Memory cell arrangement and memory cell operating arrangement with a memory cell arrangement

Abstract

Storage cell arrangement (18) for storing electrical energy comprising at least one storage cell (28), preferably a plurality of storage cells (28), such as a battery or accumulator, with a cell shell (30) and with cell contacts (32) which can be contacted from outside the cell shell (30) in order to connect the storage cell (28) electrically to an electrical load or a voltage source, the storage cell arrangement (18) further comprising an arrangement housing (20) surrounding the storage cell (28) with a fluid inlet (48) and a fluid outlet (50) in order to introduce a cooling fluid into the arrangement housing (20) and to discharge it again, wherein at least sectionally between the arrangement housing (20) and the at least one storage cell (28) a fluid flow space (46) is provided, which forms at least part of the flow path of the cooling fluid between the fluid inlet (48) and the fluid outlet (50),characterized in that the cell shell (30) is fluid-tight and the storage cell (28) including its cell contacts (32) is completely enclosed by the arrangement housing (20) and that the fluid flow space (46) is a gap space (46) between an outer wall region of the cell shell (30) and an inner wall region (42) of the arrangement housing (20), wherein the gap height in a section closer to the fluid supply line (48) is greater than in a section closer to the fluid outlet (50) of the flow path of the cooling fluid located inside the arrangement housing (20).

Description

[0001] The present application relates to a storage cell arrangement for storing electrical energy, comprising at least one storage cell, such as a battery or accumulator, preferably a plurality of storage cells with a cell shell and with cell contacts which can be contacted from outside the cell shell in order to connect the storage cell electrically to an electrical load or a voltage source, the storage cell arrangement further comprising an arrangement housing surrounding the storage cell with a fluid inlet and a fluid outlet in order to introduce a cooling fluid into the arrangement housing and to discharge it again, wherein at least sectionally a fluid flow space is provided between the arrangement housing and the at least one storage cell, which forms at least part of the flow path of the cooling fluid between the fluid inlet and the fluid outlet.

[0002] A generic storage cell arrangement with a plurality of storage cells for storing electrical energy is known from DE 10 2012 218 102 A1. Further storage cell arrangements are known from US 2010 / 0 104 927 A1 and from US 6 482 542 B1.

[0003] The power output or capacity of a storage cell, especially in the form of a lithium-ion battery, is highly temperature-dependent. This also applies to the lifespan of the storage cell, regardless of whether the lifespan is measured in calendar years or, as with rechargeable storage cells, in the number of charge cycles.

[0004] The German patent application DE 10 2012 218 102 A1 describes a method for partially immersing multiple storage cells in a fluid bath, provided in a tray, for temperature control. To ensure uniform temperature control of the storage cells, DE 10 2012 218 102 A1 proposes circulating cooling fluid through the tray, i.e., supplying it via a fluid inlet and removing it via a fluid outlet.

[0005] In this process, the section of the memory cells containing the cell contacts protrudes from the fluid bath and is not wetted by the cooling fluid. Thus, the cell contacts, which are subject to particularly high thermal stress, are not cooled by the cooling fluid that surrounds and convectively cools the other sections of the memory cells.

[0006] Not only can the known memory cell arrangement be improved with regard to cooling performance, which has a positive effect on the performance and service life of the memory cells arranged in the memory cell arrangement, but, with the exception of the cell contacts from the convective cooling fluid, high sealing requirements must also be met in the arrangement housing to prevent short circuits from being created on individual memory cells by leaking cooling fluid.

[0007] The object of the present invention is to provide an improved memory cell arrangement compared to the above-mentioned prior art, which avoids the aforementioned disadvantages.

[0008] The present invention solves this problem by means of a generic storage cell arrangement in which the cell shell is fluid-tight and the storage cell, including its cell contacts, is completely enclosed by the arrangement housing and the fluid flow space is a gap space between an outer wall region of the cell shell and an inner wall region of the arrangement housing, wherein the gap height in a section closer to the fluid supply is greater than in a section closer to the fluid discharge of the flow path of the cooling fluid located inside the arrangement housing.

[0009] The fluid tightness of the cell shell is a prerequisite for the storage cell to be completely surrounded by cooling fluid. This allows for uniform convective cooling of the storage cell by cooling fluid across its entire outer surface.

[0010] The complete enclosure of the memory cell, including its cell contacts, by the housing is also a technical prerequisite for ensuring that the entire outer surface of the memory cell can be wetted by cooling fluid and thus convectively cooled by cooling fluid. The memory cell is therefore preferably located entirely within an internal volume defined by the housing.

[0011] With regard to the fluid tightness of the cell shell, particular attention must be paid to fluid tightness in the boundary area between the cell contacts and a cell shell material different from these, so that preferably the entire outer surface of a storage cell represents an insurmountable barrier for the cooling fluid at least during the expected lifetime of the storage cell.

[0012] To ensure that the cell contacts, which are subjected to high thermal stress during operation, can be cooled, the cell contacts of at least one cell can be designed to project at least partially, preferably completely, into the fluid flow chamber. This allows the cell contacts to be convectively cooled by the cooling fluid flowing through the fluid flow chamber during operation of the storage cell arrangement. The heat generated at the cell contacts can thus be effectively dissipated by the cooling fluid. Preferably, the cell contacts are fully exposed into the fluid flow chamber. During operation, cell connectors, which can electrically connect the cell contacts of adjacent storage cells, can cover sections of the cell contacts. However, since thermal and electrical conductivity are generally correlated for most materials, the heat generated at the cell contacts can also be dissipated to the cooling fluid via the cell connectors.

[0013] According to an advantageous embodiment of the present invention, the storage cell arrangement can comprise a plurality of storage cells in which cell contacts are electrically connected to one another by cell connectors, wherein the cell connectors can project at least partially or preferably completely into the fluid flow space or be surrounded by it.

[0014] This in turn ensures the largest possible wetting of the cell connectors by cooling fluid.

[0015] To ensure a fluid flow space between the arrangement housing and the at least one storage cell, a spacer can be provided between the at least one storage cell and an inner wall area of ​​the arrangement housing pointing towards the storage cell.

[0016] In principle, the spacer can be a separate component integrated into the assembly housing. The spacer can be inserted into the assembly housing and attached to it, for example, by adhesive bonding and / or by appropriate fastening elements. Additionally or alternatively, the spacer can be connected to at least one memory cell, ensuring the correct relative alignment of the spacer and the memory cell.

[0017] From a manufacturing and assembly perspective, the spacer is advantageously configured as at least one rib projecting from the housing into the assembly volume enclosed by the housing. The rib is particularly preferably formed integrally with the housing, for example by injection molding. Thus, not only can the housing be advantageously stiffened by providing ribs, but the ribs can also serve to provide the necessary fluid flow space between the storage cell and the housing.

[0018] Furthermore, the arrangement and design of ribs on the inner wall areas of the housing can guide the cooling fluid flow as desired. This allows for the most comprehensive possible circulation of the cooling fluid around the at least one storage cell within the housing, while minimizing dead zones where no cooling fluid flow occurs. The interaction of the housing's inner wall area, the projecting rib, and the cell shell against the rib creates a fluid flow chamber that prevents fluid-dynamic short circuits between the fluid supply and discharge. This ensures the desired maximum circulation of the cooling fluid around the storage cells.

[0019] On the path from the fluid inlet to the fluid outlet, pressure losses occur due to friction of the cooling fluid against the walls bounding the fluid flow chamber. To compensate for these pressure losses, it can be provided that a dimension of the fluid flow chamber, i.e., a clear width in a spatial direction, is larger in a section closer to the fluid inlet than in a section closer to the fluid outlet.

[0020] To minimize the amount of circulating cooling fluid, the fluid flow chamber is designed as a gap chamber, i.e., a flow chamber whose dimensions, measured in the direction of distance between the inner wall region of the assembly housing and the outer wall region of the cell shell, are small compared to dimensions perpendicular to these dimensions. It is advantageous that, to compensate for pressure losses of the flowing cooling fluid, the gap height is greater in a section closer to the fluid inlet than in a section closer to the fluid outlet of the cooling fluid flow path inside the assembly housing.

[0021] It is possible to provide for two different clear widths or gap heights of the fluid flow space, with the clear width of the fluid flow space changing abruptly from the fluid inlet to the fluid outlet. Furthermore, when using multiple storage cells in a single housing – which will be the standard application – it is possible for the clear width, particularly the gap height, to change abruptly, but in several small steps, for example, from storage cell to storage cell, or from one group of storage cells to the group of storage cells closest to the fluid flow group from the fluid inlet to the fluid outlet.

[0022] Since the housing can be manufactured using a forming process, such as injection molding, it is also possible for the clear width of the fluid flow space, in particular the gap height, to change continuously from the fluid supply to the fluid discharge.

[0023] To increase the positioning reliability of at least one memory cell, it can be provided that the memory cell arrangement comprises a frame structure designed separately from the arrangement housing, which is arranged in the arrangement housing and positions an engagement section of the at least one memory cell relative to the arrangement housing.

[0024] A simple and stable arrangement of the at least one memory cell in the housing can be achieved by having the at least one memory cell rest with one longitudinal end against an inner wall of the housing, in particular against one or more projecting ribs, and engaging with the aforementioned frame structure at its opposite longitudinal end, for example, in a contact engagement with engagement features of the frame structure. Thus, the frame structure can positively lock the longitudinal end of the memory cell associated with it in position. The engagement feature(s) of the frame structure can partially or preferably completely enclose the engagement section of the at least one memory cell associated with the frame structure.

[0025] Preferably, the inner wall of the arrangement housing, against which a longitudinal end of the storage cell rests, is an inner wall that is predominantly or exclusively horizontally oriented in the ready-to-use, fully assembled state of the arrangement housing, so that the dead weight of the storage cell can be absorbed by the arrangement housing by placing the storage cell on the inner wall.

[0026] Since the longitudinal end adjacent to the inner wall of the arrangement housing preferably rests on the inner wall, the longitudinal end of the memory cell closer to the frame structure preferably has the cell contacts, making them particularly easy to access.

[0027] The fluid flow chamber, designed to circulate around at least one storage cell within the housing, can be located not only between the housing and the storage cell, but also, if the storage cell arrangement—as is typically the case—comprises multiple storage cells, each with cell contacts and a cell shell, between adjacent storage cells within the housing. For this purpose, storage cells from a plurality of cells within the housing can be spaced apart to form a fluid flow chamber between them. This allows cooling fluid to circulate not only around a block of several cells within the housing, but also around individual cells from a plurality of storage cells within the housing. This improves heat dissipation from the storage cells and thus their temperature control at a near-constant temperature.

[0028] To define the distance between memory cells in an array housing, projecting lugs can be provided on the frame structure, which act as spacers and extend into the gaps between adjacent memory cells. These projecting lugs can simultaneously serve as the aforementioned engagement features, with a contact surface that engages with the cell shell. Preferably, a projecting lug has two opposing contact surfaces, each of which engages with a different cell shell.

[0029] To accommodate the storage cells, the housing must provide a certain volume. This can be ensured by the housing having a tray with a bottom and side walls. In the fully assembled, operational state of the storage cell arrangement, the bottom is preferably arranged predominantly or completely horizontally, so that one or more storage cells, with one longitudinal end to support their weight, preferably face the inner wall of the tray's bottom.

[0030] To prevent coolant loss, it is preferred that the housing also includes a lid that closes the reservoir. The lid, like the reservoir, can itself define a portion of the housing's volume and thus be reservoir-like. Preferably, the entire housing volume is provided by the reservoir to facilitate the assembly of the storage cell array, such that the clear height of the reservoir's interior volume exceeds the dimensions of the storage cells arranged within the reservoir in the vertical direction of the reservoir. In this case, the lid can preferably be flat.

[0031] According to an advantageous embodiment of the present invention, the lid can be essentially flat, and the assessment of the lid's flatness, as defined in the present application, should not be affected by stiffening or fastening ribs and / or fastening grooves formed on the lid. Such formations, which are small compared to the overall dimensions of the lid in its two main dimensional directions, should be disregarded when assessing the lid's flatness.

[0032] For particularly effective positioning of at least one or more memory cells within the tray, it is advantageous for the frame structure to be attached to the tray. To facilitate repairs, the frame structure is preferably detachably attached to the tray, for example by screws. However, a simple permanent attachment, such as a clip, should not be excluded, although its removal is at least more difficult compared to a screw connection.

[0033] The housing can be easily closed, with good sealing of the resulting gap, if the lid is connected to an edge area of ​​the tub surrounding the frame structure. Here too, to facilitate repairs, the connection between the lid and the edge area should preferably be detachable.

[0034] The attachment of the frame structure to the tub can be located radially within the edge region of the tub connected to the lid, so that each lid-tub and frame structure-tub connection has its own connection points and connecting means. However, it should not be excluded that the lid-frame structure and tub are connected to each other via common connecting means, for example by a sandwich-like arrangement of a connecting area of ​​the frame structure between a connecting area of ​​the lid and the edge region of the tub.

[0035] To achieve the densest possible packing of several memory cell arrangements side by side, it can be provided that on different, preferably opposite, sides of the volume enclosed by the arrangement housing, an edge region of the arrangement housing projects from the rest of the housing body, wherein the edge regions – relative to a intended installation surface of the arrangement housing – are arranged at different height levels such that the extent areas of the edge regions located on different sides of the volume enclosed by the arrangement housing do not overlap in the vertical direction above the installation surface. In this case, the edge region on one side of the arrangement housing can be arranged above or below an edge region of an adjacent memory cell arrangement.

[0036] The present application further relates to a storage cell operating arrangement with a storage cell arrangement according to the invention, as described and further developed above, which further comprises a coolant reservoir connected to the fluid supply line for fluid circulation and a coolant pump, wherein the coolant pump is configured to generate a pressure difference between the coolant reservoir and the storage cell arrangement in order to generate a coolant flow along the pressure gradient. To enable the complete circulation of the storage cell(s) in the arrangement housing, the invention provides that the coolant is electrically non-conductive. For the purposes of this application, a coolant is considered electrically non-conductive if its electrical conductivity is less than 10 Ω. -8 S / cm is.

[0037] A non-conductive liquid can be used as a particularly effective cooling fluid. Possible cooling fluids in this sense include silicone oil, deionized water, and the like.

[0038] The arrangement housing, in particular its tray, may have a wall section perforated by electrical conductors in order to electrically connect the one or more storage cells inside the arrangement housing to an electrical consumer or an electrical energy source outside of it.

[0039] To ensure optimal flow of cooling fluid through the housing, the fluid inlet and outlet are preferably positioned at a distance from each other. For example, the outlet can be located on the side opposite the fluid inlet with respect to the volume enclosed by the housing. Additionally or alternatively, the fluid inlet and outlet can also be positioned at a distance from each other vertically within the housing. For example, the fluid inlet can be located at the same level as one longitudinal end of the at least one storage cell, and the outlet can be located at the same level as the longitudinal end opposite that end.

[0040] The present invention is explained in more detail below with reference to the accompanying drawing. It illustrates: Fig. 1 a perspective partially cutaway view of a memory cell operating arrangement according to the invention with a memory cell arrangement also according to the invention.

[0041] In Fig. 1 is an embodiment of a storage cell operating arrangement according to the invention, generally designated by 10. This comprises a cooling fluid reservoir 12, preferably containing a liquid coolant, a piping system 14, a cooling fluid pump 16 and a storage cell arrangement 18 also according to the invention.

[0042] The storage cell arrangement 18 comprises an arrangement housing 20, which preferably has a tray 22 and a lid 24 connected to the tray, preferably detachably connected.

[0043] Tub 22 and lid 24 together enclose an arrangement volume 26 inside the arrangement housing 20, in which a plurality of memory cells 28 are accommodated. The memory cells 28 are completely surrounded by the arrangement housing 20.

[0044] Each storage cell 28, which is a storage cell for storing electrical energy, has a fluid-tight cell shell 30 for the cooling fluid used and cell contacts 32 that can be contacted outside the cell shell 30.

[0045] The cell contacts 32 can be connected by cell connectors 34 to couple the memory cells 28 for joint power output.

[0046] The tray 22 is preferably designed as an injection-molded component and preferably has contacts 36 and 38 that are molded onto or injected into the tray during the injection molding process for producing the tray 22. These contacts are made of electrically conductive material and penetrate the wall of the arrangement housing 20, so that a memory cell block formed from several memory cells 28 coupled via cell connectors 34 inside the arrangement housing 20 can be electrically connected to a section of a contact, here: contact 36, via an end cell connector 40, so that the electrical energy that can be released by or supplied to the memory cells 28 can be tapped from the outside or supplied to the memory cells 28 via the contacts 36 and 38.

[0047] The tub 22 can have spacers 44 on its inner wall regions 42, which can be designed as ribs projecting from the inner wall regions 42 into the interior of the arrangement volume 26. Preferably, the ribs 44 are formed integrally with the tub 22 or at least with the inner wall regions 42 of the tub 22 as spacers.

[0048] The spacers 44 (ribs 44) allow a gap 46 to be defined as a fluid flow space for the cooling fluid between the storage cells 28 and the tray 22, or more precisely between the cell shell 30 and the inner wall area 42.

[0049] The storage cells 28 preferably have a uniform prismatic shape. In the example shown, the cell shells 30 of the storage cells 28 are essentially cuboid.

[0050] With a Fig. On the base surface (not shown), which is opposite the end face of the end face of the memory cells 28 carrying the cell contacts 32, the memory cells 28 stand on a spacer structure of the Fig. 1. The base of the tub 22 (not shown) is also created by this spacer structure (not shown). This creates a fluid flow space in the form of a gap between the storage cell 28 and the inner wall area of ​​the base (in Fig. (1 not shown) of the tub 22. The arrow g shows the direction of the gravitational force as oriented on the fully assembled storage cell arrangement.

[0051] The longitudinal alignment of the storage cells 28, i.e. the alignment of the storage cells 28 along their largest dimension, is thus in the direction of gravity in the example shown.

[0052] For temperature control of the storage cells 28, the cooling fluid reservoir 12 is connected via the piping system 14 to a fluid supply line 48 and a fluid outlet 50. Cooling fluid can be introduced through the fluid supply line 48, through the housing 20, and in particular through the basin 22, into the assembly volume 26 inside the housing 20. The cooling fluid can be discharged from the assembly volume 26 through the fluid outlet 50. Thus, during normal operation, the storage cell assembly 18 is part of a cooling fluid circuit.

[0053] The spacer ribs 44 can not only serve to form a fluid flow chamber 46 between the storage cells 28 and the housing 20, but can also guide the flow of the cooling fluid along the fluid flow chamber 46 through the assembly volume 26 filled with storage cells 28. In particular, ribs on the inner wall regions of the housing 20 can also be used to prevent short circuits between the fluid supply line 48 and the fluid outlet 50. For this purpose, for example, a barrier rib 52 can be formed running parallel to the base of the basin 22, which can be arranged circumferentially between the connection points—preferably located at different heights—of the fluid supply line 48 and the fluid outlet 50.

[0054] Preferably the fluid supply line is arranged near the bottom of the trough 22 or at least near the longitudinal end of the storage cells 28, while the fluid discharge 50 is preferably provided in the height range of the longitudinal end of the storage cells 28 which carries the cell contacts.

[0055] Since the storage cells 28 are completely enclosed within the housing 20, the cooling fluid passed through the fluid flow chamber 46 can also cool or temperature-control the cell contacts 32, which are subject to particularly high thermal stress during operation or which are subject to particularly high thermal cycling between operating phases of different power output or input. Because the cooling fluid thus directly wets the cell contacts 32, it is essential for the present invention that an electrically non-conductive cooling fluid is used. For this purpose, silicone oil, deionized water, or other oils that have been rendered non-conductive by deionization can be used, for example.

[0056] A fluid is non-conductive within the meaning of the present invention if it has an electrical conductivity of less than 10. -8 exhibits S / cm.

[0057] The gap dimension, which is essential for the flow cross-section, can change, in particular decrease, to compensate for friction-related pressure losses along the flow path from fluid supply line 48 to fluid discharge line 50.

[0058] Since the cell contacts 32 are usually the most thermally stressed section of the storage cells 28 during operation of the storage cell arrangement 18, it can be provided that the fluid flow space at the longitudinal end supporting the cell contacts 32 has a larger flow cross-section than at the opposite longitudinal end of the storage cells 28 or along their outer surfaces.

[0059] For particularly effective cooling or temperature control of the storage cells 28, these are preferably arranged at a distance from one another, so that cooling fluid can also flow between the individual storage cells 28. The positioning of the storage cells 28 in the arrangement volume 26 can be improved by a frame structure 54, which preferably engages the longitudinal end of the storage cells 28 opposite the end bearing the cell contacts 32. The frame structure 54 can have spacer lugs projecting between adjacent storage cells 28 or between storage cells 28 and the inner wall 42 of the basin 22, which ensure a defined distance between the components bearing against the spacer lugs 56. The spacer lugs 56 are preferably in contact with the components between which they project.

[0060] The frame structure 54 is preferably connected to the arrangement housing 20, and especially preferably to the tub 22, in particular detachably connected, for example by screws 58. To connect the frame structure 54 to the tub 22 and also to connect the lid 24 to the tub 22, the tub can have an edge area 22b projecting beyond the usual tub body 22a.

[0061] The frame structure 54 can also be further secured in position by the cover 24, for example by means of fastening ribs 60 which can engage in corresponding grooves 62 on the frame structure 54.

[0062] The lid 24 can be essentially flat, and can be formed with a thin wall thickness by means of ribbing 64 without loss of stiffness.

[0063] The joint between tub 22 and lid 24 can be sealed against leakage of cooling fluid from the assembly volume 26 by a circumferential elastomer seal 66.

[0064] By using gap dimensions in the fluid flow space in the millimeter range, of about 2 to 4 mm between cell shell 30 and inner wall 42 of the tub 22 and of about 10 mm in the area between the cell contacts 32 supporting longitudinal ends and the inner wall area of ​​the lid 24 as well as of about 1.5 to 3 mm between adjacent storage cells, the amount of cooling fluid in the fluid flow space during circulation can be kept low.

[0065] With the proposed design, a significantly larger amount of thermal energy than in the prior art can be dissipated from the assembly volume 26 per unit of time, particularly when using a liquid cooling fluid. Furthermore, the storage cells 28 are well protected from external influences by the assembly housing 20, which completely encloses them.

Claims

[1] Storage cell arrangement (18) for storing electrical energy comprising at least one storage cell (28), preferably a plurality of storage cells (28), such as a battery or accumulator, with a cell shell (30) and with cell contacts (32) which can be contacted from outside the cell shell (30) in order to connect the storage cell (28) electrically to an electrical load or a voltage source, the storage cell arrangement (18) further comprising an arrangement housing (20) surrounding the storage cell (28) with a fluid inlet (48) and a fluid outlet (50) in order to introduce a cooling fluid into the arrangement housing (20) and to discharge it again, wherein at least in sections between the arrangement housing (20) and the at least one storage cell (28) a fluid flow space (46) is provided, which forms at least part of the flow path of the cooling fluid between the fluid inlet (48) and the fluid outlet (50),characterized by , that the cell shell (30) is fluid-tight and the storage cell (28) including its cell contacts (32) is completely enclosed by the arrangement housing (20) and that the fluid flow space (46) is a gap space (46) between an outer wall region of the cell shell (30) and an inner wall region (42) of the arrangement housing (20), wherein the gap height in a section closer to the fluid inlet (48) is greater than in a section closer to the fluid outlet (50) of the flow path of the cooling fluid located inside the arrangement housing (20). [2] Memory cell arrangement (18) according to claim 1, characterized by , that the cell contacts (32) of the at least one storage cell (28) project at least partially, preferably completely, into the fluid flow space (46). [3] Memory cell arrangement (18) according to claim 1 or 2, characterized by, that a spacer (44) is provided between the at least one storage cell (28) and an inner wall area (42) of the arrangement housing (20) pointing towards the storage cell (28). [4] Memory cell arrangement (18) according to claim 3, characterized by , that the spacer (44) is at least a rib (44) projecting from the arrangement housing (20) into the arrangement volume (26) enclosed therein. [5] Memory cell arrangement (18) according to one of the preceding claims, characterized by , that it comprises a frame structure (54) separately formed from the arrangement housing (20), which is arranged in the arrangement housing (20) and positions an engagement section of the at least one memory cell (28) relative to the arrangement housing (20) which engages with the frame structure (54). [6] Memory cell arrangement (18) according to claim 5, characterized by, that the at least one memory cell (28) is oriented with one longitudinal end towards an inner wall of the arrangement housing (20) and is engaged with the frame structure (54) in the area of ​​its opposite longitudinal end, wherein preferably the longitudinal end of the memory cell (28) closer to the frame structure (54) has the cell contacts (32). [7] Memory cell arrangement (18) according to one of the preceding claims, characterized by that it has a plurality of storage cells (28) each with cell contacts (32) and a cell shell (30), wherein the storage cells (28) are arranged at a distance from each other to form a fluid flow space (46) between them. [8] Memory cell arrangement (18) according to claim 7, characterized by , that projecting noses (56) are provided on the frame structure (54), which extend into the gap between adjacent storage cells (28) as spacer gauges. [9] Memory cell arrangement (18) according to any one of the preceding claims, characterized by , that the arrangement housing (20) has a tub (22) and a lid (24) closing the tub (22), wherein preferably the clear height of the tub's inner volume surrounded by the tub (22) exceeds the dimensions of the storage cells (28) arranged in the tub (22) in the vertical direction of the tub (22). [10] Memory cell arrangement (18) according to one of the preceding claims, including claims 7 and 9, characterized by , that the frame structure (54) is attached to the tub (22), in particular that it is detachably attached. [11] Memory cell arrangement (18) according to claim 10, characterized by , that the lid (24) is connected to an edge area (22b) of the tub (22) surrounding the frame structure (54), in particular that it is detachably connected. [12] Memory cell arrangement (18) according to claim 11, characterized by, that on different, preferably opposite, sides of the volume (26) enclosed by the arrangement housing (20) a section of the edge region (22b) of the arrangement housing (20) protrudes from the rest of the housing body, wherein the edge regions (22b) - with reference to an intended placement surface of the arrangement housing (20) - are arranged at different height levels such that the extension areas of the edge region sections located on different sides of the volume (26) enclosed by the arrangement housing (20) do not overlap in the height direction above the placement surface. [13] Storage cell operating arrangement (10) with a storage cell arrangement (18) according to one of the preceding claims, further comprising a cooling fluid reservoir (12) connected to the fluid supply line (48) for fluid passage and a cooling fluid delivery pump (16) which is configured to generate a pressure difference between the cooling fluid reservoir (12) and the storage cell arrangement (18) in order to generate a cooling fluid flow along the pressure gradient, wherein the cooling fluid is electrically non-conductive. [14] Memory cell operating arrangement (10) according to claim 13, characterized by that the cooling fluid is an electrically non-conductive liquid, such as silicone oil, deionized water, and the like.

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