Thermal control unit, in particular for a motor vehicle, and corresponding thermal control system

Abstract

The invention relates to a thermal control unit (3) defining a recess (9) for receiving at least two modules (5), each configured to comprise a plurality of components (7) to be thermally controlled, the unit (3) comprising at least two closure walls (19) of the module (5), each being configured to delimit an associated module (5). The unit (3) further comprises a fluid distribution device (11) comprising a wall (17) configured to be common to all the modules (5) and to which the closure walls (19) are attached, and at least one fluid distribution duct (13, 15) in which a dielectric fluid configured to thermally control each module (5) is intended to circulate. The invention also relates to a corresponding thermal control system (1).

Description

Description Title of the invention: Thermal regulation assembly, in particular for a motor vehicle, and corresponding thermal regulation system

[0001] The present invention relates to a thermal regulation assembly, particularly in the automotive field. Such an assembly generally defines a housing intended to receive modules of electrical and / or electronic components likely to release heat during their operation. The invention also relates to a thermal regulation system comprising such an assembly in which the modules of electrical and / or electronic components are housed.

[0002] The components that may be affected by the present invention may be electrical energy storage elements, in particular battery elements, or power electronics, for example, but not limited to, semiconductors, such as diodes or transistors. They could also be computer server components.

[0003] The invention finds an advantageous application in the field of thermal regulation of a power electronics device or module, i.e. comprising power electronic components. In operation, the temperature of such a power electronics device or module may rise, which risks damaging some of the power electronic components.

[0004] The invention also finds an advantageous application in the field of thermal regulation of electrical energy storage elements, such as battery cells or a battery pack, for example for a motor vehicle with an electric and / or hybrid engine. The electrical energy of vehicles with an electric and / or hybrid engine is supplied by one or more batteries. During their operation, the electrical energy storage elements such as the batteries are likely to heat up and thus risk being damaged. In particular, a charging technique, called rapid charging, consists of charging the energy storage elements under a high voltage and a high amperage, in a short time, in particular in a maximum time of around twenty minutes. This rapid charging involves significant heating of the electrical energy storage elements which must be treated.

[0005] In the field of motor vehicles, it is known to use a thermal regulation assembly, in particular for the cooling of components, for example for storing electrical energy, such as batteries. Such a thermal regulation assembly makes it possible to modify a temperature of an electrical energy storage device, for example when starting the vehicle in cold weather, by increasing its temperature for example, or whether during driving or during a recharging operation of said system, by reducing the temperature of the battery elements, which tend to heat up during their use.

[0006] According to a known solution, a dielectric fluid is sprayed onto the components received in a housing by means of a dielectric fluid circuit and orifices or nozzles for spraying the dielectric fluid. A heat exchange can then take place between the components and the dielectric fluid which comes into contact with a surface of the components. The dielectric fluid can be single-phase or two-phase. The latter is, for example, chosen according to its phase change temperatures.

[0007] Alternatively, components, such as electrical energy storage cells, are thermally regulated by immersion in a bath of dielectric fluid.

[0008] A constant problem concerns the integration of the dielectric fluid circuit by optimizing the quantity of dielectric fluid used while guaranteeing effective thermal regulation of all components.

[0009] For this purpose, instead of immersing all components such as cells for example, in a bath requiring a large quantity of dielectric fluid directly in a single tank, it has been proposed to distribute the components, such as cells, by module in clean tanks requiring less dielectric fluid to completely cover the cells.

[0010] These tanks, to be watertight, require respective boxes with covers and proper fixings in the thermal regulation assembly.

[0011] The invention falls within this context and aims to offer an alternative to known thermal regulation assemblies, in particular in their application to an electrical storage device such as motor vehicle batteries, which makes it possible, among other things, to overcome the aforementioned problems.

[0012] One objective is to propose a dielectric fluid circuit allowing the quantity of dielectric fluid to be optimized while guaranteeing effective thermal regulation.

[0013] Another objective is to limit the number of fasteners to be managed within the thermal regulation assembly while ensuring watertightness.

[0014] To this end, the subject of the invention is a thermal regulation assembly, in particular for a motor vehicle, defining a receiving housing configured to receive at least two modules, each module being configured to comprise a plurality of electronic and / or electrical components to be thermally regulated, said assembly comprising at least two module closing walls, each closing wall being configured to delimit an associated module.

[0015] According to the invention, said assembly further comprises a fluid distribution device comprising a wall configured to be common to all of the modules and on which the closing walls are fixed, the fluid distribution device comprising at least one fluid distribution conduit in which a dielectric fluid configured to thermally regulate each module is intended to circulate.

[0016] This allows to minimize the number of parts, assembly operations while guaranteeing spraying by the dielectric fluid or optimized immersion of the components when they are mounted in the thermal regulation assembly, in a minimal volume intended to be defined by each module for effective thermal regulation.

[0017] The thermal regulation assembly may further include one or more of the following features described below, taken separately or in combination.

[0018] The thermal regulation assembly comprises at least one seal arranged between the wall of the fluid distribution device and each closing wall.

[0019] The closing walls may comprise at least two respective channels in fluid communication with the fluid distribution conduit.

[0020] The dielectric fluid is intended to circulate in said channels.

[0021] Each channel can have a predefined number of dielectric fluid distribution ports.

[0022] According to an alternative embodiment, each closure wall may comprise at least one dielectric fluid spray nozzle arranged in fluid communication with at least one dispensing orifice. Said nozzle may be arranged so as to spray dielectric fluid towards at least one of said components of an associated module.

[0023] The wall of the fluid distribution device configured to be common to all modules may be flat. It can thus act as a bottom wall or a cover, depending on the orientation of the thermal regulation assembly.

[0024] The closure wall of the device has a U-shape configured to encompass a battery module when said closure wall is attached to the wall of the fluid dispensing device.

[0025] The wall of the fluid distribution device may be a bottom wall configured to be common to all of the modules and configured to be arranged at the bottom along a vertical axis of said assembly in the operating position of said assembly, in particular in the vehicle. Each closing wall may form a cover assembled to the bottom wall.

[0026] Alternatively, the wall of the fluid distribution device may be a cover configured to be common to all of the modules and configured to be arranged at the top along a vertical axis of said assembly in the operating position of said assembly, in particular in the vehicle. Each closing wall may form a bottom wall assembled to the cover.

[0027] The thermal regulation assembly may include a frame fixed to the wall of the fluid distribution device.

[0028] The frame can be configured to fix said assembly in particular in the vehicle.

[0029] The invention also relates to a thermal regulation system comprising at least one thermal regulation assembly as defined previously.

[0030] The thermal regulation system comprises at least two modules received in a receiving housing defined by the thermal regulation assembly. Each module comprises a plurality of electronic and / or electrical components to be thermally regulated.

[0031] Each module may include at least one spacer placed between two consecutive components.

[0032] Each module can be arranged in at least one row between the wall of the fluid distribution device common to all the modules and the associated closing wall.

[0033] Each module may comprise at least one flexible member arranged at one end of the row so as to compress said components when they are received in the module.

[0034] The invention may also relate to a battery pack forming a thermal regulation system as defined above. The battery pack may comprise a predefined number of modules of several cells connected together.

[0035] Alternatively, each module comprising several electronic and / or electrical components to be thermally regulated can form an energy storage cell, for example a battery pack.

[0036] Other advantages and characteristics of the invention will appear more clearly on reading the following description given by way of illustrative and non-limiting example, and the appended drawings among which:

[0037] [Fig. 1] is a partial sectional view of a thermal control system.

[0038] [Fig. 2] is an exploded view of the thermal control system of Figure 1.

[0039] In these figures, identical elements have the same reference numbers.

[0040] The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Single features of different embodiments may also be combined or interchanged to provide other embodiments, without departing from the scope of the invention, as defined by the claims.

[0041] In the description, certain elements can be indexed, for example first element or second element. In this case, it is a simple indexing to differentiate and name similar but not identical elements. This indexing does not imply a priority of one element over another and such names can easily be interchanged without departing from the scope of the present invention. This indexing also does not imply an order in time.

[0042] Thermal regulation system

[0043] Figures 1 and 2 show an example of a thermal regulation system 1 which may be intended to equip a vehicle, particularly a motor vehicle. By way of non-limiting example, the thermal regulation system 1 may be a battery pack.

[0044] The thermal regulation system 1 may define a general parallelepiped shape. In the remainder of the description, the longitudinal axis L, the vertical axis V and the transverse axis T indicated by the trihedron (L, V, T) are adopted without limitation. The longitudinal axis L corresponds to a main extension direction of the thermal control system 1. The transverse axis T corresponds to the width direction of the thermal control system 1. The vertical axis V and the transverse axis T are perpendicular to the longitudinal axis L and perpendicular to each other. The vertical axis V corresponds to a vertical axis of a vehicle, for example when the thermal control system 1 is installed in the operating position in this vehicle.

[0045] The thermal regulation system 1 comprises a thermal regulation assembly 3 in which at least two modules 5 are received.

[0046] Modules

[0047] The modules 5, when arranged within the thermal regulation system 1, can extend longitudinally in the width direction (transverse axis T) of the thermal regulation system 1.

[0048] Several rows of modules 5 may be intended to be received in the thermal regulation assembly 3. These rows of modules 5 are advantageously arranged parallel to each other. The rows of modules 5 may be aligned along the longitudinal axis L.

[0049] Each module 5 may comprise a plurality of electronic and / or electrical components 7, such as energy storage cells, the temperature of which must be regulated, for example reduced. A module 5 corresponds, for example, to a group of cells connected to each other.

[0050] Alternatively, each module 5 comprising a plurality of electronic and / or electrical components 7 may correspond to an energy storage cell.

[0051] In the illustrated examples, the components 7 are represented schematically with a general parallelepiped shape. Of course, any other shape can be envisaged.

[0052] The components 7 can be arranged in rows within a module 5.

[0053] The temperature of the components 7 may be intended to be thermally regulated by immersing the components 7 of each module 5 in a bath of dielectric fluid. Alternatively, the thermal regulation may be carried out by spraying dielectric fluid onto one or more surfaces of the components 7. The dielectric fluid may be single-phase or two-phase. The latter is, for example, chosen according to its phase change temperatures.

[0054] In addition, at least one spacer 8 can be arranged between two consecutive components 7 of a module 5. This makes it possible, in particular for a configuration of thermal regulation by immersion of the components 7, to guarantee that the dielectric fluid flows well between all the components 7.

[0055] Thermal regulation assembly

[0056] The thermal regulation assembly 3 defines a receiving housing 9. This receiving housing 9 is intended to receive the modules 5.

[0057] This thermal regulation assembly 3 makes it possible to use a dielectric fluid to thermally regulate the modules 5. To do this, the thermal regulation assembly 3 comprises a fluid distribution device 11.

[0058] The fluid distribution device 11 may have a longitudinal shape. It may extend mainly along the longitudinal axis L of the thermal regulation system 1.

[0059] The fluid distribution device 11 may comprise at least one fluid distribution conduit 13, 15, for example at least one fluid inlet conduit 13 and one drain conduit 15. The dielectric fluid is intended to circulate in the fluid distribution conduit(s) 13, 15.

[0060] The conduit(s) 13, 15 may be made in the form of tubes, for example metal.

[0061] The fluid distribution device 11 comprises in particular a wall 17 which is intended to be common to all of the modules 5 when they are arranged in the receiving housing 9. Such a wall 17 is hereinafter called a common wall 17.

[0062] According to a particular example, the fluid distribution device 11 may comprise two walls, for example in the form of plates, defining between them an intermediate volume in which the conduit(s) 13, 15 may be arranged. One of these walls may be the common wall 17. An additional wall 18 may be assembled to this common wall 17 to define between them the space in which the conduit(s) 13, 15 may be received. This assembly may be done by screwing.

[0063] The thermal regulation assembly 3 further comprises at least two module closing walls 19, i.e. one closing wall 19 for each module 5 that it is intended to receive. Each closing wall 19 is configured to delimit an associated module 5.

[0064] The closing walls 19 may optionally be made at least partly from a composite plastic material, advantageously heat-resistant.

[0065] The closing walls 19 are fixed to the common wall 17. The fixing can be done by screwing. Any other means of fixing can be considered. It is no longer necessary, as in previous solutions, to fix several module boxes, a single common wall 17 being fixed to all the closing walls 19, which requires fewer parts, fewer fixing elements, such as screws, and thus less assembly time.

[0066] At least one seal 20 is provided between the common wall 17 and each closing wall 19. When the assembly is carried out by screwing, by tightening the screws, the elements are held between the closing walls 19 and the common wall 17, and the seals 20 can be compressed, for example in the same operation.

[0067] Each closing wall 19 defines, by cooperation with the common wall 17, an internal volume within which an associated module 5 can be housed.

[0068] In the illustrated example, the common wall 17 is a common bottom or a common bottom wall. Each closing wall 19 then forms a separate cover for each module 5 intended to be received in the receiving housing 9.

[0069] Thus, the bottom wall of each module is removed according to the previous solutions, and a single common wall 17 serves as a floor and support for all the modules 5 when they are arranged in the thermal regulation assembly 3.

[0070] The common wall 17, forming a common bottom wall, is arranged on a lower side of the thermal regulation assembly 3, i.e. at the bottom along the vertical axis V, in the operating position of the thermal regulation system 1 when it is installed for example in the vehicle. The closing walls 19 forming covers are assembled to the common bottom wall 17 so as to close each module 5. They are therefore arranged at least in part on an upper side of the thermal regulation assembly 3, i.e. at the top along the vertical axis V, opposite the common wall 17. These are in particular upper covers along the vertical axis V. In this example, the additional wall 18 can form a lower cover along the vertical axis V.

[0071] Of course, this example is not limiting. According to another example not shown, the common wall 17 can form a common cover and each closing wall 19 can form a bottom wall for each module 5 intended to be received in the receiving housing 9.

[0072] In this case, the common wall 17 forming a common cover can be arranged on an upper side of the thermal regulation assembly 3, i.e. at the top, along the vertical axis V. The different closing walls forming bottom walls are then assembled to the common wall 17 forming a cover so as to close each module 5. The closing walls forming bottom walls are then arranged at least partly on the lower side, i.e. at the bottom, opposite the common wall forming a common cover.

[0073] Whatever the embodiment, in addition to the modules 5 intended to be arranged within the thermal regulation system 1, the closing walls 19 can extend longitudinally in the width direction (transverse axis T) of the thermal regulation system 1.

[0074] Each closing wall 19 may have a general shape of a container or tray open on at least one side, which is closed when the closing wall 19 is fixed to the common wall 17. Thus, in the operating position of the thermal regulation system 1, the closing wall 19 is comparable to / resembles an “inverted” or “turned over” tank (along the vertical axis V), compared to a module housing according to the prior art with a tray comprising a bottom on the lower side of the thermal regulation system, this housing being closed by a cover arranged opposite this bottom.

[0075] The closing wall 19 may have a circumference or a peripheral flange coming into contact with the common wall 17. Housings may be provided in this peripheral flange for the passage of fixing elements, such as screws for example when the fixing with the common wall 17 is not by screwing.

[0076] Each closing wall 19 has, for example, a “U” shape in cross section with two lateral branches connected by a central branch. The central branch is an upper part, opposite the common bottom wall, along the vertical axis V.

[0077] According to the particular example illustrated, each closing wall 19 may have a main face 191 intended to be opposite the common wall 17. This may be an upper or lower face along the vertical axis V depending on the case. This main face 191 connects four lateral faces, including two large lateral faces 192 and two small lateral faces 193. The main face 191 of each closing wall 19 and the common wall 17 are opposite along the vertical axis V.

[0078] Each closing wall 19 may have a foot or edge. This is, for example, a lateral edge at one or both of the small lateral faces 193.

[0079] Each closing wall 19 may comprise, in particular on this foot or edge, a connection or tapping 21 on a fluid distribution conduit 13, 15 for the arrival or drainage of the dielectric fluid. For example, the closing wall 19 may comprise a first connection or tapping 21 on the fluid arrival conduit 13 and a second connection or tapping 21 on the drainage conduit 15. The first connection or tapping 21 may form an inlet mouth for the arrival of the dielectric fluid. The second connection or tapping 21 may form an outlet mouth. for the evacuation of the dielectric fluid. The first connection or tapping 21 may be at a foot or edge of the closing wall 19 and the second connection or tapping 21 may be at the opposite foot or edge of this same closing plate 19.

[0080] The seal 20 can be maintained between a foot or edge of a closing wall 19 and the common wall 17, for example around the connection or tapping 21. The seal 20 can also be arranged between the entire peripheral periphery of the closing wall 19 and the common wall 17.

[0081] Furthermore, the closing walls 19 comprise at least two respective channels 23, 23' in which the dielectric fluid is intended to circulate. The channels 23, 23' have a shape complementary to that of the corresponding closing wall 19. In particular, they may follow at least in part the contour of the closing wall 19. For example, at least one of the channels 23, 23' may have an "L" shape with one branch longer than the other arranged on the main face 191 of the closing wall, and the smaller branch arranged on a small lateral face 193. The two channels 23, 23' may be produced identically.

[0082] The channels 23, 23' can be arranged on a corresponding closing wall 19 according to a central symmetry, so that by rotating the closing wall 19 by 180° around a vertical axis, its assembly is the same, thus avoiding orientation errors during assembly.

[0083] The channels 23, 23' can be attached and fixed to the closing walls 19, for example by being welded or glued.

[0084] Alternatively, at least one of the channels 23, 23' could be integrated into the corresponding closing wall 19. This can, according to one option, be achieved by overmolding, for example when the closing wall 19 is made of composite plastic material, in particular heat-resistant.

[0085] The channels 23, 23' are arranged in fluid communication with one or more distribution conduits 13, 15 of the common wall 17.

[0086] In particular, the closing walls 19 each comprise at least one dielectric fluid supply channel 23. The dielectric fluid supply channel 23 is in fluid communication with the fluid inlet conduit 13. This implementation fluid communication is carried out for example via the first connection or tapping 21. This makes it possible to bring the dielectric fluid circulating in the fluid inlet conduit 13 within the closing walls 19.

[0087] In addition, the closing walls 19 each comprise at least one evacuation channel 23'. The evacuation channel 23' is in fluid communication with the drain conduit 15. This fluid communication is carried out for example via the second connection or tapping 21. This makes it possible to evacuate the dielectric fluid having circulated within the closing walls 19 via the drain conduit 15.

[0088] The supply channels 23 and 23' of the discharge may extend at least partly in parallel.

[0089] In the example illustrated, the closing walls 19 each comprise two respective channels 23, 23'. Of course, this number is not limiting. According to an exemplary embodiment (not shown), the closing walls 19 may comprise at least two dielectric fluid supply channels and at least one discharge channel.

[0090] The two power supply channels are for example each arranged at the level or directly above connectors, an interconnection bar or a busbar allowing the components 7 of a module 5 to be connected to each other. For example, a space can be provided above the connectors to house the interconnection bars, which are elements subject to high thermal stress during operation.

[0091] The discharge channel can be arranged between the two supply channels, for example centrally. This is just an example. Any other design can be considered, for example with a central supply channel and two discharge channels opposite the interconnecting bars or busbars.

[0092] In addition, each channel 23, 23' has a predefined number of orifices 231 for distributing the dielectric fluid. The closing walls 19 comprise, for example, at least one series of fluid distribution orifices 231 for each module 5. The orifices 231 of a channel 23, 23' open into the internal volume defined by a corresponding module 5. These orifices 231 allow the flow or projection of the dielectric fluid to immerse or spray the components 7 of a module 5.

[0093] The supply channel 23 places the connection or tapping 21 on the fluid inlet conduit 13 and the distribution orifices 231 in fluid communication. Likewise, the evacuation channel 23' places the distribution orifices 231 and the connection or tapping 21 on the drain pipe 15 in fluid communication.

[0094] In operation, the dielectric fluid circulating in the fluid inlet conduit 13, shown diagrammatically by the arrows F, is conveyed, for example rises, through the supply channel(s) 23 of each module 5, and can fill the cavity or the internal volume of each module 5. The dielectric fluid having circulated between the components 7 of the module 5 can then be recovered at the level of the evacuation channel(s) 23' to be conveyed, via the drain conduit 15, out of the thermal regulation system 1.

[0095] According to another alternative embodiment (not shown), each closure wall 19 may comprise at least one dielectric fluid spray nozzle arranged in fluid communication with at least one fluid distribution orifice 231. Such a nozzle is also called a nozzle. Each closure wall 19 may comprise at least one series of spray nozzles for spraying the components 7 of an associated module 5.

[0096] The nozzle(s) may each comprise one or more orifices for projecting the dielectric fluid. They may be arranged so as to project and spray dielectric fluid onto at least one surface of at least one component 7 in a given module 5.

[0097] In operation, the nozzle(s) are supplied with dielectric fluid by the supply channel 23. The latter may be intended to fluidly supply several nozzles, for example at least one series of nozzles.

[0098] When there is a multiplicity of nozzles, they may be identical or different, have the same number of projection orifices or not, have projection orifices of the same opening area or not, for example of the same diameter or not. The nozzles may be arranged in an identical or substantially identical orientation, or in variable orientations, relative to the components 7 of each module 5.

[0099] Furthermore, for each module 5, at least one flexible member 25 may be provided. This flexible member 25 may be produced for example in the form of a spring wedge.

[0100] The flexible member 25 is arranged inside the volume defined between an associated closing wall 19 and the common wall 17. It can in particular be arranged to bear against an internal surface of the closing wall 19.

[0101] The flexible member 25 is intended to be arranged at one end of a row of components 7 in a given module 5. According to the embodiment described, this is in particular a longitudinal end of the row of components 7. The flexible member 25 can in particular be arranged against the internal surface of a small lateral face 193 of the closing wall 19 according to the example previously described.

[0102] For example, a flexible member 25 may be provided at each end of the row of components 7. Thus, at least two flexible members 25 may be associated with each module 5.

[0103] When the modules 5 are received within the thermal regulation assembly 3, the flexible members 25 make it possible to compress the components 7 of each module 5. The components 7 are thus kept tightly against each other. The flexible members 25 make it possible to absorb the differences in dimension of the components 7 during operation or under load, for example. Alternatively, foam elements could be considered.

[0104] Finally, a frame 27 may be provided to allow the thermal regulation assembly 3, or more generally the thermal regulation system 1, to be fixed, in particular in the vehicle.

[0105] The frame 27 can be arranged around the thermal regulation assembly 3. The frame 27 can be made at least partly in the form of a frame 271. This frame can surround all of the closing walls 19. The frame 27 can further comprise one or more partitions 273.

[0106] The frame 27 is fixed to the fluid distribution device 11, in particular to the common wall 17. This fixing can be done by screwing for example.

[0107] The thermal regulation system 1 may also include one or more elements or organs necessary for the circulation of the dielectric fluid and the thermal regulation of the modules 5.

[0108] Thus, in addition to the fluid conveying function, the fluid distribution device 11, in particular the common wall 17, can be used to support all the modules 5. The fluid distribution device 11 can also be used to fix the closing walls 19, for example by a set of screws.

[0109] Each row of components 7 forming a module 5 is intended to be received between a dedicated, clean closing wall 19, fixed to a wall 17 common to all the modules 5 of a dielectric fluid distribution device 11, which makes it possible to maintain the components 7 of a module 5 while allowing the circulation of the dielectric fluid to immerse or spray the components 7 in a minimum volume.

[0110] The dielectric fluid can be injected into the fluid inlet conduit 13 of the fluid distribution device 11. This dielectric fluid exits through the inlet tapping 21 of each closing wall 19 and travels into the or each supply channel 23. The dielectric fluid then flows through the distribution orifices 231 made in each supply channel 23 to spray the components 7 and / or fill each module 5 in order to immerse the components 7. The dielectric fluid charged with the calories of the components 7 can then be evacuated through other distribution orifices 231 made in each evacuation channel 23'. The dielectric fluid exits through the outlet tapping 21 and pours into the drain conduit 15 to exit from the thermal regulation system 1.

Claims

Claims

1. Thermal regulation assembly (3), in particular for a motor vehicle, defining a receiving housing (9) configured to receive at least two modules (5), each module (5) being configured to comprise a plurality of electronic and / or electrical components (7) to be thermally regulated, said assembly (3) comprising at least two module (5) closing walls (19), each closing wall (19) being configured to delimit an associated module (5), characterized in that said assembly (3) further comprises a fluid distribution device (11) comprising a wall (17) configured to be common to all the modules (5) and on which the closing walls (19) are fixed, the fluid distribution device (11) comprising at least one fluid distribution conduit (13, 15) in which a dielectric fluid configured to thermally regulate each module (5) is intended to circulate.

2. Thermal regulation assembly (3) according to the preceding claim, comprising at least one seal (20) arranged between the wall (17) of the fluid distribution device (11) and each closing wall (19).

3. Thermal regulation assembly (3) according to one of the preceding claims, in which the closing walls (19) comprise at least two respective channels (23, 23') in fluid communication with the fluid distribution conduit (13, 15), and in which the dielectric fluid is intended to circulate, each channel (23, 23') having a predefined number of distribution orifices (231) for the dielectric fluid.

4. Thermal regulation assembly (3) according to the preceding claim, in which each closing wall (19) comprises at least one dielectric fluid spray nozzle arranged in fluid communication with at least one distribution orifice (231).

5. Thermal regulation assembly (3) according to one of the preceding claims, in which the wall (17) of the fluid distribution device configured to be common to all of the modules can be flat.

6. Thermal regulation assembly (3) according to one of the preceding claims, wherein the closing wall (19) of the device has a U shape configured to encompass a battery module when said closing wall (19) is fixed to the wall (17) of the fluid distribution device.

7. Thermal regulation assembly (3) according to one of claims 1 to 4, in which the wall (17) of the fluid distribution device (11) is a bottom wall configured to be common to all of the modules (5) and configured to be arranged at the bottom along a vertical axis (V) of said assembly (3) in the operating position of said assembly (3) in particular in the vehicle, and each closing wall (19) forms a cover assembled to the bottom wall.

8. Thermal regulation assembly (3) according to one of claims 1 to 4, in which the wall (17) of the fluid distribution device (11) is a cover configured to be common to all of the modules (5) and configured to be arranged at the top along a vertical axis (V) of said assembly (3) in the operating position of said assembly (3) in particular in the vehicle, and each closing wall (19) forms a bottom wall assembled to the cover.

9. Thermal regulation assembly (3) according to one of the preceding claims, comprising a frame (27) fixed to the wall (17) of the fluid distribution device (11), and configured to fix said assembly (3) in particular in the vehicle.

10. Thermal regulation system (1) comprising at least one thermal regulation assembly (3) according to one of the preceding claims, and at least two modules (5) received in a reception housing (9) defined by the thermal regulation assembly (3), each module (5) comprising a plurality of electronic and / or electrical components (7) to be thermally regulated.

11. Thermal regulation system (1) according to the preceding claim, in which each module (5) comprises at least one spacer (8) arranged between two consecutive components (7).

12. Thermal regulation system (1) according to one of claims 8 or 9, in which each module (5) is arranged in at least one row between the wall (17) of the fluid distribution device (11) common to all the modules (5) and the associated closing wall (19), each module (5) comprising at least one flexible member (25) arranged at one end of the row so as to compress said components (7) when they are received in the module (5).

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