Tray for supporting battery cells usable in a battery forming system

Abstract

A tray (1) for supporting individual cells (2) of a battery, which can be used in a system for molding a battery, includes a support structure (3) comprising two main walls (4A, 4B) securely connected to each other by two end walls (5). One or more partitions (6) divide the space of the tray into multiple sections (7) arranged side by side, which are configured to receive corresponding cell arrays (200). Multiple partitions (8) arranged inside each section (7) define multiple seats (9) for individual cells in each section (7). A system (10) for adjusting the dimensions of the seats (9) for individual cells orthogonal to the individual cells includes an actuator system (11) for moving partitions (8) of a first series (8A) relative to partitions (8) of a second series (8B), the partitions of the second series being staggered with those of the first series. During the relative movement, the distance between partitions (8) of the same series (8A, 8B) remains constant.

Description

Technical Field

[0001] This invention relates to a tray for supporting individual battery cells, which can be used in a battery molding system.

[0002] The support tray includes:

[0003] - A support structure comprising two main walls that are parallel to and spaced apart from each other, the two main walls being securely connected by two end walls extending orthogonally to the two main walls, and further comprising one or more partitions parallel to the end walls, the one or more partitions connecting the two main walls, and the one or more partitions dividing the space defined by the main walls and the end walls into multiple segments arranged side by side, these segments being configured to receive corresponding cell arrays, each array comprising multiple battery cells oriented parallel to the main walls;

[0004] - Multiple partitions, arranged inside each of the sections parallel to the main wall, thereby defining multiple seats in each section, the multiple seats being configured to receive corresponding battery cells, and

[0005] - A system for adjusting the dimensions of the mounting portion for a battery cell along a direction orthogonal to the main wall. Background Technology

[0006] The above-mentioned type of tray is known, for example, from document CN114843634A.

[0007] In the production of battery cells used in storage batteries (especially those for pure electric or hybrid vehicles), the cells undergo a "forming" process, which means "training" the cells by repeatedly subjecting them to load-unload cycles. The forming process takes place in a forming chamber maintained at a controlled temperature, generally between 20°C and 60°C. The forming process involves electrically contacting the two terminals of each battery cell with the power unit, subjecting the cell to a series of repeated load-unload cycles. This forming process not only tests the manufactured cells but also helps to provide them with the necessary performance and appropriate service life.

[0008] After being arranged on one or more support trays, the battery cells are placed into a molding chamber, where the support trays are received, and the terminal contacts of each cell are connected to the corresponding terminals of the power unit.

[0009] The support tray includes a support structure having a defined seat adapted to receive the monomer to be molded.

[0010] Repeated loading and unloading cycles trigger chemical reactions within the battery cells, leading to the formation of combustible gas (i.e., hydrogen).

[0011] For this reason, known molding chambers are equipped with a suction system for gases generated during the molding process. Such a system generally requires a suction port for each cell to be molded, which is adapted to communicate with a degassing opening located in the cell housing; this makes the overall layout of the molding chamber very complex.

[0012] Furthermore, during the load-unload cycle, the gases produced by the chemical reactions triggered within the monomer may cause the monomer walls to expand (also known as “bulging”), which may cause the monomer itself to deform and generate excessive stress on the support structure of the tray.

[0013] To address the problems caused by the production of this gas, some known solutions envision methods that preload the battery cells.

[0014] CN114843634A, as described above, describes a support tray for forming battery cells. The tray includes a support structure and a system for adjusting the dimensions of the cell's seat. This system includes a scissor-carrying mechanism comprising a series of elements arranged in an X-shape, hinged to each other and movable between a maximum elongation configuration and a minimum elongation configuration. Dividers of the tray are connected to corresponding X-shaped elements of the scissor-carrying mechanism such that the maximum elongation configuration of the scissor-carrying mechanism corresponds to the maximum dimension of the seat, adapted to receive the battery cell and defined between the dividers, while the minimum elongation configuration of the scissor-carrying mechanism corresponds to the minimum dimension of the seat receiving the battery cell. Once the cell is arranged in the tray, a peak load is applied, preloading the cell and thereby pressing it against the main wall of the tray.

[0015] The limitations of the known solutions described above, as well as the more general solutions proposed in the known art to date, are that it is impossible to subject each individual unit in each segment of the pallet to the same preload.

[0016] Purpose of the invention

[0017] Therefore, the object of the present invention is to provide a support tray of the above type that does not exhibit the aforementioned disadvantages.

[0018] Specifically, the present invention aims to provide a tray for supporting a single battery cell, the tray having a rigid structure sufficient to withstand the stress generated by the bulging of the battery during the molding process.

[0019] Another object of the present invention is to provide a tray for supporting battery cells, the structure of which allows for easy and flexible adjustment of the cells to give them different shapes and sizes.

[0020] Finally, another object of the present invention is to provide a support tray of the above type that is economical and easy to manufacture. Summary of the Invention

[0021] To achieve one or more of the above objectives, the present invention aims to provide a support tray of the type mentioned at the beginning of this specification, characterized in that the dividers of each section of the tray include a first series of dividers arranged alternately with a second series of dividers, and the adjustment system includes an actuator system for moving the first series of dividers relative to the second series of dividers in a direction orthogonal to the main wall, while maintaining each series of dividers at a fixed distance from each other.

[0022] With the aid of the aforementioned feature, once the battery cell has been received in the seat defined between the dividers of each section of the tray, the actuator system can be actuated to apply a predetermined load to the cell in a direction orthogonal to the main wall of the tray, thereby ensuring that each cell is subjected to substantially the same load.

[0023] In a preferred embodiment, the actuator system includes a first actuator and a second actuator. The first actuator is used to move a first series of dividers along a direction orthogonal to the main wall of the tray while maintaining the first series of dividers at a fixed distance from each other. The second actuator is used to move a second series of dividers along a direction orthogonal to the main wall while maintaining the second series of dividers at a fixed distance from each other.

[0024] In one example, each of the first and second actuators includes a pair of threaded rods rotatably supported at their ends by the two main walls of the tray about an axis orthogonal to the main walls, and engaged in threaded sleeves carried by a respective series of separators.

[0025] This causes the rotation of the threaded rod to move the corresponding series of separators along a direction orthogonal to the main wall, without changing the distance between the separators.

[0026] Each series of separators has a through hole through which the threaded rod of another series of actuators freely passes.

[0027] Preferably, the threaded rod has an end that protrudes outward from the corresponding main wall of the tray, and the threaded rod can be engaged by a manual or automatic screwdriver.

[0028] According to another advantageous feature of the preferred embodiment, the tray includes a plurality of adjusting cams mounted on a cam carrier shaft, the cam carrier shaft being rotatably supported at its ends by a main wall, and the cam carrier shaft being configured to define a plane for supporting individual battery cells, the position of the plane along the vertical direction of the tray depending on the angular position of the cam carrier shaft.

[0029] Furthermore, the tray is preferably associated with a degassing hood, which is configured to be mounted on a support structure of the tray and includes a gas manifold, a plurality of suction nozzles configured to be positioned at corresponding degassing holes provided on the battery cell to be formed, and at least one discharge port that provides fluid communication between the degassing hood and a suction conduit of the forming chamber. Attached Figure Description

[0030] Other features and advantages of the invention will become clear from the following description with reference to the accompanying drawings, which are provided by way of non-limiting example only, in which:

[0031] - Figure 1 This is a perspective view of the support tray according to the present invention;

[0032] - Figure 2 yes Figure 1 A front view of the support tray.

[0033] - Figure 3 It is along Figure 2 Sectional view of line III-III in the middle.

[0034] - Figure 4 It is along Figure 2 Sectional view of line IV-IV in the middle.

[0035] - Figure 5 yes Figure 1 Top view of the support tray.

[0036] - Figure 6 It is along Figure 5 The sectional view of line VI-VI in the middle.

[0037] - Figure 7 It is along Figure 5 The sectional view of line VII-VII in the middle.

[0038] - Figure 8 This is a top view of the support tray according to the invention, with multiple battery cells filled in.

[0039] - Figure 9 This is a perspective view of a degassing hood that can be associated with a tray according to the invention. Detailed Implementation

[0040] Referring to the accompanying drawings, reference numeral 1 generally indicates a molded support tray for the individual cells 2 of the battery.

[0041] The phrase "cell molding" as used in this article refers to a step in the manufacturing process of batteries, such as those used in the automotive industry, involving a series of repetitive loading and unloading cycles on the cells before they are assembled to form a battery. The cell molding step is essential in battery production because it allows for testing of each cell and improves its lifespan and performance.

[0042] Overall, the cell molding process is performed inside a molding chamber, which is equipped with at least one power unit and multiple electrical terminals. Within the molding chamber, the terminals of the battery cell contact the electrical terminals of the power unit to enable the loading and unloading cycles.

[0043] The battery cell to be tested is placed in a seat located within a support tray, which is configured to support the cell within the molding chamber during the molding step.

[0044] The support tray 1 according to the invention includes a support structure 3, which includes a first main wall 4A and a second main wall 4B that are parallel to each other and spaced apart, the first main wall and the second main wall extending along a first direction A of the support tray 1 (see...). Figure 1 ).

[0045] In addition, the support structure 3 includes two end walls 5, which are firmly connected to the two main walls 4A and 4B.

[0046] More specifically, the end wall 5 extends along a second direction B orthogonal to the first direction A from the first end 5A attached to the first main wall 4A to the second end 5B attached to the second main wall 4B.

[0047] In addition, the support structure 3 includes one or more partitions 6 extending parallel to the end wall 5 along the second direction B. Figure 5 The one or more partitions will divide the space between the two main walls 4A, 4B and the space defined by the two end walls 5 into multiple sections 7 side by side.

[0048] The partition 6 securely connects the two main walls 4A and 4B, and extends from the first end 6A attached to the first main wall 4A to the second end 6B attached to the second main wall 4B.

[0049] The secure connection between the end wall 5 and the partition 6 and the two main walls 4A, 4B can be achieved by any known technique, such as by threaded connection or by welding.

[0050] Each segment 7 is configured to receive battery cell 2 ( Figure 8 The array 200 of the battery cells 2 includes a plurality of cells 2 arranged parallel to the main walls 4A, 4B and side by side with each other along the second direction B.

[0051] In addition, the support tray 1 includes a plurality of dividers 8 (preferably flat) arranged within each section 7 and extending parallel to the main walls 4A, 4B.

[0052] A set of dividers 8 included in the same section 7 defines a plurality of seats 9 configured to receive corresponding battery cells 2. Furthermore, the dividers 8 included in the same section 7 include a first series 8A and a second series 8B of dividers 8 arranged alternately with each other, such that the divider 8 of each series (8A or 8B) is inserted between two dividers in the other series (8B or 8A), except for the dividers 8 at the two ends of each section 7, the dividers at the ends are inserted between the dividers 8 in the other series 8A, 8B and the main walls 4A, 4B of the tray 1.

[0053] Reference Figure 3 The support tray 1 also includes a system 10, which is configured to adjust the size of the seat of the battery cell 2 along the second direction B.

[0054] The system 10 for adjusting the size of the seat 9 includes an actuator system 11 for each section 7, which is configured to move the separators 8 belonging to the first series 8A by a relative translational movement along direction B relative to the separators 8 belonging to the second series 8B.

[0055] Specifically, the actuator system 11 controls the movement of series 8A, 8B of the separator 8 relative to another series 8A, 8B of the separator 8, so that the distance L between two consecutive separators 8 in the same series 8A, 8B of the separator 8 remains fixed.

[0056] Preferably, the actuator system 11 of the system 10 includes a first actuator 12 and a second actuator 13, the first actuator being configured to control the movement of the separators 8 of the first series 8A along the second direction B, and the second actuator being configured to control the movement of the separators 8 of the second series 8B.

[0057] In a preferred embodiment of the invention, the first and second actuators 12 and 13 each include a pair of rods 14.

[0058] The rod 14 of actuators 12 and 13 extends along the second direction B and is rotatably supported by the support structure 3. Specifically, the rod 14 has a first end 14A rotatably connected to the first main wall 4A and a second end 14B rotatably connected to the second main wall 4B.

[0059] Preferably, one of the ends 14A and 14B of the rod 14 includes an axial extension 14C that protrudes beyond the support structure 3 toward the outside of the tray 1 for engagement by a screw, which will be further described below.

[0060] By way of example only, the axial extension 14C of the rod 14 of the first actuator 12 protrudes beyond the first main wall 4A, and the axial extension 14C of the rod 14C of the second actuator 13 protrudes beyond the second main wall 4B. Figure 3 ).

[0061] Each of the rods 14 is rotatably supported by the support structure 3 about a corresponding axis of rotation C parallel to the second direction B. At least a portion of the longitudinal extension of each rod 14 is provided with a threaded portion.

[0062] As shown in the figure, the axial extension 14C of the rod 14 is configured to be accessible from the outside, for example by a manual or automatic screwdriver that controls its rotation about axis C.

[0063] Reference Figure 6 Each partition 8 preferably has a quadrilateral shape and includes at least four through holes disposed near the peripheral portion of the partition 8.

[0064] The through holes of the separator 8 include a first pair of holes 15 and a second pair of holes 16, which are arranged along the first diagonal D and the second diagonal E of the separator 8, respectively.

[0065] For example only, we will now refer to the first series 8A of separator 8.

[0066] In this configuration, the first pair of holes 15 of the separator 8 carries an internally threaded sleeve 17, which is configured to engage the threaded portion of the rod 14 of the first actuator 12.

[0067] On the other hand, the second pair of holes 16 are configured to allow the rod 14 of the second actuator 13 to pass freely, so that the separator 8 is free relative to the rod 14.

[0068] Correspondingly, regarding the second series 8B of the separator 8, the second pair of holes 16 of the separator 8 carries an internally threaded sleeve 17, which is configured to engage the threaded portion of the rod 14 of the second actuator 13.

[0069] On the other hand, the first pair of holes 15 are configured to allow the rod 14 of the first actuator 12 to pass freely, so that the separator 8 is free relative to the rod 14.

[0070] refer to Figures 1 to 6 The operation of the system 10 for adjusting the size of the seat 9 for the battery cell 2 along direction B will be described.

[0071] The rotation of the rod 14 about the corresponding axis of rotation C can be controlled by using a manual or automatic screwdriver (not shown) to act on the axial extension 14C of the rod 14 belonging to the same actuator 12, 13.

[0072] For example, by acting on the axial extension 14C that protrudes beyond the first main wall 4A, the rotation of the rod 14 of the first actuator 12 about the corresponding axis of rotation C can be controlled. Due to the threaded connection between the sleeve 17 arranged in a pair of holes 15 of the partition 8 of the first series 8A and the external thread of the rod 14 of the first actuator 12, the partition 8 of the first series 8A is rigidly translated along the second direction B.

[0073] The advantage provided by the above mechanism is that it enables all the partitions 8 of the first series 8A to be translated uniformly, thereby maintaining a fixed distance L between two adjacent partitions 8 of the first series 8A.

[0074] Correspondingly, by acting on the axial extension 14C that protrudes beyond the second main wall 4B, the rotation of the rod 14 of the second actuator 13 about the corresponding rotation axis C can be controlled. Due to the threaded connection between the sleeve 17 arranged in a pair of holes 16 of the partition 8 of the second series 8A and the external thread of the rod 14 of the second actuator 13, the partition 8 of the second series 8B is rigidly translated along the second direction B.

[0075] The mechanism described above provides the advantage of enabling all the partitions 8 of the second series 8B to translate uniformly and synchronously, thereby keeping the distance L between two adjacent partitions 8 of the second series 8B fixed.

[0076] In order to define multiple seats 9 between the separators 8 to receive battery cells 2 of different sizes, the two series 8A, 8B of the separators can be moved to obtain the necessary dimensions of the seats 9 relative to the second direction B. Figure 8 ).

[0077] With the aid of the mechanism described above, the seat of the unit 2 can be initially enlarged to enable easy positioning of the unit 2; thereafter, the mechanism can be actuated to apply the desired load on the unit 2 along the second direction B, while ensuring that each unit 2 is subjected to substantially the same load.

[0078] refer to Figure 4 and Figure 7 The support tray 1 may include a plurality of adjusting cams 18 arranged in each section 7 of the tray 1.

[0079] The adjusting cam 18 is mounted on the cam carrier shaft 19, which extends along the second direction B and is rotatably supported at its end 19A by two main walls 4A, 4B.

[0080] The separator 8 is provided with two additional through holes 20, allowing the cam carrier shaft to pass freely through the separator 8 of the two series 8A, 8B.

[0081] Each of the adjusting cams 18 is configured to have multiple convex angles 18A (three convex angles in this example), each having two surfaces 18X, 18Y, which are substantially flat and orthogonal to each other, and are configured to provide a horizontal support plane and a lateral constraint plane for the battery cell 2 within the seat 9, respectively.

[0082] The geometry of the cam 18 is adjusted so that the surfaces 18X and 18Y of the convex angle 18A are arranged at different radial distances relative to the axis of rotation F of the cam carrier shaft 19.

[0083] Therefore, by changing the angular position of the cam carrier shaft 19, the vertical position of the horizontal support plane and the position of the side constraint plane for the battery cell 2 along direction A can be changed, thereby adjusting the size of the seat 9 for the battery cell 2 along the first direction A and along the vertical direction Z.

[0084] Therefore, as a whole, the support tray 1 can adjust the size of the seat 9 of the battery cell 2 along three spatial dimensions. Specifically, the size of the seat along direction B can be adjusted by means of the adjustment system 10, and the size of the cell along the first direction A and along the vertical direction Z can be adjusted by means of the adjustment cam 18 carried by the cam carrier shaft 19.

[0085] Another feature of the support tray 1 according to the invention relates to its ability to withstand structural loads during the molding process of the battery cell 2.

[0086] In fact, during the molding process of cell 2, various gases (i.e. hydrogen) are generated inside cell 2.

[0087] In addition to posing a danger due to its high flammability, this gas can also accumulate within monomer 2 and cause it to expand (or “bulge”), which puts pressure on the divider 8 of tray 1.

[0088] In addition, the molding process requires a controlled temperature in the molding chamber, preferably between 20°C and 60°C.

[0089] Reference Figure 6 Each partition 8 includes at least one reinforcing strip 21 arranged on its surface that does not face the seat 9.

[0090] Preferably, the strip 21 extends along one of the first or second diagonals D, E of the separator 8 and has a corresponding end 21A of the separator 8 attached at one of the first or second pairs of holes 15, 16, for example by means of a threaded connection.

[0091] The reinforcing strip 21 is configured to give the separator 8 higher structural stiffness along the second direction B, thereby limiting elastic deformation due to the expansion of the monomer 2 during the molding step.

[0092] exist Figure 8 As can be seen, in a preferred embodiment of the invention, the facing dividers 8 of adjacent seats 9 define a gap 22 between them, which performs a dual function.

[0093] First, the presence of gap 22 facilitates heat exchange between monomer 2 and the environment within the molding chamber, thereby enabling the selection of the molding step for monomer 2 to be maintained in a simpler and more uniform manner.

[0094] Secondly, the gap 22 can serve as a region in which the separator 8 can elastically deform under the stress generated by the gas originating from the monomer 2 during the molding step.

[0095] In fact, although the separators exhibit improved rigidity due to the presence of reinforcing strips 21, they can still withstand elastic deformation.

[0096] Reference Figure 8 Each battery cell 2 includes two electrical terminals 2A and a suction port 2B. The electrical terminals are configured to electrically contact the corresponding electrical terminals of the power unit, and the suction port is configured to receive the corresponding suction port of the air suction system of the molding chamber.

[0097] According to another feature of the invention, the support tray 1 can be associated with a degassing hood, which is generally indicated by reference numeral 23, and... Figure 9 As shown in the image.

[0098] The degassing hood 23 includes a gas manifold 24, which includes at least two main pipes 27, which extend along a first direction A and are connected to a plurality of suction conduits 28 extending parallel to a second direction B.

[0099] Preferably, the manifold 24 includes two main tubes 27 and a suction conduit 28 for each monomer array 200 to be formed.

[0100] Each suction conduit 28 includes a plurality of suction nozzles 29, which are configured to be positioned at a corresponding suction hole 2B of the battery cell 2.

[0101] In addition, the gas manifold 24 includes at least one discharge port 26, which is configured to provide fluid communication between the degassing hood 23 and the suction conduit of the molding chamber.

[0102] The degassing hood 23 can be removably mounted to the support structure 3 of the tray 1 and can be held in place with a plurality of locating pins 25, which are fitted into corresponding seats provided on the support structure 3. This example envisions four pins 25 at the apex of the hood, which are adapted to be received by four holes 25A at the apex of the tray. Figure 1 )middle.

[0103] The association between the degassing hood 23 and the support structure 3 provides the advantage of avoiding multiple suction ports in the molding chamber, the number of which is the same as the number of battery cells 2 to be molded; instead, the gas generated in the molding step can be evacuated through the exhaust port 26 of the gas manifold 24, which greatly simplifies the overall layout of the molding chamber.

[0104] Furthermore, since the degassing hood 23 can be removed from the support structure 3, maintenance of the suction nozzle 29 can be made easier for the operator.

[0105] In the actual structural example, the tray 1 has a length of 1630 mm along direction A, a width of 890 mm along direction B, and a height of 184 mm along the vertical direction Z. The tray has three partitions 6, which define four sections 7, each section having eight seats 9 defined by sixteen dividers 8 (i.e., eight dividers of the first series 8A and eight dividers of the second series 8B).

[0106] Of course, without prejudice to the principles of the invention, structural details and embodiments may be extensively changed relative to what is described and shown herein without departing from the scope of the invention as defined in the appended claims.

Claims

1. A tray (1) for supporting individual cells (2) of a storage battery, which can be used in a system for molding storage batteries, comprising: - A support structure (3) comprising two main walls (4A, 4B) that are parallel to each other and spaced apart, the two main walls being securely connected by two end walls (5) extending orthogonally to the two main walls (4A, 4B), and the support structure further comprising one or more partitions (6) parallel to the end walls (5), the one or more partitions connecting the two main walls (4A, 4B), and the one or more partitions dividing the space defined by the main walls (4A, 4B) and the end walls (5) into a plurality of segments (7) arranged side by side, the plurality of segments being configured to receive corresponding cell arrays (200), each array (200) comprising a plurality of battery cells (2) oriented parallel to the main walls (4A, 4B). - Multiple partitions (8) are arranged inside each of the sections (7) and parallel to the main wall (4A, 4B) to define multiple seats (9) in each section (7) which are configured to receive a corresponding battery cell (2). -System (10) for adjusting the dimensions of the seat (9) for the battery cell (2) along a direction (B) orthogonal to the main walls (4A, 4B). The feature is that the dividers (8) of each segment (7) include dividers (8) of a first series (8A), which are staggered with dividers (8) of a second series (8B). The adjustment system (10) includes an actuator system (11) for moving the separators (8) of the first series (8A) relative to the separators (8) of the second series (8B) in a direction (B) orthogonal to the main wall (4A, 4B), thereby maintaining the separators (8) of each series (8A, 8B) at a fixed distance (L) from each other.

2. The pallet according to claim 1, characterized in that, The actuator system (11) includes a first actuator (12) and a second actuator (13), the first actuator being used to move the partitions (8) of the first series (8A) along a direction (B) orthogonal to the main walls (4A, 4B) to maintain the partitions (8) of the first series (8A) at a fixed distance (L) from each other, and the second actuator being used to move the partitions (8) of the second series (8B) along a direction (B) orthogonal to the main walls (4A, 4B) to maintain the partitions (8) of the second series (8B) at a fixed distance (L) from each other.

3. The pallet according to claim 2, characterized in that, Each of the first actuator (12) and the second actuator (13) includes a pair of threaded rods (14) supported at their ends (14A, 14B) by the two main walls (4A, 4B), rotatable about an axis of rotation (C) orthogonal to the main walls (4A, 4B), and engaged in a threaded sleeve (17) carried by a series of separators (8A, 8B) of corresponding separators. The rotation of the threaded rod (14) causes the separators of the corresponding series (8A, 8B) to move along the direction (B) orthogonal to the main wall (4A, 4B) without changing the distance (L) between the separators (8). Each series (8A, 8B) has a separator (8) with a through hole (15, 16), through which the threaded rod (14) of the actuator (12, 13) of another series (8A, 8B) freely passes.

4. The tray according to any one of the preceding claims, wherein, The threaded rod (14) has an end (14C) that protrudes outward beyond the corresponding main wall (4A, 4B), the end of which can be engaged by a manual or automatic screwdriver.

5. The pallet according to claim 4, wherein, The facing separators (8) of adjacent seats (9) define a gap (22) between each other and are configured to allow the monomer (2) to expand during the molding stage.

6. The tray according to claim 5, comprising a plurality of adjusting cams (18) mounted on a cam carrier shaft (19), the cam carrier shaft being rotatably supported at its end (19A) by the main wall (4A, 4B), the adjusting cams being configured to define a plane for supporting the battery cell (2), the position of the plane along the vertical direction (Z) of the tray depending on the angular position of the cam carrier shaft (19).

7. The tray according to claim 6, wherein, The adjusting cam (18) has a profile including flat peripheral portions (18X, 18Y) arranged at different radial distances relative to the axis (F) of the corresponding cam carrier shaft (19).

8. The pallet according to claim 6, characterized in that, Each of the cams (18) is configured to further define a side constraint plane of the corresponding battery cell (2), the position of which along the direction (A) parallel to the main wall (4A, 4B) of the tray is determined by the angular position of the cam carrier axis (19).

9. The tray according to any one of the preceding claims, wherein, Each separator (8) includes at least one reinforcing strip (21).

10. The tray according to any one of the preceding claims, characterized in that, A degassing hood (23) is associated with the tray (1), the degassing hood being configured to be mounted on a support structure (3) of the tray (1), and comprising: a gas collector (24); a plurality of suction nozzles (29) configured to be positioned at corresponding degassing holes (2B) formed on the battery cell (2) to be formed; and at least one discharge port (26) in fluid communication between the degassing hood (23) and a suction conduit of the forming chamber.

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