[0028] According to one aspect of the invention, the separator has a generally flat shape.

[0029] According to one aspect of the invention, the separator has a plate shape.

[0030] According to one aspect of the invention, the separator is configured so that it can be placed substantially halfway up the component.

[0031] According to one aspect of the invention, the separator includes, for each opening, a sealing gasket for each component, this gasket being configured to apply itself to the component to seal the opening.

[0032] Thus, the seals on the separator prevent dielectric fluid from leaking through the separator, via the openings.

[0033] According to one aspect of the invention, the separator has a multilayer structure with two external layers and an internal layer forming a sealing joint.

[0034] According to one aspect of the invention, at least one of the outer layers may comprise at least one polymer material. The polymer material is a polyamide such as PA6 or PA66.

[0035] According to one aspect of the invention, the inner layer may comprise at least one polymer material. The polymer material is, in particular, an elastomer such as FKM. In an alternative embodiment, the separator comprises a single rigid layer and at least one sealing gasket.

[0036] According to an alternative embodiment, the separator comprises a single rigid layer.

[0037] According to one aspect of the invention, the inner layer is configured to come into contact with the component placed in the opening to ensure sealing.

[0038] According to one aspect of the invention, the separator has a multilayer structure with two external layers and an internal layer forming a sealing gasket, the internal layer being configured to come into contact with the component placed in the opening to ensure sealing.

[0039] According to one aspect of the invention, the separator comprises one or more dielectric fluid circulation orifices configured to allow the dielectric fluid to flow through the separator.

[0040] According to one aspect of the invention, the dielectric fluid circulation orifice(s) are placed in close proximity, in particular between, the openings receiving the components.

[0041] This reduces pressure losses while maintaining the desired cooling capacity. If an electric pump is used to circulate the heat transfer fluid, this also reduces the pump's power consumption.

[0042] According to one aspect of the invention, the separator has a number of openings for the components, a number which is at least equal to half the total number of components to be placed in the thermal regulation device.

[0043] According to one aspect of the invention, the housing defines with a bottom support the compartment configured to receive the components, the housing comprising a side wall and a cover connecting to the side wall.

[0044] According to one aspect of the invention, the side wall has an annular shape, namely that it follows a closed perimeter, for example this perimeter being geometrically inscribed in a rectangle.

[0045] According to one aspect of the invention, the compartment is delimited between two opposite faces of the side wall of the case, in particular two opposite vertical faces belonging to the side wall of the case, and one of the separators being contiguous with one of these faces and the other of the separators being contiguous with the other of these faces.

[0046] In other words, at least half of the components are inserted into the separator. The number of openings can be greater than 60% or 70% of the total number of components to be placed in the compartment. This number is preferably less than 80% or 90% of the total number of components.

[0047] According to one aspect of the invention, the side wall and the lid are made of a single piece, for example of plastic material.

[0048] According to one aspect of the invention, the side wall fits within a rectangular perimeter.

[0049] According to one aspect of the invention, the side wall includes a region for attaching the separator to the side wall.

[0050] This fixing area takes the form of a strip into which an edge of the separator is embedded.

[0051] The separator is, for example, attached to the side wall of the case during an overmolding of material onto the separator in order to form the side wall.

[0052] Alternatively, the separator can be in contact with the side wall without being attached to it.

[0053] According to one aspect of the invention, the separator may include flow disruptors. These disruptors are, for example, of the "dimples" type.

[0054] According to one aspect of the invention, the housing includes a dielectric fluid supply conduit communicating with the inlet of the dielectric fluid flow channel and a dielectric fluid outlet conduit communicating with the outlet of the dielectric fluid flow channel.

[0055] According to one aspect of the invention, the conduits are made as a single unit with the rest of the housing.

[0056] According to one aspect of the invention, the supply and discharge conduits for the dielectric fluid are arranged in parallel, in particular one above the other.

[0057] According to one aspect of the invention, the supply and discharge conduits for the dielectric fluid are arranged on one face of the side wall.

[0058] According to one aspect of the invention, the supply and discharge conduits for the dielectric fluid are open on the same side.

[0059] Thus, the pipes that connect to the conduits are placed on the same side, which allows for optimized space.

[0060] According to one aspect of the invention, the lid comprises, on its main external face, reinforcing reliefs, notably in the form of boxes.

[0061] According to one aspect of the invention, the lid comprises, on its main internal face facing the compartment, retaining reliefs configured to hold the components placed in the compartment.

[0062] According to one aspect of the invention, these retaining reliefs include studs, in particular made in one piece with the lid.

[0063] These pins are arranged in circular lines so as to be able to surround the top of the components, including battery cells.

[0064] According to one aspect of the invention, the components are cylindrical or prismatic shaped battery cells.

[0065] According to one aspect of the invention, the side wall has a shape that follows the contour of components to be placed in the compartment.

[0066] According to one aspect of the invention, the side wall comprises rounded undulations.

[0067] According to one aspect of the invention, the base support is configured to hold the components to be placed in the compartment.

[0068] According to one aspect of the invention, the base support includes housings to accommodate each of a component.

[0069] According to one aspect of the invention, each housing unit has a circular shape.

[0070] According to one aspect of the invention, the housings are formed by openings on a main wall of the base support.

[0071] According to one aspect of the invention, each housing includes a shoulder, in particular of annular shape, configured to serve as a stop for the component to be placed in that housing.

[0072] This stop is preferably sealed against dielectric fluid.

[0073] According to one aspect of the invention, each housing receives a sealing gasket configured to apply to the component to be placed in that housing.

[0074] According to one aspect of the invention, each component is inserted through the housing and then, at the end of the insertion stroke, the component comes to rest against this shoulder so that this component cannot cross the housing beyond a required position.

[0075] The components are thus held, at the bottom, by the base support, and, at the top, by these retaining features, for example in the form of small pins.

[0076] According to one aspect of the invention, each housing is provided with one or more slots around its perimeter to allow the passage of dielectric fluid

[0077] In this way, pressure losses due to the passage of the dielectric fluid through the housing are reduced.

[0078] According to one aspect of the invention, the base support includes a side wall connecting to the main wall which defines the housings.

[0079] According to one aspect of the invention, the bottom support is sealed by a bottom plate which is applied against the side wall of the bottom support.

[0080] According to one aspect of the invention, one or more conductive bars are placed in the space between the base plate and the base support.

[0081] This space between the base plate and the base support is preferably made sealed against the dielectric fluid, which is prevented from passing through the main wall of the base support.

[0082] According to one aspect of the invention, these conductive bars, also called "Busbars" in English, serve for the electrical connection of battery cells.

[0083] According to one aspect of the invention, the base plate has reliefs, for example in the form of studs, configured to apply the conductive bar(s) against the components.

[0084] According to one aspect of the invention, the components rest on these conductive bars, once these components are mounted on the thermal regulation device.

[0085] According to one aspect of the invention, the device includes an electrical connector configured to connect the set of conductive bars in contact with the components.

[0086] The invention further relates to a module comprising at least one thermal regulation device according to the invention, and components, in particular battery cells, placed in the thermal regulation device.

[0087] According to one aspect of the invention, the component includes an enlarged base configured to butt against the shoulder of the housing that receives this component.

[0088] The invention also relates to a method for assembling a module according to the invention, comprising the step of inserting the components into the housings, including openings, of a base support for the thermal regulation device.

[0089] This insertion is accomplished by passing the component through the opening until the enlarged base of the component abuts against the shoulder of the housing that receives it. Once these insertions are complete, the base plate is assembled with the base support, for example by gluing or welding.

[0090] The insertion of components, particularly battery cells, is thus carried out, in a way, from below the base support.

[0091] In the invention, the components, in particular the battery cells, are immersed in the dielectric fluid, at least to a certain height.

[0092] Other features and advantages of the invention will become clearer upon reading the following description, given by way of illustrative and non-limiting example, and the accompanying drawings, among which:

[0093] - [Figure 1] illustrates a schematic and perspective view of the thermal regulation device according to the invention;

[0094] - [Figure 2] illustrates a schematic and perspective view of the thermal regulation device according to the invention without the device housing;

[0095] - [Figure 3] shows a cross-sectional view of the thermal regulation device along axis AA of figure 1;

[0096] - [Figure 4] shows a cross-sectional view along axis BB of figure 1, in perspective, of the thermal regulation device;

[0097] - [Figure 5] shows a top view of the base support with the components;

[0098] - [Figure 6] shows a schematic cross-sectional view of the device of the invention with conductive bars;

[0099] - [Figure 7] shows a cross-sectional view of the device according to an alternative embodiment of the invention comprising two separators;

[0100] - [Figure 8] shows a cross-sectional view of the device according to an alternative embodiment of the invention comprising three separators;

[0101] - [Figure 9] shows a variant of the thermal regulation device of [Figure 3] with a separator having one or more orifices for the circulation of dielectric fluid.

[0102] The features, variations, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variations of the invention may include only a selection of features, described hereafter in isolation from the other features described, if this selection of features is sufficient to confer a technical advantage and / or to differentiate the invention from prior art.

[0103] In the description that follows, the terms "longitudinal", "transverse" and "vertical" refer to the orientation of a thermal regulation device according to the invention.

[0104] A longitudinal direction corresponds to the principal extension direction of a thermal control device, namely the direction of the device's greatest length. The transverse and vertical directions correspond to directions perpendicular to the longitudinal direction. These three directions—longitudinal, transverse, and vertical—form a trihedral triangle.

[0105] Figures 1 to 5 show a thermal regulation device 2 for the cooling and / or heating of temperature-sensitive components 4, these components 4 being cylindrical battery cells 4.

[0106] Device 2 includes:

[0107] - a dielectric fluid flow channel 6, this channel comprising a dielectric fluid inlet and outlet 8, 10,

[0108] - a separator 12 having a generally flat shape and having a plate shape, said separator 12 being arranged to receive the battery cells 4 such that these battery cells 4 extend on either side of the separator 12, this separator 12 being configured to create at least two stages of dielectric fluid flow.

[0109] The floor that communicates with the dielectric fluid inlet is a high floor Eh, namely the highest floor among all the floors.

[0110] The stage that communicates with the dielectric fluid outlet is a low stage Eb, namely the lowest stage among all the stages.

[0111] The separator 12 is arranged so that the dielectric fluid entering through the inlet 8 first passes through one of the stages Eh, Eb which defines a section of said channel 26, then the other of the stages which defines another section 26 of said channel downstream of the previous section 26, and the separator 12 has a free edge 27 so as to provide a fluid passage, in particular in U, between the two stages Eh, Eb.

[0112] The separator 12 is configured so that it can be placed approximately halfway up the battery cells 4.

[0113] In the context of the present invention, the different stages Eh, Eb are located at different heights when the thermal regulation device 2 is mounted on the vehicle (not shown). The stages Eh, Eb are thus in different vertical positions.

[0114] Thanks to the invention, the dielectric fluid can make two or more passes in contact with each of the battery cells to be cooled, thereby increasing heat exchange between the battery cells and the dielectric fluid. The fact that the fluid passes occur at different levels Eh, Eb, with a top-to-bottom flow of dielectric fluid Fh, Fb, making one or more vertical turns Fv, allows gravity to be used to compensate for charge losses. The invention thus enables more efficient cooling or heating of the battery cells.

[0115] With further reference to Figure 1, the thermal regulation device 2 includes a housing 30 defining with a base support 32 a compartment 34 configured to receive the battery cells 4.

[0116] The housing 30 further includes a side wall 36 and a cover 38 connecting to the side wall 36.

[0117] The housing 30 includes a dielectric fluid supply conduit 40 communicating with the inlet of the dielectric fluid flow channel 8 and a dielectric fluid evacuation conduit 42 communicating with the outlet of the dielectric fluid flow channel 10.

[0118] Conduits 40, 42 are made in one piece with the rest of the housing 30.

[0119] The dielectric fluid supply and discharge conduits 40, 42 are arranged parallel to each other, one above the other. These conduits 40, 42 are located on one face of the side wall 36 and are open on the same side.

[0120] Thus, the pipes (not shown) which connect to conduits 40, 42 are placed on the same side, which allows for optimized space.

[0121] The side wall 36 has an annular shape, meaning that it follows a closed perimeter. This closed perimeter is geometrically inscribed within a defined rectangle, for example by the cover 38 which has a substantially rectangular perimeter.

[0122] As illustrated in Figure 1, the side wall 36 has a shape that follows the contour of the battery cells 4 to be placed in the compartment 34. The side wall 36 includes rounded undulations.

[0123] The side wall 36 includes a fixing region 46 for the separator 12 on the side wall 36. This fixing region 46 is in the form of a strip in which an edge of the separator 12 is embedded.

[0124] With reference to figure 3, the separator 12 is joined to the side wall 36 of the housing 30 by overmolding material onto the separator 12 in order to form the side wall 36.

[0125] Alternatively, the separator 12 can be in contact with the side wall 36 without being attached to it.

[0126] Other means of fixing the separator 12 to the side wall 36 are conceivable, such as for example a notch in the side wall into which the separator 12 is inserted. The notch may include sealing means such as an elastic seal to form a watertight connection with the separator 12.

[0127] As can be seen in Figure 4, the side wall 36 and the cover 38 can be made from a single piece, for example from plastic material.

[0128] The lid 38 includes, on its main external face 50, reinforcing reliefs 52 in the form of boxes.

[0129] The cover 38 includes, on its main internal face 54 facing the compartment 60, retaining reliefs 70 configured to hold the battery cells 4 placed in the compartment 60.

[0130] These support reliefs 70 include studs made in one piece with the lid 38.

[0131] These pins 70 are arranged in circular lines so as to be able to surround the top 72 of the battery cells 4.

[0132] As illustrated in Figure 5, the bottom support 80 is configured to hold the battery cells 4 to be placed in compartment 60.

[0133] The base support 80 includes housings 82, each for a battery cell 4. Each housing 82 has, for example, a circular shape. In other alternative embodiments, the housings 82 have polygonal shapes, for example, hexagonal.

[0134] The housings 82 are formed by openings 84 on a main wall 86 of the base support 80. Each housing 82 includes a shoulder 88 of annular shape, configured to serve as a stop for the component 4 to be placed in this housing 82.

[0135] This stop 88 is sealed against dielectric fluid.

[0136] Each housing 82 can include a sealing gasket 90 configured to apply to the battery cell 4 which is to be placed in this housing 82.

[0137] The housing seal 90 includes notches 92.

[0138] The battery cells 4 each include an enlarged base 94 configured to butt against the shoulder 88 of the housing 82 which receives this cell 4.

[0139] Each cell 4 is inserted through the housing 90 and then, at the end of the insertion stroke, the cell 4 comes to rest against this shoulder 88 so that this cell 4 cannot cross the housing 90 beyond a required position.

[0140] The battery cells 4 are thus held, at the bottom, by the base support 80, and, at the top, by these retaining reliefs in the form of pins 70.

[0141] With reference to variants of figures 3 and 9, but including for other variants of the invention, all the battery cells 4 can be held at the bottom, by the base support 80, and, at the top, by these retaining reliefs in the form of pins 70.

[0142] Figure 4 makes particularly visible the fact that the separator 12 includes openings 100 having a circular contour, the openings 100 each being configured to receive a battery cell 4.

[0143] Once placed in the opening 100, the battery cell 4 protrudes on each side of the separator 12.

[0144] The 100 openings are arranged in parallel rows.

[0145] The separator 12 may include, for each opening 100, a sealing gasket 102 for each battery cell 4, this gasket 102 being configured to apply to the battery cell 4 to seal the opening 100.

[0146] Advantageously, the seals 102 on the separator 12 prevent leakage of dielectric fluid through the separator 12, through the openings 100.

[0147] The separator 12 may have a multilayer structure with two external layers 104 (and an internal layer 102 forming a sealing joint 102). In alternative embodiments not shown, the separator 12 comprises a single rigid layer, with or without additional joints.

[0148] The outer layers 104 may comprise a polymer material. The polymer material is a polyamide such as PA6 or PA66.

[0149] The inner layer 102 may comprise a polymer material. The polymer material is notably an elastomer such as FKM. In the case of a multilayer structure, the inner layer 102 is configured to press against the battery cell 4 placed in the opening 100 to ensure a seal.

[0150] As can be seen in Figure 3, the base support 80 includes a side wall 110 connecting to the main wall 86 which defines the housings.

[0151] Still in the example of figure 3, the bottom support 80 is sealed by a bottom plate 112 which is applied against the side wall 110 of the bottom support 80.

[0152] For illustration purposes, with reference to Figure 6, a conductive bar 116 is placed in the space between the base plate 112 and the base support 80.

[0153] This space between the base plate 112 and the base support 80 is preferably made sealed against the dielectric fluid, which is prevented from passing through the main wall of the base support 80.

[0154] This conductive bar 116, also called "Busbar" in English, serves for the electrical connection of the battery cells 4. The battery cells 4 further each include an orifice 117 arranged to be connected to the conductive bar 116.

[0155] The base plate 112 has raised features, for example in the form of studs, configured to apply the conductive bar(s) against the components.

[0156] The battery cells 4 come to rest on this conductive bar 116, once these battery cells 4 are mounted on the thermal regulation device 2.

[0157] As illustrated in Figure 1, device 2 includes an electrical connector 120 configured to connect the set of conductive bars in contact with the components.

[0158] In other alternative embodiments not shown, the conductive bar(s) 116 are located between the cover 38 and the cells 4.

[0159] Referring to figures 7 and 8 illustrating variants of the invention, it can be seen that the compartment 60 is delimited between the two opposite vertical faces 130, 132 belonging to the side wall 36 of the housing 30, and one of the dividers 12 being contiguous with one of these faces 130, 132 and the other of the dividers 12 being contiguous with the other of these faces 130, 132.

[0160] In the example in Figure 7, the thermal regulation device comprises two separators 12, configured to provide three stages of dielectric fluid flow E1, E2, E3, and each separator 12 has a free edge 27 in order to create a U-shaped fluid passage between two consecutive floors, namely between E1 and E2 or E2 and E3.

[0161] These two U-shaped bends form an S-shaped path between the supply and discharge conduits 40, 42.

[0162] The two consecutive separators 12 are arranged alternately on the dielectric fluid flow channel.

[0163] The variant of the invention in Figure 8 differs from that in Figure 7 in that the thermal regulation device 2 comprises three separators 12, configured to provide four stages of dielectric fluid flow, and in that the supply and discharge conduits 40, 42 are not arranged on the same face of the side wall.

[0164] In this variant of the embodiment illustrated in figure 8, we see that the separators 12 include flow perturbators 140. These perturbators 140 are for example of the type "dimples" in English.

[0165] Of course, whatever the variant of the invention, the separator(s) 12 may include flow disruptors 140.

[0166] Figure 9 illustrates an alternative embodiment of the invention as described previously with reference to Figure 3.

[0167] The separator 12 has several dielectric fluid circulation ports 150 configured to allow the dielectric fluid to flow through the separator 12.

[0168] These dielectric fluid circulation orifices 150 are placed close together between openings 100 receiving the battery cells 4.

[0169] In the case where an electric pump (not shown) is used to move the heat transfer fluid, this helps to reduce the electrical consumption of the pump.

[0170] In an unrepresented variant, the stage communicating with the dielectric fluid inlet is a low stage, namely the lowest stage among all the stages, and the stage communicating with the dielectric fluid outlet is a high stage, namely the highest stage among all the stages.

[0171] In this example of bottom-up flow implementation, a pump is provided to force the flow of dielectric fluid from bottom to top.

Claims

Claims

1. Thermal regulation device (2) for cooling and / or heating components (4) whose operation is sensitive to temperature, these components (4) being in particular intended for energy storage and possibly being battery cells (4), said device (2) comprising: - a housing (30) defining a compartment (60) configured to receive the components, - a dielectric fluid flow channel (6) in this compartment, this channel (6) comprising at least one dielectric fluid inlet and at least one dielectric fluid outlet (8, 10), - a separator (12) arranged to receive the components (4) so ​​that these components (4) extend on either side of the separator (12), this separator (12) being configured to create at least two stages of dielectric fluid flow (Eh, Eb), the separator being arranged so that the dielectric fluid entering through the inlet first passes through one of the stages (Eh, Eb) which defines a section (26) of said channel (6), then the other of the stages (Eh, Eb) which defines another section (26) of said channel (6) downstream of the previous section (26), and the separator (12) has a free edge (27) so as to provide a fluid passage, in particular a U-shape, between the two stages (Eh, Eb).

2. Device according to claim 1, comprising at least two separators (12), for example two or three separators (12), configured to provide at least three stages of dielectric fluid flow (E1, E2, E3), and each separator (12) has a free edge (27) so as to provide a U-shaped fluid passage between two consecutive stages.

3. Device according to claim 1 or 2, the separator further comprises (12) openings (100) each configured to receive a component (4).

4. Device according to claim 3, in which the separator (12) comprises, for each opening (100), a sealing gasket (102) for each component (4), this seal (102) being configured to be applied to the component (4) to seal the opening (100).

5. Device according to claim 4, in which the separator (12) has a multi-layer structure with two external layers (104) and an internal layer forming a seal (102), the internal layer (102) being configured to come into contact with the component (4) placed in the opening (100) to ensure sealing.

6. Device according to claim 3, in which the separator (12) comprises a single rigid layer and the at least one seal (102).

7. A device according to claim 3, wherein the separator (12) comprises a single rigid layer.

8. A device according to any preceding claim, wherein the separator (12) comprises one or more dielectric fluid circulation ports (150) configured to allow dielectric fluid to circulate through the separator (12).

9. Device according to claim 6, in which the dielectric fluid circulation orifice(s) (150) are placed close to, in particular between, openings (100) receiving the components (4).

10. A device according to any preceding claim, wherein the housing (30) defines with a bottom support (80) the compartment (60) configured to receive the components, the housing (30) comprising a side wall (36) and a cover (38) connecting to the side wall (36).

11. Device according to the preceding claim, in which the compartment (60) is delimited between two opposite faces (130, 132) of the side wall (36) of the housing (30), in particular two opposite vertical faces (130, 132) belonging to the side wall (36) of the housing (30), and one of the separators (12) being joined to one of these faces (130, 132) and the other of the separators (12) being joined to the other of these faces (130, 132).

12. Device according to claim 10 or 11, wherein the side wall (36) comprises a region (46) for fixing the separator (12) on the side wall (36).

13. Device according to one of claims 10 to 12, in which the cover (38) comprises, on its internal main face (54) facing the compartment (60), holding reliefs (70) configured to hold the components (4) placed in the compartment (60).

14. Device according to one of claims 10 to 13, in which the bottom support (80) comprises housings (82) for each housing a component (4).

15. Module comprising at least one thermal regulation device according to any one of the preceding claims, and components (4), in particular battery cells (4), placed in the thermal regulation device (2).

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