WO2020188435A1

WO2020188435A1 - Thermal regulation device

Info

Publication number: WO2020188435A1
Application number: PCT/IB2020/052297
Authority: WO
Inventors: Giorgio Girondi
Original assignee: Ufi Innovation Center S.R.L.
Priority date: 2019-03-15
Filing date: 2020-03-13
Publication date: 2020-09-24
Also published as: IT201900003811A1

Abstract

The invention is a thermal regulation device (1) of a battery pack (500) of an electrically powered and/or hybrid vehicle, having a substantially planar shape identifying a longitudinal axis (X-X), a transverse axis (Y-Y) and a vertical axis (V-V). The thermal regulation device (1) comprises an upper plate (2), an intermediate plate (3) and a lower plate (4). The thermal regulation device (1) comprises an operating cavity (5), defined between the upper plate (2) and the lower plate (4), in which the working fluid flows, wherein the intermediate plate (3) comprises a turbulator element (30) housed in the operating cavity (5). Said turbulator element (30) comprises at least a crest portion (31) engaging the upper plate (2) and at least a valley portion (32) engaging the lower plate (4) in such a way as to define in the operating cavity (5) a plurality of fluid passageways (300) in which the working fluid circulates.

Description

DESCRIPTION

"THERMAL REGULATION DEVICE"

Field of application

[0001] The present invention relates to a thermal regulation device. In particular, the present invention relates to a thermal regulation device of a battery pack of an electrically powered and/or hybrid vehicle. In addition, the present invention relates to an electric and/or hybrid power supply system of a vehicle comprising said thermal regulation device. In addition, the present invention relates to a production method of a thermal regulation device.

[0002] In particular, the present invention lies within the automotive sector.

[0003] The thermal regulation device of the present invention in fact finds specific application in a vehicle with an electric and/or hybrid power supply engageable (i.e. couplable) to a battery group to regulate and control the temperature thereof.

State of the art

[0004] In the prior art, solutions of thermal regulation devices couplable to a battery pack of a vehicle for regulating the temperature thereof by heat exchange are known. Depending on the operating conditions of the vehicle and the charging conditions, battery packs can be subject to high and sudden temperature variations that need to be managed and regulated by means of special thermal regulation devices in which working fluid flows, typically water and glycol: the battery packs are, in fact, coupled or mounted on said thermal regulation devices or vice versa.

[0005] In the currently known embodiments, such thermal regulation devices have a substantially planar shape, having their footprint only along two main directions and in such a way as to have two "faces" or two "sides", wherein on at least one face a battery pack is couplable or mountable.

[0006] One problem encountered in these thermal regulation devices is that they do not have an effective heat exchange in all their portions.

[0007] For example, solutions of thermal regulation devices having internal elements in the form of "dimples" are known of which limit the properties of heat exchange with the working fluid.

[0008] In addition, the known solutions of thermal regulation devices have particularly complex geometries and layouts, making their coupling with the battery packs complex .

[0009] One example of an embodiment of a prior thermal regulation device having such drawbacks is illustrated in the document DE102010051106B4.

Solution according to the invention

[0010] The need is therefore strongly felt to provide a thermal regulation device which solves the aforementioned problems .

[0011] The object of the present invention is to provide a thermal regulation device that has an effective heat exchange in all its portions, both with the battery and with the working fluid. At the same time said thermal regulation device has a geometry and a layout in which coupling with respective battery packs is favoured.

[0012] Such purpose is achieved by a thermal regulation device according to claim 1. In addition, such purpose is also achieved by the electric and/or hybrid power supply system comprising said thermal regulation device according to claim 11. In addition, such purpose is also achieved thanks to the production method a thermal regulation device according to claim 12. The claims dependent on these show preferred embodiments involving further advantageous aspects.

Description of the drawings

[0013] Further characteristics and advantages of the invention will, in any case, be evident from the description given below of its preferred embodiments made by way of a non-limiting example with reference to the appended drawings, wherein:

- figures la and lb show two perspective views respectively from above and below of the thermal regulation device according to the present invention, according to a preferred embodiment;

- figure 2 shows a perspective view in separate parts of the thermal regulation device shown in figures la and lb;

- figures 3a' and 3b' show two cross-section views of the thermal regulation device shown in figures la and lb, respectively along a longitudinal plane and along a transverse plane;

- figures 3a" and 3b" show two enlargements of figures 3a ' and 3b' ;

- figure 4 shows a perspective view in separate parts of a thermal regulation device, in a first step of the production method according to the present invention, according to a preferred embodiment;

- Figures 5', 5" and 5 show three front views respectively of an upper plate, an intermediate plate and a lower plate comprised in a thermal regulation device, in a first step of the production method according to the present invention, according to a preferred embodiment;

- figure 6 shows a schematic lateral view of an electric and/or hybrid power supply system according to a preferred embodiment. Detailed Description

[0014] With reference to the appended drawings, reference numeral 1 denotes a thermal regulation device according to the present invention.

[0015] In particular, the thermal regulation device 1 finds specific application coupled to a battery pack 500 of a vehicle with an electric and/or hybrid power supply.

[0016] The subject of the present invention is also an electric and/or hybrid power supply system 900 of a vehicle comprising a battery pack 500 and a thermal regulation device 1 according to the present invention. In said electrical and/or hybrid power supply system 900, the battery pack 500 is coupled to said thermal regulation device 1 in such a way that the latter regulates (controls) the temperature thereof by means of heat exchange. In other words, the transfer of thermal power from the batteries to the working fluid and/or vice versa is possible by coupling the battery pack 500 and the thermal regulation device 1.

[0017] It is to be emphasized that the shape of the battery pack in no way limits the object of the present invention, aside from any characteristics possibly described below.

[0018] According to the present invention, the thermal regulation device 1 has a substantially planar shape. [0019] In particular, the thermal regulation device 1 identifies a longitudinal axis X-X, a transverse axis Y-Y and a vertical axis V-V. Preferably, the longitudinal axis X-X and the transverse axis Y-Y lie on the same imaginary plane .

[0020] According to the present invention, the thermal regulation device 1 has its main extension along the longitudinal axis X-X and along the transverse axis Y-Y, while along the vertical axis V-V the thermal regulation device 1 extends in height .

[0021] In particular, the thermal regulation device 1 comprises a plurality of substantially planar elements. Preferably, said substantially planar elements are made from sheets subsequently machined.

[0022] Specifically, the thermal regulation device 1 comprises an upper plate 2, an intermediate plate 3 and a lower plate 4.

[0023] It is to be noted that the terms "upper" and "lower" are used for convenience, in accordance with the presently filed drawings showing a preferred embodiment of the thermal regulation device 1, wherein the upper plate 2 is positioned relative to the vertical axis V-V at a higher height than the lower plate 4. Preferably, the embodiment shown in the appended drawings is that according to which the thermal regulation device 1 is preferably positioned in the vehicle, i.e. under the battery pack 500. However, embodiments are also possible in which the thermal regulation device 1 is mounted in the opposite manner in the vehicle (above the battery pack 500) .

[0024] According to a preferred embodiment, the thermal regulation device 1 comprises an operating cavity 5 in which the working fluid flows.

[0025] Said operating cavity 5 is defined between the upper plate 2 and the lower plate 4. In particular, said operating cavity 5 is defined by the coupling of the two plates, i.e. by the presence, above, of the upper plate 2 and, below, of the lower plate 4.

[0026] Preferably, the upper plate 2 and the lower plate 4 are sealingly engaged with each other at the perimeter. Preferably, the upper plate 2 and the lower plate 4 are sealingly engaged with each other at respective upper perimeter edges 25 and lower perimeter edges 45.

[0027] According to a preferred embodiment, the upper plate 2 is substantially planar while the lower plate 4 comprises a shaped profile 40 with one or more bulges extending vertically such that the coupling between the upper plate 2 and the lower plate 4 defines the operating cavity 5. In other words, the operating cavity 5 corresponds to the inside of the shaped profile 40. [0028] According to a preferred embodiment, said shaped profile 40 corresponds to a single bulge. Preferably, said single bulge 40 is centred in the lower plate 4. Preferably, said single bulge is substantially square or rectangular in shape.

[0029] According to a preferred embodiment, the upper plate 2 extends over an imaginary plane in its entirety, while the lower plate 4 has the lower perimeter edges 45 lying on a first imaginary plane, while said shaped profile 40 lies essentially on a second imaginary plane parallel to the first imaginary plane.

[0030] According to a preferred embodiment, the intermediate plate 3 is sandwiched between the upper plate 2 and the lower plate 4. In particular, its intermediate perimeter edges 35 are sealingly engaged by the upper plate 2 to the lower plate 4.

[0031] According to a preferred embodiment, the intermediate plate 3 comprises a turbulator element 30 housed in the operating cavity 5 having the purpose of defining within the operating cavity 5 a plurality of fluid passageways 300 for the working fluid.

[0032] In particular, the turbulator element 30 extends in height parallel to the vertical axis V-V.

[0033] According to the present invention, in fact, the turbulator element 30 comprises at least one crest portion 31 which engages the upper plate 2 and at least one valley portion 32 which engages the lower plate 4.

[0034] Preferably, as shown in the appended drawings by way of example, and as described below, the turbulator element 30 comprises a plurality of crest portions 31 and a plurality of valley portions 32.

[0035] In other words, the presence of at least one crest portion 31 and at least one valley portion 32 divides the space defined inside the operating cavity 5, i.e. of the shaped profile 40. Preferably, the inside of the operating cavity 5, i.e., the inside of the shaped profile 40, delimits at least two fluid passageways 300.

[0036] In other words, the turbulator element 30 forces the flow of the working fluid, inside the operating cavity 5, in special fluid tracts 300.

[0037] According to a preferred embodiment, the turbulator element 30 is a portion of the specially shaped intermediate plate 3.

[0038] Preferably, said turbulator element 30 is surrounded at the perimeter by the intermediate perimeter edge 35.

[0039] Depending on the arrangement and shape of the crest portions 31 and the valley portions 32, the fluid passageways 300 and therefore the trajectory of the flowing working fluid are identified.

[0040] According to a preferred embodiment, the crest portions 31 and the valley portions 32 are arranged alternately along a first preferred direction, for example parallel to the transverse axis Y-Y.

[0041] According to a preferred embodiment, the crest portions 31 and the valley portions 32 are also alternately arranged along a second preferred direction, for example parallel to the longitudinal axis X-X.

[0042] Preferably, then, the turbulator element 30 identifies inside the operating cavity 5 a series of fluid passageways 300 in the form of series of fluid tracts with a matrix arrangement. Preferably, said fluidic tracts 300 are evenly arranged throughout the entire space of the operating cavity 5. Preferably, the working fluid flows between the inlet and the outlet filling the operating cavity 5 in a substantially homogeneous manner by flowing fluidly through the fluid portions 300 defined by alternating, both in a first direction and in a second direction, the crest portions 31 and the valley portions 32.

[0043] According to a preferred embodiment, the working fluid flows between the inlet and outlet, filling the operating cavity 5 such that the direction of fluid flow is essentially constant.

[0044] According to an embodiment variant the crest portions 31 and the valley portions 32 are arranged in a predefined manner along a second preferred direction, for example parallel to the longitudinal axis X-X, so as to identify fluid passageways 300 distributed inside the operating cavity 5. Preferably the operating cavity 5, and in particular the shaped profile 40, are substantially shaped as a main duct, divided into respective ducts (or secondary ducts) .

[0045] Preferably, then in some preferred embodiments, the turbulator element 30 identifies suitable fluid passageways 300 having a preferred shape and extension. In other words, the turbulator element 30 divides the "main duct" defined by the operating cavity 5 into a plurality of respective ducts. In other words, preferably, the crest portions 31 and the valley portions 32 are arranged in such a way as to define inside the operating cavity 5 special ducts, suitable for defining special working fluid trajectories. In other words, the crest portions 31 and the valley portions 32 are arranged so as to define inside the cavity, specific fluid ducts between the fluid inlet and the outlet.

[0046] According to a preferred embodiment, the operating cavity 5 forms a duct comprising at least two circulation sections (or at least two ducts) in which the flow is reciprocally in counterflow.

[0047] Preferably, the operating cavity 5 forms a U-duct and/or coil-shaped duct (i.e. a main duct) . Preferably, the crest portions 31 and the valley portions 32 are arranged in such a way as to define within the operating cavity 5 special fluid passageways 300, i.e. secondary ducts, suitable for defining special trajectories that follow the direction of circulation defined by the profile of the operating cavity 5.

[0048] According to a preferred embodiment, the upper plate 2 and the lower plate 4 are composed of respective sheets of material. Preferably, said sheets are made of a material with a different resistance to elongation at break .

[0049] According to a preferred embodiment, the lower plate 4 is made of a material having an elongation at break greater than 10%, preferably greater than 20%.

[0050] Preferably, the lower plate 4 is made of a material having a greater elongation at break than the elongation at break of the material of the upper plate 2.

[0051] According to a preferred embodiment, the intermediate plate 3 is also made of a sheet of material. Preferably, the intermediate plate 3 is also made of a material having a greater elongation at break than the elongation at break of the material of the upper plate 2.

[0052] According to a preferred embodiment, the sheet of the upper plate 2 is thicker than that of the lower plate 4.

[0053] According to a preferred embodiment, the sheet of the lower plate 4 is thicker than that of the intermediate plate 3.

[0054] According to a preferred embodiment, the upper plate

2, the intermediate plate 3 and the lower plate 4 are made of metal. Preferably, the upper plate 2, the intermediate plate 3 and the lower plate 4 consist of aluminium (or aluminium alloy) sheets.

[0055] According to a preferred embodiment, the lower plate

4 is made of an aluminium alloy having a greater elongation at break than the aluminium alloy of the upper plate 2.

[0056] According to a preferred embodiment, the upper plate 2, the intermediate plate 3 and the lower plate 4 are made of metal sheets of different thicknesses.

[0057] According to a preferred embodiment, the upper plate 2, the intermediate plate 3 and the lower plate 4 consist of machined sheets.

[0058] According to a preferred embodiment, the upper plate

2 has a thickness between 1 and 2 millimetres, preferably the upper plate 2 has a thickness between 1.2 and 1.5 millimetres .

[0059] According to a preferred embodiment, the upper plate 2 is series 5000 aluminium alloy. [0060] According to a preferred embodiment, the lower plate 4 has a thickness between 0.5 and 1 mm, preferably the lower plate 4 has a thickness between 0.6 and 0.8 mm.

[0061] According to a preferred embodiment, the lower plate 4 is series 1000 aluminium alloy.

[0062] According to a preferred embodiment, the intermediate plate 3 has a thickness between 0.3 and 1 millimetre, preferably the intermediate plate 3 has a thickness between 0.3 and 0.5 millimetres.

[0063] According to a preferred embodiment, the intermediate plate 3 is made aluminium alloy. According to some embodiment variants, the intermediate plate 3 is in the same aluminium alloy as the lower plate 4.

[0064] According to a preferred embodiment, the thermal regulation device 1 comprises a fluid inlet connector and a fluid outlet connector fluidly connected to the operating cavity 5 through which the working fluid flows in and out. Preferably said fluid inlet connector and said fluid outlet connector are positioned mutually spaced axially, preferably along the longitudinal axis X- X and/or along the transverse axis Y-Y. In any case, the present invention is not limited to the shapes and particular positions of the fluid inlet connectors and the fluid outlet connectors.

[0065] Depending on the position of the fluid inlet connector and the fluid outlet connector, the operating cavity 5 (and therefore the shaped profile 40) is specially shaped and the turbulator element 30 is specially provided and arranged in such a way as to ensure the flow of the working fluid between the inlet and the outlet.

[0066] According to a preferred embodiment, the upper plate 2, the intermediate plate 3 and the lower plate 4 are made and mutually joined and plastically modified by means of "roll bonding" and blowing operations. In other words, starting from the sheets of material said three sheets are first rolled, preferably at a suitable temperature, and secondly they are subjected to an air blowing operation, preferably at high pressure. Preferably, the blowing operations modify the shape of the intermediate and lower sheets to obtain the above- described characteristics.

[0067] Preferably, the rolling operations are performed at a temperature of about 450 °C.

[0068] Preferably, the air is blown at a pressure of about

150bar .

[0069] According to the present invention, in order to obtain a turbulator element 30 with the characteristics described above, before the rolling operations, one or more sheets (or plates) are subjected to masking operations, in which special layers of anti-bonding material are deposited, the shape of which is suitable to allow or prevent bonding in some points between the intermediate plate 3 and the upper plate 2 or between the intermediate plate 3 and the lower plate 4. The specific shape (intended as a distribution pattern) of said layers of anti-bonding material thus allows contact portions to be created between the plates which correspond to the junction portions such as the crest portions 31 and the valley portions 32 and to the peripheral portions once the production method is complete.

[0070] The present invention also relates to an electric and/or hybrid power supply system 900 of a vehicle comprising a thermal regulation device 1 and a battery pack 500 engaged to the thermal regulation device 1, preferably to the upper plate 2 thereof. Preferably, the battery pack 500 has a support surface suitable to rest on the planar surface of the upper plate 2.

[0071] In addition, the present invention relates to a production method of a thermal regulation device 1 of a battery pack 500 of an electrically powered and/or hybrid vehicle .

[0072] The production method comprises the steps of:

arranging in a pack three plates, i.e. an upper plate 2, an intermediate plate 3 and a lower plate 4, wherein said intermediate plate 3 comprises one or more slots 39;

- performing a rolling operation of the three plates;

- performing an expansion operation by blowing high pressure air inside the rolled plate pack, so as to obtain an operating cavity 5 between the upper plate 2 and the lower plate 4 and obtain inside said operating cavity 5 a turbulator element 30 comprising crest portions 31 that engage the upper plate 2 and valley portions 32 that engage the lower plate 4 defining in said operating cavity 5 a plurality of fluidically connected fluid passageways 300 in which the working fluid circulates with a thermal regulation device 1 in place .

[0073] Preferably, the rolling operations are performed at a temperature of about 450 °C.

[0074] Preferably, the air is blown at a pressure of about 150bar .

[0075] According to a preferred embodiment, the production method a thermal regulator 1 comprises the step of:

- performing, before the previous operations, a masking operation in which to insert a first layer of anti bonding ink II and a second layer of anti-bonding ink 12 respectively between the upper plate 2 and the intermediate plate 3 and between the lower plate 4 and the intermediate plate 3. [0076] According to a preferred embodiment, said first layer of anti-bonding ink II and said second layer of anti-bonding ink 12 are placed on the upper plate 2 and the intermediate plate 3 respectively.

[0077] According to an embodiment variant, said first layer of anti-bonding ink II and said second layer of anti bonding ink 12 are placed on the two respective faces of the intermediate plate 3.

[0078] Said anti-bonding ink layers II and 12 are specially shaped so that at some points the respective plates are divided from said layer, at other points the respective plates have portions free from said ink layers, facing each other so that they can come into contact following subsequent rolling operations.

[0079] In this way, the presence of the first anti-bonding ink layer II and the second anti-bonding ink layer 12 acts so that in the rolling operations, the intermediate plate 3 bonds with the upper plate 2 only at points where the anti-bonding layer is not present between the intermediate plate 3 and the upper plate 2 and in the same way the intermediate plate 3 bonds with the lower plate 4 only at points where the anti-bonding layer is not present between the intermediate plate 3 and the lower plate 4. Subsequent expansion operations then plastically modify the shape of such portions of the intermediate plate 3 (also at the respective slots 39) creating the crest portions 31 and the valley portions 32.

[0080] Preferably, said slots 39 are continuous or discontinuous depending on the type (and shape/distribution) of the desired fluid passageways 300; thus also depending on the type and shape of the anti bonding layers .

[0081] Preferably, the first anti-bonding ink layer II and the second anti-bonding ink layer 12 are applied in a central portion on the respective plates such that the perimeter edge portions of the upper plate 2, the intermediate plate 3 and the lower plate 4 are in direct contact and as a result of the rolling operation are mutually sealed together.

[0082] Preferably, said anti-bonding layers II and 12 therefore have the shape of the shaped portions 40.

[0083] According to a preferred embodiment, the expansion operation is performed in a mould composed of two parallel planes.

[0084] Preferably, in one of the two planes there is a recess inside which the lower plate 4 is plastically deformed by the action of the pressurised air defining the shaped profile 40.

[0085] According to a preferred embodiment, the production method of the present invention presupposes the realization of a thermal regulation device 1 having all the aforementioned characteristics. According to a preferred embodiment, the production method is performable with the components, e.g. sheets, or plates described above.

[0086] Innovatively, the thermal regulation device, the electrical and/or hybrid power supply system and the production method a thermal regulation device of the present invention amply fulfil the purpose of the present invention by overcoming the typical problems of the prior art .

[0087] Advantageously, in fact, the thermal regulation device performs effective heat exchange in all its portions. Advantageously, each portion of the battery pack coupled thereto receives and is subject to the same effective heat exchange.

[0088] Advantageously, the thermal regulation device has a simple geometry and a simple layout that allows easy coupling with the battery pack.

[0089] Advantageously, the heat exchange surface present in the thermal regulation device of the present invention is greater than the heat exchange surface of thermal regulation devices having the same dimensions.

[0090] Advantageously, the integration of the turbulator element permits an increase of the turbulence inside the operating cavity compared to thermal regulation devices having "dimples", effectively exploiting the largest available exchange surface.

[0091] Advantageously, the integration of the turbulator element permits an increase in the heat transfer coefficient (HTC - W/m2K) of the thermal regulation device. A higher value of this coefficient allows the thermal power to be effectively transferred from the battery to the working fluid (or vice versa) both under nominal load conditions and under overload conditions where the power to be transferred can increase considerably .

[0092] Advantageously, for example, in the presence of working conditions that require cooling of the batteries, the increase in the heat exchange coefficient ensures compliance with a certain exchange temperature at the interface between the batteries and the thermal regulation device even for values higher than the temperature of the working fluid entering the thermal regulation device. This effect has consequent advantages on the circuit used to cool the working fluid. In fact, this effect permits a simplification or removal of the components installed on the circulation circuit of the working fluid (e.g. evaporators, compressors, capacitors) and used to regulate (preferably lower) the temperature of the working fluid entering the thermal regulation device .

[0093] Advantageously, the thermal regulation device has a strong structural resistance. Advantageously, the presence of the turbulator element confers high load resistance. Advantageously, the planar nature of the thermal regulation device is guaranteed over time.

[0094] Advantageously, thermal regulation devices of greater longitudinal and/or transverse dimensions, than those known in the prior art can be made.

[0095] Advantageously, the production method is extremely versatile and modifiable (e.g. in the choice of the bonding layers and/or in the position of the slots and/or in the shape of the cavity, i.e. the shaped profile) depending on the desired characteristics of the thermal regulation device.

[0096] Advantageously, the specific choice of materials of the sheets and the specific choice of sheet thicknesses allows a synergistic control effect of the desired final shape of the thermal regulation device to be achieved.

[0097] Advantageously, the thermal regulation device has high dimensional tolerances, particularly with regard to planarity .

[0098] Advantageously, the fluid passageways have controlled dimensions, in particular the fluid passageways have a uniform thicknesses.

[0099] Advantageously, the thermal regulation device has a low impact on fluid system pressure drops.

[00100] Advantageously, the costs of making the thermal regulation device are extremely low.

[00101] It is clear that a person skilled in the art may make modifications to the thermal regulation device, to the electric and/or hybrid power supply system and the production method of a thermal regulation device described above up so as to satisfy contingent requirements, all contained within the scope of protection as defined by the following claims.

[00102] List of reference numbers:

1 thermal regulation device

2 upper plate

25 upper perimetral edges

3 intermediate plate

30 turbulator element

31 crest portions

32 valley portions

35 intermediate perimetral edges

39 slots

300 fluidic passageways

4 lower plate 40 shaped profile

45 lower perimetral edges

5 operating cavity

500 battery pack

900 electrical and/or hybrid power supply system

11 first layer of anti-bonding ink

12 second layer of anti-bonding ink

X-X longitudinal axis

Y-Y transverse axis

V-V vertical axis

Claims

1. A thermal regulation device (1) of a battery pack (500) of a vehicle with an electric and/or hybrid power supply, having a substantially planar shape identifying a longitudinal axis (X-X) , a transverse axis (Y-Y) and a vertical axis (V-V) , wherein the thermal regulation device (1) comprises along the vertical axis (V-V) an upper plate (2), an intermediate plate (3) and a lower plate ( 4 ) ;

wherein the thermal regulation device (1) comprises an operating cavity (5), defined between the upper plate (2) and the lower plate (4), in which the working fluid flows ;

wherein the intermediate plate (3) comprises a turbulator element (30) housed in the operating cavity (5) and having a height extension parallel to the vertical axis (V-V), wherein the turbulator element (30) comprises at least a crest portion (31) engaging the upper plate (2) and at least a valley portion (32) engaging the lower plate (4) in such a way as to define in the operating cavity (5) a plurality of fluidically connected fluid passageways (300) in which the working fluid circulates.

2. The thermal regulation device (1) according to claim

1, wherein the upper plate (2) is substantially planar and the lower plate (4) comprises a shaped profile (40) with one or more bulges extending vertically such that the coupling between the upper plate (2) and the lower plate (4) inside said shaped profile (40) defines the operating cavity (5) .

3. The thermal regulation device (1) according to claim

2, wherein said shaped profile (40) has the form of a single bulge, preferably centred in the lower plate (4) .

4. The thermal regulation device (1) according to any of the preceding claims, wherein the upper plate (2) and lower plate (4) are made of respective sheets of material having different elongation resistance at break.

5. The thermal regulation device (1) according to claim

4, wherein the sheet constituting the upper plate (2) is thicker than the sheet constituting the lower plate (4) .

6. The thermal regulation device (1) according to claim 4 or claim 5, wherein the sheet constituting the upper plate (2) is in a material selected from aluminium alloys and the sheet constituting the lower plate (4) is in a material selected from aluminium alloys.

7. The thermal regulation device (1) according to any of the preceding claims, wherein the crest portions (31) and the valley portions (32) are arranged alternately along a first preferred direction, for example parallel to the transverse axis (Y-Y) .

8. The thermal regulation device (1) according to claim 7, wherein the crest portions (31) and the valley portions (32) are also arranged alternately along a second preferred direction, for example parallel to the longitudinal axis (X-X) , so as to identify fluid passageways (300) in the form of fluidic tracts arranged as a matrix in the operating cavity (5) through which the working fluid flows.

9. The thermal regulation device (1) according to claim

8, wherein the crest portions (31) and the valley portions (32) are arranged in a predefined manner along a second preferential direction, for example parallel to the longitudinal axis (X-X) , so as to identify fluidic passageways (300) in the form of duct, through which the working fluid flows in a predefined manner, wherein the operating cavity (5) is shaped like a main duct and the crest portions (31) and the valley portions (32) define inside it secondary ducts distributed in said main duct.

10. The thermal regulation device (1) according to any of the preceding claims, comprising a fluid inlet connector and a fluid outlet connector fluidly connected to the operating cavity (5) through which the working fluid flows in and out.

11. An electric and/or hybrid power supply system (900) of a vehicle comprising a thermal regulation device (1) according to any one of the claims from 1 to 10, and a battery pack (500) engaged to the thermal regulation device (1), preferably to the upper plate (2) thereof.

12. A production method of a thermal regulation device (1) of a battery pack (500) of an electrically powered and/or hybrid vehicle, comprising the steps of:

- arranging in a pack three plates, i.e. an upper plate (2), an intermediate plate (3) and a lower plate (4), wherein said intermediate plate (3) comprises one or more slots (39) ;

- performing a rolling operation of the three plates ;

- performing an expansion operation by blowing high pressure air inside the rolled plate pack, so as to obtain an operating cavity (5) between the upper plate (2) and the lower plate (4) and obtain inside said operating cavity (5) a turbulator element (30) comprising at least one crest portion (31) that engages the upper plate (2) and at least one valley portion (32) that engages the lower plate (4) defining in said operating cavity (5) a plurality of fluidically connected fluid passageways (300) in which the working fluid circulates with a thermal regulation device (1) in place.

13. The production method of a thermal regulation device

(1) according to claim 12, further comprising the step of : - performing, before the previous operations, a masking operation in which to insert a first layer of anti-bonding ink (II) and a second layer of anti-bonding ink (12) respectively between the upper plate (2) and the intermediate plate (3) and between the lower plate (4) and the intermediate plate (3) .

14. The production method of a thermal regulation device (1) according to claim 13, wherein said first anti bonding ink layer (II) and said second anti-bonding ink layer (12) are placed on the upper plate (2) and the lower plate (4) respectively or are placed on the two respective faces of the intermediate plate (3) .

15. The production method of a thermal regulation device (1) according to any one of the claims from 12 to 14, wherein the first anti-bonding ink layer (II) and the second anti-bonding ink layer (12) are applied in a central portion on the respective plates such that the perimeter edge portions of the upper plate (2), the intermediate plate (3) and the lower plate (4) are in direct contact and as a result of the rolling operation are mutually sealed together.

16. The production method of a thermal regulation device (1) according to any one of the claims from 12 to 14, wherein the expansion operation is performed in a mould composed of two substantially parallel planes.