Battery assembly, motor vehicle equipped with such assembly, and production method for such assembly

Abstract

The invention relates to a battery assembly (10) comprising:-a receiving support (20) having a cooling circuit (27) in a bottom portion (22) delimited by two side walls (23, 25); and-a battery module (30) comprising a front portion (34) provided with a front wall (34A) delimited by side walls (34B) extending parallel to the side walls of the support, the front wall and the side walls of the module delimiting a housing for receiving a plurality of storage cells held in the module by at least one holding element (32), the assembly includes at least one removable gasket (40) positioned between the side wall of the support and the side wall of the module. The invention also relates to an associated motor vehicle and to a method for producing such a component.

Description

Technical Field

[0001] The present invention generally relates to the field of storage batteries.

[0002] More particularly, the present invention relates to a storage battery assembly.

[0003] The present invention also relates to a motor vehicle equipped with such an assembly.

[0004] Finally, the present invention relates to a method for manufacturing such a storage battery assembly. Background Art

[0005] Motor vehicles having an electric powertrain (including vehicles having a hybrid combustion and electric powertrain) are generally equipped with an electric motor supplied with current by a plurality of battery modules.

[0006] Conventionally, each battery module is formed by a casing that houses a plurality of battery cells.

[0007] For example, such a battery module is known from document EP 3637495.

[0008] In this document, the casing has a rear portion that is covered by a cover member in order to define a receiving housing for storing the cells. The rear portion has a U-shaped portion that is integrally formed and has a bottom wall and two side walls. Two lateral cover plates make it possible to complete the side walls of the rear portion in order to obtain a closed structure.

[0009] The cover member cooperates with the rear portion by snap fastening. Thus, the entire casing (together with the cover member) forms a rigid structure, which makes it possible to house the battery cells.

[0010] A heat-conducting layer is arranged at the bottom wall of the rear portion (typically the U-shaped base of the U-shaped portion) in order to allow cooling of the battery cells.

[0011] In such a configuration, the battery cells are adhesively bonded to the bottom wall of the rear portion.

[0012] However, such a configuration (having a U-shaped rear portion that creates a rigid structure for housing the battery cells) does not make it possible to optimally manage the expansion of the cells caused by the thermal forces generated by the cells themselves during their charging and discharging. Summary of the Invention

[0013] In order to overcome the above drawbacks, the present invention proposes to improve the manufacture of the storage battery assembly.

[0014] More particularly, the present invention proposes a storage battery assembly that includes:

[0015] - A receiving support for a battery module, the receiving support having a cooling circuit in a bottom portion delimited by at least two side walls, and

[0016] - A battery module having a front portion provided with a front wall delimited by side walls that extend parallel to the side walls of the receiving support, the front wall and side walls of the battery module defining a housing for receiving a plurality of storage cells, the plurality of storage cells being held in the battery module by at least one holding element.

[0017] According to the invention, the battery assembly includes at least one removable spacer positioned between one of the side walls of the receiving support and the side wall of the battery module.

[0018] Thus, according to the invention, the presence of the removable spacer between the side wall of the front portion of the battery module and the side wall of the receiving support enables the lateral movement of the wall of the front portion to be restricted. This, in turn, enables the stress applied to the side wall of the front portion to be limited to a stress that remains within the elastic deformation range of the material forming the front portion, particularly during the stage of charging the battery cells. Finally, this enables the prevention of breakage of the elements forming the battery module.

[0019] In addition, the use of elements for holding the battery cells enables these cells to be in direct contact with the cooling circuit and thus improves the heat exchange that causes the cooling of the battery module.

[0020] Other advantageous and non-limiting features of the battery assembly according to the invention, considered individually or in any technically possible combination, are as follows:

[0021] - Each spacer includes a metal tab to which an elastically deformable element is fastened;

[0022] - The elastically deformable element is positioned between the metal tab and the side wall of the battery module;

[0023] - The elastically deformable element has a face facing the side wall of the battery module, the face having a convex shape;

[0024] - The elastically deformable element is formed of melamine foam;

[0025] - The elastically deformable element is adhesively bonded to the metal tab;

[0026] - For each spacer, locking means are provided for locking a part of the spacer in question against the front wall of the battery module;

[0027] - Each locking means is welded to the front wall of the battery module;

[0028] - Each holding element is in the form of a metal strip that extends between a first part and a second part of a side wall of the battery module facing the front wall of the battery module;

[0029] - At least three metal strips are provided;

[0030] - Each metal strip has a thickness greater than 0.2 mm;

[0031] - At least six spacers are provided;

[0032] - A plurality of spacers are provided and are positioned against two opposite side walls of the receiving support;

[0033] - A heat-conducting paste is provided between the cooling circuit and the plurality of storage cells; and

[0034] - The receiving support includes means for fastening the battery module, and the fastening means is intended to cooperate with fastening elements on the side walls of the battery module.

[0035] The invention also relates to a motor vehicle comprising a battery assembly as described above.

[0036] The invention also relates to a method for manufacturing a battery assembly, the method comprising the following steps:

[0037] - Providing a receiving support for a battery module, the receiving support having a cooling circuit in a bottom part delimited by at least two side walls,

[0038] - Providing a battery module having a front wall delimited by side walls that extend parallel to the side walls of the receiving support, the front wall and side walls of the battery module defining a housing for receiving a plurality of storage cells, the plurality of storage cells being held in the battery module by at least one holding element so as to be placed in contact with the cooling circuit,

[0039] - Positioning the battery module in the receiving support so as to place the plurality of battery cells in contact with the cooling circuit, and

[0040] - Positioning at least one removable spacer between the side walls of the receiving support and the side walls of the battery module.

[0041] Of course, the various features, variations and embodiments of the present invention can be combined with each other in various combinations as long as they are not incompatible or mutually exclusive. Description of the Drawings

[0042] The following description, with reference to the accompanying drawings given by way of non-limiting example, will provide a better understanding of the content of the present invention and how the present invention may be implemented.

[0043] In the drawings:

[0044] Figure 1 depicts a schematic view of a motor vehicle equipped with a battery assembly according to the present invention;

[0045] Figure 2 is Figure 1 an exploded view of the battery assembly; and

[0046] Figure 3 is a schematic view of a spacer positioned between a receiving support and a battery module according to the present invention. Detailed Description

[0047] Figure 1 Depicts a motor vehicle 1 equipped with a battery assembly 10 according to the present invention.

[0048] This motor vehicle 1 is a motor vehicle with an electric or hybrid powertrain provided with an electric motor. At least one battery assembly 10 is designed to supply current to the electric motor of the motor vehicle 1.

[0049] As Figure 1 and Figure 2 shown, the battery assembly 10 includes a receiving support 20 for receiving battery modules (hereinafter also referred to as "receiving support 20") and at least one battery module 30 (hereinafter also referred to as "module 30").

[0050] For example, in this case, the receiving support 20 is fixed to the motor vehicle 1, and the battery module 30 is assembled in the receiving support 20.

[0051] Figure 2 Depicts a schematic exploded perspective view of the elements included in the battery module 30. This module 30 includes a front portion 34 and a plurality of battery cells (the battery cells are not depicted in the figure).

[0052] In this specification, the terms "front" and "rear" are used with respect to the positioning of an element on a receiving support (the element in question is assembled on the receiving support). The rear side of this element represents the side facing the receiving support on which the element is assembled, while the front side represents the side facing away from this receiving support.

[0053] As Figure 2 ​​​As shown, the front portion 34 of the battery module 30 includes a front wall 34A, which is delimited by side walls 34B extending from the front wall 34A. The side walls 34B of the front portion 34 extend towards the receiving support 20. In other words, the side walls 34B of the front wall 34 extend from the front wall 34A towards the rear of the battery module 30. Therefore, this side wall 34B has four pairs of orthogonally arranged sides.

[0054] The front portion 34 is formed of aluminum, for example.

[0055] As Figure 2 shown, the side walls 34B of the front portion have fastening elements 34C at their corners for fastening to the receiving support 20 of the motor vehicle 1.

[0056] In this case, these fastening elements 34C are in the form of posts, which are penetrated by longitudinal openings designed to cooperate with complementary fastening means 22A present on the receiving support 20.

[0057] A plurality of battery cells are positioned in a receiving housing delimited by the front wall 34A and the side walls 34B of the front portion 34. The battery cells are positioned adjacent to each other, for example. In this case, there are, for example, sixteen battery cells.

[0058] For example, in this case, the cells are cells with a flexible casing, i.e., cells with a casing that may deform when inserted into the housing and when being charged and discharged. Advantageously, the front portion 34 of the battery module 30 makes it possible to inhibit the deformation of the cells due to its above-mentioned characteristics.

[0059] More particularly, a battery with a flexible casing has a flexible outer casing, the interior of which contains an electrolyte of an organic solution or a solution based on carbonate and lithium salt.

[0060] For example, it is a lithium-ion electrolyte encapsulated in a casing made of a plastic film surrounded by a laminated aluminum film. The plastic film is intended to insulate the electrolyte contained in the cell from the aluminum film.

[0061] These cells with flexible casings, which are well-known to those skilled in the art, will not be described in more detail here.

[0062] In fact, a plurality of battery cells are held in the front portion 34 of the battery module by at least one holding element 32. In other words, since the front portion 34 does not have a wall opposite the front wall 34 (which might have enabled holding the cells), the holding element 32 makes it possible to support the plurality of battery cells such that the said plurality of battery cells are attached to the front portion 34. The battery cells are thus held in the receiving housing delimited by the front wall 34A and the side walls 34B of the front portion 34.

[0063] In this case, the retaining element 32 is in the form of a metal strip. This metal strip 32 extends between a first part 35A and a second part 35B (opposite to the first part 35A) of the side wall 34B of the front part 34, so as to retain the battery cell in the housing defined by the front wall 34A and the side wall 34B of the front part 34 (and thus, so as to retain the battery cell in the module 30).

[0064] In other words, this metal strip 32 extends across the open part of the front part 34, which open part is positioned facing the front wall 34A. In practice, each metal strip 32 extends between the two long sides of the side wall 34B of the front part 34, so as to pass under a plurality of storage cells and lock them against the front wall 34A of the front part 34.

[0065] As Figure 2 depicted, in this case at least three metal strips 32 are provided.

[0066] Each metal strip 32 is formed, for example, of steel. In this case, the free end of each metal strip 32 is welded to the side wall 34B of the front part 34.

[0067] In this case, each metal strip has a thickness greater than or equal to 0.2 millimeters (mm).

[0068] Finally, in this case the battery module 30 is formed by the front part 34 that houses the battery cells, which battery cells are retained by the metal strips 32.

[0069] In order to be able to supply current to the electric motor of the motor vehicle 1, the battery module 30 (formed by the front part 34 that houses the battery cells retained by the metal strips 32) is positioned in the receiving support 20.

[0070] As Figure 2 depicted, in this case, the receiving support 20 has a generally parallelepiped shape. The receiving support includes a rectangular bottom part 22, from the edges of which three side walls 23, 24, 25 stand up, which three side walls define therebetween a housing 21 for receiving the battery module 30. In this case, two side walls 23, 25 are positioned facing each other and opposite to the side wall 24, and the receiving support 20 also has a side wall part that extends facing this side wall 24 (but is not depicted for the sake of clarity in Figure 2 ). The side walls 23, 24, 25 extend parallel to the side wall 34B of the front part 34.

[0071] The receiving support 20 includes a cooling circuit 27 at its bottom part 22. The cooling effect is achieved, for example, by circulating water in the cooling circuit 27.

[0072] The cooling circuit 27 is designed to conductively cool the battery cells. For this purpose, a plurality of battery cells in the receiving housing defined in the front part 34 and held by the metal strip 32 of the battery module 30 are positioned in contact with the bottom part 22 of the receiving support 20. Thus, the battery cells are in direct contact with the cooling circuit 27, thereby enabling a significant improvement in the efficiency of heat exchange.

[0073] To further improve the efficiency of the conduction phenomenon (and thus the cooling), a thermal paste 26 is positioned between the bottom part 22 of the receiving support 20 and the plurality of battery cells of the module 30.

[0074] This thermal paste 26 enables the prevention of the formation of air gaps between the cooling circuit 27 and the battery cells, thereby enabling the improvement of the conduction phenomenon and thus the improvement of the cooling.

[0075] For example, in this case, the receiving support 20 is formed to be impermeable to water droplets or dust that may enter the battery assembly 10. In this case, the impermeability is evaluated according to the IP67 level of the EN60529 standard.

[0076] To enable the module 30 to be fastened to the receiving support 20, the bottom part 22 of the receiving support 20 includes fastening means 22A. These fastening means 22A are designed to cooperate with the fastening elements 34C of the front part 34 of the side wall 34B of the module 30. There are as many fastening means 22A as there are fastening elements 34C on the side wall 34B of the front part 34 of the module 30.

[0077] In this case, as Figure 2 depicted, the fastening means 22A are formed by lugs 22A protruding from the bottom part 22 of the receiving support 20. These lugs 22A extend from the bottom part 22 towards the front of the receiving support 20.

[0078] In this case, each lug 22A cooperates with a corresponding longitudinal opening of the post 34C of the side wall 34B of the front part 34 by nesting.

[0079] As described above, the battery cells expand during their operation (charging and discharging). This expansion causes the front wall 34A and the side walls 34B of the front part 34 and the metal strip 32 to expand.

[0080] Advantageously, according to the present invention, to inhibit this expansion and expansion phenomenon (which may particularly cause these various elements to break), the battery assembly 10 includes at least one removable spacer 40 ( Figure 2 and Figure 3) The at least one removable spacer is positioned between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front portion 34 (of the battery module 30).

[0081] In the present specification, "removable" should be understood to mean that the spacer 40 can be removed from the battery assembly 10 (even after having been inserted into the assembly 10) without having to disassemble (or even damage) a part of this spacer 40 or the assembly 10.

[0082] As can be seen in Figure 2 , six spacers 40 are provided in this case. The spacers 40 are positioned, for example, at the opposite side walls 23, 25 of the receiving support 20. More particularly, in this case, each spacer 40 is positioned at the end of each metal strip 32 fastened to the side wall 34B of the front portion 34 (i.e., facing that end).

[0083] In fact, according to the invention, each spacer 40 comprises a metal tab 42 and an elastically deformable element 44 ( Figure 2 and Figure 3 ).

[0084] In the present specification, the term "elastically deformable" should be understood to mean an element that is capable of undergoing reversible deformation when a force (such as a compressive force) is applied to it (when the force is no longer applied, the elastically deformable element resumes its initial shape and dimensions).

[0085] In this case, the elastically deformable element 44 is preferably compressible (i.e., it can be deformed by a compressive force applied to it, the compression axis being parallel to the longitudinal axis of the elastically deformable element 44).

[0086] As Figure 2 and Figure 3 show, the metal tab 42 has an L-shape, the base 42A of which is positioned at the front of the battery module 30. In other words, the branch 42B of the L-shape extends parallel to the side walls 23, 25 of the receiving support 20 and parallel to the side wall 34B of the front portion 34.

[0087] In this case, the metal tab 42 is formed of steel, for example by bending a steel strip to obtain the L-shape. In this case, the base 42A of the L-shape has a length between 15 mm and 40 mm, preferably about 25 mm. The branch 42B of the L-shape has a length between 70 mm and 100 mm, preferably about 86 mm. Finally, in this case, the width of the metal tab 42 is between 15 mm and 40 mm, preferably about 30 mm.

[0088] As in Figure 2 and Figure 3As can be seen, the elastically deformable element 44 is positioned between the metal tab 42 and the side wall 34B of the front part 34 of the module 30.

[0089] In this case, the elastically deformable element 44 has an overall parallelepiped shape. The elastically deformable element is in particular provided with a face 44B having a convex shape.

[0090] Advantageously, if the compressive stress is very low, this convex shape theoretically enables point contact to be achieved between the elastically deformable element 44 and the side wall 34B of the front part 34. This thus makes it easier to insert the gasket 40 between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front part 34. This also makes it possible to reduce the static indeterminacy of the module 30 with respect to the receiving support 20. It is thus possible to implement better positioning of the battery module 30 on the receiving support 20.

[0091] In order to obtain a gasket effect of the battery module 30 on the receiving support 20, the elastically deformable element 44 has a thickness strictly greater than the available space between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front part 34. It is thus possible to insert the gasket 40 between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front part 34 by compressing the elastically deformable element 44. This elastically deformable element resumes its initial shape after it has been inserted in order to lock the battery module 30 in the receiving support 20 (along an axis orthogonal to the long side of the side wall, etc.).

[0092] In this case, the elastically deformable element 44 is formed, for example, of melamine foam.

[0093] In fact, the elastically deformable element 44 is fastened to the metal tab 42. More particularly, the elastically deformable element is fastened to a branch 42B of the metal tab 42. For example, in this case, the elastically deformable element is adhesively bonded to the metal tab 42.

[0094] The elastically deformable element 44 is fastened to the metal tab 42 at the face opposite the face 44B having a convex shape. As Figure 2 and Figure 3 depicted, the face 44B having a convex shape faces the side wall 34B of the front part 34 of the module 30.

[0095] As in Figure 2 and Figure 3It can also be seen that the elastically deformable element 44 is fastened to the branch 42B of the metal tab 42 at a distance from the base 42A. This thus makes it possible to define a space 45 (and thus a clearance) between the elastically deformable element 44 and the base 42A of the metal tab 42, in order to make it easier to remove the gasket 40 from the battery assembly 10.

[0096] In order to hold the gasket 40 in place between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front part 34, locking means 50 are provided for locking the gasket 40 in question. In this case, one locking means 50 is provided for each gasket 40.

[0097] In this case, this locking means 50 is formed by a metal element which is designed to hold the base 42A of the metal tab 42 against the front wall 34A of the front part 34. In other words, in this case, the base 42A of the metal tab 42 is inserted between the locking means 50 and the front wall 34A of the front part 34 in order to lock the gasket 40 in place. The locking means 50 is formed, for example, by a metal clip which is designed to clamp the base 42A of the metal tab 42 against the front wall 34A of the front part 34 of the module 30.

[0098] In this case, the locking means 50 is welded to the front wall 34A of the front part 34.

[0099] In a variant, the locking means can be fastened to the front wall of the front part by any other mechanical fastening means. For example, the locking means can be adhesively bonded to the front wall.

[0100] According to a variant embodiment, the battery cells can be held in the front part of the module in a different manner. For example, it is conceivable to provide holding elements which are located at the rear of the front wall and which cooperate with the various cells in order to fasten them to the front part of the battery module. For example, the storage cells can be adhesively bonded to the rear of the front wall.

[0101] According to another variant embodiment, the holding elements for holding the cells can be formed by the rear part of the module which cooperates with the front part (the rear part and the front part thus forming a housing for receiving a plurality of storage cells). In other words, in this variant, the storage cells are received in a housing, the rear part of which forms the holding element within the meaning of the present invention.

[0102] According to another variant embodiment, the gasket can be locked onto the front part of the module by means of a snap-fastening cooperation with the locking means.

[0103] The above embodiments relate only to the receiving support associated with the battery module.

[0104] The present invention is of course applicable to the case of including a plurality of battery modules in a motor vehicle. In this case, a plurality of battery assemblies 10 juxtaposed adjacent to each other in the motor vehicle can be considered.

[0105] The present invention is also applicable to the case of a single receiving support for accommodating a plurality of battery modules (the battery modules are positioned adjacent to each other, for example, on the bottom of a single receiving support). In this case, a gasket element is positioned between two adjacent battery modules. Therefore, the geometry of the elastically deformable element is adapted to this configuration.

[0106] The present invention also relates to a method for manufacturing a battery assembly 10.

[0107] This method first includes the step of providing a receiving support 20.

[0108] This method also includes the step of providing battery modules 30. In practice, this step includes providing a front portion 34 that houses battery cells, and these battery cells are held (in the front portion 34) by metal strips 32.

[0109] Then, this manufacturing method includes the step of positioning a thermal paste 26 at the bottom portion 22 of the receiving support 20. Then the battery module 30 is placed on this thermal paste 26. In other words, the module 30 is placed on the receiving support 30. This step aims to bring a plurality of battery cells into contact with a cooling circuit 27.

[0110] In fact, the positioning of the module 30 on the receiving support 20 includes the cooperation between the longitudinal openings of each post 34C and the corresponding lugs 22A of the bottom portion 22 of the receiving support 20 through nesting. Once the module 30 has been positioned on the receiving support 20, a space can be obtained between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front portion 34.

[0111] Then the manufacturing process continues by positioning at least one removable gasket 40 between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front portion 34. In this case, it is proposed to position six gaskets 40, with three gaskets positioned between the side wall 23 of the receiving support 20 and the side wall 34B of the front portion 34, and the other three gaskets positioned between the side wall 25 (opposite to the side wall 23) of the receiving support 20 and the side wall 34B of the front portion 34.

[0112] In fact, pressure is applied to each gasket 40 in order to insert it between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front portion 34. Therefore, this pressure enables the elastically deformable element 44 to be compressed when each gasket 40 is inserted.

[0113] Once each spacer 40 is in place between the side walls 23, 25 of the receiving support 20 and the side wall 34B of the front portion 34, the elastically deformable element 44 resumes its shape and dimensions. Thus, the spacers 40 enable the battery module 30 to be positioned and held on the receiving support 20.

[0114] To lock this positioning, the base 42A of the metal tab 42 of each spacer 40 is inserted into the corresponding locking device 50. More particularly, the base 42A of the metal tab 42 is inserted between the locking device 50 and the front wall 34A of the front portion 34 so as to lock the spacer 40 in place.

[0115] Finally, due to the presence of the spacers, the lateral movement of the walls of the front portion of the module is restricted. This thus makes it possible to ensure that the resultant stress applied to the said front portion of the module and to the metal strips remains below the stress known as the plastic yield stress, so as to remain within the elastic deformation range of the materials of the front portion and of the metal strips. In other words, this thus makes it possible to limit the occurrence of stresses that would, for example, cause shearing of the metal strips.

[0116] Thus, these spacers make it possible to inhibit the phenomenon of expansion of the front portion (and of the metal strips) caused by the expansion of the battery cells during their operation.

[0117] In addition, the use of metal strips makes it possible to hold the battery cells in the front portion of the module without implementing the process of adhesively bonding these cells to the bottom wall. The heat exchange is significantly improved by the battery cells in direct contact with the cooling circuit.

[0118] Moreover, eliminating this adhesive bonding process makes it possible to simplify the manufacture of the battery assembly and also advantageously reduce its manufacturing cost.

[0119] Finally, in terms of disassembling the battery assembly, the use of removable spacers also makes practical sense. Specifically, due to the space 45 provided between the elastically deformable element 44 and the base 42A of the corresponding metal tab 42, the operator can easily insert a tool in order to remove the spacer 40 in question from the battery assembly 10. This thus makes it easier to replace the elements of the battery assembly and also makes the maintenance process easier.

Claims

1. A battery assembly (10), comprising: - a receiving support (20) for a battery module, the receiving support (20) having a cooling circuit (27) in a bottom portion (22) defined by at least two side walls (23, 25), and - a battery module (30) having a front portion (34) provided with a front wall (34A) defined by side walls (34B), the side walls (34B) extending parallel to the side walls (23, 25) of the receiving support (20), the front wall (34A) and the side walls (34B) of the battery module (30) defining a housing for receiving a plurality of storage cells, the plurality of storage cells being held in the battery module (30) by at least one holding element (32), characterized in that the battery assembly (10) comprises at least one removable spacer (40) positioned between one of the side walls (23, 25) of the receiving support (20) and the side wall (34B) of the battery module (30).

2. The battery assembly (10) according to claim 1, wherein each spacer (40) comprises a metal tab (42) to which an elastically deformable element (44) is fastened.

3. The battery assembly (10) according to claim 2, wherein the elastically deformable element (44) is positioned between the metal tab (42) and the side wall (34B) of the battery module (30).

4. The battery assembly (10) according to claim 2 or 3, wherein the elastically deformable element (44) has a face (44B) facing the side wall (34B) of the battery module (30), the face having a convex shape.

5. The battery assembly (10) according to any one of claims 1 to 4, wherein for each spacer (40), locking means (50) are provided for locking a part of the spacer (40) against the front wall (34A) of the battery module (30).

6. The battery assembly (10) according to any one of claims 1 to 5, wherein each holding element (32) is in the form of a metal strip extending between a first part (35A) and a second part (35B) of the side wall (34B) of the battery module (30) facing the front wall (34A) of the battery module.

7. The battery assembly (10) according to claim 6, wherein at least three metal strips are provided.

8. The battery assembly (10) according to any one of claims 1 to 7, wherein at least six spacers (40) are provided.

9. The battery assembly (10) according to any one of claims 1 to 8, wherein a plurality of spacers (40) are provided, the spacers being positioned against two opposite side walls (23, 25) of the receiving support (20).

10. A motor vehicle (1) comprising a battery assembly (10) according to any one of claims 1 to 9.

11. A method for manufacturing a battery assembly (10), the method comprising the following steps: - providing a receiving support (20) for a battery module (30), the receiving support (20) having a cooling circuit (27) in a bottom part (22) delimited by at least two side walls (23, 25), - providing a battery module (30) having a front wall (34A) delimited by a side wall (34B), the side wall (34B) extending parallel to the side walls (23, 25) of the receiving support (20), the front wall (34A) and the side wall (34B) of the battery module (30) defining a housing for receiving a plurality of storage cells, the plurality of storage cells being held in the battery module (30) by at least one holding element (32), - positioning the battery module (30) in the receiving support (20) so as to place the plurality of battery cells in contact with the cooling circuit (27), and - positioning at least one removable spacer (40) between the side walls (23, 25) of the receiving support (20) and the side wall (34B) of the battery module (30).

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