COOLING DEVICE FOR A POUCH CELL OF AN ELECTRIC BATTERY

Description

Technical field of the invention

[0001] This description relates to the field of energy storage. The present invention concerns a cooling device for bagged cells. The invention relates to a module comprising such a cooling device, as well as an electric vehicle battery comprising such a module. The invention also relates to a method for manufacturing such a cooling device. State of the art

[0002] In many industrial sectors, such as electric vehicles, it is common practice to design energy storage systems to power various applications, particularly the motors of these electric vehicles. A frequent challenge with these systems lies in the difficulty of effectively managing the heat generated by the modules during the charge and discharge cycles of the cells they contain. Another challenge is the need to maintain the battery cells within an ideal temperature range for optimal operation. Indeed, a cell subjected to excessively low temperatures will not function correctly. Excessively high temperatures can impair cell performance or even lead to cell destruction. Heat dissipation is therefore a crucial requirement, as are solutions for protection against extreme cold.

[0003] The charging and discharging cycles generate heat. This heat is transferred through the electrodes. Excessive temperatures can damage the module and the cell itself. Heat is generated both by the electrical connections and by the cell itself. This combination of heat sources highlights the importance of regulating the temperature of both the electrical connections and the cell. High temperatures pose a potential threat to the cell.

[0004] To address this issue, battery module cooling techniques are known, such as circulating coolant through specially designed channels within the battery packs. These techniques maintain cell temperatures at an acceptable level, thus contributing to the safety and durability of electric vehicle batteries. Document KR 2021 0065268 A describes a cooling device designed to dissipate the heat concentrated at a busbar connecting the electrode tabs of pouch-type electrical cells in a battery module.

[0005] However, existing devices have several drawbacks. First, their use to reduce electrode heating in electric battery module cells often results in high energy consumption and is complex to implement due to their significant size. This also increases the overall cost of manufacturing batteries and electric vehicles. Furthermore, these systems can occupy valuable space within a given battery pack, thus reducing the battery's energy density. Additionally, coolant leaks can lead to safety issues and environmental pollution.Other known cooling techniques, such as the use of air cooling systems with fans or blowers, are also known but have the disadvantage of being bulky and less efficient at dissipating large amounts of heat or maintaining electrodes at uniform temperatures. These disadvantages clearly illustrate the limitations of existing cooling techniques.

[0006] Therefore, there is a need to develop solutions to improve the efficient management of heat generated within battery packs and modules of such electric batteries, without the drawbacks of traditional techniques. Object of the invention

[0007] In order to address this or these drawbacks, a cooling device for at least one bagged cell of an electric battery module is proposed under the first object of this document. The cooling device comprises an electrically insulating blade provided with a plurality of slots, each slot being designed to be traversed by a respective electrode of the at least one bagged cell, and a plurality of metal flanges, each metal flange being disposed between two slots of the plurality of slots and comprising, on the one hand, a first surface adapted to be in contact with the electrode traversing the respective slot and, on the other hand, at least a second surface covered by a thermal interface material, the thermal interface material being adapted to thermally connect the second surface of the metal flange to at least one plate of the electric battery module.said plate being capable of being actively thermally regulated.

[0008] In the present, active thermal regulation of a plate can be implemented by a means capable of dynamically controlling and / or maintaining the temperature of that plate.

[0009] This provides an efficient, economical and environmentally friendly solution for maintaining battery cell temperature at an optimal level.

[0010] According to one embodiment, the first surface of at least one of the metal flanges is between 50 square millimeters and 2000 square millimeters and / or wherein the second surface of at least one of the metal flanges is between 30 square millimeters and 2000 square millimeters

[0011] This allows, when the first surface area of ​​at least one of the metal flanges is between 50 square millimeters and 2000 square millimeters, for an optimal area for heat transfer between the electrode and the flange. When the second surface area of ​​at least one of the metal flanges is between 30 square millimeters and 2000 square millimeters, this provides an optimal area for heat transfer between the flange and the actively cooled plate. When the first surface area of ​​at least one of the metal flanges is between 50 square millimeters and 2000 square millimeters and the second surface area of ​​at least one of the metal flanges is between 30 square millimeters and 2000 square millimeters, this provides a combination of optimal areas for heat transfer between the electrode and the actively cooled plate.

[0012] In this context, a surface is equivalent to an area, expressed in square millimeters.

[0013] According to one embodiment, at least one of the metal flanges has an L-shaped form.

[0014] This allows for optimal thermal bonding of the flange to a horizontal plate, for efficient cooling from above or below.

[0015] According to another embodiment, at least one of the metal flanges has a C-shape.

[0016] This allows for optimal thermal bonding of the flange to two horizontal plates, for efficient cooling from above and below.

[0017] According to another embodiment, at least one of the metal flanges has a U-shaped form.

[0018] This allows for optimal thermal bonding of the flange to a vertical plate, for efficient cooling on one side.

[0019] According to one embodiment, the electrically insulating blade is formed partially or totally of a material selected from polypropylene, polyethylene, ceramic, a glass fiber reinforced polymer, a thermoplastic material, a thermoplastic composite material, polyamide, polybutylene terephthalate and / or acrylonitrile butadiene styrene polycarbonate.

[0020] In this document, polyamide is denoted "PA", polybutylene terephthalate is denoted "PBT", and polycarbonate acrylonitrile butadiene styrene is denoted "PC-ABS".

[0021] Polypropylene provides adequate thermal resistance to withstand the normal operating temperatures of battery cell modules. It also offers optimal moisture resistance and better short-circuit prevention. While brittle, ceramics provide excellent thermal resistance, withstanding temperatures higher than polymers, on the order of 200°C. Composite materials, such as a glass fiber-reinforced polymer, offer high thermal and mechanical resistance with properties adaptable to the specific requirements of the cells. In addition to their lightness, flexibility, and adaptable thermal resistance, thermoplastic composite materials have the advantage of increased corrosion resistance. Polypropylene (PA) provides reliable electrical insulation while also offering high thermal and mechanical resistance.In addition to these advantages, PBT also allows excellent dimensional stability when exposed to variable temperatures, while PC-ABS also maintains its mechanical and insulating properties by withstanding temperatures exceeding 60°C.

[0022] According to one embodiment, the thermal interface material is chosen from a silicone-free thermally conductive adhesive, a thermally conductive adhesive comprising silicone, an adhesive comprising a thermally conductive filler, a silicone-free thermally conductive sealant, a thermally conductive sealant comprising silicone, a single-component curing adhesive without thermally conductive filler, a two-component curing adhesive without thermally conductive filler, a single-component curing adhesive comprising at least one thermally conductive filler, a two-component curing adhesive comprising at least one thermally conductive filler, a silicone-free thermally conductive pad and / or a thermally conductive pad comprising silicone.

[0023] This offers efficient thermal conductivity, adaptability to different types of surfaces and electrical insulation properties, thus ensuring optimal thermal management for electronic components while guaranteeing simplified application.

[0024] According to one embodiment, at least two of the slots in the electrically insulating blade each comprise an opening of substantially rectangular shape, the at least two slots being parallel to each other.

[0025] This allows for optimization of the available volume for connecting electrodes.

[0026] According to a second object of the present, an electric battery module is also proposed comprising the cooling device according to any one of the preceding embodiments, the electric battery module further comprising at least one bag cell and at least one plate, in which at least one slot of the electrically insulating blade is traversed by the respective electrode of the at least one bag cell, the respective electrode being in contact with the first surface of a respective metal flange among the plurality of metal flanges, the at least a second surface of the respective metal flange being covered by the thermal interface material, the thermal interface material thermally connecting the second surface of the respective metal flange to the at least one plate, the at least one plate being capable of being actively thermally regulated.

[0027] This allows one of the module walls to participate in the active cooling of the electrodes.

[0028] According to one possible embodiment, at least one plate is actively cooled by liquid.

[0029] This enables efficient and uniform heat dissipation within the battery module, improving the thermal regulation of the cells and components. This active liquid cooling method ensures precise temperature management, reducing the risk of overheating and improving the durability and performance of electric batteries, while maintaining optimal energy efficiency. Active liquid cooling also allows for better management of heat spikes and maintains more stable temperatures, contributing to a longer lifespan for electric batteries.

[0030] According to one possible embodiment, the contact of the respective electrode with the first surface of the respective metal flange is implemented by bending the respective electrode around a respective slot among at least one slot of the electrically insulating blade, the bend of the respective electrode being partially or totally anchored on the first surface of the respective metal flange.

[0031] This maximizes the contact area between the electrode and the metal flange, while keeping them securely together in case of vibrations or shocks.

[0032] According to a third object of the present, an electric battery intended to be integrated into an electric motor vehicle is also proposed, said electric battery comprising an electric battery module according to any one of the embodiments of the first object of the present and a thermal regulation system connected to at least one plate of the module, said thermal regulation system being capable of modifying the temperature of said at least plate so as to regulate the temperature of the bagged cells of the electric battery module.

[0033] According to one possible embodiment, the electric battery is chosen from a lithium-ion battery, a lithium polymer battery or a lithium iron phosphate battery.

[0034] In these terms, a lithium-ion battery is also called a "Li-Ion" battery, a lithium polymer battery is also called a "LiPo" battery, and a lithium iron phosphate battery is also called a "LiFePO4" battery.

[0035] This provides various electrical energy storage and supply solutions for diverse applications, renewable, and requiring an efficient and reliable power supply.

[0036] According to a fourth object of this document, a manufacturing process for the device is also proposed according to any one of the embodiments of the first object of this document, in which the electrically insulating blade is obtained by overmolding carried out using a plastic injection mold.

[0037] This simplifies the manufacturing process by reducing the risk of assembly errors due to an excessive number of components, thereby also reducing manufacturing costs. Overmolding allows the complete part to be formed before insertion into the module. This also enables customization of the blade's shape, dimensions, and material to suit the application's needs, optimizing its overall performance. The plastic provides insulation between the cooling plate and the electrically conductive flange after the device is manufactured.

[0038] According to one embodiment of the fourth object of this document, at least one of the metal flanges is obtained by stamping.

[0039] This makes it easier and more precise to manufacture the device, since the metal flange can then rest directly on the thermal interface material, the thermal interface material acting as an electrical insulator. Brief description of the figures

[0040] Other features, details, and advantages will become apparent upon reading the detailed description below and analyzing the attached drawings, on which: There [ Fig 1 ] is a perspective view of a cooling device and a bagged cell according to an embodiment of the invention. The [ Fig 2 ] is a top view of a cooling device and a bagged cell according to an embodiment of the invention. The [ Fig 3 ] is a side view of a cooling device and a bag cell according to an embodiment of the invention.

[0041] Unless otherwise indicated, elements common or similar to several figures bear the same reference signs and have identical or similar characteristics, so that these common elements are generally not described again for the sake of simplicity. Description of the implementation methods

[0042] A cooling device for a bagged cell of an electric battery module according to an embodiment of the present invention, such a bagged cell, such an electric battery module and such an electric battery are described with reference to figures 1, 2 And 3 .

[0043] These figures illustrate various components of an electric battery intended for integration into an electric vehicle. This electric battery provides the chemical source of electrical energy used to power the vehicle's components, including its motor. The electric battery comprises a plurality of battery modules, for example, a 100-module battery module, these modules being interconnected.

[0044] In various examples, module 100 is equipped with and / or surrounded by plates, including plate 110, referred to as the lower plate 110, which is connectable to or connected to a thermal control system (not shown). Generally, module 100 includes other plates that enclose it. For example, module 100 may comprise six plates, including the lower plate 110, forming, for instance, a closed parallelepiped.

[0045] On plate 110 and inside the electric battery module 100, there is at least one bagged cell 100d. Generally, the module 100 comprises a plurality of bagged cells aligned, that is, substantially parallel to each other along their longest dimension. In the drawings, only cell 100d is shown for illustrative purposes.

[0046] In addition to maximizing the available space in module 100 to insert components including bagged cells, this arrangement also optimizes the efficiency of a thermal regulation system that can be connected or is connected to the plates of module 100, particularly plate 110, so as to regulate the temperature of all bagged cells, including cell 100d located on plate 110, simultaneously and uniformly.

[0047] The electric battery module 100 further includes a cooling device 10 for the bagged cells, this device being formed by an electrically insulating strip 11. This electrically insulating strip 11, which is for example rectangular in shape, is provided with one or more through slots and, in the example shown, seven slots 2a, 2b, 2c, 2d, 2e, 2f, 2g. Without limitation, these slots have the same shape, here a rectangular shape, so that the slots 2a, 2b, 2c, 2d, 2e, 2f, 2g can be distributed regularly. As illustrated, the slots 2a, 2b, 2c, 2d, 2e, 2f, 2g are for example aligned parallel to each other in one face of the electrically insulating blade 11. According to various variants not shown, these slots can be of various dimensions and orientations, and can also have shapes other than rectangular, for example trapezoids or circular holes.

[0048] On the electrically insulating strip 11 are arranged one or more metal clips 1a, 1b, 1c, 1d, 1e, 1f, preferably in the same number as the number of cells in the bag that comprise the module 100, each metal clip being arranged between two respective slots among the plurality of slots 2a, 2b, 2c, 2d, 2e, 2f, 2g. This arrangement allows for better regulation of the electrode temperature.

[0049] Although only one bagged cell is shown here, generally, a plurality of bagged cells are present. In general, each of the slots 2a, 2b, 2c, 2d, 2e, 2f, 2g of the electrically insulating strip 11 has a shape and dimensions adapted to allow the passage of an electrode from a respective bagged cell of the module 100. Regularly distributed rectangular slots thus allow the passage of electrodes from bagged cells arranged in the same way in the module 100 or on the plate 110. This arrangement optimizes the volume of the cooling device. It is therefore possible to reduce the mass of the module.

[0050] Without limitation, each of the slots 2a, 2b, 2c, 2d, 2e, 2f, 2g is designed to be traversed by at least one respective electrode of one of the bagged cells. This "comb"-shaped arrangement of the slots 2a, 2b, 2c, 2d, 2e, 2f, 2g of the electrically insulating blade(s) 11 of the cooling device 10 allows one, several, or all of the electrodes of the bagged cells that may comprise a given battery module 100 to pass through it.

[0051] Each of the metal flanges, which is made of copper or aluminum, for example, has a folded shape and comprises two surfaces. These two surfaces are located on either side of a given metal flange. As illustrated, one of these two surfaces of the metal flange 1d is adapted to be in contact with the electrode 4d of the cell 100d, this electrode 4d passing through the respective slot 2d. On the other side of the same metal flange 1d, a second surface is designed to be in contact with the plate 110.

[0052] The second surface of at least one metal flange is covered by a 3D thermal interface material adapted to thermally connect this second surface of the metal flange 1D to the plate 110. The plate 110 is capable of being actively thermally regulated. The contact between the second surface of the metal flange 1D and the plate 110 is indirect, as the 3D thermal interface material defines a layer separating the metal flange 1D and the plate 110.

[0053] This effect of the 3D thermal interface material, by thermally bonding the second surface of the 1D metal flange to the 110 plate, and thus the first surface of the 1D metal flange intended to be in contact with the 4D electrode of the 100D cell, allows, when the 4D electrode is in contact with the first surface, the creation of a heat-conducting link between the two surfaces, enabling efficient heat transfer. The use of a specific material placed between each metal flange and the plate designed for active cooling in a battery module ensures efficient cooling, thus preventing battery overheating. The material acts as a thermal conductor, efficiently transferring heat to maintain an optimal temperature in the module and the battery.

[0054] Advantageously, it has been observed that choosing certain area values ​​for the first and second surfaces of the metal flanges ensures particularly efficient heat transfer by the cooling device 10 used for one or more bagged cells of an electric battery module. When the first surface of at least one of the metal flanges is between 50 square millimeters and 2000 square millimeters, for example, 100 or 1000 square millimeters, optimal heat dissipation to the plate of the electric battery module is achieved. When the second surface of at least one of the metal flanges is between 30 square millimeters and 2000 square millimeters, for example, between 40 and 1500 square millimeters, improved thermal bonding with the plate of the electric battery module and good heat dissipation are achieved.By combining these choices of values, on the one hand for the first surface and on the other hand for the second surface, for example a first surface of 70 square millimeters in contact with the electrode and a second surface of 50 square millimeters covered with a thermal interface material, thus ensuring a double functionality of heat dissipation, an ideal balance of the two heat transfers is obtained, ensuring efficient heat dissipation from the electrode to the actively cooled plate.

[0055] Advantageously and according to one possible embodiment, the metal flanges 1a, 1b, 1c, 1d, 1e, 1f have a folded or curved structure, for example in the shape of an L.

[0056] In this context, an L-shaped or "L"-shaped metal flange is a metal flange with an angular configuration where one portion extends in a horizontal direction, while a second portion projects in a vertical direction, perpendicular to the horizontal, thus forming an L-shaped structure. Specifically, this L-shaped structure is such that the first surface of the corresponding metal flange is larger than the second surface of the same metal flange. Therefore, the possible contact area between the metal flange 1d and the electrode 4d is greater than the possible contact area between the metal flange 1d and the thermal interface material 3d.An "L" shaped flange allows optimal thermal bonding with a horizontal plate, promoting efficient cooling from above or below thanks to an angular configuration that maximizes the contact area with the plate.

[0057] Advantageously and according to one possible embodiment, all or part of the metal flanges 1a, 1b, 1c, 1d, 1e, 1f can also be C-shaped. In the present, a C-shaped metal flange is a metal flange which has a configuration where a first part of the flange extends in a first direction, called vertical, while two other secondary parts project each from an end of the first part in a second direction, called horizontal, and perpendicular to the first vertical direction, thus forming a flange open to the outside and whose two secondary parts are parallel to each other, defining a pair of corresponding parallel second surfaces, on which a pair of thermal interface materials can be used, or even different thermal interface materials.

[0058] A C-shaped flange ensures optimal thermal bonding with two horizontal plates, promoting efficient cooling above and below the bag cell, while utilizing the projecting secondary parts for better heat dissipation.

[0059] Advantageously, and according to one possible embodiment, all or part of the metal flanges 1a, 1b, 1c, 1d, 1e, 1f can also be U-shaped. In this context, a U-shaped metal flange is a metal flange configured in which a first portion extends in a first direction, referred to as horizontal, while two other secondary portions project from one end of the first portion in a second direction, referred to as vertical, and perpendicular to the first horizontal direction, thus forming a flange open upwards, with the two secondary portions parallel to each other. One of the two vertical secondary portions is located on the electrically insulating blade 11 of the cooling device 10, defining a corresponding first surface in the vicinity of a respective [surface / plate].The first part, horizontal, and the other secondary part, vertical, define in this case a pair of corresponding and transverse second surfaces, on which a pair of thermal interface materials can be used, or even different thermal interface materials.

[0060] A U-shaped flange provides optimal thermal connection with a vertical plate and a horizontal plate, allowing cooling by means of two plates transverse to each other, thanks to these secondary parts transverse between them, thus promoting efficient heat dissipation.

[0061] According to one possible embodiment, different materials can be used to form the electrically insulating blade 11 of the cooling device 10. Advantageously, it has been observed that the choice of polyamide, denoted "PA", polybutylene terephthalate, denoted "PBT" and / or polycarbonate acrylonitrile butadiene styrene, denoted "PC-ABS", provides particularly high thermal and mechanical resistance for a cooling device for a bag cell.

[0062] For example, in the configurations described herein, PA provides robust mechanical strength and good electrical insulation between the electrodes of different bagged cells aligned and close together, reducing the risk of electrical short circuits. In the example of an electrically insulating strip containing PBT, heat transfer between the electrodes and the metal flanges is facilitated, contributing to more efficient heat dissipation. In the case of PC-ABS, the electrically insulating strip offers an optimal compromise between heat dissipation and mechanical impact resistance, which is particularly advantageous for use in an electric vehicle battery module.

[0063] Advantageously, and depending on a possible implementation, the type(s) of thermal interface material(s) 3a, 3b, 3c, 3d, 3e, 3f are chosen to guarantee maximum thermal conductivity. For example, a thermal interface material consists of a thermally conductive adhesive, which can be formulated with or without silicone, to ensure both mechanical bonding and optimal thermal conductivity. It can also be a two-part adhesive incorporating thermally conductive fillers.

[0064] In addition, an example of a suitable thermal interface material may be in the form of a thermally conductive adhesive or thermally conductive sealant, based on one or more moisture-activated components and containing thermally conductive fillers.

[0065] Yet another type of thermal interface material can be a thermally conductive pad or cushion, which may or may not contain silicone. This pad or cushion ensures efficient thermal conductivity while being suitable for various applications.

[0066] The preceding embodiments and the variants described can be applied directly to the case of an electric battery module 100 comprising a cooling device 10. By passing the respective electrodes of each bag cell through a corresponding slot, each of these electrodes can be brought into contact with the first surface of a respective metal flange to allow heat transfer.

[0067] Advantageously, and according to one possible embodiment, contact between each electrode and a first surface of the respective metal flange can be achieved by bending or folding the electrode around the slot. As an illustrative example for a 100d bag cell, one of its electrodes 4d can be tilted or flexed over the edge of the respective slot 2d located near the 100d bag cell, causing it to bend or curl and contact the respective metal flange 1d located on the electrically insulating strip 11. This creates a fold in the respective electrode 4d over the first surface of the respective metal flange 1d, thus achieving partial or complete anchoring. This folding can be performed for all the electrodes of each bag cell.

[0068] Advantageously and according to one possible embodiment, mounting a plurality of bagged cells on one or more plates, for example plate 110, which can be connected with an active cooling system, allows the metal flanges 1a, 1b, 1c, 1d, 1e, 1f of the electrically insulating blade 11 to transfer heat from the cell electrodes to corresponding thermal interface materials 3a, 3b, 3c, 3d, 3e, 3f on these metal flanges, which in turn are in contact with at least one plate, allowing for active and efficient cooling.

[0069] Advantageously, and according to one possible embodiment, active liquid cooling of the plate 110 or the plates of the electric battery module 100 allows the electrodes of the bagged cells to be maintained at safe and optimal operating temperatures. Since the modules comprising these bagged cells and / or the batteries comprising these modules generate heat during charging, discharging, and periods of intense use, the circulation of a liquid, such as a heat transfer fluid (for example, a mixture of water and glycol or demineralized water), within or in contact with the plates of these modules provides active cooling.For example, a heat transfer fluid circulating through conduits integrated into the conductive plate absorbs the heat transferred by the second surface of the metal flanges 1a, 1b, 1c, 1d, 1e, 1f via the thermal interface materials 3a, 3b, 3c, 3d, 3e, 3f, and is then directed to a heat exchanger where the heat is dissipated. Applying a continuous cycle maintains the cells at appropriate temperatures to ensure optimal operation.

[0070] Advantageously and according to one possible implementation, a thermal regulation system (not shown) can be connected to plate 110 or to any plate of the module, in order to modify and / or regulate the temperature of this plate.

[0071] For example, in the case of an electric battery module 100 suitable for use in an electric vehicle, such a thermal regulation system may include thermal sensors connected to the plate 110. These sensors enable constant monitoring of the temperature of the bagged cells and / or communication with an automated control system. Based on pre-established parameters of the cooling device 10 and / or the electric battery module 100, it is thus possible to precisely adjust the flow of the coolant through channels integrated into the plate, thereby providing dynamic temperature control of the cells according to loads, external conditions, and / or vehicle usage. This also makes it possible to maintain the cells at desired temperature levels while avoiding the risk of overheating associated with rapid charging or intensive use of the electric vehicle.

[0072] Advantageously and economically, the cooling device 10 can be manufactured simply and quickly using various embodiments. To this end, starting with the selection of a suitable insulating material to ensure electrical insulation between the electrodes of the bagged cells, electrically insulating strips can be formed with a thickness and slots of a size that facilitates subsequent connection to the bagged cell electrodes.

[0073] For example, the electrically insulating blade 11 can be overmolded using a plastic injection mold. One or more plastic injection molds can be designed depending on the type of electrically insulating blade 11 desired. This mold or these molds may, for example, include cavities corresponding to the shape of the electrodes of the bagged cells in the electric battery module. Liquid plastic is then injected into the mold to form the electrically insulating blade 11 with specific slots; the injected plastic is then cooled to solidify and form the blade structure with the slots.

[0074] In one possible embodiment, by repeating these steps, this manufacturing process makes it possible to obtain a plurality of electrically insulating strips, onto which the metal flanges can be added. The assembly of an electrically insulating strip 11 onto a plate 110 by connecting the metal flanges 1a, 1b, 1c, 1d, 1e, 1f can be carried out simultaneously or successively, while the passage of the electrodes of the bagged cells through the slots of an electrically insulating strip 11 allows the cell(s) to be connected to the metal flanges while maintaining reliable electrical insulation. This promotes efficient heat transfer from the bagged cells to the plate while preserving the electrical integrity of the bagged cells.

[0075] In one possible embodiment, a connection or bonding of metal flanges with an electrically insulating blade 11 can be achieved by various means such as welding, brazing, the use of adhesives, or mechanical fasteners. The metal flanges 1a, 1b, 1c, 1d, 1e, 1f can also simply be brought into contact with the blades or positioned sufficiently close together.

[0076] In one advantageous embodiment, the metal flanges 1a, 1b, 1c, 1d, 1e, 1f are preferably manufactured by stamping, for example, from metal sheets selected according to their thickness and mechanical strength. Stamping can then be carried out using corresponding dies to precisely cut these metal flanges, for example, to ensure uniform dimensions to facilitate their connection with a given type of bagged cell electrodes.

[0077] This allows for advantageous manufacturing in terms of dimensional accuracy, production speed and integration of the metal flanges 1a, 1b, 1c, 1d, 1e, 1f into the cooling device 10.

Claims

1. Cooling device (10) for at least one pouch cell (100d) of an electric battery module (100), the cooling device (10) comprising: - an electrically insulating strip (11) provided with a plurality of slots (2a, 2b, 2c, 2d, 2e, 2f, 2g), each slot being designed for a respective electrode (4d) of the at least one pouch cell (100d) to pass therethrough, and - a plurality of metal flanges (1a, 1b, 1c, 1d, 1e, 1f), each metal flange (1a, 1b, 1c, 1d, 1e, 1f) being arranged between two slots of the plurality of slots (2a, 2b, 2c, 2d, 2e, 2f, 2g) and comprising a first surface suitable for being in contact with the electrode (4d) passing through the respective slot, and comprising at least one second surface covered by a thermal interface material (3a, 3b, 3c, 3d, 3e, 3f), the thermal interface material (3a, 3b, 3c, 3d, 3e, 3f) being suitable for thermally connecting the second surface of the metal flange (1a, 1b, 1c, 1d, 1e, 1f) to at least one plate (110) of the electric battery module (100), said plate (110) being capable of being actively thermally regulated.

2. Cooling device (10) according to claim 1, wherein the first surface of at least one of the metal flanges (1a, 1b, 1c, 1d, 1e, 1f) is between 50 square millimeters and 2000 square millimeters and / or wherein the second surface of at least one of the metal flanges (1a, 1b, 1c, 1d, 1e, 1f) is between 30 square millimeters and 2000 square millimeters.

3. Cooling device (10) according to one of claims 1 or 2, wherein at least one of the metal flanges (1a, 1b, 1c, 1d, 1e, 1f) is L-shaped.

4. Cooling device (10) according to one of claims 1 or 2, wherein at least one of the metal flanges (1a, 1b, 1c, 1d, 1e, 1f) is C-shaped.

5. Cooling device (10) according to one of claims 1 or 2, wherein at least one of the metal flanges (1a, 1b, 1c, 1d, 1e, 1f) is U-shaped.

6. Cooling device (10) according to any one of the preceding claims, wherein the electrically insulating strip (11) is formed partly or wholly of a material selected from polypropylene, polyethylene, ceramic, glass fiber reinforced polymer, thermoplastic material, thermoplastic composite material, polyamide, polybutylene terephthalate and / or polycarbonate acrylonitrile butadiene styrene.

7. Cooling device (10) according to any one of the preceding claims, wherein the thermal interface material is selected from a silicone-free thermally conductive adhesive, a thermally conductive adhesive comprising silicone, an adhesive comprising a thermally conductive filler, a silicone-free thermally conductive mastic, a thermally conductive mastic comprising silicone, a one-part curing adhesive without thermally conductive filler, a two-part curing adhesive without thermally conductive filler, a one-part curing adhesive comprising at least one thermally conductive filler, a two-part curing adhesive comprising at least one thermally conductive filler, a silicone-free thermally conductive pad and / or a thermally conductive pad comprising silicone.

8. Cooling device (10) according to any one of the preceding claims, wherein at least two of the slots (2a, 2b, 2c, 2d, 2e, 2f, 2g) of the electrically insulating strip (11) each comprise an opening of substantially rectangular shape, the at least two slots being parallel to one another.

9. Electric battery module (100) comprising the cooling device (10) according to any one of the preceding claims, the electric battery module (100) further comprising the at least one pouch cell (100d) and the at least one plate (110), wherein the respective electrode (4d) of the at least one pouch cell (100d) passes through at least one slot (2a, 2b, 2c, 2d, 2e, 2f, 2g) of the electrically insulating strip (11), the respective electrode (4d) being in contact with the first surface of a respective metal flange (1d) of the plurality of metal flanges (1a, 1b, 1c, 1d, 1e, 1f), the at least one second surface of the respective metal flange (1d) being covered by the thermal interface material (3d), the thermal interface material (3d) thermally connecting the second surface of the respective metal flange (1d) to the at least one plate (110), the at least one plate (110) being capable of being actively thermally regulated.

10. Electric battery module (100) according to claim 9, wherein the respective electrode (4d) is brought into contact with the first surface of the respective metal flange (1d) by bending the respective electrode (4d) around a respective slot (2d) of the at least one slot (2a, 2b, 2c, 2d, 2e, 2f, 2g) of the electrically insulating strip (11), the bend of the respective electrode (4d) being partially or totally anchored to the first surface of the respective metal flange (1d).

11. Electric battery for integration in an electric motor vehicle, said electric battery comprising an electric battery module (100) according to any one of claims 9 to 10 and a thermal regulation system connected to the at least one plate (110) of the module, said thermal regulation system being capable of modifying the temperature of said at least one plate so as to regulate the temperature of the pouch cells (100d) of the electric battery module (100).

12. Method for producing the device according to any one of claims 1 to 8, wherein the electrically insulating strip (11) is obtained by overmolding implemented by means of a plastic injection mold.

13. Method for producing the device according to claim 12, wherein at least one of the metal flanges (1a, 1b, 1c, 1d, 1e, 1f) is obtained by stamping.