Module for electric vehicle

Abstract

An electrical module comprising: - a lower wall, - an upper wall opposite the lower wall, - a first lateral wall (4) connecting the lower wall to the upper wall, - a second lateral wall opposite the first lateral wall and connecting the lower wall to the upper wall, - an inlet wall integral with the lower wall, the upper wall, the first lateral wall, and the second lateral wall, - an outlet wall opposite the inlet wall and integral with the lower wall, the upper wall, the first lateral wall, and the second lateral wall. The lower wall, upper wall, first lateral wall, second lateral wall, inlet wall, and outlet wall together define an internal cavity intended to be filled with a dielectric liquid. Figure for the abbreviation: Figure 1

Description

Title of the invention: Module for electric vehicle Technical field of the invention

[0001] The invention relates to the field of rechargeable electric batteries for electric motor vehicles. In particular, the invention relates to modules comprising a plurality of electrical cells. More precisely, the invention relates to a module capable of being filled with a dielectric coolant. The invention also relates to a thermal management system for this module. Technical background

[0002] The electric battery intended to equip electric vehicles comprises several electrical modules, themselves comprising numerous electrical cells.

[0003] For optimal operation, the cells are maintained within a predetermined temperature range.

[0004] Thus, the thermal management of cells can consist of cooling the cells or, on the contrary, heating them.

[0005] Thermal management of cells in a module is therefore a major issue.

[0006] Among existing thermal management techniques, one of them consists of immersing the cells in a liquid whose temperature is controlled. Thus, the cells in the module are in direct contact with a liquid.

[0007] This thermal management by immersion is particularly effective. Indeed, it allows for better heat transfer by direct contact and enables thermal control in areas that may be difficult to access otherwise.

[0008] Thermal management by immersion requires a sealed module in which the electrical cells are arranged. A fluid is circulated in the module.

[0009] Depending on the type of cells (cylindrical, prismatic, in bags, with wound electrodes or with stacked electrodes), thermal management can be adapted.

[0010] Stacked electrode cells have complex thermal management. These cells comprise a plurality of electrodes stacked one on top of the other, each electrode being distinct from the others.

[0011] Optimal management implies being able to act thermally on each of the electrodes that make up the cell.

[0012] Acting thermally on each of the electrodes is particularly complex to implement with regard to stacked electrode cells.

[0013] There is therefore a need to improve the architecture of the electrical modules. Summary of the invention

[0014] To this end, an electrical module comprising: is proposed firstly -a lower wall, - an upper wall opposite the lower wall, - a first lateral wall connecting the lower wall to the upper wall, - a second lateral wall opposite the first lateral wall and connecting the lower wall to the upper wall, - an entrance wall integral with the lower wall, the upper wall, the first side wall and the second side wall, - an outlet wall opposite the inlet wall and integral with the lower wall, the upper wall, the first side wall, and the second side wall; the lower wall, upper wall, first side wall, second side wall, inlet wall, and outlet wall together defining an internal cavity intended to be filled with a dielectric fluid; a module in which the inlet wall comprises at least one fluid inlet opening into the internal cavity and the outlet wall comprises at least one fluid outlet opening into the internal cavity; the module comprising a plurality of electrical cells; said cells comprising a stack of electrodes distinct from one another and separated by a porous separator film; said electrodes being stacked along a stacking axis; said electrode stack being enclosed in a flexible, airtight bag; a module in whichThe electrical cells are arranged one on top of the other and in direct contact with each other so as to form at least one column extending along the stacking axis of the electrodes of said cells, a module in which this includes a fluidic channel on either side of the column of electrical cells.

[0015] Such an architecture allows for thermal management of each electrode of each cell. Indeed, this arrangement allows the fluid to come as close as possible to each electrode of each cell of the module. The fluid thus lapping at the periphery of each electrode. There is no contact between the fluid and the electrodes, as the flexible bag does not allow such direct contact. This architecture therefore enables precise thermal management of each electrode. Such precise thermal management significantly increases the performance of the module and therefore of the battery, by allowing operation under optimal thermal conditions through precise and accurate temperature control of each electrode.

[0016] Various additional features may be provided alone or in combination: - the cells have a substantially parallelepiped shape, said cell having a first face and a second face opposite the first face and slices connecting the first face to the second face, said first and second face each having a surface greater than the surface of each of the slices taken individually, module in which, in a column of cells, said cells are arranged one on top of the other along the stacking axis, so that the second face of a given electrical cell is in direct contact with the first face of a neighboring electrical cell; - a fluidic channel borders at least one slice of each electrical cell, a module in which the electrodes of a given electrical cell are arranged one on top of the other along the slices and according to the stacking axis; - the module comprises a first fluidic channel arranged between the first side wall and the column of electrical cells and a second fluidic channel arranged between the second side wall and the column of electrical cells, and each fluidic channel extends at least over a length substantially equal to a length of each cell measured along a longitudinal axis substantially perpendicular to the stacking axis, said longitudinal axis being further substantially parallel to the side walls; - each fluidic channel extends from the lower wall to the upper wall along the stacking axis; - the module includes a first fluidic zone arranged between the inlet wall and at least one column of cells; - the module includes a second fluidic zone arranged between the outlet wall and at least one column of cells; - each fluidic zone extends between the lower wall and the upper wall along the stacking axis; - the column of cells extends from the lower wall to the upper wall; - each cell includes a lateral edge, said lateral edge being formed by joining two ends of the flexible bag, said ends being fixed to each other so as to close said flexible bag; - comprises a first fluidic channel and a second fluidic channel located on either side of the cell column and the lateral edge of each cell protrudes into the second fluidic channel; - the lateral edges together present a lateral section P, module in which the first fluidic channel presents a first section SI and the second fluidic channel presents a second section S2 equal to SI + P, said sections being measured in a plane substantially perpendicular to the lateral walls; - comprises two columns of cells, a first column of cells and a second column of cells, module in which this includes: - a first fluidic channel arranged between the first lateral wall and the first column, - a second fluidic channel arranged between the second lateral wall and the second column, and - a separation channel between the first column and the second column, module in which the lateral edge of each cell protrudes into the separation channel; - the lateral edges together present a lateral K-section, module in which, module in which, - the first fluidic channel presents a third section S3, - the second fluidic channel has a fourth section S4 equal to the third section S3, and - the separation channel has a fifth section S5 between S3 / 3 + 2K and 2S3 / 3 + 2K; - The module comprises two columns of cells, a first column of cells and a second column of cells, the module in which this includes: - a first fluidic channel arranged between the first lateral wall and the first column, - a second fluidic channel arranged between the second lateral wall and the second column, and - a separation channel between the first column and the second column, module in which the lateral edge of each cell of the first column protrudes into the separation channel and the lateral edge of each cell of the second column protrudes into the second fluidic channel; - the lateral edges of the first column together present a lateral V-section, a module in which, - the first fluidic channel presents a first section S6, - the second fluidic channel has a second S7 section smaller than 2S6 / 3 + V, and - the separation channel has a third section S8 located between S6 / 3 + V and S6 / 2 + V; - the flow lengths are substantially equal between at least one inlet orifice and at least one outlet orifice; - the module includes turbulence devices arranged in each fluidic channel; - the first lateral wall and the second lateral wall each comprise an internal lateral face situated opposite a column of cells, the first lateral wall and the second lateral wall comprising pins projecting from the internal lateral faces, into the internal cavity.

[0017] Secondly, a thermal management system is proposed comprising a module as previously described, said system comprising: - a closed fluidic circuit in fluidic connection with the module's inlet port on one side and with the module's outlet port on the other, - a dielectric fluid suitable for circulating in the fluidic circuit - means of measuring the temperature of the dielectric liquid, - a suitable pump designed to move the dielectric fluid in the fluidic circuit - a computer management system capable of receiving data from temperature measurement devices and capable of controlling the pump. Brief description of the figures

[0018] Other features and advantages of the invention will become apparent upon reading the detailed description that follows, for an understanding of which reference should be made to the accompanying drawings in which:

[0019] [Fig-1] [Fig.1] is a schematic perspective representation of a module according to the invention.

[0020] [Fig.2] [Fig.2] is a front view of the module according to a first embodiment.

[0021] [Fig.3] [Fig.3] is a sectional view along the cutting plane III-III of [Fig.2].

[0022] [Fig.4] [Fig.4] is a front view of the module according to a second mode of realization.

[0023] [Fig.5] [Fig.5] is a front view of the module according to a third embodiment.

[0024] [Fig.6] [Fig.6] is a schematic perspective representation of a module according to the invention.

[0025] [Fig.7] [Fig.7] is a schematic representation of a thermal management system comprising a module according to the invention. Detailed description of the invention

[0026] The drawings show an electrical module 1. The electrical module 1 comprises: - a lower wall 2, - an upper wall 3 opposite the lower wall 2, - a first lateral wall 4 connecting the lower wall 2 to the upper wall 3, - a second lateral wall 5 opposite the first lateral wall 4 and connecting the lower wall 2 to the upper wall 3, - an entrance wall 6 integral with the lower wall 2, the upper wall 3, the first lateral wall 4 and the second lateral wall 5, - an exit wall 7 opposite the entrance wall 6 and attached to the lower wall 2, the upper wall 3, the first lateral wall 4 and the second lateral wall 5.

[0027] The walls together define an internal cavity 8. The internal cavity 8 is intended to be filled with a dielectric liquid.

[0028] The inlet wall 6 includes at least one fluid inlet orifice 9. The fluid inlet orifice 9 opens into the internal cavity 8.

[0029] The outlet wall 7 includes at least one fluid outlet orifice 10. The fluid outlet orifice 10 opens into the internal cavity 8.

[0030] Module 1 comprises several electrical cells 11. Each cell 11 comprises a stack 12 of electrodes. The electrodes 13 are distinct from one another and separated by a porous separator film 14. By "distinct," it is understood that the electrodes 13 are cut to form portions. Once cut, the electrodes 13 are stacked one on top of the other, separated by a porous separator film 14, to form a stack 12 of electrodes.

[0031] In the cell, the electrodes 13 are stacked along a stacking axis. In other words, the electrodes 13 are stacked one on top of the other along the stacking axis. Thus, the electrodes are not wound. In other words, the electrodes do not form a coil of any shape.

[0032] The cell 11 includes a flexible pouch 15. The flexible pouch 15 is airtight and encloses the stack 12 of electrodes. By "airtight," it is understood that the flexible pouch 15 is sealed in that it isolates the stack 12 of electrodes 13 and the electrolyte. Thus, no leakage of electrolyte to the outside is possible and no external contamination can enter the flexible pouch 15.

[0033] The electrical cells 11 are arranged one on top of the other, as can be seen in the drawings.

[0034] The cells 11 are in direct contact with each other and together form at least one column 16, 31, 32 which extends along the stacking axis.

[0035] Module 1 includes a fluidic channel 24, 25 on either side of the column 16, 31, 32 of the electrical cells 11.

[0036] Such an architecture allows for thermal management of each electrode 13 of each cell. Indeed, this arrangement allows the fluid to come as close as possible to each electrode 13 of each of the cells 11 of the module. The fluid thus lapping at the periphery of each of the electrodes. There is no contact between the fluid and the electrodes, the flexible bag 15 not allowing such direct contact. This architecture thus allows for precise thermal management of each electrode. Such precise thermal management significantly increases the performance of module 1 and therefore of the battery, by enabling operation under optimal thermal conditions through precise and accurate temperature control of each electrode.

[0037] Advantageously, each cell 11 has a substantially parallelepiped shape. The cells 11 have a first face 18 and a second face 19 opposite the first face. The cells 11 comprise slices 22, 23, 27. Each slice 22, 23, 27 connects the first face 18 to the second face 19 of a given cell 11. The first face 18 and the second face 19 each have a substantially equal surface area. This surface area is greater than the surface area of ​​a slice 22, 23, 27.

[0038] As can be seen in the drawings, in a given column 16, 31, 32, and as previously mentioned, the cells 11 are arranged one on top of the other along the stacking axis. Thus, the second face 19 of a given cell 11 is in direct contact with the first face 18 of an immediately adjacent cell 11. It being understood that this is not the case for end cells 21.

[0039] Such an arrangement provides stability to the cell column 16, 31, 32. Another advantage is that it allows the slices 22, 23, 27 to be freed up so that they open onto the fluidic channels in order to allow thermal management of said slices 22, 23, 27 by direct contact with a heat transfer fluid.

[0040] Advantageously, at least one lateral slice 27 of each cell 11 is bordered by a fluidic channel 24, 25. In the embodiments shown in the drawings, two lateral slices 27 of a given cell 11 are bordered by a fluidic channel 24, 25 and two slices 22, 23 proximal and distal are bordered by a fluidic zone 28, 29.

[0041] A fluidic channel 24, 25 is defined as a space in module 1 between a lateral wall 4, 5 and a column 16, 31, 32 of cells, and a fluidic zone 28, 29 is defined as a space in module 1 between an inlet or outlet wall 6 and a column 16, 31, 32 of cells. For clarity, the fluidic channels extend from the inlet wall 6 to the outlet wall 7.

[0042] The electrodes 13 of a given cell 11 are arranged one on top of the other along the slices 22, 23, 27 and along the stacking axis.

[0043] Such an arrangement allows thermal management of each of the electrodes 13 of a given cell 11 by direct contact between the heat transfer fluid and the slices 22, 23, 27 of each of said cells.

[0044] As previously mentioned, advantageously module 1 comprises a first fluidic channel 24 arranged between the first lateral wall 4 and at least one column 16, 31, 32 of electrical cells 11.

[0045] Advantageously, module 1 includes a second fluidic channel 25 arranged between the second lateral wall 5 and at least one column 16, 31, 32 of electrical cells 11.

[0046] Thus, lateral slices 27 of each cell 11 are bordered by a fluidic channel 24, 25 along a longitudinal axis substantially perpendicular to the stacking axis and whose direction extends from the inlet wall 6 to the outlet wall 7. Thus, the longitudinal axis is substantially parallel to the lateral walls.

[0047] Each fluidic channel 24, 25 extends over a length at least substantially equal to the length of each cell. The length of a cell 11 is measured along the longitudinal axis.

[0048] Thus, thermal management is optimal by heat exchange over the entire length of the cells 11 and therefore of the electrodes.

[0049] Advantageously, each fluidic channel 24, 25 extends from the lower wall 2 to the upper wall 3 along the stacking axis.

[0050] Thus, thermal management is optimal by heat exchange over the entire height of the column 16, 31, 32 of cells 11 and therefore of the electrodes.

[0051] As previously mentioned, module 1 comprises a first fluidic zone 28 arranged between the inlet wall 6 and at least one column 16, 31, 32 of cells. Module 1 comprises a second fluidic zone 29 arranged between the outlet wall 7 and at least one column 16, 31, 32 of cells. Thus, the distal and proximal slices 22, 23 can be thermally regulated, thereby increasing cell performance.

[0052] Advantageously the fluidic zones 28, 29 extend between the lower wall 2 and the upper wall 3 along the stacking axis.

[0053] This allows thermal regulation of all cells 11 and thus of all electrodes 13 by the distal and proximal slices 22, 23.

[0054] Advantageously, at least one column 16, 31, 32 of cells 11 extends from the lower wall 2 to the upper wall 3. Thus, the end cells 21 of the column 16, 31, 32 are in contact with the lower wall 2 and the upper wall 3.

[0055] The upper and lower walls thus provide stability to the column 16, 31, 32 of cells. In addition, thermal regulation is optimized.

[0056] Each cell 11 has a lateral edge. The lateral edge 30 is formed by joining two ends of the flexible bag 15. The ends of the flexible bag 15 are fixed to each other to hermetically seal said flexible bag 15.

[0057] The lateral edge 30 is inherent to the cells 11 wrapped in a flexible pouch 15. This lateral edge 30 exists due to the need to seal the flexible pouch 15.

[0058] In a first embodiment shown in Figures X to Y, the module 1 comprises a single column 16 of cells 11 stacked one on top of the other along the stacking axis. The module 1 comprises a first fluidic channel 24 between the first lateral wall 4 and the column 16, and a second fluidic channel 25 between the second lateral wall 5 and the column.

[0059] The lateral edge 30 extends in projection into the second fluidic channel 25.

[0060] The lateral edge 30 behaves as a turbulent device in the second fluidic channel 25. The heat transfer fluid flow in the second fluidic channel 25 is then animated by an irregular movement, improving heat exchange with the heat transfer fluid in the second fluidic channel 25.

[0061] Advantageously, the lateral edges of the cells 11 of the first column together present a lateral cross-section P. The first fluidic channel 24 has a first cross-section SI, and the second fluidic channel 25 has a second cross-section S2 equal to SI + P. The cross-sections are measured in a plane formed by the stacking axis and a transverse axis perpendicular to the stacking axis and to the longitudinal axis. The plane is thus substantially perpendicular to the lateral walls.

[0062] Such an arrangement makes it possible to obtain a substantially identical flow rate in each channel 24, 25 fluidic thus improving the performance of the electrical cells 11 thanks to a substantially homogeneous thermal regulation in the module.

[0063] In a second embodiment shown in figures X to Y, module 1 comprises a first column of cells 11 and a second column of cells.

[0064] Module 1 comprises: - a first fluidic channel 24 arranged between the first lateral wall 4 and the first column, - a second fluidic channel 25 arranged between the second lateral wall 5 and the second column, and - a 33 channel separating the first column and the second column.

[0065] As can be seen in the drawings, the lateral edge 30 of each cell 11 protrudes into the separation channel 33.

[0066] The lateral edge 30 behaves as a turbulent device in the separation channel. The flow of heat transfer fluid in the separation channel is then animated by an irregular movement, improving heat exchange with the heat transfer fluid in the separation channel.

[0067] Advantageously, the lateral edges of the cells 11 of the first and second columns together present a lateral K section. In this module 1: - the first fluidic channel 24 presents a third section S3, - the second fluidic channel 25 has a fourth section S4 equal to the third section S3, and - the separation channel 33 has a fifth section S5 between S3 / 3 + 2K and 2S3 / 3 + 2K.

[0068] Such an arrangement makes it possible to obtain a substantially identical flow rate in each fluidic channel 24, 25 and in the separation channel 33, thus improving the performance of the electrical cells 11 thanks to a substantially homogeneous thermal regulation in the module.

[0069] In a third embodiment shown in figures X to Y, module 1 comprises a first column of cells 11 and a second column of cells.

[0070] Module 1 comprises: - a first fluidic channel 24 arranged between the first lateral wall 4 and the first column, - a second fluidic channel 25 arranged between the second lateral wall 5 and the second column, and - a separation channel 33 between the first column and the second column, module 1 in which the lateral edge 30 of each cell 11 of the first column protrudes into the separation channel 33 and the lateral edge 30 of each cell 11 of the second column protrudes into the second fluidic channel 25.

[0071] As can be seen in the drawings, the lateral edge 30 of each cell 11 of the first column protrudes into the separation channel 33 and the lateral edge 30 of each cell 11 of the second column protrudes into the second fluidic channel 25.

[0072] The lateral edge 30 behaves like a turbulent device. The heat transfer fluid flow is then animated by an irregular movement, improving heat exchange with the heat transfer fluid.

[0073] Advantageously, the lateral edges of the cells 11 of the first and second columns together have a lateral K section. In this module 1: - the first fluidic channel 24 has a first S6 section, - the second fluidic channel 25 has a second S7 section less than 2S6 / 3 + V, and - the separation channel 33 has a third section S8 located between S6 / 3 + V and S6 / 2 + V.

[0074] Such an arrangement makes it possible to obtain a substantially identical flow rate in each fluidic channel 24, 25 and in the separation channel 33, thus improving the performance of the electrical cells 11 thanks to a substantially homogeneous thermal regulation in the module.

[0075] The following applies to all embodiments.

[0076] Advantageously the flow lengths of the heat transfer fluid are substantially equal between at least one inlet orifice 9 and at least one outlet orifice 10.

[0077] This makes it possible to obtain a substantially identical flow rate in each channel 24, 25 fluidic thus improving the performance of the electrical cells 11 thanks to a substantially homogeneous thermal regulation in the module.

[0078] Advantageously, module 1 includes turbulence devices arranged in each fluidic channel 24, 25.

[0079] This allows the heat transfer fluid to have an irregular movement, improving heat exchange with the cells.

[0080] Advantageously, the first lateral wall 4 and the second lateral wall 5 each comprise an internal lateral face situated opposite a column 16, 31, 32 of cells, the first lateral wall 4 and the second lateral wall 5 comprising pins projecting from the internal lateral faces, into the internal cavity 8

[0081] This allows the heat transfer fluid to have an irregular movement, improving heat exchange with the cells.

[0082] The invention advantageously relates to a thermal management system 34 comprising the module 1 described above.

[0083] The thermal management system 34 comprises a closed fluidic circuit 35. The fluidic circuit 35 is in fluidic connection with the inlet port 9 and with the outlet port 10.

[0084] The thermal management system 34 includes a dielectric fluid circulating in the fluidic circuit 35. The dielectric fluid is a heat transfer fluid.

[0085] The thermal management system 34 includes means 36 for measuring the temperature of the dielectric liquid. These measuring means 36 are, for example, temperature sensors.

[0086] The thermal management system 34 includes a pump 37 suitable and intended to move the dielectric liquid in the fluidic circuit 35.

[0087] The thermal management system 34 includes a computer control device 38 capable of receiving temperature data from the temperature measurement means 36. The computer control device 38 is capable of controlling the pump 37 in order to modify the flow rate of the dielectric fluid in the fluidic circuit 35 according to the temperature data.

[0088] Such a thermal management system 34 makes it possible to obtain optimal thermal regulation so that the electrical cells 11 operate optimally for the benefit of better overall performance.

Claims

Demands

1. Electrical module (1) comprising: - a lower wall (2), - an upper wall (3) opposite the lower wall (2), - a first lateral wall (4) connecting the lower wall (2) to the upper wall (3), - a second lateral wall (5) opposite the first lateral wall (4) and connecting the lower wall (2) to the upper wall (3), - an entrance wall (6) integral with the lower wall (2), the upper wall (3), the first lateral wall (4) and the second lateral wall (5), - an outlet wall (7) opposite the inlet wall (6) and integral with the lower wall (2), the upper wall (3), the first lateral wall (4) and the second lateral wall (5), the lower wall (2), upper wall (3), first lateral wall (4), second lateral wall (5), inlet wall (6) and outlet wall (7), together defining an internal cavity (8) intended to be filled with a dielectric fluid, module (1) in which the inlet wall (6) comprises at least one fluidic inlet orifice (9) opening into the internal cavity (8) and the outlet wall (7) comprises at least one fluidic outlet orifice (10) opening into the internal cavity (8), module (1) comprising a plurality of electrical cells (11), said cells (11) comprising a stack (12) of electrodes (13) distinct from one another and separated by a film (14) porous separator, said electrodes (13) being stacked along a stacking axis (Y),said stack (12) of electrodes (13) being wrapped in a flexible, airtight bag (15), module (1) in which the electrical cells (13) are arranged one on top of the other and in direct contact with each other so as to form at least one column (16, 31, 32) extending along the axis (Y) of stacking of the electrodes (13) of said cells (11), module (1) in which this includes a fluidic channel (25, 26) on either side of the column (16, 31, 32) of electrical cells (11).

2. Module (1) according to claim 1, wherein the cells (11) have a substantially parallelepiped shape, said cell (11) having a first face (18) and a second face (19) opposite the first face (18) and slices (22, 23, 27) connecting the first face (18) to the second face (19), said first and second faces (18, 19) each having a surface area greater than the surface area of ​​each of the slices (22, 23, 27) taken individually, module (1) in which, in a column (16, 31, 32) of cells (11), said cells (11) are arranged one on top of the other along the stacking axis (Y), so that the second face (19) of a given electrical cell (11) is in direct contact with the first face (18) of a neighboring electrical cell (11).

3. Module (1) according to claim 2 in which a fluidic channel (25, 26) borders at least one slice (22, 23, 27) of each electrical cell, module (1) in which the electrodes (13) of a given electrical cell (11) are arranged one on top of the other along the slices (22, 23, 27) and along the stacking axis (Y).

4. Module (1) according to any one of the preceding claims, wherein it comprises a first fluidic channel (25) arranged between the first lateral wall (4) and the column (16, 31, 32) of electrical cells and a second fluidic channel (26) arranged between the second lateral wall (5) and the column (16, 31, 32) of electrical cells (11), and each fluidic channel (25, 26) extends at least over a length substantially equal to a length of each cell (11) measured along a longitudinal axis (Z) substantially perpendicular to the stacking axis (Y), said longitudinal axis (Z) further being substantially parallel to the lateral walls (4, 5).

5. Module (1) according to any one of the preceding claims in which each fluidic channel (25, 26) extends from the lower wall (2) to the upper wall (3) along the stacking axis (Y).

6. Module (1) according to any one of the preceding claims wherein, it comprises a first fluidic zone (28) arranged between the inlet wall (6) and at least one column (16, 31, 32) of cells (11).

7. Module (11) according to any one of the preceding claims wherein, it comprises a second fluidic zone (29) arranged between the outlet wall (7) and at least one column (16, 31, 32) of cells (11).

8. Module (1) according to any one of claims 6 or 7 in which each fluidic zone (28, 29) extends between the lower wall (2) and the upper wall (3) along the stacking axis (Y).

9. Module (1) according to any one of the preceding claims in which the column (16, 31, 32) of cells (11) extends from the lower wall (2) to the upper wall (3).

10. Module (1) according to any one of the preceding claims in which, each cell (11) comprises a lateral edge (30), said lateral edge (30) being formed by joining two ends of the flexible bag (15), said ends being fixed to each other so as to close said flexible bag (15).

11. Module (1) according to claim 10 wherein, it comprises a first fluidic channel (25) and a second fluidic channel (26) situated on either side of the column (16) of cells and the lateral edge (30) of each cell protrudes into the second fluidic channel (26).

12. Module (1) according to claim 11 in which the lateral edges (30) together have a lateral section P, module (1) in which the first fluidic channel (25) has a first section SI and the second fluidic channel has a second section S2 equal to S1 + P, said sections being measured in a plane substantially perpendicular to the lateral walls (4, 5).

13. Module (1) according to claim 10 wherein, it comprises two columns (31, 32) of cells (11), a first column (31) of cells (11) and a second column (32) of cells (11), module (1) wherein it comprises: - a first fluidic channel (25) arranged between the first lateral wall (4) and the first column (31), - a second fluidic channel (26) arranged between the second lateral wall (5) and the second column (32), and - a separation channel (33) between the first column (31) and the second column (32), module (1) wherein, the lateral edge (30) of each cell (11) protrudes into the separation channel (33).

14. Module (1) according to claim 13 wherein, the lateral edges (30) together have a lateral section K, module (1) in which, module (1) in which, - the first fluidic channel (25) has a third section S3, - the second fluidic channel (26) has a fourth section S4 equal to the third section S3, and - the separation channel (33) has a fifth section S5 between S3 / 3 + 2K and 2S3 / 3 + 2K.

15. Module (1) according to claim 10, wherein it comprises two columns (31, 32) of cells, a first column (31) of cells (11) and a second column (32) of cells (11), module (1) wherein it comprises: - a first fluidic channel (25) arranged between the first lateral wall (4) and the first column (31), - a second fluidic channel (26) arranged between the second lateral wall (5) and the second column (32), and - a separating channel (33) between the first column (31) and the second column (32), module (1) wherein the lateral edge (30) of each cell (11) of the first column (31) projects into the separating channel (33) and the lateral edge (30) of each cell (11) of the second column (32) projects into the second channel (26) fluidic.

16. Module (1) according to claim 15 in which the lateral edges (30) of the first column (31) together have a lateral section V, module (1) in which - the first fluidic channel (25) has a first section S6, - the second fluidic channel (26) has a second section S7 less than 2S6 / 3 + V, and - the separation channel (33) has a third section S8 between S6 / 3 + V and S6 / 2 + V.

17. Module (1) according to any one of the preceding claims wherein, the flow lengths are substantially equal between at least one inlet orifice (9) and at least one outlet orifice (10).

18. Module (1) according to any one of the preceding claims wherein, it comprises turbulence devices arranged in each fluidic channel (25, 26).

19. Module (1) according to claim 18, wherein the first lateral wall (4) and the second lateral wall (5) each comprise an internal lateral face situated opposite a column of cells, the first lateral wall (4) and the second lateral wall (5) including pins projecting from the internal lateral faces, into the internal cavity (8).

20. Thermal management system (34) comprising module (1) according to any one of the preceding claims, said system (34) comprising: - a closed fluidic circuit (35) in fluidic connection with the inlet port (9) of the module (1) on the one hand and with the outlet port (10) of the module (1) on the other hand, - a dielectric liquid suitable for circulating in the fluidic circuit (35), - means (36) for measuring the temperature of the dielectric liquid, - a pump (37) suitable and intended for moving the dielectric liquid in the fluidic circuit (35), - a computer management device (38) suitable for receiving data from the temperature measurement means (36) and suitable for controlling the pump (37).

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