Installation method for an electrical power storage system, container, system and associated installation

Abstract

Method for installing an electrical power storage system, container, system and associated installation. The method comprises the following steps: moving a container (14) having a self-supporting parallelepiped structure (70) with a horizontal longitudinal axis (D-D') in a horizontal transport configuration, the container (14) defining an internal volume (74) receiving a plurality of battery module storage bays, and a plurality of battery modules received in the storage bays, the movement being carried out to a site of use; at the site of use, tilting the container (14) into a vertical operating configuration in which the longitudinal axis (D-D') extends vertically, the battery modules remaining contained within the internal volume (74) during the tilting from the horizontal to the vertical configuration. Figure for the abstract: Figure 3

Description

Title of the invention: Method for installing an electrical power storage system, container, system and associated installation

[0001] The present invention relates to a method of installing an electrical power storage system.

[0002] Such an electrical power storage system comprises a parallelepiped container containing battery modules and electrical and thermal management systems for the battery modules.

[0003] The electrical power storage system is easily movable to a site of use, in particular by road, rail or sea transport.

[0004] Such electrical power storage systems contain many battery modules themselves comprising stacks of electrochemical elements (or "electrochemical cells"), for example lithium-ion elements, as well as electronic and electrotechnical components.

[0005] Battery modules generally have a parallelepiped-shaped casing. They are used on site in a horizontal configuration, in which the main partitions of maximum area of ​​the casing are arranged horizontally, the side walls of the casing being arranged vertically.

[0006] Such an electrical power storage system is very practical for supplying or receiving significant electrical power, as a complement to or replacement for an electrical network.

[0007] In certain sites of use, for example in urban or constrained areas, the available ground space for installing these electrical power storage systems may be limited. Consequently, it is known to maximize the number of battery modules in a container to increase the electrical energy density stored by the storage system for a given footprint.

[0008] To further increase the stored electrical energy density, CN 112968530 describes an electrical power storage installation, in which the containers of a plurality of electrical power storage systems are stacked one on top of the other.

[0009] Stacking containers on top of each other does increase the energy density stored per unit area on the ground, but does not give complete satisfaction.

[0010] In particular, it is necessary to mechanically reinforce the containers located lowest in the stack to enable them to support the cumulative weight of all the battery modules present in the stack.

[0011] Furthermore, the electrical connection to the network is generally made by electrically connecting each container to connection terminals located in or at ground level. To also connect containers stacked on top of other containers, it is therefore necessary to wire the containers in each stack together down to the lowest container, which is connected to a connection terminal.

[0012] This is tedious and expensive in the case where a large number of containers are stacked on top of each other.

[0013] An object of the invention is to provide a method of installing at least one electrical power storage system that increases the density of electrical power stored per unit area, while facilitating the transport and safe installation of the electrical power storage system on site.

[0014] To this end, the invention relates to a method of the aforementioned type, characterized by the following steps:

[0015] - movement of a container comprising a self-supporting structure parallelepiped with horizontal longitudinal axis in a horizontal transport configuration, the container defining an internal volume receiving a plurality of battery module storage bays, and a plurality of battery modules received in the storage bays, the movement taking place up to a site of use;

[0016] - at the site of use, switching the container to a vertical configuration of use in which the longitudinal axis extends vertically, the battery modules remaining contained within the internal volume when switching from the horizontal to the vertical configuration.

[0017] The method according to the invention may comprise one or more of the following features, taken individually or in any technically possible combination:

[0018] - it includes a preliminary step of fixing the battery modules in the bays storage, the container being in the horizontal transport configuration;

[0019] - the self-supporting structure comprises two large opposing structural faces, arranged parallel to the longitudinal axis, and two large access faces arranged perpendicular to the large structural faces between the large structural faces, the self-supporting structure comprising two small opposite faces perpendicular to the longitudinal axis, at least one large structural face being provided with salient support corners located at its geometric corners, the container resting on the salient support corners during its movement in horizontal transport configuration;

[0020] - each battery module tilts from a vertical position in a bay of storage in a horizontal position in a storage bay when switching the container from horizontal to vertical configuration.

[0021] The invention also relates to a container intended to receive a plurality of battery modules to form an electrical power storage system, the container comprising a self-supporting parallelepiped structure with a longitudinal axis, the self-supporting structure defining an internal volume containing a plurality of storage bays for the plurality of battery modules, the container being configured to switch from a horizontal transport configuration in which the longitudinal axis is horizontal to a vertical use configuration in which the longitudinal axis is vertical, keeping the battery modules in the storage bays between the horizontal transport configuration and the vertical use configuration.

[0022] The container according to the invention may comprise one or more of the following features taken individually or in any technically possible combination:

[0023] - the self-supporting structure comprises at least one large structural face, arranged parallel to the longitudinal axis, and at least one large access face arranged perpendicular to the large structural face in a manner adjacent to the large structural face;

[0024] - at least one large structural face comprises two longitudinal beams peripheral and two peripheral crossbeams connecting the two peripheral longitudinal beams, the at least one large structural face comprising at least one oblique member extending from a peripheral longitudinal beam and / or a peripheral crossbeam through the large structural face, the oblique member (being inclined at a non-zero angle with respect to each peripheral longitudinal beam and each peripheral crossbeam, the at least one large structural face being intended to be placed vertically in the vertical configuration of use;

[0025] - at least one oblique member extends from a corner of the large face structural;

[0026] - at least one large structural face comprises two oblique members converging towards the same point or diverging from the same point, the point being advantageously located on a peripheral crossbeam, or on an intermediate crossbeam arranged between the peripheral crossbeams;

[0027] - at least one large access face is devoid of oblique members;

[0028] - the self-supporting structure comprises two large opposing structural faces, arranged parallel to the longitudinal axis, two large access faces arranged perpendicular to the large structural faces between the large structural faces and at least one intermediate transverse support arranged perpendicular to the longitudinal axis, the at least one intermediate support transverse comprising two external intermediate crossbeams extending perpendicularly to the longitudinal axis, in at least one large access face, the external intermediate crossbeams being arranged vertically in the horizontal transport configuration and horizontally in the vertical use configuration;

[0029] - the at least one intermediate transverse support comprises a plurality of crossbeams internal intermediates arranged parallel between the external intermediate crossbeams;

[0030] - the self-supporting structure comprises two large opposing structural faces, arranged parallel to the longitudinal axis, two large access faces arranged perpendicular to the large structural faces between the large structural faces and at least one intermediate longitudinal support comprising two external intermediate stringers arranged respectively in the large access faces;

[0031] - the self-supporting structure comprises two small, opposite, perpendicular faces to the longitudinal axis, at least one intermediate longitudinal support comprising two external intermediate connecting cross members connecting the external intermediate stringers in the small faces;

[0032] - the at least one intermediate longitudinal support comprises, between the two external intermediate stringers, at least one internal intermediate stringer (arranged parallel to the external intermediate stringers.

[0033] The invention also relates to an electrical power storage system comprising a container as defined above, and a plurality of battery modules housed in the storage bays of the container, the battery modules preferably occupying a vertical position in the horizontal transport configuration and preferably a horizontal position in the vertical use configuration.

[0034] The invention also relates to an electrical power storage installation comprising several electrical power storage systems as defined above, arranged side by side, with their large adjacent structural faces in contact with each other.

[0035] The invention will be better understood upon reading the following description, given solely by way of example, and made with reference to the accompanying drawings, in which: - [Fig.1] Fig.1 is a three-quarter front perspective view of an electrical power storage system according to the invention, having a storage container containing a plurality of battery modules, the storage container occupying a vertical configuration of use; - [Fig.2] [Fig.2] is a view analogous to [Fig.1], in a configuration horizontal transport of the container; - [Fig. 3] [Fig. 3] is a view analogous to [Fig. 1], illustrating the structure self-supporting container of [Fig.l], taken from a first angle; - [Fig. 4] [Fig. 4] is a view analogous to [Fig. 3], taken from a second angle; - [Fig. 5] [Fig. 5] is a view of a power storage installation electrical comprising a plurality of electrical power storage systems according to the invention; - [Fig. 6] [Fig. 6] is a view analogous to [Fig. 5] of another installation electrical power storage comprising a plurality of electrical power storage systems according to the invention.

[0036] A first electrical power storage system 12 according to the invention is illustrated by figures 1 and 2.

[0037] The electrical power storage system 12 comprises a plurality of battery modules 10 and a storage container.

[0038] The storage container 14 is intended to receive, transport, and store a plurality of battery modules 10.

[0039] In addition to the battery modules 10, the storage container 14 is advantageously intended to receive, transport, and store an electrical and thermal management system for the battery modules (not shown), and a security system (not shown).

[0040] Each battery module 10 comprises a housing 16 internally delimiting a receiving volume, a plurality of electrochemical elements (not visible) arranged within the receiving volume, and electrical connection terminals (not shown). The battery module 10 further comprises a system for electrically connecting the electrochemical elements to the electrical connection terminals.

[0041] Each electrochemical cell comprises an outer prismatic casing, a cylindrical outer casing, or a pouch. Each electrochemical cell comprises anodes, cathodes, and separators (not shown), between which electrochemical reactions take place.

[0042] The electrochemical element is, for example, rechargeable. It is, for example, of the lithium-ion, sodium-ion, or alkaline electrolyte type. It includes terminals that are connected to terminals of the battery module 10 by the electrical connection system.

[0043] In the example shown in [Fig. 1], the storage container 14 is generally parallelepiped in shape. As will be seen below, and according to the invention, it is mobile between a horizontal transport configuration, shown in [Fig.2], and a vertical use configuration, shown in [Fig.1].

[0044] As illustrated by figures 1 to 4, the storage container 14 comprises a self-supporting parallelepiped structure 70 defining an internal volume 74 and bays 72 for storing modules 10 within the internal volume 74.

[0045] The storage container 14 further comprises electrical connection terminals 76 for connecting the power storage system 12 to an electrical network. Advantageously, it includes sealing partitions 80 and access doors 82 to the interior volume 74 of the self-supporting structure 70.

[0046] With reference to figures 3 and 4, the self-supporting structure 70 is of rectangular parallelepiped shape having a longitudinal axis DD' extending vertically in the vertical configuration of use, visible in figures 3 and 4 and horizontally in the horizontal transport configuration, represented in [Fig.2],

[0047] The self-supporting structure 70 further defines a first transverse axis EE' intended to extend horizontally in the horizontal configuration and also horizontally in the vertical configuration of the storage container 14. It also defines a second transverse axis F-F', intended to extend vertically in the horizontal configuration of the storage container 14, and horizontally in the usage configuration of the storage container 14.

[0048] The dimensions of the self-supporting structure 70 are governed by transport standards, in particular by ISO1496-1 dated September 19, 2015 or ISO668 dated May 1, 2020 with its amendment 1 of 2022.

[0049] In its horizontal transport configuration, the storage container 14 has, for example, a length greater than 2 m, in particular between 2.5 m and 15 m, a width greater than 1 m, in particular between 2 m and 4 m, and a height greater than 1 m, in particular between 2 m and 4 m.

[0050] The storage container 14 is in particular a 20-foot container known as a "high cube" measuring 6.058 m in length, 2.438 m in width, 2.896 m in height in its horizontal transport configuration.

[0051] The transport container 14 has protruding corners 78 (often called "ISO corners") at each of the geometric corners of the self-supporting structure 70.

[0052] The self-supporting structure 70 comprises two large opposing structural faces 84A, 84B, arranged perpendicular to the second transverse axis F-F', and two large access faces 86A, 86B arranged perpendicular to the first transverse axis E-E', between the large structural faces 84A, 84B.

[0053] The self-supporting structure 70 comprises, at the longitudinal ends of the large faces 84A, 84B, 86A, 86B, two small faces 87C, 87D opposite, perpendicular to the longitudinal axis D-D'.

[0054] The self-supporting structure 70 further comprises at least one intermediate transverse support 88A, 88B extending perpendicularly to the longitudinal axis D-D', and at least one intermediate longitudinal support 90A, 90B extending perpendicularly to the second transverse axis FF' and parallel to a plane defined by the longitudinal axis D-D' and by the first transverse axis E-E'.

[0055] The self-supporting structure 70 also includes a plurality of inclined members 92A to 92F and advantageously at least one external intermediate beam 99A, 99B arranged in the large structural faces 84A, 84B to reinforce them.

[0056] With reference to figures 3 and 4, each large access face 86A, 86B comprises two peripheral longitudinal beams 94 and two peripheral crossbeams 96 connecting the two peripheral longitudinal beams 94 together.

[0057] The peripheral longitudinal beams 94 and peripheral crossbeams 96 define geometric edges and geometric corners of the self-supporting structure 70.

[0058] The peripheral longitudinal beams 94 extend parallel to the longitudinal axis D-D', along lateral edges of the large access face 86A, 86B.

[0059] The peripheral crossbeams 96 extend parallel to the second transverse axis F-F', connecting together the ends of each peripheral longitudinal beam 94 along transverse edges of each large access face 86A, 86B.

[0060] Each large structural face 84A, 84B has two peripheral longitudinal beams 94 common with the large access faces 86A, 86B, and two connecting crossbeams 98 connecting the respective corners of each large structural face 84A, 84B together.

[0061] The connecting cross members 98 are parallel to the first transverse axis E-E'.

[0062] The small faces 87C, 87D have peripheral crossbeams 96, common with the large access faces 86A, 86B, and connecting crossbeams 98 common with the large structural faces 84A, 84B.

[0063] They extend to the longitudinal ends of the self-supporting structure 70, perpendicular to the longitudinal axis D-D'.

[0064] In the example shown in figures 3 and 4, the self-supporting structure 70 includes several intermediate transverse supports 88A, 88B located perpendicular to the longitudinal axis D-D', at different longitudinal positions along this axis D-D'.

[0065] In the example shown, each intermediate transverse support 88A, 88B comprises two external intermediate cross members 100A, 100B extending perpendicular to the longitudinal axis D-D', in the large access faces 86A, 86B, connecting the peripheral longitudinal beams 94.

[0066] Each transverse intermediate support 88A, 88B further comprises two external connecting intermediate cross members 102A, 102B, also extending perpendicularly to the longitudinal axis D-D' in the large structural faces 84A, 84B. The two external connecting intermediate cross members 102A, 102B connect the external intermediate cross members 100A, 100B to each other.

[0067] Each intermediate transverse support 88A, 88B further comprises in this example a plurality of internal connecting intermediate crossbeams 104 arranged in the internal volume 74. The internal connecting intermediate crossbeams 104 connect the external intermediate crossbeams 100A, 100B parallel to the external connecting intermediate crossbeams 102A, 102B.

[0068] In vertical configuration of use, the intermediate transverse supports 88A, 88B, each located in a plane perpendicular to the longitudinal axis D-D', define successive stages for receiving battery modules 10.

[0069] Each intermediate longitudinal support 90A, 90B extends into the internal volume 74, parallel to the large structural faces 84A, 84B.

[0070] Each longitudinal intermediate support 90A, 90B comprises two external intermediate stringers 110A, 110B arranged respectively in the large access faces 86A, 86B and two external intermediate connecting cross members 112A, 112B connecting the external intermediate stringers 110A, 110B in the small faces 87C, 87D.

[0071] Each longitudinal intermediate structure 90A, 90B further comprises at least one internal intermediate stringer 114A, 114B arranged parallel to the external intermediate stringers 110A, 110B between the external connecting intermediate cross members 112A, 112B.

[0072] The external intermediate stringers 110A, 110B extend parallel to the longitudinal axis D-D' and parallel to the peripheral longitudinal beams 94, between the peripheral cross members 96. They intersect the external intermediate cross members 100A, 100B of the transverse intermediate supports 88A, 88B.

[0073] The external intermediate connecting cross members 112A, 112B connect the peripheral cross members 96, parallel to the first transverse axis E-E', and parallel to the internal intermediate connecting cross members 104 of the transverse intermediate supports 88A, 88B.

[0074] The internal intermediate longitudinal members 114A, 114B connect the external intermediate connecting cross members 112A, 112B, between the external intermediate longitudinal members 110A, 110B, parallel to the longitudinal axis D-D'. They intersect the internal intermediate connecting crossbeams 104 of the transverse intermediate supports 88A, 88B.

[0075] In vertical configuration of use, the longitudinal intermediate supports 90A, 90B define between them, at each successive stage, separate compartments for housing battery modules 10, at least one electrical and thermal management system for the battery modules, at least one safety system and connection terminals 76.

[0076] The oblique members 92A to 92B extend into the large structural faces 84A, 84B. They extend obliquely within the large structural faces 84A, 84B, intersecting both the peripheral longitudinal beams 94 and the peripheral crossbeams 96.

[0077] In the vertical configuration shown as an example in [Fig.3], each large structural face 84A, 84B comprises from top to bottom at least two oblique members 92A, 92B, converging from an upper connecting cross member 98 towards the first transverse intermediate longitudinal support 88A, then two oblique members 92C, 92D diverging from the first transverse intermediate support 88A towards the second transverse intermediate support 88B and two oblique members 92E, 92F converging from the second transverse intermediate support 88B towards a lower connecting cross member 98.

[0078] The oblique members 92A, 92B extend from corners of the self-supporting structure 70 to a common convergence point 120 on an external intermediate connecting cross member 102A, 102B of the transverse intermediate structure 8A.

[0079] The oblique members 92C, 92D start from the common convergence point 120 and extend to the intersection points 122 between the external intermediate connecting cross member 102A, 102B and the peripheral longitudinal beams 94.

[0080] The oblique members 92E, 92F converge towards a common point of convergence 124 on the lower connecting cross member 98 from the points of intersection 122.

[0081] The presence of the oblique members 92A to 92F significantly reinforces the mechanical properties of the large structural faces 84A, 84B to enable the self-supporting structure 70 to bear the entire weight of the storage bays 72 and the battery modules 10 contained in the storage bays 72 in the vertical configuration of use and during the switch from the horizontal transport configuration to the vertical configuration of use.

[0082] Each external intermediate beam 99A, 99B extends parallel to the longitudinal axis B-B' in a respective large structural face 84A, 84B. It passes here through the common convergence points 120, 124.

[0083] The longitudinal beams, crossbeams, members and stringers of the self-supporting structure 70 are all made, for example, of steel. They are made from solid or hollow profiles having a Young's modulus, as measured by Standard EN-10027-2, dated June 20, 2015, greater than, for example, 150 GPa and in particular between 200 GPa and 220 GPa.

[0084] The storage bays 72 extend between a large structural face 84A, 84B and an intermediate longitudinal support 90A, 90B adjacent to the large structural face 84A, 84B.

[0085] Each storage bay 72 in this example comprises at least one vertical succession of facing support strips 130. For each pair of facing support strips 130, a first support strip 130 is supported by the large structural face 84A, 84B and a second support strip 130 is supported by the intermediate longitudinal support 90A, 90B.

[0086] Each pair of opposing support strips 130 thus defines a battery module 10 support plane, arranged perpendicular to the longitudinal axis D-D'. The support plane is horizontal in the vertical configuration of use.

[0087] Thus, in the self-supporting structure 70 shown in [Fig.3], at each successive floor, the self-supporting structure 70 comprises two battery module reception compartments 10, each comprising a plurality of storage bays 72 storing battery modules 10 in a horizontal position in the vertical configuration of use of the container 14.

[0088] Furthermore, between the longitudinal intermediate supports 90A, 90B, the self-supporting structure 70 defines at each successive floor, a receiving compartment for the electrical and thermal management system and / or the security system, and / or the connection terminals 76.

[0089] In the example shown in [Fig.1], the terminals 76 are located in the lowest intermediate compartment when the container 14 occupies its vertical configuration of use.

[0090] The electrical and thermal management system is connected to each of the battery modules 10 via cabling. It is configured to control the voltage and current delivered by each battery module 10 when electrical power is supplied by the battery module 10 to the connection terminals 76 connected to an electrical power consumer external to the container 14.

[0091] It is configured to control the voltage and intensity of the electric current delivered to each battery module 10, when recharging the battery module 10 from the terminals 76 connected to an electrical power supplier, external to the container 14.

[0092] The partitions 80 form a non-structural covering applied to the self-supporting structure 70. They do not bear any vertical or horizontal load.

[0093] In the example shown in figures 1 and 2, the large structural faces 84A, 84B and the small faces 87C, 87D are fitted with permanently mounted partitions 80.

[0094] The large access faces 86A, 86B are provided with at least one door 82, preferably access doors 82 to each compartment on each floor to allow selective access to the interior volume 74.

[0095] The doors 82 are for example arranged on one of the large access faces 86A, 86B, or on both large access faces 86A, 86B to allow access to the interior volume 74, on either side of the first transverse axis E-E'.

[0096] The installation of an electrical power storage system 12 according to the invention at a site of use will now be described.

[0097] Initially, the storage container 14 is arranged in its horizontal transport configuration shown in [Fig.2].

[0098] The large main access faces 86A, 86B extend vertically, while the large structural faces 84A, 84B extend horizontally. The small faces 87C, 87D also extend vertically, perpendicular to the large main access faces 86A, 86B.

[0099] The longitudinal axis DD' and the first transverse axis EE' are arranged horizontally. In contrast, the second transverse axis FF' extends vertically.

[0100] The doors 82 are then opened to allow the battery modules 10 to be loaded into the storage bays 72.

[0101] The battery modules 10 are then inserted into the storage bays 72 in a vertical transport position. Their weight is advantageously supported by the longitudinal intermediate supports 90A, 90B which extend horizontally.

[0102] Then, the doors 82 are closed. The storage container 14, still in its horizontal transport configuration, is then loaded into a transport vehicle. It is positioned resting on the projecting corners 78 of one of the large structural faces 84A, 84B for transport to the site of use.

[0103] At the site of use, the storage container 14 is switched from its horizontal transport configuration to its vertical use configuration.

[0104] Following this tilting, the small faces 87C, 87D are arranged horizontally, while the large structural faces 84A, 84B are arranged vertically. The self-supporting structure 70 rests on the projecting corners 78 of a small face 87C, 87D.

[0105] The longitudinal axis DD' then extends vertically and the second transverse axis FF' as well as the first transverse axis EE' extend horizontally.

[0106] The intermediate transverse supports 88A, 88B also extend horizontally.

[0107] The battery modules 10 tilt into a horizontal operating position. Their weight is supported by the support strips 130 of the storage bays 72, and is taken up by the large structural faces 84A, 84B and by the longitudinal intermediate supports 90A, 90B.

[0108] Thanks to the reinforced structure of the storage container 14, resulting in particular from the large structural faces 84A, 84B including the oblique members 92A to 92F and the longitudinal intermediate beam 99A, 99B, possibly in combination with the longitudinal beams 110A, 110B of the longitudinal intermediate supports 90A, 90B, the weight of all the battery modules 10 during and after the tilting from the horizontal transport configuration to the vertical use configuration is supported very effectively. This is the case even if the number of battery modules 10 stacked vertically relative to each other is much greater than in the case where the storage container 14 extends horizontally.

[0109] The natural modes of the self-supporting structure 70 are optimized to be greater than the accelerated frequencies of seismic standards (for example, IEEE 693, dated April 10, 2019 or Eurocode 8, dated September 1, 2005).

[0110] The static stresses in the vertical configuration of use generally remain below 50% of the elastic limit, even when supporting the weight of all the battery modules 10, thanks to the presence of the self-supporting structure 70 as configured.

[0111] Similarly, the static stresses in the horizontal transport configuration are advantageously less than 50% of the elastic limit, including when the storage container 14 is lifted by its upper corners to be loaded, for example, onto a transport vehicle.

[0112] Furthermore, in horizontal transport configuration, when several storage containers 14 are arranged one on top of the other, the storage container 14 is able to meet the ISO 1496 and ISO 668 transport standards mentioned above.

[0113] The transverse rigidity of the storage container 14 is also adequate for maritime transport, particularly in terms of shear stress experienced by the storage container 14. Furthermore, the storage container 14 is configured to be tilted from the horizontal transport configuration to the vertical use configuration by passing through a plurality of inclined configurations in which the angle between the longitudinal axis BB' and the horizontal gradually increases from 0° to 90°.

[0114] At 45° of tilting, all points of the self-supporting structure 70 generally experience a stress less than 50% of the elastic limit.

[0115] Similarly, the self-supporting structure 70 is resistant in vertical configuration of use in the case of an earthquake even when containing all the battery modules 10.

[0116] The storage container 14 is therefore particularly efficient for being loaded and transported in a horizontal transport configuration, in the manner of a conventional transport container.

[0117] The storage container 14 is further structured to be switched at the site of use to change from the horizontal transport configuration to a vertical use configuration.

[0118] In the vertical configuration of use, the footprint of the container 14 decreases significantly, so that the electrical power storage system 12 has a high density of available electrical power per square meter of floor space.

[0119] In one variant (not shown), in the horizontal transport configuration, at least one large access face 86A, 86B extends horizontally and defines a top face of the self-supporting structure 70. The large access face 86A, 86B is provided with at least one door 82 to provide access to the interior volume 74.

[0120] In this variant, the large structural faces 84A, 84B extend vertically in the horizontal transport configuration.

[0121] In one embodiment shown in [Fig. 5], an electrical power storage installation comprises several electrical power storage systems 12 arranged side by side, with their large adjacent structural faces 84A, 84B in contact with each other. Thus, several rows 150 of electrical power storage systems 12 are formed, with an intermediate corridor 152 between the electrical power storage systems 12.

[0122] The intermediate corridor 152 is advantageously provided with access platforms 154 to the different floors of the internal volume 74 of each storage container 14 and with a staircase 156 providing access to the access platforms 154.

[0123] Such an installation, with the coupling of several electrical power storage systems 12 having adjacent containers 14, is advantageous in terms of resistance to earthquakes and to avoid the appearance of vibration modes at frequencies below 10 Hz.

[0124] In another variant, visible in [Fig. 6], several rows 150 of electrical power storage systems 12 are formed, without an intermediate corridor 152. The electrical power storage systems 12 of two consecutive rows 150 are arranged back to back, with their large faces 86A, 86B adjacent opposite each other, advantageously in contact with each other.

Claims

Demands

1. Method of installing an electrical power storage system (12), comprising the following steps: - moving a container (14) having a self-supporting parallelepiped structure (70) with horizontal longitudinal axis (D-D') in a horizontal transport configuration, the container (14) defining an internal volume (74) receiving a plurality of storage bays (72) of battery modules (10), and a plurality of battery modules (10) received in the storage bays (72), the movement being carried out to a site of use; - on the site of use, tilting the container (14) into a vertical use configuration in which the longitudinal axis (D-D') extends vertically, the battery modules (10) remaining contained in the internal volume (74) during the tilting from the horizontal configuration to the vertical configuration.

2. Method according to claim 1, comprising a prior step of fixing the battery modules (10) in the storage bays (72), the container (14) being in the horizontal transport configuration.

3. A method according to any one of the preceding claims, wherein the self-supporting structure (70) comprises two large opposing structural faces (84A, 84B), arranged parallel to the longitudinal axis (D-D'), and two large access faces (86A, 86B) arranged perpendicular to the large structural faces (84A, 84B) between the large structural faces (84A, 84B), the self-supporting structure (70) comprising two small opposing faces (87C, 87D) perpendicular to the longitudinal axis (D-D'), at least one large structural face (84A, 84B) being provided with projecting support corners (78) located at its geometric corners, the container (14) resting on the projecting support corners (78) during its movement in horizontal transport configuration.

4. A method according to any one of the preceding claims, wherein each battery module (10) switches from a vertical position in a storage bay (72) to a horizontal position in a storage bay (72) when the container (14) is switched from the horizontal configuration to the vertical configuration.

5. Container (14) intended to receive a plurality of battery modules (10) to form an electrical power storage system (12), the container (14) comprising a parallelepiped self-supporting structure (70) with longitudinal axis (D-D'), the self-supporting structure (70) defining an internal volume (74) containing a plurality of storage bays (72) of the plurality of battery modules (10), the container (14) being configured to switch from a horizontal transport configuration in which the longitudinal axis (D-D') is horizontal to a vertical use configuration in which the longitudinal axis (D-D') is vertical, retaining the battery modules (10) in the storage bays (72) between the horizontal transport configuration and the vertical use configuration.

6. Container (14) according to claim 5, wherein the self-supporting structure (70) comprises at least one large structural face (84A, 84B), arranged parallel to the longitudinal axis (D-D'), and at least one large access face (86A, 86B) arranged perpendicular to the large structural face (84A, 84B) in a manner adjacent to the large structural face (84A, 84B).

7. Container (14) according to claim 6, wherein at least one large structural face (84A, 84B) comprises two peripheral longitudinal beams (94) and two peripheral cross members (96) connecting the two peripheral longitudinal beams (94), at least one large structural face (84A, 84B) comprising at least one oblique member (92A to 92F) extending from a peripheral longitudinal beam (94) and / or a peripheral cross member (96) through the large structural face (84A, 84B), the oblique member (92A to 92F) being inclined at a non-zero angle with respect to each peripheral longitudinal beam (94) and each peripheral cross member (96), at least one large structural face (84A, 84B) being intended to be placed vertically in the vertical configuration of use.

8. Container (14) according to claim 7, in which at least one oblique member (92A, 92B) extends from a corner of the large structural face (84A, 84B).

9. Container (14) according to any one of claims 7 or 8, wherein at least one large structural face (84A, 84B) comprises two oblique members (92A, 92B; 92C, 92D; 92E, 92F) converging towards the same point (120; 124) or diverging from the same point (120), the point (120; 124) being advantageously located on a peripheral cross member (96), or on an intermediate cross member (102A, 102B) arranged between the peripheral cross members (96).

10. Container (14) according to any one of claims 6 to 9, wherein at least one large access face (86A, 86B) is devoid of oblique members (92A to 92F).

11. Container (14) according to any one of claims 6 to 10, wherein the self-supporting structure (70) comprises two opposing large structural faces (84A, 84B) arranged parallel to the longitudinal axis (D-D'), two large access faces (86A, 86B) arranged perpendicular to the large structural faces (84A, 84B) between the large structural faces (84A, 84B), and at least one transverse intermediate support (88A, 88B) arranged perpendicular to the longitudinal axis (D-D'), the at least one transverse intermediate support (88A, 88B) having two external intermediate crossbeams (100A, 100B) extending perpendicularly to the longitudinal axis (D-D'), in at least one large access face (86A, 86B), the external intermediate crossbeams (100A, 100B) being arranged vertically in the horizontal transport configuration and horizontally in the vertical use configuration.

12. Container (14) according to claim 11, wherein at least one intermediate transverse support (88A, 88B) comprises a plurality of internal intermediate crossbeams (104) arranged parallel between the external intermediate crossbeams (100A, 100B).

13. Container (14) according to any one of claims 6 to 12, wherein the self-supporting structure (70) comprises two large opposing structural faces (84A, 84B), arranged parallel to the longitudinal axis (D-D'), two large access faces (86A, 86B) arranged perpendicular to the large structural faces (84A, 84B) between the large structural faces (84A, 84B) and at least one intermediate longitudinal support (90A, 90B) comprising two external intermediate stringers (110A, 110B) arranged respectively in the large access faces (86A, 86B).

14. Container (14) according to claim 13, wherein the self-supporting structure (70) comprises two small opposing faces (87C, 87D) perpendicular to the longitudinal axis (D-D'), at least one intermediate longitudinal support (90A, 90B) comprising two external intermediate connecting cross members (112A, 112B) connecting the external intermediate stringers (110A, 110B) in the small faces (87C, 87D).

15. Container (14) according to claim 13 or 14, wherein at least one intermediate longitudinal support (90A, 90B) comprises, between the two external intermediate stringers (110A, 110B), at least one internal intermediate stringer (114A, 114B) arranged parallel to the external intermediate stringers (110A, 110B).

16. Electrical power storage system, comprising a container (14) according to any one of claims 5 to 15, and a plurality of battery modules (10) housed in the storage bays (72) of the container (14), the battery modules (10) preferably occupying a vertical position in the horizontal transport configuration and preferably a horizontal position in the vertical use configuration.

17. Electrical power storage installation comprising several electrical power storage systems (12) according to claim 16, arranged side by side, with their large structural faces (84A, 84B) adjacent in contact with each other.

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