Thermal regulation device

Abstract

Title: Thermal Regulation Device The invention relates to a thermal regulation device (1) for the cooling and / or heating of at least one component (2) whose operation is sensitive to temperature, this component being in particular a power electronic module of an inverter or a battery cell, this thermal regulation device comprising a stack of at least three plates (14), in particular brazed together, within which is arranged a heat transfer fluid circuit (15), this thermal regulation device having an external face (10) on which one or more components (2) can be placed, for example a power electronic module,the heat transfer fluid circuit (15) comprising at least: a first section (17) of heat transfer fluid circulation provided with first flow perturbation elements (18) configured to promote heat transfer in a first flow rate range of the heat transfer fluid in this first section (17), and a second section (19) of heat transfer fluid circulation provided with second flow perturbation elements (20) to promote heat transfer in a second flow rate range of the heat transfer fluid in this second section (19). Figure for the abbreviation: Fig. 2,

Description

Title of the invention: Thermal regulation device

[0001] The present invention relates to a thermal regulation device for the cooling and / or heating of at least one component whose operation is sensitive to temperature, this component being in particular a power electronic module of an inverter or a battery cell.

[0002] In the context of automotive electrification, many electronic components are being developed or improved for higher power and duty cycles. Generally speaking, the electronics used are impacted by the quality of thermal management because electronic components have a maximum operating temperature. Consequently, there is a significant need to optimize the cooling of these electronic components in order to improve durability or reduce their associated costs. Examples of electronic components include components of a vehicle's electric motor, components of a DC-DC converter, an on-board charger, an inverter, etc.

[0003] For some of these components, the heat flux produced by these components is high due to their small surface areas (very small components). Furthermore, homogeneity of maximum temperatures is required between the various heat sources, namely the components.

[0004] In certain configurations, the components are arranged in series. For example, an electric machine and the associated inverter are arranged in series to optimize compactness (or packaging), but this arrangement generates constraints on temperature and minimum flow rate of a heat transfer fluid used to cool these components.

[0005] The components to be cooled are, for example, switching cell modules of an inverter. This type of component is temperature-sensitive and requires precise thermal management. To date, a thermal device with a copper base plate and machined pin-shaped cooling elements immersed in a flow of coolant has provided this thermal management. In this thermal device, the temperature is not homogeneous because the pin arrangement is the same along the entire length of the plate, imposing a constant heat transfer coefficient. Due to the natural heating of the fluid along the plate, the heat exchange capacity decreases and generates a non-homogeneous temperature profile across the components.

[0006] The present invention aims in particular to further improve the thermal regulation of components, in particular for cooling them, by proposing thermally efficient solutions with a simpler design and / or less expensive to manufacture.

[0007] The invention thus relates to a thermal regulation device for cooling and / or heating at least one temperature-sensitive component, this component being in particular a power electronic module of an inverter or a battery cell, this thermal regulation device comprising a stack of at least three plates, in particular brazed together, within which a heat transfer fluid circuit is arranged, this thermal regulation device having an external face on which one or more components can be placed, for example a power electronic module, the heat transfer fluid circuit comprising at least: - a first section of heat transfer fluid circulation equipped with initial fluid flow disturbance elements configured to promote heat transfer within a first flow rate range of the heat transfer fluid in this first section, and - a second section of heat transfer fluid circulation equipped with second flow disturbance elements to promote heat transfer in a second flow rate range of the heat transfer fluid in this second section, and the second disturbance elements (20) being configured to produce less pressure loss than the first disturbance elements (18) and the first and second segments being communicating.

[0008] The present invention is advantageous insofar as, for the different flow rate values ​​of the heat transfer fluid used during the operation of the thermal regulation device, it is possible to have satisfactory thermal performance.

[0009] In other words, the invention makes it possible to maintain good thermal performance over a wide range of heat transfer fluid flow rates.

[0010] In particular, the first circulation section with its first disturbance elements allows to offer good thermal performance in the first flow range while the second circulation section with its second disturbance elements allows to offer good thermal performance in the second flow range.

[0011] By choosing the two flow ranges so that they allow good thermal performance to be maintained over an overall range which is the sum of the first and second flow ranges, the invention makes it possible to have good thermal performance for the different operating modes that the thermal regulation device may experience.

[0012] This is particularly advantageous when the flow of fluid through the thermal control device is imposed, for example, by an electric motor which is to be cooled in series with the thermal control device.

[0013] Preferably, only one heat transfer fluid circulates in the thermal control device. The thermal control device is of the single-fluid type, and not a two-fluid type.

[0014] Thus we have a circulation of the same fluid in all the floors formed by the stacking of plates.

[0015] According to one aspect of the invention, the first flow range and the second flow range overlap so that, in the overlapping flow range, the thermal performance enabled by the first disturbance elements is substantially similar to the thermal performance made possible by the second disturbance elements.

[0016] Alternatively, the first and second disturbance elements are configured so that the first flow range is distant from the second flow range.

[0017] In this case, an intermediate range may appear between the first range and the second flow range, an intermediate range in which the thermal performance is reduced compared to the thermal performances allowed in the first flow range and in the second flow range.

[0018] According to one aspect of the invention, the fluid circuit comprises at least a first heat transfer fluid circulation stage and a second heat transfer fluid circulation stage, these first and second heat transfer fluid circulation stages being substantially parallel to the external face, and the first heat transfer fluid circulation stage being disposed between this external face and the second heat transfer fluid circulation stage.

[0019] According to one aspect of the invention, the first section extends over the first stage of heat transfer fluid circulation, and the first perturbation elements are configured to promote heat transfer in the first flow range which is lower than the second flow range.

[0020] The first flow rate range is lower than the second flow rate range in the sense that the flow rate values ​​in the first range are, at least for some, lower than the lowest flow rate in the second range. It should be noted that the first and second ranges may overlap or be separated by an intervening range.

[0021] Thus the first stage allows to promote thermal performance for lower flow rates while the second stage allows to promote thermal performance for higher flow rates than those of the first range.

[0022] According to one aspect of the invention, the fluid circulation takes place in parallel between the two stages, in particular according to a circulation perpendicular to the main longitudinal direction in which each plate of the device extends.

[0023] Parallel fluid circulation between floors is preferred to series circulation between floors, because the fluid balances itself according to the flow rate, and performance is optimized thanks to the two types of perturbators.

[0024] In one variant, the reverse can be done, namely the first section extends over the first stage of heat transfer fluid circulation, and the first perturbation elements are configured to favor heat transfer in the first flow range which is greater than the second flow range.

[0025] According to one aspect of the invention, the first disturbance elements in the first section, namely the section with the lower flow range, comprise fins between which the heat transfer fluid flows.

[0026] According to one aspect of the invention, the fins, in particular louvered fins, are formed on a corrugated structure with flanks that form the fins.

[0027] According to one aspect of the invention, the corrugated structure comprises a succession of identical undulations, in particular spaced from each other with a regular pitch.

[0028] Alternatively, the undulations of the corrugated structure can be spaced with a pitch that can vary between at least some of the undulations.

[0029] According to one aspect of the invention, the undulations alternately have rounded peaks and rounded valleys.

[0030] According to one aspect of the invention, the undulations are all parallel to each other.

[0031] According to one aspect of the invention, the undulations extend over the entire first floor.

[0032] According to one aspect of the invention, the first stage, or the second stage, comprises a fluid supply chamber and a fluid discharge chamber with which it communicates, and the fluid flows in the first stage between the fluid inlet chamber and the fluid outlet chamber.

[0033] According to one aspect of the invention, the fluid outlet chamber is arranged on a side opposite the fluid inlet chamber, in particular on longitudinal edges of the plates forming the stage.

[0034] According to one aspect of the invention, the fluid circuit comprises a heat transfer fluid distribution stage and / or a heat transfer fluid collection stage configured to distribute and / or collect fluid from the fluid circulation stages.

[0035] According to one aspect of the invention, the undulations of the corrugated structure extend from the inlet chamber to the outlet chamber.

[0036] In other words, the top lines and valley lines of the corrugated structure are substantially perpendicular to the fluid inlet and outlet chamber.

[0037] According to one aspect of the invention, the corrugated structure is made from a metal sheet, in particular an aluminum sheet.

[0038] According to one aspect of the invention, the sheet has been shaped to obtain the corrugated shape, for example using a forming machine.

[0039] The forming of the corrugations can be carried out by a roller or wheel (“Mechanical Packing Roll” in English).

[0040] According to one aspect of the invention, the fins comprise louvers providing lateral fluid passages through the fins allowing the fluid passing through the louver passages to distribute itself into spaces on either side of the louver.

[0041] This allows for a fluid distribution conducive to good thermal performance because the louvers act as a perturbator of the fluid flow.

[0042] According to one aspect of the invention, the corrugated structure has a height equal to the height of the first section so that the fins come into contact with two opposite faces of the first section. Instead of being louvered and corrugated, the fins can also be straight in the direction of flow.

[0043] The corrugated structure is part of the stack of plates.

[0044] According to one aspect of the invention, the second section extends over the second stage of heat transfer fluid circulation, and the second perturbation elements are configured to promote heat transfer in the second flow range which is greater than the first flow range.

[0045] According to one aspect of the invention, the second disturbance elements comprise shapes present on a wall of the second section.

[0046] According to one aspect of the invention, the height of these shapes is less than the height of the second section.

[0047] According to one aspect of the invention, the second perturbation elements are called "Dimples" in English.

[0048] According to one aspect of the invention, the second perturbation elements (or "dimples") are adapted to produce less pressure drop than the fins of the corrugated structure, thereby compensating for lower cooling efficiency at the point of contact with these second perturbation elements. The invention allows for a more compact and lighter thermal regulation device, since the corrugated structure can replace thicker plates used in known configurations.

[0049] According to one aspect of the invention, the second perturbation elements each have a free vertex, for example at mid-height of the second segment.

[0050] According to one aspect of the invention, the top of the second perturbation elements can be rounded.

[0051] According to one aspect of the invention, the base of at least one of the second disturbance elements has a circular, oblong, or polygonal perimeter, for example hexagonal.

[0052] According to one aspect of the invention, at least some of the second perturbation elements form a chevron, that is to say, two of these second perturbation elements are arranged so that they are arranged substantially like two branches of a V.

[0053] According to one aspect of the invention, these two branches of the V can touch each other or be at a distance from each other.

[0054] According to one aspect of the invention, the second disturbance elements are stamped shapes of a plate, in particular an aluminum plate.

[0055] According to one aspect of the invention, the stack of plates includes an intercalated plate between a corrugated structure and a plate which carries the second disturbance elements, for example, the intercalated plate is a flat distribution plate provided with fluid inlet and outlet ports.

[0056] According to one aspect of the invention, the stack of plates includes an interlayer plate between the corrugated structure and the plate that carries the second perturbation elements. For example, the interlayer plate is a flat distribution plate provided with fluid inlet and outlet ports. Alternatively, the interlayer plate is a stamped plate whose stamped shapes define second perturbation elements (such as "Dimples").

[0057] According to one aspect of the invention, the fluid inlet and outlet ports are in the collection chambers.

[0058] According to one aspect of the invention, the last section of fluid, for example the one which receives the corrugated structure, is in contact with a cover plate on the external face of which are formed the areas for placing the components to be cooled.

[0059] According to one aspect of the invention, the thermal regulation device comprises a collector base provided with at least one fluid inlet and outlet to be connected to external conduits.

[0060] According to one aspect of the invention, the collector base includes a distribution channel supplied by the fluid inlet and an evacuation channel connected to the fluid outlet.

[0061] According to one aspect of the invention, the distribution channel and the discharge channel each have a substantially triangular shape and are in particular symmetrical to each other by an axis of symmetry which extends along a diagonal of the collector base.

[0062] According to one aspect of the invention, the height of the first section is greater than the height of the second section, in particular at least two times, or even three times greater.

[0063] According to one aspect of the invention, the height is measured in the direction of the stacking of plates, and therefore globally perpendicular to the planes of the plates.

[0064] According to one aspect of the invention, the first section has a height of between 4 and 5 mm, in particular 4.5 mm. The pitch between the corrugations can be 1.25 mm. The material thickness at the corrugations is, for example, approximately 0.1 mm.

[0065] According to one aspect of the invention, the second section has a height of between 0.5 and 1.5 mm, in particular 1 mm. The height of the shapes of the second perturbation elements is approximately 0.35 mm.

[0066] Other features, details and advantages of the invention will become clearer upon reading the following description on the one hand, and several illustrative and non-limiting examples of embodiments given with reference to the accompanying schematic drawings on the other hand, in which:

[0067] [Fig-1] The [Fig. 1] is a perspective representation of a thermal regulation device according to the invention;

[0068] [Fig.2] Fig.2 is a cross-sectional and perspective view of the device thermal regulation of the [Fig.l];

[0069] [Fig.3] Fig.3 is a cross-sectional representation of the regulating device thermal of the [Fig.l], in the cutting plane;

[0070] [Fig.4] Fig.4 is a perspective representation of the collector base of the thermal regulation device of the [Fig.l];

[0071] [Fig. 5] Fig. 5 is a perspective representation of one of the plates of the thermal regulation device of the [Fig.l];

[0072] [Fig.6] Fig.6 is a perspective representation of another of the plates of the thermal regulation device of the [Fig.l].

[0073] The features, variants, and different embodiments of the invention can be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage and / or to differentiate the invention from the prior art.

[0074] Figures 1 and 2 show a thermal regulation device 1 for the cooling and / or heating of components 2 whose operation is sensitive to temperature.

[0075] As illustrated in Fig. 2, this thermal regulation device 1 is part of an assembly 100 which includes electronic components 2 placed on an external face 10 of the thermal regulation device 1 to be cooled by the fluid paths in the thermal regulation device 1. These components 2 are in particular electronic power modules of an inverter or battery cells.

[0076] This thermal regulation device 1 comprises a collector base 4 forming a base of the thermal regulation device 1, this collector base 4 having a longitudinal shape along the X direction. As shown in [Fig. 4], the collector base 4 has a fluid inlet port 5 and a fluid outlet port 6 configured to be connected respectively to an external fluid inlet pipe 8 and a fluid outlet pipe. This fluid inlet port 5 and this fluid outlet port 6 are arranged at two opposite ends along the X axis of the collector base 4.

[0077] In the example described, the thermal regulation device 1 comprises a stack of plates 14, here brazed together, within which a heat transfer fluid circuit 15 is arranged. The assembly has a generally rectangular perimeter.

[0078] The stack of plates 14 also includes the collector base 4 which therefore forms the lower plate of the stack, the lower plate through which the fluid connections are made.

[0079] The collector base 4 includes a distribution channel 41 supplied by the fluid inlet 5 and an evacuation channel 42 connected to the fluid outlet 6.

[0080] Here the distribution channel 41 and the evacuation channel 42 each have a substantially triangular shape and are in particular symmetrical to each other by an axis of symmetry which extends along a diagonal of the collector base 4, which has a substantially rectangular perimeter.

[0081] A cover plate 40 closes the stack of plates and defines the external face 10.

[0082] The plates 14, the cover plate 40 and the collector base 14 are for example made of metal, for example of aluminum.

[0083] The heat transfer fluid circuit 15 comprises at least: - a first section 17 of heat transfer fluid circulation provided with first flow disturbance elements 18 configured to promote heat transfer in a first flow rate range of the heat transfer fluid in this first section 17, and - a second section 19 of heat transfer fluid circulation provided with second elements 20 for perturbing the fluid flow to promote heat transfer in a second flow range of the heat transfer fluid in this second section 19.

[0084] The second disturbance elements 20 are configured to produce less pressure loss than the first disturbance elements 18 and the first and second sections 17 and 19 are communicating.

[0085] Only one heat transfer fluid circulates in the thermal regulation device 1. The thermal regulation device 1 is of the single-fluid type, and not a two-fluid type.

[0086] The first flow range and the second flow range overlap so that, in the overlap flow range, the thermal performance enabled by the first disturbance elements 18 is substantially similar to the thermal performance made possible by the second disturbance elements 20.

[0087] Alternatively, the first and second disturbance elements 18, 20 are configured so that the first flow range is distant from the second flow range.

[0088] In this case, an intermediate range may appear between the first range and the second flow range, an intermediate range in which the thermal performance is reduced compared to the thermal performances allowed in the first flow range and in the second flow range.

[0089] The fluid circuit 15 comprises at least a first stage El for circulating heat transfer fluid and a second stage E2 for circulating heat transfer fluid, these first and second stages El and E2 for circulating heat transfer fluid being substantially parallel to the external face 10, and the first stage El for circulating heat transfer fluid being disposed between this external face 10 and the second stage E2 for circulating heat transfer fluid.

[0090] As can be seen in [Fig.3], the first section 17 extends over the first stage El of heat transfer fluid circulation, and the first perturbation elements 18 are configured to favor heat transfer in the first flow range which is lower than the second flow range.

[0091] The first flow rate range is lower than the second flow rate range in the sense that the flow rate values ​​in the first range are, at least for some, lower than the lowest flow rate in the second range. It should be noted that the first and second ranges may overlap or be separated by an intervening range.

[0092] Thus the first stage El allows to promote thermal performance for lower flow rates while the second stage E2 allows to promote thermal performance for higher flow rates than those of the first range.

[0093] The fluid circulation takes place in parallel between the two stages El and E2, preferably in the same direction of flow F.

[0094] The first disturbance elements 18 in the first section 17, namely the section with lower flow rates, comprise fins 21 between which the heat transfer fluid flows.

[0095] The fins 21 are louvered and are formed on a corrugated structure 22, for example monobloc, with sides which form the fins 21.

[0096] The undulating structure 22 comprises a succession of identical undulations, spaced from each other with a regular pitch, as illustrated in Figures 3 and 6.

[0097] Alternatively, the undulations of the corrugated structure can be spaced with a pitch that can vary between at least some of the undulations.

[0098] The undulations alternately present rounded peaks 23 and rounded valleys 24.

[0099] The corrugated structure 22 extends over the entire first floor EL

[0100] The first stage El communicates with a fluid supply chamber 26 and with a fluid evacuation chamber 27, and the fluid flows in the first stage between the fluid inlet chamber and the fluid outlet chamber.

[0101] These chambers 26 and 27 define lateral collectors.

[0102] The fluid outlet chamber 27 is arranged on a side opposite the fluid inlet chamber 26.

[0103] The undulations of the corrugated structure 22 extend from the inlet chamber 26 to the outlet chamber 27.

[0104] In other words, the top lines and valley lines of the corrugated structure 22 are substantially perpendicular to the fluid inlet chamber 26 and outlet chamber 27.

[0105] The corrugated structure 22 is made from a metal sheet, in particular an aluminum sheet. The sheet has been shaped to obtain the corrugated form, for example using a forming machine. The corrugations can be formed by a roller or die (a "Mechanical Packing Roll").

[0106] The fins 21 have louvers providing lateral fluid passages through the fins allowing the fluid passing through the louver passages to be distributed into spaces on either side of the louver.

[0107] The corrugated structure 22 has a height equal to the height of the first section 17 so that the fins 21 come into contact with two opposite faces of the first section 17. Instead of being louvered and corrugated, the fins can also be straight in the direction of flow.

[0108] The second disturbance elements 20 include shapes present on a wall 29 of the second section 19.

[0109] The height of these shapes 20 is less than the height of the second segment 19. The second perturbation elements 20 are called "Dimples" in English, and are adapted to produce less pressure loss than the fins of the corrugated structure 22, which makes it possible to compensate for a lower cooling efficiency in contact with these second disturbance elements 20.

[0110] The second perturbation elements 20 each have a free apex, for example at mid-height of the second segment 19.

[0111] The apex of the second perturbation elements 20 can be rounded.

[0112] The base of the second perturbation elements 20 has a circular perimeter, oblong, or polygonal for example hexagonal.

[0113] In the example described, the second perturbation elements 20 form chevrons, that is to say that two of these second perturbation elements are arranged so that they are arranged substantially like two branches of a V.

[0114] These two branches of the V can touch each other or be at a distance from each other.

[0115] The second perturbation elements 20 are stamped shapes of a plate 14.

[0116] The stack of plates 14 includes an interlayer plate 31 between the corrugated structure 22 and the plate 14, which carries the second disturbance elements 20. Here, the interlayer plate 31 is a flat distribution plate provided with fluid inlet 32 ​​and fluid outlet 33 ports, as seen in [Fig. 2]. These fluid inlet 32 ​​and fluid outlet 33 ports are in the fluid supply chamber 26 and the fluid discharge chamber 27.

[0117] The corrugated structure 22 is in contact with the cover plate 40.

[0118] The height of the first section 17 is greater than the height of the second section 19, in particular at least two times, or even three times greater.

[0119] The height is measured in the Z direction of the plate stacking, and therefore globally perpendicular to the planes of the plates 14.

[0120] The first section 17 has a height of between 4 and 5 mm, in particular 4.5 mm. The pitch between the corrugations can be 1.25 mm. The material thickness at the corrugations is, for example, approximately 0.1 mm.

[0121] The second section 19 has a height between 0.5 and 1.5 mm, in particular 1 mm. The height of the shapes of the second perturbation elements is approximately 0.35 mm.

Claims

1. Demands Thermal control device (1) for cooling and / or heating at least one temperature-sensitive component (2), this component being in particular a power electronic module of an inverter or a battery cell, this thermal control device comprising a stack of at least three plates (14), in particular brazed together, within which a heat transfer fluid circuit (15) is arranged, this thermal control device having an external face (10) on which one or more components (2) can be placed, for example a power electronic module, the heat transfer fluid circuit (15) comprising at least: - a first section (17) of heat transfer fluid circulation provided with first disturbance elements (18) of the fluid flow configured to promote heat transfer in a first flow rate range of the heat transfer fluid in this first section (17), and - a second section (19) of heat transfer fluid circulation provided with second disturbance elements (20) of the fluid flow to promote heat transfer in a second flow range of the heat transfer fluid in this second section (19), and the second disturbance elements (20) being configured to produce less pressure loss than the first disturbance elements (18) and the first and second segments being communicating, the fluid circuit further comprising at least one first stage (E1) of heat transfer fluid circulation and one second stage (E2) of heat transfer fluid circulation, these first and second stages of heat transfer fluid circulation being substantially parallel to the external face, and the first stage (E1) of heat transfer fluid circulation being disposed between this external face and the second stage (E2) of heat transfer fluid circulation, the fluid circulation occurring in parallel between the two stages (E1, E2), in a flow perpendicular to the direction main longitudinal in which each plate of the device extends.

2. Thermal control device (1) according to the preceding claim, wherein the first flow range and the second flow range overlap such that, in the overlapping flow range, the thermal performance enabled by the first perturbation elements (18) is substantially similar to the thermal performance enabled by the second perturbation elements (20).

3. Thermal control device (1) according to claim 1, wherein the first and second disturbance elements (18, 20) are configured such that the first flow range is distant from the second flow range.

4. Thermal control device (1) according to claim 1, wherein the first section (17) extends over the first stage (El) of heat transfer fluid circulation, and the first perturbation elements (18) are configured to promote heat transfer in the first flow range which is lower than the second flow range.

5. Thermal control device (1) according to any one of claims 1 or 4, wherein the second section (19) extends over the second stage (E2) of heat transfer fluid circulation, and the second perturbation elements (20) are configured to promote heat transfer in the second flow range which is greater than the first flow range, the second perturbation elements (20) comprising in particular shapes present on a wall of the second section (19), in particular the height of these shapes being less than the height of the second section (19).

6. Thermal control device (1) according to any one of claims 1 or 4 to 5, wherein the first stage (El), or the second stage (E2), comprises a fluid supply chamber (26) and a fluid outlet chamber (27) with which it communicates, and the fluid flows into the first stage (El) between the fluid inlet chamber and the fluid outlet chamber.

7. Thermal regulation device (1) according to the preceding claim, wherein the fluid outlet chamber (27) is disposed on a side opposite the fluid inlet chamber (26), in particular on longitudinal edges of the plates forming the stage.

8. Thermal control device (1) according to any one of claims 1 or 4 to 5, wherein the fluid circuit comprises a heat transfer fluid distribution stage and / or a heat transfer fluid collection stage configured to distribute and / or collect fluid from the fluid circulation stages.

9. Thermal control device (1) according to any one of the preceding claims, wherein the first perturbation elements (18) in the first section (17), namely the section with the lower flow range, comprise fins (21) between which the heat transfer fluid flows, and the fins, in particular louvered fins, are in particular formed on a corrugated structure (22) with flanks which form the fins.

10. Thermal regulation device (1) according to the preceding claim, wherein the corrugated structure (22) comprises a succession of identical undulations, in particular spaced from each other with a regular pitch.

11. Thermal regulation device (1) according to any one of the preceding claims, wherein at least some of the second perturbation elements (20) form a chevron, i.e. that two of these second perturbation elements (20) are arranged so that they are arranged substantially like two branches of a V.

12. Thermal regulation device (1) according to any one of the preceding claims, wherein the stack of plates includes an interlayer plate (31) between a corrugated structure (22) and a plate which carries the second disturbance elements (20), for example, the interlayer plate is a flat distribution plate provided with fluid inlet (32) and outlet (33) ports.

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