Battery module and motor vehicle equipped with such module

Abstract

The invention relates to a battery module comprising:-a rear portion provided with a bottom wall and side walls; -a front portion comprising a front wall and provided with attachments intended to engage with the side walls of the rear portion so as to delimit together with the rear portion a housing for receiving a plurality of storage cells (40); and-a device (50) for measuring the temperature of the storage cell. According to the invention, the temperature measuring device comprises sliding mounting means (57) adapted to allow the temperature measuring device to be mounted by sliding movement on a complementary portion (30) of the side wall of the rear portion. The invention also relates to a motor vehicle equipped with such a module.

Description

Technical Field

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

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

[0003] Finally, the invention relates to a motor vehicle equipped with such a module. Background Art

[0004] Electric motor vehicles, including hybrid vehicles having both internal combustion and electric propulsion, are typically equipped with electric motors that are supplied with current from a plurality of battery modules.

[0005] Conventionally, each battery module is formed of a housing accommodating a plurality of storage cells.

[0006] Such a battery module is known, for example, from document WO 2020 / 256271.

[0007] In this document, the housing has a rear part on which a cover is provided to define a housing for accommodating the storage cells. The rear part has a U-shaped part produced as a single piece, the U-shaped part having a bottom wall and two side walls. Two side cover plates complete the side walls of the rear part, thereby obtaining a closed structure.

[0008] The entire housing (including the cover) then forms a rigid structure for accommodating the storage cells.

[0009] The battery module described in this document also includes a temperature sensor for monitoring the temperature of the storage cells inside the module. In this case, the sensor is attached to a support rotatably mounted relative to the side wall of the rear part of the module.

[0010] However, it has been found that the contact between the storage cells and the temperature sensors is not optimal, which results in erroneous temperature data being collected. Summary of the invention

[0011] In order to overcome the above disadvantages, the present invention proposes to improve the positioning of the temperature sensor so as to obtain reliable temperature data of the storage cell.

[0012] More specifically, according to the present invention, a battery module is provided, the battery module comprising:

[0013] - a rear part provided with a bottom wall and side walls;

[0014] a front part comprising a front wall provided with attachment portions intended to engage with the side walls of the rear part so as to delimit therewith a housing for housing a plurality of storage cells; and

[0015] -Equipment for measuring the temperature of storage cells.

[0016] According to the invention, the temperature measuring device comprises sliding mounting means adapted to allow said temperature measuring device to be mounted on complementary portions of the side walls of the rear part by means of a sliding movement.

[0017] Therefore, according to the invention, the installation of the temperature measuring device in the battery module via a sliding movement ensures effective contact between the temperature measuring device and the storage cell. In fact, by means of the face-to-face abutment implemented between these two elements, a better contact is obtained between the temperature measuring device and the storage cell.

[0018] The following are further advantageous and non-limiting features of the battery module according to the invention, which may be considered individually or in any technically possible combination:

[0019] - the sliding movement is carried out along a sliding axis orthogonal to the bottom wall of the rear part;

[0020] - the complementary portion of the side wall is formed by a closed side panel positioned between the plurality of storage cells and a portion of the side wall of the rear portion;

[0021] - wherein a temperature measuring device is attached to a support element presenting the shape of a folded tab, the temperature measuring device being positioned at a free end of said support element;

[0022] - the temperature measuring device is attached to the supporting element by gluing;

[0023] - the support element is formed from a polymer material;

[0024] - the support element has said sliding mounting means at the end opposite to said free end and wherein complementary mounting means formed on the face of the closing side panel are provided;

[0025] - the sliding mounting means are formed by grooves intended to engage with complementary mounting means formed on said face of the closing side panel;

[0026] - the temperature measuring device is blocked from contact with the storage cells by the front wall of the front part;

[0027] - an insulating plate is provided which is placed between the front part and the temperature measuring device which is positioned in contact with the storage cells;

[0028] - the temperature measuring device comprises a temperature sensor formed by a thermistor; and

[0029] - A plurality of storage cells are attached to the bottom wall of the rear part by gluing.

[0030] The invention also relates to a motor vehicle comprising:

[0031] a support for receiving the battery module, said receiving support being provided with a cooling circuit; and

[0032] - A battery module as described above, wherein a bottom wall of a rear portion of the battery module is positioned in contact with the cooling circuit.

[0033] A thermally conductive paste is arranged between the cooling circuit and the bottom wall of the rear part of the battery module.

[0034] Of course, the various features, variants and embodiments of the invention can be combined with one another in various combinations, as long as they are not mutually incompatible or mutually exclusive. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following description, made with reference to the accompanying drawings given by way of non-limiting examples, will clearly illustrate what the invention is and how it can be implemented.

[0036] In the attached picture:

[0037] [ Figure 1 ] shows a schematic diagram of a motor vehicle equipped with a battery module according to the present invention;

[0038] [ Figure 2 ] shows Figure 1 A schematic perspective view of a battery module;

[0039] [ Figure 3 ] is included in Figure 2 An exploded perspective view of a battery module housing in a battery module;

[0040] [ Figure 4 ] is assembled in Figure 2 A partial perspective view of a temperature sensor in a battery module;

[0041] [ Figure 5 ]yes Figure 2 A partially exploded perspective view of a temperature sensor in a battery module; and

[0042] [ Figure 6 ] is a cross-sectional view of the engagement between a sliding mounting device and a complementary mounting device according to the present invention.

[0043] Figure 1 A motor vehicle 1 is shown which is provided with a battery module 20 according to the invention. DETAILED DESCRIPTION

[0044] In this specification, the terms "inner" and "outer" will be used with respect to the module itself to refer to the side of an element facing the center of the module and the side of an element facing the outside of the module, respectively.

[0045] The motor vehicle 1 is a motor vehicle with electric or hybrid propulsion provided with an electric motor. At least one battery module 20 (hereinafter also referred to as “module 20 ”) is designed to supply electric current to the electric motor of the motor vehicle 1 .

[0046] The battery module 20 is mounted, for example, in a receiving support 10 present in the motor vehicle 1. The receiving support 10 is, for example, integral with the chassis of the motor vehicle 1.

[0047] Figure 2 1 shows a schematic perspective view of a battery module 20. The module 20 includes a battery module housing 21 (hereinafter also referred to as "housing 21"), a plurality of storage cells 40, at least one closed side plate 30, and a temperature measuring device 50 (at Figure 4 and Figure 5 ).

[0048] like Figure 2 and Figure 3 As shown, the housing 21 has a generally parallelepiped shape and comprises a rear portion 22 and a front portion 28 .

[0049] In this specification, the terms "front" and "rear" are used with respect to the positioning of an element on a receiving support on which the element is mounted. The rear of the element means the side facing the receiving support on which the element is mounted, while the front means the side facing away from the receiving support.

[0050] like Figure 3 As shown, the rear portion 22 comprises a rectangular bottom wall 22A, which is bounded by side walls 23 interrupted at the corners. In this case, the side walls 23 are composed of four opposite parts in pairs, namely two panels 23A, 23C facing each other and two panels 23B, 23D facing each other. The panels 23A, 23B, 23C, 23D protrude forwardly from the bottom wall 22A.

[0051] In this case, the panels 23A, 23C of the side wall 23 form the two long sides of the side wall 23. These panels form the straight portion of this side wall 23 and have a uniform and predetermined height H1.

[0052] In this case, at least one of the panels 23B, 23D of the side wall 23 is connected to the bottom wall 22A by a portion 26 having a plurality of folds.

[0053] More specifically, if Figure 3As shown, the panels 23B, 23D of the side wall 23 are each connected to the bottom wall 22A by a portion 26 having a plurality of folds.

[0054] In this specification, "folded portion" is understood to mean a portion that is either folded on itself in a clear manner to form an edge line or folded on itself by forming corrugations with a reduced radius of curvature (less than one centimeter). Such a folded portion thus forms a double thickness.

[0055] By way of illustration, each portion 26 in this case presents the shape of a bellows extending between the bottom wall 22A and the relative panel 23B, 23D.

[0056] like Figure 3 As shown, at least one of the panels 23B, 23D is lower than the panels 23A, 23C forming the long sides of the side wall 23.

[0057] More specifically, in this case, the panel 23B has a uniform and predetermined height H2 that is smaller than the height H1 of the panels 23A, 23C. The panel 23D has a uniform and predetermined height H3 that is smaller than the height H2 of the opposing panel 23B.

[0058] As will be described below, these height differences of panels 23B, 23D are particularly advantageous for positioning closing side panel 30. In particular, the low height of panel 23D is adapted to allow temperature data collected by temperature sensor 50 to be transmitted to a processing unit (not shown) for analysis.

[0059] Advantageously, the rear part 22 is made in one piece. This notably allows to obtain a rear part of the housing that is rigid but flexible in place and does not have weak points such as those resulting from the assembly of several elements. In addition, this facilitates the manufacture of the rear part.

[0060] The rear portion 22 is for example formed of an alloy containing aluminium, preferably greater than 50% by mass. As a variant, the rear portion may be formed only of aluminium.

[0061] like Figure 2 and Figure 3 As shown, the front part 28 is designed to close the rear part 22 at the front. The front part 28 includes a front wall 28A provided with attachment parts 28B, 28C. The attachment parts 28B, 28C of the front part 28 extend toward the side wall 23. In other words, the attachment parts 28B, 28C extend from the front wall 28A toward the rear of the housing 21.

[0062] The attachments 28B, 28C are intended to engage with the panels 23B, 23C of the side walls 23 of the rear portion 22 to define a housing 25 for accommodating a plurality of storage cells 40. The attachments 28B, 28C allow the housing to be closed (to retain the cells 40 in the accommodating housing 25 defined by the front portion 28 and the rear portion 22).

[0063] In this case, the attachments 28B, 28C are attached to the side walls 23 of the rear portion 22 by welding. More specifically, welding beads are used between the attachments 28C and the panel 23D on the one hand and between the attachments 28B and the panel 23B on the other hand. Welding beads are also used between the panels 23A, 23C and the edges of the front portion 28 that do not have any attachments 28B, 28C, in order to strengthen the attachment of the front portion 28 to the rear portion 22. As a variant, the attachments can be attached to the side walls of the rear portion by any other mechanical attachment means.

[0064] In practice, each attachment portion 28B, 28C is in the form of a tab protruding from the front wall 28. More specifically, each tab presents a shape folded toward the side wall 23 of the rear portion 22. In other words, each attachment portion 28B, 28C is in the form of a tab folded toward the rear of the housing 21.

[0065] like Figure 3 As shown, two separate attachment portions 28C are provided facing the panel 23D of the side wall 23 of the rear portion 22. Each of these attachment portions 28C comprises a base portion 29A and a folded portion 29B to form the tabs of the attachment portion 28C described above.

[0066] The base portion 29A extends from the front wall 28A in its extension. The folded portion 29B extends from the base portion 29A substantially orthogonally to the base portion 29A. Thus, the folded portion 29B extends toward the rear of the housing 21. The folded portion 29B is intended to be attached to the panel 23D of the side wall 23 of the rear portion 22.

[0067] A single attachment portion 28B is provided at the opposite end, such as Figure 2 The attachment portion 28B further includes a base portion 29C and a folded portion 29D to form the above-mentioned protruding piece of the attachment portion 28B.

[0068] The base portion 29C extends from the front wall 28A in its extension. The folded portion 29D extends from the base portion 29C substantially orthogonally to the base portion 29C. Thus, the folded portion 29D extends toward the rear of the housing 21. The folded portion 29D is intended to be attached to the panel 23B of the side wall 23 of the rear portion 22.

[0069] In this case, the length of the attachment portion 28B corresponds approximately to the length of the panel 23B. As a variant, the length of the attachment portion is less than the length of the associated panel.

[0070] The front portion 28 made of aluminum or an aluminum alloy is formed, for example, in one piece.

[0071] A plurality of storage cells 40 are positioned in the housing case 25 formed by assembling the rear portion 22 and the front portion 28. The storage cells 40 are positioned adjacent to each other, for example, between the panels 23A, 23C. In this case, there are sixteen, for example.

[0072] In practice, each battery cell 40 is attached to the bottom wall 22A of the rear portion 22 of the casing 21 , for example by gluing.

[0073] In this case, the cells 40 are cells with flexible encapsulation, i.e. cells 40 with an encapsulation that can be deformed when they are inserted into the housing 25 formed by the front part 28 and the rear part 22 and when they are loaded and unloaded. Advantageously, the rear part 22 of the battery module housing 21 allows the deformation of the cells to be accommodated by means of the part 26 with the fold. In fact, the part 26 allows the introduction of flexible features to the housing 21 of the module 20 while ensuring the overall rigidity of the housing 21.

[0074] More specifically, the flexible encapsulated cell 40 has a flexible outer encapsulation containing an organic solution electrolyte or a carbonate and lithium salt based solution.

[0075] For example, it is an electrolyte of lithium-ion type, enclosed in an envelope made of a plastic film surrounded by a laminated aluminum film. The plastic film is intended to isolate the electrolyte contained in the cell 35 from the aluminum film.

[0076] These flexible encapsulated cells 40 , which are well known to those skilled in the art, will not be described in further detail herein.

[0077] In order to allow the module 20 to be closed (ie by blocking the available space between the plurality of storage cells 40 and the panels 23B, 23D of the rear portion 22 of the casing 21 ), the battery module 20 comprises two closing side panels 30 .

[0078] In practice, in this case, a closing side panel 30 is positioned on each of the panels 23B, 23D.

[0079] like Figure 2 As shown, each closing side panel 30 comprises an insulating portion 32 and an attachment portion 35 for attachment to a receiving support 10 of the motor vehicle 1 .

[0080] In this case, the attachment portion 35 is formed of a metal material. For example, the attachment portion is formed of aluminum.

[0081] More specifically, there are provided two separate attachment portions 35 . In this case, these attachment portions are in the form of metal posts perforated by longitudinal holes and designed to engage with complementary fixing means present on the receiving support 10 .

[0082] In order to enable these attachment portions 35 to engage with the means for attaching the receiving support 10, the attachment portions 35 are positioned facing the open corners of the side walls 23 of the rear portion 22. In this way, when the module 20 is mounted on the receiving support 10, the engagement between the attachment portions 35 of each closed side panel 30 mounted in the rear portion 22 of the module 20 and the corresponding means for attaching the receiving support 10 is not hindered by the bottom wall 22A of the rear portion 22 of the module 20.

[0083] In order to allow the module 20 to be attached to the receiving support 10, the bottom of the receiving support 10 comprises attachment means (not shown). These attachment means are designed to engage with the attachment portion 35 of each closed side panel 30 of the module 20. In other words, in this case, the means for attaching the receiving support 10 are designed to engage with the longitudinal openings formed in the metal columns of the closed side panels 30.

[0084] These means for attaching the receiving support 10 are, for example, lugs protruding from the bottom of the receiving support 10 , each of which engages with a corresponding longitudinal opening of a metal post 35 formed at a corner of each closing side panel 30 .

[0085] In this case, the insulating portion 32 is formed by overmolding a polymer onto the attachment portion 35. In other words, the insulating portion 32 is formed by overmolding a plastic material onto the attachment portion 35. In practice, each metal post has a plurality of hook points on which the polymer used to form the insulating portion 32 is hooked during overmolding. Such a material used for the insulating portion provides electrical insulation for the elements of the battery module housing 21.

[0086] In order to provide rigidity to the battery module 20, each closed side panel 30 is attached to the inside of the rear portion 22 of the module 20. More specifically, each closed side panel 30 is positioned to abut against the bottom wall 22A of the rear portion 22 near the portion 26 having the folded portion. In this case, each closed side panel 30 is attached to the panels 23A, 23B, 23C, 23D, for example, by welding.

[0087] Each closing side plate 30 is attached to the rear portion 22 of the housing 21 of the battery module 20 , for example, by welding.

[0088] The structure of the closed side plate 30 is particularly advantageous. In fact, the closed side plate combines, by virtue of its bi-material nature, a part having an electrical insulating function and a more rigid part, allowing the battery module to be attached to a receiving support present in a motor vehicle. It thus allows the module 20 to be closed while allowing it to be attached to the receiving support 10.

[0089] like Figure 4 and Figure 5 As shown, the closed side panel 30 allows for the installation of a temperature measuring device 50 .

[0090] The temperature measuring device 50 comprises a temperature sensor 52 mounted on a support element 55 .

[0091] In this case, the support element 55 is formed of a polymer material. In other words, the support element 55 is formed of a plastic material. This allows electrical insulation properties to be imparted to the support element 55 (to allow the data collected by the temperature sensor 52 to be collected and transmitted).

[0092] In this case, the support element 55 is in the form of a tab folded into an L-shape; the tab comprises a support portion 55A extending parallel to the bottom wall 22A of the rear portion 22 and the front wall 28A of the front portion 28. The tab also comprises a mounting portion 55B extending substantially orthogonally to the support portion 55A.

[0093] In this case, the rigidity of the supporting portion 55A is smaller than the rigidity of the mounting portion 55B.

[0094] In order to compare the rigidity between the two parts (support part and mounting part), a rigidity test can be implemented. During this test, the support part 55A is attached to the test bracket, for example, at a first point, and a mechanical stress is applied to the support part 55A at a second point spaced apart from the first point. With the same gap between the attachment point and the stress application point, the same mechanical stress is applied to the mounting part 55B attached to the same test bracket. Then, if, after applying the above-mentioned stress, a greater deformation is observed near the support part 55A than near the mounting part 55B, it is considered that the mounting part 55B has a greater rigidity than the support part 55A.

[0095] The support portion 55A is designed to allow the temperature sensor 52 to be attached. For example, the thickness of the support portion is less than 1 millimeter (mm). Preferably, the thickness of the support portion is about 0.5 mm.

[0096] More specifically, if Figure 4 As shown, the temperature sensor 52 is positioned at the free end 56A of the support element 55. In this case, the temperature sensor 52 is positioned at the free end 56A of the support portion 55A.

[0097] In practice, the temperature sensor 52 is attached to the inner face of the mounting portion 55A of the support member 55 so as to be placed in contact with the storage cell 40. In this case, the temperature sensor 52 is attached to the mounting portion 55A of the support member 55 by gluing, for example.

[0098] The temperature sensor 52 includes, for example, a thermistor for collecting temperature data from the storage cell 40 .

[0099] In order to allow the temperature measuring device 50 to be mounted in the battery module 20 in order to collect temperature data from the storage cells 40, a support element 55 is mounted in the module 20. The mounting portion 55B is designed to allow this type of mounting.

[0100] In this case, the support element 55 is mounted on a complementary portion of the side wall 23 of the rear portion 22. In this case, the complementary portion of the side wall 23 is the closing side panel 30.

[0101] In order to implement this type of mounting, the mounting portion 55B comprises means 57 for mounting the mounting portion 55B of the support element 55 on the closing side panel 30 .

[0102] like Figure 4 and Figure 5 As shown, the mounting device 57 is positioned at the free end 56B opposite to the free end 56A where the temperature sensor 52 is located. More specifically, the mounting device 57 is provided at the free end 56B of the mounting portion 55B.

[0103] Advantageously, in this case, the mounting means 57 are sliding mounting means adapted to allow the temperature measuring device 50 to be mounted on the closed side panel 30 by a sliding movement. In other words, the temperature measuring device 50 is mounted in translation relative to the closed side panel 30 (and therefore relative to the side wall 23 of the rear part 22). In this case, the sliding (or translation) movement of the temperature measuring device 50 is along the Z axis (Z) orthogonal to the bottom wall 22A of the rear part 22. Figure 2 and Figure 3 )conduct.

[0104] In this case, the mounting device 57 is formed by a slide to allow such sliding movement. Figure 6 As shown, the sliding mounting means 57 are formed by grooves intended to engage with complementary mounting means 58 formed on the front face 30A of the closing side panel 30 .

[0105] The sliding mounting means 57 are therefore designed to engage with these complementary mounting means 58 .

[0106] like Figure 5 and Figure 6 As shown, complementary mounting means 58 are formed to protrude from the front face 30A of the closing side panel 30. These complementary mounting means include two longitudinal uprights 58 extending parallel to the front face 30A of the closing side panel 30. The two longitudinal uprights 58 are designed to engage with the grooves of the sliding mounting means 57 of the temperature measuring device 50 to allow the temperature measuring device 50 to slide and move in the battery module 20.

[0107] In practice, the height H3 of the panel 23D, which is lower than the height of the other panels 23A, 23B, 23C of the side walls 23 of the rear portion 22 of the housing 21, is particularly advantageous for positioning these complementary mounting means 58. In fact, the space available between the free ends of the panel 23D of the side walls 23 of the rear portion 22, the free ends of the front wall 28A of the front portion 28 and the free ends of the attachments 28C allows accommodating these complementary mounting means 58.

[0108] Thus, in this case, the sliding mounting means 57 allow guiding the translational movement of the temperature measuring device 50 in the module 20. Accordingly, when the sliding mounting means 57 and the complementary mounting means 58 are engaged, only translational movement of the temperature measuring device 50 along the Z axis is allowed (other degrees of freedom are therefore blocked by this engagement).

[0109] In this case, the temperature measuring device 50 is blocked from contacting the storage cells 40 by the front wall 28A of the front portion 28. More specifically, when the temperature measuring device 50 is assembled on the rear portion 22, the temperature measuring device is held in contact with the storage cells 40 by means of the front portion 28.

[0110] In fact, attaching the attachment portions 28B, 28C to the panels 23B, 23D of the side walls 23 of the rear portion 22 allows blocking the sliding movement of the temperature measuring device by keeping the temperature measuring device 50 in contact with the storage cells 40. In other words, the portion for attaching the front portion 28 to the side walls 23 of the rear portion 22 forms a blocking means, so that the front wall 28A of the front portion 28 blocks the temperature measuring device 50 in contact with the storage cells 40.

[0111] Advantageously, in this case, mounting the temperature measuring device in the battery module via a sliding movement ensures effective contact between the temperature sensor and the storage cell. This sliding mounting actually allows a flat support to be provided between the temperature sensor and the storage cell, which ensures better contact between these two elements.

[0112] The contact between the temperature sensor 52 and the storage cell 40 is due to the insulating plate 60 ( Figure 2The insulating plate 60 is placed between the front portion 28 and the temperature measuring device 50 positioned in contact with the storage cell 40 .

[0113] The insulating plate 60 is formed of, for example, a polymer material. In other words, in this case, the insulating plate is formed of a plastic material.

[0114] Advantageously, the insulating plate 60 compensates for any assembly play when attaching the front part 28 to the rear part 22 , so as to ensure effective contact between the temperature measurement device 50 and the storage cells 40 .

[0115] like Figure 4 and Figure 5 As shown, a connection element 59 connected to the temperature sensor 52 is provided to allow the collected temperature data to be transmitted to a processing unit (not shown) located outside the battery module 20 .

[0116] Finally, once all the elements are assembled, the rear portion 22 of the casing 21 also forms the rear portion of the battery module 20 , and the front portion 28 of the casing 21 also forms the front portion of the module 20 .

[0117] In order to allow the electric motor of the motor vehicle 1 to be supplied with electric current, the battery module 20 is positioned in the receiving support 10 .

[0118] The receiving support 10 comprises a cooling circuit (not shown in the figures) at its bottom. The cooling effect is obtained, for example, by the circulation of water in the cooling circuit.

[0119] The cooling circuit is designed to cool the storage cells 40 by conduction. To this end, the bottom wall 22A of the rear portion 22 of the housing 21 of the battery module 20 is positioned in contact with the bottom of the receiving support 10 .

[0120] In order to improve the conduction phenomenon (and therefore improve cooling), a thermally conductive paste (not shown) is positioned between the bottom of the receiving support 10 and the bottom wall 22A of the rear part 22 of the housing 21 of the battery module 20. In other words, the thermally conductive paste is positioned between the cooling circuit and the bottom wall 22A of the rear part 22 of the housing 21 of the battery module 20 to improve the efficiency of heat conduction between the cooling circuit and the battery cells 40 (attached to the bottom wall 22A of the rear part 22 of the housing 21 of the battery module 20).

[0121] This thermally conductive paste prevents the formation of air gaps between the cooling circuit and the battery cells 40 , thereby improving conduction phenomena and thus cooling.

[0122] In this case, the receiving support 10 is formed to be impermeable, for example, to any water drops or dust that may be introduced into the battery module. In this case, the impermeability is assessed according to the IP67 standard in accordance with the EN60529 standard.

[0123] According to an alternative embodiment, the folding tabs forming part of the panel for attaching the front part to the side wall of the rear part can be different in number and shape, as long as the engagement of these folding tabs with the panel of the side wall of the rear part can close the housing (and therefore the battery module) and maintain the storage cells in the defined containment housing and maintain the temperature measuring device 50 in contact with these cells 40.

[0124] According to another alternative embodiment, the side wall of the rear part can be formed by four straight panels (excluding the part with multiple folds).In this case, the closed side panel is attached to two opposite straight panels corresponding to the short side of the side wall of the rear part.

[0125] In general, it should be noted that the dimensions of the front and rear parts of the housing of the battery module and the dimensions of the receiving support are adapted according to the number of storage cells housed in the module. In the above example, the dimensions are adjusted so that the battery module contains 16 cells.

[0126] The above-described embodiments only relate to the receiving support associated with the battery module.

[0127] Of course, the invention is applicable to the case where a plurality of battery modules are included in the motor vehicle. In this case, it is conceivable to place a plurality of battery modules adjacent to each other in the motor vehicle, wherein each of the plurality of modules is mounted on a corresponding receiving support. It is also conceivable to place a single receiving support accommodating a plurality of battery modules (where the battery modules are positioned adjacent to each other, for example, on the bottom of the single receiving support).

[0128] With the aid of the sliding mounting device, it is easy to collect temperature data from the storage cells 40 .

[0129] In fact, the temperature measuring device 50 is mounted in the module 20 by sliding the sliding mounting means 57 of the support element 55 onto complementary mounting means 58 formed on the front face 30A of the closing side panel 30 .

[0130] The front part 28 is then assembled on the rear part 22 by attaching the attachment portions 28B, 28C to the side walls 23 of the rear part 22. This attachment then allows the temperature measuring device 50 to be blocked against the storage cells 40. The contact implemented by the face-to-face abutment between the temperature measuring device 50 and the storage cells 40 then allows reliable temperature data of the cells 40 to be collected.

Claims

1. A battery module (20), comprising: - a rear portion (22) provided with a bottom wall (22A) and side walls (23); - a front part (28) comprising a front wall (28A) provided with attachment portions (28B, 28C) intended to engage with the side walls (23) of the rear part (22) so as to define with the rear part (22) a housing (25) for housing a plurality of storage cells (40); and - a device (50) for measuring the temperature of the storage cells (40); Characterized in that the temperature measuring device (50) comprises sliding mounting means (57) adapted to allow the temperature measuring device (50) to be mounted on a complementary portion (30) of the side wall (23) of the rear portion (22) by means of a sliding movement.

2. The battery module (20) according to claim 1, wherein: The sliding movement is performed along a sliding axis (Z) orthogonal to the bottom wall (22A) of the rear portion (22).

3. The battery module (20) according to claim 1 or 2, wherein: The complementary portion (30) of the side wall (23) is formed by a closed side panel (30) positioned between the plurality of storage cells (40) and a portion (23B, 23D) of the side wall (23) of the rear portion (22).

4. The battery module (20) according to any one of claims 1 to 3, wherein: The temperature measuring device (50) is attached to a support element (55) in the shape of a folded tab, the temperature measuring device (50) being positioned at a free end (56A) of said support element (55).

5. The battery module (20) according to claim 4, wherein: The temperature measuring device (50) is attached to the supporting element (55) by gluing.

6. The battery module (20) according to claim 4 or 5, wherein: The support element (55) is formed from a polymer material.

7. A battery module (20) as claimed in any one of claims 4 to 6 when dependent on claim 3, wherein: The support element (55) has said sliding mounting means (57) at the end (56B) opposite to said free end (56A), and wherein complementary mounting means (58) are provided formed on the face (30A) of the closing side panel (30).

8. The battery module (20) according to claim 7, wherein: These sliding mounting means (57) are formed by grooves intended to engage with complementary mounting means (58) formed on said face (30A) of the closing side panel (30).

9. The battery module (20) according to any one of claims 1 to 8, wherein: The temperature measuring device (50) is blocked from contact with the storage cells (40) by the front wall (28A) of the front portion (28).

10. A motor vehicle (1) comprising: - a support (10) for receiving a battery module (20), said receiving support (10) being provided with a cooling circuit; and - The battery module (20) according to any one of claims 1 to 9, wherein a bottom wall (22A) of a rear portion (22) of the battery module (20) is positioned in contact with the cooling circuit.

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