Thermal regulation device, in particular for a motor vehicle

Abstract

The invention relates to a non-return member comprising a valve body and a flap, wherein the flap (22) comprises a hinge (23) cooperating in a form-fitting and removable manner with a first part of the valve body so as to form the axis of rotation of the flap, the valve body being configured to be inserted into an element at least partially forming the fluid circulation path and to be removably attached to the element so that the hinge of the flap is sandwiched between the first part of the valve body and the element in order to prevent the hinge from coming out of the first part of the valve body with which it cooperates, while leaving it free to rotate about the axis of rotation.

Description

Description Title of the invention: THERMAL REGULATION DEVICE, PARTICULARLY FOR MOTOR VEHICLES

[0001] The present invention relates to a thermal regulation device, particularly in the automotive field. Such a device is generally intended to house a plurality of electrical and / or electronic components likely to generate heat during their operation.

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

[0003] The invention finds advantageous application in the field of thermal regulation of a power electronics device or module, that is to say, one comprising power electronic components. During operation, the temperature of such a power electronics device or module can rise, which risks damaging some of the power electronic components.

[0004] The invention also finds advantageous application in the field of thermal regulation of electrical energy storage elements, such as battery cells or a battery pack, for example, for electric and / or hybrid vehicles. The electrical energy of electric and / or hybrid vehicles is supplied by one or more batteries. During their operation, electrical energy storage elements such as batteries heat up and are thus at risk of damage. In particular, a charging technique known as fast charging consists of charging the energy storage elements under high voltage and high amperage in a short time, specifically within a maximum of about twenty minutes. This fast charging results in 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 device, particularly for cooling, of components such as electrical energy storage, such as batteries. Such a thermal regulation device makes it possible to modify the 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 charging operation of said system, by decreasing the temperature of the battery elements, which tend to heat up during their use.

[0006] According to a known solution, a cold plate through which a cooling fluid circulates is arranged in contact with the components to be cooled. However, it has been observed that such an arrangement can lead to uneven cooling of the components of the same device, for example, an electrical energy storage device, resulting in a decrease in overall performance.

[0007] According to another known thermal regulation solution, components housed in a package can be sprayed with a dielectric fluid and / or at least partially immersed in the dielectric fluid by means of a dielectric fluid circuit comprising channels through which the dielectric fluid can flow, as well as orifices or nozzles for spraying the dielectric fluid. Heat exchange can then occur between the components sprayed or immersed in the dielectric fluid. With this solution, it is advantageous to maintain a minimum level of dielectric fluid in the bottom of the package to ensure that the components housed in it are constantly at least partially immersed.

[0008] The housing can define several compartments in which the components can be arranged. To limit the volume of dielectric fluid required for thermal regulation of the components throughout the housing, the compartments can be supplied with dielectric fluid independently. The different compartments can connect to a common drain channel allowing the dielectric fluid to leave the thermal regulation device. Circulation of the dielectric fluid in the dielectric fluid circuit can be achieved using at least one pump.

[0009] Since the components are in direct contact with the dielectric fluid, after heat exchange between the components and the dielectric fluid, it may be necessary to empty at least one compartment containing components in a simple and quick manner.

[0010] Furthermore, under operating conditions, such as when the vehicle is in motion, the thermal management system installed in the vehicle may be inclined relative to the horizontal. Particularly in the case of prolonged incline, dielectric fluid may accumulate in the lowest compartments along the vehicle's vertical axis, for example, via the common drainage channel, while the highest compartments dry out. This results in uneven thermal regulation, such as cooling, across the different compartments, leading to temperature imbalances in the components. Areas of the components that are poorly or not at all cooled / immersed can lead to localized overheating, creating a fire hazard.

[0011] Furthermore, depending on the inclination, one or more channels of the dielectric fluid circuit may partially empty, unpriming the pump, so that the circulation of the dielectric fluid is stopped and consequently the thermal regulation.

[0012] The present invention aims to overcome at least partially one or more of the aforementioned drawbacks by proposing a thermal regulation device allowing easier management of the fluid in a fluid circulation circuit regardless of the cooling method, in particular to avoid an imbalance in the thermal regulation, such as the cooling, of the components.

[0013] To this end, the invention relates to a non-return device comprising a valve body including a space configured to form a fluid passage, the non-return device further comprising a flap configured to pivot about an axis of rotation R between a first closed position in which the flap blocks the fluid passage, and a second open position in which the flap allows the fluid to circulate in the fluid passage, in which the flap includes a hinge cooperating by complementary shape and in a removable manner with a first part of the valve body so as to form said axis of rotation of the flap,the valve body being configured to be inserted into an element forming at least partially the fluid flow path and to be removably fixed to said element so that the flap hinge is sandwiched between said first part of the valve body and said element in order to prevent said hinge from, exit from the first part of the valve body with which it cooperates, while leaving it free to rotate around said axis of rotation R.

[0014] Advantageously, this allows for a non-return device composed of only two elements removable from each other, without needing to fix them together, fixing the valve body to an element, for example an evacuation channel formed by the assembly of the base plate of a housing and a plate partially forming the evacuation channel being sufficient.

[0015] The term “fixed in a removable manner” refers to a reversible, non-destructive fixing.

[0016] According to one aspect of the invention, the valve body includes screw-fixing means to compress the first part of the valve body onto said element forming at least partially the fluid flow path.

[0017] According to one aspect of the invention, the first part of the valve body includes a complementary groove shaped to the hinge of the flap, and a shoulder configured to be in contact with said element when fixing the valve body to said element forming at least partially the fluid flow path.

[0018] According to one aspect of the invention, F shoulder of the first part of the valve body includes a seal, in particular a lip seal, configured to be compressed on said element forming at least partially the fluid flow path during said attachment.

[0019] According to one aspect of the invention, the flap is made of elastomer configured to deform in order to form a watertight seal when the flap is in the closed position.

[0020] According to an alternative aspect of the invention, the flap is made of plastic, overmolded at least partially in elastomer, the elastomer being configured to deform in order to form a tight seal when the flap is in the closed position.

[0021] According to one aspect of the invention, the shutter includes a mass enabling the shutter to return to the closed position by the action of gravity.

[0022] The invention also relates to a thermal regulation device for a predefined number of electronic and / or electrical components, particularly for motor vehicles, said device comprising a housing including at least one compartment configured to receive at least one electronic and / or electrical component, F at least a compartment being delimited at least by a bottom of casing, and a fluid circuit comprising at least one fluid circulation channel passing through an element forming a discharge channel opening onto F at least one compartment, the bottom of casing having at least one discharge orifice associated with F at least one compartment so as to allow communication with the discharge channel, characterized in that the discharge channel includes a drain orifice, in particular by gravity, the drain orifice being closed by said removable non-return device as described above, configured to allow or block the passage of fluid through the discharge channel, and to drain at least the compartment when said non-return device is removed.

[0023] According to one aspect of the invention, the flap is configured to pivot about the axis of rotation by the flow of fluid from a closed position of the collection channel to an open position of the collection channel.

[0024] Advantageously, this allows for a simple design of anti-return device, without an actuable motor or electronics, the said device acting passively without needing to be controlled.

[0025] According to one aspect of the invention, the drainage channel is formed by an additional plate fixed to the bottom of the casing.

[0026] According to one aspect of the invention, the space in the valve body configured to form a passage for a fluid has a shape complementary to the fluid flow path formed by the element.

[0027] According to one aspect of the invention, the non-return device is arranged to allow the flow of the dielectric fluid in a first direction, and to block the flow of the dielectric fluid in a second opposite direction.

[0028] In an alternative embodiment, the housing base includes a support configured to carry the predefined number of electronic and / or electrical components, assembled to a closing wall, delimiting at least one dielectric fluid collection channel between the support and the closing wall, and in which the non-return device is arranged in the collection channel.

[0029] According to one aspect of the invention, the flap of the anti-return device comprises at least one stiffening rib extending parallel to the extension direction of the flap hinge.

[0030] According to one aspect of the invention, the flap has an inclined slope relative to the bottom of the housing and descending towards the additional plate forming the evacuation channel, when the flap is in the closed position.

[0031] Conversely, in the open position, the flap can extend parallel or substantially parallel to the bottom of the housing.

[0032] According to the invention, the bottom of the case has at least one drain hole associated with at least one compartment so as to allow drainage by gravity, the drain hole being removably closed by the non-return device.

[0033] Thus, at least a partial draining can be carried out simply, for a given compartment or each compartment individually from one another.

[0034] The thermal regulation device may also include one or more of the following characteristics described below, taken separately or in combination.

[0035] By installing a non-return valve in each compartment, which closes off a drain port, a minimum amount of dielectric fluid can be retained in all compartments and channels of the dielectric fluid circuit. This non-return valve prevents the dielectric fluid from accidentally flowing into another compartment while still allowing the dielectric fluid to circulate, for example, to the pump for drainage away from the thermal control device.

[0036] The base of the case may include a support configured to carry the predefined number of electronic and / or electrical components, assembled to a closing wall, delimiting at least one channel for collecting the dielectric fluid between the support and the closing wall.

[0037] According to one example, the shutter has an inclined slope relative to the support and downwards towards the closing wall, when the shutter is in the closing position.

[0038] The invention may also relate to a battery pack forming a thermal regulation unit as defined above. The battery pack may comprise a predefined number of modules / rows of several interconnected cells.

[0039] Other advantages and features 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:

[0040] [Fig. 1] is a perspective view of a thermal regulation device comprising a housing configured to receive components to be thermally regulated according to a first embodiment.

[0041] [Fig. 2] shows a partial cross-sectional view of the device in Figure 1 with components.

[0042] [Fig. 3] is a schematic view of the element forming the dielectric fluid circulation channels according to a second embodiment.

[0043] [Fig. 4] is a detail of the view in figure 3.

[0044] [Fig. 5] is a schematic view of the element forming a dielectric fluid circulation channel according to a third embodiment.

[0045] [Fig. 6] shows a perspective view of a non-return device for closing an associated drain orifice in the bottom of the housing, fitted with a flap in assembled view (6A) or exploded view (6B).

[0046] [Fig. 7] is a detail of a view from below the bottom of the case including anti-return devices.

[0047] In these figures, identical elements bear the same reference numbers.

[0048] 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. Simple features of different embodiments can also be combined or interchanged to provide other embodiments, without departing from the scope of the invention as defined by the claims.

[0049] With reference to figure 1, the invention relates to a thermal regulation device 1 which can be intended to equip a vehicle, in particular a motor vehicle.

[0050] The thermal regulation device 1 may include a housing 3, for example of general parallelepiped shape.

[0051] The housing 3 may include a container 31 open on at least one side and a lid that closes the housing 3 when assembled with the container 31. The housing 3, In particular, container 31 has a base 35 opposite the lid when container 3 is closed. The base 35 and the lid are opposite each other.

[0052] The housing 3 may also include a predefined number of cross members 5, for example produced by extrusion.

[0053] Such cross members 5 extend for example from one edge of the housing 3 to an opposite edge of the housing 3.

[0054] The cross members 5 may have a longitudinal shape. Furthermore, the cross members 5 may extend lengthwise along the length of the housing 3, which is shown here to be a parallelepiped, as a non-limiting example. Specifically, the cross members 5 may extend along the entire length of the housing 3.

[0055] Alternatively, the cross members 5 can extend across the width of the parallelepiped-shaped housing 3. Specifically, the cross members 5 can extend across the entire width of the housing 3.

[0056] More clearly visible in Figure 2, the thermal regulation device 1, and more specifically the housing 3, is designed to house one or more electronic and / or electrical components 7 within the compartment(s) 4. These components 7 include those whose temperature must be regulated, for example, reduced. Depending on the option, the thermal regulation device 1 can house one or more modules containing the electronic and / or electrical component(s) 7. A module can also be defined as a container or housing comprising one or more electronic and / or electrical components 7.

[0057] The component(s) 7 or module(s) are supported by the case base 35.

[0058] By way of non-limiting example, the thermal regulation device 1 may be a battery pack comprising a plurality of energy storage cells, the temperature of which must be regulated. A component 7 may be an energy storage cell. The thermal regulation device 1 may comprise modules comprising several energy storage cells. Each module may be formed by a group of interconnected cells.

[0059] In the illustrated examples, the components or modules are represented schematically with a general parallelepiped shape. Of course, any other shape can be considered, including cylindrical.

[0060] The components 7 or modules can be arranged in one or more rows. These rows are advantageously arranged parallel to each other. One or more rows can be arranged in each compartment 4. A cross member 5 can extend across an entire row of components 7. When the assembly 1 comprises several rows of components 7 or modules, a cross member 5, in particular a fluid distribution cross member 5, can be arranged between two consecutive rows of components 7 or modules.

[0061] The temperature of the component(s) or module(s) can be thermally regulated by spraying dielectric fluid onto one or more surfaces of the component(s) or module(s). Alternatively, thermal regulation can be achieved by at least partial immersion of the component(s) or module(s) in a dielectric fluid bath. The dielectric fluid can be single-phase or two-phase. The latter is chosen, for example, based on its phase change temperatures.

[0062] Alternatively, the temperature of component(s) 7 or module(s) may be intended to be thermally regulated by indirect cooling using a cold plate (embody not shown).

[0063] In the case of immersion cooling using a two-phase dielectric fluid, when injected in liquid form, it tends to evaporate upon contact with components or modules that have, for example, heated up during operation. The vapor can then be cooled by a cooling circuit.

[0064] In the case of a single-phase dielectric fluid, once projected, particularly in liquid phase, the dielectric fluid can possibly be re-aspirated by a pump, for example, in order to be cooled before being reintroduced.

[0065] A dielectric fluid circuit 8, partially visible in Figure 1, is provided for this purpose. This circuit 8 includes at least one dielectric fluid circulation channel 9 opening into compartment 4 or an associated compartment.

[0066] A main supply channel 9 may be in fluidic communication with one or more circulation channels 9, which may be in bypass. At least some of the circulation channels 9 may extend in parallel.

[0067] Advantageously, at least one of the channels 9 can be integrated into the housing 3, in particular at the bottom of the housing 35.

[0068] A dielectric fluid inlet 10, configured to supply the dielectric fluid to the dielectric fluid circuit, may be provided. The housing 3, and in particular the housing base 35 or other wall of the container 31, incorporating the channels 9, may include this inlet 10. The main supply channel is in fluidic communication with the inlet.

[0069] The circulation channel(s) 9 allow the dielectric fluid to be conveyed so as to spray or immerse at least partially one or more components received in an associated compartment 4.

[0070] These circulation channels 9 can be in fluidic communication with at least some of the cross members 5, which can be configured to allow distribution of dielectric fluid within the housing 3. Such cross members are then called fluid distribution cross members 5. The circulation channels 9, particularly those outside the main supply channel, may have at least one angled portion to terminate under a fluid distribution cross member 5.

[0071] The dielectric fluid circuit also includes at least one collection channel 11 for the dielectric fluid provided in the bottom of the housing 35.

[0072] A main discharge channel 11 may be in fluidic communication with one or more collection channels 11, which may be branch channels. At least some of the collection channels 11 may extend parallel to each other. The collection channels 11 may be arranged between two consecutive cross members 5.

[0073] The collection channels 11 allow the dielectric fluid to be recovered after spraying or immersion at least in part of the component(s) 7 received in the respective compartments 4 and to flow into the evacuation channel 12.

[0074] A dielectric fluid outlet 12 configured to discharge the dielectric fluid to the outside of the housing 3 may be provided. Such an outlet may be formed in the housing 3, in particular in the bottom of the housing 35 or other wall of the container 31. The main discharge channel 12 is in fluidic communication with this outlet.

[0075] Furthermore, the base of the housing 35 also includes at least one drainage hole 15. A drainage hole 15 can be associated with each compartment 4.

[0076]

[0077] The non-return device 2, more clearly visible in figures 3, 4 and 6, also includes a flap and a valve body.

[0078] The flap of the non-return device 2 can be made of a more flexible plastic material than the plastic material used for the valve body.

[0079] The non-return device 2 is arranged so as to allow the flow of the dielectric fluid in a first direction A, and to block the flow of the dielectric fluid in a second direction opposite to the first direction A.

[0080] When the thermal regulation device 1, and more specifically the housing 3, comprises at least two separate compartments 4 which are advantageously sealed from each other, at least one non-return device 2 can be associated with each compartment 4, so that the non-return device(s) 2 associated with a compartment 4, which is for example lower than other compartment(s) 4 along a vertical axis V when the vehicle is in motion, prevent dielectric fluid from at least one other compartment 4 which would be higher along the vertical axis V, from flowing back towards the lower compartment 4.

[0081] According to the embodiment illustrated in figures 3 and 4, the non-return device 2 is arranged in an element 110 forming at least partially the fluid flow path, here a drain channel 11. For each compartment 4, at least one drain channel 11 can be provided, and for each drain channel 11 at least one drain port 15 and a corresponding non-return device 2 are provided.

[0082] The non-return device 2 notably has a valve body which is inserted into the drain orifice 15 by extending through the collection channel 11.

[0083] According to one example, the non-return device 2 includes at least one rotating movable element forming a flap 22.

[0084] The flap 22 of the non-return device 2 can be moved by pivoting around a pivot axis formed by the hinge 23, which forms an axis of rotation R. The pivoting can be caused by the flow of the dielectric fluid in the first direction A from a closed or blocked position of the discharge channel 11 to an open or unblocked position of the discharge channel 11. The flap 22 in the blocked position is shown in Figures 4 and 6. The flap 22 can, of course, take any intermediate position.

[0085] The flap 22 of the non-return device 2 extends primarily along a longitudinal direction. The width of the flap 22, in this example, extends along a transverse direction parallel to the pivot axis.

[0086] When the flap 22 is in the closed position, the flap 22 has, for example, an inclined slope relative to the bottom of the housing 35. This slope is downward towards the drainage channel 11. On the contrary, in the open position, the flap 22 can extend parallel or substantially parallel to the bottom of the housing 35.

[0087] Advantageously, the flap 22 is mounted removablely on the non-return device 2. This allows, for example, for the flap 22 to be replaced or changed independently of the non-return device 2, without having to change the non-return device 2 in its entirety, for example.

[0088] Similarly, and advantageously, the non-return device 2 is mounted removablely on channel 11, which allows it to be easily replaced without having to change the discharge channel 11 or even the housing 3.

[0089] As illustrated by way of example in figure 4, the groove 24 receiving the hinge 23 of the flap 22 has a shoulder 25, the groove and the shoulder together forming in particular a "C" shape, the hinge being sandwiched between the bottom of the housing 35 and the valve body 21 at the shoulder 25 which is in direct contact with the bottom of the housing 35.

[0090] Furthermore, as illustrated by way of example in Figure 6A and 6B (respectively when the flap 22 is assembled or not to the valve body 21), the flap 22 of the non-return member 2 may include a lip 220 which is compressed against the bottom of the housing 35, when the non-return member 2 closes the drain orifice 15. In an alternative embodiment, the lip 220 is carried by the valve body 21.

[0091] Figure 6B details the space 20 which is to be closed or not by the flap 22. This space can be shaped to follow the profile of the drainage channels 11.

[0092] Figure 3 presents an alternative embodiment, in which the element 110 forming the drainage channels 11 is formed of a plate linking said channels 11.

[0093] The evacuation channels 11 each encounter a non-return device, before joining a common main evacuation channel 11 connected to an evacuation outlet 12.

[0094] Thus, each non-return device 2 allows separate management of the fluid circulation in each of the discharge channels 11 respectively, and each device 2 can be removed individually.

[0095] Figure 5 represents another embodiment in which each drainage channel 11 is formed by a separate element 110.

[0096] Each drainage channel 11 includes a drain port 15 and fixing ports 27 to allow the insertion and fixing of the non-return device 2 in said channel 11.

[0097] Figure 7 shows the attachment of the non-return element 2 to the bottom wall of the housing 35, viewed from below. This illustrates how easily a non-return element can be removed individually by removing its fastening means 26, here by unscrewing, for example.

[0098] It should be noted that the feet shown in figures 3, 5 and 7 are totally optional and optional, and are independent of the present invention.

[0099] The thermal regulation device 1 may also include one or more elements or components necessary for the operation of the dielectric fluid circuit and the circulation of the dielectric fluid, not described in more detail, such as at least one pump, a heat exchanger.

[0100] Thus, for a respective compartment 4, the non-return device 2 can be removed so as to empty at least the dielectric fluid in the compartment 4 and in one or more of the channels in fluidic communication with this compartment 4. The non-return device(s) 2 can also allow the emptying of the entire circuit 8 of dielectric fluid and of all the compartments 4.

[0101] The non-return device 2 is accessible from the outside, in particular from below the thermal regulation device 1, and can be easily removed without dismantling other than its own fixing means 26.

[0102] The non-return device 2 allows a minimum of dielectric fluid to be retained in all compartments and channels of the dielectric fluid circuit, even in the event of inclination of the thermal regulation device 1, by preventing the dielectric fluid from accumulating in certain compartments, for example those lowest in relation to the vertical.

[0103] Furthermore, the non-return device 2 can be easily replaced, for example in case of wear or deterioration over time, without having to change the entire housing 3 if the rest of the housing 3 is still functional.

Claims

Demands

1. Non-return device (2) comprising a valve body (21) including a space (20) configured to form a fluid passage, the non-return device further comprising a flap (22) configured to pivot about an axis of rotation R between a first closed position in which the flap (22) blocks the fluid passage, and a second open position in which the flap (22) allows the fluid to circulate in the fluid passage, in which the flap (22) includes a hinge (23) cooperating by complementary shape and removably with a first part of the valve body (21) so as to form said axis of rotation of the flap (22),the valve body (21) being configured to be inserted into an element (110) forming at least partially the fluid flow path and to be removably fixed to said element (110) so that the hinge (23) of the flap (22) is sandwiched between said first part of the valve body (21) and said element (110) in order to prevent said hinge (23) from coming out of the first part of the valve body (21) with which it cooperates, while leaving it free to rotate about said axis of rotation R.,

2. Non-return device (2) according to the preceding claim, in which the valve body (21) includes screw-fixing means (26) so as to compress the first part of the valve body (21) on said element (110) forming at least partially the fluid flow path.

3. Non-return device (2) according to any one of the preceding claims, wherein the first part of the valve body (21) includes a groove (24) complementary in shape to the hinge (23) of the flap (22), and a shoulder (25) configured to be in contact with said element (110) when the valve body (21) is fixed, said element (110) forming at least partially the fluid flow path.

4. Non-return device (2) according to the preceding claim, wherein the shoulder (25) of the first part of the valve body (21) comprises a seal, in particular a lip seal, configured to be compressed onto said element (110) forming at least partially the fluid flow path during said fixing.

5. Non-return device (2) according to any one of the preceding claims, wherein the flap (22) is made of elastomer configured to deform in order to form a tight seal when the flap (22) is in the closed position.

6. Non-return device (2) according to any one of claims 1 to 4, wherein the flap (22) is made of plastic, overmolded at least partially in elastomer, the elastomer being configured to deform in order to form a tight seal when the flap (22) is in the closed position.

7. Non-return device (2) according to any one of the preceding claims, wherein the flap (22) includes a mass enabling the flap (22) to return to the closed position by the action of gravity.

8. A thermal regulation device (1) for a predefined number of electronic and / or electrical components (7), particularly for a motor vehicle, said device comprising: a housing (3) including at least one compartment (4) configured to receive at least one electronic and / or electrical component (7), F at least one compartment (4) being delimited at least by a housing base (35), and a fluid circuit (8) including at least one fluid circulation channel (9) passing through an element (110) forming a discharge channel (11) opening onto F at least one compartment (4), the housing base (35) including at least one discharge orifice associated with F at least one compartment (4) so ​​as to allow communication with the discharge channel (11), characterized in that the discharge channel (11) includes a drain orifice (15), in particular by gravity,the drain orifice (15) being closed by said removable non-return device (2) according to any one of the preceding claims, configured to permit or block the passage of fluid through the drain channel (11), and to drain at least the compartment when said non-return device (2) is removed.

9. Device according to the preceding claim, in which the discharge channel (11) is formed by an additional plate fixed to the bottom of the housing.

10. A thermal regulation device (1) for a predefined number of electronic and / or electrical components (7), in particular for a motor vehicle, said device comprising: a housing (3) comprising at least one compartment (4) configured to receive at least one electronic and / or electrical component (7), F at least one compartment (4) being delimited at least by a housing base (35), and a cooling plate comprising a fluid circuit (8) comprising at least one fluid circulation channel (9), characterized in that the cooling plate comprising at least one drain orifice, in particular by gravity, the drain orifice (15) being closed by said removable non-return device according to any one of claims 1 to 7, configured to permit or block the passage of fluid through the discharge channel (11), and to drain the plate when said non-return device is removed.

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