WO2024127272A1 - Storage module, in particular for forming a vehicle battery pack, and assembly process for forming such a storage module - Google Patents

Storage module, in particular for forming a vehicle battery pack, and assembly process for forming such a storage module Download PDF

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Publication number
WO2024127272A1
WO2024127272A1 PCT/IB2023/062620 IB2023062620W WO2024127272A1 WO 2024127272 A1 WO2024127272 A1 WO 2024127272A1 IB 2023062620 W IB2023062620 W IB 2023062620W WO 2024127272 A1 WO2024127272 A1 WO 2024127272A1
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WO
WIPO (PCT)
Prior art keywords
storage module
plate
along
module according
edges
Prior art date
Application number
PCT/IB2023/062620
Other languages
French (fr)
Inventor
Davide GIUBELLINO
Daniel Hornback
Tae Hyun Kim
Original Assignee
C.R.F. Societa' Consortile Per Azioni
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by C.R.F. Societa' Consortile Per Azioni filed Critical C.R.F. Societa' Consortile Per Azioni
Publication of WO2024127272A1 publication Critical patent/WO2024127272A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane

Definitions

  • the invention relates to a storage module, which includes a plurality of battery cells and is preferably suitable to form a battery pack consisting of several modules, in particular for the automotive industry, for example for motor vehicles.
  • the batteries need to be cooled or, in general, the temperature of the batteries needs to remain within predetermined value ranges, so as to optimize the efficiency and functionality thereof in terms of storage and power transmission.
  • the cooling also tends to limit the dimensional variations of the battery cells, which are naturally subjected to a swelling during their charging and discharging operations.
  • said swelling mainly takes place along a direction that is orthogonal to said longitudinal axis.
  • the battery cells are arranged in suitable housing structures so as to form a storage module.
  • the object of the invention is to provide a storage module, which fulfils the need discussed above in a simple and economic manner.
  • a storage module in particular to form a vehicle battery pack, as defined in claim 1.
  • the invention further relates to an assembling process to form a storage module as defined in claims 11 and 12.
  • figure 1 shows, in perspective, a preferred embodiment of the storage module according to the invention
  • figure 2 is a perspecti ve view from the bottom of the storage module of figure 1
  • figure 3 is an exploded view of the storage module
  • figure 4 is a cross section according to the section plane identified by line IV- -IV in figure 1
  • figures 5 and 6 show two details, on a larger scale, of figure 4.
  • reference number 1 indicates a storage module, which, coupled to other similar modules, can form a battery pack, in particular for a vehicle (which is not shown herein).
  • the technical teaches disclosed hereinafter apply, generally speaking, not only to the automoti ve industry and to transports, but to any application that needs to store power, even though the description is explicitly referred to the automotive example.
  • the module 1 extends along a horizontal straight axis 6 and has a length dimension, along said axis 6, which is greater than the other two dimensions, namely height and width.
  • the module 1 is connected, together with the other storage modules of the battery pack, to an electric system (not shown) of the vehicle.
  • the modules 1 that are part of the same battery pack preferably are all the same, in terms of shape, dimensions and structure.
  • a control unit, not shown, is configured in a known manner that is not described in detail, so as to transfer power from the storage modules 1 to the electric system of the vehicle and vice versa, in order to monitor the state of charge and the efficiency of the modules 1, etc..
  • the module 1 comprises a plurality of battery cells
  • the cells 11 for example battery cells of the prismatic kind, which are arranged in positions next to one another along a direction 12, which is orthogonal to the axis 6.
  • the cells 11 are all the same in terms of shape and dimensions. Therefore, it is evident that the length dimension of the cells 11 substantially corresponds to the one of the entire module 1 , whereas the width dimension of each cell 11 is a fraction of the entire width dimension of the module 1.
  • the module 1 further comprises an outer box or casing 13, which defines a housing 14 where the battery cells 11 are arranged.
  • the casing 13 comprises three components, which are distinct from one another: a base wall 15; a perimeter wall 16, which extends upwards in the area of a peripheral edge of the wall 15, is continuous along said peripheral edge and consists of one single piece with a plurality of sides consecutive to one another, so as to define the contour of the housing 14; and a cover wall 19, which closes the housing 14 from the top.
  • the base wall 15 is a quadrilateral, so that the perimeter wall 16 consists of one single piece having four consecutive sides.
  • the perimeter wall 16 comprises two side plates 20, which are arranged on opposite sides relative to the axis 6 and are substantially parallel to the axis 6; the perimeter wall 16 further comprises a front portion 23a and a rear portion 23b, which are arranged along the axis 6 at the opposite ends of the casing 13 and are joined to the side plates 20 without gaps.
  • the portions 23a and/or 23b are provided with through openings for the passage of electric terminals of the battery cells 11, for the electric connection thereof.
  • the wall 19 and the wall 15 are distinct from the perimeter wall 16 and are coupled to the latter so as to hold the side plates 20 along the direction 12 in order to forbid or limit an outward deformation due to the effect of a possible swelling of the battery cells 11 inside the housing 14.
  • the wall 19 is coupled to tin upper edge 25 of the side plates 20 and the wall 15 is coupled to a lower edge 26 of the side plates 20:
  • the wall 19 comprises a main plate 27 and two end flaps 28, which project downwards from respective side edges of the plate 27 so as to be arranged on opposite sides of the perimeter wall 16 along the direction 12 (figure 4), in positions facing the edges 25, respectively.
  • the wall 15 comprises a plate 29 and two end flaps 30, which project upwards from respective side edges of the plate 29 so as to be arranged on opposite sides of the perimeter wall 16 along the direction 12 (figures 4), in positions facing the edges 26, respectively.
  • each one of the edges 25 and 26 is shaped so as to define a respective abutment 32,33 for holding or stopping along the direction 12 and a respective abutment 34,35 for holding or stopping in a vertical direction: the abutment 34 of the edges 25 faces downwards, whereas the abutment 35 of the edges 26 faces upwards.
  • the flaps 28 and 30 arc preferably shaped so as to have the shape of a hook, if considered in cross section according to a section plane orthogonal to the axis 6, so as to extend around the edges 25,26 and engage at least some of the abutments 32,33,34,35.
  • the aforesaid hook shape comprises: a first portion A, which extends crosswise to the corresponding plate 27,29, can preferably rest against the corresponding abutment 32,33 and defines a stop in order to hold the corresponding plates 20 along the direction 12 and avoid an outward deformation of the plate 20; and a second portion B, which extends crosswise to the first portion A and inwards, namely towards the corresponding plate 20, and can rest against the corresponding abutment 34,35 in order to vertically hold the corresponding edge 25,26 towards the corresponding plate 27,29.
  • each one of the edges 25,26 defines a respective projection, which laterally projects outwards and remains vertically interposed, in a sandwich-like manner, between the second portion B of the flaps 28,30 and the corresponding plate 27,29.
  • the retaining system defined by the flaps 28,30 allows the walls 15 and 19 to grab onto the side plates 20 in an effective manner, in order to limit the outward deformation of the side plates 20. besides defining a firm coupling to the perimeter wall 16.
  • the flaps 28,30 define respective seats 38,40, which extend parallel to the axis 6 and are engaged by the edges 25,26, respectively.
  • the flaps 28,30 are preferably shaped (for example, through bending relative to the plates 27,29) when the walls 15,19 are not coupled to the perimeter wall 16 yet.
  • the coupling is obtained afterwards, through relative sliding along the axis 6 between the flaps 28,30 and the corresponding edges 25,26, according to a guide-and-slide coupling. This option simplifies manufacturing operations and helps maintain these operations separate from the assembly.
  • the flaps 28,30 can be formed through plastic deformation, for example by means of bending, during the coupling of the walls 15,19 to the perimeter wall 16, so that they can directly grab onto the edges 25,26. This option is more complex to be actuated, but it would eliminate the clearances existing between the walls 15,19 and the side plates 20 when a sliding coupling has to be performed.
  • the casing 13 further preferably comprises a base 41, which is interposed between the plate 29 of the wall 15 and the edges 26 of the perimeter wall 16, defines the housing 14 at the bottom and has an upper surface on which the battery cells 11 rest.
  • the perimeter wall 16 is placed along the perimeter of the base 41 so as to define the housing 14 and the battery cells 11 are laid on the base 41 in said housing 14, in positions next to one another along the direction 12.
  • the battery cells 11 can be separated from one another, along the direction 12, by a pad layer 43 capable of elastically deforming itself along its thickness, namely along the direction 12, so as to absorb the expansions of the battery cells 11 due to the swelling thereof.
  • the perimeter wall 16 has no cooling ducts or channels; though, it can be provided with stiffening ribs 44.
  • the wall 19 lacks cooling ducts or channels, as well.
  • the plate 27 of the wall 19 is preferably provided with through openings 45 (figure 1), which allow' the housing 14 to be ventilated in order to limit the inner pressure thereof during the swelling of the battery cells 11.
  • the wall 15 has one or more inner channels 46 (figure 6) for the passage of a heat exchange fluid, so as to fulfil two functions at the same time: a structural function for the support of the perimeter wall 16 and of the battery cells 11 and a cooling function for cooling the batery cells 11 through the interposition of the plate 29 and of the possible base 41.
  • the channels 46 are preferably defined by a shaped plate 47 fixed to a lower face of the plate 29 and are provided with input/output mouths 48, which are not described in detail and have positions, a shape and dimensions that are such that they can be connected to the channels 46 of the adjacent storage modules making up the same battery pack.
  • the shaped plate 47 is welded to the lower face of the plate 29.
  • the storage module 1 is relatively simple to be manufactured and limits the deformations of the plates 20 along the direction 12.
  • the retaining system defined by the flaps 28,30 allows the perimeter wall 16 to be constrained outwards, on two sides that are opposite one another along the direction 12, namely just along the direction in which the swelling of the battery cells 11 mainly takes place.
  • the shape, the materials, the production technique and the assembly technique of the casing 13 as well as the arrangement of the channels 46 could be different from the ones indicated above by way of example.
  • the wall 19 could be absent or be replaced by a different covering system, for example one single closing cover could be provided and be shared by all the modules 1 making up the same battery pack.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

A storage module (1), in particular for forming a vehicle battery pack, has a casing (13), which extends along a vertical axis, along a longitudinal axis (6) and along a transverse direction (12), orthogonal to said axes, and defines a housing (14) capable 5 of containing a plurality of battery cells (11); the housing (13) has a base wall (15), and a perimeter wall (16), which extends along a perimeter of the base wall (15), so as to define a contour of the housing (14), and is provided with a front portion (23a), of a rear portion (23b), and of two side plates (20), opposite to each other along the transverse direction (12); the base wall (15) has a plate (29) and connecting means 10 (30) to couple the plate (29) to the perimeter wall (16); such connecting means (30) are coupled to lower edges (26) of the two side plates (20) and are configured to retain such lower edges (26) along the transverse direction (12) in order to prevent outward expansion of the side plates (20).

Description

STORAGE MODULE, IN PARTICULAR FOR FORMING A VEHICLE BATTERY PACK, AND ASSEMBLY PROCESS FOR FORMING SUCH A STORAGE MODULE
Cross-Reference to Related Applications
This Patent Application claims priority from Italian Patent Application No. 102022000025620 filed on December 14, 2022, the entire disclosure of which is incorporated herein by reference.
Technical Field of the Invention
The invention relates to a storage module, which includes a plurality of battery cells and is preferably suitable to form a battery pack consisting of several modules, in particular for the automotive industry, for example for motor vehicles.
State of the Art
As it is known, in the field of power supply through batteries, especially in the automotive industry', the batteries need to be cooled or, in general, the temperature of the batteries needs to remain within predetermined value ranges, so as to optimize the efficiency and functionality thereof in terms of storage and power transmission.
Furthermore, the cooling also tends to limit the dimensional variations of the battery cells, which are naturally subjected to a swelling during their charging and discharging operations. For instance, in case of prismatic battery cells with a shape that is oblong along a longitudinal axis, said swelling mainly takes place along a direction that is orthogonal to said longitudinal axis.
At the same time, the battery cells are arranged in suitable housing structures so as to form a storage module.
In order to try and overcome the aforesaid swelling problem and limit the deformations of the storage module, structural solutions are needed, which are aimed at containing or confining the battery cells in a well defined space, though without introducing excessive increases in the pressure between the battery cells themselves inside the housing structure.
The object of the invention is to provide a storage module, which fulfils the need discussed above in a simple and economic manner. According to the invention, there is provided a storage module, in particular to form a vehicle battery pack, as defined in claim 1.
The invention further relates to an assembling process to form a storage module as defined in claims 11 and 12.
Brief Description of the Drawings
The invention will now be described with reference to the accompanying drawings, which show a non-limiting embodiment thereof, wherein: figure 1 shows, in perspective, a preferred embodiment of the storage module according to the invention; figure 2 is a perspecti ve view from the bottom of the storage module of figure 1 ; figure 3 is an exploded view of the storage module; figure 4 is a cross section according to the section plane identified by line IV- -IV in figure 1 ; and figures 5 and 6 show two details, on a larger scale, of figure 4.
Description of a Preferred Embodiment of the Invention
In figure 1 , reference number 1 indicates a storage module, which, coupled to other similar modules, can form a battery pack, in particular for a vehicle (which is not shown herein). The technical teaches disclosed hereinafter apply, generally speaking, not only to the automoti ve industry and to transports, but to any application that needs to store power, even though the description is explicitly referred to the automotive example.
The module 1 extends along a horizontal straight axis 6 and has a length dimension, along said axis 6, which is greater than the other two dimensions, namely height and width.
In use, the module 1 is connected, together with the other storage modules of the battery pack, to an electric system (not shown) of the vehicle. The modules 1 that are part of the same battery pack preferably are all the same, in terms of shape, dimensions and structure. A control unit, not shown, is configured in a known manner that is not described in detail, so as to transfer power from the storage modules 1 to the electric system of the vehicle and vice versa, in order to monitor the state of charge and the efficiency of the modules 1, etc..
With reference to figure 3, the module 1 comprises a plurality of battery cells
11, for example battery cells of the prismatic kind, which are arranged in positions next to one another along a direction 12, which is orthogonal to the axis 6. In particular, the cells 11 are all the same in terms of shape and dimensions. Therefore, it is evident that the length dimension of the cells 11 substantially corresponds to the one of the entire module 1 , whereas the width dimension of each cell 11 is a fraction of the entire width dimension of the module 1.
The module 1 further comprises an outer box or casing 13, which defines a housing 14 where the battery cells 11 are arranged. According to an aspect of the invention, the casing 13 comprises three components, which are distinct from one another: a base wall 15; a perimeter wall 16, which extends upwards in the area of a peripheral edge of the wall 15, is continuous along said peripheral edge and consists of one single piece with a plurality of sides consecutive to one another, so as to define the contour of the housing 14; and a cover wall 19, which closes the housing 14 from the top.
In particular, the base wall 15 is a quadrilateral, so that the perimeter wall 16 consists of one single piece having four consecutive sides. In detail, the perimeter wall 16 comprises two side plates 20, which are arranged on opposite sides relative to the axis 6 and are substantially parallel to the axis 6; the perimeter wall 16 further comprises a front portion 23a and a rear portion 23b, which are arranged along the axis 6 at the opposite ends of the casing 13 and are joined to the side plates 20 without gaps.
For example, the portions 23a and/or 23b are provided with through openings for the passage of electric terminals of the battery cells 11, for the electric connection thereof.
As mentioned above, the wall 19 and the wall 15 are distinct from the perimeter wall 16 and are coupled to the latter so as to hold the side plates 20 along the direction 12 in order to forbid or limit an outward deformation due to the effect of a possible swelling of the battery cells 11 inside the housing 14. In particular, the wall 19 is coupled to tin upper edge 25 of the side plates 20 and the wall 15 is coupled to a lower edge 26 of the side plates 20: the wall 19 comprises a main plate 27 and two end flaps 28, which project downwards from respective side edges of the plate 27 so as to be arranged on opposite sides of the perimeter wall 16 along the direction 12 (figure 4), in positions facing the edges 25, respectively. Similarly, the wall 15 comprises a plate 29 and two end flaps 30, which project upwards from respective side edges of the plate 29 so as to be arranged on opposite sides of the perimeter wall 16 along the direction 12 (figures 4), in positions facing the edges 26, respectively.
With reference to figures 5 and 6, according to a preferred aspect of the invention, each one of the edges 25 and 26 is shaped so as to define a respective abutment 32,33 for holding or stopping along the direction 12 and a respective abutment 34,35 for holding or stopping in a vertical direction: the abutment 34 of the edges 25 faces downwards, whereas the abutment 35 of the edges 26 faces upwards. At the same time, the flaps 28 and 30 arc preferably shaped so as to have the shape of a hook, if considered in cross section according to a section plane orthogonal to the axis 6, so as to extend around the edges 25,26 and engage at least some of the abutments 32,33,34,35.
In particular, the aforesaid hook shape comprises: a first portion A, which extends crosswise to the corresponding plate 27,29, can preferably rest against the corresponding abutment 32,33 and defines a stop in order to hold the corresponding plates 20 along the direction 12 and avoid an outward deformation of the plate 20; and a second portion B, which extends crosswise to the first portion A and inwards, namely towards the corresponding plate 20, and can rest against the corresponding abutment 34,35 in order to vertically hold the corresponding edge 25,26 towards the corresponding plate 27,29.
In particular, each one of the edges 25,26 defines a respective projection, which laterally projects outwards and remains vertically interposed, in a sandwich-like manner, between the second portion B of the flaps 28,30 and the corresponding plate 27,29.
It is evident that the retaining system defined by the flaps 28,30 allows the walls 15 and 19 to grab onto the side plates 20 in an effective manner, in order to limit the outward deformation of the side plates 20. besides defining a firm coupling to the perimeter wall 16.
It is further evident, from the accompanying images, that the flaps 28,30 define respective seats 38,40, which extend parallel to the axis 6 and are engaged by the edges 25,26, respectively. The flaps 28,30 are preferably shaped (for example, through bending relative to the plates 27,29) when the walls 15,19 are not coupled to the perimeter wall 16 yet. The coupling is obtained afterwards, through relative sliding along the axis 6 between the flaps 28,30 and the corresponding edges 25,26, according to a guide-and-slide coupling. This option simplifies manufacturing operations and helps maintain these operations separate from the assembly.
Alternatively, the flaps 28,30 can be formed through plastic deformation, for example by means of bending, during the coupling of the walls 15,19 to the perimeter wall 16, so that they can directly grab onto the edges 25,26. This option is more complex to be actuated, but it would eliminate the clearances existing between the walls 15,19 and the side plates 20 when a sliding coupling has to be performed.
With reference to figure 6, again, the casing 13 further preferably comprises a base 41, which is interposed between the plate 29 of the wall 15 and the edges 26 of the perimeter wall 16, defines the housing 14 at the bottom and has an upper surface on which the battery cells 11 rest. During the assembly, the perimeter wall 16 is placed along the perimeter of the base 41 so as to define the housing 14 and the battery cells 11 are laid on the base 41 in said housing 14, in positions next to one another along the direction 12. In particular, the battery cells 11 can be separated from one another, along the direction 12, by a pad layer 43 capable of elastically deforming itself along its thickness, namely along the direction 12, so as to absorb the expansions of the battery cells 11 due to the swelling thereof. Once this positioning has ended, the walls 15 and 19 are coupled, through sliding, along the edges 25,26, as described above.
With reference to figures 1 and 2, in the specific example shown therein, the perimeter wall 16 has no cooling ducts or channels; though, it can be provided with stiffening ribs 44. Furthermore, in particular, the wall 19 lacks cooling ducts or channels, as well. The plate 27 of the wall 19 is preferably provided with through openings 45 (figure 1), which allow' the housing 14 to be ventilated in order to limit the inner pressure thereof during the swelling of the battery cells 11.
As far as the wall 15 is concerned, on the other hand, it has one or more inner channels 46 (figure 6) for the passage of a heat exchange fluid, so as to fulfil two functions at the same time: a structural function for the support of the perimeter wall 16 and of the battery cells 11 and a cooling function for cooling the batery cells 11 through the interposition of the plate 29 and of the possible base 41. The channels 46 are preferably defined by a shaped plate 47 fixed to a lower face of the plate 29 and are provided with input/output mouths 48, which are not described in detail and have positions, a shape and dimensions that are such that they can be connected to the channels 46 of the adjacent storage modules making up the same battery pack. For example, the shaped plate 47 is welded to the lower face of the plate 29.
Owing to the above, it is evident that the storage module 1 is relatively simple to be manufactured and limits the deformations of the plates 20 along the direction 12.
Indeed, the retaining system defined by the flaps 28,30 allows the perimeter wall 16 to be constrained outwards, on two sides that are opposite one another along the direction 12, namely just along the direction in which the swelling of the battery cells 11 mainly takes place.
Furthermore, it is evident that the flaps 28,30 and the coupling to the edges 25,26 are relatively simple to be obtained, so that the storage module 1 can be built and assembled in an easy manner.
Finally, owing to the above, it is evident that the casing 13, the module 1 and the relative assembly process described above with reference to the accompanying drawings can be subjected to changes and variations, which do not go beyond the scope of protection of the invention, as set forth in the appended claims.
In particular, the shape, the materials, the production technique and the assembly technique of the casing 13 as well as the arrangement of the channels 46 could be different from the ones indicated above by way of example.
Furthermore, the wall 19 could be absent or be replaced by a different covering system, for example one single closing cover could be provided and be shared by all the modules 1 making up the same battery pack.

Claims

1. Storage module, in particular for forming a vehicle battery pack, the storage module (1) comprising a casing (13) extending along a vertical axis, along a longitudinal axis (6) and along a transverse direction (12) which is orthogonal to said vertical and longitudinal axes and defines a housing (14) suitable to contain a plurality of battery cells (11); the casing (13) comprising:
- a base wall (15), and
- a perimeter wall (16) extending along a perimeter of said base wall (15), so as to define a contour of said housing (14), and comprising o a front portion (23a) and a rear portion (23b), opposed to each other along said longitudinal axis (6), and o two side plates (20), opposed to each other along said transverse direction (12); said base wall (15) comprising a first plate (29) and first connection means (30) for coupling said first plate (29) to said perimeter wall (16); characterised in that said first connection means (30) are coupled to bottom edges (26) of said side plates (20) and are configured to retain said bottom edges (26) along said transverse direction (12) and prevent an outward deformation of said side plates (20).
2. The storage module according to claim 1, wherein said first connection means (30) are configured to retain said lower edges (26) vertically towards said first plate (29).
3. The storage module according to claim 1 or 2, wherein said first connection means (30) are defined by a first and a second end flap, which project upwardly at respective side edges of said first plate (29) and extend respectively around said lower edges (26).
4. The storage module according to claim 3, wherein each of said first and second end flap (30) comprises a first portion (A) projecting upwardly and transversely from said first plate (29), and a second portion (B) projecting transversely from an upper end of said first portion (A) towards the corresponding side plate (20).
5. The storage module according to any one of the preceding claims, wherein said casing (13) further comprises a cover wall (19) arranged as an upper closure of said housing (14) and comprising a second plate (27) and second connection means (28) for coupling said second plate (27) to said perimeter wall (16); and wherein said second connecting means (28) are coupled to upper edges (25) of said side plates (20) and are configured to retain said upper edges (25) along said transverse direction (12) and prevent outward deformation of said side plates (20).
6. The storage module according to claim 5, wherein said second connection means (28) are configured to retain said upper edges (25) vertically towards said second plate (27).
7. The storage module according to claim 5 or 6, wherein said second connection means (28) are defined by a third and a fourth end flap (28), which project downwardly at respective side edges of said second plate (27) and extend respectively around said upper edges (25).
8. The accumulation module according to claim 7, wherein each of said third and fourth end flaps (28) comprises a first portion (A) projecting downwardly and transversely from said second plate (27), and a second portion (B) projecting transversely from a lower end of said first portion (A) towards the corresponding side plate (20).
9. The storage module according to any one of claims 5 to 8, wherein said second plate (27) has a plurality of through apertures (45).
10. The accumulation module according to any one of the preceding claims, wherein said connecting means define respective seats (38,40) extending parallel to said longitudinal axis (6) and engaged respectively by said edges (25,26).
11. An assembly method for forming a storage module according to any one of the preceding claims, the method comprising the step of coupling said base wall (15) to said perimeter wall (16) via a sliding along said longitudinal axis (6), engaging said bottom edges (26) to said first connecting means (30) via a guide and slide coupling.
12. An assembly method for forming a storage module according to any one of claims 5 to 9, the method comprising the step of coupling said cover wall (19) to said perimeter wall (16) via a sliding along said longitudinal axis (6), engaging said upper edges (25) to said second connecting means (28) via a guide and slide coupling.
PCT/IB2023/062620 2022-12-14 2023-12-13 Storage module, in particular for forming a vehicle battery pack, and assembly process for forming such a storage module WO2024127272A1 (en)

Applications Claiming Priority (2)

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IT202200025620 2022-12-14
IT102022000025620 2022-12-14

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