Storage battery module and motor vehicle equipped with such a module

Abstract

The invention relates to a storage battery module comprising: • - a rear portion which is provided with a bottom wall and a side wall; • - a front portion which comprises a front wall and is provided with attachment portions which are intended to engage with the side wall 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 cells. According to the invention, the temperature measurement device comprises sliding mounting means (57) which are suitable for allowing the temperature measurement device to be mounted on a complementary portion (30) of the side wall of the rear portion by a sliding movement. The invention also relates to a motor vehicle which is equipped with such a module.

Description

STORAGE BATTERY MODULE AND MOTOR VEHICLE EQUIPPED WITH SUCH A MODULE MODULE TECHNICAL FIELD OF THE IN ENTION

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

[0002] The invention relates more particularly to an accumulator battery module.

[0003] The invention finally relates to a motor vehicle equipped with such a module. STATE OF THE ART

[0004] Electrically powered motor vehicles, including hybrid thermal and electric vehicles, are generally equipped with an electric motor supplied with current by a plurality of storage battery modules.

[0005] Conventionally, each accumulator battery module is formed of a housing which houses a plurality of accumulator cells.

[0006] Such an accumulator battery module is known, for example, from document WO2020256271.

[0007] In this document, the housing has a rear part topped by a cover so as to define a housing for the accumulator cells. The rear part has a U-shaped part, made of a single piece, with a bottom wall and two side walls. Two side cover plates complete the side walls of the rear part so as to obtain a closed structure.

[0008] The entire housing (with the cover) then forms a rigid structure to accommodate the battery cells.

[0009] The storage battery module described in this document also includes a temperature sensor for monitoring the temperature of the storage cells inside the module. This sensor is here attached to a support mounted so as to rotate relative to the side wall of the rear part of the module.

[0010] However, it was observed that the contact between the battery cells and the temperature sensor was not optimally made, leading to erroneous acquired temperature data. PRESENTATION OF THE INVENTION

[0011] In order to overcome the aforementioned drawbacks, the present invention proposes to improve the positioning of the temperature sensor in order to obtain reliable temperature data from the accumulator cells.

[0012] More particularly, the invention provides an accumulator battery module comprising: - a rear part equipped with a bottom wall and a side wall, - a front part comprising a front wall provided with fixing portions intended to cooperate with the side wall of the rear part so as to delimit, with the rear part, a housing for receiving a plurality of accumulator cells, and - a device for measuring the temperature of accumulator cells.

[0013] According to the invention, the temperature measuring device comprises sliding mounting means adapted to allow the mounting of said temperature measuring device on a complementary part of the side wall of the rear part by a sliding movement.

[0014] Thus, according to the present invention, mounting the temperature measuring device in the accumulator battery module via a sliding movement makes it possible to ensure effective contact between the temperature measuring device and the accumulator cells. Indeed, better contact is obtained between the temperature measuring device and the accumulator cells thanks to the plane-plane support implemented between these two elements.

[0015] Other advantageous and non-limiting characteristics of the accumulator battery module according to the invention, taken individually or in all technically possible combinations, are the following: - the sliding movement has a sliding axis orthogonal to the bottom wall of the rear part; - the complementary part of the side wall is formed by a side closing plate, positioned between the plurality of accumulator cells and a part of the side wall of the rear part; - wherein the temperature measuring device is fixed to a support element having the shape of a folded tab, the temperature measuring device being positioned at a free end of said support element; - the temperature measuring device is fixed to the support element by gluing; - the support element is formed from a polymer material; - the support element has, at an end opposite said free end, said sliding mounting means and in which complementary mounting means are provided formed on one face of the side closing plate; - the sliding mounting means are formed by grooves intended to cooperate with the complementary mounting means formed on said face of the side closing plate; - the temperature measuring device is blocked in contact with the accumulator cells by the front wall of the front part; - an insulating plate is provided between the front part and the temperature measuring device positioned in contact with the accumulator cells; - the temperature measuring device comprises a temperature sensor formed by a thermistor; and - the plurality of accumulator cells is fixed to the bottom wall of the rear part by gluing.

[0016] The invention also relates to a motor vehicle comprising: - a support for receiving a storage battery module, said support for receiving being provided with a cooling circuit, and - a storage battery module as previously introduced, the bottom wall of the rear part of said storage battery module being positioned in contact with said cooling circuit.

[0017] Thermal paste is provided between the cooling circuit and the bottom wall of the rear part of the storage battery module.

[0018] Of course, the various features, variants and embodiments of the invention may be combined with each other in various combinations to the extent that they are not incompatible or mutually exclusive. DETAILED DESCRIPTION OF THE INVENTION

[0019] The description which follows with reference to the appended drawings, given as non-limiting examples, will make it clear what the invention consists of and how it can be implemented.

[0020] On the attached drawings:

[0021] [Fig. 1] represents a schematic view of a motor vehicle equipped with an accumulator battery module according to the invention;

[0022] [Fig. 2] represents a schematic perspective view of the storage battery module of Figure 1;

[0023] [Fig. 3] is an exploded perspective view of a storage battery module housing included in the storage battery module of Fig. 2;

[0024] [Fig. 4] is a partial perspective view of a temperature sensor assembled in the storage battery module of Fig. 2;

[0025] [Fig. 5] is a partial, exploded perspective view of the temperature sensor in the storage battery module of Fig. 2; and

[0026] [Fig. 6] is a sectional view of the cooperation between sliding mounting means and complementary mounting means according to the invention.

[0027] In Figure 1, there is shown a motor vehicle 1 equipped with a storage battery module 20 according to the invention.

[0028] In this description, the terms "interior" and "exterior" will be used in reference to the module itself, to designate respectively the side of an element facing the center of the module and the side of an element facing the outside of this module.

[0029] This motor vehicle 1 is an electric or hybrid motor vehicle equipped with an electric motor. At least one storage battery module 20 (also called “module 20” hereinafter) is designed to supply electric current to the electric motor of the motor vehicle 1.

[0030] This accumulator battery module 20 is for example attached to a receiving support 10 present in the motor vehicle 1. This receiving support 10 is for example secured to the chassis of the motor vehicle 1.

[0031] Figure 2 shows a schematic perspective view of the storage battery module 20. This module 20 comprises a storage battery module housing 21 (also called “housing 21” hereinafter), a plurality of storage cells 40, at least one closing side plate 30 and a temperature measuring device 50 (shown in Figures 4 and 5).

[0032] As shown in Figures 2 and 3, the housing 21 generally has a parallelepiped shape. It comprises a rear part 22 and a front part 28.

[0033] In this description, the terms "front" and "rear" are used in relation to the positioning of the element on the receiving support (on which the element concerned is attached). The rear of this element designates the side facing the receiving support on which the element is attached while the front designates the side facing away from this receiving support.

[0034] As shown in Figure 3, the rear portion 22 comprises a rectangular bottom wall 22A bordered by a side wall 23 interrupted at the corners. The side wall 23 is here formed of four opposite parts two by two, namely two panels 23A, 23C facing each other and two panels 23B, 23D facing each other. The panels 23A, 23B, 23C, 23D rise forward from the bottom wall 22A.

[0035] Here, the panels 23A, 23C of the side wall 23 form the two large sides of the side wall 23. They form straight portions of this side wall 23, and have a uniform and predetermined height H1.

[0036] Here, 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.

[0037] More particularly, as shown in FIG. 3, the panels 23B, 23D of the side wall 23 are each connected to the bottom wall 22A by the portion 26 having a plurality of folds.

[0038] In this description, the term "fold" means a part folded back on itself either neatly to form an edge line, or by forming a wave with a reduced radius of curvature (less than one centimeter). Such a fold thus forms a double thickness.

[0039] By way of illustration, each portion 26 here has the shape of a bellows extending between the bottom wall 22A and the panel 23B, 23D concerned.

[0040] As shown in Figure 3, at least one of the panels 23B, 23D has a height less than the panels 23A, 23C forming the long sides of the side wall 23.

[0041] More particularly here, the panel 23B has a uniform and predetermined height H2, lower than the height H1 of the panels 23A, 23C. The panel 23D has a uniform and predetermined height H3, lower than the height H2 of the opposite panel 23B.

[0042] As will be described later, these differences in height of the panels 23B, 23D are particularly advantageous for the positioning of the closing side plates 30. In particular, the low height of the panel 23D is suitable for allowing the temperature data acquired by the temperature sensor 50 to be transmitted to a processing unit (not shown) allowing analysis.

[0043] Advantageously, the rear part 22 is made from a single piece. This makes it possible in particular to obtain a rear part of the housing which is rigid but flexible in places and which does not have any weak points, for example resulting from the assembly of several elements. In addition, this makes it easier to manufacture.

[0044] The rear portion 22 is for example formed from an alloy comprising aluminum (preferably more than 50% by mass). Alternatively, it may be formed solely from aluminum.

[0045] As shown in Figures 2 and 3, the front part 28 is provided to close, at the front, the rear part 22. This front part 28 comprises a front wall 28A provided with fixing portions 28B, 28C. The fixing portions 28B, 28C of the front part 28 extend towards the side wall 23. In other words, the fixing portions 28B, 28C extend, from the front wall 28A, towards the rear of the housing 21.

[0046] The fixing portions 28B, 28C are intended to cooperate with the panels 23B, 23C of the side wall 23 of the rear part 22 so as to delimit a receiving housing 25 for the plurality of accumulator cells 40. The fixing portions 28B, 28C allow the closing of the housing (so as to hold the cells 40 in the receiving housing 25 delimited by the front part 28 and the rear part 22).

[0047] Here, the fixing portions 28B, 28C are fixed by welding to the side wall 23 of the rear part 22. More particularly, weld beads are used, on the one hand, between the fixing portions 28C and the panel 23D, and, on the other hand, between the fixing portion 28B and the panel 23B. Weld beads are also used between the panels 23A, 23C and the edges of the front part 28 not having fixing portions 28B, 28C in order to reinforce the fixing of the front part 28 and the rear part 22. Alternatively, the fixing portions can be fixed to the side wall of the rear part by any other mechanical fixing means.

[0048] In practice, each fixing portion 28B, 28C is in the form of a tab projecting from the front wall 28. More particularly, each tab has a shape folded towards the side wall 23 of the rear part 22. In other words, each fixing portion 28B, 28C is in the form of a tab folded towards the rear of the housing 21.

[0049] As shown in Figure 3, opposite the panel 23D of the side wall 23 of the rear part 22, two separate fixing portions 28C are provided. Each of these fixing portions 28C comprises a base portion 29A and a folded portion 29B so as to form the tab of the fixing portion 28C described previously.

[0050] The base portion 29A extends from the front wall 28A in the extension thereof. The folded portion 29B extends from the base portion 29A substantially orthogonally to the base portion 29A. The folded portion 29B therefore extends towards the rear of the housing 21. The folded portion 29B is intended to be fixed to the panel 23D of the side wall 23 of the rear portion 22.

[0051] In contrast, as shown in FIG. 2, a single fixing portion 28B is provided. This fixing portion 28B also includes a base portion 29C and a folded portion 29D, so as to form the tab of the fixing portion 28B described previously.

[0052] The base portion 29C extends from the front wall 28A, in the extension thereof. The folded portion 29D extends from the base portion 29C, substantially orthogonally to the base portion 29C. The folded portion 29D therefore extends towards the rear of the housing 21. The folded portion 29D is intended to be fixed to the panel 23B of the side wall 23 of the rear portion 22.

[0053] Here, the fixing portion 28B has a length of the order of the length of the panel 23B. Alternatively, the length of the fixing portion is less than that of the associated panel.

[0054] The front part 28 is for example formed from a single piece, made of aluminum or aluminum alloy.

[0055] The plurality of accumulator cells 40 is positioned in the receiving housing 25 formed by the assembly of the rear part 22 and the front part 28. The accumulator cells 40 are for example positioned next to each other, between the panels 23A, 23C. They are for example sixteen in number here.

[0056] In practice, each 40 cell of accumulator battery is for example fixed by gluing, on the bottom wall 22A of the rear part 22 of the housing 21.

[0057] The cells 40 are here flexible-envelope cells, that is to say cells 40 whose envelopes can deform when they are inserted into the receiving housing 25 formed by the front part 28 and the rear part 22 and when they are charged and discharged. Advantageously, the rear part 22 of the accumulator battery module housing 21 makes it possible to contain the deformation of the cells thanks to the portions 26 having the folds. Indeed, the portions 26 make it possible to introduce a flexibility characteristic for the housing 21 of the module 20 while guaranteeing the overall rigidity of the housing 21.

[0058] More particularly, the flexible envelope cells 40 comprise a flexible outer envelope which contains inside an electrolyte of organic solution or of a solution based on carbonate and lithium salts.

[0059] For example, this is a lithium-ion electrolyte, wrapped in a casing consisting 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.

[0060] These flexible-envelope cells 40, well known to those skilled in the art, will not be described in more detail here.

[0061] In order to allow the module 20 to be closed (i.e. by obstructing the space available between the plurality of accumulator cells 40 and the panels 23B, 23D of the rear part 22 of the housing 21), the accumulator battery module 20 comprises two side closing plates 30.

[0062] In practice here, a side closing plate 30 is positioned at each of the panels 23B, 23D.

[0063] As shown in Figure 2, each closing side plate 30 comprises an insulating part 32 and a fixing part 35 to the receiving support 10 of the motor vehicle 1.

[0064] The fixing part 35 is here formed from a metallic material. It is for example formed from aluminum.

[0065] More particularly, two separate fixing parts 35 are provided. Here, they are in the form of metal columns pierced with a longitudinal conduit and designed to cooperate with complementary fixing means present on the receiving support 10.

[0066] In order that these fixing parts 35 can cooperate with the means of fixing of the receiving support 10, the fixing parts 35 are positioned opposite the open corners of the side wall 23 of the rear part 22. In this way, when the module 20 is attached to the receiving support 10, the cooperation between the fixing parts 35 of each side closing plate 30 attached in the rear part 22 of the module 20 and the corresponding fixing means of the receiving support 10 is not hindered by the bottom wall 22A of the rear part 22 of the module 20.

[0067] In order to allow the module 20 to be fixed to the receiving support 10, the bottom of the receiving support 10 comprises fixing means (not shown). These fixing means are designed to cooperate with the fixing parts 35 of each side closure plate 30 of the module 20. In other words, the fixing means of the receiving support 10 are here designed to cooperate with the longitudinal openings formed in the metal columns of the side closure plates 30.

[0068] These means for fixing the receiving support 10 are, for example, lugs projecting from the bottom of the receiving support 10 and each cooperating with the corresponding longitudinal opening of a metal column 35 formed at the corners of each side closing plate 30.

[0069] The insulating part 32 is here formed by overmolding a polymer onto the fixing part 35. In other words, the insulating part 32 is formed by overmolding a plastic material onto the fixing part 35. In practice, each metal column has a plurality of attachment points to which the polymer used to form the insulating part 32 attaches during overmolding. This material used for the insulating part makes it possible to ensure electrical insulation of the elements of the housing 21 of the accumulator battery module.

[0070] In order to ensure rigidity of the accumulator battery module 20, each side closure plate 30 is fixed inside the rear part 22 of the module 20. More particularly, each side closure plate 30 is positioned resting on the bottom wall 22A of the rear part 22, at the level of the portions 26 having the folds. Here, each side closure plate 30 is for example fixed by welding on the panels 23A, 23B, 23C, 23D.

[0071] Each side closing plate 30 is for example fixed by welding to the rear part 22 of the housing 21 of the accumulator battery module 20.

[0072] The structure of the closing side plate 30 is particularly advantageous. Indeed, thanks to its bi-material character, it combines a part having an electrical insulation function and a more rigid part, allowing the accumulator battery module to be fixed to the receiving support present in the motor vehicle. It thus makes it possible to close the module 20 while allowing it to be fixed to the receiving support 10.

[0073] As shown in Figures 4 and 5, the closing side plate 30 allows the mounting of the temperature measuring device 50.

[0074] This temperature measuring device 50 comprises a temperature sensor 52 mounted on a support element 55.

[0075] The support element 55 is here formed from a polymer material. In other words, the support element 55 is formed from a plastic material. This makes it possible to confer an electrical insulation property to this support element 55 (so as to allow the acquisition and transmission of the data acquired by the temperature sensor 52).

[0076] The support element 55 here has the shape of a tab folded into an L. The latter comprises a support portion 55A extending parallel to the bottom wall 22A of the rear portion 22 and to the front wall 28A of the front portion 28. It also comprises a mounting portion 55B extending substantially orthogonally to the support portion 55A.

[0077] Here, the support portion 55A has a lower rigidity than the mounting portion 55B.

[0078] To compare the rigidity between the two parts (support and mounting), a rigidity test can be implemented. During this test, the support part 55A is for example fixed to a test support at a first point and a mechanical stress is applied to this support part 55A at a second point spaced from the first. The same mechanical stress is applied to the mounting part 55B fixed on the same test support, with the same distance between the fixing point and the point of application of the stress. It is then considered that the mounting part 55B has a rigidity greater than that of the support part 55A if, after the application of the mentioned stress, a greater deformation is observed at the level of the support part 55A than at the level of the mounting part 55B.

[0079] The support part 55A is designed to allow the fixing of the sensor temperature 52. For example, it has a thickness of less than 1 millimeter (mm). Preferably, its thickness is of the order of 0.5 mm.

[0080] More particularly, as shown in Figure 4, the temperature sensor 52 is positioned at a free end 56A of the support element 55. Here, the temperature sensor 52 is positioned at the free end 56A of the support portion 55A.

[0081] In practice, the temperature sensor 52 is fixed on an inner face of the mounting part 55A of the support element 55 so that it can be placed in contact with the accumulator cells 40. This temperature sensor 52 is for example here fixed by gluing on the mounting part 55A of the support element 55.

[0082] The temperature sensor 52 comprises, for example, a thermistor making it possible to obtain temperature data from the accumulator cells 40.

[0083] In order to enable the temperature measuring device 50 to be mounted in the storage battery module 20 so as to acquire temperature data from the storage battery cells 40, the support element 55 is mounted in the module 20. The mounting portion 55B is designed to enable this mounting.

[0084] The support element 55 is here mounted on a complementary part of the side wall 23 of the rear part 22. This complementary part of the side wall 23 is here the side closing plate 30.

[0085] To implement this assembly, the mounting part 55B comprises means 57 for mounting the mounting part 55B of the support element 55 on the closing side plate 30.

[0086] As shown in Figures 4 and 5, the mounting means 57 are positioned at a free end 56B, opposite the free end 56A at which the temperature sensor 52 is located. More particularly, the mounting means 57 are arranged at the free end 56B of the mounting part 55B.

[0087] Advantageously, the mounting means 57 are here sliding mounting means designed to allow the temperature measuring device 50 to be mounted on the closing side plate 30 by a sliding movement. In other words, the temperature measuring device 50 is mounted in translation relative to the closing side plate 30 (and therefore by relative to the side wall 23 of the rear part 22). Here, the sliding (or translational) movement of the temperature measuring device 50 is carried out along an axis Z orthogonal to the bottom wall 22A of the rear part 22 (figures 2 and 3).

[0088] The mounting means 57 are here shaped as slide means so as to allow this sliding movement. More particularly, as shown in FIG. 6, the sliding mounting means 57 are formed by grooves intended to cooperate with complementary mounting means 58 formed on the front face 30A of the side closure plate 30.

[0089] The sliding mounting means 57 are therefore designed to cooperate with these complementary mounting means 58.

[0090] As shown in Figures 5 and 6, the complementary mounting means 58 are formed projecting from the front face 30A of the side closure plate 30. They comprise two longitudinal uprights 58, extending parallel to the front face 30A of the side closure plate 30. These two longitudinal uprights 58 are designed to cooperate with the grooves of the sliding mounting means 57 of the temperature measuring device 50 so as to allow the sliding movement of the temperature measuring device 50 in the accumulator battery module 20.

[0091] In practice, the height H3 of the panel 23D, lower than the heights of the other panels 23A, 23B, 23C of the side wall 23 of the rear part 22 of the housing 21, is particularly advantageous for the positioning of these complementary mounting means 58. Indeed, the space available between the free end of the panel 23D of the side wall 23 of the rear part 22, the free end of the front wall 28A of the front part 28 and the free ends of the fixing portions 28C makes it possible to accommodate these complementary mounting means 58.

[0092] Thus, the sliding mounting means 57 here allow the guiding of the translational movement of the temperature measuring device 50 in the module 20. Consequently, when the sliding mounting means 57 and the complementary mounting means 58 cooperate, only a translation of the temperature measuring device 50 along the Z axis is authorized (the other degrees of freedom therefore being blocked by this cooperation).

[0093] The temperature measuring device 50 is here blocked in contact with the accumulator cells 40 by the front wall 28A of the front part 28. More in particular, the temperature measuring device 50 is kept in contact with the accumulator cells 40 thanks to the front part 28, when the latter is assembled to the rear part 22.

[0094] Indeed, the fixing of the fixing portions 28B, 28C on the panels 23B, 23D of the side wall 23 of the rear part 22 makes it possible to block the sliding movement of the temperature measuring device 50 by keeping the latter in contact with the accumulator cells 40. In other words, the fixing portions of the front part 28 on the side wall 23 of the rear part 22 form blocking means so that the front wall 28A of the front part 28 blocks the temperature measuring device 50 in contact with the accumulator cells 40.

[0095] Advantageously, the installation of the temperature measuring device in the storage battery module by means of a sliding movement ensures effective contact between the temperature sensor and the storage cells. This sliding installation allows for a flat contact between the temperature sensor and the storage cells, which ensures better contact between these two elements.

[0096] The contact between the temperature sensor 52 and the accumulator cells 40 is improved thanks to the presence of an insulating plate 60 (figure 2). This insulating plate 60 is placed between the front part 28 and the temperature measuring device 50 positioned in contact with the accumulator cells 40.

[0097] This insulating plate 60 is for example formed from a polymer material. In other words, it is formed here from plastic.

[0098] Advantageously, the insulating plate 60 makes it possible to compensate for assembly clearances when fixing the front part 28 to the rear part 22 so as to guarantee effective contact between the temperature measuring device 50 and the accumulator cells 40.

[0099] As can be seen in Figures 4 and 5, a connection element 59, connected to the temperature sensor 52, is provided so as to allow the transmission of the acquired temperature data to a processing unit (not shown) located outside the accumulator battery module 20.

[0100] Finally, once all the elements are assembled, the rear part 22 of the housing 21 also forms the rear part of the accumulator battery module 20 and the front part 28 of the housing 21 also forms the front part of module 20.

[0101] In order to enable the electric motor of the motor vehicle 1 to be supplied with electric current, the accumulator battery module 20 is positioned in the receiving support 10.

[0102] The receiving support 10 comprises, at its bottom, a cooling circuit (not shown in the figures). The cooling effect is for example obtained from the circulation of water in the cooling circuit.

[0103] The cooling circuit is designed to cool, by conduction, the accumulator cells 40. For this, the bottom wall 22A of the rear part 22 of the housing 21 of the accumulator battery module 20 is positioned in contact with the bottom of the receiving support 10.

[0104] In order to improve the conduction phenomenon (and therefore the cooling), a thermal 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 module 20 of storage battery. In other words, this thermal paste is positioned between the cooling circuit and the bottom wall 22A of the rear part 22 of the housing 21 of the storage battery module 20 so as to improve the efficiency of the thermal conduction between the cooling circuit and the cells 40 (fixed on the bottom wall 22A of the rear part 22 of the housing 21 of the accumulator battery module 20).

[0105] This thermal paste prevents the formation of an air gap between the cooling circuit and the cells 40, which improves the conduction phenomenon and therefore cooling.

[0106] The receiving support 10 is for example formed here so as to be impervious to water drops or dust which could enter the accumulator battery module. The sealing is here evaluated according to the IP67 standard according to the EN60529 standard.

[0107] According to an alternative embodiment, the folded tabs forming the attachment portions of the front part on the panels of the side wall of the rear part may be different in number and shape as long as their cooperation with the panels of the side wall of the rear part is possible to close the housing (therefore the accumulator battery module) and maintain the accumulator cells in the delimited reception housing and the temperature measuring device 50 in contact with these cells 40.

[0108] According to another embodiment, the side wall of the rear part can be formed of four straight panels (without the portions having the plurality of folds). In this case, the side closing plates are fixed at the level of the two opposite straight panels corresponding to the short sides of the side wall of the rear part.

[0109] Generally, it should be noted that the dimensions of the front and rear parts of the battery module housing, as well as those of the receiving support, are adapted according to the number of battery cells housed in the module. In the example described above, the dimensions are adjusted so that the battery module contains 16 cells.

[0110] The embodiment described above only concerns a receiving support associated with a storage battery module.

[0111] The present invention is of course applicable in the case where a plurality of accumulator battery modules are included in the motor vehicle. In such a case, a plurality of accumulator battery modules may be considered juxtaposed next to each other in the motor vehicle, each module of the plurality being attached to a corresponding receiving support. A single receiving support may also be considered accommodating a plurality of accumulator battery modules (the accumulator battery modules being positioned, for example, next to each other on the bottom of the single receiving support).

[0112] Thanks to the sliding mounting means, the acquisition of temperature data from the accumulator cells 40 is easy to implement here.

[0113] In fact, the mounting of the temperature measuring device 50 in the module 20 is carried out by sliding the sliding mounting means 57 of the support element 55 on the complementary mounting means 58 formed on the front face 30A of the side closing plate 30.

[0114] Then, the front part 28 is assembled to the rear part 22 by fixing the fixing portions 28B, 28C on the side wall 23 of the rear part 22. This fixing then makes it possible to block the temperature measuring device 50 against the accumulator cells 40. The contact, made in plane-plane support between the temperature measuring device 50 and the accumulator cells 40 then makes it possible to acquire reliable temperature data from the cells 40.

Claims

CLAIMS

1. Module (20) of accumulator batteries comprising: - a rear part (22) provided with a bottom wall (22A) and a side wall (23), - a front part (28) comprising a front wall (28A) provided with fixing portions (28B, 28C) intended to cooperate with the side wall (23) of the rear part (22) so as to delimit, with the rear part (22), a housing (25) for receiving a plurality of accumulator cells (40), and - a device (50) for measuring the temperature of accumulator cells (40), characterized in that said temperature measuring device (50) comprises sliding mounting means (57) adapted to allow the mounting of said temperature measuring device (50) on a complementary part (30) of the side wall (23) of the rear part (22) by a sliding movement.

2. Battery module (20) according to claim 1, in which the sliding movement has a sliding axis (Z) orthogonal to the bottom wall (22A) of the rear part (22).

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

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

5. A battery module (20) according to claim 4, wherein the temperature measuring device (50) is fixed to the support element (55) by gluing.

6. A battery module (20) according to claim 4 or 5, wherein the support member (55) is formed from a polymer material.

7. Module (20) of accumulator batteries according to any one of claims 4 to 6 taken in the dependency of claim 3, in which the support element (55) has, at an end (56B) opposite said free end (56A), said sliding mounting means (57) and in which complementary mounting means (58) are provided formed on a face (30A) of the closing side plate (30).

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

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

10. Motor vehicle (1) comprising: - a receiving support (10) for a module (20) of accumulator batteries, said receiving support (10) being provided with a cooling circuit, and - a storage battery module (20) according to any one of claims 1 to 9, the bottom wall (22A) of the rear part (22) of said storage battery module (20) being positioned in contact with said cooling circuit.

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